Charge / discharge management device, charge / discharge management method, and program

Abstract

This charge / discharge management device comprising: an information acquisition unit that acquires schedule information relating to the movement of a user of an electric vehicle; a power consumption calculation unit that calculates a movement distance of the electric vehicle on the basis of the schedule information, and calculates, from the movement distance, a necessary power amount required to move the electric vehicle; and a charging schedule creation unit that creates, on the basis of the necessary power amount for each electric vehicle calculated by the power consumption calculation unit, a charging schedule for a plurality of electric vehicles which perform charging at the same time, such that the total charging power for the plurality of vehicles does not exceed a prescribed threshold value.

Description

[Technical Field]

[0001] The present invention relates to charge / discharge control of an EV. [Background technology]

[0002] The popularity of electric vehicles (EVs) has been remarkable in recent years, and many companies are considering introducing them. However, the relatively large amount of electricity required for charging makes the burden of electricity costs an issue. Furthermore, in order to supply the necessary power for charging, it is necessary to change the building's power receiving capacity (power supply equipment) and install additional power receiving equipment (transformers, switchboards, etc.), which poses a significant cost issue.

[0003] EV chargers consume a lot of power when multiple vehicles are connected. For example, normal charging (AC) requires 3kW to 6kW per vehicle, while rapid charging requires 10kW to 100kW, consuming more power than a building's air conditioning system. As a result, installing EV chargers in a typical commercial building places a heavy burden on the power grid, as the power receiving capacity is several hundred kW.

[0004] However, when considering the use of EVs on a commercial basis, it is more efficient to charge the EV outside of working hours (when the EV is parked after work has finished), so it is desirable to install a charger in the office and charge the EV between the end of work and the start of work.

[0005] Additionally, it is expected that the use of VRE (Variable Renewable Energy) to charge EVs will become a trend in recent years. However, because the amount of power that can be used with VRE is limited, it is necessary to determine the amount of charge for each EV appropriately based on power generation forecasts and mobility usage.

[0006] In addition, it is expected that EV batteries will be used in VPPs (Virtual Power Plants) for V2X (V2B (peak shaving for buildings) and V2G (contribution to grid stabilization)) using EV batteries, but it is necessary to maintain the amount of stored electricity that the EV will use for mobility in the first place, and it is necessary to appropriately determine the amount that can be discharged.

[0007] Conventional technologies include the technology disclosed in Non-Patent Document 1, but this technology predicts charging and discharging based on probability, making it difficult to respond to unusual plans (such as long-distance business trips). [Prior art documents] [Non-patent literature]

[0008] [Non-Patent Document 1] H. Kikusato, K. Mori, S. Yoshizawa, Y. Fujimoto, H. Asano, Y. Hayashi, A. Kawashima, S. Inagaki, and T. Suzuki, "Electric Vehicle Charge-Discharge Management for Utilization of Photovoltaic by Coordination between Home and Grid Energy Management Systems", IEEE Transactions on Smart Grid, 2018. https: / / ieeexplore.ieee.org / document / 8326541 Summary of the Invention [Problem to be solved by the invention]

[0009] As mentioned above, conventional technologies do not take into account the schedules of EV users, making it difficult to balance mobility use, VPP use, and the capacity of building power equipment.

[0010] The present invention has been made in consideration of the above points, and aims to provide a technology that enables charging of multiple EVs based on the schedules of EV users without exceeding the capacity of the power equipment. [Means for solving the problem]

[0011] According to the disclosed technology, there is provided an information acquisition unit that acquires schedule information related to the movement of a user of an electric vehicle; a power consumption calculation unit that calculates a travel distance of the electric vehicle based on the schedule information and calculates an amount of power required to travel the electric vehicle from the travel distance; a charging schedule creation unit that creates a charging schedule for a plurality of electric vehicles based on the amount of power required for each electric vehicle calculated by the power consumption calculation unit so that the total charging power of the plurality of electric vehicles that are simultaneously charged does not exceed a predetermined threshold; a notification unit that sends a message recommending the use of public transportation to users of electric vehicles who are unable to complete charging before their departure time; A charge / discharge management device is provided. [Effects of the Invention]

[0012] The disclosed technology makes it possible to charge multiple EVs based on the schedules of EV users without exceeding the capacity of the power equipment. [Brief explanation of the drawings]

