Energy management system, energy management method, and central management device

Abstract

To provide an energy management system that can manage and effectively utilize information concerning charging / discharging of electric vehicles performed in a plurality of facilities, an energy management method, and a central management device.SOLUTION: An energy management system of an embodiment includes a central management device that is connected to a plurality of facilities that perform discharging and charging of an electric vehicle via a network and manages information concerning charging / discharging of the plurality of facilities. The central management device includes: a plan creation unit that based on first information concerning first charging / discharging performed between the electric vehicle and a predetermined facility among the plurality of facilities, creates a charging / discharging plan including a charging / discharging amount about second charging / discharging performed between the electric vehicle and another facility different from the predetermined facility among the plurality of facilities; and a transmission unit that transmits the charging / discharging plan to a portable terminal associated with the electric vehicle and the other facility.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] FIELD Embodiments of the present invention relate to an energy management system, an energy management method, and a central management device. [Background technology]

[0002] In recent years, electric vehicles (EVs) have become widespread, and it has become known to use batteries installed in EVs as storage batteries for facilities. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2020 / 161773 [Patent Document 2] Japanese Patent Application Laid-Open No. 2012-196028 Summary of the Invention [Problem to be solved by the invention]

[0004] However, while the conventional technology discloses the creation of a charge / discharge plan for efficient charging / discharging for each facility, it does not disclose the management of information relating to charging / discharging between facilities.

[0005] Therefore, the present invention has been made in consideration of the above circumstances, and aims to provide an energy management system, an energy management method, and a central management device that can manage and effectively utilize information regarding the charging and discharging of electric vehicles at multiple facilities. [Means for solving the problem]

[0006] An energy management system according to an embodiment includes a central management device that is connected via a network to a plurality of facilities where electric vehicles are discharged and charged, and that manages information regarding charging and discharging at the plurality of facilities. The central management device includes a plan creation unit that generates a charge / discharge plan including charge / discharge amounts for a second charge / discharge that is performed between the electric vehicle and a facility other than the specified facility among the plurality of facilities, based on first information regarding a first charge / discharge that is performed between the electric vehicle and a specified facility among the plurality of facilities, and a transmission unit that transmits the charge / discharge plan to a mobile terminal associated with the electric vehicle and the other facility. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing an outline of the overall configuration of an energy management system according to an embodiment. [Figure 2] FIG. 2 is a block diagram showing the overall configuration of the energy management system according to the embodiment. [Figure 3] FIG. 3 is a block diagram illustrating an example of the configuration of the central management device according to the embodiment. [Figure 4] FIG. 4 is a block diagram illustrating an example of the configuration of a home and an EV according to the embodiment. [Figure 5] FIG. 5 is a block diagram illustrating an example of the configuration of a facility and EVs according to the embodiment. [Figure 6] FIG. 6 is a block diagram illustrating an example of the configuration of the mobile terminal according to the embodiment. [Figure 7] FIG. 7 is a diagram illustrating an example of a user information table according to the embodiment. [Figure 8] FIG. 8 is a diagram illustrating an example of a facility information table according to the embodiment. [Figure 9] FIG. 9 is a diagram illustrating an example of a facility information table according to the embodiment. [Figure 10] FIG. 10 is a diagram illustrating an example of a charge / discharge history table according to the embodiment. [Figure 11] FIG. 11 is a diagram illustrating an example of a buying and selling history table according to the embodiment. [Figure 12]FIG. 12 is a diagram illustrating an example of a movement history table according to the embodiment. [Figure 13] FIG. 13 is a flowchart showing the charging process according to the embodiment. [Figure 14] FIG. 14 is a flowchart illustrating the process of storing electricity according to the embodiment. [Figure 15] FIG. 15 is a flowchart illustrating a process for listing candidate charging points according to the embodiment. [Figure 16] FIG. 16 is a diagram for explaining the updated contents of the table according to the embodiment. [Figure 17] FIG. 17 is a diagram illustrating a display example of the mobile terminal according to the embodiment. [Figure 18] FIG. 18 is a diagram illustrating a display example of charging of the mobile terminal according to the embodiment. [Figure 19] FIG. 19 is a diagram illustrating an example of a display of discharge on the mobile terminal according to the embodiment. [Figure 20] FIG. 20 is a diagram illustrating an example of a power transition in a facility according to an embodiment. [Figure 21] FIG. 21 is a flowchart illustrating an example of processing by the behavior modification unit according to the embodiment. [Figure 22] FIG. 22 is a flowchart illustrating an example of processing by the behavior modification unit according to the embodiment. [Figure 23] FIG. 23 is a flowchart illustrating an example of processing by the behavior modification unit according to the embodiment. [Figure 24] FIG. 24 is a flowchart illustrating an example of processing by the behavior modification unit according to the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an energy management system, an energy management method, and a central management device according to embodiments of the present invention will be described with reference to the drawings.

[0009] The energy management system 1 of this embodiment is connected via a network to a plurality of facilities where electrically powered mobile objects (hereinafter referred to as electric vehicles) are discharged and charged, and includes a central management device that manages information regarding charging and discharging at the plurality of facilities. The central management device includes, for example, a plan creation unit that generates a charge / discharge plan including charge / discharge amounts for a second charge / discharge to be performed between the electric vehicle and another facility other than the predetermined facility among the plurality of facilities, based on first information regarding a first charge / discharge performed between the electric vehicle and a predetermined facility among the plurality of facilities, and a transmission unit that transmits the charge / discharge plan to a mobile terminal associated with the electric vehicle and the other facilities.

[0010] According to this embodiment, for example, by managing information about charging and discharging at a plurality of facilities in a central management device, a charging and discharging plan including the amount of charging and discharging can be generated when a second charging and discharging is performed at a facility other than the predetermined facility, based on information about a first charging and discharging performed by the electric vehicle 6 at the predetermined facility. This allows the user to reduce the charging and discharging cost when performing the second charging and discharging, and to receive incentive points when charging and discharging. Furthermore, the facility can effectively utilize surplus electricity generated by charging the electric vehicle. Furthermore, if there is a power shortage at the facility, the power shortage at the facility can be resolved by discharging electricity from the electric vehicle to the facility. In this way, the overall electricity can be used efficiently by a plurality of facilities and electric vehicles.

[0011] Fig. 1 is a diagram showing an outline of the overall configuration of an energy management system 1 according to an embodiment. With reference to Fig. 1, an outline of the overall configuration of the energy management system 1 according to an embodiment will be described.

[0012] The energy management system 1 includes a central management device 10, a first facility 20, a second facility 30, a third facility 40, an electric vehicle 6, and a mobile terminal 5. The central management device 10 and each facility are connected to each other so that they can communicate with each other. Furthermore, each facility is supplied with power from a power grid 2.

[0013] In FIG. 1, the lines connecting the components indicate the main communication connection relationships, and components not connected by lines may also be communicatively connected to each other.

[0014] The central management device 10 acquires the amount of power charged and discharged by electric vehicles and information about the charging and discharging from each facility and user's mobile terminal 5, and manages the amount of electricity stored in storage batteries at each facility. It also manages information about the charging and discharging of each user's electric vehicle, as well as travel history. The central management device 10 is, for example, a server installed in a data center or private facility.

[0015] In particular, the central management device 10 manages information regarding charging and discharging performed between each of the multiple facilities and each electric vehicle, and generates and provides a charging and discharging plan to the user based on the information.The central management device 10 also generates and manages information regarding the amount of stored electricity.

[0016] Here, the amount of stored electricity is an index value calculated based on the history of charging and discharging between multiple facilities and each electric vehicle, and is managed for each user. For example, the amount of stored electricity can be calculated as a cumulative value based on the history of charging and discharging between multiple facilities and each electric vehicle, with discharging from the electric vehicle to the facility being a positive amount and charging from the facility to the electric vehicle being a negative amount.

[0017] The central management device 10 performs generation and management of information regarding the amount of stored power for each user, generation and management of charge and discharge plans to be provided to users, provision of incentive information to users, etc., thereby optimizing power operations throughout the energy management system 1. Note that the generation and management of information regarding the amount of stored power for each user, generation and management of charge and discharge plans to be provided to users, provision of incentive information to users, etc., performed by the central management device 10 will be described in detail later.

[0018] Next, a first facility 20, a second facility 30, and a third facility 40 that are communicatively connected to the central management device 10 will be described. The electric vehicle 6 can move to each facility and be charged or discharged. Information on the charging or discharging is managed by the central management device 10.

[0019] The first facility 20 is, for example, a residential house and the power facilities installed therein. The residential house may be, for example, a private residence or an apartment building. The first facility 20 includes the power facilities installed in the residential house, namely, a solar power generation facility 3, a storage battery 4, a mobile terminal 5, an electric vehicle 6, and an EV charger / discharger.

[0020] For example, in the first facility 20, the power generated by the solar power generation facility 3 can be stored in the storage battery 4. Furthermore, as shown by the arrow, for example, the power stored in the storage battery 4 can be used to charge the mobile terminal 5. Furthermore, the power stored in the storage battery 4 can also be used to charge the electric vehicle 6. That is, in the first facility 20, the renewable energy generated by the solar power generation facility 3 can be used at any time to charge the mobile terminal 5 and the electric vehicle 6. Furthermore, in the first facility 20, it is also possible to charge the mobile terminal 5 and the electric vehicle 6 using grid power.

[0021] In this embodiment, for the sake of concrete explanation, it is assumed that there is mainly one EV charger / discharger for personal use in the first facility 20. However, multiple EV chargers can be installed in the first facility 20 as needed.

[0022] The second facility 30 is, for example, a private facility and the power facilities installed therein. The private facility may be, for example, a business office, a factory, or a commercial facility. The second facility 30 is a power facility installed in the private facility, i.e., similar to the first facility 20, and includes, for example, a solar power generation facility 3, a storage battery 4, a mobile terminal 5, an electric vehicle 6, and an EV charger / discharger.

[0023] In the second facility 30, as shown by the arrow, for example, the power stored in the storage battery 4 can be used to charge the mobile terminal 5. The power stored in the storage battery 4 can also be used to charge the electric vehicle 6. On the other hand, for example, the power charged in the electric vehicle 6 can be discharged to the storage battery 4 and stored in the storage battery 4.

