TW201334368A - Power supply device, power supply device control method, and program - Google Patents

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 device, power supply device control method and program

The present invention relates to a power supply device, a control method and a program for a power supply device, and more particularly to a power supply device, a power supply device control method, and a program that can effectively reduce the power consumed by the power supply device and can be used in accordance with the user's usage habits. .

In recent years, personal computers such as those used for internal network management or online transactions have become more and more widely used. In the above-mentioned situation, not only does it end up in the enterprise, but in today's family life, personal computers have also expanded into home appliances such as televisions, refrigerators, and microwave ovens. As a result, with the widespread use of personal computers in the home, the use of personal computers may result in the loss of important signals due to power outages. Then, as a countermeasure against the power failure, a power supply device capable of switching power supply to a load such as an electric appliance from a commercial power source to a battery when a power failure occurs is known.

[Previous Technical Literature]

[Patent Literature]

Patent Document 1: Japanese Laid-Open Patent Publication No. Hei 03-045135.

Patent Document 2: Japanese Patent Laid-Open No. 2007-202241.

Patent Document 3: Japanese Patent Laid-Open Publication No. 2002-281693.

However, in the prior art, when the commercial power source is directly supplied to the load, when the power failure occurs, the power from the battery is automatically supplied to the load via the inverter.

On the other hand, in recent years, the use of the power supply device has increased, not only for the purpose of power supply during a power outage, for example, to reduce power consumption or power saving, to store nighttime power, and to release power from the battery during the day to peak shift. The case of the peak shift is increased for the purpose. In particular, in the case of the aforementioned application, in order to be able to be used as an emergency power source, a structure that does not waste the amount of stored electricity in the battery is required. For example, in the techniques described in Patent Documents 1 and 2, based on the power failure detection, the inverter is stopped by the stop to prevent the inverter from being activated at any time to reduce the power consumed by the inverter.

However, in the technique described in Patent Document 1, when the power failure is detected and the load is being driven (the state in which the load current flows), the inverter is activated, and the power supply source for the load is automatically switched from the commercial power source to the battery. Therefore, an electric appliance that is not required to supply electric power during a power failure (for example, a video decoder for recording, such as an optical medium such as a DVD (Digital Versatile Disc) or a magnetic medium such as an HDD (Hard Disk Drive), or a microwave oven is connected as a load. In the case of the case, the load current is generated for the screen display in the standby state, and the inverter is driven to supply power, so that the battery power may be wasted. In the case of a power failure, when the load is not driven, it is only necessary to repeatedly confirm whether or not the power has been restored from the power failure to the detection of the power supply recovery. However, the power supply from the battery cannot be performed when the load is to be driven during the power failure.

Further, in the technique described in Patent Document 2, the inverter is activated in response to the detection of the power failure, and the power supply source for the load is automatically switched from the commercial power source to the storage battery, and the load is connected to the unnecessary power supply during the power failure. In the case of an electric appliance, the inverter is driven to supply electric power. Therefore, as in Patent Document 1, the battery power may be wasted.

Further, in the technique described in Patent Document 3, the inverter is in a standby state at any time as a target of no power failure load, and the power supply from the battery is automatically cut when the power is turned off. It is not possible to effectively reduce the power consumption of the inverter.

As described above, the conventional techniques described in Patent Document 1 to Patent Document 3 cannot fully solve the problem of reducing the power consumption of the power supply device. Further, in the conventional techniques described in Patent Documents 1 to 3, when the power failure occurs, there is no freedom in selecting whether or not the load is supplied from the battery, which is not necessarily appropriate for the user's habit, and thus causes a problem. .

Accordingly, the present invention has been made in view of the above problems, and an object of the present invention is to provide a power supply device, a control method and a program for a power supply device, which can effectively reduce the power consumption of the power supply device and can be used in accordance with the user's usage habits.

In order to solve the above problems, the present invention proposes the following matters. In addition, in order to facilitate understanding, the symbols are given in accordance with the embodiments of the present invention, but are not limited thereto.

