Calculation device, vehicle, management server, and calculation method

Abstract

To specify an index value of a first electricity amount accumulated in a vehicle.SOLUTION: An arithmetic operation apparatus 500 renews accumulation information 170 on the basis of first information 171 relating to charged first electrical power when a battery is charged by an electric vehicle supply equipment (EVSE) 40 installed outside a vehicle 50. The arithmetic operation apparatus 500 renews the accumulation information 170 on the basis of second information 172 relating to discharged second electrical power when the battery discharges power to the EVSE 40.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a computing device, a vehicle, a management server, and a computing method. [Background technology]

[0002] For example, Japanese Patent Application Laid-Open Publication No. 2020-156149 (Patent Document 1) discloses that electric power is supplied to a vehicle in a so-called VPP (Virtual Power Plant). This electric power includes so-called green electric power and normal electric power. Green electric power is electric power generated from renewable energy (such as solar power). Normal electric power is electric power generated from non-renewable energy (such as thermal power). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-156149 Summary of the Invention [Problem to be solved by the invention]

[0004] Hereinafter, green power will also be referred to as "first power," and regular power will also be referred to as "second power." Generally, from the perspective of environmental protection, it is preferable to use green power (first power) rather than regular power (second power). Therefore, it is conceivable to add a higher value to green power than regular power. For example, it is conceivable to set the unit price of green power higher than the unit price of regular power as the selling price of electricity. However, JP 2020-156149 A did not take into consideration the amount of first power charged to the vehicle.

[0005] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide a technology that can identify an index value of the amount of first power stored in a vehicle. [Means for solving the problem]

[0006] (Item 1) The computing device of the present disclosure is a device related to a battery that stores power including a first power obtained from renewable energy and a second power different from the first power. The battery is mounted on a vehicle. The computing device includes a memory and a controller. The memory stores accumulated information including an index value of the amount of power of the first power stored in the battery. The controller controls the memory. When the battery is charged by a power device provided outside the vehicle, the controller updates the accumulated information based on first information about the charged first power. Furthermore, when the battery is discharged to the power device, the controller updates the accumulated information based on second information about the discharged first power.

[0007] According to this configuration, the computing device stores accumulated information including an index value of the amount of power of the first power obtained from renewable energy. The computing device updates the accumulated information when the battery is charged and when the battery is discharged. Therefore, the computing device can identify the index value of the amount of power of the first power among the accumulated amounts of power.

[0008] (Clause 2) In the arithmetic device according to clause 1, the arithmetic device acquires first information generated based on a user's designation. The controller updates the stored information based on the acquired first information.

[0009] According to this configuration, the arithmetic device can update the stored information based on the first information that reflects the user's designation.

[0010] (Clause 3) In the arithmetic device according to clause 1 or 2, the arithmetic device acquires second information generated based on a user's designation. Then, the controller updates the stored information based on the acquired second information.

[0011] According to this configuration, the arithmetic device can update the stored information based on the second information that reflects the user's designation.

[0012] (4) In the computing device according to any one of paragraphs 1 to 3, the memory stores third information used to calculate the first power consumed from when the vehicle starts to be driven until when the vehicle stops to be driven, and the controller updates the accumulated information based on the third information when the vehicle stops to be driven.

[0013] With this configuration, the arithmetic device can update the stored information based on the amount of power consumed from when the vehicle starts to be driven until when the vehicle stops to be driven.

[0014] (Clause 5) In the performance device described in Clause 4, the third information specifies the proportion of first power consumed in the total power consumed from when the vehicle starts to move until when the vehicle stops to move, and the proportion of first power in the third information is specified by the user.

[0015] With this configuration, the arithmetic device can update the stored information based on the third information that reflects the ratio of the first power specified by the user.

[0016] (Clause 6) A computing device according to any one of clauses 1 to 5, wherein the memory stores fourth information used to calculate a first power consumed from when the vehicle stops driving to when the vehicle starts driving, and the controller updates the accumulated information based on the fourth information when the vehicle starts driving.

[0017] With this configuration, the arithmetic device can update the stored information based on the amount of power consumed from when the vehicle stops to when the vehicle starts to drive again.

[0018] (Clause 7) In the calculation device described in clause 6, the fourth information specifies the proportion of first power consumed in the total power consumed from when the vehicle stops driving to when the vehicle starts driving, and the proportion of first power in the fourth information is specified by the user.

[0019] With this configuration, the arithmetic device can update the stored information based on the fourth information that reflects the ratio of the first power designated by the user.

[0020] (Item 8) In the calculation device described in item 6, the fourth information specifies the proportion of the first power consumed in the power consumed from when the vehicle stops driving to when the vehicle starts driving, and the proportion of the first power in the fourth information is 0%.

[0021] According to this configuration, the first power consumed from when the vehicle stops driving to when the vehicle starts driving can be set to 0. Therefore, it is possible to prevent the first power, which has a high value, from decreasing, and as a result, it is possible to suppress a decrease in the value of the stored power.

[0022] (Item 9) The arithmetic device according to any one of Items 1 to 8, wherein the arithmetic device notifies the user of the vehicle of the updated stored information.

[0023] With this configuration, the user of the vehicle can be made aware of the stored information. (10th paragraph) A vehicle of the present disclosure includes the arithmetic device according to any one of the first to ninth paragraphs.

[0024] (Item 11) A management server of the present disclosure manages vehicles. The management server further includes the arithmetic device according to any one of items 1 to 9, and the memory stores accumulated information of a vehicle for each piece of vehicle identification information of the vehicle.

[0025] (Article 12) A calculation method disclosed herein relates to a battery that stores power including a first power obtained from renewable energy and a second power different from the first power. The battery is mounted on a vehicle. The calculation method includes, when the battery is charged by a power device provided outside the vehicle, updating stored information including an index value of the amount of power of the first power stored in the battery. The calculation method also includes, when the battery is discharged to the power device, updating the stored information based on second information related to the first power being discharged. [Effects of the Invention]

[0026] According to the present disclosure, it is possible to identify an index value for the amount of first electric power stored in a vehicle. [Brief explanation of the drawings]

[0027] [Figure 1] 1 is a diagram illustrating an example of the configuration of a management system 300 according to the present embodiment. [Figure 2] FIG. 2 is a diagram showing the configuration of a vehicle 50. [Figure 3] FIG. 2 is a diagram showing a vehicle DB211. [Figure 4] FIG. 5 is a functional block diagram of a computing device 500. [Figure 5] FIG. 10 is a diagram for explaining the processing of an update unit 504 when a first condition is met. [Figure 6] FIG. 10 is a diagram for explaining the processing of the update unit 504 when a second condition is met. [Figure 7] FIG. 10 is a diagram for explaining the processing of the update unit 504 when a third condition is met. [Figure 8] FIG. 10 is a diagram for explaining the processing of the update unit 504 when a fourth condition is met. [Figure 9] 10 is an example of a power screen displayed on the display 162. [Figure 10] 10 is a flowchart showing the flow of a main charging process of a vehicle 50, a management server 2, and an EVSE 40. [Figure 11]10 is a flowchart showing the flow of a main discharge process of a vehicle 50, a management server 2, and an EVSE 40. [Figure 12] 10 is a flowchart showing main processes of a vehicle 50 and a management server 2. [Figure 13] FIG. 10 is a diagram illustrating an example of an input screen. [Figure 14] FIG. 10 is a diagram illustrating an example of an input screen. DETAILED DESCRIPTION OF THE INVENTION

[0028] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference numerals, and description thereof will not be repeated.

