JP7136760B2 - Emergency power supply system, emergency power supply method, and program - Google Patents

Description

The present invention relates to an emergency power supply system, an emergency power supply method, and a program.

2. Description of the Related Art There is known a system that supplies power to a plurality of evacuation shelters using power supply vehicles such as electric vehicles that are registered as vehicles that supply power when there is a power shortage due to a disaster (see, for example, Patent Document 1).

Japanese Patent Application Laid-Open No. 2017-112806

However, in the conventional technology, the power-supplied vehicles are individually managed, and the power that can be supplied cannot be efficiently supplied to the necessary facilities and the like.

The present invention has been made in consideration of such circumstances, and provides an emergency power supply system, an emergency power supply method, and a program capable of efficiently supplying power from an on-vehicle battery in the event of a power failure. One of the purposes is to provide

An emergency power supply system, an emergency power supply method, and a program according to the present invention employ the following configuration.
(1) An emergency power supply system according to one aspect of the present invention includes a charging/discharging device that charges and discharges a battery mounted on a vehicle, and a management device that controls the charging/discharging device. The management device includes a detection unit that detects that power supply from a power system has stopped, an acquisition unit that acquires power information of the battery, and a power supply from the power system that is stopped by the detection unit. a determination unit that determines at least one power supply target based on the obtained power information and a priority set in advance for each power supply target when a stop is detected; and a control unit that controls the charging/discharging device so that the accumulated power is supplied to the determined power supply target.

Aspect (2) is that in the emergency power supply system according to aspect (1), the control unit further performs control to restrict movement of the vehicle.

Aspect (3) is that the emergency power supply system according to aspect (1) or (2) further includes a notification unit that notifies a user of the vehicle that the battery is used as a power supply source. is provided.

Aspect (4) is the emergency power supply system according to any one of aspects (1) to (3) above, wherein the determination unit determines the at least one power supply target in descending order of priority. It is a thing.

Aspect (5) is the emergency power supply system according to any one of aspects (1) to (4) above, wherein after determining the first power supply target, the determination unit supplies the first power calculating the remaining amount of power that can be supplied by the battery based on the required power amount of the supply target, and determining the second power supply target based on the priority if the calculated remaining amount has surplus power is.

Aspect (6) is the emergency power supply system according to any one of aspects (1) to (5) above, wherein the acquisition unit is connected to the charging/discharging device installed in each of a plurality of parking lots. The determination unit obtains a plurality of the power information of the vehicle that has been obtained, calculates the total amount of suppliable power using the plurality of the obtained power information, and calculates the total amount and the priority based on the priority to determine at least one power supply target.

(7) An emergency power supply method according to another aspect of the present invention, wherein the computer detects that the power supply from the power system has stopped, and supplies power information of a battery mounted on the vehicle connected to the charging/discharging device. and when it is detected that the power supply from the power system has stopped, based on the obtained power information and the priority set in advance for each power supply target, at least one power A power supply target is determined, and the charging/discharging device is controlled so that the power accumulated in the battery is supplied to the determined power supply target.

(8) A program according to another aspect of the present invention causes a computer to detect that power supply from a power system has stopped, acquire power information of a battery mounted on a vehicle connected to a charging/discharging device, When it is detected that the power supply from the power system has stopped, at least one power supply target is determined based on the obtained power information and a priority set in advance for each power supply target. The charging/discharging device is controlled so that the power stored in the battery is supplied to the determined power supply target.

According to (1) to (8), when it is detected that the power supply from the power system has stopped, based on the acquired power information and the priority set in advance for each power supply target determining at least one power supply target, and controlling the charging/discharging device so that the power accumulated in the battery is supplied to the determined power supply target, thereby efficiently supplying power from the on-vehicle battery in the event of a power failure. can be done systematically.

According to (2), it is possible to reliably supply electric power from the vehicle-mounted battery by performing control to restrict the movement of the vehicle.

According to (3), furthermore, by notifying the user of the vehicle that the battery will be used as the power supply source, the user can grasp the situation of the vehicle.

According to (4), by determining at least one power supply target in descending order of priority, it is possible to preferentially supply power to a facility or the like that requires power during a power outage.

According to (5), after determining the first power supply target, the remaining amount of power that can be supplied by the battery is calculated based on the required power amount of the first power supply target, and the calculated remaining power is the remaining capacity. If there is, it is possible to effectively supply power to a plurality of facilities or the like by determining the second power supply target based on the priority.