(1) The present invention provides a power supply device including a battery (for example, the battery 130 corresponding to Fig. 1), and an input unit (for example, the input unit 30 corresponding to Fig. 1) for receiving power from the outside; The output unit (for example, corresponding to the output unit 40 of Fig. 1) outputs the power supplied to the load; and the inverter (for example, the inverter 140 corresponding to Fig. 1) can be converted to The power of the battery is supplied to the load; the selection mechanism (for example, the switch 120 corresponding to FIG. 1) is selectable between the first state on the input side and the second state on the output side from the inverter. Selecting and transmitting power from one side of the selection to the output unit; the monitoring unit (for example, the power failure monitoring unit 150 corresponding to FIG. 1) monitors the power received by the input unit and detects the input. The abnormality of the power received by the unit; the pointing mechanism (for example, the instruction unit 180 corresponding to FIG. 1) may indicate the automatic mode or the standby mode, and the automatic mode, that is, when the monitoring mechanism detects an abnormality, the selection mechanism Automatically switch from the first state In the second state, the standby mode, when the monitoring mechanism detects an abnormality, can stand by while the state of the selection mechanism is switched according to an external instruction; The control means (for example, corresponding to the control unit 160 of Fig. 1), when the instruction means instructs the automatic mode, the abnormality detection of the monitoring means is performed, and the selection means is automatically switched from the first state to the first state. In the two-state switching control, when the pointing mode is instructed to be in the standby mode, the abnormality detection of the monitoring means is performed, and the standby control in which the state of the selecting means is switched in accordance with an external instruction is performed.

According to the present invention, when the abnormality of the input power is detected, since the automatic switching to the output side of the inverter or the standby state can be selected, the power supply to the load can be arbitrarily set at the time of power failure according to the load of the connection. It can save electricity according to the intended use.

(2) The present invention provides a power supply device. In the power supply device of (1), when the monitoring mechanism detects that an input power from the outside is abnormal, the control mechanism performs the abnormality detection in the automatic mode. The inverter is energized; in the standby mode, when the indication mechanism receives the indication that the selection mechanism is switched from the first state to the second state, the inverter is energized.

According to the present invention, even in the standby mode, since the inverter can be energized by switching the power supply to the load from the input power from the outside to the power output from the inverter, the inverter can be powered The load of the connection is arbitrarily selected whether or not to supply power to the load during a power outage.

(3) The present invention provides a power supply device. The power supply device of (1) or (2) is provided in a display mechanism (for example, corresponding to the display portion 170 of Fig. 1).

According to the present invention, since the pointing mechanism is disposed in the display mechanism, the mode selection screen can be performed on the screen in accordance with the mode selection screen of the display mechanism, and can be used in accordance with the user's usage habits.

(4) The present invention provides a power supply device, in the power supply device of (3), the display The display mechanism is provided with a display area for displaying a mode indicated by the pointing mechanism.

According to the invention, the display means is provided with a display area for displaying the instructed mode, and the instructed mode can be accurately confirmed, so that the erroneous operation can be prevented and the user's usage habit can be matched.

(5) The present invention provides a control method of a power supply device, comprising the following steps: a first step (for example, equivalent to step S113 of FIG. 3), when the inverter stops and detects an abnormality of input power from the outside In this case, the automatic mode or the standby mode is set. The automatic mode automatically switches the power supply to the load from the external input power side to the output side of the inverter, and the standby mode does not switch the inverter output side; The second step (for example, corresponding to step S114 of FIG. 3) detects an abnormality of the input power from the outside; the third step (for example, corresponding to step S105 of FIG. 4) detects the input power from the outside. An abnormality, and when the automatic mode is set, the power supply to the load is switched to the output side of the inverter; the fourth step (for example, corresponding to step S118 of FIG. 3) detects the external An abnormality of the input power, and when it is indicated as the standby mode, whether or not the power supply to the load is switched from the input power side to the output side of the inverter to the output side of the inverter The standby step is performed; and the fifth step (for example, corresponding to step S105 of FIG. 4), when the output side to be switched to the inverter is selected, the power supply to the load is switched to the output side of the inverter.