[0013] [Figure 1] 1 is a diagram illustrating an overall configuration of a system according to an embodiment of the present invention. [Figure 2] FIG. 2 is a configuration diagram of a charge / discharge management device. [Figure 3] 4 is a flowchart illustrating the operation of the charge / discharge management device. [Figure 4] FIG. 10 is a diagram illustrating an example of a charging power schedule for each time period. [Figure 5] FIG. 2 is a diagram illustrating an example of a hardware configuration of a charge / discharge management device. DETAILED DESCRIPTION OF THE INVENTION

[0014] Hereinafter, an embodiment of the present invention (the present embodiment) will be described with reference to the drawings. The embodiment described below is merely an example, and the embodiment to which the present invention is applied is not limited to the following embodiment.

[0015] In the following explanation, SoC stands for State of charge, and is an index that indicates the remaining capacity of a storage battery. It is calculated as the remaining capacity / full charge capacity of the storage battery, and is also called the charging rate or state of charge.

[0016] Also, SoH is an abbreviation for State of health, and is also called the health level, and represents the percentage of the full charge capacity of the storage battery at the time of deterioration, assuming that the initial full charge capacity of the storage battery is 100%.

[0017] VRE stands for Variable Renewable Energy and refers to renewable energy sources such as solar power generation that have variable output.

[0018] (System configuration example) An example of the overall configuration of a system according to an embodiment of the present invention is shown in Fig. 1. As shown in Fig. 1, the system includes a task scheduler 200, a charge / discharge management device 100, EV chargers 10-1 to 10-n, and EVs 20-1 to 20-n.

[0019] The business scheduler 200 is an information system in which individuals and organizations input and share their own plans for activities, such as daily business schedules, meeting schedules, business trip and outing schedules, etc. In particular, in this embodiment, information on plans for EV users to use their EVs for business trips or outings is recorded.

[0020] The work scheduler 200 may be a system implemented by a physical computer connected to the charge / discharge management device 100 via a network, or may be a system on the cloud.

[0021] The charge / discharge management device 100 creates a charging schedule and controls the charging and discharging of each EV. Details will be described later. The charge / discharge management device 100 may also be a system implemented by a physical computer or a system on the cloud.

[0022] EV charger 10 charges EV 20. Note that EV charger 10 may also include a discharge function, and an EV charger 10 with a discharge function may be called an EV charger / discharger.

[0023] Each EV charger 10 is connected to the building's power distribution equipment (power receiving equipment) and receives power from the power distribution equipment. The building's power distribution equipment receives power from, for example, a commercial power source. Each EV charger 10 may also receive power from a renewable energy source, such as a solar power generation system installed in the building.

[0024] The EV 20 may be any type of electrically powered vehicle, but in this embodiment it is assumed to be an electric car.

[0025] Figure 1 shows an image of one EV charger corresponding to one EV, but this is just an example. For example, there may be fewer EV chargers than the number of EVs. Even in such cases, the charging schedule will ensure that each EV is charged to meet the demand as much as possible.

[0026] Also, while FIG. 1 shows a case where the EV and EV charger are separate, this is an example. An on-board charger installed in the EV may also be used. The on-board charger may be equipped with, for example, an AC / DC converter, converting AC power to DC to charge the storage battery. When an on-board charger is used, charging ON / OFF control and discharge control can be performed from the charge / discharge management device 100 in the same way as in the case of the EV charger described below.

[0027] (Configuration example of charge / discharge management device 100) 2 shows an example of the functional configuration of the charge / discharge management device 100. As shown in FIG. 2, the charge / discharge management device 100 includes an information acquisition unit 110, a power consumption calculation unit 120, a charge schedule creation unit 130, a charge / discharge control unit 140, a notification unit 150, a correction unit 160, and a storage unit 170.

[0028] The information acquisition unit 110 acquires schedule information from the operation scheduler 200 as information necessary for creating a charging schedule, and also acquires information on the SoC and other information related to the storage battery of each EV from each EV or each EV charger. The acquired information is stored in the storage unit 170.

[0029] The power consumption calculation unit 120 calculates the amount of power required for the EV to run based on schedule information of the EV user and the like.

[0030] The charging schedule creation unit 130 creates a charging schedule based on the amount of power consumed by each EV calculated by the power consumption calculation unit 120. The charging / discharging control unit 140 carries out charging or discharging by sending control signals to the EV charger 10 based on the charging schedule. The notification unit 150 notifies the user.

