WO2013111802A1

WO2013111802A1 - Power supply device, power supply device control method, and program

Info

Publication number: WO2013111802A1
Application number: PCT/JP2013/051396
Authority: WO
Inventors: 清源河上; 智裕山田; 英樹森岡; 良孝大内
Original assignee: エリーパワー株式会社
Priority date: 2012-01-27
Filing date: 2013-01-24
Publication date: 2013-08-01
Also published as: TWI554003B; TW201334368A; JP6167350B2; JP2013158108A

Abstract

Provided are a power supply device, a power supply device control method, and a program, with which the amount of power consumed by a power supply device is reduced effectively and with which the ease of use is improved for the user. A setting is made regarding whether to use an automatic mode, wherein the supply of power to the load is switched automatically from externally input power to the output from an inverter, or to use a standby mode, wherein the switch to inverter output is not executed, when there is a fault with the externally input power. When a fault with the externally input power is detected and the automatic mode has been set, the supply of power to the load is switched to the inverter output. When a fault with the externally input power is detected and the standby mode has been set, a state ensues wherein a selection can be made regarding whether to switch the supply of power to the load from the externally input power to the inverter output. Then, when switching to the inverter output is selected, the supply of power to the load is switched to the inverter output.

Description

Power supply, control method for power supply, and program

The present invention relates to a power supply device, a control method for the power supply device, and a program, and in particular, a power supply device that efficiently reduces power consumed by the power supply device and improves usability for a user, a control method for the power supply device, and Regarding the program.

In recent years, as represented by management using the intranet, Internet transactions, etc., the range of utilization of personal computers has been expanding. Such a situation is not only used in enterprises, but nowadays personal computers have permeated into the life of each household, along with household appliances such as televisions, refrigerators, and microwave ovens, which are electrical devices. As described above, there is a concern that important information may be lost due to a power failure during work using the personal computer as the personal computer is widely used at home. Thus, as a countermeasure against such a power failure, a power supply device that switches power supply from a commercial power source to a storage battery when a power failure occurs is known (see, for example, Patent Documents 1 to 3). ).

Japanese Patent Laid-Open No. 03-045135 Japanese Patent Laid-Open No. 2007-202241 JP 2002-281893 A

However, the above-described conventional technology automatically supplies power from the storage battery to the load via the inverter when a power failure occurs while supplying commercial power directly to the load.

On the other hand, in recent years, the use of power supply devices has increased, and not only is it intended to supply power during a power outage, but also stores nighttime power to reduce the amount of electricity and save electricity. However, there are an increasing number of cases aimed at a peak shift that discharges electric power from the storage battery. In particular, when used in this way, there has been a demand for efforts not to waste the amount of power stored in the storage battery so that it can be used as an emergency power source. For example, in the techniques described in Patent Documents 1 and 2 described above, based on the detection of a power failure, the inverter that is stopped is operated to avoid operating the inverter constantly, and the power consumed by the inverter is reduced. Is.

However, in the technique described in Patent Document 1, if a power failure is detected and the load is being driven (load current is flowing), the inverter is operated and the power supply source to the load is a commercial power source. Because it automatically switches from a battery to a storage battery, an electric device (for example, an optical medium such as a DVD (Digital Versatile Disc) or a magnetic medium such as an HDD (Hard Disk Drive)) that does not necessarily require power supply in the event of a power failure Even if the video decoder is used as a load, load current is generated for display on the monitor in the standby state, so the inverter is driven to supply power As a result, the power of the storage battery may be consumed in vain. In addition, if the load was not driven at the time of a power failure, it was only repeated confirmation of recovery from the time of power failure to recovery detection, and if you wanted to drive the load during the power failure, power was supplied from the storage battery. I can't do it.

In the technique described in Patent Document 2, an inverter is operated in response to detection of a power failure, and the power supply source to the load is automatically switched from a commercial power source to a storage battery. Even when an electrical device that does not necessarily require power supply is connected as a load, the inverter is driven to supply power, and therefore, similarly to Patent Document 1, the power of the storage battery may be consumed wastefully. .

