JP7009232B2 - Power systems, power devices, and power system control methods - Google Patents

Description

The present invention relates to a power system, a power device, and a method for controlling the power system.

Conventionally, a power system using a device for supplying and receiving power to and from an electric vehicle is known. For example, Patent Document 1 discloses an electric power system that supplies or receives electric power while an electric vehicle is connected to a house via a charging / discharging device for an electric vehicle.

Japanese Unexamined Patent Publication No. 2016-5388

The power system has room for further improvement.

The present disclosure relates to power systems, power devices, and control devices for power systems that can improve their usefulness.

One aspect of the power system controls a first power device and a second power device capable of transmitting or receiving power to and from a mobile body capable of storing power, and power supply and reception by the power device to the mobile body. It is equipped with a control device. The first power device and the second power device are connected by a DC transmission line. The first power device and the second power device are configured to be connectable to an AC transmission line. In the control device, the first electric power device is connected so as to be able to receive electric power from the first moving body for discharging, and the second electric power device transmits electric power to the second moving body for charging. When enabled, the first power device feeds the DC power received from the first mobile body to the second mobile body, or the AC power supplied from the AC transmission line. It is possible to select and control whether to supply power to the second mobile body or to supply the DC power and the AC power to the second mobile body at the same time. The control device switches a transmission path between the DC transmission line and the AC transmission line. The control device switches the transmission path to the AC transmission line, and supplies electric power from the AC transmission line to the second power device. The control device controls so that the DC power received by the first power device from the first mobile body does not exceed a predetermined threshold value set for the first mobile body.

One aspect of the electric power device is a power device capable of transmitting or receiving electric power to and from a mobile body capable of storing electric power, connected to the moving body to be charged so as to be able to transmit electric power, and other electric power. When there is another moving body that discharges power to which the device is connected to receive power, the other power device either feeds the mobile body the DC power received from the other mobile body or the power. It is possible to select either feeding the AC power supplied from the AC power transmission line connectable to the device to the mobile body, or supplying the DC power and the AC power to the mobile body at the same time.
The electric power device and the other electric power device are connected by a DC transmission line.
The power device and the other power devices are configured to be connectable to an AC transmission line.
The transmission path is switched between the DC transmission line and the AC transmission line.
The transmission path is switched to the AC transmission line, and power is supplied from the AC transmission line to the other power device.
The DC power received by the power device from the mobile body is controlled so as not to exceed a predetermined threshold value set for the mobile body .

One aspect of the power system control method is control of a power system including a first power device and a second power device capable of transmitting or receiving power to and from a mobile body capable of storing power, and a control device. The method. The first power device and the second power device are connected by a DC transmission line. The first power device and the second power device are configured to be connectable to an AC transmission line. In the control method, the first electric power device is connected so as to be able to receive electric power from the first moving body for discharging, and the second electric power device can transmit electric power to the second moving body for charging. When connected, the first power device feeds the DC power received from the first mobile body to the second mobile body, or supplies the AC power supplied from the AC transmission line to the second mobile body. A step controlled by the control device, which allows the user to select whether to supply power to the moving body or to supply the DC power and the AC power to the second moving body at the same time .
The control device is a step of switching a transmission path between the DC transmission line and the AC transmission line.
The control device switches the transmission path to the AC transmission line, and supplies power from the AC transmission line to the second power device.
The control device controls the DC power received by the first power device from the first mobile body so as not to exceed a predetermined threshold value set for the first mobile body.
including.

According to the electric power system, the electric power device, and the control method of the electric power system according to the present disclosure, the usefulness can be improved.

It is a figure which shows the schematic structure of the electric power system which concerns on 1st Embodiment. It is a figure which shows an example of the connection of each functional part in the electric power system of FIG. It is a block diagram which shows an example of the schematic structure of a power generation device. It is a block diagram which shows an example of the schematic structure of the electric power device. It is a block diagram which shows an example of the schematic structure of a control device. It is a sequence diagram which shows an example of the processing in the electric power system of FIG. It is a sequence diagram which shows an example of the processing in the electric power system of FIG. It is a flowchart which shows an example of the process executed by the control device of FIG. It is a figure which shows typically the electric power which is supplied to the 2nd mobile body. It is a figure which shows the example of the power supply to the 2nd moving body. It is a figure which shows the example of the power supply to the 2nd moving body. It is a figure which shows an example of the connection of each functional part in the electric power system which concerns on 2nd Embodiment. It is a figure which shows an example of the connection of each functional part in the electric power system which concerns on 3rd Embodiment. It is a figure which shows the schematic structure of the electric power system which concerns on 4th Embodiment. It is a figure which shows an example of the connection of each functional part in the electric power system of FIG.

Hereinafter, embodiments will be described with reference to the drawings.

(Structure of the electric power system according to the first embodiment)
The electric power system 1 according to the first embodiment will be described with reference to FIGS. 1 and 2. The power system 1 may be installed in any parking space in which the mobile body can be parked. The parking space may include, for example, a parking lot. In the present embodiment, the electric power system 1 will be described as being installed in the parking lot. The parking lot shown in FIG. 1 has two parking spaces in which a moving body can be parked. That is, the parking lot shown in FIG. 1 includes a first parking space Sa and a second parking space Sb.

The mobile body may be composed of any movable device. The mobile body may be accessible to the user. The moving body may include, for example, a vehicle, a ship, a walking robot, and the like. The vehicle may include, for example, an electric vehicle, a hybrid electric vehicle, a gasoline vehicle, a motorcycle, a two-wheeled vehicle, a welfare vehicle, and the like. The mobile body may be driven or steered by the user. At least some of the user operations related to driving or maneuvering the moving object may be automated. The mobile body may be able to move autonomously regardless of the user operation.

In this embodiment, it is assumed that the moving body is an electric vehicle. That is, in the present embodiment, the moving body may be configured to include a battery of any type capable of charging and discharging. For example, the power storage device 20 may include a lead storage battery, a lithium ion battery, a nickel cadmium battery, a nickel hydrogen battery, and the like.

The power system 1 has, as components, a power generation device 10, a power storage device 20, a first power device 30a, a second power device 30b, a control device 40, a first delivery restriction device 50a, and a first. 2. The delivery restriction device 50b and the display device 60 are included. In the present specification, when the first electric power device 30a and the second electric power device 30b are not distinguished, they are hereinafter referred to as the electric power device 30. Similarly, in the present specification, when the first issue restriction device 50a and the second issue restriction device 50b are not distinguished, they are hereinafter referred to as the issue restriction device 50.

The components may be communicably connected to each other via wire or wireless. In the example shown in FIG. 2, for example, as shown by a broken line, the power storage device 20, the first power device 30a, and the second power device 30b are communicably connected to the control device 40. The power generation device 10, the power storage device 20, the first power device 30a, and the second power device 30b may be connected to each other via a wire so as to be able to transmit and receive electric power. In the example shown in FIG. 2, the power generation device 10, the power storage device 20, the first power device 30a, and the second power device 30b are connected by an AC transmission line 70 so as to be able to transmit and receive electric power. .. The AC transmission line 70 may be connected to a commercial power source, for example, as shown in FIG. In this case, it may be possible to sell the power generated by the power generation device 10 to the commercial power source side, charge the power storage device 20 using the power supplied from the commercial power source, and the like. In the example shown in FIG. 2, the first electric power device 30a and the second electric power device 30b are connected by a DC transmission line 80 so as to be able to transmit and receive electric power. When the electric power system 1 includes three or more electric power devices 30, the three or more electric power devices 30 may be connected to each other by a DC transmission line 80 so as to be able to transmit and receive electric power.

In the example shown in FIGS. 1 and 2, two electric power devices 30 and two issue limiting devices 50 are shown, but the quantities of the electric power device 30 and the issue limiting device 50 are not limited to this. For example, the respective quantities of the power device 30 and the delivery restriction device 50 may be equal to the number of moving objects that can be parked in the parking lot where the power system 1 is installed, that is, the number of parking spaces in the parking lot. The quantities of the power generation device 10, the power storage device 20, the control device 40, and the display device 60 may also be arbitrarily determined.

The power generation device 10 generates electricity using arbitrary energy. The energy may include, for example, renewable energies such as sunlight, solar heat, wind power, and hydropower. The power generation device 10 may include, for example, a fuel cell that generates power using hydrogen. In the present embodiment, the power generation device 10 will be described as a photovoltaic power generation device that generates power using solar energy. The details of the power generation device 10 will be described later.

The power storage device 20 stores electric power. The power storage device 20 can discharge the stored power to the AC transmission line 70. The power storage device 20 may be configured to include a battery of any type capable of charging and discharging. For example, the power storage device 20 may include a lead storage battery, a lithium ion battery, a nickel cadmium battery, a nickel hydrogen battery, and the like. For example, the power storage device 20 may store the power generated by the power generation device 10. The power storage device 20 may store the electric power received from the mobile body as described later. The power storage device 20 may include a bidirectional inverter capable of receiving or discharging AC power.

The power device 30 performs at least one of power supply and power reception with and from a parked mobile body. In the present embodiment, "power supply" includes supplying electric power to the mobile body by the electric power device 30. As used herein, "power receiving" includes the power device 30 receiving power from a mobile body. Hereinafter, the amount of electric power supplied from the electric power device 30 to the mobile body is also referred to as a power supply amount. The amount of electric power supplied from the mobile body to the electric power device 30 is also referred to as the amount of electric power received. When power is supplied to the mobile body, the power device 30 may use at least one of a commercial power source, a power generation device 10, and a power storage device 20 as a power source used for power supply. When power is supplied to the mobile body, the power device 30 may use another power device 30 that receives power from the other mobile body. That is, the electric power device 30 may supply the electric power received from at least one of the commercial power source, the power generation device 10, the power storage device 20, and the other electric power device 30 to the mobile body. On the other hand, when the electric power is received from the mobile body, the electric power device 30 stores the electric power received from the mobile body, for example, in the power storage device 20, supplies it to a commercial power source, or transmits it to another power device 30. You can do it. The details of the power device 30 will be described later.

