Energy Utilization System

Abstract

An object of the present invention is to provide a fast and efficient charge for an electric vehicle. [Solution] The energy utilization system (1) comprises a shared parking lot (206) and a plurality of residences (2 and 102) located close to each other, a plurality of first natural energy power generation devices (8 and 108) installed on the grounds of the plurality of residences (2 and 102), a second natural energy power generation device (208) installed in the shared parking lot (206), and a power controller (250) that receives power generated from the first natural energy power generation devices (8 and 108) and the second natural energy power generation device (208) and distributes the generated power to batteries (12) of a plurality of electric vehicles (10) parked in the shared parking lot (206).

Description

[Technical Field]

[0001] The present invention relates to an energy utilization system. [Background technology]

[0002] Patent Document 1 discloses a power system that uses advanced energy management technology utilizing the Internet of Things (IoT) to bundle multiple distributed energy resources (DERs) and remotely and centrally control these DERs to function as if they were a single power plant. Stationary batteries and electric vehicles are used as DERs. The power system includes a grid power source, a server, multiple stationary batteries, multiple electric vehicles, multiple electric vehicle service equipment (EVSE), and multiple homes. Some of the homes are equipped with a home energy management system (HEMS) that controls home appliances, while the rest are not equipped with an HEMS. Stationary batteries are installed in the homes equipped with the HEMS, and the charging and discharging of the stationary batteries is controlled by the HEMS. The HEMS controls the charging and discharging of the DERs based on a charging and discharging plan transmitted from a server. EVSE is a power supply device compatible with V2H (Vehicle to Home) or V2G (Vehicle to Grid) that converts AC power supplied from the power grid into DC power to charge the battery of an electric vehicle. It converts DC power discharged from the EV battery (electric vehicle battery) into AC power and supplies power to home appliances. EVSE installed in a home equipped with a HEMS is controlled by the HEMS, while EVSE installed in a home without a HEMS is controlled by the control unit of the electric vehicle.

[0003] Incidentally, the house in Patent Document 1 does not have a solar power generation system installed, but solar power generation systems are widely used to realize private power generation. The electricity generated by the solar power generation system may be charged into a stationary battery or an electric vehicle battery. Because the solar power generation system installed in the house is small in scale, the power generated by the solar power generation system is not very high. Therefore, the solar power generation system may not be able to sufficiently charge the electric vehicle battery or the stationary battery, or the charging speed may be slow. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Publication No. 2024-056241 Summary of the Invention [Problem to be solved by the invention]

[0005] SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a fast and sufficient charge for an electric vehicle. [Means for solving the problem]

[0006] The following reference numerals in parentheses refer to Figures 1 and 2.

[0007] In order to solve the above problems, according to claim 1, An energy utilization system (1), A shared parking lot (206) and several houses (2 and 102) located close to each other; a plurality of first natural energy power generation devices (8 and 108) installed on the premises of the plurality of houses (2 and 102), respectively; a second natural energy power generation device (208) installed in the shared parking area (206); a power controller (250) that receives power generated from the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208) and distributes the generated power to batteries (12) of a plurality of electric vehicles (10) parked in the shared parking lot (206); An energy utilization system (1) is provided, which is characterized by comprising:

[0008] According to claim 1 as described above, a plurality of first natural energy power generation devices (8 and 108) are installed on the premises of a plurality of residences (2 and 102), respectively, and a second natural energy power generation device (208) is installed in the shared parking lot (206), so that the total output of these natural energy power generation devices (8, 108, and 208) is high. The power controller (250) receives the supply of generated power from the natural energy power generation devices (8, 108, and 208) and distributes it to the batteries (12) of the plurality of electric vehicles (10) parked in the shared parking lot (206), so that the batteries (12) of these electric vehicles (10) can be quickly and sufficiently charged.

[0009] According to claim 2, The energy utilization system (1) according to claim 1, Equipped with a stationary battery (256), The power controller (250) also allocates the generated power supplied from the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208) to the stationary battery (256) during the power generation time periods of the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208). An energy utilization system (1) is provided.

[0010] According to claim 2 as described above, the total output of the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208) is high, which contributes to increasing the capacity of the stationary battery (256).

[0011] According to claim 3, The energy utilization system (1) according to claim 2, The power controller (250) discharges the stationary battery (256) during a time period when the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208) are not generating power, and distributes the discharged power to the batteries (12) of the plurality of electric vehicles (10). An energy utilization system (1) is provided.

[0012] According to claim 3 as described above, even if the electric vehicle (10) is not in the shared parking lot (206) during the power generation time period, the battery (12) of the electric vehicle (10) can be charged if the electric vehicle (10) returns to the shared parking lot (206) during the power generation time period. The high total output of the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208) contributes to the large capacity of the stationary battery (256). The large capacity of the stationary battery (256) contributes to the fast and sufficient charging of the battery (12) of the electric vehicle (10).

[0013] According to claim 4, The energy utilization system (1) according to claim 1 or 2, The power supplied from the first natural energy power generation device (8 and 108) to the power controller (250) is surplus power that cannot be consumed by the house (2 and 102). An energy utilization system (1) is provided.

[0014] According to claim 4 as described above, surplus electricity generated by the first natural energy power generation device (8 and 108) that cannot be consumed in the house (2 and 102) can be effectively utilized.

[0015] According to claim 5, The energy utilization system (1) according to claim 1 or 2, a device (46, 146, 166, or 246) for displaying the amount of charge remaining in each of the batteries (12) of the plurality of electric vehicles (10); The energy utilization system (1) further comprises:

[0016] According to the fifth aspect of the invention, the residents of the houses (2 and 102) can know the remaining charge amount of each of the batteries (12) of the plurality of electric vehicles (10).

[0017] According to claim 6, The energy utilization system according to claim 1 or 2, The power controller (250) distributes the power generated by the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208) to the batteries (12) of the plurality of electric vehicles (10) parked in the shared parking lot (206) during the power generation time periods of the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208), and discharges the batteries (12) of the plurality of electric vehicles (10) until the charge amount of the batteries of the plurality of electric vehicles reaches a set value during the non-power generation time periods of the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208), and distributes the discharged power to the plurality of houses (2 and 102). An energy utilization system characterized by the above features is provided.

[0018] According to claim 6 as described above, the electricity generated by the first natural energy power generation device (8 and 108) and the second natural energy power generation device (208) during the power generation time period is consumed in the house (2 and 102) during the subsequent non-power generation time period. [Effects of the Invention]

[0019] The present invention contributes to the rapid and sufficient charging of batteries in electric vehicles. [Brief explanation of the drawings]

[0020] [Figure 1] FIG. 1 is a plan view of the energy utilization system. [Figure 2] FIG. 2 is a block diagram showing the power system of each detached house in the energy utilization system. [Figure 3] FIG. 3 is a block diagram showing the power system of an apartment building in an energy utilization system. [Figure 4] FIG. 4 is a block diagram showing the power system of the parking lot of the energy utilization system. DETAILED DESCRIPTION OF THE INVENTION

[0021] Hereinafter, embodiments will be described with reference to the drawings. Features and technical effects of the embodiments will be understood from the following detailed description and drawings. However, the scope of the present invention is not limited to the embodiments disclosed below. Because the drawings are provided for illustrative purposes only, the scope of the present invention is not limited to the examples in the drawings.

[0022] <1. Energy utilization system> FIG. 1 is a plan view of an energy utilization system 1 installed in a district such as a city block.

[0023] A group of districts, such as a city block, is divided into multiple adjacent lots, and an apartment building 102 and multiple detached houses 2 are built on each of those lots. A shared parking lot 206 is located in the center of the district, and the apartment building 102 and the detached houses 2 are arranged around the shared parking lot 206. A road 300 is laid in the district, and the shared parking lot 206 leads to the road 300. The road 300 is a public road. A gate 209, which marks the boundary between the road 300 and the shared parking lot 206, may be equipped with a gate that opens and closes. Pedestrians can travel between the lots of each of the houses 2, 102 and the shared parking lot 206 via a private road or a public road, and the private road or public road may be open only to pedestrians, or may be open to both pedestrians and vehicles. Vehicles can travel between the lot of each residence 2, 102 and the shared parking lot 206 via a private road or a public road, which may be open only to vehicles or to pedestrians as well. The private road may be open only to residents and permitted persons of the apartment complex 102 and the plurality of detached homes 2, or may be open to anyone, not just residents and permitted persons of the apartment complex 102 and the plurality of detached homes 2. The lot of at least one detached home 2 may be adjacent to the shared parking lot 206, allowing pedestrians, vehicles, or both, to travel directly between the lot of the detached home 2 and the shared parking lot 206. The lot of the apartment complex 102 may be adjacent to the shared parking lot 206, allowing pedestrians, vehicles, or both, to travel directly between the lot of the apartment complex 102 and the shared parking lot 206.

