JP6783190B2 - Decision method, decision device and program - Google Patents

Description

The present invention relates to a method for determining charge / discharge timing, a determination device, and a program.

V2G (Vehicle to Grid) is the process of connecting an electric vehicle to an electric power system and exchanging electric power between the battery mounted on the electric vehicle and the electric power system. The electric power company can stabilize the electric power quality of the electric power system by V2G. In addition, the user of the electric vehicle that supplies the battery can get a price according to the supplied electric power. Therefore, it is preferable for the user to participate in V2G at a timing when the electric power unit price (or electric energy unit price) is as high as possible.
In addition, in Patent Document 1, based on the remaining capacity of the battery mounted on the electric vehicle and the predicted value of the electric power charge of the grid power, the battery of the electric vehicle is used while the predicted value of the electric power charge is equal to or less than a predetermined threshold value. There is a description of how to make a plan for charging.

Japanese Patent No. 5506943

By the way, when the battery of an electric vehicle is supplied for stabilizing the power quality of the power system, the battery deteriorates. For example, if power is supplied excessively from an electric vehicle, the deterioration of the battery progresses, the number of times the battery is replaced increases, and the cost may increase. Therefore, in order to consider the merits of the user, it is necessary to consider not only the revenue from selling the electric power supplied from the electric vehicle but also the deterioration of the battery due to the supply. However, it is difficult for the user to calculate the profit from the electricity sales revenue and the cost of battery deterioration by himself / herself to determine the power supply.

Therefore, an object of the present invention is to provide a method, a determination device, and a program for determining charge / discharge timing that can solve the above-mentioned problems.

The first aspect of the present invention is a method of determining the charge / discharge timing to the electric power system by a computer, which includes a step of acquiring information on a transaction price of electric power due to charging / discharging to the electric power system and a step of being mounted on an electric vehicle. A step of acquiring the state of the battery, a step of calculating a reward amount obtained by the user of the electric vehicle by charging / discharging the battery to the power system based on the transaction price information, and a step of calculating the battery. Based on the deterioration characteristics due to use, the step of calculating the decrease in the purchase price of the battery due to charging and discharging from the battery, and the difference between the reward amount and the decrease amount, the user of the electric vehicle When the step of determining the timing of charging / discharging is compared with the purchase price of the battery mounted on the electric vehicle and the cumulative value of the reward amount, and the purchase price of the battery is equal to or less than the cumulative value of the reward amount, It is a determination method including a step of determining the battery replacement timing .

The second aspect of the present invention is a method of determining the charge / discharge timing to the electric power system by a computer, which includes a step of acquiring information on the transaction price of electric power due to the charge / discharge to the electric power system and a step of being mounted on an electric vehicle. A step of acquiring the state of the electric vehicle, a step of calculating a reward amount obtained by the user of the electric vehicle by charging / discharging the electric vehicle from the battery to the electric power system based on the transaction price information, and a step of calculating the amount of the electric vehicle. Based on the deterioration characteristics due to use, the user of the electric vehicle uses the step of calculating the decrease in the purchase price of the battery due to charging / discharging from the battery and the difference between the reward amount and the decrease. A step of determining the timing of charging / discharging, a step of calculating the number of times the battery mounted on the electric vehicle is replaced during the period when the user uses the electric vehicle, and a step of calculating the reward amount during the period when the electric vehicle is used. Based on the total and the cost required to replace the battery, the step of calculating the balance of the user during the period of using the electric vehicle and the operating condition for carrying out the charging / discharging are calculated based on the calculated balance. It is a determination method having steps and.

A third aspect of the present invention is a method of determining the charge / discharge timing of the electric power system by a computer, which includes a step of acquiring information on the transaction price of electric power due to the charge / discharge of the electric power system, and a step of being mounted on an electric vehicle. A step of acquiring the state of the electric vehicle, a step of calculating a reward amount obtained by the user of the electric vehicle by charging / discharging the electric vehicle from the battery to the electric power system based on the transaction price information, and a step of calculating the amount of the electric vehicle. Based on the deterioration characteristics due to use, the user of the electric vehicle uses the step of calculating the decrease in the purchase price of the battery due to charging / discharging from the battery and the difference between the reward amount and the decrease. A step of determining the timing of charging / discharging, a step of notifying the user of the electric vehicle of a solicitation condition for urging the charging / discharging of the electric power system, a step of receiving application information for the notification of the solicitation condition, and the reception. It is a determination method including a step of selecting the electric vehicle to participate in the charging / discharging based on the reward amount from the electric vehicles corresponding to the application information.

A fourth aspect of the present invention is a method of determining the charge / discharge timing of the electric power system by a computer, which includes a step of acquiring information on the transaction price of electric power due to the charge / discharge of the electric power system, and a step of being mounted on an electric vehicle. A step of acquiring the state of the battery, a step of calculating a reward amount obtained by the user of the electric vehicle by charging and discharging the battery to the electric power system based on the transaction price information, and a step of calculating the battery. Based on the deterioration characteristics due to use, the user of the electric vehicle uses the step of calculating the decrease in the purchase price of the battery due to charging / discharging from the battery and the difference between the reward amount and the decrease. The determination method includes a step of determining the timing of charging / discharging and a step of moving the electric vehicle participating in the charging / discharging to a charging spot in which a predetermined charging / discharging device is installed.

According to the fifth aspect of the present invention, in the step of determining the timing of charging / discharging, when the reward amount is larger than the decrease amount by a predetermined value or more, it is determined that the timing of charging / discharging is performed. Further, it has a step of notifying the user of the electric vehicle of the timing of performing the charging / discharging.

According to the sixth aspect of the present invention, in the step of determining the timing of charging / discharging, when the reward amount is larger than the decrease amount by a predetermined value or more, it is determined that the timing of charging / discharging is performed. Further, when the timing of charging / discharging is reached, the step of starting charging / discharging of the battery mounted on the electric vehicle is included.

A seventh aspect of the present invention is a method of determining the charge / discharge timing of an electric power system by a computer, which includes a step of acquiring information on a transaction price of electric power due to the charge / discharge of the electric power system, and a step of being mounted on an electric vehicle. A step of acquiring the state of the battery, a step of calculating a reward amount obtained by the user of the electric vehicle by charging / discharging the electric vehicle from the battery to the electric power system based on the transaction price information, and a step of calculating the reward amount obtained from the battery. The step of calculating the incentive given to the user of the electric vehicle for participating in the service of charging / discharging to the electric power system, and the charge / discharge from the battery based on the deterioration characteristics due to the use of the battery. When the step of calculating the decrease in the purchase price of the battery and the sum of the reward amount and the incentive are larger than the decrease amount by a predetermined value or more, it is determined that it is the timing for the user of the electric vehicle to charge and discharge. It is a determination method having steps and.

Eighth aspect of the present invention is an electric power transaction price information acquisition unit that acquires information on the transaction price of electric power by charging / discharging the electric power system, and a battery state information acquisition unit that acquires the state of a battery mounted on an electric vehicle. Based on the transaction price information, the reward amount calculation unit that calculates the reward amount obtained by the user of the electric vehicle by discharging from the battery, and the battery based on the deterioration characteristics due to the use of the battery. At the timing when the user of the electric vehicle charges and discharges based on the difference between the battery purchase price calculation unit that calculates the decrease in the purchase price of the battery due to the discharge from the electric vehicle and the reduction amount and the compensation amount. possess a charge and discharge timing determining unit that determines that there, the said charging and discharging timing determining unit compares the purchase price of a battery in which the electric vehicle is equipped, and the cumulative value of the remuneration of the battery When the purchase price is equal to or less than the cumulative value of the reward amount, it is a determination device that determines that it is the battery replacement timing .

