JP2007252117A - Power supplying system and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supplying system for receiving the large quantity of power supplied from electric vehicles, and supplying the large quantity of emergency energy in emergency situations. <P>SOLUTION: Power supplying equipment 3 is installed in a parking space P in which a plurality of the electric vehicles 2 park, and connected to a distribution panel 41 in a community center 4. If power supplied from a commercial power supply E is interrupted, a vehicle rechargeable battery 21 is discharged, and supplies power through a charger/discharger 31 and a charging/discharging terminal 32 to the community center 4. If a remaining capacity of the vehicle rechargeable battery 21 attains a predetermined value, the vehicle rechargeable battery 21 is prevented from being discharged. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a power supply system and a power supply method for supplying power energy from an electric vehicle to an external system facility, and more particularly to a power supply system and a power supply method for supplying power energy from a plurality of electric vehicles.

In recent years, systems have been developed that supply power from residential household power supplies (commercial power supplies) to electric vehicle storage batteries, and in the event of an emergency, a power supply system that supplies power from the electric vehicle to the housing side is also known. (For example, refer to Patent Document 1). In this power supply system, a charger / discharger having a charge / discharge connector is installed on the house side, an electric vehicle side has an inlet, an inverter that performs AC / DC conversion and DC / AC conversion, a vehicle storage battery, A power system for vehicles equipped with is installed. The vehicle power system is connected to a charge / discharge connector of a house-side charger / discharger by an inlet, and can receive power from a home power supply of the house or supply power to the house. In normal times, power is supplied from the household power source to the vehicle storage battery, and in an emergency such as a power outage, power is supplied from the vehicle storage battery to the home electrical equipment.
JP-A-11-178234

  By the way, in the event of an emergency due to a large earthquake or typhoon, the commercial power source may be out of power on a large scale for a long time. In such an emergency, it is necessary to supply more emergency energy (backup energy) and secure the lives of many people living in the power outage area. For example, when a large number of residents evacuate to public facilities such as a public hall in a blackout area, it is necessary to supply emergency energy sufficient for the evacuated residents to live. However, in the power supply system as described in Patent Document 1, the residential charger / discharger and the electric vehicle are in a one-to-one relationship, and power is supplied from one electric vehicle to one residential side. It can only be supplied. For this reason, residents evacuated to public halls can not only supply as much emergency energy as they can live, but residents who do not have a power supply system cannot receive emergency energy supply. It will be.

  Therefore, an object of the present invention is to provide a power supply system and a power supply method that can receive more power from an electric vehicle and supply more emergency energy in an emergency or the like.

In order to achieve the above object, an invention according to claim 1 is an electric power supply system for supplying electric power from a plurality of electric vehicles to an external system facility, wherein the electric vehicle includes a vehicle storage battery, and the plurality of electric vehicles are provided. A power supply facility is installed in a parking space where the electric vehicle is parked. The power supply unit discharges the vehicle storage battery to supply power to the external system facility, and controls the power supply unit. Power control means, and the power control means controls the power supply means to stop discharging from the vehicle storage battery when the remaining capacity of the vehicle storage battery reaches a predetermined value. It is characterized by.
(Function)
By the power supply means of the power supply facility, the vehicle storage battery of the electric vehicle parked in the parking space is discharged and power is supplied to the external system facility. When the remaining capacity of the vehicle storage battery reaches a predetermined value, the discharge from the vehicle storage battery is stopped.

According to a second aspect of the present invention, in the power supply system according to the first aspect, the power control means detects that the power supply from the external system power supply is stopped, and discharges from the vehicle storage battery. The power supply means is controlled to start the operation.
(Function)
When power supply from an external system power supply such as a commercial power supply is stopped, discharge from the vehicle storage battery is started and power is supplied to the external system equipment.

  According to a third aspect of the present invention, in the power supply system according to any one of the first or second aspects, the power supply facility is notified that the remaining capacity of the vehicle storage battery has reached a predetermined value. It is characterized by having an informing means.

  According to a fourth aspect of the present invention, in the power supply system according to any one of the first to third aspects, the power supply facility includes a discharge amount measuring unit that measures a discharge amount from the vehicle storage battery. It is characterized by that.

  According to a fifth aspect of the present invention, in the power supply system according to any one of the first to fourth aspects, the power supply facility is supplied with power from an external power supply to charge the vehicle storage battery. It is characterized by having a charging means.

  According to a sixth aspect of the present invention, in the power supply system according to the fifth aspect of the present invention, the power supply facility includes a charge amount measuring means for measuring a charge amount of the vehicle storage battery.

