JP2013115984A - Power supply unit, power supply system, and charge and discharge method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply unit that receives DC power converted by a converter device and identifies a frequency to be output.SOLUTION: The power supply unit 220 includes: a charge section 222 for charging, into a secondary cell 221, DC power converted from AC power by a converter device 210; a frequency information acquisition section 223 for acquiring, from the outside, frequency information that is the information relating to a frequency to output electric power; and an inverter section 225 for converting output power of the secondary cell 221 into AC power with a frequency discriminated from the frequency information.

Description

  The present invention relates to a power supply device including a secondary battery, a power supply system including the power supply device, and a charging / discharging method of the power supply device.

  Conventionally, a power supply device called UPS (Uninterruptable Power Supply) that can supply power to a power supply destination device even when a commercial power failure occurs has been used. Such a power supply device generally includes a secondary battery therein, and converts the power stored in the secondary battery into AC power and outputs it when a commercial power supply fails.

By the way, the frequency corresponding to the input is determined for each device of the power supply destination. Many of these are determined by the region where the device is used. For example, in Japan, depending on the installation area, it is determined which frequency of 50 Hz or 60 Hz AC power is supported.
Therefore, the power supply device needs to specify the frequency to be output when supplying power.

  Patent Document 1 discloses a technology of a protective relay that specifies a frequency to be output. Specifically, the protective relay described in Patent Document 1 receives an input of an AC power supply, and performs frequency determination by sampling the AC power supply. By determining the frequency using the same method in the power supply device, the frequency can be specified and power can be supplied.

Japanese Patent Application No. 2006-333536

  By the way, a power supply device such as a UPS is manufactured on the assumption that the power receiving place and the power transmitting place are the same. Therefore, a secondary battery, a converter that converts AC power from a commercial power source into DC power for charging the secondary battery, and an inverter that converts the output power of the secondary battery into AC power and outputs the integrated structure Has been. Therefore, since a power supply device enlarges, there exists a problem that conveyance is difficult when conveying a power supply device to the area where the power failure has generate | occur | produced.

  Therefore, it is conceivable to reduce the weight of the power supply device by making the converter and the power supply device that are not used in the power transmission place separate. However, in this case, since the power input to the power supply device is DC power converted by the converter, there is a problem that the frequency cannot be specified using the method described in Patent Document 1.

  If the frequency to be output cannot be specified, the power supply device can output a moderate frequency (for example, 55 Hz if the frequency to be output is either 50 Hz or 60 Hz). In this case, there is a problem that power cannot be supplied to a device such as a medical device that generates a clock signal from the frequency of the power source.

  The objective of this invention is providing the power supply device, power supply system, and charging / discharging method which solve the subject mentioned above.

  The present invention has been made to solve the above-described problems, and relates to a charging unit that charges a secondary battery with DC power converted from AC power by an external converter device, and a frequency at which the power is to be output. A frequency information acquisition unit that acquires frequency information, which is information to be performed, and an inverter unit that converts the output power of the secondary battery into AC power having a frequency determined from the frequency information. .

  Further, in the present invention, the frequency information acquisition unit acquires an AC signal included in DC power converted from AC power by the converter device as the frequency information, and the inverter unit includes the secondary battery. The output power is preferably converted into AC power having the same frequency as the frequency of the AC signal acquired by the frequency information acquisition unit.

  In the present invention, the frequency of the electric power converted by the inverter unit is either the first frequency or the second frequency, and the reproducing unit reproduces the alternating-current signal of the first frequency; A synthesizing unit that synthesizes the AC signal acquired by the frequency information acquisition unit and the AC signal reproduced by the reproducing unit, and the inverter unit has a constant peak value of the signal output by the synthesizing unit When the output power of the secondary battery is converted into AC power of the first frequency and the peak value of the signal output from the combining unit is not constant, the output power of the secondary battery is converted to the second power. It is preferable to convert into alternating current power of frequency.

  Further, in the present invention, for each frequency at which power is to be output, an AC power output end converted by the inverter unit, a socket unit into which a plug extending from a power supply target is inserted, the socket unit and the frequency The frequency information acquisition unit acquires information indicating which socket unit the plug has been inserted into as the frequency information, and the inverter unit stores the secondary battery. It is preferable that the output power is converted into AC power having a frequency stored in the corresponding socket storage unit in association with the socket unit in which the plug is inserted.