[0024] The third facility 40 is an example of a public facility and an electric power facility installed therein. The public facility may be, for example, a charging facility. The third facility 40 is an electric power facility installed in a public facility, i.e., has a similar configuration to the second facility 30, so a description thereof will be omitted. It is assumed that there will be multiple EV chargers installed in the second facility 30 and the third facility 40 because they will be used by multiple people.

[0025] It is assumed that each user has their own mobile terminal 5. The mobile terminal 5 is an information processing device that is communicably connected to the electric vehicle 6 owned by the user. The mobile terminal 5 is, for example, a smartphone, a tablet device, a mobile phone, a notebook PC, etc. Alternatively, it may be a car navigation system installed in the electric vehicle.

[0026] An app is installed on the mobile terminal 5, for example, that enables operations related to charging and discharging of the electric vehicle 6 associated with the mobile terminal 5. The user registers user information in the app, and when charging or discharging the electric vehicle 6, the user authenticates himself or herself on the app and inputs the device ID number of a charger / discharger provided at the facility where the electric vehicle 6 is charged or discharged. This allows the charger / discharger to charge or discharge the electric vehicle 6.

[0027] Electric vehicles6 are not limited to electric vehicles powered solely by electricity, but also include plug-in hybrid vehicles (PHVs) powered by electricity and fuel (gasoline, etc.), meaning that they refer to all vehicles that use electricity as at least part of their power source and can be charged externally.

[0028] Although only charging is shown in the first facility 20, similar to the second facility 30, it may be configured so that discharging from the battery of the electric vehicle 6 to the storage battery 4 is possible.

[0029] Fig. 2 is a block diagram showing the overall configuration of an energy management system 1 according to an embodiment. As shown in Fig. 2, the energy management system 1 includes a central management device 10, a first facility 20, a second facility 30, a third facility 40, an electric vehicle 6, and a mobile terminal 5. The central management device 10, the first facility 20, the second facility 30, and the third facility 40 are connected to each other via a network N so as to be able to communicate with each other. The electric vehicle 6 and the mobile terminal 5 can communicate with the central management device 10 and each facility.

[0030] The network N may be a wired or wireless network, or a hybrid network of these. The network N may include a relay device such as a wireless LAN access point. The network N may also include a fifth-generation (5G) wireless communication system or Wi-Fi (registered trademark).

[0031] That is, the central management device 10 periodically or at any timing acquires, from each of the first facility 20, the second facility 30, the third facility 40, the electric vehicle 6, and the mobile terminal 5, information on charging and discharging, indicating, for example, when, where, and how much discharging (charging) was performed, and information on the amount of stored electricity at each facility, via the network N. The central management device 10 also transmits various types of information to each of the first facility 20, the second facility 30, the third facility 40, the electric vehicle 6, and the mobile terminal 5 via the network N.

[0032] 3 is a block diagram showing an example of the configuration of the central management unit 10 according to the embodiment. As shown in FIG. 3, the central management unit 10 includes a communication unit 101, a receiving unit 102, a storage unit 120, a plan creation unit 121, a behavior modification unit 130, a distribution unit 140, an operation management unit 150, a transmission unit 103, and the like.

[0033] The communication unit 101 is capable of communicating with each facility, the electric vehicle 6, and the mobile terminal 5. The communication unit 101 sends received data to the receiving unit 102. The communication unit 101 also sends data received from the transmitting unit 103 to the outside. The transmitting unit 103 transmits information such as the charge / discharge plan to the mobile terminal associated with the electric vehicle and other facilities.

[0034] The receiving unit 102 is also referred to as a data receiving unit. The data received from the communication unit 101 is sent to the storage unit 120.

[0035] The storage unit 120 is also referred to as a facility / user data storage unit. Various types of table information are stored in the storage unit 120. For example, user information, facility information, charge / discharge history information, power buying / selling history information, and user movement history information are stored. The storage unit 120 outputs information to the plan creation unit 121, the behavior modification unit 130, the distribution unit 140, and the operation management unit 150.

[0036] The storage unit 120 is configured by, for example, a read-only memory (ROM), a random access memory (RAM), a hard disk drive (HDD), a solid state drive (SSD), etc., and stores various types of information.

[0037] The storage unit 120 acquires information about charging and discharging that the electric vehicle 6 has performed at any of the facilities, and stores the information for the following days and beyond.

[0038] Specifically, the user information may be, for example, registration data registered from the app, collected data, charge / discharge history information, etc. The facility information may be, for example, facility registration data input from each facility, data in the power generation amount storage unit and power storage amount storage unit of each facility, etc.

[0039] The plan creation unit 121 is also referred to as a charge / discharge plan creation unit. Data is input to the plan creation unit 121 via, for example, an app on the mobile terminal 5, and the plan creation unit 121 performs user authentication. The plan creation unit 121 also identifies a charger / discharger from the input data, and creates a charge / discharge plan based on the data input from the app and the data in the storage unit 120. The plan creation unit 121 delivers advertisements to the mobile terminal 5 while the electric vehicle 6 is being charged or discharged. The plan creation unit 121 is configured, for example, by a CPU (Central Processing Unit), and executes various types of arithmetic processing.

[0040] The plan creating unit 121 performs user authentication by, for example, comparing the user ID and password information stored in the storage unit 120 with the user ID and password information input from the application of the mobile terminal 5.

[0041] The plan creation unit 121 acquires information (first information) about charging and discharging that has been previously performed between the electric vehicle and a predetermined facility among the plurality of facilities (first charging and discharging). The plan creation unit 121 generates, based on the first information, a charging and discharging plan including a charging and discharging amount for charging and discharging (second charging and discharging) that will be performed after the first charging and discharging between the electric vehicle and another facility other than the predetermined facility among the plurality of facilities.

[0042] For example, the charge / discharge plan may calculate the charge / discharge amount for the second charge / discharge based on the first charge / discharge, or may set a fee for charging an electric vehicle from each facility, taking into account the amount of stored electricity at each facility. Another example may be setting a cost for the second charge / discharge based on the first information. Another example may be setting a cost for the second charge / discharge based on information about the amount of stored electricity.

[0043] Another example of the creation of a charge / discharge plan by the plan creation unit 121 is to set an incentive to be given to an electric vehicle user who discharges electricity from the electric vehicle to a facility. Another example of the creation of a charge / discharge plan by the plan creation unit 121 is to manage the use of renewable energy with priority when discharging electricity from a facility to an electric vehicle. For example, electricity stored in a storage battery using a solar power generation facility is discharged from the facility to the electric vehicle. If there is a shortage, grid power is used.

[0044] When charging or discharging is performed from the electric vehicle to any of a plurality of facilities, the plan creation unit 121 updates the information on the amount of stored power in the user information table as the charge / discharge history. Furthermore, for example, the plan creation unit 121 updates the amount of stored power in the storage battery of the facility.

[0045] When the electric vehicle is charged or discharged at any of a plurality of facilities, the plan creation unit 121 updates the total amount of stored electricity and the cumulative amount of stored electricity in the user information table. The update of the total amount of stored electricity and the cumulative amount of stored electricity is regarded as the user storing electricity.

[0046] For example, when an electric vehicle discharges electricity to one of a plurality of facilities, the total amount of electricity stored and the cumulative amount of electricity withdrawn in the user information table are both updated to a positive value. Also, when an electric vehicle charges electricity from one of a plurality of facilities, the total amount of electricity stored in the user information table is updated to a negative value and the cumulative amount withdrawn is updated to a positive value.

[0047] In this way, the plan creation unit 121 manages information regarding the charging and discharging of electricity between an electric vehicle and multiple facilities as power storage for each user, so that when a user charges or discharges at multiple facilities, the user can set the amount of charging and discharging based on the amount of power stored by the user.

[0048] Furthermore, the plan creation unit 121 delivers advertisements to the mobile terminal 5 while the electric vehicle 6 is being charged or discharged. For example, the advertisements are delivered via an app on the mobile terminal 5. The advertisements are also delivered to the display units of chargers and dischargers installed in the facilities and to the display units of the electric vehicle 6. The advertisement content is, for example, information about the facilities around the electric vehicle 6.

[0049] The instruction unit 122 is also referred to as a charge / discharge instruction unit. The instruction unit 122 sends instruction data related to charging / discharging to the charger / discharger control unit of each facility based on the charge / discharge plan created by the plan creation unit 121. In addition, the instruction unit 122 sends advertising data to be distributed to users who are charging / discharging the electric vehicle 6 to the charger / discharger control unit of each facility. The data from the instruction unit 122 is sent to the charger / discharger control unit of each facility via the transmission unit 103 and the communication unit 101.

[0050] Next, the behavior modification unit 130, also referred to as a behavior modification data creation unit, is a means for providing incentives, motivation, and encouragement to users' behavior by providing information, etc. The behavior modification unit 130 acquires the power supply and demand balance of each facility. Then, taking into account the acquired power demand balance for each facility, it creates data to encourage users to charge and discharge at specific facilities. The created data encouraging charging and discharging is displayed, for example, on a mobile terminal 5. For example, the timing of displaying the data on the mobile terminal 5 may be timed to coincide with the timing when a commercial facility attracts customers. As an example of the timing of the notification, a notification to charge the electric vehicle 6 in advance when the remaining battery level is below a predetermined level may be sent to prevent the electric vehicle from running out of power. Note that the functions of the behavior modification unit 130 may be executed by the plan creation unit 121. Furthermore, information from the behavior modification unit 130 may be transmitted via the plan creation unit 121.

[0051] The distribution unit 140 includes an information creation unit 141 and a notification unit 142. The distribution unit 140 creates data to be distributed to the mobile terminal 5. Specifically, the information creation unit 141 is also referred to as a smartphone / EV provision information creation unit. The notification unit 142 is also referred to as a smartphone / EV notification unit. Note that a smartphone refers to a smart phone, which is an example of a mobile terminal.

[0052] The information creation unit 141 receives data from the plan creation unit 121 or the behavior modification unit 130 and creates data to be distributed. The information creation unit 141 then sends the data to be distributed to the mobile terminal 5 from the notification unit 142.

[0053] The weather and traffic volume database 104, the electricity charge database 105, and the advertisement database (store discount information) 106 are sent to the plan creation unit 121 and the behavior modification unit 130 from outside the central management device 10.