  The invention according to claim 7 is a power supply method for supplying electric power from a plurality of electric vehicles to an external system facility, wherein the plurality of electric vehicles are parked in a parking space, and a vehicle storage battery of the electric vehicle is discharged. Then, electric power is supplied to the external system facility, and when the remaining capacity of the vehicle storage battery reaches a predetermined value, the discharge from the vehicle storage battery is stopped.

  According to invention of Claim 1 and Claim 7, the storage battery for vehicles of the some electric vehicle parked in the parking space is discharged, and electric power is supplied to external system installation. For this reason, more electric power can be supplied by the discharge from the vehicle storage battery of a plurality of electric vehicles, and more emergency energy can be supplied to the external system equipment. Further, when the remaining capacity of the vehicle storage battery reaches a predetermined value, the discharge from the vehicle storage battery is stopped. For this reason, it is prevented that the remaining capacity of the vehicle storage battery is lost, and power is supplied to the vehicle storage battery from another vehicle storage battery (the vehicle storage battery is charged), and power to the external system equipment is prevented. Supply is maintained well. Further, for example, by setting the remaining capacity of the vehicle storage battery to the capacity required to move the electric vehicle from the parking space, the electric vehicle with the remaining capacity of the vehicle storage battery decreased can be moved from the parking space. The electric vehicle can be parked in the parking space, and the power supply to the external system facility can be maintained (continued).

  According to the second aspect of the present invention, when power supply from an external system power supply such as a commercial power supply is stopped (cut off), discharge from the vehicle storage battery is started and power is supplied to the external system equipment. Therefore, it becomes possible to supply electric power to the external system equipment without interruption without interrupting power.

  According to the third aspect of the invention, the notification means notifies that the remaining capacity of the vehicle storage battery has reached a predetermined value. For this reason, for example, an electric vehicle whose remaining capacity of a vehicle storage battery has been reduced can be quickly moved from the parking space, and another electric vehicle can be parked in the parking space to permanently maintain power supply to external system facilities. It becomes possible to do.

  According to the invention described in claim 4, since the discharge amount from the vehicle storage battery is measured by the discharge amount measuring means, the electric vehicle owner is paid based on the discharge amount. be able to.

  According to the fifth aspect of the present invention, since the power supply facility is provided with charging means for charging the vehicle storage battery, for example, in normal times when power is supplied from a commercial power supply (external power supply) The vehicle storage battery of the electric vehicle parked in the space can be charged. For this reason, it becomes possible to utilize a parking space and parking time effectively.

  According to the invention described in claim 6, since the charge amount to the vehicle storage battery is measured by the charge amount measuring means, the owner of the electric vehicle is charged based on the charge amount. be able to.

  Next, embodiments of the present invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a schematic configuration diagram of a power supply system 1 according to this embodiment. This power supply system 1 is a system that supplies power from a plurality of electric vehicles 2 to a public hall 4 (external system facility) in an emergency such as a power failure, and supplies power to a parking space P in which the plurality of electric vehicles 2 can be parked. Equipment 3 is installed.

  The electric vehicle 2 has only a motor (electric motor) as a power source, and the energy source is an electric vehicle using a storage battery. In addition, the power source includes an engine and a motor, and the motor energy source is a hybrid vehicle using a storage battery. A fuel cell vehicle using only a motor and its energy source using a fuel cell is also included. Hereinafter, in the present embodiment, an explanation will be given mainly for an electric vehicle using only a motor as a power source and a storage battery as the energy source. The vehicle storage battery 21 (battery) mounted on the electric vehicle 2 is a lead storage battery, a nickel-metal hydride storage battery, a lithium ion storage battery, or the like (all of which include a sealed type). There are AC motors such as magnet type synchronous motors and DC motors. Furthermore, the electric vehicle 2 is mounted with an inverter, a transmission, a differential device (differential), and the like that convert direct current into alternating current. A storage battery cable 22 is connected to the vehicle storage battery 21, and a charge / discharge port 23 is provided at the tip of the storage battery cable 22. A charge / discharge paddle 3114 of the charger / discharger 31 to be described later is inserted into the charge / discharge port 23, so that power can be exchanged (transmitted) with the charger / discharger 31.

  The power supply facility 3 mainly includes a plurality of chargers / dischargers 31 installed corresponding to the parking areas of the electric vehicles 2, and a charge / discharge terminal that controls each charger / discharger 31 and supplies power to the public hall 4. 32, and each charger / discharger 31 and the charge / discharge terminal 32 are connected by a charge / discharge cable 33. Then, as will be described later, a power supply means for discharging the vehicle storage battery 21 of the electric vehicle 2 by the charger / discharger 31 and the charge / discharge terminal 32 to supply power to the public hall 4, and a commercial power source E (external system) And charging means for charging the vehicle storage battery 21 in response to power supply from the power source.

