Vehicle matching system

Abstract

To provide a vehicle matching system capable of properly identifying electric vehicles connected to external charging / discharging devices.SOLUTION: The vehicle matching system compares various information acquired from electric vehicles with various information acquired from external charging / discharging devices to identify an electric vehicle that is connected to the external charging / discharging device. With this, electric vehicles connected to the external charging / discharging devices even when multiple external charging / discharging devices are installed in proximity can be properly identified. Additionally, when it is determined that charge / discharge execution statuses and remaining charge amounts of at least two electric vehicles of the electric vehicles connected to the external charge / discharge devices are the same, the external charge / discharge device is controlled so that the charge / discharge execution statuses of the electric vehicles are made different from each other. With this, even when the charging / discharging statuses and the remaining charge amounts of the electric vehicles are the same, the electric vehicles connected to external charging / discharging devices can be properly identified.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present invention relates to a vehicle verification system that identifies an electric vehicle connected to an external charge / discharge device. [Background technology]

[0002] A well-known vehicle verification system includes a plurality of electric vehicles, each equipped with a battery that exchanges power with an electric motor serving as a power source; a plurality of fixed external charging / discharging devices to which the electric vehicles are connected to enable charging / discharging of the batteries; and an external control device separate from the electric vehicles and the external charging / discharging devices, which acquires various information from the electric vehicles and the external charging / discharging devices via communication and controls the operation of the external charging / discharging devices. Patent Document 1 discloses an example of such an authentication system. Patent Document 1 discloses a technology for linking electric vehicles and external charging / discharging devices, i.e., identifying electric vehicles connected to external charging / discharging devices, based on location information of the electric vehicles and the external charging / discharging devices, when there are multiple electric vehicles and multiple external charging / discharging devices. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2014-39391 Summary of the Invention [Problem to be solved by the invention]

[0004] The technology of Patent Document 1 is useful in cases where the external charging / discharging device cannot obtain the vehicle's unique identification number from the electric vehicle. However, when multiple external charging / discharging devices are installed in close proximity, it is not possible to identify the electric vehicle connected to the external charging / discharging device simply by comparing location information. In contrast, if the various information includes the battery's charging / discharging status and remaining charge, it is possible to identify the electric vehicle connected to the external charging / discharging device by comparing this information. However, if the charging / discharging status and remaining charge of the electric vehicles are the same, it may not be possible to identify the electric vehicle connected to the external charging / discharging device.

[0005] The present invention has been made against the background of the above circumstances, and its purpose is to provide a vehicle verification system that can appropriately identify an electric vehicle connected to an external charging / discharging device. [Means for solving the problem]

[0006] The gist of a first invention is a vehicle verification system including: (a) a plurality of electric vehicles, each equipped with a battery that receives and transmits power to and from an electric motor serving as a power source; a plurality of fixedly installed external charge / discharge devices to which the electric vehicles are connected, thereby enabling charging and discharging of the batteries; and an external control device separate from the electric vehicles and the external charge / discharge devices, which acquires various types of information via communication from each of the electric vehicles and the external charge / discharge devices and controls operation of the external charge / discharge devices; (b) the external control device acquires the various types of information acquired from the electric vehicles, such as connection information with the external charge / discharge devices, position information of the electric vehicle, a charge / discharge execution state of the battery, and a previous The external control device identifies the electric vehicles connected to the external charging / discharging device by comparing the remaining charge of the battery with the various information acquired from the external charging / discharging device, such as connection information with the electric vehicles, location information of the external charging / discharging device, the charging / discharging execution state, and the remaining charge; and (c) when the external control device determines that the charging / discharging execution state and the remaining charge are the same for at least two of the electric vehicles respectively connected to the external charging / discharging device, it controls the external charging / discharging device so as to make the charging / discharging execution states different between the electric vehicles determined to have the same charging / discharging execution state and remaining charge. [Effects of the Invention]