According to the present invention, the inverter is stopped and when the abnormality of the input power from the outside is detected, since it is possible to select whether or not to automatically switch to the output side of the inverter, or to switch to the output side of the inverter, the standby is maintained. According to the connection load, it is possible to arbitrarily select whether to supply power to the load during power failure, and to save power according to the intended use.

(6) The present invention proposes a control method of a power supply device, which is performed by energizing the inverter when switching to the output side of the inverter by the fifth step (for example, corresponding to step S130 of FIG. 3)

According to the present invention, when the power supply to the load is switched to the output side of the inverter, the inverter is energized, so that the energization of the inverter can be effectively suppressed, and power saving can be achieved.

(7) The present invention proposes a program for implementing a program for controlling a power supply device in a computer, comprising the following steps: a first step (for example, equivalent to step S113 of FIG. 3), when the inverter stops and detects that When the external input power is abnormal, the automatic mode or standby mode is set. The automatic mode automatically switches the power supply to the load from the external input power side to the output side of the inverter, and the standby mode does not perform the inverter output. Switching of the side; the second step (for example, corresponding to step S114 of FIG. 3) is to detect an abnormality of the input power from the outside; and the third step (for example, corresponding to step S105 of FIG. 4), detecting the When the external input power is abnormal, and the automatic mode is set, the power supply to the load is switched to the output side of the inverter; the fourth step (for example, corresponding to steps S117 and S118 of FIG. 3) When an abnormality of the input power from the outside is detected and the indication is in the standby mode, it is possible to select whether to switch the power supply to the load from the input power side to the inverter. Standby in the side state; and a fifth step (for example, equivalent to step S105 of FIG. 4), when the output side to be switched to the inverter is selected, the power supply to the load is switched to the inverter Output side.

According to the present invention, when an abnormality is detected when the inverter is stopped, since it is possible to select whether to automatically switch to the output side of the inverter or to switch to the output side of the inverter to maintain the standby state, The load of the connection is arbitrarily selected whether or not to supply power to the load during a power outage.

(8) The present invention provides a program for implementing a program for controlling a power supply device in a computer, comprising a sixth step (for example, equivalent to step S130 of FIG. 3), which is switched to the inverter by the fifth step When the output side is on, the inverter is energized.

According to the present invention, when the power supply to the load is switched to the output side of the inverter, By energizing the inverter, the energization of the inverter can be effectively suppressed, and power saving can be achieved.

According to the present invention, the normal mode of pre-driving the inverter and the power saving mode of the pre-stop reverser can be selected at the same time, in the power saving mode and the abnormality is detected, as in the normal mode, since it is possible to select whether to automatically switch to Since the output side of the inverter is in the standby state, it is possible to arbitrarily select whether or not to supply power to the load during the power failure according to the connected load, and to achieve the effect of power saving according to the intended use.

In particular, the battery is charged at night when the electricity cost is relatively low, and the power from the commercial power source is supplied to the load, and the power from the battery is supplied to the load during the day, the electricity bill can be suppressed, and when the commercial power source is abnormal at night, The power supply from the battery to the load can be suppressed as needed, and the power usage of the battery can be suppressed. As a result, since it is possible to suppress the electric power saved by the battery of the power supply device from being wasted, the effect of long-term power use can be expected in an emergency.

Moreover, the power supply device of the present invention is combined with the solar power generation device, and further, it is possible to suppress the use of electric power from the battery during the day.

10‧‧‧Commercial power supply

20‧‧‧ load

30‧‧‧ Input Department

40‧‧‧Output Department

100‧‧‧Power supply unit

110‧‧‧Charging Department

120‧‧‧ switch

130‧‧‧Battery

140‧‧‧ reverser

150‧‧‧Power outage monitor

160‧‧‧Control Department

161‧‧‧CPU

162‧‧‧Battery Monitoring Department

164‧‧‧Display Control Department

165‧‧‧Indicating Signal Identification Department

166‧‧‧Memory Department

170‧‧‧Display Department

180‧‧‧Instruction Department

S101-S130‧‧‧Steps

Fig. 1 is a structural view showing a power supply device according to an embodiment of the present invention.

Fig. 2 is a view showing the configuration of a control unit in a power supply device according to an embodiment of the present invention.

