KR101103502B1 - Electric power storage apparatus for home use - Google Patents

Abstract

An object of the present invention is to use the power remaining in the night time or the low power bills to store the power and to use it in the power peak time zone to achieve the leveling of power usage by time period, earthquake, typhoon, flood, etc. It can be used as an emergency power source in case of emergency such as natural disaster or fire or power outage, and it can also store surplus power of power company, solar power or wind power and use it at peak time or emergency power. At the same time, it is to provide a home power storage device that can be installed in a narrow space of the interior or exterior walls of existing buildings, such as buildings, officetels, apartments are limited space.

Description

ELECTRIC POWER STORAGE APPARATUS FOR HOME USE}

The present invention relates to a home electric power storage device, and more specifically, to store power by using electricity remaining in a low power time zone or a midnight power rate, and to use the power peak time zone to achieve leveling of power by use time. It can be used as emergency power in case of natural disaster such as earthquake, typhoon, flood or fire or power outage, and also save surplus power of power company, solar power or wind power. The present invention relates to a home electric power storage device that can be used in peak hours or in an emergency, and can be installed in a narrow space inside or outside an existing building where space is limited such as a building, an officetel, or an apartment.

Normally, the minimum required basic power consumption that can be used as an emergency power source at home in case of natural disaster such as earthquake, typhoon, flood or fire or power outage is 100W, 200W of refrigerator, 200W of TV and computer. A total of 500W of power is necessary.

As a photovoltaic device that has been widely used in the related art for minimizing such a minimum power, Korean Patent Application Publication No. 10-2011-38230 (published date; April 14, 2011) is disclosed.

The photovoltaic device disclosed in Korean Patent Laid-Open No. 10-2011-38230 includes a solar panel, a thermoelectric element, a heat dissipation unit, and a power storage unit.

The solar panel absorbs sunlight energy and converts it into electrical energy to generate electricity. The solar panel may be arranged in a matrix and connected in series or in parallel or in parallel to each other in a matrix.

The thermoelectric element converts the waste heat generated from the solar panel by the Seebeck effect into electrical energy. At this time, one side and the other side of the thermoelectric element is made of a metal plate, between the one side and the other side P-type semiconductor and The N-type semiconductor may be formed by combining in a π-type.

One side of the thermoelectric element is attached to the rear surface of the solar panel, and is heated by the waste heat generated in the solar panel, the one side heated in this way to give electrons to the P-type semiconductor is insufficient electrons. This lack of electrons is drawn from the N-type semiconductor, and this process generates a full position between both electrodes to which the circuit is connected, resulting in a current flowing from the N-type semiconductor side to the P-type semiconductor. That is, the waste heat generated in the solar panel is converted into electricity in the thermoelectric element. The heat dissipation part is attached to the other side of the thermoelectric element, and emits heat generated by the thermoelectric element. At this time, the heat dissipation part is attached to the other side of the thermoelectric element is configured to include a heat sink receiving heat generated from the thermoelectric element, and arranged at a predetermined interval on the heat sink, and comprises a plurality of heat dissipation fins for dissipating heat transferred to the heat sink into the air Can be.

In addition, a plurality of flow paths may be formed in the heat dissipation part of the heat dissipation part through the front, rear, left, and right sides of the heat dissipation so that coolant flows in and out.

By the way, the conventional photovoltaic device configured as described above can supply power for a billboard using a small amount of power from a capacitor, but reserves power by using electricity remaining in a low-time or midnight power rate. It can not be used to equalize power usage by peak hours, and can not be used as emergency power under emergency conditions such as natural disasters such as earthquake, typhoon and flood, fire and power failure. Because of the power generation by using, there are various problems such as the power supplied by the power generation company or the surplus power generated by the wind power generation can not be stored and used in the peak time or emergency of the power.