[0029] [Overall configuration of the management system] Fig. 1 is a diagram showing an example of the configuration of a management system 300 according to the present embodiment. Referring to Fig. 1, management system 300 includes a management server 2, a plurality of vehicles 50, and a plurality of EVSEs (Electric Vehicle Supply Equipment) 40. EVSEs 40 correspond to the "electric power device" of the present disclosure.

[0030] The vehicle 50 is an electrically powered vehicle, and more specifically, is an electric vehicle (EV), a plug-in hybrid vehicle (PHV), etc. In this embodiment, the vehicle 50 is an EV. The vehicle 50 also includes a battery 130.

[0031] The EVSE 40 charges the battery 130 of the vehicle 50. This charging is also referred to as "external charging." The vehicle 50 also discharges power from the EVSE 40. This discharging is also referred to as "external discharging."

[0032] The electric power charged from the EVSE 20 to the vehicle 50 is supplied from the electric power grid PG. The electric power supplied to the electric power grid PG includes green electric power and normal electric power. Green electric power is electric power generated by renewable energy. Examples of renewable energy include solar, wind, biomass, hydroelectric, and geothermal. In the example of FIG. 1 , green electric power is generated by solar power generation 201, hydroelectric power generation 202, wind power generation 203, and geothermal power generation 204.

[0033] Regular electricity is electricity that is different from green electricity. Regular electricity is electricity generated by non-renewable energy sources. Non-renewable energy sources include coal, gas, and oil. In the example of FIG. 1, regular electricity is generated by thermal power generation 205. "Green electricity" corresponds to "first electricity" in this disclosure. "Regular electricity" corresponds to "second electricity" in this disclosure. Green electricity and regular electricity are also collectively referred to as "total electricity."

[0034] The management server 2 manages the management system 300. The management server 2 includes an arithmetic device 500. The arithmetic device 500 includes a control device 251, a storage device 252, and a communication device 253. The control device 251 includes a processor and is configured to execute predetermined arithmetic processing. In FIG. 1, the "processor" is written as "PRC." The "processor" corresponds to the "controller" in the present disclosure. The communication device 253 includes a communication interface and communicates with external devices (the vehicle 50 and the EVSE 40). In FIG. 1, the "communication interface" is written as "COM."

[0035] The storage device 252 includes a memory that stores the program executed by the control device 251. The storage device 252 stores various information (maps, relational expressions, parameters, etc.) used in the program. In Fig. 1, "memory" is written as "MEM."

[0036] The storage device 252 further stores a vehicle DB (Data Base) 211, a green electricity unit price 213, and a normal electricity unit price 214. The vehicle DB 211 will be described later. The green electricity unit price 213 is information indicating the unit price of green electricity. The green electricity unit price 213 indicates, for example, the purchase price and sale price of a unit amount of green electricity (for example, 1 kWh). The normal electricity unit price 214 is information indicating the unit price of normal electricity. The normal electricity unit price 214 indicates, for example, the purchase price and sale price of a unit amount of normal electricity (for example, 1 kWh). The management server 2 may change the green electricity unit price 213 and the normal electricity unit price 214 depending on the production volume of green electricity and the production volume of normal electricity, etc.

[0037] Furthermore, the management system 300 may be applied to, for example, a VPP (Virtual Power Plant). In this case, the management server 2 serves as a so-called aggregator server.

[0038] [Vehicle configuration] Fig. 2 is a diagram illustrating the configuration of vehicle 50. Referring to Fig. 2, as described above, vehicle 50 includes battery 130 that stores electric power for traveling. Vehicle 50 is configured to be able to travel using the electric power stored in battery 130.

[0039] The battery 130 includes a secondary battery such as a lithium ion battery or a nickel-metal hydride battery. In this embodiment, a battery pack including a plurality of lithium ion batteries is used as the secondary battery.

[0040] The vehicle 50 includes an ECU (engine control unit) 150. The ECU 150 is configured to perform charging control and discharging control of the battery 130. The ECU 150 is also configured to communicate with a device (management server 2) external to the vehicle 50.

[0041] The vehicle 50 further includes a monitoring module 131. The monitoring module 131 estimates a value related to the remaining power of the battery 130. This value may be the remaining power itself, or may be the SOC (State Of Charge) of the battery 130. In this embodiment, the value related to the remaining power is the remaining power itself.

[0042] The EVSE 40 includes a control unit 41, a power supply circuit 44, and a charging cable 42. The control unit 41 and the power supply circuit 44 are built into the main body of the EVSE 40. The charging cable 42 is connected to the main body of the EVSE 40. The charging cable 42 may be always connected to the main body of the EVSE 40, or may be detachable from the main body of the EVSE 40. The charging cable 42 has a connector 43 at its tip and includes a power line inside. The control unit 41 controls the power supply circuit 44. The EVSE 40 also holds an EVSEID for identifying the EVSE 40.

[0043] The vehicle 50 includes an inlet 110 and a charger / discharger 120 for external charging and external discharging. The inlet 110 is configured to transmit and receive electric power to and from the outside of the vehicle 50. The inlet 110 is configured to allow connection of a connector 43 of a charging cable 42. When the connector 43 is connected (plugged in) to the inlet 110 of the vehicle 50, the vehicle 50 enters a chargeable state (a state in which it can receive power from the EVSE 40) and a dischargeable state from the vehicle 50 (a state in which it can transmit power to the EVSE 40).

[0044] The charger / discharger 120 is located between the inlet 110 and the battery 130. The charger / discharger 120 includes a relay that switches between connection and disconnection of a power path from the inlet 110 to the battery 130, and a power conversion circuit (neither of which is shown). The power conversion circuit may include a bidirectional converter. Each of the relay and the power conversion circuit included in the charger / discharger 120 is controlled by the ECU 150. The vehicle 50 further includes a monitoring module 121 that monitors the state of the charger / discharger 120. The monitoring module 121 includes various sensors that detect the state of the charger / discharger 120, and outputs the detection results to the ECU 150. In this embodiment, the monitoring module 121 is configured to detect the voltage and current input to the power conversion circuit and the voltage and current output from the power conversion circuit.

