Server

Abstract

To provide a server capable of preventing electrical energy transmitted from an electric vehicle from not reaching a contract volume of demand response.SOLUTION: A server 100 comprises a communication unit 103 (acquisition unit) for acquiring temperature information of a battery 11 of an electric vehicle 10, and a processor 101. At least on the basis of the temperature information, the processor 101 predicts a temperature trend of the battery 11 during a response period in which it is possible to respond to an electricity demand and supply adjustment request from a power grid PG (power network). On the basis of the temperature trend, the processor 101 estimates a time zone in which a temperature of the battery 11 falls within a range of non-restricted temperature zone (a temperature zone within which electricity transmission is restricted) within the response period. On the basis of the estimated time zone, the processor 101 sets a time zone in which the electric vehicle 10 performs electricity transmission in response to the electricity demand and supply adjustment request.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a server. [Background technology]

[0002] JP 2021-158838 A (Patent Document 1) discloses a vehicle that charges or discharges in response to demand response in a power grid network. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-158838 Summary of the Invention [Problem to be solved by the invention]

[0004] Here, there is a temperature range of the battery that is suitable for charging and discharging the vehicle. If the temperature of the battery is outside this temperature range, the charging power and discharging power of the vehicle may be limited. If the vehicle responds to a demand response (a request for adjusting the supply and demand of power based on the amount of power in the power grid) in a state where the charging power and discharging power are limited, the amount of charging power or discharging power (amount of transmission power) may not reach the contracted amount of the demand response.

[0005] The present disclosure has been made to solve the above-mentioned problems, and has as its purpose to provide a server capable of preventing the amount of transmitted power from an electric vehicle from not reaching the contracted amount for demand response. [Means for solving the problem]

[0006] A server according to one aspect of the present disclosure is a server that manages power transmission by at least one electric vehicle capable of power transmission including at least one of charging from a power grid and discharging to the power grid, and includes an acquisition unit that acquires temperature information of a battery of the at least one electric vehicle, and a processor. When the temperature of the battery of the at least one electric vehicle is within a non-restricted temperature range, the transmission power of the at least one electric vehicle in the power transmission is not restricted. Based on the temperature information of the at least one electric vehicle, the processor predicts a temperature transition of the battery during a response period during which the vehicle can respond to a power supply and demand adjustment request from the power grid, and estimates a time period during the response period during which the temperature of the battery is within the non-restricted temperature range based on the temperature transition. Based on the estimated time period, the processor sets a time period during which the at least one electric vehicle performs power transmission in response to the power supply and demand adjustment request.

[0007] In the server according to one aspect of the present disclosure, as described above, a time period during which power transmission in response to a power supply and demand adjustment request is performed is set based on a time period during which the temperature of the battery is within the non-restricted temperature range. This allows power transmission to be performed during a time period during which the transmission power of the battery is not restricted. As a result, it is possible to prevent the amount of transmission power from the electric vehicle from not reaching the contract amount of the demand response.

[0008] In the server according to the above aspect, the processor preferably predicts a temperature transition of the battery based on at least one of a distance between a current location of the at least one electric vehicle and a destination to which power transfer is to be performed, a temperature transition between the current location and the destination, and a temperature transition at the destination. With this configuration, the temperature transition of the battery can be easily estimated using information on the travel distance of the electric vehicle based on the distance and the temperature transition.

[0009] In the server according to the above aspect, the processor preferably performs control to transmit a battery temperature adjustment command to the at least one electric vehicle when the amount of transmitted power by the power transmission of the at least one electric vehicle does not reach the contract amount of the power supply and demand adjustment request and when the transmitted power of the at least one electric vehicle is limited during at least a part of the response period. With this configuration, the degree to which the transmitted power is limited can be improved (the time during which the transmission power is limited can be shortened) by adjusting the battery temperature. As a result, the transmitted power amount can be easily increased to or above the contract amount.

[0010] In this case, preferably, the at least one electric vehicle includes a plurality of electric vehicles with transmission power restrictions. The further the battery temperature of each of the plurality of electric vehicles is from the non-restricted temperature zone, the greater the amount of restriction on transmission power. The processor performs control to preferentially transmit a temperature adjustment command to an electric vehicle with a smaller amount of restriction on transmission power among the plurality of electric vehicles. With this configuration, the temperature adjustment command is preferentially transmitted to an electric vehicle with a smaller amount of restriction on transmission power, so that the amount of temperature adjustment based on the temperature adjustment command can be made relatively small.

