WO2014174842A1 - 電力変換システム、コネクタ - Google Patents
電力変換システム、コネクタ Download PDFInfo
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- WO2014174842A1 WO2014174842A1 PCT/JP2014/002292 JP2014002292W WO2014174842A1 WO 2014174842 A1 WO2014174842 A1 WO 2014174842A1 JP 2014002292 W JP2014002292 W JP 2014002292W WO 2014174842 A1 WO2014174842 A1 WO 2014174842A1
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- Prior art keywords
- power
- switch
- connector
- unit
- battery
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/11—DC charging controlled by the charging station, e.g. mode 4
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
- B60L53/16—Connectors, e.g. plugs or sockets, specially adapted for charging electric vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L55/00—Arrangements for supplying energy stored within a vehicle to a power network, i.e. vehicle-to-grid [V2G] arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/19—Switching between serial connection and parallel connection of battery modules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/18—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules
- B60L58/20—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries of two or more battery modules having different nominal voltages
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2250/00—Driver interactions
- B60L2250/10—Driver interactions by alarm
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2250/00—Driver interactions
- B60L2250/16—Driver interactions by display
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2250/00—Driver interactions
- B60L2250/24—Driver interactions by lever actuation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2270/00—Problem solutions or means not otherwise provided for
- B60L2270/30—Preventing theft during charging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M2220/00—Batteries for particular applications
- H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/12—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation
- Y04S10/126—Monitoring or controlling equipment for energy generation units, e.g. distributed energy generation [DER] or load-side generation the energy generation units being or involving electric vehicles [EV] or hybrid vehicles [HEV], i.e. power aggregation of EV or HEV, vehicle to grid arrangements [V2G]
Definitions
- the present invention generally relates to a power conversion system and a connector, and more particularly to a power conversion system that enables power of a battery mounted on a device to be supplied to a power system, and a connector connected to the device.
- the charging / discharging connector is provided on the charge / discharge connector. Furthermore, a technique for supplying electric power from the storage battery to the home appliance is also described.
- the charger / discharger described in Document 1 does not have a function of detecting the presence / absence of abnormality of the electromagnetic switch provided in the charge / discharge connector, and abnormality such as welding occurs in the electromagnetic switch in the charge / discharge connector.
- appropriate measures such as notifying the user cannot be taken immediately.
- An object of the present invention is to provide a power conversion system capable of detecting an abnormality during a period in which power delivery is stopped between a connector and a battery. It is another object of the present invention to provide a connector that is prohibited from being removed from a device when an abnormality is detected.
- the power conversion system of the present invention includes a power conversion device connected to a power system, a connector capable of selecting a mounting state and a non-mounting state with respect to a connection port provided in a device on which the battery is mounted, and the battery And a processing unit configured to determine that a state in which a voltage is applied to a portion that electrically connects the connector and the connection port is abnormal during a period in which power delivery to and from is stopped. It is characterized by that.
- Another power conversion system of the present invention includes a conversion circuit that converts power from a first battery mounted on a device into power supplied to a power system, a control circuit that controls the operation of the conversion circuit, and the power
- a control power supply that receives power from at least one of a system and the conversion circuit and supplies power to the control circuit, and a mounting state and a non-mounting state can be selected for a connection port provided in the device,
- the connector of the present invention includes a body that can be selected between a mounted state and a non-mounted state with respect to a connection port provided in a battery-equipped device, and an actuator, and the body is connected to the connection port.
- An opening / closing mechanism configured to select a locked state that prohibits removal of the body from the connection port and an unlocked state that permits removal of the body from the connection port when in the mounted state;
- a first power supply unit that supplies power to the actuator from a power conversion device connected to a grid; and a second power supply unit that supplies power from at least the device to the actuator among the power conversion device and the device.
- the actuator sets the opening / closing mechanism in the locked state during a period when power is supplied, and turns the opening / closing mechanism during a period when power is not supplied. Characterized by the serial unlock state.
- Another connector of the present invention operates when a body capable of selecting a mounting state and a non-mounting state with respect to a connection port provided in a device equipped with a battery, and when a pulsed driving voltage is applied.
- a latching type actuator is provided, and when the body is attached to the connection port, a lock state that prohibits removal of the body from the connection port and removal of the body from the connection port are permitted.
- a voltage is applied to a portion that electrically connects the connector and the connection port during a period in which power transfer between the battery and the opening / closing mechanism configured to select an unlocked state is stopped
- a processing unit configured to determine that the operated state is abnormal, and the drive voltage that causes the opening / closing mechanism to transition to the unlocked state is in a period during which the processing unit determines abnormal.
- the actuator characterized in that it comprises an invalidation circuit for invalidating the driving voltage.
- FIG. 3 is a block diagram illustrating a configuration common to Embodiments 1 and 2.
- FIG. It is a side view which shows the connector and connection port which are used for Embodiment 1.
- FIG. FIG. 2 is a partial circuit diagram used in the first embodiment.
- FIG. 6 is a block diagram illustrating a third embodiment.
- FIG. 10 is a circuit diagram of a part of a connector common to the third and fourth embodiments. It is a figure explaining operation
- FIG. FIG. 10 is a block diagram illustrating a fifth embodiment.
- FIG. 10 is a block diagram illustrating a sixth embodiment.
- FIG. 10 is a block diagram illustrating a seventh embodiment.
- FIG. 10 is a block diagram illustrating an eighth embodiment.
- FIG. 10 is a partial circuit diagram illustrating a modification used in the eighth embodiment.
- FIG. 10 is a configuration diagram illustrating a ninth embodiment.
- FIG. 20 is a diagram illustrating an operation of the ninth exemplary embodiment in a flowchart.
- FIG. 10 is a partial configuration diagram illustrating a modified example of the ninth embodiment.
- the device is an electric vehicle equipped with a battery that serves as an energy source for traveling.
- the device is not limited to an electric vehicle.
- a connector described below may be used as long as the device stores a battery in a casing.
- the battery is mainly assumed to be a storage battery, but may be a fuel cell.
- capacitance in the case of a storage battery is 1 kWh or more, for example, Comprising: It is desirable that the maximum output electric power of a battery is 0.5 kW or more, for example.
- an electric vehicle is assumed to be an electric vehicle that travels by driving a motor as a prime mover using a battery as an energy source for traveling.
- the electric vehicle can be a hybrid vehicle (in parallel type, series type or split type) equipped with an internal combustion engine and an electric motor, a plug-in hybrid vehicle with a built-in power conversion device, a fuel cell vehicle equipped with a fuel cell, etc. It may be.
- the electric vehicle is a vehicle that uses a battery as an energy source for traveling, and may be any configuration that transfers power using a connector. Therefore, the electric vehicle may be an electric motorcycle.
- a power conversion device is used to charge the storage battery.
- the power conversion device converts power received from a power source such as a system power source or a distributed power source into power suitable for charging a storage battery mounted on an electric vehicle, and converts the storage battery power into power equivalent to the system power source. It has the function to convert.
- the power converter performs bidirectional power conversion between the power source and the storage battery.
- a storage battery mounted on an electric vehicle can be charged from a system power source or a distributed power source through a power converter, and can supply power to the electric circuit connected to the system power source through the power converter.
- the electric vehicle includes a connection port, and the connection port includes a connection portion that is electrically connected to the storage battery.
- the connector includes a body that is selectable between a mounting state and a non-mounting state with respect to the connection port, and a contact that is electrically connected to the power converter. Then, when the connector is attached to the connection port, the connection portion of the connection port and the contact of the power connector are electrically connected.
- the power conversion apparatus When the power conversion device is installed in a house of a user who uses an electric vehicle, the power conversion apparatus is electrically connected to the power system through a distribution board arranged in the house. In addition, when the power conversion device is installed in a place used by an unspecified number of people, the power conversion device is connected to the power system through a distribution board or directly connected to the power system. In the following embodiment, the case where the power converter device is installed in the house is assumed.
- the power conversion device has a function of converting AC power supplied from a distributed power source such as a system power source or a photovoltaic power generation device installed in a house into DC power, and charging the storage battery with the DC power.
- the power conversion device has a function of converting DC power discharged from the storage battery into AC power and supplying the AC power to an electric load used in a house through a distribution board connected to the power system.
- the function of supplying electric power to the electric load using the electric power of the storage battery is called V2H (Vehicle to Home).
- the power converter is a structure which delivers electric power between storage batteries, you may be comprised so that only one of charge and discharge of a storage battery may be performed.
- the power conversion device is installed in a detached house, but the embodiments will be described in parking lots of various facilities such as apartment houses, commercial facilities, industrial facilities, and airports. Technology can be employed.
- an electronic control unit mounted on an electric vehicle calculates a current value required for charging based on information on the status of the storage battery, such as the remaining capacity of the storage battery and the temperature of the storage battery.
- the power conversion device receives an instruction of a current value required for charging from the electric vehicle by CAN (Controller Area Network) communication, and controls a current value output in accordance with the instruction.
- CAN Controller Area Network
- a power conversion system including a power conversion device and a connector will be described.
- the connector described below may be combined with a power conversion device other than the configuration described in the embodiment.
- the power conversion system described below includes a power conversion device 10 and a connector 30 as shown in FIG.
- the power conversion device 10 includes a conversion circuit 11 that performs bidirectional power conversion between alternating current and direct current.
- the casing of the power conversion device 10 is selected from a wall-mounted type that is attached to the wall of a house, a stationary type that is installed on the ground, and the like.
- the conversion circuit 11 is electrically connected to the distribution board 60 installed in the house, and is connected to the connector 30 using the cable 20.
- the distribution board 60 branches the main circuit connected to the system power supply 61 into a plurality of branch circuits.
- An electrical load 62 is electrically connected to the branch circuit.
- the conversion circuit 11 has a function of converting alternating current supplied from the distribution board 60 into direct current power having a voltage value suitable for the storage battery 41 mounted on the electric vehicle 40, and direct current output from the storage battery 41 of the electric vehicle 40.
- AC power converted from DC power output from the storage battery 41 is supplied to the distribution board 60. This AC power is normally supplied to an electric load 62 in the house.
- the terminal voltage of the storage battery 41 is selected, for example, from a voltage value range of 50 to 600V. Further, since the AC power delivered between the conversion circuit 11 and the distribution board 60 is equivalent to the system power supply 61, for example, the effective value of the voltage is 100 V or 200 V, and the frequency is 50 Hz or 60 Hz. Become.
- the electric vehicle 40 includes a connection port 42, and the connection port 42 includes contacts 421 and 422 that are electrically connected to the storage battery 41.
- the connection port 42 includes a receiving hole 425 (see FIG. 2) into which a part of the connector 30 can be inserted. That is, the connection port 42 constitutes an inlet.
- a step portion 426 is formed on the inner side surface of the receiving hole 425. In the direction in which the connector 30 is inserted into the receiving hole 425, the stepped portion 426 is formed in a shape in which the inner surface on the back side is recessed from the inner surface on the opening side.
- the connector 30 includes a body 301 capable of selecting a mounting state and a non-mounting state with respect to the connection port. That is, a part of the body 301 has a shape that fits into the receiving hole 425 of the connection port 42 and is formed to be insertable into the receiving hole 425.
- the body 301 of the connector 30 includes a cylindrical tube portion 302 and a grip 303 extending rearward from the tube portion 302, and the cable 20 is drawn from the rear end of the grip 303.
- the cylindrical body 302 has a circular opening formed on the front surface.
- a plurality of holes are formed in the front surface of the insertion portion 304, and pin-shaped contacts that can be electrically connected to the contacts provided in the connection port 42 are disposed in each hole. ing.
- FIG. 1 shows two contacts 421 and 422 at the connection port 42 and two contacts 361 and 362 at the connector 30, but there are other connections at the connection port 42 and the insertion portion 304.
- a contact not shown is also provided. Other contacts will become apparent from the following description.
- an exposure hole (not shown) for exposing the latch lever 322 is formed on the outer peripheral surface of the insertion portion 304.
- the latch lever 322 is pulled into the insertion portion 304 when the body 301 is not attached to the connection port 42.
- the insertion portion 304 moves relative to the cylindrical portion 302 and the opening / closing mechanism 32 operates, so that the latch lever 322 is inserted from the exposure hole into the insertion portion 304. Move so that it protrudes outward.
- the latch lever 322 overlaps the step portion 426 provided in the connection port 42, thereby preventing the insertion portion 304 from being removed from the connection port 42. .
- a release button 323 is provided at the rear end of the cylindrical body 302.
- the opening / closing mechanism 32 operates to pull the latch lever 322 into the insertion portion 304.
- the body 301 is unlocked from the connection port 42. That is, the release button 323 is an operation unit for pulling the latch lever 322 into the insertion unit 304, and the latch lever 322 is maintained in a state where it overlaps the stepped portion 426 until the release button 323 is operated. Therefore, when the body 301 is attached to the connection port 42, the connector 30 cannot be removed from the connection port 42 until the release button 323 is pressed.
- the latch lever 322 and the release button 323 are interlocked via the opening / closing mechanism 32 (see FIG. 1) provided in the connector 30 as described above.
- the opening / closing mechanism 32 includes an actuator 321 that selects a state in which the movement of the release button 323 is permitted and a state in which the movement of the release button 323 is prohibited.
- the actuator 321 is preferably a linear solenoid using an electromagnet.
- the electromagnet constituting the actuator 321 includes a non-polar type that does not include a permanent magnet and moves the plunger back and forth during energization and non-energization, and a permanent magnet that provides a short-time pulsed drive voltage. Any configuration of the polar type that advances and retreats is used.
- the actuator 321 is assumed to be a non-polar electromagnet that prohibits the movement of the release button 323 when energized.
- the opening / closing mechanism 32 is in a locked state in which the release button 323 is prohibited and the body 301 is removed from the connection port 42.
- the opening / closing mechanism 32 is in an unlocked state in which the release button 323 can be moved and the body 301 can be removed from the connection port 42.
- the user When connecting the connector 30 to the connection port 42 of the electric vehicle 40, the user holds the connector 30 so as to grip the grip 303, and inserts the insertion portion 304 along the axial direction of the insertion portion 304 into the receiving hole 425 of the connection port 42. Insert into.
- the latch lever 322 When the body 301 is pressed against the connection port 42, the latch lever 322 is inserted to the back of the step portion 426 formed on the inner surface of the receiving hole 425, and the insertion portion 304 faces the cylindrical body portion 302. Move relatively.
- the opening / closing mechanism 32 projects the latch lever 322 from the side surface of the insertion part 304. Accordingly, the latch lever 322 overlaps the step portion 426, and the connector 30 is held so as not to drop out of the connection port. That is, the body 301 of the connector 30 is maintained in the mounted state with respect to the connection port 42.
- the user when removing the connector 30 from the electric vehicle 40, the user holds the connector 30 so as to grip the grip 303 and presses the release button 323.
- the opening / closing mechanism 32 pulls the latch lever 323 from the side surface of the insertion portion 304 until the latch lever 322 does not overlap the stepped portion 426.
- the connector 30 is pulled away from the connection port 42 while the release button 323 is pushed and the latch lever 322 is kept pulled, the insertion portion 304 of the connector 30 comes out of the connection port 42. That is, the body 301 of the connector 30 is not attached to the connection port 42.
- the two contacts 361 and 362 held in the insertion portion 304 of the connector 30 are electrically connected to the conversion circuit 11 of the power conversion device 10 via the cable 20.
- the contacts 361 and 362 of the connector 30 come into contact with the contacts 421 and 422 of the connection port 42. Therefore, when the connector 30 is attached to the connection port 42 of the electric vehicle 40, the conversion circuit 11 and the storage battery 41 are provided in the electric paths 511 and 512 provided in the cable 20 and the connector 30 and the electric vehicle 40.
