Trading support device, trading support system, and trading support method

Abstract

To provide a trading support device capable of supporting appropriate energy trading for both a power seller and a power buyer in a system for charging between vehicles.SOLUTION: A trading support device 100 comprises a purchase information obtaining unit 111 that obtains purchase information. The trading support device 100 further comprises a purchase information transmitting unit 112 that transmits the purchase information, and a sales information obtaining unit 113 that obtains sales information. The trading support device 100 further comprises a sales information transmitting unit 114 that transmits the sales information to a buyer terminal, and a purchase consideration result obtaining unit 115 that obtains a purchase consideration result. The trading support device 100 further comprises a purchase consideration result transmitting unit 116 that transmits the purchase consideration result to a seller terminal, and a sales consideration result obtaining unit 117 that obtains a sales consideration result. The trading support device 100 further comprises a trading establishment determination unit 118 that determines whether energy trading is established based on the purchase information, the sales information, the purchase consideration result, and the sales consideration result.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a trading support device, a trading support system, and a trading support method. [Background technology]

[0002] Conventionally, a technology has been proposed for charging electric vehicles and the like, in which charging and discharging are performed by directly connecting the vehicles with a cable. Patent Document 1 discloses a vehicle and a control method therefor that controls charging and discharging between vehicles depending on the communication situation while taking into consideration payment after charging and discharging is completed. The control method disclosed in Patent Document 1 ensures a communication environment between the vehicles and realizes suitable charging and discharging processing and payment processing even when poor communication conditions prevent sufficient communication speed from being obtained in communication between the vehicles and the server. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-136202 Summary of the Invention [Problem to be solved by the invention]

[0004] In the control method disclosed in Patent Document 1, after charging and discharging are completed, payment is made based on the amount of charge supplied and information on the location where charging was performed. For example, this control method controls so that the amount paid is higher in remote areas such as mountainous regions compared to urban areas. However, in this control method, payment is processed for the amount determined after charging and discharging are completed, so if either the power supplier (seller) or the charger (purchaser) is dissatisfied with the amount, problems may arise with the payment that has been made.

[0005] The present invention has been made in view of the problems inherent in the conventional technology, and an object of the present invention is to provide a trading support device that can support appropriate energy trading between the seller and the buyer of electricity in a vehicle-to-vehicle charging system. [Means for solving the problem]

[0006] A buying and selling support device according to an embodiment of the present invention is a buying and selling support device for supporting the buying and selling of energy between vehicles, and includes: a purchasing information acquisition unit that acquires purchasing information including energy purchasing conditions via a purchaser terminal operated by a prospective buyer who wishes to purchase energy; a purchasing information transmission unit that transmits the purchasing information to a seller terminal operated by a potential seller who is able to sell energy; a sales information acquisition unit that acquires sales information including energy sales conditions from the potential seller via the seller terminal; a sales information transmission unit that transmits the sales information transmitted from the potential seller to the potential buyer's buyer terminal; a purchasing consideration result acquisition unit that acquires purchase consideration results transmitted from the potential buyer via the purchaser terminal; a purchasing consideration result transmission unit that transmits the purchase consideration results to the potential seller's seller terminal; a sales consideration result acquisition unit that acquires the sales consideration results transmitted from the potential seller via the seller terminal; a buying and selling success determination unit that determines whether the buying and selling of energy will be successful based on the buying information, selling information, buying and selling success results, and selling success results; and a notification unit that notifies the buying and selling success determination unit's purchaser terminal of the potential buyer and the potential seller's seller terminal of the result determined by the buying and selling success determination unit.

[0007] A sales support system according to another aspect of the present invention comprises the sales support device described above, a purchaser terminal operated by a prospective purchaser, a seller terminal operated by a potential seller, and a V2V cable for connecting the prospective purchaser's vehicle and the potential seller's vehicle and charging energy therebetween.

[0008] A buying and selling support method according to another aspect of the present invention is a buying and selling support method executed by a computer for supporting the buying and selling of energy between vehicles, which method includes: obtaining purchasing information including energy purchasing conditions via a buyer terminal operated by a prospective buyer who wishes to purchase energy; transmitting the purchasing information to a seller terminal operated by a prospective seller who is able to sell the energy; obtaining sales information including energy sales conditions from the prospective seller via the seller terminal; transmitting the sales information transmitted from the prospective seller to the buyer terminal of the prospective buyer; obtaining a purchase consideration result transmitted from the prospective buyer via the buyer terminal; transmitting the purchase consideration result to the seller terminal of the prospective seller; obtaining a sales consideration result transmitted from the prospective seller via the seller terminal; determining whether the energy buying and selling will be concluded based on the buying information, selling information, buying consideration result, and selling consideration result; and notifying the buyer terminal of the prospective buyer and the seller terminal of the prospective seller of the result of the determination. [Effects of the Invention]

[0009] According to the present invention, it is possible to provide a buying and selling support device that can support appropriate energy buying and selling for both the seller and buyer of electricity in a system for charging between vehicles. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram showing a configuration of a buying and selling support system according to an embodiment of the present invention; [Figure 2] FIG. 2 is a diagram showing the configuration of a V2V cable applied in the buying and selling support system according to the present embodiment. [Figure 3] FIG. 1 is a diagram illustrating a schematic configuration of a V2V cable applied in the buying and selling support system according to the present embodiment. [Figure 4] 1 is a diagram for explaining the configuration of a buying and selling support system according to an embodiment of the present invention; [Figure 5] 1 is a diagram showing the configuration of an on-board device mounted on a vehicle that is applied to a buying and selling assistance system according to an embodiment of the present invention. [Figure 6] 1 is a diagram showing a configuration of a buying and selling support device according to an embodiment of the present invention; [Figure 7] 1 is a diagram showing a functional configuration of a buying and selling support device according to an embodiment of the present invention; [Figure 8A] FIG. 2 is a diagram showing an example of purchase information applied in the buying and selling support system according to the present embodiment. [Figure 8B] 1 is a diagram showing an example of sales information applied in the buying and selling support system according to the present embodiment. FIG. [Figure 9] FIG. 2 is a sequence diagram for explaining the processing of the buying and selling support system according to the present embodiment. [Figure 10] 10 is a flowchart showing an example of processing of the buying and selling support device according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] The trading support system 10 and trading support device 100 according to this embodiment will be described in detail below with reference to the drawings. Note that the dimensional proportions in the drawings are exaggerated for the sake of explanation and may differ from the actual proportions. In addition, in the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals.

