JP2023168963A - Charging/discharging device, charging/discharging control method, and computer program - Google Patents

Abstract

To provide a charging/discharging device, a charging/discharging control method, and a computer program, capable of variously setting a control how the charging/discharging device operates on signals from the outside.SOLUTION: A charging/discharging device is connected to a storage battery provided on a vehicle and includes a control unit controlling charging/discharging between the storage battery and a power supply or a load. The charging/discharging device includes an external signal accepting section for accepting one or more signals from the outside of the charging/discharging device. The control unit accepts, for each of operation conditions including during charging, discharging and independent power supply, the setting of contents of operation including the standby and stop of the charging/discharging device, when one or more signals accepted at the external signal accepting section are detected in an on state, by the one or more signals, stores the setting of the contents of operation having been accepted, for each of the operation conditions and by the one or more signals, and when one or more signals accepted at the external signal accepting section are detected in an on state, allows the charging/discharging device to operate according to a stored setting.SELECTED DRAWING: Figure 2

Description

The present invention relates to a charging/discharging device, a charging/discharging control method, and a computer program for controlling charging/discharging of a storage battery installed in a vehicle.

The storage battery installed in an electric vehicle has a relatively large capacity. Techniques have been proposed to realize V2H (Vehicle to Home), which enables the power stored in these vehicles to be supplied to, for example, household loads in addition to driving electric vehicles. Technologies to realize V2X have been proposed, including not only V2H but also V2B (vehicle to building), which enables power supply to larger buildings, and V2G (vehicle to grid), which enables power supply to the power grid. There is. With these technologies, it is expected that even in the event of a power outage due to a disaster, it will be possible to supply electric power stored in mobile electric vehicles to maintain daily life and keep factories operating.

Achieving V2X requires a charging/discharging cable that is connected to the storage battery of the vehicle, and is capable of controlling charging/discharging in the vehicle and adjusting the power supply from the power grid. Equipment will need to be deployed. Patent Document 1 discloses a charging/discharging device that is capable of self-sustaining operation even during a power outage.

Patent No. 6045450

A charging/discharging device can safely stop operation once the power grid that supplies the power is out of power or detects reverse power, or if a ground fault is detected. The system is set to carry out predetermined control depending on the situation in response to an external stop signal.

It is preferable that the predetermined control by the charging/discharging device can be set in a variety of ways depending on the usage environment and its purpose.

The present invention has been made in view of the above circumstances, and provides a charging/discharging device, a charging/discharging control method, and a computer program that allow various settings for controlling how the device operates in response to external signals. The purpose is to provide

A charging and discharging device according to an embodiment of the present disclosure is a charging and discharging device that is connected to a storage battery provided in a vehicle and includes a control unit that controls charging and discharging between the storage battery and a power source or a load, the charging and discharging device comprising: The charging/discharging device includes an external signal reception unit that receives one or more signals from equipment other than equipment mounted on the vehicle, and the control unit controls whether the one or more signals received by the external signal reception unit are turned on. Settings for operation contents including standby and stop of the charging/discharging device when detected are accepted for each of the one or more signals and for each operating condition including charging, discharging, and self-sustaining power supply, and the accepted operation Content settings are stored for each of the one or more signals and for each driving situation, and when the one or more signals accepted by the external signal reception section are detected to be on, the device operates according to the stored settings. .

A charging and discharging control method according to an embodiment of the present disclosure is a method for controlling a charging and discharging device that is connected to a storage battery provided in a vehicle and controls charging and discharging between the storage battery and a power source or a load, the method comprising: The charging and discharging device includes an external signal reception unit that receives one or more signals from equipment other than equipment mounted on the vehicle, and the control unit of the charging and discharging device includes an external signal reception unit that receives one or more signals from devices other than equipment mounted on the vehicle. Set the operation contents including standby and stop of the charging/discharging device when one or more signals to be accepted are detected to be on, including charging, discharging, and self-sustaining power supply for each of the one or more signals. The settings of the received operation contents are accepted for each driving situation and are stored for each driving situation for each of the one or more signals, and when the external signal reception unit detects that the one or more signals accepted are turned on. , operate according to the memorized settings.

A computer program according to an embodiment of the present disclosure is installed in a computer installed in a charging/discharging device that is connected to a storage battery installed in a vehicle and controls charging and discharging between the storage battery and a power source or a load. Setting of operation contents including standby and stop of the charging/discharging device when one or more signals received by an external signal receiving unit that receives one or more signals from devices other than devices that are connected to the device is detected to be turned on, Accepting each of the one or more signals for each driving situation including charging, discharging, and self-sustaining power supply, and storing the settings of the accepted operation details for each of the one or more signals and each driving situation, When it is detected that one or more signals received by the external signal reception unit are turned on, a process is executed to control the operation according to the stored settings.

In the charging/discharging device, the charging/discharging control method, and the computer program of the present disclosure, it is possible to set the operation content according to the external stop signal for each driving situation. The control unit of the charging/discharging device controls the charging/discharging device to operate according to the settings. It is possible to set the device to stop operation only when it is being charged, and to standby when it is discharging (supplying power) or when it is supplying independent power without being connected to an external power grid.

Here, the external stop signal refers to a signal from a device that detects the situation in the environment in which the charging/discharging device is installed, excluding in-vehicle devices. Further, the external stop signal may exclude a communication signal obtained via a public communication network. The device refers to a device such as a protective relay or a sensor that detects a situation in which the charging/discharging device should be temporarily stopped or placed on standby.