Fig. 3 is a flow chart showing the processing of the power supply device according to the embodiment of the present invention.

Fig. 4 is a flow chart showing the processing of the power supply device according to the embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail using the drawings. Further, the constituent elements of the present embodiment can be appropriately replaced with existing constituent elements and the like, and It is also possible to include various modifications such as combinations with other existing constituent elements. Therefore, the invention described in the scope of the patent application should not be limited by the description of the embodiment.

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

<Composition of power supply unit>

The configuration of the power supply device of this embodiment will be described using Fig. 1 .

As shown in Fig. 1, the power supply device 100 of the present embodiment includes an input unit 30, an output unit 40, a charging unit 110, a switch 120, a battery 130, an inverter 140, a power failure monitoring unit 150, a control unit 160, and a display unit. 170 and the instruction unit 180 are composed. The input unit 30 is connected to the commercial power source 10, and the output unit 40 is connected to the load 20.

The charging unit 110 is connected to the input unit 30 of the power supply device 100, and the input unit 30 is connected to the commercial power source 10, thereby converting the AC power input to the input unit 30 into DC power and outputting it. The input on one side of the switch 120 is connected to the input 30, the input on the other side is connected to the inverter 140, and the output is connected to the output 40. The switch 120 can switch the connection circuit of the load 20 in a first state connected to the commercial power source 10 side and a second state connected to the output side of the inverter 140 according to a control signal from the control unit 160. . The battery 130 is connected to the charging unit 110 and can be charged in accordance with DC power from the charging unit 110.

The inverter 140 converts the DC power output by the discharge of the battery 130 into an AC power that can be supplied to the load and supplies it to the input of the other side of the switch 120. The power failure monitoring unit 150 monitors the voltage of the input power, detects an abnormality abnormality monitoring signal from the voltage value, and detects a power failure by the decrease in the input power. The control unit 160 can perform control corresponding to the monitoring result of the power failure monitoring unit 150, charge/discharge control of the battery 130, or residual amount confirmation (SOC value confirmation), and switching control of the switch 120. Actuation control of the inverter and the inverter 140. The display unit 170 is connected to the control unit 160 to display a signal on the screen, and may have a function of inputting an instruction unit 180 for external instruction such as a touch screen.

<Composition of Control Unit>

The configuration of the control unit 160 in the power supply device 100 of the present embodiment will be described with reference to Fig. 2 .

As shown in Fig. 2, the control unit 160 of the present embodiment is composed of a CPU 161, a battery monitoring unit 162, a display control unit 164, an instruction signal recognition unit 165, and a storage unit 166.

The CPU 161 controls the charging unit 110 in addition to charging the battery 130, and also controls the components constituting the control unit 160. The battery monitoring unit 162 performs signal acquisition of the battery cell voltage or the like in order to monitor the charge/discharge state of the battery 130 or estimate the charge remaining amount (SOC value) of the battery 130. The display control unit 164 generates an SOC value (a charge residual value of the battery 130) to be displayed on the display unit 170, or displays the data for the current mode, etc., and sends it to the display unit 170 or the like based on the instruction or signal received from the CPU 161. Display control.

The instruction signal recognition unit 165 recognizes the instruction signal input by the user using the display unit 170 that also functions as the instruction unit 180 for inputting the mode selection instruction or the like, and sends a signal to the CPU 161 based on the recognition result. The memory unit 166 is connected to the CPU 161 and stores the current mode or the SOC value as data.

<Processing of power supply unit>

The processing of the power supply device of this embodiment will be described using Figs. 3 and 4 . In addition, in FIG. 3, after the power supply of the power supply device 100 is activated, the user is requested to perform mode switching or connection with the power-on, and the display unit 170 displays the mode switching selection screen. The display unit 170 of the present embodiment can also serve as the indicator unit 180, which is a touch screen-like component, and is in the mode of the display unit 170. Switching the selection screen, for example, letting the user select the desired mode, clicking on the part displaying the desired mode to select, generating an indication signal (data) of the indicated mode, and sending the generated signal (data) The instruction signal recognition unit 165 is turned.

