KR102262975B1 - Battery operating apparatus for temporary fire fighting facilities and its method - Google Patents

Abstract

A battery operating apparatus for a temporary firefighting facility in accordance with a first invention of the present application comprises: a main battery formed by including a plurality of battery cells; a sub battery formed by including a plurality of battery cells; an exit light group including a plurality of LED exit lights; an illumination light group including a plurality of LED illumination lights; a first constant voltage unit arranged on a first power line of the output side of the main battery and converting the output voltage of the main battery into a constant voltage with a constant potential of a predetermined level and outputting the converted constant voltage; a second constant voltage unit arranged on a second power line of the output side of the sub battery and converting the output voltage of the sub battery into a constant voltage with a constant potential of a predetermined level and outputting the converted constant voltage; a main battery charging unit comparing a charging voltage of the main battery with a charging voltage of the sub battery and, if the charging voltage of the main battery is lower than that of the sub battery, electrically connecting the sub battery to the main battery to charge the main battery with the sub battery; a main battery failure detection unit configured to output a failure detection signal if the charging voltage of the main battery is lower than a predetermined reference voltage; a sub battery operating unit configured to supply a direct current voltage, output from the sub battery, to the exit light group and the illumination light group in response to the failure detection signal; and a fire detection unit configured to separate the output end of the second constant voltage unit from the illumination light group if a fire occurs. The present invention can supply a direct current power source to the exit lights and the illumination lights in the temporary firefighting facility.

Description

BATTERY OPERATING APPARATUS FOR TEMPORARY FIRE FIGHTING FACILITIES AND ITS METHOD

The present invention relates to a battery operation technology for a temporary firefighting facility, and more particularly, while always applying DC power to an induction light group and a lighting group, in case of a fire, the DC power is automatically cut off to the lighting group and DC power is automatically supplied only to the induction light group It relates to a battery operating device and method for temporary firefighting facilities that can supply DC power by a sub-battery even if the main battery fails.

In general, fires cause a lot of damage to life and property. Therefore, it is most important to extinguish the fire in the early stage and prevent it at the first place. Therefore, a fire detector, a fire transmitter, a fire alarm and a fire hydrant are basically installed in the building. It is being legislated.

Fire alarms are compulsorily installed on the ceilings or walls of new buildings and high-rise buildings in recent years. have.

However, due to the structural characteristics of modern buildings that are becoming increasingly complex and enlarged, if power is cut off due to an explosion in an actual fire or if it is difficult to identify emergency guidance lights due to smoke, etc., it is not possible to find an emergency exit quickly or even if an emergency exit is found, it is not a safe escape route. The number of fatal accidents is increasing due to the inability to exit the building.

In this way, when a fire occurs inside a building, the victims are confused and their judgment is clouded, making it difficult to find the proper location of the entrance. Therefore, the best preventive measure is to reduce human casualties by urgently moving evacuees to a safe evacuation area.

In particular, when a fire occurs in the underground space of a construction site in a state where the building is not completed, the aforementioned risk increases. In addition, if there is a combustible material among construction materials during the construction period in the underground space of the construction site, the risk increases.

Meanwhile, the installation of temporary fire-fighting facilities in fire-dangerous construction sites is compulsory in accordance with the Act on Installation, Maintenance and Safety Management of Firefighting Facilities in Korea.

The construction site subject to the installation of temporary firefighting facilities includes all specific firefighting objects subject to the building permit agreement, and according to the size, simple firefighting facilities and emergency alarm facilities as stipulated in the relevant laws must be installed.

For example, a fire management system using a temporary fire fighting device disclosed in Korean Patent Registration No. 10-1765330 includes a wired and wireless fire detector that detects the occurrence of a fire and generates a fire detection signal; a wireless fire receiver that notifies an emergency situation according to a fire detection signal received from the wireless fire detector; It is connected to a wireless fire receiver so that wireless communication is possible, and includes a wireless early warning device that transmits an emergency signal according to a fire or emergency situation.

However, the above fire management system discloses only the technology for detecting the occurrence of a fire and transmitting an emergency signal.

