JP6504101B2 - Power controller - Google Patents

Description

  The present invention relates to a power control device for charging or discharging an electric vehicle or the like.

  In recent years, electric vehicles driven by electric power have begun to be widely used in place of automobiles using internal combustion engines that have a large environmental load due to exhaust gas. An electric car is equipped with a large capacity storage battery (battery) for storing electric power used during traveling. Therefore, conventionally, as a new method of utilizing the electric vehicle, the power in the storage battery of the electric vehicle is supplied to each load (device) in the home at the time of a power failure, and the power of the commercial power system is It has been proposed to supply power from the electric car to each load in the home in an auxiliary manner.

  In many cases, so-called charge and discharge devices having both charge and discharge functions are used for charging electric vehicles and supplying electric power (discharging) from electric vehicles to homes.

  A user of the charge / discharge device can reserve in advance a time zone in which the charge / discharge device performs charging or discharging to the charge / discharge device. The operation of charging or discharging based on such reservation is hereinafter referred to as reservation operation. The user can charge the electric vehicle, for example, in the absence of the user (for example, when going out) or at a low electricity rate (for example, at midnight) by using the charge / discharge device corresponding to the reserved operation.

  However, the conventional charge / discharge device has a problem that the reservation operation may not actually be performed because the charge / discharge device can not normally charge or discharge the electric vehicle at the start of the reservation operation. Such non-execution of reserved driving can occur due to some abnormality or setting in the charge / discharge device or the electric vehicle.

  As an abnormality on the charge / discharge device side, for example, the charge / discharge connector is not correctly connected to the electric vehicle, the charge / discharge connector is not locked, and the charge / discharge cable is broken. Further, as a setting on the charge / discharge device side, it can be mentioned that a reserved driving operation for discharge is set for an electric vehicle not compatible with discharge.

  As settings of the electric car side, for example, the electric car is not in the parking state, the ignition of the electric car is on, the operation reservation of the air conditioner is made in the electric car side, or in the electric car side That the reservation of the charge operation by another charge system different from the charge system of the charge / discharge device is made can be mentioned.

  If there is a factor that hinders the charging or discharging of the electric vehicle by the charging / discharging device, the charging / discharging device should normally perform the reserved charging or discharge even if the user correctly sets the reservation operation. I can not Therefore, in the conventional charge / discharge device, for example, even if the user reserves the charge of the electric vehicle at midnight to the charge / discharge device, the reserved charge is not actually performed, so the user can be in the early morning There was a risk that something could not be done even if you wanted to use an electric car.

  One of the techniques that can address such problems is disclosed in Patent Document 1. In Patent Document 1, after a connector cable is connected to an electric vehicle, when a charge request signal is input to the charge reservation stand, information is exchanged between the quick charger and the electric vehicle using a control line and a communication line. And a charging method for verifying the connection status of the connector cable by the connection confirmation device of the quick charger is disclosed.

  In the technique of Patent Document 1, the confirmation of the connection state between the charge reservation stand and the electric vehicle is performed in advance before the charging start time, and when the confirmation is normally made, the connection between the two is cut off. After that, the charging reservation stand stands by until the charging start time, and when time comes, it connects to the electric car and starts charging. As described above, according to the technology of Patent Document 1, since the normal connection with the electric car has been confirmed in advance before the start of the reserved charging, it is expected that the reserved charging will be performed normally.

Unexamined-Japanese-Patent No. 2013-27204 (February 4, 2013 publication)

  However, Patent Document 1 does not mention at all the locking control of the connector after the connection situation is over. If the connector is unlocked after confirmation of the connection status, the connector may be accidentally removed from the electric vehicle before the charging start time comes. Therefore, the technique of Patent Document 1 has a problem that there is a possibility that the charging of the electric vehicle may not be reliably started even if the charging order comes after the connection status ends normally.

  The present invention has been made to solve the above-mentioned problems. And the purpose is to realize a power control device capable of executing reservation operation more reliably.

  A power control device according to aspect 1 of the present invention is a power control device that charges or discharges a storage battery mounted on a vehicle, in order to solve the above-mentioned problems, and for charging or discharging the storage battery. A cable, a connector provided at one end of the cable and connected to the vehicle, a power control unit for charging or discharging the storage battery through the cable and the connector, and a series for charging or discharging the storage battery A determination unit that determines whether the power control unit is in a state in which the storage battery can be charged or discharged before a defined start condition for causing the power control unit to start the processing procedure of From when it is determined that the power control unit can charge or discharge the storage battery, the vehicle is kept on the vehicle from when the defined start condition is satisfied. Connector is characterized in that it comprises a and a lock control unit that maintains a state of being locked.

  According to the above configuration, the power control device starts a series of processing procedures for charging or discharging the storage battery of the vehicle when the prescribed start condition is satisfied. The operation of such a power control apparatus is hereinafter referred to as a reserved operation. The power control device determines whether or not the power control unit can charge or discharge the storage battery of the vehicle before the start condition of the reserved driving is satisfied. Thereby, the start condition of the reservation operation is satisfied in a state where the power control device can not charge or discharge the storage battery, and as a result, it is possible to prevent a situation where the reservation operation is not normally executed.

  If the power control unit determines that the storage battery can be charged or discharged before the start condition of the reserved operation is satisfied, the power control device further operates until the start condition of the reserved operation is satisfied. , Maintain the connector lock on the vehicle. As a result, since the connector can be prevented from being removed from the vehicle by mistake before the reserved driving is started, it is possible to more reliably prevent the reserved driving from being started.

  As described above, the power control device has the effect of being able to execute the reserved operation more reliably.

  In the power control apparatus according to aspect 2 of the present invention, in the above aspect 1, the power control unit starts a series of processing procedures for charging or discharging the storage battery before the start condition is satisfied, Furthermore, when it is determined that the power control unit is in the state where the storage battery can be charged or discharged while the series of processing procedures are being performed, the series of processing procedures are ended.

  According to the above configuration, it is not necessary to maintain the preparation state for charging or discharging the storage battery until the start condition of the reserved operation is satisfied, so power consumption in the power control device can be reduced. Furthermore, consumption of the storage battery of the electric vehicle can be prevented.

  In the power control apparatus according to aspect 3 of the present invention, in the above aspect 2, when the determination section determines that the communication between the power control section and the vehicle is established while the power control section is executing the series of processing procedures The power control unit determines that the storage battery can be charged or discharged, while the power control unit does not establish communication with the vehicle while executing the series of processing procedures; It is characterized in that the power control unit determines that the storage battery can not be charged or discharged.

  According to the above configuration, it is possible to more quickly determine whether the power control unit is in the state of being capable of charging or discharging the storage battery.

  In the power control apparatus according to aspect 4 of the present invention, in any of the above aspects 2 or 3, the determination section determines whether the power control section is charging from the vehicle while the power control section is executing the series of processing When receiving a signal permitting discharge, the power control unit determines that the storage battery can be charged or discharged, while the power control unit is executing the series of processes. Is characterized in that the power control unit determines that the storage battery can not be charged or discharged when it does not receive a signal for permitting charging or discharging from the vehicle.

  According to the above configuration, it can be determined more reliably whether or not the power control unit is in a state in which the storage battery can be charged or discharged.

  In the power control apparatus according to aspect 5 of the present invention, in any one of the above aspects 2 to 4, the power control section actually performs the processing on the vehicle while the power control section is executing the series of processing. If charging or discharging can be performed, the power control unit determines that the storage battery can be charged or discharged, while the power control unit performs the above-described series of processing. It is characterized in that, when the unit can not actually charge or discharge the vehicle, the power control unit determines that the storage battery can not be charged or discharged.

  According to the above configuration, it can be determined most reliably whether the power control unit can charge or discharge the storage battery of the vehicle.

  In the power control apparatus according to aspect 6 of the present invention, in any of the above aspects 2 to 5, the power control unit terminates the above series of processing procedures until the above-mentioned prescribed start condition is satisfied. Whether the power control unit can charge or discharge the storage battery while the series of processing procedures are started again and the determination unit is executing the series of processing procedures again It is characterized by judging again whether or not.

  According to the above configuration, once it is determined that the power control unit can charge or discharge the storage battery, it is determined again whether or not an abnormality has occurred before the start of the reserved operation. be able to.

