Power management system and power management method

Abstract

To provide a system and method for power management that allow for giving an environmental value to an attributive subject when right holders of a moving body and a power-generating device are associated with an attributive subject.SOLUTION: A system for power management, for managing a predetermined facility (home or home-visit facility) having a power-generating device (solar cell device), comprises a management device 30 having a receiving section that receives a message including a first information element to identify a right holder of the moving body and a second information element to identify a right holder of the power-generating device if an electricity storing device provided on the moving body is charged by output power from a power-generating device and a control section that identifies an attributive subject of an environmental value caused by charging to the electricity storing device based on the first and second information elements.SELECTED DRAWING: Figure 4

Description

[Technical Field]

[0001] The present disclosure relates to a power management system and a power management method. [Background technology]

[0002] In recent years, power generation devices that utilize natural energy such as solar, wind, hydroelectric, and geothermal power have been attracting attention. Furthermore, a system (so-called self-consumption) is known in which the power output from a power generation device installed in a specified facility is consumed by load equipment installed in the specified facility (for example, Patent Document 1).

[0003] Meanwhile, a system has been proposed for imparting environmental value through the above-mentioned self-consumption. Furthermore, one of the above-mentioned load devices is a power storage device provided in a mobile object such as an electric vehicle.

[0004] However, there may be cases where a storage device installed in a mobile body belonging to a designated facility is charged using electricity output from a power generation device installed in a visit facility other than the designated facility, or where a storage device installed in a mobile body other than a mobile body belonging to the designated facility is charged using electricity output from a power generation device installed in the designated facility.

[0005] In these cases, it is unclear how environmental value is attributed to the self-consumption associated with charging the power storage device installed in the mobile object. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] Japanese Patent Application Publication No. 2017-191523 Summary of the Invention

[0007] The power management system of the present disclosure is a system for managing a specified facility having a power generation device, and includes: a receiving unit that receives a message including a first information element that identifies a rights holder for the mobile body and a second information element that identifies a rights holder for the power generation device when a storage device installed in the mobile body is charged using output power from the power generation device; and a control unit that identifies an entity to which environmental value generated by charging the storage device belongs based on the first information element and the second information element.

[0008] The power management method disclosed herein is a method for managing a specified facility having a power generation device, and includes the steps of: receiving a message including a first information element that identifies a rights holder for the mobile body and a second information element that identifies a rights holder for the power generation device when a storage device installed in a mobile body is charged using output power from the power generation device; and identifying an entity to which environmental value generated by charging the storage device belongs based on the first information element and the second information element. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a diagram showing a power management system 100 according to an embodiment. [Figure 2] FIG. 2 is a diagram showing the home facilities 10 according to the embodiment. [Figure 3] FIG. 3 is a diagram showing a visited facility 20A according to the embodiment. [Figure 4] FIG. 4 is a diagram illustrating the management device 30 according to the embodiment. [Figure 5] FIG. 5 is a diagram illustrating a message according to the embodiment. [Figure 6] FIG. 6 is a diagram showing an example of the correspondence relationship stored in the storage unit 32 according to the embodiment. [Figure 7] FIG. 7 is a diagram showing an example of the correspondence relationship stored in the storage unit 32 according to the embodiment. [Figure 8] FIG. 8 is a diagram for explaining private power consumption according to the embodiment. [Figure 9] FIG. 9 is a diagram for explaining private power consumption according to the embodiment. [Figure 10] FIG. 10 is a diagram illustrating a power management method according to the embodiment. [Figure 11] FIG. 11 is a diagram illustrating a power management method according to the second embodiment. [Figure 12] FIG. 12 is a diagram illustrating a power management method according to the third embodiment. [Figure 13] FIG. 13 is a diagram showing the home facilities 10 according to the fourth embodiment. [Figure 14] FIG. 14 is a diagram showing a visited facility 20A according to the sixth embodiment. [Figure 15] FIG. 15 is a diagram showing a detection unit 27A according to the sixth embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments will be described with reference to the drawings. In the following description of the drawings, the same or similar parts are denoted by the same or similar reference numerals. However, the drawings are schematic.

[0011] [Embodiment] (Power Management System) The following describes an energy management system 100 according to an embodiment. As shown in FIG. 1, the energy management system 100 includes a home facility 10, a visited facility 20, a management device 30, and an electric vehicle (hereinafter, referred to as EV) 50. The home facility 10 and the management device 30 are connected via a network 120. The visited facility 20 and the management device 30 may also be connected via the network 120. The network 120 may include the Internet network or a mobile communication network. The network 120 may also include a VPN (Virtual Private Network).

[0012] The home facility 10 is an example of a predetermined facility having a power generation device (a solar cell device 11, described later). The home facility 10 is a facility that belongs to a right holder of the EV 50. In other words, the right holder of the home facility 10 is the same as the right holder of the EV 50, and the EV 50 belongs to the home facility 10. The right holder of the home facility 10 may be the owner of the home facility 10 in the case where the home facility 10 is a purchased property, or may be the lessee, lessor, or manager of the home facility 10 in the case where the home facility 10 is a rental property. The right holder of the EV 50 may be the owner of the EV 50 in the case where the EV 50 is a purchased property, or may be the lessee, lessor, or manager of the EV 50 in the case where the EV 50 is a rental property. The case where the EV 50 is a rental property may include a case where the EV 50 is shared by two or more users (car sharing). The EV 50 is an example of a mobile object that may move from the home facility 10.

[0013] Here, home facility 10 has charging equipment 15 that charges a power storage device provided in EV 50. Hereinafter, the power storage device provided in EV 50 will be simply referred to as EV 50. Details of home facility 10 will be described later (see FIG. 2).

[0014] The visited facility 20 is an example of a predetermined facility that has a power generation device (for example, solar cell device 21A, described below). The visited facility 20 is a facility that does not belong to the rights holder of EV 50. In other words, the rights holder of the visited facility 20 is different from the rights holder of EV 50, and EV 50 is an example of a third-party moving body that does not belong to the visited facility 20 from the perspective of the visited facility 20. The rights holder of the visited facility 20 may be the owner of the visited facility 20 in the case where the visited facility 20 is a purchased property, or may be the tenant, landlord, or manager of the visited facility 20 in the case where the visited facility 20 is a rented property.

[0015] In FIG. 1, visited facility 20 is exemplified by visited facility 20A, visited facility 20B, and visited facility 20C. Visited facility 20A may include a charging station for charging EV 50. Visited facility 20B may include a commercial facility such as a shopping center. Visited facility 20C may include the residence of a friend of the right holder of EV 50. Visited facility 20C may include an office facility where the right holder of EV 50 works.

[0016] For example, visited facility 20 may include visited facility 20A that has charging facility 25A for charging EV 50. Visited facility 20 may also include visited facility 20B and visited facility 20C that do not have charging facility (charging facility 15A or charging facility 25A, the same applies below) for charging EV 50. However, visited facility 20B and visited facility 20C may have charging facility for charging EV 50. Details of visited facility 20A, which is an example of visited facility 20, will be described later (see FIG. 3).