[0054] Furthermore, the payment data 107 of the credit card company is sent and received by the plan creation unit 121 .

[0055] Next, the operation management unit 150 includes an editing unit 151, a display control unit 152, a display unit 153, a transmission control unit 154, and a transmission unit 155. The editing unit 151 is also referred to as an operation management data editing unit.

[0056] The editing unit 151 acquires, from the storage unit 120, CO2 emissions and power usage graphs for each base station, remaining battery charge, operating status of devices, and the like. The editing unit 151 edits the acquired data and sends it to the display control unit 152. The edited data is then displayed on the display unit 153. Similarly, the editing unit 151 acquires data to be sent by email from the storage unit 120 and sends it to the transmission control unit. The edited data is then sent by email by the transmission unit 155.

[0057] The display unit 153 is configured by, for example, an LCD (Liquid Crystal Display) or an OLED (Organic Light Emitting Diode), and displays various types of information.

[0058] Fig. 4 is a block diagram showing an example of the configuration of a home and an EV according to an embodiment. As shown in Fig. 4, when the electric vehicle 6 is connected to the charger / discharger 204 in the first facility 20, the charger / discharger 204 charges or discharges the battery 64 of the electric vehicle 6. The communication unit 201 in the first facility 20 and the central management device 10 are communicatively connected. This allows information relating to charging and discharging at the first facility 20 to be sent to the central management device 10. The communication unit 61 in the electric vehicle 6 and the central management device 10 are communicatively connected. This allows information relating to charging and discharging at the electric vehicle 6 to be sent to the central management device 10.

[0059] The first facility 20 will be described as an example of a power facility installed in a home. The first facility 20 includes a communication unit 201, a transmission / reception unit 202, a charger / discharger 204, a storage battery 206, a photovoltaic (PV) 209, and the like.

[0060] A photovoltaic power generation system is an example of the PV 209. The PV 209 generates renewable energy, and the amount of power generated is stored in a power generation amount storage unit 210 via a power generation amount control unit 208. The generated power is then stored in a storage battery 206, for example.

[0061] When charging or discharging the battery 64 of the electric vehicle 6, the charger / discharger 204 is connected to the electric vehicle 6, and the charger / discharger 204 is charged or discharged via the charger / discharger control unit 203. For example, when the electric vehicle 6 discharges, the charger / discharger 204 stores power in the storage battery 206 or the like. When the electric vehicle 6 is charged from the charger / discharger 204, power generated by the PV 209 or power stored in the storage battery 206 is charged from the charger / discharger 204. The charger / discharger 204 may include a display unit that displays on a screen when charging or discharging.

[0062] The storage battery 206 is charged via the storage battery control unit 205. At that time, the storage battery control unit 205 updates the information in the storage battery storage unit 207. The storage battery storage unit 207 stores information on whether the energy source is renewable or not. The electric vehicle 6 and the charger / discharger 204 may be connected via terminals provided on each unit, or may be connected in a non-contact manner.

[0063] The electric vehicle 6 includes a communication unit 61 , a navigation device 62 , a battery control unit 63 , and a battery 64 .

[0064] The navigation device 62 is mounted on, for example, the electric vehicle 6, and displays charge / discharge information and advertisements. A battery control unit 63 acquires the remaining charge of a battery 64. The battery 64 is charged externally. The remaining charge of the battery 64 can also be discharged to an external power facility or the like.

[0065] Fig. 5 is a block diagram showing an example of the configuration of the facility and EV according to the embodiment. As shown in Fig. 5, the battery of the electric vehicle 6 is charged and discharged by a charger / discharger 304 in the second facility 30. The communication unit 301 in the second facility 30 and the communication unit of the electric vehicle 6 are connected to the central management device 10 so as to be able to communicate with each other. The configuration of the electric vehicle 6 is the same as that described above and therefore will not be described here.

[0066] The second facility 30 will be described as an example of a power facility installed in a private facility. The second facility 30 includes a communication unit 301, a transceiver unit 302, a charger / discharger 304, a storage battery 306, a PV 309, and an input unit 311. The communication unit 301, the transceiver unit 302, the charger / discharger 304, the storage battery 306, and the PV 309 are similar to those shown in FIG. 4, and therefore description thereof will be omitted.

[0067] The input unit 311 is, for example, a means for a user to input information, such as a touch panel. An example is a keyboard of a personal computer. Facility information, attribute information of the facility, storage battery, charger / discharger, power usage history, advertisement data, etc. are input to the input unit 311. The information input to the input unit 311 is sent to the transmitting / receiving unit 302 via the acquisition unit 312. The acquisition unit 312 is also referred to as an input data acquisition unit.

[0068] The third facility 40 is an example of a power facility in a public facility. The second facility 30 and the third facility 40 have similar configurations, so a description thereof will be omitted.

[0069] Next, Fig. 6 is a block diagram showing an example of the configuration of a mobile terminal according to an embodiment. As shown in Fig. 6, the mobile terminal 5 includes a communication unit 51, a transmission unit 55, a reception unit 56, an input unit 53, a display unit 58, etc.

[0070] The communication unit 51 is connected to be able to communicate with the central management device 10. User information, user authentication information, and the battery capacity of the electric vehicle 6 are input to the input unit 53. In addition, the input unit 53 also receives input of a fixed amount that is a remaining amount that serves as a reference set by the user of the electric vehicle 6, charging / discharging operations, viewing operations for the charging / discharging history, and the like.

[0071] The measurement unit 52 is also referred to as a GPS measurement unit, for example. The measurement unit 52 acquires location information. The acquired location information is output to the input unit 53. The acquisition unit 54 is also referred to as an input data acquisition unit. The acquisition unit 54 acquires data input to the input unit 53 and sends it to the transmission unit 55. The transmission unit 55 is also referred to as an input data transmission unit. The transmission unit 55 transmits the data acquired from the acquisition unit 54 to the outside via the communication unit 51.

[0072] The receiving unit 56 is also referred to as a provided data receiving unit. The receiving unit 56 receives data from the communication unit 51, for example. The display control unit 57 receives the data from the receiving unit 56 and displays it on the display unit 58. For example, behavior change information, advertisements, etc. are displayed on the display unit 58. Examples of the display method include push notification and email.

[0073] 7 is a diagram illustrating an example of a user information table according to an embodiment. As illustrated in FIG. 7, the user information table includes, for example, user identification information, information on electric vehicles owned by the user, sales and purchases with other users, and coupon information.

[0074] The user's specific information includes the user's user ID, password, and credit card information. The information about the electric vehicle owned by the user includes the vehicle model, information about the battery, the amount of stored power in the battery, and incentive information.

[0075] The user's specific information is input by the user, for example, from an app on the mobile terminal 5. The trade with another user is input, for example, to the app on the mobile terminal 5 when charging / discharging from the electric vehicle 6 to a facility and the trade with another user is related.

[0076] For example, coupon information is input from a facility to an app on the mobile terminal 5. Information on the electric vehicle owned by the user is input by the user from the app on the mobile terminal 5. Furthermore, information on the remaining battery charge and the like is input from the plan creation unit 121 of the central management device 10 or the battery control unit 63 of the electric vehicle 6.

[0077] The total amount of renewable energy stored can be expressed as the cumulative amount of renewable energy stored minus the cumulative amount of renewable energy withdrawn. The total amount of non-renewable energy stored can be expressed as the cumulative amount of non-renewable energy stored minus the cumulative amount of non-renewable energy withdrawn. The total incentive can be expressed as the incentive for the cumulative amount of stored energy minus the incentive paid out for the cumulative amount of withdrawn.

[0078] For example, the plan creation unit 121 transmits incentive information to the user's mobile terminal regarding a second charge / discharge to be carried out between the electric vehicle and another facility among a plurality of facilities that is different from the specified facility, based on information regarding the user's stored energy amount.

[0079] For example, the incentive information is information that provides incentive points to a user via the mobile terminal 5 based on the amount of charging and discharging performed by the electric vehicle at a predetermined facility among the multiple facilities. Also, the incentive information is information that provides a discount to a user on the amount of charging and discharging performed by the electric vehicle at a facility other than the predetermined facility among the multiple facilities, based on information on the amount of charging and discharging performed by the electric vehicle at the predetermined facility among the multiple facilities.

[0080] Furthermore, for example, the plan creation unit 121 sets the rank of the incentive for the mobile terminal 5 according to the accumulated amount of charge and discharge that the electric vehicle 6 has performed at a plurality of facilities. For example, a higher incentive rank may be set for a user with a large accumulated amount of stored electricity. This can encourage users to charge and discharge electricity.

[0081] The information relating to charging and discharging is, for example, information relating to at least one of charging and discharging that the electric vehicle 6 performs in any of a plurality of facilities.

[0082] In addition, the information regarding the first charge / discharge includes information regarding the discharge or charging that the electric vehicle 6 performs at one of multiple facilities, the time of charging or discharging, the location of the facility where the electric vehicle 6 performs charging / discharging, and the amount of charge and discharge.

[0083] In addition, the information regarding the second charging and discharging includes the discharging or charging that the electric vehicle 6 performs at one of multiple facilities, the time of charging or discharging, the location of the facility where the electric vehicle 6 performs charging and discharging, the amount of charging and discharging, and incentive information for the user based on the information regarding the first charging and discharging.

[0084] The units for the items shown in Figure 7, such as EV battery capacity, fixed amount, remaining amount, remaining renewable energy amount, remaining non-renewable energy amount, total renewable and non-renewable energy storage amount, and cumulative renewable and non-renewable energy storage amount, are, for example, kWh. For renewable and non-renewable energy, both the facility ID and kWh may be shown. For example, km is used as the EV battery range. For example, pts are used as the unit. For example, % is used as the coupon discount rate. The facility to which the coupon applies is indicated by its ID number.

[0085] 8 and 9 are diagrams showing examples of a facility information table according to an embodiment. Fig. 8(a) shows facility attributes. Fig. 8(b) shows storage battery attributes. Fig. 9(a) shows charger / discharger attributes, Fig. 9(b) shows power usage history, and Fig. 9(c) shows solar power generation history.