  In the power control apparatus according to aspect 7 of the present invention, in any of the above aspects 1 to 5, a connection confirmation line for confirming the connection between the vehicle and the connector is provided in the cable, The determination unit determines that the power control unit can charge or discharge the storage battery when the connection confirmation line is conductive, and the connection confirmation line is not conductive when the connection confirmation line is not conductive. It is characterized in that the power control unit determines that the storage battery can not be charged.

  The process of confirming the presence or absence of conduction of the connection confirmation line can be performed prior to or independently of the series of processes for charging or discharging the storage battery. Therefore, according to the above configuration, it can be determined most quickly whether the power control unit can charge or discharge the storage battery.

  The power control apparatus according to aspect 8 of the present invention further includes a reception unit for receiving an instruction for setting the prescribed condition according to any one of the above aspects 1 to 7, and the determination unit When accepted, the power control unit is characterized by determining whether the storage battery can be charged or discharged.

  According to the above configuration, it is possible to determine whether or not the power control unit is in the state where the storage battery can be charged or discharged, in accordance with the setting instruction for the reserved operation.

  The power control apparatus according to aspect 9 of the present invention, when it is determined that the power control unit is in the state where the storage battery can be charged or discharged in any one of the above aspects 1 to 8, notifies that effect. The apparatus further comprises a state notification unit.

  According to the above configuration, when it is determined that the power control unit can charge or discharge the storage battery, the user can know that, and therefore can leave the power control apparatus with confidence. .

  In the power control apparatus according to aspect 10 of the present invention, in any one of the above aspects 1 to 9, an abnormality occurs when it is determined that the power control unit is not in the state where the storage battery can be charged or discharged. And an abnormality occurrence notification unit for notifying the user.

  According to the above configuration, when the power control unit determines that the storage battery can not be charged or discharged, the user can know that an abnormality has occurred. Be able to take

  According to an eleventh aspect of the present invention, in any one of the first to tenth aspects, an operation unit for stopping the operation of the power control device and a detection unit for detecting an operation on the operation unit are further provided. And the lock control unit is configured to operate the operation unit after the power control unit is determined to be capable of charging or discharging the storage battery and before the predetermined condition is satisfied. It is characterized in that when it is detected that the button is pressed, the lock of the connector with respect to the vehicle is released.

  According to the above configuration, a dedicated operation unit for releasing the lock of the connector is unnecessary, so the configuration of the power control apparatus can be simplified.

  The power control apparatus according to aspect 12 of the present invention is characterized in that, in any one of the above aspects 1 to 11, the defined start condition is that the current time coincides with the defined start time.

  According to the above configuration, the power control device can normally start charging or discharging of the storage battery of the vehicle when the current time reaches the start time.

  In the power control apparatus according to aspect 13 of the present invention, in any of the above aspects 1 to 12, the power control unit stops charging or discharging of the storage battery when a prescribed termination condition is satisfied, and the lock control unit The present invention is characterized in that the connector is kept locked in the vehicle after the power control unit stops charging or discharging the storage battery.

  According to the above configuration, since the lock of the connector is maintained after the end of the reservation operation, it is possible to prevent the connector from being removed from the vehicle by mistake before the start condition of the next reservation operation is satisfied.

  In the power control apparatus according to aspect 14 of the present invention, in the aspect 13, the termination condition as defined above is that the current time coincides with the prescribed end time, and the charging rate of the storage battery has reached a prescribed value. And / or that a predetermined time has elapsed since the establishment of the predetermined start condition.

  According to the above configuration, the power control device can normally end charging or discharging of the storage battery when any of the ending conditions is satisfied.

  According to an aspect of the present invention, there is an effect that reservation operation can be performed more reliably.

It is a figure which shows the structure of the charging / discharging apparatus which concerns on Embodiment 1 of this invention. It is a flowchart which shows the flow of the process at the time of the charging / discharging apparatus which concerns on Embodiment 1 of this invention performing reservation operation. It is a flowchart which shows the flow of the process at the time of the charging / discharging apparatus which concerns on Embodiment 2 of this invention performing a reservation driving | operation.

Embodiment 1
Embodiment 1 of the present invention will be described below with reference to FIGS. 1 and 2.

(Configuration of charge / discharge device 1)
FIG. 1 is a view showing the configuration of the charge / discharge device 1 according to Embodiment 1 of the present invention. As shown in this figure, the charge / discharge device 1 (power control device) includes an input device 11 (operation unit), an input unit 12 (detection unit, reception unit), a display panel 13 and a display unit 14 (status notification unit, abnormality Occurrence notification unit), control circuit 15, transformer 16, charge / discharge circuit 17 (power control unit), charge / discharge cable 18 (cable), charge / discharge connector 19 (connector), reserved operation control unit 20, chargeable state determination unit 21 (Determination unit) and a connector lock control unit 22 (lock control unit).

  The charge / discharge device 1 is used for both charging the storage battery mounted on the electric vehicle 2 (vehicle) from the commercial power grid 4 and supplying power from the storage battery of the electric vehicle 2 to the loads 32 in the building 3 . Usually, the charge / discharge device 1 is installed outside the building 3 (in a garage or the like). In the present embodiment, the charge / discharge device 1 is a device capable of charging / discharging the electric vehicle 2, for example, a device compliant with the CHAdeMO (registered trademark) standard. Similarly, the electric vehicle 2 is, for example, an electric vehicle compliant with the CHAdeMO standard.

  The building 3 is a construction, such as a house, a store, an office building, or a factory, which is used internally by humans for various activities such as living or working. Commercial AC power of a prescribed voltage (100 V / 200 V) is supplied from the commercial power system 4 to the building 3. The AC power is supplied to each load 32 (lighting device, home appliance device, electronic device, etc.) in the building 3 through the distribution board 31 in the building 3. Each load 32 operates using the supplied power (or the DC power converted therefrom).

  The charge / discharge device 1 is connected to the secondary side (downstream) of the distribution board 31 in the building 3 via an AC power line. When commercial AC power is normally supplied to the building 3, the charge / discharge device 1 can receive the AC power through the distribution board 31. The charge / discharge device 1 uses commercial AC power (hereinafter, system power supply) supplied from the commercial power grid 4 to the charge / discharge device 1 via the distribution board 31 as a control power source of the charge / discharge device 1. The control power supply is a power supply for obtaining control power of a predetermined voltage (for example, 12 V) necessary for activation of the charge / discharge device 1 and the subsequent operation.

  The input device 11 is a device used by the user to operate the charge / discharge device 1 or to input information to the charge / discharge device 1. For example, implemented as various buttons or switches. The input device 11 may be a touch panel. The input device 11 includes at least a start button and a stop button.

  The start button is a type of button for controlling the operation of the charge / discharge device 1, and more specifically, is a button for starting the operation. If the user presses the start button while the charge / discharge device 1 is stopped, the charge / discharge device 1 starts an operation of a set type (charge operation, self-sustaining operation, or grid-connected operation).

  The stop button is a type of button for controlling the operation of the charge and discharge device 1, and more specifically, is a button for causing the charge and discharge device 1 to stop the current operation. When the user presses the stop button, the charge / discharge device 1 stops the operation currently being executed, and then shifts to the standby state.

  The input unit 12 receives various inputs (operations) by the user on the input device 11.

  The display panel 13 is a device for displaying various types of information, and is realized as, for example, a liquid crystal display panel or the like.

  The display unit 14 displays various types of information for display on the display panel 13 by outputting the various information to the display panel 13.

  The control circuit 15 comprehensively controls the operation (charging, discharging) of the charge / discharge device 1. In the present embodiment, the reserved operation control unit 20, the chargeable state determination unit 21, and the connector lock control unit are provided in the control circuit 15.

  The transformer 16 converts the supplied AC power into AC power of another specified voltage. The charge / discharge device 1 may have a configuration in which the charge / discharge circuit 17 has an insulation portion with the AC power line, and the insulation portion functions as a transformer. In this case, the transformer 16 is unnecessary for the charge / discharge device 1.

  The charge / discharge circuit 17 charges the storage battery of the electric vehicle 2 by performing a prescribed procedure (charge sequence or discharge sequence) between the charge / discharge device 1 and the electric vehicle 2 or the storage battery of the electric vehicle 2 The power is supplied into the building 3 by discharging the power stored in the The charge and discharge circuit 17 executes, for example, a charge sequence or a discharge sequence corresponding to the CHAdeMO standard.