  As shown in FIG. 2, the charger / discharger 31 includes a charging / discharging unit 311, a measurement unit 312, a communication unit 313, an identification unit 314, a notification unit 315 (notification unit), and arithmetic control for controlling them. Unit 316 (power control means). As shown in FIG. 3, the charging / discharging unit 311 includes an input opening / closing unit 3111 connected to the charging / discharging terminal 32, a converter 3112, an inverter 3113, a charging / discharging paddle 3114, a first switch 3115, and a second switch. 3116. The converter 3112 is an AC / DC converter that converts alternating current into direct current and adjusts the voltage (steps up or down). The inverter 3113 is a DC / AC converter that converts direct current into alternating current and adjusts the voltage. is there. The charge / discharge paddle 3114 is an electromagnetic induction type or contact type terminal (also referred to as “charge / discharge connector” in the case of the contact type), and can be inserted into the charge / discharge port 23 of the electric vehicle 2. The first switch 3115 connects the input terminal 3112 a of the converter 3112 or the output terminal 3113 a of the inverter 3113 to the input opening / closing unit 3111. Similarly, the second switch 3116 connects the output terminal 3112 b of the converter 3112 or the input terminal 3113 b of the inverter 3113 to the charge / discharge paddle 3114. When the input switch 3111 is on (closed), the first switch 3115 is connected to the input terminal 3112a of the converter 3112, and the second switch 3116 is connected to the output terminal 3112b of the converter 3112. The current from the commercial power source E input via the terminal 32 is converted into direct current by the converter 3112, and the electric power is supplied to the vehicle storage battery 21 via the charge / discharge paddle 3114 and the charge / discharge port 23. Thereby, the vehicle storage battery 21 is charged. On the other hand, when the input switch 3111 is on, the first switch 3115 is connected to the output terminal 3113a of the inverter 3113, and the second switch 3116 is connected to the input terminal 3113b of the inverter 3113. A current resulting from the discharge is input through the charge / discharge port 23 and the charge / discharge paddle 3114, and is converted into an alternating current by the inverter 3113. The electric power is supplied to the public hall 4 side through the discharge terminal 32.

  Incidentally, reference numeral 24 in FIG. 3 denotes a battery controller that controls charging / discharging of the vehicle storage battery 21, and the battery controller 24 detects a remaining battery capacity detection unit (not shown) that detects the remaining capacity of the vehicle storage battery 21. ). And it is communicable with the charger / discharger 31 (communication part 313) via the communication line 25. FIG.

  The measuring unit 312 measures the voltage value of the vehicle storage battery 21 via the ammeter that measures the current value flowing out to the vehicle storage battery 21 side and the current value flowing in from the vehicle storage battery 21 side, and the charge / discharge port 23. It has a voltmeter. The measurement result by the measurement unit 312 is sent to the calculation control unit 316, and the calculation control unit 316 calculates (measures) the amount of discharge power from the vehicle storage battery 21 and the charge power amount to the vehicle storage battery 21 based on the measurement result. ) That is, the measurement unit 312 and the calculation control unit 316 constitute a discharge amount measurement unit and a charge amount measurement unit.

  The communication unit 313 includes a communication device, and connects the battery controller 24 of the electric vehicle 2 and the communication cable (not shown) in the charge / discharge cable 33 via the charge / discharge paddle 3114 and the charge / discharge port 23 described above. Via the charging / discharging terminal 32. The remaining capacity of the vehicle storage battery 21 detected by the remaining battery capacity detection unit of the battery controller 24 can be received from the battery controller 24. On the other hand, when the remaining capacity of the vehicle storage battery 21 cannot be received from the battery controller 24, the calculation control unit 316 calculates the remaining capacity of the vehicle storage battery 21 based on the measurement result by the measurement unit 312. That is, the remaining capacity of the vehicle storage battery 21 is calculated based on the current value (discharge current value) flowing from the vehicle storage battery 21 side, the voltage value of the vehicle storage battery 21, and the discharge time. On the other hand, as will be described later, a discharge stop capacity (predetermined value) which is a condition for stopping discharge from the vehicle storage battery 21 is transmitted from the charge / discharge terminal 32 to each charger / discharger 31 and stored in advance. When the remaining capacity of the vehicular storage battery 21 reaches the discharge stop capacity, the charge / discharge unit 311 is controlled by the calculation control unit 316 to stop the discharge (the input opening / closing unit 3111 is turned off). It is.