[0024] The detached house 2 is a single-story house or a multi-story house. The skeleton of the detached house 2 is made of wood, reinforced concrete, or steel-reinforced concrete. The skeleton of the detached house 2 may also be a mixed structure that combines two or more of wood, reinforced concrete, and steel-reinforced concrete. The detached house 2 is a property rented to the resident of the detached house 2 or a property owned by the resident of the detached house 2.

[0025] The apartment building 102 is a multi-story condominium. The apartment building 102 may have a basement. The skeleton of the apartment building 102 is made of reinforced concrete, steel-framed reinforced concrete, or wood. The apartment building 102 may be a multi-story mixed structure. A mixed structure has lower floors made of reinforced concrete or steel-framed reinforced concrete, and upper floors made of wood built on top of that. The apartment building 102 may be a condominium building in which condominium ownership is established under the Act on Condominium Ownership, etc., or it may be a single-building building in which no condominium ownership is established. A condominium building is also called a condominium for sale, and a single-building building is also called a rental apartment. The apartment building 102 may have commercial facilities on the lower floors.

[0026] The type of shared parking lot 206 is not important. In the example shown in FIG. 1, the shared parking lot 206 is a flat parking lot. Instead of a flat parking lot, the shared parking lot 206 may be a mechanical multi-story parking lot or a self-propelled multi-story parking lot. The shared parking lot 206 is divided into multiple parking areas and multiple bicycle parking areas, with one automobile being able to park in each parking area and one motorcycle being able to park in each bicycle parking area. Both automobiles and motorcycles are types of transport aircraft. The shared parking lot 206 may have one or more parking areas, with one airborne transport aircraft being able to park in each parking area. Airborne transport aircraft are multi-wing aircraft capable of hovering and are also known as drones. Airborne transport aircraft may be manned or unmanned. The parking areas, bicycle parking areas, and aircraft parking areas are collectively referred to as transport aircraft parking areas. The vehicle parking area may be rented out to outside parties, in which case the residents, management association, or landlord of the apartment complex 102 and the plurality of detached houses 2 may receive money or its equivalent from the tenant of the vehicle parking area. The vehicle parking area is classified into electric vehicle parking area 207 and general vehicle parking area 205. Electric vehicle parking area 207 can be used exclusively to park electric vehicles 10. General vehicle parking area 205 can be used to park general vehicle 299. General vehicle 299 refers to electric vehicles other than electric vehicle 10 or non-electric vehicles. Electric vehicle 10 is an electric four-wheel vehicle, electric two-wheel vehicle, or electric multi-wing vehicle.

[0027] 4, an electric transport 10 includes a chargeable and dischargeable battery 12, an electric motor driven by the power of the battery 12, a transport body that runs or flies using the power of the electric motor, and a control device. The electric transport 10 may also be a plug-in hybrid transport that further includes a prime mover.

[0028] The electric transportation device 10 may be rented out through a rental service or a sharing service. The rental of the electric transportation device 10 may be limited to the residents of the residence 2, 102, or may be open to outsiders as well as the residents of the residence 2, 102. When the electric transportation device 10 is rented out to an outsider, the resident, management association, or landlord of the residence 2, 102, or the rental service provider or sharing service provider of the electric transportation device 10 may receive money or its equivalent from the tenant of the electric transportation device 10. The electric transportation device 10 may be shared by the residents of the residence 2, 102. The electric transportation device 10 may be exclusively owned by any resident of the residence 2, 102. Multiple electric transportation devices 10 may be linked to multiple detached houses 2 and private areas 104, which will be described later.

[0029] The battery 12 may include multiple small batteries, which may be separable and removable from the vehicle body. The number of small batteries in the battery 12 may be increased or decreased. Reducing the number of small batteries contributes to reducing the weight of the electric vehicle 10 and improving the fuel efficiency of the electric vehicle 10. The small batteries in the battery 12 may be replaced with charged small batteries, and such an exchange program may be implemented, or a small battery rental program may be implemented. Casters may be attached to the small batteries in the battery 12 to make them easier to transport.

[0030] The electric transport 10 has electronic equipment 14, such as a navigation device, installed within the vehicle body. The electronic equipment 14 may be detachable from the vehicle body of the electric transport 10 and may be portable.

[0031] The electronic device 14 is connected to an information and communication network such as the Internet. The electronic device 14, a detached house management device 46 (see FIG. 2), a private area management device 146 (see FIG. 3), a common area management device 150 (see FIG. 3), and a parking management device 246 (see FIG. 4), which will be described later, may be capable of communicating with each other. A secure communication protocol such as a VPN (Virtual Private Network) may be adopted for communication between the electronic device 14, the detached house management device 46, the private area management device 146, the common area management device 150, and the parking management device 246.

[0032] The electronic device 14 includes a central processing unit (CPU), a graphics processing unit (GPU), a random access memory (RAM), a read only memory (ROM), a storage device, a communication device, a GNSS positioning device, an input device, a display device, and the like.

[0033] The electronic device 14 has a function to determine the current position of the electric transport 10 based on signals received from multiple satellites. The electronic device 14 has a function to display a map. The electronic device 14 has a function to display the current position of the electric transport 10 on a map. The electronic device 14 has a function to communicate with the control device of the electric transport 10 and obtain from the control device of the electric transport 10 a measured value of the amount of charge remaining in the battery 12. The electronic device 14 has a function to search for a route from the current position of the electric transport 10 to a destination. The electronic device 14 has a function to accumulate an operation history of the electric transport 10. The operation history has a position data sequence in which the positions of the electric transport 10 are arranged in chronological order. The operation history may have a travel distance data sequence in which the distance traveled by the electric transport 10 in a day is arranged in chronological order. The operation history may have a speed data sequence in which the travel speed of the electric transport 10 is arranged in chronological order. The operation history may have an acceleration data sequence in which the acceleration of the electric transport 10 is arranged in chronological order. The operation history may include a remaining charge data string that is a chronological list of measured values ​​of the amount of charge remaining in the battery 12 of the electric transport 10. The operation history may include the operating rate of the electric transport 10. The operating rate is the value obtained by dividing the actual operating hours of the electric transport 10 per day by 24 hours. The actual operating hours of the electric transport 10 per day may be an average value over the past period, and the average value may be an arithmetic average value, a weighted average value, a geometric mean value, a harmonic mean value, a trimmed average value, or a moving average value.

[0034] The electronic device 14 immediately transmits the operation history to the parking management device 246. The difference in operation history refers to the difference between the operation history before and after the update when the operation history is updated. The parking management device 246 accumulates the operation history by storing the difference in operation history for each electric transport 10. The parking management device 246 displays the contents of the operation history for each electric transport 10.

[0035] FIG. 2 is a block diagram showing the power system of each detached house 2. As shown in FIG. 2, in addition to the detached house 2, a natural energy power generation device 8 is installed on the site of each detached house 2. The natural energy power generation device 8 may be installed anywhere within the site of the detached house 2. For example, the natural energy power generation device 8 is installed on the roof or exterior wall of the detached house 2, or is installed in the garden. The roof of the detached house 2 includes the top of the detached house 2.

[0036] The natural energy power generation device 8 generates DC power from natural energy. When the power generation principle of the natural energy power generation device 8 is to generate AC power using an induction motor or the like, as in a wind power generator, the natural energy power generation device 8 has an AC / DC converter that converts the AC power into DC power.

[0037] The natural energy power generation device 8 has a plurality of solar power generation panels that generate DC power from solar energy. The natural energy power generation device 8 may have a power generation device other than the solar power generation panels, such as a wind power generator, in addition to or instead of the solar power generation panels.

[0038] When the natural energy power generation device 8 has a solar power generation panel, the natural energy power generation device 8 generates power during the day and does not generate power at night. The time period during which the natural energy power generation device 8 generates power is called a power generation time period, and the time period during which the natural energy power generation device 8 does not generate power is called a non-power generation time period.

[0039] Each detached house 2 is equipped with a main meter 44, a detached house power controller 50, a private power generation meter 58, a charging meter 59, and a detached house management device 46. The main meter 44, the detached house power controller 50, the private power generation meter 58, the charging meter 59, and the detached house management device 46 may be installed either inside or outside the detached house 2.