A ninth aspect of the present invention is to obtain information on the transaction price of electric power by charging and discharging the computer, means for acquiring the state of a battery mounted on an electric vehicle, and information on the transaction price. Based on the means for calculating the reward amount obtained by the user of the electric vehicle by discharging from the battery, the purchase price of the battery is lowered by discharging from the battery based on the deterioration characteristics due to the use of the battery. A means for calculating the amount, a means for determining the timing for the user of the electric vehicle to charge / discharge based on the difference between the reward amount and the decrease amount, the purchase price of the battery mounted on the electric vehicle. This is a program for comparing the battery with the cumulative value of the remuneration amount and functioning as a means for determining that it is the battery replacement timing when the purchase price of the battery is equal to or less than the cumulative value of the remuneration amount .

According to the present invention, it is possible to guide the participation timing to V2G so that the user who participates in V2G can benefit.

It is a schematic diagram which shows an example of the charge / discharge management system in 1st Embodiment which concerns on this invention. It is a functional block diagram which shows an example of the management server in 1st Embodiment which concerns on this invention. It is a figure explaining the charge / discharge timing determination process in 1st Embodiment which concerns on this invention. It is a 1st flowchart which shows an example of charge / discharge timing determination processing in 1st Embodiment which concerns on this invention. It is a 2nd flowchart which shows an example of charge / discharge timing determination processing in 1st Embodiment which concerns on this invention. It is a 3rd flowchart which shows an example of charge / discharge timing determination processing in 1st Embodiment which concerns on this invention. It is a 4th flowchart which shows an example of charge / discharge timing determination processing in 1st Embodiment which concerns on this invention. It is 1st flowchart which shows an example of charge / discharge operation condition calculation processing in 1st Embodiment which concerns on this invention. It is a 2nd flowchart which shows an example of charge / discharge operation condition calculation processing in 1st Embodiment which concerns on this invention. It is a schematic diagram which shows an example of the charge / discharge management system in 2nd Embodiment which concerns on this invention. It is a functional block diagram which shows an example of the management server in 2nd Embodiment which concerns on this invention. It is a sequence diagram which shows an example of the electric power adjustment processing in 2nd Embodiment which concerns on this invention. It is a figure which shows an example of the hardware composition of the management server 10 which concerns on this invention.

<First Embodiment>
Hereinafter, the charge / discharge management system according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 7.
FIG. 1 is a schematic view showing an example of a charge / discharge management system according to the first embodiment of the present invention.
The charge / discharge management system is a system that supports and controls participation of EVs (Electric Vehicles) in V2G (Vehicle to Grid) services. V2G is a power adjustment method such as demand response and ancillary service that is implemented to maintain the frequency of the power system and the balance between power supply and demand. Equipment such as a generator and ESS (Energy Storage Systems) is often used for V2G, but power adjustment is also possible by inputting / outputting the battery mounted on the EV to / from the power system. By participating in V2G, EV users can get a reward for providing the EV-mounted battery in the power system. In addition, the operator S, which operates the charge / discharge management system, makes a contract with many EV users, mediates the participation of the EV in V2G, and obtains the mediation fee. In addition, the business operator S gives an incentive to the user who participated in V2G, for example, by adding an incentive amount to the user points or the reward amount for V2G participation, and promotes V2G participation. .. Although only one EV is shown in FIG. 1, in the present embodiment, participation of a large number of EV1 groups in V2G is supported, and charging / discharging of EVs participating in V2G is controlled.

As shown in FIG. 1, the charge / discharge management system includes a management server 10, an information terminal 20 for an EV user, an EV (electric vehicle) 1 and a battery 1A mounted on the EV, a power conversion device 2, and a building (house). ) 3 and a transmission line for transmitting and receiving electric power to and from the electric power system and its ancillary equipment (transmission equipment) 4.

The user parks EV1 used by himself / herself in the building 3, connects it to the power conversion device 2, and charges / discharges the battery 1A. For example, the electric power of the battery 1A is used for home appliances, or the electric power of the battery 1A is discharged to the electric power system via the electric power converter 2 and the power transmission facility 4 by participating in the V2G service. Further, the battery 1A is charged via the power transmission facility 4 and the power conversion device 2.
The management server 10 gives the user of EV1 V2G to the user based on the purchase price of the battery 1A mounted on the EV1 used by the user and the reward amount by V2G (or an incentive may be further added to the reward amount). It determines whether participation in V2G is economically beneficial, and sends a message recommending participation in V2G when it is beneficial to the user. Alternatively, the management server 10 controls charging / discharging of the battery 1A to the power system at a timing that is beneficial to the user.

The information terminal 20 is a mobile terminal used by the EV1 user. The information terminal 20 acquires information on the charging state when the EV 1 is charged and discharged by using the power conversion device 2 by wirelessly communicating with the BMS (Battery Management System) of the EV 1. The information terminal 20 is communicably connected to the management server 10, and for example, transmits the acquired information on the charging state to the management server 10. Further, the information terminal 20 acquires information such as incentives given to the user up to now and how much profit it is to participate in V2G from the management server 10 and provides the information to the user.

FIG. 2 is a functional block diagram showing an example of the management server according to the first embodiment of the present invention.
As shown in the figure, the management server 10 includes a data acquisition unit 101, a participation rate prediction unit 102, an in-facility load prediction unit 103, a battery deterioration prediction unit 104, a battery purchase price calculation unit 105, and a reward amount calculation unit 106. , The charge / discharge timing determination unit 107, the message transmission unit 108, the charge / discharge control unit 109, the incentive giving unit 110, the operation condition calculation unit 111, the charge / discharge possible capacity calculation unit 112, and the communication unit 120. It includes a storage unit 121.
The data acquisition unit 101 includes actual information or forecast information of the electric power transaction price in a predetermined period, actual information or forecast information of the electric power system that provides electric power in the V2G service in the predetermined period, charge state information and deterioration degree of the battery 1A of EV1. The participation rate prediction unit 102, which acquires information, purchase price information of the battery 1A, etc., predicts the participation rate (number of participants) of EV1 participating in the V2G service in a predetermined period based on past results and the like. For example, the storage unit 121 records that the amount of reward obtained by participating in the V2G service is high and the participation rate is high during the time when the demand for electric power is high. The participation rate prediction unit 102 predicts the participation rate in that time zone based on, for example, the actual results of the storage unit 121.

The in-equipment load prediction unit 103 predicts the amount of electric power used in the equipment 3 to which the battery 1A supplies electric power.
The battery deterioration prediction unit 104 predicts the degree of deterioration that occurs in the battery 1A by participating in the V2G service. For example, the battery deterioration prediction unit 104 occurs in the battery 1A based on the deterioration characteristic information for each type of the battery 1A recorded in the storage unit 121 (for example, the degree of deterioration that progresses with respect to charge / discharge per unit capacity). Predict the degree of deterioration.
The battery purchase price calculation unit 105 determines the purchase price of the battery 1A when participating in the V2G service based on the battery purchase price in the current battery trading market and the degree of deterioration of the battery 1A predicted by the battery deterioration prediction unit 104. calculate. Further, the battery purchase price calculation unit 105 calculates the difference (battery purchase fluctuation amount) between the case where the battery 1A participates and the case where the battery purchase price does not participate in V2G.
The reward amount calculation unit 106 calculates the reward amount paid to the user as consideration for the electric power provided when participating in the V2G service.
The charge / discharge timing determination unit 107 compares the reward amount when participating in the V2G service with the battery purchase fluctuation amount, and the reward amount is larger than the battery purchase fluctuation amount (the decrease in the battery purchase price that decreases due to battery deterioration). If it is larger than a predetermined value, it is determined that it is time for the user to participate in the V2G service.