  The charge and discharge cable 18 is a cable capable of charging and discharging the electric vehicle 2, for example, a cable compliant with the CHAdeMO standard. As shown in FIG. 1, one end of the charge / discharge cable 18 is connected to the main body of the charge / discharge device 1. The charge and discharge cable 18 includes a power line 18 a and a signal line 18 b. Although only one power line 18 a and one signal line 18 b are shown in the drawing for the sake of simplicity, in actuality, two power lines 18 a (for the power line for the positive electrode and the negative electrode in the charge / discharge cable 18) Power lines) and a plurality of signal lines 18b. Two of the plurality of signal lines 18 b are signal lines capable of bi-directional communication for transmitting and receiving various signals by CAN (Controller Area Network) communication between the charge / discharge circuit 17 and the electric vehicle 2. It is. The rest transmits a specific signal such as a charge start signal, a charge permission signal, or a charge inhibition signal from the charge / discharge circuit 17 to the electric vehicle 2 or from the electric vehicle 2 to the charge / discharge circuit 17 This is a signal line (control line) that can only communicate in one direction.

  In the charge / discharge cable 18, a connection confirmation line (not shown) is further provided for confirming physical connection (fitting) between the charge / discharge connector 19 and the electric vehicle 2. When the charge / discharge connector 19 is properly connected to the electric vehicle 2, the connection confirmation line is conductive. On the other hand, when the charge / discharge connector 19 is not correctly connected to the electric vehicle 2, the connection confirmation line is not conductive. The charge / discharge device 1 can determine whether the charge / discharge connector 19 is connected to the electric vehicle 2 by confirming whether the connection confirmation line is conductive.

  The charge and discharge connector 19 is a connector capable of charging and discharging the electric vehicle 2, for example, a connector compliant with the CHAdeMO standard. As shown in FIG. 1, the charge and discharge connector 19 is attached to the other end of the charge and discharge cable 18. The charge and discharge connector 19 is connected to a charge and discharge port provided in the electric vehicle 2. When charge / discharge connector 19 is connected to the charge / discharge port and a prescribed procedure (charge sequence or discharge sequence) between charge / discharge device 1 and electric vehicle 2 is completed, the storage battery of electric vehicle 2 using charge / discharge device 1 Can be charged, or the power stored in the storage battery of the electric vehicle 2 can be supplied into the building 3 at the time of a power failure.

  Hereinafter, charging or discharging of the storage battery mounted on the electric vehicle 2 may be simply referred to as charging or discharging of the electric vehicle 2.

  The charge and discharge connector 19 is provided with a lock mechanism, and when charging the electric vehicle 2 or discharging from the electric vehicle 2, the charge and discharge connector 19 is locked to the electric vehicle 2 by the lock mechanism for safety. Thereby, it is possible to prevent the charge / discharge connector 19 from being removed from the electric vehicle 2 by mistake during charging or discharging of the electric vehicle 2.

  The reservation operation control unit 20 controls the reservation operation in the charge and discharge device 1. Details of the reservation operation will be described later.

  The chargeable state determination unit 21 determines whether the charge / discharge circuit 17 can charge or discharge the electric vehicle 2. Details of this determination will be described later.

  The connector lock control unit 22 controls locking of the charge / discharge connector 19 with respect to the electric vehicle. Details of the connector lock control will be described later.

  In addition, what can be an object of charge and discharge by the charge and discharge device 1 is not limited to the electric vehicle 2, and a storage battery for driving is mounted, and various vehicles (hybrids capable of traveling by converting electric power in the storage battery into driving force Cars, plug-in hybrid cars, fuel cell cars, etc.) can also be mentioned.

  The charge / discharge device 1 can execute various operations (charge operation, self-sustaining operation, grid-connected operation, reserved operation, etc.) related to charging or discharging of the electric vehicle 2. Below, the outline of each operation | movement which the charging / discharging apparatus 1 can perform is demonstrated.

(Charging operation)
The charge operation is an operation mode when the charge / discharge device 1 charges the storage battery of the electric vehicle 2. During the charging operation, AC power is supplied from the building 3 to the transformer 16 of the charge / discharge device 1. The transformer 16 converts the supplied AC power into AC power of another specified voltage, and supplies the converted AC power to the charge / discharge circuit 17. The charge and discharge circuit 17 converts AC power supplied from the transformer 16 into DC power of a prescribed voltage (for example, 400 V) suitable for charging the electric vehicle 2 and connects the DC power after conversion to the electric vehicle 2 The electric vehicle 2 is supplied through the power line 18 a in the charge / discharge cable 18 and the charge / discharge connector 19. Thereby, the storage battery in the electric vehicle 2 is charged.

(Independent operation)
The self-sustaining operation is an operation mode in which the charge / discharge device 1 takes out DC power from the storage battery of the electric vehicle 2 at the time of a power failure, converts this into AC power, and supplies it to the building 3. When a power failure occurs, AC power is not supplied from the commercial power system 4 into the building 3. The charge / discharge device 1 takes out the power stored in the storage battery in the electric vehicle 2 in order to supply power from the power supply source other than the commercial power system 4 into the building 3 at the time of a power failure. It can be converted into electricity and supplied to the building 3. At the time of the self-sustaining operation of the charge and discharge device 1, the circuit breaker in the distribution board 31 has a role of electrically disconnecting the charge and discharge device from the commercial power system 4 (preventing color mixture).

  The charge / discharge device 1 starts a self-sustaining operation by driving a power supply circuit (not shown) using power of a battery (not shown) in the charge / discharge device 1. Thereafter, when the power extracted from the storage battery is converted into alternating current power and the supply of power to the power system in the building 3 is started, the standalone circuit is continued by driving the power supply circuit with the alternating current power.

  At the time of self-sustaining operation, the charge and discharge circuit 17 takes out DC power of a prescribed voltage (for example, 400 V) from the storage battery in the electric vehicle 2 through the charge and discharge cable 18. The charge and discharge circuit 17 converts DC power extracted from the electric vehicle 2 into AC power of a predetermined voltage, and supplies the AC power to the transformer 16. The transformer 16 converts the supplied AC power into AC power of a prescribed voltage (for example, 100 V or 200 V) that can be used in the building 3, and connects the transformer 16 and the distribution board 31 via a power line for AC power. And supplies the secondary side of the distribution board 31 in the building 3. The AC power supplied from the charge / discharge device 1 to the building 3 in this way is supplied to each load 32 via the secondary side of the distribution board 31. Each load 32 operates using AC power supplied from the charge and discharge device 1.

(Network connection operation)
The charge / discharge device 1 can convert the power stored in the storage battery of the electric vehicle 2 into prescribed AC power even during a power failure, and can supply the power into the building where the distribution board 31 is provided. At this time, alternating current power is supplied to the distribution board 31 from both the commercial power system 4 and the charge / discharge device 1. The operating condition of the charge / discharge device 1 when the AC power supply of such an aspect is performed on the building 3 is particularly called grid-connected operation.

(Reserved operation)
The charge / discharge device 1 can start charging operation or grid-connected operation immediately upon receiving an operation start instruction from the user. On the other hand, when the predetermined start condition set in advance in the charge / discharge device 1 is satisfied, the charge / discharge circuit 17 starts the charge sequence or the discharge sequence, and the charge / discharge device 1 is set in advance. It is also possible to execute the charge operation or the grid interconnection operation for causing the charge / discharge circuit 17 to stop the charge sequence or the discharge sequence when the termination condition of is satisfied. The operation mode in which the start and end of the charge sequence or the discharge sequence are controlled based on the establishment of such start and end conditions is hereinafter referred to as a reserved operation.

  For example, in order to cause discharge device 1 to execute the reserved operation, the user can set a time zone for executing the reserved operation to charge / discharge device 1 in advance. When this setting is made, the charge / discharge device 1 automatically executes a designated type of operation (charge operation or grid-connected operation) in a set time zone.

  The execution of such a reserved operation allows the user of the charge / discharge device 1 to receive the following benefits. For example, the user can use the fully charged electric vehicle 2 immediately after waking up by causing the charge / discharge device 1 to execute the reserved operation of the electric vehicle 2 at midnight while sleeping. Therefore, after waking up, the user does not have to wait until charging of the electric vehicle 2 is completed.

  In addition, depending on the content of the power contract, reserved operation can also provide the following advantages. That is, the user causes charge / discharge device 1 to charge electric vehicle 2 at midnight, which is a time zone where electricity rates are cheap, while grid-connected operation to charge / discharge device 1 in the daytime, a time zone where electricity rates are high. Can be run. Thereby, the household electricity bill which a user bears can be reduced.