[0045] A vehicle 50 in a chargeable / dischargeable state is capable of external charging and external discharging. In this embodiment, to perform external charging of the vehicle 50, the user of the vehicle 50 pays the power supplier an amount corresponding to the charging power. Furthermore, by performing external discharging of the vehicle 50, the user receives an amount corresponding to the discharged power from the power receiver. The user of the vehicle 50 is the driver or passenger of the vehicle 50.

[0046] Electric power for external charging is supplied to inlet 110 from, for example, EVSE 40 via charging cable 42. Charger / discharger 120 is configured to convert the electric power received by inlet 110 into electric power suitable for charging battery 130 and output the converted electric power to battery 130. Electric power for external power supply is supplied from battery 130 to charger / discharger 120. Charger / discharger 120 is configured to convert the electric power supplied from battery 130 into electric power suitable for external power supply and output the converted electric power to inlet 110. When either external charging or external discharging is being performed, the relay of charger / discharger 120 is closed (connected), and when neither external charging nor external discharging is being performed, the relay of charger / discharger 120 is opened (disconnected).

[0047] The ECU 150 includes a processor 151, a random access memory (RAM) 152, a storage device 153, and a timer 154. The ECU 150 may be a computer. The processor 151 may be a central processing unit (CPU). The RAM 152 functions as a working memory that temporarily stores data processed by the processor 151. The storage device 153 is configured to be able to save stored information. The storage device 153 includes, for example, a read-only memory (ROM) and a rewritable non-volatile memory. The storage device 153 stores programs as well as information used by the programs (for example, maps, mathematical formulas, and various parameters). In this embodiment, the processor 151 executes the programs stored in the storage device 153, thereby performing various types of control in the ECU 150. However, the various types of control in the ECU 150 are not limited to being performed by software, and can also be performed by dedicated hardware (electronic circuits). The ECU 150 may include any number of processors, and a processor may be provided for each predetermined control.

[0048] Timer 154 is configured to notify processor 151 of the arrival of a set time. When the time set in timer 154 arrives, timer 154 transmits a signal notifying processor 151 of the arrival of the set time. In this embodiment, a timer circuit is used as timer 154. However, timer 154 may be realized by software rather than hardware (timer circuit). Furthermore, ECU 150 can obtain the current time by using a real-time clock (RTC) circuit (not shown) built into ECU 150.

[0049] Vehicle 50 further includes a driving unit 140, an input device 161, a display 162, a communication device 180, and driving wheels W. The drive system of vehicle 50 is not limited to the front-wheel drive shown in FIG. 2, but may be rear-wheel drive or four-wheel drive.

[0050] The traveling drive unit 140 includes a PCU (Power Control Unit) and an MG (Motor Generator), and is configured to travel the vehicle 50 using power stored in the battery 130. The PCU includes, for example, an inverter, a converter, and a relay (hereinafter referred to as an "SMR (System Main Relay)"). The PCU is controlled by the ECU 150. The MG is, for example, a three-phase AC motor generator. The MG is configured to be driven by the PCU and rotate the driving wheels W. The PCU drives the MG using power supplied from the battery 130. The MG is also configured to perform regenerative power generation and supply the generated power to the battery 130. The SMR is configured to switch between connection and disconnection of a power path from the battery 130 to the MG. The SMR is set to a closed state (connected state) when the vehicle 50 is traveling.

[0051] The input device 161 is a device that accepts input from a user. The input device 161 is operated by the user and outputs a signal corresponding to the user's operation to the ECU 150. The input device 161 is any of various switches, various pointing devices, a keyboard, and a touch panel. The input device 161 may include a smart speaker that accepts voice input. Driving of the vehicle 50 starts when the user performs a start operation on the input device 161. Driving of the vehicle 50 ends when the user performs a stop operation on the input device 161.

[0052] Furthermore, when the inlet 110 of the vehicle 50 is connected to the connector 43 of the EVSE 40, the user can select external charging by the EVSE 40 or external discharging to the EVSE 40. The input device 161 accepts the selection operation from the user.

[0053] The display 162 displays various images, such as a navigation screen (a driving route from the current position of the vehicle 50 to a destination, etc.).

[0054] The communication device 180 includes various communication I / Fs (interfaces). The ECU 150 can communicate with the management server 2 (see FIG. 1) through the communication device 180.

[0055] [Vehicle DB] Next, the vehicle DB 211 (see FIG. 1) held by the management server 2 will be described. FIG. 3 is a diagram schematically illustrating the vehicle DB 211. In this embodiment, vehicle identification information for identifying each vehicle 50 included in the management system 300 (see FIG. 1) is assigned to the vehicle 50. In the example of FIG. 3, a vehicle ID (Identification) is shown as an example of vehicle identification information.

[0056] In the example of FIG. 3, an index value for the amount of green energy and an index value for the amount of normal energy are stored corresponding to a vehicle ID. Here, the "index value for the amount of energy" is not a value that accurately indicates the amount of energy, but merely a value that indicates an index of the amount of energy. In this embodiment, the "index value for the amount of energy" is a value that indicates the amount of energy itself. In other words, the "index value for the amount of green energy" is a value that indicates the amount of green energy itself out of the remaining energy of the battery 130. Furthermore, the "index value for the amount of normal energy" is a value that indicates the amount of normal energy itself out of the remaining energy of the battery 130. In this way, the management server 2 stores the index values ​​for the amount of green energy and the index values ​​for the amount of normal energy of all vehicles 50. Furthermore, the index values ​​for the amount of green energy and the index values ​​for the amount of normal energy are collectively referred to as "accumulated information." The vehicle DB 211 stores accumulated information for each vehicle ID. Note that, as a variant, the accumulated information may include the index value for the amount of green energy without including the index value for the amount of normal energy.

[0057] Next, the reason why the index value of the amount of green power is stored will be explained. Generally, from the viewpoint of environmental protection, it is preferable to use green power rather than normal power. Therefore, it is possible to attach a higher value to green power than normal power. For example, it is possible to set the green power unit price 213 higher than the normal power unit price 214 as the selling price of power. In this way, the user can sell green power per unit of power at a higher price than normal power per unit of power. Therefore, it is possible to encourage the use of green power among users of vehicle 50, which ultimately contributes to environmental protection.