[0012] (Configuration of trading support system 10) 1 is a diagram showing the configuration of a trading support system 10 according to this embodiment. In this embodiment, the trading support system 10 is a system for supporting the trading of energy between vehicles.

[0013] As shown in Fig. 1, the buying and selling support system 10 includes a buying and selling support device 100, a vehicle 30 equipped with an on-board device 300, a network 40, a purchaser terminal 50, and a seller terminal 60. The purchaser terminal 50 is a terminal operated by a prospective buyer 51 who wishes to purchase energy. The seller terminal 60 is a terminal operated by a prospective seller 61 who sells energy.

[0014] The buying and selling support device 100 is provided as a function in a computer such as a server. The buying and selling support system 10 also includes a V2V cable 200 that connects the vehicle 30 of the prospective buyer 51 and the vehicle 30 of the potential seller 61 and charges energy between them.

[0015] In addition, the sales support system 10 enables communication between the sales support device 100, the vehicle-mounted device 300 of the vehicle 30, the purchaser terminal 50, the seller terminal 60, and the communication unit provided in the V2V cable 200 via the network 40.

[0016] In the buying and selling support system 10, a potential purchaser 51 requests, via a purchaser terminal 50 possessed by the potential purchaser 51, that energy be charged to the battery of the potential purchaser's 51 vehicle 30. The information requested by the potential purchaser 51 is sent via the network 40 to a buying and selling support device 100 provided in a server.

[0017] The buying and selling support device 100 transmits the purchase information to a seller candidate 61 who can sell the energy based on the purchase information sent from the prospective buyer 51. Note that, although the example shown in FIG. 1 schematically shows a case where there is one seller candidate 61, there may be multiple seller candidates 61.

[0018] The potential seller 61 transmits sales information including location information, the unit price of energy, etc. to the sales support device 100 based on the purchase information transmitted from the sales support device 100. The sales support device 100 transmits the acquired sales information to the prospective buyer 51.

[0019] Based on the received sales information, the potential purchaser 51 considers whether or not to purchase energy under the sales conditions included in the sales information. The potential purchaser 51 also transmits the results of the purchase consideration to the buying and selling support device 100.

[0020] The buying and selling support device 100 transmits the purchase consideration results transmitted from the prospective buyer 51 to the seller candidate 61. The seller candidate 61 considers whether to sell the energy based on the purchase consideration results. The seller candidate 61 also transmits the considered sales consideration results to the buying and selling support device 100.

[0021] Based on the received sales review results, the buying and selling support device 100 determines whether or not the energy purchase and sale between the prospective purchaser 51 and the potential seller 61 will be concluded, and transmits the determination result to the prospective purchaser 51 and the potential seller 61.

[0022] Upon receiving information that the sale has been concluded, the seller candidate 61 moves the vehicle 30 to the location of the prospective buyer 51. After the vehicle 30 of the seller candidate 61 arrives at the location of the prospective buyer 51, the V2V cable 200 is attached to the vehicle 30 of the prospective buyer 51 and the vehicle 30 of the seller candidate 61, and energy is charged. Thereafter, the settlement of the energy sale is made based on the amount of energy actually charged.

[0023] Fig. 2 is a diagram showing the configuration of V2V cable 200 used in buying and selling assistance system 10 according to this embodiment. As shown in Fig. 2, V2V cable 200 is configured to include charging connector 210, power feeding connector 220, booster 230, and cable control unit 240. V2V cable 200 also includes cable 250 for connecting charging connector 210 and power feeding connector 220. V2V cable 200 also includes cable 251 for connecting charging connector 210 and cable control unit 240.

[0024] 3 is a diagram schematically illustrating the configuration of a V2V cable 200 applied to the buying and selling assistance system 10 according to this embodiment. The vehicle 30 includes a high-voltage battery 31 (high-voltage BATT). The vehicle 30 also includes a BMS 310 (battery management system) that manages the high-voltage battery 31. The BMS 310 acquires, for example, the remaining battery charge of the high-voltage battery 31.

[0025] The charging connector 210 is connected to the BMS 310 and is compatible with voltages from DC 100 V to DC 2000 V. The cable control unit 240 acquires the remaining battery capacity of the high-voltage battery 31 from the BMS 310 via an antenna and enables transmission of the remaining battery capacity to the purchaser terminal 50. Note that the remaining battery capacity information acquired by the in-vehicle device 300 (described later) may be transmitted to the purchaser terminal 50.

[0026] The booster 230 is a booster that can boost the voltage of the vehicle 30 on the power supply side and charge the high voltage battery 31 of the vehicle 30 on the charging side, and is compatible with voltages from DC 100V to DC 2000V.

[0027] Fig. 4 is a diagram for explaining the configuration of the buying and selling support system 10 according to this embodiment. In the example shown in Fig. 4, the configuration is shown in which the high-voltage battery 31 of the vehicle 30 connected to the charging-side connector 210 is being charged via a booster 230 from the high-voltage battery 31 of the vehicle 30 connected to the power-feeding-side connector 220.

[0028] In the example shown in FIG. 4, the prospective purchaser 51 and the potential seller 61 acquire information about the remaining battery capacity of the high-voltage battery 31 on the power supply side and the charging side via the cable control unit 240 of the V2V cable 200.

[0029] In addition, the prospective purchaser 51 may send a control instruction to the cable control unit 240 via the purchaser terminal 50 to control the charging connector 210, the power supply connector 220, and / or the booster 230. Similarly, the potential seller 61 may send a control instruction to the cable control unit 240 via the seller terminal 60 to control the charging connector 210, the power supply connector 220, and / or the booster 230.

[0030] The control of the charging connector 210, the power supply connector 220, and / or the booster 230 by the prospective purchaser 51 and the potential seller 61 is, for example, starting and stopping charging, setting conditions, and changing settings.

[0031] (Configuration of the vehicle-mounted device 300) Fig. 5 is a block diagram showing the configuration of an in-vehicle device 300 mounted on a vehicle 30. As shown in Fig. 5, the in-vehicle device 300 includes a CPU 310. The in-vehicle device 300 also includes a speed signal IF 331, an engine signal IF 332, a GPS (Global Positioning System) IF 333, an external input IF 334, a sensor signal IF 335, and a battery state signal IF 336. The in-vehicle device 300 also includes a wide-area communication module 341, a non-volatile memory 342, a volatile memory 343, an SD card 344, a SW input unit 345, and an LCD (Liquid Crystal Display) 346.

[0032] The CPU 310 executes pre-installed programs to realize various functions required for the vehicle-mounted device 300. The main operations of the CPU 310 will be described later.

