[go: up one dir, main page]

CN104578243A - A method for monitoring the DC voltage charge and a battery management system - Google Patents

A method for monitoring the DC voltage charge and a battery management system Download PDF

Info

Publication number
CN104578243A
CN104578243A CN201410569474.8A CN201410569474A CN104578243A CN 104578243 A CN104578243 A CN 104578243A CN 201410569474 A CN201410569474 A CN 201410569474A CN 104578243 A CN104578243 A CN 104578243A
Authority
CN
China
Prior art keywords
voltage
charging
input voltage
motor vehicle
management system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410569474.8A
Other languages
Chinese (zh)
Inventor
M·海茨曼
D·哈森科普
H·施特格米勒
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Samsung SDI Co Ltd
Original Assignee
Robert Bosch GmbH
Samsung SDI Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH, Samsung SDI Co Ltd filed Critical Robert Bosch GmbH
Publication of CN104578243A publication Critical patent/CN104578243A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • 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
    • 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
    • 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
    • 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
    • B60L53/305—Communication interfaces
    • 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
    • B60L53/66—Data transfer between charging stations and vehicles
    • B60L53/665—Methods related to measuring, billing or payment
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/18—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to reversal of direct current
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for DC systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
    • H02H3/243—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage for DC systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/50—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to the appearance of abnormal wave forms, e.g. AC in DC installations
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/18—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for batteries; for accumulators
    • 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
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/547—Voltage
    • 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
    • B60L2240/00—Control parameters of input or output; Target parameters
    • B60L2240/40—Drive Train control parameters
    • B60L2240/54—Drive Train control parameters related to batteries
    • B60L2240/549—Current
    • 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
    • H02J2310/00—The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40—The network being an on-board power network, i.e. within a vehicle
    • H02J2310/48—The network being an on-board power network, i.e. within a vehicle for electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • 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
    • 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
    • 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
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • 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
    • Y02T90/16—Information or communication technologies improving the operation of electric vehicles
    • Y02T90/167—Systems integrating technologies related to power network operation and communication or information technologies for supporting the interoperability of electric or hybrid vehicles, i.e. smartgrids as interface for battery charging of electric vehicles [EV] or hybrid vehicles [HEV]
    • 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
    • Y04S30/00—Systems supporting specific end-user applications in the sector of transportation
    • Y04S30/10—Systems supporting the interoperability of electric or hybrid vehicles
    • Y04S30/14—Details associated with the interoperability, e.g. vehicle recognition, authentication, identification or billing

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

本发明涉及一种用于监控机动车的储能器的直流电压充电的方法，该机动车包括储能器，储能器通过闭合在充电导线中设置的用于直流电压充电的快速充电接触器与充电站是电传导可连接的。该方法包括下面的方法步骤：测量施加于充电导线的输入电压。执行直流电压检验，其中，确定输入电压的电压大小和极性。当所确定的输入电压的电压大小位于预先确定的电压范围之内并且输入电压的极性对应于预先确定的极性时，闭合快速充电接触器。当所确定的输入电压的电压大小不位于预先确定的电压范围之内或者输入电压的极性不对应于预先确定的极性时，断开快速充电接触器。本发明还涉及一种蓄电池管理系统，其被构造用于执行根据本发明的方法。

The invention relates to a method for monitoring the DC voltage charging of an energy store of a motor vehicle comprising an energy store by closing a fast charging contactor arranged in a charging line for DC voltage charging It is electrically conductively connectable to the charging station. The method comprises the following method steps: Measuring an input voltage applied to a charging line. A DC voltage verification is performed in which the voltage magnitude and polarity of the input voltage is determined. When the determined voltage magnitude of the input voltage is within a predetermined voltage range and the polarity of the input voltage corresponds to the predetermined polarity, the fast charging contactor is closed. When the determined voltage magnitude of the input voltage is not within the predetermined voltage range or the polarity of the input voltage does not correspond to the predetermined polarity, the quick charging contactor is disconnected. The invention also relates to a battery management system which is designed to carry out the method according to the invention.