[0086] As shown in Fig. 8(a), a facility ID is assigned to each facility. Also shown is location information of the facility, information on the storage batteries, chargers, and solar power generation equipment 3 installed in the facility, and information on advertisements. The table information shown in Fig. 8(a) is input from a personal computer or the like installed in each facility.

[0087] As shown in FIG. 8(b), information on the storage batteries installed in each facility, information on whether the stored energy is renewable energy or not, and information on the photovoltaic power generation equipment 3 are shown. The table information shown in FIG. 8(b) is input from a personal computer or the like installed in each facility. Alternatively, it is input from the storage battery control unit of each storage battery. Alternatively, it is input from the power generation control unit of each PV. In addition, the fees for renewable energy storage and non-renewable energy storage are, for example, fees per kWh.

[0088] As shown in Fig. 9(a), information on chargers and dischargers installed in each facility and the usage status of the chargers and dischargers are shown. The table information shown in Fig. 9(a) is input from a personal computer installed in each facility, or input from the charger and discharger control unit of each charger and discharger.

[0089] As shown in Fig. 9(b), the power consumption of each facility is shown in hourly and daily units. The table information shown in Fig. 9(b) is input from a personal computer or the like installed in each facility.

[0090] As shown in Figure 9(c), the amount of power generated by the photovoltaic power generation equipment at each facility is shown over time. The table information shown in Figure 9(c) is input from a personal computer or the like installed at each facility, or from the power generation control unit of each PV. For example, the amount of power generated is expressed in kWh per hour. Weather information is also shown, such as temperature and solar radiation.

[0091] 10 is a diagram illustrating an example of a charge / discharge history table according to an embodiment. The charge / discharge history table indicates the date and time when charging / discharging was performed, and information on the facility side and the user side.

[0092] Specifically, the facility side indicates the facility ID, the charger / discharger number used, and the battery number. The user side indicates the user ID, charging or storage, the amount of charge (kWh) or amount of storage (kWh), the type of electricity (renewable energy or not), the incentive (pt) for storage, and the fee (yen) for charging. These are input from the plan creation unit 121 of the central management device 10.

[0093] FIG. 11 is a diagram showing an example of a buying and selling history table according to an embodiment. As shown in FIG. 11, the table information in the electricity buying and selling history table is updated when users buy and sell electricity. The table information includes the date and time of the buying and selling, the facility ID, the user IDs and amount of electricity (kWh) of the seller and buyer, the type of electricity (renewable energy or not), the transaction fee (yen / kWh), the incentive (pt), and the like. This information is input from the plan creation unit 121 of the central management device 10. The transaction fee is, for example, the selling price.

[0094] 12 is a diagram showing an example of a movement history table according to an embodiment. As shown in FIG. 12, the date and time when the user moved and location information are shown. This information is input from the mobile terminal 5 or the navigation device 62 of the electric vehicle 6.

[0095] The location information is obtained, for example, from the location information of the measurement unit 52 of the user's mobile terminal 5 or the navigation device 62 of the electric vehicle 6. The location information may record, for example, a location where the mobile terminal 5 or the electric vehicle 6 has stayed for 60 minutes or more. Information about stores within a 50-meter radius of that location may be provided to the user as facility information data via the mobile terminal 5. The facility information data includes sale information and coupon information.

[0096] The facility information data advertised to the user may identify the facility where the user charges or discharges based on the charge / discharge history data, and advertisements related to the identified facility or stores in the vicinity of the facility may be provided to the user.

[0097] Fig. 13 is a flowchart showing the charging process according to the embodiment. As shown in Fig. 13, when the electric vehicle 6 owned by the user is charged at the second facility 30, the process up to the completion of charging of the electric vehicle 6 will be described using the user's mobile terminal 5, the plan creation unit 121 of the central management device 10, and the second facility 30 as examples.

[0098] Although the second facility 30 is shown as an example in FIG. 13, the first facility 20 or the third facility 40 may also be used.

[0099] When a user charges or discharges electric vehicle 6 from a power facility, the user logs in to the app on mobile terminal 5 to perform charging or discharging operations for electric vehicle 6 (step S1). Specifically, the user inputs a user ID and password into the app.

[0100] The plan creation unit 121 of the central management unit 10 performs user authentication based on whether the input information entered from the application matches the user ID and password registered in the user information table of the storage unit 120 (step S2). If authentication is successful, the process proceeds to step S3.

[0101] The plan creation unit 121 outputs the remaining EV battery charge registered in the user information table to the mobile terminal 5. At the same time, the plan creation unit 121 outputs to the mobile terminal 5 the difference between the EV battery charge and a fixed charge, which is a reference value for the EV battery charge set by the user (step S3). The remaining battery charge of the electric vehicle 6 is sent from the electric vehicle 6 to the storage unit 120 when the electric vehicle 6 is connected to a charger / discharger, for example. Alternatively, the remaining charge may be input by the user via the mobile terminal 5.

[0102] The user selects charging from the mobile terminal 5 (step S4). For example, if an output indicates that the remaining battery charge of the electric vehicle 6 is less than a predetermined amount, the user selects charging the electric vehicle 6 from the second facility 30. Note that charging or discharging can be selected. Step S4 takes the case where charging is selected as an example.

[0103] The plan creation unit 121 calculates the chargeable amount from the difference between the remaining amount of the EV battery in the user information table and the fixed amount (step S5).

[0104] The plan creation unit 121 sends information that charging of the electric vehicle 6 has been selected to the second facility 30 (step S6). For example, it may be possible to obtain from the location information of the mobile terminal 5 which facility the electric vehicle 6 is located at.

[0105] The second facility 30 sends facility information to the plan creation unit 121 of the central management device 10 (step S7). For example, the plan creation unit 121 may send information about which charger / discharger 304 in the second facility 30 the user's electric vehicle 6 is connected to. The plan creation unit 121 may also send updated information about the remaining capacity of the storage battery, the amount of renewable energy stored, and the amount of non-renewable energy stored from the attribute items of the storage battery shown in the facility information table of the storage unit 120. The facility information table may be updated as needed.

[0106] The plan creation unit 121 sends a list of charging candidates to the mobile terminal 5 (step S8). Specifically, the plan creation unit 121 lists charging candidates including the charge amount and fee to be used for charging based on information on the remaining capacity of the storage battery, the amount of renewable energy stored, and the amount of non-renewable energy stored from the attribute items of the storage battery shown in the facility information table, and information on the accumulated amount of stored power from the user information table. Then, the plan creation unit 121 sends the listed charging candidates to the mobile terminal 5.

[0107] The user determines a charging destination from the list of charging candidates on the mobile terminal 5 (step S9). For example, the list of charging candidates for the power stored in the second facility 30 may include power that the user has stored, power stored in the facility, power stored by other users, etc.

[0108] The plan creation unit 121 transmits instruction data from the instruction unit 122 to the charger / discharger control unit 303 of the charger / discharger 304 (step S10). Specifically, the instruction data is transmitted to instruct the charger / discharger control unit 303 to charge the electric vehicle 6 using electricity selected from the list.

[0109] The charger / discharger control unit 303 of the second facility 30 starts charging the electric vehicle 6. Also, the charger / discharger control unit 303 sends charging start information for the electric vehicle 6 to the mobile terminal 5 owned by the user (step S11).

[0110] The storage unit 120 acquires the user's movement history information from the mobile terminal 5 (step S12). Specifically, it acquires update information of the movement history. Note that the movement history information may be acquired as needed.

[0111] The plan creation unit 121 distributes advertisements for facilities included in the user's range of activity until charging of the electric vehicle 6 from the second facility 30 is completed (step S13). Specifically, the plan creation unit 121 identifies the user's range of activity from the date and time and location information in the user's movement history table in the storage unit 120. Furthermore, it acquires location information for the second facility 30, the third facility 40, commercial facilities, etc. from the facility attribute items in the facility information table. Then, advertisements for facilities included in the user's range of activity are distributed from multiple facilities. For example, the advertisements are distributed to the mobile terminal 5. The advertisements may also be distributed to the navigation device 62 of the electric vehicle 6.

[0112] The charger / discharger control unit 303 of the second facility 30 sends a message to the mobile terminal 5 owned by the user that charging of the electric vehicle 6 has been completed (step S14).

[0113] The user receives the information that charging is complete from the portable terminal 5, and payment processing is performed with the payment data 107 via the plan creation unit 121 (step S15). Specifically, the plan creation unit 121 performs payment processing with the credit card company based on the user's credit card information.

[0114] The storage unit 120 updates the table information (step S16). Specifically, the table information is updated by acquiring user information from the mobile terminal 5, and the table is updated by acquiring facility information from the facility. In addition, charge / discharge history information, electricity buying / selling history, etc. are updated.

[0115] The plan creation unit 121 updates the information about the amount of stored power in the user information table (step S17). Specifically, for example, because the electric vehicle has been charged from the facility, the information about the amount of power to be withdrawn from the accumulated amount of stored power in the user information table is updated. This completes the flow of charging the electric vehicle from the second facility 30.

[0116] For example, when the electric vehicle 6 charges, the plan creation unit 121 sets the cost of charging based on information about the discharge. Specifically, when the electric vehicle performs a second charge / discharge at a facility other than the predetermined facility among the multiple facilities, the plan creation unit 121 sets the cost of charging / discharging based on information about the first charge / discharge performed by the electric vehicle at the predetermined facility among the multiple facilities.

[0117] Next, discharging of the electric vehicle 6 to a facility will be described. Fig. 14 is a flowchart showing the power storage process according to the embodiment. As shown in Fig. 14, when the user's electric vehicle 6 discharges to a power facility, the process up to the completion of power storage will be described using the user's mobile terminal 5, the plan creation unit 121 of the central management device 10, and the third facility 40 as examples.

[0118] 14 shows the third facility 40 as an example, but it may be the first facility 20 or the second facility 30. Here, an example will be described in which the electric vehicle 6 is charged at the second facility 30 shown in FIG. 13 and then discharged from the electric vehicle 6 to the third facility 40 at a later date.

[0119] When the user discharges electricity from the electric vehicle 6 to a storage battery in the third facility 40, the user logs in to the app on the mobile terminal 5 to operate the charging and discharging of the electric vehicle 6 (step S21).