[0058] Therefore, in this embodiment, the arithmetic device 500 of the management server 2 stores an index value of the amount of green energy for each vehicle. Therefore, the arithmetic device 500 can calculate the selling price of the green energy out of the total power of the battery 130 based on the index value of the amount of green energy. Specifically, the arithmetic device 500 can calculate the total selling price of the green energy by multiplying the index value of the amount of green energy to be sold (discharged) by the unit price (selling price) of the amount of green energy.

[0059] In the example of Figure 3, for example, the accumulated information corresponding to vehicle 50 with vehicle ID P1 specifies that the index value for green energy is A1 (kWh) and the index value for normal energy is B1 (kWh).

[0060] [Functional block diagram of the computing unit] Fig. 4 is a functional block diagram of the arithmetic device 500. In the example of Fig. 4, the arithmetic device 500 has an acquisition unit 502, an update unit 504, and a storage unit 506. The storage unit 506 stores the vehicle DB 210 (accumulated information 170 for each vehicle ID) and third information 173, which will be described later. Fourth information 174, indicated by a dashed line, will be described later.

[0061] The acquisition unit 502 acquires various information from an external device (EVSE 40 or vehicle 50). The various information includes first information 171, second information 172, power consumption amount 176, and vehicle ID 178.

[0062] The information acquired by the acquisition unit 502 is output to the update unit 504. The update unit 504 updates the accumulated information 170 (the index value of the amount of green energy and the index value of the amount of normal energy) based on the information when a predetermined update condition is met. The update conditions for the accumulated information include a first condition, a second condition, a third condition, and a fourth condition.

[0063] The first condition is met when external charging of the vehicle 50 by the EVSE 40 ends. The second condition is met when external discharging from the vehicle 50 to the EVSE 40 ends. The third condition is met when the vehicle 50 starts to drive. The fourth condition is met when the vehicle 50 stops to drive.

[0064] When the first condition is met, the acquisition unit 502 acquires first information 171 from the EVSE 40. The update unit 504 updates the accumulated information 170 in the storage unit 506 based on the first information 171. Here, the first information 171 will be described. When charging the battery 130 of the vehicle 50, the user inputs (specifies) the amount of green energy and the amount of normal energy desired to be charged into the input device 161. In this embodiment, for simplicity of explanation, it is assumed that the total amount of energy, the amount of green energy and the amount of normal energy specified by the user, is charged to the battery 130. In this embodiment, the first information 171 is information based on the amount of green energy and the amount of normal energy specified by the user.

[0065] Furthermore, when the second condition is met, the acquisition unit 502 acquires the second information 172 from the EVSE 40. Here, the second information 172 will be described. When discharging the battery 130 of the vehicle 50 to the EVSE 40, the user inputs (specifies) the amount of green energy and the amount of normal energy desired to be discharged into the input device 161. In this embodiment, for simplicity of explanation, it is assumed that the total amount of energy, the amount of green energy and the amount of normal energy specified by the user, is discharged to the EVSE 40. In this embodiment, the second information 172 is information based on the amount of green energy and the amount of normal energy specified by the user.

[0066] Furthermore, when the third condition or the fourth condition is met, the acquisition unit 502 acquires the power consumption amount 176 of the battery 130 of the vehicle 50 from the vehicle 50. The update unit 504 updates the accumulated information 170 based on the power consumption amount 176 and the third information 173.

[0067] The acquisition unit 502 acquires the vehicle ID 178 from the vehicle 50 at a timing related to the establishment of the first to fourth conditions. The update unit 504 updates the stored information 170 corresponding to the vehicle ID 178 in the vehicle DB 210. The timing of acquiring the vehicle ID 178 will be described later.

[0068] [Update part processing] Next, a detailed description will be given of the processing of update unit 504. Fig. 5 is a diagram for explaining the processing of update unit 504 when external charging is completed (when the first condition is met).

[0069] 5(A) shows the total power (remaining power) of the battery 130 before charging and the accumulated information 170. Also, FIG. 5(B) shows the total power (remaining power) of the battery 130 at the end of charging and the updated accumulated information 170.

[0070] 5 and FIGS. 6 to 8 described later, the amount of green energy and the amount of normal energy of the battery 130 are the index values ​​of the amount of green energy and the index values ​​of the amount of normal energy indicated by the accumulated information 170, respectively.

[0071] 5(A), the accumulated information 170 indicates that the amount of green energy is A (kWh) and the amount of normal energy is B (kWh). Hereinafter, the amount of green energy designated for charging by the user will also be referred to as "amount of green energy charged," and the amount of normal energy designated for charging by the user will also be referred to as "amount of normal energy charged."

[0072] The first information 171 indicates that the amount of green energy to be charged specified by the user is D1 (kWh) and the amount of normal energy to be charged specified by the user is E1 (kWh). In this case, the update unit 504 (see FIG. 4) updates the index value of the amount of green energy in the accumulation information 170 from "A (kWh)" to "A+D1 (kWh)". The update unit 504 also updates the index value of the amount of green energy in the accumulation information 170 from "B (kWh)" to "B+E1 (kWh)".

[0073] 6A and 6B are diagrams for explaining the processing of update unit 504 when external discharging is completed (when the second condition is met). Fig. 6A shows the total power (remaining power) of battery 130 before discharging and accumulated information 170. Fig. 6B shows the total power (remaining power) of battery 130 at the end of discharging and accumulated information 170.

[0074] 6(A), the accumulated information 170 indicates that the amount of green energy is A (kWh) and the amount of normal energy is B (kWh). Hereinafter, the amount of green energy designated to be discharged by the user will also be referred to as "amount of discharged green energy," and the amount of normal energy designated to be discharged by the user will also be referred to as "amount of discharged normal energy."

[0075] The second information 172 indicates that the amount of discharged green energy is D2 (kWh) and the amount of normal energy discharge is E2 (kWh). In this case, the update unit 504 (see FIG. 4) updates the amount of green energy in the accumulated information 170 from "A (kWh)" to "A-D2 (kWh)". The update unit 504 also updates the amount of green energy in the accumulated information 170 from "B (kWh)" to "B-E2 (kWh)".

[0076] According to this configuration, the arithmetic device 500 stores accumulated information 170 including an index value of the amount of green power obtained from renewable energy (see FIG. 3). The arithmetic device 500 updates the accumulated information 170 when the battery 130 is charged and when the battery 130 is discharged (see FIGS. 5 and 6). Therefore, the arithmetic device 500 can identify an index value of the amount of first power among the accumulated amounts of power. Therefore, the arithmetic device 500 can calculate the total selling price of the amount of green power, which is more valuable than regular power.