  In addition, the aspect of a reservation driving | operation is not restricted to what is based on the setting of the time slot mentioned above. Besides, for example, when the charge / discharge device 1 is provided with a plurality of charge / discharge cables 18 and a charge / discharge connector 19 through which a plurality of different electric vehicles 2 can be connected to the charge / discharge device 1 for charging, A mode in which the device 1 sets the order for charging the respective electric vehicles 2 and sequentially charges the electric vehicles 2 for which the charging order has come is also included in the category of the reserved driving. In this aspect, the arrival of the charging order set for a certain electric vehicle 2 corresponds to the establishment of the start condition for starting the reserved operation.

  The charge and discharge device 1 according to the present embodiment has an advantage of being able to execute the reservation operation more reliably than the prior art. Specific methods for realizing this will be described in detail below.

(Flow of processing of reservation operation)
FIG. 2 is a flow chart showing the flow of processing when the charge / discharge device 1 according to the embodiment of the present invention executes the reserved operation. In the following, the case where the charge / discharge device 1 executes a reserved operation for charging will be described as an example, but also when the reserved operation for reserved (reserved grid interconnection operation) is performed, the charge is discharged There is no essential difference in the process flow, just by changing to.

  When the user wants the charge / discharge device 1 to execute the reserved operation, first, the charge / discharge connector 19 of the charge / discharge device 1 is connected to a dedicated charge port provided in the electric vehicle 2 (S1).

  Thereafter, the user operates the input device 11 to select an operation mode to be performed by the charge / discharge device 1. Here, "reserved operation" is selected. In addition, when the reservation operation has been previously set to the charge / discharge device 1 as the operation mode, this selection operation is not necessarily required. When the input unit 12 detects this selection, the input / output unit 12 sets the reserved operation as the operation mode to be executed by the charge / discharge device 1. The user further operates the input device 11 to input a time zone (operation reservation time zone) for causing the charge / discharge device 1 to execute the reservation operation. When the time zone has been set in advance in the charge / discharge device 1, this input operation is not necessarily required. The user inputs at least the time to start the reservation operation and the time to end it. The input unit 12 detects these inputs, and as a result, notifies the reservation operation control unit 20 of the time zone from the input start time to the end time as the reservation operation time zone. The reserved operation control unit 20 sets the notified reserved operation time zone in the charge / discharge device 1.

  For example, when 23:00 is input as the start time of the reserved operation and 5:00 am as the end time, 6 hours from 23:00 to 5:00 am as the operation reservation time zone are set in the charge / discharge device 1 Ru.

  Next, the user presses the start button provided on the input device 11 of the charge / discharge device 1 (S2). The input unit 12 detects this pressing operation. Since the setting relating to the reserved operation is made to the charge / discharge device 1, the input unit 12 receives an instruction to start the reserved operation to the charge / discharge device 1 from the user based on this detection. The input unit 12 notifies the reserved operation control unit 20 and the chargeable state determination unit 21 that the instruction to start the reserved operation has been received.

(Determination of chargeable state)
In the present embodiment, the following condition 1 is set in the charge / discharge device 1 as a condition that can be determined that the charge / discharge circuit 17 is in a state where the electric vehicle 2 can be charged:
Condition 1: The connection confirmation line with the electric vehicle 2 is conducting.

  Based on the notification from the input unit 12 to the control circuit 15, the chargeable state determination unit 21 determines immediately whether the condition 1 is satisfied, that is, before the start time of the reserved operation arrives. Specifically, chargeable state determination unit 21 determines whether a connection confirmation line for confirming connection between charge / discharge connector 19 provided in charge / discharge cable 18 and electric vehicle 2 is conductive or not. It judges (S3).

(Notice of abnormal occurrence)
When S3 is NO, the chargeable state determination unit 21 determines that the charge / discharge circuit 17 is not in the state where the electric vehicle 2 can be charged, and notifies the display unit 14 and the reservation operation control unit 20 to that effect. The display unit 14 generates a message for notifying that an abnormality has occurred based on the notification from the chargeable state determination unit 21, and displays the message on the display panel 13. Thereby, the charge / discharge device 1 notifies the user of the occurrence of abnormality (S4). In addition, the reservation operation control unit 20 cancels the setting of the reservation operation set in the charge / discharge device 1 based on the notification from the chargeable state determination unit 21. As a result, the process shown in FIG. 2 ends. Therefore, the charge / discharge device 1 does not execute the reserved operation.

In the present embodiment, the charge / discharge device 1 displays a message prompting confirmation of the connection state of the charge / discharge connector 19 on the display panel 13 in S4. As a message displayed at this time, for example,
-Confirmation of the connection (fitting) state of the charge / discharge connector 19 with the electric vehicle 2 is sought · Confirmation of the lock state of the charge / discharge connector 19 with respect to the electric vehicle 2 is sought There are various messages such as asking for.

  When the user confirms that the message notifying the occurrence of an abnormality is displayed on the display unit 14 in S4, the user takes an action to eliminate the abnormality. At that time, the message displayed on the display panel 13 can be referred to as appropriate. When the user clears the abnormality, the user can instruct the charge / discharge device 1 to start the reservation operation by pressing the start button again. After this, the process of S3 is performed again. Since the abnormality is eliminated, there is a high possibility that the next S3 will be YES.

(Notification of chargeable status)
On the other hand, when S3 is YES, the chargeable state determination unit 21 determines that the charge and discharge circuit 17 is in the chargeable state, and notifies the display unit 14 and the connector lock control unit 22 to that effect. In response to this notification, the connector lock control unit 22 instructs the charge / discharge circuit 17 to lock the charge / discharge connector 19. In response to this instruction, the charge / discharge circuit 17 locks the charge / discharge connector 19 (S5).

  After S5, the display unit 14 displays a message notifying that the charge / discharge circuit 17 is determined to be in the chargeable state on the display panel 13 based on the notification from the chargeable state determination unit 21. Thereby, the user is notified that the charge / discharge circuit 17 is in the chargeable state (S6). By confirming this notification message through the display panel 13, the user knows that the electric vehicle 2 is connected to the charge / discharge device 1 so that the charge / discharge device 1 can be normally charged. it can. Therefore, the user can leave the charge / discharge device 1 with confidence.

  After S6, the charge / discharge device 1 stands by until the reserved operation is started. Meanwhile, the input unit 12 detects whether or not the stop button provided on the input device 11 is pressed, and based on the result, determines whether the stop button is pressed (S7). If S7 is YES, the input unit 12 notifies the connector lock control unit 22 to that effect. In response to the notification, the connector lock control unit 22 notifies the charge / discharge circuit 17 to release the lock of the charge / discharge connector 19. In response to this notification, the charge / discharge circuit 17 releases the lock of the charge / discharge connector 19 (S8). After S8, the process shown in FIG. 2 ends.

  The stop button is a button for stopping various operations in the charge and discharge device 1. In the present embodiment, the stop button also functions as a button for releasing the lock of the charge / discharge connector 19. As described above, in the present embodiment, since it is not necessary to provide the input device 11 with a dedicated button (dedicated operation unit) for releasing the lock of the charge / discharge connector 19, the configuration of the input device 11 can be simplified. Can.

  When S7 is NO, the reservation operation control unit 20 determines whether the current time is within the reservation operation time zone set in the charge / discharge device 1 (S9). For example, when the current time coincides with the reserved operation start time, S9 becomes YES.

  If S9 is NO, the process shown in FIG. 2 returns to S7. Therefore, the processes of S7 and S9 are repeated until S7 becomes YES. That is, after it is determined that the charge / discharge circuit 17 is in the chargeable state, the charge / discharge device 1 stands by until the set reserved operation start time comes.

  When S9 is YES, the reservation operation control unit 20 instructs the charge and discharge circuit 17 to start the reservation operation. In response to this instruction, the charge / discharge circuit 17 starts a charge sequence for charging the electric vehicle 2 (S10). The charging sequence means a series of processing procedures for charging the electric vehicle 2. In the present embodiment, the charge and discharge circuit 17 starts a charging sequence based on the CHAdeMO (registered trademark) standard for rapid charging of an electric vehicle or the like.

