Power information management system and power information management method

Abstract

In the present invention, the reliability of information is verified regarding the power amount of green power subject to transaction in a power transaction through an on-board battery.　This power information management system comprises: a charging device that charges an on-board battery of a vehicle; and a management device that manages the origin of charging power by which the on-board battery was charged. The management device comprises: a charging information acquisition unit that acquires, from the charging device via the vehicle, charging information including information on a green charge amount originating from green power by which the charging device charged the vehicle, and information on a system charge amount originating from system power; a system information acquisition unit that acquires system power information including information on a system power supply amount supplied to a building where the charging device is installed; and a verification unit that verifies the reliability of the green charging amount on the basis of the system charging amount and the system power supply amount.

Description

Technical Field

[0006] , ,

[0005] , , ,

[0001] The present invention relates to a power information management system and a power information management method.

Background Art

[0002] In recent years, in order to enable more people to access affordable, reliable, sustainable, and advanced energy, research and development have been carried out on the trading of renewable energy that contributes to energy efficiency.

[0003] Patent Document 1 describes a power management system including an external connection management device that stores the amount of charge from a home solar power generation device to an electric vehicle, the amount of charge from the grid power network at home to the electric vehicle, and the amount of discharge from the electric vehicle at home to the grid power network.

Prior Art Documents

[0007] One aspect of the present invention is a power information management system comprising: a charging device that charges an on-board battery mounted on a vehicle by receiving green power, which is renewable energy, and grid power from the power grid; and a management device that manages the origin of the charging power charged to the on-board battery of the vehicle, wherein the management device includes a charging information acquisition unit that acquires charging information for the vehicle from the charging device via any of the vehicles, including information on the amount of green charging, which is the charging power derived from the green power included in the charging power charged to the vehicle by the charging device, and information on the amount of grid charging, which is the charging power derived from the grid power; a grid information acquisition unit that acquires grid power information, which includes information on the amount of grid power supplied from the power grid to the building where the charging device is installed; and a verification unit that verifies the credibility of the amount of green charging included in the charging information for the vehicle based on the amount of grid charging included in the charging information for the vehicle and the amount of grid power included in the grid power information. According to another aspect of the present invention, the charging device stores the charging information for a vehicle that the charging device has charged, the charging information acquisition unit acquires the stored charging information for the vehicle via another vehicle different from the vehicle, and the verification unit verifies the credibility of the green charging amount included in the charging information for the vehicle based on the grid charging amount included in the charging information for the vehicle and the grid power supply amount included in the grid power information. According to another aspect of the present invention, the charging information includes the date and time when the corresponding vehicle was charged, the grid power information includes the date and time when power was supplied to the building in accordance with the grid power supply amount, and the verification unit verifies the authenticity of the green charging amount at the charging date and time included in the charging information, based on the grid charging amount at the charging date and time and the grid power supply amount at the power supply date and time that coincides with the charging date and time. Another aspect of the present invention is a power information management method performed by a computer of a power information management system having a charging device that charges an on-board battery mounted on a vehicle by receiving green power, which is renewable energy, and grid power from the power grid, and a management device that manages the origin of the charging power charged in the on-board battery of the vehicle, the power information management method comprising: a charging information acquisition step of acquiring charging information for the vehicle from the charging device via one of the vehicles, including information on the amount of green charging, which is the charging power derived from the green power, and information on the amount of grid charging, which is the charging power derived from the grid power, for the vehicle; a grid information acquisition step of acquiring grid power information, which includes information on the amount of grid power supplied, which is the power supplied from the power grid to the building where the charging device is installed; and a verification step of verifying the credibility of the amount of green charging included in the charging information for the vehicle, based on the amount of grid charging included in the charging information for the vehicle and the amount of grid power included in the grid power information. This specification shall include all the contents of Japanese Patent Application No. 2023-044239, filed on March 20, 2023. [Effects of the Invention]

[0008] According to the present invention, the reliability of information regarding the amount of green electricity traded in power trading via an in-vehicle battery can be appropriately verified. [Brief explanation of the drawing]

[0009] [Figure 1]Figure 1 shows the configuration of a power information management system according to one embodiment of the present invention. [Figure 2] Figure 2 shows the configuration of the control device. [Figure 3] Figure 3 shows the configuration of the charging device. [Figure 4] Figure 4 shows the configuration of the vehicle. [Figure 5] Figure 5 is a flowchart illustrating the operation procedure of the power information management system. [Figure 6] Figure 6 shows an example of credibility information. [Modes for carrying out the invention]

[0010] Embodiments of the present invention will be described below with reference to the drawings.