[0077] Furthermore, when the battery 130 is charged by the EVSE 40, the arithmetic device 500 acquires first information 171 (see FIG. 4) and updates the accumulated information 170 based on the acquired first information 171 (see FIG. 5). This first information 171 is information based on the amount of green energy charged and the amount of normal energy charged specified by the user. Therefore, the arithmetic device 500 can update the accumulated information 170 based on the first information 171 that reflects the user's specification.

[0078] Furthermore, when the battery 130 is charged by the EVSE 40, the computing device 500 acquires second information 172 (see FIG. 4) and updates the accumulated information 170 based on the acquired second information 172 (see FIG. 5). This second information 172 is information based on the amount of discharged green energy and the amount of discharged normal energy specified by the user. Therefore, the computing device 500 can update the accumulated information 170 based on the second information 172 that reflects the user's specification.

[0079] 7A and 7B are diagrams for explaining the processing of the update unit 504 when the driving of the vehicle 50 stops (when the third condition is met). Fig. 7A shows the total power (remaining power) of the battery 130 and the accumulated information 170 when the driving of the vehicle 50 starts. Fig. 7B shows the total power (remaining power) of the battery 130 and the accumulated information 170 when the driving of the vehicle 50 stops.

[0080] 7(A), the accumulated information 170 indicates that the amount of green energy is A (kWh) and the amount of normal energy is B (kWh). Furthermore, the amount of power consumed by the vehicle 50 traveling from the time the vehicle 50 starts to be driven until the time the vehicle stops is assumed to be M (kWh). This amount of power consumption is transmitted from the vehicle 50 to the management server 2 when the third condition is met.

[0081] In the present embodiment, the vehicle 50 stores the total amount of power of the vehicle 50 in the RAM 152 when the vehicle 50 starts to drive and when the vehicle 50 stops to drive. Then, when the vehicle 50 stops to drive, the vehicle 50 calculates the power consumption (M (kWh)) by subtracting the total amount of power when the vehicle 50 was stopped from the total amount of power when the vehicle 50 was driven immediately before the stop.

[0082] Furthermore, in this embodiment, vehicle 50 updates accumulated information 170 using third information 173. Third information 173 is information used to calculate the amount of green power consumed from when vehicle 50 starts to drive until when vehicle 50 stops to drive. In this embodiment, third information 173 specifies the breakdown (ratio) of power consumption. In the example of FIG. 7, it is specified that the ratio of green power is D3 (%) and the ratio of normal power is E3 (%), where D3 + E3 = 100 (%). In this embodiment, green power ratio D3 (%) and normal power ratio E3 (%) are fixed values.

[0083] In such a case, since the power consumption is M (kWh), the update unit 504 determines, based on the breakdown of the third information 173, that the power consumption of green electricity is "M×(D3) / 100" (kWh), and that the power consumption of normal electricity is "M×(E3) / 100" (kWh).

[0084] That is, the update unit 504 updates the amount of green energy in the accumulated information 170 from "A (kWh)" to "A-{M×(D3) / 100}(kWh)". The update unit 504 also updates the amount of normal energy in the accumulated information 170 from "B (kWh)" to "B-{M×(E3) / 100}(kWh)". With this configuration, the calculation device 500 can update the accumulated information based on the amount of energy consumed from when the vehicle 50 starts to drive until when the vehicle 50 stops to drive.

[0085] 8A and 8B are diagrams for explaining the processing of the update unit 504 when the vehicle 50 starts to drive (when the fourth condition is met). Fig. 8A shows the total power (remaining power) of the battery 130 and the accumulated information 170 when the vehicle 50 stops driving. Fig. 8B shows the total power (remaining power) of the battery 130 and the accumulated information 170 when the vehicle 50 starts to drive.

[0086] In FIG. 8(A), the accumulated information 170 indicates that the amount of green energy is A (kWh) and the amount of normal energy is B (kWh). Furthermore, the battery 130 self-discharges from the time when the vehicle 50 stops driving until the time when the vehicle starts driving again. Therefore, the power of the battery 130 is consumed. The power consumption due to self-discharge is assumed to be N (kWh). This power consumption is transmitted from the vehicle 50 to the management server 2.

[0087] In this embodiment, when the vehicle 50 starts driving, the vehicle 50 calculates the power consumption (N (kWh)) by subtracting the total amount of power at the start from the total amount of power at the time of the most recent stop before the start.

[0088] Furthermore, the breakdown (ratio) of power consumption when the fourth condition is met is stipulated as follows: the ratio of green power is 0% and the ratio of normal power is 100%. In other words, in this embodiment, the calculation device 500 determines that the power consumption due to self-discharge of the battery 130 is only normal power, and no green power. Therefore, the update unit 504 maintains the amount of green power in the accumulated information 170 as “A (kWh).” Furthermore, the update unit 504 updates the amount of normal power in the accumulated information 170 from “B (kWh)” to “BN (kWh).” With this configuration, the calculation device 500 can update the accumulated information based on the amount of power consumption due to self-discharge from the time when driving of the vehicle 50 ends to the time when driving of the vehicle 50 starts. Furthermore, if control is performed to consume green power due to self-discharge that occurs regardless of the user's use of the vehicle 50, this may cause distrust among the user. Therefore, when self-discharge occurs, it is considered that only normal power is consumed, and no green power is consumed. This can reduce such distrust.

[0089] [Display accumulated information] Furthermore, the arithmetic device 500 may notify the user of the vehicle of the stored information 170. For example, the user performs a predetermined operation on the input device 161, which causes the ECU 150 of the vehicle to transmit a request signal for requesting the stored information to the management server 2. The request signal includes the ID of the vehicle that has the ECU 150.

[0090] The arithmetic device 500 refers to the vehicle DB 211 (see FIG. 3 ), extracts the accumulated information (the index value of the amount of green energy and the index value of the amount of normal energy) corresponding to the transmitted vehicle ID, and transmits the accumulated information to the vehicle 50. Upon acquiring the accumulated information, the vehicle 50 notifies the vehicle 50 of the accumulated information. For example, the vehicle 50 displays an electricity screen based on the accumulated information on the display 162.

[0091] FIG. 9 is an example of an electricity screen displayed on the display 162. In the example of FIG. 9, a text image is displayed stating, "The current amount of green electricity is A (kWh). The current amount of normal electricity is B (kWh)." The notification of the accumulated information is not limited to a screen display, but may also be an audio output of the accumulated information. This configuration allows the user to recognize the accumulated information (the amount of green electricity and the amount of normal electricity).

[0092] [flowchart] Fig. 10 explains the main processing flow of the vehicle 50, the management server 2, and the EVSE 40. Fig. 10 is a flowchart showing the main processing flow of the charging process for the battery 130 of the vehicle 50. The processing in Fig. 10 starts on the condition that charging of the battery 130 is specified by the user and the connector 43 of the EVSE 40 (see Fig. 2) is connected to the inlet 110 of the vehicle 50.