  The identification unit 314 includes an individual identification device that identifies the electric vehicle 2. In this embodiment, the identification unit 314 uses a CCD (Charge Coupled Device) camera to obtain the number (registration number) of the number plate (vehicle registration number mark) of the electric vehicle 2. The electric vehicle 2 is identified by reading. Then, the read number is transmitted to the control device 42 of the public hall 4 through the charge / discharge terminal 32 as will be described later, and the owner or the like (registrant) of the electric vehicle 2 is determined. Yes.

  The notification unit 315 includes a notification lamp and a notification speaker. When the remaining capacity of the vehicle storage battery 21 reaches the discharge stop capacity, the notification lamp is turned on by the control from the arithmetic control unit 316 and the notification sound is output from the notification speaker. Is generated.

  As shown in FIG. 4, the charge / discharge terminal 32 includes a power transfer unit 321, a detection unit 322, a communication unit 323, a storage unit 324, an input unit 325, a display unit 326, and an operation for controlling them. And a control unit 327 (power control means). The power transfer unit 321 includes a plurality of input ports and output ports, and supplies power from the commercial power source E to each charger / discharger 31 to charge each vehicle storage battery 21 as described later. The electric power from each vehicle storage battery 21 supplied via the charger / discharger 31 is supplied to the public hall 4. The supply source and the supply destination of this power supply are controlled by the arithmetic control unit 327 as described later. The detection unit 322 is a power failure detector having a low voltage detection circuit, and detects that the power supply from the commercial power source E is stopped by detecting a voltage drop of the commercial power source E for a certain period of time. By detecting the voltage increase of E, it is detected that the power supply from the commercial power source E has been restored. The communication unit 323 includes a communication device and can communicate with each charger / discharger 31 and a control device 42 of the public hall 4 described later. The storage unit 324 includes a ROM (Read Only Memory) in which each program is stored, and a RAM (Random Access Memory) in which data information received from each charger / discharger 31 is stored. The input unit 325 includes a keypad for a driver of the electric vehicle 2 to input a charge request, parking end, or the like. The display unit 326 is composed of a liquid crystal display, and displays instruction information and the like input from the input unit 325.

  By the way, the discharge stop capacity which is a condition for stopping the discharge from the vehicle storage battery 21 can be input from the input unit 325, and the input discharge stop capacity is transmitted from the communication unit 323 to each charger / discharger 31. Is done. In the present embodiment, the discharge stop capacity is set to a capacity required to move the electric vehicle 2 from the parking space P. Each charger / discharger 31 and charge / discharge terminal 32 includes an emergency battery (not shown) for performing control, communication, and the like during a power failure.

  As shown in FIG. 5, the public hall 4 includes a switchboard 41 and a control device 42. The distribution board 41 includes a power source switch 411, a circuit switch 412, a detection unit 413, a communication unit 414, and a control unit 415 that controls these. The power source switch 411 is connected to the commercial power source E, the charge / discharge terminal 32, and the emergency battery 43, and is a switch for switching these power supply sources to connect to the circuit switch 412 side. The circuit change-over switch 412 includes emergency lighting, security devices, emergency outlets, and the like, which are emergency necessary equipment groups 441 that require power supply even in an emergency, and medical equipment such as emergency equipment that requires power supply even in an emergency. The essential equipment group 442 is connected to a general equipment group 443 that does not require power supply in an emergency, and is a switch for switching these equipment groups to supply power. The detection unit 413 has the same configuration as the detection unit 322 of the charge / discharge terminal 32 described above, and detects that the power supply from the commercial power source E has been stopped by detecting the voltage drop of the commercial power source E for a certain period of time. Then, by detecting an increase in the voltage of the commercial power source E, it is detected that the power supply from the commercial power source E has been restored. The communication unit 414 includes a communication device and can communicate with the control device 42.

  The control unit 415 controls the power supply selector switch 411 and the circuit selector switch 412 as follows. That is, in normal times when power is supplied from the commercial power source E, the power source switch 411 is connected to the commercial power source E, and the circuit selector switch 412 is connected to all the equipment groups 411 to 443. Thereby, the electric power from the commercial power supply E is supplied to all the equipment groups 411-443. On the other hand, when the stop (power failure) of the power supply from the commercial power source E is detected by the detection unit 413, the power source changeover switch 411 is connected to the charge / discharge terminal 32, and the circuit changeover switch 412 is connected to the emergency necessary equipment group 441 and the emergency Connect to the essential equipment group 442 at the time. Thereby, the electric power from the vehicle storage battery 21 via the charge / discharge terminal 32 is supplied to the emergency necessary equipment group 441 and the emergency essential equipment group 442. Further, when the power supply from the vehicle storage battery 21 is stopped, the power switch 411 is connected to the emergency battery 43 and the circuit switch 412 is connected to the emergency essential equipment group 442. As a result, the power from the emergency battery 43 is supplied to the emergency essential equipment group 442.

