KR20240071007A - Rechargeable battery safety cabinet with system to prevent and extinguish the fire - Google Patents

Abstract

The present invention relates to a secondary battery safety cabinet equipped with a fire prevention and response system, particularly a housing provided with an exhaust port; a shelf installed inside the housing and on which the secondary battery is placed; a gas sensor installed in the housing to detect gas emitted from the secondary battery; A control unit that controls to increase the rotational speed of the blowing fan mounted on the exhaust side when the gas concentration value measured by the gas sensor exceeds a preset standard value, and is configured to include a flammable gas from the inside of the housing from the beginning. It can be discharged quickly, preventing or delaying a fire, and is also effective in detecting and responding to thermal runaway of secondary batteries in advance.

Description

Secondary battery safety cabinet equipped with a fire prevention and response system {Rechargeable battery safety cabinet with system to prevent and extinguish the fire}

The present invention relates to a safety cabinet, and particularly to a secondary battery safety cabinet equipped with a fire prevention and response system for secondary batteries stored therein.

As interest in the rising price of energy sources and environmental pollution due to the depletion of fossil fuels increases, the demand for eco-friendly alternative energy sources is becoming an essential element for the future.

Accordingly, research on various power generation technologies such as nuclear power, solar power, wind power, and tidal power continues, and interest in power storage devices to use the energy produced in this way more efficiently is also increasing.

Moreover, as demand for mobile devices and electric vehicles increases, the demand for batteries as an energy source is rapidly increasing, and accordingly, much research is being conducted on batteries that can meet various needs.

In particular, interest in lithium-ion-based secondary batteries, which have advantages in energy density, discharge voltage, and output stability, is increasing. However, lithium-ion batteries are very reactive and have high explosive power, sometimes causing explosion accidents.

Therefore, it is very important to store secondary batteries safely in places that conduct research and experiments on secondary batteries or in places that perform charging and discharging on a large scale. However, there is still no way to detect fires in advance or to prevent fires from occurring when storing secondary batteries. There is no storage box provided that can quickly extinguish a fire.

Registered Patent 10-2239579

The present invention was developed to solve the problems of the prior art described above, and is capable of detecting the gas emitted when the electrolyte is decomposed due to damage to the secondary battery, overcharging, long-term use, impact, etc., and responding in advance before thermal runaway of the secondary battery occurs. The purpose is to provide a safety cabinet for secondary batteries.

In addition, the present invention prevents fire by quickly detecting fire in advance by installing a gas sensor and a temperature sensor at an optimal location, and effectively extinguishes the fire when it occurs, causing additional damage due to the secondary battery exploding due to the fire. The purpose is to provide a secondary battery safety cabinet that can prevent damage.

A secondary battery safety cabinet equipped with a fire prevention and response system according to the present invention to solve the above problems includes a housing with an exhaust port, a shelf installed inside the housing and on which the secondary battery is mounted, and installed in the housing. A gas sensor detects the gas generated from the secondary battery, and when the gas concentration value measured by the gas sensor exceeds the first preset standard value, the rotation speed of the blowing fan is controlled to increase to remove the flammable gas inside the cabinet. Fires can be prevented or delayed by discharging them quickly.

At this time, the control unit may control the rotation of the blowing fan to stop when the gas concentration value measured by the gas sensor exceeds a preset second reference value.

In addition, the housing further includes a temperature sensor that measures heat generated from the secondary battery and a damper that opens and closes the exhaust port, and the control unit detects that the temperature value measured by the temperature sensor exceeds a preset third standard value. In addition to controlling the damper to close, a fire can be prevented or extinguished by supplying a fire extinguishing agent to the shelf.

In addition, it further includes an alarm system that notifies a fire alarm to the outside of the housing or to a mobile terminal or fire department, and the control unit sets the gas concentration value and temperature value measured by the gas sensor and the temperature sensor to a preset first reference value. If it exceeds the third standard value, an alarm signal can be transmitted to the alarm system.

Additionally, a temperature sensor connected to the control unit is installed on the bottom of the shelf in contact with the secondary battery.

Additionally, a heat conductive band in contact with the temperature sensor and the secondary battery is provided on the bottom of the shelf.

Meanwhile, an explosion-proof damper is installed in the housing, which rotates outward when a certain pressure is applied to form a ventilation hole.

Here, the explosion-proof damper includes a cover whose upper end is rotatably installed in the housing to open and close the ventilation hole; a movable piece provided to protrude from the bottom of the cover toward the inside of the housing and rotated together with the cover; It consists of a magnet provided on the movable piece and detachable from the fixed piece provided in the housing.