According to (6), a plurality of pieces of electric power information of vehicles connected to charging/discharging devices installed in each of a plurality of parking lots are acquired, and the total amount of suppliable electric power is calculated using the acquired pieces of electric power information. By determining at least one power supply target based on the calculated total amount and priority, power can be efficiently supplied from the batteries of vehicles parked in a plurality of parking lots.

It is a figure which shows the outline of the use environment of the emergency power supply system S which concerns on embodiment at the time of normal. It is a figure which shows the outline of the use environment at the time of a power failure of the emergency power supply system S which concerns on embodiment. It is a figure which shows an example of the functional block diagram of the management apparatus 200 in the emergency power supply system S which concerns on embodiment, and its usage environment. It is a figure which shows an example of the electric power information 231 which concerns on embodiment. 4 is a diagram showing an example of power supply target information 232 according to the embodiment; FIG. It is a figure showing an example of composition of electric vehicle 10 concerning an embodiment. 4 is a flow chart for explaining a series of processes of the management device 200 according to the embodiment; It is a figure which shows the other example of the use environment at the time of a power failure of the emergency power supply system S which concerns on embodiment.

Embodiments of an emergency power supply system, an emergency power supply method, and a program according to the present invention will be described below with reference to the drawings. In the following description, the electric vehicle 10 is assumed to be an electric vehicle equipped with a secondary battery. It may be any electric vehicle in which it is mounted, and may be a hybrid vehicle or a fuel cell vehicle. The electric vehicle 10 may be a car-sharing vehicle, a vehicle owned by a specific company, an organization, or the like, or a vehicle owned by an individual. The electric vehicle 10 may be registered in advance as a vehicle that is permitted to supply the electric power stored in the on-vehicle battery to the outside during a power outage due to a disaster or the like.

[overall structure]
FIG. 1 is a diagram showing an outline of an environment in which an emergency power supply system S according to an embodiment is normally used. FIG. 2 is a diagram showing an overview of the environment in which the emergency power supply system S according to the embodiment is used when an abnormality occurs. Emergency power supply system S includes, for example, charging/discharging device 100 and management device 200 . Charging/discharging device 100 is arranged, for example, in a predetermined parking lot PA. Predetermined parking lots PA include, for example, car sharing vehicle parking lots, complex facility parking lots, collective housing parking lots, and the like.

As shown in FIG. 1 , during normal operation, charging/discharging device 100 receives power supply from power system PS, and performs charging processing for electric vehicle 10 connected to charging/discharging device 100 . Also, during normal times, various facilities such as the first hospital H connected to the power system PS that require power receive power supply from the power system PS, and various activities using this power are performed.

On the other hand, as shown in FIG. 2, when management device 200 detects that the power supply from power system PS has stopped (power failure), charging/discharging device 100 is connected to management device 200 via network NW. Based on the control, the power stored in the vehicle-mounted battery mounted on the electric vehicle 10 connected to the charging/discharging equipment 100 is used to supply power preferentially to various facilities, equipment, etc. (hereinafter referred to as " various facilities”). Various facilities include arbitrary facilities and equipment such as hospitals, residences, government offices, evacuation centers, factories, commercial facilities, street lights, signals, and the like. The network NW includes, for example, the Internet, a WAN (Wide Area Network), a LAN (Local Area Network), a provider device, a radio base station, and the like.

FIG. 3 is a functional block diagram of the management device 200 in the emergency power supply system S according to the embodiment, and an example of its usage environment. The power system PS is connected to various facilities requiring power such as one or more charging/discharging devices 100 installed in the parking lot PA, a hospital H, a street light L, and a signal S via a first transmission line L1. there is In addition, charging/discharging device 100 and various facilities are connected via second power transmission line L2. Although the first power transmission line L1 and the second power transmission line L2 are shown as different power transmission lines in FIG. 3, they may be partially shared.

[Power system PS]
The power system PS supplies power to one or more charging/discharging devices 100 installed in the parking lot PA, various facilities, and the like via the first power transmission line L1. The power system PS includes, for example, power plants, substation equipment, transmission lines, distribution equipment, transformers, protective relay systems, and the like.