[0011] [1. Embodiments] [1.1 Configuration of the Power Information Management System] Figure 1 shows the configuration of a power information management system 1 according to one embodiment of the present invention. The power information management system 1 includes a charging device 3 installed in a building 2 and a management device 4. Building 2 is, for example, the residence of an individual who owns or is leased the charging device 3. Building 2 may also be a building dedicated to the installation of the charging device 3.

[0012] The charging device 3 charges the on-board battery 6a installed in the vehicle 5a by receiving green electricity, which is renewable energy, and grid electricity from the power grid 7. The green electricity is supplied, for example, from solar panels 8 that generate solar power on the building 2. The power grid 7 includes a power plant 71 and a grid power network 72. The power plant 71 supplies electricity that includes non-renewable energy, such as electricity generated using fossil fuels such as oil, coal, and natural gas.

[0013] Vehicle 5a includes an in-vehicle communication device 10 and can communicate with a management device 4 via a communication network 11. Although FIG. 1 shows one vehicle 5a, the charging device 3 can sequentially charge a plurality of vehicles 5a. Further, the charging device 3 can also charge the in-vehicle batteries 6b of one or more vehicles 5b that do not include an in-vehicle communication device 10 and cannot communicate with the management device 4. For example, vehicles 5a and 5b are electric vehicles driven by drive motors that operate on the power supplied by in-vehicle batteries 6a and 6b, respectively. Hereinafter, vehicles 5a and 5b are also collectively referred to as vehicle 5, and in-vehicle batteries 6a and 6b are also collectively referred to as in-vehicle battery 6.

[0014] The management device 4 is communicably connected to a power company server 9, which is a server device of a power company operating a power system 7, via a communication network 11. The management device 4 manages the origin of the charging power, which is the power charged in the in-vehicle battery 6 of the vehicle 5. Here, the origin of the charging power specifically refers to the breakdown of the green power and the grid power included in the charging power. Hereinafter, the charging from the charging device 3 to the in-vehicle battery 6 of the vehicle 5 is also referred to as the charging from the charging device 3 to the vehicle 5.

[0015] In particular, in this embodiment, the management device 4 obtains charging information indicating the origin of the charging power with which the charging device 3 has charged the vehicle 5 from the charging device 3 via the vehicle 5a equipped with the in-vehicle communication device 10. Then, the management device 4 verifies the reliability of the charging information based on the grid power information, which is the information on the grid power supplied by the power company to the building 2, obtained from the power company server 9.

[0016] [1.2 Configuration of Management Device] FIG. 2 is a diagram showing the configuration of the management device 4. The management device 4 includes a first processor 20, a first memory 21, and a first communication device 22. The first communication device 22 is a transceiver for communicating with the power company server 9, the vehicle 5, and other devices via the communication network 11. The first memory 21 is constituted by, for example, a volatile and / or non-volatile semiconductor memory, and / or a hard disk device, etc.

[0017] The first processor 20 is a computer including, for example, a CPU, etc. The first processor 20 may have a configuration including a ROM in which a program is written, a RAM for temporarily storing data, etc. And the first processor 20 includes a charging information acquisition unit 24, a system information acquisition unit 25, and a verification unit 26 as functional elements or functional units.

[0018] These functional elements included in the first processor 20 are realized, for example, when the first processor 20, which is a computer, executes a program stored in the first memory 21. Note that the program can be stored in any computer-readable storage medium. Instead of this, all or part of the above functional elements included in the first processor 20 can also be constituted by hardware including one or more electronic circuit components.

[0019] The charging information acquisition unit 24 acquires, via any one of the vehicles 5, the charging information about the vehicle 5 including the information on the green charging amount, which is the charging power derived from the green power included in the charging power with which the charging device 3 charges the vehicle 5, and the information on the grid charging amount, which is the charging power derived from the grid power, from the charging device 3.