[0017] The management device 30 is a device that identifies the entity to which the environmental value generated by charging the EV 50 belongs. The management device 30 is a device that belongs to a management entity that manages two or more facilities including the home facility 10 and the visited facility 20. The management device 30 may be a device managed by a business operator such as a power generation business operator, a power transmission and distribution business operator, a retail business operator, or a resource aggregator. A resource aggregator is an electric power business operator that provides reverse flow power to power generation business operators, power transmission and distribution business operators, retail businesses, etc. in a VPP (Virtual Power Plant). A resource aggregator may be an electric power business operator that generates reduced power from the forward flow power (power consumption) of the facilities managed by the resource aggregator. The business operator that manages the management device 30 may be an entity that purchases reverse flow power.

[0018] The management device 30 may transmit to the facility a control message instructing control of a distributed power source (e.g., a solar cell device, a power storage device, or a fuel cell device) installed in the facility. For example, the management device 30 may transmit a forward flow control message (e.g., a Demand Response (DR)) requesting control of forward flow power, or a reverse flow control message requesting control of reverse flow power. Furthermore, the management device 30 may transmit a power control message to control the operating state of the distributed power source. The control degree of forward flow power or reverse flow power may be expressed as an absolute value (e.g., XX kW) or a relative value (e.g., XX%). Alternatively, the control degree of forward flow power or reverse flow power may be expressed using two or more levels. The control degree of forward flow power or reverse flow power may be expressed by an electricity rate (RTP; Real Time Pricing) determined based on the current electricity supply and demand balance, or by an electricity rate (TOU; Time Of Use) determined based on the past electricity supply and demand balance. Details of the management device 30 will be described later (see FIG. 4).

[0019] (Home facility) The home facility 10 according to the embodiment will be described below. As shown in Fig. 2, the home facility 10 includes a solar cell device 11, a power storage device 12, a fuel cell device 13, a load device 14, a charging facility 15, and a local control device 16. The home facility 10 further includes a power meter 180, a power meter 181, and a power meter 182.

[0020] The solar cell device 11 is a distributed power source that generates power in response to light such as sunlight. The solar cell device 11 may be an example of a distributed power source to which a feed-in tariff (FIT (Feed-in Tariff)) is applied. For example, the solar cell device 11 is configured by a PCS (Power Conditioning System) and a solar panel. The solar cell device 11 may be an example of a controlled facility that can be controlled by a management entity (management device 30).

[0021] Here, the power output from the solar cell device 11 can fluctuate depending on the amount of light received, such as sunlight. Therefore, when the power generation efficiency of the solar cell device 11 is taken into consideration, the power output from the solar cell device 11 is variable power that can fluctuate depending on the amount of light received by the solar panel.

[0022] The power storage device 12 is a distributed power source that charges and discharges power. The power storage device 12 may be an example of a distributed power source to which a feed-in tariff does not apply. For example, the power storage device 12 is configured with a PCS and a power storage cell. The power storage device 12 may be an example of a control target facility that can be controlled by a management entity (management device 30).

[0023] The fuel cell device 13 is a distributed power source that generates power using fuel. The fuel cell device 13 may be an example of a distributed power source to which a feed-in tariff does not apply. For example, the fuel cell device 13 is composed of a PCS and a fuel cell. The fuel cell device 13 may be an example of a controlled facility that can be controlled by a management entity (management device 30).

[0024] For example, the fuel cell device 13 may be a solid oxide fuel cell (SOFC: Solid Oxide Fuel Cell), a polymer electrolyte fuel cell (PEFC: Polymer Electrolyte Fuel Cell), a phosphoric acid fuel cell (PAFC: Phosphoric Acid Fuel Cell), or a molten carbonate fuel cell (MCFC: Molten Carbonate Fuel Cell).

[0025] The load devices 14 are devices that consume power. For example, the load devices 14 are air conditioners, lighting devices, AV (Audio Visual) devices, etc. The load devices 14 may be an example of non-controllable facilities that are not controlled by the power management entity (management device 30).

[0026] Charging equipment 15 is equipment that charges EV 50. Charging equipment 15 may include an adapter configured to be attachable to a household outlet. Charging equipment 15 may have a power meter that measures at least one of the charging power of EV 50 and the discharging power of EV 50. Charging equipment 15 may transmit power information indicating at least one of the charging power of EV 50 and the discharging power of EV 50 to local control device 16.

[0027] The local control device 16 is a device (EMS: Energy Management System) that manages the power of the home facility 10. The local control device 16 may control the operating state of the solar cell device 11, may control the operating state of the power storage device 12 provided in the home facility 10, or may control the operating state of the fuel cell device 13 provided in the home facility 10.

[0028] The power meter 180 is an example of a core power meter that measures forward flow power from the power system 110 to the home facilities 10 and reverse flow power from the home facilities 10 to the power system 110. For example, the power meter 180 is a smart meter belonging to an electric power company.

[0029] The power meter 181 is a power meter that measures the output power of the solar cell device 11. The power meter 181 may be provided in the solar cell device 11.

[0030] The power meter 182 is a power meter that measures the power of devices installed downstream of the solar cell device 11 in the home facility 10. Here, "downstream" is a term that indicates a position away from the power grid 110. When reverse power flow of the output power of the power storage device 12 and the fuel cell device 13 is not recognized, the power meter 182 may be used as a power meter to prevent reverse power flow. In such a case, the power meter 182 measures the power consumption measured as a group of devices installed downstream of the solar cell device 11. When the power storage device 12 is discharging, the power consumption measured by the power meter 182 is the sum of the power consumption of the load device 14 and the charging power of the EV 50 minus the sum of the discharge power of the power storage device 12 and the output power of the fuel cell device 13. When the power storage device 12 is charging, the power consumption measured by the power meter 182 is the sum of the charging power of the power storage device 12, the power consumption of the load device 14, and the charging power of the EV 50 minus the sum of the output power of the fuel cell device 13.

[0031] 2, power meter 180 is a core power meter belonging to an electric power company, and may be a power meter having higher reliability than power meters 181 and 182. Power meter 182 is a power meter certified by a third-party organization, and may be a power meter having higher reliability than power meter 181. The reliability refers to reliability when determining the price of electricity and environmental value, and does not necessarily refer to reliability of measurement accuracy.

[0032] Under these assumptions, the solar cell device 11 is an example of a power generation device that generates environmental value when the output power of the solar cell device 11 is consumed in the home facility 10 (so-called self-consumption). For example, in a case where a reduction in carbon dioxide emissions generates environmental value, the act of consuming in the home facility 10 the power generated by the solar cell device 11, which does not emit carbon dioxide (self-consumption), rather than the power generated by a power plant that emits carbon dioxide, generates environmental value in the sense that it contributes to reducing carbon dioxide emissions. The environmental value may be a value certified by a third-party organization. The environmental value may be certified by environmental values ​​such as green power certificates and J-credits. In the embodiment, attention is focused on the attribution of environmental value generated by charging the EV50, which is included in self-consumption.