In addition, since the technique described in Patent Document 3 is intended for uninterruptible loads, the inverter is always in a standby state, and in the event of a power failure, it is automatically switched to power supply from the storage battery, and thus consumed by the inverter. The power cannot be reduced efficiently.

As described above, all of the conventional techniques described in Patent Documents 1 to 3 have a problem that the power consumed by the power supply device cannot be sufficiently reduced. In addition, the conventional techniques described in Patent Documents 1 to 3 have no degree of freedom for whether or not to supply power from the storage battery to the load when a power failure occurs, and are not always convenient for the user. There was a problem.

Accordingly, the present invention has been made in view of the above-described problems, and efficiently reduces the power consumed by the power supply device, and improves the user-friendliness, the control method for the power supply device, and The purpose is to provide a program.

The present invention proposes the following items in order to solve the above problems. In addition, in order to make an understanding easy, although the code | symbol corresponding to embodiment of this invention is attached | subjected and demonstrated, it is not limited to this.

(1) The present invention outputs a storage battery (for example, equivalent to the storage battery 130 in FIG. 1), an input unit for receiving power from the outside (for example, equivalent to the input unit 30 in FIG. 1), and the power supplied to the load. Output unit (for example, equivalent to the output unit 40 in FIG. 1), an inverter (for example, equivalent to the inverter 140 in FIG. 1) that converts electric power from the storage battery so as to be supplied to a load, and the input unit side are selected. The first state that is selected and the second state in which the output side from the inverter is selected are selectable, and selection means (for example, in FIG. 1) sends power from the selected side to the output unit. Switch 120), monitoring means for monitoring the power received by the input section and detecting an abnormality in the power received by the input section (for example, corresponding to the power failure monitoring section 150 in FIG. 1), and the monitoring means being abnormal Is detected, An automatic mode for automatically switching the selection means from the first state to the second state, and a state in which the state of the selection means can be switched by an external instruction when the monitoring means detects an abnormality. Instructing means (e.g., corresponding to the instruction unit 180 in FIG. 1) capable of instructing a standby mode for waiting, and when the automatic mode is instructed by the instructing means, the selection is performed according to an abnormality detection of the monitoring means Control is performed to automatically switch the means from the first state to the second state, and when the standby mode is instructed by the instructing means, the state of the selecting means is detected in accordance with the abnormality detection of the monitoring means A power supply device comprising: control means (for example, corresponding to the control unit 160 in FIG. 1) that performs control to wait in a state that can be switched by an external instruction. It is draft.

According to the present invention, when an abnormality in the input power is detected, it is possible to select whether to automatically switch the output side of the inverter or to enter a standby state. It is possible to arbitrarily set whether or not to supply power to the load, and it is possible to cope with power saving according to usage.

(2) In the power supply device according to (1), when the monitoring unit detects an abnormality in input power from the outside, the control unit detects the abnormality in the automatic mode. In response, the inverter is energized, and in the standby mode, when the instruction means instructs the switching of the selection means from the first state to the second state, A power supply device characterized by energization is proposed.

According to the present invention, even in the standby mode, the inverter is energized by an instruction to switch the power supply to the load from the external input power to the power output from the inverter. Accordingly, it is possible to arbitrarily select whether or not to supply power to the load during a power failure.

(3) According to the present invention, in the power supply device according to (1) or (2), the instruction unit is provided in a display unit (for example, the display unit 170 in FIG. 1). A device is proposed.

According to the present invention, since the instruction means is provided in the display means, it is possible to instruct the mode selection from the screen in accordance with the mode selection screen on the display means, which improves usability for the user. .

(4) The present invention proposes a power supply apparatus according to (3), wherein the display means includes a display area for displaying a mode instructed by the instruction means.

According to the present invention, since the display means includes a display area for displaying the designated mode, the designated mode can be recognized accurately, so that an erroneous operation can be prevented and user convenience can be improved.