The control device 40 controls the transmission and reception of electric power in the electric power system 1. The control device 40 may control, for example, power transmission and reception between the mobile body and the power device 30. The control device 40 may control, for example, the power received from the commercial power source or the power generation device 10 by the power device 30. The control device 40 may control charging / discharging by the power storage device 20, for example.

The control device 40 may accept payment of a parking fee for a moving object. For example, the control device 40 may accept payment of a fee when a parked mobile body leaves the garage. Details of accepting payment of fees will be described later. The control device 40 may allow the moving object to be delivered when the payment of the fee is detected. In the present embodiment, permitting the delivery of the moving object may include enabling the delivery of the moving object by controlling the operation of the delivery limiting device 50 described later. The details of the control device 40 will be described later.

The delivery restriction device 50 includes any device capable of restricting the exit of a parked moving object. For example, the delivery restriction device 50 shown in FIG. 1 has a movable lock plate installed on the ground. When the parking of the moving object is detected, the delivery restriction device 50 flips up the lock plate with respect to the ground. When the lock plate is flipped up, the moving object is prevented from leaving the warehouse. On the other hand, the warehousing restriction device 50 lowers the lock plate in the flipped state when, for example, the control device 40 permits the moving object to be warehousing. With the lock plate lowered, the moving object can be shipped. However, the delivery restriction device 50 is not limited to the configuration having the lock plate. For example, the delivery restriction device 50 may have a gate that can be opened and closed.

The display device 60 includes any display capable of displaying information. The display may include, for example, a liquid crystal display, an organic EL (Electro Luminescence) display, and the like. The size of the display may be arbitrarily determined. For example, the display may be large enough to be easily visible to the user driving the moving object. The display device 60 may be integrally incorporated in, for example, the support column portion of the gate that can be opened and closed or the power device 30 described above. Details of the information displayed on the display device 60 will be described later.

(Example of using power system)
An example of using the power system 1 by a mobile user will be described. For example, a user who drives a mobile body parks the mobile body in a parking lot where the electric power system 1 is installed.

A user who desires to charge the mobile body may supply electric power to the mobile body from the power device 30 while the mobile body is parked. In other words, the user may cause the power device 30 to supply power to the mobile body. When power is supplied to the mobile, the user pays a fee determined based on, for example, the parking time of the mobile and the amount of power supplied to the mobile when the mobile is delivered. The charge may be, for example, a parking charge based on the parking time plus a power supply charge based on the power supply amount. In this case, the user pays the power supply fee in addition to the parking fee.

On the other hand, a user who thinks that the electric power stored in the mobile body has a margin may supply electric power from the mobile body to the power device 30 while the mobile body is parked. In other words, the user may cause the power device 30 to receive power from the mobile body. When power is received from the mobile body, a reward according to the amount of power received may be given to the user. The content of the reward may be arbitrarily determined. In the present embodiment, the reward will be described as, for example, a reduction in the fee payable by the user when the mobile object is to be delivered. For example, the user pays a fee determined based on the parking time of the mobile body and the amount of power received from the mobile body when the mobile body is discharged. For example, the charge may be the parking charge based on the parking time minus the power reception charge based on the amount of power received. In this case, the user pays the difference between the parking fee and the power receiving fee. When the power device 30 receives power from the mobile body, the desired amount of reward may be set by the user within the range of the power amount that can be supplied from the mobile body to the power device 30. .. In this case, an electric power amount corresponding to the set amount of the reward may be supplied from the mobile body to the electric power device 30. The user may cause the power device 30 to receive power from the mobile body in response to a request for supplying power to the power device 30 for reasons such as peak cut.

The content of the reward is not limited to the above-mentioned example. For example, the reward may include money, virtual currency, points available for a given service, and the like. For example, the reward may include the right to reduce the user's payment fee at the facility associated with the parking lot where the power system 1 is installed. The facility may include commercial facilities such as restaurants and electric mass retailers. The awarding of the reward may be executed, for example, by issuing a ticket corresponding to the reward. The reward may be given by storing electronic data corresponding to the reward in association with the user's identification information.

In this embodiment, the reward is given by the control device 40. In another embodiment, the reward may be given by an external server capable of communicating with the control device 40 via a communication network such as the Internet. For example, when the user clicks the clearing start button in the application of the smartphone, the power device 30 ends the power receiving operation in response to the communication from the external server. The power device 30 notifies the external server of the amount of power received. The external server creates a code image such as a reduced barcode or QR code (registered trademark) according to the notified amount of power received and sends it to the user's smartphone. The user can receive a reduction in payment by presenting the code image displayed on the smartphone, for example, at the time of payment of meals or product purchases.

In this way, the user who uses the electric power system 1 can make the electric power device 30 supply power to the mobile body while the mobile body is parked. Therefore, it is possible to realize a power system 1 that is highly convenient for a user who wants to charge a mobile body. Further, the user can make the power device 30 receive power from the mobile body while the mobile body is parked. Therefore, it is possible to realize a power system 1 that is highly convenient for a user who wants to obtain a reward by using the surplus power of the mobile body. The electric power system 1 can be used, for example, when the electric power charged in the mobile body by the surplus electric power of the solar power generation at home is used. Further, since the use of the electric power stored in the mobile body is promoted, the utilization efficiency of the electric power is improved for the user. It can also motivate the user to move to the parking space where the power system 1 is installed. Therefore, for example, the economic activity of the user in the facility related to the parking space can be activated.

(Configuration of power generation equipment)
The configuration of the power generation device 10 will be described in detail with reference to FIG. The power generation device 10 includes a power generation unit 11, an output unit 12, a sensor unit 13, a control unit 14, a DC / DC conversion unit 15, and a DC / AC conversion unit 16.

The power generation unit 11 includes any device capable of generating power. The power generation unit 11 may include, for example, a solar cell.

The output unit 12 outputs the electric power generated by the power generation device 10 to the AC transmission line 70.

The output unit 12 includes a DC / DC conversion unit 15. The output unit 12 adjusts the generated power of the power generation unit 11 by using the DC / DC conversion unit 15. For example, the output unit 12 may adjust the generated power of the power generation unit 11 based on the MPPT (Maximum Power Point Tracking) control by the control unit 14 as described later. The output unit 12 outputs the adjusted generated power.

The output unit 12 further includes a DC / AC conversion unit 16. The DC / AC conversion unit 16 converts the DC power output by the DC / DC conversion unit 15 into AC power. As shown in FIG. 2, the DC / AC conversion unit 16 is connected to the AC transmission line 70. The electric power generated by the power generation device 10 is supplied to the AC transmission line 70 from the DC / AC conversion unit 16 as AC power.

The sensor unit 13 includes one or more arbitrary sensors or detection mechanisms. For example, the sensor unit 13 may include a power sensor. The sensor unit 13 detects the generated power output from the output unit 12 by using a power sensor installed between the output unit 12 and the AC transmission line 70.

The control unit 14 includes one or more processors. The processor may include a general-purpose processor and a dedicated processor specialized for a specific process. The control unit 14 controls the operation of the entire power generation device 10. For example, the control unit 14 may control the DC / DC conversion unit 15 of the output unit 12 to perform MPPT control of the power generation unit 11. The control unit 14 may supply the generated power output from the output unit 12 to the power storage device 20. The control unit 14 may notify the power device 30 and the control device 40 of the generated power detected by the sensor unit 13 (in other words, the output power after power conversion).

(Structure of electric power device)
The configuration of the power device 30 will be described in detail with reference to FIG. The power device 30 includes a communication unit 31, a sensor unit 32, a storage unit 33, a control unit 34, and an input / output unit 35.

The communication unit 31 may include a first interface for transmitting / receiving information and / or power to / from an external device. The first interface may include a communication module, a connector, or the like corresponding to any standard for supplying and receiving power between the power device 30 and the mobile body. The standard may include standards such as CHAdeMO® and USB®. For example, the power device 30 may be connected to the mobile body via the communication unit 31. The connection between the power device 30 and the mobile body may be made in a contact type or a non-contact type. The transmission and reception of electric power between the power device 30 and the mobile body may be performed automatically or in response to a user operation. In the present embodiment, the communication unit 31 can transmit and receive arbitrary information and / or electric power to and from the mobile body via the first interface. The communication unit 31 may include a second interface for transmitting / receiving information to / from an external device. The second interface may include a communication module corresponding to any communication standard, for example via wired or wireless. In the present embodiment, the communication unit 31 can send and receive arbitrary information to and from the control device 40 via the second interface.

The sensor unit 32 includes one or more sensors or detection mechanisms. For example, the sensor unit 32 may include a power sensor and a remaining capacity sensor. The sensor unit 32 uses a power sensor to detect the amount of power supplied to the moving body and the amount of power received from the moving body. The sensor unit 32 detects the remaining capacity of the power storage device 20 by using the remaining capacity sensor. Any algorithm can be used to detect the remaining capacity. For example, a remaining capacity estimation algorithm such as a current integration method or an open circuit voltage method may be adopted for detecting the remaining capacity.

The storage unit 33 includes one or more memories. For example, the storage unit 33 may include a semiconductor memory, a magnetic memory, an optical memory, or the like. The storage unit 33 may function as, for example, a primary storage device or a secondary storage device. The storage unit 33 may store arbitrary information used for the operation of the power device 30.

The control unit 34 includes one or more processors. The control unit 34 controls the operation of the entire power device 30. For example, when the communication unit 31 and the parked mobile body are connected, the control unit 34 transmits a signal regarding the content of the user operation to the power device 30 to the control device 40. The control unit 34 may supply power or receive power to and from the mobile body based on the signal received from the control device 40.

The input / output unit 35 inputs / outputs electric power based on the control of the control unit 34.