[0033] The speed signal IF 331 converts a predetermined vehicle speed signal output from the vehicle side into a signal suitable for input processing by the CPU 310. The CPU 310 can grasp the traveling speed and traveling distance of the vehicle 30 by monitoring the number of pulses and the signal period of the vehicle speed signal.

[0034] The engine signal IF 332 converts a predetermined engine rotation signal output from the vehicle side into a signal suitable for input processing by the CPU 310. The CPU 310 can grasp the engine rotation speed (rpm) by monitoring the number of pulses and the signal period of the engine rotation signal.

[0035] The GPSIF 333 is used to input signals from a GPS receiver (not shown) to the CPU 310. The GPS receiver receives radio waves from multiple GPS (Global Positioning System) satellites and can calculate the current position of the vehicle 30, which is the reception point. The CPU 310 can acquire information about the current position from the GPS receiver via the GPSIF 333.

[0036] The external input IF 334 converts a predetermined external signal into a signal suitable for input processing by the CPU 310. For example, a signal indicating the position of a gear stage is input as the predetermined external signal. In addition, a signal indicating the magnitude of acceleration applied to the vehicle 30 can be input to the external input IF 334 as an external signal.

[0037] The sensor signal IF 335 is used to input to the CPU 310 information acquired by sensors provided on the vehicle 30, such as an angular velocity sensor, a weight sensor, and a temperature sensor.

[0038] The battery state signal IF 336 is used to input a signal indicating the state of the battery of the vehicle 30 to the CPU 310. In this embodiment, the information indicating the state of the battery is, for example, information indicating the remaining charge of the battery.

[0039] The wide-area communication module 341 has a function of establishing a wireless communication line with, for example, a wireless base station (not shown) provided by a mobile communication carrier, etc., and enabling wide-area wireless communication. The wide-area communication module 341 can communicate with the trading support device 100 via an antenna (not shown) and the network 40.

[0040] The nonvolatile memory 342 is an electronic device such as a flash memory that can read data and rewrite the stored data by accessing the CPU 310. The nonvolatile memory 342 is used to store data such as various parameters, constant data, and programs used by the in-vehicle device 300.

[0041] The volatile memory 343 is a semiconductor memory device that can read and write data freely by accessing it from the CPU 310. The volatile memory 343 is used to temporarily store various data that the CPU 310 handles.

[0042] The SD card 344 is detachably connected to the vehicle-mounted device 300 using a predetermined card interface (not shown). The SD card 344 is used to store various data to be recorded by the vehicle-mounted device 300, such as operation data of the vehicle 30.

[0043] The SW input unit 345 includes switches that generate signals representing the operational states of a plurality of buttons for receiving input operations from a user such as the driver of the vehicle 30. For example, the switch signals acquired by the SW input unit 345 include an ON / OFF signal of an ignition SW (not shown), an ON / OFF signal of a brake SW (not shown), an ON / OFF signal of a blinker SW (not shown), etc. The signals representing the operational states of the buttons (SWs) are input from the SW input unit 345 to the CPU 310.

[0044] The LCD 346 is positioned on the front of the housing of the vehicle-mounted device 300 in a position that is easily visible to the driver, and is used under the control of the CPU 310 to display the operating status of the vehicle-mounted device 300 and to display information required for user input operations.

[0045] (Configuration of the buying and selling support device 100) Fig. 6 is a block diagram showing the configuration of the server. As shown in Fig. 6, the server has a trading support device 100 as a function. In this embodiment, the trading support device 100 is configured by a general computer including a control unit 110, a storage unit 120, an input / output IF 130 (Interface), and a communication IF 140. The control unit 110 and the storage unit 120 will be described in detail later.

[0046] Furthermore, when the purchaser terminal 50 and the seller terminal 60 are realized by a mobile personal computer, a smartphone, a tablet, or the like, the configuration thereof may be the same as the configuration shown in the block diagram of FIG.

[0047] The input / output IF 130 is, for example, a component (interface) for a user to exchange data with the buying and selling support apparatus 100. The input / output IF 130 includes, for example, an input IF and an output IF (not shown).

[0048] The input IF in the input / output IF 130 has an interface function for the user to input various information, and information is input from outside the trading support device 100. The user inputs information into the input IF via, for example, a keyboard, a mouse, a touch panel, a trackball, or a voice recognition device connected to the trading support device 100. The input IF can also input information as a data input terminal for inputting data from an external storage device (not shown) or the like.

[0049] The output IF in the input / output IF 130 can display purchase information and sales information (described later) on a display device (not shown) connected to the buying and selling support device 100. The display device is, for example, a display device, a projector device, or the like.

[0050] The communication IF 140 is an interface that enables mutual communication between the buying and selling support device 100, the vehicle-mounted device 300 of the vehicle 30, the purchaser terminal 50, and the seller terminal 60 via the network 40.

[0051] (Functions of the trading support device 100) Fig. 7 is a block diagram showing the functional configuration of the buying and selling support device 100 according to this embodiment. As shown in Fig. 7, the control unit 110 of the buying and selling support device 100 includes, as its functions, a purchase information acquisition unit 111, a purchase information transmission unit 112, a sales information acquisition unit 113, and a sales information transmission unit 114. The control unit 110 also includes, as its functions, a purchase consideration result acquisition unit 115, a purchase consideration result transmission unit 116, a sales consideration result acquisition unit 117, a trade completion determination unit 118, and a notification unit 119. Each of these functions of the control unit 110 will be described later.

[0052] The control unit 110 also operates, for example, an operating system to control the entire trading support device 100. Furthermore, the control unit 110 operates based on a program stored in the storage unit 120 to execute the above-mentioned functions. Note that the program is not limited to being stored in the storage unit 120, and may be stored, for example, in a ROM (Read Only Memory) or the like (not shown) within the trading support device 100.

[0053] As shown in Fig. 7, the storage unit 120 stores information included in a purchase information DB 121 (DB: Database), a sales information DB 122, and a buying and selling status DB 123 as data. Note that there may be one or more storage units 120 for storing these pieces of data. For example, a single storage unit 120 may be configured to store the data in separate areas. Alternatively, the data may be distributed and stored in multiple storage devices installed in physically separate locations.

[0054] 8A is a diagram showing an example of purchase information applied in the buying and selling support system 10 according to this embodiment. The purchase information includes information corresponding to items related to "vehicle ID," "V2V cable connection," "remaining battery level," "current location," "amount of energy desired to be purchased," and "unit price of energy desired to be purchased."

[0055] The "Vehicle ID" field stores identification information for identifying the vehicle 30. The "V2V cable connection" field stores information on whether the V2V cable 200 is connected to the vehicle 30. The information stored in the "V2V cable connection" field enables the buying and selling support device 100 to recognize that the request is for energy charging via the V2V cable 200.