[0093] In step S2, the vehicle 50 acquires the EVSEID of the connected EVSE 40 from the EVSE 40. Next, in step S4, the vehicle 50 transmits charge request information, the vehicle ID of the vehicle 50, and the EVSEID to the management server 2. The charge request information is information for requesting charging of the battery 130 of the vehicle 50. The EVSEID is the information acquired in step S2.

[0094] Next, in step S6, the management server 2 transmits the green electricity unit price (purchase price), the normal electricity unit price (purchase price), the current index value of the amount of green electricity, and the current index value of the amount of normal electricity to the vehicle 50. The green electricity unit price (purchase price) corresponds to the green electricity unit price 213 shown in Fig. 1, and the normal electricity unit price (purchase price) corresponds to the normal electricity unit price 214 shown in Fig. 1. The current index value of the amount of green electricity and the current index value of the amount of normal electricity are the index value of the amount of green electricity and the index value of the current index value of the amount of normal electricity, respectively, included in the accumulated information corresponding to the vehicle ID in the vehicle DB 211 (see Fig. 3).

[0095] Vehicle 50 displays the information transmitted in step S6 (green electricity unit price (purchase price), normal electricity unit price (purchase price), current index value of green electricity amount, and current index value of normal electricity amount) on display 162. Then, the user visually checks the displayed information and inputs the amount of green electricity and the amount of normal electricity that the user desires to charge into display 162. In step S8, vehicle 50 transmits the input amount of normal electricity and the amount of green electricity that the user designated to management server 2.

[0096] Next, the management server 2 calculates a first value by multiplying the amount of green energy transmitted in step S8 by the green energy unit price (purchase price). The management server 2 also calculates a second value by multiplying the amount of normal energy transmitted in step S8 by the normal energy unit price (purchase price). The management server 2 then calculates a total amount by adding up the first value and the second value. In step S10, the management server 2 transmits the total amount to the vehicle 50.

[0097] When the vehicle 50 receives the total amount, it displays the total amount on the display 162. The user visually checks the total amount, and if the user agrees with the total amount, performs a confirmation operation on the input device 161. The confirmation operation is, for example, operating a confirmation button displayed on the display 162. Note that if the user does not agree with the total amount and performs an operation to indicate that they do not agree, the processing in FIG. 10 ends.

[0098] If the user performs a confirmation operation, in step S12, the vehicle 50 transmits a confirmation signal to the management server 2. Upon receiving the confirmation signal, the management server 2 calculates the total amount of energy to be charged and transmits the calculated total amount of energy to the EVSE 40 in step S14. The total amount of energy is the sum of the amount of normal energy and the amount of green energy transmitted in step S8. The transmission of the total amount of energy to the EVSE 40 is based on the EVSEID transmitted from the vehicle 50 in step S4.

[0099] The EVSE 40 can recognize the total amount of power to be charged to the vehicle 50 by receiving the total amount of power from the management server 2. In step S16, the EVSE 40 waits until charging of the recognized total amount of power is completed (NO in step S16).

[0100] In step S16, when charging of the recognized total amount of power has been completed (YES in step S16), in step S18, the EVSE 40 generates and transmits first information 171 (see FIG. 4). Here, as described above, the first information 171 is information that indicates the amount of normal power and the amount of green power specified by the user in step S8. The first condition described above is a condition that YES is determined in step S16.

[0101] Next, in step S20, the management server 2 updates the stored information 170 corresponding to the vehicle ID in the vehicle DB 211 based on the first information 171. This vehicle ID is the vehicle ID transmitted in step S4. This completes the processing in FIG. 10.

[0102] 11 is a flowchart showing the main process flow of the discharge process from the battery 130 of the vehicle 50. In step S42, the vehicle 50 acquires the EVSEID of the EVSE 40 from the connected EVSE 40. Next, in step S44, the vehicle 50 transmits discharge request information, the vehicle ID of the vehicle 50, and the EVSEID to the management server 2. The discharge request information is information for requesting discharge from the battery 130 of the vehicle 50. The EVSEID is the information acquired in step S42.

[0103] Next, in step S46, the management server 2 transmits the green electricity unit price (selling price), the normal electricity unit price (selling price), the index value of the current amount of green electricity, and the index value of the current amount of normal electricity to the vehicle 50. The green electricity unit price (selling price) corresponds to the green electricity unit price 213 shown in Fig. 1, and the normal electricity unit price (selling price) corresponds to the normal electricity unit price 214 shown in Fig. 1.

[0104] The vehicle 50 displays the information transmitted in step S46 (the green electricity unit price (selling price), the normal electricity unit price (selling price), the index value of the current amount of green electricity, and the index value of the current amount of normal electricity) on the display 162. The user then visually checks the displayed information and inputs into the display 162 the amount of green electricity and the amount of normal electricity that the user desires to discharge. The amount of green electricity and the amount of normal electricity that can be input are the index values ​​of the current amount of green electricity and the index values ​​of the current amount of normal electricity transmitted in step S46. In step S48, the vehicle 50 transmits the input amount of normal electricity and the amount of green electricity that have been input (specified by the user) to the management server 2.

[0105] Next, the management server 2 calculates a third value by multiplying the amount of green energy transmitted in step S48 by the green energy unit price (selling price). The management server 2 also calculates a fourth value by multiplying the amount of normal energy transmitted in step S48 by the normal energy unit price (selling price). The management server 2 then calculates a total amount by adding up the third value and the fourth value. In step S50, the management server 2 transmits the total amount to the vehicle 50.

[0106] When the vehicle 50 receives the total amount, it displays the total amount on the display 162. The user visually checks the total amount, and if the user agrees with the total amount, performs a confirmation operation on the input device 161. The confirmation operation is, for example, operating a confirmation button displayed on the display 162. Note that if the user does not agree with the total amount and performs an operation to indicate that they do not agree, the processing in FIG. 11 ends.

[0107] If the user performs a confirmation operation, in step S52, the vehicle 50 transmits a confirmation signal to the management server 2. Upon receiving the confirmation signal, the management server 2 calculates the total amount of power to be discharged and transmits the calculated total amount of power to the EVSE 40 in step S54. The total amount of power is the sum of the amount of normal power and the amount of green power transmitted in step S8. The transmission of the total amount of power to the EVSE 40 is based on the EVSEID transmitted from the vehicle 50 in step S54.

[0108] By receiving the total amount of power from management server 2, EVSE 40 can recognize the total amount of power discharged from vehicle 50. In step S56, EVSE 40 waits until the discharge of the recognized total amount of power is completed (NO in step S56).