  As described above, in the charge / discharge device 1, charging is not performed until it is determined that the connection confirmation line is conducted (the charge / discharge circuit 17 is in the chargeable state) until the start time of the reserved operation comes. The lock of the discharge connector 19 is maintained. As a result, after the user leaves the charge / discharge device 1, the third party can not pull out the charge / discharge connector 19 from the electric vehicle 2 by mistake. Therefore, since the charge / discharge connector 19 can be normally connected to the electric vehicle 2 until the reservation operation is started, the charge / discharge device 1 can execute the reservation operation more reliably.

  In addition, since the lock mechanism of the charge / discharge connector 19 is a latch type, electric power is required at the moment of the lock operation, but the electric power for maintaining the lock state once established is unnecessary.

(Flow of charging sequence)
The flow of the charging sequence performed between the charge and discharge circuit 17 and the electric vehicle 2 will be described. After the start of the charging sequence, first, the charge / discharge circuit 17 transmits a charge start signal to the electric vehicle 2 through the dedicated signal line 18 b for transmitting the charge start. When the electric vehicle 2 receives the charge start signal, it recognizes that the charge operation by the charge / discharge device 1 has been started, and can communicate the parameters such as the maximum voltage and capacity of the storage battery via the signal line 18b for CAN communication. To the charge / discharge circuit 17.

  Based on the parameters received from the electric vehicle 2, the charge / discharge circuit 17 confirms whether the electric vehicle 2 is an electric vehicle 2 that can be charged by the charge / discharge device 1. If confirmed, the charge / discharge circuit 17 transmits parameters such as the maximum output voltage and the maximum output current of the charge / discharge device 1 to the electric vehicle 2 by CAN communication. The electric vehicle 2 determines the compatibility with itself based on the received parameters, and if there is no problem, transmits the charge permission signal to the charge / discharge device 1 through the dedicated signal line 18b for transmitting the permission of charge. Do.

  When the charge / discharge device 1 receives the charge start signal, it recognizes that the electric vehicle 2 permits charging, and after locking the charge / discharge connector 19, an outlet circuit (not shown) for supplying current to the electric vehicle 2 Test for no short circuit or ground fault. If there is no abnormality, the charge / discharge circuit 17 transmits a charge start signal to the electric vehicle 2 through a dedicated signal line 18b for notifying that all the preparation on the charge / discharge device 1 side is completed. This completes preparation for charging. Thereafter, charging of the storage battery under control of the electric vehicle 2 is started.

  After S10, the charge / discharge circuit 17 sequentially advances each processing procedure included in the charging sequence. Since the charge / discharge connector 19 is already locked at the arrival of the reserved operation start time, the charge / discharge circuit 17 starts the charging sequence in a state where the charge / discharge connector 19 is locked. Then, when the charge / discharge circuit 17 transmits the charge start signal for notifying that all the preparation of the charge / discharge device 1 is completed after the insulation test is completed, the charge preparation is completed (S11). After completing the preparation for charging, the charge and discharge circuit 17 starts charging (current supply) to the electric vehicle 2 (S12).

(Forced termination of reservation operation)
The input unit 12 detects whether or not the stop button provided on the input device 11 is pressed while the electric vehicle 2 is charging, and determines based on the result whether the stop button is pressed (S13) . If S13 is YES, the input unit 12 notifies the control circuit 15 to that effect. When the notification is received, the control circuit 15 instructs the charge / discharge circuit 17 to stop the charge of the electric vehicle 2. When this instruction is received, the charge / discharge circuit 17 stops charging (current supply) of the electric vehicle 2 (S14). After stopping the charge, the charge / discharge circuit 17 starts an end procedure for ending the charge sequence. The charge / discharge circuit 17 proceeds to a stage where the lock of the charge / discharge connector 19 can be released, and then unlocks the charge / discharge connector 19 (S15). Thereafter, the charge / discharge circuit 17 ends the charge sequence (S16). Thus, the process shown in FIG. 2 ends.

  As described above, if the user presses the stop button of the charge / discharge device 1 during the execution of the reservation operation, the execution of the reservation operation is immediately stopped and the lock of the charge / discharge connector 19 is released. Thereafter, the user can disconnect the charge / discharge connector 19 from the electric vehicle 2 and get on the electric vehicle 2.

  When S13 is NO, the reservation operation control unit 20 determines whether the current time is out of the reservation operation time zone (S17). Specifically, the charge / discharge circuit 17 determines whether the current time is earlier than the reserved operation start time or after the reserved operation end time. For example, when the current time coincides with the reserved operation end time, S17 is YES.

  If S17 is NO, the process shown in FIG. 2 returns to S13, and the charge / discharge circuit 17 continues charging of the electric vehicle 2. Thus, the process shown in FIG. 2 repeats S13 and S17 until S17 becomes YES. That is, the charge / discharge device 1 continues charging of the electric vehicle 2 after the start of the reserved operation until the stop button is not pressed and the reserved operation end time comes.

(Normal end of reserved operation)
When S17 is YES, the reservation operation control unit 20 notifies the charge / discharge circuit 17 and the connector lock control unit 22 to that effect. The connector lock control unit 22 instructs the charge / discharge circuit 17 to maintain the lock of the charge / discharge connector 19 based on the notification. On the other hand, the charge / discharge circuit 17 stops charging of the electric vehicle 2 based on the notification from the reserved operation control unit 20 (S18). After stopping the charge, the charge / discharge circuit 17 starts an end procedure for ending the charge sequence. However, based on the instruction from the charge / discharge connector 19, the charge / discharge circuit 17 proceeds to the stage where the lock of the charge / discharge connector 19 can be released, and then maintains the charge / discharge connector 19 without releasing S19). Thereafter, the charge / discharge circuit 17 ends the charge sequence while maintaining the lock of the charge / discharge connector 19 (S20). Thus, the reserved operation is temporarily ended.

  When S17 is YES, the reservation operation control unit 20 maintains the setting of the reservation operation. Therefore, after S20, the process shown in FIG. 2 returns to S7. As a result, after the end of the reservation operation, the charge / discharge device 1 shifts itself to the standby state again until the start time of the next reservation operation comes. As a result, power consumption for maintaining the charge preparation state for charging the electric vehicle 2 becomes unnecessary until the next reserved operation is started, so the power consumption in the charge / discharge device 1 can be reduced. Can. Furthermore, the consumption of the storage battery of the electric vehicle 2 can be prevented.

  Furthermore, when the reserved operation is normally completed, the lock of the charge / discharge connector 19 is maintained after the end of the charging sequence. Since the lock of the charge / discharge connector 19 is performed by the latch mechanism, power is consumed when the lock is performed, but power consumption for maintaining the locked state is unnecessary. In the charge / discharge device 1, since the lock of the charge / discharge connector 19 is maintained after the end of the reserved operation, a third party can not pull out the charge / discharge connector 19 from the electric vehicle 2 by mistake. Therefore, since charge / discharge connector 19 can continue to be normally connected to electric vehicle 2 until the next reservation operation is started, charge / discharge device 1 executes reservation operation in the next time zone more reliably. Can.

  Although not particularly illustrated in FIG. 2, the charge / discharge circuit 17 sets the charge rate of the electric vehicle 2 to a preset target charge rate (specified value) before the reserved operation end time arrives. When reached, the charging of the electric vehicle 2 may be stopped. Alternatively, the charging of the electric vehicle 2 may be stopped when a predetermined time has elapsed since the start of the reserved operation before the reserved operation end time arrives. Also in this case, the reserved operation is normally ended by executing the processes of S18 to S20.

(Re-execution of chargeable state judgment)
The charge / discharge device 1 may determine again whether the charge / discharge circuit 17 is in the chargeable state before the start time of the reserved operation comes after the standby state. That is, the process of FIG. 2 may return to S3 instead of S7 if S9 is NO, after the charge / discharge device 1 is in the standby state and a predetermined time has elapsed. In this case, the chargeable state determination unit 21 confirms again whether the connection confirmation line is conductive (S3). When S3 is YES, the charge / discharge device 1 notifies the user that the charge / discharge circuit 17 is in the chargeable state while maintaining the lock of the charge / discharge connector 19. On the other hand, in the case of NO, the user is notified of the occurrence of an abnormality. At that time, the lock of the charge / discharge connector 19 may be forcibly (automatically) released, or may be released after the pressing operation of the stop button is detected.