  The present invention is also a power supply system including the power supply device and the converter device, wherein the converter device is supplied from the external power supply and a converter unit that converts AC power supplied from an external power supply into DC power. A frequency specifying unit that specifies the frequency of the alternating current power, and a frequency information output unit that outputs frequency information indicating the frequency specified by the frequency specifying unit to the power supply device, and the frequency information acquisition unit of the power supply device includes: The frequency information output from the converter device is acquired, and the inverter unit of the power supply device converts the output power of the secondary battery into AC power having a frequency indicated by the frequency information.

  The present invention further includes a regional information storage unit that stores the frequency of power and a region where power of the frequency is to be supplied in association with each other, and the frequency information acquisition unit stores information on a region in which the device is present. The frequency acquired as frequency information and associated with the area and specified in the area information storage unit is specified, and the inverter unit outputs the output power of the secondary battery at the frequency specified by the frequency information acquisition unit. It is preferable to convert to electric power.

  Further, the present invention is a power supply system including the power supply device and a connector for connecting the power supply device and a power supply target, wherein the connector indicates frequency information indicating a frequency for requesting an output from the power supply device. The frequency information output unit of the power supply device acquires the frequency information output from the connector, and the inverter unit of the power supply device outputs the output of the secondary battery. The power is converted into AC power having a frequency indicated by the frequency information and output to the power supply target through the connector.

  Further, in the present invention, the connector includes a frequency specifying unit that specifies a frequency of AC power supplied from the external power supply when the power supply target and an external power supply are connected, and frequency information of the connector The output unit preferably outputs frequency information indicating the frequency specified by the frequency specifying unit to the power supply device.

  The present invention is also a method for charging and discharging a power supply device, wherein a charging unit of the power supply device charges a secondary battery with DC power converted from AC power by an external converter device; and the power supply The frequency information acquisition unit of the device acquires the frequency information that is information related to the frequency of the power to be output from the power supply device from the outside, and the inverter unit of the power supply device outputs the output power of the secondary battery, Converting to AC power having a frequency determined from the frequency information.

  According to the present invention, since the frequency information acquisition unit that acquires frequency information from the outside is provided, the frequency to be output can be specified even in the power supply device that receives the DC power converted by the converter device.

It is a schematic block diagram which shows the structure of the power supply system by the 1st Embodiment of this invention. It is a flowchart which shows the operation | movement at the time of charge of the power supply device by the 1st Embodiment of this invention, and discharge. It is a schematic block diagram which shows the structure of the power supply system by the 2nd Embodiment of this invention. It is a flowchart which shows the operation | movement at the time of discharge of the power supply device by the 2nd Embodiment of this invention. It is a schematic block diagram which shows the structure of the power supply system by the 3rd Embodiment of this invention. It is a sequence diagram which shows the operation | movement at the time of charge of the power supply system by the 3rd Embodiment of this invention. It is a schematic block diagram which shows the structure of the power supply system by the 4th Embodiment of this invention. It is a figure which shows the external appearance of a power supply device and a connector. It is a sequence diagram which shows the operation | movement at the time of discharge of the power supply system by the 4th Embodiment of this invention. It is a schematic block diagram which shows the structure of the power supply system by the 5th Embodiment of this invention. It is a flowchart which shows the operation | movement at the time of discharge of the power supply device by the 5th Embodiment of this invention.

<< First Embodiment >>
Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a schematic block diagram showing the configuration of the power supply system according to the first embodiment of the present invention.
The power supply system according to the first embodiment includes the converter device 10 and the power supply device 20 as separate devices. Converter device 10 converts AC power supplied from an external power source such as a commercial power source into DC power. The power supply device 20 charges the internal secondary battery 21 with the electric power converted by the converter device 10 into direct current, converts the electric power stored in the secondary power supply into alternating current power, and outputs it to the outside. In the present embodiment, the frequency of the AC power supplied from the external power source and the AC power requested by the power supply destination is either 50 Hertz (first frequency) or 60 Hertz (second frequency). The case will be described.