- the electric circuits 511 and 512 are first electric circuits
- the electric circuits 521 and 522 are second electric circuits.
- the power conversion device 10 includes a communication unit 12 and a notification unit 13 in addition to the conversion circuit 11.
- the communication unit 12 is connected to the connector 30 via the cable 20.
- the communication unit 12 can communicate with the electronic control unit 45 mounted on the electric vehicle 40 through the connector 30.
- bidirectional communication by CAN communication for example, is performed. Therefore, the communication unit 12 can receive information such as the terminal voltage of the storage battery 41, the remaining capacity of the storage battery 41, and the temperature of the storage battery 41, and can give an instruction to the electronic control unit 45 as necessary.
- the cable 20 that electrically connects the power conversion device 10 and the connector 30 includes a pair of power supply lines 21 and 22 that are part of the electrical path between the conversion circuit 11 and the storage battery 41. That is, if the connector 30 is attached to the connection port 42, the power lines 21 and 22 are used as part of an electric circuit for transferring power between the conversion circuit 11 and the storage battery 41.
- the power supply line 21 is defined on the high potential side (positive electrode)
- the power supply line 22 is defined on the low potential side (negative electrode).
- the cable 20 includes a signal line 23 connected to the communication unit 12 in addition to the power lines 21 and 22.
- the signal line 23 includes, for example, two communication lines used for CAN communication and five control lines. The communication line and the control line will be described later. If the connector 30 is attached to the connection port 42, the signal line 23 is connected to the electronic control unit 45 of the electric vehicle 40 via the connector 30, and the communication unit 12 of the power conversion device 1 is electrically connected via the signal line 23. Communication with the vehicle 40 becomes possible. In FIG. 1, communication lines and control lines are not shown.
- the electric vehicle 40 includes a storage battery 41 as a travel energy source and a switch 43 as a second switch using an electromagnetic contactor.
- the electromagnetic contactor is configured such that the contact is opened and closed by an electromagnet.
- the switch 43 that is the second switch is inserted into the electric circuits 521 and 522 that are the second electric circuit between the storage battery 41 and the connection port 42.
- the switch 43 includes a contact 431 inserted in the high-potential side (positive electrode) circuit 521 and a contact 432 inserted in the low-potential side (negative electrode) circuit 522. That is, the switch 43 includes a so-called double cut contact.
- the open / close state of the switch 43 is selected by the electronic control unit 45 of the electric vehicle 40.
- the electronic control unit 45 When the electronic control unit 45 starts charging or discharging the storage battery 41, the electronic control unit 45 receives a notification from the power conversion device 10 and shifts the switch 43 to the closed state. Further, the electronic control unit 45 shifts the switch 43 to the open state when the charging or discharging of the storage battery 41 is completed. That is, the contacts 421 and 422 provided at the connection port 42 are electrically connected to the storage battery 41 through the contacts 431 and 432 and charge or discharge the storage battery 41 during a period in which the storage battery 41 is charged or discharged. In the absence period, it is electrically disconnected from the storage battery 41.
- the connector 30 of the present embodiment includes the body 301 that can be attached to the connection port 42 of the electric vehicle 40 as described above.
- the connector 30 includes a switch 31, an opening / closing mechanism 32, and a processing unit 33 inside the body 301.
- the switch 31 is inserted into the electric paths 511 and 512 between the power lines 21 and 22 and the contacts 361 and 362 in the cable 20.
- the switch 31 includes a contact 311 inserted into the electric circuit 511 between the power line 21 and the contact 361 and a contact 312 inserted into the electric circuit 512 between the power line 22 and the contact 362.
- the switch 31 includes a so-called double cut contact.
- the two contacts 311, 312 function as main contacts that select conduction and disconnection of the electric paths 511, 512, and are opened and closed when an external force acts on an operator (not shown) provided in the switch 31.
- the switch 31 incorporates a trip device configured to open the contacts 311 and 312 in a short time when an abnormal current passes through the electric paths 511 and 512. Also works.
- the trip device operates when an overcurrent has passed through the contacts 311 and 312 reaches a predetermined time, or when a short-circuit current flows in the circuit including the contacts 311 and 312 when an abnormal current has passed.
- the contacts 311 and 312 are configured to open rapidly in a short time.
- the processing unit 33 includes a first detection unit 331 that detects whether the switch 31 is in an open state or a closed state, and whether or not the open / close mechanism 32 has applied an external force that shifts the switch 31 to the open state. And a second detection unit 332 for detecting.
- the processing unit 33 includes a determination unit 330 that determines whether there is an abnormality using the results detected by the first detection unit 331 and the second detection unit 332.
- the processing unit 33 is preferably provided in the connector 30, but may be provided separately from the connector 30.
- the determination unit 330 may be provided in the connector 30, and the first detection unit 331 and the second detection unit 332 may be provided separately from the connector 30.
- the determination unit 330 may output a binary determination signal as a determination result.
- the connector 30 preferably further includes a notification unit 34 in order to transmit the determination signal output from the processing unit 33 to the power conversion device 10. The configuration and operation of the processing unit 33 and the notification unit 34 will be described later.
- the switch 31 opens and closes the contacts 311 and 312. It is desirable to provide an auxiliary contact 313 that interlocks.
- the auxiliary contact 313 includes a common contact, a first contact, and a second contact, and the common contact is configured to selectively conduct with one of the first contact and the second contact.
- the common contact When the two contacts 311 and 312 of the switch 31 are both open, the common contact is electrically connected to the first contact. When the contacts 311 and 312 of the switch 31 are both closed, the common contact is the second contact. Conduction with contact. That is, the auxiliary contact 313 is connected to the contacts 311 and 312 which are main contacts, and the common contact is electrically connected to one of the first contact and the second contact in conjunction with the movement of the contacts 311 and 312. Therefore, for example, even if an external force that causes the operating element to shift to the open state is applied, if one of the two contacts 311 and 312 is welded, the auxiliary contact 313 is electrically connected to the second contact. It is kept in the state.
- the auxiliary contact 313 is connected to the first detection unit 331, and the first detection unit 331 monitors whether the common contact of the auxiliary contact 313 is in conduction with the first contact or the second contact. Thus, the open / closed state of the contacts 311 and 312 which are main contacts is detected.
- the switch 31 includes an actuator 314 that opens and closes the contacts 311 and 312 separately from the operation element.
- the actuator 314 includes a non-polar electromagnet, and transmits a force to the contacts 311 and 312 so that the contacts 311 and 312 are closed when energized and the contacts 311 and 312 are opened when de-energized.
- the actuator 314 is provided to open the contacts 311 and 312 when the temperature of the insertion portion 304 exceeds a predetermined allowable temperature.
- the connector 30 includes a temperature sensor 37 that monitors the temperature of the insertion unit 304 and a drive unit 38 that operates the actuator 314 based on the output of the temperature sensor 37.
- a temperature sensor 37 for example, a thermistor is used.
- the drive unit 38 stops energizing the actuator 314 and shifts the switch 31 to the open state.
- the switch 31 is opened by the switching mechanism 32 when the connector 30 is not attached to the connection port 42.
- the switch 31 is operated by the release button 323, an abnormal current passes through the electric paths 511 and 512, or the insertion portion 304 has an allowable temperature. If it exceeds, it will be open.
- the connector 30 uses the control power (for example, DC 12V) supplied from the control power supply 14 (see FIG. 3) provided in the power conversion device 10 through the signal line 23, and thereby the processing unit 33 and the notification unit. And a control power supply 39 for supplying power to 34 and the like.
- DC 12V control power supplied from the control power supply 14 (see FIG. 3) provided in the power conversion device 10 through the signal line 23, and thereby the processing unit 33 and the notification unit.
- a control power supply 39 for supplying power to 34 and the like.
- control lines 231 to 235 mean not only electrical paths in the cable 20 but also electrical paths connected to the control lines 231 to 235 of the cable 20 in the power conversion device 10 and the connector 30.
- the illustrated example shows a case where the connector 30 is attached to the connection port 42.
- the electric lines 511 and 512 and the communication lines for CAN communication are omitted.
- the power conversion device 10 and the connector 30 are not distinguished from each other, but the configuration excluding the second detection unit 332 and the insertion unit 304 is preferably provided in the power conversion device 10.
- the contact r11 of the electromagnetic relay Ry11 is connected to the control line 231 between the positive electrode of the control power supply 14 and the insertion portion 304. Further, the contact r12 of the electromagnetic relay Ry12 is connected to the control line 232 between the ground (negative electrode) of the control power supply 14 and the insertion portion 304. Further, a resistor R13 is connected to the control line 233 between the ground of the control power supply 14 and the contact of the connector 30, and the control line 234 is connected between the positive electrode of the control power supply 14 and the contact of the connector 30. A series circuit of the primary side of the photocoupler 15 and the resistor R14 is connected. In the illustrated example, the second detection unit 332 is provided to monitor the potential between the resistor R13 and the contact on the control line 233.
- the electric vehicle 40 includes an in-vehicle battery 46 that is a power source for operating devices mounted on the electric vehicle 40, in addition to the storage battery 41 that is an energy source for traveling. That is, the electric vehicle 40 includes a storage battery 41 that is a first battery and an in-vehicle battery 46 that is a second battery. As the terminal voltage of the in-vehicle battery 46, for example, DC 12V is selected.
- the control power supply 14 and the in-vehicle battery 46 are connected to each other through the control line 235 so that the ground potential is the same.
- the in-vehicle battery 46 is mounted to operate equipment used in the vehicle such as an air conditioner, a wiper, a headlight, a direction indicator, an interior light, and a car navigation. That is, the in-vehicle battery 46 is a lead storage battery as a representative example.
- the electric vehicle 40 includes three photocouplers 451, 452, and 453.
- the primary side of the photocoupler 451 is connected to the control line 231 via the resistor R41, and the primary side of the photocoupler 452 is connected to the control line 232 via the resistor R42.
- the primary side of the photocoupler 453 is connected to the control line 233 via the resistor R43.
- the electric vehicle 40 includes a transistor 47, and a control line 234 is connected to the transistor 47 via a resistor R44.
- the switch 43 has coils 433 and 434 that constitute an electromagnet connected in parallel, and a switch element 44 connected in series to the parallel circuit of the coils 433 and 434.
- One coil 433, 434 may be shared.
- the switch element 44 is selected from an electromagnetic relay, a photocoupler, and the like.
- the series circuit of the coils 433 and 434 and the switch element 44 is connected between the control lines 231 and 232 when the connector 30 is attached to the connection port 42.
- the switch element 44 is on, the coils 433 and 434 are energized and the contacts 431 and 432 of the switch 43 are energized. Closes.
- the primary side of the photocoupler 451 is connected between the control line 231 and the ground, and the primary side of the photocoupler 452 is connected between the control line 231 and the control line 232. Therefore, when the contact r11 of the electromagnetic relay Ry11 is closed, the secondary side of the photocoupler 451 is turned on. When the contact r12 of the electromagnetic relay Ry12 is opened at this time, the secondary side of the photocoupler 452 is kept off. . On the other hand, when both the contact r11 of the electromagnetic relay Ry11 and the contact r12 of the electromagnetic relay Ry12 are closed, not only the photocoupler 451 but also the secondary side of the photocoupler 452 is turned on.
- the primary side of the photocoupler 453 is connected between the control line 233 and the positive electrode of the in-vehicle battery 46. Therefore, when the connector 30 is attached to the connection port 42, the second detection unit 332 detects a voltage obtained by dividing the terminal voltage of the in-vehicle battery 46 by the resistor R13 and the resistor R44.
- the transistor 47 since the transistor 47 is connected to the primary side of the photocoupler 15 via the control line 234, the on / off state of the transistor 47 is transmitted to the secondary side of the photocoupler 15. Therefore, information can be transmitted from the electric vehicle 40 to the power converter 10.
- the operation of charging the storage battery 41 will be briefly described.
- the connector 30 is attached to the connection port 42 of the electric vehicle 40, a current flows through the control line 233, so that the photocoupler 453 is turned on. Therefore, the electronic control unit 45 of the electric vehicle 40 recognizes that the connector 30 is connected to the connection port 42. Further, the second detection unit 332 recognizes that the connector 30 is attached to the connection port 42 by detecting a voltage obtained by dividing the terminal voltage of the in-vehicle battery 46 by the resistor R13 and the resistor R44. .
- the power conversion device 10 starts processing for charging and turns on the contact r11 of the electromagnetic relay Ry11.
- the power conversion device 10 includes an operation unit (not shown), and an operation for starting charging is performed on the operation unit.
- the contact r11 of the electromagnetic relay Ry11 When the contact r11 of the electromagnetic relay Ry11 is turned on, a current flows through the control line 231 so that the photocoupler 451 is turned on.
- the electronic control unit 45 of the electric vehicle 40 recognizes that the power conversion device 10 has been operated, and starts CAN communication with the power conversion device 10. Therefore, the power conversion device 10 receives information about the status of the storage battery 41 such as the remaining capacity of the storage battery 41 and the temperature of the storage battery 41 from the electronic control unit 45.
- the electronic control unit 45 of the electric vehicle 40 turns on the transistor 47 in order to allow the power to be transferred between the power conversion device 10 and the storage battery 41.
- the photocoupler 15 connected to the transistor 47 through the control line 234 is turned on.
- the power conversion device 10 recognizes that the power transfer with the storage battery 41 is permitted, supplies power to the actuator 321 provided in the opening / closing mechanism 32 of the connector 30, and releases the release button.
- the movement of H.323 is prohibited. That is, the opening / closing mechanism 32 is locked.
- the power conversion device 10 turns on the contact r12 of the electromagnetic relay Ry12.
- the photocoupler 452 When the contact r12 of the electromagnetic relay Ry12 is turned on, the photocoupler 452 is turned on through the contact r11 of the electromagnetic relay Ry11 and the contact r12 of the electromagnetic relay Ry12. When the photocoupler 452 is used, the electronic control unit 45 of the electric vehicle 40 recognizes that power can be exchanged with the power conversion device 10.
- the electronic control unit 45 of the electric vehicle 40 recognizes that power can be transferred between the power conversion device 10 and the storage battery 41, the electronic control unit 45 turns on the switch element 44 and sets the contacts 431 and 432 of the switch 43. close.
- the electronic control unit 45 performs CAN communication with the power conversion device 10 and instructs the power conversion device 10 about a current value required for charging the storage battery 41.
- the power conversion device 10 starts supplying power to the electric paths 511 and 512 in order to charge the storage battery 41.
- the condition for terminating the charging of the storage battery 41 is not one type, but here, a case where the charging is terminated on the condition of the remaining capacity of the storage battery 41 in the electric vehicle 40 will be described as an example.
- the electronic control unit 45 of the electric vehicle 40 turns off the transistor 47 when the remaining capacity of the storage battery 41 reaches a predetermined value. Since the photocoupler 15 is turned off when the transistor 47 is turned off, the power conversion apparatus 10 recognizes that the end of charging has been instructed, and stops supplying power to the electric paths 511 and 512.
- the electronic control unit 45 of the electric vehicle 40 confirms that the current for charging the storage battery 41 has dropped to a predetermined value or less
- the electronic control unit 45 turns off the switch element 44 and opens the contacts 431 and 432 of the switch 43.
- the power conversion device 10 and the electronic control unit 45 perform confirmation processing including insulation diagnosis.
- the power conversion device 10 stops the power to the actuator 321 provided in the opening / closing mechanism 32 of the connector 30 so that the connector 30 can be detached from the connection port 42, and the charging process ends. That is, the opening / closing mechanism 32 is unlocked.
- the photocoupler 453 is turned on, and the electronic control unit 45 recognizes that the connector 30 is connected to the connection port 42. Further, the second detection unit 332 detects the voltage of the control line 233, thereby recognizing that the connector 30 is attached to the connection port 42.