[0040] The detached house power controller 50 includes a distribution board, a power conditioner, a switch, meters, a safety circuit, a control circuit, etc. The power conditioner includes a DC / DC converter, a DC / AC converter, an AC / DC converter, etc. The detached house power controller 50 is connected to a natural energy power generation device 8, a commercial power grid 30, and a parking power controller 250 (described below). The detached house power controller 50 is connected to an in-home wiring network laid in the detached house 2. The load 48 and the detached house management device 46 are connected to the in-home wiring network. The detached house power controller 50 receives a supply of DC power generated by the natural energy power generation device 8. The time period during which the detached house power controller 50 receives a supply of power from the natural energy power generation device 8 is a power generation time period. The detached house power controller 50 receives a supply of power allocated by the parking power controller 250. The time period during which the detached house power controller 50 receives a supply of power from the parking power controller 250 is a non-power generation time period. The detached house power controller 50 receives commercial AC power from the power grid 30 .

[0041] The detached house power controller 50 converts DC power supplied from the natural energy power generation device 8 or the parking power controller 250 into AC power and distributes the AC power to the load 48 and the detached house management device 46. The detached house power controller 50 converts DC power supplied from the parking power controller 250 into AC power and distributes the AC power to the load 48 and the detached house management device 46. When a power shortage occurs, the detached house power controller 50 also distributes AC power supplied from the grid power source 30 to the load 48 and the detached house management device 46. During power generation time periods, the power shortage refers to the shortfall when the power generated by the natural energy power generation device 8 falls below the total power consumption of the load 48 and the detached house management device 46. During non-power generation time periods, the power shortage refers to the shortfall when the power supplied from the parking power controller 250 falls below the total power consumption of the load 48 and the detached house management device 46. When surplus power occurs, the detached house power controller 50 supplies the surplus power to the parking power controller 250, which will be described later. The surplus power refers to the amount of power generated by the natural energy power generation device 8 when it exceeds the total power consumption of the load 48 and the detached house management device 46. The current of the power supplied from the detached house power controller 50 to the parking power controller 250 may be either DC or AC. Note that all of the power generated by the natural energy power generation device 8 may be supplied to the parking power controller 250 without being distributed to the load 48 and the detached house management device 46.

[0042] The load 48 and the detached house management device 46 receive power from the detached house power controller 50. The load 48 and the detached house management device 46 operate by consuming the power supplied from the detached house power controller 50. The load 48 is an electrical device such as a lighting fixture, a refrigerator, an air conditioner, a water heater, a communication network device (router, wireless base station, wireless repeater, telephone, etc.), a television, an audio device, a recording device, or a cooking appliance.

[0043] The detached house power controller 50 periodically measures the total power consumption and the total amount of power consumption of the loads 48 and the detached house management device 46. The total power consumption of the loads 48 and the detached house management device 46 is the time integral of the total power consumption. Each time the detached house power controller 50 measures the total power consumption and the total amount of power consumption, it transmits the measurement values ​​of the total power consumption and the total amount of power consumption to the detached house management device 46.

[0044] The main meter 44 periodically measures the power and amount of power supplied from the grid power supply 30 to the detached house power controller 50. The power measured by the main meter 44 is the power shortage. The amount of power measured by the main meter 44 is the time integral of that power shortage. Each time the main meter 44 measures the power and amount of power, it transmits the measured values ​​of the power and amount of power to the detached house management device 46.

[0045] The private power generation meter 58 periodically measures the power and amount of power supplied from the natural energy power generation device 8 to the detached house power controller 50. The power measured by the private power generation meter 58 is the power generated by the natural energy power generation device 8, and the amount of power measured by the private power generation meter 58 is the time integral of that generated power. The private power generation meter 58 transmits the measured values ​​of the power and amount of power to the detached house management device 46 each time it measures the power and amount of power.

[0046] The charging meter 59 periodically measures the power and amount of power supplied from the detached house power controller 50 to the parking power controller 250. The power measured by the charging meter 59 is surplus power and is also power that contributes to charging the electric vehicle 10 or the stationary battery 256. The amount of power measured by the charging meter 59 is the time integral of the surplus power. Each time the charging meter 59 measures the surplus power and amount of surplus power, it transmits the measurement values ​​of the surplus power and amount of surplus power to the detached house management device 46.

[0047] The detached house management device 46 is connected to an information and communication network such as the Internet. The detached house management device 46 is composed of a general-purpose computer system or a dedicated computer system. A general-purpose computer system refers to a computer system such as a mobile phone, smartphone, tablet computer, laptop computer, or desktop computer on which a general-purpose operating system (OS) is installed. Examples of the general-purpose OS include Windows (registered trademark), Android (registered trademark), iOS (registered trademark), macOS (registered trademark), Linux (registered trademark), and Unix (registered trademark). Programs for monitoring, managing, controlling, power monitoring, power management, and power control of the load 48 are installed in the general-purpose OS. A dedicated computer system refers to a computer system installed on the wall of the detached house management device 46 or the like, and specialized for the functions of monitoring, managing, controlling, power monitoring, power management, and power control of the load 48. For example, a Home Energy Management System (HEMS) controller is an example of a dedicated computer system.

[0048] Each time the detached house management device 46 receives a measurement value of total power consumption from the detached house power controller 50, it stores the measurement value of total power consumption in chronological order. As a result, the detached house management device 46 accumulates a data string in which the measurement values ​​of total power consumption consumed by the detached house 2 are arranged in chronological order. Each time the detached house management device 46 receives a measurement value of total power consumption from the detached house power controller 50, it updates and displays the latest measurement value of total power consumption. The detached house management device 46 displays the data string of measurement values ​​of total power consumption in a graph. The graph shows the trend in the measurement value of total power consumption consumed by the detached house 2.

[0049] Each time the detached house management device 46 receives a measurement value of the total power consumption from the detached house power controller 50, it stores the measurement value of the total power consumption in chronological order. As a result, the detached house management device 46 accumulates a data string in which the measurement values ​​of the total power consumption consumed by the detached house 2 are arranged in chronological order. Each time the detached house management device 46 receives a measurement value of the total power consumption from the detached house power controller 50, it updates and displays the latest measurement value of the total power consumption. The detached house management device 46 displays the data string of the measurement values ​​of the total power consumption in a graph. The graph shows the progress of the measurement value of the total power consumption consumed by the detached house 2.

[0050] Each time the detached house management device 46 receives a power measurement value from the main meter 44, it stores the power measurement value in chronological order. As a result, the detached house management device 46 accumulates a data string in which the power measurement values ​​supplied from the grid power source 30 are arranged in chronological order. Each time the detached house management device 46 receives a power measurement value from the main meter 44, it updates and displays the latest power measurement value supplied from the grid power source 30. The detached house management device 46 displays the data string of the power measurement values ​​supplied from the grid power source 30 in a graph. The graph shows the progress of the power measurement values ​​supplied from the grid power source 30.

[0051] Each time the detached house management device 46 receives a measured value of the amount of power from the main meter 44, it stores the measured value of the amount of power in chronological order. As a result, the detached house management device 46 accumulates a data string in which the measured values ​​of the amount of power supplied from the grid power source 30 are arranged in chronological order. Each time the detached house management device 46 receives a measured value of the amount of power from the main meter 44, it updates and displays the latest measured value of the amount of power. The detached house management device 46 displays the data string of the measured values ​​of the amount of power in a graph. The graph shows the trend in the measured values ​​of the amount of power supplied from the grid power source 30. The detached house management device 46 may calculate the daily, monthly, or yearly amount of power based on the data string in which the measured values ​​of the amount of power supplied from the grid power source 30 are arranged in chronological order, and may calculate the daily, monthly, or yearly amount of power purchased from the daily, monthly, or yearly amount of power. The detached house management device 46 may display the daily, monthly, or yearly amount of power purchased. The amount of power purchased may be expressed in currency units or points.

[0052] Each time the detached house management device 46 receives a power measurement value from the private power generation meter 58, it stores the power measurement value in chronological order. As a result, the detached house management device 46 accumulates a data string in which the measurement values ​​of the power generated by the renewable energy power generation device 8 are arranged in chronological order. Each time the detached house management device 46 receives a power measurement value from the private power generation meter 58, it updates and displays the latest measurement value of the power generated by the renewable energy power generation device 8. The detached house management device 46 displays the data string of the measurement values ​​of the power generated by the renewable energy power generation device 8 in a graph. The graph shows the progress of the measurement values ​​of the power generated by the renewable energy power generation device 8.

[0053] Each time the detached house management device 46 receives a measurement value of the amount of power from the private power generation meter 58, it stores the measurement value of the amount of power in chronological order. As a result, the detached house management device 46 accumulates a data string in which the measurement values ​​of the amount of power generated by the natural energy power generation device 8 are arranged in chronological order. Each time the detached house management device 46 receives a measurement value of the amount of power from the private power generation meter 58, it updates and displays the latest measurement value of the amount of power generated by the natural energy power generation device 8. The detached house management device 46 displays the data string of the measurement values ​​of the amount of power generated by the natural energy power generation device 8 in a graph. The graph shows the progress of the measurement values ​​of the amount of power generated by the natural energy power generation device 8.