When the charge / discharge timing determination unit 107 determines that the charge / discharge timing is set, the message transmission unit 108 transmits a message recommending participation in the V2G service during that time period to the information terminal 20 used by the user.
When the charge / discharge control unit 109 determines that the charge / discharge timing determination unit 107 is the charge / discharge timing, the charge / discharge control unit 109 connects the battery 1A of the EV1 connected to the power conversion device 2 and the power system, and transfers power between the power system. Control to allow flexibility.
The incentive giving unit 110 calculates an incentive for a user who has participated in the V2G service, and gives the incentive to the user. For example, a user ID and user points acquired by the user are recorded in association with each other in the storage unit 121, and the incentive giving unit 110 provides the storage unit 121 with points corresponding to an incentive for participating in the V2G service. Add to the recorded points of the user.

The operating condition calculation unit 111 predicts the replacement time of the battery 1A according to the degree of providing the battery 1A to the V2G, and calculates the number of replacements of the battery 1A during the period when the user uses the EV1. Further, the operation condition calculation unit 111 calculates the number of times the battery 1A can be provided to the V2G during the period in which the user uses the EV1 based on the calculated number of times the battery 1A is replaced. The period during which the user uses EV1 is the period from when the user obtains EV1 to when it is released. For example, from the purchase of EV1 to disposal or from the purchase to sale. Or, if EV1 is rented, it is the rental period.
The charge / discharge possible capacity calculation unit 112 calculates the charge / discharge capacity that can be provided from the battery 1A to the V2G based on the charge state information of the battery 1A and the information of the amount of electric energy that is planned to be used by supplying the battery 1A to the building 3.
The communication unit 120 communicates with another device (information terminal 20, etc.).
The storage unit 121 stores various information necessary for determining the charge / discharge timing.

Hereinafter, the charge / discharge timing determination process will be described with reference to FIGS. 3 to 7.
FIG. 3 is a diagram illustrating a charge / discharge timing determination process according to the first embodiment of the present invention.
FIG. 3A is a graph showing, for example, the actual or forecast of the electricity transaction price in 24 hours. The data acquisition unit 101 acquires the actual or forecast information of the electric power transaction price illustrated in FIG. 3A and records it in the storage unit 121. The vertical axis of FIG. 3A shows the power unit price, and the horizontal axis shows the time. When a user participates in V2G and provides electric power to the electric power system, a reward amount obtained by multiplying the electric power unit price determined according to the provided time by the amount of electric power provided from the battery 1A of the user's EV1 is obtained. The charge / discharge timing determination unit 107 calculates the amount of reward that the user can obtain based on the actual or forecast information of the electric power transaction price.

FIG. 3B is a graph showing, for example, the actual or forecast of the electric power system in 24 hours. The data acquisition unit 101 acquires the actual information or the prediction information of the electric power system illustrated in FIG. 3B and records it in the storage unit 121. The vertical axis of FIG. 3B shows the amount of electric power demand, and the horizontal axis shows time.
Graph 31 shows the demand forecast, graph 32 shows the actual demand, and graph 33 shows the net demand for supply and demand. The actual information (or forecast information) of the electric power system includes information that allows the operator S to calculate the amount of electric energy to be procured by the V2G service.
The participation rate prediction unit 102 prefers to receive the power provided by V2G based on the amount of power demand, and for that purpose, how many EV1s need to participate in the V2G service. The actual (forecast) information of the power system is used to calculate.

FIG. 3C shows a transition of the purchase price of the battery for a certain EV1 (graph 34) and a transition of the cumulative value of the reward amount obtained by participating in V2G (graph 35). The data acquisition unit 101 acquires the prediction information of the purchase price of the battery illustrated in FIG. 3C and records it in the storage unit 121. The vertical axis of FIG. 3C shows the price, and the horizontal axis shows the degree of participation in V2G (number of times, time, amount of charged / discharged power, etc.). As shown in the figure, the more one participates in V2G, the lower the purchase price of the battery 1A and the higher the cumulative value of the reward amount by V2G.
The charge / discharge timing determination unit 107 determines the timing of participation in V2G when the purchase price of the battery is equal to or higher than a predetermined price. Further, the charge / discharge timing determination unit 107 may determine that it is the timing to prompt the replacement of the battery 1A when the purchase price of the battery falls below a predetermined price (for example, the cumulative value of the reward amount). Next, an example of the charge / discharge timing determination process of the present embodiment will be described.

(When the user decides to participate in V2G by himself)
FIG. 4 is a first flowchart showing an example of charge / discharge timing determination processing according to the first embodiment of the present invention.
Hereinafter, with reference to FIG. 4, a process in which the user decides to participate in V2G by himself / herself based on the participation recommendation information for V2G notified from the management server 10 will be described.
First, the data acquisition unit 101 collects the actual information (or forecast information) of the electric power transaction price for each unit time (step S10). Since the electric power transaction price for each unit time is acquired, the reward amount calculation unit 106 can calculate the reward amount that fluctuates for each unit time. Next, the data acquisition unit 101 collects the actual information (or forecast information) of the power system for each unit time (step S11). Since the power system information for each unit time is acquired, the participation rate prediction unit 102 is used to calculate how many EV1s need to participate in the V2G service for each unit time. As the actual information of the electric power transaction price and the actual information of the electric power system, the data published by the electric power company and related organizations can be used.

In parallel with steps S10 and S11, the data acquisition unit 101 collects charge status information of the battery 1A mounted on the EV1 managed by the operator S (step S12). Next, the data acquisition unit 101 collects deterioration state information of the battery 1A mounted on the EV1 managed by the business operator S (step S13). The charge state information and the deterioration state information of the battery 1A are collected, for example, by being acquired by the information terminal 20 from the BMS of each EV1 by wireless communication and transmitted by the information terminal 20 to the management server 10. The data acquisition unit 101 records the charge state information and the deterioration state information of each battery 1A in the storage unit 121 in association with the EV1 identification information.
Further, the data acquisition unit 101 collects the battery purchase price information in the battery purchase market (step S14), and records this information in the storage unit 121.

Next, the participation rate prediction unit 102 predicts the participation rate of EV1 managed by the business operator S10 in V2G (step S15). For example, based on the power system information for each unit time, it is calculated how many EV1s should participate in V2G to meet the demand of the power system at each time. Further, the participation rate prediction unit 102 predicts how many EV1s will participate in V2G at that price based on the actual information of the electric power transaction price for each unit time. At this time, the participation rate prediction unit 102 calculates the participation rate of EV1 participating in V2G based on, for example, the past electric power transaction price and the actual number of participants at that time.