[0056] The "battery remaining capacity" field stores information about the battery remaining capacity of the vehicle 30 of the potential purchaser 51. As described above, the information stored in this "battery remaining capacity" field may be information acquired via the cable control unit 240 of the V2V cable 200. Alternatively, the information stored in "battery remaining capacity" may be information acquired via the battery status signal IF 336 and wide area communication module 341 of the in-vehicle device 300.

[0057] The "Current Location" field stores location information indicating the current location of the vehicle 30 of the potential purchaser 51. The information stored in the "Current Location" field may be information acquired via the GPSIF 333 and the wide-area communication module 341 of the vehicle-mounted device 300.

[0058] The field for the item "Amount of energy desired to purchase" stores information regarding the amount of energy that the prospective purchaser 51 wishes to purchase. For example, the information regarding the "Amount of energy desired to purchase" may be information transmitted from the prospective purchaser 51 after the prospective purchaser 51 checks the "remaining battery level" and inputs the amount of energy required via the purchaser terminal 50.

[0059] The field for "Desired Purchase Energy Unit Price" stores information regarding the energy unit price that the prospective purchaser 51 wishes to purchase. For example, the information regarding the "Desired Purchase Energy Unit Price" may be information that the prospective purchaser 51 inputs the desired energy unit price via the purchaser terminal 50 and that is transmitted from the purchaser terminal 50.

[0060] 8B is a diagram showing an example of sales information applied in the buying and selling support system 10 according to this embodiment. The sales information includes information corresponding to items related to "vehicle ID," "vehicle information," "current location," "estimated arrival time," "remaining battery charge," "salable energy amount," and "desired energy unit price."

[0061] The "Vehicle ID" field stores identification information for identifying the vehicle 30, similar to the purchase information. The "Vehicle Information" field stores information for identifying the vehicle 30 by its appearance. For example, the "Vehicle Information" field stores information about the vehicle model, color, vehicle license plate number, etc. of the vehicle 30. Based on this "Vehicle Information," the potential purchaser 51 can identify the vehicle 30 that has arrived to supply power.

[0062] The "Current Location" field stores location information indicating the current location of the vehicle 30 of the sales candidate 61. The information stored in the "Current Location" field may be information acquired via the GPSIF 333 and wide-area communication module 341 of the vehicle-mounted device 300.

[0063] The "estimated arrival time" field stores the estimated time it takes for the seller candidate 61 to arrive at the current location of the intended purchaser 51. The "estimated arrival time" may be, for example, a time calculated by the seller candidate 61 using a general map application from information indicating the current locations of the seller candidate 61 and the intended purchaser 51 via the seller terminal 60, and may be information transmitted from the seller terminal 60. Alternatively, the "estimated arrival time" may be a time calculated by the control unit 110 of the buying and selling support device 100 based on the purchase information and selling information acquired by the control unit 110.

[0064] The "battery remaining capacity" field stores information about the battery remaining capacity of the vehicle 30 of the sales candidate 61. The information stored in this "battery remaining capacity" field may be information acquired via the battery status signal IF 336 and the wide area communication module 341 of the vehicle-mounted device 300.

[0065] The "saleable energy amount" field stores information about the amount of energy that the seller candidate 61 can sell. For example, the information about the "saleable energy amount" may be information that the seller candidate 61 checks the "remaining battery level" and inputs the amount of energy that can be supplied via the seller terminal 60, and that is transmitted from the seller terminal 60.

[0066] The "Desired Energy Unit Price" field stores information about the energy unit price that the seller candidate 61 wishes to purchase. For example, the information about the "Desired Energy Unit Price" may be information that the seller candidate 61 inputs the desired energy unit price via the seller terminal 60 and that is transmitted from the seller terminal 60.

[0067] The buying and selling status DB 123 stores the buying and selling status of energy determined by the buying and selling support device 100 based on information transmitted from the prospective buyers 51 and the potential sellers 61.

[0068] (Sequence diagram of processing of trading support system 10) Next, the processing in the trading support system 10 and the details of each function of the control unit 110 of the trading support device 100 will be described with reference to the sequence diagram shown in FIG.

[0069] In step S901, the purchaser terminal 50 acquires the remaining battery charge of the vehicle 30 of the prospective purchaser 51. For example, in the example shown in Fig. 4, the purchaser terminal 50 may acquire the remaining battery charge of the high-voltage battery 31 via the charging connector 210 and the cable control unit 240. Alternatively, the purchaser terminal 50 may acquire the remaining battery charge via the battery status signal IF 336 of the in-vehicle device 300 shown in Fig. 5.

[0070] In step S902, the purchase information acquisition unit 111 acquires purchase information including energy purchase conditions from a purchaser 51 who wishes to purchase energy via the purchaser terminal 50 operated by the purchaser 51. The purchase conditions correspond to, for example, information regarding the "amount of energy desired to purchase" and / or the "unit price of energy desired to purchase" included in the purchase information. The purchase information acquisition unit 111 also stores the acquired purchase information in the purchase information DB 121.

[0071] In step S903, the purchase information transmission unit 112 transmits purchase information to the seller candidate 61 who is able to sell energy, to the seller terminal 60 operated by the seller candidate 61. Note that the transmission of purchase information in step S903 corresponds to the transmission of sales request information. The purchase information transmission unit 112 may transmit purchase information to multiple seller candidates 61. The seller candidate 61 may be, for example, a user who has been registered in advance in the buying and selling support system 10 according to this embodiment.

[0072] In step S904, the seller terminal 60 acquires the remaining battery power of the vehicle 30 of the seller candidate 61. For example, the seller terminal 60 acquires the remaining battery power via the battery status signal IF 336 of the vehicle-mounted device 300 shown in FIG.

[0073] In step S905, the seller candidate 61 checks the purchase information sent from the buying and selling support device 100, and if, for example, there is sufficient sellable energy stored in the vehicle 30, the seller candidate 61 sends sales information including the selling conditions for the energy to the buying and selling support device 100. The selling conditions correspond to, for example, information on the "amount of sellable energy" and / or the "desired selling unit price of energy."

[0074] In step S905, the sales information acquisition unit 113 acquires sales information including the sales conditions of the energy from the seller candidate 61 via the seller terminal 60. The sales information acquisition unit 113 also stores the acquired sales information in the sales information DB 122. The sales information acquisition unit 113 may also acquire sales information transmitted from multiple seller candidates 61.