  When the charge / discharge device 1 stands by before the start of the reserved operation, the user is likely to be at a place away from the charge / discharge device 1. For example, it is assumed that the user is in the building 3 or is out. Therefore, instead of displaying a notification message on the display panel 13 for notification to the user based on the determination result of the chargeable state during standby of the reserved operation, the charge / discharge device 1 is a user who is away from the charge / discharge device 1 The notification can be made using a means that can be notified.

  For example, when the charge / discharge device 1 is connected to an indoor display panel (not shown) installed in the building 3, the charge / discharge device 1 displays a notification message on the indoor display panel. Alternatively, when the charge / discharge device 1 has a wireless communication function, the charge / discharge device 1 transmits an e-mail including a notification message in the text to the e-mail address of the user.

  Based on these notifications, the user can know again, before the start of the reserved operation, whether the occurrence of a situation that hinders the execution of the reserved operation has occurred. Therefore, for example, when a notification of occurrence of an abnormality is received, it is possible to appropriately take measures to remove the abnormality before the start of the reserved operation. As a result, although an abnormality did not occur immediately after pressing the start button, a situation where a reserved operation is eventually not performed because some abnormality has occurred while the charge / discharge device 1 is waiting thereafter It can prevent.

  In addition, immediately after the start button is pressed, the charge / discharge device 1 determines that the connection confirmation line is conducting (the charge / discharge circuit 17 is in the chargeable state), and then enters the standby state, and then makes a reservation. The determination as to whether or not the connection confirmation line is conductive may be periodically performed a plurality of times until the start time of operation comes.

  In addition, the user has both a time zone for causing the charge / discharge device 1 to perform the charging operation (charge reservation time zone) and a time zone for causing the charge / discharge device 1 to perform the grid interconnection operation (discharge reservation time zone). The charge / discharge device 1 can be set. However, it is necessary to set so that the respective time zones do not overlap. In this case, after the charge / discharge device 1 is in the standby state while maintaining the lock of the charge / discharge connector 19, when the charge reservation time zone comes, the charge (charge operation) of the electric vehicle 2 is started, When the time zone arrives, the electric vehicle 2 starts discharging (grid-connected operation). Therefore, for example, after completion of the reserved charging, the charging / discharging device 1 is in a standby state while maintaining the lock of the charge / discharge connector 19, and then starts the reserved discharge when the reserved discharge time zone comes, It becomes possible to stand by again after the discharge period, and then to start the reserved charge again when the reserved charging period comes again.

Second Embodiment
Second Embodiment A second embodiment according to the present invention will be described below with reference to FIG. The configuration of the charge / discharge device 1 according to the present embodiment is the same as that of the first embodiment. However, unlike the first embodiment, the charge / discharge circuit 17 can charge the electric vehicle 2 only when the condition 1 is satisfied (determination of the presence of the connection confirmation line is made), unlike the first embodiment. It does not judge that it is in the state. After confirming that the connection confirmation line is conductive, the charge / discharge device 1 executes the charge sequence before starting the reserved operation, and the charge / discharge circuit 17 can charge the electric vehicle 2 during the execution. It is determined whether at least one of the other conditions 2 to 4 that can be considered to be true is further satisfied. Then, after Condition 1 is satisfied, when at least one of Conditions 2 to 4 is further satisfied, it is determined that the charge / discharge circuit 17 is in a state where the electric vehicle 2 can be charged.

(Flow of reservation operation)
FIG. 3 is a flow chart showing the flow of processing when the charge / discharge device 1 according to the embodiment of the present invention executes the reserved operation. Although the case where the charging / discharging device 1 performs the reserved operation for charging will be described as an example below, in the case of the reserved operation for the discharging (reserved grid interconnection operation), the charging is changed to the discharging only, There is no essential difference in the process flow.

  Since S1 to S4 in FIG. 3 are the same as S1 to S4 in FIG. 2, the detailed description will be omitted. If S3 is YES, that is, if the condition 1 is satisfied (the connection confirmation line is determined to be conductive), the chargeable state determination unit 21 notifies the charge / discharge circuit 17 to start the charge sequence. Do. Upon receiving this notification, the charge / discharge circuit 17 immediately starts the charge sequence, that is, before the start time of the reserved operation comes (S21). This charging sequence is not for performing charging based on the setting of the reserved driving, but for determining in advance before the start of the reserved driving whether the charge / discharge circuit 17 is in a state capable of charging the electric vehicle 2. To be executed.

  After starting the charging sequence in S21, the charging / discharging circuit 17 sequentially executes each processing procedure included in the charging sequence. At this time, the charge / discharge circuit 17 appropriately notifies the chargeable state determination unit 21 of information regarding the success or failure of each processing procedure at an intermediate stage of the definition in the charging sequence. Based on the notification from the charge / discharge circuit 17, the chargeable state determination unit 21 determines whether the charge / discharge circuit 17 can charge the electric vehicle 2 (S22).

In the present embodiment, there are a plurality of conditions under which the charge / discharge circuit 17 can determine whether the electric vehicle 2 can be charged during the execution of the charging sequence. In particular,
Condition 2: CAN communication with the electric vehicle 2 is established. Condition 3: Reception of the charge permission signal from the electric vehicle 2 Condition 4: The fact that the electric vehicle 2 could be actually charged can be mentioned. The user can set in advance the charge / discharge device 1 as to which of the conditions 2 to 4 the success or failure of the charge / discharge device 1 is to be determined as the determination condition of the chargeable state. The chargeable state determination unit 21 determines the presence or absence of the chargeable state by determining whether the set conditions are met or not. Details of the determination of the chargeable state based on the conditions 2 to 4 will be described below.

(In the case of condition 2)
When the condition 2 is set to the charge / discharge device 1, the charge / discharge circuit 17 notifies the chargeable state determination unit 21 of the result of attempting to establish CAN communication with the electric vehicle 2 after the start of the charge sequence. The chargeable state determination unit 21 succeeds in establishing CAN communication with the electric vehicle 2 based on the result of attempting to establish CAN communication with the electric vehicle 2 notified from the charge / discharge circuit 17 It is determined whether or not.

  When the determination result is NO, the chargeable state determination unit 21 determines that the charge / discharge circuit 17 is not in the chargeable state (NO in S22). On the other hand, when the condition 2 is set as the determination condition of the chargeable state, the chargeable state determination unit 21 determines that the charge / discharge circuit 17 is in the chargeable state when the determination result is YES (S22). YES).

  During execution of the charging sequence, the charge / discharge circuit 17 establishes CAN communication with the electric vehicle 2 before the charge / discharge circuit 17 receives the charge permission signal. Also, the charge / discharge circuit 17 receives the charge permission signal before the charge / discharge circuit 17 can actually charge the electric vehicle 2. Therefore, the determination regarding the condition 2 is always performed before the determination regarding the conditions 3 and 4. In other words, when the condition 2 is set to the charge / discharge device 1, the determination of the conditions 3 and 4 is unnecessary, so the chargeable state determination unit 21 determines whether the charge / discharge circuit 17 is in the chargeable state. Can be determined as soon as possible (example of the first embodiment).

(In the case of condition 3)
When condition 3 is set to charge / discharge device 1, charge / discharge circuit 17 can be charged only when condition 2 is satisfied (that is, CAN communication with electric vehicle 2 is established). It does not judge that it is in the state. After the CAN communication with the electric vehicle 2 is established, the charge / discharge circuit 17 waits for a fixed time until receiving a charge permission signal from the electric vehicle 2. The charge / discharge circuit 17 notifies the chargeable state determination unit 21 of the reception result of the charge permission signal. Based on the notified result, the chargeable state determination unit 21 determines whether the charge / discharge circuit 17 has received the charge permission signal.

  When the determination result is NO, the chargeable state determination unit 21 determines that the charge / discharge circuit 17 is not in the chargeable state (NO in S22). On the other hand, when the condition 3 is set as the determination condition of the chargeable state, the chargeable state determination unit 21 determines that the charge and discharge circuit 17 is in the chargeable state when the determination result is YES (S22). YES). In this case, since the electric vehicle 2 permits charge and discharge to the charge and discharge circuit 17, the charge and discharge circuit 17 is more electrically than in the case of condition 1 and condition 2 when such permission is not obtained. Whether or not the vehicle 2 is in a chargeable state can be determined more reliably.