In addition, the fire detection and evacuation guidance system for temporary firefighting facilities at a construction site disclosed in Korean Patent Registration No. 10-1841761 includes: a main body installed in an underground space at a construction site; an emergency light panel detachably coupled to the front upper portion of the main body and provided with an emergency light to inform the outside in case of a power outage or fire; a warning light panel detachably coupled to a lower portion of the emergency light panel from the front side of the main body and having a warning light that operates together with an alarm sound during normal operation or when the emergency light is operated; an induction light panel detachably coupled to a lower portion of the warning light panel from the front of the main body and provided with an induction light that operates normally; an evacuation guidance unit connected to the main body and provided to emit a light signal along a path to be evacuated in case of fire in the underground space where the main body is installed; A fire detection unit that is detachably coupled to a lower portion of the induction light panel from the front of the main body and detects a fire in an underground space in which the main body is installed, a blackout detection unit that detects whether there is a power outage, the fire detection unit and the blackout a control panel provided with a control unit for controlling the operation of the emergency light, the warning light, and the evacuation guide unit based on the result detected by the sensing unit; and a fire extinguisher accommodating unit provided to accommodate a plurality of fire extinguishers under the control panel in the main body.

That is, the above fire detection and evacuation guidance system also provides power for emergency lights or warning lights, but a configuration for providing constant power is not disclosed.

Registered Patent No. 10-1783825 Evacuation guidance light for firefighting and its control system Registered Patent No. 10-1729521 Evacuation guidance light for firefighting and its control system Registered Patent No. 10-1765330 A mobile cart containing a temporary firefighting device and a fire management system using the same

An object of the present invention is to provide a battery operating device for a temporary firefighting facility capable of supplying DC power to an induction lamp and a lighting lamp in a temporary firefighting facility, and a method therefor.

Another object of the present invention is to provide a battery operating apparatus and method for a temporary firefighting facility capable of supplying DC power to induction lamps and lighting lamps using a sub-battery when the main battery fails.

In addition, another object of the present invention is to provide a battery operating apparatus and method for a temporary firefighting facility capable of supplying DC power to induction lamps and lighting lamps by always maximizing the charging voltage of the main battery.

The battery operating device for a temporary firefighting facility according to the first invention of the present application includes a main battery including a plurality of battery cells; a sub-battery including a plurality of battery cells; a guide light group comprising a plurality of LED guide lights; a lighting group comprising a plurality of LED lighting lamps; a first constant voltage unit disposed on a first power line on the output side of the main battery and converting the output voltage of the main battery into a constant voltage having a constant potential of a predetermined level and outputting the converted voltage; a second constant voltage unit disposed on a second power line on the output side of the sub-battery and converting the output voltage of the sub-battery into a constant voltage having a constant potential of a predetermined level and outputting the converted voltage; The charging voltage of the main battery and the charging voltage of the sub-battery are compared, and when the charging voltage of the main battery is lower than the charging voltage of the sub-battery, the sub-battery and the main battery are electrically connected to the sub-battery. a main battery charging unit for charging the main battery; a main battery failure detection unit configured to output a failure detection signal when the charging voltage of the main battery is lower than a predetermined reference voltage; a sub-battery operation unit configured to supply a DC voltage output from the sub-battery to the induction lamp group and the lighting lamp group in response to the failure detection signal; and a fire detection unit configured to separate the output terminal of the second constant voltage unit from the lighting group when a fire occurs.

Preferably, the main battery charging unit includes: a first comparator configured to receive a charging voltage of the main battery to an inverting terminal (-) and a charging voltage of the sub-battery to a non-inverting terminal (+) to output a comparison signal; a first photodiode disposed between the output of the first comparator and ground; a first phototransistor disposed between the one output terminal of the main battery and the ground, the first phototransistor being turned on by receiving the light of the first photodiode; a first relay coil disposed between the first phototransistor and ground; and a first relay switch of contact A disposed on a power line between the main battery and the sub-battery.

Preferably, the main battery failure detection unit includes: a second comparator for receiving a charging voltage of the main battery to an inverting terminal (-) and a predetermined reference voltage to a non-inverting terminal (+), and outputting a failure detection signal; and a second photodiode disposed between the output terminal of the second comparator and the ground and turned on in response to the failure detection signal to emit light.