The power supply device 20 includes a secondary battery 21, a charging unit 22, an AC signal extraction unit 23 (frequency information acquisition unit), a reproduction unit 24, a synthesis unit 25, a frequency determination unit 26, a frequency storage unit 27, an inverter unit 28, and a socket unit. 29.
Charging unit 22 charges secondary battery 21 with the DC power converted by converter device 10.
The AC signal extraction unit 23 extracts a minute AC signal (ripple) included in the DC power converted by the converter device 10.
The reproducing unit 24 reproduces a 50 Hz AC signal.
The synthesizer 25 synthesizes the AC signal extracted by the AC signal and the AC signal reproduced by the reproducing unit 24.
The frequency determination unit 26 determines the frequency of the AC signal extracted by the AC signal extraction unit 23 by monitoring the peak of the signal output from the synthesis unit 25.
The frequency storage unit 27 stores the frequency determined by the frequency determination unit 26.
The inverter unit 28 converts the output power of the secondary battery 21 into AC power having a frequency stored in the frequency storage unit 27.
The socket unit 29 is inserted with a plug extending from a load to be supplied with power, and supplies AC power output from the inverter unit 28 through the plug.

Next, the operation during charging of the power supply device 20 according to the present embodiment will be described.
FIG. 2 is a flowchart showing operations during charging and discharging of the power supply device according to the first embodiment of the present invention.
When the supply of DC power from the converter device 10 starts, the charging unit 22 of the power supply device 20 starts charging the secondary battery 21 with the DC power (step S1). Next, the AC signal extraction unit 23 extracts an AC signal included in the DC power supplied from the converter device 10 (step S2). Next, the reproducing unit 24 reproduces a 50 Hz AC signal (step S3). In addition, it is preferable that the said AC signal has an amplitude comparable as the amplitude of the AC signal contained in DC power. Next, the synthesizing unit 25 synthesizes the AC signal extracted by the AC signal extracting unit 23 and the AC signal reproduced by the reproducing unit 24 (step S4).

  Next, the frequency determination unit 26 monitors the peak value of the signal output from the synthesis unit 25, and determines whether each peak value is constant (step S5). Note that a composite signal of sine waves of the same frequency becomes a sine wave of the same frequency, and a composite signal of sine waves of different frequencies becomes a beat signal. Therefore, when the AC signal extracted by the AC signal extraction unit 23 and the AC signal reproduced by the reproduction unit 24 have the same frequency, each peak value of the signal output from the synthesis unit 25 is constant. On the other hand, when the AC signal extracted by the AC signal extraction unit 23 and the AC signal reproduced by the reproduction unit 24 have different frequencies, each peak value of the signal output by the synthesis unit 25 is different.

  When the frequency determination unit 26 determines that each peak value of the signal output from the synthesis unit 25 is constant (step S5: YES), it records that the frequency is 50 hertz in the frequency storage unit 27 (step S6). ). On the other hand, when the frequency determination unit 26 determines that each peak value of the signal output from the synthesis unit 25 is not constant (step S5: NO), it records that the frequency is 60 hertz in the frequency storage unit 27 (step S5). S7).

Next, the operation at the time of discharging of the power supply device 20 according to the present embodiment will be described. In addition, the power supply device 20 is disconnected from the converter device 10 between the charging and discharging of the power supply device 20 and is transported to a place where the discharge is performed.
When the plug connected to the load is inserted into the socket unit 29, the inverter unit 28 reads information indicating the frequency from the frequency storage unit 27 (step S8). Next, the DC power output from the secondary battery 21 is converted into AC power having the frequency indicated by the read information, and the AC power is supplied to the load via the socket unit 29 and the plug (step S9). . That is, when it is recorded in the frequency storage unit 27 that the frequency is 50 hertz in step S6, the inverter unit 28 outputs AC power of 50 hertz in step S9. On the other hand, when it is recorded in the frequency storage unit 27 that the frequency is 60 Hz in step S7, the inverter unit 28 outputs 60 Hz AC power in step S9.

  Thus, according to the present embodiment, the power supply device 20 acquires an AC signal that is frequency information from the DC power output by the converter device 10 and specifies the frequency to be output. Thereby, the power supply apparatus 20 can specify the frequency which should be output, charging with the direct-current power from the external converter apparatus 10. FIG.

