JP2020145857A - Power supply apparatus, power supply system, power supply method, and program - Google Patents

Abstract

To continue to supply power to a load even if an abnormality occurs in a commercial power supply or a battery.SOLUTION: A power supply apparatus includes: a determination unit for determining whether to supply power from another power supply apparatus to a load based on a state of each of a battery and a commercial power supply, and, if there is something wrong with the battery or the commercial power supply, determining that power is supplied to the load from the other power supply apparatus; and a supply unit for electrically connecting the other power supply apparatus and the load and supplying the power to the load when the determination unit determines that the power is supplied to the load from the other power supply apparatus.SELECTED DRAWING: Figure 1

Description

The present invention relates to power supply devices, power supply systems, power supply methods, and programs.

An example of a power supply device is described in Patent Document 1. The power supply device of Patent Document 1 includes a plurality of converters, a DC power supply, a current sensor, and a control unit. A plurality of converters are connected in parallel between a commercial AC power supply and a load. The DC power supply supplies DC power to the load. The current sensor detects the current supplied to the load from multiple converters and DC power sources. The control unit selects the number of converters required to supply the current detected by the current sensor.

Even when the DC power supply supplies sufficient power to the load, the control unit operates the number of converters required to supply the power. If the DC power supply fails, the converter in operation supplies power to the load. Therefore, the power supply to the load does not stop.

Japanese Unexamined Patent Publication No. 2012-217299

In an uninterruptible power supply (hereinafter referred to as UPS), which is an example of a power supply device, an abnormality may occur in a commercial power supply. Abnormalities in commercial power sources include fluctuations in power supply voltage, power outages, and distortion of voltage waveforms. When an abnormality occurs in the commercial power supply, the UPS starts supplying power to the load from the built-in battery. However, when an abnormality such as a failure occurs in the battery, the UPS stops the power supply from the battery to the load. Therefore, devices such as servers connected to the UPS cannot back up the data and shut down, which may cause a system down. If a system goes down, devices such as servers may break down or data may be damaged.

The power supply device of Patent Document 1 described above has a problem that the power supply to the load is stopped when an abnormality occurs in the commercial power supply and the battery.

Therefore, an object of the present invention is to provide a power supply device, a power supply system, a power supply method, and a program for solving the above-mentioned problems.

According to the first aspect of the present invention, the power supply device determines whether or not to supply power from another power supply device to the load based on the respective states of the battery and the commercial power supply, and determines whether or not to supply power from the battery and the commercial power supply. When there is an abnormality in the commercial power supply, the determination unit determines that the power is supplied from the other power supply device to the load, and the determination unit determines that the power is supplied from the other power supply device to the load. If so, the other power supply device is electrically connected to the load, and a supply unit for supplying the power to the load is provided.

According to a second aspect of the invention, the power supply system comprises at least two power supply devices, each said power supply device providing power to another based on the respective states of the battery and the commercial power source. A determination unit that determines whether or not to supply power from the power supply device to the load, and if there is an abnormality in the battery and the commercial power supply, determines that the power is supplied to the load from the other power supply device, and the power. When the determination unit determines that the other power supply device supplies the load to the load, the supply unit that electrically connects the other power supply device and the load and supplies the power to the load, To be equipped.

According to the third aspect of the present invention, the power supply method determines whether or not to supply power from another power supply device to the load based on the respective states of the battery and the commercial power supply, and determines whether or not to supply power to the load, and the battery and When there is an abnormality in the commercial power supply, it is determined in the determination step that the power is supplied from the other power supply device to the load, and that the power is supplied from the other power supply device to the load. If so, it includes a supply step of electrically connecting the other power supply device and the load and supplying the power to the load.

According to a fourth aspect of the present invention, the program determines whether to supply power from another power supply device to the load based on the respective states of the battery and the commercial power source, and determines whether or not to supply power to the load from the battery and the commercial power supply. When there is an abnormality in the power supply, it is determined in the determination step that the power is supplied from the other power supply device to the load and that the power is supplied from the other power supply device to the load. In this case, the other power supply device and the load are electrically connected, and the computer is made to perform a supply step of supplying the power to the load.

According to the present invention, it is possible to continue supplying power to the load even when an abnormality occurs in the commercial power supply and the battery.