(5) The present invention is a method for controlling a power supply device, wherein when an inverter is stopped and when an abnormality in input power from the outside is detected, power supply to a load is transferred from the input power from the outside to the output side of the inverter A first step (for example, corresponding to step S113 in FIG. 3) for setting whether to automatically switch to automatic mode or to switch to standby mode without switching to the output side of the inverter, and external input The second step of detecting an abnormality in power (for example, corresponding to step S114 in FIG. 3), and when detecting an abnormality in input power from the outside and the automatic mode is set, A third step (for example, equivalent to step S105 in FIG. 4) for switching the power supply to the output side of the inverter, an abnormality in input power from the outside is detected, and a standby mode is indicated A fourth step (for example, step S117 in FIG. 3) that waits in a state in which it is possible to select whether or not to switch the power supply to the load from the external input power side to the inverter output side. And a fifth step (for example, corresponding to step S105 in FIG. 4) for switching the power supply to the load to the output side of the inverter when switching to the output side of the inverter is selected. A control method for a power supply device is proposed.

According to the present invention, when an abnormality in input power from the outside is detected when the inverter is stopped, the inverter automatically switches to the output side of the inverter or enters the standby state without switching to the output side of the inverter. Since it can be selected, whether or not to supply power to the load at the time of a power failure can be arbitrarily selected according to the connected load, and power saving corresponding to the usage can be made.

(6) The present invention is a method for controlling a power supply apparatus, wherein the inverter is energized when switching to the output side of the inverter in the fifth step (for example, corresponding to step S130 in FIG. 3). The control method of the power supply device is proposed.

According to the present invention, since the power supply to the load is switched to the output side of the inverter, the power supply to the inverter is performed. Therefore, the power supply to the inverter can be efficiently suppressed, and thus power saving can be supported.

(7) The present invention is a program for causing a computer to execute a control method of a power supply device, and when an inverter is stopped and an abnormality in input power from the outside is detected, power supply to a load is input from the outside A first step (for example, step S113 in FIG. 3) is set in which an automatic mode for automatically switching from the power side to the output side of the inverter or a standby mode without switching to the output side of the inverter is set. And a second step (for example, corresponding to step S114 in FIG. 3) for detecting an abnormality in the input power from the outside, and detecting an abnormality in the input power from the outside, and being set to the automatic mode. The third step of switching the power supply to the load to the output side of the inverter (for example, corresponding to step S105 in FIG. 4) and the input power from the outside When the abnormality is detected and the standby mode is set, the standby state is made in a state where it is possible to select whether to switch the power supply to the load from the input power from the outside to the output side of the inverter. Step (for example, equivalent to steps S117 and S118 in FIG. 3) and a fifth step (for example, FIG. 4) for switching the power supply to the load to the output side of the inverter when switching to the output side of the inverter is selected. The program for causing a computer to execute the program is proposed.

According to this invention, when an abnormality is detected when the inverter is stopped, it is possible to select whether to automatically switch to the output side of the inverter or to enter a standby state without switching to the output side of the inverter. Therefore, according to the load to be connected, it is possible to arbitrarily select whether or not to supply power to the load at the time of a power failure, and it is possible to save power according to the intended use.

(8) The present invention is a program for causing a computer to execute a control method of a power supply apparatus, and a sixth step (for example, energization of the inverter is performed when the inverter is switched to the output side in the fifth step) , Corresponding to step S130 of FIG. 3) is proposed.

According to the present invention, the normal mode in which the inverter is driven and the power saving mode in which the inverter is stopped can be selected, and when an abnormality is detected in the power saving mode, the inverter is operated as in the normal mode. It is now possible to select whether to automatically switch to the output side or to enter the standby state, so that it is possible to arbitrarily select whether or not to supply power to the load during a power failure, depending on the connected load. There is an effect that it is possible to cope with power saving according to the application.

In particular, while charging the storage battery at night when electricity costs are low, the power from the commercial power source is supplied to the load, and the power from the storage battery is supplied to the load during the day. In addition, even when there is an abnormality in the commercial power supply at night, the power supply from the storage battery to the load can be suppressed as necessary, and the use of the power of the storage battery can be suppressed. As a result, unnecessary consumption of the electric power stored in the storage battery of the power supply device can be suppressed, and there is an effect that it can be expected that the power usage time in an emergency will be extended.

In addition, when the power supply device of the present invention and the solar power generation device are combined, it is possible to further suppress the use of power from the daytime storage battery.