The contract status, usage frequency, etc. of the electricity used by the charging/discharging device differ depending on the environment in which the charging/discharging device is installed, so regardless of the situation, there is no choice between stopping at the signal or waiting. , there will be cases where it does not meet your needs. On the other hand, by enabling various settings for each situation depending on the environment, charging and discharging of the charging/discharging device can be appropriately managed, and as a result, it is expected that power usage efficiency will be improved.

In the charging/discharging device according to an embodiment of the present disclosure, the control unit accepts a selection of not doing anything in addition to standby and stop as the control content settings.

In the charging/discharging device of the present disclosure, it is possible not only to stop operation or standby (return later), but also to do nothing. Since it is a charging/discharging device capable of both charging and discharging (power supply), it can be used in a variety of ways, unlike power conditioners and the like, which assume only two situations: whether power is being generated or not. For example, even if a stop signal from the outside is detected, there may be a situation where no reaction is made and the current operation may continue. Since it is possible to select not to do anything, it is possible to cause the charging/discharging device to perform an appropriate operation for each driving situation depending on the external signal.

In the charging/discharging device according to an embodiment of the present disclosure, the external signal receiving section receives a plurality of external stop signals output from the relay.

The charging/discharging device of the present disclosure may be configured to receive a plurality of signals from the relay, such as an RPR signal outputted from the relay and an OVGR signal, as external signals, and perform different operations for each signal.

In the charging/discharging device according to an embodiment of the present disclosure, the external signal receiving section receives a contact output signal.

The charging/discharging device of the present disclosure may receive a contact output signal output from another device when an abnormality is detected. Contact output signals may be combined with signals from other relays.

In the charging/discharging device according to an embodiment of the present disclosure, the external signal receiving section receives an output from an external switch.

In the charging/discharging device of the present disclosure, output from a switch separately provided by an administrator or the like may be accepted. It may be combined with settings for signals from other relays or contact output signals. This allows various control settings to be made depending on the usage environment, purpose of use, etc. of the charging/discharging device.

According to the present disclosure, it is possible to variously set the operation of the charging/discharging device in response to signals from the outside.

FIG. 1 is a schematic diagram of a charging/discharging system including a charging/discharging device. FIG. 2 is a block diagram showing a connection configuration of a charging/discharging device and a vehicle. 7 is a flowchart illustrating an example of a setting acceptance procedure in the first embodiment. FIG. 6 is a diagram illustrating an example of the contents of a setting reception screen. FIG. 3 is an explanatory diagram of an example of setting contents stored in a memory. FIG. 7 is an explanatory diagram of setting contents in a second example. FIG. 7 is an explanatory diagram of setting contents in a third example. FIG. 3 is a diagram illustrating an example of setting priorities. FIG. 3 is a diagram showing priorities for each operation content. 12 is a flowchart illustrating an example of a setting acceptance procedure in the second embodiment. FIG. 7 is a diagram illustrating an example of the contents of a setting reception screen according to the second embodiment. FIG. 7 is an explanatory diagram of an example of setting contents stored in a memory in the second embodiment. FIG. 7 is an explanatory diagram of another example of setting contents stored in the memory in the second embodiment. FIG. 7 is an explanatory diagram of another example of setting contents stored in the memory in the second embodiment.

The present disclosure will be specifically described with reference to drawings showing embodiments thereof.

(First embodiment)
FIG. 1 is a schematic diagram of a charging/discharging system 200 including a charging/discharging device 1. As shown in FIG. The charging/discharging system 200 includes a charging/discharging device 1 and a load 21 that uses power that can be supplied via the charging/discharging device 1. The load 21 is an electrical load placed in a building such as a home or business office. The charging/discharging system 200 is connected to a power system E, which is a power source, by a power line PL. The power source is not limited to the power system E, but may be a DC power grid. The power supplied from the power source is branched to the load 21 and the charging/discharging device 1 at the distribution board 28 . The charging/discharging system 200 may include a plurality of charging/discharging devices 1 installed in a parking lot that can be used by a large number of vehicles V. The charging/discharging system 200 may also include a fuel cell.

A vehicle V, which is an electric vehicle having a built-in power storage device, is connected to the charging/discharging device 1 . The charging/discharging device 1 is capable of charging the power storage device of the vehicle V, and is also capable of supplying power to the load 21 using the power storage device of the vehicle V as a power source.

As shown in FIG. 1, the charging/discharging system 200 may include not only the charging/discharging device 1 and the load 21, but also a power storage device 22 or a power generation device 23, etc., which are interconnection devices, and may be connected to the upper level via the communication line CL. It may be connected to the device 29. When connected to the charging/discharging device 1, the host device 29 transfers power from the power source to the load 21, transfers power from the power generation device 23 to the load 21 group, and transfers power to the charging/discharging device 1 from the vehicle. Controls charging and discharging at V. As shown in FIG. 1, the host device 29 may be installed externally as a server device and controlled remotely, or it may be installed on the distribution board 28 to control the supply and demand, charging and discharging of electricity within the building. , a HEMS (Home Energy Management System) that controls power generation and the like. The host device 29 may be built into the charging/discharging device 1 to control charging and discharging.