- the power conversion device 10 starts a process for discharging.
- the power conversion device 10 turns on the contact r11 of the electromagnetic relay Ry11 and causes the electronic control unit 45 of the electric vehicle 40 to recognize that the power conversion device 10 has been operated.
- the electronic control unit 45 starts CAN communication with the power conversion device 10, and sends information related to the status of the storage battery 41, such as the remaining capacity of the storage battery 41 and the temperature of the storage battery 41, from the electronic control unit 45 to the power conversion device 10. hand over.
- the electronic control unit 45 turns on the transistor 47 and notifies the power converter 10 of permission to discharge.
- the power conversion device 10 prohibits the movement of the release button 323 by supplying power to the actuator 321 provided in the opening / closing mechanism 32 of the connector 30. That is, the movement of the latch lever 322 is prohibited and the locked state is maintained. Thereafter, the power conversion device 10 turns on the contact r12 of the electromagnetic relay Ry12, and causes the electronic control unit 45 of the electric vehicle 40 to recognize that it is possible to exchange power with the storage battery 41.
- the electronic control unit 45 of the electric vehicle 40 recognizes that power can be transferred between the power conversion device 10 and the storage battery 41, the electronic control unit 45 turns on the switch element 44 and sets the contacts 431 and 432 of the switch 43. close.
- the electronic control unit 45 performs CAN communication with the power conversion device 10 to start the operation of the power conversion device 10 and convert the DC power of the storage battery 41 to AC power.
- the condition for terminating the discharge from the storage battery 41 is not one type, but here, the case where the discharge is terminated using the remaining capacity of the storage battery 41 in the electric vehicle 40 as an example will be described.
- the electronic control unit 45 of the electric vehicle 40 turns off the transistor 47 and causes the power conversion device 10 to recognize the end of the discharge.
- the switch element 44 is turned off, and the switch 43 The contacts 431 and 432 are opened. Thereafter, the power conversion device 10 and the electronic control unit 45 perform confirmation processing.
- the confirmation is completed, power to the actuator 321 provided in the opening / closing mechanism 32 of the connector 30 is stopped, and the connector 30 is connected to the connection port. It is possible to detach from 42, and the discharge process is terminated.
- the connector 30 of the present embodiment includes the processing unit 33 as a configuration for detecting an abnormality of the switch 31, and the processing unit 33 includes the determination unit 330, the first detection unit 331, and the second detection unit. A detection unit 332. Further, the result of determination by the determination unit 330 is configured to be notified to the power conversion device 10 through the notification unit 34.
- the first detection unit 331 determines whether the common contact of the auxiliary contact 313 that opens and closes in conjunction with the contacts 311 and 312 of the switch 31 is connected to the first contact or the second contact. Thus, it is detected whether the switch 31 is open or closed.
- the first detection unit 331 is configured to output an L level detection signal when the switch 31 is in an open state and the common contact of the auxiliary contact 313 is electrically connected to the first contact.
- the first detection unit 331 outputs an H level detection signal.
- the L level and the H level are values for convenience indicating that the detection signal is binary.
- the L level corresponds to a voltage value of 0V
- the H level corresponds to a voltage value of 12V.
- the switch 31 if the voltage value output from the first detection unit 331 is 0V, the switch 31 is determined to be in the open state, and if the voltage value output from the first detection unit 331 is 12V, the switch 31 is opened / closed. It is determined that the container 31 is in the closed state.
- the second detection unit 332 monitors the voltage value of the control line 233 as described above. By monitoring the voltage value of the control line 233, it is possible to identify whether the body 301 of the connector 30 is attached to the connection port 42 or not. That is, if the body 301 of the connector 30 is attached to the connection port 42, current flows through the control line 233 through the series circuit of the resistor R13 and the resistor R44. It is recognized that the connection port 42 is attached.
- the voltage value of the control line 233 detected by the second detection unit 332 is 0V.
- the voltage value of the control line 233 detected by the second detection unit 332 is greater than 0V.
- the voltage value of the control line 233 when the body 301 of the connector 30 is attached to the connection port 42 depends on the combination of the resistance values of the resistor R13 and the resistor R44, but is set to 2V, for example.
- the second detection unit 332 monitors the voltage value of the control line 233, and compares the monitored voltage value with a predetermined threshold value, whereby the body 301 of the connector 30 is attached to the connection port 42. Or non-wearing state. As described above, if the voltage value of the control line 233 is 2V in the mounted state, the threshold value may be set to 1V, for example. For example, the second detection unit 332 outputs an H-level detection signal when the body 301 is in the mounted state and the monitored voltage value is larger than the threshold value, and the monitored voltage value when the body 301 is in the non-mounted state. If it is below the threshold, an L level detection signal is output.
- the determination unit 330 determines whether or not an abnormality has occurred in the switch 31 by combining the detection signal output from the first detection unit 331 and the detection signal output from the second detection unit 332. .
- the determination unit 330 determines that the detection signal of the first detection unit 331 is H level and the detection signal of the second detection unit 332 is L level as abnormal. Is configured to do.
- the switch 31 provided in the connector 30 is always opened when the body 301 of the connector 30 is not attached to the connection port 42 if the contacts 311 and 312 which are main contacts are normal. Therefore, if the body 301 is not attached to the connection port 42 and the contacts 311 and 312 which are main contacts are closed, the determination unit 330 has an abnormality such as welding at the contacts 311 and 312. Judge that In other words, the determination unit 330 determines that the switch 31 is abnormal when the detection signal of the first detection unit 331 is H level and the detection signal of the second detection unit 332 is L level. For other combinations of detection signals, the determination unit 330 determines that the switch 31 is normal.
- the second detection unit 332 identifies whether the body 301 of the connector 30 is attached or not attached to the connection port 42 by monitoring the voltage value of the control line 233. That is, it is determined as abnormal that the switch 31 is closed and the body 301 is not attached to the connection port 42.
- the connector 30 may be configured to include, for example, a switch (not shown) in order to detect the operation of the release button 323 and to give the second detection unit 332 an on / off state of this switch.
- the determination unit 330 is triggered by the fact that the first detection unit 331 detects the closed state of the switch 31, that is, when the detection signal of the first detection unit 331 becomes H level. It is configured to start the determination of whether there is an abnormality.
- the determination unit 330 is triggered by the fact that the first detection unit 331 detects the open state of the switch 31, that is, when the detection signal of the first detection unit 331 becomes L level. End the determination of whether there is an abnormality.
- the notification unit 34 Since the result of determination by the processing unit 33 is two states, normal or abnormal, the notification unit 34 performs power conversion on a binary signal of a first value indicating presence of abnormality and a second value indicating absence of abnormality. Transmit to device 10.
- the notification unit 34 is connected to the signal line 23 of the cable 20, and transmits a binary signal to the power conversion device 10 through the signal line 23.
- the power conversion device 10 receives the binary signal transmitted from the notification unit 34 as the determination result of the processing unit 33 by the communication unit 12.
- the power conversion device 10 causes the notification unit 13 to perform notification indicating the abnormality.
- the notification unit 13 includes a display for displaying a message.
- the notification unit 13 displays a message indicating that the switch 31 has an abnormality.
- the connector 30 may include an indicator lamp (not shown) that displays the result of determination by the determination unit 330.
- the power conversion system of this embodiment includes the processing unit 33 in addition to the power conversion device 10 and the connector 30.
- the power converter 10 is connected to the power system (distribution panel 60).
- the connector 30 can select a mounting state or a non-mounting state with respect to a connection port 42 provided in a device (electric vehicle 40) on which a battery (storage battery 41) is mounted.
- the processing unit 33 determines that the state in which the voltage is applied to the part that electrically connects the connector 30 and the connection port 42 during the period in which the power transfer with the battery (storage battery 41) is stopped is abnormal. It is configured as follows.
- the processing unit 33 can detect an abnormality.
- the period during which power delivery to the battery (storage battery 41) is stopped corresponds to a period other than during charging or discharging, and the portion where the connector 30 and the connection port 42 are electrically connected is in contact with the battery (storage battery 41). This corresponds to the children 361 and 362 or the contacts 421 and 422. Therefore, the processing unit 33 abnormalizes the state in which the voltage of the power conversion device 10 or the battery (storage battery 41) is applied to the contacts 361, 362 or the contacts 421, 422 during a period other than charging or discharging. It will be judged. In other words, the processing unit 33 determines that the voltage is applied to the contacts 361 and 362 or the contacts 421 and 422 even though the battery is not being charged or discharged, and enables quick response. Become.
- the power conversion system includes the switch 31 and the switching mechanism 32 in the connector 30.
- the switch 31 is inserted into the electric circuits 511 and 512 between the power conversion device 10 and the battery (storage battery 41) in the connector 30, and the closed state in which the electric circuits 511 and 512 are conducted and the electric circuits 511 and 512 are interrupted.
- the open state is selected.
- the opening / closing mechanism 32 is configured to allow the switch 31 to be closed when the connector 30 is in the mounted state, and to open the switch when the connector 30 is not mounted. .
- the processing unit 33 includes a first detection unit 331, a second detection unit 332, and a determination unit 330.
- the first detection unit 331 detects the open state and the closed state of the switch 31.
- the second detection unit 332 detects the mounting state and the non-mounting state of the connector 30.
- the determination unit 330 determines that there is an abnormality when the first detection unit 331 detects the closed state and the second detection unit 332 detects the non-wearing state. Therefore, for example, even if the switch 31 is opened due to an abnormal current passing through the electric paths 511 and 512 in a state where the connector 30 is attached, the processing unit 33 erroneously determines that the switch 31 is abnormal. There is no judgment, and the presence or absence of abnormality can be judged accurately.
- the first detection unit 331 and the second detection unit 332 are provided in the connector 30.
- the power conversion system can detect both the open / closed state of the switch 31 provided in the connector 30 and the mounted state of the connector 30 in the connection port 42 at the connector 30. That is, the design change of the power converter 10 can be minimized.
- the processing unit 33 is provided in the connector 30, and the connector 30 includes a notification unit 34 that notifies the power conversion device 10 of a binary signal representing the determination result of the processing unit 33. That is, the power conversion system determines whether or not the switch 31 is abnormal at the connector 30, and the notification unit 34 transmits a binary signal representing the determination result from the connector 30 to the power conversion device 10. Therefore, the power conversion system increases the amount of data transmitted to the power conversion device 10 as compared to the case where the detection results of the first detection unit 331 and the second detection unit 332 are transmitted from the connector 30 to the power conversion device 10. Can be suppressed, and is less susceptible to noise.
- the switch 31 includes main contacts (contacts 311 and 312) that open and close the electric paths 511 and 512 and auxiliary contacts 313 that open and close in conjunction with the main contacts (contacts 311 and 312). .
- the first detection unit 331 detects whether the switch 31 is open or closed by monitoring the contact state of the auxiliary contact 313. Therefore, the first detection unit 331 can detect the open / close state of the switch 31 with a simple process of simply monitoring the contact output of the auxiliary contact 313.
- the connector 30 includes the processing unit 33 for detecting the abnormality of the switch 31, but the connector 30 includes the first detection unit 331 and the second detection unit 332,
- a configuration in which the power conversion device 10 includes the determination unit 330 may be employed.
- the notification unit 34 transmits the results detected by the first detection unit 331 and the second detection unit 332 to the power conversion device 10, and the determination unit 330 opens and closes using the information received from the notification unit 34. The abnormality of the vessel 31 will be judged.
- the connector 30 may include a first detection unit 331 and a notification unit 34
- the power conversion device 10 may include a determination unit 330 and a second detection unit 332.
- the notification unit 34 transmits the result detected by the first detection unit 331 to the power conversion device 10.
- the determination unit 330 detects an abnormality in the contacts 331 and 332 of the switch 31. Judgment is made.
- the processing unit 33 that monitors the abnormality of the switch 31 provided in the connector 30 may be provided in the power conversion device 10.
- the notification unit 34 and the communication unit 12 can be omitted.
- the connector 30 may include an indicator lamp that displays that the processing unit 33 has detected an abnormality in the switch 31.
- the configuration for notifying the power conversion device 10 of the determination result of the determination unit 330 may be omitted. That is, the notification unit 34 can be omitted.
- the actuator 321 of the opening / closing mechanism 32 prohibits the operation of the release button 323 in the locked state and permits the operation of the release button 323 in the unlocked state, but prohibits and permits the movement of the latch lever 322. Can be configured to do.
- the first detection unit 331 detects the open state and the closed state of the switch 31, and the auxiliary contact 313 provided on the switch 31 separately from the contacts 311 and 312 that are main contacts. Is used.
- the first detection unit 331 detects the open state and the closed state of the switch 31 without using the auxiliary contact 313.
- the same configurations as those of the first embodiment are denoted by common reference numerals, and the description thereof is omitted.
- the first detection unit 331 monitors the voltage value between the measurement points P1 and P2 defined in the electric paths 511 and 512 of the connector 30, and compares the voltage value with a predetermined threshold value. Thus, the open state and the closed state of the switch 31 are identified. As shown in FIG. 1, the measurement points P ⁇ b> 1 and P ⁇ b> 2 are determined between the switch 31 and the contacts 361 and 362 in the electric paths 511 and 512.
- the first detection unit 331 detects whether the switch 31 is open or closed at the timing when the body 301 of the connector 30 shifts from the mounted state to the non-mounted state with respect to the connection port 42. It is configured. Specifically, the first detection unit 331 causes the power conversion device 10 to flow a minute current through the electric paths 511 and 512 when the output of the second detection unit 332 changes from the H level to the L level. And using this minute current, it is detected whether the switch 31 is closed or open.
- the first detection unit 331 does not detect the open / close state of the switch 31 immediately after the output of the second detection unit 332 becomes L level, but the output of the second detection unit 332 becomes L level. When a predetermined time elapses, it is detected whether the switch 31 is closed or open. Moreover, it is desirable for the power conversion device 10 to continuously flow a minute current for a predetermined time before and after the time when the first detection unit 331 detects whether the switch 31 is in the closed state or the open state. This is to reduce the influence of fluctuations in the minute current. It is desirable that the time until the first detection unit 331 detects whether the switch 31 is in the closed state or the open state after the output of the second detection unit 332 becomes the L level is about several seconds.
- the first detection unit 331 when the output of the second detection unit 332 is at the L level, the first detection unit 331 includes the switch 31 in a state where a minute current is flowing from the power conversion device 10 to the electric paths 511 and 512. And the voltage value between the measurement points P ⁇ b> 1 and P ⁇ b> 2 set between the insertion unit 304. The first detection unit 331 compares the voltage value between the electric paths 511 and 512 with a threshold value.
- the detector 331 sets the output to the H level.
- the output of the first detection unit 331 is L level, and if the switch 31 is in the closed state, the output of the first detection unit 331 is H level.
- the first detection unit 331 measures the voltage value between the measurement points P1 and P2 set between the switch 31 and the contacts 361 and 362. ing. Therefore, the auxiliary contact 313 is not required for the switch 31 of the connector 30, and the first detection unit 331 is configured so that the switch 31 does not include the auxiliary contact 313 even if the switch 31 is used. Open / closed state can be detected. Therefore, when the first detection unit 331 detects the closed state of the switch 31 and the second detection unit 332 detects the non-attached state of the connector 30, the processing unit 33 causes the switch 31 to malfunction. Judge that there is.
- the second detection unit 332 detects whether the body 301 of the connector 30 is attached to the connection port 42 or not attached using the voltage value of the control line 233.
- other configurations may be adopted in order to detect whether the body 301 of the connector 30 is attached or not attached to the connection port 42.
- the body 301 of the connector 30 may be provided with a small switch such as a microswitch at a portion where it is inserted into and removed from the connection port 42.