  The control device 42 includes a communication unit 421, a storage unit 422, an input unit 423, a display unit 424, a registrant database 425, and an arithmetic control unit 426 that controls these. The communication unit 421 includes a communication device and can communicate with the switchboard 41 and the charge / discharge terminal 32. The storage unit 422 includes a ROM that stores programs and the like, and a RAM that stores data information received from the charge / discharge terminal 32. The input unit 423 includes a keyboard for inputting command information to the charge / discharge terminal 32. The display unit 424 is a display that displays information input from the input unit 423, a calculation result by the calculation control unit 426, and the like.

  The registrant database 425 is a database in which information such as residents registered in advance is stored. As shown in FIG. 6, for each registrant ID 4251, a registrant name 4252, a registrant contact 4253, a car number 4254, A charge amount 4255, a discharge amount 4256, a payment method 4257, a refund method 4258, and others 4259 are stored. In the registrant name 4252, the name of a registered resident or the like (registrant) is stored, and in the registrant contact 4253, the contact telephone number of the registrant is stored. The car number 4254 stores the number of the license plate of the electric car 2 registered by the registrant. The charge amount 4255 stores the amount of power supplied to charge the vehicle storage battery 21 of the electric vehicle 2, and the discharge amount 4256 is supplied from the vehicle storage battery 21 of the electric vehicle 2 to the public hall 4 side. The discharged electric energy is stored. The payment method 4257 stores the payment method of the power charge when the vehicle storage battery 21 is charged, and the return method 4258 is the return method of the power charge when power is supplied from the vehicle storage battery 21 to the public hall 4 side. Is remembered. From the registrant ID 4251 in the registrant database 425 having such a configuration, the car number 4254, the payment method 4257, and the refund method 4258 are stored based on the registration information from the registrant. Further, the charge amount 4255 and the discharge amount 4256 are stored based on the information transmitted from the charge / discharge terminal 32.

  Next, the processing operation of the power supply system 1 having such a configuration will be described.

  First, the normal time in which electric power is supplied from the commercial power source E will be described based on the flowchart shown in FIG. When the electric vehicle 2 is parked in the parking space P and the charge / discharge paddle 3114 of the charger / discharger 31 is inserted into the charge / discharge port 23 of the electric vehicle 2, the identification number 314 of the charger / discharger 31 identifies the number of the electric vehicle 2. The plate number is read (step S1). The read number is transmitted to the charge / discharge terminal 32 together with the identification information of the charger / discharger 31 (step S2) and stored in the storage unit 324 (step S3). Next, when a charge request is input from the input unit 325 of the charge / discharge terminal 32 by a driver of the electric vehicle 2 (step S4), preparation for charging the electric vehicle 2 is made (step S5). That is, in order to supply power from the commercial power source E to the charger / discharger 31 of the electric vehicle 2, the input port of the power transfer unit 321 is set to the commercial power source E and the output port is set to the charger / discharger 31. To do. Then, a charge start command is transmitted from the charge / discharge terminal 32 to the charger / discharger 31 (step S6), and the switches 3115 and 3116 of the charge / discharge unit 311 are controlled in the charger / discharger 31 as described above (step S6). S7). Thereby, electric power is supplied from the commercial power source E to the vehicle storage battery 21 of the electric vehicle 2 through the charge / discharge terminal 32 and the charger / discharger 31 (step S8). Subsequently, when the charger / discharger 31 receives full charge information from the electric vehicle 2 (step S9), the input opening / closing unit 3111 of the charge / discharge unit 311 is turned off and charging is stopped (step S10). Then, charging completion information including the amount of charging power calculated by the calculation control unit 316 as described above is transmitted to the charge / discharge terminal 32 (step S11), and the information is stored in the storage unit 324 (step S12). . This charging information is transmitted to the control device 42 of the public hall 4 together with the number of the electric vehicle 2 (step S13) and stored in the registrant database 425 (step S14). That is, the registrant ID 4251 in which the same number as the received number is stored in the car number 4254 is searched, and the received charge power amount is added to the charge amount 4255 of the registrant ID 4251 and stored. Based on the payment method stored in the payment method 4257, the owner of the electric vehicle 2 (registrant name 4252) is billed for payment of the electric power fee.