It is a figure which shows the structure of the power supply device which concerns on embodiment of this invention. It is a figure which shows the structure of the control part in the power supply device which concerns on embodiment of this invention. It is a flowchart figure which shows the process of the power supply device which concerns on embodiment of this invention. It is a flowchart figure which shows the process of the power supply device which concerns on embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
Note that the constituent elements in the present embodiment can be appropriately replaced with existing constituent elements and the like, and various variations including combinations with other existing constituent elements are possible. Therefore, the description of the present embodiment does not limit the contents of the invention described in the claims.

Hereinafter, a power supply device according to an embodiment of the present invention will be described with reference to FIGS. 1 to 4.

<Configuration of power supply>
The configuration of the power supply device according to this embodiment will be described with reference to FIG.
As shown in FIG. 1, the power supply device 100 according to the present embodiment includes an input unit 30, an output unit 40, a charging unit 110, a switch 120, a storage battery 130, an inverter 140, a power failure monitoring unit 150, It comprises a control unit 160, a display unit 170, and an instruction unit 180. A commercial power supply 10 is connected to the input unit 30, and a load 20 is connected to the output unit 40.

The charging unit 110 is connected to the input unit 30 of the power supply apparatus 100. When the commercial power source 10 is connected to the input unit 30, the charging unit 110 converts the AC power input to the input unit 30 into DC power and outputs the DC power. The switch 120 has one input connected to the input unit 30, the other input connected to the inverter 140, and the output connected to the output unit 40. Based on the control signal from the control unit 160, the switch 120 has a first state where the connection of the load 20 is connected to the commercial power supply 10 side and a second state where the connection is connected to the output side of the inverter 140. Switch to one. Storage battery 130 is connected to charging unit 110 and charged based on DC power from charging unit 110.

The inverter 140 converts the DC power output by the discharge of the storage battery 130 into AC power that can be supplied to the load, and supplies the AC power to the other input of the switch 120. The power failure monitoring unit 150 is an abnormality monitoring unit that monitors the voltage of the input power and detects an abnormality from the voltage value, and detects a power failure when the input power is reduced. The control unit 160 performs control based on the monitoring result of the power failure monitoring unit 150, charge or discharge control of the storage battery 130, remaining amount confirmation (SOC), switching control of the switch 120, operation control of the inverter 140, and the like. The display unit 170 is connected to the control unit 160 and displays information on the screen. The display unit 170 also has a function as an instruction unit 180 that can input an instruction from the outside such as a user such as a touch panel.

<Configuration of control unit>
The configuration of the control unit 160 in the power supply device 100 according to the present embodiment will be described with reference to FIG.
As shown in FIG. 2, the control unit 160 according to the present embodiment includes a CPU 161, a storage battery monitoring unit 162, a display control unit 164, an instruction information recognition unit 165, and a storage unit 166.

The CPU 161 drives and controls the charging unit 110 for charging the storage battery 130 and controls the operation of each component constituting the control unit 160. The storage battery monitoring unit 162 acquires information such as cell voltage in order to monitor the charge / discharge state of the storage battery 130 and to estimate the remaining charge (SOC) of the storage battery 130. The display control unit 164 generates an SOC value (remaining charge value of the storage battery 130) to be displayed on the display unit 170, data for displaying the current mode, and the like in accordance with instructions and information sent from the CPU 161. Display control such as sending to the display unit 170 is performed.

The instruction information recognizing unit 165 recognizes information input and instructed by the user using the display unit 170 that also has a function as the instruction unit 180 capable of inputting a mode selection instruction and the like, and according to the recognition result A signal is generated and sent to the CPU 161. The storage unit 166 is connected to the CPU 161 and holds the current mode and SOC value as data.

<Power supply processing>
Processing of the power supply device according to the present embodiment will be described with reference to FIGS. 3 and 4. In FIG. 3, a screen for selecting mode switching is displayed on display unit 170 in conjunction with a request for mode switching by the user after power source device 100 is turned on or when power is turned on. Suppose that Since the display unit 170 in the present embodiment is a touch panel that also serves as the instruction unit 180, for example, on the screen for selecting the mode switching of the display unit 170, the user may select a desired mode. By touching and selecting the part displaying the mode, information (data) indicating the mode instructed to select is generated, and the generated information (data) is sent to the instruction information recognition unit 165.