Next, the reward amount calculation unit 106 calculates the V2G participation reward amount of each EV1 for each unit time (step S16). For example, the reward amount calculation unit 106 calculates the capacity that the battery 1A can charge and discharge from the charge status information of the battery 1A of each EV1, and multiplies the capacity by the power transaction price for each unit time to participate in the participation reward of each EV1. Calculate the amount.
Next, the reward amount calculation unit 106 calculates the cumulative value of the reward amount obtained by participating in V2G for each EV1 (step S17). The history of the reward amount obtained by each EV1 participating in the V2G service is recorded in the storage unit 121, and the reward amount calculation unit 106 reads out this value and totals it.

Further, in parallel with steps S16 and S17, the battery deterioration prediction unit 104 calculates the battery deterioration of each EV1 due to V2G participation (step S18). The battery deterioration prediction unit 104 calculates the capacity that the battery 1A can charge and discharge from the charge state information of the battery 1A of each EV1, and calculates the deterioration rate of the battery 1A when the capacity is charged and discharged. For example, the storage unit 121 defines a deterioration rate for each unit capacity that progresses due to charging and discharging, and the battery deterioration prediction unit 104 predicts the deterioration rate using this information. Next, the battery purchase price calculation unit 105 calculates the purchase price of the battery 1A when the predicted deterioration occurs, based on the deterioration rate predicted by the battery deterioration prediction unit 104 and the battery purchase price information. The battery purchase price calculation unit 105 calculates the purchase price for each battery 1A (step S19). Next, the battery purchase price calculation unit 105 calculates the difference (battery purchase fluctuation amount) between the purchase price of the battery 1A when participating in V2G and the purchase price of the battery 1A when not participating (step S20). Specifically, the battery purchase price calculation unit 105 calculates the difference between the purchase price in the current deteriorated state and the purchase price calculated in step S19, and sets this as the battery purchase fluctuation amount.

Next, the charge / discharge timing determination unit 107 compares the cumulative value of the V2G participation reward amount with the battery purchase amount calculated in step S19 for all the batteries 1A, and the cumulative value of the reward amount is equal to or higher than the battery purchase price. Whether or not it is determined (step S21). When the accumulated reward amount is equal to or greater than the battery purchase price (step S21; Yes), the charge / discharge timing determination unit 107 determines that it is time to replace the battery 1A. The message transmission unit 108 notifies the user who uses the EV1 equipped with the battery 1A that it is time to replace the battery (step S22).

When the accumulated reward amount is less than the battery purchase price (step S21; No), the charge / discharge timing determination unit 107 determines whether the reward amount due to V2G participation for each unit time is smaller than the battery purchase price fluctuation amount due to V2G participation. (Step S23). If it is small (step S23; Yes), the message transmitter 108 is not the recommended timing to participate in V2G because the price decrease due to battery deterioration is larger than the merit of participating in V2G (V2G participation non-recommended timing). ) Is notified to the user who uses the EV1 equipped with the battery 1A (step S24).

When the amount of compensation for V2G participation per unit time is larger than the amount of battery purchase price fluctuation due to V2G participation (step S23; No), the merit of participating in V2G exceeds the price decrease due to battery deterioration, so the message transmitter Reference numeral 108 denotes a recommended timing for participating in V2G (recommended timing for participating in V2G) to notify the user using EV1 equipped with the battery 1A (step S25).
The user who has been notified of the V2G participation recommended timing or the V2G participation non-recommended timing determines the V2G participation timing based on the notified recommended information (step S26). For example, in consideration of the time when the user uses EV1, the time zone when the user is notified that it is the V2G recommended participation timing, the convenient time zone, or the participation fee amount per unit time It is decided to participate in V2G during the time period when the difference from the battery purchase fluctuation amount is larger (the time period when the profit is larger). The notification of V2G participation recommended timing and V2G participation non-recommended timing includes information on the participation fee amount for V2G and the battery purchase fluctuation amount. When a user participates in V2G, the incentive giving unit 110 gives an incentive to the user according to, for example, the magnitude of the amount of power provided from the battery 1A.

FIG. 5 is a second flowchart showing an example of charge / discharge timing determination processing according to the first embodiment of the present invention.
Hereinafter, using FIG. 5, the case where the participation in V2G is decided by oneself based on the recommended information for participation in V2G, and the case where the supply from the battery 1A to the load (home appliances, etc.) in the user's house is included. A processing example of is described. Description of the same processing as in FIG. 4 will be omitted.
First, the data acquisition unit 101 collects the actual information of the electric power transaction price for each unit time (step S10). Next, the data acquisition unit 101 collects the actual information of the power system for each unit time (step S11). Further, the data acquisition unit 101 collects the charge status information of the battery 1A mounted on the EV1 managed by the business operator S (step S12). In addition, the data acquisition unit 101 collects battery purchase price information in the battery purchase market (step S14). Next, the in-equipment load prediction unit 103 predicts the operating state of the in-house / in-equipment load (step S123). For example, the in-facility load prediction unit 103 predicts the amount of power to be supplied to the building 3 for each unit time based on the actual result of the amount of power consumed by the load in the building 3 of the user 1 for each unit time. Next, the charge / discharge chargeable capacity calculation unit 112 supplies by V2G participation by subtracting the amount of power supplied to the building 3 predicted by the in-facility load prediction unit 103 from the amount of power that can be charged / discharged based on the charge status information of the battery 1A. The amount of power that can be generated (V2G participation capacity) is calculated (step S125).
Next, the data acquisition unit 101 collects the deterioration state information of the battery 1A mounted on the EV1 managed by the business operator S (step S13). The following processing is the same as in FIG. According to the process of FIG. 5, it is possible to determine the recommended / deprecated timing of participation in V2G in consideration of the amount of electric power supplied from the battery 1A to the building 3.

(When directly controlling EV1's V2G participation under user approval)
FIG. 6 is a third flowchart showing an example of charge / discharge timing determination processing according to the first embodiment of the present invention.
Hereinafter, with reference to FIG. 6, a process of controlling the management server 10 to automatically participate in V2G at the timing when the user makes a profit will be described with the approval of the user.
As a premise, it is assumed that the battery 1A of EV1 and the power conversion device 2 are connected. Further, it is assumed that the business operator S25 has obtained approval from the user to automatically participate in the V2G service when the recommended timing for V2G participation arrives.
Since the processes from step S10 to step S25 are the same as those in FIG. 4, the description thereof will be omitted. In the process of FIG. 6, after step S25, the charge / discharge control unit 109 controls to connect the EV1 battery 1A used by the user who has notified the V2G participation recommended timing to the power system (step S27). For example, the power converter 2 is provided with a climate for switching between a route connecting the battery 1A and the building 3 and a route connecting the battery 1A and the power transmission facility 4, and when the recommended timing for V2G participation arrives, The charge / discharge control unit 109 switches the control system so as to directly connect the battery 1A and the power transmission facility 4 via the power conversion device 2. As a result, the electric power company that operates the V2G service can use the battery 1A. As a result, the target EV1 can be automatically joined to V2G.

FIG. 7 is a fourth flowchart showing an example of charge / discharge timing determination processing according to the first embodiment of the present invention.
Hereinafter, using FIG. 7, when the user decides to participate in V2G by himself / herself based on the information recommended for participation in V2G, the management server 10 automatically participates in V2G at the recommended timing for participation in V2G. An example of processing in the case of performing the above control and further including the supply from the battery 1A to the load (home appliances, etc.) in the user's house will be described. The description of the same processing as in FIG. 5 will be omitted.
As a premise, it is assumed that the battery 1A of EV1 and the power conversion device 2 are connected. Further, it is assumed that the business operator S25 has obtained approval from the user to automatically participate in the V2G service when the recommended timing for V2G participation arrives.
Since the processes from step S10 to step S25 are the same as those in FIG. 5, the description thereof will be omitted. In the process of FIG. 7, after step S25, the charge / discharge control unit 109 controls to connect the EV1 battery 1A used by the user who has notified the V2G participation recommended timing to the power system (step S27). The process of step S27 is the same as that described with reference to FIG.