[0109] In step S56, if the discharge of the recognized total amount of power has been completed (YES in step S56), in step S58, EVSE 40 generates and transmits second information 172 (see FIG. 4). Here, as described above, second information 172 is information that indicates the amount of normal power and the amount of green power specified by the user in step S48. The second condition described above is a condition that YES is determined in step S56.

[0110] Next, in step S60, the management server 2 updates the stored information 170 corresponding to the vehicle ID in the vehicle DB 211 based on the second information 172. This vehicle ID is the vehicle ID transmitted in step S44. This completes the processing in FIG. 11.

[0111] 12 is a flowchart showing another process between the vehicle 50 and the management server 2. The process in FIG. 12 is executed at predetermined intervals (for example, every second). The process in FIG. 12 is executed in parallel with the process of the arithmetic device 500 shown in FIGS. 10 and 11.

[0112] First, in step S102, the vehicle 50 determines whether or not driving of the vehicle 50 has started. If the vehicle 50 determines that driving of the vehicle 50 has started (YES in step S102), the process proceeds to step S104, and if the vehicle 50 determines that driving of the vehicle 50 has not started (NO in step S102), the process proceeds to step S110.

[0113] In step S104, the vehicle 50 transmits the vehicle ID and the amount of power consumption to the management server 2. The amount of power consumption is the amount of power consumption due to self-discharge described with reference to FIG.

[0114] In step S106, upon receiving the vehicle ID and the power consumption, the management server 2 updates the accumulated information 170 corresponding to the vehicle ID in the vehicle DB 211 based on the power consumption. As described above, the management server 2 updates the accumulated information 170 by assuming that only normal power has been consumed.

[0115] Furthermore, in step S110, the vehicle 50 determines whether or not the driving of the vehicle 50 has ended. If the vehicle 50 determines that the driving of the vehicle 50 has ended (YES in step S110), the process proceeds to step S114, and if the vehicle 50 determines that the driving of the vehicle 50 has not ended (NO in step S110), the process in FIG. 12 ends.

[0116] In step S114, the vehicle 50 transmits the vehicle ID and the amount of power consumption to the management server 2. The amount of power consumption is the amount of power consumption due to driving of the vehicle 50 described with reference to FIG.

[0117] In step S116, upon receiving the vehicle ID and the power consumption, the management server 2 updates the accumulated information 170 corresponding to the vehicle ID in the vehicle DB 211 based on the power consumption. As described above, the management server 2 updates the accumulated information 170 based on the power consumption amount and the third information 173.

[0118] [others] (1) In the above embodiment, the "index value of the amount of green energy" is a value indicating the amount of green energy itself, and the "index value of the amount of normal energy" is a value indicating the amount of normal energy itself. However, the "index value of the amount of green energy" and the "index value of the amount of normal energy" may be any values ​​as long as they are index values ​​indicating these amounts of energy.

[0119] For example, the "index value of the amount of green energy" may be the "ratio of the amount of green energy to the remaining amount of energy." Also, the "index value of the amount of normal energy" may be the "ratio of the amount of normal energy to the remaining amount of energy."

[0120] The "index value of the amount of green energy" may be the "SOC of the amount of green energy." The "index value of the amount of normal energy" may be the "SOC of the amount of normal energy."

[0121] (2) In the above embodiment, the arithmetic device 500 is described as being provided in the management server 2. However, the arithmetic device 500 may be provided in the vehicle 50. In such a configuration, if the first to fourth conditions are met, the vehicle 50 acquires the accumulated information 170 of the vehicle from the management server 2. The vehicle 50 then updates the accumulated information 170 and transmits the updated accumulated information 170 to the management server 2. Even with a arithmetic device 500 having such a configuration, the same effects as those of the above embodiment can be achieved.

[0122] (3) In the above-described FIG. 10, a configuration is described in which charging is performed for the normal energy amount and green energy amount specified by the user (see step S8). However, the management server 2 may also determine whether charging for the normal energy amount and green energy amount specified by the user is possible. The management server 2 makes this determination, for example, based on the normal energy amount and green energy amount circulating in the management system 300 and the charging status of other vehicles 50. For example, if the green energy amount is depleted, the calculation device 500 determines the amount of green energy to be charged that is less than the amount of green energy specified by the user. Then, the first information 171 specifies the amount of green energy to be charged determined by the calculation device 500 (the amount of green energy less than the amount of green energy specified by the user).

[0123] (4) In the above-described Fig. 10, the EVSE 40 is configured to charge the vehicle 50 with the total amount of power transmitted in step S14. However, there are cases where charging ends during charging in step S16. This may be the case, for example, due to a malfunction of the charging equipment (e.g., connector 43, etc.).

[0124] In preparation for such a case, the arithmetic device 500 may retain fifth information indicating a breakdown of the charged power (the ratio of green power and the ratio of normal power). If charging ends during charging in step S16, the arithmetic device 500 calculates the green power and normal power actually charged based on the actually charged power and the fifth information. The calculated green power and normal power become first information 171. Then, the arithmetic device 500 updates the accumulated information 170 based on the first information 171.

[0125] 11, the EVSE 40 is configured such that the total amount of electric power transmitted in step S54 is discharged from the vehicle 50. However, there are cases where the discharge ends during the discharge in step S56. This case may occur, for example, due to a malfunction of the discharge device (such as the connector 43).

[0126] In preparation for such a case, the arithmetic device 500 may retain sixth information indicating a breakdown of the discharged power (the ratio of green power and the ratio of normal power). If the discharge ends during the discharge in step S56, the arithmetic device 500 calculates the actually discharged green power and normal power based on the actually discharged power and the sixth information. The calculated green power and normal power become second information 172. The arithmetic device 500 then updates the accumulated information 170 based on the second information 172.

[0127] (5) In the present embodiment, the green power ratio D3 (%) and the normal power ratio E3 (%) in the third information 173 are fixed values. However, the green power ratio D3 (%) and the normal power ratio E3 (%) may be values ​​designated by the user.

[0128] FIG. 13 is a diagram showing an example of an input screen for a user to specify the ratio D3. The screen of FIG. 13 is displayed by a user performing a predetermined operation on the input device 161. The input screen of FIG. 13 is displayed in the display area of ​​the display 162. In the example of FIG. 13, a message saying "Please enter the green power consumption ratio of the power consumption for driving the vehicle" and an input area 162A are displayed. The user uses the input device 161 to input the desired ratio D3 (%) in the input area 162A. The vehicle 50 transmits the input ratio D3 (%) to the management server 2. The arithmetic device 500 of the management server 2 updates the ratio D3 (%) in the stored third information 173 to the ratio D3 (%) from the vehicle 50. The normal power ratio E3 (%) is calculated by subtracting the ratio D3 (%) input by the user. With this configuration, the arithmetic device 500 can update the accumulated information 170 based on the third information 173 that reflects the green power ratio D3 (%) specified by the user.