The power supply apparatus 100 displays a mode selection screen for causing the display unit 170 to function as the instruction unit 180, and stands by in a state of prompting the user to select a mode (step S101). Until the mode switching is instructed, the mode set before power-on is maintained. The mode here refers to a normal mode and a power saving mode. In the present embodiment, the normal mode is a state in which the inverter 140 is in a driving state and the switch 120 is set to the commercial power supply 10 side. In the normal mode, when an abnormality of the commercial power source 10 such as a power failure is detected, the switch 120 is automatically switched to the inverter 140 side, so that the power supply to the load 20 is changed from the state based on the commercial power source 10 to the storage battery 130. Based on the state. On the other hand, the power saving mode is a state in which the inverter 140 is stopped by turning off the power to the inverter 140 and the switch 120 is set to the commercial power supply 10 side. In the power saving mode, when an abnormality of the commercial power supply 10 such as a power failure is detected, whether the switch 120 is automatically switched to the inverter 140 side, or is set to a standby state without automatic switching, a setting state Depending on the operation, the operation will be different. Details will be described later. In the initial state, it is assumed that the commercial power supply 10 side is selected and the AC power from the commercial power supply 10 is directly supplied to the load 20. When displaying the mode selection screen, the mode immediately before the mode selection screen is displayed is not maintained, but is set to be in a predetermined mode state, and the switch 120 is set to a state corresponding to the mode. It may be set.

The user selects the normal mode or the power saving mode via the display unit 170 (step S102). The user instruction is sent to the CPU 161 via the instruction information recognition unit 165, and control according to the mode selected by the CPU 161 is performed.

When the normal mode is selected, the following operation is performed (step S103). First, the CPU 161 is energized with respect to the inverter 140 in a state where the energization is cut off, and the inverter 140 is driven. Further, the CPU 161 sets the switch 120 to the commercial power supply 10 side. The load 20 is supplied with AC power from the commercial power supply 10 via the switch 120.

Further, the storage unit 166 stores information indicating that the normal mode is in a predetermined storage area in a readable manner. Based on the stored information, the display unit 170 displays the normal mode on the display unit 170 so that the user can check the current mode.

Thereafter, the power failure monitoring unit 150 monitors whether or not the voltage of the electric power from the commercial power supply 10 has decreased to a predetermined threshold value or less (step S104). In this embodiment, whether or not there is a power failure is monitored and confirmed based on whether or not the voltage level of the commercial power supply 10 has become a predetermined threshold value or less. However, the present invention is not limited to this, and power failure monitoring is performed by other methods. It may be. Further, the present invention is not limited to application to the present invention as long as it detects an abnormality of the commercial power source 10 such as monitoring the stable state of the power supplied from the commercial power source 10 without being limited to a power failure.

If no abnormality is detected in the commercial power supply 10 by monitoring by the power failure monitoring unit 150, the CPU 161 confirms whether the user has arbitrarily instructed mode switching (step S109). This confirmation is performed by comparing the current mode information stored in the storage unit 166 with the mode instruction information supplied from the user via the display unit 170 and the display control unit 164 in the CPU 161. Done. When there is an instruction to switch to a mode different from the current mode, the control unit 160 controls the switch 120 to perform a switching process in accordance with the instruction (step S110).

On the other hand, when there is no mode switching instruction or when the instruction information is the same as the current mode information (the mode is not changed), the CPU 161 does not issue a mode switching instruction and returns to step S104 to return to the commercial power supply 10 Anomaly detection is performed.

When the abnormality of the commercial power supply 10 is detected by monitoring by the power failure monitoring unit 150, the CPU 161 switches the switch 120 to the inverter 140 side (step S105). Further, an alarm or the like for notifying the abnormality of the commercial power supply 10 is generated. For example, in addition to a warning by voice, the occurrence of abnormality is displayed on the display unit 170 (step S106). The load 20 is immediately supplied with power from the storage battery 130 switched from the commercial power supply 10 via the inverter 140.