[0054] Each time the detached house management device 46 receives a power measurement value from the charging meter 59, it stores the power measurement value in chronological order. As a result, the detached house management device 46 accumulates a data string in which the power measurement values ​​supplied from the detached house power controller 50 to the parking power controller 250 are arranged in chronological order. Each time the detached house management device 46 receives a power measurement value from the charging meter 59, it updates and displays the latest measurement value of the power supplied from the detached house power controller 50 to the parking power controller 250. The detached house management device 46 displays the data string of the power measurement values ​​supplied from the detached house power controller 50 to the parking power controller 250 in a graph. The graph shows the progress of the power measurement value supplied from the detached house power controller 50 to the parking power controller 250.

[0055] Each time the detached house management device 46 receives a measured value of the amount of power from the charging meter 59, it stores the measured value of the amount of power in chronological order. As a result, the detached house management device 46 accumulates a data string in which the measured values ​​of the amount of power supplied from the detached house power controller 50 to the parking power controller 250 are arranged in chronological order. Each time the detached house management device 46 receives a measured value of the amount of power from the charging meter 59, it updates and displays the latest measured value of the amount of power supplied from the detached house power controller 50 to the parking power controller 250. The detached house management device 46 displays the data string of measured values ​​of the amount of power supplied from the detached house power controller 50 to the parking power controller 250 in a graph. The graph shows the progress of the measured value of the amount of power supplied from the detached house power controller 50 to the parking power controller 250. The detached house management device 46 may calculate the daily, monthly, or yearly amount of electricity based on a data string in which the measured values ​​of the amount of electricity supplied from the detached house power controller 50 to the parking power controller 250 are arranged in chronological order, and may calculate the daily, monthly, or yearly amount of remuneration or the amount of electricity sold from the daily, monthly, or yearly amount of electricity. The detached house management device 46 may display the daily, monthly, or yearly amount of remuneration or the amount of electricity sold. The amount of remuneration or the amount of electricity sold may be expressed in units of currency or points.

[0056] Figure 3 is a block diagram showing the power system of an apartment building 102. As shown in Figure 3, the apartment building 102 has a plurality of private areas 104 and a common area 105 other than the private areas 104. The private areas 104 are, for example, private dwelling units separated by partition walls. The common areas 105 include an entrance, a common corridor, an elevator hall, an elevator, a common staircase, a common room, a garbage area, a rooftop, a mechanical room, or an electrical equipment room, or a combination of two or more of these.

[0057] In addition to the apartment building 102, a natural energy power generation device 108 is installed on the grounds of the apartment building 102. The natural energy power generation device 108 may be installed anywhere within the grounds of the apartment building 102. For example, the natural energy power generation device 108 is installed on the roof of the apartment building 102, on a balcony railing, in a common garden, on an exterior wall, or on an entrance eaves. Because the apartment building 102 is large, the installation area for the natural energy power generation device 108 is large, and the natural energy power generation device 108 is large. Therefore, the maximum output of the natural energy power generation device 108 is high.

[0058] The natural energy power generation device 108 generates DC power from natural energy. When the power generation principle of the natural energy power generation device 108 is to generate AC power using an induction motor or the like, as in a wind power generator, the natural energy power generation device 108 has an AC / DC converter that converts the AC power into DC power.

[0059] The natural energy power generation device 108 has a plurality of solar power generation panels that generate DC power from solar energy. The natural energy power generation device 108 may have a power generation device other than the solar power generation panels, such as a wind power generator, in addition to or instead of the solar power generation panels.

[0060] The common area 105 is equipped with power receiving equipment 134, a main distribution board 136, a common area meter 164, a common area power controller 150, a private power generation meter 158, a charging meter 159, a common area meter 164, and a common area management device 166. The power receiving equipment 134, the main distribution board 136, the common area meter 164, the common area power controller 150, the private power generation meter 158, the common area meter 164, and the common area management device 166 may be installed either inside or outside the apartment building 102. Each private area 104 is equipped with a private area electrical board 142, a private area meter 144, and a private area management device 146.

[0061] The power receiving equipment 134 includes a transformer, etc. The power receiving equipment 134 receives three-phase AC power from the commercial power system 30, converts the three-phase AC power into low-voltage AC power, and supplies the AC power to the main switchboard 136.

[0062] The main distribution panel 136 has a transformer, a switchgear, a relay, a disconnecting switch, a circuit breaker, a transformer, a switching device, etc. The main distribution panel 136 transforms the power supplied from the power receiving equipment 134 and distributes the transformed power to the common area power controller 150 and the exclusive area panel 142.

[0063] The common area power controller 150 includes a power panel, a lighting panel, a power conditioner, a switch, meters, a safety circuit, and a control circuit. The power conditioner includes a DC / DC converter, a DC / AC converter, and an AC / DC converter. The common area power controller 150 is connected to the natural energy power generation device 108, the grid power supply 30, and the parking power controller 250. The common area power controller 150 is connected to a common area wiring network that is wired to the common area 105. The common area loads 168 and the common area management device 166 are connected to the common area wiring network. The common area power controller 150 is supplied with DC power generated by the natural energy power generation device 108. The time period during which the common area power controller 150 receives power from the natural energy power generation device 108 is the power generation time period. The common area power controller 150 is supplied with power allocated by the parking power controller 250. The time period during which the common area power controller 150 receives power from the parking power controller 250 is a time period during which power is not being generated. The common area power controller 150 receives AC power from the main switchboard 136.

[0064] The common area power controller 150 converts DC power supplied from the natural energy power generation system 108 or the parking power controller 250 into AC power and distributes the AC power to the common area load 168 and the common area management device 166. When a power shortage occurs, the common area detached house power controller 150 also distributes AC power supplied from the main distribution board 136 to the common area load 168 and the common area management device 166. During power generation time periods, the power shortage refers to the shortfall when the power generated by the natural energy power generation system 108 falls below the total power consumption of the common area load 168 and the private area management device 146. During non-power generation time periods, the power shortage refers to the shortfall when the power supplied from the parking power controller 250 falls below the total power consumption of the common area load 168 and the private area management device 146. When surplus power occurs, the common area power controller 150 supplies the surplus power to the parking power controller 250. Surplus power refers to the surplus power when the power generated by the natural energy power generation device 108 exceeds the total power consumption of the common area load 168 and the common area management device 166. The current of the power supplied from the common area power controller 150 to the parking power controller 250 may be either DC or AC. Note that all of the power generated by the natural energy power generation device 108 may be supplied to the parking power controller 250 without being distributed to the common area load 168 and the common area management device.

[0065] The common area load 168 and the common area management device 166 are supplied with power from the common area power controller 150 and consume that power to operate. The common area load 168 is, for example, a light, an elevator, an automatic door, or an air conditioning system.

[0066] The common area power controller 150 periodically measures the total power consumption and the total amount of power consumption of the common area load 168 and the common area management device 166. The total amount of power consumption of the common area load 168 and the common area management device 166 is the time integral of the total power consumption. Every time the common area power controller 150 measures the total power consumption and the total amount of power consumption, it transmits the measurement values ​​of the total power consumption and the total amount of power consumption to the common area management device 166.

[0067] The common area meter 164 periodically measures the power and amount of power supplied from the main distribution board 136 to the common area power controller 150. The power measured by the common area meter 164 is the power shortage. The amount of power measured by the common area meter 164 is the time integral of that power shortage. Each time the common area meter 164 measures the power and amount of power, it transmits the measured values ​​of the power and amount of power to the common area management device 166.

[0068] The private power generation meter 158 periodically measures the power and amount of power supplied from the natural energy power generation device 108 to the common area power controller 150. The power measured by the private power generation meter 158 is the power generated by the natural energy power generation device 108, and the amount of power measured by the private power generation meter 158 is the time integral of that generated power. Each time the private power generation meter 158 measures the power and amount of power, it transmits the measured values ​​of the power and amount of power to the common area management device 166.

[0069] The charging meter 159 periodically measures the power and amount of power supplied from the common area power controller 150 to the parking power controller 250. The power measured by the charging meter 159 is surplus power and is also power that contributes to charging the electric vehicle 10 or the stationary battery 256. The amount of power measured by the charging meter 159 is the time integral of the surplus power. Each time the charging meter 159 measures the surplus power and the amount of surplus power, it transmits the measurement values ​​of the surplus power and the amount of surplus power to the common area management device 166.