It is a block diagram which shows the structure of the uninterruptible power supply of one Embodiment of this invention. It is a figure which shows the structure of the power supply system of one Embodiment of this invention. It is a figure which shows the setting of the switch in the uninterruptible power supply of one Embodiment of this invention. It is a flowchart which shows the operation of the uninterruptible power supply of one Embodiment of this invention. It is a figure which shows the structure of the modification of the power supply system of one Embodiment of this invention. It is a block diagram which shows the minimum structure of the power supply device of one Embodiment of this invention.

Hereinafter, an uninterruptible power supply device (hereinafter referred to as UPS) according to an embodiment of the present invention will be described with reference to the drawings. UPS can be generally called a power supply device. FIG. 1 is a block diagram showing a configuration of UPS according to the same embodiment. FIG. 2 is a diagram showing a configuration of a power supply system having a plurality of UPS according to the same embodiment.

The power supply system 10 shown in FIG. 2 includes three UPS1, UPS2, and UPS3 built in the rack 11. Adjacent UPS1 and UPS2 can supply power to each other. Adjacent UPS2 and UPS3 can supply power to each other.

For example, the rack 11 includes a plurality of storage units. The three UPSs are arranged in different storage units. At least two UPSs may be arranged in the same stage storage.

FIG. 1 shows the configurations of UPS1, UPS2, and UPS3. The configurations of UPS1 and UPS3 are the same as those of UPS2. The configuration of UPS2 shown in FIG. 1 will be described, and the description of the configurations of UPS1 and UPS3 will be omitted. UPS2 shown in FIG. 1 includes a communication unit 200, a communication unit 201, a power receiving unit 210, a power feeding unit 211, a power feeding unit 220, a power receiving unit 221 and a switch 230, a switch 231 and a switch 232, a determination unit 240, and a battery abnormality detecting unit 250. It includes a battery 260, an AC / DC converter 270, a DC / AC converter 280, and a commercial power supply abnormality detection unit 290.

The communication unit 200 communicates with the communication unit 100 of UPS1. The communication unit 200 receives the information of UPS1 from the communication unit 100 and outputs the information to the determination unit 240. The communication unit 200 transmits the information of UPS2 managed by the determination unit 240 to the communication unit 100. For example, the communication unit 200 periodically communicates with the communication unit 100 at predetermined time intervals.

The communication unit 201 communicates with the communication unit 300 of UPS3. The communication unit 201 receives the information of UPS3 from the communication unit 300 and outputs the information to the determination unit 240. The communication unit 201 transmits the information of UPS2 managed by the determination unit 240 to the communication unit 300. For example, the communication unit 201 periodically communicates with the communication unit 300 at predetermined time intervals.

The communication unit 200 and the communication unit 201 perform wireless communication. The communication unit 200 and the communication unit 100 may be connected by a cable, and the communication unit 200 may communicate with the communication unit 100 via the cable. The communication unit 201 and the communication unit 300 may be connected by a cable, and the communication unit 201 may communicate with the communication unit 300 via the cable.

Each UPS transmits information indicating the load amount, the remaining battery level, the processing time, etc. in the own UPS to the adjacent UPS. In addition, each UPS receives information indicating the load amount, the remaining battery level, the processing time, and the like in other adjacent UPSs from the UPS. The load amount is the electric power required to drive the load connected to each UPS. The remaining battery level is the amount of power remaining in the battery included in each UPS. The processing time is the time required for a device such as a server connected to the UPS to back up and shut down data. The processing time is the time required for the processing performed by the load 13 before the power supply to the load 13 is cut off.

The power receiving unit 210 receives power from the power feeding unit 110 of UPS1. The power feeding unit 211 outputs electric power to the power receiving unit 310 of UPS3. The power feeding unit 220 outputs electric power to the power receiving unit 120 of UPS1. The power receiving unit 221 receives power from the power feeding unit 320 of UPS3.

The power feeding unit 211 and the power feeding unit 220 have a non-contact power feeding function. The power receiving unit 210 and the power receiving unit 221 have a non-contact power receiving function. Each UPS can supply power to an adjacent UPS in a non-contact manner. The distance between two UPSs adjacent to each other is maintained at a distance at which electric power can be transmitted in a non-contact manner.