Preferably, the sub-battery operation unit includes: a second phototransistor disposed between the output voltage terminal of the sub-battery and the ground, and turned on by receiving the light-emitting signal of the second photodiode; a second relay coil disposed between the second phototransistor and ground, and excited according to a turn-on of the second phototransistor; a second relay switch of contact A disposed between a node on the power line and a node on the second power line and closed according to the excitation of the second relay coil; and a second relay switch of contact B, which is disposed on a power line between the other side of the first relay switch of contact A and the sub-battery and is opened according to excitation of the second relay coil.

Preferably, the fire detection unit comprises: a fire detection switch arranged to apply emergency power from the emergency battery to the third photodiode in the event of a fire; a third phototransistor having one end connected to one output terminal of the main battery and turned on by receiving the light emitting signal of the third photodiode; a third relay coil disposed between the other side of the third phototransistor and the ground; and a third relay switch of contact B disposed between the output terminal of the second constant voltage unit and the input terminal of the lighting group.

In addition, the method for operating a battery for a temporary firefighting facility according to the second invention of the present application includes the steps of comparing the charging voltage of the main battery 110 and the charging voltage of the sub-battery 120 ( S210 ); When the charging voltage of the main battery 110 is lower than the charging voltage of the sub-battery 120 , the sub-battery 120 is connected to a power line between the sub-battery 120 and the main battery 110 . charging the main battery 110 (S220); Comparing the charging voltage of the main battery 110 and a reference voltage (Vref_R2) (S230); When the charging voltage of the main battery 110 is lower than the reference voltage Vref_R2, the sub-battery 120 supplies DC power to the induction lamp group 210 and the lighting lamp group 220 (S240); When the charging voltage of the main battery 110 is higher than the reference voltage Vref_R2, the main battery 110 supplies DC power to the induction lamp group 210 and the lighting lamp group 220 (S250); The fire detection switch (F-SW, 183) is turned on (S260); and the third relay coil 189 is energized, and the third relay switch 191 of the B contact responsive to the third relay coil 189 is opened, from the sub-battery 120 to the lighting group 220 and a step (S270) of cutting off the DC power supply.

According to the battery operating device for a temporary firefighting facility of the present invention, it is possible to supply DC power to the induction lamp and the lighting lamp in the temporary firefighting facility, and when the main battery fails, it is possible to supply DC power to the induction lamp and the lighting lamp by using the sub-battery, It is possible to supply DC power to induction lamps and lighting lamps by always maintaining the maximum charging voltage of the battery.

1 is a circuit diagram of a battery operating device for a temporary firefighting facility according to an embodiment of the present invention, and
2 is a flowchart of a battery operating method for a temporary firefighting facility according to an embodiment of the present invention.

Additional objects, features and advantages of the present invention may be more clearly understood from the following detailed description and accompanying drawings.

Prior to the detailed description of the present invention, the present invention can make various changes and can have various embodiments, and the examples described below and shown in the drawings are not intended to limit the present invention to specific embodiments. No, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used herein are used only to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

In addition, terms such as "...unit", "...unit", "...module", etc. described in the specification mean a unit that processes at least one function or operation, which includes hardware or software or hardware and It can be implemented by a combination of software.

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In describing the present invention, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the present invention, the detailed description thereof will be omitted.

1 is a circuit diagram of a battery operating device for a temporary firefighting facility according to an embodiment of the present invention.

The battery operating device for a temporary firefighting facility according to an embodiment of the present invention includes a main battery 110 , a sub-battery 120 , a first constant voltage unit 130 , a second constant voltage unit 140 , and a main battery charging unit 150 . , a main battery failure detection unit 160 , a sub-battery operation unit 170 , a fire detection unit 180 , and a reverse charge prevention unit 190 .

Although not shown, the main battery 110 and the sub-battery 120 are charged from commercial power through an AC/DC converter, and each includes a plurality of battery cells. Meanwhile, in FIG. 1 , the charging terminals of the main battery 110 and the sub-battery 120 are omitted.

The first constant voltage unit 130 is disposed between the main battery 110 and the induction lamp group 210 , and converts the output voltage of the main battery 110 into a constant voltage having a constant potential of a predetermined level and outputs the converted voltage. That is, the level of the output voltage of the main battery 110 is changed according to the degree of charging, and a constant voltage of a constant potential is applied to the induction lamp group 210 including a plurality of LED induction lamps 210-1, ..., 210-N. This is the configuration required to provide

The second constant voltage unit 140 is disposed between the sub-battery 120 and the lighting group 220 , and converts the output voltage of the sub-battery 120 into a constant voltage having a constant potential of a predetermined level and outputs the converted voltage. That is, the level of the output voltage of the sub-battery 120 is changed according to the degree of charging, and a constant voltage of a constant potential is applied to the lighting group 220 including the plurality of LED lighting lamps 220-1, ..., 220-N. This is the configuration required to provide Here, although the number of LED induction lamps and LED lighting lamps is all indicated as N, it does not necessarily mean the same number, and may be the same or different.