Description

For monitoring method and the battery management system of direct voltage charging
Technical field
The present invention relates to a kind of method of direct voltage charging of the accumulator for monitoring equipment motor-car, this motor vehicle comprises the accumulator of motor vehicle, this accumulator by close at arrange in charging conductor for direct voltage charging quick charge contactor and charging station be that conductivity is attachable.In addition the present invention relates to a kind of battery management system, it is configured to perform according to method of the present invention.
Background technology
Electrically driven (operated) motor vehicle makes the accumulator of electricity consumption as energy source.This accumulator must periodically charge again after a procedure.In order to often there is such device on the motor vehicle side that this object is being positioned at prior art, it can receive the connection to charging station, and this makes the charging of accumulator become possibility.Mostly have the form of socket at this device that motor vehicle is other, be applicable to plug wherein, this plug is connected with charging station.The accumulator of the electricity of electrically driven (operated) motor vehicle is always charged by direct voltage, but most charging station can provide direct voltage and the alternating voltage of varying level, and this is respectively according to the design of charging station.
At almost each charging station place, be possible by the charging of 230V alternating voltage, it only carries out lentamente due to the power delivery only limited.In addition, also can be charged by the alternating voltage of 380V at some charging stations, there is provided herein obviously more power, this significantly reduces the charging interval.There is charging station in addition, it directly provides the direct voltage needed for charging of the energy driving device for electrically driven (operated) motor vehicle of such as 400V, and it then can be supplied to accumulator through conversion.
In the prior art, all voltage recited above, that provided by charging station supplies in one with identical plug.Therefore, the identical pin of this plug can not only induced AC voltage but also Traditional DC voltage, thus this can occur, and namely alternating voltage is provided to the accumulator of electricity.This can cause again the damage of accumulator.This can be due to the mistake such as in the electronic installation of charging station.
Summary of the invention
According to the method that the direct voltage that the present invention proposes a kind of accumulator for monitoring equipment motor-car charges, this motor vehicle comprises the accumulator of motor vehicle, this accumulator by close at arrange in charging conductor for direct voltage charging quick charge contactor and charging station be that conductivity is attachable.The method comprises method step below: measure the input voltage putting on charging conductor.Execution direct voltage is checked, and wherein, determines voltage swing and the polarity of input voltage.When the voltage swing of determined input voltage to be positioned within predetermined voltage range and the polarity of input voltage corresponds to predetermined polarity chron, closed quick charge contactor.When the voltage swing of determined input voltage is not positioned within predetermined voltage range or the polarity of input voltage does not correspond to predetermined polarity chron, disconnect quick charge contactor.
Ensured by the method, when the charging accumulator of the motor vehicle at charging station place, it is possible for not having alternating voltage to be applied to this motor vehicle, and this protection accumulator is not by the possible damage by applying with the voltage of mistake.The charging conductor of the electricity between charging station and the accumulator of electricity can be interrupted, as long as the input voltage provided by charging station departs from the charging required voltage for accumulator according to method of the present invention.
Preferably, in the step performing direct voltage inspection, realize the digitlization of determined input voltage.By the digitlization of input voltage, the identical reliable inspection in the scope of direct voltage inspection is simply possible.No matter be the digitlization of input voltage or identical inspection, can both such as realize by means of digital circuit or by means of digital signal processor or by means of the gate circuit of logic.
Preferably, in the step performing direct voltage inspection, whether the input voltage of check digit exists the zero crossing (Nulldurchgang) of described input voltage.The existence of the alternating voltage of zero crossing instruction at charging conductor place.
Preferably, disconnect quick charge contactor when there is the zero crossing of input voltage and interrupt accumulator direct voltage charging.In this form of implementation, method according to the present invention makes the interruption very fast of the charging of accumulator become possibility, and therefore reliably forbids the possible damage of accumulator.
In one preferred embodiment, the method comprises the size of electric current and the step of flow direction that obtain and flow through in charging conductor further.In this form of implementation, method according to the present invention makes to identify that the under-voltage existence of the charging that puts on accumulator becomes possibility, also can be identified in the existence of the mistake in charging station, its mistake due to voltage is provided, this voltage is less than the voltage of accumulator, and this can cause electric current to commutate and the electric discharge of therefore accumulator.
Preferably, as long as determine the commutation of the flow direction of the electric current flow through in charging conductor, then the method comprises the step of the direct voltage charging disconnecting quick charge contactor and interrupt accumulator further.In this enforcement of the method, prevent the same less desirable electric discharge under-voltage based on the charging existed of the accumulator of motor vehicle.