- a small switch such as a microswitch
- the second detection unit 332 detects whether or not the connector 30 is connected to the connection port 42 according to the on / off state of the contacts of the small switch.
- the processing unit 33 provided in the connector 30 not only detects an abnormality of the switch 31 built in the connector 30 but also the switch 43 provided in the electric vehicle 40. It is configured to detect anomalies.
- the processing unit 33 monitors the voltage value between the measurement points P1 and P2 set in the two electric paths 511 and 512 between the switch 31 and the insertion unit 304, and uses the voltage value to switch the switch 31. And it is comprised so that abnormality of the switch 43 may be detected.
- the processing unit 33 monitors the voltage value between the measurement points P1 and P2 with the measurement unit 333 without flowing a small current separately, thereby the switch 31 and the switch 43. A configuration for detecting abnormalities is adopted.
- the processing unit 33 includes the measurement unit 333 described above and a determination unit 330 that detects the presence / absence of an abnormality in the switch 31 and the switch 43 using a result measured by the measurement unit 333.
- the configuration for notifying the power conversion device 10 of the determination result of the determination unit 330 from the notification unit 34 is the same as in the first embodiment.
- the measuring unit 333 measures the voltage value between the electric paths 511 and 512 in the open state of the switch 43 provided in the electric vehicle 40.
- the determination unit 330 compares the voltage value measured by the measurement unit 333 with a predetermined threshold value, and determines that the switch 43 is abnormal when the voltage value exceeds the threshold value.
- the determination unit 330 outputs a binary signal that determines whether the switch 43 is normal or abnormal. This binary signal is transmitted to the power conversion apparatus 10 through the notification unit 34.
- the switch 31 provided in the connector 30 is in an open state or the power converter 10 is not outputting power, the power source that generates a voltage between the electric paths 511 and 512 is only the storage battery 41. Therefore, in this state, it is possible to determine whether the switch 43 provided in the electric vehicle 40 is in the open state or the closed state based on the voltage value between the measurement points P1 and P2. On the other hand, when the switch 43 provided in the electric vehicle 40 is in the open state and the power conversion device 10 outputs power, the connector 30 is connected to the connector 30 based on the voltage value between the measurement points P1 and P2. It is possible to determine whether the provided switch 31 is open or closed.
- the switch 31 Needs to be in an open state or in a state where the power converter 10 is not outputting power. In other words, even when the temperature of the insertion portion 304 of the switch 31 is abnormally increased or when an abnormal current passes through the switch 31, the measurement of the measurement unit 333 is performed even when the switch 31 shifts to the open state. Based on the result, it becomes possible to detect whether the switch 43 is open or closed.
- the electronic control unit 45 of the electric vehicle 40 performs control to shift the switch 43 to the open state
- the contacts 431 and 432 of the switch 43 do not shift to the open state due to welding or the like. It is necessary to detect as 43 abnormalities.
- the output of the determination unit 330 becomes H level.
- the electronic control unit 45 of the electric vehicle 40 notifies the power converter 10 by CAN communication that the control for shifting the switch 43 to the open state has been performed. Therefore, the power conversion device 10 can recognize the abnormality of the switch 43 by associating the output of the determination unit 330 received through the notification unit 34 with the control content of the electronic control unit 45 received by CAN communication. become.
- the processing unit 33 may determine whether or not an abnormality has occurred in the switch 43 by acquiring the control content of the electronic control unit 45 and combining it with the result of measurement by the measurement unit 333. .
- the processing contents of the control of the electronic control unit 45 do not have to be directly acquired by the processing unit 33, and the processing unit 33 receives the contents notified from the electronic control unit 45 to the power conversion device 10 by CAN communication. It may be configured as follows.
- the power conversion device 10 may determine that the switch 43 has shifted to the open state when the end of charging or the end of discharging is instructed from the electronic control unit 45 of the electric vehicle 40.
- the electronic control unit 45 does not need to notify the power conversion device 10 that the switch 43 has been moved to the open state, and only the end of charging or discharging is electronically controlled in the charging or discharging process of the storage battery 41.
- the unit 45 may be notified.
- the processing unit 33 measures the voltage value between the measurement points P ⁇ b> 1 and P ⁇ b> 2 by the measurement unit 333 when the switch 43 is controlled to be in the open state. Then, the determination unit 330 determines that the switch 43 has no abnormality if the voltage value measured by the measurement unit 333 is less than or equal to the threshold value, and if the voltage value measured by the measurement unit 333 exceeds the threshold value, the switch 43 It is judged that there is an abnormality. Further, the determination unit 330 outputs a binary signal indicating whether there is an abnormality or not, and notifies the power converter 10 of the binary signal.
- the processing unit 33 shown in the figure includes a control unit 334 that receives the content of control of the switch 43 by the electronic control unit 45 provided in the electric vehicle 40 and determines the timing of measurement by the measurement unit 333.
- the control unit 334 of the present embodiment employs a configuration that determines measurement timing in accordance with an instruction from the power conversion device 10. That is, a configuration is adopted in which when the end of charging or discharging of the storage battery 41 is notified from the electronic control unit 45 to the power conversion device 10, an instruction is given from the power conversion device 10 to the control unit 334. Upon receiving this instruction from the power conversion device 10, the control unit 334 causes the measurement unit 333 to perform measurement.
- the measuring unit 333 includes a plurality (here, seven) of constant current diodes D1 to D7, a photocoupler 3331, and a semiconductor relay 3332.
- a plurality of constant current diodes D1 to D7 are connected in series.
- the plurality of constant current diodes D1 to D7, the primary side of the photocoupler 3331, and the secondary side of the semiconductor relay 3332 form a series circuit, and this series circuit is a measurement point P1 defined in the electric paths 511 and 512. , P2 are connected.
- the primary side of the semiconductor relay 3332 is connected to the control unit 334.
- the secondary side of the photocoupler 3331 is connected to the determination unit 330.
- the control unit 334 instructs the timing for measuring the voltage value between the measurement points P1 and P2.
- the determination unit 330 monitors whether or not an abnormality has occurred in the switch 43 provided in the electric vehicle 40 by monitoring the output of the photocoupler 3331 while the control unit 334 is turning on the semiconductor relay 3332. to decide.
- the measurement unit 333 shown in FIG. 5 determines the voltage value at which the secondary side of the photocoupler 3331 is turned on by the constant current diodes D1 to D7, the determination unit 330 has the interval between the measurement points P1 and P2.
- the function of comparing the voltage value of with the threshold value becomes unnecessary.
- the measurement unit 333 illustrated in FIG. 5 is also used as a part of the function of the determination unit 330.
- the control unit 334 turns on the semiconductor relay 3332 in accordance with an instruction from the power conversion device 10.
- the semiconductor relay 3332 is turned on, the voltage value between the measurement points P1 and P2 is measured by the measurement unit 333, and the voltage of the storage battery 41 is applied to the measurement points P1 and P2 depending on whether the photocoupler 3331 is on or off.
- the determination unit 330 recognizes whether or not it has been.
- the control unit 334 notifies the determination unit 330 of the timing when the instruction is received from the power conversion device 10, thereby causing the determination unit 330 to receive the measurement result by the measurement unit 333.
- the power conversion device 10 gives an instruction to the control unit 334, it is estimated that the switch 43 provided in the electric vehicle 40 has shifted to the open state. Therefore, the voltage value measured by the measurement unit 333 at this time is When the threshold value is exceeded, it is determined that the switch 43 is abnormal. Here, it is assumed that the power conversion device 10 has stopped outputting when the power conversion device 10 gives an instruction to the control unit 334.
- the control unit 334 receives the instruction from the power conversion device 10, turns on the semiconductor relay 3332, and causes the measurement unit 333 to measure the voltage value. On the other hand, the control unit 334 performs a confirmation process between the power conversion apparatus 10 and the electronic control unit 45 immediately before the latch lever 322 (see FIG. 2) can be moved by the opening / closing mechanism 32 of the connector 30.
- the semiconductor relay 3332 may be turned on when triggered.
- the power conversion device 10 when the power conversion device 10 receives a stop request from the electric vehicle 40 when the storage battery 41 is charged or discharged, the power conversion device 10 performs a predetermined confirmation process and then opens and closes the opening / closing mechanism of the connector 30. The electric power to the actuator 321 provided at 32 is stopped.
- the electronic control unit 45 At the start of the above-described confirmation process, the electronic control unit 45 has completed the control for shifting the switch 43 to the open state. Therefore, the measurement unit 333 measures the voltage value of the measurement points P1 and P2 when the switch 43 is in the open state, and the determination unit 330 causes the switch 43 to switch to the switch 43 when the measured voltage value exceeds the threshold value. Judge that there is an abnormality.
- the power conversion device 10 prohibits the movement of the release button 323 without stopping the power to the actuator 321 of the opening / closing mechanism 32. Is desirable.
- the power converter 10 desirably displays on the display that the connector 30 cannot be separated from the connection port 42 due to an abnormality of the switch 43.
- the processing unit 33 determines that the switch 43 is normal, the power conversion apparatus 10 performs a confirmation process with the electronic control unit 45 and then energizes the actuator 321 of the switching mechanism 32. And the operation of the release button 323 is permitted.
- the processing unit 33 and the notification unit 34 are provided in the connector 30, but the connector 30 may include an indicator lamp (not shown) that displays the result of the determination by the processing unit 33.
- the notification unit 34 may be omitted.
- the determination unit 330 and the control unit 334 may be provided separately from the connector 30. That is, it is only necessary that the measurement unit 333 of the processing unit 33 is provided in the connector 30. In other words, the processing unit 33 may be distributed between the power conversion device 10 and the connector 30.
- the notification unit 34 may notify the power conversion device 10 of the result measured by the measurement unit 333.
- the determination unit 330 provided in the power conversion device 10 determines whether the switch 43 has an abnormality using the information received through the notification unit 34 and the information that instructs the measurement unit 333 about the timing of measurement. You just have to judge. If the measurement unit 333 has the configuration shown in FIG. 5, the information output from the measurement unit 333 is binary, and the configuration of the notification unit 34 is the same as the configuration example described above.
- the processing unit 33 includes the measurement unit 333 and the determination unit 330.
- the measuring unit 333 measures the voltage value at the measurement points P1 and P2 defined in the electric paths 511 and 512 between the switch 31 and the battery (storage battery 41) in the connector 30.
- the determination unit 330 compares the voltage value measured by the measurement unit 333 with a predetermined threshold value.
- the determination unit 330 is configured such that the switch 43 that is the second switch inserted in the electric circuits 521 and 522 that are the second electric circuit provided between the battery (storage battery 41) and the connection port 42 is the electric circuit. When the voltage value measured by the measurement unit 333 exceeds the threshold value in a state where 512 and 522 are cut off, it is determined as abnormal.
- the determination unit 330 is measured by the measurement unit 333 in a state where no power is output from the power conversion device 10 and the switch 43 is instructed to open the electric paths 521 and 522.
- the measured voltage value exceeds the threshold value, it is determined that the switch 43 is abnormal. That is, the period in which the switch 43 is in the open state is a period in which power transfer between the connector 30 and the battery (storage battery 41) is stopped.
- the voltage values at the measurement points P1 and P2 exceed the threshold during this period, the voltage is applied to the parts (contacts 361 and 362 and contacts 421 and 422) that electrically connect the connector 30 and the connection port 42. Indicates the state of being applied.
- the processing unit 33 is configured to determine that the above-described condition is satisfied as abnormal. Accordingly, the determination unit 330 can determine whether or not the switch 43 is abnormal by a simple process of simply comparing the voltage value measured by the measurement unit 333 with the threshold value.
- the processing unit 33 measures the voltage values of the measurement points P1 and P2 set between the switch 31 and the contacts 361 and 362 in the electric paths 511 and 512 with the switch 43 opened.
- a portion 333 is provided in the connector 30.
- the determination unit 330 detects the presence / absence of an abnormality based on the measurement result of the measurement unit 333. Therefore, even if the determination unit 330 is in a state where the temperature of the insertion unit 304 exceeds a predetermined temperature and the switch 31 is in an open state, for example, whether the switch 43 is abnormal based on the measurement result of the measurement unit 333 Can be detected.
- the processing unit 33 is provided in the connector 30, and the connector 30 includes a notification unit 35 that notifies the power conversion device 10 of a binary signal representing a determination result by the processing unit 33. . That is, the processing unit 33 performs the determination up to the presence / absence of abnormality of the switch 43 by the connector 30 and transmits a binary signal representing the determination result to the power conversion device 10. Therefore, the processing unit 33 can suppress an increase in the amount of data transmitted to the power conversion device 10 and is less susceptible to noise than the case where the measurement value of the measurement unit 333 is transmitted to the power conversion device 10. Become.
- the switch 31 provided in the connector 30 or the electric vehicle 40 is measured by measuring the voltage value between the measurement points P ⁇ b> 1 and P ⁇ b> 2 defined in the electric paths 511 and 512 of the connector 30. It is determined whether or not the switch 43 provided in is abnormal. On the other hand, if there is a capacity component generated by the electric paths 511 and 512 of the connector 30 or the electric paths 521 and 522 of the electric vehicle 40, the measuring unit 333 measures even if the switch 31 or the switch 43 is open. The voltage value may exceed a threshold value.
- a capacitive component exists between the lines of the electric paths 521 and 522 between the switch 43 and the connection port 42. Also in the connector 30, a capacitive component exists between the lines of the electric paths 511 and 512 between the switch 31 and the insertion portion 304. However, since the electric paths 511 and 512 are shorter than the electric paths 521 and 522, the capacitance components in the electric paths 511 and 512 can be ignored. Capacitance components in the electric paths 521 and 522 are, for example, 1 ⁇ F or less.
- the measurement unit 333 may erroneously measure the voltage value. That is, even if the switch 43 normally shifts from the closed state to the open state, the voltage value measured by the measuring unit 333 is not immediately reduced below the threshold due to the above-described capacitance component. 330 may determine that the switch 43 is abnormal.
- This embodiment employs a configuration in which the processing unit 33 includes the discharge unit 335 in order to avoid such an erroneous determination associated with the capacitive component.
- the discharge unit 335 has a function of discharging the charge accumulated in the above-described capacitance component.
- the discharge unit 335 is also used as the measurement unit 333. That is, the processing unit 33 is configured not to include the discharge unit 335 separately, but also to use the measurement unit 333 as the discharge unit 335. Therefore, an increase in the number of parts is suppressed while the discharge part 335 is provided.
- the measurement unit 333 employs the configuration shown in FIG.
- the semiconductor relay 3332 When the semiconductor relay 3332 is turned on, the measuring unit 333 having this configuration conducts between the measurement points P1 and P2 through a series circuit of the plurality of constant current diodes D1 to D7 and the primary side of the photocoupler 3331. Therefore, if there is a residual charge in the above-described capacitance component, the residual charge is discharged through this series circuit.
- the processing unit 33 turns on the semiconductor relay 3332 and then passes a voltage between the measurement points P ⁇ b> 1 and P ⁇ b> 2 after a predetermined delay time determined as the time for which the residual charge is discharged. Measure the value. Therefore, the voltage value measured by the measuring unit 333 is free from the influence of the residual charge, and it is possible to accurately determine whether or not the switch 43 has an abnormality based on the voltage value. That is, the processing unit 33 uses the discharge unit 335 that also serves as the measurement unit 333 to remove the residual charge, and then measures the voltage value between the measurement points P1 and P2 by the measurement unit 333. Based on the result, the determination unit 330 determines whether the switch 43 is abnormal.
- FIG. 6 assumes a state in which the output of the power converter 10 is not applied to the measurement points P1 and P2.