The charging/discharging system 200 includes a protective relay such as a ground fault overvoltage relay 24 or a reverse power relay 25. Signals output from these protective relays (RPR (Reverse Power Relay) signal, OVGR (Overvoltage Relay) signal, etc.) are input to the charging/discharging device 1. As a result, the charging/discharging device 1 can detect a state in which operation should be stopped, such as when a ground fault occurs in the system or when reverse power occurs. I can do it.

FIG. 2 is a block diagram showing the connection configuration of the charging/discharging device 1 and the vehicle V. Vehicle V is an electric vehicle (EV), a hybrid electric vehicle (HEV), a plug-in hybrid electric vehicle (PHEV), or a fuel cell vehicle (FCV). It is.

Vehicle V includes a large-capacity power storage device 30 that can be used for driving the vehicle. Vehicle V includes a connector 35 to power line VPL connected to power storage device 30 , and an on-vehicle control device 32 that controls charging and discharging in power storage device 30 . A DC relay 33 included in the charging/discharging circuit on the vehicle V side is interposed in the power line VPL, and the on-vehicle control device 32 controls ON and OFF of the DC relay 33. The connector 35 includes a communication terminal for communicating with the on-vehicle control device 32.

The charging/discharging device 1 includes a charging/discharging circuit 10 , a control section 11 , a vehicle communication section 12 , a power supply section 13 , an operation section 14 , an external signal reception section 17 , and an upper communication section 16 . The charging/discharging circuit 10 includes various circuit elements such as a bidirectional inverter and various relays. The charging/discharging circuit 10 includes a DC relay 10a connected to a connector 15 connected to the vehicle V, and a parallel disconnection relay 10b interposed in a power line PL connected to the power system E. The charging/discharging circuit 10 is connected to a connector 15 via a DC relay 10a and a power line PL.

The control unit 11 controls circuit elements included in the charging/discharging circuit 10, and controls charging/discharging switching, current amount, and voltage amount for the power storage device 30 of the vehicle V. The control unit 11 includes a CPU (Central Processing Unit) and a nonvolatile memory, and the CPU controls the charging/discharging circuit 10 by executing control processing based on a computer program 1P stored in the memory.

The computer program 1P stored in the memory of the control unit 11 may be one in which the CPU reads out the computer program 9P stored in the computer-readable storage medium 9 and stores it in the memory.

The vehicle communication unit 12 can be communicatively connected to the vehicle control device 32 via the connector 15 and the connector 35. The communication connection protocol of the vehicle communication unit 12 only needs to comply with the charging/discharging method corresponding to the vehicle V and the connectors 15, 35, and one of the protocols may be selected in accordance with a plurality of protocols to apply to different charging/discharging methods. It may also be possible to perform it selectively. In this embodiment, the vehicle communication unit 12 communicates with the vehicle-mounted control device 32 via CAN (Controller Area Network). Communication may be realized by PLC (Power Line Communication).

The power supply section 13 includes a UPS (Uninterruptible Power Systems) circuit and a starting storage battery, and supplies power to the control section 11 . The power supply unit 13 supplies the power necessary for starting the charging/discharging device 1 from the starting storage battery during a power outage. The power supply unit 13 may charge the starting storage battery with power from the power system E, the power generation device 23, or the vehicle V.

The operation unit 14 includes a display, a touch panel with a built-in display, and physical buttons. The operation unit 14 is exposed on the exterior of the charging/discharging device 1 and receives touch panel operations. The operation unit 14 may be configured to be isolated from the main body of the charging/discharging device 1, and may be configured as a remote controller in a building, for example. The operation unit 14 may be configured to receive operation information received via an operation interface of a communication terminal such as a smartphone or a tablet terminal owned by the administrator (user) via wireless communication. The control unit 11 executes a setting reception process, which will be described later, based on the operation accepted by the operation unit 14. The operation unit 14 may include a lamp, and may be controlled by the control unit 11 to turn on in a color or pattern depending on the state.

The higher-level communication unit 16 realizes communication with the higher-level device 29 via the communication line CL or via wireless communication. The upper communication unit 16 may be, for example, a communication module compatible with a communication line CL compliant with the Ethernet (registered trademark) or Modbus (registered trademark) protocol, or a communication module compatible with a communication line CL compatible with ECHONET/ECHONETLite (registered trademark). It may also be a corresponding communication module. The upper communication unit 16 may realize communication using PLC. The upper communication unit 16 may be a wireless communication module compatible with WiFi (registered trademark), Bluetooth (registered trademark), or carrier communication.

The external signal receiving unit 17 is a terminal that receives a signal output from the outside of the charging/discharging device 1 . The external signal receiving unit 17 receives, for example, a PRP signal, an OVGR signal, and other signals output from relays inside and outside the charging/discharging system 200. The external signal receiving unit 17 may receive an output from a switch provided in the charging/discharging system 200, as described later. The external signal reception unit 17 receives one or more signals. In the following description, the external signal reception unit 17 will be described as accepting two signals. The control unit 11 detects the signal level of the signal received by the external signal reception unit 17, and makes a transition to stop, standby, etc. based on the operation settings stored in the memory that correspond to the signals input at each terminal. control. The settings of the operation contents can be changed by operating the operation unit 14 as described later.