[0070] The common area management device 166 is connected to an information and communication network such as the Internet. The common area management device 166 is installed in a management room of the common area 105, for example. The common area management device 166 may be installed in a data center outside the apartment complex 102, and the power source for the common area management device 166 is provided separately. The common area management device 166 is a server host machine configured from a computer system. The common area management device 166 may be configured from a single computer system, or may be configured from multiple computer systems capable of distributed processing or parallel processing. The common area management device 166 may be a cloud computing system.

[0071] Each time the common area management device 166 receives a measured value of total power consumption from the common area power controller 150, it stores the measured value of total power consumption in chronological order. As a result, the common area management device 166 accumulates a data string in which the measured values ​​of total power consumption consumed in the common area 105 are arranged in chronological order. Each time the common area management device 166 receives a measured value of total power consumption from the common area power controller 150, it updates and displays the latest measured value of total power consumption. The common area management device 166 displays the data string of measured values ​​of total power consumption in a graph. The graph shows the trend in the measured value of total power consumption consumed in the common area 105.

[0072] Each time the common area management device 166 receives a measured value of the total power consumption from the common area power controller 150, it stores the measured value of the total power consumption in chronological order. As a result, the common area management device 166 accumulates a data string in which the measured values ​​of the total power consumption consumed in the common area 105 are arranged in chronological order. Each time the common area management device 166 receives a measured value of the total power consumption from the common area power controller 150, it updates and displays the latest measured value of the total power consumption. The common area management device 166 displays the data string of the measured values ​​of the total power consumption in a graph. The graph shows the progress of the measured value of the total power consumption consumed in the common area 105.

[0073] Each time the common area management device 166 receives a power measurement value from the common area meter 164, it stores the power measurement value in chronological order. As a result, the common area management device 166 accumulates a data string in which the power measurement values ​​supplied from the main switchboard 136 to the common area power controller 150 are arranged in chronological order. Each time the common area management device 166 receives a power measurement value from the common area meter 164, it updates and displays the latest measurement value of the power supplied from the main switchboard 136 to the common area power controller 150. The common area management device 166 displays the data string of the power measurement values ​​supplied from the main switchboard 136 to the common area power controller 150 in a graph. The graph shows the progress of the power measurement value supplied from the main switchboard 136 to the common area power controller 150.

[0074] Each time the common area management device 166 receives a measured value of the amount of power from the common area meter 164, it stores the measured value of the amount of power in chronological order. As a result, the common area management device 166 accumulates a data string in which the measured values ​​of the amount of power supplied from the main distribution board 136 to the common area power controller 150 are arranged in chronological order. Each time the common area management device 166 receives a measured value of the amount of power from the common area meter 164, it updates and displays the latest measured value of the amount of power. The detached house management device 46 displays the data string of the measured values ​​of the amount of power in a graph. The graph shows the progress of the measured values ​​of the amount of power supplied from the main distribution board 136 to the common area power controller 150. The common area management device 166 may calculate the amount of power on a daily, monthly, or yearly basis based on the data string in which the measured values ​​of the amount of power supplied from the main distribution board 136 to the common area power controller 150 are arranged in chronological order, and may then calculate the daily, monthly, or yearly amount of power purchased from the daily, monthly, or yearly amount of power. The common area management device 166 may display the electricity purchase amount on a daily, monthly, or yearly basis. The electricity purchase amount may be expressed in currency units or points.

[0075] Each time the common area management device 166 receives a power measurement value from the private power generation meter 158, it stores the power measurement value in chronological order. As a result, the common area management device 166 accumulates a data string in which the power measurement values ​​generated by the natural energy power generation device 108 are arranged in chronological order. Each time the common area management device 166 receives a power measurement value from the private power generation meter 158, it updates and displays the latest measurement value of the power generated by the natural energy power generation device 108. The common area management device 166 displays the data string of the power measurement values ​​generated by the natural energy power generation device 108 in a graph. The graph shows the progress of the power measurement value of the power generated by the natural energy power generation device 108.

[0076] Each time the common area management device 166 receives a measurement value of the amount of power from the private power generation meter 158, it stores the measurement value of the amount of power in chronological order. As a result, the common area management device 166 accumulates a data string in which the measurement values ​​of the amount of power generated by the natural energy power generation device 108 are arranged in chronological order. Each time the common area management device 166 receives a measurement value of the amount of power from the private power generation meter 158, it updates and displays the latest measurement value of the amount of power generated by the natural energy power generation device 108. The common area management device 166 displays the data string of the measurement values ​​of the amount of power generated by the natural energy power generation device 108 in a graph. The graph shows the transition of the measurement value of the amount of power generated by the natural energy power generation device 108.

[0077] Each time the common area management device 166 receives a power measurement value from the charging meter 159, it stores the power measurement value in chronological order. As a result, the common area management device 166 accumulates a data string in which the power measurement values ​​supplied from the common area power controller 150 to the parking power controller 250 are arranged in chronological order. Each time the common area management device 166 receives a power measurement value from the charging meter 159, it updates and displays the latest power measurement value supplied from the common area power controller 150 to the parking power controller 250. The common area management device 166 displays the data string of the power measurement values ​​supplied from the common area power controller 150 to the parking power controller 250 in a graph. The graph shows the progress of the power measurement value supplied from the common area power controller 150 to the parking power controller 250.

[0078] Each time the common area management device 166 receives a measured value of the amount of power from the charging meter 159, it stores the measured value of the amount of power in chronological order. As a result, the common area management device 166 accumulates a data string in which the measured values ​​of the amount of power supplied from the common area power controller 150 to the parking power controller 250 are arranged in chronological order. Each time the common area management device 166 receives a measured value of the amount of power from the charging meter 159, it updates and displays the latest measured value of the amount of power supplied from the common area power controller 150 to the parking power controller 250. The common area management device 166 displays the data string of measured values ​​of the amount of power supplied from the common area power controller 150 to the parking power controller 250 in a graph. The graph shows the progress of the measured value of the amount of power supplied from the common area power controller 150 to the parking power controller 250. The common area management device 166 may calculate the daily, monthly, or yearly amount of power based on a data string in which measurement values ​​of the amount of power supplied from the common area power controller 150 to the parking power controller 250 are arranged in chronological order, and may calculate the daily, monthly, or yearly amount of remuneration or the amount of power sales from the daily, monthly, or yearly amount of power. The common area management device 166 may display the daily, monthly, or yearly amount of remuneration or the amount of power sales. The amount of remuneration or the amount of power sales may be expressed in units of currency or points.

[0079] Each exclusive use area 104 is equipped with an exclusive use area meter 144, an exclusive use area electrical panel 142, and an exclusive use area management device 146. The exclusive use area panel 142 has a circuit breaker, etc. The exclusive use area panel 142 distributes power to an exclusive use area load 148 and an exclusive use area management device 146 connected to the exclusive use area panel 142 via an in-house wiring network laid in the exclusive use area 104.

[0080] The exclusive area load 148 receives power from the exclusive area electrical panel 142 and consumes that power to operate. The exclusive area load 148 is electrical equipment such as lighting fixtures, refrigerators, air conditioners, water heaters, communication network equipment (routers, wireless base stations, wireless repeaters, telephones, etc.), televisions, audio equipment, video recorders, or cooking appliances.

[0081] The exclusive area meter 144 periodically measures the power and amount of power supplied from the main distribution board 136 to the exclusive area panel 142. The power measured by the exclusive area meter 144 is the total power consumed in the exclusive area 104, and the amount of power measured by the exclusive area meter 144 is the time integral of that total power consumption. Each time the exclusive area meter 144 measures the power and amount of power, it transmits the measured values ​​of the power and amount of power to the exclusive area management device 146.

[0082] The private area management device 146 is connected to an information and communication network such as the Internet. The private area management device 146 is composed of a general-purpose computer system or a dedicated computer system. A general-purpose computer system refers to a computer system such as a mobile phone, smartphone, tablet computer, laptop computer, or desktop computer on which a general-purpose operating system (OS) is installed. Examples of the general-purpose OS include Windows (registered trademark), Android (registered trademark), iOS (registered trademark), macOS (registered trademark), Linux (registered trademark), or Unix (registered trademark). The general-purpose OS has installed therein programs for monitoring, managing, controlling, power monitoring, power management, and power control of the private area load 148. A dedicated computer system refers to a computer system installed on the wall of the private area 104 or the like, and is specialized for the functions of monitoring, managing, controlling, power monitoring, power management, and power control of the private area load 148. For example, a Home Energy Management System (HEMS) controller is an example of a dedicated computer system.