[0011] In the server that transmits the temperature adjustment command to the electric vehicle, preferably, the at least one electric vehicle includes a plurality of electric vehicles with limited transmission power. The processor performs control to transmit the temperature adjustment command preferentially to an electric vehicle having a battery with a low degree of degradation among the plurality of electric vehicles. With this configuration, it is possible to prevent the temperature adjustment command from being transmitted to an electric vehicle having a battery with a relatively high degree of degradation. As a result, it is possible to prevent further deterioration of the battery in an electric vehicle having a relatively high degree of degradation. Effect of the Invention

[0012] According to the present disclosure, it is possible to prevent the amount of transmitted power from an electric vehicle from not reaching the contracted amount of demand response. [Brief description of the drawings]

[0013] [Figure 1] FIG. 1 is a diagram illustrating a configuration of a system according to an embodiment. [Diagram 2] FIG. 11 is a diagram showing the relationship between the upper limit of transmission power and the temperature of the battery. [Diagram 3] FIG. 1 is a first diagram showing an example of a relationship between a battery temperature and time. [Figure 4] FIG. 2 is a second diagram showing an example of the relationship between the battery temperature and time. [Diagram 5] FIG. 2 is a diagram showing a system sequence according to one embodiment. [Figure 6] FIG. 7 is a diagram showing a modified example of step S12 in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0014] 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 characters and the description thereof will not be repeated.

[0015] Fig. 1 is a diagram showing the configuration of a system 1 according to this embodiment. The system 1 includes a server 100, a power system management server 200, a power system PG, a plurality of electrically powered vehicles 10, and an EVSE (Electric Vehicle Supply Equipment) 20. Note that while only one EVSE 20 is illustrated in Fig. 1, a plurality of EVSEs 20 may be provided. Furthermore, the power system PG is an example of the "power grid" of the present disclosure.

[0016] The power system PG is a power grid constructed by a power plant and a power transmission and distribution facility (not shown). In this embodiment, an electric power company serves as both a power generation business operator and a power transmission and distribution business operator. The electric power company corresponds to a general power transmission and distribution business operator, and maintains and manages the power system PG. The electric power company corresponds to a manager of the power system PG.

[0017] The power system management server 200 manages the power supply and demand in the power system PG (power grid). The power system management server 200 belongs to a power company. The power system management server 200 transmits a request (power supply and demand adjustment request) to the server 100 to adjust the power demand of the power system PG based on the power generated and consumed by each power adjustment resource managed by the power system management server 200.

[0018] The server 100 is a server managed by an aggregator. The aggregator is an electric utility that provides an energy management service by bundling multiple power adjustment resources in a region, a specific facility, etc. The server 100 manages the power transmission (described later) of each of the multiple electric vehicles 10.

[0019] The server 100 requests the electric vehicle 10 to perform "power transmission" as one means for increasing or decreasing the power demand of the power system PG. Power transmission is a control including power supply to the power system PG (external power supply / external discharging) and charging from the power system PG (external charging). The server 100 transmits a request signal requesting power transmission to the electric vehicle 10 or a mobile terminal (not shown) owned by the user of the electric vehicle 10. Note that the electric vehicle 10 may be configured to be capable of only one of external power supply and external charging.

[0020] The request for power transmission includes information on a time period during which power transmission is requested (a response period during which a response can be made to a power supply and demand adjustment request) and information on the requested amount of charge (discharge) (contract amount) within the time period. In response to the request, the user of each electric vehicle 10 replies to the server 100 with their intention to respond to the power supply and demand adjustment request (demand response) and, if they respond, with information on the amount of power they can charge (discharge). The user may also transmit information on a time period during the time period (response period) during which they can respond to the request. In this specification, it is assumed that all electric vehicles 10 that respond to a power supply and demand adjustment request are able to respond to a power supply and demand adjustment request at any time during the time period.

[0021] Power transmission is performed between the electrically powered vehicle 10 and the power grid PG via the EVSE 20. The electrically powered vehicle 10 includes, for example, a plug-in hybrid electric vehicle (PHEV), a battery electric vehicle (BEV), and a fuel cell electric vehicle (FCEV).

[0022] The electric vehicle 10 includes a battery 11 and a temperature sensor 12. The battery 11 is charged or discharged by power transmission. The temperature sensor 12 detects the temperature of the battery 11. The temperature sensor 12 may detect any of the ambient temperature around the battery 11, the temperature of a case (not shown) of the battery 11, or the temperature of the cells of the battery 11 themselves.