As shown in FIGS. 1 and 2, the charging/discharging circuit 10 of the charging/discharging device 1 configured as described above is connected to the DC relay 10a and the vehicle V side when the connector 15 is connected to the connector 35 of the vehicle V. It is connected to the power storage device 30 of the vehicle V via the DC relay 33 of the power line PL. As shown in FIGS. 1 and 2, the charging/discharging circuit 10 is connected to the power grid E through the disconnection relay 10b and the distribution board 28, and to interconnected devices (power storage device 22, power generation device 23, etc.) and the power line PL. It is connected. The charging/discharging device 1 controls the transfer of electric power between the electric power system E, the power storage device 30 of the vehicle V, and the interconnected equipment. The charging/discharging circuit 10 discharges the power storage device 30 to the power storage device 22 or the load via the power line PL, or discharges the power storage device 30 to the power storage device 22 or the load when the disconnection relay 10b, DC relay 10a, and DC relay 33 are all in the ON state. The power storage device 30 can be charged from the above.

The control unit 11 of the charging and discharging device 1 transmits and receives information to and from the on-vehicle control device 32 via the vehicle communication unit 12, and controls the charging and discharging circuit 10 based on the information. The control unit 11 may perform control based on information sent and received from the higher-level device 29 via the higher-level communication unit 16. In particular, before performing charging and discharging, the control unit 11 of the charging and discharging device 1 executes a predetermined connection sequence with the on-vehicle control device 32, and becomes ready to start charging and discharging. The predetermined connection sequence is defined, for example, in a charge/discharge control standard such as CHAdeMO (registered trademark).

The charging/discharging device 1 can set the control content of the control unit 11 based on an external signal input to the external signal receiving unit 17. FIG. 3 is a flowchart illustrating an example of a setting acceptance procedure in the first embodiment. When an administrator or a maintenance person selects an option setting in a setting menu on the operation screen displayed on the display of the operation unit 14 of the charging/discharging device 1, the following process is started.

The control unit 11 of the charging/discharging device 1 receives selection of either of the two terminals of the external signal receiving unit 17 (step S101). In step S101, the control unit 11 receives a selection of the number according to the number of terminals included in the external signal reception unit 17.

The control unit 11 selects one of "charging", "power supply", and "self-sustaining power supply" as the status for executing the operation details described below for the selected terminal (step S102). The control unit 11 may accept the situation identification data (situation number) as is.

The control unit 11 receives the selection of the operation contents when the signal level of the signal input to the selected terminal is turned on, for each situation selected in step S102 (step S103). In the first embodiment, the operation contents to be selected are: 1st, "standby (returns after 300 seconds from release)", 2nd, "standby (immediate return from release)", 3rd, "normal stop", The fourth option is "abnormal stop" and the fifth option is "do nothing." The control unit 11 may accept the identification data (action content number) of the action content as is. The content of the operation is not limited to this, the time until recovery is not limited to 300 seconds, and there may be six or more selection targets.

The control unit 11 stores in memory the identification data (action content number) of the selected operation content in association with the identification data of the selected terminal, and the identification data (situation number) of the situation in which the operation content is performed. (step S104), and the setting reception procedure ends.

FIG. 4 is a diagram illustrating an example of the contents of the setting reception screen. The setting reception screen 140 includes a terminal selection interface 141, a situation selection interface 142, an operation content selection interface 143, and a setting button 144.

The terminal selection interface 141 includes a switching button, and each time the switching button is selected, the target terminal is switched cyclically. On the setting acceptance screen 140 in FIG. 4, the first "terminal 1" is selected.

The situation selection interface 142 includes a switching button, and each time the switching button is selected, the situation of the object to be controlled is changed. On the setting reception screen 140 in FIG. 4, "charging" is selected as the situation in which the operation content is to be executed. In the example of FIG. 4, the status selection interface 142 displays the status in text (here, "charging") and allows selection using a switching button, but there is also an input field that accepts input of status identification data (status number). It may be.

The action content selection interface 143 includes a switching button, and each time the switching button is selected, the action content set for the target situation is displayed. On the setting reception screen 140 in FIG. 4, "standby (return after 300 seconds from release)" is selected as the operation content. In the example shown in FIG. 4, the operation content selection interface 143 displays the operation content as text (here, "standby (returns after 300 seconds from cancellation)" and allows selection using a switching button; however, the operation content identification data ( It may also be an input field that accepts input of an action content number).

The settings acceptance screen 140 includes a settings button 144 . When the settings button 144 is selected, the settings for the operation content selected for each situation are stored in the memory of the control unit 11.

FIG. 5 is an explanatory diagram of an example of setting contents stored in the memory. As shown in Figure 5, the memory stores identification data (operation content numbers) of operation details in correspondence with identification data (status numbers) for charging, power supply, and standalone power supply for terminal identification data. is memorized. In FIG. 5, in order to make the explanation easier to understand, not only identification data but also each situation and control content are shown in characters regarding the situation and operation content, but the data to be stored may be identification data.

In the example shown in Figure 5, if the signal level of the signal input to the first terminal "terminal 1" turns on, the system goes into standby when the operating status is "power supply" (the signal level turns off). The operation is set to return after 300 seconds. When the signal level of the signal input to the first terminal "terminal 1" is on, nothing is selected when the operating status is "charging" and "independent power supply", i.e. , it is set to do nothing when the signal is turned on. In this case, charging or power supply continues as is. Similarly, if the signal level of the signal input to the second terminal "terminal 2" turns on, it will stand by no matter what the driving situation is (it will immediately return when the signal level is turned off). This behavior is set.