[0083] Each time the exclusive unit management device 146 receives a power measurement value from the exclusive unit meter 144, it stores the power measurement value in chronological order. As a result, the exclusive unit management device 146 accumulates a data string in which the measurement values ​​of the total power consumption of the exclusive unit 104 are arranged in chronological order. Each time the exclusive unit management device 146 receives a power measurement value from the exclusive unit meter 144, it updates and displays the latest measurement value of the total power consumption of the exclusive unit 104. The exclusive unit management device 146 displays the data string of the measurement values ​​of the total power consumption of the exclusive unit 104 in a graph. The graph shows the progress of the measurement values ​​of the total power consumption of the exclusive unit 104.

[0084] Each time the exclusive unit management device 146 receives a measured value of the amount of power consumed from the exclusive unit meter 144, it stores the measured value of the amount of power consumed in chronological order. As a result, the exclusive unit management device 146 accumulates a data string in which the measured values ​​of the total amount of power consumed by the exclusive unit 104 are arranged in chronological order. Each time the exclusive unit management device 146 receives a measured value of the amount of power consumed by the exclusive unit 104, it updates and displays the latest measured value of the total amount of power consumed by the exclusive unit 104. The exclusive unit management device 146 displays the data string of the total amount of power consumed by the exclusive unit 104 in a graph. The graph shows the progress of the measured value of the total amount of power consumed by the exclusive unit 104.

[0085] 4 is a block diagram showing the power system of the shared parking lot 206. The shared parking lot 206 is equipped with a natural energy power generation device 208, a self-power generation meter 258, a parking power controller 250, a battery power converter 254, a stationary battery 256, and multiple transport power converters 252.

[0086] The natural energy power generation device 208 generates DC power from natural energy. When the power generation principle of the natural energy power generation device 208 is to generate AC power using an induction motor or the like, as in a wind power generator, the natural energy power generation device 208 has an AC / DC converter that converts the AC power into DC power.

[0087] The natural energy power generation device 208 has a plurality of solar power generation panels that generate DC power from solar energy. The natural energy power generation device 208 may have a power generation device other than the solar power generation panels, such as a wind power generator, in addition to or instead of the solar power generation panels.

[0088] The installation location of the natural energy power generation device 208 does not matter as long as it is installed in the shared parking lot 206. For example, a roof may be installed in the shared parking lot 206, and the natural energy power generation device 208 may be installed on the roof. The roof may be installed so as to cover one or more electric vehicle parking areas 207 from above. The roof may be installed so as to cover one or more general vehicle parking areas 205 from above. If the shared parking lot 206 is a mechanical multi-story parking lot or a self-propelled multi-story parking lot, the natural energy power generation device 208 may be installed on the periphery of the mechanical multi-story parking lot or the self-propelled multi-story parking lot.

[0089] The private power generation meter 258 periodically measures the power and amount of power supplied from the natural energy power generation device 208 to the parking power controller 250. The power measured by the private power generation meter 258 is the power generated by the natural energy power generation device 208, and the amount of power measured by the private power generation meter 258 is the time integral of that generated power. The private power generation meter 258 transmits the measured values ​​of the power and amount of power to the parking management device 246 every time it measures the power and amount of power.

[0090] The parking power controller 250 includes a distribution board, a power conditioner, a switch, meters, a safety circuit, a control circuit, etc. The power conditioner includes a DC / DC converter. The power conditioner may include a DC / AC converter, an AC / DC converter, or both. The parking power controller 250 is connected to the detached house power controller 50, the common area power controller 150, a battery power converter 254, and multiple vehicle power converters 252.

[0091] The parking power controller 250 receives a supply of DC power generated by the natural energy power generation device 208 and adjusts the voltage of the DC power using a DC / DC converter. The parking power controller 250 receives a supply of power from the detached house power controller 50 and the common area power controller 150, and the current of the power may be either DC or AC. When the parking power controller 250 receives a supply of AC power from the detached house power controller 50 and the common area power controller 150, the parking power controller 250 adjusts the AC power to DC power using an AC / DC converter. When the parking power controller 250 receives a supply of DC power from the detached house power controller 50 and the common area power controller 150, the voltage of the DC power is adjusted using a DC / DC converter. During power generation times, such as daytime, the parking power controller 250 distributes power from the natural energy power generation device 208, the detached house power controller 50, and the common area power controller 150 to the battery power converter 254 and the multiple vehicle power converters 252. During power non-generation times, such as nighttime, the parking power controller 250 may receive a supply of discharged power from the battery power converter 254 and distribute the discharged power to the multiple vehicle power converters 252. During power non-generation times, such as nighttime, the parking power controller 250 may receive a supply of discharged power from the multiple vehicle power converters 252 and distribute the discharged power to the multiple house power controllers 50 and common area power controllers 150.

[0092] The parking power controller 250 may receive commercial AC power from the system power supply 30. In this case, when a power shortage occurs, the parking power controller 250 converts the AC power received from the system power supply 30 into DC power and distributes the DC power to the battery power converter 254 and the multiple transport power converters 252.

[0093] A plurality of vehicle power converters 252 are installed in a plurality of electric vehicle parking areas 207. The vehicle power converter 252 is a power conditioner including a bidirectional DC / DC converter, a plug-equipped charge / discharge cable, and a control circuit. The plug-equipped charge / discharge cable is connected to a plug of the electric vehicle 10, thereby connecting the vehicle power converter 252 to the battery 12 of the electric vehicle 10. The vehicle power converter 252 charges and discharges the battery 12 of the transmission vehicle 10. During charging, the vehicle power converter 252 adjusts the voltage of the DC power supplied from the parking power controller 250 using the bidirectional DC / DC converter, and charges the adjusted DC power into the battery 12 of the electric vehicle 10. During times when no power is being generated, such as at night, the vehicle power converter 252 discharges the battery 12 of the electric vehicle 10 under the command of the parking power controller 250, adjusts the voltage of the DC power discharged from the battery 12 of the electric vehicle 10 using a bidirectional DC / DC converter, and supplies the adjusted DC power to the parking power controller 250. The vehicle power converter 252 may have a contactless power feeder installed in the electric vehicle parking area 207 instead of a plug-equipped charge / discharge cable. When the electric vehicle 10 is parked on the contactless power feeder, the vehicle power converter 252 contactlessly charges the battery 12 of the electric vehicle 10 with power supplied from the parking power controller 250. The contactless power feeder may be an electromagnetic coupling type, a magnetic field resonance type, or an electric field coupling type.

[0094] The battery power converter 254 is connected to the stationary battery 256. The battery power converter 254 is a power conditioner including a bidirectional DC / DC converter and a control circuit. The battery power converter 254 charges and discharges the stationary battery 256. When charging the stationary battery 256, the battery power converter 254 adjusts the voltage of the DC power supplied from the parking power controller 250 using the bidirectional DC / DC converter, and supplies the adjusted DC power to the stationary battery 256. When discharging the stationary battery 256, the battery power converter 254 adjusts the voltage of the DC power discharged from the stationary battery 256 using the bidirectional DC / DC converter, and supplies the adjusted DC power to the parking power controller 250.

[0095] The stationary battery 256 may be removable from its installation location. The stationary battery 256 may include multiple small batteries that are separable and removable from their installation location. Casters may be attached to the small batteries of the stationary battery 256 to facilitate portability. The small batteries of the stationary battery 256 may be replaced with uncharged small batteries, and such an exchange program may be implemented, or a small battery rental program may be implemented. The small batteries of the stationary battery 256 may be replaceable with the small batteries of the battery 12. Even when the small batteries of the stationary battery 256 are replaced with the battery 12 of the electric transport 10, the electric motor of the electric transport 10 can be driven by the power of the battery 12. Even when the small batteries of the stationary battery 256 are replaced with the battery 12 of the electric transport 10, the transport power converter 252 can charge and discharge the battery 12. Even if the small battery of the battery 12 of the electric vehicle 10 is replaced with a stationary battery 256 , the battery power converter 254 can charge and discharge the stationary battery 256 .

[0096] The parking power controller 250 periodically measures and monitors the amount of charge remaining in the battery 12 of the electric vehicle 10 connected to the vehicle power converter 252 through the vehicle power converter 252. The parking power controller 250 transmits the measured value of the amount of charge to the parking management device 246 each time the amount of charge is measured.

[0097] The parking power controller 250 periodically measures and monitors the amount of charge remaining in the stationary battery 256 through the battery power converter 254. Each time the parking power controller 250 measures the amount of charge, it transmits the measured value of the amount of charge to the parking management device 246.

[0098] As long as the parking power controller 250, the battery power converter 254, and the stationary battery 256 are installed in the shared parking area 206, the installation locations of the parking power controller 250, the battery power converter 254, and the stationary battery 256 do not matter. For example, a building or a storage facility may be installed in the shared parking area 206, and the parking power controller 250, the battery power converter 254, and the stationary battery 256 may be installed inside the building or the storage facility. The parking power controller 250, the battery power converter 254, and the stationary battery 256 may also be installed under a roof installed in the shared parking area 206.