According to the present embodiment, when the battery 1A mounted on the EV1 participates in the V2G for stabilizing the power quality of the power system, the user of the EV1 obtains a provision price that exceeds the decrease in the battery price due to the battery deterioration. It becomes possible. Since it is possible to provide a mechanism that can provide profits to users of electric vehicles, it is possible to promote the spread of electric vehicles.

In step S23 of FIGS. 4 to 7, the V2G participation fee amount and the battery purchase fluctuation amount due to V2G participation were compared. Instead, the V2G participation fee amount and the incentive for the user to participate in V2G were provided. Even if the V2G participation recommended timing is determined on the condition that the value obtained by comparing the added value with the battery purchase fluctuation amount and the value obtained by adding the V2G participation fee amount and the incentive for V2G participation exceeds the battery purchase fluctuation amount. Good. By doing so, for example, even if the V2G participation fee amount is lower than the battery purchase fluctuation amount, the user (EV1) who participates in V2G can set the incentive (for example, set a large user point) of the operator S. You can increase the number. As a result, the threshold for participation in V2G will be lowered, many EV1s will be able to participate in V2G, it will be easier to stabilize the power, and the power supply to the flexible system using electric vehicles will be promoted. It is possible to promote the spread of electric vehicles by saving energy in society as a whole and improving the utility value of electric vehicles. In addition, the user can effectively use the incentive (user points) given by the incentive giving unit 110 when purchasing a new battery when replacing the battery 1A deteriorated by active participation in V2G. It can be utilized.

So far, the process of determining the timing for recommending V2G participation in a predetermined period in the near future has been described. The management server 10 may have a function of creating useful information (charge / discharge operation conditions) for considering participation in the V2G service for a longer period of time. Hereinafter, the charge / discharge operation condition calculation process by the operation condition calculation unit 111 will be described with reference to FIGS. 8 to 9.
The operation condition calculation unit 111 creates a participation plan for V2G (number of times to participate in V2G) based on the following formula (1).
BP = FIT-CEV-CBT x N-EF ... (1)
Here, BP is the balance of EV1 users. CEV is the purchase cost of EV1 (it is assumed that one set of battery 1A is included when EV1 is purchased). CBT is the replacement cost of battery 1A. N is the period during which the user 1 uses EV1 (life of EV1, from purchase to sale of EV1, etc.) EF is a charging charge required for charging the battery 1A during the period during which EV1 is used. FIT is the total amount of rewards obtained by charging and discharging the power system by participating in V2G during the period when EV1 is used. In addition, the cost of the charger / discharger, the cost of scrapping the car, etc., the profit amount obtained by selling the used battery at the time of battery replacement, and the profit amount from the sale of EV1 when selling EV1 are added to the formula (1). You may.

The operating condition calculation unit 111 assumes that the battery is replaced multiple times according to the above formula (1), and considers the EV1 purchase cost, the charge charge expense, the battery replacement cost, and the reward amount obtained by V2G, and determines the EV1. Simulate the user's balance from acquisition to release. That is, in the formula (1), the number of times of participation in V2G is assumed variously, and the reward amount FIT in that case is calculated. In that case, the battery replacement time is calculated from the number of times of participation in V2G and the deterioration rate of the battery per participation in V2G, and N of the number of times of battery replacement is calculated, and the purchase price of the predetermined battery and the battery charge are calculated. Based on the prediction model, the battery replacement cost CBT at the battery replacement time estimated from the deterioration rate is calculated, and the charging charge EF is calculated from the mileage estimated according to the degree of use of EV1 by the user. By substituting these values into the equation (1), the number of times of participation in V2G per battery when the balance BP is maximized is calculated.

The operation for the user to improve the balance as much as possible after obtaining EV1 is as follows.
(A) Participate as much as possible in V2G operation and get rewards.
(B) Suppress battery deterioration (do not use batteries) and reduce battery replacement costs.
(C) Do not pay the charging fee as much as possible by reducing the running as a car.
If the battery 1A is provided by participating in V2G, the deterioration of the battery is accelerated, so that (a) and (b) are contradictory events. In addition, the EV1 driving pattern and the temperature in the area also affect the battery deterioration. Therefore, the operation condition calculation unit 111 uses an equation (1 means the number of times of participation in the V2G participation plan in which the maximum profit can be obtained (for example, the number of times of participation when the charge / discharge amount per time is constant)) using the influence of this as a parameter. (Participation time, etc. when the charge / discharge amount per unit time is constant) is calculated.

FIG. 8 is a first flowchart showing an example of charge / discharge operation condition calculation processing according to the first embodiment of the present invention.
As a premise, it is assumed that the EV1 usage period is predetermined.
First, the data acquisition unit 101 acquires a prediction of EV1 travel pattern information. The traveling pattern is an average mileage per unit period (for example, one day). Next, the operating condition calculation unit 111 predicts the deterioration rate of the battery 1A per unit period based on the traveling pattern (step S30). Next, the operation condition calculation unit 111 calculates the deterioration rate of the battery 1A due to one participation in V2G, and the operation condition calculation unit 111 sets the number of participations in V2G per unit period, and sets the number of participations and the number of participations. The deterioration rate due to V2G operation obtained by multiplying the deterioration rate due to one participation and the deterioration rate due to running calculated in step S30 are added (step S31).
Next, the operation condition calculation unit 111 calculates the replacement time of each battery 1A based on the battery deterioration due to V2G operation and running, and predicts the number of battery replacements N during the EV1 usage period (step S32). .. Next, the operating condition calculation unit 111 calculates the total balance (BP) by the equation (1). Next, the operation condition calculation unit 111 sets various times of participation in V2G per unit period, repeats the processes of steps S31 to S33, and predicts the V2G operation condition when the BP becomes maximum (step S34). ). The message transmission unit 108 notifies the user of the predicted operating conditions.
The operating conditions are, for example, the number of times of participation in V2G that can be performed before replacing the battery 1A when it is decided that the deterioration rate of the battery 1A is X% (charging / discharging in one V2G participation). The capacity to be used is set to a certain value), the total participation time, etc. This allows the user to know how often he / she should participate in V2G to make the most profit while he / she is using EV1.

Next, some methods for calculating V2G operating conditions with higher accuracy will be described.
FIG. 9 is a second flowchart showing an example of the charge / discharge operation condition calculation process according to the first embodiment of the present invention.
FIG. 9A shows another example of the process described in step S30 of FIG.
First, the data acquisition unit 101 acquires the actual running record information of EV1 by the user.
Next, the operating condition calculation unit 111 predicts the deterioration rate of the battery 1A per unit period based on the actual running results (step S301). The following processing is the same as the flowchart of FIG. With this method, it is possible to predict the battery deterioration rate closer to reality from the actual EV1 running record, improve the estimation accuracy of the battery replacement frequency N in the equation (1), and optimize the V2G operating conditions. ..
For example, the management server 10 acquires driving data for each predetermined period from each EV1 and optimizes the optimized V2G operating conditions at regular intervals by the process of FIG. 9A. Then, the information is transmitted to each user.