As shown in Figure 5, the operation contents (standby, stop, or do nothing (continue the same operation)) when the signal level of the external signal is turned on can be set for each terminal and operation status. Accordingly, the charging/discharging device 1 is set to perform the following control depending on usage conditions and the like.

In the first example, the administrator or maintenance person of the charging/discharging device 1 sends the RPR signal from the reverse power relay 25 to the first terminal of the external signal receiving unit 17, and sends the RPR signal to the second terminal of the external signal receiving unit 17. Settings for inputting the OVGR signal from the ground fault overvoltage relay 24 will be explained.

In this case, the contents shown in FIG. 5 can be set by the administrator or the person in charge of maintenance. In this setting, when it is detected via the external signal reception unit 17 that reverse power is detected and the RPR signal is turned on while connected to the power grid E, the control unit 11 detects that power is being supplied. In some cases, the output from the power storage device 30 of the vehicle V is stopped. During charging, the control unit 11 does nothing, that is, continues the operation without stopping, because the reverse power is not caused by the control of the charging/discharging device 1. The same applies when the device is on standby or stopped. The control unit 11 does not do anything even during independent power supply when the power system is not connected to the power system E, that is, the control unit 11 continues the operation without stopping. In this way, the administrator or the person in charge of maintenance of the charging/discharging device 1 can set the operation contents according to the situation.

When it is detected via the external signal reception unit 17 that the OVGR signal is turned on, the control unit 11 selects “charging,” “discharging,” and “independent power supply” in the settings shown in FIG. In either case, the output from the power storage device 30 of the vehicle V and the operation thereof are stopped. In the case of independent power supply, the operation is stopped in order to prevent the starting storage battery of the power supply unit 13 from deteriorating. In either case, when it is detected that the ground fault has been resolved based on the settings, the control unit 11 immediately executes a predetermined sequence to connect with the on-vehicle control device 32, and performs charging/discharging or self-sustaining operation. Return to power supply.

Further, in the first example, when "standby (immediate return from release)" is set, when it is detected that the OVGR signal is turned on, the control unit 11 displays "charging" and "power supply". "Middle (discharging)", the output from the power storage device 30 of the vehicle V is stopped. However, the control unit 11 transitions to the connection standby state without executing the predetermined sequence at the end (such as cutting off the communication connection). The connection standby state means that the DC relay 10a of the charging/discharging device 1 and the DC relay 33 of the vehicle V are on, the communication connection between the charging/discharging device 1 and the on-vehicle control device 32 is maintained, and information is not being sent or received. It is possible to start charging and discharging at any time. When "standby (immediate return from cancellation)" is set, the control unit 11 stops the output and ends the operation if "independent power supply" is in progress at the timing when it is detected that the OVGR signal is turned on. The content may be such that the predetermined sequence for the time is also executed and ended, and the operation is not started until the administrator manually restores the charging/discharging device 1. Hereinafter, when the setting is "standby (immediate return from release)", the same operation may be performed.

In the second example, the administrator or maintenance person of the charging/discharging device 1 sends a contact output signal from the outside to the terminal of the external signal reception unit 17, such as a contact output signal when an abnormality is detected in a grid interconnection device, etc. The settings for the case where a signal is input will be explained. When the administrator or maintenance person of the charging/discharging device 1 wants to temporarily stop the output when a contact output signal from the outside is input and immediately restart the output, the following settings are made.

FIG. 6 is an explanatory diagram of the setting contents in the second example. In the second example, it is set only for the first terminal "terminal 1". In the second example as well, if the signal level of the signal input to the first terminal "terminal 1" turns on, it will wait no matter what the driving situation is (when the signal level is turned off, The operation is set to return immediately).

In the second example, when it is detected via the external signal reception unit 17 that the contact output signal from the outside is turned on, the control unit 11 selects “charging,” “discharging,” and “independent power supply.” In either case, the output from the power storage device 30 of the vehicle V and the operation are stopped. The administrator or maintenance person of the charging/discharging device 1 controls the output to be temporarily stopped when a contact output signal is input from the outside, and to be immediately restored when the contact output signal is turned off. becomes possible.

In the third example, the administrator or maintenance person of the charging/discharging device 1 sends a contact output signal from the outside to the terminal of the external signal reception unit 17, such as a contact output when an abnormality is detected in a grid interconnection device, etc. Other settings in the case of inputting a signal will be explained. In the third example, a case will also be explained in which the administrator or maintenance person of the charging/discharging device 1 adds a switch that is turned on under some circumstances and inputs the output of the switch to the terminal of the external signal reception unit 17. do. The administrator or maintenance person of the charging/discharging device 1 can temporarily stop charging only when an external contact output signal is input, and abnormally stop when an added switch is turned on. If you want to do this, set it as follows.

FIG. 7 is an explanatory diagram of the setting contents in the third example. In the third example, if the signal level of the signal input to the first terminal "terminal 1" turns on, the system will wait when the driving status is "charging" (the signal level turns off). The operation content is set to ``immediately return when the When the signal level of the signal input to the first terminal "terminal 1" is on, and the operating status is "power supplying" or "self-sustaining power supply", do nothing, that is, do not stop operation. The settings have been made. The operation content is set such that when the signal level of the signal input to the second terminal "terminal 2" is turned on, an abnormal stop occurs regardless of the operating condition.