[0007] According to the first aspect of the present invention, various information acquired from an electric vehicle is compared with various information acquired from an external charging / discharging device to identify the electric vehicle connected to the external charging / discharging device. The various information acquired from the electric vehicle includes connection information with the external charging / discharging device, location information of the electric vehicle, a charging / discharging state of the battery, and a remaining charge of the battery. The various information acquired from the external charging / discharging device includes connection information with the electric vehicle, location information of the external charging / discharging device, a charging / discharging state of the battery, and a remaining charge of the battery. This makes it possible to appropriately identify the electric vehicle connected to the external charging / discharging device, even if multiple external charging / discharging devices are installed in close proximity. In addition, if it is determined that the charging / discharging state and the remaining charge of the battery are the same for at least two of the electric vehicles connected to the external charging / discharging device, the external charging / discharging device is controlled to change the charging / discharging state between the electric vehicles. This makes it possible to appropriately identify the electric vehicle connected to the external charging / discharging device, even if the charging / discharging state and the remaining charge of the electric vehicles are the same. Therefore, it is possible to appropriately identify the electric vehicle connected to the external charging / discharging device. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a schematic diagram illustrating a basic configuration of a vehicle verification system according to an embodiment of the present invention; [Figure 2] FIG. 10 is a diagram illustrating an example in which the charging and discharging execution states are made different between electric vehicles. [Figure 3] FIG. 3 is a diagram illustrating an example in which the charging and discharging execution states are made different between electric vehicles, and is an embodiment different from that of FIG. 2. [Figure 4] 10 is a flowchart illustrating a main part of the control operation of the server, and is a flowchart illustrating the control operation for appropriately identifying an electric vehicle connected to an external charge / discharge device. [Figure 5] FIG. 1 is a diagram illustrating an example of equipment at a base. [Figure 6] FIG. 10 is a diagram illustrating an example of main power management at a base. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. [Example]

[0010] 1 is a schematic diagram illustrating the basic configuration of a vehicle verification system 10 according to an embodiment of the present invention. In FIG. 1, the vehicle verification system 10 includes a plurality of electric vehicles 20, a plurality of external charging / discharging devices 30, and a server 40.

[0011] The electric vehicles 20 and the external charging / discharging devices 30 are owned at each of a plurality of bases 50. The bases 50 include a first base 50a, a second base 50b, a third base 50c, etc. The electric vehicles 20 and the external charging / discharging devices 30 at the second base 50b and the third base 50c are equivalent to the electric vehicles 20 and the external charging / discharging devices 30 at the first base 50a. The bases 50 are, for example, dealers of the electric vehicles 20, businesses that use the electric vehicles 20, buildings that manage the electric vehicles 20, etc.

[0012] The electric vehicles 20 include a first vehicle 20a, a second vehicle 20b, a third vehicle 20c, etc. Each of the electric vehicles 20 is equipped with an electric motor 22 as a power source, a battery 24 that exchanges power with the electric motor 22, and a communication device 26. The electric vehicles 20 are plug-in hybrid vehicles (also synonymous with PHEVs) or electric vehicles (also synonymous with BEVs) equipped with a battery 24 with a large battery capacity [kWh] that can charge and discharge the battery 24 using an external power supply device such as an external charge / discharge device 30.

[0013] The communication device 26 exchanges various types of information with an on-board electronic control device (not shown), for example, via a cable or the like. The communication device 26 communicates with a server 40 via a known network 100 outside the electric vehicle 20, and exchanges various types of information. The communication device 26 is connected to the network 100, for example, via wireless communication R with a wireless device 110 outside the electric vehicle 20. The wireless device 110 is a transmitting / receiving device connected to the network 100, which transmits and receives various signals via wireless communication R.

[0014] The external charging / discharging device 30 is fixedly installed within the base 50 and is an external power supply device that enables charging / discharging of the battery 24 when the electric vehicle 20 is connected thereto. The external charging / discharging device 30 includes a charging / discharging stand 32 and a status acquisition controller 34 connected to the charging / discharging stand 32 via a cable or the like. The external charging / discharging device 30 includes a first charging / discharging device 30a, a second charging / discharging device 30b, a third charging / discharging device 30c, etc. The charging / discharging stand 32 includes a first charging / discharging stand 32a, a second charging / discharging stand 32b, a third charging / discharging stand 32c, etc. The first charging / discharging device 30a is a combination of the first charging / discharging stand 32a and the status acquisition controller 34. The second charging / discharging device 30b is a combination of the second charging / discharging stand 32b and the status acquisition controller 34. The third charging / discharging device 30c is a combination of the third charging / discharging stand 32c and the status acquisition controller 34. In this embodiment, one status acquisition controller 34 is combined with multiple charging / discharging stands 32, but the configuration may also be such that one status acquisition controller 34 is combined with each of multiple charging / discharging stands 32.