[0031] The correction unit 160 corrects the schedule information, the charge amount, etc. Note that the correction unit 160 may not perform the correction.

[0032] (Basic operation example) An example of the basic operation of the charge / discharge management device 100 having the above configuration will be described.

[0033] <Charging operation example> In order to accurately predict the amount of EV mobility usage, the information acquisition unit 110 extracts the time of EV usage, destination, etc. from the work scheduler 200, which records the schedules of employees who use EVs, and the power consumption calculation unit 120 calculates the amount of electricity required for EV movement.

[0034] The charging schedule creation unit 130 calculates the charging amount based on the amount of power required for each EV calculated by the power consumption calculation unit 120 and the remaining capacity of the storage battery, calculates the power used by the EV charger at each time, and creates a charging schedule so that the total amount of power used by multiple EVs being charged simultaneously does not exceed a threshold (e.g., the capacity of the power receiving equipment).

[0035] Furthermore, the charging schedule creation unit 130 may create a charging schedule in cooperation with a forecast of the demand for power in the building so that the demand in the entire building does not exceed the contracted power.

[0036] The charge / discharge control unit 140 charges the EV 20 by transmitting a control signal to the corresponding EV charger 10 according to the created charging schedule.

[0037] In this embodiment, since the target is charging multiple EVs, it is assumed that charging may not be completed in time due to insufficient capacity of the power receiving facility or VRE, etc. When the charging schedule creation unit 130 detects that charging for a certain user will not be completed in time during the creation of the charging schedule, it reports this to the notification unit 150, and the notification unit 150 sends an alert to the user, urging the user to change the schedule or charge at another charging station, etc.

[0038] Any technology may be used to send the alert. For example, the notification unit 150 may call the user's smartphone or send a message.

[0039] Furthermore, unnecessary use of an EV affects electricity costs and environmental loads. Therefore, for example, when the notification unit 150 detects a schedule for a destination where public transportation is available by referring to the storage unit 170, the notification unit 150 may transmit a message to the user urging them to travel by public transportation.

[0040] <Example of discharge operation> When V2X (building peak shaving (V2B) or grid stabilization (V2G)) is used while an EV is waiting in a building, for example, the charge / discharge control unit 140 determines the amount of discharge based on the EV use schedule and charging schedule stored in the memory unit 170, and instructs the EV charger 10 (with a discharge function) of the relevant EV 20 to discharge. As will be described later, discharging is performed by an EV with sufficient remaining capacity in its storage battery (an EV with remaining capacity that will not interfere with future use).

[0041] <Example of correction operation> The schedule information obtained from the task scheduler 200 is not necessarily accurate, and the amount of mobility usage (i.e., the amount of power used by an EV) varies depending on the user's characteristics (differences in driving style, etc.). To compensate for these uncertainties, the correction unit 160 corrects the schedule information.

[0042] For example, the correction unit 160 corrects the schedule information using the EV usage history (destination, travel distance, electricity cost) of each EV user, thereby increasing the accuracy of the amount of electricity required for mobility.

[0043] Specifically, for example, some EV users may engage in activities other than those registered in the business scheduler, so the correction unit 160 calculates the occurrence probability and movement amount of activities outside the schedule registered in the business scheduler by comparing each user's EV usage history with the schedule information registered in the business scheduler.

[0044] The correction unit 160 corrects the route distance when calculating the amount of power required for EV travel based on, for example, the probability of occurrence of unscheduled behavior and the amount of travel, so that it is longer than the actual distance. In other words, a distance margin is provided. The correction unit 160 may also correct the amount of power calculated by the power consumption calculation unit 120 based on the probability of occurrence of unscheduled behavior and the amount of travel. The correction unit 160 may also determine a margin for the charge amount calculated by the charging schedule creation unit 130 based on the probability of occurrence of unscheduled behavior and the amount of travel, and notify the margin to the charging schedule creation unit 130. The charging schedule creation unit 130 may then use the charge amount to which the margin has been added for creating the charging schedule.

[0045] Furthermore, when the correction unit 160 references the schedule information of the user and detects that a vacation or telecommuting application has already been made, it may instruct the charging schedule creation unit 130 to lower the priority of charging the user's EV.