When the display unit 170 has the function of the instruction unit 180 and displays the mode selection screen, the power supply device 100 waits for the user to select the mode (step S101). The mode switching is maintained in the setting mode before the power is turned on until the selection is made. In addition, the mode referred to herein means a normal mode and a power saving mode. In the present embodiment, the normal mode is such that the inverter 140 is in the driving state and the switch 120 is set to the commercial power source 10 side. In the normal mode, when the abnormality of the commercial power source 10 such as a power outage is detected, the switch 120 is automatically switched to the inverter 140 side, thereby converting the power supply to the load 20 from the state of relying on the commercial power source 10 to the state of relying on the battery 130. On the other hand, the power saving mode preliminarily sets the inverter 140 to the stop state by blocking the energization of the inverter 140, and sets the switch 120 to the commercial power source 10 side. In the power saving mode, when the commercial power source 10 such as a power failure is abnormal, the switch 120 is automatically switched to the inverter 140 side, or the standby state is maintained without automatic switching, and the operation may be different depending on the setting state. The details are as described later. Further, in the initial state, the commercial power source 10 side is selected, and the AC power from the commercial power source 10 is directly supplied to the load 20. Further, in the case where the mode selection screen is displayed, the mode is not maintained before the display mode selection screen, and the determined mode state may be set in advance, and the switch 120 may be set in accordance with the mode state.

The display unit 170 allows the user to select the normal mode or the power saving mode (step S102). The user's instruction is sent to the CPU 161 via the instruction signal recognition unit 165, and the CPU 161 performs control in accordance with the selected mode.

When the normal mode is selected, the following actions are performed (step S103). First, the inverter 140 for the energized blocked state is energized by the CPU 161 to drive the inverter 140. Again The CPU 161 sets the switch 120 to the commercial power source 10 side. The load 20 is supplied with AC power from the commercial power source 10 via the switch 120.

Further, the memory unit 166 readablely stores a signal of the "currently normal mode" in a specific memory area. Based on the stored signal, the display unit 170 displays the normal mode via the display control unit 164 to allow the user to confirm the current mode.

Then, the power failure monitoring unit 150 monitors whether or not the voltage of the power from the commercial power source 10 is lower than a predetermined threshold value (step S104). In the present embodiment, whether or not the power is turned off is not limited to a method of monitoring whether or not the voltage level of the commercial power source 10 is lower than a certain threshold value, and other methods may be used to perform power failure monitoring. Further, the present invention is not limited to the power failure, and the stable state of the power supplied from the commercial power source 10 is monitored, and the detection of the abnormality of the commercial power source 10 does not hinder the application of the present invention.

When the monitoring of the power failure monitoring unit 150 does not detect that the commercial power source 10 is abnormal, the CPU 161 checks whether the user has arbitrarily performed the mode switching instruction (step S109). This confirmation is made by the CPU 161, and the current mode signal stored in the memory unit 166 is compared with the mode indication signal from the user supplied via the display unit 170 and the display control unit 164. Upon receiving an instruction to switch to a mode different from the current mode, the control unit 160 controls the switch 120 by performing switching processing in accordance with the instruction (step S110).

On the other hand, if there is no mode switching instruction or the command signal is the same as the current mode signal (the mode is not changed), the CPU 161 does not issue the mode switching instruction, so the process returns to step S104 to perform the abnormality detection of the commercial power source 10.

When the commercial power source 10 is abnormal due to the monitoring by the power failure monitoring unit 150, the CPU 161 switches the switch 120 to the inverter 140 side (step S105). Also, issued a warning to commercial electricity Source 10 abnormal alarm, etc. For example, in addition to the audible alarm, an abnormality is displayed on the display unit 170 (step S106). The power from the battery 130 that is switched from the commercial power source 10 is immediately supplied to the load 20 via the inverter 140.

In the CPU 161, it is checked by the CPU 161 whether or not the SOC value is too low (for example, whether or not it is lower than the discharge lower limit value determined to be dischargeable) (step S107). When the SOC value is detected to be too low, the battery performance of the battery 130 is not deteriorated due to excessive discharge, and the discharge from the battery 130 is stopped. The CPU 161 performs shutdown processing of the power supply device 100 to shut down the power supply device 100 (step S108).