[0023] The EVSE 20 refers to a power supply facility for vehicles. The electric vehicle 10 is configured to be electrically connectable to the EVSE 20. For example, a charging cable 21 connected to the EVSE 20 is connected to an inlet of the electric vehicle 10, thereby enabling power to be exchanged between the EVSE 20 and the electric vehicle 10.

[0024] Server 100 is also configured to manage information on registered electric vehicles 10 (hereinafter also referred to as "vehicle information"), information on each registered user (hereinafter also referred to as "user information"), and information on registered EVSEs 20 (hereinafter also referred to as "EVSE information"). The user information, vehicle information, and EVSE information are distinguished by identification information (ID) and stored in memory 102, which will be described later.

[0025] The user ID is identification information for identifying a user, and also functions as information (terminal ID) for identifying the portable terminal 30 carried by the user. The server 100 is configured to store information received from the portable terminal 30 by distinguishing it for each user ID. The user information includes the communication address of the portable terminal (not shown) carried by the user, and the vehicle ID of the electric vehicle 10 belonging to the user.

[0026] The vehicle ID is identification information for identifying the electric vehicle 10. The vehicle ID may be a license plate or a vehicle identification number (VIN). The vehicle information includes a travel schedule of each electric vehicle 10.

[0027] The EVSE-ID is identification information for identifying the EVSE 20. The EVSE information includes the communication address of each EVSE 20 and the state of the electric vehicle 10 connected to each EVSE 20. The EVSE information also includes information indicating the combination of the electric vehicle 10 and the EVSE 20 that are connected to each other (for example, a combination of the EVSE-ID and a vehicle ID).

[0028] The server 100 includes a processor 101, a memory 102, and a communication unit 103. Note that the communication unit 103 is an example of the "acquisition unit" of the present disclosure.

[0029] The memory 102 stores the programs executed by the processor 101 as well as information used by the programs (e.g., maps, formulas, and various parameters). The communication unit 103 includes various communication I / Fs. The processor 101 controls the communication unit 103. The communication unit 103 communicates with at least one of the electric vehicle 10, the EVSE 20, and a user's mobile terminal (not shown).

[0030] The communication unit 103 acquires information regarding power transmission between the electrically powered vehicle 10 and the EVSE 20. Specifically, the communication unit 103 acquires information such as the charge / discharge amount, the charge / discharge time, and the time period during which the charge / discharge was performed between the electrically powered vehicle 10 and the EVSE 20 where the power transmission was performed.

[0031] The communication unit 103 acquires the user's position information, speed information, and the like based on information from a GPS module (not shown) of the electric vehicle 10. The communication unit 103 also receives temperature information of the battery 11 detected by the temperature sensor 12 from the electric vehicle 10.

[0032] The communication unit 103 receives temperature information, weather information, traffic information, and the like via the Internet 300. Note that this information may include forecasts (future information).

[0033] Fig. 2 is a diagram showing the relationship between the upper limit of the transmission power of the electric vehicle 10 and the temperature of the battery 11. The transmission power may be either AC power or DC power. When the transmission power is AC power, the vertical axis of Fig. 2 represents the amplitude of the AC power.

[0034] As shown in FIG. 2, when the temperature of battery 11 is within a temperature range of 10° C. to 30° C. (hereinafter referred to as the non-restricted temperature range), the upper limit value of the transmission power is not restricted (does not decrease). On the other hand, the further the temperature of battery 11 is from the non-restricted temperature range, the more restricted (decreased) the upper limit value of the transmission power is. Note that in a temperature range where the temperature of battery 11 is a certain amount or more (for example, 25° C. or more) away from the non-restricted temperature range, the upper limit value of the transmission power may be constant. Note that the non-restricted temperature range is a temperature range suitable for charging and discharging battery 11. The range of the non-restricted temperature range is not limited to the above example.

[0035] Here, when an electric vehicle responds to a power supply and demand adjustment request (demand response) while the transmission power is restricted, the amount of power transmitted between the electric vehicle and the power grid may not reach the contracted amount of the power supply and demand adjustment request (the amount of power requested based on the power supply and demand adjustment request).

[0036] Therefore, in this embodiment, the processor 101 estimates a time period during which the temperature of the battery 11 falls within the non-restricted temperature zone during the response period of the power supply and demand adjustment request, based on the temperature transition of the battery 11 (see FIGS. 3 and 4). Then, the processor 101 sets a time period during which the electrically powered vehicle 10 transmits power in response to the power supply and demand adjustment request, based on the estimated time period.