[Charging and discharging device 100]
The charging/discharging device 100 normally receives power from the power system PS via the first transmission line L1, and charges the electric vehicle 10 connected to the charging/discharging device 100 . In the event of a power failure, the charging/discharging device 100 preferentially supplies the power stored in the battery 40 mounted on the electric vehicle 10 connected to the charging/discharging facility 100 via the second transmission line L2. supply to various facilities that need to be supplied to One or more charging/discharging devices 100 are installed in the parking lot PA. Although FIG. 3 shows three charging/discharging devices, first charging/discharging device 100-1, second charging/discharging device 100-2, and third charging/discharging device 100-3, the number of charging/discharging devices is Optional. The first charge/discharge device 100-1, the second charge/discharge device 100-2, and the third charge/discharge device 100-3 are simply referred to as charge/discharge device 100 when not distinguished from each other.

The charging/discharging device 100 includes, for example, a housing 102, a control device 104, a cable connection port 106, and a switching section . The housing 102 incorporates a control device 104 and a switching section 108 .

Control device 104 can communicate with electric vehicle 10, management device 200, and an electric power company that manages electric power system PS. The control device 104 controls the electric vehicle 10 or various devices based on input information from an input device (not shown) provided outside the housing 102, information provided by the electric vehicle 10, the management device 200, and the electric power company. Control the power supply to the facility. Each function of the control device 104 is realized, for example, by a hardware processor such as a CPU (Central Processing Unit) executing a program (software). Some or all of these components are hardware (circuits) such as LSI (Large Scale Integration), ASIC (Application Specific Integrated Circuit), FPGA (Field-Programmable Gate Array), GPU (Graphics Processing Unit) (including circuitry), or by cooperation of software and hardware. The program may be stored in advance in a storage device such as the HDD or flash memory of the control device 104 (a storage device having a non-transitory storage medium), or may be a removable storage medium such as a DVD or CD-ROM. , and may be installed in the HDD or flash memory of the control device 104 by loading the storage medium (non-transitory storage medium) into the drive device.

Cable connection port 106 is formed to open on the outer surface of housing 102 . A charging cable 120 can be connected to the cable connection port 106 . Charging cable 120 includes a first plug 122 and a second plug 124 . First plug 122 is connected to cable connection port 106 of charging/discharging device 100 . Second plug 124 is connected to a charging port of electric vehicle 10 .

Switching unit 108 switches the connection destination of charging/discharging device 100 between first power transmission line L<b>1 and second power transmission line L<b>2 under the control of control device 104 . When switching unit 108 is connected to first power transmission line L<b>1 , charge/discharge device 100 supplies electric power supplied from power system PS to electric vehicle 10 connected to charge/discharge device 100 . In the example shown in FIG. 3, first charging/discharging device 100-1 supplies electric power supplied from electric power system PS to electric vehicle 10A. On the other hand, when the switching unit 108 is connected to the second power transmission line L2, the charging/discharging device 100 transfers the electric power stored in the battery 40 mounted on the electric vehicle 10 connected to the charging/discharging equipment 100 to a power outage. It supplies power to various facilities that need to be supplied preferentially at times. In the example shown in FIG. 3, the first charging/discharging device 100-1 supplies power stored in the battery 40A mounted on the electric vehicle 10A to various facilities that need to be preferentially supplied with power during a power outage. .

[Management device 200]
Management device 200 centrally manages charging/discharging device 100, the number of parked electric vehicles 10 connected to charging/discharging device 100, the state of battery 40, and the like. Management device 200 collects information on battery 40 mounted on electric vehicle 10 connected to charging/discharging device 100 via network NW. In the event of a power failure, the management device 200 transmits a control signal to the charging/discharging equipment 100 via the network NW, thereby storing in the battery 40 mounted on the electric vehicle 10 connected to the charging/discharging equipment 100 The charging/discharging facility 100 is controlled to supply power to various facilities via the second transmission line L2. Management device 200 is arranged, for example, close to parking lot PA so as to be able to communicate with charge/discharge device 100 even during a power outage. Alternatively, the management device 200 may be placed in a facility to which power is supplied, such as a hospital.

The management device 200 includes, for example, a communication device 210, a control section 220, and a storage section 230. Communication device 210 includes a communication interface such as a NIC. Communication device 210 transmits and receives information to and from multiple charging/discharging devices 100, an electric power company that manages electric power system PS, and electric vehicle 10 via network NW.