(In the case of condition 4)
When the condition 4 is set to the charge / discharge device 1, the charge / discharge circuit 17 can be charged only when the condition 3 is satisfied (that is, the charge permission signal is received from the electric vehicle 2). It does not judge that it is in the state. After receiving the charge permission signal from the electric vehicle 2, the charge / discharge circuit 17 further proceeds the charging sequence to lock the charge / discharge connector 19 to the electric vehicle 2, thereby completing the preparation for charging. The charge / discharge circuit 17 then tries to actually charge the electric vehicle 2 and notifies the chargeable state determination unit 21 of the result (success or failure of charge). The chargeable state determination unit 21 determines whether the charge and discharge circuit 17 has succeeded in charging the electric vehicle 2 based on the notified result.

  When the determination result is NO, the chargeable state determination unit 21 determines that the charge / discharge circuit 17 is not in the chargeable state (NO in S22). On the other hand, when the condition 4 is set as the determination condition of the chargeable condition, the chargeable condition determination unit 21 determines that the charge / discharge circuit 17 is in the chargeable condition if the determination result is YES (S22). YES). In this case, since it has been confirmed that the electric vehicle 2 is actually successfully charged, it can be most surely confirmed whether the charge / discharge device 1 is in a state capable of actually charging the electric vehicle 2.

(Notice of abnormal occurrence)
When S22 is NO, the chargeable state determination unit 21 determines that the charge / discharge circuit 17 is not in the state where the electric vehicle 2 can be charged, and to that effect, the display unit 14, the reserved operation control unit 20, and the charge / discharge circuit Notify 17 In response to this notification, the charge / discharge circuit 17 ends the charging sequence (S23). In S22, when the determination of the condition 2 or the determination of the condition 3 is performed, the charge / discharge connector 19 is not locked to the electric vehicle 2. Therefore, the charge and discharge circuit 17 ends the charge sequence without locking the charge and discharge connector 19 as it is. On the other hand, when the determination of Condition 4 is performed in S22, the charge / discharge connector 19 is locked when S22 becomes NO. In this case, the charge / discharge circuit 17 may end the charge sequence after releasing the lock of the charge / discharge connector 19 or end the charge sequence while maintaining the lock of the charge / discharge connector 19 and thereafter When the pressing operation of the stop button is detected, the lock of the charge / discharge connector 19 may be released.

  After S23, the display unit 14 generates a message for notifying that an abnormality has occurred based on the notification from the chargeable state determination unit 21, and displays the message on the display panel 13. Thereby, the charge / discharge device 1 notifies the user of the occurrence of abnormality (S4). In addition, the reservation operation control unit 20 cancels the setting of the reservation operation set in the charge / discharge device 1 based on the notification from the chargeable state determination unit 21. As a result, the process shown in FIG. 3 ends. Therefore, the charge / discharge device 1 does not execute the reserved operation.

  In the present embodiment, the display unit 14 generates an abnormality notification message according to the type of condition set in the charge / discharge device 1 and displays the message on the display panel 13. Below, the specific example of the message for every condition is each demonstrated.

(In the case of condition 2)
When it is determined that the charge / discharge circuit 17 is not in the chargeable state because the charge / discharge circuit 17 can not establish CAN communication with the electric vehicle 2, the display unit 14 prompts confirmation of the connection state of the charge / discharge connector 19. The message is displayed on the display panel 13. As a message displayed at this time, for example,
· Ask for confirmation of the connection (fitting) state of charge / discharge connector 19 to electric vehicle 2 · Ask for confirmation of lock state of charge / discharge connector 19 for electric vehicle 2 · Whether or not the ordinary charge cable is connected to electric vehicle 2 Various messages such as asking for confirmation of

(In the case of condition 3)
The display unit 14 prompts the confirmation of the state of the electric vehicle 2 when it is determined that the charge / discharge circuit 17 is not in the chargeable state because the charge / discharge circuit 17 can not receive the charge / discharge permission signal from the electric vehicle 2 Is displayed on the display panel 13. As a message displayed at this time, for example,
-Asks for confirmation whether cable for performing normal charging is connected to electric vehicle 2-Asks whether confirmation for ordinary charging in electric vehicle 2 is entered-Driving of air conditioner in electric vehicle 2 Asking for confirmation of whether or not reservation is made ・ Various messages such as asking for confirmation of whether or not the ignition of the electric vehicle 2 is turned on may be mentioned. If the content of the abnormality at the time of connection is clear, the display unit 14 may display a countermeasure on the display panel 13 for removing the abnormality. The normal charging is charging of the electric vehicle 2 using a cable (AC cable) for transmitting AC power to the electric vehicle 2.

(In the case of condition 4)
When it is determined that the charge / discharge circuit 17 is not in the chargeable state because the charge / discharge circuit 17 can not actually charge the electric vehicle 2, the display unit 14 can not be charged because the charge / discharge device 1 or A message according to which of the electric vehicles 2 is present is displayed on the display panel 13. As a message displayed at this time, for example,
・ When an abnormality occurs in the charge / discharge device 1, convey that effect ・ When the SOC (state of charge, State of Charge) reaches the charge upper limit capacity, convey that effect ・ When an abnormality occurs in the electric vehicle 2 , Tell that.

-When a normal stop instruction is received from the electric vehicle 2, various messages, such as notifying that, are mentioned. If the content of the abnormality that occurs when the charge / discharge device 1 attempts to charge the electric vehicle 2 is clear, the display unit 14 may display on the display panel 13 a countermeasure for removing the abnormality.

  On the other hand, when S22 is YES, the charge and discharge circuit 17 locks the charge and discharge connector 19 (S24). When condition 4 is set as the determination condition of the chargeable state, the charge / discharge connector 19 is already locked to the electric vehicle 2 before S22 becomes YES. Therefore, the lock of the charge / discharge connector 19 in S24 is not necessarily required. The charge / discharge circuit 17 may lock the charge / discharge connector 19 again in S24, or may not additionally control the lock of the charge / discharge connector 19 (lock maintenance). As described above, even when any of the conditions 2 to 4 is set, it is ensured that the charge / discharge connector 19 is always locked to the electric vehicle 2 after the determination of the chargeable state is completed.

  After S24, the charge and discharge circuit 17 starts an end procedure for ending the charge sequence. However, the charge / discharge circuit 17 proceeds to the stage where the lock of the charge / discharge connector 19 can be released, and then maintains the charge / discharge connector 19 as it is without releasing the lock (S25). Thereafter, the charge / discharge circuit 17 ends the charge sequence while maintaining the lock of the charge / discharge connector 19 (S26). When the determination of Condition 4 is performed in S22, the charge / discharge circuit 17 first ends the charge of the electric vehicle 2, and then starts the end procedure of the charge sequence.

  After S26, the display unit 14 displays a message notifying that the charge / discharge circuit 17 is determined to be in the chargeable state on the display panel 13 based on the notification from the chargeable state determination unit 21. Thereby, the user is notified that the charge / discharge circuit 17 is in the chargeable state (S6). Since S6 to S20 of FIG. 3 are the same as S6 to S20 of FIG. 2, the detailed description will be omitted.

  As described above, the charge / discharge device 1 according to this embodiment determines that the charge / discharge circuit 17 is in the chargeable state during the execution of the charge sequence before the start of the reservation operation, and then the start time of the reservation operation comes. Until then, the lock of the charge and discharge connector 19 is maintained. As a result, as in the first embodiment, after the user leaves the charge / discharge device 1, the third party can not pull out the charge / discharge connector 19 from the electric vehicle 2 by mistake. Therefore, since the charge / discharge connector 19 can be normally connected to the electric vehicle 2 until the reservation operation is started, the charge / discharge device 1 can execute the reservation operation more reliably.

  In addition, when it is determined that the charge / discharge circuit 17 is in the chargeable state during execution of the charge sequence before the start of the reserved operation, the charge / discharge device 1 according to the present embodiment charges while maintaining the lock of the charge / discharge connector 19 End the sequence and then transition to the standby state. As a result, power consumption for maintaining the charge preparation state for charging the electric vehicle 2 is not required until the reserved operation is started, so that the power consumption in the charge / discharge device 1 can be reduced. . Furthermore, the consumption of the storage battery of the electric vehicle 2 can be prevented.