  Next, an emergency when power supply from the commercial power source E is stopped will be described based on the flowchart shown in FIG. First, when a power failure is detected in the detection unit 322 of the charge / discharge terminal 32 and the detection unit 413 of the switchboard 41 of the public hall 4 (step S21), the charge / discharge terminal 32 determines whether there is a charger / discharger 31 being charged. Is determined (step S22). When there is a charging / discharging device 31 that is being charged, a charging stop command is transmitted to the charging / discharging device 31 (step S23), the input opening / closing unit 3111 of the charging / discharging unit 311 is turned off, and charging is stopped. (Step S24). Next, similarly to step S11 described above, charging end information including the amount of charging power calculated by the calculation control unit 316 is transmitted to the charge / discharge terminal 32 (step S25), and the information is stored in the storage unit 324. (Step S26). Subsequently, the charging information is transmitted to the control device 42 of the public hall 4 (step S27) and stored in the registrant database 425 in the same manner as in steps S13 and S14 described above.

  In such a power failure state, as shown in FIG. 9, when recovery of power supply from the commercial power source E is detected by the detection unit 322 and the detection unit 413 (step S <b> 31), the charging / discharging terminal 32 is in the middle of charging. It is determined whether or not there is a charger / discharger 31 (step S32). And when there exists the charger / discharger 31 which was in the middle of charge, preparation for charge is performed similarly to said step S5 (step S33), and a charge start command is transmitted to the said charger / discharger 31 ( Step S34). Subsequently, the charging / discharging unit 311 is controlled in the same manner as in step S7 (step S35), and power is supplied again from the commercial power source E to the vehicle storage battery 21 of the electric vehicle 2 (step S36).

  On the other hand, if the power supply from the commercial power source E is stopped and a power failure occurs for a certain time, a power supply request is transmitted from the control device 42 of the public hall 4 to the charge / discharge terminal 32 as shown in FIG. Step S41). Then, it is determined whether or not electric power can be supplied at the charge / discharge terminal 32, that is, whether or not the electric vehicle 2 that can supply electric power is parked (step S42). It is transmitted to the device 42 (step S43), and if it can be supplied, information that can be supplied is transmitted to the control device 42 (step S44). Next, when the control device 42 receives information that can be supplied, power distribution preparation is performed in the switchboard 41 (step S45). That is, the power supply switch 411 and the circuit switch 412 are controlled as described above so that the electric power from the vehicle storage battery 21 is supplied to the emergency necessary equipment group 441 and the emergency essential equipment group 442. On the other hand, in the charge / discharge terminal 32, the first electric vehicle 2 capable of discharging is prepared for charging (step S46). That is, in order to supply electric power from the vehicle storage battery 21 of the electric vehicle 2 to the public hall 4 side, the input port of the power transfer unit 321 is set to the charger / discharger 31 of the electric vehicle 2 and the output port is set to the public hall 4. Set to switchboard 41. Then, a discharge start command is transmitted from the charge / discharge terminal 32 to the charger / discharger 31 (step S47), and the switches 3115 and 3116 of the charge / discharge unit 311 are controlled in the charger / discharger 31 as described above (step S47). S48). Thereby, electric power is supplied to the equipment groups 441 and 442 of the public hall 4 from the vehicle storage battery 21 via the charger / discharger 31 and the charge / discharge terminal 32 (step S49).

  Next, the charger / discharger 31 receives the remaining capacity of the vehicle storage battery 21 from the electric vehicle 2 (step S50), and when the remaining capacity reaches the discharge stop capacity as described above ("Y" in step S51). In the case), the charging / discharging unit 311 is controlled as described above, and the discharging is stopped (step S52). Then, the notification lamp is turned on from the notification unit 315 of the charger / discharger 31, and a notification sound is generated (step S53). Thereby, the electric vehicle 2 can be moved from the parking space P, and another electric vehicle 2 can be parked in the parking space P. Subsequently, the discharge end information including the discharge power amount calculated by the calculation control unit 316 as described above is transmitted to the charge / discharge terminal 32 (step S54), and the information is stored in the storage unit 324 (step S55). ). This discharge information is transmitted to the control device 42 of the public hall 4 together with the number of the electric vehicle 2 (step S56) and stored in the registrant database 425 (step S57). That is, the registrant ID 4251 in which the same number as the received number is stored in the automobile number 4254 is searched, and the received discharge power amount is added to the discharge amount 4256 of the registrant ID 4251 and stored. And based on the refund method memorize | stored in the refund method 4258, the electric power charge is paid to the owner of the electric vehicle 2, etc. Further, it is determined whether there is an electric vehicle 2 that can be discharged next at the charge / discharge terminal 32 (step S58). If there is, the process returns to step S46, and the same processing is performed to supply power. Is continued.