[0020] As will be described later, the charging information is generated by the charging device 3 every time a charging operation for the vehicle 5 is performed. The charging information may include, in addition to the total charging amount in the charging operation, the information on the green charging amount and the grid charging amount, which are the breakdown of the total charging amount, the vehicle identification number of the vehicle 5 charged in the charging operation, and the charging date and time including the date and time zone when the charging operation was performed. The vehicle identification number may be, for example, the vehicle number displayed on the license plate of the vehicle 5.

[0021] Specifically, the charging information acquisition unit 24 acquires charging information for a vehicle 5a that has a communication function from the charging device 3 via the vehicle 5a when the charging operation to the vehicle 5a is completed. Furthermore, regarding charging information for vehicle 5b, which is different from vehicle 5a and does not have a communication function, the charging information acquisition unit 24 acquires the charging information for vehicle 5b stored by the charging device 3, for example, when vehicle 5a is charged by the charging device 3, via vehicle 5a. In other words, the charging information acquisition unit 24 can acquire charging information for one vehicle 5 that has been charged by the charging device 3, via another vehicle 5 that is different from the one mentioned above. As a result, the power information management system 1 can acquire charging information for vehicle 5b, which does not have a communication function, from the charging device 3 via vehicle 5a, which does have a communication function, and appropriately verify the reliability of the green charging amount included in that charging information.

[0022] The system information acquisition unit 25 acquires system power information, which includes information on the amount of system power supplied from the power system 7 to the building 2 where the charging device 3 is installed. For example, the system information acquisition unit 25 acquires the system power information from the power company server 9 of the power company that operates the power system 7. The system power information may be, for example, information used by the power company to calculate electricity charges for the building 2. The system power information may include the date and time of power supply to the building 2 in correspondence with the amount of system power supplied. For example, the date and time of power supply may be a time period of a predetermined length at predetermined intervals (for example, a one-hour time period at one-hour intervals), and the system power information may be information indicating the amount of system power supplied for each of the above time periods.

[0023] The verification unit 26 verifies the reliability of the green charge amount included in the charging information for the vehicle 5, based on the grid charge amount included in the charging information and the grid power supply amount included in the grid power information. For example, the verification unit 26 compares the grid charge amount included in the charging information with the grid power supply amount included in the grid power information, and if the two match within a predetermined tolerance range, it determines that the grid charge amount is an appropriate value. Then, as a result of the above determination, if the grid charge amount included in the charging information is an appropriate value, the verification unit 26 determines that the green charge amount, which is a charging power element other than the grid charge amount included in the charging information, is reliable, for example, that its reliability is "high," and if not, it determines that its reliability is "low."

[0024] This allows the power information management system 1 to appropriately verify the reliability of the green charging amount value included in the charging information for the vehicle 5 obtained from the charging device 3.

[0025] Furthermore, in verifying the authenticity described above, the verification unit 26 may extract the amount of grid power supplied from the grid power information for a power supply date and time that matches the charging date and time included in the charging information (more specifically, the time period of the power supply date and time that matches the time period of the charging date and time; the same applies hereinafter). The verification unit 26 can verify the authenticity of the green charging amount at the charging date and time included in the charging information based on the grid charging amount at the charging date and time included in the charging information and the extracted grid power supply amount. This makes it possible to verify the authenticity of the green charging amount included in the charging information more appropriately.

[0026] Furthermore, the above-mentioned tolerance used to determine the appropriateness of the grid charging amount may be set by considering the amount of electricity consumed by electrical equipment other than the charging device 3 in the building 2 (e.g., air conditioning equipment, etc.) that is consumed from the same grid power line connected to the charging device 3 (e.g., the average amount of electricity consumed per hour). In addition, the above-mentioned amount of electricity consumption may be set to different values ​​depending on the time of day, season, weather, etc.

[0027] The verification unit 26 associates the charging information with the verification results regarding the authenticity of the amount of green electricity contained in the charging information and stores it in the first memory 21 as authenticity information 23. This authenticity information 23 can be provided to other server devices (not shown) that manage electricity trading via the vehicle 5, for example, upon request from such other server devices, and may contribute to ensuring the fairness of electricity trading within the carbon credit framework.

[0028] Figure 6 shows an example of credibility information 23 stored in the first memory 21. In the example shown, the charging information for each of the vehicles 5 identified by the vehicle identification number shown in the leftmost column, Vehicle ID, is shown in the second and third columns. The result of the credibility verification of the green energy amount in the charging information for each row is indicated as "High" or "Low".