[0033] The above-described local control device 16 may be able to identify forward flow power from the power grid 110 to the home facility 10 and reverse flow power from the home facility 10 to the power grid 110 based on power information received from the power meter 180. The local control device 16 may identify the output power of the solar cell device 11 based on power information received from the power meter 181. The local control device 16 may identify the power consumption measured as a group of devices provided downstream of the solar cell device 11 in the home facility 10 based on power information received from the power meter 182.

[0034] The local control device 16 may be able to determine the output power of the solar cell device 11 based on power information received from the solar cell device 11. The local control device 16 may be able to determine the charging power or discharging power of the power storage device 12 based on power information received from the power storage device 12. The local control device 16 may be able to determine the output power of the fuel cell device 13 based on power information received from the fuel cell device 13. The local control device 16 may be able to determine the power consumption of the load device 14 based on power information received from the load device 14. The local control device 16 may be able to determine the charging power or discharging power of the EV 50 based on power information received from the charging facility 15.

[0035] FIG. 2 illustrates a case where the power storage device 12 and the fuel cell device 13 are provided in the home facility 10, but at least one of the power storage device 12 and the fuel cell device 13 does not have to be provided in the home facility 10.

[0036] (Visiting facilities) The following describes a visited facility 20 according to an embodiment. Here, visited facility 20A will be described as an example of visited facility 20. Visited facilities 20B and 20C may also have the same configuration as visited facility 20A. As shown in FIG. 3, visited facility 20A includes solar cell device 21A, load device 24A, charging equipment 25A, and local control device 26A. Furthermore, visited facility 20A includes power meter 280A, power meter 281A, and power meter 282A.

[0037] Like the solar cell device 11, the solar cell device 21A is a distributed power source that generates electricity in response to light such as sunlight. Like the load device 14, the load device 24A is a device that consumes power. Like the charging device 15, the charging equipment 25A is a facility that charges the EV 50. Like the local control device 16, the local control device 26A is a device that manages the power of the visited facility 20A.

[0038] For example, charging equipment 25A may have a power meter that measures at least one of the charging power of EV 50 and the discharging power of EV 50, similar to charging equipment 15. Charging equipment 25A may transmit power information indicating at least one of the charging power of EV 50 and the discharging power of EV 50 to local control device 26A.

[0039] Like the power meter 180, the power meter 280A is an example of a core power meter that measures forward flow power from the power system 110 to the visited facility 20A and reverse flow power from the visited facility 20A to the power system 110. Like the power meter 181, the power meter 281A is a power meter that measures the output power of the solar cell device 21A. Like the power meter 182, the power meter 282A is a power meter that measures the power of a device installed downstream of the solar cell device 21A in the visited facility 20.

[0040] Under these assumptions, the solar cell device 21A is an example of a power generation device that generates environmental value when the output power of the solar cell device 21A is consumed at the visited facility 20A (so-called self-consumption). The environmental value may be a value associated with consideration for the global environment, such as carbon pricing for carbon dioxide, which contributes to global warming. For example, the environmental value may be a value certified by a third-party organization. The environmental value may be certified by environmental values ​​such as green power certificates and J-credits. In the embodiment, attention is focused on the attribution of environmental value generated by charging the EV50, which is included in self-consumption.

[0041] The above-described local control device 26A may be able to identify the forward flow power from the power grid 110 to the visited facility 20A and the reverse flow power from the visited facility 20A to the power grid 110, based on the power information received from the power meter 280A. The local control device 26A may identify the output power of the solar cell device 21A, based on the power information received from the power meter 281A. The local control device 26A may identify the power consumption measured as a group of devices provided downstream of the solar cell device 21A in the visited facility 20, based on the power information received from the power meter 282A.

[0042] Local control device 26A may be able to determine the output power of solar cell device 21A based on power information received from solar cell device 21A. Local control device 26A may be able to determine the power consumption of load device 24A based on power information received from load device 24A. Local control device 26A may be able to determine the charging power or discharging power of EV 50 based on power information received from charging facility 25A.

[0043] Although FIG. 3 illustrates a case in which neither a power storage device nor a fuel cell device is provided in the visited facility 20A, at least one of a power storage device and a fuel cell device may be provided in the visited facility 20A.

[0044] (Management device) The management device 30 according to the embodiment will be described below. As shown in FIG.

[0045] The communication unit 31 is configured by a communication module. The communication module may be a wireless communication module conforming to standards such as IEEE802.11a / b / g / n, ZigBee, Wi-SUN, or LTE, or may be a wired communication module conforming to standards such as IEEE802.3.

[0046] The communication unit 31 constitutes a receiving unit that receives a message including at least a first information element and a second information element when the EV 50 is charged using output power output from the power generation device (solar cell device 11 or solar cell device 21A). The communication unit 31 may receive a message from a predetermined facility. The communication unit 31 may receive a message from the EV 50 when the EV 50 is able to communicate with the management device 30. The first information element is an information element that identifies a rights holder related to the EV 50. The second information element is an information element that identifies a rights holder related to the power generation device. For example, the message may be received when charging of the EV 50 is completed. The message may be generated according to the format shown in FIG. 5, which will be described later.

[0047] The right holder of the EV50 may be the owner of the EV50, or may be the lessee, lessor or manager of the EV50.

[0048] The right holder of the EV 50 may be indirectly identified by an information element (for example, a vehicle ID) that identifies the EV 50. In such a case, the first information element may include an information element that identifies the EV 50.

[0049] The right holder for the power generation device may directly or indirectly identify the entity to which the environmental value generated by charging the EV 50 from the power generation device belongs. Specifically, the right holder for the power generation device may be the right holder for the specified facility (home facility 10 or visit facility 20) in which the power generation device is installed. As described above, the right holder for the specified facility may be the owner of the specified facility, or the tenant, lessor, or manager of the specified facility. Alternatively, the right holder for the power generation device may be different from the right holder for the specified facility. For example, if the power generation device is owned by a third party different from the right holder for the specified facility, the right holder for the power generation device may be the third party who owns the power generation device.

[0050] The rights holder of the power generation device may be indirectly identified by an information element (e.g., a facility ID) that identifies a specific facility (home facility 10 or visited facility 20A). In such a case, the second information element may include an information element that identifies the specific facility. The rights holder of the power generation device may be indirectly identified by an information element that identifies charging equipment (charging equipment 15 or charging equipment 25A) that charges EV 50 from the power generation device. In such a case, the second information element may include an information element that identifies the charging equipment. The rights holder of the power generation device may be indirectly identified by an information element (e.g., a power generation device ID) that identifies the power generation device (solar cell device 11 or solar cell device 21A). In such a case, the second information element may include an information element that identifies the power generation device.

[0051] For example, as shown in FIG. 5, the above message may include a header, a first information element, a second information element, a time information element, and a power information element.

[0052] The header includes the source and destination of the message. The first information element is an information element that identifies the rights holder of the EV 50. The second information element is an information element that identifies the rights holder of the power generation device. The time information element is an information element that identifies the time period during which the EV 50 was charged from the power generation device. The power information element is an information element that identifies the self-powered consumption during the time period during which the EV 50 was charged from the power generation device. Alternatively, the power information element is an information element that identifies the charging power from the power generation device to the EV 50. The power information element is an example of a third information element that identifies the self-powered consumption of a specified facility.