In addition provide a kind of battery management system, it is configured to, and implements the method for the direct voltage charging of the accumulator being used for monitoring equipment motor-car.Therefore can such as be implemented by battery management system according to method of the present invention, this battery management system in most of the cases all exists in electrically driven (operated) motor vehicle.
Preferably, battery management system comprises transducer further, and this transducer is configured to, and obtains size and the flow direction of the electric current flow through in charging conductor.This transducer is structurally relatively simple, with low cost and embeddable neatly.
In a preferred form of implementation, battery management system comprises at least one voltage probe further, and this at least one voltage probe is configured to, and measures the voltage swing and the polarity that put on the charging voltage of charging conductor.By this voltage probe, input voltage is measurable simply.
Preferably, this battery management system is configured to, as long as the voltage swing of input voltage is not arranged within predetermined voltage range or the polarity of input voltage does not correspond to predetermined polarity or determine the commutation of flow direction of the electric current flow through at charging conductor, then generate the information existed about mistake.Then this error reporting can be such as displayable for the user of motor vehicle, and the accumulator of this motor vehicle is connected with charging station.
In addition, a kind of motor vehicle had according to battery management system of the present invention is provided.
Preferred improvement of the present invention provides in the dependent claims and illustrates in the description.
Accompanying drawing explanation
Explanation with reference to the accompanying drawings and is below set forth embodiments of the invention further, wherein:
Fig. 1 shows the flow chart of the embodiment according to method of the present invention; And
Fig. 2 shows the embodiment according to the battery management system under the state being connected with the charging wiring of motor vehicle of the present invention.
Embodiment
Figure 1 illustrates the flow chart of the embodiment of the method for charging according to the direct voltage of the accumulator for monitoring equipment motor-car of the present invention.The method comprises the accumulator of motor vehicle, its by close at arrange in charging conductor for direct voltage charging quick charge contactor and charging station be that conductivity is attachable.In other words, the method comprises the accumulator of motor vehicle, it is connected with charging station by charging conductor, wherein quick charge contactor is set in charging conductor, can be cut off by this quick charge contactor charging conductor, namely make the charging of accumulator become the charging and may can interrupting accumulator.The input voltage putting on charging conductor is measured in the first method step S1 of the method.In other words, measure in the first method step S1 or obtain the input voltage that provided by charging station, the accumulator of motor vehicle is that conductivity is connected with this charging station by charging conductor and quick charge contactor.In the second method step S2, implement direct voltage inspection, wherein determine voltage swing and the polarity of input voltage.Also determine in the second method step, be positioned at charging conductor place and the input voltage provided by charging station has much, or input voltage has any symbol.
In third method step, when the determined voltage swing of input voltage is positioned at the polarity of predetermined voltage range and input voltage corresponding to predetermined polarity chron, closed quick charge contactor.In other words, in the third method step S3 of the embodiment of method according to the present invention, as long as the size of input voltage is higher than lower voltage border and lower than flanging circle that powers on, and input voltage has predetermined symbol, the polarity of this symbol also corresponds to predetermined polarity, then the charging of the accumulator of motor vehicle is possible.In the 4th method step S4 of the method, as long as the polarity that the voltage swing of determined input voltage is not positioned at predetermined voltage range or input voltage does not correspond to predetermined polarity, then disconnect quick charge contactor.In other words, in the 4th method step S4 of the embodiment of method according to the present invention, as long as the size of input voltage is lower than lower voltage border or higher than flanging circle that powers on, or input voltage has the symbol different from predetermined symbol, the polarity of this symbol does not correspond to predetermined polarity yet, then the charging of the accumulator of motor vehicle is interrupted by disconnecting quick charge contactor.
In this embodiment, the pure digitlization exemplarily realizing the input voltage obtained in the second method step S2 performing direct voltage inspection.In other words, the input voltage of simulation or the input voltage curve of simulation be converted in this embodiment numeral, corresponding to the numerical value of instantaneous analog input voltage value.Be verified in the scope that the value of this numeral is checked at the direct voltage of the method subsequently.
In the embodiment of the method, in the step performing direct voltage inspection, whether the input voltage of check digit exists the zero crossing of this input voltage.Change the numerical value of the numeral of the input voltage corresponding to simulation, such as its symbol, will cause the zero crossing in input voltage, and this can infer the existence of the alternating voltage as input voltage at charging conductor place.In this case, this represent when when correspond to simulation input voltage numeral value in the inspection of affirmative of existence of this zero crossing, disconnect quick charge contactor in the embodiment in accordance with the invention and cut off the DC charging of accumulator.In the method for this embodiment, exemplary also comprising obtains the size of electric current that flows through in charging conductor of S5 and the step of flow direction purely.In other words, in the embodiment of the method, obtain S5, the direction that the electric current flowing through charging conductor has much and this electric current to flow through.This represents, whether electric current flows into accumulator or flow out from accumulator.