[0015] The charging / discharging station 32 is, for example, a V2H (=Vehicle to Home) station that can be connected to the electric vehicle 20 to charge the electric vehicle 20 or discharge electricity from the electric vehicle 20.

[0016] The status acquisition controller 34 includes an electronic control device (not shown) and a communication device (not shown). The status acquisition controller 34 controls charging and discharging of the electric vehicle 20 connected to the charging and discharging stand 32 by the charging and discharging stand 32. The status acquisition controller 34 exchanges various information with the electric vehicle 20 connected to the charging and discharging stand 32. The status acquisition controller 34 communicates with the server 40 via the network 100 to exchange various information. The status acquisition controller 34 is connected to the network 100 via wireless communication R with the wireless device 110, for example. The status acquisition controller 34 is, for example, a HEMS (Home Energy Management System) or the like.

[0017] The server 40 is an external control device that exists separately from the electric vehicle 20 and the external charging / discharging device 30, and is a computer equipped with a CPU and the like that is connected to the network 100. The server 40 is connected to each of the electric vehicle 20 and the external charging / discharging device 30 via wireless communication. The server 40 is a device that receives, processes, analyzes, stores, and provides various types of information. The server 40 acquires various types of information from each of the electric vehicle 20 and the external charging / discharging device 30 via communication. The server 40 transmits commands to control the operation of the external charging / discharging device 30.

[0018] The server 40 acquires various information from the electric vehicle 20, such as connection information with the external charging / discharging device 30, position information of the electric vehicle 20, a charge / discharge execution state of the battery 24, and the remaining charge SOC [%] of the battery 24. The connection information with the external charging / discharging device 30 is information indicating a plug connection state, in which the electric vehicle 20 is connected to one of the charging / discharging stations 32. The position information of the electric vehicle 20 is, for example, host vehicle position information indicating the position (e.g., latitude and longitude) of the electric vehicle 20 based on a GPS signal (trajectory signal) transmitted by a GPS (Global Positioning System) satellite. The charge / discharge execution state of the battery 24 includes a charging state, a discharging state, and a charge / discharge standby state. The charging state of the battery 24 is a state in which the battery 24 is being charged via the external charging / discharging device 30. The discharging state of the battery 24 is a state in which the battery 24 is being discharged via the external charging / discharging device 30. The charge / discharge standby state of the battery 24 is a state in which the battery 24 is waiting to be charged or discharged via the external charging / discharging device 30. The charge / discharge execution state of the battery 24 is synonymous with the status of the battery 24. The remaining charge SOC of the battery 24 is a value indicating the state of charge of the battery 24.

[0019] The server 40 acquires various information from the external charging / discharging device 30, such as connection information with the electric vehicle 20, location information of the external charging / discharging device 30, a charging / discharging execution state of the battery 24, and the remaining charge SOC of the battery 24. The connection information with the electric vehicle 20 is information indicating a vehicle connection state in which any of the electric vehicles 20 is connected to a charging / discharging stand 32. The location information of the external charging / discharging device 30 is, for example, pre-stored information indicating the location (e.g., latitude and longitude) of the external charging / discharging device 30. This location information of the external charging / discharging device 30 may be pre-stored or registered in the server 40, for example. The charging / discharging execution state of the battery 24 acquired from the external charging / discharging device 30 includes the charging state, discharging state, and charging / discharging standby state, as well as the magnitude of charging / discharging power in either the charging state or the discharging state of the battery 24. The remaining charge SOC acquired from the external charging / discharging device 30 is the remaining charge SOC acquired by the external charging / discharging device 30 from the electric vehicle 20 connected to the charging / discharging stand 32. The various information acquired from the external charge / discharge device 30 may also include, for example, the battery capacity of the battery 24.