[0053] 5 illustrates an example in which a time information element is included in the message, but if the time period in which charging from the power generation device to EV 50 is identifiable by other methods, the time information element does not have to be included in the message. Similarly, while FIG. 5 illustrates an example in which a power information element is included in the message, if the charging power from the power generation device to EV 50 is identifiable by other methods, the power information element does not have to be included in the message.

[0054] The storage unit 32 is configured by a memory such as a nonvolatile memory and / or a storage medium such as an HDD (Hard disc drive), and stores various information.

[0055] The storage unit 32 stores, as a correspondence relationship specifying the entity to which the environmental value belongs, a correspondence relationship between at least one of a predetermined facility and a power generation device and the EV 50. The storage unit 32 stores, as a correspondence relationship specifying the entity to which the environmental value belongs, a correspondence relationship between a charging facility and the EV 50. For example, the storage unit 32 stores the correspondence relationship shown in FIG. 6 or FIG. 7.

[0056] As shown in FIG. 6 or 7, the storage unit 32 stores the correspondence relationship between the charged entity, the charging entity, and the belonging entity.

[0057] The entity to be charged is an entity that is charged using its own power consumption. In the embodiment, attention is focused on the case where the entity to be charged is an EV 50, and the entity to be charged may be identified by the first information element described above.

[0058] The charging entity is an entity that charges using self-consumed electricity. In an embodiment, the charging entity may include a predetermined facility, a power generation device, or a charging facility. When the right holder of the power generation device is an information element that indirectly identifies the owner, the charging entity may be considered to be an information element identified by the second information element described above.

[0059] The attribution entity is the entity to which the environmental value generated by charging the EV 50 from the power generation device belongs. When the right holder of the power generation device is an information element that directly identifies the attribution entity, the attribution entity may be considered to be an information element identified by the second information element described above.

[0060] For example, consider the case where the vehicle ID of EV 50 is "AAA," the facility ID of home facility 10 is "aaa," and the facility ID of visited facility 20A is "bbb." The charging facility ID of charging facility 15 is "Paaa," and the power generation facility ID of solar cell device 11 is "Qaaa." The charging facility ID of charging facility 25A is "Pbbb," and the power generation facility ID of solar cell device 21A is "Qbbb." Furthermore, assume that the entity to which the environmental value generated by charging EV 50 using the home facility's self-consumption electricity belongs is "XXX." "XXX" may be the owner, lessee, lender, or manager of home facility 10, or the owner, lessee, lender, or manager of solar cell device 11. "XXX" may also be the owner, lessee, lender, or manager of charging facility 15. "XXX" may also be the management entity (management device 30) of home facility 10.

[0061] In such a case, the entity to which the environmental value resulting from charging EV50 using the self-consumption power of visited facility 20A belongs may be "XXX" as shown in FIG. 6, or may be "YYY" different from "XXX" as shown in FIG. 7. "YYY" may be the owner, lessee, lessor, or manager of visited facility 20A, or the owner, lessee, lessor, or manager of solar cell device 21A. "YYY" may be the owner, lessee, lessor, or manager of charging facility 15.

[0062] Note that Figure 6 may be considered to show a case where the attribution entity is the same when EV50 is used by one user, or may be considered to show a case where the attribution entity is the same when EV50 is used by two or more users. Figure 7 may be considered to show a case where the attribution entity is different when EV50 is used by two or more users, or may be considered to show an example of a case where the attribution entity is different when EV50 is used by one user.

[0063] Here, the correspondence between the combination of the charged entity and the charging entity and the belonging entity can be set arbitrarily based on various factors such as contractual relationships, etc. The correspondence stored in the storage unit 32 may be determined in advance.

[0064] The control unit 33 may include at least one processor. The at least one processor may be configured by a single integrated circuit (IC), or may be configured by multiple circuits (such as integrated circuits and / or discrete circuits) that are communicatively connected.

[0065] The control unit 33 identifies the attribution entity of the environmental value generated by charging the EV 50 based on the first information element and the second information element. When the second information element (right holder related to the power generation device) is an information element that directly identifies the attribution entity, the control unit 33 may identify the attribution entity without using the correspondence stored in the storage unit 32, or may identify the attribution entity using the correspondence stored in the storage unit 32. When the second information element (right holder related to the power generation device) is an information element that indirectly identifies the attribution entity, the control unit 33 may identify the attribution entity using the correspondence stored in the storage unit 32.

[0066] Here, the control unit 33 may identify the attribution entity of the environmental value based on whether or not the first information element and the second information element satisfy the correspondence relationship stored in the storage unit 32. Specifically, when a combination of the first information element and the second information element is stored in the storage unit 32, the control unit 33 identifies the attribution entity in accordance with the correspondence relationship stored in the storage unit 32. On the other hand, when a combination of the first information element and the second information element is not stored in the storage unit 32, the control unit 33 does not identify the attribution entity, regarding it as unknown.

[0067] That is, by storing in advance in storage unit 32 the correspondence relationship regarding charging of EV 50 permitted as self-consumption, it is possible to identify an appropriate entity to which EV 50 belongs, even when the mobility of EV 50 is taken into consideration.

[0068] (In-house power consumption) The following describes the self-consumption power according to the embodiment. Here, the description will be given taking the self-consumption power of the home facility 10 as an example. The case where the power generation device that generates environmental value through self-consumption is the solar cell device 11 will be exemplified.

[0069] First, a case where there is forward flow power (purchased power) from the power grid 110 to the home facility 10 will be described with reference to FIG.

[0070] In such a case, the sum of the purchased power and the output power is equal to the sum of the power consumption of the load device 14 and the charging power of the EV 50. The purchased power is the power measured by the power meter 180 described above. The output power includes at least the output power of the solar cell device 11. When the power storage device 12 is discharging, the output power may include the discharging power of the power storage device 12. The output power may include the output power of the fuel cell device 13. On the other hand, the power consumption includes the power consumption of the load device 14. When the power storage device 12 is charging, the power consumption may include the charging power of the power storage device 12.

[0071] 8, the self-consumption power may be calculated as the difference between the power consumption measured by the power meter 182 and the purchased power measured by the power meter 180. When the power storage device 12 is discharging, the power consumption measured by the power meter 182 is the sum of the power consumption of the load device 14 and the charging power of the EV 50 minus the sum of the discharge power of the power storage device 12 and the output power of the fuel cell device 13. On the other hand, when the power storage device 12 is charging, the power consumption measured by the power meter 182 is the sum of the charging power of the power storage device 12, the power consumption of the load device 14, and the charging power of the EV 50 minus the sum of the output power of the fuel cell device 13.

[0072] Here, the self-consumption power calculated by the above-described method (hereinafter referred to as the calculated self-consumption power) is theoretically the same as the power measured by the power meter 181 (the output power of the solar cell device 11). Therefore, the power measured by the power meter 181 may be treated as the self-consumption power. However, due to measurement errors of the power meter 181, etc., the power measured by the power meter 181 may not match the calculated self-consumption power. In such a case, the smaller value of the power measured by the power meter 181 and the calculated self-consumption power may be treated as the self-consumption power.