In addition, the movable piece includes a rear vertical piece extending downward from the bottom of the cover, a horizontal piece extending from the rear vertical piece to the inside of the housing, and a front piece extending upward from an end of the horizontal piece and where the magnet is installed. Consisting of vertical pieces; The fixing piece consists of a horizontal piece extending from the rear of the housing into the housing, and a vertical piece extending upward from an end of the horizontal piece to which the magnet is attached and detachable.

Meanwhile, the secondary battery has a gas discharge hole formed on the upper surface, and is placed on the upper surface of the shelf with a temperature sensor stored inside a safety box provided on the bottom.

Here, a quick coupler for one-touch coupling is provided on the rear of the safe and the rear of the housing, and when the safe and the housing are connected by the quick coupler, the temperature sensor is electrically connected to the control unit.

The secondary battery safety cabinet equipped with the fire prevention and response system of the present invention configured as described above can quickly remove flammable gas inside the storage box by increasing the rotation speed of the blowing fan when gas generated from the secondary battery is detected. This has the advantage of preventing fire or delaying the occurrence of fire by preventing concentration of flammable gas inside the storage box.

In addition, the present invention can accurately detect fire precursors by detecting flammable volatile organic compound (VOC) gases among various gases generated from secondary batteries, and in particular, by installing a VOC sensor on the exhaust side, it can detect flammable volatile organic compound (VOC) gases with a minimum number of sensors. There is an advantage in being able to quickly detect topic precursors.

In addition, there is an advantage of being able to prevent fires in advance or minimize damage from fire outbreaks by responding differently to fire alarms, prevention, and suppression depending on the concentration of VOC gas detected by the VOC sensor.

In addition, when flammable gas is concentrated inside the cabinet and reaches the explosion limit concentration, there is an advantage in preventing an explosion accident by using an explosion-proof damper that forcibly discharges the flammable gas to the outside.

Figure 1 is a diagram showing the external appearance of a secondary battery safety cabinet equipped with a fire prevention and response system according to the present invention.
Figure 2 is a cross-sectional view of the secondary battery safety cabinet shown in Figure 1.
Figure 3 is a diagram showing the temperature sensor and heat conduction band installed in the secondary battery safety cabinet shown in Figure 1.
Figure 4 is a diagram showing the VOC sensor and blower fan of the secondary battery safety cabinet shown in Figure 1.
Figure 5 is a diagram showing the safety of the secondary battery safety cabinet shown in Figure 1 installed on the upper surface of the shelf.
Figure 6 is a diagram showing an explosion-proof damper installed in the secondary battery safety cabinet shown in Figure 1.
FIG. 7 is a block diagram showing the connection relationship of each component centered on the control unit of the secondary battery safety cabinet shown in FIG. 1.
FIG. 8 is a flow chart showing the control flow according to gas measurement and temperature measurement centered on the control unit of the secondary battery safety cabinet shown in FIG. 7.

Hereinafter, an embodiment of a secondary battery safety cabinet equipped with a fire prevention and response system according to the present invention will be described in detail with reference to the attached drawings.

Figure 1 is a diagram showing the external appearance of a secondary battery safety cabinet equipped with a fire prevention and response system according to the present invention, and Figure 2 is a cross-sectional view of the secondary battery safety cabinet shown in Figure 1.

And, Figure 3 is a diagram showing the temperature sensor and heat conduction band installed in the secondary battery safety cabinet shown in Figure 1, and Figure 4 is a diagram showing the VOC sensor and blowing fan of the secondary battery safety cabinet shown in Figure 1. am.

In addition, Figure 5 is a diagram showing the safety installed on the upper surface of the shelf of the secondary battery safety cabinet shown in Figure 1, and Figure 6 is a diagram showing an explosion-proof damper installed in the secondary battery safety cabinet shown in Figure 1.

Meanwhile, FIG. 7 is a block diagram showing the connection relationship of each component centered on the control unit of the secondary battery safety cabinet shown in FIG. 1.

When the secondary battery is damaged, overcharged, used for a long time, or shocked, the electrolyte inside the secondary battery decomposes and vaporizes, releasing gas. The released gas is flammable and creates a flammable atmosphere around it. If this situation continues, the temperature inside the secondary battery rises rapidly and a large amount of heat energy is released, causing thermal runaway, which leads to a fire. The present invention can prevent or delay the occurrence of thermal runaway by detecting and quickly discharging such combustible gases (especially organic compound (VOC) gases), and in particular, by installing a VOC sensor on the exhaust port side, the fire precursor phenomenon can be prevented with a minimum number of sensors. It is designed to prevent fires in advance or minimize damage from fire outbreaks by quickly detecting and responding differently to fire alarms, prevention, and suppression depending on the concentration of VOC gas detected by the VOC sensor.