Accordingly, the present invention has been made to solve the above-mentioned various problems, and an object of the present invention is to store power using power remaining in a low power time zone or a late night power, and use power at a power peak time zone. The present invention provides a home electric power storage device capable of leveling by time.

Another object of the present invention is to provide a home power storage device that can be used as an emergency power source that can be used in emergency conditions such as natural disasters such as earthquakes, typhoons, floods, fires and power outages.

Still another object of the present invention is to provide a home electric power storage device that can store surplus power of solar light or wind power and use it in peak time or in case of emergency.

Another object of the present invention is a small household power (for example, width × height × depth = 2m × 2m × 0.6m) that can be installed in a building, officetel, apartment, etc., space or space inside the existing building limited space To provide a storage device.

In order to achieve the above object, the home power storage device according to the first embodiment of the present invention receives an AC power supplied from a power company through a power meter and detects whether or not an overcurrent flows by an overcurrent protector, so that the overcurrent does not flow. The AC power supplied by the power company is received by the second earth leakage breaker through the power meter and the overcurrent protector to detect whether there is a short circuit, and down-converted to a certain level by the down / boost converter, and controlled by the control panel. A home power storage device for converting the DC voltage from the DC converter to accumulate the DC voltage in the storage battery; Normally, AC power supplied from the power company is received through the power meter to detect the overcurrent in the overcurrent protector. If no overcurrent is detected, connect the A and B terminals to supply AC power to the first earth leakage breaker of the home distribution panel. In order to apply the AC power supplied from the power company to the second earth leakage breaker at a time when the power rate is low or at night, the terminal A and C are connected to maintain the switching on state of the second earth leakage breaker, In case of power failure, natural disaster, or fire, DC power stored in the battery of the household power storage device is converted from AC / DC converter to AC power under the control of the control panel, and then boosted by a down / boost converter. A switching switch for switching the D terminal and the B terminal to be applied to the first earth leakage breaker of the home distribution panel; Characterized in that the ratio.

In addition, the home power storage device according to the second embodiment of the present invention receives the AC power supplied from the power company through the power meter to detect whether the overcurrent flows by the overcurrent protector at the power company when the overcurrent does not flow Receives the supplied AC power from the second earth leakage breaker through the power meter and the overcurrent protector, detects whether there is a short circuit, and converts the down / step-up converter to a certain level, and controls the DC from the AC / DC converter under control of the control panel. A home power storage device for converting the voltage into a storage battery and storing a DC voltage; Normally, the power company receives power from the power meter and detects the overcurrent in the overcurrent protector. If no overcurrent is detected, connects A and B terminals to supply AC power to the first earth leakage breaker in the home distribution panel. When the solar cell module generates power, it connects the E terminal and the B terminal to supply AC power generated by the solar cell module to the first earth leakage breaker of the home distribution panel, and the AC power is low in time zone or midnight. In order to apply the AC power supplied from the power company to the second earth leakage breaker, the terminal A and the C terminal are connected to maintain the switching on state of the second earth leakage breaker, and generated by the solar cell module under the control of the distributor. AC power is charged to the storage battery of the home power storage device through a distributor and a solar charger, and the power peak time zone, In case of power failure time, natural disaster or fire, DC power stored in the battery of the household power storage device is received by AC / DC converter and converted from AC / DC converter to AC power by control of the control panel, and AC / DC converter And a switching switch for connecting the D terminal and the B terminal in order to receive the AC power outputted from the step-up / step-up converter and apply it to the first earth leakage breaker of the home distribution panel.

According to the home electric power storage device of the present invention, by using the power remaining in the time zone of low power or midnight, the power is stored and then used in the power peak time zone to achieve the leveling of power usage by time, earthquake, It can be used as an emergency power source in case of natural disaster such as typhoon, flood, fire or other power failure, as well as storing surplus power of power company, solar power or wind power, At the same time, there is an effect that can be installed in the interior or exterior walls of existing buildings where space is limited, such as buildings, officetels, apartments.