[0073] Furthermore, if it is possible to obtain all of the output power of the solar cell device 11, the charging or discharging power of the power storage device 12, the output power of the fuel cell device 13, the power consumption of the load device 14, and the charging power of the EV 50, the self-consumption power may be calculated based on these parameters. Even in such a case, the smallest value of the self-consumption power calculated by various methods may be treated as the self-consumption power.

[0074] Secondly, a case where there is reverse flow power (power to sell) from the home facilities 10 to the power grid 110 will be described with reference to FIG.

[0075] In such a case, the total output power is equal to the total of the power sold, the power consumed, and the power charged to EV50. The power sold is the power measured by the power meter 180 described above. The output power includes at least the output power of solar cell device 11. When power storage device 12 is discharging, the output power may include the discharge power of power storage device 12. The output power may include the output power of fuel cell device 13. On the other hand, the power consumed includes the power consumed by load device 14. When power storage device 12 is charging, the power consumed may include the power charged to power storage device 12.

[0076] In the case shown in FIG. 9, the self-power consumption may be calculated as the difference between the power measured by the power meter 181 (the output power of the solar cell device 11) and the sold power measured by the power meter 180.

[0077] Here, the self-consumption power calculated by the above-described method (hereinafter referred to as calculated self-consumption power) is theoretically the same as the power consumption measured by the wattmeter 182. Therefore, the power consumption measured by the wattmeter 182 may be treated as the self-consumption power. However, due to measurement errors of the wattmeter 182 or the like, the power consumption measured by the wattmeter 182 may not match the calculated self-consumption power. In such a case, the smaller value of the power consumption measured by the wattmeter 182 and the calculated self-consumption power may be treated as the self-consumption power.

[0078] Furthermore, if it is possible to obtain all of the output power of the solar cell device 11, the charging or discharging power of the power storage device 12, the output power of the fuel cell device 13, the power consumption of the load device 14, and the charging power of the EV 50, the self-consumption power may be calculated based on these parameters. Even in such a case, the smallest value of the self-consumption power calculated by various methods may be treated as the self-consumption power.

[0079] The self-power consumption determined in the above manner may be used to prove environmental value. The self-power consumption determined in the above manner may be used to prove environmental value, such as green power certificates and J-credits.

[0080] (Power management method) A power management method according to the embodiment will be described below, taking the private power consumption of the home facility 10 as an example.

[0081] 10, in step S11, local control device 16 receives power information from power meters 180 to 182. The process of receiving power information is repeated at predetermined intervals.

[0082] In step S12, EV 50 is connected to charging facility 15. EV 50 may notify charging facility 15 of the vehicle ID of EV 50. EV 50 may notify local control device 16 of the vehicle ID of EV 50. Charging facility 15 may notify EV 50 of the charging facility ID of charging facility 15.

[0083] In step S13, charging equipment 15 notifies local control device 16 that charging of EV 50 has started. Charging equipment 15 may also notify local control device 16 of the charging start time of EV 50. Charging equipment 15 may also notify local control device 16 of the vehicle ID of EV 50.

[0084] In step S14, the local control device 16 monitors the power of the home facilities 10. The local control device 16 monitors at least the power measured by the power meters 180-182.

[0085] In step S15, the connection between EV 50 and charging equipment 15 is disconnected.

[0086] In step S16, charging facility 15 notifies local control device 16 that charging of EV 50 has ended. Charging facility 15 may also notify local control device 16 of the time when charging of EV 50 has ended.

[0087] In step S17, the local control device 16 transmits a message (see FIG. 5) including at least the first information element and the second information element to the management device 30. As described above, the message may include a time information element. The message may also include a power information element.

[0088] In step S18, management device 30 confirms the attribution entity of the environmental value generated by charging EV 50 from solar cell device 11. Specifically, management device 30 confirms whether the first information element and the second information element satisfy the correspondence stored in storage unit 32. Here, if the combination of the first information element and the second information element is stored in storage unit 32, management device 30 identifies the attribution entity according to the correspondence stored in storage unit 32. On the other hand, if the combination of the first information element and the second information element is not stored in storage unit 32, management device 30 does not identify the attribution entity, assuming that the attribution entity is unknown.

[0089] In step S19, if the attributing entity is identified, management device 30 manages the identified attributing entity. Management device 30 manages the identified attributing entity as well as the private power consumption during the time period when EV 50 is charged from solar cell device 11. Management device 30 may manage the power charged from solar cell device 11 to EV 50 as private power consumption.

[0090] 10 has been described regarding the private power consumption of home facility 10, but the power management method shown in FIG. 10 can also be applied to the private power consumption of visited facility 20A. That is, the attribution entity of the environmental value generated by charging EV 50 from solar cell device 21A at visited facility 20A may be identified based on a combination of a first information element that identifies the rights holder of EV 50 and a second information element that identifies the rights holder of solar cell device 21A. When the attribution entity is identified, the environmental value is assigned to the identified attribution entity.

[0091] (Action and effect) In the embodiment, the management device 30 receives a message including the first information element and the second information element, and, based on the first information element and the second information element, identifies the attribution entity of the environmental value generated by charging the EV 50 from the power generation device. With this configuration, it is possible to identify the attribution entity even when the mobility of the EV 50 is taken into consideration.

[0092] In the embodiment, the management device 30 identifies the entity to which the environmental value generated by charging the EV 50 from the power generation device belongs, based on whether the first information element and the second information element satisfy the correspondence stored in the storage unit 32. This configuration allows flexibility in determining the entity to which the environmental value belongs, and also allows the entity to be appropriately identified.

[0093] [Embodiment 2] The second embodiment of the present invention will be described below, focusing mainly on the differences from the first embodiment.

[0094] In the embodiment, a case has been described in which the sender of the message including the first information element and the second information element is the local control device 16 of the home facility 10. In contrast, in the second embodiment, a case will be described in which the sender of the message is the charging facility 15.

[0095] (Power management method) The following describes a power management method according to the second embodiment, taking the private power consumption of the home facility 10 as an example.

[0096] 11, in step S31, local control device 16 receives power information from power meters 180 to 182. The process of receiving power information is repeated at predetermined intervals.

[0097] In step S32, the EV 50 is connected to the charging facility 15. The EV 50 may notify the charging facility 15 of the vehicle ID of the EV 50. The charging facility 15 may notify the EV 50 of the charging facility ID of the charging facility 15.

[0098] In step S33, charging facility 15 notifies local control device 16 that charging of EV 50 has started. Charging facility 15 may also notify local control device 16 of the time when charging of EV 50 will start.

[0099] In step S34, the local control device 16 monitors the power of the home facilities 10. The local control device 16 monitors at least the power measured by the power meters 180-182.

[0100] In step S35, the connection between EV 50 and charging equipment 15 is disconnected.