[0029] [1.3 Charging device configuration] Figure 3 shows the configuration of the charging device 3. The charging device 3 includes a charging circuit 30 that receives power from the grid 72 and the solar panel 8 to charge the vehicle 5 connected to the output connector 31. The charging circuit 30 includes a first charging circuit 32, a second charging circuit 33, a first charge amount measurement circuit 34, and a second charge amount measurement circuit 35. The first charging circuit 32 converts the voltage of the grid power supplied from the grid 72 to generate a charging output suitable for charging the vehicle 5. The second charging circuit 33 converts the voltage of the green power supplied from the solar panel 8 to generate a charging output suitable for charging the vehicle 5.

[0030] The first charge amount measurement circuit 34 measures the grid charge amount, which is the charging power derived from grid power output from the first charge circuit 32 and used to charge the vehicle 5. The second charge amount measurement circuit 35 measures the green charge amount, which is the charging power derived from green power output from the second charge circuit 33 and used to charge the vehicle 5.

[0031] The charging device 3 also includes a second processor 40, a second memory 41, a second communication device 42, and a camera 43. The second communication device 42 is a communication device for the charging device 3 to communicate with the vehicle 5, and is a transceiver that performs short-range communication such as Bluetooth® communication. The camera 43 takes pictures of the vehicle 5 being charged by the charging device 3. The second memory 41 is composed of, for example, a volatile and / or non-volatile semiconductor memory and / or a hard disk drive. The second memory 41 stores charging information for vehicles 5b that do not have an in-vehicle communication device 10 as a charging history 44.

[0032] The second processor 40 is, for example, a computer equipped with a CPU. The second processor 40 may also have a configuration that includes a ROM on which a program is written, RAM for temporary data storage, etc. The second processor 40 includes, as a functional element or functional unit, a power acquisition unit 45 and an information generation unit 46.

[0033] These functional elements of the second processor 40 are realized, for example, by the second processor 40, which is a computer, executing a program stored in the second memory 41. The program can be stored in any storage medium that is readable by the computer. Alternatively, all or part of the above functional elements of the second processor 40 can be configured by hardware, each including one or more electronic circuit components.

[0034] When the vehicle 5 is connected to the output connector 31, the power acquisition unit 45 starts measuring the grid charge amount using the first charge amount measurement circuit 34 and the green charge amount using the second charge amount measurement circuit 35. Then, when the charging operation to the vehicle 5 is completed or the connection with the vehicle 5 at the output connector 31 is disconnected, the power acquisition unit 45 acquires the grid charge amount measured by the first charge amount measurement circuit 34 and the green charge amount measured by the second charge amount measurement circuit 35.

[0035] When the vehicle 5 is connected to the output connector 31, the information generation unit 46 uses the camera 43 to photograph the license plate of the vehicle 5 and obtains the vehicle number displayed on the license plate. The information generation unit 46 then generates charging information for the current charging operation of the vehicle 5, including the obtained vehicle number as the vehicle identification number of the vehicle 5, and also including the grid charge amount and green charge amount obtained by the power amount acquisition unit 45.

[0036] If the information generation unit 46 does not receive an information request from the vehicle 5 via the second communication device 42 at the end of the charging operation to the vehicle 5, it stores the generated charging information as a charging history 44 in the second memory 41. The end of the charging operation may be, for example, when the charging cable connecting the output connector 31 and the vehicle 5 is disconnected.

[0037] On the other hand, when an information request is received from vehicle 5 via the second communication device 42 at the end of the charging operation for vehicle 5, the charging information for that vehicle 5 generated above, and the charging information for other vehicles 5 stored as charging history 44 in the second memory 41 are sent to the vehicle 5 that sent the information request. The information generation unit 46 deletes the transmitted charging information from the charging history 44.

[0038] [1.4 Vehicle 5a configuration] Figure 4 shows the configuration of vehicle 5a. The vehicle 5a includes an on-board battery 6a, an on-board communication device 10, a power supply circuit 50, a remaining charge sensor 51, a vehicle control device 52, and a drive motor 53. The on-board communication device 10 includes a transceiver that performs short-range communication such as Bluetooth communication, and a transceiver that performs communication via a communication network 11. The remaining charge sensor 51 detects the remaining charge of the on-board battery 6a.