  Further, according to the present embodiment, in order to specify the frequency of the AC signal included in the DC power, a 50 Hz AC signal that is one of the two frequencies to be output is generated, and the AC signal is generated. And the peak value of the signal obtained by combining the AC signal included in the DC power. As a result, the frequency can be specified with a simple configuration, and the apparatus can be downsized.

  In the present embodiment, the reproducing unit 24 reproduces a 50 Hz signal, and the frequency determining unit 26 stores 50 Hz when the peak value of the synthesized signal is constant, and 60 Hz when the peak value is not constant. Although the case of recording in the unit 27 has been described, the present invention is not limited to this. That is, the reproduction unit 24 reproduces a signal of 60 Hz, and the frequency determination unit 26 records 60 Hz in the frequency storage unit 27 when the peak value of the composite signal is constant, and 50 Hz when the peak value of the composite signal is not constant. It may be a configuration.

<< Second Embodiment >>
Hereinafter, a second embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 3 is a schematic block diagram showing the configuration of the power supply system according to the second embodiment of the present invention.
As in the first embodiment, the power supply system according to the second embodiment includes the converter device 110 and the power supply device 120 as separate devices. The frequency of the AC power supplied from the external power source and the AC power requested by the power supply destination is either 50 Hz or 60 Hz.

The power supply device 120 includes a secondary battery 121, a charging unit 122, socket units 123-1 and 123-2 (hereinafter, the socket units 123-1 and 123-2 are collectively referred to as a socket unit 123), a socket specification Unit 124 (frequency information acquisition unit), corresponding socket storage unit 125, frequency determination unit 126, and inverter unit 127.
Charging unit 122 charges secondary battery 121 with the DC power converted by converter device 110.
The socket part 123 is inserted with a plug extending from a load to be supplied with power, and supplies AC power output from the inverter part 127 through the plug. The socket portion 123 is provided corresponding to the frequency to be output, the socket portion 123-1 is an output end of power for 50 hertz, and the socket portion 123-2 is an output end of power for 60 hertz. is there.
The socket specifying unit 124 specifies in which of the sockets 123 the plug has been inserted.
The corresponding socket storage unit 125 stores the socket unit 123 and the frequency to be output from the socket unit 123 in association with each other.
The frequency determining unit 126 determines the frequency of the AC signal based on the socket unit 123 specified by the socket specifying unit 124 and the information stored in the corresponding socket storage unit 125.
The inverter unit 127 converts the output power of the secondary battery 121 into AC power having the frequency determined by the frequency determination unit 126.

  In this embodiment, when supply of DC power from converter device 110 starts, charging unit 122 of power supply device 120 starts charging secondary battery 121 with the DC power. The operation at the time of charging the power supply device 120 is as described above.

Next, the operation at the time of discharging of the power supply device 120 according to the present embodiment will be described.
FIG. 4 is a flowchart showing an operation during discharging of the power supply device 120 according to the second embodiment of the present invention. In addition, the power supply device 120 is disconnected from the converter device 110 between the charging and discharging of the power supply device 120 and is transported to a place where discharging is performed.
When the plug connected to the load is inserted into the socket part 123, the socket specifying part 124 specifies the socket part 123 in which the plug is inserted (step S101). Next, the frequency determination unit 126 reads the frequency associated with the socket unit 123 specified by the socket specifying unit 124 from the corresponding socket storage unit 125 (step S102). The inverter unit 127 converts the DC power output from the secondary battery 121 into AC power having the frequency read by the frequency determination unit 126, and supplies the AC power to the load via the socket unit 123 and the plug. (Step S103).

  Thus, according to the present embodiment, the power supply device 120 acquires information indicating the socket unit 123 associated with the frequency, which is information related to the frequency, by inserting the plug, and specifies the frequency to be output. Thereby, the power supply device 120 can specify the frequency to be output while charging with the DC power from the external converter device 110. Further, according to the present embodiment, even when the frequency of power required for the area where charging is performed is different from the area where discharging is performed, the plug is inserted into the socket portion 123 corresponding to the frequency of the area where discharging is performed. Thus, AC power with an appropriate frequency can be output.

  In the present embodiment, the case where there are two types of frequencies to be output, 50 Hz and 60 Hz, has been described, but the present invention is not limited to this. For example, the configuration may be such that three or more socket parts 123 are provided and three or more types of frequencies are switched and output.