The control unit 220 controls operations of the management device 200 . The control unit 220 includes, for example, a power failure detection unit 221 (an example of a “detection unit”), a power information acquisition unit 222 (an example of an “acquisition unit”), a power supply target determination unit 223 (an example of a “determination unit” ), a notification unit 224 (an example of a “notification unit”), and a power supply control unit 225 (an example of a “control unit”). Each functional unit of the control unit 220 is implemented by, for example, a hardware processor such as a CPU executing a program (software). Also, some or all of these components may be realized by hardware (circuitry) such as LSI, ASIC, FPGA, GPU, etc., or by cooperation of software and hardware may be The program may be stored in advance in a storage device such as the HDD or flash memory of the management device 200 (a storage device having a non-transitory storage medium), or may be a removable storage medium such as a DVD or CD-ROM. , and may be installed in the HDD or flash memory of the management device 200 by loading the storage medium (non-transitory storage medium) into the drive device.

The power failure detection unit 221 detects that the power supply from the power system PS has stopped based on the information received via the communication device 210 . The power failure detection unit 221 detects that the power supply from the power system PS has stopped, for example, based on power failure information provided by an electric power company or the like. Power failure detection unit 221 detects that the voltage drop amount supplied to power system PS exceeds a threshold based on the voltage information received from the voltage sensor provided in power system PS, and the power supply from power system PS stops. You may detect that it stopped.

Power information acquisition unit 222 receives power information generated by charge/discharge device 100 via communication device 210 . Alternatively, power information acquisition unit 222 receives power information from electric vehicle 10 via communication device 210 . The power information includes information such as the voltage of the battery 40 of the electric vehicle 10 and the SOC (State Of Charge).

Based on the power information acquired by the power information acquisition unit 222 and the power supply target information stored in the storage unit 230, the power supply target determination unit 223 determines whether the battery 40 mounted on the electric vehicle 10 is stored in the electric vehicle 10 at the time of a power failure. determines the object to which the stored power is supplied.

The notification unit 224 notifies the user of the electric vehicle 10 via the communication device 210 of notification information indicating that the electric vehicle 10 has become a power supply source during a power failure. The notification unit 224 transmits notification information to the charging/discharging device 100, for example. Receiving this notification information, charging/discharging device 100 causes a display device (not shown) to display a screen indicating that electric vehicle 10 has become a power supply source (a screen indicating that electric vehicle 10 cannot be used). The notification unit 224 , for example, transmits notification information to the terminal device of the user of the electric vehicle 10 . The terminal device that has received this notification information causes its display unit to display a screen indicating that the electric vehicle 10 has become a power supply source (a screen indicating that the electric vehicle 10 cannot be used).

Power supply control unit 225 transmits a control signal for controlling the charging/discharging process of charging/discharging device 100 to charging/discharging device 100 via communication device 210 during a power failure. The control signal includes, for example, a first control signal that instructs to supply the power of the battery 40 to the power supply target determined by the power supply target determining unit 223, and a control signal that limits the movement (eg, running operation) of the electric vehicle 10. and a second control signal instructing to (prohibit). Control device 104 of charging/discharging device 100 that has received the first control signal switches switching unit 108 to second transmission line L2 so as to supply the power of battery 40 to the power supply target determined by power supply target determination unit 223 . and start supplying power to the target. Control device 104 of charging/discharging device 100 that has received the second control signal transmits to electric vehicle 10 a signal that instructs to limit the movement of electric vehicle 10 . Upon receiving this signal, the electric vehicle 10 performs, for example, a lock process that disables running, and thereafter functions as a power supply source.

The storage unit 230 stores, for example, power information 231, power supply target information 232, and the like. The storage unit 230 is realized by, for example, an HDD, a flash memory, an EEPROM, a ROM (Read Only Memory), a RAM (Random Access Memory), or the like.

FIG. 4 is a diagram illustrating an example of power information 231 according to the embodiment. The power information 231 is associated with a charging/discharging device ID that identifies the charging/discharging device 100, an electric vehicle ID that identifies the electric vehicle 10 connected to the charging/discharging device, and the amount of power stored in the battery 40 of the electric vehicle 10. contains information that has been The power information 231 includes, for example, information in which the charging/discharging device ID “100-1”, the vehicle ID “10A”, and the power storage amount “35” are associated with each other.

FIG. 5 is a diagram showing an example of the power supply target information 232 according to the embodiment. The power supply target information 232 includes information in which a power supply target facility, a priority (an example of priority), and a required power amount are associated with each other. The power supply target facility is a facility set in advance as a candidate for the power supply destination of the battery 40 of the electric vehicle 10 at the time of power failure. The priority indicates to which of the plurality of supply destination candidates the power is preferentially supplied. A priority is set in advance for each power supply target. For example, in the example shown in FIG. 4, the "first hospital" with priority "1" is the candidate to which power is most preferentially supplied, followed by the "evacuation hospital" with priority "2". "Tokoro" is the next priority candidate for supply. That is, the power supply target determination unit 223 refers to the power supply target information 232 and determines at least one power supply target in descending order of priority. The required amount of power indicates the amount of power required by the facility to which power is to be supplied. For example, the example shown in FIG. 5 indicates that the power supply target facility “first hospital” requires power of “100 kWh”.