FIG. 9B shows another example of the processing described in steps S30 and S31 of FIG.
First, the deterioration rate of the battery 1A due to the running of EV1 is measured (step S302). For example, a sensor provided in EV1 measures the charge / discharge capacity, voltage, temperature, etc. related to the deterioration rate (step S302). Next, the data acquisition unit 101 acquires these measured values. Next, the operation condition calculation unit 111 adds the deterioration rate per unit period of the battery 1A to the deterioration rate due to V2G operation based on the measured value indicating the deterioration rate of the battery 1A (step S302). The following processing is the same as the flowchart of FIG. With this method, the actual deterioration rate can be obtained by measuring the deterioration rate of the EV1 battery 1A. Therefore, the value of the battery replacement frequency N in the more accurate formula (1) is obtained, and the V2G operating conditions are set. It can be optimized.

According to the operating condition calculation unit 111, the battery during the EV1 usage period (for example, the period from the user purchasing the EV1 until the vehicle is scrapped, the EV1 usage period contracted by the user with the business operator S, etc.) Taking into consideration the exchange, it is possible to grasp the V2G operating conditions for maximizing the long-term total balance.
Further, by using the methods of FIGS. 9A and 9B, it is possible to modify the V2G operating conditions according to the actual running pattern and the battery deterioration rate after EV1 is obtained.
Some users who participate in power adjustment with V2G want to make a profit from V2G even if the battery is replaced, rather than making EV1 last longer. According to the operation condition calculation unit 111, it is possible to present V2G operation conditions for obtaining total merit even to such a user. In addition, by utilizing it together with the information on the optimum participation timing for V2G in the near future explained in FIGS. 4 to 7, the user can obtain the information on the participation timing that can make a profit in a short period of time and the information on the participation timing from a long-term perspective. You can decide to participate in V2G while referring to the profitable V2G operation plan.

<Second Embodiment>
Hereinafter, the power adjustment method by V2G participation of EV1 according to the second embodiment of the present invention will be described. In the first embodiment, the process of providing the timing and operating conditions for the user to participate in V2G has been described from the viewpoint of enabling the user to benefit from participating in V2G. In this second embodiment, EV1 is moved to a charging spot equipped with equipment capable of charging / discharging a larger capacity (rapid charging / discharging device) to perform charging / discharging of a large capacity while protecting the interests of the user. A method in which the operator S (electric power aggregator) efficiently collects EV1s participating in V2G and adjusts the electric power will be described.

Hereinafter, a method of adjusting the power supply and demand balance by participating in V2G of the EV of the present embodiment will be described with reference to FIGS. 10 to 12.
Of the configurations according to the second embodiment of the present invention, the same configurations as those of the charge / discharge management system according to the first embodiment of the present invention are designated by the same reference numerals, and their description will be omitted.

FIG. 10 is a schematic view showing an example of a charge / discharge management system according to the second embodiment of the present invention.
As shown in FIG. 10, the charge / discharge management system of the present embodiment includes a management server 10A, batteries 1A (not shown) mounted on EV1 and EV1, a power conversion device 2, a building 3, and a power transmission facility 4. A rapid charging / discharging device 5, a warehouse 6, a high-pressure power transmission facility 7, a regenerative energy power generation facility 8, and a power generation facility 9 are included. The electric power generated by the regenerative energy power generation facility 8 and the power generation facility 9 is supplied to the power system via the high-voltage power transmission facility 7, and the electric power of the rapid charging / discharging device 5 of the charging spot and the building 3 via the power transmission facility 4. It is supplied to the conversion device 2. Further, power transfer between the battery 1A and the power system by V2G is performed via the rapid charge / discharge device 5 and the power line PL. Further, the management server 10A and the vehicle-mounted device mounted on the EV1 are connected to each other so as to be able to communicate with each other via, for example, the information terminal 20 or the like.

Although it is possible to use a household charging system (power conversion device 2) as a facility for inputting and outputting electric power from EV1 to the electric power system, the electric power capacity for household use is generally about several to 10 kW, and a relatively large battery is installed. For EV1, it is inefficient to conduct a power adjustment business via a household grid because the capacity is too small. Therefore, it is preferable to charge / discharge from the high-power specification rapid charge / discharge device 5 installed at the charging spot. For example, when EV1 automatically moves to a rapid charge / discharge spot at the timing when it should participate in V2G and connects to the power system, when the user wants to use EV1, it automatically operates in a place where the user exists, such as a building 3 or a warehouse 6. It is possible to effectively use the EV1 battery 1A by performing control such as returning with.

FIG. 11 is a functional block diagram showing an example of the management server according to the second embodiment of the present invention.
As shown in the figure, the management server 10A includes a data acquisition unit 101, a participation rate prediction unit 102, an in-equipment load prediction unit 103, a battery deterioration prediction unit 104, a battery purchase price calculation unit 105, and a reward amount calculation unit 106. , Charge / discharge timing determination unit 107, message transmission unit 108, charge / discharge control unit 109, incentive giving unit 110, operation condition calculation unit 111, charge / discharge possible capacity calculation unit 112, and power adjustment condition determination unit. It includes 113, a charge / discharge condition generation unit 114, a recruitment condition generation unit 115, an EV selection unit 116, a communication unit 120, and a storage unit 121.
The power adjustment condition determination unit 113 determines the condition (power adjustment condition) of the amount of power to be adjusted by V2G. The power adjustment condition is, for example, a required power adjustment amount for each unit time.
The charge / discharge condition generation unit 114 generates charge / discharge conditions based on the power adjustment conditions. The charge / discharge conditions are the number of operable charge / discharge channels, the upper limit of power input / output, the chargeable / dischargeable capacity of the battery, and the arrival time of EV1 at the charge / discharge spot.
The recruitment condition generation unit 115 generates the recruitment conditions required for EV1 participating in V2G. The recruitment conditions are V2G start time, power input / output upper limit, battery charge / discharge capacity, incentives (user points, etc.) and reward amount for V2G participation.
The EV selection unit 116 selects an appropriate EV1 from the EV1s wishing to participate in V2G, which is subject to the above recruitment conditions.