The power receiving unit 210 and the power feeding unit 110 may be connected by a cable, and the power receiving unit 210 may receive power from the power feeding unit 110 via the cable. The power feeding unit 211 and the power receiving unit 310 may be connected by a cable, and the power feeding unit 211 may output power to the power receiving unit 310 via the cable. The power feeding unit 220 and the power receiving unit 120 may be connected by a cable, and the power feeding unit 220 may output power to the power receiving unit 120 via the cable. The power receiving unit 221 and the power feeding unit 320 may be connected by a cable, and the power receiving unit 221 may receive power from the power feeding unit 320 via the cable.

When the power supply unit 211 and the power supply unit 220 do not need to output power to another UPS, the power supply unit 211 and the power supply unit 220 may stop the operation. When the power receiving unit 210 and the power receiving unit 221 do not need to receive power from another UPS, the power receiving unit 210 and the power receiving unit 221 may stop the operation.

The switch 230 includes a terminal NC1, a terminal NO1, and a terminal COM1. The terminal NC1 is connected to the power receiving unit 210. Terminal NO1 is connected to the commercial power supply 12. The switch 230 electrically connects the terminal COM1 to either the terminal NC1 or the terminal NO1.

The switch 231 includes a terminal NC2, a terminal NO2, and a terminal COM2. The terminal NC2 is connected to the power receiving unit 221. Terminal NO2 is connected to terminal COM1 of switch 230. The switch 231 electrically connects the terminal COM2 to either the terminal NC2 or the terminal NO2.

The switch 232 includes a terminal NC3, a terminal NO3, and a terminal COM3. The terminal NC3 is connected to the terminal COM2 of the switch 231. Terminal NO3 is open. The switch 232 electrically connects the terminal COM3 to either the terminal NC3 or the terminal NO3.

The switch 230, the switch 231 and the switch 232 are supply units for electrically connecting the UPS 1 or UPS 3 and the load 13 to supply electric power to the load 13. The terminal NC1 of the switch 230 may be connected to the power receiving unit 221 and the terminal NC2 of the switch 231 may be connected to the power receiving unit 210.

The AC / DC inverter 270 is connected to the terminal COM3 of the switch 232 and the DC / AC inverter 280. The AC / DC converter 270 converts the AC voltage output from the terminal COM3 of the switch 232 into a DC voltage, and outputs the DC voltage to the DC / AC converter 280.

The battery 260 is a rechargeable secondary battery. The battery 260 outputs a DC voltage to the DC / AC converter 280. The DC / AC converter 280 converts the DC voltage output from the AC / DC converter 270 or the battery 260 into an AC voltage, and outputs the AC voltage to the power supply unit 220, the power supply unit 211, and the load 13. The load 13 is a device such as a server.

The battery abnormality detection unit 250 detects an abnormality such as a failure of the battery 260. For example, the battery abnormality detection unit 250 periodically monitors the state of the battery 260 at predetermined time intervals. Even when the battery 260 is temporarily removed from the UPS 2 in order to replace the battery 260, the battery abnormality detection unit 250 detects the state as an abnormality. When an abnormality of the battery 260 is detected, the battery abnormality detection unit 250 notifies the determination unit 240 of the abnormality of the battery 260.

The commercial power supply abnormality detection unit 290 detects an abnormality of the commercial power supply 12. For example, the commercial power supply abnormality detection unit 290 periodically monitors the state of the commercial power supply 12 at predetermined time intervals. When an abnormality of the commercial power supply 12 is detected, the commercial power supply abnormality detection unit 290 notifies the determination unit 240 of the abnormality of the commercial power supply 12.

The determination unit 240 is an arithmetic circuit including a CPU (Central Processing Unit) and the like. The determination unit 240 determines whether or not to supply electric power from the UPS 1 or UPS 3 to the load 13 based on the respective states of the battery 260 and the commercial power supply 12. When the battery abnormality detection unit 250 detects the abnormality of the battery 260 and the commercial power supply abnormality detection unit 290 detects the abnormality of the commercial power supply 12, the determination unit 240 determines that the power is supplied from the UPS 1 or UPS 3 to the load 13.