For this purpose, the secondary battery safety cabinet equipped with the fire prevention and response system of the present invention includes a housing 10 with an exhaust port 13, a shelf installed inside the housing 10 and on which the secondary battery B is mounted ( 20), a gas sensor 30 installed in the exhaust port 13, a control unit 40 connected wirelessly or wired to the gas sensor 30, and a fire extinguishing agent that supplies fire extinguishing agent to the shelf 20. It is configured to include a supply unit (50).

The housing 10 has a receiving space inside, and a door 11 is provided on the front. A fireproof insulating material can be installed to a certain thickness inside the housing 10 to prevent thermal deformation due to flame, etc.

Additionally, an intake port 12 and an exhaust port 13 are provided on the upper surface of the housing 10.

The intake port 12 is used as a passage for introducing air from outside the housing 10 into the inside, and the exhaust port 13 is used to forcefully exhaust the air inside the housing 10 to the outside. Therefore, a blowing fan 14 for forced exhaust is installed inside the exhaust port 13.

In addition, the intake port 12 and the exhaust port 13 can be respectively connected to the intake vent and exhaust vent provided on the ceiling of the indoor space where the safety cabinet of the present invention is installed.

Therefore, when a fire occurs inside the housing 10, flames or hot air inside the housing 10 are not discharged into the indoor space. Conversely, even when a fire occurs in the indoor space outside the housing 10, external flames or hot air are not discharged into the indoor space. Air cannot flow into the housing 10.

At this time, a damper (not shown) that regulates the flow of air may be installed on the intake port 12 and exhaust port 13 sides. The damper is installed in the housing 10 through a fuse that melts at a certain temperature. Accordingly, the damper maintains the intake port 12 and the exhaust port 13 in an open state under normal circumstances, but operates so that the intake port 12 and the exhaust port 13 are closed when a fire occurs.

Meanwhile, an explosion-proof damper 80 may be installed in the housing 10, which rotates outward when a certain pressure is applied to form a ventilation hole 10a.

To elaborate, if thermal runaway of the secondary battery occurs inside the housing 10 and flammable gas fills the inner space of the housing 10, it may lead to an explosion. To prevent such an explosion, the rear of the housing 10 is normally The ventilation hole (10a) formed on the side is sealed, and when the internal pressure of the housing (10) becomes more than a certain pressure (limit pressure just before explosion) due to the flammable gas being concentrated inside, the ventilation hole (10a) is opened to prevent flammability. An explosion-proof damper 80 that discharges gas out of the housing 10 is installed in the housing 10 (S70 and S70 in FIG. 9).

This explosion-proof damper 80 includes a cover 81 whose upper end is rotatably installed on the housing 10, a movable piece 82 integrally formed at the bottom of the cover 81, and the movable piece 82. It consists of a provided magnet (83).

The cover 81 opens and closes the ventilation hole 10a formed at the rear of the housing 10, and its upper end is rotatably installed on the bracket 15 provided at the upper part of the ventilation hole 10a. ) is centered around.

The movable piece 82 is provided to protrude from the bottom of the cover 81 toward the inside of the housing 10 and rotates together with the cover 81.

In more detail, the movable piece 82 includes a rear vertical piece 82a extending downward from the bottom of the cover 81, and a horizontal piece extending from the rear vertical piece 82a toward the inside of the housing 10. It consists of (82b) and a front vertical piece (82c) extending upward from the end of the horizontal piece (82b) and on which a magnet 83 is installed.

Therefore, the overall shape of the movable piece 82 has a cross-sectional shape similar to the Korean letter ‘ㄷ’ with an open top.

The magnet 83 is provided on the front vertical piece 82c of the movable piece 82, and is attached and detachable to the fixed piece 16 provided in the housing 10.

The fixing piece 16 includes a horizontal piece 16a extending from the rear of the housing 10 into the housing 10, and extending upward from the end of the horizontal piece 16a, so that the magnet 83 is detachable. It consists of a vertical piece (16b). Here, the fixed piece 16 can be considered to function as a stopper in that it prevents the cover 81, the movable piece 82, and the magnet 83 from further entering the housing 10.