The input / output unit 35 includes a DC / DC conversion unit 36. The input / output unit 35 uses the DC / DC conversion unit 36 to adjust the voltage values of the electric power supplied to the mobile body and the electric power received from the mobile body. When the power device 30 receives power from another power device 30, the input / output unit 35 receives the power supplied from the DC transmission line 80 in the DC / DC conversion unit 36. The electric power device 30 supplies the electric power received in this way from the DC / DC converter 36 to the mobile body. When the electric power received from the mobile body is supplied to another electric power device 30, the electric power device 30 supplies electric power to the DC transmission line 80 from the DC / DC converter 36. At this time, the DC / DC converter 36 may adjust the voltage value.

The input / output unit 35 further includes an AC / DC conversion unit 37. The AC / DC conversion unit 37 converts the AC power supplied from the AC transmission line 70 into DC power. The DC power converted by the AC / DC conversion unit 37 has a voltage value adjusted by the DC / DC conversion unit 36, and is supplied to the moving body from the DC / DC conversion unit 36.

The input / output unit 35 further includes a DC / AC conversion unit 38. The DC / AC conversion unit 38 converts the DC power received from the mobile body by the power device 30 into AC power. For example, the voltage value of the electric power received from the mobile body by the electric power device 30 is adjusted by the DC / DC converter 36. The DC power whose voltage value has been adjusted is converted into AC power by the DC / AC conversion unit 38 and supplied to the AC transmission line 70.

(Control device configuration)
The configuration of the control device 40 will be described in detail with reference to FIG. The control device 40 includes a communication unit 41, a sensor unit 42, a storage unit 43, a control unit 44, an input unit 45, and a display unit 46.

The communication unit 41 may include a second interface for transmitting / receiving information to / from an external device. In the present embodiment, the communication unit 41 can transmit and receive arbitrary information to and from the power generation device 10, the power device 30, the delivery restriction device 50, and the display device 60 via the second interface.

The sensor unit 42 includes one or more sensors or detection mechanisms. For example, the sensor unit 42 may include a sensor having an arbitrary configuration capable of detecting the receipt of a moving object. The sensor may be configured to use, for example, a coil embedded in the ground, or may be configured to use an image pickup device such as a camera. The sensor unit 42 can detect the warehousing of a moving object by using the parking sensor. For example, when the sensor unit 42 uses a coil, the sensor unit 42 may detect the warehousing of the moving body by changing the magnetic force generated in the coil depending on the presence or absence of the moving body. For example, when the sensor unit 42 is configured to use an image pickup device such as a surveillance camera, the sensor unit 42 may detect the warehousing of a moving object by image analysis. The control unit 44, which will be described later, may determine the presence or absence of a moving body.

The storage unit 43 includes one or more memories. The storage unit 43 may function as, for example, a primary storage device or a secondary storage device. The storage unit 43 may store arbitrary information used for the operation of the control device 40.

The control unit 44 includes one or more processors. The control unit 44 manages the entire power transmission / reception in the power system 1. For example, the control unit 44 manages power supply and power reception processing in the power device 30. Specifically, the control unit 44 transmits a signal for executing power feeding or power receiving processing to the power device 30. The control unit 44 may manage the charging and discharging processing in the power storage device 20. The details of the power supply or power receiving process controlled by the control unit 44 will be described later.

The control unit 44 controls the operation of the entire control device 40. For example, the control unit 44 may start measuring the parking time of the moving body when the sensor unit 42 detects the warehousing of the moving body. The control unit 44 may end the measurement of the parking time of the moving body and determine the parking time of the moving body, for example, in response to a user operation on the control device 40.

The control unit 44 determines the charge to be paid by the user of the mobile body based on the parking time of the mobile body and the power supply amount or the power reception amount notified from the electric power device 30.

Specifically, when power is supplied to the mobile body, the control unit 44 determines the charge to be paid by the user by, for example, adding the power supply charge based on the power supply amount to the parking charge according to the parking time. You may. For example, the longer the parking time, the higher the parking fee may be. The larger the power supply amount, the higher the power supply charge may be.

On the other hand, when power is received from the mobile body, the control unit 44 may determine the charge to be paid by the user by, for example, subtracting the power reception charge based on the amount of power received from the parking charge. For example, the larger the amount of power received, the higher the power receiving charge may be. When the power receiving fee exceeds the parking fee, the control unit 44 may give the mobile user a reward according to the value obtained by subtracting the parking fee from the power receiving fee. For example, the larger the value obtained by subtracting the parking fee from the power receiving fee, the higher the value of the reward may be. Specifically, the larger the value obtained by subtracting the parking fee from the power receiving fee, the more money, virtual currency, or points given to the user as a reward may be increased.

When the payment of the determined fee is detected, the control unit 44 permits the delivery of the moving object. Specifically, the control unit 44 may allow the moving object to be delivered, for example, by transmitting an instruction to the delivery limiting device 50 to release the restriction on the moving object to be delivered.

The control unit 44 may transmit a display instruction for displaying arbitrary information on the display device 60 to the display device 60. The information may include information indicating an amount to be paid by the user, or may include information indicating a power supply charge per unit electric energy amount. The information may include information indicating the power receiving charge per unit power amount of the power received from the mobile body. As described above, the display device 60 includes a display having a size that can be easily visually recognized by a user who is driving a moving body. Therefore, the user who is driving the moving body can determine whether or not to park the moving body after visually recognizing the information displayed on the display device 60. Therefore, the convenience of the electric power system 1 is further improved. The display device 60 may be provided in each power device 30.

The input unit 45 receives an operation input from the user, and is composed of, for example, an operation button (operation key). The input unit 45 may be configured by a touch panel, and an operation key for receiving an operation input from the user may be displayed on a part of the display device to accept the touch operation input by the user. Further, the application software installed in the user's smartphone in advance may communicate with the communication unit 41 to perform operation input. After the mobile body is stored, the user who desires to charge the mobile body can input from the input unit 45, for example, to make the mobile body supply power from the power system 1. A user who wishes to supply electric power from the mobile body to the electric power system 1 shall input an input for executing power supply from the mobile body to the electric power system 1 from, for example, the input unit 45 after the mobile body is stored. Can be done.

The display unit 46 is a display device such as a liquid crystal display, an organic EL display, or an inorganic EL display. The display unit 46 displays predetermined information. The display unit 46 may display, for example, a parking fee, a power supply fee, a power reception fee, and the like. The information displayed by the display unit 46 is not limited to this.

(Power supply and power reception processing in the power system)
Next, the power supply and power receiving processing in the power system 1 will be described in detail with reference to FIGS. 6 and 7. 6 and 7 are sequence diagrams showing an example of processing in the power system 1. At the start of the sequence of FIG. 6, it is assumed that both the first parking space Sa and the second parking space Sb of the parking lot shown in FIG. 1 are vacant. The sequence of FIG. 7 is executed following the sequence of FIG.

It is assumed that the second mobile body EV2 is parked in the second parking space Sb. In this case, the sensor unit 42 of the control device 40 detects the warehousing of the moving object in the second parking space Sb (step S11). The user may connect the second mobile body EV2 stored in the second parking space Sb to the second electric power device 30b so as to be able to transmit and receive electric power. It should be noted that in the connection between the mobile body and the electric power device 30, both power transmission and reception are not necessarily possible. In the connection between the mobile body and the electric power device 30, only one of transmission and reception may be possible depending on the required processing. In the present specification, when the mobile body and the electric power device 30 are connected, both power transmission and power reception are possible, which will be described below.

Then, the control unit 44 of the control device 40 transmits a signal from the communication unit 41 to the second delivery restriction device 50b to execute the delivery restriction (step S12).

The second delivery restriction device 50b restricts the delivery of the second mobile EV2 based on the signal received from the control device 40 (step S13).

When the delivery is restricted, the control device 40 requests, for example, the user to input the desired process. For example, the control device 40 causes the display unit 46 to display a screen requesting input of the process desired by the user. The process desired by the user includes, for example, a power supply process for the second mobile EV2 and a power receiving process from the second mobile EV2. The user can input a desired process from, for example, the input unit 45.

The control device 40 receives an operation input to the input unit 45 from the user of the second mobile EV2 (step S14). Here, it is assumed that the control device 40 receives an input for executing power supply from the power system 1 to the second mobile body EV2 by the user. At this time, the control device 40 may accept input of information regarding power supply to the second mobile body EV2. The information regarding the power supply may include, for example, the power supply time, the power supply amount, or the power supply amount. The amount of power supplied here corresponds to the amount of charge of the second mobile EV2. The control device 40 may display information (hereinafter, also referred to as “power transmission support information”) that supports input of information related to power supply on the display unit 46. The power transmission support information may include, for example, information indicating the relationship between the power supply time to the second mobile body EV2, the power supply amount, and the power supply amount. Transmission support information may be displayed in the form of tables or graphs. The user can input information regarding power supply based on, for example, the power transmission support information displayed on the display unit 46.

When the control device 40 receives an input for executing power supply to the second mobile body EV2 from the user of the second mobile body EV2, the control device 40 determines a power transmission path in the power supply (step S15). Here, the control device 40 determines the supply source of the electric power to be supplied to the second mobile body EV2 as the power transmission path. The details of the method of determining the power transmission route will be described later. Here, it is assumed that the control device 40 receives power from the AC transmission line 70 to the second power device 30b and supplies power to the second mobile EV2. The control device 40 may determine whether to receive power from a commercial power source, a power generation device 10, or a power storage device 20. If the power transmission path in the current power supply is different from the power transmission path determined in step S15, the control device 40 may execute a process of changing the power transmission path in advance before shifting to step S16.

The control device 40 transmits a signal for starting power supply to the second mobile body EV2 to the second power device 30b (step S16).

When the second power device 30b receives the signal for starting the power supply from the control device 40, the second power device 30b starts the power supply to the second mobile body EV2 (step S17).