[Electric vehicle]
FIG. 6 is a diagram showing an example of the configuration of the electric vehicle 10 according to the embodiment. As shown in FIG. 6, the electric vehicle 10 includes, for example, a motor 12, drive wheels 14, a brake device 16, a vehicle sensor 20, a PCU (Power Control Unit) 30, a battery 40, a voltage sensor, a current A sensor, a battery sensor 42 such as a temperature sensor, a communication device 50 , a display device 60 , a charging port 70 and a converter 72 are provided.

Motor 12 is, for example, a three-phase AC motor. The rotor of motor 12 is coupled to drive wheels 14 . The motor 12 uses the supplied electric power to output power to the driving wheels 14 . Also, the motor 12 generates electricity using the kinetic energy of the vehicle when the vehicle is decelerating.

The brake device 16 includes, for example, a brake caliper, a cylinder that transmits hydraulic pressure to the brake caliper, and an electric motor that generates hydraulic pressure in the cylinder. The brake device 16 may include, as a backup, a mechanism that transmits hydraulic pressure generated by operating the brake pedal to the cylinders via the master cylinder. The brake device 16 is not limited to the configuration described above, and may be an electronically controlled hydraulic brake device that transmits the hydraulic pressure of the master cylinder to the cylinder.

The vehicle sensor 20 includes an accelerator opening sensor, a vehicle speed sensor, and a brake depression amount sensor. The accelerator opening sensor is attached to an accelerator pedal, which is an example of an operator that receives an acceleration instruction from the driver, detects the operation amount of the accelerator pedal, and outputs it to the control unit 36 as an accelerator opening. The vehicle speed sensor includes, for example, a wheel speed sensor attached to each wheel and a speed calculator, and integrates the wheel speeds detected by the wheel speed sensors to derive the speed of the vehicle (vehicle speed). Output to the display device 60 . The brake pedaling amount sensor is attached to the brake pedal, detects the amount of operation of the brake pedal, and outputs it to the control unit 36 as the brake pedaling amount.

The PCU 30 includes, for example, a converter 32, a VCU (Voltage Control Unit) 34, and a controller . It should be noted that it is only an example that these components are integrated into the PCU 34, and these components may be arranged in a distributed manner.

Converter 32 is, for example, an AC-DC converter. A DC side terminal of the converter 32 is connected to the DC link DL. A battery 40 is connected to the DC link DL via the VCU 34 . The converter 32 converts the alternating current generated by the motor 12 into direct current and outputs the direct current to the direct current link DL.

VCU 34 is, for example, a DC-DC converter. VCU 34 boosts the power supplied from battery 40 and outputs the boosted power to DC link DL.

The control unit 36 includes, for example, a motor control unit, a brake control unit, and a battery/VCU control unit. The motor control unit, brake control unit, and battery/VCU control unit may be replaced with separate control devices such as a motor ECU, a brake ECU, and a battery ECU.

The control unit 36 includes a mode control unit for performing travel control in a travel mode selected from a plurality of travel modes. As the running mode, for example, a saving mode, a high output mode, and a standard mode are set. The saving mode is, for example, a mode in which power consumption is suppressed even if driving performance is lowered, and the high output mode is a mode in which driving performance is enhanced, for example, even if power consumption is increased. Standard mode is a mode between economy mode and high power mode.

The motor control section controls the motor 12 based on the output of the vehicle sensor 20 . The brake control section controls the brake device 16 based on the output of the vehicle sensor 20 . The battery/VCU control unit calculates the SOC of the battery 40 based on the output of the battery sensor 42 attached to the battery 40 and outputs it to the VCU 34 and the display device 60 . The VCU 34 increases the voltage of the DC link DL according to the instruction from the battery/VCU control unit. The motor control unit calculates the electricity consumption of the electric vehicle 10 based on the output of the vehicle sensor 20 and the transition of the SOC of the battery 40 . The motor control unit calculates the electricity consumption of the electric vehicle 10 for each traveling mode. The motor control unit outputs the calculated electricity consumption to the communication device 50 as electricity consumption information.