[0075] In step S906, the sales information transmitting unit 114 transmits the sales information transmitted from the sales candidate 61 to the purchaser terminal 50 of the prospective purchaser 51. In addition, when the sales information transmitting unit 114 acquires sales information transmitted from multiple sales candidate 61, it may transmit multiple pieces of sales information to the purchaser terminal 50.

[0076] In step S907, the potential buyer 51 acquires the sales information sent from the buying and selling support device 100 via the buyer terminal 50 and checks the sales information. The potential buyer 51 also considers purchasing energy based on the sent sales information. For example, when there are multiple pieces of sales information, the potential buyer 51 considers purchasing energy based on the sales information that best suits his or her conditions.

[0077] In step S908, the prospective purchaser 51 sends the result of his / her purchase consideration regarding the energy purchase to the buying and selling support device 100. This result of his / her purchase consideration may be information related to the selected sales information. In addition, the result of his / her purchase consideration may be information in which the values ​​of "amount of energy desired to be purchased" and / or "unit price of energy desired to be purchased" are customized for the sales information.

[0078] 8A and 8B, since the "sellable energy amount" shown in the sales information is 30 kWh, the intending purchaser 51 may add information that increases the "desired energy amount to purchase" to 30 kWh in the purchase consideration result and transmit it to the buying and selling support device 100. Also, since the "desired energy unit price to sell" shown in the sales information is 15 kWh or more in the example shown in FIGS. 8A and 8B, the intending purchaser 51 may add information that decreases the "desired energy unit price to purchase" to 15 kWh in the purchase consideration result and transmit it to the buying and selling support device 100.

[0079] In step S908, the purchase consideration result acquisition unit 115 acquires the purchase consideration results transmitted from the intended purchaser 51 via the purchaser terminal 50. The purchase consideration result acquisition unit 115 also stores the acquired purchase consideration results in the buying and selling status DB 123.

[0080] In step S909, the purchase consideration result transmission unit 116 transmits the purchase consideration result to the seller terminal 60 of the seller candidate 61. In step S910, the seller candidate 61 checks the purchase consideration result acquired via the seller terminal 60 and considers whether to sell the energy. Thereafter, in step S911, the seller candidate 61 transmits the considered sales consideration result to the buying and selling support device 100.

[0081] In step S911, the sales consideration result acquisition unit 117 acquires the sales consideration result transmitted from the sales candidate 61 via the seller terminal 60. In addition, the sales consideration result acquisition unit 117 stores the acquired sales consideration result in the sales situation DB 123.

[0082] In step S912, the trade completion determination unit 118 determines whether or not the energy trade is successful based on the purchase consideration result and the sale consideration result. The trade completion determination unit 118 also stores the determination result of whether or not the trade is successful in the trade status DB 123.

[0083] For example, the trade establishment determination unit 118 determines that the trade has been established when the sales determination result of the seller candidate 61 in response to the purchase consideration result is that the energy will be sold.

[0084] For example, the trade success determination unit 118 may determine that the trade of energy is successful when the unit price of energy desired to be purchased included in the purchase information is higher than the unit price of energy desired to be sold included in the sales information.

[0085] Furthermore, the trade completion determination unit 118 may determine that the trade of energy is successful when the amount of energy desired to be purchased included in the purchase information is less than the remaining battery power of the vehicle 30 of the potential seller 61 included in the sales information.

[0086] In addition, the sale completion determination unit 118 may determine that the sale of energy is completed when the amount of energy desired to be purchased is less than the value obtained by subtracting the amount of energy consumed to travel to the current location of the potential buyer 51 from the remaining battery charge of the vehicle 30 of the potential seller 61.

[0087] In steps S913 and S914, the notification unit 119 notifies the result of the determination made by the trade success determination unit 118 to the purchaser terminal 50 of the prospective purchaser 51 and the seller terminal 60 of the potential seller 61.

[0088] Specifically, in step S913, if the sale is concluded, the notification unit 119 notifies the buyer terminal 50 of the potential buyer 51 of information indicating that the sale has been concluded and information regarding the determined potential seller 61. In response to this notification, the potential buyer 51 charges the potential seller 61 with energy using the V2V cable 200 after the potential seller 61 arrives at the current location of the potential buyer 51.

[0089] Furthermore, in step S913, if the trade is not concluded, the notification unit 119 notifies the buyer terminal 50 of the potential buyer 51 of information indicating that the trade has not been concluded. In response to this notification, the potential buyer 51 again transmits purchase information with changed purchase conditions to the trading support device 100, and continues to consider trading energy via the trading support device 100 (LOOP processing in FIG. 9).

[0090] In step S914, if the sale is concluded, the notification unit 119 notifies the seller terminal 60 of the potential seller 61 of information indicating that the sale has been concluded. In response to this notification, the potential seller 61 moves the vehicle 30 to the current location of the potential buyer 51.

[0091] In step S914, if the sale is not concluded, the notification unit 119 notifies the seller terminal 60 of the seller candidate 61 of information indicating that the sale is not concluded. In response to this notification, for example, if the sales request information is notified again, the seller candidate 61 repeatedly performs the LOOP process shown in FIG.

[0092] (Outline of processing flow of buying and selling support device 100) Next, the flow of processing in the trading support device 100 will be shown using the flowchart shown in Figure 10. The series of operations of the trading support device 100 shown in the flowchart of Figure 10 begins when the trading support device 100 is started, and ends when the operation is completed. The processing in the flowchart shown in Figure 10 also ends when the power is turned off or an interrupt occurs to end the processing. In addition, in the following explanation of the flowchart, the same content as that described in the above explanation of the trading support system 10 and the trading support device 100 will be omitted or simplified.

[0093] In step S1001, the purchase information acquisition unit 111 acquires purchase information including energy purchase conditions from a purchaser 51 who wishes to purchase energy via a purchaser terminal 50 operated by the purchaser 51. The purchase conditions correspond to, for example, information regarding the "amount of energy desired to purchase" and / or the "unit price of energy desired to purchase" included in the purchase information. The purchase information acquisition unit 111 also stores the acquired purchase information in the purchase information DB 121. Thereafter, the process proceeds to step S1002.

[0094] In step S1002, the purchase information transmission unit 112 transmits purchase information to a seller candidate 61 who is able to sell energy, to the seller terminal 60 operated by the seller candidate 61. The purchase information transmission unit 112 may transmit purchase information to a plurality of seller candidates 61. The seller candidate 61 may be, for example, a user who has been registered in advance in the buying and selling support system 10 according to this embodiment.