<< Third Embodiment >>
Hereinafter, the third embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 5 is a schematic block diagram showing the configuration of the power supply system according to the third embodiment of the present invention.
As in the first embodiment, the power supply system according to the third embodiment includes the converter device 210 and the power supply device 220 as separate devices.

The converter device 210 includes a converter unit 211, a frequency specifying unit 212, and a frequency information output unit 213.
Converter unit 211 converts AC power supplied from an external power source into DC power.
The frequency specifying unit 212 specifies the frequency of AC power supplied from an external power source.
The frequency information output unit 213 outputs frequency information indicating the frequency specified by the frequency specifying unit 212 to the power supply device 220.

The power supply device 220 includes a secondary battery 221, a charging unit 222, a frequency information acquisition unit 223, a frequency storage unit 224, an inverter unit 225, and a socket unit 226.
Charging unit 222 charges secondary battery 221 with the DC power converted by converter device 210.
The frequency information acquisition unit 223 acquires frequency information from the converter device 210 and records it in the frequency storage unit 224.
The frequency storage unit 224 stores the frequency acquired by the frequency information acquisition unit 223.
The inverter unit 225 converts the output power of the secondary battery 221 into AC power having a frequency indicated by the frequency information stored in the frequency storage unit 224.
The socket unit 226 is inserted with a plug extending from a load to be supplied with power, and supplies AC power output from the inverter unit 225 via the plug.

Next, an operation during charging of the power supply device 220 according to the present embodiment will be described.
FIG. 6 is a sequence diagram showing an operation during charging of the power supply system according to the third embodiment of the present invention.
When the external power supply and the converter device 210 are connected, and the converter device 210 and the power supply device 220 are connected, the converter unit 211 of the converter device 210 converts AC power supplied from the external power source into DC power and supplies power. The data is output to the device 220 (step S201). Charging unit 222 of power supply device 220 starts charging secondary battery 221 with the DC power output from converter device 210 (step S202).

  At this time, the frequency specifying unit 212 of the converter device 210 samples the AC power supplied from the external power source, and specifies the frequency of the AC power (step S203). Next, the frequency information output unit 213 generates frequency information indicating the frequency specified by the frequency specifying unit 212, and outputs the frequency information to the power supply apparatus 220 (step S204). Next, the frequency information acquisition unit 223 of the power supply device 220 acquires the frequency information output from the converter device 210 (step S205). Then, the frequency information acquisition unit 223 records the acquired frequency information in the frequency storage unit 224 (step S206).

  Note that the operation of the power supply device 220 according to the present embodiment during discharging is the same as the operation of the power supply device 220 according to the first embodiment during discharging.

  Thus, according to the present embodiment, converter device 210 identifies the frequency of AC power and outputs frequency information indicating the frequency. Then, the power supply device 220 acquires frequency information from the converter device 210 and specifies a frequency to be output. Thereby, the power supply apparatus 220 can specify the frequency which should be output, charging with the direct-current power from the external converter apparatus 210. FIG.

<< Fourth Embodiment >>
Hereinafter, a fourth embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 7 is a schematic block diagram showing the configuration of the power supply system according to the fourth embodiment of the present invention.
The power supply system according to the fourth embodiment includes a converter device 310, a power supply device 320, and a connector 330. The connector 330 is a device connected between the power supply device 320 and a load to be supplied with power, and transmits power supplied from the power supply device 320 to the load.

The power supply device 320 includes a secondary battery 321, a charging unit 322, a frequency information acquisition unit 323, an inverter unit 324, and a socket unit 325.
Charging unit 322 charges secondary battery 321 with the DC power converted by converter device 310.
The frequency information acquisition unit 323 acquires frequency information indicating the frequency of power to be supplied to the load from the connector 330 connected to the socket unit 325. The frequency information acquisition unit 323 can specify frequency information based on the magnetism of an electromagnet (not shown) provided in the connector 330 obtained from, for example, a built-in magnetic sensor (not shown).
The inverter unit 324 converts the output power of the secondary battery 321 into AC power having the frequency indicated by the frequency information acquired by the frequency information acquisition unit 323.
The socket unit 325 is inserted with a plug of the connector 330 and supplies AC power output from the inverter unit 324 to the load via the connector 330.

