JP7251787B2 - Power supply system and power supply vehicle - Google Patents

Description

The present invention relates to a power supply system and a power supply vehicle used for power supply in an emergency.

BACKGROUND ART In recent years, vehicles equipped with batteries such as electric vehicles (EVs) and plug-in hybrid vehicles (PHVs) have become popular.

Batteries mounted on automobiles can also be used for purposes other than automobiles. For example, ideas such as V2H (Vehicle to Home) and V2G (Vehicle to Grid) are known. V2H is the idea of using the battery installed in a car as a source of power for home use. V2G is the idea of powering the grid from the battery on board the vehicle.

For example, Patent Literature 1 discloses an invention that selects which battery of a mobile body to use as a power supply source when using a battery mounted on a mobile body such as an automobile as a power supply source for other equipment. disclosed.

Japanese Patent No. 6485566

In an emergency, such as when a large-scale power outage occurs due to a disaster, if a vehicle equipped with a battery can supply power to a facility during the power outage, the impact of the power outage on the facility can be minimized. can be mitigated.

At this time, large-scale power outages caused by disasters may continue for a long time, so it is preferable to be able to stably supply electric power from vehicles equipped with batteries to the facilities for a long period of time.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a power supply system and a power supply vehicle capable of improving the stability of power supply in an emergency.

The power supply system according to the present invention can be used to supply power to facilities in an emergency. The power supply system includes a plurality of power acquisition devices, each power acquisition device being capable of receiving power supply from a vehicle equipped with a battery; An integrated device, wherein each integrated device is connected to at least one or more power acquisition devices among the plurality of power acquisition devices, and power is supplied from the at least one or more connected power acquisition devices a plurality of integrators for integrating the power supplied from the power source; and a conversion device for converting the power supplied from any one of the plurality of integrators from single-phase AC power to three-phase AC power. and a power switching device for switching connection between the plurality of integration devices and the conversion device such that any one integration device among the plurality of integration devices is connected to the conversion device.

Also, the power supply vehicle according to the present invention is equipped with a power supply system that can be used to supply power to facilities in an emergency, and is movable. The power supply system includes a plurality of power acquisition devices, each power acquisition device being capable of receiving power supply from a vehicle equipped with a battery; An integrated device, wherein each integrated device is connected to at least one or more power acquisition devices among the plurality of power acquisition devices, and power is supplied from the at least one or more connected power acquisition devices a plurality of integrators for integrating the power supplied from the power source; and a conversion device for converting the power supplied from any one of the plurality of integrators from single-phase AC power to three-phase AC power. and a power switching device for switching connection between the plurality of integration devices and the conversion device such that any one integration device among the plurality of integration devices is connected to the conversion device.

According to the power supply system and the power supply vehicle according to the present invention, it is possible to improve the stability of power supply in an emergency.

It is a figure showing a schematic structure of a power supply system concerning one embodiment of the present invention. 2 is a diagram showing a schematic configuration of the power switching device of FIG. 1; FIG. FIG. 2 is a schematic diagram of a power supply vehicle equipped with the power supply system of FIG. 1;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a diagram showing a schematic configuration of a power supply system 1 according to one embodiment of the present invention. The power supply system 1 can be used to supply power to facilities in an emergency.

Facilities to which the power supply system 1 supplies power in an emergency are, for example, housing complexes, hospitals, government buildings such as city halls, or gymnasiums operated as evacuation centers. Here, "emergency" is when power cannot be supplied to the facility from a commercial power system managed by an electric power company or the like. An example of an emergency is when a large-scale blackout occurs due to a disaster.

The power supply system 1 may be installed within the premises of the facility. For example, when the power supply system 1 is installed on the site of an apartment complex, the power supply system 1 may supply power to the installed apartment complex in an emergency. Alternatively, the power supply system 1 may supply power in an emergency to a facility other than the housing complex in which the power supply system 1 is installed, such as a nearby hospital.

The power supply system 1 includes a plurality of power acquisition devices 10, a plurality of integration devices 20A to 20C, a power switching device 30, and a conversion device .

As shown in FIG. 1, the plurality of power acquisition devices 10 are divided into three groups, Group A, Group B, and Group C. As shown in FIG. Also, the integration devices 20A to 20C belong to groups A to C, respectively. The group A power acquisition device 10 is connected to the group A integration device 20A. The group B power acquisition device 10 is connected to the group B integration device 20B. The group C power acquisition device 10 is connected to the group C integration device 20C. Hereinafter, the integration devices 20A to 20C will be simply referred to as the integration device 20 when there is no particular need to distinguish them.

FIG. 1 shows an example in which the plurality of power acquisition devices 10 are divided into three groups. may be The plurality of power acquisition devices 10 may be divided into two groups, or may be divided into four or more groups.