- the switch 43 changes from the closed state to the open state at time t1, the storage battery 41 is disconnected from the measurement points P1 and P2. Therefore, the residual charge existing in the above-described capacitance component is gradually released by natural discharge, and the voltage value between the measurement points P1 and P2 slightly decreases. Thereafter, when the control unit 334 turns on the semiconductor relay 3332 at time t2, the measurement unit 333 functions as the discharge unit 335, and the voltage value between the measurement points P1 and P2 rapidly decreases.
- the determination unit 330 reads the voltage value measured by the measurement unit 333 and determines whether or not an abnormality has occurred in the switch 43. Ideally, the voltage value measured by the measuring unit 333 is 0 V, and if the switch 43 is normally shifted to the open state, the determination unit 330 determines that the switch 43 is normal.
- the connector 30 is connected between the switch 43 and the power conversion device 10 in the electric paths 511 and 512 between the power conversion device 10 and the battery (storage battery 41).
- a discharge unit 335 is provided for discharging residual charges generated by the capacitance component. Therefore, the processing unit 33 can avoid erroneous detection due to the influence of the residual charge in the capacitive component.
- the discharge unit 335 is also used as the measurement unit 333. Therefore, the configuration is simplified compared to the case where the discharge unit 335 is provided separately from the measurement unit 333.
- discharge unit 335 may be provided separately from the measurement unit 333.
- the configuration described in the present embodiment can be appropriately combined with the modification of the third embodiment.
- the connector 30 includes terminals 531 to 534 to which the cable 20 is connected.
- the connector 30 includes two control lines 236 and 237 included in the cable 20 in addition to a terminal 531 that connects the power line 21 to the electric path 511 and a terminal 532 that connects the power line 22 to the electric path 512.
- the two control lines 236 and 237 are desirably used also as the control lines 231 to 235 described in the first embodiment, but here, for the sake of simplicity, the control lines 236 and 237 are used as the control lines 231 to 235. It should be noted separately.
- the control lines 236 and 237 may also be used as communication lines for CAN communication.
- the connector 30 shown in FIG. 7 has shown the principal part of this embodiment, and the structures, such as the switch 31 and the process part 33, are abbreviate
- the electric circuit 511 is provided between the terminal 531 and the contact 361, and the electric circuit 512 is provided between the terminal 532 and the contact 362.
- the connector 30 of this embodiment includes a first power feeding unit 541 connected to terminals 533 and 534 and a second power feeding unit 542 connected to contacts 361 and 362.
- the actuator 321 of the opening / closing mechanism 32 is connected so that power is supplied from both the first power supply unit 541 and the second power supply unit 542.
- the first power supply unit 541 supplies power from the power converter 10 to the actuator 321, and the second power supply unit 542 supplies power from at least the electric vehicle 40 to the actuator 321.
- the opening / closing mechanism 32 selects the locked state and the unlocked state by the operation of the actuator 321.
- the locked state removal of the body 301 from the connection port 42 is prohibited when the body 301 is attached to the connection port 42.
- the unlocked state removal of the body 301 from the connection port 42 is permitted when the body 301 is attached to the connection port 42.
- the actuator 321 is locked when power is supplied, and is unlocked when power supply is stopped.
- the opening / closing mechanism 32 is supplied with power to the first power supply unit 541 from the power conversion device 10 through the terminals 533 and 534, and is supplied with power to the second power supply unit 542 from the electric vehicle 40 through the contacts 361 and 362. In some cases, it becomes locked.
- the power conversion apparatus 10 selects whether to supply power to the control power supply 14 that supplies power to the connector through the control lines 236 and 237 and the first power supply unit 541. And a control circuit 16.
- the control circuit 16 controls the timing to turn on the control switch 161 connected in series to the control power supply 14.
- the control power supply 14 supplies power to the first power supply unit 541 through the cable 20 while the control switch 161 is on.
- the terminals 531 and 532 of the connector 30 are electrically connected to the conversion circuit 11 of the power conversion device 10 via the power lines 21 and 22 of the cable 20. Further, the terminals 533 and 534 of the connector 30 are electrically connected to the series circuit of the control power supply 14 and the control switch 161 in the power conversion device 10 via the control lines 236 and 237 of the cable 20.
- the first power supply unit 541 is configured to supply power to the opening / closing mechanism 32 using the power supplied from the power conversion device 10 through the control lines 236 and 237 that are different paths from the power lines 21 and 22.
- the second power feeding unit 542 is configured to supply power to the opening / closing mechanism 32 using power supplied from the electric paths 511 and 512 electrically connected to the power supply lines 21 and 22.
- the first power supply unit 541 is provided between terminals 533 and 534 electrically connected to the control lines 236 and 237 and the actuator 321 of the opening / closing mechanism 32.
- the first power supply unit 541 supplies power supplied from the control power supply 14 through the control lines 236 and 237 to the actuator 321 of the opening / closing mechanism 32 during a period in which the control switch 161 is on.
- the control switch 161 is controlled by the control circuit 16 and is turned on during a period when the storage battery 41 is charged or discharged, and is turned off when the storage battery 41 is not charged or discharged.
- the first power feeding unit 541 includes a diode D11 connected between the terminal 533 and the actuator 321.
- the diode D ⁇ b> 11 is connected in a direction that blocks a current from the coil for driving the actuator 321 toward the terminal 533. Therefore, the diode D11 functions to prevent the power supplied from the second power feeding unit 542 to the actuator 321 from leaking to the power conversion device 10 through the first power feeding unit 541.
- the 2nd electric power feeding part 542 is provided with the conversion circuit 544 connected to the electric circuit 511,512.
- the connection point between the conversion circuit 544 and the electric paths 511 and 512 is preferably between the switch 31 (see FIG. 1) and the contacts 361 and 362.
- the conversion circuit 544 is a DC / DC converter, and supplies DC power obtained by stepping down the voltage between the lines of the electric paths 511 and 512 to the actuator 321 of the switching mechanism 32.
- the DC voltage value output from the conversion circuit 544 is preferably set to a voltage value lower than that of the control power supply 14 of the control circuit 16 provided in the power conversion device 10.
- the second power feeding unit 542 uses the power from the storage battery 41 provided in the electric vehicle 40 and the power from the conversion circuit 11 provided in the power conversion device 10 to supply power to the actuator 321 of the opening / closing mechanism 32. Is configured to supply.
- the second power feeding unit 542 includes a diode D12 connected between the conversion circuit 544 and the actuator 321 in addition to the conversion circuit 544.
- the diode D12 is connected in a direction in which a current flowing from the coil for driving the actuator 321 to the conversion circuit 544 is elementized. Therefore, the diode D12 functions to prevent the electric power supplied from the first power supply unit 541 to the actuator 321 from leaking to the electric vehicle 40 through the second power supply unit 542.
- the diode D11 and the diode D12 are not essential, and one or both of them can be omitted.
- the actuator 321 of the opening / closing mechanism 32 provided in the connector 30 is supplied with electric power from the control power supply 14 of the power conversion device 10 through the first power supply unit 541 and from the electric paths 511 and 512 to the second power supply unit 542. Power is supplied through.
- the actuator 321 of the opening / closing mechanism 32 even if an abnormality such as disconnection of the cable 20 occurs, even if power is not supplied from the power conversion device 10 to the actuator 321 of the opening / closing mechanism 32, the actuator 321 from the storage battery 41 of the electric vehicle 40 through the second power feeding unit 542. Is supplied with power. As a result, even when an abnormality occurs such that the cable 20 is disconnected, the opening / closing mechanism 32 is maintained in the locked state.
- the connector 30 of the present embodiment is less likely to be released from the locked state even when an abnormality occurs in the switches 31 and 43 or the cable 20.
- an abnormality such that the cable 20 is disconnected and no power is supplied from the power conversion device 10 and the switch 43 of the electric vehicle 40 is welded
- the electric power from the storage battery 41 is opened and closed.
- the locked state of the mechanism 32 is maintained.
- the connector 30 is unlikely to be removed from the connection port 42, and it is avoided that the contacts 421 and 422 of the connection port 42 are exposed while being electrically connected to the storage battery 41.
- the second power feeding unit 542 supplies power to the actuator 321 using power from the electric paths 511 and 512.
- the electric power from the storage battery 41 of the electric vehicle 40 is supplied to the actuator via the electric paths 511 and 512 connected to the conversion circuit 11 of the power conversion device 10.
- the first power feeding unit 541 has priority over the second power feeding unit 542 to the actuator 321. Power will be supplied. Therefore, the period during which power is supplied from the storage battery 41 to the actuator 321 is reduced, and as a result, a decrease in the remaining capacity of the storage battery 41 can be suppressed.
- the power lines 21 and 22 of the cable 20 are connected to the terminals 531 and 532 of the connector 30, but the terminals are between the power lines 21 and 22 of the cable 20 and the electric paths 511 and 512 of the connector 30.
- a configuration in which 531 and 532 are not provided may be employed. That is, the power lines 21 and 22 of the cable 20 may be extended to form the electric paths 511 and 512.
- the contacts 361 and 362 provided on the connector 30 are directly connected to the power lines 21 and 22 of the cable 20.
- the connector 30 described in the present embodiment includes a body 301, an opening / closing mechanism 32, a first power feeding unit 541, and a second power feeding unit 542.
- the body 301 can select a mounting state or a non-mounting state with respect to a connection port 42 provided in a device (electric vehicle 40) on which a battery (storage battery 41) is mounted.
- the opening / closing mechanism 32 includes an actuator 321. When the body 301 is attached to the connection port 42, the opening / closing mechanism 32 is in a locked state in which removal of the body 301 from the connection port 42 is prohibited, and an unlocked state in which removal of the body 301 from the connection port 42 is permitted. And is configured to select.
- the 1st electric power feeding part 541 supplies electric power to the actuator 321 from the power converter device 10 connected to the electric power grid
- the 2nd electric power feeding part 542 supplies electric power to the actuator 321 from an apparatus (electric vehicle 40) at least among the power converter device 10 and an apparatus (electric vehicle 40).
- the actuator 321 sets the opening / closing mechanism 32 in a locked state during a period when power is supplied, and sets the opening / closing mechanism 32 in an unlocked state during a period when power is not supplied.
- the path for supplying power to the actuator 321 is duplicated and locked when there is an abnormality. It becomes difficult to release the state.
- the first power feeding unit 541 receives power from the power conversion device 10 through a different path from the electric paths 511 and 512 between the power conversion device 10 and the battery (storage battery 41). Moreover, the 2nd electric power feeding part 542 receives electric power from the electric circuit 511,512 between the power converter device 10 and a battery (storage battery 41). Therefore, the power receiving path between the first power feeding unit 541 and the second power feeding unit 542 is a separate system, and it is easy to secure power to the actuator 321.
- the connector 30 of this embodiment constitutes a power conversion system by being electrically connected to the power conversion device 10 via the cable 20.
- the connector 30 supplies driving power from the control power supply 14 to the opening / closing mechanism 32 via the control line 23 while the storage battery 41 is being charged and discharged, thereby bringing the opening / closing mechanism 32 into a locked state. That is, while the storage battery 41 is being charged or discharged, removal of the body 301 from the connection port 42 is prohibited.
- control unit 552 be configured to turn off the switch element 551 only when charging or discharging is not being performed and the processing unit 33 has not detected an abnormality.
- FIG. 7 shows only the main parts necessary for the description of the present embodiment, but other configurations are adopted according to the first embodiment. Moreover, it is possible to combine the structure of each embodiment mentioned above with the structure of this embodiment suitably.
- the connector 30 As shown in FIG. 8, the connector 30 according to the present embodiment includes a switch circuit 55 and a second power feeding unit 543 instead of the second power feeding unit 542, and the configuration of the connector 30 described in the fifth embodiment. Is different.
- the second power feeding unit 542 receives power from the electric paths 511 and 512, while the second power feeding unit 543 receives power from the in-vehicle battery 46 as an auxiliary power source.
- symbol is attached
- the second power supply unit 543 is configured to supply electric power to the actuator 321 using electric power from the in-vehicle battery 46 as an auxiliary power source provided separately from the storage battery 41 that is an energy source for traveling in the electric vehicle 40.
- the in-vehicle battery 46 has a smaller capacity than the storage battery 41, and supplies power for driving a device that forms the vehicle interior environment in the electric vehicle 40, power for operating the electronic control unit 45, and the like.
- the in-vehicle battery 46 is a lead storage battery, for example, and outputs DC 12V, for example. In the case of a device that is not the electric vehicle 40, another auxiliary power source that replaces the in-vehicle battery 46 is used.
- the connection port 42 includes contacts 423 and 424 connected to the in-vehicle battery 46, and the insertion unit 304 is connected to the second power feeding unit 543.
- Contacts 363 and 364 are provided. When the body 301 of the connector 30 is attached to the connection port 42, the contacts 363 and 364 are in contact with the contacts 423 and 424, and the second power feeding unit 543 is electrically connected to the in-vehicle battery 46.
- the switch circuit 55 includes a switch element 551 connected in series to the coil of the actuator 321 and a control unit 552 that turns the switch element 551 on or off according to the following conditions.
- the control unit 552 turns on the switch element 551 when at least one of the voltage value between the electric paths 511 and 512 and the voltage value between the terminals 533 and 534 is equal to or greater than a predetermined threshold.
- a predetermined threshold As the switch element 551, an electromagnetic relay or a semiconductor relay is used.
- FIG. 8 the connection relationship of the switch circuit 55 is schematic, and the switch circuit 55 is connected to the electric circuit 511 and the terminal 533. The switch circuit 55 is actually connected so as to monitor the voltage value between the electric circuits 511 and 512 and the voltage value between the terminals 533 and 534.
- the control unit 552 of the switch circuit 55 outputs a logical sum of the condition that the voltage value between the electric paths 511 and 512 is equal to or greater than the threshold value and the condition that the voltage value between the terminals 533 and 534 is equal to or greater than the threshold value. It is configured as follows. That is, when at least one of the two conditions is satisfied, the switch element 551 is turned on. In order to perform such a combination of conditions, the control unit 552 includes an OR circuit. Further, the control unit 552 turns off the switch element 551 if both the voltage value between the electric paths 511 and 512 and the voltage value between the terminals 533 and 534 are less than the threshold value. In other words, the switch circuit 55 switches the switch element 551 between when the voltage is applied to the electric paths 511 and 512 and when the voltage is applied from the control power supply 14 of the power converter 10 to the terminals 533 and 534. turn on.
- the first power supply unit 541 supplies power to the actuator 321 of the opening / closing mechanism 32 using the power supplied from the control circuit 16 of the power conversion device 10 through the control lines 236 and 237 while the switch element 551 is on.
- the second power feeding unit 543 supplies power to the actuator 321 of the opening / closing mechanism 32 using the power supplied from the in-vehicle battery 46 of the electric vehicle 40 through the contacts 363 and 364 while the switch element 551 is on. .
- the first power supply unit 541 includes a diode D11 between the terminal 533 and the coil of the actuator 321 as in the first embodiment.
- the second power supply unit 543 includes a diode D13 between the contact 363 and the coil of the actuator 321.
- the diode D ⁇ b> 13 is connected in a direction that blocks a current from the coil for driving the actuator 321 of the opening / closing mechanism 32 to the contact 363.
- control unit 552 is configured to turn off the switch element 551 when it is not during charging or discharging and when the processing unit 33 has not detected an abnormality. It is desirable that
- the connector 30 of the present embodiment described above includes the switch circuit 55 provided with the switch element 551 inserted between the first power supply unit 541 and the second power supply unit 542 and the actuator 321.
- the 1st electric power feeding part 541 is comprised so that it may receive electric power from the power converter device 10 by a path
- the second power feeding unit 542 is configured to receive power from an auxiliary power source (on-vehicle battery 46) provided in the device (electric vehicle 40) through a path different from the electric paths 511 and 512.