[0046] In addition, if there is a high probability that the EV user's registered information in the business scheduler 200 and their EV usage behavior do not match, the correction unit 160 may lower the priority of charging and send an alert to the user from the notification unit 150.

[0047] (Detailed operation example) An example of the detailed operation of the charge / discharge management device 100 will be described below in accordance with the procedure of the flowchart in Fig. 3. As a premise for the following operation, it is assumed that, for example, schedule information (EV use plan information) for each EV user is stored in the operation scheduler 200. It is also assumed that the storage unit 170 of the charge / discharge management device 100 stores the EV use history of each user (travel route, travel time on the route, etc.).

[0048] First, the amount of electricity required for EV travel for business trips, etc., is calculated by S1 to S3. trav The details are as follows:

[0049] <s1> In S1, the information acquisition unit 110 of the charge / discharge management device 100 acquires EV usage plan information (schedule information) of the EV user from the business trip information recorded in the business scheduler 200.

[0050] The acquired usage plan information includes, for example, the destination of the business trip, the stopovers to be taken on the way to the destination, the departure time, the arrival time, the type of EV, etc. The acquired usage plan information is stored in the storage unit 170. Note that there may be cases where information on stopovers is not available.

[0051] <s2> The power consumption calculation unit 120 reads the user's EV usage plan information from the storage unit 170, and calculates (predicts) the EV's driving route based on the EV's current location, intermediate locations, and destination. Any method may be used to predict the driving route. For example, map data may be obtained from an external map information database to calculate the route, or a route prediction service may be used by accessing the website of an external route prediction application. The predicted route information may also include altitude information.

[0052] <s3> In S3, the power consumption calculation unit 120 calculates the amount of power P required for the EV to travel from the EV's travel route and the EV's electricity cost data. trav The electricity cost data for each vehicle type may be stored in advance in the storage unit 170, or may be acquired from an external server or the like by specifying the vehicle type of the EV.

[0053] Electricity consumption is the distance traveled per kWh or the amount of electricity consumed to travel 1 km, and the amount of electricity required to travel that route can be calculated from the distance of the route and the electricity consumption.

[0054] The calculation of the amount of power consumed by S1 to S3 is performed, for example, for each day for each user (each EV) who has a business trip scheduled for that day.

[0055] <s4> In S4, the charging schedule creation unit 130 calculates the amount of power that is insufficient for each EV compared to the amount of power required for travel calculated in S3, based on the remaining capacity of the EV's storage battery, to calculate the amount of charge that should be charged to the EV (target amount of charge). Specifically, the charging schedule creation unit 130 calculates the amount of charge for each EV using the following data (1) to (4) according to equation (1). In the following data, P bat1 , P batn The 1 and n in the above are indices of EV.

[0056] (1)P bat1 ~P batn : Rated capacity of each EV's storage battery (2)P EV1 ~P EVn : Remaining battery capacity of each EV [kWh] (3) P trav1 ~P travn : Amount of electricity required for each EV to travel [kWh] (4) P chg1 ~P chgn : Target charging amount required for each EV [kWh]

[0057]

number

[0058] Equation (1) expresses the amount of power that is insufficient for each EV compared to the required amount of power as the charging amount P chg If the remaining capacity is greater than the required amount of power, P chg is a negative value. As we will see later, this represents the amount of power that can be discharged.

[0059] <s5> In S5, the charging schedule creation unit 130 creates a charging schedule based on the charge amount of each EV calculated in S4 so that the allowable power of the facility is not exceeded when charging multiple EVs.

[0060] Here, for each EV, F(SoC EVn ,SoC EVn We will use a function written as (´)(t), so we will first explain this function.

[0061] SoC EVn represents the remaining capacity (charging rate) of each EV (here, for convenience, it is shown for "EVn"; the same applies below), and SoC EVn =P EVn / P batn SoC EVn ´ represents the remaining capacity (charging rate) of each EV after charging, and SoC EVn´ =(P EVn +P chgn ) / P batn is.

[0062] F(SoC EVn ,SoC EVn ´)(t) is the current (before charging) remaining EV battery capacity SoC for EVn (vehicle n). EVn EV charge amount after charging from SoC EVn´ It is a function that represents the charging power [kW] at time t until it reaches . Specifically, it represents the power [kW] used by each target charger.

[0063] Also, P chgn and F(SoC EVn ,SoC EVn ´)(t) have the relationship expressed by the following equation (2).