[0120] The plan creation unit 121 of the central management unit 10 performs user authentication based on whether the input information entered by the user matches the user ID and password registered in the user information table of the storage unit 120 (step S22). If authentication is successful, the process proceeds to step S23.

[0121] The plan creation unit 121 outputs the remaining EV battery capacity registered in the user information table to the mobile terminal 5. In addition, the plan creation unit 121 outputs the difference between the remaining EV battery capacity and a predetermined capacity, which is a reference value for the remaining EV battery capacity set by the user, to the mobile terminal 5 (step S23).

[0122] The user selects power storage from the portable terminal 5 (step S24). For example, if an output is received indicating that the remaining battery charge is greater than a predetermined amount, the user selects power storage. The remaining battery charge of the electric vehicle 6 is sent to the storage unit 120 from the electric vehicle 6, the portable terminal 5, the charger / discharger control unit, etc. when the electric vehicle 6 is connected to a charger / discharger, for example.

[0123] The plan creation unit 121 calculates the storable amount of electricity from the difference between the remaining amount of the EV battery in the user information table and the fixed amount (step S25).

[0124] The plan creation unit 121 sends information that power storage has been selected to the third facility 40 (step S26). For example, it may be possible to obtain from the location information of the mobile terminal 5 which facility the mobile terminal 5 is located at.

[0125] The third facility 40 sends facility information to the plan creation unit 121 of the central management device 10 (step S27). For example, the plan creation unit 121 may send information about which charger / discharger in the third facility 40 the user's electric vehicle 6 is connected to. In addition, the plan creation unit 121 may send updated information about the battery capacity, remaining battery charge, amount of renewable energy stored, amount of non-renewable energy stored, and amount of power generated by the solar power generation facility for the current month, based on the attribute items of the battery storage device shown in the facility information table in the storage unit 120. The facility information table may be updated as needed.

[0126] The plan creation unit 121 sends a list of power storage candidates to the mobile terminal 5 (step S28). Specifically, the plan creation unit 121 calculates the difference between the information on the storage battery capacity and the information on the remaining amount of stored power, the amount of renewable energy stored power, the amount of non-renewable energy stored power, and the amount of power generated by the solar power generation facility for the current month, from the attribute items of the power storage facility shown in the facility information table. Based on the calculated difference, the plan creation unit 121 lists power storage candidates, including the amount of power stored to be used for power storage, whether it is renewable energy or not, and incentives for power storage. Then, the listed power storage candidates are sent to the mobile terminal 5.

[0127] The user determines the power storage destination from the list of power storage candidates on the mobile terminal 5 (step S29).

[0128] The plan creation unit 121 transmits instruction data from the instruction unit 122 to the charger / discharger control unit of the charger / discharger (step S30). Specifically, the instruction data is transmitted so as to discharge using electricity selected from the list.

[0129] The charger / discharger control unit of the third facility 40 receives power from the electric vehicle 6, that is, starts storing power. Also, the charger / discharger control unit sends power storage start information to the mobile terminal 5 owned by the user (step S31).

[0130] The storage unit 120 acquires the movement history information from the mobile terminal 5 (step S32). Specifically, it acquires update information of the movement history. Note that the movement history information may be acquired as needed.

[0131] The plan creation unit 121 distributes advertisements for facilities included in the user's range of activity until power storage is completed (step S33). Specifically, the user's range of activity is identified from the date and time and location information in the user's movement history table in the storage unit 120. Furthermore, location information for the second facility 30, the third facility 40, commercial facilities, etc. is obtained from the facility attribute items in the facility information table. Then, advertisements for facilities included in the user's range of activity are distributed from multiple facilities. For example, the advertisements are distributed to the mobile terminal 5. They may also be distributed to the navigation device 62 of the electric vehicle 6.

[0132] The charger / discharger control unit of the third facility 40 sends a message from the electric vehicle 6 to the mobile terminal 5 owned by the user indicating that the power storage has been completed (step S34). Specifically, for example, by discharging power from the electric vehicle 6 to the third facility 40, the plan creation unit 121 updates the information in the user information table to indicate an increase in the total amount of power stored and the cumulative amount of power stored. This indicates that the user has stored power.

[0133] The storage unit 120 updates the table information (step S35). Specifically, the user information is updated from the mobile terminal 5, and the facility information is updated from the facility. In addition, the charge / discharge history information, the electricity buying and selling history, etc. are updated.

[0134] The plan creation unit 121 receives the information on the completion of the power discharge and storage, and gives incentive points or the like to the mobile terminal 5 (step S36). Up to this point, the flow of storing power from the electric vehicle has been completed.

[0135] In step S36, an example is given in which points are given to the user as an incentive, but after discharging from the electric vehicle 6 to the facility, when charging, the charging fee may be discounted based on the information about the discharge.

[0136] Note that the flows shown in Figures 13 and 14 are examples, and some steps may be omitted or the order of steps may be changed. For example, the timing of the payment process may be the timing when charging starts. Also, incentive provision may be omitted. Also, advertisement delivery may be omitted. Also, in Figure 14, explanations of the parts explained in Figure 13 are omitted.

[0137] Next, a detailed description will be given of the flow up to listing candidate charging stations to be used in step S8 shown in Fig. 13. Fig. 15 is a flowchart showing the process of listing candidate charging stations according to the embodiment.

[0138] 15, the contents to be listed may include, for example, the type of electricity, the amount of electricity, and the price. The type of electricity may be, for example, electricity from storage batteries within the facility (renewable energy or non-renewable energy), electricity from the grid, electricity previously stored by the user, electricity stored by other users, etc.

[0139] First, the case where stored electricity (amount of stored electricity) of the facility is used (S401) will be described.

[0140] The facility's stored electricity includes, for example, electricity stored in the facility's storage battery, and electricity stored by other users. The chargeable capacity of the EV battery of the connected electric vehicle 6 is compared with the remaining capacity of the candidate storage battery of the facility. If the remaining capacity of the storage battery is greater than the chargeable capacity of the EV battery, it is selected as a charging candidate. If the remaining capacity of the storage battery is less than the chargeable capacity of the EV battery, grid electricity is selected as a candidate (S402).

[0141] In this case, other users are given incentives when they discharge electricity from their electric vehicles 6 to the facility, and electricity is managed by the facility. The remaining charge of the storage battery is obtained from the facility information table. The chargeable amount of the EV battery is calculated from the fixed charge and remaining charge in the user information table.

[0142] The amount of charge to the battery of the electric vehicle 6 is calculated from the amount of electricity stored in the facility (S403). For example, if a storage battery installed in the facility is a candidate for charging the electric vehicle 6, the charge amount is set to the chargeable amount of the battery of the electric vehicle 6. Also, if grid electricity is a candidate for charging, the remaining amount of the storage battery and the grid electricity are combined to set the charge amount. Note that it is also possible to use only grid electricity.

[0143] A basic fee for charging the electric vehicle 6 from the facility is set (S404). For example, it is set based on the fee for renewable energy storage or the fee data for non-renewable energy storage in the attribute items of the storage battery in the facility information table. In addition, in the case of grid electricity, it is set based on an external system or the electricity fee database 105. For example, it is set at 15 yen per kWh.

[0144] Next, a case where the user uses the amount of electricity that he or she has saved in the past (S405) will be described.

[0145] The chargeable capacity of the EV battery is compared with the total amount of stored power that has been discharged to date by the user's electric vehicle 6. If the user's total stored power is greater than the chargeable capacity of the EV battery, the user's total stored power is selected as the charging candidate. When charging, renewable energy is used, and if this is insufficient, non-renewable energy is used (S406). If the user's total stored power is insufficient compared to the chargeable capacity of the EV battery, grid electricity or the like may be used. The user's total stored power is obtained from the total stored power in the user information table.

[0146] The amount of charge to the battery of the electric vehicle 6 is calculated from the total amount of stored power of the user (S407). For example, if the total amount of stored power of the user is a candidate for charging, charging is performed using renewable energy from the total amount of stored power of the user. Note that if there is a shortage of renewable energy, non-renewable energy is also used for charging.

[0147] A basic fee for charging the electric vehicle 6 is set (S408). For example, the electric vehicle 6 is charged at a rate that is a discount from the grid electricity rate when the user has already discharged electricity. Specifically, the rate is set to minus 2 yen per kWh, and the electric vehicle 6 is charged. For example, the rate is set to 12 yen per kWh.

[0148] Next, a case where another user purchases stored power (S409) will be described.

[0149] The chargeable capacity of the EV battery of the user's electric vehicle 6 is compared with the total amount of stored power that other users have discharged and stored up to now. If the total amount of stored power of other users is greater than the chargeable capacity of the user's EV battery, they are selected as a charging candidate. When charging, renewable energy is used, and if there is a shortage, non-renewable energy is used (S410). If the total amount of stored power of other users is insufficient compared to the chargeable capacity of the user's EV battery, charging may be performed using grid electricity, etc. The total amount of stored power of other users is obtained from the total amount of stored power in the user information table.

[0150] The amount of charge to the battery of the user's electric vehicle 6 is calculated from the total amount of electricity stored by other users (S411). For example, if the total amount of electricity stored by other users is a candidate for charging the user's electric vehicle 6, charging is performed from stored renewable energy. Also, if there is a shortage of renewable energy, non-renewable energy is also used for charging.

[0151] A basic fee for charging the user's electric vehicle 6 is set (S412). For example, a fee is set that is a discount from the grid electricity fee when other users discharge electricity to the facility. Specifically, a fee of minus 2 yen per kWh is set. For example, a fee of 13 yen per kWh is set.

[0152] A discount is applied to the charge for charging the electric vehicle 6 based on the user's accumulated amount of stored electricity (S413). For example, if the user's accumulated amount of stored electricity is equal to or greater than a reference value, a predetermined percentage is discounted from the charge. For example, a flat 3% discount is applied. Alternatively, the discount rate may be changed depending on the accumulated amount of stored electricity. This creates a list of the type of electricity, the amount of charge, and the charge when charging the electric vehicle 6 using the facility's stored electricity.

[0153] Although the listing of charging destinations has been described in FIG. 15, the same applies to the listing of power storage candidates in step S28 shown in FIG.