The CPU 161 confirms with the CPU 161 whether or not the SOC has decreased (for example, below the lower limit of discharge for determining that discharge is possible) (step S107). When a decrease in the SOC is detected, in order to avoid deterioration of the battery performance of the storage battery 130 due to overdischarge, the discharge from the storage battery 130 is stopped, and the CPU 161 executes a shutdown process of the power supply apparatus 100, and the power supply apparatus 100 is shut down (step S108).

On the other hand, if a decrease in SOC is not detected, it is confirmed by the CPU 161 whether or not the user has arbitrarily instructed mode switching (step S111). This confirmation is performed by the CPU 161 comparing the current mode information stored in the storage unit 166 with the mode instruction information supplied from the user via the display unit 170 and the display control unit 164. Is called.

When there is an instruction to switch to a mode different from the current mode, the CPU 161 confirms that the switching instruction has been made because the current mode information is different from the mode information instructed by the user. Then, the CPU 161 controls the switch 120 so as to perform the switching process according to the instruction from the user (step S112). On the other hand, when there is no mode switching instruction or when the instruction information and the current mode information are the same (the mode is not changed), the CPU 161 indicates the mode information instructed by the user to be compared with the current mode information. The CPU 161 confirms that there is no switching instruction because the user has not input the information, and the user has instructed the same mode information as the current mode information, and returns to step S107 without performing the mode switching process. Then, it is confirmed whether or not the SOC has decreased.

When the power saving mode is selected, the following operation is performed (step S113). First, the power supply to the inverter 140 is cut off, the operation of the inverter 140 is stopped, and the inverter 140 is invalidated. Further, the switch 120 is set to the commercial power supply 10 side. Thereby, the AC power supplied by the commercial power supply 10 is supplied to the load 20 via the input unit 30, the switch 120, and the output unit 40 while reducing the power consumed by the inverter 140 (including standby power).

Also, a selection screen for selecting whether to automatically switch from the commercial power supply 10 side to the inverter 140 side when an abnormality is detected in the commercial power supply 10 is also displayed. When an abnormality is detected, the automatic / manual (standby) switching setting from the output on the commercial power supply 10 side to the output on the inverter 140 side is performed. When the user instructs to select either automatic switching or manual switching in the standby state from the selection screen displayed on the display unit 170 functioning as the instruction unit 180, the selected information is transmitted via the instruction information recognition unit 165 and the CPU 161. And stored in the storage unit 166. When it is determined that there is no selection instruction from the user even after a predetermined time, for example, it is considered that automatic switching has been selected so that power is supplied to the load 20 just in case of a power failure or the like. Shall.

In addition, as will be described later, when switching from the commercial power supply 10 side to the inverter 140 side, the inverter 140 is also energized to be in a driving state, so that the same state as when the switch 120 is switched to the inverter 140 side in the normal mode. Become. For this reason, switching the switch 120 to the output on the inverter 140 side in the power saving mode may be referred to as “returning to the normal mode”. In particular, when the user manually selects switching to the output side of the inverter 140, the user can easily recognize that “return to normal mode” is displayed on the selection screen as switching to the inverter 140 side. Therefore, it is not hindered to change the expression of the operating state without departing from the spirit of the invention.

Further, the storage unit 166 stores information indicating that the power saving mode is in a predetermined storage area in a readable manner, and stores information on whether or not to automatically switch to the normal mode when an abnormality is detected. Based on the stored information, a display indicating the power saving mode is performed on the display unit 170 via the CPU 161 and the display control unit 164 so that the user can check the current mode. At this time, the setting status of whether the switching to the output on the inverter 140 side is manual (or standby) or automatic when an abnormality is detected may be displayed.

Thereafter, the power failure monitoring unit 150 monitors whether or not the voltage of the input power from the commercial power supply 10 has decreased to a predetermined threshold value or less (step S114).

If no abnormality of the commercial power supply 10 is detected by monitoring by the power failure monitoring unit 150, the CPU 161 confirms whether the user has arbitrarily instructed mode switching (step S123). The CPU 161 compares the current mode information stored in the storage unit 166 with the mode instruction information supplied from the user via the display unit 170 and the display control unit 164.