[0020] The server 40 compares various information acquired from the electric vehicle 20 with various information acquired from the external charging / discharging device 30 to identify the electric vehicle 20 connected to the external charging / discharging device 30. For example, when the electric vehicle 20 is connected to the charging / discharging stand 32, the server 40 determines, based on the location information of the electric vehicle 20, whether the electric vehicle 20 is located near the external charging / discharging device 30, that is, near the base 50 that owns the electric vehicle 20 and the external charging / discharging device 30. When the electric vehicle 20 is located near the base 50, the server 40 determines whether the charge / discharge execution state and remaining charge SOC acquired from the electric vehicle 20 match with the charge / discharge execution state and remaining charge SOC acquired from the external charging / discharging device 30 to which the electric vehicle 20 is connected. If the server 40 determines that the two match, the server 40 determines that the connection between the electric vehicle 20 and the external charging / discharging device 30 matches, and identifies which of the multiple electric vehicles 20 owned by the server 40 is the electric vehicle 20 connected to the external charging / discharging device 30.

[0021] In this way, the server 40 identifies electric vehicles 20 that are connected to the external charging / discharging device 30 and that are owned at the same base 50 as the external charging / discharging device 30. In other words, the server 40 links the electric vehicles 20 with the charging / discharging stands 32 and determines which electric vehicles 20 are connected to which charging / discharging stands 32. The server 40 has an authentication function for linking the electric vehicles 20 with the charging / discharging stands 32. Note that the external charging / discharging device 30 cannot obtain a vehicle-specific identification number from the electric vehicles 20, and therefore the server 40 can obtain the vehicle-specific identification number from the electric vehicles 20 but cannot obtain the vehicle-specific identification number from the external charging / discharging device 30.

[0022] However, when multiple electric vehicles 20 connected to multiple nearby external charging / discharging devices 30 have the same charge / discharge execution state and remaining charge state of charge (SOC), it is difficult to determine which electric vehicle 20 is connected to which charging / discharging stand 32. In such a case, the server 40 transmits to the status acquisition controller 34 a command to make the charge / discharge execution state of the electric vehicles 20 different from each other.

[0023] In other words, when the server 40 determines that the discharge execution state and the remaining charge SOC of at least two of the electric vehicles 20 connected to the external charging / discharging device 30 are the same, the server 40 controls the external charging / discharging device 30 so as to make the charge / discharge execution state different between the electric vehicles 20 determined to have the same charge / discharge execution state and remaining charge SOC.

[0024] FIG. 2 is a diagram illustrating an example in which the charge / discharge execution states of the electric vehicles 20 are different from one another. In FIG. 2, the electric vehicles 20 (20a, 20b, 20c) are each connected to an external charge / discharge device 30 (30a, 30b, 30c) at the same base 50. The electric vehicles 20 are each in a charging state and have a state of charge (SOC) of 80%. The discharge execution states and state of charge (SOC) are the same. Therefore, in order to link the electric vehicles 20 to the charging / discharging stands 32, the server 40 transmits a standby command to the status acquisition controller 34 at the first charging / discharging stand 32a to switch the charging / discharging execution state to a charging / discharging standby state. Additionally, the server 40 transmits a charge command to the status acquisition controller 34 at the second charging / discharging stand 32b to maintain the charging / discharging execution state in the charging state. Furthermore, the server 40 transmits a discharge command to the status acquisition controller 34 at the third charging / discharging stand 32c to switch the charging / discharging execution state to the discharging state. Since the charging state, discharging state, and charge / discharge standby state differ between the electric vehicles 20, it is determined which electric vehicle 20 is connected to which charging / discharging stand 32.

[0025] In this way, the server 40 differentiates the charge and discharge execution states of the electric vehicles 20 by differentiating the charge state, discharge state, and charge and discharge standby state between the electric vehicles 20. The server 40 then identifies the electric vehicles 20 connected to the external charge and discharge device 30 based on the differences in the charge state, discharge state, and charge and discharge standby state.