- the switch circuit 55 includes a control unit 552 that turns on the switch element 551 when at least one of the voltage value received by the first power supply unit 541 and the voltage value of the electric paths 511 and 512 is equal to or greater than a predetermined threshold.
- the 1st electric power feeding part 541 is comprised so that it may receive electric power from the control power supply 14 provided in the power converter device 10.
- the switch element 551 is turned on when power is supplied to the electric paths 511 and 512 or when power is supplied from the auxiliary power source (vehicle battery 46) of the device (electric vehicle 40).
- the actuator 321 Therefore, if a voltage is applied to the electric paths 511 and 512 or a voltage is applied from the auxiliary power source (vehicle battery 46), the connector 30 can maintain the locked state.
- the first power feeding unit 541 also receives power from the control power supply 14 provided in the power conversion device 10, and therefore, between the power conversion device 10 and the battery (storage battery 41). There is no need to receive power from the electric paths 511 and 512. Therefore, the 1st electric power feeding part 541 and the 2nd electric power feeding part 542 can be comprised only with components corresponding to the voltage of about 12V, for example.
- FIG. 9 shows a modification of this embodiment.
- the switch circuit 55 switches the switch element 551 on and off on the condition of the voltage value between the terminals 533 and 534.
- the switch circuit 55 is configured to turn on the switch element 551 when the voltage value between the terminals 533 and 534 rises, and to turn off the switch element 551 when the voltage value between the terminals 533 and 534 falls. . That is, the switch circuit 55 detects the rise of the voltage value and holds the state where the switch element 551 is turned on, and detects the fall of the voltage value and holds the state where the switch element 551 is turned off. It is configured as a self-holding type.
- the connector 30 of the modification shown in FIG. 9 includes a switch circuit 55 provided with a switch element 551 inserted between the first power supply unit 541 and the second power supply unit 542 and the actuator 321.
- the 1st electric power feeding part 541 is comprised so that it may receive electric power from the power converter device 10 by a path
- the second power feeding unit 542 is configured to receive power from an auxiliary power source (on-vehicle battery 46) provided in the device (electric vehicle 40) through a path different from the electric paths 511 and 512.
- the switch element 551 is a self-holding type, and the switch circuit 55 is configured to turn on the switch element 551 when the voltage value received by the first power feeding unit 541 rises and turn it off when the switch element 551 falls.
- the 1st electric power feeding part 541 is equipped with the diode D11 for backflow prevention between the site
- the switch circuit 55 is realized by using, for example, a GTO (Gate Turn-Off) thyristor as the switch element 551.
- GTO Gate Turn-Off
- the control unit 552 outputs a positive pulse when the voltage value between the terminals 533 and 534 rises, and the negative polarity when the voltage value between the terminals 533 and 534 falls. It is comprised so that the pulse of this may be output.
- the control unit 552 inputs a positive pulse current to the gate of the switch element 551 to turn on the switch element 551. Thereafter, the switch circuit 55 maintains the ON state until the current passing through the switch element 551 becomes equal to or less than a specified value or a reverse current flows through the gate. Next, when the voltage at the terminals 533 and 534 falls, the control unit 552 inputs a negative pulse current to the gate of the switch element 551 to turn off the switch element 551.
- the switch element 551 when the voltage value applied from the control power supply 14 to the connector 30 by the power conversion device 10 is raised, the switch element 551 is turned on and the open / close mechanism 32 is locked. Moreover, when the voltage value which the power converter device 10 gives to the connector 30 from the control power supply 14 falls, the switch element 551 will be turned off and the opening-and-closing mechanism 32 will be in an unlocked state.
- the switch circuit 55 is a self-holding type, and the control unit 552 of the switch circuit 55 only needs to detect the rise and fall of the voltage value between the terminals 533 and 534, and in other periods the power Therefore, power consumption by the control unit 552 is suppressed.
- the switch element 551 used in the switch circuit 55 is not limited to a GTO thyristor, and a transistor such as a bipolar transistor or a MOSFET (Metal-Oxide-Semiconductor-Field-Effect-Transistor) can also be used.
- a transistor When a transistor is used for the switch element 551, a self-holding switch circuit 55 may be realized by using a flip-flop for the control unit 552.
- JK flip-flop For example, it is assumed that a JK flip-flop is used as the control unit 552, for example.
- the JK flip-flop outputs the output value of the output terminal (Q terminal) every time the input to the clock terminal (ELK terminal) rises if both the inputs of the J terminal and the K terminal are H level (logical value 1). Operates to invert. That is, the JK flip-flop operates as a T flip-flop when both the inputs of the J terminal and the K terminal are at the H level.
- the control unit 552 When a flip-flop is used for the control unit 552 of the switch circuit 55, the control unit 552 is configured to input a trigger signal to the flip-flop in accordance with the rise and fall of the voltage value between the terminals 533 and 534. Is done.
- the switch circuit 55 performs a self-holding operation similarly to the switch circuit 55 using a GTO thyristor. That is, the connector 30 shifts the opening / closing mechanism 32 to the locked state when the voltage value between the terminals 533 and 534 rises, and shifts the opening / closing mechanism 32 to the unlocked state when the voltage between the terminals 533 and 534 falls. .
- the control unit 552 only needs to receive power from the power conversion device 10 during a period in which the switch element 551 is switched on and off, and the control unit 552 performs control while the switch element 551 is held on. It is not necessary to continue supplying power to the unit 552.
- the opening / closing mechanism 32 receives power from the on-vehicle battery 46 of the electric vehicle 40 and maintains the locked state. Further, power may be continuously supplied from the control power supply 14 to the connector 30 while the switch element 551 is on. With this configuration, power consumption of the in-vehicle battery 46 can be suppressed.
- control unit 552 that controls turning on and off of the switch element 551 is provided in the connector 30, but the control unit 552 may be provided in the power conversion device 10.
- a contact that is not used for other purposes as a contact that is used to supply power from the in-vehicle battery 46 to the second power feeding portion 543. That is, it is desirable to use an unused contact of the connector 30 for supplying power from the in-vehicle battery 46 to the second power feeding unit 543.
- FIG. 9 shows only the main parts necessary for the description of the present embodiment, but other configurations are adopted according to the first embodiment. Further, the configurations of the first to fifth embodiments described above can be appropriately combined with the configuration of the present embodiment.
- the connector 30 of this embodiment has the switch circuit 55 omitted from the configuration of the sixth embodiment shown in FIG. 9, and the connection between the in-vehicle battery 46 and the contact 423 of the electric vehicle 40.
- the auxiliary switch 48 is provided.
- the same configurations as those of the sixth embodiment are denoted by common reference numerals and description thereof is omitted.
- the first power feeding unit 541 receives power from the power conversion device 10 through a different path from the power paths 511 and 512 between the power conversion device 10 and the battery (storage battery 41), and the actuator 321. Configured to supply power.
- the second power feeding unit 542 is configured to receive power from an auxiliary power source (on-vehicle battery 46) provided in the device (electric vehicle 40) through a path different from the electrical paths 511 and 512 and feed power to the actuator 321. .
- the electric vehicle 40 includes the auxiliary switch 48 between the in-vehicle battery 46 and the terminal 422. Therefore, the in-vehicle battery 46 can supply power to the second power feeding unit 543 only during a period in which the connector 30 is connected to the connection port 42 and the auxiliary switch 48 is on. In other words, even if the connector 30 is connected to the connection port 42, power is not supplied from the in-vehicle battery 46 to the second power feeding unit 543 if the auxiliary switch 48 is off.
- the auxiliary switch 48 is selected to be on or off in accordance with an instruction received by the electronic control unit 45 of the electric vehicle 40 from the power conversion device 10 through CAN communication.
- the auxiliary switch 48 is selected to be on. Further, when the auxiliary switch 48 is on and the cable 20 is disconnected, for example, the electric vehicle 40 cannot receive an instruction from the power conversion device 10, and thus the auxiliary switch 48 is kept on.
- the connector 30 is connected to the opening / closing mechanism 32 from the in-vehicle battery 46 of the electric vehicle 40 through the second power feeding unit 543. Is supplied with power. That is, the opening / closing mechanism 32 can be maintained in a locked state.
- the connector 30 does not include the switch circuit 55 (see FIG. 8) as in the sixth embodiment. Therefore, when the configuration of the present embodiment is adopted, the body 301 can be made smaller than the configuration of the sixth embodiment.
- FIG. 10 shows only the main parts necessary for the description of the present embodiment, but other configurations are employed in accordance with the first embodiment. Further, the configurations of the first to fifth embodiments described above can be appropriately combined with the configuration of the present embodiment.
- the connector 30 of this embodiment has a configuration in which the operation of the actuator 321 of the opening / closing mechanism 32 is controlled by a control signal from the power converter 10 in the configuration of the second embodiment shown in FIG. 4.
- symbol is attached
- the power conversion device 10 of this embodiment includes a pulse generator 17 that outputs a pulse using the power of the control power supply 14 in addition to the conversion circuit 11 and the control power supply 14.
- the pulse generator 17 includes a control switch 171 and a changeover switch 172.
- the control power supply 14 is connected to the changeover switch 172 via the control switch 171.
- the control power supply 14 desirably has an upper limit on the output current.
- the changeover switch 172 outputs power for driving the actuator 321 of the opening / closing mechanism 32 for a short period of time as necessary during the period when power is supplied from the control power supply 14. This time depends on the specification of the actuator 321 and is set to about 1 second, for example.
- the changeover switch 172 is schematically represented by a double-pole double-throw changeover switch.
- the changeover switch 172 has a configuration capable of generating two types of pulses whose voltage polarities are reversed from each other. Any configuration may be used.
- the changeover switch 172 is configured to set the output to 0 V during a period in which no pulse is generated.
- the changeover switch 172 can be configured by using, for example, an electromagnetic relay provided with a two-pole double-throw contact device.
- the electromagnetic relay is a contact device in which a common contact selectively contacts the first contact and the second contact, and a neutral state in which the common contact does not contact either the first contact or the second contact can be selected. It is desirable to provide.
- Such a contact device includes two common contacts, two first contacts, and two second contacts.
- a configuration including one common contact, one first contact, and one second contact is referred to as a set. That is, the double pole double throw contact device includes two sets.
- the changeover switch 172 is configured using an electromagnetic relay provided with a two-pole double-throw contact device, as shown in FIG. 11, a series circuit of a control power supply 14 and a control switch 171 between two common contacts. Is connected. The first contact of the first set and the second contact of the second set are connected to each other, and the second contact of the first set and the first contact of the second set are connected to each other.
- the changeover switch 172 is output in two lines, one of which is a connection point between the first contact of the first set and the second contact of the second set, and the other is the second contact of the first set and the second contact. This is the connection point with the first contact of the set.
- the polarity of the voltage output from the changeover switch 172 is inverted depending on whether the common contact is conductive with the first contact or the second contact.
- the changeover switch 172 selects whether the common contact is connected to the first contact or the second contact according to the period during which the storage battery 41 is charged or discharged and the period during which the storage battery 41 is not charged. Then, by turning on the control switch 171 in an appropriate period, it becomes possible to generate a pulse having a pulse width corresponding to the on period of the control switch 171 and having the amplitude of the output voltage of the control power supply 14. .
- the pulse generator 17 is not limited to the configuration using the mechanical contacts as described above, and can be configured using an electronic circuit.
- This type of electronic circuit is configured, for example, by combining a one-shot multivibrator and a three-state buffer having a bipolar output.
- the actuator 321 of the opening / closing mechanism 32 includes a polarized electromagnet having one winding. That is, the actuator 321 is of a latching type, and is configured to move the plunger only by temporarily energizing the coil and to self-hold the position of the plunger. In addition, the illustrated actuator 321 is configured to reverse the direction of advancement / retraction of the plunger by reversing the direction of the current supplied to the coil.
- the coil of the actuator 321 is connected to the pulse generator 17 through the control lines 236 and 237 of the cable 20. Therefore, when a pulsed drive voltage is generated from the pulse generator 17, the actuator 321 inverts the direction of movement of the plunger according to the polarity of the drive voltage.
- the actuator 321 has a latching type configuration that shifts the opening / closing mechanism 32 between a locked state and an unlocked state in accordance with the polarity of the pulsed drive voltage output from the pulse generator 17. With this configuration, the opening / closing mechanism 32 selects a locked state and an unlocked state according to the polarity of the pulse generated by the pulse generator 17.
- an invalidation circuit 324 which is a series circuit of a diode D14 and a switch element 553, is connected to the coil of the actuator 321 in parallel.
- the diode D14 is inserted in such a direction as to pass a pulse having a polarity that switches the opening / closing mechanism 32 from the locked state to the unlocked state when the switch element 553 is on.
- the illustrated example is configured so that the opening / closing mechanism 32 is unlocked when the pulse generator 17 generates a pulse in which the upper end of the coil of the actuator 321 is positive.
- the switch element 553 is connected to the processing unit 33 and is normally off, but is turned on when the processing unit 33 detects an abnormality in the switch 31 or the switch 43. In other words, when the body 301 of the connector 30 is attached to the connection port 42 of the electric vehicle 40 and the opening / closing mechanism 32 is in the locked state, the processing unit 33 determines that the switch 31 or the switch 43 is abnormal. When determined, the switch element 553 is turned on. When the switch element 553 is turned on, the pulse generated from the changeover switch 172 is bypassed in the path through the diode D14. That is, the pulse output from the pulse generator 17 is not given to the coil of the actuator 321, and the plunger of the actuator 321 cannot move.
- the measuring unit 333 monitors the abnormality of the switch 31 of the connector 30 or the switch 43 of the electric vehicle 40 by measuring the voltage between the electric circuits 511 and 521. It may be configured to measure 512 currents.
- the actuator 321 includes a first coil 3211, a second coil 3212, and a selection switch 3213. In the actuator 321, the plunger advances and retreats depending on which of the first coil 3211 and the second coil 3212 is energized.
- the selection switch 3213 switches the electric circuit so that one of the first coil 3211 and the second coil 3212 is selectively energized.
- the selection switch 3213 switches the electric circuit in conjunction with the position of the plunger that moves forward and backward by the first coil 3211 and the second coil 3212. That is, when the plunger moves by energizing the first coil 3211, the selection switch 3213 is connected to the second coil 3212. Further, when the plunger moves by energizing the second coil 3212, the selection switch 3213 is connected to the first coil 3211. Therefore, each time the control switch 171 is turned on, the plunger moves in the opposite direction.
- the pulse generator 17 is composed of only the control switch 171, and the direction of movement of the plunger can be reversed each time the control switch 171 is turned on. Therefore, it is not necessary to generate a bipolar pulse, and the configuration of the pulse generator 17 is simplified.
- the switch element 553 is turned on and the locked state is maintained. That is, when the determination unit 330 that determines the state of the electric paths 511 and 512 determines that the locked state cannot be released, the determination unit 330 turns on the switch element 553. As a result, the coil of the actuator 321 is not supplied with electric power due to the pulse from the pulse generator 17, and the locked state is maintained.
- the opening / closing mechanism 32 is in the locked state unless power is supplied to the actuator 321 by the pulse from the pulse generator 17 in the locked state. Maintained. In other words, even when the cable 20 is disconnected or when the coil of the actuator 321 is disconnected, the locked state is maintained and fail-safe is realized.
- the connector 30 of the present embodiment described above includes a body 301, an opening / closing mechanism 32, a processing unit 33, and an invalidation circuit 324.
- the body 301 can select a mounting state or a non-mounting state with respect to a connection port 42 provided in a device (electric vehicle 40) on which a battery (storage battery 41) is mounted.
- the opening / closing mechanism 32 includes a latching type actuator 321 that operates when a pulsed driving voltage is applied. Further, the opening / closing mechanism 32 is in a locked state in which removal of the body 301 from the connection port 42 is prohibited when the body 301 is attached to the connection port 42, and an unlocking unit that permits removal of the body 301 from the connection port 42.