[0037] FIG. 3 shows an example of a case where power transmission is performed after the electric vehicle 10 runs in a cold region or the like where the temperature is low. In the example shown in FIG. 3, the transition of the temperature of the battery 11 from the past to the present is indicated by a solid line, and the predicted value of the temperature of the battery 11 is indicated by a dashed line. The temperature of the battery 11 rises as the electric vehicle 10 runs. As shown in FIG. 3, in a period T1 in the first half of the response period, the temperature (predicted value) of the battery 11 is within the non-restricted temperature zone. In this case, the period during which the electric vehicle 10 performs power transmission is set to the period T1. Note that, although an example in which the temperature transition of the battery 11 is predicted a predetermined time before the response period has been shown above, the temperature transition of the battery 11 may be predicted immediately before (at the beginning of) the response period.

[0038] Fig. 4 shows an example of a case where electric vehicle 10 performs power transmission after waiting for a predetermined period in a high temperature region or the like. In the example shown in Fig. 4, the change in temperature of battery 11 from the past to the present is shown by a solid line, and the predicted value of the temperature of battery 11 is shown by a dashed line. The temperature of battery 11 gradually increases due to high outside air temperature. For example, as shown in Fig. 4, it is assumed that the temperature of battery 11 is within the non-restricted temperature zone in period T2 in the latter half of the response period. In this case, the period during which electric vehicle 10 performs power transmission is set to period T2.

[0039] The processor 101 predicts a temperature transition of the battery 11 based on predetermined information. The predetermined information includes temperature information of the battery 11 detected by the temperature sensor 12 (current temperature).

[0040] Furthermore, when the electric vehicle 10 travels before the power transmission is performed, the predetermined information may include the distance (i.e., the travel distance) between the current location and the destination (the location of the EVSE 20 that performs the power transmission). This makes it possible to predict the amount of heat generated by the battery 11 due to the traveling of the electric vehicle 10.

[0041] The predetermined information may include information on temperature transition in the section between the current location and the destination. The temperature transition includes at least one of the temperature transition from the past to the present in the section and a predicted value of the temperature transition. This makes it possible to predict the amount of heat that the battery 11 receives from the outside air while the electric vehicle 10 travels to the destination.

[0042] The predetermined information may include information on temperature transition at the destination. The temperature transition includes at least one of the temperature transition from the past to the present at the destination and a predicted value of the temperature transition. This makes it possible to predict the amount of heat that the battery 11 receives from the outside air while the electric vehicle 10 is staying at the destination (while waiting or transmitting power).

[0043] The predetermined information may also include information on the temperature transition of the battery 11 from the past to the present. This makes it possible to predict the temperature transition of the battery 11 based on the temperature transition of the battery 11 from the past to the present. The predetermined information may also include information on the planned behavior of the electric vehicle 10 (for example, operating the heating or cooling during a predetermined time period). This makes it possible to predict the amount of heat generated by the battery 11 due to the planned behavior of the electric vehicle 10.

[0044] The predetermined information may include vehicle speed information of the electric vehicle 10 and traffic information (traffic jam information) to the destination. This makes it possible to predict the amount of heat generated by the battery 11 based on the time required to reach the destination, etc.

[0045] When predicting the temperature transition of the battery 11 based on the above-mentioned predetermined information, the processor 101 may use, for example, a trained model generated by a machine learning technique such as deep learning.

[0046] (System sequence) 5 is a diagram showing sequence control by the system 1. In step S1, the grid management server 200 transmits a power supply and demand adjustment request to the server 100. In step S2, the server 100 transmits, to each of the multiple electrically powered vehicles 10, a request for power transmission based on the power supply and demand adjustment request in step S1.

[0047] Electrically powered vehicle 10 that accepts the request in step S2 transmits the information in steps S3 to S5 to server 100. Note that the order in which the information in steps S3 to S5 is transmitted to server 100 is not limited to the example in FIG.

[0048] In step S3, the electric vehicle 10 transmits information about the temperature of the battery 11 to the server 100. The information about the temperature of the battery 11 includes, for example, information about the current temperature of the battery 11 and information about the temperature transition of the battery 11 from the past to the present.

[0049] In step S4, the electric vehicle 10 transmits to the server 100 its own position information (current location information) based on a GPS module or the like (not shown).

[0050] In step S5, the electric vehicle 10 transmits information on the location (destination) where power transmission is to be performed in response to the power supply and demand adjustment request to the server 100. Note that the information in step S5 may be registered in the server 100 (memory 102) as base point information from which the electric vehicle 10 performs power transmission.