[0154] For example, when the electric vehicle 6 is to be charged, the plan creation unit 121 transmits to the mobile terminal information that allows the user to select either a cost based on information relating to the amount of stored energy of the user associated with the electric vehicle or a cost based on information relating to the amount of stored energy of another user associated with another electric vehicle.

[0155] Furthermore, for example, when an electric vehicle is charged at another facility, the plan creation unit 121 transmits to the other facility a charge / discharge plan that gives priority to the use of renewable energy.

[0156] Furthermore, for example, when the electric vehicle discharges electricity at one of a plurality of facilities, the plan creation unit 121 transmits to the mobile terminal a charge / discharge plan including information for selecting whether to sell at least a portion of the electric vehicle's stored electricity to one of the plurality of facilities or to another user.

[0157] 16 is a diagram for explaining the contents of table updates in the embodiment, showing the contents of table updates performed in step S16 in FIG. 13 and step S35 in FIG.

[0158] 16(a), after the charging process, the data in each table in the storage unit 120 is updated. The tables to be updated include, for example, user information, facility information, charge / discharge history, and electricity buying / selling history.

[0159] The user information table is updated with information on the remaining charge of the EV battery, the remaining renewable energy amount, the remaining non-renewable energy amount, and the cumulative withdrawal amount, for example, after charging the electric vehicle 6. The cumulative withdrawal amount is updated when the user himself / herself discharges electricity that he / she has stored in advance to the electric vehicle 6.

[0160] For example, after charging the electric vehicle 6, the facility information table is updated with the remaining battery charge, the amount of renewable energy stored, the amount of non-renewable energy stored, and the usage status of the charger / discharger. One row is added to all items in the charge / discharge history table. One row is added to all items in the electricity buying and selling history when a user purchases electricity stored by another user.

[0161] 16(b), after the power storage process in which the electric vehicle 6 discharges, the data in each table of the storage unit 120 is updated. The tables to be updated include, for example, user information, facility information, and charge / discharge history.

[0162] For example, after the electric vehicle 6 has discharged and stored electricity, the user information table updates information on the remaining amount of the EV battery, the remaining amount of renewable energy, the remaining amount of non-renewable energy, the total amount of stored electricity, the total incentive, and the cumulative amount of stored electricity.

[0163] For example, after the electric vehicle 6 has discharged and stored electricity, the facility information table updates the remaining battery charge, the amount of renewable energy stored electricity, the amount of non-renewable energy stored electricity, and the usage status of the charger / discharger. One row is added for each item in the charge / discharge history table.

[0164] 17A and 17B are diagrams showing examples of the display of a mobile terminal according to an embodiment. As shown in Fig. 17A, a menu screen of the application is displayed on the display unit of the mobile terminal 5. The menu screen displays a selection screen for EV charging and power storage operations or user information registration.

[0165] Figure 17(b) shows the case where user information registration is selected. On the user information registration screen, user information can be registered by entering the user's name, user ID, password, email address, credit card information, EV model, EV battery capacity, and EV battery capacity.

[0166] Figure 17(c) shows the case where the EV charging / storage operation is selected. On the input screen (charging / discharging), 1 indicates that the charger connector should be connected to the vehicle. 2 indicates that a user ID and password should be entered for user authentication. 3 indicates that the charger / discharger number should be entered. 4 indicates that charging or storage should be selected.

[0167] For example, you can choose to charge to a fixed amount, store to a fixed amount, or fully charge. 5 shows that you can choose the electricity you want to use. For example, you can choose between renewable energy electricity (PV) or grid electricity.

[0168] Fig. 18 is a diagram showing an example of a display of charging on a mobile terminal when charging the electric vehicle 6 from a facility in the embodiment. It is an example of a screen that is displayed when charging is selected on the input screen of Fig. 17. Fig. 19 is a diagram showing an example of a display of discharging on a mobile terminal when discharging is performed from the electric vehicle 6 to a facility in the embodiment. It is an example of a screen that is displayed when storage is selected on the input screen of Fig. 17.

[0169] First, we will explain the example of the charging display shown in Figure 18. As shown in Figure 18(a), when charging is selected, a confirmation screen (charging) is displayed. On the confirmation screen (charging), the amount of charge is displayed in 1. The selection result of the electricity to be used is displayed in 2. For example, it may be renewable energy electricity within the facility, electricity stored by the user, or electricity stored by other users. The numbers and installation locations of the connected chargers / dischargers are displayed on a map or the like in 3. The presence or absence of available coupons is displayed in 4.

[0170] After checking these and pressing Start Charging, the charging screen shown in Figure 18(b) will be displayed. Advertisements will be displayed while charging is in progress. It may also be possible to obtain coupons by viewing the advertisements. Charging can also be stopped while in progress.

[0171] Next, an example of the display of power storage shown in Fig. 19 will be described. As shown in Fig. 19(a), when power storage is selected, a confirmation screen (power storage) is displayed. On the confirmation screen (power storage), 1 displays the amount of power that can be stored. 2 displays the selection result of the electricity to be stored. For example, renewable energy electricity, or renewable energy electricity and grid electricity, etc. 3 displays the option of whether to sell the stored electricity to other users. 4 displays the number and installation location of the connected charger / discharger on a map, etc. 5 indicates whether there are any available coupons.

[0172] After checking these and pressing Start, the power storage screen shown in Figure 19(b) will be displayed. At this time, the electric vehicle 6 will begin discharging power to the facility. The user will be informed that power is being stored. Advertisements will be displayed while power is being stored. It may also be possible to allow coupons to be obtained by viewing advertisements. It is also possible to stop power storage while it is in progress.

[0173] Fig. 20 is a diagram illustrating an example of a power transition in a facility according to an embodiment. Fig. 20 shows, for example, a power transition in one day in one facility. Specifically, it shows the amount of power generated, the amount of power consumed, and surplus power.

[0174] As shown in Figures 20(a) and 20(b), the horizontal axis represents time t and the vertical axis represents power. The time is taken as an example from midnight to 11pm. P1 and P2 represent the amount of power generated. For example, power generation by a solar power generation facility is taken as an example. D1 and D2 represent power consumption (total demand). G1 and G2 are taken as an example of surplus power.

[0175] Fig. 20(a) shows an example where the amount of solar power generation is large and surplus power is generated, while Fig. 20(b) shows an example where the amount of solar power generation is small and the remaining amount of stored power is also small.

[0176] In Figure 20(a), the peak of P1 is assumed to be 12 noon on a sunny day. The surplus power G1 is calculated from the power generation amount P1 and the power consumption D1. The portion of the surplus power G1 used for storage is assumed to be a2. The surplus power a1 obtained by subtracting the storage portion a2 from the surplus power G1 can be reduced by encouraging users who own electric vehicles 6 to change their behavior and charge their EVs. For example, the peak value of the power generation amount P1 is assumed to be 200 kWh.

[0177] In Figure 20(b), the peak of P2 is assumed to be 12 noon. The surplus power G2 is calculated from the power generation amount P2 and the power consumption D2. Since the power generation amount P2 is less than the power consumption D2, it is shown that there is almost no surplus power G2. In this case, the remaining amount of stored power can be secured by encouraging users who own electric vehicles 6 to change their behavior and discharge their EVs. For example, the peak value of the power generation amount P2 is assumed to be 10 kWh. Furthermore, the peak value of the power consumption D2 is assumed to be 40 kWh.

[0178] 21 is a flowchart illustrating an example of processing by the behavior modification unit 130 according to the embodiment. The flow will be described below, in which surplus power in a facility is reduced by providing the user with information on charging and discharging based on information on the amount of power generated and stored in the facility.

[0179] As shown in Figure 21, the behavior modification unit 130 determines whether it is a fixed time (step S41). For example, it determines whether it is a fixed time such as 0:00 AM or 1:00 AM. If it is a fixed time (step S41: Yes), the behavior modification unit 130 determines whether facility data is stored in the memory unit 120 (step S42).

[0180] If the facility data is stored (step S42: Yes), the behavior modification unit 130 compares the amount of power generated and the amount of power consumed by the facility to determine whether the amount of power generated is large (step S43). Specifically, the behavior modification unit 130 obtains the amount of power generated by the facility from the information on the amount of solar power generated in the facility information table in the storage unit 120, and the amount of power consumed by the facility from the information on the amount of power consumed in the facility information table. For example, the behavior modification unit 130 compares the information on the amount of solar power generated in the past with the information on the amount of power consumed, and determines whether there is a time period in which the amount of power generated is greater than the amount of power consumed.

[0181] If the amount of power generation is greater than the amount of power consumption (step S43: Yes), there is a high possibility that surplus power will be generated, and so the behavior modification unit 130 distributes information to the user's mobile terminal 5 or the like encouraging the user to charge the electric vehicle 6 at the facility (step S44). For example, information about a charging fee that is cheaper than usual may be distributed. The information may also include the location of the facility and the time period when the charging fee is cheaper. The distribution destination is taken as an example to facility users, but may also be all users whose user information about electric vehicles 6 is registered.

[0182] If the amount of power generation is less than the amount of power consumption (step S43: No), the behavior modification unit 130 determines whether the amount of power consumption is greater than the amount of power generation (step S45). If the amount of power consumption is greater than the amount of power generation (step S45: Yes), the behavior modification unit 130 distributes information encouraging energy conservation to users who have used the facility and whose remaining battery charge in the electric vehicle 6 is greater than the predetermined amount (step S46). For example, the target users are those whose remaining EV renewable energy charge in the user information table is greater than the predetermined amount and who have a charge / discharge history at the facility in the charge / discharge history table. Information about time periods when there is a possibility of a power generation shortage and information about a higher-than-normal incentive are distributed to the users.

[0183] Next, the behavior modification unit 130 determines whether the available capacity of the storage battery is greater than the amount of power generated on that day (step S47). For example, the available capacity of the storage battery is calculated by subtracting the remaining amount from the capacity of the storage battery.

[0184] If the remaining battery capacity is greater than the amount of power generated on that day (step S47: Yes), the behavior modification unit 130 distributes information encouraging users who have used the facility that the remaining battery capacity of the electric vehicle 6 is greater than a predetermined amount and encourages them to save power (step S48). For example, this information is distributed when the remaining battery capacity is less than a certain value and the amount of power generated on that day alone is not enough to fully charge the battery. This ends the process. The process also ends if the answer to each step is No.