On the other hand, when it is not detected that the SOC value is too low, the CPU 161 checks whether the user has issued an arbitrary mode switching instruction (step S111). This confirmation is compared with the current mode signal stored in the memory unit 166 by the CPU 161 and the mode indication signal from the user supplied via the display unit 170 and the display control unit 164.

Then, when receiving the instruction to switch to the mode different from the current mode, the CPU 161 confirms that the switching instruction is received because the current mode signal is different from the mode signal indicated by the user, and the CPU 161 performs the instruction according to the user. The switch 120 is controlled by switching processing (step S112). On the other hand, if there is no mode switching instruction or the indication signal is the same as the current mode signal (the mode is not changed), the CPU 161 confirms that there is no switching indication because the mode signal from the user is not input as compared with the current mode signal. Or, the CPU 161 does not perform the mode switching process because the mode signal from the user and the current mode signal are the same, and the CPU 161 does not perform the mode switching process. Therefore, the process returns to step S107 to confirm whether the SOC value is too low.

When the power saving mode is selected, the following operation is performed (step S113). First, the energization of the inverter 140 is blocked, and the inverter 140 is stopped to disable the inverter 140. Again, The switch 120 is set to the side of the commercial power source 10. Thereby, the power consumed by the inverter 140 (including the standby power) can be reduced, and the AC power supplied from the commercial power source 10 can be supplied to the load 20 via the input unit 30, the switch 120, and the output unit 40.

Further, a selection screen for automatically switching from the commercial power source 10 side to the inverter 140 side when the commercial power source 10 is abnormal is also displayed. At the time of abnormality detection, automatic/manual (standby) switching setting from the output of the commercial power source 10 to the output of the inverter 140 side can be performed. In the selection screen displayed by the display unit 170 having the function of the indication unit 180, the user selects an instruction to automatically switch or maintain the standby state and manually switches the selected signal via the indication signal recognition unit 165. The CPU 161 is stored in the memory unit 166. In addition, when the selection instruction from the user is not confirmed after a certain period of time, for example, it is regarded as selecting to adopt automatic switching, and power supply to the load 20 is still performed in the event of a power failure, just in case.

Further, as will be described later, when switching from the commercial power source 10 side to the inverter 140 side, the inverter 140 is also in the driving state of energization, and is the same state as the case where the switch 120 is switched to the inverter 140 side in the normal mode. . Therefore, in the power saving mode, switching the switch 120 to the inverter 140 side output may also be referred to as "return normal mode". In particular, when the user manually switches to the output side of the inverter 140, it is easier to understand that the "return to normal mode" is displayed on the selection screen, so that it is switched to the inverter 140 side, so that it does not deviate from the scope of the subject matter. There are no restrictions on changes in the performance of the actuated state.

Further, the memory unit 166 stores a signal in which the current power saving mode is readable in a specific memory area, and stores whether or not the signal of the normal mode is automatically switched back during abnormality detection. Based on the stored signal, the CPU 161 and the display control unit 164 display [now power saving mode] on the display unit 170 to allow the user to confirm the current mode. At this time, it is also possible to display that the switching to the inverter 140 side when the abnormality is detected is a manual (or standby) or automatic setting condition.

Then, the power failure monitoring unit 150 monitors whether or not the voltage of the input power from the commercial power source 10 is lowered to a predetermined threshold or less (step S114).

When the monitoring of the power failure monitoring unit 150 does not detect that the commercial power source 10 is abnormal, the CPU 161 checks whether the user arbitrarily instructs the mode switching (step S123). The CPU 161 compares the current mode signal stored in the memory unit 166 with the mode indication signal from the user supplied via the display unit 170 and the display control unit 164.