Next, it is assumed that the first mobile body EV1 is parked in the first parking space Sa. In this case, the sensor unit 42 of the control device 40 detects the warehousing of the moving object in the first parking space Sa (step S18). The user may connect the first mobile body EV1 stored in the first parking space Sa to the first electric power device 30a so as to be able to transmit and receive electric power.

Then, the control unit 44 of the control device 40 transmits a signal from the communication unit 41 to the first delivery restriction device 50a to execute the delivery restriction (step S19).

The first delivery restriction device 50a restricts the delivery of the first mobile body EV1 based on the signal received from the control device 40 (step S20).

When the delivery is restricted, the control device 40 requests, for example, the user to input the desired process. The user can input a desired process from, for example, the input unit 45.

The control device 40 receives an operation input from the user of the first mobile EV1 to the input unit 45 (step S21). Here, it is assumed that the control device 40 receives an input for causing the power system 1 to receive power from the first mobile body EV1 by the user. At this time, the control device 40 may accept input of information regarding power reception from the first mobile body EV1. The information regarding power reception may include, for example, the power reception time, the power reception amount, or the power reception amount. The amount of power received here corresponds to the amount of discharge of the first mobile body EV1. The control device 40 may display information (hereinafter, also referred to as “power receiving support information”) that supports input of information related to power reception on the display unit 46. The power receiving support information is, for example, information indicating the relationship between the power receiving time to the first mobile EV1 and the power received amount and the power received amount, or the power receiving amount and the remaining amount of power of the first mobile EV1 after the power receiving process. It may include information indicating the relationship between and the travelable distance with the remaining amount. The power receiving support information may be displayed in the form of a table or a graph. The user can input information related to power reception, for example, based on the power reception support information displayed on the display unit 46.

Here, a specific example of the power receiving support information will be further described. For example, it is assumed that the stored amount (remaining amount) of the battery included in the first mobile EV1 is 25 kWh. Further, it is assumed that the distance that the first mobile body EV1 can travel with a power amount of 1 kWh is 4 km to 10 km. Here, it is assumed that the user of the first mobile EV1 inputs a power received amount of 20 kWh to the control device 40 when the first power device 30a receives power as information regarding power receiving. In this case, the control device 40 calculates the amount of electricity stored in the battery after the power receiving process. Here, the control device 40 calculates that the stored amount of the battery after the power receiving process is 5 kWh. Then, the control device 40 calculates the distance that the first mobile body EV1 can move based on the amount of electricity stored after the power receiving process. Here, the control device 40 calculates that the distance that the first mobile body EV1 can move is 20 km to 50 km based on the amount of electricity stored after the power receiving process. The control device 40 displays, for example, the calculated movable distance on the display unit 46 as power receiving support information. Here, the control device 40 displays on the display unit 46 information indicating that the first mobile body EV1 can move from 20 km to 50 km after receiving power. The control device 40 may further display a movable range from the parking lot where the electric power system 1 is installed as power receiving support information on a map based on the calculated movable distance.

For example, it is assumed that the stored amount (remaining amount) of the battery included in the first mobile EV1 is 25 kWh. Further, it is assumed that the distance that the first mobile body EV1 can travel with a power amount of 1 kWh is 4 km to 10 km. Further, it is assumed that the power receiving charge in the power system 1 is set to 20 yen per 1kWh. Here, it is assumed that the user of the first mobile EV1 inputs 500 yen worth of electric power to the control device 40 when the first electric power device 30a receives electric power as information regarding power reception. In this case, the control device 40 calculates the received power amount based on the power receiving charge input by the user. Here, the control device 40 calculates that the amount of power received is 25 kWh. Next, the control device 40 determines whether or not the calculated power receiving amount is an appropriate power receiving amount. For example, whether or not the amount of power received is appropriate may be determined based on, for example, the distance that the first mobile body EV1 can travel after the power receiving process. For example, here, it is assumed that the threshold value of the power received amount is set to the power received amount at which the distance that the first mobile body EV1 can move after the power receiving process is 40 km. The control device 40 determines whether or not the calculated power receiving amount is an appropriate power receiving amount based on the comparison between the stored amount of the battery after the power receiving process and the threshold value. Here, the threshold value is 10 kWh because the amount of power received is 10 kWh when the distance that the first mobile body EV1 can move is 40 km.

The control device 40 first calculates the amount of stored electricity after the power receiving process. Here, it is calculated that the amount of stored electricity after the power receiving process is 0 kWh. The control device 40 determines whether or not the amount of stored electricity after the power receiving process is equal to or greater than the threshold value. When the stored amount after the power receiving process is equal to or greater than the threshold value, the control device 40 determines that the amount of power received by the user to be received by the first power device 30a is appropriate. When the stored amount after the power receiving process is less than the threshold value, the control device 40 determines that the amount of power received by the user to be received by the first power device 30a is not appropriate. In the example shown here, the amount of stored electricity after the power receiving process is 0 kWh and the threshold value is 10 kWh. judge. In particular, in the example here, since the amount of stored electricity after the power receiving process is 0 kWh, if the power receiving process is executed, the first mobile body EV1 cannot move after the power receiving process. As described above, when the control device 40 determines that the amount of power received to be received by the first power device 30a is not appropriate, the control device 40 does not execute the power receiving process, and the amount of power received is appropriate as the power receiving support information. Information for notifying that it is not may be displayed on the display unit 46. In this case, the control device 40 may display a request for re-input of information regarding the amount of received power. In response to the re-entry, the user can re-enter the information regarding the amount of power received. The control device 40 may indicate in advance the range of the amount of power received that can be selected by the user as the power receiving support information on the display unit 46. The range of the amount of power received that can be selected may be a range in which the amount of stored electricity after the power receiving process is equal to or greater than the above threshold value.

The control device 40 may display the power receiving support information based on the distance to the user's destination after the power receiving process. For example, it is assumed that the stored amount (remaining amount) of the battery included in the first mobile EV1 is 25 kWh. Further, it is assumed that the distance that the first mobile body EV1 can travel with a power amount of 1 kWh is 4 km to 10 km. When inputting information regarding power reception, the user inputs information about the destination after the power reception process. The information about the destination may be the distance from the parking lot where the electric power system 1 is installed to the destination, or may be information that can specify the position of the destination such as the address of the destination. The control device 40 calculates the amount of electric power required for the first mobile body EV1 to move from the parking lot to the destination. The control device 40 calculates the amount of electric power that the user can receive from the first electric power device 30a based on the amount of electric power required for the first mobile body EV1 to move from the parking lot to the destination. It is displayed on the display unit 46 as power receiving support information. For example, assume that the user's destination is located 30 km from the parking lot. In this case, the control device 40 calculates that the amount of electric power required for the first mobile body EV1 to move to the destination is 7.5 kWh. In the control device 40, the calculated 7.5 kWh is subtracted from the stored amount of 25 kWh of the battery of the first mobile EV1, and the amount of electric power that the user can receive in the first electric power device 30a is 17.5 kWh. Is calculated. The control device 40 may indicate on the display unit 46 as power receiving support information the amount of power that the user can receive power from the first power device 30a. The control device 40 may, for example, cause the user to input a power amount equal to or less than the power amount that the user can receive power from the first power device 30a.

When the control device 40 receives an input for executing power supply from the first mobile body EV1 from the user of the first mobile body EV1, the first power device 30a receives an electric power amount according to the information regarding power reception. To receive the power of. Upon receiving power from the first power device 30a, the control device 40 determines a power transmission path in receiving power (step S22). Here, the control device 40 determines the supply destination of the electric power received from the first mobile body EV1 as the power transmission path. The details of the method of determining the power transmission route will be described later. Here, the control device 40 receives power received from the first mobile body EV1 from the first power device 30a via the DC transmission line 80 and the second power device 30b. It is decided to transmit power to the second mobile body EV2.

At this time, since the second electric power device 30b is supplied with electric power from the AC transmission line 70, it is connected to the AC transmission line 70 so as to be able to transmit and receive electric power. The control device 40 transmits a signal for changing the transmission path to the second power device 30b in order to connect the second power device 30b to the DC transmission line 80 so as to be able to transmit and receive power (step). S23). When the first electric power device 30a is connected to the AC transmission line 70 so as to be able to transmit and receive electric power, the control device 40 also transmits a signal for changing the transmission path to the first electric power device 30a. (Step S23).

The first power device 30a and the second power device 30b change the power transmission path based on the signal from the control device 40 (step S24). For example, the first power device 30a and the second power device 30b transmit power by switching the relay inside the DC / DC converter 36 to connect the DC power transmission line 80 and the power so that the power can be transmitted. Change the route.

The control device 40 transmits a signal for starting power reception from the first mobile body EV1 to the first power device 30a (step S25).

When the first power device 30a receives a signal from the control device 40 to start receiving power, the first power device 30a starts receiving power from the first mobile body EV1 (step S26). That is, the first power device 30a causes the first mobile body EV1 to start discharging. Since the transmission path is changed in step S24, the electric power discharged from the first mobile body EV1 is transmitted from the first electric power device 30a via the DC transmission line 80 and via the second electric power device 30b. Then, power is supplied to the second mobile body EV2 that is receiving power. That is, the electric power discharged from the first mobile body EV1 is supplied to the second mobile body EV2 as DC power without being converted into AC power. In this way, when the first mobile body EV1 discharges and the second mobile body EV2 charges, the control device 40 causes the first mobile body EV1 to supply power to the second mobile body EV2. Control. By controlling in this way, the DC power discharged from the first mobile body EV1 can be supplied to the second mobile body EV2 without being converted into AC power, so that the DC power and the AC power are converted. Compared with the case, the power loss caused by the conversion can be reduced. If the specifications of each mobile EV are different, such as when the output voltage of the first mobile EV1 on the power feeding side is lower than that of the second mobile EV2, the first power device 30a or the second The voltage can be adjusted by using the power device 30b of the above. Even if the power supply power value to the second mobile body EV2 (in other words, the discharge power value of the first mobile body EV1) is adjusted by only one of the first power device 30a and the second power device 30b. You can do it either way or both.