- the lock state is configured to be selected.
- the processing unit 33 determines that the state in which the voltage is applied to the part that electrically connects the connector 30 and the connection port 42 during the period in which the power transfer with the battery (storage battery 41) is stopped is abnormal. Configured as follows.
- the invalidation circuit 324 invalidates the drive voltage so that the drive voltage for shifting the opening / closing mechanism 32 to the unlocked state is not applied to the actuator 321 during the period when the processing unit 33 determines that the abnormality has occurred.
- the connector 30 of this embodiment can detect an abnormality in the processing unit 33 provided in the connector 30.
- the period during which power delivery to the battery (storage battery 41) is stopped corresponds to a period other than during charging or discharging, and the portion where the connector 30 and the connection port 42 are electrically connected is in contact with the battery (storage battery 41). This corresponds to the children 361 and 362 or the contacts 421 and 422. Therefore, the processing unit 33 abnormalizes the state in which the voltage of the power conversion device 10 or the battery (storage battery 41) is applied to the contacts 361, 362 or the contacts 421, 422 during a period other than charging or discharging. It will be judged. That is, the processing unit 33 determines that a case where a voltage is applied to the contacts 361 and 362 or the contacts 421 and 422 is not abnormal even though charging or discharging is not being performed.
- the actuator 321 is a latching type, the actuator 321 operates with only a small amount of power necessary for the transition between the locked state and the unlocked state, and an increase in power consumption is suppressed. That is, the connector 30 according to the present embodiment can maintain the locked state without consuming power when the contacts 311, 312 of the switch 31 or the contacts 431, 432 of the switch 43 are welded. It is.
- the processing unit 33 detects an abnormality, the driving voltage for shifting the opening / closing mechanism 32 from the locked state to the unlocked state is invalidated by the invalidation circuit 324, and therefore, when the abnormality occurs, the operation unit 33 is shifted to the unlocked state. Is prevented and the locked state is maintained. In other words, it is not necessary to provide a control line for maintaining the locked state, and consumption of a limited number of electric circuits provided in the cable 20 is suppressed.
- FIG. 11 shows only the main parts necessary for the description of the present embodiment, but other configurations are employed in accordance with the first embodiment.
- the configuration of the above-described embodiment can be appropriately combined with the configuration of the present embodiment.
- the abnormality of the switch 31 or the switch 43 is detected using the processing unit 33 described in the third embodiment, but the configuration described in the first embodiment, the second embodiment, or the like. It is also possible to use the processing unit 33.
- the power conversion device 10 of this embodiment includes a conversion circuit 11, a control power supply 14, and a control circuit 16.
- the same components as those described in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
- the function of the conversion circuit 11 will be described on the assumption that the power from the storage battery 41 as the first battery mounted on the electric vehicle 40 is converted into AC power equivalent to the system power supply 61. . Therefore, the storage battery 41 mounted on the electric vehicle 40 can be replaced with a fuel cell.
- the power conversion device 10 may have a function used for charging the storage battery 41 as in the above-described embodiments. That is, the power conversion apparatus 10 can apply the technique of the present embodiment even if it is configured to perform power conversion bidirectionally between alternating current and direct current.
- the power conversion device 10 constitutes a distributed power source for the system power source 61 provided by the electric power supplier by using it together with the storage battery 41 mounted on the electric vehicle 40.
- An electric power company means a business that obtains a price for the supply of electric power, and is not limited to an electric power company.
- the control circuit 16 controls the operation of the conversion circuit 11, and the control power supply 14 receives power from at least one of the distribution board 60 and the conversion circuit 11 and supplies power to the control circuit 16.
- the connector 30 is selected to be attached or not attached to the connection port 42 provided in the electric vehicle 40.
- electric circuits 511 and 512 included in the electric circuit between the storage battery 41 and the conversion circuit 11 are formed.
- the connector 30 also includes an auxiliary electric path 513 for supplying power to the control power source 14 from the on-board battery 46 as the second battery mounted on the electric vehicle 40 in order to supply electric power to the equipment provided in the electric vehicle 40.
- the cable 20 that connects the power converter 10 and the connector 30 is connected to power lines 21 and 22 that are connected to the electric paths 511 and 512, a control line 238 that is connected to the auxiliary electric path 513, and a determination circuit 18 that will be described later.
- the control lines 238 and 239 can be selected from the control lines 231 to 235 described in the first embodiment.
- the connector 30 preferably includes a switch element 56 inserted in an auxiliary electric circuit 513 between the in-vehicle battery 46 and the control line 238 of the cable 20.
- the switch element 56 has a configuration in which a switch 561 and a contact device 562 are connected in parallel.
- the switch element 56 opens the auxiliary electric circuit 513 between the control power supply 14 and the in-vehicle battery 46 during a period in which the control power supply 14 receives power from either the distribution board 60 or the conversion circuit 11.
- the switch element 56 makes the electric circuit between the control power supply 14 and the vehicle-mounted battery 46 conductive during the period when the power supply from the power system and the conversion circuit 11 to the control power supply 14 is stopped.
- the switch element 56 may be a momentary switch attached to the connector 30.
- the electric circuit between the control power supply 14 and the vehicle-mounted battery 46 is also used as an electric circuit for supplying current from the control power supply 14 to the actuator 321 of the opening / closing mechanism 32.
- the switch element 56 is preferably inserted between the in-vehicle battery 46 and the actuator 321.
- the actuator 321 includes a non-polar electromagnet. In the power conversion device 10, it is desirable that the voltage value output from the control power supply 14 to the control line 238 is set higher than the voltage value output from the in-vehicle battery 46.
- a surge absorbing circuit which is a series circuit of a diode D15 and a resistor R15, is connected in parallel to the coil of the actuator 321.
- a switch 57 that is turned on when the connector 30 is inserted into the connection port 42 is connected to the actuator 321 in series. Therefore, in a state where the connector 30 is inserted into the connection port 42, the switch 57 is turned on and the actuator 321 is energized, whereby the mounting state of the connector 30 with respect to the connection port 42 is maintained.
- the energization state of the actuator 321 is monitored by the determination circuit 18, and the determination circuit 18 indirectly monitors the state where the connector 30 is connected to the connection port 42 according to the energization state of the actuator 321.
- the power conversion device 10 includes a conversion circuit 11 that charges and discharges the storage battery 41.
- the conversion circuit 11 includes a first converter 111 that performs power conversion between direct current and direct current, and a second converter 112 that performs power conversion between direct current and alternating current.
- the first converter 111 and the second converter 112 deliver DC power bidirectionally via the intermediate bus.
- a smoothing capacitor 113 is connected between the lines of the intermediate bus.
- the first converter 111 is connected to the connector 30 via the switch 19.
- the second converter 112 is connected to the distribution board 60 on the AC side. It is desirable that the switch 19 has a configuration in which an electric circuit can be opened and closed by an external signal like a relay (electromagnetic contactor).
- the first converter 111 is used to adjust the voltage and current conditions when charging the storage battery 41.
- the DC power output from the storage battery 41 is input to the first converter 111, the voltage is adjusted, and then the AC power is converted into the AC power by the second converter 112. Convert.
- the second converter 112 adjusts the frequency and phase of the AC power in order to supply the AC power generated using the power of the storage battery 41 to the power system.
- the first converter 111 and the second converter 112 are configured to perform power conversion using a switching element, and on / off of the switching element is controlled by the control circuit 16. Further, power for operating the control circuit 16 is supplied from the control power supply 14. If power is not supplied to the control power source 14, the control circuit 16 cannot be operated, and as a result, the operation of the conversion circuit 11 is also stopped.
- the control power source 14 can receive power from the power system and the conversion circuit 11, and can also receive power from the in-vehicle battery 46 that supplies power to equipment provided in the electric vehicle 40. It is configured.
- the power conversion device 10 preferably includes a power reception control unit that prohibits the control power supply 14 from receiving power from the in-vehicle battery 46 while the control power supply 14 is receiving power from either the power system or the conversion circuit 11. .
- the power reception control unit includes a contact device 71.
- a power supply circuit 141 and a diode D41 are inserted in the power supply path from the distribution board 60 to the control power supply 14, and a diode D42 that is the same as the power supply circuit 142 is inserted in the power supply path from the conversion circuit 11 to the control power supply 14. .
- a contact device 71, a power supply circuit 143, and a diode D43 serving as a power reception control unit are inserted into a path through which the control power supply 14 receives power from the in-vehicle battery 46.
- the cathodes of the diodes D41 to D43 are commonly connected to the control power supply 14, and backflows to the other power supply circuits 141 to 143 are prevented.
- the function of the contact device 71 will be described later.
- the connector 30 not only forms an electric circuit between the storage battery 41 and the conversion circuit 11 when attached to the connection port 42 but also receives power from the in-vehicle battery 46 to the control power supply 14. 14 and an in-vehicle battery 46 are formed. As described above, the connector 30 includes the switch element 56 inserted in the electric path between the control power supply 14 and the in-vehicle battery 46.
- the control power supply 14 normally receives power from the system power supply 41.
- the conversion circuit 11 is activated. Thereafter, when processing such as communication establishment processing and confirmation processing is completed, the switch 43 is turned on, and the storage battery 41 and the conversion circuit 11 are electrically connected. As described above, after the connector 30 is attached to the connection port 42, it is necessary to wait for a predetermined time to elapse before the storage battery 41 can be charged or discharged.
- the switch element 56 uses a parallel circuit of a momentary switch 561 and a relay contact device 562.
- the contact device 562 is normally kept off.
- the momentary switch 561 generally includes a push button type operation unit, and is turned on only during a period in which the operation unit is being pressed.
- the contact device 562 means a mechanical contact of an electromagnetic relay or a switch element of a semiconductor relay.
- a diode D ⁇ b> 16 that prevents backflow is inserted between the connection port 42 and the switch 561.
- the switch element 56 Since the switch element 56 is inserted in the electric path between the control power supply 14 and the in-vehicle battery 46 in order to supply electric power from the in-vehicle battery 46 to the control power supply 14, the switch element 56 is in-vehicle only when the switch element 56 is on. Power is supplied from the battery 46 to the control power supply 14. That is, during a period in which the contact device 562 is off, power is supplied from the in-vehicle battery 46 to the control power source 14 only in a period in which the switch 561 provided in the connector 30 is on. In other words, if the switch 561 is not operated, the power of the in-vehicle battery 46 is not consumed by the control power source 14, and the capacity reduction of the in-vehicle battery 46 is suppressed.
- the control power supply 14 is supplied with power from either the system power supply 41 or the conversion circuit 11. Further, at the time of a power failure in which the power from the system power supply 41 is stopped, the power of the storage battery 41 is supplied to the control power supply 14 through the intermediate bus of the conversion circuit 11. At this time, the electric power of the storage battery 41 is also supplied to the electric power system through the conversion circuit 11. Therefore, it is possible to operate the electric load connected to the power system using the power stored in the storage battery 41 at the time of a power failure. Such an operation is called self-sustained operation. Since the power system cannot be connected during the self-sustained operation, for example, power is output to a receptacle for self-sustained operation that is not connected to the power system.
- Self-sustained operation can be performed only when the connector 30 is connected to the connection port 42. Therefore, it is determined whether or not the self-sustained operation is performed in a state where it is recognized that the connector 30 is connected to the connection port 42 based on the output of the determination circuit 18.
- the in-vehicle battery 46 since it is necessary to supply power from the in-vehicle battery 46 to the control power source 14 only during the transition period, during the period in which the control power source 14 receives power from the system power source 41 or the conversion circuit 11, the in-vehicle battery It is desirable to stop power supply from 46 to the control power supply 14. Therefore, the momentary switch 561 is used as the switch element 56, and the vehicle-mounted battery 46 is wasted by operating the switch 561 only during the transition period and not operating the switch 561 after the conversion circuit 11 is operated. I try not to consume it. As described above, the contact device 562 is normally kept off.
- the switch 561 is a momentary type, even if the switch 561 is operated by mistake, the above-described communication establishment process, confirmation process, and the like are completed before the required time elapses. If the switch 561 returns to OFF, it does not shift to the independent operation. Therefore, only by providing the momentary switch 561, the shift to the independent operation due to an erroneous operation is avoided.
- the switch element 56 is off and the electric circuit between the control power supply 14 and the in-vehicle battery 46 is opened. Further, during the period in which both the power system and the conversion circuit 11 are not supplied with power to the control power supply 14, the switch element 56 is turned on, and the electrical path between the control power supply 14 and the in-vehicle battery 46 is conducted. .
- the contact device 71 as a power reception control unit is also inserted in the power supply path from the in-vehicle battery 46 to the control power source 14.
- the contact device 71 is turned off in order to prohibit the control power supply 14 from receiving power from the in-vehicle battery 46 during the period in which the control power supply 14 receives power from either the system power supply 41 or the conversion circuit 11.
- a relay having a normally closed contact is used as the contact device 71. After power failure of the system power supply 41, as described above, when the conversion circuit 11 is activated using the power of the in-vehicle battery 46 and power supply from the conversion circuit 11 to the control power supply 14 is started, the contact device 71 is controlled. In response to an instruction from the circuit 16, it is turned off.
- the contact device 71 When the contact device 71 performs the above-described operation, even if the switch 561 or the contact device 562 is on, the contact device 71 is turned off when power is supplied from the conversion circuit 11 to the control power supply 14. Therefore, the amount of power supplied from the in-vehicle battery 46 to the control power source 14 is limited, and the power consumption of the in-vehicle battery 46 is suppressed.
- the actuator 321 described above is connected between the switch element 56 and the control power supply 14 in the electric path between the control power supply 14 and the in-vehicle battery 46. That is, the electric circuit between the control power supply 14 and the in-vehicle battery 46 is used both as an electric circuit for supplying power from the in-vehicle battery 46 to the control power supply 14 and an electric circuit for supplying current to the actuator 321 from the control power supply 14.
- the switch element 56 is inserted between the in-vehicle battery 46 and the actuator 321.
- the path for supplying power from the in-vehicle battery 46 to the control power supply 14 overlaps with a part of the path for supplying power from the control power supply 14 to the actuator 321. Therefore, the voltage value output from the control power supply 14 to the electric circuit between the control power supply 14 and the in-vehicle battery 46 is set higher than the voltage value output from the in-vehicle battery 46 to the electric circuit between the control power supply 14 and the in-vehicle battery 46. Has been. As a result, the power supply from the control power supply 14 to the actuator 321 is prioritized over the power supply from the in-vehicle battery 46 to the control power supply 14.
- the processing unit 33 determines whether or not the contacts 431 and 432 of the switch 43 are in an open state, and turns on the contact device 562 in order to maintain energization of the actuator 321.
- the operation of the processing unit 33 in the present embodiment is the same as the configuration described in the second embodiment.
- the operation shown in FIG. 14 may be performed. That is, when the end of the independent operation is instructed, the processing unit 33 turns on the contact device 562 regardless of whether the switch 43 is in an open state or a closed state. Next, the power supply from the control power supply 14 to the switch 43 is stopped so that the switch 43 is opened (S11). Here, the processing unit 33 determines whether or not the contacts 431 and 432 of the switch 43 are welded (S12). When the contacts 431 and 432 are not welded (S12: N), the processing unit 33 turns off the contact device 562 (S13).
- the processing unit 33 maintains the contact device 562 on.
- FIG. 14 it is described that the welding of the contacts 431 and 432 of the switch 43 is determined, but it is only necessary to determine whether the switch 43 is open or closed.
- a path for transmitting a signal between the power conversion device 10 and the electric vehicle 40 is not particularly described, but a contact provided separately from the contacts 361 and 362 that perform charging and discharging.