When the instruction is switched to the mode different from the current mode, the CPU 161 confirms that the switching instruction is received because the current mode signal is different from the mode signal indicated by the user, and the CPU 161 controls the switching process according to the instruction from the user. The switch 120 (step S124). On the other hand, if there is no mode switching instruction or the indication signal is the same as the current mode signal (the mode is not changed), the CPU 161 confirms that there is no switching indication because the mode signal from the user is not input as compared with the current mode signal. Or, the mode signal from the user and the current mode signal are the same, and it is confirmed that there is no switching instruction, and the CPU 161 does not perform the mode switching process. Therefore, the process returns to step S114 to perform the abnormality detection of the commercial power source 10.

Next, when the commercial power source 10 is abnormally detected by the monitoring of the power failure monitoring unit 150, the CPU 161 reads out the signal stored in the memory unit 166, and confirms whether or not the automatic switching from the commercial power source 10 side to the output side of the inverter 140 is performed. Or standby (step S115).

When the CPU 161 confirms that it is automatically switched based on the signal stored in the memory unit 166, the CPU 161 energizes the inverter 140 to control the inverter 140 (step S130). Then, proceeding to step S105, the switch 120 is switched to the inverter 140 side. Thereby, power from the battery 130 can be supplied to the load 20 via the inverter 140. Thereafter, the steps are the same as those shown in steps S106-S108, S111, and S112. That is, proceeding to the point of step S105, the power supply device 100 has returned to the same state as the normal mode.

On the other hand, when the CPU 161 confirms that the standby is in progress based on the signal stored in the memory unit 166, the CPU 161 issues an alarm or the like for warning that the commercial power source 10 is abnormal (step S116). At this time, the setting state of the switch 120 is maintained on the side of the commercial power source 10, and the energization of the inverter 140 is also kept in a blocked state.

The CPU 161 displays on the display unit 170 the display unit 170 to select whether or not to automatically supply the output from the inverter 140 to the selection screen for the load 20 (step S117). The CPU 161 determines whether or not the user has selected to switch to the output side of the inverter 140 based on the input signal via the display unit 170 (instruction unit 180) constituted by the touch panel (step S118).

The CPU 161 judges that the output side to be switched to the output side of the inverter 140 is selected, and proceeds to step S130 to energize and drive the inverter 140. Thereafter, the same flow is performed after step S105 of the normal mode. Then, proceeding to the point of step S105, the power supply device 100 returns to the same state as the normal mode.

The CPU 161 monitors whether the switching to the output side of the inverter 140 reaches a specific value in the unselected state elapsed time, that is, whether a certain time has elapsed in the standby state, or whether the SOC value is too low (for example, whether it is lower than the judged as The lower limit of the discharge that can be discharged) (step S119). When the CPU 161 determines that the specific time has elapsed or detects that the SOC value is too low, the CPU 161 performs shutdown processing of the power supply device 100 (step S120).

When the specific time has not elapsed and the SOC value is not detected to be too low, the CPU 161 checks whether the user has an arbitrary instruction mode switching (step S121). This confirmation is performed by the CPU 161 comparing the current mode signal stored in the memory unit 166 with the mode indication signal of the user supplied via the display unit 170 and the display control unit 164.

When the instruction is switched to the mode different from the current mode, the CPU 161 confirms that the switching instruction is received because the current mode signal is different from the mode signal indicated by the user, and the CPU 161 controls the switching process according to the instruction from the user. The switch 120 (step S122). On the other hand, if there is no mode switching instruction or the command signal is the same as the current mode signal (the mode is not changed), the process returns to step S119, and the monitoring of the elapsed time and the SOC value is performed in the standby state.

As described above, according to the present embodiment, the normal mode and the power saving mode can be selected, and in the power saving mode, an abnormality is detected, as in the normal mode, since it is possible to select to automatically switch to the output side of the inverter or Since the standby state is maintained, it is possible to arbitrarily set whether or not to supply power to the load at the time of power failure according to the connected load, and to save power according to the intended use.

Further, the processing of the power supply device 100 is recorded on a recording medium readable by a computer system, and the program recorded on the recording medium is read into a CPU in the power supply device 100, and the power supply device of the present invention can be realized by implementing the program. The computer system referred to herein includes hardware such as an OS or a peripheral device.