FIG. 1 stores power supplied from a power company to a home power storage device according to a first embodiment of the present invention using power remaining in a time zone having a low power rate or at midnight, and then stored in a power peak time zone. A circuit block diagram schematically showing a state of using power.
FIG. 2 stores power supplied from a power company to a domestic power storage device according to a second embodiment of the present invention using power remaining in a low power time period or a late night time and stored at a power peak time period. A circuit block diagram schematically showing a state of using power.
3 is a view schematically illustrating a control panel of a home power storage device according to first and second embodiments of the present invention.

Hereinafter, a home power storage device according to a first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

1 and 3, the home power storage device according to the first embodiment of the present invention receives the AC power supplied from the power company 1 through the power meter (2) by the overcurrent protector (3) Detects whether or not an overcurrent flows and receives an AC power supplied from the power company (1) from the second earth leakage breaker (21) through the power meter (2) and the overcurrent protector (3). At the same time as the detection, the down / step-up converter 22 down-converts to a predetermined level, and under the control of the control panel 24, the AC / DC converter 23 converts the DC voltage into a DC voltage. A power storage device 20 for storing electricity; When the AC power supplied from the power company 1 is normally received through the power meter 2, the overcurrent protector 3 detects the overcurrent, and when the overcurrent is not detected, the terminal A and the B terminal are connected to each other. To supply the AC power to the first earth leakage breaker (14), and to apply the AC power supplied from the power company (1) to the second earth leakage breaker (21) at a time when the electric charge is low or at night. A terminal is connected to maintain the switching-on state of the second ground fault circuit breaker 21, and the electrical storage is stored in the storage battery 25 of the household power storage device 20 when a power peak time zone, a power failure time zone, a natural disaster occurs, or a fire occurs. Converted DC power to AC power by AC / DC converter 23 under the control of control panel 24, and then boosted by down / step-up converter 22 to open the first earth leakage breaker of the home distribution board 10. To apply to (14) terminals D and B And a; change-over switch 30 for switching to connect the.

Next, the operation of the home power storage device according to the first embodiment of the present invention configured as described above will be described with reference to the accompanying drawings.

When supplying AC power supplied from electric power company (1) to home distribution board

In the normal case of supplying AC power to the home distribution board, the AC power supplied by the power company 1 is received through the power meter 2, and the overcurrent protector 3 detects the overcurrent and the overcurrent is not detected. A terminal and a B terminal of (30) are connected to supply AC power to the first earth leakage breaker 14 of the home distribution board 10. At this time, the first earth leakage breaker 14 detects whether there is a short circuit of the AC power. If this is not detected, since the AC power is supplied to the first and second switches 15 and 17, respectively, the first and second loads 16 and 18 are driven.

Accumulation in the storage battery (25) during late night hours or when time is low

When power is stored in the storage battery 25 at midnight hours or when time is low, the AC power supplied from the electric power company 1 is supplied to the home power distribution board 10. When the overcurrent protector 3 detects the overcurrent and the overcurrent is not detected, the terminal A and the C terminal of the switching switch 30 are connected to the second earth leakage breaker 21 of the home power storage device 20. In this case, when the short circuit breaker 21 detects a short circuit of the AC power and a short circuit is not detected, the AC power is down by the down / boost converter 22 to a predetermined level. The AC power supply down to the predetermined level by the down / boost converter 22 is output to the AC / DC converter 23.

The AC / DC converter 23 receives AC power down to a predetermined level, and converts AC power to DC power under the control of the control panel 24 to store the battery 25.

The DC power stored in the battery 25 is used as an emergency power source in an emergency condition such as power peak time zone, natural disaster or fire or other power failure.