[0129] (6) In the present embodiment, the breakdown (ratio) of power consumption when the fourth condition is met is stipulated as follows: the green power ratio is 0% and the normal power ratio is 100%. However, the green power ratio of power consumption when the fourth condition is met may be another value. For example, when the fourth condition is met, the update unit 504 of the calculation device 500 uses the fourth information 174 indicated by the dashed line in FIG. 4. The fourth information 174 is information used to calculate the green power consumed from when the vehicle 50 stops driving to when the vehicle 50 starts driving. In this modified example, the fourth information 174 stipulates the green power ratio D4 (%) and the normal power ratio E4 (%), where D4 + E4 = 100 (%).

[0130] In such a case, since the power consumption is N (kWh) (see Figure 8), the update unit 504 determines, based on the breakdown of the fourth information 174, that the power consumption of green electricity is "N x (D4) / 100" (kWh), and that the power consumption of normal electricity is "N x (E4) / 100" (kWh).

[0131] That is, the update unit 504 updates the amount of green energy in the accumulated information 170 from "A (kWh)" to "A-{N×(D3) / 100}(kWh)". The update unit 504 also updates the amount of normal energy in the accumulated information 170 from "B (kWh)" to "B-{N×(E3) / 100}(kWh)". With this configuration, the calculation device 500 can update the accumulated information based on the amount of energy consumed from when the vehicle 50 starts to drive until when the vehicle 50 stops to drive.

[0132] The green power ratio D4 (%) and the normal power ratio E4 (%) may be fixed values, or may be values ​​specified by the user.

[0133] FIG. 14 is a diagram showing an example of an input screen for specifying the ratio D4. The screen of FIG. 14 is displayed by a user performing a predetermined operation on the input device 161. The input screen of FIG. 14 is displayed in the display area of ​​the display 162. In the example of FIG. 14, a message saying "Please enter the green power consumption ratio of the power consumption due to self-discharge" and an input area 162A are displayed. The user uses the input device 161 to input the desired ratio D4 (%) in the input area 162A. The vehicle 50 transmits the input ratio D4 (%) to the management server 2. The arithmetic device 500 of the management server 2 updates the ratio D4 (%) in the stored fourth information 174 to the ratio D4 (%) from the vehicle 50. The normal power ratio E4 (%) is calculated by subtracting the ratio D4 (%) input by the user. With this configuration, the arithmetic device 500 can update the accumulated information 170 based on the fourth information 174 that reflects the green power ratio D4 (%) specified by the user.

[0134] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not by the description of the above embodiments, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0135] 2 Management server, 40 EVSE, 41 Control unit, 42 Charging cable, 43 Connector, 44 Power supply circuit, 50 Vehicle, 110 Inlet, 120 Charger / discharger, 130 Battery, 140 Driving unit, 151 Processor, 152 RAM, 154 Timer, 161 Input device, 162 Display, 170 Accumulated information, 171 First information, 172 Second information, 173 Third information, 176 Power consumption, 180 Communication equipment, 201 Solar power generation, 202 Hydroelectric power generation, 203 Wind power generation, 204 Geothermal power generation, 205 Thermal power generation, 213 Green power unit price, 214 Normal power unit price, 251 Control device, 253 Communication device, 300 Management system, 500 Arithmetic unit, 502 Acquisition unit, 504 Update unit, 506 Memory unit.

Claims

1. A computing device for a battery that stores power including first power obtained from renewable energy and second power different from the first power, The battery is mounted on a vehicle, The computing device a memory that stores accumulated information including a first index value of the amount of electric energy of the first electric power and a second index value of the amount of electric energy of the second electric power that are accumulated in the battery; a controller for controlling the memory, The controller when the battery is charged by a power device provided outside the vehicle, acquiring first information that is generated based on a user's designation and indicates a first increase amount of the first power and a second increase amount of the second power, and updating the accumulated information based on the first information so as to increase the first index value by the first increase amount and to increase the second index value by the second increase amount; A computing device that, when the battery is discharged to the power device, acquires second information generated based on a user's specification, indicating a first decrease in the first power and a second decrease in the second power, and updates the accumulated information based on the second information so as to decrease the first index value by the first decrease amount and decrease the second index value by the second decrease amount.

2. the memory stores third information used to calculate the first electric power consumed from when the vehicle starts to be driven to when the vehicle stops to be driven; The computing device according to claim 1 , wherein the controller updates the stored information based on the third information when the driving of the vehicle is stopped.

3. the third information specifies a ratio of the first power to power consumed from when the vehicle starts to be driven to when the vehicle stops to the first power consumed; The computing device according to claim 2 , wherein the ratio of the first power in the third information is specified by a user.

4. the memory stores fourth information used to calculate the first electric power consumed from when driving of the vehicle stops to when driving of the vehicle starts; 3. The computing device according to claim 1, wherein the controller updates the stored information based on the fourth information when the vehicle starts to be driven.

5. the fourth information specifies a ratio of the first power to power consumed from when driving of the vehicle stops to when driving of the vehicle starts, The computing device according to claim 4 , wherein the ratio of the first power in the fourth information is specified by a user.

6. the fourth information specifies a ratio of the first power to power consumed from when driving of the vehicle stops to when driving of the vehicle starts, The computing device according to claim 4 , wherein the ratio of the first power in the fourth information is 0%.

7. 3. The computing device according to claim 1, wherein the computing device notifies a user of the vehicle of the updated stored information.

8. A vehicle comprising the computing device according to claim 1 or 2.

9. A management server that manages the vehicle, The computing device according to claim 1 or 2 is provided, The memory stores the accumulated information of the vehicle for each vehicle identification information of the vehicle.

10. A calculation method for a battery that stores power including first power obtained from renewable energy and second power different from the first power, The battery is mounted on a vehicle, The calculation method includes: updating stored information including a first index value of the amount of electric energy of the first power and a second index value of the amount of electric energy of the second power stored in the battery; Updating the stored information includes: when the battery is charged by a power device provided outside the vehicle, acquiring first information that is generated based on a user's specification and indicates a first increase amount of the first power and a second increase amount of the second power, and updating the accumulated information based on the first information so as to increase the first index value by the first increase amount and to increase the second index value by the second increase amount; A calculation method including: when the battery is discharged to the power device, acquiring second information that indicates a first decrease amount of the first power and a second decrease amount of the second power, which is generated based on a user's specification; and updating the accumulated information based on the second information so as to decrease the first index value by the first decrease amount and decrease the second index value by the second decrease amount.

Images