Also, although FIG. 1 shows an example in which one group includes five power acquisition devices 10, the present invention is not limited to this. One group may include any number of one or more power harvesting devices 10 . Further, although the number of power acquisition apparatuses 10 included in each group is the same in FIG. 1, the number of power acquisition apparatuses 10 included in each group may be different for each group.

The power acquisition device 10 can receive power supply from the vehicle 50 . Vehicle 50 is a vehicle equipped with a battery. The vehicle 50 is, for example, an EV or a PHV, but is not limited thereto, and may be any vehicle equipped with a battery. Further, the vehicle 50 is not limited to an automobile as long as it is equipped with a battery, and may be, for example, a motorbike, a bicycle, or a train.

The power acquisition device 10 may receive power supply from the vehicle 50 as AC power, or may receive power supply as DC power. Whether the power acquisition device 10 receives AC power or DC power may depend on whether the vehicle 50 is capable of outputting AC power or DC power. For example, when vehicle 50 is equipped with an inverter, vehicle 50 can output AC power.

The power acquisition device 10 outputs AC power to the integration device 20 both when it receives power as AC power and when it receives power as DC power.

When the power acquisition device 10 receives power supply as AC power from the vehicle 50 , the power acquisition device 10 outputs the AC power to the integration device 20 as it is.

When the power acquisition device 10 receives power as DC power from the vehicle 50 , the power acquisition device 10 converts the DC power into AC power and outputs the AC power to the integration device 20 . The power acquisition device 10 may include an inverter that converts DC power to AC power.

The power acquisition device 10 may include two power input units, an AC power input unit and a DC power input unit, as power input units that receive power supply from the vehicle 50 . Alternatively, the power acquisition device 10 may include one common power input unit for alternating current and direct current as a power input unit that receives power supply from the vehicle 50 . In this case, the power acquisition device 10 may be configured to be able to switch between operating and not operating the inverter depending on whether the input is AC or DC.

The power acquisition device 10 outputs single-phase AC power. The power acquisition device 10 may output single-phase AC power, for example, in a single-phase three-wire system or a single-phase two-wire system.

The integration device 20 is connected to at least one or more power acquisition devices 10 . In the example shown in FIG. 1, the integration device 20 is connected to five power acquisition devices 10, but is not limited to this. The integration device 20 may be connected to any number of one or more power harvesting devices 10 .

The integration device 20 integrates the single-phase AC power supplied from the power acquisition device 10 and outputs it to the power switching device 30 . In the example shown in FIG. 1 , the integration device 20 integrates power supplied from five power acquisition devices 10 . The integration device 20 outputs the integrated single-phase AC power to the power switching device 30 . When the integration device 20 integrates power supplied from a plurality of power acquisition devices 10 , the integration device 20 can output to the power switching device 30 power greater than the power obtained from one vehicle 50 .

The power switching device 30 switches connection between the integration devices 20A to 20C and the conversion device 40 so that any one of the integration devices 20A to 20C is connected to the conversion device 40 . When the power switching device 30 connects the integration device 20</b>A and the conversion device 40 , the single-phase AC power output by the integration device 20</b>A is supplied to the conversion device 40 . When the power switching device 30 connects the integration device 20</b>B and the conversion device 40 , the single-phase AC power output by the integration device 20</b>B is supplied to the conversion device 40 . When the power switching device 30 connects the integration device 20C and the conversion device 40 , the single-phase AC power output by the integration device 20C is supplied to the conversion device 40 . Details of the configuration and functions of the power switching device 30 will be described later.

The conversion device 40 is connected to any one of the integration devices 20A-20C according to the switching operation by the power switching device 30. FIG. The conversion device 40 converts single-phase AC power supplied from the integration device 20 connected via the power switching device 30 into three-phase AC power. Single-phase AC power is also commonly referred to as a "lamp". Three-phase AC power is also commonly referred to as "power".

When converting the single-phase AC power supplied from the integration device 20 into three-phase AC power, the conversion device 40 may also convert the voltage of the AC power. The converter 40 may convert, for example, a first voltage that is a voltage of single-phase AC power into a second voltage that is a voltage of three-phase AC power. At this time, the second voltage may be higher than the first voltage. For example, the first voltage may be 100V and the second voltage may be 200V. The conversion device 40 may comprise a transformer for converting voltage.

The conversion device 40 outputs three-phase AC power to the switching board 60 . The switching board 60 can switch from which power source power is supplied to the facility. The switching board 60 may include a switch capable of switching the connection of the power line. The switching board 60 normally switches the connection of the power line so that power is supplied to the facility from a commercial system managed by an electric power company or the like. In addition, the switching board 60 can switch the connection of the power line so that power can be supplied from a power source other than the commercial system, such as the power supply system 1, in an emergency.