[0099] The parking management device 246 is connected to an information and communication network such as the Internet. The parking management device 246 may be installed inside a building or storage facility installed in the shared parking area 206. The parking management device 246 may be installed under a roof installed in the shared parking area 206. The parking management device 246 may be installed in a data center outside the shared parking area 206. The parking management device 246 may be a server host machine configured from a computer system. The parking management device 246 may be configured from a single computer system, or may be configured from multiple computer systems capable of distributed processing or parallel processing. The parking management device 246 may be a cloud computing system.

[0100] Each time the parking management device 246 receives a measured value of the amount of charge of the stationary battery 256 from the parking power controller 250, it stores the measured value of the amount of charge in chronological order. As a result, the parking management device 246 accumulates a data string in which the measured values ​​of the amount of charge of the stationary battery 256 are arranged in chronological order. Each time the parking management device 246 receives a measured value of the amount of charge of the stationary battery 256, it updates and displays the latest measured value of the amount of charge. The parking management device 246 displays the data string of the measured values ​​of the amount of charge of the stationary battery 256 in a graph. The graph shows the progress of the measured value of the amount of charge of the stationary battery 256.

[0101] The parking management device 246 and the detached house management device 26 may periodically synchronize the data string of the measured value of the amount of charge of the stationary battery 256. In this case, the detached house management device 46 updates and displays the latest measured value of the amount of charge of the stationary battery 256 each time synchronization is performed. The parking management device 246 and the exclusive use unit management device 146 may periodically synchronize the data sequence of the measured values ​​of the amount of charge of the stationary battery 256. In this case, the exclusive use unit management device 146 may update and display the latest measured value of the amount of charge of the stationary battery 256 each time synchronization is performed. The exclusive use unit management device 146 may also display the data sequence of the measured values ​​of the amount of charge of the stationary battery 256 in a graph. The parking management device 246 and the common area management device 166 may periodically synchronize the data sequence of the measured values ​​of the amount of charge of the stationary battery 256. In this case, the common area management device 166 may update and display the latest measured value of the amount of charge of the stationary battery 256 each time synchronization is performed. The common area management device 166 may also display the data sequence of the measured values ​​of the amount of charge of the stationary battery 256 in a graph.

[0102] Each time the parking management device 246 receives a measurement value of the charge amount of the battery 12 from the parking power controller 250, it stores the measurement value of the charge amount in chronological order. As a result, the parking management device 246 accumulates a data string in which the measurement value of the charge amount of the battery 12 is arranged in chronological order for each electric vehicle 10. Each time the parking management device 246 receives a measurement value of the charge amount of the battery 12, it updates and displays the latest measurement value of the charge amount of the battery 12 for each electric vehicle 10. The parking management device 246 displays the data string of the measurement value of the charge amount of the battery 12 as a graph for each electric vehicle 10. The graph shows the progress of the measurement value of the charge amount of the battery 12.

[0103] The parking management device 246 and the detached house management device 36 may periodically synchronize the data string of the measured value of the charge amount of the battery 12 for each electric vehicle 10. In this case, the detached house management device 46 updates and displays the latest measured value of the charge amount of the battery 12 for each electric vehicle 10 each time synchronization is performed. The parking management device 246 and the exclusive use area management device 146 may periodically synchronize the data sequence of the measured values ​​of the charge amount of the battery 12 for each electric vehicle 10. In this case, the exclusive use area management device 146 may update and display the latest measured value of the charge amount of the battery 12 for each electric vehicle 10 each time synchronization is performed. The exclusive use area management device 146 may also display the data sequence of the measured values ​​of the charge amount of the battery 12 for each electric vehicle 10 in a graph. The parking management device 246 and the common area management device 166 may periodically synchronize the data sequence of the measured values ​​of the charge amount of the battery 12 for each electric vehicle 10. In this case, the common area management device 166 may update and display the latest measured value of the charge amount of the battery 12 for each electric vehicle 10 each time synchronization is performed. The common area management device 166 may also display the data sequence of the measured values ​​of the charge amount of the battery 12 for each electric vehicle 10 in a graph.

[0104] As described above, the parking management device 246 accumulates operation histories by storing differences in operation histories for each electric transport 10. The parking management device 246 and the detached house management device 46 may synchronize the operation histories for each electric transport 10. The parking management device 246 and the private area management device 146 may synchronize the operation histories for each electric transport 10. The parking management device 246 and the common area management device 166 may synchronize the operation histories for each electric transport 10.

[0105] The parking management device 246 stores and manages a daily schedule for each electric vehicle 10. The daily schedule is a destination, a travel route, a travel distance to be traveled by the electric vehicle 10, or a combination of two or more of these. The daily schedule is input by the electronic device 14 or the parking management device 246. When a user operates the electronic device 14 to input a daily schedule for the electric vehicle 10 on which the electronic device 14 is installed, the electronic device 14 acquires the daily schedule and transmits it to the parking management device 246, and the parking management device 246 receives and stores the daily schedule. When a user operates the parking management device 246 to input a daily schedule for any electric vehicle 10 to the parking management device 246, the parking management device 246 acquires and stores the daily schedule.

[0106] The parking management device 246 may display a daily schedule for each electric vehicle 10 . The parking management device 246 and the detached house management device 46 may synchronize the daily schedule for each electric vehicle 10. The parking management device 246 and the private area management device 146 may synchronize the daily schedule for each electric vehicle 10. The parking management device 246 and the common area management device 166 may synchronize the daily schedule for each electric vehicle 10.

[0107] The parking management device 246 executes the following process immediately before the transition from a power generation time period to a non-power generation time period. The following process is executed every day. The parking management device 246 determines the set value of the charge amount for each electric vehicle 10 based on the daily schedule for the next day or the operation history. For example, the farther the destination in the daily schedule for the next day, the larger the set value of the charge amount set for the electric vehicle 10 corresponding to that daily schedule. For example, the longer the travel route in the daily schedule for the next day, the larger the set value of the charge amount set for the electric vehicle 10 corresponding to that daily schedule. For example, the longer the travel distance in the daily schedule for the next day, the larger the set value of the charge amount set for the electric vehicle 10 corresponding to that daily schedule. For example, the higher the utilization rate in the operation history, the larger the set value of the charge amount set for the electric vehicle 10 corresponding to that operation history. For example, the longer the distance from the farthest position from the shared parking lot 206 in the position data sequence in the operation history to the shared parking lot 206, the larger the set value of the charge amount set for the electric vehicle 10 corresponding to that operation history. For example, the higher the average value (arithmetic mean value, weighted mean value, geometric mean value, harmonic mean value, trim mean value, or moving average value) of the travel distance data sequence in the operation history, the higher the set value of the charge amount set in the electric transport 10 corresponding to that operation history. For example, the higher the average value (arithmetic mean value, weighted mean value, geometric mean value, harmonic mean value, trim mean value, or moving average value) of the speed data sequence in the operation history, the higher the set value of the charge amount set in the electric transport 10 corresponding to that operation history. For example, the higher the average value (arithmetic mean value, weighted mean value, geometric mean value, harmonic mean value, trim mean value, or moving average value) of the acceleration data sequence in the operation history, the higher the set value of the charge amount set in the electric transport 10 corresponding to that operation history. For example, the lower the average value (arithmetic mean value, weighted mean value, geometric mean value, harmonic mean value, trim mean value, or moving average value) of the remaining amount data sequence in the operation history, the higher the set value of the charge amount set in the electric transport 10 corresponding to that operation history.

[0108] When the set value of the charging amount is determined based on the daily schedule for the next day, the parking management device 246 may correct the set value of the charging amount for each electric transport 10 based on the operation history, or may correct the set value of the charging amount for each electric transport 10 using a learned model that has been machine-learned based on the operation history. When the set value of the charge amount is determined based on the operation history, the parking management device 246 may correct the set value of the charge amount for each electric transport 10 based on past daily schedules, or may correct the set value of the charge amount for each electric transport 10 using a trained model that has been machine-learned based on past daily schedules. When the set value of the charge amount is determined based on the daily schedule or operation history for the next day, the parking management device 246 may correct the set value of the charge amount for each electric transport 10 based on the forecast weather data for the next day, or may correct the set value of the charge amount for each electric transport 10 based on the weight of the electric transport 10.

[0109] The sum of the set values ​​of the charge amounts for each electric transport 10 is less than or equal to the sum of the measured values ​​of the charge amounts for each electric transport 10. The set values ​​of the charge amounts are not determined based on the daily schedule for the next day or the operation history, and the parking management device 246 may determine the set values ​​of the charge amounts for all electric transports 10 to be equal to each other. Even in this case, the sum of the set values ​​of the charge amounts for each electric transport 10 is less than or equal to the sum of the measured values ​​of the charge amounts for each electric transport 10.