The determination unit 240 calculates the amount of electric power that can be supplied by each of UPS1 and UPS3 based on the information obtained from UPS1 and UPS3. The determination unit 240 determines the UPS for supplying electric power to the load 13 based on the calculated electric energy. The determination unit 240 switches the connection of each of the switch 230, the switch 231 and the switch 232 in order to supply power from the determined UPS to the load 13.

FIG. 3 is a diagram showing the settings of the switch 230, the switch 231 and the switch 232. The setting of each switch shown in FIG. 3 indicates to which terminal each of the terminal COM1 of the switch 230, the terminal COM2 of the switch 231 and the terminal COM3 of the switch 232 is connected.

The setting of each switch when UPS2 performs normal operation will be described. In the switch 230, the terminal NO1 and the terminal COM1 are connected. In switch 231 the terminal NO2 and the terminal COM2 are connected. At switch 232, terminal NC3 and terminal COM3 are connected. At this time, the electric power output from the commercial power source 12 is supplied to the load 13.

The setting of each switch when UPS2 operates by battery will be described. In the switch 230, the terminal NO1 and the terminal COM1 are connected. In switch 231 the terminal NO2 and the terminal COM2 are connected. At switch 232, terminal NO3 and terminal COM3 are connected. At this time, the electric power output from the battery 260 is supplied to the load 13.

The setting of each switch when the UPS 1 supplies power to the load 13 will be described. At the switch 230, the terminal NC1 and the terminal COM1 are connected. In switch 231 the terminal NO2 and the terminal COM2 are connected. At switch 232, terminal NC3 and terminal COM3 are connected. At this time, the power output from the UPS1 battery is supplied to the load 13.

The setting of each switch when the UPS 3 supplies power to the load 13 will be described. In the switch 230, the terminal NO1 and the terminal COM1 are connected. At switch 231 the terminal NC2 and the terminal COM2 are connected. At switch 232, terminal NC3 and terminal COM3 are connected. At this time, the power output from the UPS 2 battery is supplied to the load 13.

FIG. 4 is a flowchart showing the operation of UPS2. The operation of UPS2 will be described with reference to FIG. When UPS2 starts the operation shown in FIG. 4, UPS2 is in normal operation.

The determination unit 240 determines whether or not there is an abnormality in the commercial power supply 12 based on the result of the commercial power supply abnormality detection unit 290 monitoring the state of the commercial power supply 12 (step S100).

If there is no abnormality in the commercial power supply 12, the determination unit 240 repeats the determination in step S100. When there is an abnormality in the commercial power supply 12, the determination unit 240 determines whether or not there is an abnormality in the battery 260 based on the result of the battery abnormality detection unit 250 monitoring the state of the battery 260 (step S110).

If there is no abnormality in the battery 260, the determination unit 240 sets the connection of the switch 230, the switch 231 and the switch 232 for battery operation (step S150). In this case, the determination unit 240 calculates the amount of power (power supply capacity) that can be supplied from the battery of UPS1 or UPS3 to the load 13 based on the information obtained from UPS1 and UPS3 (step S120).

An example in which the determination unit 240 calculates the power supply capacity will be described. The determination unit 240 calculates the amount of power that the battery of UPS1 can supply to the load 13 by subtracting the load amount of UPS1 from the remaining battery level of UPS1. The load amount of UPS1 indicates the amount of power required for the load of UPS1 to shut down. The determination unit 240 calculates the amount of power that the UPS 3 battery can supply to the load 13 by the same method.

The determination unit 240 may calculate the amount of power that the battery of UPS1 can supply to the load 13 based on the processing time obtained from UPS1. For example, the determination unit 240 calculates the amount of power required for the load of UPS1 to shut down by multiplying the amount of load per unit time of UPS1 by the processing time. The load amount per unit time of UPS1 indicates the amount of power per unit time required for the load of UPS1 to shut down. Since each UPS uses a common commercial power supply, if there is an abnormality in the commercial power supply, it is necessary to shut down the respective loads of UPS1, UPS2, and UPS3. Therefore, it is necessary to consider the power supplied by the UPS1 battery to the UPS1 load. The determination unit 240 calculates the amount of power that the UPS1 battery can supply to the load 13 by subtracting the amount of power required for the UPS1 load to shut down from the remaining amount of the UPS1 battery. The determination unit 240 may calculate the amount of power that the battery of UPS3 can supply to the load 13 by the same method as this.