[0026] FIG. 3 is a diagram illustrating an example in which the charge / discharge execution states of the electric vehicles 20 are different from each other, and is an embodiment different from that of FIG. 2. In FIG. 3, the electric vehicles 20 (20a, 20b, 20c) are each connected to an external charge / discharge device 30 (30a, 30b, 30c) at the same base 50. The electric vehicles 20 are each in a charge / discharge standby state and have a state of charge (SOC) of 100%. The discharge execution state and state of charge (SOC) are the same. Therefore, to link the electric vehicles 20 with the charging / discharging stands 32, a command is sent from the server 40 to the status acquisition controller 34 at the first charging / discharging stand 32a to switch the charging / discharging execution state to a discharging state and set the discharge power to 0 kW. Additionally, a command is sent from the server 40 to the status acquisition controller 34 at the second charging / discharging stand 32b to switch the charging / discharging execution state to a discharging state and set the discharge power to 1 kW. Furthermore, a command to switch the charge / discharge execution state to a discharging state and to set the discharge power to 2 kW at the third charging / discharging stand 32c is sent from the server 40 to the status acquisition controller 34. After a while, the state of charge SOC of the second vehicle 20b connected to the second charging / discharging stand 32b is changed to 99%, and the state of charge SOC of the third vehicle 20c connected to the third charging / discharging stand 32c is changed to 98%. As a result, the charge / discharge execution states of the electric vehicles 20 are the same charged state but the state of charge SOC differs, so it is possible to determine which electric vehicle 20 is connected to which charging / discharging stand 32. If the state of charge SOC is low, a charge command for a different charging power is sent from the server 40.

[0027] In this way, the server 40 differentiates the magnitude of charge / discharge power in either the charging state or the discharging state between the electric vehicles 20, thereby differentiating the charge / discharge execution states between the electric vehicles 20. The server 40 then identifies the electric vehicles 20 connected to the external charging / discharging device 30 based on the difference in the remaining charge SOC that is changed according to the difference in the charge / discharge power.

[0028] FIG. 4 is a flowchart illustrating the main control operations of the server 40, specifically, the control operations for appropriately identifying the electric vehicle 20 connected to the external charging / discharging device 30, and is executed, for example, repeatedly.

[0029] In FIG. 4, each step in the flowchart corresponds to a function of the server 40. In step (hereinafter, "step" will be omitted) S10, it is determined whether the electric vehicle 20 is connected to a charging / discharging station. For example, it is determined whether a V2H plug from a charging / discharging station is connected to the electric vehicle 20. If the determination in S10 is negative, the routine is terminated. If the determination in S10 is positive, it is determined in S20 based on the position information of the electric vehicle 20 whether the electric vehicle 20 is near the base 50 that owns the electric vehicle 20. If the determination in S20 is positive, it is determined in S30 whether multiple electric vehicles 20 are connected to the external charging / discharging device 30 at the same base 50, and whether the discharging state and the state of charge SOC of at least two electric vehicles 20 are the same. If the determination in S30 is positive, a command to change the charging / discharging state of the electric vehicles 20 that are determined to have the same discharging state and state of charge SOC is sent to the state acquisition controller 34 in S40. If the determination in S30 is negative, or following S40, in S50 it is determined whether the various information acquired from the electric vehicle 20 matches the various information acquired from the external charging / discharging device 30. If the determination in S50 is positive, in S60 the electric vehicle 20 connected to the charging / discharging stand 32 is identified. If the determination in S20 is negative, or if the determination in S50 is negative, in S70 the electric vehicle 20 connected to the charging / discharging stand 32 is not identified.

[0030] Here, when the electric vehicle 20 and the charging / discharging station 32 are linked, the remaining charge SOC can be managed in accordance with a user operation, for example, by setting the charging setting of the electric vehicle 20 to 100% by a specified time. Alternatively, when the discharge execution state and remaining charge SOC of electric vehicles 20 connected to nearby charging / discharging stations 32 are the same, the remaining charge SOC can be managed in accordance with a user operation, for example, by setting the electric vehicle 20 that is to be preferentially charged for an earlier departure to a charging state and setting the other electric vehicle 20 to a discharging state or a charging / discharging standby state. Alternatively, power usage at the site 50 can be managed in accordance with a user operation, for example, by setting the discharging setting of the electric vehicle 20 to supply power to the electrical devices 120, 130 (see FIG. 5 ) within the site 50. Note that the user here may be, for example, an administrator of the site 50.