In the third example, when it is detected via the external signal reception unit 17 that the contact output signal from the outside is turned on, the control unit 11 temporarily controls the charging/discharging device 1 only when “charging is in progress”. transitions to standby state, and does nothing in other situations. When the contact output signal is turned off, the control unit 11 executes a predetermined sequence to perform connection processing with the on-vehicle control device 32, and returns to resume charging.

When it is detected via the external signal reception unit 17 that the added switch is turned on, the control unit 11 selects “charging,” “discharging,” and “independent power supply” in the settings shown in FIG. In either case, the output from the power storage device 30 and the operation of the vehicle V are abnormally stopped. In this way, if a certain condition occurs, it is possible to set the device to stop abnormally.

Since the charging/discharging device 1 is capable of setting contents as shown in FIGS. 5 to 7, when the signal level of the signal accepted by the external signal receiving unit 17 turns on, the control unit 11 The type of control to be performed depending on the driving situation can be set in various combinations.

(Modified example)
Note that since the external signal reception unit 17 can receive a plurality of signals, if it is assumed that the plurality of signals will be turned on, it is necessary to set which operation content should be prioritized. FIG. 8 is a diagram showing an example of setting priorities. FIG. 8 shows an example in which priority settings are added to the operation content settings shown in FIG. 5. In the example of FIG. 8, when the signals input to the first terminal and the second terminal are both turned on, priority is given to the operation content based on the signal input to the second terminal. Note that the setting of the priority order is preferably achieved by accepting the input of a numerical value corresponding to the priority order when accepting the selection of a terminal on the selection interface 141 of the setting reception screen 140 (S101).

Alternatively, it may be possible to set priorities for each operation content. FIG. 9 is a diagram showing priorities for each operation content. In the example of FIG. 9, "Emergency stop" is added as the fifth option of the operation content, and the action content "Emergency stop" is set with the highest priority. It is preferable that the example shown in FIG. 9 be set as a default. Next, priorities are set in the order of "abnormal stop" and "normal stop", and further priorities are set in the order of "standby (recovery 300 seconds after release)" and "standby (immediate return from release)". .

The operation details of the "emergency stop" are to immediately turn off the DC relay 10a and the DC relay 33, speed up the rate of decline of the charging and discharging output, and immediately stop the output, and communication between the charging and discharging device 1 and the on-vehicle control device 32. Also disconnects. In the case of "emergency stop", the stoppage remains stopped until the user manually performs a return operation. In addition, "**Stop" stops the output while maintaining the communication connection between the charging/discharging device 1 and the vehicle-mounted control device 32. When the settings are as shown in the example in Figure 10, the operation content is set to "Charging" and "Standby (immediate return from release)" for the first terminal, and for the second terminal When "emergency stop" is set to "charging", the control unit 11 operates as follows. If the signal input to any terminal turns on during charging, the control unit 11 refers to the operation contents set for each terminal and selects the operation contents of the higher priority one, for example, "Emergency stop". ” will be carried out. By providing a priority order, even if the external signal reception unit 17 is configured to be able to input a plurality of signals, it is possible to operate it safely and appropriately.

(Second embodiment)
In the second embodiment, the charging/discharging device 1 sets the operation contents for each situation such as "charging", "power supply", and "self-sustained power supply" based on the signal received by the external signal reception unit 17. Different situations are accepted depending on the type of operation, etc. The configuration of the charging/discharging system 200 in the second embodiment is the same as that of the charging/discharging system 200 in the first embodiment, except for the setting process and control based on the setting described later. Therefore, common components will be designated by the same reference numerals and detailed explanations will be omitted.

FIG. 10 is a flowchart illustrating an example of a setting acceptance procedure in the second embodiment. When an administrator or a maintenance person selects an option setting in a setting menu on the operation screen displayed on the display of the operation unit 14 of the charging/discharging device 1, the following process is started.

The control unit 11 of the charging/discharging device 1 receives selection of either of the two terminals of the external signal receiving unit 17 (step S201). In step S201, the control unit 11 receives a selection of the number according to the number of terminals included in the external signal reception unit 17.

The control unit 11 receives the selection of the operation details for which the signal level for the selected terminal is to be set (step S202). In step S<b>202 , the control unit 11 receives a selection of any of the operation details that can be selected by the charging/discharging device 1 . The operation details include, for example, "charging operation" in which charging is specified and started using the operation unit 14, "power supply operation" in which power supply is specified and started using the operation unit 14, and "self-sustaining operation" in which independent power supply is specified and started. including. The operation details further include a "reserved operation" in which charging or power supply is reserved together with a time, and an "EMS operation" in which charging or power supply is performed in response to an instruction from the host device 29. The operation details further include an "output autonomous operation" in which charging and power supply are appropriately performed under the control of the control unit 11 itself, and a "charging charge operation" in which charging is performed in accordance with charges. In step S202, the control unit 11 may accept the driving content identification data (driving content number) as is.

The control unit 11 selects one of "charging", "power supply", and "self-sustaining power supply" as the situation in which the operation content described below is executed for each selected operation content (step S203). In step S203, when the selected operation content is "charging operation," the control unit 11 may select only "charging" and not allow others to be selected. Similarly, when "power feeding operation" is selected, "power supplying" is the only option, and when "standalone operation" is selected, "independent power supply" is the only option. Good too. If "reserved operation" is selected, the control unit 11 accepts the selection of "charging" or "power supply" in step S203, but does not accept the selection of "independent power supply". Similarly, when "EMS operation" and "output autonomous operation" are selected, the control unit 11 accepts the selection of "charging" or "power supply", but does not accept the selection of "self-sustained power supply". . When "charged charging operation" is selected, the control unit 11 accepts selection of only "charging". In step S203, the control unit 11 may accept the situation identification data (situation number) as is.