[0051] In step S6, the server 100 (processor 101) calculates the distance between the current location of the electric vehicle 10 and the destination of step S5. The server 100 (communication unit 103) also acquires information on temperature trends (e.g., temperature trends in the last hour) in the section between the current location and the destination, for example, via the Internet 300 or the like.

[0052] In step S7, the server 100 (communication unit 103) acquires information on the temperature transition at the destination (for example, the temperature transition in the last hour) via, for example, the Internet 300 or the like.

[0053] In step S8, the server 100 predicts the temperature transition of the battery 11 based on the temperature information of step S3, the distance information calculated in step S6, and the temperature transition information acquired in steps S6 and S7. Note that, in predicting the temperature transition of the battery 11, information on the storable capacity of the battery 11, the type of the battery 11, etc. may be used.

[0054] In step S9, the server 100 calculates a time period during which the temperature of the battery 11 will be within the non-restricted temperature zone based on the temperature transition of the battery 11 predicted in step S8. Then, the server 100 sets the calculated time period as a time period during which the electrically powered vehicle 10 will transmit power in response to a power supply and demand adjustment request.

[0055] In step S10, the server 100 determines whether or not the estimated value of the total amount of transmitted power (the total amount of transmitted power by the multiple electric vehicles 10) is smaller than the contract amount of the power supply and demand adjustment request, based on the information on the time period of power transmission of each of the multiple electric vehicles 10 set in step S9. If the total amount of transmitted power is smaller than the contract amount (Yes in S10), the process proceeds to step S11. If the total amount of transmitted power is equal to or larger than the contract amount (No in S10), the process proceeds to step S14.

[0056] In step S11, the server 100 extracts electric vehicles 10 in which the temperature of the battery 11 falls within the restricted temperature zone (a temperature zone other than the non-restricted temperature zone) even during at least a part of the response period.

[0057] In step S12, the server 100 transmits a battery temperature adjustment command preferentially to the electric vehicles 10 with the smallest limit amount of the transmission power among the electric vehicles 10 extracted in step S11. Specifically, the server 100 transmits a battery temperature adjustment command to the top N electric vehicles 10 with the smallest limit amounts. Note that the above N and each of the temperature adjustment amounts of the battery 11 may be calculated by the server 100 as a value required to satisfy the judgment condition in step S10 (judgment is No), or may be a fixed value. Next, the process returns to step S8. Note that the limit amount of the transmission power may be, for example, an average value of the limit amount during the time when the temperature of the battery 11 is in the restricted temperature range.

[0058] In step S13, the electric vehicle 10 determines whether or not a battery temperature adjustment command corresponding to step S12 has been received. If a battery temperature adjustment command has been received (Yes in S13), the process proceeds to step S14.

[0059] In step S14, the electric vehicle 10 executes temperature adjustment based on the battery temperature adjustment command received in step S13. For example, the electric vehicle 10 may increase or cool the temperature of the battery 11 by switching the flow path of the heat medium.

[0060] In step S15, the server 100 transmits to each of the electric vehicles 10 a command to execute power transmission.

[0061] In step S16, the electrically powered vehicle 10 determines whether or not a power transmission command has been received from the server 100. If a power transmission command has been received (Yes in S16), the process proceeds to step S17. If a power transmission command has not been received (No in S16), the process returns to step S13. In step S17, the electrically powered vehicle 10 executes power transmission in response to the command in step S15.

[0062] As described above, in this embodiment, the processor 101 estimates a time period during which the temperature of the battery 11 will be within the non-restricted temperature zone during the response period of the power supply and demand adjustment request, based on the predicted temperature transition of the battery 11. The processor 101 sets a time period during which the electric vehicle 10 will transmit power in response to the power supply and demand adjustment request, based on the estimated time period. This makes it possible to prevent power transmission from being performed during a time period during which the transmission power of the battery 11 is restricted. As a result, it is possible to prevent the amount of transmitted power from the electric vehicle from not reaching the contract amount of the power supply and demand adjustment request.

[0063] In the above embodiment, an example has been described in which a battery temperature adjustment command is preferentially transmitted to an electric vehicle 10 having a small limit amount of transmission power, but the present disclosure is not limited to this. For example, step S112 shown in Fig. 6 may be executed instead of step S12 in Fig. 5. In step S112, the server 100 transmits a battery temperature adjustment command preferentially to an electric vehicle 10 having a small degree of deterioration (SOH: State Of Health) of the battery 11 among the electric vehicles 10 extracted in step S11. Specifically, the server 100 transmits a battery temperature adjustment command to the top N electric vehicles 10 having the smallest degree of deterioration.