In case of an emergency such as a natural disaster such as an earthquake, typhoon or flood or fire or power outage, turn on the on / off button 24a of the control panel 24 and connect the D terminal of the selector switch 30 to the B terminal. , DC power stored in the battery 25 of the household power storage device 20 at the time of power peak time, blackout time, natural disasters (for example, disasters such as earthquake, typhoon, flood, etc.) It receives from the / DC converter 23, converts it into AC power under the control of the control panel 24, and outputs it to the down / boost converter 22.

At this time, since the D terminal of the changeover switch 30 is connected to the B terminal, the down / boost converter 22 receives the AC power supplied by the AC / DC converter 23 and boosts it to a predetermined level to thereby boost the home distribution board 10. Output to the first ground fault circuit breaker 14, and at this time, the first ground fault circuit breaker 14 detects whether the AC power is leaked and if the ground fault is not detected, respectively, to the first and second switches 15 and 17, respectively. Since AC power is supplied, respectively, the first and second loads 16 and 18 are driven respectively.

In other words, the surplus power of the power company, photovoltaic power generation or wind power generation is stored and stored in the storage battery 25 during peak conditions of power consumption or during emergency conditions of natural disasters such as earthquakes, typhoons, floods, fires or other power failures. The stored DC power is received by the AC / DC converter 23 and converted into AC power of constant voltage and constant frequency by the control panel 24 and output to the down / boost converter 22, and the down / boost converter ( 22 receives the AC power converted from the AC / DC converter 23 to the AC power and boosts the AC power of a predetermined level in the down / boost converter 22 to the home distribution panel 10 through the switch 30. ) To the emergency power supply.

Next, a home power storage device according to a second embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the description of the second embodiment of the present invention, the same parts as in the second embodiment will be denoted by the same reference numerals and redundant descriptions will be omitted.

2 and 3, the home power storage device according to the second embodiment of the present invention receives the AC power supplied from the power company 1 through the power meter (2) by the overcurrent protector (3) Detects whether or not an overcurrent flows and receives an AC power supplied from the power company (1) from the second earth leakage breaker (21) through the power meter (2) and the overcurrent protector (3). At the same time as the detection, the down / step-up converter 22 down-converts to a predetermined level, and under the control of the control panel 24, the AC / DC converter 23 converts the DC voltage into a DC voltage. A power storage device 20 for storing electricity; Normally receives the power supplied from the power company (1) through the power meter (2) to detect the overcurrent in the overcurrent protector (3), if the overcurrent is not detected by connecting the terminal A and terminal B to the home distribution board (10) While supplying AC power to the first earth leakage breaker 14 of the solar cell module 50, the AC power generated by the solar cell module 50 by connecting the E terminal and the B terminal at the time of power generation in the solar cell module 50 distributor AC power is supplied to the first earth leakage breaker 14 of the home distribution panel 10 through the second earth leakage breaker 21, and the AC power supplied from the power company 1 at a low time period or at night. In order to apply the terminal A and the terminal C to maintain the switching-on state of the second earth leakage breaker 21, at the same time, under the control of the distributor 52, AC power generated in the solar cell module 50 distributor ( 52) and the home power via the solar charger 53 The AC power is stored in the storage battery 25 of the storage device 20, and the DC power stored in the storage battery 25 of the household power storage device 20 in the event of a power peak, a power failure time zone, a natural disaster, or a fire occurs. The converter 23 receives the AC power from the AC / DC converter 23 by the control of the control panel 24 and receives the AC power output from the AC / DC converter 23. And a switching switch (30) for connecting the D terminal and the B terminal to be boosted at and applied to the first earth leakage breaker (14) of the home distribution panel (10).