[0185] For example, the plan creation unit 121 distributes advertisements such as facility information to the mobile terminal 5 based on the history of movement and charging / discharging of the electric vehicle 6. Also, for example, based on information regarding the amount of stored power, the plan creation unit 121 transmits an advertisement regarding one of a plurality of facilities to the mobile terminal. The plan creation unit 121 selects the other facility based on the power storage status of each of the plurality of facilities. Also, for example, the plan creation unit 121 selects the other facility based on the power storage status of each of the plurality of facilities.

[0186] Furthermore, for example, the plan creation unit acquires the amount of stored electricity at each of a plurality of facilities, and if there is a facility with a stored electricity amount greater than a predetermined amount, selects another facility for charging electric vehicles from the facility with a stored electricity amount greater than the predetermined amount, and if there is a facility with a stored electricity amount less than the predetermined amount, selects another facility for discharging electricity from electric vehicles to the facility with a stored electricity amount less than the predetermined amount.

[0187] The system may further include a behavior modification unit 130 that distributes facility information to the mobile terminal 5, and the behavior modification unit 130 acquires the amount of stored electricity at multiple facilities and distributes information regarding charging and discharging at the facilities to the mobile terminal 5.

[0188] Furthermore, for example, the behavior modification unit 130 acquires the amount of stored power at multiple facilities, and if the amount of stored power is greater than a predetermined amount, delivers discount information regarding charging at the facility to the mobile terminal, and if the amount of stored power is less than the predetermined amount, delivers discount information regarding discharging at the facility to the mobile terminal. The amount of stored power is, for example, the remaining amount of storage battery in the facility. The predetermined amount is, for example, whether or not there is remaining amount of stored power.

[0189] Note that the behavior modification unit 130 determines whether or not it is a fixed time in step S41, but this is not limiting. For example, the behavior modification unit 130 may make a determination in step S41 based on whether or not the user has logged in to an app for performing charging / discharging operations on the electric vehicle 6. That is, the behavior modification unit 130 may make a determination based on whether or not the user has logged in at steps S1 and S21 in Figures 13 and 14. Furthermore, information may be delivered to the mobile terminal at a predetermined timing (for example, when a list of charging options is created).

[0190] Fig. 22 is a flowchart showing an example of processing by the behavior modification unit 130 according to the embodiment. For example, when a commercial facility wishes to attract customers, Fig. 22 shows how the charging and discharging fee is changed according to the time period during which the facility wishes to attract customers. In addition, the delivery of advertisements at designated advertisement delivery dates and times will be described.

[0191] As shown in Figure 22, the behavior modification unit 130 determines whether it is a fixed time (step S51). For example, it determines whether it is a fixed time such as 0:00 AM or 1:00 AM. If it is a fixed time (step S51: Yes), it determines whether facility data is stored in the memory unit 120 (step S52).

[0192] If facility data is stored (step S52: Yes), the behavior modification unit 130 determines whether the facility data includes an advertisement that is specified to be distributed today (step S53).

[0193] If there is an advertisement designated for distribution today (step S53: Yes), the behavior modification unit 130 distributes the advertisement and discount information on the charging and discharging fees of the facility (step S54). For example, the discount information may be a coupon such as 10% off. The distribution destination may be, for example, the mobile terminal 5 or the electric vehicle 6.

[0194] Finally, when the behavior modification unit 130 acquires information that the user has received a coupon via the mobile terminal 5 or the like, it updates the coupon information in the user information table to indicate that the user has received the coupon (step S55). This ends the process. The process also ends if the answer is No in each step.

[0195] For example, when a user searches for candidate facilities for storing electricity on a mobile terminal while out and about as shown in Fig. 14, information such as coupons and sale information, charging information at a lower rate than a predetermined rate, and discharging information at a higher rate than a predetermined rate may be delivered along with candidate commercial facilities at the timing of step S28 in Fig. 14. In this way, for example, the user may be attracted by the higher discharging rate and decide to go to a commercial facility, which may lead to a behavioral change that benefits the commercial facility, such as shopping at the commercial facility.

[0196] On the other hand, when the behavior modification unit 130 determines that the amount of stored renewable energy to supply to the load on the facility side (electricity consumed by the facility) is less than a predetermined amount, information such as sale information and discount coupons for shopping may be provided to users of electric vehicles whose amount of stored renewable energy is equal to or greater than a predetermined value, thereby encouraging behavior modification to discharge to the facility. By doing so, the facility side can store renewable energy in the storage battery even when there is a shortage of renewable energy, and can supply power from the storage battery to the load by renewable energy.

[0197] Fig. 23 is a flowchart illustrating an example of processing by the behavior modification unit 130 according to the embodiment. Fig. 23 illustrates that, for example, when providing information to a user based on the usage status of a charger / discharger, information about charging and discharging is distributed taking into account the time slot when the charger / discharger is available and an estimated stay time based on the user's charging and discharging history.

[0198] As shown in Figure 23, the behavior modification unit 130 determines whether it is the hour on the hour (step S61). For example, the determination is made once every hour. If it is the hour on the hour (step S61: Yes), the behavior modification unit 130 determines whether facility data is stored in the storage unit 120 (step S62).

[0199] If facility data is stored (step S62: Yes), the behavior modification unit 130 determines from the facility data whether there is an available charger / discharger (step S63). If there is an available charger / discharger (step S63: Yes), the behavior modification unit 130 determines from the charge / discharge history table whether there is a user who has previously charged or discharged during the same time period (step S64).

[0200] If there is a user who has previously charged or discharged during the same time period (step S64: Yes), the behavior modification unit 130 notifies the mobile terminal 5 of the user that there is free space in the charger or discharger at the facility (step S65). This ends the process. The process also ends if the answer is No at each step.

[0201] Fig. 24 is a flowchart showing an example of processing by the behavior modification unit 130 according to the embodiment. Fig. 24 explains that, for example, when providing information to a user to prevent a power shortage in the electric vehicle 6, an expected driving distance is estimated based on the driving history (such as location information in the movement history) and a recommended amount of power storage is delivered.

[0202] 24, the behavior modification unit 130 determines whether it is a fixed time (step S71). For example, it determines whether it is a fixed time such as 0:00 AM or 1:00 AM. If it is a fixed time (step S71: Yes), it determines whether there is data in the user's movement history table in the memory unit 120 (step S72).

[0203] If there is data in the user's movement history table (step S72: Yes), the behavior modification unit 130 calculates the expected mileage (step S73). Specifically, the behavior modification unit 130 acquires the charge / discharge history table and identifies the date and time of the next charge from the user's charging date and time. Then, for example, the behavior modification unit 130 calculates the mileage from the charging date and time to the next charging date and time for each charging count from the user's movement history table. The median of the calculated values ​​is calculated as the expected mileage.

[0204] Next, the behavior modification unit 130 calculates the ratio of the calculated average predicted driving distance to the EV's cruising range (kWh) in the user information table, and then calculates the recommended stationary amount by multiplying the battery capacity by the ratio (step S74).

[0205] The behavior modification unit 130 then calculates the recommended amount of power stored based on the difference between the remaining battery charge of the EV and the calculated recommended amount of power stored (step S75). The calculated predicted mileage, recommended amount of power stored, and recommended amount of power stored are delivered to the user's mobile terminal 5 or the like (step S76). This ends the process. The process also ends if the answer at each step is No.

[0206] As shown in Fig. 15, it has been explained that when a user charges an electric vehicle 6, the user can purchase electricity from another user via a facility. As a variation, it will be explained that when a user discharges electricity from the electric vehicle 6 to a facility, the user can choose to sell the electricity to another user. As an example, it has been explained that when a user discharges electricity from the electric vehicle 6 to a facility, points are awarded as an incentive, but instead of receiving an incentive, the user can also choose to sell the discharged electricity to another user.

[0207] The programs executed by the central management device 10 and the mobile terminal 5 of this embodiment are provided as files in an installable or executable format recorded on a computer-readable recording medium such as a CD-ROM, a flexible disk (FD), a CD-R, or a DVD (Digital Versatile Disk).

[0208] The program may also be configured to be stored on a computer connected to a network such as the Internet and provided by being downloaded via the network, or to be provided or distributed via a network such as the Internet, or to be provided by being pre-installed in a ROM or the like.

[0209] The program is modularly structured to include each part in the processing unit, and in actual hardware, the CPU reads the program from the storage medium and executes it, causing each part to be loaded onto the main memory and generated on the main memory.

[0210] According to at least one of the above-described embodiments of the energy management system, The system includes a central management device that is connected via a network to a plurality of facilities where electric vehicles are discharged and charged, and that manages information regarding charging and discharging at the plurality of facilities. The central management device includes a plan creation unit that generates a charge / discharge plan including charge / discharge amounts for a second charge / discharge to be performed between the electric vehicle and another facility among the plurality of facilities that is different from the specified facility, based on first information regarding a first charge / discharge performed between the electric vehicle and a specified facility among the plurality of facilities, and a transmission unit that transmits the charge / discharge plan to a mobile terminal associated with the electric vehicle and the other facility.

[0211] As a result, because the central management device manages information regarding charging and discharging at multiple facilities, it is possible to generate a charging and discharging plan including the amount of charging and discharging for the second charging and discharging based on information regarding charging and discharging of the electric vehicle at multiple facilities. Therefore, for example, even if a user charges or discharges an electric vehicle from a facility and then charges or discharges the electric vehicle from another facility, the amount of charging and discharging can be calculated based on the information regarding charging and discharging at multiple facilities because the central management device manages information regarding charging and discharging at multiple facilities. Furthermore, the multiple facilities can effectively utilize surplus electricity generated at the facilities by charging the electric vehicle. Furthermore, if there is a power shortage at a facility, the power shortage can be resolved by discharging the electric vehicle to the facility. In this way, by managing information regarding charging and discharging of the electric vehicle and multiple facilities, it is possible to effectively utilize the electricity of the multiple facilities. Furthermore, it is possible to supply power to multiple facilities using the batteries of the electric vehicle.