Here, it is assumed that the power reception from the first mobile body EV1 by the first power device 30a is completed. That is, it is assumed that the power of the received amount input in step S21, for example, has been received from the first power device 30a. In this case, the control device 40 transmits a signal for stopping the power reception to the first power device 30a (step S27).

When the first power device 30a receives a signal from the control device 40 to stop receiving power, the first power device 30a stops receiving power from the first mobile body EV1 (step S28).

Then, the control device 40 transmits a signal for changing the power transmission path to the first power device 30a and the second power device 30b (step S29). Here, the control device 40 transmits a signal for changing (returning) to the transmission path before the transmission path is changed by the processing in steps S23 and S24.

The first power device 30a and the second power device 30b change the power transmission path based on the signal from the control device 40 (step S30). Here, for example, the first power device 30a and the second power device 30b are connected to the AC transmission line 70 so as to be able to transmit and receive power by switching the relay inside the DC / DC conversion unit 36. To.

When the first mobile EV1 is delivered, the control device 40 determines the fee to be paid by the user of the first mobile EV1 (step S31). For example, the control device 40 may determine the charge based on the parking time of the first mobile body EV1 and the amount of power received by the power system 1 from the first mobile body EV1. For example, the control device 40 determines the amount of the parking fee calculated based on the parking time minus the power receiving fee calculated based on the amount of received power as the fee to be paid by the user.

As described above, the power receiving charge may be higher as the amount of power received is larger. For example, when the electric power discharged from the first mobile body EV1 is supplied to the DC transmission line 80, compared with the case where the electric power discharged from the first mobile body EV1 is supplied to the AC transmission line 70. As described above, the power loss caused by the conversion can be reduced. Therefore, when discharging from the first mobile body EV1, the second mobile body EV2 that desires power supply exists in the parking lot, and the DC transmission line 80 is connected from the first mobile body EV1 to the second mobile body EV2. When the DC power is supplied via the AC transmission line 70, the power system 1 does not generate the power loss as compared with the case where the power discharged from the first mobile body EV1 is supplied to the AC transmission line 70. , A lot of power can be used. In this case, since the power receiving charge for the power loss is not reduced for the user of the first mobile EV1, the reward obtained by the user of the first mobile EV1 can be large.

The power receiving charge may differ depending on, for example, the supply destination of the power discharged from the first mobile EV1. For example, when the electric power discharged from the first mobile body EV1 is supplied to the DC transmission line 80, the electric power received is higher than when the electric power discharged from the first mobile body EV1 is supplied to the AC transmission line 70. The charge may be higher. In this case, when discharging from the first mobile body EV1, the second mobile body EV2 that desires power supply exists in the parking lot, and the DC transmission line is transmitted from the first mobile body EV1 to the second mobile body EV2. When the DC power is supplied via the 80, the power receiving charge becomes higher than the case where the power discharged from the first mobile body EV1 is supplied to the AC transmission line 70. Therefore, the reward obtained by the user of the first mobile EV1 becomes large. The power receiving charge may differ depending on whether the power supply destination of the power received from the first mobile unit EV1 is a commercial power source or the power storage device 20.

The control device 40 may display, for example, the charge determined in step S31 on the display unit 46. The user performs a fee payment procedure for the control device 40. The control device 40 accepts payment of a fee from the user (step S32).

Upon receiving the payment of the fee, the control device 40 transmits a signal for releasing the delivery restriction to the first issue restriction device 50a (step S33).

The first warehousing restriction device 50a releases the warehousing restriction of the first mobile body EV1 based on the signal received from the control device 40 (step S34). The user of the first mobile EV1 can move from the parking lot on the first mobile EV1 whose delivery restriction has been lifted.

Next, it is assumed that the power supply from the second power device 30b to the second mobile body EV2 is completed. That is, it is assumed that the power supply of the power supply amount input in, for example, step S14 is completed from the second power device 30b. In this case, the control device 40 transmits a signal for stopping the power supply to the second power device 30b (step S35).

When the second power device 30b receives a signal from the control device 40 to stop the power supply, the second power device 30b stops the power supply to the second mobile body EV2 (step S36).

When the second mobile EV2 is delivered, the control device 40 determines the charge to be paid by the user of the second mobile EV2 (step S37). For example, the control device 40 may determine the charge based on the parking time of the second mobile body EV2 and the amount of power supplied to the second mobile body EV2. For example, the control device 40 determines the amount of the parking fee calculated based on the parking time plus the power supply fee calculated based on the power supply amount as the fee to be paid by the user.

The power supply charge may be higher as the power supply amount is larger, for example, as described above.

The power supply charge may be determined, for example, based on the power used by the power system 1 for power supply. The power supply charge may be higher, for example, as the power used by the power system 1 for power supply is larger. For example, when the electric power supplied to the second mobile EV2 is supplied from the DC transmission line 80, the electric power supplied to the second mobile EV2 is supplied from the AC transmission line 70, as compared with the case where the electric power supplied to the second mobile EV2 is supplied from the AC transmission line 70. As described above, the power loss caused by the conversion can be reduced. Therefore, when power is supplied to the second mobile EV2, the first mobile EV1 that desires to be discharged exists in the parking lot, and the DC transmission line 80 is connected from the first mobile EV1 to the second mobile EV2. When the DC power is supplied via the AC transmission line 70, the power system 1 does not cause the power loss as compared with the case where the power supplied to the second mobile body EV2 is supplied from the AC transmission line 70. , Uses substantially less power. Therefore, when the power supply charge is determined based on the power used by the power system 1, the user does not have to pay the charge for the power loss, so that the amount paid by the user of the second mobile EV2 may be low. ..

The power receiving charge may differ depending on, for example, the source of the power supplied to the second mobile EV2. For example, when the electric power supplied to the second mobile EV2 is supplied from the DC transmission line 80, the electric power supplied to the second mobile EV2 is supplied more than when the electric power supplied to the second mobile EV2 is supplied from the AC transmission line 70. The price may be lower. In this case, when the power is supplied to the second mobile EV2, the first mobile EV1 desired to be discharged exists in the parking lot, and the DC transmission line is transmitted from the first mobile EV1 to the second mobile EV2. When the DC power is supplied via the 80, the power supply charge is lower than the case where the power supplied to the second mobile unit EV2 is supplied from the AC transmission line 70. Therefore, the amount paid by the user of the second mobile EV2 is low. The power supply charge may differ depending on whether the power supplied to the second mobile EV2 is a commercial power source, a power generation device 10, or a power storage device 20.

The control device 40 may display, for example, the charge determined in step S37 on the display unit 46. The user performs a fee payment procedure for the control device 40. The control device 40 accepts payment of a fee from the user (step S38).

Upon receiving the payment of the fee, the control device 40 transmits a signal for releasing the delivery restriction to the second issue restriction device 50b (step S39).

The second delivery restriction device 50b releases the delivery restriction of the second mobile EV2 based on the signal received from the control device 40 (step S40). The user of the second mobile EV2 can move from the parking lot on the second mobile EV2 whose delivery restriction has been lifted.

(Transmission route determination process)
Next, with reference to FIG. 8, the details of the transmission route determination process by the control device 40 will be described. FIG. 8 is a flowchart showing an example of the processing executed by the control device 40, and is a flowchart showing the details of steps S15 and S22 of FIG.

The control device 40 determines whether or not an input for executing power supply from the power device 30 to the mobile body has been received from the user (step S41).

When the control device 40 determines that the input for executing the power supply from the power device 30 to the mobile body is received (Yes in step S41), the power device receiving power from the mobile body in the power system 1 It is determined whether or not there is (step S42).

When the control device 40 determines that there is a power device 30 receiving power from the mobile body (Yes in step S42), the control device 40 controls the power device receiving power from the mobile body at the start of this flow. It is determined that the mobile body of the user who has input to the device 40 transmits electric power to and from the electric power device 30 connected so as to be able to transmit and receive electric power via the DC power transmission line 80 (step S43). In this case, the control device 40 transmits a signal for changing the transmission route to the determined route to the power device 30, and causes the power transmission line 80 to execute power transmission by DC power, if necessary.

On the other hand, when the control device 40 determines that there is no power device receiving power from the mobile body (No in step S42), the control device 40 determines to supply power from the AC transmission line 70 to the mobile body via the power device 30. (Step S44). In this case, the control device 40 transmits a signal for changing the transmission path to the determined path to the power device 30, and causes the AC transmission line 70 to supply electric power to the power device 30.

When power is supplied from the AC transmission line 70 to the mobile body via the power device 30, the control device 40 uses at least one of a commercial power source, a power generation device 10, and a power storage device 20 as the power source used for power supply. You may use it. The control device 40 may preferentially use the power generation device 10 or the power storage device 20 over the commercial power source. For example, the control device 40 may use the power storage device 20 as a power source used for power supply when the remaining capacity of the power storage device 20 is equal to or higher than a predetermined first reference value. When the remaining capacity of the power storage device 20 is less than the first reference value and the generated power of the power generation device 10 is equal to or more than the predetermined second reference value, the control device 40 uses the power generation device 10 as a power source used for power supply. You may use it. Specifically, when the power generation device 10 is used as the power source used for power supply, the control device 40 may transmit a request to the power generation device 10 to supply the generated power to the power device 30. The electric power device 30 may supply the generated electric power received from the power generation device 10 to the mobile body in response to the request.

When the control device 40 determines that the input for executing the power supply from the power device 30 to the mobile body is not received (No in step S41), the input for executing the power reception from the mobile body by the power device 30. Is determined from the user (step S45). The determination that the input for executing the power supply is not accepted can be performed, for example, based on whether or not a predetermined time (for example, several minutes) has elapsed without the input for executing the power supply. The determination that the input for executing the power supply is not accepted can be made, for example, based on whether or not the input indicating that the power supply is not executed is received from the user.