FIG. 12 is a sequence diagram showing an example of the power adjustment process according to the second embodiment of the present invention.
First, the power adjustment condition determination unit 113 determines the desired power adjustment condition (step S40). For example, the power adjustment condition determination unit 113 determines the required power adjustment amount for each unit time based on the power system information (demand and supply information) acquired by the data acquisition unit 101.
Next, the charge / discharge condition generation unit 114 determines the charge / discharge conditions (step S41). For example, the number of charge / discharge channels that can be operated is determined based on the operating status of the charging spots in each region and the required power adjustment amount. Further, for example, the power input / output upper limit value and the chargeable / dischargeable capacity of the battery 1A are determined based on the specifications of the rapid charge / discharge device 5. Further, the arrival time of the EV1 at the charging spot is determined based on the time when the power adjustment amount is required.
Next, the recruitment condition generation unit 115 generates recruitment conditions and distributes them to each EV1 (step S42). Each EV1 acquires recruitment conditions. In each EV1, the on-board unit receives the power input / output value of the battery 1A, the capacity that the battery 1A can charge / discharge, and the travel time based on the current position of each EV1 and the travel distance to the predetermined charging spot. It is determined whether or not the conditions are met (step S401), and if the recruitment conditions are met, information (application information) to apply for participation in V2G is provided along with information such as power input / output value, chargeable / dischargeable capacity, and travel time. , Sent to the management server 10A (step 402). The data acquisition unit 101 acquires this information and outputs it to the EV selection unit 116. The EV selection unit 116 evaluates each EV1 that has been applied for, and selects one that meets the conditions (step S43). For example, the EV selection unit 116 may preferentially select EV1 having a shorter movement time to the charge / discharge spot. Alternatively, the EV selection unit 116 may be selected in order from the one having the largest chargeable / discharging capacity of the battery 1A. Alternatively, the EV selection unit 116 may be selected in order from the one having the largest power input / output value of the battery 1A. Further, the same processing as in step S23 is performed from step S10 in FIG. 4, and only EV1 in which the participation fee amount for each unit time when participating in V2G exceeds the battery purchase fluctuation amount due to V2G participation is extracted. , EV1 that meets the conditions may be selected based on the travel time and the like. Alternatively, if EV1 applies based on the V2G operating conditions described in FIG. 8 and the like, the EV selection unit 116 will use the conditions based on the travel time and the like regardless of whether or not there is a profit in this V2G participation. EV1 suitable for may be selected. The EV selection unit 116 notifies the on-board unit of the selected EV1 via the communication unit 120 of the acceptance decision. Upon receiving the notification of acceptance decision, EV1 starts moving by automatic operation and moves to the charging spot (step S403). Upon moving to the charging spot, the mechanism for connecting the rapid charging / discharging device 5 and the battery 1A automatically or the person in charge of the charging spot connects the rapid charging / discharging device 5 and the battery 1A. EV1 that has completed the movement notifies the management server 10A of the completion of the movement (step S404). In the management server 10A, the charge / discharge control unit 109 checks whether the EV1 battery 1A, which has been notified of the completion of movement, can be charged / discharged (step S45). If charging / discharging is not possible for some reason, the processes after step S42 are repeated. If charging / discharging is possible, the charging / discharging control unit 109 charges / discharges the battery 1A to adjust the power (step S46, step S405). When the power adjustment is completed, EV1 moves to a predetermined position (original parking lot, etc.) by automatic operation (step S406).
Further, in the management server 10A, the reward amount calculation unit 106 calculates the reward amount according to the electric energy provided by V2G. In addition, the incentive giving unit 110 calculates an incentive for participation in V2G (step S47).

In the flowchart of FIG. 12, the process of distributing the recruitment conditions from the management server 10, soliciting EV1s satisfying the conditions, and further selecting EV1 from them has been described as an example (step of FIG. 12). S42 to S44), the process shown in FIG. 4 of the first embodiment is applied to each EV1 (battery 1A) of the user who has signed a contract with the operator S to participate in V2G in advance under appropriate conditions. , EV1 whose reward amount for V2G participation per unit time exceeds the battery purchase fluctuation amount is selected from among them, and the selected EV1 is processed in steps S44 and subsequent steps, so that the required amount of EV1 is obtained. It may be controlled to participate in V2G. In addition, in the condition determination of step S23, the reward amount is changed to the battery purchase fluctuation amount and the movement to the charging spot so that the electric energy and time consumed when EV1 moves by automatic operation can be sufficiently recovered by the reward amount. EV1 may be selected, which is larger than the sum of the charging costs corresponding to the required electric energy. Alternatively, the travel time to the charging spot is further converted into a cost, and the reward amount obtained by participating in V2G corresponds to the battery purchase fluctuation amount and the amount of power required to travel to the charging spot, and the cost corresponding to the charging cost and travel time. Control may be performed such that only EV1 that is larger than the sum of is selected and participated in V2G.

According to this embodiment, an electric power aggregator (for example, a business operator S) that provides an electric power adjustment service rapidly charges / discharges EV1 contracted via a communication network when electric power adjustment is required, or EV1 that satisfies the recruitment condition. It is possible to move by automatic operation and participate in the power adjustment service by V2G. By participating in the power adjustment service (V2G) through the rapid charge / discharge spot that can input and output with high power, the user can efficiently obtain the reward amount in a short time.
Further, in the case of the embodiment in which EV1 satisfying the recruitment condition is called, the battery 1A of EV1 in the neighboring area to which the business operator S does not have a contract can be flexibly utilized. Basically, as a power aggregator, it is desirable to have a battery (contracted EV1) that reliably supplies power, but for example, in the case of an embodiment in which EV1 is called in an application format, the reward amount in the recruitment conditions is set low. There is an advantage that it is possible to procure electricity and negative watts at a lower cost by starting recruitment in a state and adopting an auction format in which the reward amount is gradually increased when a sufficient number of EV1s are not collected. ..

(Hardware configuration)
The management server 10 can be realized by using, for example, a general computer 500. FIG. 13 shows an example of the configuration of the computer 500.
FIG. 13 is a diagram showing an example of the hardware configuration of the management server 10 according to the present invention.
The computer 500 includes a CPU (Central Processing Unit) 501, a RAM (Random Access Memory) 502, a ROM (Read Only Memory) 503, a storage device 504, an external I / F (Interface) 505, an input device 506, an output device 507, and communication. It has I / F 508 and the like. These devices send and receive signals to and from each other via bus B.

The CPU 501 is an arithmetic unit that realizes each function of the computer 500 by reading programs and data stored in the ROM 503, the storage device 504, and the like on the RAM 502 and executing processing. For example, each of the above-mentioned functional units is a function provided in the computer 500 by the CPU 501 reading and executing a program stored in the ROM 503 or the like. The RAM 502 is a volatile memory used as a work area or the like of the CPU 501. The ROM 503 is a non-volatile memory that retains programs and data even when the power is turned off. The storage device 504 is realized by, for example, an HDD (Hard Disk Drive), an SSD (Solid State Drive), or the like, and stores an OS (Operation System), an application program, various data, and the like. The external I / F 505 is an interface with an external device. The external device includes, for example, a recording medium 509 and the like. The computer 500 can read and write to the recording medium 509 via the external I / F 505. The recording medium 509 includes, for example, an optical disk, a magnetic disk, a memory card, a USB (Universal Serial Bus) memory, and the like.

The input device 506 is composed of, for example, a mouse, a keyboard, or the like, and inputs various operations or the like to the computer 500 in response to an instruction from the operator. The output device 507 is realized by, for example, a liquid crystal display, and displays the processing result by the CPU 501. The communication I / F 508 is an interface for connecting the computer 500 to a network such as the Internet by wired communication or wireless communication. The bus B is connected to each of the above-mentioned constituent devices, and various signals and the like are transmitted and received between the constituent devices.

The process of each process on the management server 10 described above is stored in a computer-readable recording medium in the form of a program, and the computer of the management server 10 reads and executes this program to perform the process. Will be. Here, the computer-readable recording medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Further, this computer program may be distributed to a computer via a communication line, and the computer receiving the distribution may execute the program.

Further, the above program may be for realizing a part of the above-mentioned functions. Further, a so-called difference file (difference program) may be used, which can realize the above-mentioned functions in combination with a program already recorded in the computer system.
Further, the management server 10 may be composed of one computer or a plurality of computers connected so as to be able to communicate with each other.

In addition, it is possible to replace the components in the above-described embodiment with well-known components as appropriate without departing from the spirit of the present invention. Further, the technical scope of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. The data acquisition unit 101 is an example of an electric power transaction price information acquisition unit and a battery status information acquisition unit. The management servers 10 and 10A are examples of the determination device.