The shelves 20 are installed one by one at regular intervals in the vertical direction inside the housing 10, and are provided to be able to slide in and out of the housing 10. A plurality of secondary batteries (B) are stored on the upper surface of the shelf (20). This shelf 20 may be a shelf recessed to a depth so that the secondary battery B can be submerged by supplying a fire extinguishing agent, or may be in the form of a drawer.

Here, a temperature sensor 21 connected wirelessly or wired to the control unit 40 is installed on the bottom of the shelf 20.

The temperature sensor 21 provided on the bottom of the shelf 20 is in contact with the secondary battery B seated on the shelf 20, and measures the temperature generated by the secondary battery B to control the temperature sensor 21. Transmits information about measured values.

In addition, the bottom surface of the shelf 20 is provided with a temperature sensor 21 and a heat conduction band 22 in contact with the secondary battery B. To elaborate, a groove corresponding to the height of the temperature sensor 21 is formed at a point on the bottom of the shelf 20 where the temperature sensor 21 is installed, the temperature sensor 21 is installed inside the groove, and a heat conduction band ( A groove with a thickness corresponding to the heat-conducting band 22 is formed on the bottom surface of the shelf 20 where 22) is installed, and the heat-conducting band 22 is installed in the groove to detect the temperature sensor 21 and the temperature sensor 21 on the shelf 20. Ensure that the heat conductive band 22 does not protrude and is in contact with the secondary battery B.

If the heat conduction band 22 is provided on the bottom of the shelf 20 in this way, when the secondary battery B is placed on the bottom of the shelf 20, even if it is placed at a point away from the temperature sensor 21, the heat conduction band 22 and Since the secondary battery (B) can be contacted, heat generated from the secondary battery (B) can be quickly transferred to the temperature sensor 21.

Here, the heat conduction band 22 is preferably made of a metal material with excellent heat conductivity.

The gas sensor 30 may be a VOC sensor that detects the concentration of flammable volatile organic compound (VOC) gas among gases emitted from a secondary battery. This gas sensor 30 is installed in the exhaust port 13 of the housing 10, detects the VOC gas concentration value discharged through the exhaust port 13, and then transmits the detected VOC gas concentration value to the control unit 40 ( S10 in Figure 9).

If the gas concentration value (e.g., VOC concentration value) measured by the gas sensor 30 exceeds the first reference value preset in the control unit 40, the rotation speed of the blowing fan 14 installed in the exhaust port 13 is increased. It is controlled to quickly discharge the flammable gas inside the housing 10 to the outside (S20 and S30 in FIG. 9). This can eliminate or minimize the flammable atmosphere inside the cabinet, preventing or delaying a fire.

At this time, when gas is detected inside the housing 10, it is desirable to immediately increase the rotational speed of the blowing fan 14 to quickly discharge the flammable gas from the inside of the housing 10 from the beginning. Therefore, the first reference value is the gas concentration value at the initial point when gas is generated from the secondary battery and serves as a standard for evaluating the measurement value measured by the gas sensor 30.

Meanwhile, the control unit 40 may control the rotation speed of the blowing fan 14 differently depending on the gas concentration value measured by the gas sensor 30. That is, it is desirable to increase the rotation speed of the blowing fan 14 in proportion to the gas concentration value.

At this time, if the blowing fan 14 is a general fan rather than an explosion-proof fan, an increase in rotation speed may cause sparks, causing fire and explosion along with highly flammable gas. Therefore, in the case of a general blowing fan, the gas sensor 30 needs to stop the rotation of the blowing fan 14 above a certain concentration value.

For this purpose, in the present invention, when the gas concentration value measured by the gas sensor 30 exceeds the second reference value preset in the control unit 40, the rotation of the blowing fan 14 is controlled to stop (S40 and S50 in FIG. 9). .

Here, the second reference value is a value maintained at a gas concentration below the limit of fire or explosion due to spark generation and is a standard value for evaluating the measured value measured by the gas sensor 30.

Meanwhile, when the temperature value measured by the temperature sensor 21 exceeds the third reference value preset in the control unit 40, the control unit 40 operates the fire extinguishing agent supply unit 50 to place the shelf (B) on which the secondary battery (B) is placed. 20) Supply fire extinguishing agent above. This allows the fire to be quickly extinguished (S80 and S90 in FIG. 9).

Here, the third reference value is the temperature value just before thermal runaway occurs due to a rapid increase in temperature inside the secondary battery and the release of a large amount of heat energy, and is a standard value for evaluating the measured value measured by the temperature sensor 21.

Meanwhile, the present invention provides an alarm that issues an alarm when the gas concentration value measured by the gas sensor 30 exceeds the first or second reference value or the temperature value measured by the temperature sensor 21 exceeds the third reference value. A system 60 is provided, and the alarm system 60 notifies the portable terminal 61 or the fire department 62.