When the control device 40 determines that the input for executing the power reception from the mobile body by the power device 30 is not received from the user (No in step S45), the control device 40 ends this flow. In this case, it is recognized that the user does not desire the power feeding process or the power receiving process. The determination that the input for executing power reception is not accepted can be performed, for example, based on whether or not a predetermined time (for example, several minutes) has elapsed without input for executing power reception. The determination that the input for executing the power reception is not accepted can be made, for example, based on whether or not the input indicating that the power reception is not executed is received from the user.

On the other hand, when it is determined that the control device 40 has received the input from the user for executing the power reception from the mobile body by the power device 30 (Yes in step S45), the power system 1 supplies power to the mobile body. It is determined whether or not there is a power device 30 (step S46).

When the control device 40 determines that there is a power device 30 that is supplying power to the moving body (Yes in step S46), the control device 40 and the power device that is supplying power to the moving body and the control device at the start of this flow. It is determined that the mobile body of the user who has input to 40 transmits electric power to and from the electric power device 30 connected so as to be able to transmit and receive electric power via the DC transmission line 80 (step S43). In this case, the control device 40 transmits a signal for changing the transmission route to the determined route to the power device 30, and causes the power transmission line 80 to execute power transmission by DC power, if necessary.

On the other hand, when the control device 40 determines that there is no power device 30 that is supplying power to the mobile body (No in step S46), the power device 30 receives power from the mobile body to the AC transmission line 70. It is determined to supply (step S47). In this case, the control device 40 transmits a signal for changing the transmission route to the determined route to the power device 30, and causes the power device 30 to supply power to the AC transmission line 70.

When the electric power device 30 supplies the electric power received from the mobile body to the AC transmission line 70, the control device 40 may supply the electric power received from the mobile body to the power storage device 20 or reverse power flow to the commercial power source. You may let me. Reverse power flow includes power transmission from consumers to commercial power sources. For example, the manager of the electric power system 1 may be given a price by the electric power company according to the reverse power flow.

As described above, in the electric power system 1 according to the present embodiment, when the first mobile body EV1 for discharging and the second mobile body EV2 for charging are present, the control device 40 is the first. The DC power received from the mobile EV1 by the first electric power device 30a is supplied from the second electric power device 30b to the second mobile EV2. Therefore, according to the power system 1, there is no power loss due to the conversion as compared with the case where the DC power and the AC power are converted. In this way, according to the electric power system 1, energy can be used more efficiently, so that the usefulness is improved.

In the above embodiment, it has been described that only one of the AC power transmission line 70 and the DC power transmission line 80 is selected as the power transmission line, but both the AC power transmission line 70 and the DC power transmission line 80 are selected as the power transmission line. May be done. That is, the power device 30 may be configured to be connectable to both the AC transmission line 70 and the DC transmission line 80. For example, in the control device 40, when the first mobile body EV1 discharges and the second mobile body EV2 charges, the control device 40 receives DC power received from the first mobile body EV1 by the first power device 30a. Power is supplied from the second power device 30b to the second mobile body EV2 via the DC transmission line 80, and power is supplied from the AC power transmission line 70 to the second mobile body EV2 via the second power device 30b. You may. In this case, the power supply to the second mobile body EV2 can be completed earlier than the case where the power is supplied to the second mobile body EV2 from only the DC transmission line 80.

In the above embodiment, the case where the control device 40 determines the power transmission route based on the presence / absence of power supply or power reception to the mobile body has been described. However, the determination of the power transmission path by the control device 40 does not necessarily have to be based only on the presence or absence of power supply or power reception to the mobile body. For example, the control device 40 may determine the power transmission route based on the information regarding power supply and the information regarding power reception. It should be noted that the determination of the transmission path may include controlling so as to limit the power value supplied from the AC transmission line 70 instead of switching the relay. In this case, the determination of the transmission path may be made, for example, by executing and releasing the restriction (which transmission path the power received from the first mobile EV1 is mainly controlled).

Here, an example will be described in which the control device 40 determines the power transmission route based on the information regarding power supply and the information regarding power reception. Here, it is assumed that the information regarding power supply is the power supply amount and the information regarding power reception is the power reception amount. For example, when the control device 40 receives an input for executing power reception from the first mobile body EV1, the control device 40 receives the power received from the first mobile body EV1 input by the user and the second mobile body EV2. Compare with the remaining feed amount for. The remaining power supply amount to the second mobile body EV2 is the electric energy amount obtained by subtracting the power supply amount already supplied to the second mobile body EV2 from the power supply amount input from the user of the second mobile body EV2. , The amount of electric energy to be supplied to the second mobile EV2 after the time when the input from the first mobile EV1 is received. The remaining power supply amount to the second mobile EV2 is also hereinafter referred to as “planned power supply amount”.

As a result of comparison between the amount of power received from the first mobile body EV1 and the planned power supply amount to the second mobile body EV2, the control device 40 determines that the planned power supply amount is equal to or greater than the power received amount, the first mobile body. It is determined that the entire amount of power received from EV1 is supplied to the second mobile EV2. In this case, the control device 40 determines to transmit DC power from the first power device 30a to the second power device 30b via the DC transmission line 80. The control device 40 supplies the electric power received from the first mobile body EV1 to the second mobile body EV2 by DC power transmission, and then supplies the electric power from the AC power transmission line 70 to the second power device 30b in the transmission path. It may be controlled so as to. In this case, electric power may be supplied from the AC transmission line 70 to the second electric power device 30b until the planned power supply amount of the second mobile body EV2 is satisfied. In this way, for example, as shown as an example in FIG. 9, the amount of power received by the first power device 30a from the first mobile body EV1 and the amount of power received from the AC transmission line 70 to the second power device 30b are supplied. Depending on the amount of electric power, the supply amount of the second mobile body EV2 is satisfied.

FIG. 10 is a diagram showing an example of power supply to the second mobile body EV2. In FIG. 10, the vertical axis represents electric power and the horizontal axis represents time. Further, in this example, it is assumed that the upper limit of the electric power value to be discharged is set in consideration of the protection of the battery life of the first mobile body EV1. For example, at time t ₀ , it is assumed that the power receiving from the first mobile body EV1 by the first power device 30a is started. The electric power received by the first electric power device 30a from the first mobile body EV1 is supplied to the second electric power device 30b via the DC transmission line 80, and the second electric power device 30b to the second mobile body EV2 Is powered to. When the reception of the input power received by the first power device 30a is completed at time t ₁ , the control device 40 switches the power transmission path to the AC power transmission line 70. That is, from time t ₁ , power is supplied from the AC transmission line 70 to the second power device 30b. Then, for example, at time t ₂ , the scheduled power supply amount for the second mobile body EV 2 is satisfied, and the power supply is completed.

On the other hand, as a result of comparison between the amount of power received from the first mobile body EV1 and the planned power supply amount to the second mobile body EV2, the control device 40 is the first when the planned power supply amount is less than the power reception amount. The electric power received from the mobile EV1 is supplied to the second mobile EV2, and after the planned power supply amount of the second mobile EV2 is satisfied, the electric power received from the first mobile EV1 is transmitted to the AC transmission line 70. You may decide to transmit. In this case, the control device 40 first determines to transmit DC power from the first power device 30a to the second power device 30b via the DC transmission line 80. When the control device 40 determines that the scheduled power supply amount of the second mobile body EV2 is satisfied, the control device 40 changes the power transmission path and supplies the power received by the first power device 30a to the AC power transmission line 70. The electric power transmitted to the AC power transmission line 70 may be stored in the power storage device 20 or supplied to a commercial power source.

As described above, when the power device 30 is configured to be connectable to both the AC transmission line 70 and the DC transmission line 80 at the same time, when the control device 40 determines that the planned power supply amount is equal to or more than the power reception amount. , The second power device 30b may be connected to both the AC transmission line 70 and the DC transmission line 80. In this case, AC power is supplied from the AC transmission line 70 to the second power device 30b, and DC power is supplied from the first power device 30a to the second power device 30b via the DC transmission line 80. To.

Similarly, when the power device 30 is configured to be connectable to both the AC transmission line 70 and the DC transmission line 80 at the same time, the control device 40 determines that the planned power supply amount is less than the power reception amount. The electric power device 30a of 1 may be connected to both the AC transmission line 70 and the DC transmission line 80. In this case, power is supplied from the first power device 30a to the AC transmission line 70, and DC power is supplied from the first power device 30a to the second power device 30b via the DC transmission line 80. ..

In the power system 1, each power device 30 may be configured to receive DC power from a plurality of power devices 30. For example, the second electric power device 30b that supplies electric power to the second mobile body EV2 is connected to the first electric power device 30a that receives electric power from the first mobile body EV1 by a DC transmission line 80, and further. It may be configured to be connected by a DC transmission line 80 to another power device (third power device 30c) that receives power from another mobile body (third mobile body EV3). In this case, for example, when DC power is transmitted from the first power device 30a to the second power device 30b via the DC power transmission line 80, the DC power transmission line 80 is further connected from the third power device 30c. DC power may be transmitted to the third power device 30c via the third power device 30c.