[0110] Next, the parking management device 246 subtracts the set charge amount value from the most recent measured charge amount value for each electric vehicle 10 to determine the difference between the set value and the measured value. If the difference is positive, it means that the battery 12 of the electric vehicle 10 is overcharged. If the difference is zero, it means that the battery 12 of the electric vehicle 10 is properly charged. If the difference is negative, the parking management device 246 corrects the difference to zero.

[0111] Thereafter, when the non-power generation time period arrives, the parking management device 246 transmits the set value of the charge amount for each electric vehicle 10 to the parking power controller 250, and the parking power controller 250 receives and temporarily stores the set value of the charge amount for each electric vehicle 10.

[0112] Next, the parking power controller 250 discharges the battery 12 of the electric vehicle 10 through a vehicle power converter 252 connected to the electric vehicle 10 for which the difference is positive, and receives a supply of power from the vehicle power converter 252. The parking power controller 250 distributes the received power to the multiple detached house power controllers 50 and the common area power controller 150. Therefore, in the detached house 2, the power supplied from the parking power controller 250 to the detached house power controller 50 is consumed by the load 48 and the detached house management device 46. In the apartment building 102, the power supplied from the parking power controller 250 to the common area power controller 150 is consumed by the common area load 168 and the common area management device 166. Note that the parking power controller 250 may distribute power to the battery power controller 254 in addition to the multiple detached house power controllers 50 and the common area power controller 150.

[0113] During the discharge of the battery 12 of the electric vehicle 10 when the difference is positive, the parking power controller 250 measures and monitors, via the vehicle power converter 252, the amount of charge remaining in the battery 12 of the electric vehicle 10 connected to the vehicle power converter 252. When the measured value of the amount of charge of the battery 12 of the electric vehicle 10 reaches a set value, the parking power controller 250 stops discharging the battery 12. The parking power controller 250 continues allocating the discharged power until the discharge of the batteries 12 of all electric vehicles 10 connected to the vehicle power converter 252 has stopped.

[0114] During the design stage before the construction of the energy utilization system 1 described above, an annual energy balance is simulated based on input information, and the power generation capacity of the natural energy power generation devices 8, 108, and 208, the storage capacity of the stationary battery 256, and the storage capacity of the electric vehicles 10 are proposed, and the energy utilization system 1 is designed based on the proposal. The energy utilization system 1 is constructed based on such a design. The input information includes, for example, housing performance, location conditions, weather conditions, equipment specifications, the number of detached houses 2 and private spaces 104, the number of residents in each detached house 2 and private space 104, the lifestyles of the residents of each detached house 2 and private space 104, the number of electric vehicles 10, the specifications of the electric vehicles 10, the driving patterns of the electric vehicles 10, or a combination of two or more of these. Such proposals contribute to understanding the equipment necessary to construct the energy utilization system 1 during the design stage of the energy utilization system 1.

[0115] Regardless of whether the electric vehicle 10 is connected to the vehicle power converter 252 or not, during the day, the power supplied from the natural energy power generation device 8, 108, 208 to the parking power controller 250 is slowly charged to the stationary battery 256 by the parking power controller 250 and the battery power converter 254, and then the electric vehicle 10 is connected to the vehicle power converter 252, and the charging power of the stationary battery 256 is quickly charged to the battery 12 of the electric vehicle 10 by the battery power converter 254, the parking power controller 250, and the vehicle power converter 252, and after the stationary battery 256 is discharged, the power controller 250 and the vehicle power converter 252 may charge the battery 12 of the electric vehicle 10 with power supplied from the system power source 30 as needed. This contributes to solving the problem that the power generated by the natural energy power generation device 8, 108, 208 is low and the power generated by the natural energy power generation device 8, 108, 208 is not enough to quickly charge the battery 12 of the electric transport device 10.

[0116] <2. Summary> (1) Multiple renewable energy power generation devices 8 are installed on the grounds of multiple detached houses 2, a renewable energy power generation device 108 is installed on the grounds of an apartment building 102, and a renewable energy power generation device 208 is installed in the shared parking lot 206, so the total output of these renewable energy power generation devices 8, 108, 208 is high. The parking power controller 250 receives the supply of generated power from the renewable energy power generation devices 8, 108, 208 and distributes it to the batteries 12 of the multiple electric vehicles 10 parked in the shared parking lot 206, so the batteries 12 of these electric vehicles 10 can be charged quickly and sufficiently.

[0117] (2) The total output of the natural energy power generation devices 8,108,208 is high, which contributes to increasing the capacity of the stationary battery 256.

[0118] (3) Even if the electric vehicle 10 leaves the shared parking lot 206 during the power generation time period, if the electric vehicle 10 returns to the shared parking lot 206 during the power generation time period, the battery 12 of the electric vehicle 10 can be charged. The high total output of the natural energy power generation devices 8, 108, 208 contributes to increasing the capacity of the stationary battery 256. The increased capacity of the stationary battery 256 contributes to quickly and sufficiently charging the battery 12 of the electric vehicle 10.

[0119] (4) Surplus electricity generated by the natural energy power generation device 8, 108 that cannot be consumed by the house 2, 102 can be effectively utilized. For example, surplus electricity generated by the natural energy power generation device 8, 108 during a power generation time period is consumed by the house 2, 102 during a subsequent non-power generation time period. Electricity generated by the natural energy power generation device 208 is also consumed by the house 2, 102 during a subsequent non-power generation time period.

[0120] (5) A resident of the detached house 2 can view the display of the detached house management device 46 while remaining in the detached house 2 and understand the remaining charge in each of the batteries 12 of the multiple electric vehicles 10. A resident of the private unit 104 can view the display of the private unit management device 146 while remaining in the private unit 104 and understand the remaining charge in each of the batteries 12 of the multiple electric vehicles 10. A caretaker or the like can view the display of the common area management device 166 and understand the remaining charge in each of the batteries 12 of the multiple electric vehicles 10. A resident of the detached house 2 or the private unit 104 can view the display of the parking management device 246 and understand the remaining charge in each of the batteries 12 of the multiple electric vehicles 10 without returning home.

[0121] (6) Since the electricity generated by the natural energy power generation devices 8,108,208 is used to charge the electric transport vehicle 10, this energy utilization system 1 contributes to promoting carbon neutrality, realizing a decarbonized society, and achieving the Sustainable Development Goals (SDGs). [Explanation of symbols]

[0122] 1 Energy utilization system 2. Detached houses 6 Shared Parking 8,108,208 Natural energy power generation equipment 10 Electric transport aircraft 12 Battery 46 Detached house management device 102 Apartment complex 146 Private area management device 166 Common area management device 206 Shared Parking 246 Parking Management Device 250 Parking Power Controller 256 Stationary Battery

Claims

1. An energy utilization system, A shared parking lot and several houses nearby, a plurality of first natural energy power generation devices installed on the premises of the plurality of houses, respectively; a second natural energy power generation device installed in the shared parking lot; a power controller that receives a supply of generated power from the first natural energy power generation device and the second natural energy power generation device and distributes the supplied generated power to batteries of a plurality of electric vehicles parked in the shared parking lot; An energy utilization system comprising:

2. The energy utilization system according to claim 1, Equipped with a stationary battery, The power controller also allocates the generated power supplied from the first natural energy power generation device and the second natural energy power generation device to the stationary battery during the power generation time periods of the first natural energy power generation device and the second natural energy power generation device. An energy utilization system characterized by:

3. The energy utilization system according to claim 2, The power controller discharges the stationary battery during a time period when the first natural energy power generation device and the second natural energy power generation device are not generating power, and distributes the discharged power to the batteries of the plurality of electric transport vehicles. An energy utilization system characterized by:

4. The energy utilization system according to claim 1 or 2, The power supplied from the first natural energy power generation device to the power controller is surplus power that cannot be consumed by the house. An energy utilization system characterized by:

5. The energy utilization system according to claim 1 or 2, a device for displaying the remaining charge in each of the batteries of the plurality of electric transport vehicles; The energy utilization system further comprises:

6. The energy utilization system according to claim 1 or 2, The power controller distributes the power generated by the first natural energy power generation device and the second natural energy power generation device to batteries of a plurality of electric vehicles parked in the shared parking lot during power generation time periods of the first natural energy power generation device and the second natural energy power generation device, and discharges the batteries of the plurality of electric vehicles until the charge amount of the batteries of the plurality of electric vehicles reaches a set value during non-power generation time periods of the first natural energy power generation device and the second natural energy power generation device, and distributes the discharged power to a plurality of houses. An energy utilization system characterized by:

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