Battery 40 is, for example, a secondary battery such as a lithium ion battery. The battery 40 stores electric power introduced from the external charging/discharging device 100 of the electric vehicle 10 and discharges the electric power for running the electric vehicle 10 . Also, the battery 40 discharges power to supply power to various external facilities during a power outage. Battery sensor 42 includes, for example, a current sensor, a voltage sensor, and a temperature sensor. The battery sensor 42 detects, for example, the current value, voltage value, and temperature of the battery 40 . The battery sensor 42 outputs the detected current value, voltage value, temperature, etc. to the control unit 36 and the communication device 50 .

Communication device 50 includes a wireless module for connecting to a cellular network or Wi-Fi network. The communication device 50 acquires battery usage information such as a current value, a voltage value, and a temperature output by the battery sensor 42, and transmits the information to the management device 200 via the network NW. The communication device 50 transmits the electricity consumption information output by the motor control section of the control section 36 to the management device 200 . The communication device 50 adds battery type information and vehicle type information of the host vehicle to the battery usage information and electricity consumption information to be transmitted. The communication device 50 also receives information transmitted by the management device 200 via the network NW. The communication device 50 outputs the received information to the display device 60 .

The display device 60 includes, for example, a display section 62 and a display control section 64 . The display section 62 displays information according to the control of the display control section 64 . The display control unit 64 causes the display unit 62 to display an image based on the information transmitted by the management device 200 according to the information output by the control unit 36 and the communication device 50 . The display control unit 64 also causes the display unit 62 to display the vehicle speed and the like output by the vehicle sensor 20 .

Charging port 70 is provided toward the outside of the vehicle body of electric vehicle 10 . Charging port 70 is connected to charging/discharging device 100 via charging cable 120 . A first plug 122 of charging cable 120 is connected to charging/discharging device 100 , and a second plug 124 of charging cable 120 is connected to charging port 70 . Power supplied from charging/discharging device 100 is supplied to charging port 70 via charging cable 120 . Also, the power supplied from the battery 40 to the charging port 70 is supplied to the charging/discharging device 100 via the charging cable 120 .

Charging cable 120 also includes a signal cable attached to the power cable. The signal cable mediates communication between electric vehicle 10 and charging/discharging device 100 . Battery usage information such as a current value, a voltage value, and a temperature output by the battery sensor 42 is transmitted from the electric vehicle 10 to the charging/discharging device 100 via the signal cable.

Converter 72 is provided between charging port 70 and battery 40 . Converter 72 converts a current introduced from charging/discharging device 100 via charging port 70, such as an alternating current, into a direct current. Converter 72 outputs the converted DC current to battery 40 . The converter 72 also converts a current drawn from the battery 40, such as a direct current, into an alternating current. Converter 72 outputs the converted alternating current to charging port 70 .

[Processing flow of management device 200]
A series of processing flows of the management device 200 according to the embodiment will be described below using a flowchart. FIG. 7 is a flowchart for explaining the flow of a series of processes of the management device 200 according to the embodiment.

First, the power failure detection unit 221 determines whether or not the power supply from the power system PS has stopped (whether or not a power failure has occurred) based on power failure information received via the communication device 210 (step S101). . The power failure detection unit 221 determines whether or not the power supply from the power system PS has stopped, for example, based on power failure information provided by an electric power company or the like. When the power failure detection unit 221 determines that the power supply from the power system PS has not stopped, it continues the same determination.

On the other hand, when the power failure detection unit 221 determines that the power supply from the power system PS has stopped, the power information acquisition unit 222 acquires the power of the battery 40 generated by the charging/discharging device 100 via the communication device 210. Information is received (step S103).

Next, based on the power information collected by the power information acquisition unit 222 and the power supply target information 232 stored in the storage unit 230, the power supply target determination unit 223 determines whether the battery 40 mounted on the electric vehicle 10 is determines a target (first target) to which the electric power stored in is supplied (step S105). For example, in the case of the power supply target information 232 shown in FIG. 5, the power supply target determination unit 223 determines the "first hospital" with the priority of "1" as the power supply target.