The determination unit of each UPS may calculate the amount of power that the battery of its own UPS can supply to the load of another UPS. That is, the determination unit of each UPS may calculate the power supply capacity of its own UPS. The communication unit of each UPS may transmit information on the power supply capacity of its own UPS to the communication unit of another UPS. When the information on the power supply capacity of each of UPS1 and UPS3 can be obtained from each UPS, the determination unit 240 does not have to calculate the power supply capacity in step S120.

The determination unit 240 may calculate the feedable capacity when other UPS information is obtained. For example, the determination unit 240 periodically acquires information on other UPS and calculates the power supply capacity. When there is an abnormality in the commercial power supply 12 and the load 13, the determination unit 240 may use the pre-calculated power supply capacity without executing step S120.

After calculating the power supply capacity, the determination unit 240 determines whether or not the battery of UPS1 or UPS3 can supply power to the load 13 (step S130). When the power supply capacity is equal to or greater than the electric energy required by the load 13, the UPS1 or UPS3 battery can supply electric power to the load 13. When the power supply capacity is less than the electric energy required by the load 13, the UPS1 battery and the UPS3 battery cannot supply electric power to the load 13.

If the battery of UPS1 and the battery of UPS3 cannot supply power to the load 13, UPS2 terminates the operation. When the battery of UPS1 or UPS3 can supply power to the load 13, the determination unit 240 connects each of the switch 230, the switch 231 and the switch 232 in order to start the power supply from the UPS that can supply the power to the load 13. Switch.

When the battery of UPS1 and the battery of UPS3 can supply power to the load 13, the determination unit 240 selects either UPS1 or UPS3. For example, the determination unit 240 selects UPS having a larger capacity that can be supplied. The determination unit 240 switches the connection of each of the switch 230, the switch 231 and the switch 232 in order to start the power supply from the selected UPS.

When the battery of UPS1 can supply power to the load 13, the switch 230, the switch 231 and the switch 232 are set so that the power receiving unit 210 outputs the power received from the power feeding unit 110 to the AC / DC converter 270. As a result, the switch 230, the switch 231 and the switch 232 start supplying power from the battery of the UPS 1 to the load 13 (step S140). When the battery of UPS3 can supply power to the load 13, the switch 230, the switch 231 and the switch 232 are set to output the power received by the power receiving unit 221 from the power feeding unit 320 to the AC / DC converter 270. As a result, the switch 230, the switch 231 and the switch 232 start supplying power from the battery of the UPS 3 to the load 13 (step S140).

The power supply system 10 may include two UPSs without any one of UPS1, UPS2, and UPS3. For example, the power supply system 10 may include UPS2 and UPS3 without UPS1. Alternatively, the power supply system 10 may include UPS1 and UPS2 without UPS3. The power supply system 10 may include at least four UPSs.

As described above, when there is an abnormality in the commercial power supply 12 and the battery 260, UPS2 starts supplying power from the battery of UPS1 or UPS3 to the load 13. Therefore, the UPS 2 can drive the load 13 without stopping the power supply to the load 13. Since devices such as servers connected to UPS2 can back up data and shut down, it is possible to avoid the occurrence of system down.

Each UPS outputs electric power to another UPS by using the non-contact power supply function. In addition, each UPS transmits information to another UPS by using the wireless communication function. Since a cable for connecting each UPS is not required, each UPS can be easily maintained and safety is improved.

The program for realizing the process shown in FIG. 4 may be recorded on a computer-readable recording medium. The computer system may read and execute the program recorded on this recording medium. The term "computer system" as used herein includes hardware such as an OS and peripheral devices. In addition, the "computer system" shall also include a WWW system provided with a homepage providing environment (or display environment). Further, the "computer-readable recording medium" refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, or a CD-ROM, or a storage device such as a hard disk built in a computer system. Furthermore, a "computer-readable recording medium" is a volatile memory (RAM) inside a computer system that serves as a server or client when a program is transmitted via a network such as the Internet or a communication line such as a telephone line. In addition, it shall include those that hold the program for a certain period of time.