In the selected situation, the control unit 11 accepts the selection of the operation content when the signal level of the signal input to the terminal is turned on (step S204). In the first embodiment, the operation contents to be selected are: 1st, "standby (returns after 300 seconds from release)", 2nd, "standby (immediate return from release)", 3rd, "normal stop", The fourth option is "abnormal stop" and the fifth option is "do nothing." The content of the operation is not limited to this, the time until recovery is not limited to 300 seconds, and there may be six or more selection targets. In step S204, the control unit 11 may accept the identification data (action content number) of the action content as is.

The control unit 11 identifies the selected operation content for each driving status identification data (situation number) in association with the identification data of the selected terminal. The data (operation content number) is stored in the memory (step S205), and the setting reception procedure is ended.

FIG. 11 is a diagram illustrating an example of the contents of the setting reception screen 140 according to the second embodiment. The setting reception screen 140 includes a terminal selection interface 141, an operation content selection interface 146, a situation selection interface 142, an operation content selection interface 143, and a setting button 144. The terminal selection interface 141, the situation selection interface 142, and the operation content selection interface 143 are the same as those selected in the explanatory diagram of FIG. 4, so detailed explanations will be omitted.

In the second embodiment, the driving content selection interface 146 can accept selection of driving content. The driving content selection interface 146 includes a switching button, and each time the switching button is selected, the driving content is switched. On the setting reception screen 140 in FIG. 11, "reserved operation" is selected as the operation content. The driving content selection interface 146 may be an input field that accepts input of driving content identification data (driving content number).

Also on the setting reception screen of the second embodiment, when the setting button 144 is selected, the settings of the operation content and the operation content selected for each terminal are stored in the memory of the control unit 11 for each terminal. .

FIG. 12 is an explanatory diagram of an example of setting contents stored in the memory in the second embodiment. As shown in FIG. 12, the memory stores operation content identification data (status numbers) in correspondence with identification data (status numbers) for charging, power supply, and standalone power supply for each operation content, with respect to terminal identification data. The operation content number) is stored. In the example of FIG. 12, only the first terminal "terminal 1" is set. In the example of Fig. 12, when the operation content is "charging operation" and the operation status is "charging", when the signal level of the signal input to the first terminal turns on, the The operation settings have been made. [2] is an operation setting of waiting (immediate return after the signal level is turned off). If the operation content is "power supply operation" and the operation status is "power supply in progress", it is set to [1]. [1] is an operation setting of waiting (returning 300 seconds after the signal level is turned off). When the driving content is "independent driving" and the driving status is "independent", [3] is set. [3] is a normal stop.

Similarly, in the example of FIG. 12, when the driving status is "charging" during "reserved operation" and the signal level of the signal input to the first terminal turns on, [2 ], and when it is “power feeding”, it is set to [1]. The same applies to driving in "EMS operation", "output autonomous operation", and "reserved operation". On the other hand, in the example of FIG. 12, when the driving status is "charging" in "charging charging operation" and the signal level of the signal input to the first terminal turns on, [3] It is set.

As described above for the charging/discharging device 1, since settings for operation details can be accepted for each operation and situation, the administrator or maintenance worker of the charging/discharging device 1 can use the first terminal of the external signal reception unit 17. 12, when the OVGR signal is on and power is being supplied, the output is stopped, and after the OVGR signal is restored (off), the OVGR signal is input from the ground fault overvoltage relay 24. It can be set to automatically return after 300 seconds). Further, during charging, the administrator or maintenance worker of the charging/discharging device 1 can set the charging/discharging device 1 to stop normally when the OVGR signal is on during charge charging operation.

FIG. 13 is an explanatory diagram of another example of setting contents stored in the memory in the second embodiment. In FIG. 13, as in FIG. 12, the memory stores information about the operation contents in correspondence with the terminal identification data (status number) for charging, power supply, and independent power supply for each operation content. Identification data (action content number) is stored. In the example of FIG. 13, only the first terminal "terminal 1" is set. In the example in Figure 13, when the operation content is "charging operation" and the operation status is "charging", when the signal level of the signal input to the first terminal turns on, it is set to [2]. is being done. Also, when the operation content is "power supply operation" and the operation status is "power supply in progress", it is set to [2]. When the driving content is "independent driving" and the driving status is "independent", [3] is set. [3] is a normal stop.

Furthermore, in the example shown in Fig. 13, the signal level of the signal input to the first terminal is on even if the operating status is "charging" or "power supplying" during "reserved operation". When this happens, it is set to [2]. The same applies to driving in "EMS operation", "output autonomous operation", and "reserved operation". In the example of FIG. 13, when the driving status is "charging" in "charging charging operation" and the signal level of the signal input to the first terminal turns on, it is set to [3]. There is.