Next, the power supply target determining unit 223 determines whether or not there is a surplus power in the battery 40 when power is supplied to the determined first target (step S107). For example, when the power stored in the battery 40 of the electric vehicle 10 (for example, the total power of the plurality of batteries 40) is 200 KWh, the power stored in the battery 40 is determined as the first target. Subtract the 100 KWh required power for one hospital to calculate the remaining amount of power that can be supplied. If the calculated remaining amount is sufficient (e.g., equal to or greater than a predetermined threshold value), the power supply target determination unit 223 determines that the power stored in the battery 40 has a surplus capacity. In this case, the power supply target determination unit 223 again determines the target (second target) to which power is to be supplied (step S105). For example, in the case of the power supply target information 232 shown in FIG. 5, the power supply target determination unit 223 determines the "evacuation center" with the priority of "2" as the power supply target. That is, after determining the first power supply target, the power supply target determination unit 223 calculates the remaining amount of power that can be supplied by the battery based on the required power amount of the first power supply target. If there is a surplus in the amount, the second power supply target is determined based on the priority.

On the other hand, when the power supply target determination unit 223 determines that the power stored in the battery 40 has no remaining capacity, the notification unit 224 transmits notification information indicating that the electric vehicle 10 has become the power supply source to the communication device. 210 to notify the user of the electric vehicle 10 (step S109). The notification unit 224 transmits notification information to the charging/discharging device 100, for example. Receiving this notification information, charging/discharging device 100 causes a display device (not shown) to display a screen indicating that electric vehicle 10 has become a power supply source (a screen indicating that electric vehicle 10 cannot be used).

Next, the power supply control unit 225 transmits a control signal for controlling the charging/discharging process of the charging/discharging device 100 to the charging/discharging device 100 via the communication device 210 (step S111). Control device 104 of charging/discharging device 100 that has received the first control signal included in the control signal causes switching unit 108 to supply the power of battery 40 to the power supply target determined by power supply target determination unit 223 . It connects with the 2nd power transmission line L2, and starts the electric power supply to the electric power supply object. Further, control device 104 of charging/discharging device 100 that has received the second control signal included in the control signal transmits to electric vehicle 10 a signal that instructs to limit the operation of electric vehicle 10 . The electric vehicle 10 that has received this signal undergoes, for example, a lock process that makes it impossible to perform a running operation, and thereafter functions as a power supply source. With the above, the processing of this flowchart ends.

According to the emergency power supply system S according to the above embodiment, when it is detected that the power supply from the power system has stopped, the obtained power information and the priority set in advance for each power supply target At least one power supply object is determined based on the degree and the power supply, and the charging and discharging device is controlled so that the power accumulated in the battery is supplied to the determined power supply object. power supply can be performed efficiently.

In the above embodiment, the configuration in which charging/discharging is controlled by the charging/discharging device 100 installed in one parking lot PA has been described as an example, but the configuration is not limited to this. For example, as shown in FIG. 8, it is installed in each of a plurality of parking lots PA (first parking lot PA1, second parking lot PA2, third parking lot PA3, fourth parking lot PA4) that are geographically separated from each other. Control of charging/discharging of the charging/discharging device 100 may be performed.

In this case, management device 200 acquires power information from charging/discharging device 100 installed in each of first parking lot PA1 to fourth parking lot PA4, and controls power supply to power supply targets. Power information acquisition unit 222 acquires a plurality of power information of electric vehicle 10 connected to charging/discharging device 100 installed in each of a plurality of parking lots. Next, the power supply target determination unit 223 calculates the total amount of suppliable power using the acquired plurality of power information, and selects at least one power supply target based on the calculated total amount and the priority. decide.

For example, when power is supplied to the “first hospital H” to which power is to be supplied, the power supply control unit 225 of the management device 200 determines that the vehicle is parked in the second parking lot PA2 closest to the first hospital H. A control signal for supplying the power of the battery 40 of the electric vehicle 10 to the first hospital H may be transmitted to the charging/discharging device 100 of the second parking lot PA2. Further, when power is supplied to the "evacuation center E" to which power is to be supplied, the power supply control unit 225 of the management device 200 controls the power supply of the vehicle parked in the first parking lot PA1 closest to the evacuation center E. A control signal for supplying the power of the battery 40 of the vehicle 10 to the shelter E may be transmitted to the charging/discharging device 100 of the first parking lot PA1.

In addition, when the electric vehicle 10 parked in one parking lot (for example, the second parking lot PA2) alone cannot satisfy the power supply target (for example, the first hospital H), the management device 200 The power supply control unit 225 supplies the power of the battery 40 of the electric vehicle 10 parked in the parking lot (for example, the third parking lot PA3) that is the second closest to the power supply target to the first hospital H. may be transmitted to the charging/discharging device 100 in the parking lot that is the second closest to the power supply target.