Further, the program may be transmitted from a computer system in which this program is stored in a storage device or the like to another computer system via a transmission medium or by a transmission wave in the transmission medium. Here, the "transmission medium" for transmitting a program refers to a medium having a function of transmitting information, such as a network (communication network) such as the Internet or a communication line (communication line) such as a telephone line. Further, the above program may be for realizing a part of the above-mentioned functions. Further, a so-called difference file (difference program) may be used, which can realize the above-mentioned functions in combination with a program already recorded in the computer system.

FIG. 5 is a diagram showing a configuration of a modified example of the power supply system according to the present embodiment. The power supply system 10a shown in FIG. 5 includes nine UPS1, UPS2, UPS3, UPS4, UPS5, UPS6, UPS7, UPS8, and UPS9 built in the rack 11. The two UPSs arranged in the adjacent two-stage storage unit can supply power to each other. Two UPSs adjacent to each other in the storage section of the same stage can supply power to each other.

UPS1, UPS4, and UPS7 are arranged in the storage section of the same stage. UPS2, UPS5, and UPS8 are arranged in the storage section of the same stage. UPS3, UPS6, and UPS9 are arranged in the storage section of the same stage.

For example, UPS2 can receive power from UPS1, UPS3, UPS5, and UPS8. UPS2 can supply power to UPS1, UPS3, UPS5, and UPS8.

When there is an abnormality in the commercial power supply 12 and the load 13, the determination unit 240 of the UPS2 calculates the power supply capacity based on the information of the four UPSs. The determination unit 240 determines one UPS capable of supplying electric power to the load 13 based on the calculated power supply capacity. The determination unit 240 switches the setting of each switch in order to supply power from the determined UPS to the load 13.

FIG. 6 is a diagram showing a minimum configuration of the power supply device according to the present embodiment. The power supply device 20 according to the present embodiment may include at least a determination unit 21 and a supply unit 22. The determination unit 21 determines whether or not to supply electric power from another power supply device to the load based on the respective states of the battery and the commercial power source. When there is an abnormality in the battery and the commercial power supply, the determination unit 21 determines that the electric power is supplied from another power supply device to the load. When the determination unit 21 determines that the power is supplied from the other power supply device to the load, the supply unit 22 electrically connects the other power supply device and the load and supplies the power to the load.

Although the embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to the above embodiments, and includes design changes and the like within a range that does not deviate from the gist of the present invention. ..

According to the embodiment of the present invention, the power supply to the load can be continued even when an abnormality occurs in the commercial power supply and the battery.

1,2,3,4,5,6,7,8,9 ... UPS
10, 10a ... Power supply system 20 ... Power supply device 21,240 ... Judgment unit 22 ... Supply unit 100, 200, 201, 300 ... Communication unit 110, 211, 220, 320 ...・ ・ Power supply unit 120, 210, 211, 310 ・ ・ ・ Power receiving unit 230, 231,232 ・ ・ ・ Switch 250 ・ ・ ・ Battery abnormality detection unit 260 ・ ・ ・ Battery 270 ・ ・ ・ AC / DC converter 280 ・ ・ ・DC / AC converter 290 ... Commercial power supply abnormality detector

According to the first aspect of the present invention, the power supply device determines whether or not to supply power from another power supply device to the load based on the respective states of the battery and the commercial power supply, and determines whether or not to supply power from the battery and the commercial power supply. When there is an abnormality in the commercial power supply, the determination unit determines that the power is supplied from the other power supply device to the load, and the determination unit determines that the power is supplied from the other power supply device to the load. If so, the other power supply device and the load are electrically connected to each other, and the supply unit for supplying the power to the load is provided , and the determination unit includes at least two other power supply devices. Based on the information obtained from, the amount of power that can be supplied by the other power supply device is calculated, and based on the calculated amount of power, the other power supply device that supplies the power to the load is determined. The supply unit supplies the power to the load from the other power supply device determined by the determination unit .

According to a second aspect of the present invention, the power supply system comprises at least three power supply devices, each said power supply device providing power to another based on the respective states of the battery and the commercial power source. A determination unit that determines whether or not to supply power from the power supply device to the load, and if there is an abnormality in the battery and the commercial power supply, determines that the power is supplied to the load from the other power supply device, and the power. When the determination unit determines that the other power supply device supplies the load to the load, the supply unit that electrically connects the other power supply device and the load and supplies the power to the load. The determination unit calculates the amount of power that can be supplied by the other power supply device based on the information obtained from at least two other power supply devices, and based on the calculated power amount, The other power supply device for supplying the power to the load is determined, and the supply unit supplies the power to the load from the other power supply device determined by the determination unit .