[0064] In the above embodiment, an example has been shown in which a battery temperature adjustment command is sent to the top N electric vehicles 10 with the smallest limit on transmission power, but the present disclosure is not limited to this. When selecting the top N electric vehicles 10, the power storage capacity of the battery 11 of the electric vehicles 10 may be taken into consideration. For example, a battery temperature adjustment command may be sent to the top N electric vehicles 10 with the smallest limit on transmission power among the electric vehicles 10 with the power storage capacity of the battery 11 equal to or less than a predetermined threshold.

[0065] In the above embodiment, an example has been shown in which a time period during which the temperature of the battery 11 falls within the non-restricted temperature zone of the transmission power is set as a time period during which the power transmission is performed, but the present disclosure is not limited to this. For example, as long as the power transmission is performed during at least a part of the time period during which the temperature of the battery 11 falls within the non-restricted temperature zone, the power transmission may be performed during a time period during which the temperature of the battery 11 falls within the restricted temperature zone (a temperature zone other than the non-restricted temperature zone).

[0066] In the above embodiment, an example was shown in which the temperature transition of the battery 11 was predicted based on the distance between the current location and the destination, the temperature transition between the current location and the destination, and the temperature transition at the destination, but the present disclosure is not limited to this. The temperature transition of the battery 11 may be predicted based on some of the above three elements. Note that none of the above three elements may be used. In this case, the temperature transition of the battery 11 is predicted based only on the temperature information of the battery 11.

[0067] In the above embodiment, an example has been described in which a temperature adjustment instruction for the battery 11 is transmitted to a part of the electric vehicle 10 in which the transmission power is limited, but the present disclosure is not limited to this. Temperature adjustment of the battery 11 does not have to be performed. In this case, the total amount of transmission power may be increased by executing power transmission in at least a part of the time period in which the transmission power is limited (for example, a time period in which the limit amount is smaller than a predetermined threshold value). In other words, the threshold value of the limit amount of transmission power at which the execution of power transmission is restricted may be raised (relaxed).

[0068] The embodiments disclosed herein should be considered to be illustrative and not restrictive in all respects. The scope of the present disclosure is defined by the claims, not by the description of the embodiments described above, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0069] 10 electric vehicle, 11 battery, 100 server, 101 processor, 103 communication unit (acquisition unit), PG power system (power grid).

Claims

1. A server that manages power transmission by at least one electric vehicle capable of power transmission including at least one of charging from a power grid and discharging to the power grid, an acquisition unit that acquires temperature information of a battery of the at least one electric vehicle; a processor; When the temperature of the battery is within a non-restricted temperature zone, the at least one electric vehicle is not restricted in the transmission power in the power transmission, The processor, predicting a temperature transition of the battery during a response period in which the battery can respond to a power supply and demand adjustment request from the power grid based on at least the temperature information; estimating a time period during the response period during which the temperature of the battery is within the non-restricted temperature range based on the temperature transition; A server sets a time period during which the at least one electric vehicle performs the power transmission in response to the power supply and demand adjustment request, based on the estimated time period.

2. 2. The server according to claim 1, wherein the processor predicts the temperature change of the battery based on at least one of a distance between a current location of the at least one electric vehicle and a destination to which the power transfer is to be performed, a change in temperature between the current location and the destination, and a change in temperature at the destination.

3. 3. The server according to claim 1, wherein the processor performs control to transmit a battery temperature adjustment command to the at least one electric vehicle when an amount of transmitted power through the power transmission of the at least one electric vehicle does not reach an agreed amount of the power supply and demand adjustment request and when the transmitted power of the at least one electric vehicle is limited during at least a part of the response period.

4. the at least one electric vehicle includes a plurality of electric vehicles whose transmission power is limited; In each of the plurality of electric vehicles, the amount of restriction on the transmission power increases as the temperature of the battery moves away from the non-restricted temperature zone, The server according to claim 3 , wherein the processor performs control to transmit the temperature adjustment command preferentially to an electric vehicle having a smaller limit amount of the transmission power among the plurality of electric vehicles.

5. the at least one electric vehicle includes a plurality of electric vehicles whose transmission power is limited; The server according to claim 3 , wherein the processor performs control to transmit the temperature adjustment command preferentially to an electric vehicle having a battery with a small degree of degradation among the plurality of electric vehicles.

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