[0212] Furthermore, according to the above energy management system, the plan creation unit creates information about the amount of stored power for a user associated with the mobile terminal based on a history of charging and discharging performed between a plurality of facilities and the electric vehicle, and generates a charge and discharge plan based on the information about the amount of stored power including the first information. As a result, information about the amount of stored power for each user is managed based on the history of charging and discharging performed between a plurality of facilities and the electric vehicle, so that when a user charges or discharges at a plurality of facilities, the amount of charging or discharging can be calculated based on information about charging and discharging performed at other facilities.

[0213] Furthermore, according to the above energy management system, the plan creation unit transmits incentive information related to the second charging / discharging to the mobile terminal based on information related to the amount of stored power. This allows information related to the amount of stored power for each user to be managed, making it possible to transmit incentive information related to the second charging / discharging. For example, by discharging power from an electric vehicle to a facility, points can be transmitted to the mobile terminal 5 as incentive information. This makes it possible to encourage users to charge / discharge power from their electric vehicles to facilities.

[0214] Furthermore, according to the energy management system, the plan creation unit sets a rank for incentive information based on information about the amount of stored electricity. For example, if a user's stored electricity amount is greater than a predetermined amount, the rank is increased. Furthermore, for example, a higher rank means more incentive points are awarded. This encourages users to charge and discharge their electric vehicles to multiple facilities.

[0215] Furthermore, according to the energy management system, the plan creation unit sets the cost related to the second charging / discharging based on at least the first information. As a result, by managing information related to charging / discharging at multiple facilities, the cost related to the second charging / discharging can be set based on the first information. For example, it is possible to reduce or discount the cost related to the second charging / discharging based on the first information.

[0216] Furthermore, according to the energy management system, the plan creation unit sets the cost for the second charging / discharging based on information about the amount of stored power. This allows the cost for the second charging / discharging to be set by managing information about the user's charging / discharging as the amount of stored power for each user. For example, a user with a large cumulative amount of stored power can have the cost for the second charging / discharging reduced or discounted.

[0217] Furthermore, according to the energy management system, when an electric vehicle is to be charged, the plan creation unit transmits to the mobile terminal information that allows the user to select either a cost based on information about the amount of stored energy of the user associated with the electric vehicle or a cost based on information about the amount of stored energy of another user associated with another electric vehicle. By managing the amount of stored energy for each user in this way, users can trade charging and discharging. This allows users to select not only their own stored energy but also the stored energy of other users when charging.

[0218] Furthermore, according to the energy management system, when the electric vehicle is charged at another facility, the plan creation unit transmits to the other facility a charge / discharge plan that prioritizes the use of renewable energy. By prioritizing the use of renewable energy at the other facility when the electric vehicle is charged from the other facility in this way, renewable energy can be effectively utilized throughout the energy management system.

[0219] Furthermore, according to the energy management system, when the electric vehicle discharges electricity at one of a plurality of facilities, the plan creation unit transmits to the mobile terminal a charge / discharge plan including information for selecting whether to sell at least a portion of the electric vehicle's stored electricity to one of the plurality of facilities or to another user. In this way, the amount of stored electricity is managed for each user, allowing users to trade electricity charges and discharges with each other. This allows users to choose to sell electricity to another user when discharging electricity.

[0220] Furthermore, according to the energy management system, the plan creation unit transmits an advertisement for one of a plurality of facilities to a mobile terminal based on information about the amount of stored power. This allows, for example, information about discounts on facility charging and discharging fees to be delivered to the user. This allows the user to be encouraged to charge and discharge at the timing necessary to balance the facility's power consumption. In other words, it is possible to encourage users to change their behavior.

[0221] Furthermore, according to the energy management system, the plan creation unit selects the other facilities based on the power storage status of each of the facilities. This makes it possible to select an appropriate other facility based on the power storage status of the multiple facilities. This makes it possible to smooth the power balance among the multiple facilities.

[0222] Furthermore, according to the energy management system, the plan creation unit acquires the amount of stored electricity at each of a plurality of facilities, and if there is a facility with a stored electricity amount greater than a predetermined amount, selects another facility from the facility with a stored electricity amount greater than the predetermined amount for charging an electric vehicle, and if there is a facility with a stored electricity amount less than the predetermined amount, selects another facility from which an electric vehicle can discharge electricity to the facility with a stored electricity amount less than the predetermined amount. This makes it possible to select an appropriate other facility based on the stored electricity status of the plurality of facilities. The user can be encouraged to charge and discharge electricity at the timing necessary to balance the power at the facilities. In other words, the user can be encouraged to change their behavior.

[0223] Furthermore, according to the energy management system, the plan creation unit includes, in the incentive information, information on discounts on charging costs at the time of charging. As a result, the incentive information can be sent to the mobile terminal 5 as information on points awarded or discounts on charging costs.

[0224] Furthermore, according to one embodiment of the energy management method, there is provided an energy management method that is connected via a network to a plurality of facilities where electric vehicles are discharged and charged, and that manages information relating to the charging and discharging of the plurality of facilities, and that includes a plan creation unit that generates a charge and discharge plan including the amount of charge and discharge for a second charge and discharge that is to be performed between the electric vehicle and another facility among the plurality of facilities that is different from the specified facility, based on first information relating to a first charge and discharge that is performed between the electric vehicle and a specified facility among the plurality of facilities, and a transmission unit that transmits the charge and discharge plan to a mobile terminal associated with the electric vehicle and the other facilities.

[0225] Furthermore, according to one embodiment of the central management device, the central management device is connected via a network to a plurality of facilities where electric vehicles are discharged and charged, manages information regarding charging and discharging at the plurality of facilities, and is equipped with a plan creation unit that generates a charge and discharge plan including charge and discharge amounts for a second charge and discharge to be performed between the electric vehicle and another facility among the plurality of facilities that is different from the specified facility, based on first information regarding a first charge and discharge performed between the electric vehicle and a specified facility among the plurality of facilities, and a transmission unit that transmits the charge and discharge plan to a mobile terminal associated with the electric vehicle and other facilities.

[0226] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0227] 1...energy management system, 2...power system, 3...photovoltaic power generation equipment, 4...storage battery, 5...mobile terminal, 6...electric vehicle, 10...central management unit, 20...first facility, 30...second facility, 40...third facility, 120...memory unit, 121...planning unit, 130...behavior change unit, 141...information creation unit, 151...editing unit, 204, 304...charger / discharger, 206, 306...storage battery, 209, 309...PV, 311...input unit, 64...battery

Claims

1. a central management device connected via a network to a plurality of facilities where electric vehicles are discharged and charged, and managing information relating to charging and discharging at the plurality of facilities; The central management device a plan creation unit that creates a charge / discharge plan including a charge / discharge amount for a second charge / discharge to be performed between the electric vehicle and another facility other than the predetermined facility among the plurality of facilities, based on first information regarding a first charge / discharge performed between the electric vehicle and a predetermined facility among the plurality of facilities; a transmitting unit that transmits the charge / discharge plan to a mobile terminal associated with the electric vehicle and the other facility; Energy management system equipped with

2. The plan creation unit creating information about the amount of stored electricity based on a history of charging and discharging performed between the plurality of facilities and the electric vehicle for the user associated with the mobile terminal; generating the charge / discharge plan based on information related to the stored power amount including the first information; The energy management system of claim 1 .

3. the plan creation unit transmits incentive information regarding the second charging / discharging to the mobile terminal based on information regarding the amount of stored electricity. The energy management system of claim 2 .

4. the plan creation unit sets a rank for the incentive information based on information related to the amount of stored electricity. The energy management system according to claim 3 .

5. The plan creation unit sets a cost related to the second charging and discharging based on at least the first information.

3. The energy management system according to claim 1 or 2.

6. the plan creation unit sets a cost related to the second charging and discharging based on information related to the amount of stored electricity. The energy management system of claim 2 .

7. When the electric vehicle is to be charged, the plan creation unit transmits to the mobile terminal information allowing the user to select either a cost based on information about the amount of stored power of the user associated with the electric vehicle or a cost based on information about the amount of stored power of another user associated with another electric vehicle. The energy management system of claim 2 .

8. When the electric vehicle is charged at the other facility, the plan creation unit transmits the charge / discharge plan that gives priority to using renewable energy to the other facility.

3. The energy management system according to claim 1 or 2.

9. the plan creation unit transmits to the mobile terminal the charge / discharge plan including information for selecting whether to sell at least a portion of the stored electricity to one of the facilities or to another user when the electric vehicle discharges electricity at one of the facilities; The energy management system of claim 2 .

10. the plan creation unit transmits an advertisement for any one of the plurality of facilities to the mobile terminal based on the information about the amount of stored electricity. The energy management system of claim 2 .

11. the plan creation unit selects the other facilities based on the power storage status of each of the plurality of facilities.

3. The energy management system according to claim 1 or 2.

12. The plan creation unit Acquire the amount of stored electricity at each of the plurality of facilities; If there is a facility where the amount of stored electricity is greater than a predetermined amount, the other facility related to charging the electric vehicle is selected from the facility where the amount of stored electricity is greater than the predetermined amount; If there is a facility where the amount of stored electricity is less than a predetermined amount, the other facility is selected for discharging electricity from the electric vehicle to the facility where the amount of stored electricity is less than the predetermined amount. The energy management system of claim 11.

13. An energy management method connected to a plurality of facilities that discharge and charge electric vehicles via a network, and managing information regarding charging and discharging of the plurality of facilities, comprising: a plan creation unit that creates a charge / discharge plan including a charge / discharge amount for a second charge / discharge to be performed between the electric vehicle and another facility other than the predetermined facility among the plurality of facilities, based on first information regarding a first charge / discharge performed between the electric vehicle and a predetermined facility among the plurality of facilities; a transmitting unit that transmits the charge / discharge plan to a mobile terminal associated with the electric vehicle and the other facility; An energy management method that includes:

14. The system is connected to a plurality of facilities that discharge and charge electric vehicles via a network, and manages information relating to charging and discharging at the plurality of facilities; a plan creation unit that creates a charge / discharge plan including a charge / discharge amount for a second charge / discharge to be performed between the electric vehicle and another facility other than the predetermined facility among the plurality of facilities, based on first information regarding a first charge / discharge performed between the electric vehicle and a predetermined facility among the plurality of facilities; a transmitting unit that transmits the charge / discharge plan to a mobile terminal associated with the electric vehicle and the other facility; A central control unit equipped with:

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