The switching board 60 may be configured to manually switch the connection of the power line, or may be configured to automatically switch the connection of the power line. In the case of a configuration in which the connection of the power line is automatically switched, the switching board 60 automatically switches the connection of the power line so that power can be supplied from the power supply system 1 to the facility upon detection of an emergency. to switch.

The converter 40 can supply three-phase AC power to the facility via the switching board 60 in an emergency. Single-phase AC power cannot operate large electrical installations such as elevators, but three-phase AC power can operate large electrical installations such as elevators. Therefore, the power supply system 1 can supply three-phase AC power to facilities in an emergency, thereby enabling large electrical equipment such as elevators to operate in facilities during power outages.

Next, the configuration and functions of the power switching device 30 will be described with reference to FIG. As shown in FIG. 2, the power switching device 30 includes switches 31A to 31C, a control section 32, a storage section 33, and an input section .

The switch 31A switches ON/OFF of the connection between the integration device 20A and the conversion device 40 based on the control signal from the control unit 32 . The switch 31B switches ON/OFF of the connection between the integration device 20B and the conversion device 40 based on the control signal from the control unit 32 . The switch 31C switches ON/OFF of the connection between the integration device 20C and the conversion device 40 based on the control signal from the control unit 32 .

When the switch 31A is turned on, power is supplied from the integration device 20A to the conversion device 40 . When the switch 31B is turned on, power is supplied from the integration device 20B to the conversion device 40 . When the switch 31C is turned on, power is supplied from the integration device 20C to the conversion device 40. FIG.

Hereinafter, the switches 31A to 31C will be simply referred to as the switch 31 when there is no particular need to distinguish them.

Although FIG. 2 shows a configuration in which power switching device 30 includes three switches 31A to 31C, the number of switches 31 provided in power switching device 30 is not limited to three. The power switching device 30 may include a plurality of switches 31, and the number of switches 31 may be two, or four or more.

The switch 31 may be, for example, an electromagnetic switch. When the switch 31 is an electromagnetic switch, the switch 31 is turned on when a current flows through a coil of the electromagnetic switch due to a control signal from the controller 32 . When the control signal from the control unit 32 stops the current from flowing through the coil of the electromagnetic switch, the switch 31 is turned off.

The control unit 32 controls each component of the power switching device 30 and the power switching device 30 as a whole. Control unit 32 may include one or more processors. The processor may be configured as a general-purpose processor that loads a specific program and executes a specific function, or may be configured as a dedicated processor that specializes in specific processing.

The storage unit 33 stores various data, programs executed by the control unit 32, and the like. The storage unit 33 may be composed of, for example, a semiconductor memory, a magnetic memory, or the like. The storage unit 33 may be configured integrally with the control unit 32 .

The input unit 34 receives input from the user to the power switching device 30 . The input unit 34 may be configured as physical buttons, or may be configured as a touch panel that receives input to the screen. For example, the user of the power supply system 1 can start or end the operation of the power switching device 30 by operating the input unit 34 .

Next, the operation of the control section 32 will be described in detail.

The control unit 32 controls on/off of the switch 31 to switch which one of the integration devices 20A to 20C is connected to the conversion device 40 . The control unit 32 controls the switches 31A to 31C so that only one of the switches 31A to 31C is turned on. FIG. 2 shows a state in which only the switch 31A is on.

The control unit 32 controls the on/off of the switches 31A to 31C so that the switches 31A, 31B, and 31C are circulated and turned on in the order of the switches 31A, 31B and 31C. That is, the control unit 32 controls the on/off of the switches 31A to 31C so that, for example, states 1 to 3 shown below circulate and repeat in the order of states 1, 2, and 3.
State 1: switch 31A is on, switch 31B is off, switch 31C is off State 2: switch 31A is off, switch 31B is on, switch 31C is off State 3: switch 31A is off, switch 31B is off, switch 31C is off on

The control unit 32 switches which switch 31 is turned on each time a predetermined time elapses. The predetermined time is not particularly limited, but may be, for example, about 5 hours.

The storage unit 33 may store the value of the predetermined time. The control unit 32 refers to the value of the predetermined time stored in the storage unit 33, and switches the switches 31A to 31C on/off.

A user of the power supply system 1 such as an administrator can change the predetermined time value stored in the storage unit 33 by operating the input unit 34 . Alternatively, the user can store a new predetermined time value in the storage unit 33 by operating the input unit 34 .