[0101] In step S36, charging facility 15 notifies local control device 16 that charging of EV 50 has ended. Charging facility 15 may also notify local control device 16 of the time when charging of EV 50 has ended.

[0102] In step S37A, the charging facility 15 transmits a message including at least the first information element and the second information element (see FIG. 5) to the management device 30. That is, the communication unit 31 of the management device 30 receives the message including at least the first information element and the second information element from the charging facility 15. As described above, the message may include a time information element. FIG. 11 illustrates a case where the message does not include a power information element.

[0103] In step S38, management device 30 confirms the attribution entity of the environmental value generated by charging EV 50 from solar cell device 11. Specifically, management device 30 confirms whether the first information element and the second information element satisfy the correspondence stored in storage unit 32. Here, if the combination of the first information element and the second information element is stored in storage unit 32, management device 30 identifies the attribution entity according to the correspondence stored in storage unit 32. On the other hand, if the combination of the first information element and the second information element is not stored in storage unit 32, management device 30 does not identify the attribution entity, assuming that the attribution entity is unknown.

[0104] In step S39, management device 30 inquires of local control device 16 about the amount of self-powered electricity consumed during the time period when EV 50 was charged from solar cell device 11. Management device 30 may inquire of local control device 16 about the charging power from solar cell device 11 to EV 50. Management device 30 receives from local control device 16 a message including a power information element (i.e., the third information element) that specifies the amount of self-powered electricity consumed by the specified facility. That is, the message including the third information element may be separate from the messages including the first information element and the second information element.

[0105] In step S40, if the attributing entity is identified, management device 30 manages the identified attributing entity. Management device 30 manages the identified attributing entity as well as the private power consumption during the time period when EV 50 is charged from solar cell device 11. Management device 30 may manage the power charged from solar cell device 11 to EV 50 as private power consumption.

[0106] 11 has been described regarding the private power consumption of home facility 10, but the power management method shown in Fig. 11 can also be applied to the private power consumption of visited facility 20A. That is, based on a combination of a first information element that identifies a rights holder for EV 50 and a second information element that identifies a rights holder for solar cell device 21A, the entity to which the environmental value generated by charging EV 50 from solar cell device 21A at visited facility 20A belongs may be identified.

[0107] [Embodiment 3] The following describes the third embodiment of the present invention, focusing mainly on the differences from the first embodiment.

[0108] In the embodiment, a case has been described in which the sender of the message including the first information element and the second information element is the local control device 16 of the home facility 10. In contrast, in the third embodiment, a case will be described in which the sender of the message is the EV 50.

[0109] (Power management method) A power management method according to the third embodiment will be described below. Here, the description will be given taking the private power consumption of the home facility 10 as an example. In Fig. 12, the same steps as those in the flow shown in Fig. 11 are denoted by the same reference numerals. The description of the same steps as those in the flow shown in Fig. 11 will be omitted.

[0110] In step S37B, the EV 50 transmits a message (see FIG. 5) including at least the first information element and the second information element to the management device 30. As described above, the message may include a time information element. FIG. 12 illustrates a case where the message does not include a power information element.

[0111] [Embodiment 4] The fourth embodiment of the present invention will be described below, focusing mainly on the differences from the first embodiment.

[0112] In the embodiment, a case where charging power from a power generation device to EV 50 is treated as part of private power consumption is exemplified. In contrast, in the fourth embodiment, a case where charging power from a power generation device to EV 50 is treated as measurable power is described.

[0113] (Home facility) The home facility 10 according to the fourth embodiment will be described below. In Fig. 13, the same components as those in Fig. 2 are denoted by the same reference numerals. The description of the same components as those in Fig. 2 will be omitted.

[0114] As shown in FIG. 13, the home facility 10 includes a power meter 190. The power meter 190 is provided upstream of the charging facility 15 and measures the charging power or discharging power of the EV 50. The power meter 190 may be provided downstream of a device (load device 14 in FIG. 13) that is upstream of the charging facility 15. The power meter 190 may be a power meter certified by a third-party organization.

[0115] In this configuration, the charging power measured by the power meter 190 may be considered to be charging power from the power generation device to the EV 50, as long as it does not exceed the output power of the solar cell device 11 measured by the power meter 181. In other words, it may be considered that the private consumption power of the home facility 10 is preferentially allocated to the EV 50 over devices other than the EV 50 (e.g., load device 14). In this case, the private consumption power allocated to devices other than the EV 50 (e.g., load device 14) is considered to be calculated as the difference between the private consumption power of the home facility 10 and the charging power to the EV 50.

[0116] According to this configuration, the charging power from the power generation device to EV 50 is measured by wattmeter 190. Therefore, it is easy to flexibly set the entity to which the environmental value generated by charging EV 50 from the power generation device belongs.

[0117] [Embodiment 5] The fifth embodiment of the present invention will be described below, focusing mainly on the differences from the first embodiment.

[0118] In the embodiment, the management device 30 does not identify the attributable entity, assuming that the attributable entity is unknown, if the combination of the first information element and the second information element is not stored in the storage unit 32. In the fifth embodiment, a case where the attributable entity is not identified, in other words, a case where charging of the EV 50 from the power generation device is not recognized as self-consumption, will be described.

[0119] In a fifth embodiment, in a case where a third-party power storage device installed in a third-party mobile body not belonging to a specified facility is charged using output power output from a power generation device, the management device 30 does not identify an entity to which the environmental value belongs if the charging of the third-party power storage device is not identified, but identifies an entity to which the environmental value belongs if the charging of the third-party power storage device is identified. Cases in which the charging of the third-party power storage device is identified may include cases in which the charging power to the third-party power storage device can be distinguished from other consumed power, cases in which the entity to which the third-party power storage device belongs is clear, etc. Cases in which the charging of the third-party power storage device is not identified may include cases in which the charging power to the third-party power storage device cannot be distinguished from other consumed power, cases in which the entity to which the third-party power storage device belongs is not clear, etc.

[0120] For example, assume that the predetermined facility is visited facility 20A and solar cell device 21A charges EV 50. In this case, EV 50 is an example of a third-party moving object that does not belong to visited facility 20A. Therefore, the power storage device provided in EV 50 is an example of a third-party power storage device.

[0121] Under these assumptions, the management device 30 identifies the entity to which the environmental value belongs when charging from the solar cell device 21A to the EV 50 is identified, but does not identify the entity to which the environmental value belongs when charging from the solar cell device 21A to the EV 50 is not identified.

[0122] As in the embodiment, a case in which the entity to which the environmental value belongs cannot be identified is when the combination of solar cell device 21A and EV 50 cannot be identified based on the correspondence stored in storage unit 32. Further cases in which the entity to which the environmental value belongs cannot be identified include a case in which the first information element identifying EV 50 cannot be acquired, a case in which the time period in which charging from solar cell device 21A to EV 50 occurred cannot be identified, and a case in which the charging power from solar cell device 21A to EV 50 cannot be identified. In these cases, the charging power from solar cell device 21A to EV 50 may be treated as part of the private power consumption of visited facility 20A.