When there is an instruction to switch to a mode different from the current mode, the CPU 161 confirms that the switching instruction has been issued because the current mode information and the mode information instructed by the user are different, and the CPU 161. Controls the switch 120 to perform a switching process in accordance with an instruction from the user (step S124). On the other hand, when there is no mode switching instruction or when the instruction information and the current mode information are the same (the mode is not changed), the CPU 161 indicates the mode information instructed by the user to be compared with the current mode information. The CPU 161 confirms that there is no switching instruction because the user has not input any information or that the same mode information as the current mode information is instructed by the user, and returns to step S114 without performing the mode switching process. An abnormality of the commercial power supply 10 is detected.

Next, when the abnormality of the commercial power supply 10 is detected by monitoring by the power failure monitoring unit 150, the CPU 161 reads the information stored in the storage unit 166, and the switching from the commercial power supply 10 side to the output side of the inverter 140 is automatic. Whether to wait (step S115).

When it is confirmed by the CPU 161 that automatic switching is performed based on the information stored in the storage unit 166, the CPU 161 controls the inverter 140 to energize and drives the inverter 140 (step S130). Thereafter, the process proceeds to step S105, and the switch 120 is switched to the inverter 140 side. Thereby, the power from the storage battery 130 is supplied to the load 20 via the inverter 140. The subsequent steps are the same as the steps shown in steps S106 to S108, S111, and S112. That is, when the process proceeds to step S105, the power supply apparatus 100 is in the same state as when the normal mode is entered.

On the other hand, when it is confirmed that the CPU 161 is on standby based on the information stored in the storage unit 166, the CPU 161 generates an alarm for notifying the abnormality of the commercial power supply 10 (step S116). At this time, the setting state of the switch 120 is maintained as it is on the commercial power supply 10 side, and energization to the inverter 140 is also cut off.

The CPU 161 displays a selection screen for selecting whether or not to supply the output from the inverter 140 to the load 20 on the display unit 170 via the display control unit 164 (step S117). The CPU 161 determines whether or not the user has selected switching to the output side of the inverter 140 based on information input via the display unit 170 (instruction unit 180) configured with a touch panel (step S118).

When the CPU 161 determines that switching to the output side of the inverter 140 has been selected, the process proceeds to step S130 and the inverter 140 is energized and driven. The subsequent steps are the same as those after step S105 in the normal mode. Then, when the process proceeds to step S105, the power supply apparatus 100 is in the same state as when it has shifted to the normal mode.

The CPU 161 determines whether the elapsed time when the switching to the output side of the inverter 140 is not selected has reached a predetermined value, that is, whether the predetermined time has elapsed in the standby state, or whether the SOC has decreased ( For example, it is monitored whether or not the discharge lower limit value is determined to be dischargeable (step S119). When it is determined that a predetermined time has elapsed or when a decrease in the SOC is detected, the CPU 161 executes a shutdown process of the power supply apparatus 100 (step S120).

If the predetermined time has not elapsed and no decrease in SOC has been detected, the CPU 161 confirms whether or not the user has arbitrarily instructed mode switching (step S121). This confirmation is performed by the CPU 161 comparing the current mode information stored in the storage unit 166 with the user mode instruction information supplied via the display unit 170 and the display control unit 164.

When there is an instruction to switch to a mode different from the current mode, the CPU 161 confirms that the switching instruction has been issued because the current mode information and the mode information instructed by the user are different, and the CPU 161. Controls the switch 120 to perform a switching process in accordance with an instruction from the user (step S122). On the other hand, when there is no mode switching instruction or when the instruction information and the current mode information are the same (the mode is not changed), the process returns to step S119 to monitor the elapsed time in the standby state and the decrease in the SOC. Do.

As described above, according to the present embodiment, the normal mode and the power saving mode can be selected, and when an abnormality is detected in the power saving mode, as in the normal mode, to the output side of the inverter. Since it is possible to select whether to automatically switch to standby mode, it is possible to arbitrarily set whether or not to supply power to the load during a power failure according to the connected load. It becomes possible to save electricity according to the situation.

The processing of the power supply apparatus 100 is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read by the CPU in the power supply apparatus 100 and executed, thereby realizing the power supply apparatus of the present invention. can do. The computer system here includes an OS and hardware such as peripheral devices.