[0039] The on-board battery 6a is charged by receiving power from outside the vehicle 5a via the charging connector 55. The on-board battery 6a also supplies power to the drive motor 53 via the vehicle control device 52, which controls the operation of the drive motor 53, and also supplies external power to devices outside the vehicle 5a via the power supply circuit 50 and power supply connector 54. Power trading can be conducted through the vehicle 5a through the above charging and external power supply. The power supply circuit 50 is similarly provided in the vehicle 5b, and power trading can be conducted through the vehicle 5b.

[0040] Vehicle 5a is also equipped with an information providing device 60. When vehicle 5a is connected to the charging device and receives charge from the charging device 3, the information providing device 60 acquires charging information from the charging device 3 and transmits it to the management device 4.

[0041] Specifically, the information providing device 60 comprises a third processor 61 and a third memory 62. The third memory 62 is composed of, for example, a volatile and / or non-volatile semiconductor memory and / or a hard disk drive.

[0042] The third processor 61 is, for example, a computer equipped with a CPU. The second processor 40 may have a configuration that includes a ROM on which a program is written, RAM for temporary data storage, etc. The third processor 61 includes a power information acquisition unit 63 and an information provision unit 64 as functional elements or functional units.

[0043] These functional elements of the third processor 61 are realized, for example, by the third processor 61, which is a computer, executing a program stored in the third memory 62. The program can be stored in any storage medium that is readable by the computer. Alternatively, all or part of the above functional elements of the third processor 61 can be configured by hardware, each including one or more electronic circuit components.

[0044] When the charging operation from the charging device 3 is completed (for example, when the charging cable between the output connector 31 and the charging connector 55 of the charging device 3 is disconnected), the power information acquisition unit 63 sends an information request to the charging device 3 via the in-vehicle communication device 10. The power information acquisition unit 63 receives the charging information transmitted by the charging device 3 in response to the above information request.

[0045] The information provision unit 64 transmits the charging information received by the power information acquisition unit 63 from the charging device 3 to the management device 4.

[0046] [1.5 Operation of the Power Information Management System] Next, we will explain the operation of the power information management system 1. Figure 5 is a flowchart showing the procedure for power information management performed by the computer of the power information management system 1. Here, the computer of the power information management system 1 may include the first processor 20 of the management device 4, the second processor 40 of the charging device 3, and the third processor 61 of the vehicle 5a information providing device 60. The process shown in Figure 5 is executed repeatedly. In Figure 5, steps S100 to S112 are mainly processes in the charging device 3, and steps S114 to S120 are mainly processes in the management device 4.

[0047] When processing begins, the power acquisition unit 45 of the charging device 3 first determines whether or not charging of the vehicle 5 has started (S100). If charging has not started (S100, NO), the power acquisition unit 45 returns to step S100 and repeats the process, waiting for charging to start.

[0048] On the other hand, when charging of vehicle 5 begins (S100, YES), the energy acquisition unit 45 starts measuring the grid charge amount and green charge amount to vehicle 5 (S102). Next, the energy acquisition unit 45 determines whether or not charging of vehicle 5 has finished (S104). If charging has not finished (S104, NO), the energy acquisition unit 45 returns to step S104 and repeats the process, continuing to measure the grid charge amount and green charge amount until charging is finished.

[0049] On the other hand, when charging is complete (S104, YES), the information generation unit 46 of the charging device 3 generates charging information for the vehicle 5 for the current charging operation (S106). The information generation unit 46 also determines whether or not the vehicle 5 is a vehicle capable of communication (S108). For example, when the information generation unit 46 receives an information request from the vehicle 5, it may determine that the vehicle 5 is a vehicle capable of communication.

[0050] If vehicle 5 is not a vehicle capable of communication (S108, NO), the information generation unit 46 stores the generated charging information as charging history 44 in the second memory 41 (S110) and terminates this process. On the other hand, if vehicle 5 is a vehicle capable of communication (S108, YES), the information generation unit 46 transmits the generated charging information and the charging information stored as charging history 44 in the second memory 41 to vehicle 5 (S112).