FIG. 11 is a diagram showing an example of power supply to the second mobile body EV2. In FIG. 11, the vertical axis represents electric power and the horizontal axis represents time. Further, it is assumed that the upper limit of the power supply value of the first mobile body EV1 is set as in the example of FIG. For example, at time t ₀ , it is assumed that the power receiving from the first mobile body EV1 by the first power device 30a is started. The electric power received by the first electric power device 30a from the first mobile body EV1 is supplied to the second electric power device 30b via the DC transmission line 80, and the second electric power device 30b to the second mobile body EV2 Is powered to. In this state, it is assumed that the third mobile body EV3 is connected to the third power device 30c, and the power reception by the third power device 30c is started from the third mobile body EV3 by the input of the user. At this time, the control device 40 may connect the second power device 30b and the third power device 30c to the DC transmission line 80 to control the power so that it can transmit and receive power. In this case, for example, at time t3, power reception from the _third mobile body EV3 by the third power device 30c is started. The third electric power device 30c transmits the electric power received from the third mobile body EV3 to the second electric power device 30b via the DC transmission line 80. The second electric power device 30b supplies the electric power received from the third electric power device 30c to the second mobile body EV2. Then, for example, at time t4, the scheduled power supply amount for the _second mobile body EV2 is satisfied, and the power supply is completed. In this case, the power supply can be completed faster than the case where the second power device 30b supplies only the power received from the first power device 30a to the second mobile EV2.

Further, when the control device 40 receives a plurality of inputs for executing at least one of power supply and power reception, the control device 40 determines a combination of a mobile body that appropriately supplies power and a mobile body that receives power based on the power supply amount and the power reception amount. You may. For example, when there are a plurality of mobile bodies receiving power from the power device 30, when the mobile body is newly connected to the power device 30 and receives an input for executing power reception by the power device 30, control is performed. The device 40 may compare the amount of power received by the new mobile body with the planned power supply amount of the plurality of mobile bodies receiving power. The control device 40 may determine, for example, to supply the power received from the new mobile body by DC power to the mobile body whose planned power supply amount is closest to the power received by the new mobile body. Even when there are a plurality of mobile bodies that are receiving power from the power device 30, the control device 40 can execute the same process.

(Structure of the electric power system according to the second embodiment)
FIG. 12 is a diagram showing an example of connection of each functional unit in the power system 2 according to the second embodiment. The electric power system 2 according to the second embodiment will be described with reference to FIG. The contents common to the first embodiment will be omitted as appropriate.

In the power system 2 according to the present embodiment, the first power device 30a, the second power device 30b, and the power storage device 20 are connected by a DC transmission line 80. That is, in the power system 2, the first power device 30a, the second power device 30b, and the power storage device 20 can transmit and receive DC power to each other. The first power device 30a and the second power device 30b in the power system 2 do not have to include the AC / DC conversion unit 37 and the DC / AC conversion unit 38.

The DC transmission line 80 is connected to a commercial power source to which electric power is transmitted and received by AC power via an AC / DC conversion device 90. The AC / DC conversion device 90 converts the AC power supplied from the commercial power source into DC power and supplies the power to the DC transmission line 80. The AC / DC conversion device 90 is communicably connected to the control device 40. Therefore, the AC / DC conversion device 90 may be controlled based on the control signal from the control device 40. The power system 2 may include a DC / AC conversion device that converts DC power into AC power between the DC transmission line 80 and the commercial power source. For example, when the DC power flowing through the DC transmission line 80 is reverse-powered to the commercial power source side, the DC / AC conversion device converts the DC power into AC power.

A power generation device 10 is electrically connected between the commercial power supply and the AC / DC conversion device 90 via an AC transmission line 70.

In the power system 2, for example, when the control device 40 receives an input for executing power reception from the first mobile body EV1, the power device 30a receives power from the first mobile body EV1. , The power storage device 20, or the AC transmission line 70 may be transmitted to the commercial power source side. In the power system 2, for example, when the control device 40 receives an input for executing power supply to the second mobile body EV2, the power storage device 20 or the AC transmission line 70 to the second power device 30b is used. Then, electric power may be supplied to the second mobile body EV2. When power is supplied from the AC transmission line 70, power is supplied from a commercial power source or a power generation device 10.

For example, in the power system 2, the control device 40 receives power from the first mobile EV1 connected to the first power device 30a and the second mobile EV2 connected to the second power device 30b. Compare with the planned power supply amount to. As a result of the comparison, when the planned power supply amount is equal to or larger than the received power amount, the control device 40 may control to supply the entire amount of the power received from the first mobile body EV1 to the second mobile body EV2. In this case, the control device 40 may be further controlled to supply the electric power stored in the power storage device 20 to the second mobile body EV2. When the amount of power received from the first mobile body EV1 and the amount of electric power stored in the power storage device 20 are supplied to the second mobile body EV2, but the planned power supply amount of the second mobile body EV2 is not reached. The control device 40 may further supply electric power to the second mobile body EV2 from the AC transmission line 70 side. By supplying power to the second mobile EV2 from the plurality of power supply sources in this way, it becomes easy to satisfy the planned power supply amount of the second mobile EV2. Further, by supplying electric power to the second mobile EV2 from a plurality of electric power supply sources at the same time, it becomes easy to shorten the time required for the electric power supply as compared with the case where the electric power is supplied from a single electric power supply source.

In the power system 2, when the first power device 30a receives power from the first mobile body EV1 and the second power device 30b supplies power to the second mobile body EV2, the control device 40 is the second. The electric power received from the mobile body EV1 of 1 may be controlled to be supplied to the second mobile body EV2 from the first power device 30a via the second power device 30b. In this way, even in the electric power system 2 according to the present embodiment, when the first mobile body EV1 for discharging and the second mobile body EV2 for charging are present, the control device 40 is the first. The DC power received from the mobile body EV1 by the first power device 30a is supplied from the second power device 30b to the second mobile body EV2. Therefore, even in the power system 2, there is no power loss due to the conversion as compared with the case where the DC power and the AC power are converted. In this way, according to the electric power system 2, energy can be used more efficiently, so that the usefulness is improved.

In the power system 2, it was explained that the power generation device 10 is connected between the commercial power supply and the AC / DC conversion device 90. However, the power system 2 does not necessarily have to include the power generation device 10. When the power system 2 does not include the power generation device 10, for example, the power generation device 10 may be retrofitted by the manager of the power system 2.

(Structure of the electric power system according to the third embodiment)
FIG. 13 is a diagram showing an example of connection of each functional unit in the power system 3 according to the third embodiment. The electric power system 3 according to the third embodiment will be described with reference to FIG. The contents common to the first embodiment will be omitted as appropriate.

In the power system 3 according to the present embodiment, the power generation device 10, the first power device 30a, the second power device 30b, and the power storage device 20 are connected by a DC transmission line 80. That is, in the power system 3, the power generation device 10, the first power device 30a, the second power device 30b, and the power storage device 20 can transmit and receive DC power to each other. The power generation device 10 in the power system 3 does not have to include the DC / AC conversion unit 16. The first power device 30a and the second power device 30b in the power system 3 may not include the AC / DC conversion unit 37 and the DC / AC conversion unit 38. In the present embodiment, the power generation device 10 is communicably connected to the control device 40. Therefore, the power generation device 10 may be controlled based on the control signal from the control device 40.

The DC transmission line 80 is connected to a commercial power source to which electric power is transmitted and received by AC power via an AC / DC conversion device 90. The AC / DC conversion device 90 converts the AC power supplied from the commercial power source into DC power and supplies the power to the DC transmission line 80. The AC / DC conversion device 90 is communicably connected to the control device 40. Therefore, the AC / DC conversion device 90 may be controlled based on the control signal from the control device 40. The power system 3 may include a DC / AC conversion device that converts DC power into AC power between the DC transmission line 80 and the commercial power source. For example, when the DC power flowing through the DC transmission line 80 is reverse-powered to the commercial power source side, the DC / AC conversion device converts the DC power into AC power.

In the power system 3, for example, when the control device 40 receives an input for executing power reception from the first mobile body EV1, the power device 30a receives power from the first mobile body EV1. , The power storage device 20, or the AC transmission line 70 may be transmitted to the commercial power source side. In the power system 3, for example, when the control device 40 receives an input for executing power supply to the second mobile body EV2, the power storage device 20 or the AC transmission line 70 to the second power device 30b is used. Then, electric power may be supplied to the second mobile body EV2. When power is supplied from the AC transmission line 70, power is supplied from a commercial power source.

In the power system 3, for example, the control device 40 receives power from the first mobile EV1 connected to the first power device 30a and to the second mobile EV2 connected to the second power device 30b. Compare with the planned power supply amount of. As a result of the comparison, when the planned power supply amount is equal to or larger than the received power amount, the control device 40 may control to supply the entire amount of the power received from the first mobile body EV1 to the second mobile body EV2. In this case, the control device 40 may be further controlled to supply the electric power generated by the power generation device 10 and / or the electric power stored in the power storage device 20 to the second mobile body EV2. Even if the amount of power received from the first mobile body EV1 and the amount of power generated by the power generation device 10 and / or the amount of power stored in the power storage device 20 are supplied to the second mobile body EV2, the second mobile body When the planned power supply amount of the EV2 is not reached, the control device 40 may further supply power to the second mobile body EV2 from the AC transmission line 70 side. By supplying power to the second mobile EV2 from the plurality of power supply sources in this way, it becomes easy to satisfy the planned power supply amount of the second mobile EV2. Further, by supplying electric power to the second mobile EV2 from a plurality of electric power supply sources at the same time, it becomes easy to shorten the time required for the electric power supply as compared with the case where the electric power is supplied from a single electric power supply source.

For example, when the planned power supply amount is less than the received power amount as a result of comparison, the control device 40 may control the power received from the first mobile body EV1 to be supplied to the second mobile body EV2. In this case, for example, the control device 40 does not need to supply the electric power generated by the power generation device 10 to the second mobile EV2, so that the control device 40 reverse power flows to the commercial power side via the DC / AC conversion device. May be good.

In the power system 3, when the first power device 30a receives power from the first mobile body EV1 and the second power device 30b supplies power to the second mobile body EV2, the control device 40 is the second. The electric power received from the mobile body EV1 of 1 may be controlled to be supplied to the second mobile body EV2 from the first power device 30a via the second power device 30b. In this way, even in the electric power system 3 according to the present embodiment, when the first mobile body EV1 for discharging and the second mobile body EV2 for charging are present, the control device 40 is the first. The DC power received from the mobile EV1 by the first electric power device 30a is supplied from the second electric power device 30b to the second mobile EV2. Therefore, even in the power system 3, there is no power loss due to the conversion as compared with the case where the DC power and the AC power are converted. In this way, according to the electric power system 3, energy can be used more efficiently, so that the usefulness is improved.