The main battery charging unit 150 compares the charging voltage of the main battery 110 with the charging voltage of the sub-battery 120 , and when the charging voltage of the main battery 110 is lower than the charging voltage of the sub-battery 120 , the sub The battery 120 and the main battery 110 are electrically connected to charge the main battery 110 .

Specifically, the main battery charging unit 150 includes a first comparator 151 , a first photodiode 153 , a first phototransistor 155 , a first relay coil 157 , and a first relay switch ( 159).

The first comparator 151 receives the charging voltage of the main battery 110 to the inverting terminal (-) and the charging voltage of the sub-battery 120 to the non-inverting terminal (+) to receive the charging voltage of the main battery 110 and When the charging voltage of the sub-battery 120 is compared and the charging voltage of the sub-battery 120 is higher than the charging voltage of the main battery 110 , a comparison signal of “H” level is output.

The first photodiode 153 is disposed between the output of the first comparator 151 and the ground, is turned on in response to the comparison signal, and emits light.

The first phototransistor 155 is disposed between the one output terminal of the main battery 130 and the ground, and is turned on by receiving the light of the first photodiode 153 .

The first relay coil 157 is disposed between the first phototransistor 155 and the ground, and is excited according to the turn-on of the first phototransistor 155 .

The first relay switch 159 of the A contact is disposed on the power line between the main battery 110 and the sub-battery 120 , and is closed in response to the excitation of the first relay coil 157 .

The operation of the main battery charging unit 150 will be described as follows.

Comparator 151 compares the charging voltage of the main battery 110 with the charging voltage of the sub-battery 120 , and when the charging voltage of the sub-battery 120 is higher than the charging voltage of the main battery 110 , comparison of “H” level output a signal.

When the first photodiode 153 is turned on in response to the comparison signal and emits light, the first phototransistor 155 receives the light of the first photodiode 153 and is turned on, and the first relay coil 157 turns on the first photodiode 157 . It is excited according to the turn-on of the transistor 155 .

As the first relay switch 159 of the contact A is closed in response to the excitation of the first relay coil 157 , the main battery 120 may be charged with the voltage charged in the sub-battery 120 .

Accordingly, the charging voltage of the main battery 110 may be maintained higher than the charging voltage of the sub-battery 120 .

The main battery failure detection unit 160 includes a second comparator 161 and a second photodiode 163 .

The second comparator 161 receives the charging voltage of the main battery 110 to the inverting terminal (-) and a predetermined reference voltage (Vref_R2) to the non-inverting terminal (+), and compares the two voltages to the main battery 110 ), when the charging voltage is lower than the predetermined reference voltage Vref_R2, a fault detection signal of “H” level is output. That is, since the main battery 110 maintains a voltage higher than the reference voltage Vref_R2 unless the main battery 110 is sufficiently discharged, the second comparator 161 outputs an “L” level. Then, when the main battery 110 fails and the output voltage of the main battery 110 is lower than the reference voltage Vref_R2, a failure detection signal of “H” level is output.

The second photodiode 163 is disposed between the output terminal of the second comparator 161 and the ground, is turned on in response to the failure detection signal, and emits light.

Specifically, the main battery failure detection unit 160 operates as follows. Basically, the charging voltage of the main battery 110 is high enough to supply a DC voltage to the induction lamp group 210 and the lighting lamp group 220 . The level is maintained, but when the main battery 110 fails, the charging voltage of the main battery 110 becomes lower than the predetermined reference voltage Vref_R2. At this time, the second comparator 161 outputs a failure detection signal of "H" level, and the second photodiode 163 is turned on in response to the failure detection signal of "H" level to emit light.

The sub-battery operation unit 170 includes a second phototransistor 171 , a second relay coil 173 , a second relay switch 177 of contact A, and a second relay switch 179 of contact B.