[0031] FIG. 5 is a diagram illustrating an example of equipment at base 50. FIG. 6 is a diagram illustrating an example of management of primary power at base 50. In FIG. 5, electric vehicle 20 and external charging / discharging device 30 are owned by base 50, which receives primary power from public power grid 200, along with electrical appliances 120 and 130 that use the primary power. Electric appliances 120 and 130 are, for example, air conditioning equipment. It is desirable to set the maximum value of primary power used at base 50 to a predetermined power level, such as a contracted power level. Therefore, during a time period when the peak of primary power usage is expected to exceed the predetermined power level, as shown in FIG. 5, for example, a discharge command is transmitted from server 40 to status acquisition controller 34 at first charging / discharging station 32a to set the charging / discharging execution state to a discharging state. Then, power from battery 24 of first vehicle 20a is supplied to electrical appliances 120 and 130. As a result, the peak of primary power is set to a predetermined power level or less, as shown in FIG. 6. The vehicle 20 that will be the source of power supplied to the electrical devices 120 and 130 is selected taking into consideration, for example, the state of charge (SOC) and future vehicle usage conditions.

[0032] In this way, the server 40 causes the external charging / discharging device 30 to supply discharged power from the electric vehicle 20 whose connection to the external charging / discharging device 30 has been identified to the electrical equipment 120, 130 in place of part or all of the main power used by the electrical equipment 120, 130, so that the maximum value of the main power used at the base 50 is equal to or less than a predetermined power.

[0033] As described above, according to this embodiment, various pieces of information acquired from the electric vehicle 20 are compared with various pieces of information acquired from the external charging / discharging device 30 to identify the electric vehicle 20 connected to the external charging / discharging device 30. As a result, even when multiple external charging / discharging devices 30 are installed in close proximity, the electric vehicle 20 connected to the external charging / discharging device 30 can be appropriately identified. In addition, when it is determined that the discharging execution state and the state of charge SOC of the electric vehicles 20 connected to the external charging / discharging device 30 are the same, the external charging / discharging device 30 is controlled to change the charging / discharging execution state between the electric vehicles 20. As a result, even when the charging / discharging execution state and state of charge SOC of the electric vehicles 20 are the same, the electric vehicle 20 connected to the external charging / discharging device 30 can be appropriately identified. Therefore, the electric vehicle 20 connected to the external charging / discharging device 30 can be appropriately identified.

[0034] Furthermore, according to this embodiment, the charging state, discharging state, and charging / discharging standby state are made different among the electric vehicles 20, thereby making the charging / discharging execution states different among the electric vehicles 20. Then, the electric vehicles 20 connected to the external charging / discharging device 30 are identified based on the differences in the charging state, discharging state, and charging / discharging standby state. This makes it possible to appropriately identify the electric vehicles 20 connected to the external charging / discharging device 30 even when the charging / discharging execution states and remaining charge amounts of the electric vehicles 20 are the same.

[0035] Furthermore, according to this embodiment, the magnitude of charge / discharge power in either the charging state or the discharging state is made different between the electric vehicles 20, thereby making the charge / discharge execution states different between the electric vehicles 20. Then, the electric vehicles 20 connected to the external charging / discharging device 30 are identified based on the difference in the state of charge SOC that is changed according to the difference in charge / discharge power. As a result, even when the charge / discharge execution states and state of charge of the electric vehicles 20 are the same, it is possible to appropriately identify the electric vehicles 20 connected to the external charging / discharging device 30.

[0036] Furthermore, according to this embodiment, an electric vehicle 20 and an external charging / discharging device 30 are owned by each of a plurality of bases 50, and the server 40 is connected via wireless communication to each of the electric vehicle 20 and the external charging / discharging device 30. This makes it possible to appropriately identify, for each base 50, the electric vehicle 20 connected to the external charging / discharging device 30.