[0051] Next, the charging information acquisition unit 24 of the management device 4 acquires charging information via the vehicle 5 (S114). Subsequently, the grid information acquisition unit 25 acquires grid power information for the building 2 where the charging device 3 is installed from the power company server 9 (S116). Then, the verification unit 26 verifies the authenticity of the green charging amount included in each piece of charging information based on the grid charging amount included in the charging information and the grid power supply amount included in the grid power information (S118). The verification unit 26 saves the authenticity information 23 showing the results of the above verification in the first memory 21 (S120) and terminates this process.

[0052] In Figure 5, step S114 corresponds to the charging information acquisition step in this disclosure. Step S116 corresponds to the system information acquisition step in this disclosure. Step S118 corresponds to the verification step in this disclosure.

[0053] [2. Other Embodiments] The verification unit 26 of the control device 4 may determine the appropriateness of the grid charging amount by taking into account the degree of power loss (loss coefficient) in the first charging circuit 32 of the charging device 3. For example, the verification unit 26 may determine whether the difference between the value obtained by multiplying the grid power supply amount by the loss coefficient and the grid charging amount is within the range of an acceptable error.

[0054] Furthermore, in the embodiment described above, the verification unit 26 of the management device 4 judges the reliability of the green charging amount using a binary value of "high" or "low" reliability. However, it may also judge using a multi-value system, such as a five-level evaluation. For example, the verification unit 26 may use multiple error ranges defined to correspond to each of the five levels described above as the tolerance error used to judge the appropriateness of the grid charging amount.

[0055] It should be noted that the present invention is not limited to the configuration of the embodiments described above, and can be implemented in various forms without departing from the spirit of the invention.

[0056] [3. Configurations supported by the above embodiments] The embodiments described above support the following configurations.

[0057] (Configuration 1) A power information management system comprising: a charging device that charges an on-board battery mounted on a vehicle by receiving green power, which is renewable energy, and grid power from the power grid; and a management device that manages the origin of the charging power charged to the on-board battery of the vehicle, wherein the management device includes a charging information acquisition unit that acquires charging information for the vehicle from the charging device via any of the vehicles, including information on the amount of green charging, which is the amount of charging power derived from the green power, and information on the amount of grid charging, which is the amount of charging power derived from the grid power; a grid information acquisition unit that acquires grid power information, which includes information on the amount of grid power supplied from the power grid to the building where the charging device is installed; and a verification unit that verifies the credibility of the amount of green charging included in the charging information for the vehicle based on the amount of grid charging included in the charging information for the vehicle and the amount of grid power included in the grid power information. According to the power information management system of Configuration 1, by determining whether the amount of grid-connected power supplied to the charging device is an appropriate value, the reliability of the value of the green charge amount, which is a charging power element other than the grid charge amount included in the charging information, can be appropriately verified.

[0058] (Configuration 2) The power information management system according to Configuration 1, wherein the charging device stores the charging information for one vehicle that the charging device has charged, the charging information acquisition unit acquires the stored charging information for one vehicle via another vehicle different from the one vehicle, and the verification unit verifies the reliability of the green charging amount included in the charging information for one vehicle based on the grid charging amount included in the charging information for one vehicle and the grid power supply amount included in the grid power information. According to the power information management system of Configuration 2, even charging information for vehicles without communication capabilities can be obtained from the charging device via a vehicle with communication capabilities, and the reliability of the green charging amount included in that charging information can be appropriately verified.

[0059] (Configuration 3) The power information management system according to Configuration 1 or 2, wherein the charging information includes the date and time when the corresponding vehicle was charged, the grid power information includes the date and time when power was supplied to the building in accordance with the grid power supply amount, and the verification unit verifies the authenticity of the green charging amount at the charging date and time included in the charging information based on the grid charging amount at the charging date and time and the grid power supply amount at the power supply date and time that matches the charging date and time. According to the power information management system of configuration 3, the charging information for the charging operation can be evaluated based on the amount of power supplied to the grid during the time period in which the charging device performed the charging operation on the vehicle. Therefore, the reliability of the amount of green charging included in the charging information can be verified more appropriately.