The connector 330 includes a frequency specifying unit 331, a frequency storage unit 332, and a frequency information output unit 333.
The frequency specifying unit 331 monitors the AC power supplied from the connected external power supply, specifies the frequency of the AC power, and records frequency information indicating the frequency in the frequency storage unit 332.
The frequency storage unit 332 stores frequency information indicating the frequency of power to be supplied to the load.
The frequency information output unit 333 outputs the frequency information stored in the frequency storage unit 332 to the power supply device 320. The frequency information acquisition unit 323 can output desired frequency information, for example, by changing the magnetism of the built-in electromagnet.

FIG. 8 is a diagram showing the external appearance of the power supply device 320 and the connector 330.
As shown in FIG. 8, when the plug of the connector 330 is inserted into the socket portion 325 of the power supply device 320, the power supply device 320 and the power supply device 320 are arranged so that the electromagnet provided in the connector 330 faces the magnetic sensor of the power supply device 320 A connector 330 is configured.

  In this embodiment, when the supply of DC power from the converter device 310 starts, the charging unit 322 of the power supply device 320 starts charging the secondary battery 321 with the DC power. The operation at the time of charging the power supply device 320 is as described above.

Next, the operation at the time of discharging of the power supply system according to the present embodiment will be described.
FIG. 9 is a sequence diagram showing an operation during discharging of the power supply system according to the fourth embodiment of the present invention. Note that the power supply device 320 is disconnected from the converter device 310 between the charging and discharging of the power supply device 320 and transported to a place where discharging is performed.

  In the area to be discharged, when there is no power outage in the area, the connector 330 is installed to connect the commercial power source, which is an external power source, and the load to be supplied with power, and loads AC power supplied from the commercial power source. Transmit to. At this time, the frequency specifying unit 331 of the connector 330 monitors the AC power supplied from the commercial power source and specifies the frequency of the AC power (step S401). Next, the frequency specifying unit 331 records frequency information indicating the specified frequency in the frequency storage unit 332 (step S402). Thereafter, the frequency information output unit 333 outputs the frequency information stored in the frequency storage unit 332 using an electromagnet.

  When a power failure occurs in the area to be discharged, the connector 330 is installed so as to connect the power supply device 320 conveyed from the charging area and the load. At this time, the frequency information output unit 333 of the connector 330 outputs the frequency information stored in the frequency storage unit 332 by an electromagnet (step S403). When the plug of the connector 330 is inserted into the socket portion 325, when the magnetic sensor of the power supply device 320 comes close to the electromagnet of the connector 330, the frequency information acquisition unit 323 of the power supply device 320 receives the frequency from the connector 330 via the magnetic sensor. Information is acquired (step S404). Then, the inverter unit 324 converts the DC power output from the secondary battery 321 into AC power having the frequency indicated by the frequency information acquired by the frequency information acquisition unit 323, and the AC power is converted into the socket unit 325 and the connector 330. (Step S405).

  Thus, according to the present embodiment, the power supply device 320 acquires frequency information from the connector 330 and specifies a frequency to be output. As a result, the power supply device 320 can specify the frequency to be output while charging with the DC power from the external converter device 310. Further, according to the present embodiment, the connector 330 storing the frequency of the area to be discharged is inserted into the socket portion 325 even when the required power frequency is different between the area to be charged and the area to be discharged. Thus, AC power with an appropriate frequency can be output.

  In addition, although this embodiment demonstrated the case where frequency information was exchanged via an electromagnet and a magnetic sensor, it is not restricted to this. For example, an RFID (Radio Frequency Identification) tag may be provided in the connector 330 and an RFID reader may be provided in the power supply device 320 so that frequency information may be exchanged using these. Further, a communication line for exchanging frequency information may be provided, and the frequency information may be exchanged via the communication line.

  Moreover, although this embodiment demonstrated the case where the connector 330 was provided with the frequency specific | specification part 331 and the frequency memory | storage part 332, and memorize | stores the frequency of the area which discharges, it is not restricted to this. For example, the frequency information output unit 333 may be configured to fixedly output frequency information indicating the frequency of power supplied in advance in the discharge target area.

<< Fifth Embodiment >>
Hereinafter, a fifth embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 10 is a schematic block diagram showing the configuration of the power supply system according to the fifth embodiment of the present invention.
As in the first embodiment, the power supply system according to the fifth embodiment includes a converter device 410 and a power supply device 420 as separate devices.