The second phototransistor 171 is disposed between the output voltage terminal of the sub-battery 170 and the ground, and is turned on by receiving the light emitting signal of the second photodiode 163 .

The second relay coil 173 is disposed between the second phototransistor 171 and the ground, and is excited according to the turn-on of the second phototransistor 171 .

The second relay switch 177 of the A contact is a node on the power line placed between the main battery 110 and the first constant voltage unit 130 and the power line placed between the sub battery 120 and the second constant voltage unit 140 . It is disposed between the nodes of the phase and is closed according to the excitation of the second relay coil 173 .

The second relay switch 179 of the B contact is disposed on the power line between the other side of the first relay switch 159 of the A contact and the sub-battery 120, and opens open according to the excitation of the second relay coil 173 (open)

That is, when the main battery 110 fails and the second relay coil 173 is energized, the second relay switch 179 of the B contact is opened to stop charging from the sub-battery 120 to the main battery 110 . and the second relay switch 177 of the A contact is closed, so that the sub-battery 120 supplies DC power to the induction light group 210 and the lighting light group 220 .

The fire detection unit 180 includes the emergency battery 181 , the fire detection switch 183 , the third photodiode 185 , the third phototransistor 187 , the third relay coil 189 , and the third of the B contact. A relay switch 191 is included, and when a fire is detected, the DC power supply to the lighting group 220 is cut off.

The fire detection switch 183 turns on the third photodiode 185 by applying the emergency power of the emergency battery 181 to the third photodiode 185 when a fire occurs.

When the third photodiode 185 is turned on and emits light, the third phototransistor 187 is turned on by receiving the light emission signal of the third photodiode 185 .

The third relay coil 189 is disposed between the third phototransistor 187 and the ground, and when the third phototransistor 187 is turned on, it is excited.

The third relay switch 191 of the B contact is disposed between the output terminal of the second constant voltage unit 140 and the input terminal of the lighting group 220, and when the third relay coil 189 is energized, it opens and the second constant voltage unit The output terminal of 140 and the lighting group 220 are electrically separated.

The reverse charge prevention unit 190 is disposed on a power line in which the second relay switch 177 of the A contact is disposed between the main battery 110 and the sub-battery 120, and the sub-battery 120 is connected to the first and When discharging to the second constant voltage units 130 and 140 , the current is prevented from flowing to the main battery 110 .

2 is a flowchart of a battery operating method for a temporary firefighting facility according to an embodiment of the present invention.

Comparing the charging voltage of the main battery 110 and the charging voltage of the sub-battery 120 (S210), if the charging voltage of the main battery 110 is lower than the charging voltage of the sub-battery 120, the sub-battery 120 The sub-battery 120 charges the main battery 110 by connecting the power line between the and the main battery 110 (S220).

Comparing the charging voltage of the main battery 110 and a predetermined reference voltage (Vref_R2) (S230), if the charging voltage of the main battery 110 is lower than the predetermined reference voltage (Vref_R2), the sub-battery 120 is an induction light DC power is supplied to the group 210 and the lighting group 220 (S240), and when the charging voltage of the main battery 110 is higher than a predetermined reference voltage (Vref_R2), the main battery 110 is the induction lamp group 210 And DC power is supplied to the lighting group 220 (S250).

After that, when the fire detection switch (F-SW, 183) is turned on, the third relay coil 189 is excited, and the third relay switch 191 of the B contact responsive to the third relay coil 189 is opened. DC power supply from the sub-battery 120 to the lighting group 220 is cut off (S270).

The embodiments described in this specification and the accompanying drawings are merely illustrative of some of the technical ideas included in the present invention. Therefore, since the embodiments disclosed in the present specification are for explanation rather than limitation of the technical spirit of the present invention, it is obvious that the scope of the technical spirit of the present invention is not limited by these embodiments. Modifications and specific embodiments that can be easily inferred by those skilled in the art within the scope of the technical idea included in the specification and drawings of the present invention should be interpreted as being included in the scope of the present invention.