[0095] In step S1002, the sales information acquisition unit 113 acquires sales information including the sales conditions of the energy from the seller candidate 61 via the seller terminal 60. The sales information acquisition unit 113 stores the acquired sales information in the sales information DB 122. The sales information acquisition unit 113 may also acquire sales information transmitted from multiple seller candidates 61. Then, the process proceeds to step S1003.

[0096] In step S1003, the sales information transmitting unit 114 transmits the sales information transmitted from the seller candidate 61 to the purchaser terminal 50 of the prospective purchaser 51. In addition, when the sales information transmitting unit 114 acquires sales information transmitted from multiple seller candidates 61, it may transmit multiple pieces of sales information to the purchaser terminal 50.

[0097] In step S1003, the purchase consideration result acquisition unit 115 acquires the purchase consideration results transmitted from the intended purchaser 51 via the purchaser terminal 50. The purchase consideration result acquisition unit 115 stores the acquired purchase consideration results in the buying and selling status DB 123. Thereafter, the process proceeds to step S1004.

[0098] In step S1004, the purchase consideration result sending unit 116 sends the purchase consideration result to the seller terminal 60 of the seller candidate 61. Also in step S1004, the sales consideration result acquiring unit 117 acquires the sales consideration result sent from the seller candidate 61 via the seller terminal 60. Also, the sales consideration result acquiring unit 117 stores the acquired sales consideration result in the sales status DB 123. Thereafter, the process proceeds to step S1005.

[0099] In step S1005, the trade completion determination unit 118 determines whether or not the energy trade is successful based on the purchase consideration result and the sale consideration result. The trade completion determination unit 118 also stores the determination result of whether or not the trade is successful in the trade status DB 123.

[0100] For example, the trade establishment determination unit 118 determines that the trade has been established when the sales determination result of the seller candidate 61 in response to the purchase consideration result is that the energy will be sold.

[0101] For example, the trade success determination unit 118 may determine that the trade of energy is successful when the unit price of energy desired to be purchased included in the purchase information is higher than the unit price of energy desired to be sold included in the sales information.

[0102] Furthermore, the trade completion determination unit 118 may determine that the trade of energy is successful when the amount of energy desired to be purchased included in the purchase information is less than the remaining battery power of the vehicle 30 of the potential seller 61 included in the sales information.

[0103] In addition, the transaction completion determination unit 118 may determine that the energy transaction is successful if the amount of energy desired to be purchased is less than the value obtained by subtracting the amount of energy consumed when traveling to the current location of the potential buyer 51 from the remaining battery charge of the vehicle 30 of the potential seller 61.

[0104] In step S1005, if the trade completion determination unit 118 determines that the energy trade has been completed (step S1005: YES), the process proceeds to step S1006. On the other hand, in step S1005, if the trade completion determination unit 118 determines that the energy trade has been completed (step S1005: NO), the process proceeds to step S1007.

[0105] In step S1006, the notification unit 119 notifies the result of the determination made by the trade success determination unit 118 to the purchaser terminal 50 of the prospective purchaser 51 and the seller terminal 60 of the potential seller 61.

[0106] In step S1006, the notification unit 119 notifies the purchaser terminal 50 of the potential purchaser 51 of information indicating that the sale has been concluded and information regarding the determined potential seller 61. In response to this notification, the potential purchaser 51 charges the potential seller 61 with energy using the V2V cable 200 after the potential seller 61 arrives at the current location of the potential purchaser 51.

[0107] In step S1006, the notification unit 119 notifies the seller terminal 60 of the potential seller 61 of information indicating that the sale has been concluded. In response to this notification, the potential seller 61 moves the vehicle 30 to the current location of the potential buyer 51.

[0108] Thereafter, after the vehicle 30 of the sales candidate 61 arrives at the current location of the intended purchaser 51, energy is charged using the V2V cable 200. Then, the process ends.

[0109] In step S1007, the notification unit 119 notifies the buyer terminal 50 of the prospective buyer 51 of information indicating that the sale has not been concluded. The notification unit 119 also notifies the seller terminal 60 of the potential seller 61 of information indicating that the sale has not been concluded. Thereafter, the process returns to step S1001, and the process from step S1001 is repeated.

[0110] After step S1007 is completed, if the buyer terminal 50 of the prospective buyer 51 sends a notification to the buying and selling support device 100 that the buyer does not wish to purchase the energy, a process (not shown) may be provided to forcibly terminate the flowchart shown in Fig. 10. In this case, for example, a configuration may be used in which the process of Fig. 10 is resumed when the prospective buyer 51 executes the process from step S1001 again after a predetermined time has elapsed.

[0111] As described above, the buying and selling support device 100 is a buying and selling support device 100 for supporting the buying and selling of energy between vehicles. The buying and selling support device 100 includes a purchasing information acquisition unit 111 that acquires purchasing information, including energy purchasing conditions, via a buyer terminal 50 operated by a prospective buyer 51 who wishes to purchase energy. The buying and selling support device 100 also includes a purchasing information transmission unit 112 that transmits purchasing information to a seller terminal 60 operated by a potential seller 61 who is able to sell energy. The buying and selling support device 100 also includes a sales information acquisition unit 113 that acquires sales information, including energy sales conditions, from the potential seller 61 via the seller terminal 60. The buying and selling support device 100 also includes a sales information transmission unit 114 that transmits the sales information transmitted from the prospective seller 61 to the buyer terminal 50 of the prospective buyer 51. The buying and selling support device 100 also includes a purchase consideration result acquisition unit 115 that acquires purchase consideration results transmitted from the prospective buyer 51 via the buyer terminal 50. The trading support device 100 also includes a purchase consideration result sending unit 116 that sends the purchase consideration result to the seller terminal 60 of the potential seller 61. The trading support device 100 also includes a sales consideration result acquiring unit 117 that acquires the sales consideration result sent from the potential seller 61 via the seller terminal 60. The trading support device 100 also includes a trade completion determination unit 118 that determines whether or not the energy trade will be completed based on the purchase information, sales information, purchase consideration result, and sales consideration result. The trading support device 100 also includes a notification unit 119 that notifies the purchaser terminal 50 of the potential buyer 51 and the seller terminal 60 of the potential seller 61 of the result determined by the trade completion determination unit 118.

[0112] As a result, the buying and selling support device 100 determines whether or not the energy trading is successful based on the purchase information, the selling information, the purchase consideration result, and the sales consideration result. Therefore, the buying and selling support device 100 can support appropriate energy trading for both the electricity seller and the electricity buyer in a system for charging between vehicles.