In addition, according to method of the present invention in this embodiment, as long as determine the commutation of the electric current flow through in charging conductor, then the interruption S6 of the step of the disconnection of quick charge contactor and the direct voltage charging of accumulator is also comprised.Electric current commutation in charging conductor can be derived in the charging putting on charging conductor under-voltage and therefore derive input voltage too small the charging for accumulator.This points out again the mistake in charging station, disconnects quick charge contactor and interrupt the charging of accumulator in this embodiment therefore in the scope of method according to the present invention as the reaction commutated to electric current.
Continue in this embodiment and implement concurrently to measure S1 put on charging conductor input voltage, perform direct voltage inspection S2 and obtain the size of electric current and flow direction that S5 flows through in charging conductor.But also can implement according to method of the present invention, it also comprises other method step, and multiple method step performs with other order in the method.
The embodiment according to battery management system 50 of the present invention under the state be connected with the charging wiring 66 of motor vehicle 100 in fig. 2.In other words, figure 2 illustrates the battery management system 50 of structure in motor vehicle 100, it is for implementing according to method of the present invention.But can implement according to battery management system 50 of the present invention, it is not configured in motor vehicle 100 yet.In the embodiment of this battery management system 50, it is exemplarily configured to perform the embodiment according to describing before method of the present invention purely.Motor vehicle 100 self represents only by rectangle in fig. 2.Accumulator 80 is connected with the drive system of motor vehicle 100 (not shown) shown in figure 2.Two poles of accumulator 80 are connected with charging conductor 10 respectively, arrange contactor 5 and fuse 7 wherein respectively.Through or charging by alternating voltage 13 to be realized by rectifier that is unshowned, structure in motor vehicle 100 in fig. 2 and independently going between, it is only simple in fig. 2 illustrates.
In order to direct voltage charging, namely in order to the charging by direct voltage, two charging conductors 10 are attachable by respective link 51 and charging station 130 (not shown).In this embodiment, two charging conductors 10 are connected with unshowned charging station 130 in fig. 2 by its link 51, and this is by representing at two arrows at the rectangle place representing motor vehicle 100.In charging conductor 10, arrange quick charge contactor 20, it can interrupt two charging conductors 10 not only electricly but also mechanically.The disconnection of contactor 5 and quick charge contactor 20 and closed be possible by battery management system 50, it had not only exemplarily been connected to conductivity with contactor 5 but also with quick charge contactor 20 in this embodiment purely.
In this embodiment, battery management system 50 exemplarily comprises transducer 1 purely, and it is connected with charging conductor 10 and is configured to, and obtains size and the flow direction of the electric current flow through in charging conductor 10.In this embodiment, the transducer 1 purely exemplarily between contactor 5 and the fuse 7 arranged in same charging conductor 10 is connected with charging conductor 10.This transducer 1 but also can be connected with charging conductor 10 in other position.In addition, can also realize according to battery management system 50 of the present invention, wherein, the transducer 1 for the size with flow direction that obtain the electric current flow through in charging conductor 10 can be set up with charging conductor 10 to non-physical and contact.
In addition, battery management system in this embodiment exemplarily has two voltage probes 2 purely, its quick charge contactor 20 and for charging conductor 10 is connected to charging station 130 link 51 between with charging conductor 10 be respectively conductivity be connected.By voltage probe 2, battery management system 50 can be measured or obtain voltage swing and put on the polarity of charging voltage of charging conductor 10.In this embodiment, battery management system 50 is configured to, as long as detect charging voltage by voltage probe 2 at charging conductor 2 place, this charging voltage has voltage swing, it is not positioned within predetermined voltage range or has polarity, this polarity does not correspond to predetermined polarity, then not only disconnect quick charge contactor 20 but also disconnect contactor 5.In addition, battery management system 50 in this embodiment is only exemplarily configured to, as long as detected the electric current flow through in charging conductor 10 by transducer 1, the size of this electric current is not positioned within predetermined voltage range or the flow direction of this electric current does not correspond to predetermined flow direction, then not only disconnect quick charge contactor 20 but also disconnect contactor 5.
In addition, battery management system 50 in this embodiment is exemplarily configured to purely, implement to check the charging voltage of the input voltage putting on charging conductor 10 under the spirit of method according to the present invention, the input voltage for this reason in battery management system is digitized.Whether the digitized value of further this input voltage of inspection exists zero crossing, and is carried out the disconnection of triggering contactors 5 and quick charge contactor 20 by battery management system 50 in the case of necessary.
In addition, battery management system 50 is in this embodiment configured to, information generated is carried out, as long as the voltage swing of input voltage is not arranged within predetermined voltage range or the polarity of input voltage does not correspond to predetermined polarity or determine the commutation of flow direction of the electric current flow through at charging conductor 10 by the existence of mistake.In other words, battery management system 50 is in this embodiment configured to, and when contactor 5 and quick charge contactor 20 are triggered by battery management system 50, generation error is reported.