[0060] (Configuration 4) A power information management method performed by a computer of a power information management system having a charging device that charges an on-board battery mounted on a vehicle by receiving green power, which is renewable energy, and grid power from the power grid, and a management device that manages the origin of the charging power charged to the on-board battery of the vehicle, the method comprising: a charging information acquisition step of acquiring charging information for the vehicle from the charging device via one of the vehicles, which includes information on the amount of green charging, which is the amount of charging power derived from the green power, and information on the amount of grid charging, which is the amount of charging power derived from the grid power, which is included in the charging power charged to the vehicle by the charging device; a grid information acquisition step of acquiring grid power information, which includes information on the amount of grid power supplied from the power grid to the building where the charging device is installed; and a verification step of verifying the credibility of the amount of green charging included in the charging information for the vehicle based on the amount of grid charging included in the charging information for the vehicle and the amount of grid power included in the grid power information. According to the power information management method of Configuration 4, by determining whether the grid charge amount included in the charging information is an appropriate value from the amount of grid power supplied to the charging device, the reliability of the value of the green charge amount, which is a charging power element other than the grid charge amount included in the charging information, can be appropriately verified. [Explanation of Symbols]

[0061] 1...Power information management system, 2...Building, 3...Charging device, 4...Management device, 5, 5a, 5b...Vehicle, 6, 6a, 6b...On-board battery, 7...Power system, 71...Power plant, 72...Power grid, 8...Solar panel, 9...Power company server, 10...On-board communication device, 11...Communication network, 20...First processor, 21...First memory, 22...First communication device, 23...Authenticity information, 24...Charging information acquisition unit, 25...System information acquisition unit, 26...Verification unit, 30...Charging circuit, 31...Output connector, 32 ...First charging circuit, 33...Second charging circuit, 34...First charge amount measurement circuit, 35...Second charge amount measurement circuit, 40...Second processor, 41...Second memory, 42...Second communication device, 43...Camera, 44...Charging history, 45...Power amount acquisition unit, 46...Information generation unit, 50...Power supply circuit, 51...Remaining charge sensor, 52...Vehicle control device, 53...Drive motor, 54...Power supply connector, 55...Charging connector, 60...Information provision device, 61...Third processor, 62...Third memory, 63...Power information acquisition unit, 64...Information provision unit.

Claims

1. A charging device that charges the vehicle's onboard battery using renewable energy, namely green electricity, and grid power from the power grid, A management device for managing the origin of the charging power charged to the vehicle's onboard battery, Equipped with, The aforementioned control device is A charging information acquisition unit acquires charging information for the vehicle from the charging device via any of the vehicles, including information on the amount of green charge, which is the charging power derived from the green power included in the charging power charged to the vehicle by the charging device, and information on the amount of grid charge, which is the charging power derived from the grid power. A system information acquisition unit that acquires system power information including information on the amount of system power supplied, which is the power supplied from the power system to the building where the charging device is installed, A verification unit that verifies the reliability of the green charge amount included in the charging information for the vehicle, based on the grid charge amount included in the charging information for the vehicle and the grid power supply amount included in the grid power information, Having, Power information management system.

2. The charging device stores the charging information for a vehicle that has been charged by the charging device. The charging information acquisition unit acquires the stored charging information for the one vehicle via another vehicle different from the one vehicle. The verification unit verifies the reliability of the green charge amount included in the charging information for the vehicle, based on the grid charge amount included in the charging information for the vehicle and the grid power supply amount included in the grid power information. The power information management system according to claim 1.

3. The aforementioned charging information includes the date and time when the corresponding vehicle was charged. The aforementioned grid power information includes the date and time of power supply to the building, corresponding to the amount of power supplied to the grid. The verification unit verifies the reliability of the green charge amount at the charging date and time, as included in the charging information, based on the system charge amount at the charging date and time and the system power supply amount at the power supply date and time that coincides with the charging date and time. The power information management system according to claim 1 or 2.

4. A power information management method performed by a computer of a power information management system having a charging device that charges an on-board battery installed in a vehicle by receiving green power, which is renewable energy, and grid power from the power grid, and a management device that manages the origin of the charging power charged in the on-board battery of the vehicle, A charging information acquisition step of acquiring charging information for the vehicle from the charging device via any of the vehicles, including information on the amount of green charge, which is the amount of green power included in the charging power charged to the vehicle by the charging device, and information on the amount of grid charge, which is the amount of charging power derived from grid power. A system information acquisition step, which includes acquiring system power information including information on the amount of system power supplied, which is the power supplied from the power system to the building on which the charging device is installed, A verification step to verify the credibility of the green charge amount included in the charging information for the vehicle, based on the grid charge amount included in the charging information for the vehicle and the grid power supply amount included in the grid power information, Having, Power information management method.

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