  On the other hand, when the power supply from the commercial power source E is restored and the power supply from the electric vehicle 2 becomes unnecessary, power is supplied from the control device 42 of the public hall 4 to the charge / discharge terminal 32 as shown in FIG. A supply stop request is transmitted (step S59). As a result, preparation for stopping the discharge is made in the charge / discharge terminal 32 (step S60). That is, the setting of the input port and output port of the power transfer unit 321 is canceled. On the other hand, in the switchboard 41 of the public hall 4, the power switch 411 and the circuit switch 412 are controlled according to the power supply status (step S61). Then, a discharge stop command is transmitted from the charge / discharge terminal 32 to the discharging / discharging device 31 (step S62), and discharging is stopped in the same manner as in the above step S52 (step S63). Subsequently, the discharge end information is transmitted to the charge / discharge terminal 32 (step S64) and the information is stored in the storage unit 324 (step S65) in the same manner as in the above steps S54 to S56. 42 (step S66).

  As described above, according to the power supply system 1, the vehicle storage batteries 21 of the plurality of electric vehicles 2 parked in the parking space P are discharged and power is supplied to the public hall 4. Therefore, a large amount of power is supplied by discharging from the vehicle storage battery 21 of the plurality of electric vehicles 2, and more emergency energy can be supplied to the emergency necessary equipment group 441 and the emergency essential equipment group 442. . As a result, for example, when a local earthquake or the like evacuates to the public hall 4 due to a large earthquake or the like, it is possible to secure the lives of more residents.

  Further, when the remaining capacity of the vehicle storage battery 21 reaches the discharge stop capacity as described above, the discharge from the vehicle storage battery 21 is stopped. For this reason, the remaining capacity of the vehicle storage battery 21 is lost, and it is prevented that electric power is supplied from the other vehicle storage battery 21 to the vehicle storage battery 21, and the power supply to the public hall 4 is maintained well. Furthermore, since the discharge stop capacity is set to a capacity required to move the electric vehicle 2 from the parking space P, the electric vehicle 2 in which the remaining capacity of the vehicular storage battery 21 is reduced as described above. It is possible to move from P and park another electric vehicle 2 in the parking space P to maintain power supply to the public hall 4.

  Further, when the power supply from the commercial power source E is stopped, the discharge from the vehicle storage battery 21 is started and the power is supplied to the public hall 4. Therefore, the electric power can be supplied to the public hall 4 without interruption without interruption. It becomes possible. In particular, electric power can be supplied to the emergency essential equipment group 442 such as medical equipment without instantaneous interruption. On the other hand, in normal times when power is supplied from the commercial power source E, the vehicle storage battery 21 of the electric vehicle 2 can be charged as described above, so that the parking space P and the parking time are effectively utilized. Is possible.

(Embodiment 2)
FIG. 12 is a schematic configuration diagram of the power supply system 100 according to this embodiment. In addition, the same code | symbol is attached | subjected and demonstrated about the component equivalent to Embodiment 1. FIG. The power supply system 100 is a system that supplies power from a plurality of electric vehicles 2 to the apartment house 101 (external system equipment) in an emergency such as a power failure, and the power supply equipment 3 is supplied to the parking space P in the apartment house 101. Is installed.

  That is, as in the first embodiment, in normal times when electric power is supplied from the commercial power source E, when the driver of the electric vehicle 2 inputs a charge request to the charge / discharge terminal 32, the discharge terminal 32 and the charge / discharge Electric power is supplied from the commercial power source E to the vehicle storage battery 21 of the electric vehicle 2 via the electric appliance 31. Then, charging completion information including the amount of charging power is transmitted from the charger / discharger 31 to the control device 42 of the apartment house 101 via the charging / discharging terminal 32, and payment of the power fee to the owner of the electric vehicle 2 and the like. You will be charged. On the other hand, in the event of an emergency when the power supply from the commercial power source E is stopped, a power supply request is transmitted from the control device 42 of the apartment house 101 to the charge / discharge terminal 32, via the charger / discharger 31 and the charge / discharge terminal 32. Thus, electric power is supplied from the vehicle storage battery 21 to an emergency facility group of the apartment house 101, such as an emergency lighting, an emergency outlet, and an elevator. Then, discharge end information including the amount of discharge power is transmitted from the charger / discharger 31 to the control device 42 of the apartment house 101 via the charge / discharge terminal 32, and the electric charge is paid to the owner of the electric vehicle 2 and the like. It is what is said.

  According to such a power supply system 100, for example, when a commercial earthquake occurs due to a major earthquake or the like and a power failure occurs, more power is supplied to the necessary equipment in the apartment house 101 and more power is supplied. It is possible to secure the lives of residents. Moreover, since the power supply facility 3 is installed in the parking space P in the apartment house 101, the parking space P can be used effectively, and in normal times when power is supplied from the commercial power source E, The vehicle storage battery 21 of the electric vehicle 2 can be charged to effectively use the parking time.