Claims (11)

1.一种用于监控机动车(100)的储能器(80)的直流电压充电的方法，所述机动车包括：1. A method for monitoring the DC voltage charging of an energy store (80) of a motor vehicle (100), said motor vehicle comprising: -机动车(100)的储能器(80)，所述储能器通过闭合设置在充电导线(10)中的用于直流电压充电的快速充电接触器(20)与充电站(130)是电传导可连接的，其中，所述方法包括下面的方法步骤：- the energy store (80) of the motor vehicle (100), which is connected to the charging station (130) by closing the fast charging contactor (20) arranged in the charging line (10) for direct voltage charging Electrically conductive connectable, wherein the method comprises the following method steps: -测量(S1)施加于所述充电导线(10)的输入电压；- measuring (S1) the input voltage applied to said charging lead (10); -执行直流电压检验(S2)，其中，确定所述输入电压的电压大小和极性；- performing a DC voltage check (S2), wherein the voltage magnitude and polarity of said input voltage is determined; -当所确定的所述输入电压的所述电压大小位于预先确定的电压范围之内并且所述输入电压的所述极性对应于预先确定的极性时，闭合(S3)所述快速充电接触器(20)；- closing (S3) said fast charging contactor when said determined voltage magnitude of said input voltage is within a predetermined voltage range and said polarity of said input voltage corresponds to a predetermined polarity (20); -当所确定的所述输入电压的所述电压大小不位于预先确定的电压范围之内或者所述输入电压的所述极性不对应于预先确定的极性时，断开(S4)所述快速充电接触器(20)。- disconnecting (S4) the fast Charging contactor (20). 2.根据权利要求1所述的用于监控机动车(100)的储能器(80)的直流电压充电的方法，其中，在执行直流电压检验(S2)的步骤中实现所确定的输入电压的数字化。2. The method for monitoring the DC voltage charging of an energy store (80) of a motor vehicle (100) according to claim 1, wherein the determined input voltage is achieved in the step of performing a DC voltage check (S2) digitization. 3.根据权利要求2所述的用于监控机动车(100)的储能器(80)的直流电压充电的方法，其中，在执行直流电压检验(S2)的步骤中检验经数字化的所述输入电压是否存在所述输入电压的过零点。3. The method for monitoring the DC voltage charging of an energy store (80) of a motor vehicle (100) according to claim 2, wherein the digitized Whether the input voltage has a zero-crossing point of the input voltage. 4.根据权利要求3所述的用于监控机动车(100)的储能器(80)的直流电压充电的方法，其中，在存在所述输入电压的过零点的情况下断开所述快速充电接触器(20)并且中断所述储能器(80)的所述直流电压充电。4. The method for monitoring the DC voltage charging of an energy store (80) of a motor vehicle (100) according to claim 3, wherein the fast charging contactor (20) and interrupting the DC voltage charging of the energy storage (80). 5.根据前述权利要求中任一项所述的用于监控机动车(100)的储能器(80)的直流电压充电的方法，其中，所述方法进一步包括获取(S5)在所述充电导线(10)中流过的电流的大小和流动方向的步骤。5. The method for monitoring DC voltage charging of an energy store (80) of a motor vehicle (100) according to any one of the preceding claims, wherein said method further comprises acquiring (S5) The steps of the magnitude and flow direction of the current flowing in the wire (10). 