[0064]

number

[0065] Function F(SoC EVn ,SoC EVn For example, F(SoC EVn ,SoC EVn ´)(t) can be referred to. The length of time from the start of charging t1 to the end of charging t2 can be determined so that equation (2) holds.

[0066] The charging schedule creation unit 130 calculates a sequence P of the charging amounts of each EV obtained as a solution to the equation (1). chg1 ~P chgn The elements are sorted in order of earliest departure time. chg1´ ~P chgn´ The current (before charging) state of charge (remaining battery capacity) of each EV is P EV1´ ~P EVn´ Let's say.

[0067] The charging schedule creation unit 130 creates a P chg A charging schedule is created so that the battery is charged to the specified amount.

[0068] As long as the amount of power allowed for charging an EV is not exceeded, multiple EVs can be charged simultaneously. In this case, the EVs can be sorted in order of their departure times, and the EVs with the earliest departure times can be given priority for charging.

[0069] More specifically, the charging power value of all EVs that are simultaneously charging is set to a threshold P lim The number of charging vehicles m is determined for each time so that the number is less than or equal to the building's power receiving capacity (e.g., the power receiving capacity of the building, or the value obtained by subtracting the building's power demand from the power receiving capacity), and a charging schedule is created to charge the target EVs included in that number.

[0070] That is, at each time t, the total charging power of m units expressed by the following equation (3) is P lim Create a charging schedule to keep the value below this.

[0071]

number

[0072] In the example shown in Figure 4(c), by starting the charging of EV1 earlier than the charging of EV2, the times when the charging power of EV1 and EV2 is high are shifted, and even if the two vehicles are charged simultaneously, the total charging power is P lim The charging schedule is set so that it does not exceed this limit.

[0073] The charging schedule creation unit 130 creates a charging schedule for each day, for example, by the above-described process based on the business trip planned for that day. lim The time is set so that the charging completion time of the EV is before the departure time of the EV.

[0074] The charging schedule is expressed by, for example, the charging start time and charging completion time for each EV. The charging schedule creation unit 130 stores the created charging schedule in the storage unit 170.

[0075] In addition, the charging schedule creation unit 130 lim When the charging schedule is created so as not to exceed the charging time limit, if it is detected that an EV will not be able to complete charging before the departure time, the notification unit 150 reports this to the notification unit 150. The notification unit 150 sends an alert to the user of the EV and recommends that they go to another charging station or use public transportation.

[0076] In addition, when creating a charging schedule, the charging schedule creation unit 130 may create a schedule in which charging of an EV used by a specific user (such as an executive) is started with the highest priority, so as to prevent a situation in which charging cannot be completed before the departure time.

[0077] <s6> In S6, the charge / discharge control unit 140 reads a charging schedule from the storage unit 170 and executes charging by transmitting a charging control signal to the EV charger 10 connected to the corresponding EV20 according to the charging schedule.

[0078] When charging for a certain EV is completed, for example, the charging schedule creation unit 130 or the charge / discharge control unit 140 reports to the notification unit 150, and the notification unit 150 notifies the user of the EV that the charging is completed.

[0079] <Regarding the use of the power of the EV's battery> The charging schedule creation unit 130 calculates P using Equation (1) chg1 ~P chgn Among them, for an EV whose value becomes 0 or less (it may be less than 0), it is determined that it can be used for applications such as a VPP (Virtual Power Plant), and information indicating that the EV is available for VPP (information indicating that it can be used for discharging) is stored in the storage unit 170. Also, the VPP use targets the amount that becomes a negative value of P chg

[0080] Based on an instruction from, for example, the power system of a building, the charge / discharge control unit 140 instructs the EV charger 10 (with a discharging function) connected to an EV20 that can be used for VPP to discharge. For example, it discharges by the amount of the power of |P| of the EV. The discharged power may be used as the power of the building or may be supplied to an electric power company, etc. through power distribution facilities. chg

[0081] As described above, the present charge / discharge management device 100 implements control to enable both mobility use and VPP use through control.

[0082] (Example of hardware configuration) The charge / discharge management device 100 can be realized, for example, by causing a computer to execute a program. This computer may be a physical computer or a virtual machine on the cloud.