  As mentioned above, although Embodiment 1 and 2 of this invention were demonstrated, a concrete structure is not restricted to these Embodiment, There exists a change of the design etc. of the range which does not deviate from the summary of this invention. Are also included in the present invention. For example, in Embodiments 1 and 2, the charge / discharge terminal 32 of the power supply facility 3 and the control device 42 of the external system facility are separated, but all or part of one function may be provided in the other. Alternatively, a single device may be provided in the public hall 4 or the apartment house 101. In the first and second embodiments, conversion between direct current and alternating current is performed by each charger / discharger 31, but may be performed by the charge / discharge terminal 32.

  Furthermore, not only at the time of a power outage as described above, but also for other reasons, power may be supplied from the vehicle storage battery 21 to the public hall 4 or the apartment house 101. As described above, one vehicle storage battery 21 is provided. Instead of discharging sequentially, a plurality of vehicle storage batteries 21 may be discharged simultaneously to supply power. Of course, the external system facility may be a nursing facility, a supermarket, or the like, and the electric vehicle 2 that is a hybrid vehicle may be idled and used as a generator.

1 is a schematic configuration diagram of a power supply system according to Embodiment 1. FIG. FIG. 2 is a configuration block diagram of a charger / discharger of the power supply system shown in FIG. 1. FIG. 3 is a configuration block diagram of a charging / discharging unit of the charger / discharger shown in FIG. 2 and a configuration block diagram around a vehicle storage battery of an electric vehicle. FIG. 2 is a configuration block diagram of a charge / discharge terminal of the power supply system shown in FIG. 1. FIG. 2 is a block diagram illustrating a configuration of a switchboard and a control device of the power supply system illustrated in FIG. 1. It is a data block diagram of the registrant database of the control apparatus shown in FIG. 4 is a flowchart illustrating processing operations of the power supply system in a normal state in the first embodiment. 3 is a flowchart illustrating a processing operation of the power supply system during a power failure in the first embodiment. 4 is a flowchart illustrating processing operations of the power supply system when power is restored in the first embodiment. 4 is a flowchart illustrating a processing operation of the power supply system when power is supplied from an electric vehicle in the first embodiment. FIG. 11 is a flowchart showing a processing operation continued from FIG. 10. FIG. 6 is a schematic configuration diagram of a power supply system according to Embodiment 2. FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Electric power supply system 2 Electric vehicle 21 Storage battery 22 Vehicle battery cable 23 Charging / discharging port 3 Electric power supply equipment 31 Charger / discharger (electric power supply means, charging means)
311 Charging / discharging unit 3114 Charging / discharging paddle 312 Measuring unit (discharge amount measuring means, charge amount measuring means)
313 Communication unit 314 Identification unit 315 Notification unit (notification means)
316 Calculation control unit (power control means)
32 Charging / discharging terminal (power supply means, charging means)
321 Power transfer unit 322 Detection unit 323 Communication unit 324 Storage unit 325 Input unit 326 Display unit 327 Calculation control unit (power control means)
4 public hall (external system facilities)
41 Switchboard 42 Controller 43 Emergency battery P Parking space E Commercial power supply (external power supply)

Claims (7)

A power supply system that supplies electric power from a plurality of electric vehicles to an external system facility,
The electric vehicle includes a vehicle storage battery,
A power supply facility is installed in a parking space where the plurality of electric vehicles are parked. A power supply unit that discharges the storage battery for the vehicle to supply power to the external system facility, and the power supply unit Power control means for controlling
The power control means controls the power supply means to stop discharging from the vehicle storage battery when the remaining capacity of the vehicle storage battery reaches a predetermined value.
A power supply system characterized by that. The power control means detects that power supply from an external system power supply has been stopped, and controls the power supply means to start discharging from the vehicle storage battery;
The power supply system according to claim 1. The power supply facility is provided with notifying means for notifying that the remaining capacity of the vehicle storage battery has reached a predetermined value,
The power supply system according to any one of claims 1 and 2. The power supply facility comprises a discharge amount measuring means for measuring a discharge amount from the vehicle storage battery,
The power supply system of any one of Claims 1-3 characterized by the above-mentioned. The power supply facility comprises a charging means for charging the vehicle storage battery by receiving power supply from an external power supply.
The power supply system of any one of Claims 1-4 characterized by the above-mentioned. The power supply facility comprises charge amount measuring means for measuring a charge amount to the vehicle storage battery,
The power supply system according to claim 5. A power supply method for supplying power from a plurality of electric vehicles to an external system facility,
When the plurality of electric vehicles are parked in a parking space, the vehicle storage battery of the electric vehicle is discharged to supply power to the external system facility, and when the remaining capacity of the vehicle storage battery reaches a predetermined value, the vehicle Stop discharging from the storage battery,
The power supply method characterized by the above-mentioned.

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