10, 10A ... Management server 20 ... Information terminal 101 ... Data acquisition unit 102 ... Participation rate prediction unit 103 ... Equipment load prediction unit 104 ... Battery deterioration prediction unit 105 ... Battery purchase price calculation unit 106 ... Reward amount calculation unit 107 ... Charge / discharge timing determination unit 108 ... Message transmission unit 109 ... Charge / discharge control unit 110 ... Incentive granting unit 111 ... Operating conditions Calculation unit 112: Charge / dischargeable capacity calculation unit 113: Power adjustment condition determination unit 114: Charge / discharge condition generation unit 115: Recruitment condition generation unit 116: EV selection unit 120: Communication Unit 121 ... Storage unit 1 ... EV
1A ... Battery 2 ... Power conversion device 3 ... Building 4 ... Power transmission equipment 5 ... Rapid charge / discharge device 6 ... Warehouse 7 ... High-voltage power transmission equipment 8 ... Regenerated energy power generation Equipment 9 ・ ・ ・ Power generation equipment

Claims (9)

It is a method of determining the charge / discharge timing to the power system by a computer.
The step of acquiring information on the transaction price of electric power by charging and discharging the electric power system, and
Steps to get the status of the batteries installed in the electric vehicle,
Based on the transaction price information, a step of calculating the reward amount obtained by the user of the electric vehicle by charging / discharging the battery to the power system, and
A step of calculating the amount of decrease in the purchase price of the battery due to charging / discharging from the battery based on the deterioration characteristics due to the use of the battery, and
A step of determining the timing at which the user of the electric vehicle performs charging / discharging based on the difference between the reward amount and the reduced amount, and
A step of comparing the purchase price of the battery mounted on the electric vehicle with the cumulative value of the reward amount, and determining that it is the battery replacement timing when the purchase price of the battery is equal to or less than the cumulative value of the reward amount. When,
The determination method having. It is a method of determining the charge / discharge timing to the power system by a computer.
The step of acquiring information on the transaction price of electric power by charging and discharging the electric power system, and
Steps to get the status of the batteries installed in the electric vehicle,
Based on the transaction price information, a step of calculating the reward amount obtained by the user of the electric vehicle by charging / discharging the battery to the power system, and
A step of calculating the amount of decrease in the purchase price of the battery due to charging / discharging from the battery based on the deterioration characteristics due to the use of the battery, and
A step of determining the timing at which the user of the electric vehicle performs charging / discharging based on the difference between the reward amount and the reduced amount, and
A step of calculating the number of times the battery mounted on the electric vehicle is replaced during the period in which the user uses the electric vehicle, and
A step of calculating the balance of the user during the period of using the electric vehicle based on the total amount of the reward during the period of using the electric vehicle and the cost required for replacing the battery.
Based on the calculated balance, the step of calculating the operating conditions for carrying out the charging / discharging, and
The determination method having. It is a method of determining the charge / discharge timing to the power system by a computer.
The step of acquiring information on the transaction price of electric power by charging / discharging to the electric power system, and
Steps to get the status of the batteries installed in the electric vehicle,
Based on the transaction price information, a step of calculating the reward amount obtained by the user of the electric vehicle by charging / discharging the battery to the power system, and
A step of calculating the amount of decrease in the purchase price of the battery due to charging / discharging from the battery based on the deterioration characteristics due to the use of the battery, and
A step of determining the timing at which the user of the electric vehicle performs charging / discharging based on the difference between the reward amount and the reduced amount, and
A step of notifying the user of the electric vehicle of the recruitment conditions for promoting charging / discharging to the electric power system, and
Steps to receive application information for notification of the recruitment conditions,
A step of selecting the electric vehicle that participates in the charging / discharging based on the reward amount from the electric vehicles corresponding to the received application information.
The determination method having. It is a method of determining the charge / discharge timing to the power system by a computer.
The step of acquiring information on the transaction price of electric power by charging and discharging the electric power system, and
Steps to get the status of the batteries installed in the electric vehicle,
Based on the transaction price information, a step of calculating the reward amount obtained by the user of the electric vehicle by charging / discharging the battery to the power system, and
A step of calculating the amount of decrease in the purchase price of the battery due to charging / discharging from the battery based on the deterioration characteristics due to the use of the battery, and
A step of determining the timing at which the user of the electric vehicle performs charging / discharging based on the difference between the reward amount and the reduced amount, and
A step of moving the electric vehicle participating in the charging / discharging to a charging spot in which a predetermined charging / discharging device is installed, and
The determination method having. In the step of determining the timing of charging / discharging,
When the reward amount is larger than the decrease amount by a predetermined value or more, it is determined that it is the timing to perform charging / discharging.
Further, a step of notifying the user of the electric vehicle of the timing of performing the charging / discharging,
The determination method according to any one of claims 1 to 4 . In the step of determining the timing of charging / discharging,
When the reward amount is larger than the decrease amount by a predetermined value or more, it is determined that it is the timing for charging / discharging.
Further, when the timing of charging / discharging is reached, the step of starting charging / discharging of the battery mounted on the electric vehicle,
The determination method according to any one of claims 1 to 5 . It is a method of determining the charge / discharge timing to the power system by a computer.
The step of acquiring information on the transaction price of electric power by charging and discharging the electric power system, and
Steps to get the status of the batteries installed in the electric vehicle,
Based on the transaction price information, a step of calculating the reward amount obtained by the user of the electric vehicle by charging / discharging the battery to the power system, and
The step of calculating the incentive given to the user of the electric vehicle for participating in the service of charging / discharging the battery to the power system, and
A step of calculating the amount of decrease in the purchase price of the battery due to charging / discharging from the battery based on the deterioration characteristics due to the use of the battery, and
When the sum of the reward amount and the incentive is larger than the decrease amount by a predetermined value or more, the step of determining that it is the timing for the user of the electric vehicle to charge and discharge,
The determination method having. The Electricity Transaction Price Information Acquisition Department, which acquires information on the transaction price of electric power by charging and discharging the electric power system,
A battery status information acquisition unit that acquires the status of batteries installed in electric vehicles,
Based on the transaction price information, a reward amount calculation unit that calculates a reward amount obtained by the user of the electric vehicle by discharging from the battery, and a reward amount calculation unit.
A battery purchase price calculation unit that calculates the amount of decrease in the purchase price of the battery due to discharging from the battery based on the deterioration characteristics due to the use of the battery.
A charge / discharge timing determining unit that determines that it is the timing for the user of the electric vehicle to charge / discharge based on the difference between the reward amount and the decrease amount.
Have a,
The charge / discharge timing determining unit compares the purchase price of the battery mounted on the electric vehicle with the cumulative value of the reward amount, and when the purchase price of the battery is equal to or less than the cumulative value of the reward amount, the battery Decide that it is time to replace,
Decision device. Computer,
A means of obtaining information on the transaction price of electric power by charging and discharging the electric power system,
A means of obtaining the status of batteries installed in electric vehicles,
A means for calculating a reward amount obtained by a user of the electric vehicle by discharging from the battery based on the transaction price information.
A means for calculating the amount of decrease in the purchase price of the battery due to discharging from the battery based on the deterioration characteristics due to the use of the battery.
A means for determining the timing at which the user of the electric vehicle performs charging / discharging based on the difference between the reward amount and the reduced amount.
A means for comparing the purchase price of a battery mounted on the electric vehicle with the cumulative value of the reward amount, and if the purchase price of the battery is equal to or less than the cumulative value of the reward amount, it is determined that it is the battery replacement timing. ,
A program to function as.

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