The household power storage device 20 receives the AC power supplied from the power company 1 through the power meter 2 and detects whether or not the overcurrent flows by the overcurrent protector 3 and does not flow when the overcurrent does not flow. A second earth leakage circuit breaker 21 which receives AC power supplied from the company 1 through the power meter 2 and the overcurrent protector 3 and detects whether the earth leakage occurs; When the second earth leakage breaker 21 detects that AC power is not leaked, the down / step-up converter 22 receives AC power from the second earth leakage breaker 21 and converts it down to a predetermined level of AC power. )Wow; An AC / DC converter 23 for converting AC power down to a predetermined level from the down / step-up converter 22 into DC power of a predetermined level; A control panel 24 for controlling the operation of the AC / DC converter 23 and displaying an operating state of the AC / DC converter 23; And a storage battery 25 configured to receive and store a DC voltage converted by the AC / DC converter 23 into a DC voltage of a predetermined level by the control of the control panel 24.

The control panel 24 has an on / off button 24a for controlling the operation of the AC / DC converter 23 and a data transmission connector for transmitting data to a management system (not shown) of the battery 25. 24n; an RS-232C connector), a reset button 24b for resetting at the time of an error (when a connection failure occurs) of the data transfer connector 24n, and the storage battery 25 at the switching on of the on / off button 24a. At the same time as indicating that the DC power is supplied to the AC / DC converter (23), and the AC power is supplied to the power company (1) through the switching switch 30, AC power generated from the solar cell module 50 is supplied through the distributor 52 and the switch 30, the power supply to emit light to indicate that AC power is supplied to the first circuit breaker 14 of the home distribution panel 10 When the display LED 24c (power supply display light emitting diode) and an abnormal state occur, The alarm display LED 24d that emits light to alert the occurrence of a phase condition, the operation display LED 24e that emits light to indicate that the AC / DC converter 23 is in normal operation, and the battery 25 are charged. Power storage display LED (24f) to emit light to display, the discharge display LED (24g) to emit light to indicate that the DC power stored in the battery 25 is discharged, and the amount of charge stored in the storage battery 25 100% charge state display LED 24h that emits light to indicate that it is 100%, 80% charge state display LED 24i that indicates that the charge amount stored in the storage battery 25 is 80%, and the storage battery 25 A 60% charge state display LED 24k that emits light to indicate that the stored charge amount is 60%, a 40% charge state display LED 24k that emits light to indicate that the charge amount stored in the storage battery 25 is 40%, 20% charge state display LED (24m) indicating that the charge amount stored in the storage battery 25 is 20% It is configured.

In the description of the first and second embodiments, the storage battery 25 uses any one selected from a lead acid battery, a lithium ion (Li-ion) battery, a lithium polymer battery, a lithium iron phosphate battery or a Ni-MH battery. It is preferable.

The home electric power storage device according to the second embodiment of the present invention uses the AC power generated in the solar cell module 50 and, if left, the electric power through the AC power line P and the power meter 2 in the distributor 52. It can also sell to the company (1).

Next, the operation of the home power storage device according to the second embodiment of the present invention configured as described above will be described with reference to the accompanying drawings.

When supplying AC power supplied from electric power company (1) to home distribution board

In the normal case of supplying AC power to the home distribution board, the AC power supplied by the power company 1 is received through the power meter 2, and the overcurrent protector 3 detects the overcurrent and the overcurrent is not detected. A terminal and a B terminal of (30) are connected to supply AC power to the first earth leakage breaker 14 of the home distribution board 10. At this time, the first earth leakage breaker 14 detects whether there is a short circuit of the AC power. If this is not detected, since the AC power is supplied to the first and second switches 15 and 17, respectively, the first and second loads 16 and 18 are driven.

Accumulation in the storage battery (25) during late night hours or when time is low

When power is stored in the storage battery 25 at midnight hours or when time is low, the AC power supplied from the electric power company 1 is supplied to the home power distribution board 10. When the overcurrent protector 3 detects the overcurrent and the overcurrent is not detected, the terminal A and the C terminal of the switching switch 30 are connected to the second earth leakage breaker 21 of the home power storage device 20. In this case, when the short circuit breaker 21 detects a short circuit of the AC power and a short circuit is not detected, the AC power is down by the down / boost converter 22 to a predetermined level. The AC power supply down to the predetermined level by the down / boost converter 22 is output to the AC / DC converter 23.