As described above, the mode for carrying out the present invention has been described using the embodiments, but the present invention is not limited to such embodiments at all, and various modifications and replacements can be made without departing from the scope of the present invention. can be added.

DESCRIPTION OF SYMBOLS 10, 10A, 10B... Electric vehicle, 40, 40A, 40B... Battery, 100... Charging/discharging apparatus, 102... Housing, 104... Control apparatus, 106... Cable connection port, 108... Switching part, 120... Charging cable, 200 Management device 210 Communication device 220 Control unit 221 Power failure detection unit 222 Power information acquisition unit 223 Power supply target determination unit 224 Notification unit 225 Power supply control unit 230 Storage Part, L1... First transmission line, L2... Second transmission line, PA, PA1, PA2, PA3, PA4... Parking lot, PS... Power system

Claims (8)

a charging/discharging device that charges and discharges a battery mounted on a vehicle;
a management device that controls the charging and discharging device;
An emergency power supply system comprising
The management device
a detection unit that detects that the power supply from the power system has stopped;
an acquisition unit that acquires power information of the battery;
When the detection unit detects that the power supply from the power system has stopped, at least one power is detected based on the obtained power information and a priority set in advance for each power supply target. a determination unit that determines a supply target;
a control unit that controls the charging/discharging device so that the power accumulated in the battery is supplied to the determined power supply target;
with
The charging/discharging device is connected to a first transmission line capable of supplying power supplied from the power system to the vehicle, and supplying power accumulated in the battery to the power supply target. A switching unit that switches between a possible second power transmission line,
The control unit provides a control signal for instructing the determined power supply object to be supplied with the power accumulated in the battery when the detection unit detects that power from the power system has stopped. to the charging and discharging device,
The charging/discharging device connects the switching unit to the second transmission line based on the control signal, and supplies the power accumulated in the battery to the determined power supply target.
Emergency power supply system. The control unit further performs control to restrict movement of the vehicle,
The emergency power supply system according to claim 1. Further comprising a notification unit that notifies a user of the vehicle that the battery is used as a power supply source,
The emergency power supply system according to claim 1 or 2. The determination unit determines the at least one power supply target in order of priority.
The emergency power supply system according to any one of claims 1 to 3. After determining the first power supply target, the determination unit calculates the remaining amount of power that can be supplied by the battery based on the required power amount of the first power supply target, If there is spare capacity, determining a second power supply target based on the priority;
The emergency power supply system according to any one of claims 1 to 4. The acquisition unit acquires a plurality of the electric power information of the vehicle connected to the charging/discharging device installed in each of a plurality of parking lots,
The determination unit calculates a total amount of suppliable power using the plurality of acquired power information, and determines at least one power supply target based on the calculated total amount and the priority.
The emergency power supply system according to any one of claims 1 to 5. the computer
Detecting that the power supply from the power system has stopped,
Acquiring power information of a battery installed in a vehicle connected to a charging/discharging device,
When it is detected that the power supply from the power system has stopped, at least one power supply target is determined based on the obtained power information and a priority set in advance for each power supply target. death,
An emergency power supply method for controlling the charging/discharging device such that the power stored in the battery is supplied to the determined power supply target,
The charging/discharging device is connected to a first transmission line capable of supplying power supplied from the power system to the vehicle, and supplying power accumulated in the battery to the power supply target. A switching unit that switches between a possible second power transmission line,
When the computer detects that the power from the power system has stopped, the control signal instructing the determined power supply target to supply the power accumulated in the battery is transmitted to the charging/discharging device. send to
The charging/discharging device connects the switching unit to the second transmission line based on the control signal, and supplies the power accumulated in the battery to the determined power supply target.
Emergency power supply method. to the computer,
Detect that the power supply from the power system has stopped,
Acquiring power information of a battery mounted on a vehicle connected to a charging/discharging device,
When it is detected that the power supply from the power system has stopped, at least one power supply target is determined based on the obtained power information and a priority set in advance for each power supply target. let
A program for controlling the charging/discharging device so that the power accumulated in the battery is supplied to the determined power supply target,
The charging/discharging device is connected to a first transmission line capable of supplying power supplied from the power system to the vehicle, and supplying power accumulated in the battery to the power supply target. A switching unit that switches between a possible second power transmission line,
a control signal instructing the computer to supply the power stored in the battery to the determined power supply target when the power from the power system is detected to be stopped; send to
The charging/discharging device connects the switching unit to the second transmission line based on the control signal, and supplies the power accumulated in the battery to the determined power supply target.
program.

Images