The power supply device 420 includes a secondary battery 421, a charging unit 422, a region information storage unit 423, a region information acquisition unit 424 (frequency information acquisition unit), a frequency determination unit 425, an inverter unit 426, and a socket unit 427.
Charging unit 422 charges secondary battery 421 with the DC power converted by converter device 410.
The area information storage unit 423 stores area information such as a postal code or a telephone number in association with the frequency of power supplied in the area indicated by the area information.
The area information acquisition unit 424 acquires area information input from the user.
The frequency determination unit 425 determines the frequency of power to be output based on the region information acquired by the region information acquisition unit 424 and the information stored in the region information storage unit 423.
The inverter unit 426 converts the output power of the secondary battery 421 into AC power having the frequency determined by the frequency determination unit 425.

  In this embodiment, when supply of DC power from converter device 410 starts, charging unit 422 of power supply device 420 starts charging secondary battery 421 with the DC power. The operation at the time of charging of the power supply device 420 is as described above.

Next, the operation at the time of discharging of the power supply device 420 according to the present embodiment will be described.
FIG. 11 is a flowchart showing an operation at the time of discharging of the power supply apparatus 420 according to the fifth embodiment of the present invention. In addition, the power supply device 420 is disconnected from the converter device 410 during the period from the charging to the discharging of the power supply device 420, and is transported to a place where discharging is performed.
When the plug connected to the load is inserted into the socket unit 427, the area information acquisition unit 424 receives an input of area information from the user (step S501). When the regional information acquisition unit 424 acquires the regional information, the frequency determination unit 425 reads the frequency associated with the regional information acquired by the regional information acquisition unit 424 from the regional information storage unit 423 (step S502). Then, the inverter unit 426 converts the DC power output from the secondary battery 421 into AC power having the frequency read by the frequency determination unit 425, and supplies the AC power to the load via the socket unit 427 and the plug. (Step S503).

  As described above, according to the present embodiment, the power supply apparatus 420 acquires regional information, which is information related to frequency, by inserting a plug, and specifies a frequency to be output. As a result, the power supply apparatus 420 can specify the frequency to be output while charging with the DC power from the external converter apparatus 410. In addition, according to the present embodiment, even when the frequency of power required for the area where charging is performed and the area where discharging is performed is different, by inputting area information indicating the area where discharging is performed, an appropriate frequency can be obtained. AC power can be output.

  In the present embodiment, the case where the area information acquisition unit 424 acquires the area information by an input from the user has been described. However, the present invention is not limited to this. For example, the area information acquisition unit 424 uses GPS (Global Positioning System). The acquired latitude and longitude information may be used as regional information.

  Although several embodiments of the present invention have been described in detail with reference to the drawings, the specific configuration is not limited to that described above, and various designs can be made without departing from the scope of the present invention. It is possible to make changes.

  The above-described power supply devices 20, 120, 220, 320, and 420 have a computer system therein. The operation of each processing unit described above is stored in a computer-readable recording medium in the form of a program, and the above processing is performed by the computer reading and executing this program. Here, the computer-readable recording medium means a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, or the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program.

  The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

  DESCRIPTION OF SYMBOLS 10 ... Converter apparatus 20 ... Power supply device 21 ... Secondary battery 22 ... Charging part 23 ... AC signal acquisition part 24 ... Reproduction part 25 ... Synthesis | combination part 26 ... Frequency determination part 27 ... Frequency memory | storage part 28 ... Inverter part 29 ... Socket part 110 ... Converter device 120 ... Power supply device 121 ... Secondary battery 122 ... Charging unit 123 ... Socket unit 124 ... Socket specifying unit 125 ... Corresponding socket storage unit 126 ... Frequency determination unit 127 ... Inverter unit 210 ... Converter device 211 ... Converter unit 212 ... Frequency specifying unit 213 ... Frequency information output unit 220 ... Power supply device 221 ... Secondary battery 222 ... Charging unit 223 ... Frequency information acquisition unit 224 ... Frequency storage unit 225 ... Inverter unit 226 ... Socket unit 310 ... Converter device 320 ... Power supply device 321 ... Secondary battery 32 ... Charging unit 323 ... Frequency information acquisition unit 324 ... Inverter unit 325 ... Socket unit 330 ... Connector 331 ... Frequency specifying unit 332 ... Frequency storage unit 333 ... Frequency information output unit 410 ... Converter device 420 ... Power supply device 421 ... Secondary battery 422 ... Charging unit 423 ... Regional information storage unit 424 ... Regional information acquisition unit 425 ... Frequency determination unit 426 ... Inverter unit 427 ... Socket unit