The AC / DC converter 23 receives the AC power down to a predetermined level, converts the AC power into DC power under the control of the control panel 24, and accumulates the battery 25 in the solar cell module 50. The electrical storage of the storage battery 25 using the generated AC power is stored in the storage battery 25 through the distributor 52 and the solar charger 53.

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The use of DC power stored in the battery 25 as an emergency power source during power peak time periods, natural disasters, fires or other power failures.

In case of emergency during natural disaster such as power peak time, earthquake, typhoon, flood or fire or power outage, turn on / off button 24a of control panel 24 to turn on D terminal of switch 30. When connected to the terminal, the DC power stored in the storage battery 25 of the household power storage device 20 is received by the AC / DC converter 23 to convert to AC power by the control of the control panel 24 to down / boost It outputs to the converter 22.

At this time, since the D terminal of the changeover switch 30 is connected to the B terminal, the down / boost converter 22 receives the AC power supplied from the AC / DC converter 23 and boosts it to a predetermined level so as to boost the home distribution board 10. Output to the first ground fault circuit breaker 14, and at this time, the first ground fault circuit breaker 14 detects whether the AC power is leaked and if the ground fault is not detected, respectively, to the first and second switches 15 and 17, respectively. Since AC power is supplied, the first and second loads 16 and 18 are driven.

In other words, the AC / DC converter 23 stores surplus power of a power company, photovoltaic power generation, or wind power generation, and then, in case of emergency conditions of natural disasters such as earthquakes, typhoons, floods, fires or other power failures, or of power consumption. In the peak time period, the DC power stored in the storage battery 25 is converted into AC power of a constant voltage and a constant frequency under the control of the control panel 24 and output to the down / step-up converter 22, and the down / step-up converter ( 22 receives the AC power converted from the AC / DC converter 23 into AC power, boosts the power to a predetermined level of AC power, and supplies the power to the home distribution panel 10 through the switch 30 as emergency power.

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Therefore, the present invention can be used to store the power by using the power remaining in the time zone or the late night when the power bill is cheap, and can be used in the power peak time zone to achieve the leveling of the power usage by time period, such as earthquake, typhoon, flood, etc. In addition to being used as an emergency power source in emergency conditions such as natural disasters, fires or power outages, it can be used to store surplus power from a power company, photovoltaic power generation, or wind power generation and use it at peak times or during emergencies. At the same time, it can be installed in a narrow space inside or outside walls of existing buildings where space is limited, such as buildings, officetels, and apartments.

In the above description, although illustrated and described with reference to specific embodiments, the present invention is not limited thereto, for example, by a person of ordinary skill in the art without departing from the concept of the invention Of course, various design changes are included in the claims of the present invention.

1: power company 2: power meter
3: overcurrent protector 10: home distribution board
14: 1st earth leakage breaker 15: 1st switch
16: first load 17: second switch
18: second load 20: household power storage device
21: second earth leakage breaker 22: down / boost converter
23: AC / DC converter 24: control panel
24a: On / Off button 24b: Reset button
24c: Power supply LED 24d: Alarm LED
24e: Operation display LED 24f: Power storage LED
24g: Discharge display LED 24h: 100% charge status display LED
24i: 80% charge status LED 24j: 60% charge status LED
24k: 40% charge status LED 24m: 20% charge status LED
24n: Data transmission connector 25: Storage battery
30: switch 50: solar cell module
52: distributor 53: solar charger

Claims (4)