According to the third aspect of the present invention, in the power supply method, the determination unit determines whether or not to supply power from another power supply device to the load based on the respective states of the battery and the commercial power supply. When there is an abnormality in the battery and the commercial power supply, a determination step of determining that the power is supplied from the other power supply device to the load, and a determination that the power is supplied from the other power supply device to the load. When the determination is made in the step, the supply unit includes a supply step of electrically connecting the other power supply device and the load and supplying the power to the load, and the determination unit includes the determination step. In, the amount of power that can be supplied by the other power supply device is calculated based on the information obtained from at least two other power supply devices, and the power is transferred to the load based on the calculated power amount. The other power supply device to be supplied is determined, and the supply unit supplies the power to the load from the other power supply device determined by the determination unit in the supply step .

According to a fourth aspect of the present invention, the program determines whether to supply power from another power supply device to the load based on the respective states of the battery and the commercial power source, and determines whether or not to supply power to the load from the battery and the commercial power supply. When there is an abnormality in the power supply, it is determined in the determination step that the power is supplied from the other power supply device to the load and that the power is supplied from the other power supply device to the load. In this case, it is a program for causing a computer to perform a supply step of electrically connecting the other power supply device and the load and supplying the power to the load, and in the determination step, at least 2 The amount of power that can be supplied by the other power supply device is calculated based on the information obtained from the other power supply devices, and the power is supplied to the load based on the calculated power amount. The power supply device is determined, and in the supply step, the power is supplied to the load from the other power supply device determined in the determination step .

Claims (8)

Based on the respective states of the battery and the commercial power supply, it is determined whether or not to supply power from the other power supply device to the load, and if there is an abnormality in the battery and the commercial power supply, the power is used as the other power. A determination unit that determines that the load is supplied from the supply device, and
When the determination unit determines that the power is supplied from the other power supply device to the load, the supply unit that electrically connects the other power supply device and the load and supplies the power to the load. When,
A power supply device equipped with. The determination unit calculates the amount of electric power that can be supplied by the other electric power supply device based on the information obtained from at least two other electric power supply devices, and calculates the electric power based on the calculated electric energy amount. Determine the other power supply device to supply to the load and
The power supply device according to claim 1, wherein the supply unit supplies the power to the load from the other power supply device determined by the determination unit. The power supply device according to claim 2, wherein the information indicates an amount of power required to drive a load in the other power supply device. The power supply device according to claim 2 or 3, wherein the information indicates the remaining amount of another battery in the other power supply device. The power supply device according to any one of claims 2 to 4, wherein the information indicates a time required for processing performed by a load in the other power supply device. Equipped with at least two power supply devices
Each said power supply device
Based on the respective states of the battery and the commercial power supply, it is determined whether or not to supply power from the other power supply device to the load, and if there is an abnormality in the battery and the commercial power supply, the power is used as the other power. A determination unit that determines that the load is supplied from the supply device, and
When the determination unit determines that the power is supplied from the other power supply device to the load, the supply unit that electrically connects the other power supply device and the load and supplies the power to the load. When,
Power supply system with. Based on the respective states of the battery and the commercial power supply, it is determined whether or not to supply power from the other power supply device to the load, and if there is an abnormality in the battery and the commercial power supply, the power is used as the other power. A determination step for determining that the load is supplied from the supply device, and
When it is determined in the determination step that the power is supplied from the other power supply device to the load, the other power supply device and the load are electrically connected, and the power is supplied to the load. Steps and
Power supply method including. Based on the respective states of the battery and the commercial power supply, it is determined whether or not to supply power from the other power supply device to the load, and if there is an abnormality in the battery and the commercial power supply, the power is used as the other power. A determination step for determining that the load is supplied from the supply device, and
When it is determined in the determination step that the power is supplied from the other power supply device to the load, the other power supply device and the load are electrically connected, and the power is supplied to the load. Steps and
A program that lets your computer run.

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