[0123] On the other hand, in a case where charging of EV 50 from solar cell device 21A is identified, the charging power from solar cell device 21A to EV 50 may be deducted from the self-consumption power of visited facility 20A. However, even in a case where charging of EV 50 from solar cell device 21A is identified, if power is supplied to the specified facility from power grid 110, it is not necessary to calculate the environmental value for the self-consumption power of the specified facility during the time when EV 50 is being charged, and it is not necessary to identify the entity to which the environmental value belongs.

[0124] [Embodiment 6] The sixth embodiment will be described below, focusing mainly on the differences from the sixth embodiment.

[0125] In the sixth embodiment, a description will be given of the creation of a message including at least the first information element and the second information element. In the following, the description will be given taking visited facility 20A as an example of the predetermined facility.

[0126] The message may be created by local control device 26A provided in a predetermined facility. The message may be created by charging equipment 25A as in the above-described second embodiment, or by EV 50 as in the above-described third embodiment. The message may be created by visited facility 20A that has acquired the first information element from EV 50. The message may be created by EV 50 that has acquired the second information element from visited facility 20A.

[0127] The message may be generated when charging of EV 50 is completed. The message may be generated when EV 50 is connected to charging equipment 25A, when charging of EV 50 starts, when the connection between EV 50 and charging equipment 25A is disconnected, or the like.

[0128] The connection between the EV 50 and the charging equipment 25A may be achieved by connecting a charging plug provided on the EV 50 to an outlet of the charging equipment 25A. By connecting the charging plug provided on the EV 50 to the outlet of the charging equipment 25A, a power line is formed between the EV 50 and the charging equipment 25A. By connecting the charging plug provided on the EV 50 to the outlet of the charging equipment 25A, a signal line is formed between the EV 50 and the charging equipment 25A.

[0129] As shown in Fig. 14, detection unit 27A is provided on the power line and signal line formed by the connection between EV 50 and charging facility 25A. As shown in Fig. 15, detection unit 27A includes connection detection unit 271A and charging detection unit 272A. The detection unit may be provided in visited facility 25A or in EV 50. Detection unit 27A detects the connection between EV 50 and charging facility 25A or the charging of EV 50.

[0130] The connection between the EV 50 and charging equipment 25A is detected by connection detection unit 271A included in detection unit 27A. Connection detection unit 271A may be included in either the EV 50 or charging equipment 25A. Connection detection unit 271A may be included on the power line or on the signal line. Connection detection unit 271A may be a current sensor included in the charging plug or outlet. In this case, connection detection unit 271A may determine that the EV 50 and charging equipment 25A are connected when electricity flows through the charging plug or outlet. Connection detection unit 271A may be a switch included in the charging plug or outlet. In this case, connection detection unit 271A may determine that the EV 50 and charging equipment 25A are connected when the switch is pressed. Connection detection unit 271A is not limited to these, and may be any device that can detect that the charging plug and outlet are in contact and ready to exchange electricity. Connection detection unit 271A may also determine that EV 50 and charging facility 25A are connected when a power line or a signal line is formed between EV 50 and charging facility 25A.

[0131] When connection detection unit 271A determines that connection has been established, it may transmit information indicating the connection to any of charging facility 25A, local control device 26A, EV 50, or management device 30 (communication unit 31). The information indicating the connection may include information indicating visited facility 20A and information indicating EV 50. Upon receiving information from connection detection unit 271A, charging facility 25A, local control device 26A, EV 50, and management device 30 (communication unit 31) determine that EV 50 and charging facility 25A are connected. After EV 50 is connected to charging facility 25A, connection detection unit 271A may transmit information indicating the connection to charging facility 25A, local control device 26A, EV 50, and management device 30 (communication unit 31) when charging of EV 50 starts, when the connection between EV 50 and charging facility 25A is disconnected, or when charging of EV 50 is completed. Furthermore, when the connection between EV 50 and charging equipment 25A is disconnected, connection detection unit 271A may transmit information indicating that the connection has been disconnected to charging equipment 25A, local control device 26A, EV 50, and management device 30 (communication unit 31).

[0132] Charging of EV 50 is detected by charging detection unit 272A included in detection unit 27A. Charging detection unit 272A may be included in either EV 50 or charging equipment 25A. Charging detection unit 272A may be included on a power line. Charging detection unit 272A may be a current sensor included in a charging plug or outlet. Charging detection unit 272A may detect charging of EV 50 from a power generation device included in visited facility 20A.

[0133] In this case, charging detection unit 272A may determine that charging of EV 50 is underway based on whether electricity is flowing through the charging plug or outlet. Charging detection unit 272A may determine that charging of EV 50 has started based on whether electricity starts flowing through the charging plug or outlet. Charging detection unit 272A may determine that charging of EV 50 has finished based on whether electricity stops flowing through the charging plug or outlet. Charging detection unit 272A may determine that charging of EV 50 has finished based on whether the amount of current flowing within a certain period of time falls below a predetermined threshold.

[0134] When charging detection unit 272A determines that charging has started, it may transmit information indicating that charging has started to any of charging equipment 25A, local control device 26A, EV 50, or management device 30 (communication unit 31). The information indicating that charging has started may include information indicating visited facility 20A and information indicating EV 50. Charging equipment 25A, local control device 26A, EV 50, and management device 30 (communication unit 31) that receive the information from charging detection unit 272A determine that charging between EV 50 and charging equipment 25A has started.

[0135] When charging detection unit 272A determines that charging has ended, it may transmit information indicating that charging has ended to any of charging facility 25A, local control device 26A, EV 50, or management device 30 (communication unit 31). The information indicating that charging has ended may include information indicating visited facility 20A and information indicating EV 50. Charging facility 25A, local control device 26A, EV 50, and management device 30 (communication unit 31) that receive the information from charging detection unit 272A determine that charging between EV 50 and charging facility 25A has ended.

[0136] When charging detection unit 272A determines that charging has ended, it may transmit information specifying the charging power from the power generation device to EV 50 to any of charging equipment 25A, local control device 26A, EV 50, or management device 30 (communication unit 31). The information specifying the charging power may be a power information element that specifies the amount of private power consumption during the time period when charging from the power generation device to EV 50 was performed, as described below. Alternatively, it may be the amount of charge charged from the power generation device to EV 50.

[0137] Next, for example, consider a case where the local control device 26A creates a message. In this case, the receiving unit (communication unit 31) provided in the management device 30 receives the message from a predetermined facility.

[0138] Local control device 26A acquires the first information element of EV 50 from EV 50. Local control device 26A may acquire the first information element of EV 50 via a signal line between EV 50 and charging facility 25A. Local control device 26A may acquire the first information element of EV 50 via connection between a charging plug and an outlet. Local control device 26A may acquire the first information element of EV 50 when charging of EV 50 is completed. Local control device 26A may acquire the first information element of EV 50 when charging of EV 50 starts when EV 50 is connected to charging facility 25A.

[0139] Local control device 26A may create a message based on information acquired from EV 50. Local control device 26A may create a message by combining a first information element acquired from EV 50 with a second information element managed by charging facility 25A or local control device 26A. When charging of EV 50 is completed, local control device 26A may transmit a message to a receiving unit (communication unit 31) included in management device 30.