In addition, the “computer system” includes a homepage providing environment (or display environment) if a WWW (World Wide Web) system is used. The program may be transmitted from a computer system storing the program 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 the 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 program may be for realizing a part of the above-described functions. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, and what is called a difference file (difference program) may be sufficient.

As described above, the embodiments of the present invention have been described in detail with reference to the drawings. However, the specific configuration is not limited to the embodiments, and includes designs and the like that do not depart from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10: Commercial power supply 20: Load 30: Input part 40: Output part 100: Power supply device 110: Charging part 120: Switch 130: Storage battery 140: Inverter 150: Power failure monitoring part 160: Control part 161: CPU
162: Storage battery monitoring unit 164: Display control unit 165: Instruction information recognition unit 166: Storage unit 170: Display unit 180: Instruction unit

Claims

A storage battery,
An input unit that receives power from the outside,
An output unit for outputting power supplied to the load;
An inverter that converts electric power from the storage battery to be able to be supplied to a load;
A selection unit that can select a first state in which the input unit side is selected and a second state in which the output side from the inverter is selected, and sends power from the selected side to the output unit When,
Monitoring means for monitoring the power received by the input unit and detecting an abnormality of the power received by the input unit;
An automatic mode for automatically switching the selection means from the first state to the second state when the monitoring means detects an abnormality; and when the monitoring means detects an abnormality, An instruction means capable of instructing a standby mode for waiting in a state where the state can be switched by an instruction from the outside;
When the automatic mode is instructed by the instruction means, control is performed to automatically switch the selection means from the first state to the second state in response to an abnormality detection of the monitoring means, and the instruction means When the standby mode is instructed by the control means, the control means for performing control to wait in a state in which the state of the selection means can be switched by an instruction from the outside according to the abnormality detection of the monitoring means,
A power supply device comprising:
When the monitoring unit detects an abnormality in input power from the outside, the control unit energizes the inverter in response to the detection of the abnormality in the automatic mode, and in the standby mode. 2. The power supply according to claim 1, wherein the inverter is energized when an instruction to switch the selection unit from the first state to the second state is made by the instruction unit. apparatus.
3. The power supply device according to claim 1, wherein the instruction means is provided in a display means.
4. The power supply device according to claim 3, wherein the display unit includes a display area for displaying a mode instructed by the instruction unit.
A method of controlling a power supply device,
When the inverter stops,
When an abnormality is detected in the input power from the outside, the power supply to the load is automatically switched from the input power side from the outside to the output side of the inverter, or it is on standby without switching to the output side of the inverter A first step of setting whether to enter a mode;
A second step of detecting an abnormality in input power from the outside;
A third step of detecting an abnormality in input power from the outside and switching the power supply to the load to the output side of the inverter when the automatic mode is set;
It is possible to select whether to switch the power supply to the load from the external input power side to the inverter output side when the external input power abnormality is detected and the standby mode is instructed A fourth step of waiting in a state;
A fifth step of switching the power supply to the load to the output side of the inverter when switching to the output side of the inverter is selected;
A method for controlling a power supply apparatus comprising:
In the control method of the power unit according to claim 5,
The method for controlling a power supply apparatus, wherein the inverter is energized when the inverter is switched to the output side in the fifth step.
A program for causing a computer to control the power supply device,
When the inverter stops and when an abnormality is detected in the input power from the outside, it is possible to use the automatic mode that automatically switches the power supply to the load from the external input power side to the inverter output side, or to the inverter output side. A first step for setting whether to enter standby mode without switching;
A second step of detecting an abnormality in input power from the outside;
A third step of detecting an abnormality in input power from the outside and switching the power supply to the load to the output side of the inverter when the automatic mode is set;
Possible to select whether or not to switch the power supply to the load from the external input power to the inverter output side when the external input power abnormality is detected and the standby mode is set A fourth step waiting at
A fifth step of switching the power supply to the load to the output side of the inverter when switching to the output side of the inverter is selected;
A program that causes a computer to execute.
The program according to claim 7, wherein
A sixth step in which power is supplied to the inverter when the inverter is switched to the output side in the fifth step;
A program that causes a computer to execute.