[0113] Furthermore, the sales information of the buying and selling support device 100 may include location information indicating the current location of the potential seller 61 and an estimated arrival time to the current location of the potential buyer 51. This enables the buying and selling support device 100 to take into account the amount of energy consumed by the potential seller 61 to travel to the current location of the potential buyer 51, thereby enabling more accurate buying and selling support.

[0114] Furthermore, the trade completion determination unit 118 may determine that the energy trade is successful when the unit price of the energy desired to be purchased included in the purchase information is higher than the unit price of the energy desired to be sold included in the sales information. This enables the trade support device 100 to determine whether the trade is successful in line with the wishes of both the prospective buyer 51 and the potential seller 61, thereby enabling more appropriate support for the trade of energy.

[0115] Furthermore, the trade completion determination unit 118 may determine that the energy trade is successful when the amount of energy desired to be purchased, which is included in the purchase information, is less than the remaining battery charge of the vehicle 30 of the potential seller 61, which is included in the sales information. This allows the trade support device 100 to determine whether the trade is successful in line with the wishes of the potential buyer 51, thereby enabling more appropriate support for the trade of energy.

[0116] Furthermore, the trade completion determination unit 118 may determine that the trade is completed when the amount of energy desired to be purchased included in the purchase information is less than the value obtained by subtracting the amount of energy consumed in moving to the current location of the prospective buyer 51 from the remaining battery charge of the vehicle 30 of the prospective seller 61. This allows the trade support device 100 to provide more accurate trade support that is in line with the wishes of the prospective buyer 51 and takes into account the amount of energy consumed by the prospective seller 61 to move to the current location of the prospective buyer 51.

[0117] (Other embodiments) Although the embodiments have been described in detail with reference to the drawings, the present embodiments are not limited to the contents described in the above embodiments. Furthermore, the components described above include those that can be easily imagined by a person skilled in the art and those that are substantially the same. Furthermore, the configurations described above can be combined as appropriate. Furthermore, various omissions, substitutions, or modifications of the configurations can be made without departing from the spirit of the embodiments.

[0118] 9 and 10 is initiated when the prospective buyer 51 transmits purchase information to the trading support device 100 via the buyer terminal 50. However, this configuration does not limit the configuration of the embodiment. For example, the processing of the trading support device 100 may be initiated when the prospective seller 61 transmits information to the trading support device 100 via the seller terminal 60 that there is energy available for sale. This allows the prospective buyer 51 to prevent a situation such as running out of energy by charging the battery if a suitable prospective seller 61 is present, even if the prospective buyer 51 has a surplus of energy based on the sales information transmitted from the trading support device 100.

[0119] Furthermore, a computer program (trading support program) that causes a computer to execute the processing (trading support method) in the trading support device 100 described above, and a computer-readable recording medium on which the program is recorded, are included within the scope of this embodiment. Here, any type of computer-readable recording medium may be used. Furthermore, the computer program is not limited to being recorded on the recording medium described above, and may be transmitted via a telecommunications line, a wireless or wired communication line, a network such as the Internet, or the like.

[0120] The following describes the features of the trading support device 100, the trading support system 10, and the trading support method.

[0121] The buying and selling support device 100 according to the first aspect is a buying and selling support device 100 for supporting the buying and selling of energy between vehicles. The buying and selling support device 100 includes a purchasing information acquisition unit 111 that acquires purchasing information, including energy purchasing conditions, via a buyer terminal 50 operated by a prospective buyer 51 who wishes to purchase energy. The buying and selling support device 100 also includes a purchasing information transmission unit 112 that transmits the purchasing information to a seller terminal 60 operated by a potential seller 61 who is able to sell energy. The buying and selling support device 100 also includes a sales information acquisition unit 113 that acquires sales information, including energy sales conditions, from the potential seller 61 via the seller terminal 60. The buying and selling support device 100 also includes a sales information transmission unit 114 that transmits the sales information transmitted from the prospective seller 61 to the buyer terminal 50 of the prospective buyer 51. The buying and selling support device 100 also includes a purchase consideration result acquisition unit 115 that acquires purchase consideration results transmitted from the prospective buyer 51 via the buyer terminal 50. The trading support device 100 also includes a purchase consideration result sending unit 116 that sends the purchase consideration result to the seller terminal 60 of the potential seller 61. The trading support device 100 also includes a sales consideration result acquiring unit 117 that acquires the sales consideration result sent from the potential seller 61 via the seller terminal 60. The trading support device 100 also includes a trade completion determination unit 118 that determines whether or not the energy trade will be completed based on the purchase information, sales information, purchase consideration result, and sales consideration result. The trading support device 100 also includes a notification unit 119 that notifies the purchaser terminal 50 of the potential buyer 51 and the seller terminal 60 of the potential seller 61 of the result determined by the trade completion determination unit 118.

[0122] According to the above configuration, the buying and selling support device 100 determines whether or not an energy trade is concluded based on the purchase information, the selling information, the purchase consideration result, and the sales consideration result. Therefore, the buying and selling support device 100 can support appropriate energy trading for both the power seller and the power buyer in a system for charging between vehicles.

[0123] The sales information of the buying and selling support apparatus 100 according to the second embodiment may include location information indicating the current location of the potential seller 61 and an estimated time of arrival of the intended purchaser 51 to the current location.

[0124] According to the above configuration, the buying and selling support device 100 can take into consideration the amount of energy consumed by the potential seller 61 to travel to the current location of the intended purchaser 51, thereby enabling more accurate buying and selling support.

[0125] The trade completion determination unit 118 of the trading support device 100 according to the third aspect may determine that the energy trade is completed when the unit price of the energy desired to be purchased included in the purchase information is higher than the unit price of the energy desired to be sold included in the sales information.

[0126] According to the above configuration, the buying and selling support device 100 can determine whether a buying and selling is concluded in accordance with the wishes of both the prospective buyer 51 and the potential seller 61, thereby enabling more appropriate support for the buying and selling of energy.

[0127] The trade completion determination unit 118 of the trading support device 100 according to the fourth aspect may determine that the trade of energy is completed when the amount of energy desired to be purchased included in the purchase information is less than the remaining battery charge of the vehicle 30 of the potential seller 61 included in the sales information.

[0128] According to the above configuration, the buying and selling support device 100 can determine whether a buying and selling is concluded in accordance with the wishes of the prospective purchaser 51, thereby enabling more appropriate support for the buying and selling of energy.

[0129] The trade completion determination unit 118 according to the fifth aspect may determine that the trade is completed when the amount of energy desired to be purchased included in the purchase information is less than the value obtained by subtracting the amount of energy consumed to travel to the current location of the potential buyer from the remaining battery charge of the potential seller's vehicle.