110: main battery
120: sub battery
130: first constant voltage unit
140: second constant voltage unit
150: main battery charging unit
160: main battery failure detection unit
170: sub battery operation unit
180: fire detection unit
190: reverse charge prevention unit

Claims (6)

a main battery including a plurality of battery cells;
a sub-battery including a plurality of battery cells;
a guide light group comprising a plurality of LED guide lights;
a light group comprising a plurality of LED lights;
a first constant voltage unit disposed on a first power line on the output side of the main battery and converting the output voltage of the main battery into a constant voltage having a constant potential of a predetermined level and outputting the converted voltage;
a second constant voltage unit disposed on a second power line on the output side of the sub-battery and converting the output voltage of the sub-battery into a constant voltage having a constant potential of a predetermined level and outputting it;
The charging voltage of the main battery and the charging voltage of the sub-battery are compared, and when the charging voltage of the main battery is lower than the charging voltage of the sub-battery, the sub-battery and the main battery are electrically connected to the sub-battery. a main battery charging unit for charging the main battery;
a main battery failure detection unit configured to output a failure detection signal when the charging voltage of the main battery is lower than a predetermined reference voltage;
a sub-battery operation unit configured to supply a DC voltage output from the sub-battery to the induction lamp group and the lighting lamp group in response to the failure detection signal; and
and a fire detection unit configured to separate the output terminal of the second constant voltage unit from the lighting group when a fire occurs,
The main battery charging unit,
a first comparator for receiving a charging voltage of the main battery to an inverting terminal (-) and a charging voltage of the sub-battery to a non-inverting terminal (+) to output a comparison signal;
a first photodiode disposed between the output of the first comparator and ground;
a first phototransistor disposed between one output terminal of the main battery and a ground, the first phototransistor being turned on by receiving the light of the first photodiode;
a first relay coil disposed between the first phototransistor and ground; and
A first relay switch of contact A disposed on a power line between the main battery and the sub-battery
A battery operated device for temporary firefighting facilities comprising a.
delete The method according to claim 1, The main battery failure detection unit,
a second comparator for receiving a charging voltage of the main battery to an inverting terminal (-) and a predetermined reference voltage to a non-inverting terminal (+), and outputting a failure detection signal; and
A second photodiode disposed between the output terminal of the second comparator and the ground and turned on in response to the failure detection signal to emit light
Battery-operated device for temporary firefighting facilities comprising a.
The method according to claim 3, The sub-battery operation unit,
a second phototransistor disposed between the output voltage terminal of the sub-battery and the ground and turned on by receiving the light emitting signal of the second photodiode;
a second relay coil disposed between the second phototransistor and ground and excited according to a turn-on of the second phototransistor;
a second relay switch of contact A disposed between a node on the power line and a node on the second power line and closed according to excitation of the second relay coil; and
A second relay switch of contact B, which is disposed on the power line between the other side of the first relay switch of contact A and the sub-battery, and opens according to excitation of the second relay coil
A battery operated device for temporary firefighting facilities comprising a.
The method according to claim 4, The fire detection unit,
a fire detection switch disposed to apply emergency power from the emergency battery to the third photodiode in case of fire;
a third phototransistor having one end connected to one output terminal of the main battery and turned on by receiving the light emitting signal of the third photodiode;
a third relay coil disposed between the other side of the third phototransistor and the ground;
A third relay switch of contact B disposed between the output terminal of the second constant voltage unit and the input terminal of the lighting group
A battery operated device for temporary firefighting facilities comprising a.
Comparing the charging voltage of the main battery 110 and the charging voltage of the sub-battery 120 (S210);
When the charging voltage of the main battery 110 is lower than the charging voltage of the sub-battery 120 , the sub-battery 120 is connected to a power line between the sub-battery 120 and the main battery 110 . charging the main battery 110 (S220);
Comparing the charging voltage of the main battery 110 and a reference voltage (Vref_R2) (S230);
When the charging voltage of the main battery 110 is lower than the reference voltage (Vref_R2), the sub-battery 120 supplies DC power to the induction lamp group 210 and the lighting lamp group 220 (S240);
When the charging voltage of the main battery 110 is higher than the reference voltage Vref_R2, the main battery 110 supplies DC power to the induction lamp group 210 and the lighting lamp group 220 (S250);
The fire detection switch (F-SW, 183) is turned on (S260); and
The third relay coil 189 is energized, and the third relay switch 191 of the B contact responsive to the third relay coil 189 is opened, so that the sub-battery 120 to the lighting group 220 is Step in which the DC power supply is cut off (S270)
Battery operation method for temporary firefighting facilities comprising a.

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