[0140] The message may be created when charging of EV 50 is completed. In this case, local control device 26A may acquire information specifying the charging power from the power generation device to EV 50. Local control device 26A may include the information specifying the charging power from the power generation device to EV 50 in the message and send the message to a receiving unit (communication unit 31) provided in management device 30. By local control device 26A including the information specifying the charging power from the power generation device to EV 50 in the message, it becomes possible to identify the attribution entity and simultaneously grasp the trading amount of environmental value.

[0141] Local control device 26A may obtain information specifying the charging power by directly or indirectly calculating it from information managed by local control device 26A. Local control device 26A may also obtain information specifying the charging power from at least one of solar cell device 21A, power meter 280A, power meter 281A, power meter 282A, and charging detection unit 272A. Local control device 26A may obtain information specifying the charging power by performing calculations based on information obtained from them.

[0142] The message may be created when EV 50 is connected to charging facility 25A or when charging of EV 50 begins. In this case, local control device 26A may include in the message a time information element that is an information element that identifies the time period during which charging of EV 50 was performed. In this case, local control device 26A may also send the message to a receiving unit (communication unit 31) included in management device 30 without including information that identifies the charging power in the message.

[0143] In this case, when charging of EV 50 is completed, local control device 26A may transmit a message including information specifying the charging power from the power generation device to EV 50 to a receiving unit (communication unit 31) included in management device 30. At this time, local control device 26A may include a time information element in the message including the information specifying the charging power from the power generation device to EV 50. In this way, by including a time information element in both the message sent earlier and the message sent later including the information specifying the charging power, the control unit can identify the attributing entity even if the messages are sent separately.

[0144] As described above, local control device 26A can obtain the first information element of EV 50 connected to charging equipment 25A through the connection between charging equipment 25A and EV 50, so even if the location of EV 50 changes due to movement of EV 50, local control device 26A can create a message used to identify the belonging entity.

[0145] Even when charging facility 25A creates a message, similar to the example of local control device 26A described above, charging facility 25A may acquire the first information element of EV 50 via a connection between charging facility 25A and EV 50. In this case, charging facility 25A may create a message by combining the first information element acquired from EV 50 with the second information element managed by charging facility 25A or local control device 26A.

[0146] Even when EV 50 creates a message, similar to the example of local control device 26A described above, EV 50 may acquire a second information element managed by a second information element managed by charging facility 25A or local control device 26A from charging facility 25A or local control device 26A via a connection between charging facility 25A and EV 50. EV 50 may create a message by combining the second information element acquired from charging facility 25A or local control device 26A with the first information element managed by EV 50.

[0147] As described above, when visited facility 20A and EV50 are connected, visited facility 20A or EV50 can obtain the first information element or the second information element managed by the connection partner through the connection between charging equipment 25A and EV50, and can create a message that can be used to identify the belonging entity even if the location of EV50 changes due to movement.

[0148] The above example of visited facility 20A may be similarly applied even when a predetermined facility (home facility 10 or visited facility 20) is connected to EV 50. The predetermined facility (home facility 10 or visited facility 20) may also have the same configurations as the detection unit 27A, connection detection unit 271A, and charge detection unit 272A that are provided in visited facility 20A.

[0149] [Other embodiments] Although the present invention has been described by the above-mentioned embodiments, the descriptions and drawings that form part of this disclosure should not be understood to limit the present invention. From this disclosure, various alternative embodiments, examples, and operating techniques will become apparent to those skilled in the art.

[0150] In the embodiment, the case where the moving object is an EV 50 is exemplified. However, the embodiment is not limited to this. The moving object is assumed to move from the home facility 10 to the visiting facility 20 and may be any object that has a power storage device. The capacity of the power storage device is optional.

[0151] In the embodiment, the case where the power generation device that generates environmental value through self-consumption is a solar cell device (solar cell device 11 or solar cell device 21A) has been exemplified. However, the embodiment is not limited to this. The power generation device that generates environmental value through self-consumption may also be a power generation device that outputs electricity using renewable energy. For example, the power generation device that generates environmental value through self-consumption may include one or more power generation devices selected from a wind power generation device, a hydroelectric power generation device, a geothermal power generation device, and a biomass power generation device.

[0152] Although not specifically mentioned in the embodiments, a power storage device installed in a specific facility may be treated as a power generation device that generates environmental value through self-consumption. In such a case, the type of electricity used to charge the power storage device (for example, a power grid, a solar cell device, a fuel cell device, etc.) may be identifiable.

[0153] Although not specifically mentioned in the embodiments, the fuel cell device may be treated as a power generation device that generates environmental value through self-consumption. In such a case, the environmental value generated by the self-consumption of the output power of the fuel cell device may be managed so as to be distinguishable from the environmental value generated by the self-consumption of the output power of the solar cell device.

[0154] In the embodiment, a case where reverse power flow is not recognized for the discharged power of the power storage device has been illustrated. However, the embodiment is not limited to this. A reverse power flow may be recognized for the discharged power of the power storage device.

[0155] In the embodiment, a case where no reverse power flow is recognized for the discharge power of the fuel cell device has been illustrated. However, the embodiment is not limited to this. A reverse power flow may be recognized for the discharge power of the fuel cell device.

[0156] Although not specifically mentioned in the embodiment, charging facility 15, local control device 16, charging facility 25A, local control device 26A, and management device 30 may synchronize their times using a time server. The time server may be an NTP (Network Time Protocol) server or a GPS (Global Positioning System) server (satellite).

[0157] Although no such term is mentioned in the embodiment, the self-power consumption of the home facility 10 may be corrected by a transmission loss occurring in the power line between the power generation device and the EV 50. For example, the transmission loss may be determined by the length of the power line between the power generation device and the EV 50.

[0158] In the embodiment, the local control device is provided in a predetermined facility. However, the embodiment is not limited to this. The local control device may be provided by a cloud service.

[0159] Although not specifically mentioned in the embodiment, the electric power may be an instantaneous value (kW) or an integrated value (kWh) per unit time.

[0160] The entire contents of Japanese Patent Application No. 2019-238536 (filed December 27, 2019) are incorporated herein by reference.

Claims

1. a control unit that determines, when a power storage device provided in a mobile body is charged, whether or not to award an environmental value resulting from charging of the power storage device, based on the output power of the power generation device; The control unit assigns the environmental value to an attribution entity when the right holder for the mobile body and the right holder for the power generation device are associated with the attribution entity.

2. The power management system according to claim 1 , wherein the environmental value is electricity included in the private power consumption of the facility having the power generation device, and is a value generated by charging the power storage device.

3. a step A of determining, when a power storage device provided in a mobile body is charged based on the output power of a power generation device, whether or not to grant an environmental value resulting from the charging of the power storage device; The power management method includes a step of not assigning the environmental value when the rights holder for the mobile body and the rights holder for the power generation device are not associated with the attribution entity, and assigning the environmental value to the attribution entity when the rights holder for the mobile body and the rights holder for the power generation device are associated with the attribution entity.

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