Since settings as shown in FIG. 13 are possible, the administrator or maintenance worker of the charging/discharging device 1 inputs an output stop signal from another device to the first terminal of the external signal reception unit 17, and As shown in No. 13, when the output stop signal is on, the output can be stopped, and after being turned off (turned off), it can be set to automatically return after a predetermined time (300 seconds). Further, during charging, the administrator or maintenance worker of the charging/discharging device 1 can set the charging/discharging device 1 to stop normally when the OVGR signal is on during charge charging operation.

FIG. 14 is an explanatory diagram of another example of setting contents stored in the memory in the second embodiment. In FIG. 14, similar to FIG. 12, the memory stores information about the operation contents in correspondence with the identification data (status number) for charging, power supply, and standalone power supply for each operation type, for each terminal identification data. Identification data (action content number) is stored. In the example of FIG. 14, only the first terminal "terminal 1" is set. In the example in Figure 14, only when the operation content is "output autonomous operation" and the operation status is "power supply", when the signal level of the signal input to the first terminal turns on, [2] is displayed. In other operation contents and other situations, it is set to be "blank", that is, to do nothing and continue operation as is.

Since the settings shown in FIG. 14 are possible, the administrator or maintenance worker of the charging/discharging device 1 inputs the signal from the added switch to the first terminal of the external signal reception unit 17, and the settings shown in FIG. When the switch is on, the output is stopped (automatically restored after a predetermined time (300 seconds) after being turned off) when the output is in autonomous operation and power is being supplied. You can set it to do this. For example, the administrator or maintenance worker of the charging/discharging device 1 prepares a switch to be turned on during times when it is not desired to use it for power supply, and if the switch is turned on during output autonomous operation, the power supply is You can also set the output to stop (standby) even when the computer is in use.

In this way, the charging/discharging device 1 of the first embodiment and the second embodiment determines the operation content to be performed by the charging/discharging device 1 depending on the external signal input to the terminal and whether or not that signal is on. It can be selected by the administrator or maintenance worker depending on the situation, such as charging or power supply. Thereby, the operation can be selected depending on the usage environment such as the connection relationship with other devices at the installation location of each charging/discharging device 1. The administrator (user) can appropriately install an additional switch and determine the contents of standby and stop operations depending on whether the switch is turned on or off. By setting in advance, it is possible to stop the output depending on the situation and then automatically restore it. Once the standby process is performed, the frequent turning on and off of the DC relay 33 of the vehicle V can be avoided and the rate of wear of the DC relay 33 can be slowed down. It is also possible to choose to stop based on an external stop signal from a relay such as an OVGR signal or RPR signal, and in that case, the vehicle V side will also be in a stopped state, so power consumption of the power storage device 30 and battery can be suppressed. It is possible.

The embodiments disclosed above are illustrative in all respects and are not restrictive. The scope of the present invention is indicated by the claims, and includes all changes within the meaning and range equivalent to the claims.

1 Charging and discharging device 11 Control unit 12 Vehicle communication unit 14 Operation unit 17 External signal reception unit 1P, 9P Computer program 24 Earth fault overvoltage relay 25 Reverse power relay 30 Power storage device 32 On-vehicle control device V Vehicle

Claims (7)

A charging/discharging device that is connected to a storage battery provided in a vehicle and includes a control unit that controls charging and discharging between the storage battery and a power source or a load,
The charging/discharging device includes an external signal receiving unit that receives one or more signals from devices other than devices mounted on the vehicle,
The control unit includes:
Settings of operation contents including standby and stop of the charging/discharging device when one or more signals received by the external signal reception unit are detected to be on are set for each of the one or more signals during charging and discharging. We accept requests for each operating situation, including during stand-alone power supply.
The received operation content settings are stored for each driving situation for each of the one or more signals,
The charging/discharging device operates according to the stored settings when one or more signals accepted by the external signal receiving section are detected to be on. The control unit accepts a selection of not doing anything, in addition to standby and stop, as the setting of the operation content.
The charging/discharging device according to claim 1. The charging/discharging device according to claim 1 or 2, wherein the external signal reception unit receives a plurality of external stop signals output from a relay. The charging/discharging device according to claim 1 or 2, wherein the external signal receiving section receives a contact output signal. The charging/discharging device according to claim 1 or 2, wherein the external signal receiving section receives an output from an external switch. A method for controlling a charging/discharging device that is connected to a storage battery provided in a vehicle and controls charging and discharging between the storage battery and a power source or a load, the method comprising:
The charging and discharging device includes an external signal reception unit that receives one or more signals from devices other than devices installed in the vehicle,
The control unit of the charging/discharging device includes:
Settings of operation contents including standby and stop of the charging/discharging device when one or more signals received by the external signal reception unit are detected to be on are set for each of the one or more signals during charging and discharging. We accept requests for each operating situation, including during stand-alone power supply.
The received operation content settings are stored for each driving situation for each of the one or more signals,
A charging/discharging control method comprising: operating according to stored settings when one or more signals received by the external signal receiving section are detected to be on. A computer installed in a charging/discharging device that is connected to a storage battery installed in a vehicle and controls charging and discharging between the storage battery and a power source or load,
Operation details including standby and stop of the charging/discharging device when one or more signals received by an external signal reception unit that receives one or more signals from equipment other than equipment mounted on the vehicle is detected to be on. Accept settings for each driving situation including charging, discharging, and independent power supply for each of the one or more signals,
The received operation content settings are stored for each driving situation for each of the one or more signals,
A computer program that executes a process of controlling operations according to stored settings when one or more signals received by the external signal reception section are detected to be on.

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