In the power system 3, since the power generation device 10 is connected to the DC transmission line 80, the power generated by the power generation device 10 is supplied from the power device 30 to the mobile body as DC power. Therefore, there is no power loss due to the conversion as compared with the case where the power generated by the power generation device 10 is converted from AC power to DC power. Therefore, according to the electric power system 3, the energy can be used more efficiently, and the usefulness is improved.

Further, in the electric power system 3, the power generation device 10 is connected to the DC transmission line 80 and is not connected to the AC transmission line. Therefore, since a mechanism such as a DC / AC conversion unit, which is required when connecting the power generation device 10 to the AC transmission line, is not required, the structure of the power generation device 10 in the power system 3 can be easily simplified.

(Structure of the electric power system according to the fourth embodiment)
FIG. 14 is a diagram showing a schematic configuration of the electric power system 4 according to the fourth embodiment. FIG. 15 is a diagram showing an example of connection of each functional unit in the power system 4. The electric power system 4 according to the fourth embodiment will be described with reference to FIGS. 14 and 15. The contents common to the first embodiment will be omitted as appropriate.

As shown in FIG. 14, the power system 4 includes a first power generation device 10a and a second power generation device 10b. In the example shown in FIG. 14, the first power generation device 10a and the second power generation device 10b are arranged above the first parking space Sa and the second parking space Sb, respectively. The number of power generation devices included in the power system 4 is not limited to two. The electric power system 4 may include a plurality of power generation devices.

In the power system 4 according to the present embodiment, the first power generation device 10a, the second power generation device 10b, the first power device 30a, the second power device 30b, and the power storage device 20 are connected by direct current. It is connected by the electric power 80. That is, in the power system 4, the first power generation device 10a, the second power generation device 10b, the first power device 30a, the second power device 30b, and the power storage device 20 transmit DC power to each other. It is possible to receive power. The first power device 30a and the second power device 30b in the power system 3 may not include the AC / DC conversion unit 37 and the DC / AC conversion unit 38. In the present embodiment, the first power generation device 10a and the second power generation device 10b are communicably connected to the control device 40. Therefore, the first power generation device 10a and the second power generation device 10b may be controlled based on the control signal from the control device 40.

The configuration of the electric power system 4 according to the present embodiment is common to the electric power system 3 according to the third embodiment except that it has a plurality of power generation devices. Therefore, the control related to the transmission of electric power in the electric power system 4 is common to the control related to the transmission of electric power in the electric power system 3 except that electric power can be supplied from a plurality of power generation devices. In the power system 4, a plurality of power generation devices are connected in parallel to the DC transmission line 80. Therefore, electric power can be transmitted from any of the plurality of power generation devices to any power device 30 connected to the DC transmission line 80.

The electric power system 4 also improves the usefulness because the energy can be used more efficiently for the same reason as described in the third embodiment. Further, the electric power system 4 also facilitates simplification of the structure of the plurality of power generation devices in the electric power system 4 for the same reason as described in the third embodiment. Further, since the electric power system 4 includes a plurality of power generation devices independently provided, the power generation system as a whole due to external environmental factors and the like is compared with the case where the electric power system includes one power generation device. It becomes easier to suppress the decrease in output. That is, when the electric power system includes only one power generation device, for example, it is assumed that a part of the power generation device is covered with a shadow. When the power generation device has a configuration in which the backflow prevention diode is not provided, the power generation device as a whole tries to output the same power in accordance with the lowest output. Then, the output of the entire power generation device decreases. Further, even when the power generation device has a configuration in which a backflow prevention diode is provided, the overall output is reduced if the shade covers a part of all the strings. On the other hand, when a plurality of power generation devices are arranged as in the present embodiment, even if a part of the plurality of power generation devices is covered with a shadow, the output of the other power generation devices not covered with the shadow. Is unaffected by shaded power generators. Also, by distributing the installation locations, the probability that each string will be covered by the same shade is reduced. Therefore, it becomes easy to suppress a decrease in the output of the power generation device as a whole.

Although the present disclosure has been described based on the drawings and embodiments, it should be noted that those skilled in the art can easily make various modifications and modifications based on the present disclosure. It should be noted, therefore, that these modifications and modifications are within the scope of this disclosure. For example, the functions included in each means or each step can be rearranged so as not to be logically inconsistent. It is possible to combine or divide a plurality of means or steps into one.

For example, a plurality of components of the power system according to the above-described embodiment may be integrated into one device. One of the components of the power system may be divided into multiple devices.

In the above-described embodiment, the configuration in which the power device 30 is connected to the mobile body via the communication unit 31 and power is supplied to the mobile body and power is received from the mobile body has been described. In another embodiment, for example, by utilizing any technique relating to wireless power transmission, it is possible to provide a non-contact power supply to and receive power from the mobile body.

In the above-described embodiment, it has been described that the target to which the power device 30 supplies and receives power is a mobile body. However, the electric power device 30 can target any device capable of storing electric power to supply and receive electric power. For example, the power device 30 can supply power or receive power to a portable storage battery unit connected to the power device 30 so as to be able to transmit and receive electric power. The storage battery unit may be mounted on a moving body, for example.

1, 2, 3, 4 Power system 10 Power generation device 10a First power generation device 10b Second power generation device 11 Power generation unit 12 Output unit 13, 32, 42 Sensor unit 14, 34, 44 Control unit 15, 36 DC / DC Conversion unit 16, 38 DC / AC conversion unit 20 Power storage device 30a First power device 30b Second power device 30c Third power device 31, 41 Communication unit 33, 43 Storage unit 35 Input / output unit 37 AC / DC conversion 40 Control device 45 Input section 46 Display section 50a First delivery restriction device 50b Second delivery restriction device 60 Display device 70 AC transmission line 80 DC transmission line 90 AC / DC conversion device EV1 First mobile unit EV2 Second Moving body EV3 Third moving body Sa First parking space Sb Second parking space

Claims (10)

A first power device and a second power device capable of transmitting or receiving power to and from a mobile body capable of storing power, and
A control device that controls power supply and reception by a power device to a mobile body,
Equipped with
The first power device and the second power device are connected by a DC transmission line.
The first power device and the second power device are configured to be connectable to an AC transmission line.
The control device is
When the first electric power device is connected so as to be able to receive electric power from the first moving body for discharging, and the second electric power device is connected so as to be able to transmit electric power to the second moving body for charging. , The first electric power device feeds the DC power received from the first mobile body to the second mobile body, or feeds the AC power supplied from the AC transmission line to the second mobile body. It is possible to select and control whether to supply the DC power and the AC power to the second mobile body at the same time .
The control device switches a transmission path between the DC transmission line and the AC transmission line.
The control device switches the transmission path to the AC transmission line, supplies power from the AC transmission line to the second power device, and receives power.
The control device controls so that the DC power received by the first power device from the first mobile body does not exceed a predetermined threshold value set for the first mobile body .
Power system. The power system according to claim 1, wherein the control device determines a power transmission route by executing and releasing restrictions on power transmitted in the DC power transmission line and the AC power transmission line. The control device receives input of information regarding power reception from the first mobile body, and causes the first power device to receive power in an amount of power according to the information regarding power reception, according to claim 1 or 2 . The power system described. The power system according to claim 3 , wherein the information regarding power reception includes at least one of a power reception time, a power reception amount, and a power reception amount. The third or fourth aspect of the present invention, wherein the control device includes a display unit for displaying information, and displays information on the display unit for supporting the input of the information regarding the power reception when inputting the information regarding the power reception. Power system. The power system according to any one of claims 1 to 5 , further comprising a power generation device connected to the DC transmission line. The power system according to claim 6 , further comprising the plurality of power generation devices. The power system according to claim 7 , wherein the plurality of power generation devices are connected in parallel to the DC transmission line. A power device capable of transmitting or receiving electric power to and from a mobile body capable of storing electric power, connected to the moving body to be charged so as to be able to transmit electric power, and to be able to receive electric power by another electric power device. When there is another connected moving body that discharges, the other power device feeds the DC power received from the other moving body to the moving body, or AC transmission that can be connected to the power device. An electric power device capable of selecting either to supply AC power supplied from an electric wire to the mobile body or to supply DC power and AC power to the mobile body at the same time.
The electric power device and the other electric power device are connected by a DC transmission line.
The power device and the other power devices are configured to be connectable to an AC transmission line.
The transmission route is switched between the DC transmission line and the AC transmission line.
The transmission path is switched to the AC transmission line, and power is supplied from the AC transmission line to the other power device.
A power device in which the DC power received by the power device from the mobile body is controlled so as not to exceed a predetermined threshold value set for the mobile body . A method for controlling an electric power system including a first electric power device and a second electric power device capable of transmitting or receiving electric power to and from a mobile body capable of storing electric power, and a control device.
The first power device and the second power device are connected by a DC transmission line.
The first power device and the second power device are configured to be connectable to an AC transmission line.
When the first electric power device is connected so as to be able to receive electric power from the first moving body for discharging, and the second electric power device is connected so as to be able to transmit electric power to the second moving body for charging. , The first electric power device feeds the DC power received from the first mobile body to the second mobile body, or feeds the AC power supplied from the AC transmission line to the second mobile body. A step controlled by the control device so that it is possible to select whether to supply the DC power and the AC power to the second mobile body at the same time.
The control device is a step of switching a transmission path between the DC transmission line and the AC transmission line.
The control device switches the transmission path to the AC transmission line, and supplies power from the AC transmission line to the second power device.
The control device controls the DC power received by the first power device from the first mobile body so as not to exceed a predetermined threshold value set for the first mobile body.
How to control the power system, including.

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