The AC power supplied from the power company 1 is received through the power meter 2 to detect whether the overcurrent flows by the overcurrent protector 3, and the AC power supplied from the power company 1 when no overcurrent flows. Is received by the second earth leakage circuit breaker 21 through the power meter 2 and the overcurrent protector 3 to detect whether there is a short circuit, and down-converted to a predetermined level by the down / boost converter 22, and the control panel 24 A home power storage device 20 converting the DC voltage from the AC / DC converter 23 to control the DC voltage and storing the DC voltage in the storage battery 25 under the control of;
When the AC power supplied from the power company 1 is normally received through the power meter 2, the overcurrent protector 3 detects the overcurrent, and when the overcurrent is not detected, the terminal A and the B terminal are connected to each other. To supply the AC power to the first earth leakage breaker (14), and to apply the AC power supplied from the power company (1) to the second earth leakage breaker (21) at a time when the electric charge is low or at night. A terminal is connected to maintain the switching-on state of the second ground fault circuit breaker 21, and the electrical storage is stored in the storage battery 25 of the household power storage device 20 when a power peak time zone, a power failure time zone, a natural disaster occurs, or a fire occurs. Converted DC power to AC power by AC / DC converter 23 under the control of control panel 24, and then boosted by down / step-up converter 22 to open the first earth leakage breaker of the home distribution board 10. To apply to (14) terminals D and B And home electric power storage device, characterized in that with a; change-over switch 30 for switching to connect the. The AC power supplied from the power company 1 is received through the power meter 2 to detect whether the overcurrent flows by the overcurrent protector 3, and the AC power supplied from the power company 1 when no overcurrent flows. Is received by the second earth leakage circuit breaker 21 through the power meter 2 and the overcurrent protector 3 to detect whether there is a short circuit, and down-converted to a predetermined level by the down / boost converter 22, and the control panel 24 A home power storage device 20 converting the DC voltage from the AC / DC converter 23 to control the DC voltage and storing the DC voltage in the storage battery 25 under the control of;
Normally receives the power supplied from the power company (1) through the power meter (2) to detect the overcurrent in the overcurrent protector (3), if the overcurrent is not detected by connecting the terminal A and terminal B to the home distribution board (10) While supplying AC power to the first earth leakage breaker 14 of the solar cell module 50, the AC power generated by the solar cell module 50 by connecting the E terminal and the B terminal at the time of power generation in the solar cell module 50 distributor AC power is supplied to the first earth leakage breaker 14 of the home distribution panel 10 through the second earth leakage breaker 21, and the AC power supplied from the power company 1 at a low time period or at night. In order to apply the terminal A and the terminal C to maintain the switching-on state of the second earth leakage breaker 21, at the same time, under the control of the distributor 52, AC power generated in the solar cell module 50 distributor ( 52) and the home power via the solar charger 53 The DC power stored in the battery 25 of the household power storage device 20 is charged in the storage battery 25 of the charging device 20, and the power peak time zone, the blackout time zone, the natural disaster occurs, and the fire occurs. The converter 23 receives the AC power from the AC / DC converter 23 by the control of the control panel 24 and receives the AC power output from the AC / DC converter 23. And a switching switch (30) for connecting the D terminal and the B terminal to be boosted at and applied to the first earth leakage breaker (14) of the home distribution panel (10). The method according to claim 1 or 2, wherein the household power storage device 20 receives the AC power supplied from the power company 1 through the power meter (2) whether the overcurrent flow by the overcurrent protector (3) A second earth leakage circuit breaker (21) which detects whether or not an electric current is supplied through the power meter (2) and the overcurrent protection device (3) when the over current does not flow by detecting a; When the second earth leakage breaker 21 detects that AC power is not leaked, the down / step-up converter 22 receives AC power from the second earth leakage breaker 21 and converts it down to a predetermined level of AC power. )Wow; An AC / DC converter (23) for converting AC power down to a predetermined level from the down / boost converter (22) into DC power of a predetermined level by the control of the control panel (24); A control panel 24 for controlling the operation of the AC / DC converter 23 and displaying an operating state of the AC / DC converter 23; And a storage battery 25 configured to receive and store a DC voltage converted from the AC / DC converter 23 into a DC voltage of a predetermined level by the control of the control panel 24. . delete

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