- the signal may be transmitted using.
- the electric circuit for supplying power to the control power supply 39 which is the second control power supply for supplying power from the in-vehicle battery 46 to the processing unit 33 or the like
- a configuration shared by the signal line 23 may be employed. That is, a required signal may be superimposed on the voltage of this electric circuit, and this electric circuit may be used not only as power transmission / reception but also as a signal transmission line.
- a communication circuit 49 is provided in the electric vehicle 40 and a communication circuit 58 is provided in the connector 30 as shown in FIG.
- a signal can be directly transmitted from the electric vehicle 40 to the connector 30 instead of being transmitted from the electric vehicle 40 to the connector 30 through the power converter 10. Therefore, for example, when a switch is provided inside the connector 30, it is possible to quickly open the switch inside the connector 30 against an abnormality detected by the electric vehicle 40.
- the user operates the switch 561 at the time of a power failure of the system power supply 41 to shift to the independent operation.
- the power conversion device 10 is provided with a power failure detection circuit that detects a power failure of the system power supply 61, an operation of turning on the switch 561 after a predetermined time has elapsed since the detection of the power failure.
- the processing unit 33 may be operated to determine whether the switch 43 is in an open state when the system power supply 61 is restored.
- the power conversion system of the present embodiment described above includes the conversion circuit 11, the control circuit 16, the control power supply 14, and the connector 30.
- the conversion circuit 11 converts electric power from the first battery (storage battery 41) mounted on the device (electric vehicle 40) into electric power supplied to the electric power system (distribution panel 60).
- the control circuit 16 controls the operation of the conversion circuit 11.
- the control power supply 14 receives power from at least one of the power system (distribution panel 60) and the conversion circuit 11 and supplies power to the control circuit 16.
- the connector 30 is selectable between a mounting state and a non-mounting state with respect to a connection port 42 provided in the device (electric vehicle 40), and is connected between the first battery (storage battery 41) and the conversion circuit 11. Electrical paths 511 and 512 are formed. Furthermore, the connector 30 forms an auxiliary electric circuit 513 that causes the control power supply 14 to receive power from a second battery (on-vehicle battery 46) mounted on the device (electric vehicle 40).
- the conversion circuit 11 can operate even during a period until the control power supply 14 can receive power from the conversion circuit 11. That is, during this period, the control circuit 16 can operate without using a separate power source using only the second battery (the vehicle-mounted battery 46) mounted on the device (the electric vehicle 40).
- FIG. 13 shows only the main parts necessary for the description of the present embodiment, but other configurations are employed according to the first embodiment.
- the configuration of the above-described embodiment can be appropriately combined with the configuration of the present embodiment.
- the electric vehicle 40 is illustrated as an apparatus in this embodiment, the technique demonstrated by this embodiment is applicable even if it is not the electric vehicle 40 if it is an apparatus carrying the storage battery 41 or a fuel cell.
- the second battery that is not the main energy source needs to be mounted on the device instead of the in-vehicle battery 46.
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Abstract
Description
以下に説明する電力変換システムは、図1に示すように、電力変換装置10とコネクタ30とを備える。電力変換装置10は、交流と直流との間で双方向に電力変換を行う変換回路11を備える。電力変換装置10の筐体は、住宅の壁に取り付けられる壁掛け型、地面に設置される据え置き型などから選択される。変換回路11は、住宅に設置された分電盤60に電気的に接続され、ケーブル20を用いてコネクタ30と接続される。分電盤60は系統電源61に接続された主幹回路を複数系統の分岐回路に分岐させる。分岐回路には電気負荷62が電気的に接続される。
実施形態1では、第1の検出部331は、開閉器31の開状態と閉状態とを検出するために、開閉器31に主接点である接点311、312とは別に設けられた補助接点313を用いている。これに対して、本実施形態では、第1の検出部331が、補助接点313を用いることなく開閉器31の開状態と閉状態とを検出する構成例を説明する。以下、実施形態1と同様の構成については共通の符号を付して説明を省略する。
図4に示す本実施形態の構成において、コネクタ30に設けられた処理部33は、コネクタ30に内蔵した開閉器31の異常を検出するだけではなく、電動車両40に設けられた開閉器43の異常も検出するように構成される。処理部33は、開閉器31と挿入部304との間の2つの電路511、512にそれぞれ設定された計測点P1、P2の間の電圧値を監視し、この電圧値を用いて開閉器31および開閉器43の異常を検出するように構成されている。
実施形態3では、図4のように、コネクタ30の電路511、512に定めた計測点P1、P2の間の電圧値を計測することによって、コネクタ30に設けられた開閉器31または電動車両40に設けられた開閉器43に異常があるか否かを判断している。一方、コネクタ30の電路511、512または電動車両40の電路521、522によって生じる容量成分が存在していると、開閉器31あるいは開閉器43が開状態であっても、計測部333が計測する電圧値が閾値を超える可能性がある。本実施形態は、このような容量成分により生じる残留電荷を除去するために、図5のように、処理部33に放電部335を設けた構成例を説明する。本実施形態において、実施形態3と同様の構成については共通の符号を付して説明を省略する。
上述した各実施形態では、コネクタ30に設けられた開閉器31あるいは電動車両40に設けられた開閉器43において、異常があるか否かを判断する構成について説明した。本実施形態は、開閉器31、43のいずれかに異常が生じているときに、コネクタ30のボディ301(図2参照)を接続口42に対して装着状態に維持する構成について説明する。ボディ301が接続口42に対して装着状態であるときに、解除ボタン323を操作し、所定の条件が満足されると、ボディ301を接続口42に対して非装着状態とすることが可能である。
本実施形態のコネクタ30は、図8に示すように、第2給電部542に代えて、スイッチ回路55と第2給電部543とを備える点が実施形態5において説明したコネクタ30との構成と相違する。第2給電部542は、電路511、512から受電するが、第2給電部543は、補助電源としての車載バッテリ46から受電する。なお、実施形態5と同様の構成については、共通の符号を付して説明を省略する。
本実施形態のコネクタ30は、図10に示すように、図9に示した実施形態6の構成に対して、スイッチ回路55が省略され、電動車両40の車載バッテリ46と接触子423との間に補助スイッチ48が設けられた構成を備える。以下、実施形態6と同様の構成については、共通の符号を付して説明を省略する。
本実施形態のコネクタ30は、図11に示すように、図4に示した実施形態2の構成において、開閉機構32のアクチュエータ321の動作が電力変換装置10からの制御信号により制御される構成を備える。なお、実施形態2と同様の構成については、共通の符号を付して説明を省略する。
図13に示すように、本実施形態の電力変換装置10は、変換回路11と制御電源14と制御回路16とを備える。本実施形態において、実施形態1で説明した構成と同様の構成については共通の符号を付して説明を省略する。
Claims (25)
- 電力系統に接続された電力変換装置と、
電池を搭載した機器に設けられた接続口に対して装着状態と非装着状態とが選択可能であるコネクタと、
前記電池との電力の受け渡しが停止している期間に、前記コネクタと前記接続口とを電気的に接続する部位に電圧が印加されている状態を異常と判断するように構成された処理部とを備える
ことを特徴とする電力変換システム。 - 前記コネクタにおいて前記電力変換装置と前記電池との間の電路に挿入されており、前記電路を導通させる閉状態と前記電路を遮断する開状態とが選択される開閉器と、
前記コネクタにおいて前記コネクタが装着状態であるときに前記開閉器の前記閉状態を許可し、前記コネクタが前記非装着状態であるときに前記開閉器を前記開状態にする開閉機構と、
前記処理部は、
前記開閉器について前記開状態と前記閉状態とを検出する第1の検出部と、
前記コネクタについて前記装着状態と前記非装着状態とを検出する第2の検出部と、
前記第1の検出部が前記閉状態を検出し、かつ前記第2の検出部が前記非装着状態を検出している場合に異常と判断する判断部とを備える
請求項1記載の電力変換システム。 - 前記第1の検出部と前記第2の検出部とは前記コネクタに設けられている
請求項2記載の電力変換システム。 - 前記開閉器は、前記電路を開閉する主接点と、前記主接点に連動して開閉する補助接点とを備え、
前記第1の検出部は、前記補助接点の接点の状態を監視することにより前記開閉器が前記開状態か前記閉状態かを検出する
請求項2又は3記載の電力変換システム。 - 前記処理部は、
前記コネクタにおいて前記開閉器と前記電池との間の前記電路に定めた計測点で電圧値を計測する計測部と、
前記計測部が計測した前記電圧値を所定の閾値と比較する判断部とを備え、
前記判断部は、前記電池と前記接続口との間に設けられている第2の電路に挿入された第2の開閉器が前記第2の電路を遮断した状態で、前記計測部が計測した前記電圧値が前記閾値を超える場合に異常と判断する
請求項1記載の電力変換システム。 - 前記判断部は、前記電力変換装置から電力が出力されず、かつ前記第2の開閉器に前記第2の電路を遮断する開状態が指示されている状態で、前記計測部が計測した電圧値が前記閾値を超える場合に前記第2の開閉器の異常と判断する
請求項5記載の電力変換システム。 - 前記コネクタは、前記電力変換装置と前記電池との間の前記電路において、前記第2の開閉器と前記電力変換装置との間の容量成分により生じる残留電荷を放電する放電部を備える
請求項5~6のいずれか1項に記載の電力変換システム。 - 前記放電部は、前記計測部と兼用されている
請求項7に記載の電力変換システム。 - 前記処理部は前記コネクタに設けられており、
前記コネクタは、前記処理部による判断結果を表す2値の信号を前記電力変換装置に通知する通知部を備える
請求項3又は6記載の電力変換システム。 - 機器に搭載された第1の電池からの電力を電力系統に供給する電力に変換する変換回路と、
前記変換回路の動作を制御する制御回路と、
前記電力系統と前記変換回路との少なくとも一方から受電し前記制御回路に電力を供給する制御電源と、
前記機器に設けられた接続口に対して装着状態と非装着状態とが選択可能であって、前記第1の電池と前記変換回路との間の電路を形成するコネクタとを備え、
前記コネクタは、前記機器に搭載された第2の電池から前記制御電源に受電させる補助電路を形成する
ことを特徴とする電力変換システム。 - 前記電力系統と前記変換回路とのいずれかから前記制御電源が受電している期間には前記補助電路を開放し、前記電力系統および前記変換回路から前記制御電源への給電が停止している期間には前記補助電路を導通させるスイッチ要素をさらに備える
請求項10記載の電力変換システム。 - 前記コネクタは、前記接続口に対して装着状態であるときに通電され、前記接続口との装着状態を維持するアクチュエータを備え、
前記補助電路は、前記制御電源から前記アクチュエータに通電する電路と兼用され、
前記スイッチ要素は、前記第2の電池と前記アクチュエータとの間に挿入されている
請求項11記載の電力変換システム。 - 前記制御電源が前記補助電路に出力する電圧値は、前記第2の電池が前記補助電路に出力する電圧値よりも高く設定されている
請求項12記載の電力変換システム。 - 前記制御電源が前記電力系統と前記変換回路とのいずれかから受電している期間に、前記制御電源が前記第2の電池から受電することを禁止する受電制御部をさらに備える
請求項12又は13記載の電力変換システム。 - 前記スイッチ要素は、前記コネクタに付設されたモメンタリ型のスイッチである
請求項11~15のいずれか1項に記載の電力変換システム。 - 前記第1の電池と前記接続口との間に挿入される開閉器の溶着の有無を判断し、前記開閉器の溶着を検出した場合に前記スイッチ要素をオンに維持するように指示する処理部をさらに備える
請求項11~14のいずれか1項に記載の電力変換システム。 - 前記第2の電池から前記コネクタに設けられた第2の制御電源に電源を供給する電路は、信号の伝送路として兼用されている
請求項10~16のいずれか1項に記載の電力変換システム。 - 前記機器は、前記電池として蓄電池を搭載し、かつ前記蓄電池を走行用のエネルギー源に用いる電動車両である
請求項1~17のいずれか1項に記載の電力変換システム。 - 電池を搭載した機器に設けられた接続口に対して装着状態と非装着状態とが選択可能であるボディと、
アクチュエータを備えており、前記接続口に対して前記ボディが装着状態のときに、前記接続口からの前記ボディの取り外しを禁止するロック状態と前記接続口からの前記ボディの取り外しを許可するアンロック状態とを選択するように構成された開閉機構と、
電力系統に接続された電力変換装置から前記アクチュエータに電力を供給する第1給電部と、
前記電力変換装置と前記機器とのうち少なくとも前記機器から前記アクチュエータに電力を供給する第2給電部とを備え、
前記アクチュエータは、電力が供給されている期間に前記開閉機構を前記ロック状態とし、電力が供給されていない期間に前記開閉機構を前記アンロック状態とする
ことを特徴とするコネクタ。 - 前記第1給電部は、前記電力変換装置と前記電池との間の電路とは別経路で前記電力変換装置から受電し、
前記第2給電部は、前記電力変換装置と前記電池との間の電路から受電する
請求項19記載のコネクタ。 - 前記第1給電部および前記第2給電部と前記アクチュエータとの間に挿入されたスイッチ要素が設けられたスイッチ回路をさらに備え、
前記第1給電部は、前記電力変換装置と前記電池との間の電路とは別経路で前記電力変換装置から受電するように構成され、
前記第2給電部は、前記機器に設けられている補助電源から前記電路とは別経路で受電するように構成され、
前記スイッチ回路は、前記第1給電部が受電する電圧値と前記電路の電圧値との少なくとも一方が所定の閾値以上であるときに前記スイッチ要素をオンにする制御部を備える
請求項19記載のコネクタ。 - 前記第1給電部および前記第2給電部と前記アクチュエータとの間に挿入されたスイッチ要素が設けられたスイッチ回路をさらに備え、
前記第1給電部は、前記電力変換装置と前記電池との間の電路とは別経路で前記電力変換装置から受電するように構成され、
前記第2給電部は、前記機器に設けられている補助電源から前記電路とは別経路で受電するように構成され、
前記スイッチ要素は自己保持型であって、
前記スイッチ回路は、前記スイッチ要素を、前記第1給電部が受電する電圧値の立ち上がり時にオンにし、立ち下がり時にオフにするように構成され、
前記第1給電部は、前記電力変換装置から受電する部位と前記アクチュエータに給電する部位との間に逆流阻止用のダイオードを備える
請求項19記載のコネクタ。 - 前記第1給電部は、前記電力変換装置と前記電池との間の電路とは別経路で前記電力変換装置から受電して前記アクチュエータに給電するように構成され、
前記第2給電部は、前記機器に設けられている補助電源から前記電路とは別経路で受電して前記アクチュエータに給電するように構成されている
請求項20記載のコネクタ。 - 電池を搭載した機器に設けられた接続口に対して装着状態と非装着状態とが選択可能であるボディと、
パルス状の駆動電圧が加えられたときに動作するラッチング型のアクチュエータを備えており、前記接続口に対して前記ボディが装着状態のときに、前記接続口からの前記ボディの取り外しを禁止するロック状態と前記接続口からの前記ボディの取り外しを許可するアンロック状態とを選択するように構成された開閉機構と、
前記電池との電力の受け渡しが停止している期間に、前記コネクタと前記接続口とを電気的に接続する部位に電圧が印加されている状態を異常と判断するように構成された処理部と、
前記処理部が異常と判断した期間には、前記開閉機構をアンロック状態に移行させる前記駆動電圧が前記アクチュエータに与えられないように、前記駆動電圧を無効化する無効化回路とを備える
ことを特徴とするコネクタ。 - 前記機器は、前記電池として蓄電池を搭載し、かつ前記蓄電池を走行用のエネルギー源に用いる電動車両である
請求項19~24のいずれか1項に記載のコネクタ。
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