As described above, according to the present embodiment, the power switching device 30 connects the plurality of integration devices 20A so that any one integration device 20 out of the plurality of integration devices 20A to 20C is connected to the conversion device 40. 20C and the conversion device 40 are switched. As a result, the power switching device 30, for example, in a state in which the integrating device 20A is connected to the converting device 40, even if the remaining amount of the battery of the vehicle 50 supplying power to the integrating device 20A decreases, The connection can be switched such that the integration device 20B is connected to the conversion device 40 before the vehicle 50 becomes incapable of discharging. At this time, if a vehicle 50 equipped with a dischargeable battery is connected to the power acquisition device 10 connected to the integration device 20B, power can be supplied from the integration device 20B to the conversion device 40. . Therefore, the power supply system 1 according to this embodiment can supply power to facilities for a long time in an emergency. That is, the power supply system 1 according to this embodiment can improve the stability of power supply in an emergency.

Further, according to the present embodiment, the conversion device 40 converts the power supplied from the integration device 20 from single-phase AC power to three-phase AC power. As a result, the conversion device 40 can supply three-phase AC power to the facility in an emergency. Therefore, the power supply system 1 according to this embodiment can operate large-sized electrical equipment such as an elevator in an emergency facility.

(power supply vehicle)
In the description of FIG. 1, the power supply system 1 is installed on the premises of the facility, but the power supply system 1 may be mounted on a movable vehicle. FIG. 3 shows a schematic diagram of how the power supply system 1 is mounted on the movable power supply vehicle 2 .

In FIG. 3, the power supply system 1 mounted on the power supply vehicle 2 is a system having the same functions as the power supply system 1 described with reference to FIG.

Since the power supply vehicle 2 is movable, the power supply vehicle 2 can go to a facility that requires power supply in an emergency. If the conversion device 40 of the power supply vehicle 2 is connected to the switching board 60 installed in the facility where power supply is required in an emergency, and the vehicle 50 is connected to the power acquisition device 10 of the power supply vehicle 2 , power can be supplied from the power supply vehicle 2 to facilities that require power supply in an emergency.

Since the power supply vehicle 2 is equipped with the power supply system 1 in this way, it is possible to supply power even to a facility that is not equipped with the power supply system 1 in an emergency.

Although the present invention has been described with reference to the drawings and examples, it should be noted that various variations and modifications will be readily apparent to those skilled in the art based on this disclosure. Therefore, it should be noted that these variations and modifications are included within the scope of the present invention. For example, the functions included in each component and each step can be rearranged so as not to be logically inconsistent, and multiple components or steps can be combined into one or divided. is. Also, although the present invention has been described in terms of an apparatus, the present invention may also be implemented as a method including steps performed by each component of the apparatus. In addition, although the present invention has been mainly described with respect to the device, the present invention can also be implemented as a method, program, or storage medium storing programs executed by a processor provided in the device. should be understood to include these as well.

For example, instead of the vehicle 50, the power acquisition device 10 may be supplied with power from another moving object equipped with a battery. Examples of other mobile objects include, for example, ships and airplanes.

Further, the power acquisition device 10 may be supplied with power not only from the battery mounted on the vehicle 50 but also from a single battery.

1 power supply system 2 power supply vehicle 10 power acquisition device 20, 20A, 20B, 20C integration device 30 power switching device 31, 31A, 31B, 31C switch 32 control unit 33 storage unit 34 input unit 40 conversion device 50 vehicle 60 switching board

Claims (5)

A power supply system that can be used to power a facility in an emergency, comprising:
a plurality of power harvesting devices, each power harvesting device capable of receiving power from a vehicle on which a battery is mounted;
a plurality of integrated devices, each integrated device being connected to at least one or more power acquisition devices among the plurality of power acquisition devices, and the at least one or more power acquisition devices being connected a plurality of integrating devices that integrate power supplied from
a conversion device that converts power supplied from any one of the plurality of integration devices from single-phase AC power to three-phase AC power;
a power switching device that switches connection between the plurality of integrating devices and the converting device such that any one of the plurality of integrating devices is connected to the converting device. . In the power supply system according to claim 1,
The power supply system, wherein the power switching device switches the integrated device connected to the conversion device every time a predetermined time elapses. In the power supply system according to claim 1 or 2,
The conversion device is connectable to a switching board capable of switching power line connection so that the facility and the conversion device are connected in an emergency, and supplies power to the facility via the switching board in an emergency. power supply system capable of In the power supply system according to any one of claims 1 to 3,
The conversion device converts the first voltage, which is the voltage of the single-phase AC power, into a second voltage, which is the voltage of the three-phase AC power,
The power supply system, wherein the second voltage is greater than the first voltage. A mobile power supply vehicle comprising the power supply system according to any one of claims 1 to 4.

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