[0083] That is, the charge / discharge management device 100 can be realized by executing a program corresponding to the processing performed by the charge / discharge management device 100 using hardware resources such as a CPU and memory built into a computer. The program can be recorded on a computer-readable recording medium (such as a portable memory) and can be saved or distributed. The program can also be provided via a network such as the Internet or email.

[0084] Fig. 5 is a diagram showing an example of the hardware configuration of the computer. The computer in Fig. 5 includes a drive device 1000, an auxiliary storage device 1002, a memory device 1003, a CPU 1004, an interface device 1005, a display device 1006, an input device 1007, an output device 1008, and the like, all of which are interconnected by a bus BS.

[0085] A program for realizing processing on the computer is provided by a recording medium 1001 such as a CD-ROM or a memory card. When the recording medium 1001 storing the program is set in the drive device 1000, the program is installed from the recording medium 1001 to the auxiliary storage device 1002 via the drive device 1000. However, the program does not necessarily have to be installed from the recording medium 1001, but may be downloaded from another computer via a network. The auxiliary storage device 1002 stores the installed program as well as necessary files, data, etc.

[0086] The memory device 1003 reads and stores the program from the auxiliary storage device 1002 when an instruction to start the program is received. The CPU 1004 realizes the functions related to the light touch maintenance device 100 in accordance with the program stored in the memory device 1003. The interface device 1005 is used as an interface for connecting to a network. The display device 1006 displays a GUI (Graphical User Interface) or the like according to the program. The input device 1007 is composed of a keyboard, mouse, buttons, a touch panel, or the like, and is used to input various operation instructions. The output device 1008 outputs the results of calculations.

[0087] (Effects of the embodiment) The technology according to the present embodiment enables charging with an appropriate amount of charge without excessive charging beyond the mobility usage of the EV. Also, it is possible to charge multiple EVs with the amount of power required for business operations without excessively increasing the power equipment on the building side.

[0088] In addition, because the predicted value of EV mobility power usage is generated directly from work schedule data, the causal relationship is clear, and by utilizing usage history, it is expected that the accuracy of charging amounts will be improved.

[0089] In addition, by linking with VRE forecasts, it is expected that the renewable energy utilization rate for EV power will increase. Furthermore, since it is possible to manage EV charging amounts in accordance with requests for DR (Demand Response) and VPP at the stage of creating building users' schedules, the accuracy of EV use (including DR and VPP) for V2X will improve.

[0090] (Summary of the embodiment) This specification discloses at least the charge / discharge management device, charge / discharge management method, and program described in the following items. (Section 1) an information acquisition unit that acquires schedule information related to the movement of a user of an electric vehicle; a power consumption calculation unit that calculates a travel distance of the electric vehicle based on the schedule information and calculates an amount of power required to travel the electric vehicle from the travel distance; a charging schedule creation unit that creates a charging schedule for a plurality of electric vehicles based on the amount of power required for each electric vehicle calculated by the power consumption calculation unit so that the total charging power of the plurality of electric vehicles that are simultaneously charged does not exceed a predetermined threshold; A charge / discharge management device comprising: (Section 2) The charging schedule creation unit creates the charging schedule so that charging of the electric vehicle is completed before a departure time of the electric vehicle. 2. The charge / discharge management device according to claim 1. (Section 3) A notification unit that sends alerts to users of electric vehicles who are unable to complete charging before their departure time. 3. The charge / discharge management device according to claim 1 or 2, comprising: (Section 4) A correction unit that corrects the charge amount of a user's electric vehicle based on the user's usage history of the electric vehicle. 4. The charge / discharge management device according to any one of claims 1 to 3, comprising: (Section 5) The charging schedule creation unit determines, as an electric vehicle to be discharged, an electric vehicle for which a charge amount calculated from the required amount of power and the remaining capacity of the storage battery is a negative value. 5. A charge / discharge management device according to any one of claims 1 to 4. (Section 6) A charge / discharge management method executed by a computer, comprising: an information acquisition step of acquiring schedule information relating to the movement of a user of the electric vehicle; a power consumption calculation step of calculating a travel distance of the electric vehicle based on the schedule information and calculating an amount of power required for traveling the electric vehicle from the travel distance; a charging schedule creation step of creating a charging schedule for the plurality of electric vehicles based on the amount of power required for each electric vehicle calculated in the power consumption calculation step, so that the total charging power of the plurality of electric vehicles to be charged simultaneously does not exceed a predetermined threshold; A charge and discharge management method comprising: (Section 7) A program for causing a computer to function as each unit in the charge / discharge management device according to any one of claims 1 to 5.