[0130] According to the above configuration, the sales support device 100 is in line with the wishes of the prospective buyer 51, and by taking into account the amount of energy consumed by the potential seller 61 to travel to the current location of the prospective buyer 51, more accurate sales support is possible.

[0131] The trading support system 10 according to the sixth aspect includes the above-described trading support device 100, a purchaser terminal 50 operated by a prospective buyer 51, and a seller terminal 60 operated by a prospective seller 61. The trading support system 10 also includes a V2V cable 200 that connects the vehicle 30 of the prospective buyer 51 and the vehicle 30 of the prospective seller 61 and charges energy between them.

[0132] According to the above configuration, the trading support system 10 determines whether or not an energy trade is concluded based on the purchase information, the sales information, the purchase consideration result, and the sales consideration result. Therefore, the trading support system 10 can support appropriate energy trading for both the electricity seller and the electricity buyer in a system for charging between vehicles.

[0133] A buying and selling support method according to a seventh aspect is a buying and selling support method executed by a computer for supporting the buying and selling of energy between vehicles. The buying and selling support method acquires purchasing information including energy purchasing conditions via a buyer terminal 50 operated by a prospective buyer 51 who wishes to purchase energy. The buying and selling support method also transmits the purchasing information to a seller terminal 60 operated by a prospective seller 61 who is able to sell the energy. The buying and selling support method also acquires sales information including energy sales conditions from the prospective seller 61 via the seller terminal 60. The buying and selling support method also transmits the sales information transmitted from the prospective seller 61 to the buyer terminal 50 of the prospective buyer 51. The buying and selling support method also acquires a purchase consideration result transmitted from the prospective buyer 51 via the buyer terminal 50. The buying and selling support method also transmits the purchase consideration result to the seller terminal 60 of the prospective seller 61. The buying and selling support method also acquires a sales consideration result transmitted from the prospective seller 61 via the seller terminal 60. The buying and selling support method also determines whether or not the energy buying and selling will be concluded based on the purchase information, the selling information, the purchase consideration result, and the sales consideration result. Furthermore, the buying and selling support method notifies the result of the determination to the buyer terminal 50 of the prospective buyer 51 and the seller terminal 60 of the potential seller 61.

[0134] According to the above configuration, the trading support method determines whether or not an energy trade is concluded based on purchase information, sales information, a purchase consideration result, and a sales consideration result. Therefore, the trading support method can support appropriate energy trading for both the electricity seller and the electricity buyer in a system for charging between vehicles. [Explanation of symbols]

[0135] 10. Trading Support System 30 vehicles 31 High-voltage battery 40 Network 50 buyer terminals 51 potential buyers 60 merchant terminals 61 Sales Candidates 100 Trading support device 110 control section 111 Purchase Information Acquisition Department 112 Purchase Information Transmission Department 113 Sales Information Acquisition Department 114 Sales Information Transmission Department 115 Purchase Consideration Result Acquisition Department 116 Purchase Consideration Result Transmission Department 117 Sales Review Result Acquisition Department 118 Transaction Completion Determination Department 119 Notification Department 120 Storage section 121 Purchase Information DB 122 Sales Information DB 123 Trading Status DB 130 Input / Output Interface 140 Communication Interface 200 V2V cable 210 Charging connector 220 Power supply connector 230 Booster 240 Cable control section 250, 251 Cable 300 Onboard equipment 310 CPU

Claims

1. A trading support device for supporting the trading of energy between vehicles, a purchase information acquisition unit that acquires purchase information including purchase conditions for the energy via a purchaser terminal operated by a purchaser who wishes to purchase the energy; a purchase information transmitting unit that transmits the purchase information to a seller terminal operated by a seller candidate who is able to sell the energy; a sales information acquisition unit that acquires sales information including sales conditions of the energy from the seller candidate via the seller terminal; a sales information transmitting unit that transmits the sales information transmitted from the seller candidate to the purchaser terminal of the intended purchaser; a purchase consideration result acquisition unit that acquires the purchase consideration results sent from the intended purchaser via the purchaser terminal; a purchase consideration result transmission unit that transmits the purchase consideration result to the seller terminal of the seller candidate; a sales consideration result acquisition unit that acquires the sales consideration result transmitted from the sales candidate via the seller terminal; a trade success determination unit that determines whether or not the trade of the energy is successful based on the purchase information, the sales information, the purchase consideration result, and the sales consideration result; a notification unit that notifies the purchaser terminal of the prospective purchaser and the seller terminal of the potential seller of the result of the determination made by the trade success determination unit; A trading support device comprising:

2. 2. The buying and selling support device according to claim 1, wherein the sales information includes location information indicating a current location of the potential seller and an estimated arrival time of the potential buyer to the current location.

3. The buying and selling support device according to claim 1, wherein the trade success determination unit determines that the energy trade is successful when the unit price of the energy desired to be purchased included in the purchase information is higher than the unit price of the energy desired to be sold included in the sales information.

4. The buying and selling support device according to claim 1, wherein the trade completion determination unit determines that the trade of the energy is completed when the amount of energy desired to be purchased included in the purchase information is less than the remaining battery charge of the vehicle of the potential seller included in the sales information.

5. 5. The buying and selling support device according to claim 4, wherein the trade completion determination unit determines that the trade of the energy is successful when the amount of energy desired to be purchased included in the purchase information is less than a value obtained by subtracting the amount of energy consumed when traveling to the current location of the potential buyer from the remaining battery charge of the vehicle of the potential seller included in the sales information.

6. A buying and selling support device according to any one of claims 1 to 5, the purchaser terminal operated by the intended purchaser; the seller terminal operated by the seller candidate; a V2V cable for connecting the vehicle of the prospective buyer and the vehicle of the potential seller and charging the energy; Buying and selling support system.

7. A trading support method executed by a computer for supporting trading of energy between vehicles, comprising: acquiring purchase information including purchase conditions for the energy via a purchaser terminal operated by a purchaser who wishes to purchase the energy; Transmitting the purchase information to a seller terminal operated by a seller candidate who is able to sell the energy; acquire sales information including sales conditions of the energy from the seller candidate via the seller terminal; Sending the sales information transmitted from the seller candidate to the purchaser terminal of the prospective purchaser; Acquire the purchase consideration results sent from the prospective purchaser via the purchaser terminal; Sending the purchase review result to the seller terminal of the seller candidate; Acquire the sales review results sent from the seller candidate via the seller terminal; determining whether or not the energy transaction is successful based on the purchase information, the sales information, the purchase consideration result, and the sales consideration result; The result of the determination is notified to the purchaser terminal of the prospective purchaser and the seller terminal of the potential seller.

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