In addition, the "computer system" uses the WWW (World Wide Web) system, and also includes the environment (or display environment) provided by the official website. Further, the program may be transferred from another computer system to a computer system such as a memory device via a transmission medium or a transmission wave in the transmission medium. Here, the "transmission medium" of the transmission program refers to a communication line (communication line) such as a network (communication network) such as the Internet or a telephone line, which is a medium for transmitting a signal function.

Moreover, the aforementioned program may also be used to implement one of the aforementioned functions. Furthermore, it can also be realized by a combination of programs that have recorded the aforementioned functions in a computer system, that is, a differential file (differential program).

Hereinabove, the embodiment of the present invention will be described in detail with reference to the drawings, but the specific embodiment thereof The configuration is not limited to the embodiment, and includes designs and the like that do not depart from the gist of the present invention.

S101-S130‧‧‧Steps

Claims (8)

A power supply device includes: a battery; an input unit that receives power from the outside; an output unit that outputs power to the load; and an inverter that converts to supply power from the battery to the load; a selection mechanism for selecting between a first state on the side of the input unit and a second state on the output side of the inverter, and transmitting power from the side of the selection to the output; monitoring The mechanism monitors the power received by the input unit and detects an abnormality of the power received by the input unit; and the indication mechanism may indicate that the automatic mode, that is, when the monitoring mechanism detects an abnormality, automatically selects the selection mechanism The first state is switched to the second state; or the standby mode is indicated, that is, when the monitoring mechanism detects an abnormality, the state of the selection mechanism can be switched according to an external indication; and the control mechanism When the indication mechanism indicates the automatic mode, the abnormality detection corresponding to the monitoring mechanism is performed, and the selection mechanism is automatically switched from the first state to the Second state of the switching control; when indicated by the indication means that the standby mode, means for monitoring the abnormality detection should be performed can be controlled standby state according to the external instruction selection means for switching the state of standby. The power supply device of claim 1, wherein the monitoring mechanism detects that the input power from the outside is abnormal, and the control mechanism performs the power supply of the inverter in response to the abnormality detection in the automatic mode. In the case of the standby mode, when the indication mechanism receives an instruction to switch the selection mechanism from the first state to the second state, the inverter is energized. The power supply device of claim 1 or 2, wherein the indicating mechanism is disposed in the display mechanism. The power supply device of claim 3, wherein the display mechanism is provided with a display area for displaying a mode indicated by the indication mechanism. A control method for a power supply device includes the following steps: In the first step, when the inverter stops and detects an abnormality of input power from the outside, an automatic mode or a standby mode is set, and the automatic mode is to be loaded The power supply is automatically switched from the external input power side to the output side of the inverter, the standby mode is not switching the inverter output side; the second step is detecting the abnormality of the input power from the outside; the third step, The abnormality of the input power from the outside is detected, and when the automatic mode is set, the power supply to the load is switched to the output side of the inverter; and in the fourth step, the abnormality of the input power from the outside is detected. And when it is indicated as the standby mode, it is possible to select whether to wait for the power supply to the load to be switched from the external input power side to the output side of the inverter; and the fifth step, in the selection When switching to the output side of the inverter, the power supply to the load is switched to the output side of the inverter. The control method of the power supply device according to claim 5, wherein when the fifth step is switched to the output side of the inverter, the inverter is energized. A program is a program for controlling a power supply device in a computer, and includes the following steps: The first step is to set an automatic mode when the inverter stops and detects an abnormality of input power from the outside, which is to be loaded. The power supply is automatically switched from the input power side from the outside To the output side of the inverter; or set the standby mode, which does not perform the switching of the inverter output side; the second step is to detect the abnormality of the input power from the outside; the third step is to detect the input from the outside When the power is abnormal and is set to the automatic mode, the power supply to the load is switched to the output side of the inverter; the fourth step is to detect an abnormality of the input power from the outside and indicate the standby mode. When it is possible to select whether to wait for the power supply to the load to be switched from the external input power side to the output side of the inverter; and the fifth step, in selecting the output side to be switched to the inverter At this time, the power supply to the load is switched to the output side of the inverter. The program described in claim 7 includes a sixth step of energizing the inverter when the fifth step is switched to the output side of the inverter.