6.根据权利要求5所述的用于监控机动车(100)的储能器(80)的直流电压充电的方法，只要确定在所述充电导线(10)中流过的所述电流的所述流动方向的换向，则所述方法进一步包括断开所述快速充电接触器(20)和中断(S6)所述储能器(80)的所述直流电压充电的步骤。6. The method for monitoring the DC voltage charging of an energy store (80) of a motor vehicle (100) according to claim 5, as long as the flow direction, the method further comprises the steps of opening said fast charging contactor (20) and interrupting (S6) said DC voltage charging of said accumulator (80). 7.一种蓄电池管理系统(50)，其被构造用于，实施根据权利要求1至6中任一项所述的用于监控机动车(100)的储能器(80)的直流电压充电的方法。7. A battery management system (50) designed to carry out the DC voltage charging of an energy store (80) for monitoring a motor vehicle (100) according to any one of claims 1 to 6 Methods. 8.根据权利要求7所述的蓄电池管理系统(50)，其进一步包括传感器(1)，所述传感器被构造用于获取在所述充电导线(10)中流过的电流的大小和流动方向。8 . The battery management system ( 50 ) according to claim 7 , further comprising a sensor ( 1 ), which is designed to detect the magnitude and flow direction of the current flowing in the charging line ( 10 ). 9.根据权利要求7或8所述的蓄电池管理系统(50)，其进一步包括至少一个电压探针(2)，所述至少一个电压探针被构造用于测量施加于所述充电导线(10)的所述充电电压的电压大小和极性。9. The battery management system (50) according to claim 7 or 8, further comprising at least one voltage probe (2) configured to measure ) of the voltage magnitude and polarity of the charging voltage. 10.根据权利要求7至9中任一项所述的蓄电池管理系统(50)，其中，所述蓄电池管理系统(50)被构造用于，只要所述输入电压的所述电压大小不位于预先确定的电压范围之内或者所述输入电压的所述极性不对应于预先确定的极性或者确定在所述充电导线(10)中流过的所述电流的所述流动方向的换向，则生成关于错误存在的信息。10. The battery management system (50) according to any one of claims 7 to 9, wherein the battery management system (50) is designed to provide that the voltage magnitude of the input voltage is not at a preset within a defined voltage range or if said polarity of said input voltage does not correspond to a predetermined polarity or to determine the reversal of said flow direction of said current flowing in said charging conductor (10), then Generate information about the existence of errors. 11.一种机动车(100)，其具有根据权利要求7至10中任一项所述的蓄电池管理系统(50)。11. Motor vehicle (100) having a battery management system (50) according to any one of claims 7 to 10.
CN201410569474.8A 2013-10-24 2014-10-22 A method for monitoring the DC voltage charge and a battery management system Pending CN104578243A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201310221590 DE102013221590A1 (en) 2013-10-24 2013-10-24 Method for monitoring the DC voltage charge of the energy storage of a motor vehicle and a battery management system
DE102013221590.8 2013-10-24