(Re-execution of chargeable state judgment)
The charge / discharge device 1 may determine again whether the charge / discharge circuit 17 is in the chargeable state before the start time of the reserved operation comes after the standby state. That is, the process of FIG. 3 may return to S3 instead of S7 when S9 is NO, after the charge / discharge device 1 is in the standby state and a predetermined time has elapsed. In this case, the chargeable state determination unit 21 confirms the presence or absence of conduction of the connection confirmation line (S3). If S3 is YES, the charge / discharge circuit 17 restarts the charging sequence for determining the chargeable state (S21). The chargeable state determination unit 21 determines again whether or not the charge / discharge circuit 17 is in the chargeable state based on various notifications from the charge / discharge circuit 17 during execution of the charge sequence again (S22). If this determination is YES, the charge / discharge device 1 ends the charge sequence while maintaining the lock of the charge / discharge connector 19 and notifies the user that the charge / discharge circuit 17 is in the chargeable state. On the other hand, in the case of NO, the charging sequence is ended, and the occurrence of abnormality is notified to the user.

  The chargeable state determination unit 21 may skip the process of determining whether the connection confirmation line is conductive. In this case, if the user presses the start button, the charge / discharge circuit 17 charges in advance to determine whether or not the charge / discharge circuit 17 can charge the electric vehicle 2 before the start of the reserved operation. Start the sequence immediately. Then, the chargeable state determination unit 21 determines whether the charge / discharge circuit 17 can charge the electric vehicle 2 based on various notifications from the charge / discharge circuit 17 during the execution of the charge sequence.

(Various forms of equipment)
In the first and second embodiments, an example of the charge / discharge device 1 capable of performing both charging of the electric vehicle 2 and discharging from the electric vehicle 2 has been described. However, embodiments of the present invention are not limited to this. That is, the present invention is also realized as various power conversion devices capable of charging or discharging the electric vehicle 2. More specifically, a charging device capable of charging only of charging and discharging of electric vehicle 2 and a discharging device capable of discharging only of charging and discharging of electric vehicle 2 are also included in the technical scope of the present invention. Be

[Example of software implementation]
The control block of the charge / discharge device 1 (in particular, the input unit 12, the display unit 14, the reserved operation control unit 20, the chargeable state determination unit 21, the connector lock control unit 22) is a logic formed in an integrated circuit (IC chip) or the like. It may be realized by a circuit (hardware) or may be realized by software using a CPU (Central Processing Unit). In the latter case, the charge / discharge device 1 is a CPU that executes instructions of a program that is software that implements each function, and a ROM (Read Only Memory) in which the program and various data are readably recorded by a computer (or CPU). Alternatively, a storage device (these are referred to as “recording media”), a RAM (Random Access Memory) for developing the program, and the like are provided. The object of the present invention is achieved by the computer (or CPU) reading the program from the recording medium and executing the program. As the recording medium, “a non-transitory tangible medium”, for example, a tape, a disk, a card, a semiconductor memory, a programmable logic circuit, etc. can be used. The program may be supplied to the computer via any transmission medium (communication network, broadcast wave, etc.) capable of transmitting the program. The present invention can also be realized in the form of a data signal embedded in a carrier wave, in which the program is embodied by electronic transmission.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. New technical features can also be formed by combining the technical means disclosed in each embodiment.

  For example, the charge / discharge device 1 may be a device different from the CHAdeMO standard and compatible with another standard (such as the COMBO standard) for charging or discharging the storage battery of the electric vehicle 2. In this case, the charge and discharge cable 18 and the charge and discharge connector 19 are cables and connectors corresponding to the other standards. In addition, the charge and discharge circuit 17 executes a charge sequence (or discharge sequence) corresponding to the other standard. In addition, when the charge / discharge device 1 is a device corresponding to another standard, the electric vehicle 2 to be charged or discharged by the charge / discharge device 1 also needs to correspond to the other standard.

1 Charge / discharge device (power control device)
2 Electric car (vehicle)
3 building 4 commercial power grid 11 input device 12 input unit (operation unit)
13 Display Panel 14 Display Unit (Status Notification Unit, Abnormality Notification Unit)
15 control circuit 16 transformer 17 charge / discharge circuit (power control unit)
18 charge and discharge cable (cable)
18a power line 18b signal line 20 reserved operation control unit 21 chargeable state determination unit (determination unit)
22 Connector lock control unit (lock control unit)
31 distribution board 32 load

Claims (13)

A power control apparatus for charging or discharging a storage battery mounted on a vehicle, comprising:
A cable for charging or discharging the storage battery;
A connector provided at one end of the cable and connected to the vehicle;
A power control unit for charging or discharging the storage battery through the cable and the connector;
Whether the power control unit can charge or discharge the storage battery before a prescribed start condition for causing the power control unit to start a series of processing procedures for charging or discharging the storage battery is satisfied and determine tough you determine whether or not,
The connector is kept locked in the vehicle from when it is determined that the power control unit can charge or discharge the storage battery until the start condition of the regulation is satisfied. And a lock control unit ,
The power control unit starts a series of processing procedures for charging or discharging the storage battery before the start condition for causing the power control unit to start charging or discharging the storage battery is satisfied, and further, A power control apparatus characterized by terminating the series of processing procedures when it is determined that the power control unit is in a state capable of charging or discharging the storage battery while performing the processing procedures of (1) . When the communication between the power control unit and the vehicle is established while the power control unit is executing the series of processing procedures, the determination unit makes the power control unit chargeable or dischargeable of the storage battery. If it is determined that the power control unit does not establish communication with the vehicle while the power control unit is executing the series of processing procedures, the power control unit determines that the storage battery can not be charged. the power control apparatus according to claim 1, characterized in that. When the power control unit receives a signal for permitting charge or discharge from the vehicle while the power control unit is executing the series of processing procedures, the determination unit may charge the storage battery or If it is determined that the electric power control unit is in the dischargeable state, while the electric power control unit does not receive a signal for permitting charging or discharging from the vehicle while the electric power control unit is executing the series of processing procedures, the electric power The power control apparatus according to any one of claims 1 and 2 , wherein the control unit determines that the storage battery is not in a chargeable or dischargeable state. The determination unit may charge the storage battery when the power control unit can actually charge or discharge the vehicle while the power control unit is executing the series of processing procedures. Or when the power control unit can not actually charge or discharge the vehicle while the power control unit is performing the series of processing procedures. The power control apparatus according to any one of claims 1 to 3 , wherein the power control unit determines that the storage battery can not be charged or discharged. The power control unit restarts the series of processing procedures between the end of the series of processing procedures and the establishment of the defined start condition.
The determination unit is characterized by again determining whether the power control unit is in a state where the storage battery can be charged or discharged while the power control unit is executing the series of processing procedures again. The power control device according to any one of claims 1 to 4 . A connection confirmation line is provided in the cable to confirm the connection between the vehicle and the connector,
The determination unit determines that the power control unit is capable of charging or discharging the storage battery when the connection confirmation line is conductive, and when the connection confirmation line is not conductive. The power control apparatus according to any one of claims 1 to 5 , wherein the power control unit determines that the storage battery can not be charged. It further comprises a reception unit for receiving an instruction for setting the above-mentioned prescribed condition,
The determination unit, when the instruction is accepted, any one of claim 1 to 6, the power control unit and judging whether the chargeable or dischargeable state the battery The power control device according to claim 1. The apparatus according to any one of claims 1 to 7 , further comprising a state notification unit for notifying that the power control unit is capable of charging or discharging the storage battery. The power control device according to claim 1. If the power control unit is not determined to be in the chargeable or dischargeable state the storage battery, according to claim, characterized in that an abnormality has further comprising an abnormality occurrence notification unit for notifying of the occurrence 1-8 The power control device according to any one of the above. An operation unit for stopping charging or discharging of the power control device;
And a detection unit that detects an operation on the operation unit.
In the lock control unit, the operation unit is pressed after it is determined that the power control unit can charge or discharge the storage battery, and the condition defined above is satisfied. The power control apparatus according to any one of claims 1 to 9 , wherein when a lock is detected, the lock of the connector with respect to the vehicle is released. The power control apparatus according to any one of claims 1 to 10 , wherein the prescribed start condition is that the current time coincides with the prescribed start time. The power control unit stops charging or discharging of the storage battery when a prescribed termination condition is satisfied,
12. The lock control unit according to any one of claims 1 to 11 , wherein the connector is kept locked in the vehicle after the power control unit stops charging or discharging the storage battery. The power control device according to claim 1. The specified termination condition is that the current time coincides with the specified termination time, that the charge rate of the storage battery has reached the prescribed value, and the prescribed time has elapsed since the prescribed start condition was established. The power control apparatus according to claim 12 , wherein the power control apparatus is at least one of the following.