[0091] Although the present embodiment has been described above, the present invention is not limited to such a specific embodiment, and various modifications and changes are possible within the scope of the gist of the present invention described in the claims. [Explanation of symbols]

[0092] 10-1~10-n EV charger 20-1~20-n EV 100 Charge / discharge management device 110 Information Acquisition Department 120 Power consumption calculation section 130 Charging schedule creation section 140 Charge / discharge control unit 150 Notification Department 160 Correction unit 170 Storage section 200 Business Scheduler 1000 Drive Device 1001 Recording media 1002 Auxiliary storage 1003 Memory device 1004 CPU 1005 Interface device 1006 Display device 1007 Input Device

Claims

1. an information acquisition unit that acquires schedule information related to the movement of a user of an electric vehicle; a power consumption calculation unit that calculates a travel distance of the electric vehicle based on the schedule information and calculates an amount of power required to travel the electric vehicle from the travel distance; a charging schedule creation unit that creates a charging schedule for a plurality of electric vehicles based on the amount of power required for each electric vehicle calculated by the power consumption calculation unit so that the total charging power of the plurality of electric vehicles that are simultaneously charged does not exceed a predetermined threshold; a notification unit that sends a message recommending the use of public transportation to users of electric vehicles who are unable to complete charging before their departure time; A charge / discharge management device comprising:

2. an information acquisition unit that acquires schedule information related to the movement of a user of an electric vehicle; a power consumption calculation unit that calculates a travel distance of the electric vehicle based on the schedule information and calculates an amount of power required to travel the electric vehicle from the travel distance; a charging schedule creation unit that creates a charging schedule for a plurality of electric vehicles based on the amount of power required for each electric vehicle calculated by the power consumption calculation unit so that the total charging power of the plurality of electric vehicles that are simultaneously charged does not exceed a predetermined threshold; a correction unit that calculates the occurrence probability and movement amount of an action outside the schedule by comparing the usage history of an electric vehicle of a certain user with schedule information of the user, and corrects the charge amount of the electric vehicle of the certain user based on the occurrence probability and movement amount of the action outside the schedule; A charge / discharge management device comprising:

3. The charging schedule creation unit creates the charging schedule so that charging of the electric vehicle is completed before a departure time of the electric vehicle. The charge / discharge management device according to claim 1 or 2.

4. The charging schedule creation unit determines, as an electric vehicle to be discharged, an electric vehicle for which a charge amount calculated from the required amount of power and the remaining capacity of the storage battery is a negative value. The charge / discharge management device according to any one of claims 1 to 3.

5. A charge / discharge management method executed by a computer, comprising: an information acquisition step of acquiring schedule information relating to the movement of a user of the electric vehicle; a power consumption calculation step of calculating a travel distance of the electric vehicle based on the schedule information and calculating an amount of power required for traveling the electric vehicle from the travel distance; a charging schedule creation step of creating a charging schedule for a plurality of electric vehicles based on the amount of power required for each electric vehicle calculated in the power consumption calculation step, so that the total charging power of the plurality of electric vehicles to be charged simultaneously does not exceed a predetermined threshold; a notification step of sending a message recommending the use of public transportation to users of electric vehicles who are unable to complete charging before their departure time; A charge and discharge management method comprising:

6. A charge / discharge management method executed by a computer, comprising: an information acquisition step of acquiring schedule information relating to the movement of a user of the electric vehicle; a power consumption calculation step of calculating a travel distance of the electric vehicle based on the schedule information and calculating an amount of power required for traveling the electric vehicle from the travel distance; a charging schedule creation step of creating a charging schedule for a plurality of electric vehicles based on the amount of power required for each electric vehicle calculated in the power consumption calculation step, so that the total charging power of the plurality of electric vehicles to be charged simultaneously does not exceed a predetermined threshold; a correction step of calculating the occurrence probability and movement amount of an action outside the schedule by comparing the usage history of an electric vehicle of a certain user with schedule information of the user, and correcting the charge amount of the electric vehicle of the certain user based on the occurrence probability and movement amount of the action outside the schedule; A charge and discharge management method comprising:

7. A program for causing a computer to function as each unit in the charge / discharge management device according to any one of claims 1 to 4.

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