Publications (1)

Publication Number Publication Date
CN104578243A true CN104578243A (en) 2015-04-29

Family

ID=52811562

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201410569474.8A Pending CN104578243A (en) 2013-10-24 2014-10-22 A method for monitoring the DC voltage charge and a battery management system

Country Status (2)

Country Link
CN (1) CN104578243A (en)
DE (1) DE102013221590A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026258A (en) * 2016-06-24 2016-10-12 青岛海信移动通信技术股份有限公司 Mobile terminal
CN114506243A (en) * 2022-01-26 2022-05-17 北京海博思创科技股份有限公司 Power control method of vehicle-mounted battery system and vehicle-mounted battery management device
CN114801877A (en) * 2022-06-23 2022-07-29 深圳市菲尼基科技有限公司 Monitoring system of electric vehicle power battery pack and electric vehicle

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017121441A1 (en) 2017-09-15 2019-03-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Protection circuit for a charging device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3771812D1 (en) * 1986-09-11 1991-09-05 Siemens Ag POLE PROTECTION AND AC VOLTAGE PROTECTION FOR DC-OPERATED ELECTRICAL CONSUMERS.
DE102010020295A1 (en) * 2010-05-12 2011-11-17 Continental Automotive Gmbh Circuit arrangement for protecting e.g. lithium ion battery in motor car, has converter circuitry with output that exhibits voltage difference with preset sign in relation to terminal such that separation circuit is supplied with power
DE102012203072A1 (en) * 2012-02-29 2013-08-29 Zf Friedrichshafen Ag Device and method for securing a circuit for a vehicle and circuit

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106026258A (en) * 2016-06-24 2016-10-12 青岛海信移动通信技术股份有限公司 Mobile terminal
CN106026258B (en) * 2016-06-24 2018-12-28 青岛海信移动通信技术股份有限公司 A kind of mobile terminal
CN114506243A (en) * 2022-01-26 2022-05-17 北京海博思创科技股份有限公司 Power control method of vehicle-mounted battery system and vehicle-mounted battery management device
CN114506243B (en) * 2022-01-26 2024-01-23 北京海博思创科技股份有限公司 Power control method for vehicle-mounted battery system and vehicle-mounted battery management device
CN114801877A (en) * 2022-06-23 2022-07-29 深圳市菲尼基科技有限公司 Monitoring system of electric vehicle power battery pack and electric vehicle

Also Published As

Publication number Publication date
DE102013221590A1 (en) 2015-04-30

Similar Documents

Publication Publication Date Title
JP5369833B2 (en) Electric vehicle charger and ground fault detection method
US10640000B2 (en) Method and device for detecting a direct-current fault current
CN104641244B (en) For detecting and measuring the device of insulation fault
JP5920469B2 (en) Power supply
CN105137336A (en) Diagnostic circuit and diagnostic method for detecting electric vehicle high-voltage relay fault
CN104756393B (en) Power conversion device and its method for diagnosing faults
US20180302030A1 (en) Inverter having grid disconnection point and insulation resistance measurement and method for measuring an insulation resistance
CN103604998A (en) Method for measuring electric conduction loop resistance of circuit breaker
CN103858297A (en) Power charging device for electric vehicle
CA2568147C (en) Device for automatic detection of battery polarity
CN110596529B (en) Earth insulation fault detection device and system for flexible DC power grid
CN104578243A (en) A method for monitoring the DC voltage charge and a battery management system
US20200130521A1 (en) Power conversion cable apparatus
JP5104520B2 (en) Electric vehicle charging device
CN105034841A (en) Strong electricity charging and discharging control method of hybrid electric vehicle and apparatus thereof
CN103180160B (en) Device and method for estimating touch currents and protecting electrical installations from such touch currents
CN201589815U (en) Resistance test device
EP2487496A1 (en) Method for isolation measurements using pre-charge and discharge circuitry
CN206685314U (en) A kind of relay with load faulty detection function
CN201707417U (en) Cable on-off detector
CN109968980A (en) A high-voltage interlock detection system
CN108051699A (en) A kind of secondary loop of mutual inductor of transformer substation exception live detection method and system
JP2010239837A (en) Line-to-ground fault detector, charger for electric vehicles, and method of detecting line-to-ground fault
CN202145564U (en) Battery major loop interface protection circuit
US20220014015A1 (en) Abnormality detecting system for a solar power grid

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20150429