[0037] Furthermore, according to this embodiment, the external charging / discharging device 30 supplies discharged power from the electric vehicle 20 whose connection to the external charging / discharging device 30 has been identified to the electric devices 120, 130 in place of part or all of the main power used by the electric devices 120, 130. This prevents or suppresses the maximum value of the main power used at the base 50 from exceeding a predetermined power.

[0038] Although the embodiments of the present invention have been described in detail above with reference to the drawings, the present invention can also be applied to other embodiments.

[0039] For example, in the above-described embodiment, the server 40 is exemplified as an external control device separate from the electric vehicle 20 and the external charging / discharging device 30, but this is not limiting. For example, this external control device may be a computer owned by each base 50. In this case, the present invention can be applied to each base 50 without the electric vehicle 20 and the external charging / discharging device 30 being connected to the network 100, respectively.

[0040] It should be noted that the above is merely one embodiment, and the present invention can be embodied in various forms with various modifications and improvements based on the knowledge of those skilled in the art. [Explanation of symbols]

[0041] 10: Vehicle matching system 20: Electric vehicle 22: Electric motor (power source) 24: Battery 30: External charge / discharge device 40: Server (external control device) 50: Base 120, 130: Electric equipment 200: Power system R: Wireless communication

Claims

1. A vehicle verification system comprising: a plurality of electric vehicles, each equipped with a battery that receives and transmits power to and from an electric motor serving as a power source; a plurality of fixedly installed external charging / discharging devices to which the electric vehicles are connected, thereby enabling charging and discharging of the batteries; and an external control device separate from the electric vehicles and the external charging / discharging devices, which acquires various types of information via communication from each of the electric vehicles and the external charging / discharging devices and controls operation of the external charging / discharging devices, the external control device collates the various information acquired from the electric vehicle, including connection information with the external charging / discharging device, position information of the electric vehicle, a charge / discharge execution state of the battery, and a remaining charge amount of the battery, with the various information acquired from the external charging / discharging device, including connection information with the electric vehicle, position information of the external charging / discharging device, the charge / discharge execution state, and the remaining charge amount, to identify the electric vehicle connected to the external charging / discharging device; When the external control device determines that the charge / discharge execution state and the remaining charge amount are the same for at least two of the electric vehicles connected to the external charge / discharge device, the external control device controls the external charge / discharge device so as to make the charge / discharge execution state different for the electric vehicles determined to have the same charge / discharge execution state and remaining charge amount.

2. the external control device causes a charging state, a discharging state, and a charging / discharging standby state, which are included in the charging / discharging execution state, to differ between the electric vehicles, thereby causing the charging / discharging execution states to differ between the electric vehicles; 2. The vehicle verification system according to claim 1, wherein the external control device identifies the electric vehicle connected to the external charging / discharging device based on differences between the charging state, the discharging state, and the charging / discharging standby state.

3. the external control device causes the electric vehicles to have different levels of charge / discharge power in a state determined to be either a charging state or a discharging state, which is included in the charging / discharging execution state acquired from the external charging / discharging device, by causing the electric vehicles to have different levels of charge / discharge power in the charging / discharging execution state acquired from the external charging / discharging device, 2. The vehicle verification system according to claim 1, wherein the external control device identifies the electric vehicle connected to the external charging / discharging device based on the difference in the remaining charge amount that is changed according to the difference in the charging / discharging power.

4. the electric vehicles and the external charging / discharging devices are owned by each of a plurality of bases, the external control device is a server connected to each of the electric vehicle and the external charging / discharging device via wireless communication, 4. The vehicle verification system according to claim 1, wherein the server identifies the electric vehicle connected to the external charging / discharging device and owned at the same base as the external charging / discharging device.

5. the electric vehicle and the external charging / discharging device are owned at a base that receives a supply of main power from a public power grid, together with electrical equipment that uses the main power; 4. The vehicle verification system according to claim 1, wherein the external control device controls the external charging / discharging device to supply discharged power from the electric vehicle, whose connection to the external charging / discharging device has been identified, to the electric device in place of part or all of the main power used by the electric device, so that a maximum value of the main power used at the base is equal to or less than a predetermined power.

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