Claims (9)

A charging unit that charges a secondary battery with DC power converted from AC power by an external converter device; and
A frequency information acquisition unit that externally acquires frequency information that is information related to the frequency at which power is to be output;
An inverter unit that converts output power of the secondary battery into AC power having a frequency determined from the frequency information. The frequency information acquisition unit acquires an AC signal included in DC power converted from AC power by the converter device as the frequency information,
The power supply device according to claim 1, wherein the inverter unit converts the output power of the secondary battery into AC power having the same frequency as the frequency of the AC signal acquired by the frequency information acquisition unit. The frequency of the electric power converted by the inverter unit is either the first frequency or the second frequency,
A reproducing unit for reproducing the alternating-current signal having the first frequency;
A synthesizing unit that synthesizes the AC signal acquired by the frequency information acquiring unit and the AC signal reproduced by the reproducing unit;
With
The inverter unit converts the output power of the secondary battery into AC power of the first frequency when the peak value of the signal output from the combining unit is constant, and the signal output from the combining unit The power supply device according to claim 2, wherein when the peak value is not constant, the output power of the secondary battery is converted into AC power of the second frequency. For each frequency at which power is to be output, an AC power output end converted by the inverter unit, and a socket unit into which a plug extending from a power supply target is inserted,
A corresponding socket storage unit that associates the socket unit with a frequency, and
The frequency information acquisition unit acquires information indicating which socket unit the plug is inserted into as the frequency information,
The said inverter part converts the output electric power of the said secondary battery into the alternating current power of the frequency memorize | stored in the said corresponding | compatible socket memory | storage part in association with the socket part in which the said plug was inserted. The power supply described. A power supply system comprising the power supply device according to claim 1 and a converter device,
The converter device is
A converter for converting AC power supplied from an external power source into DC power;
A frequency specifying unit that specifies the frequency of the AC power supplied from the external power source;
A frequency information output unit that outputs frequency information indicating the frequency specified by the frequency specifying unit to the power supply device;
The frequency information acquisition unit of the power supply device acquires the frequency information output from the converter device,
The inverter unit of the power supply device converts the output power of the secondary battery into AC power having a frequency indicated by the frequency information. An area information storage unit that stores the frequency of power and the area to which power of the frequency is to be supplied in association with each other,
The frequency information acquisition unit acquires information on a region where the device is present as the frequency information, identifies the frequency stored in the region information storage unit in association with the region,
The power supply device according to claim 1, wherein the inverter unit converts the output power of the secondary battery into AC power having a frequency specified by the frequency information acquisition unit. A power supply system comprising the power supply device according to claim 1 and a connector that connects the power supply device and a power supply target.
The connector is
A frequency information output unit that outputs frequency information indicating a frequency for requesting output from the power supply device to the power supply device;
The frequency information acquisition unit of the power supply apparatus acquires the frequency information output from the connector,
The inverter unit of the power supply device converts the output power of the secondary battery into AC power having a frequency indicated by the frequency information and outputs the AC power to the power supply target through the connector. The connector includes a frequency specifying unit that specifies a frequency of AC power supplied from the external power supply when the power supply target and an external power supply are connected.
The power supply system according to claim 7, wherein the frequency information output unit of the connector outputs frequency information indicating the frequency specified by the frequency specifying unit to the power supply device. A method of charging and discharging a power supply device,
The charging unit of the power supply device charges the secondary battery with DC power converted from AC power by an external converter device; and
The frequency information acquisition unit of the power supply apparatus acquires the frequency information that is information related to the frequency of the power to be output from the power supply apparatus from the outside,
The inverter part of the said power supply device is provided with the step of converting the output electric power of the said secondary battery into the alternating current power of the frequency discriminated from the said frequency information. The charging / discharging method characterized by these.

Images