To elaborate, first to third reference values are set in the control unit 40, and if the value measured by the gas sensor 30 or the temperature sensor 21 exceeds the first, second, or third reference values, In this case, an alarm is sent to the surrounding area through the alarm system 60, and this fact is notified to a specific person's mobile terminal 61 or the fire department 62 through a communication network.

The control unit 40 may be installed on one side of the housing 10, or may be installed at a specific point of a building that is distant from the housing 10. This control unit 40 is connected wirelessly or wired to the gas sensor 30 and the temperature sensor 21 installed on the shelf 20, and receives the temperature value measured by the temperature sensor 21 and also transmits the temperature value measured by the gas sensor 30. ) receives the measured gas concentration values, and compares each reference value for these measured values to determine whether gas is generated from the secondary battery inside the housing 10, whether there is a risk of fire or explosion due to concentration of gas, and whether a fire occurs. can be judged.

If a fire occurs in the secondary battery (B) placed on the shelf (20), the fire extinguishing agent supply unit 50 supplies fire extinguishing agent to the shelf and causes the secondary battery (B) to be submerged in the fire extinguishing agent to quickly extinguish the fire. It is for this purpose.

This fire extinguishing agent supply unit 50 includes a fire extinguishing agent tank 51, a main pipe 52 connected to the fire extinguishing agent tank 51, a plurality of branch pipes 53 branching from the main pipe 52, and , It is composed of a plurality of valves 54 that respectively open and close the plurality of branch pipes 53, and a plurality of nozzles 55 provided in each of the plurality of branch pipes 53.

The fire extinguishing agent tank 51 is installed at the top of the inside of the housing 10 or on the outside of the housing 10 and supplies the fire extinguishing agent stored inside to the main pipe 52.

The main pipe 52 has one end connected to the fire extinguishing agent tank 51 and the other end extends downward to the housing 10.

The branch pipes 53 are located on the upper side of a plurality of shelves 20 spaced apart in the vertical direction inside the housing 10.

The valve 54 is automatically operated by a control signal from the control unit 40 to open and close the branch pipe 53 installed at the connection between the main pipe 52 and the branch pipe 53, thereby allowing the inside of the branch pipe 53. Controls the flow of incoming fire extinguishing agent. Therefore, when the valve 54 is opened according to a signal from the control unit 40, the fire extinguishing agent stored in the fire extinguishing agent tank 51 flows into the branch pipe 53 through the main pipe 52, and the valve 54 is closed. When this happens, the fire extinguishing agent cannot flow into the branch pipe (53).

The nozzle 55 is provided at least one branch pipe 53 disposed above the shelf 20 and sprays the fire extinguishing agent provided from the fire extinguishing agent tank 51 toward the shelf 20 when the valve 54 is opened. do. The secondary battery (B) seated on the shelf 20 is submerged in the fire extinguishing agent by the sprayed fire extinguishing agent.

Meanwhile, the secondary battery (B) can be stored by being placed on the upper surface of the shelf 20 as described above, but it can also be stored on the upper surface of the shelf 20 while being stored inside a separate, small safety box 70. there is.

The safety box 70 has a gas discharge hole 71 formed on its upper surface. Therefore, if a fire occurs in the secondary battery (B) inside the safety box (70) and gas is generated, the gas is discharged through the gas discharge hole (71) and the gas concentration value is measured by the gas sensor (30). The gas concentration value is transmitted to the control unit 40.

In addition, a temperature sensor 72 is provided on the bottom of the safety box 70, and a quick coupler 73 that is one-touch coupled is provided on the rear of the safety box 70 and the rear of the housing 10. When the safety box 70 and the housing 10 are connected by ), the temperature sensor 72 is connected wirelessly or wired to the control unit 40. Therefore, the temperature value measured by the temperature sensor 72 is transmitted to the control unit 40.

13: exhaust port 14: blowing fan
15: Bracket 16: Fixed piece
16a: horizontal piece 16b: vertical piece
20: shelf 21; temperature Senser
22: heat conduction band 30: gas sensor
40: Control unit 50: Fire extinguishing agent supply unit
51: Fire extinguishing agent tank 52: Main pipe
53: branch pipe 54: valve
55: nozzle 60: alarm system
61: Mobile terminal 62: Fire department
70: Safe 71: Gas discharge hole
72: Temperature sensor 80: Explosion proof damper
81: cover 82: movable piece
82a: rear vertical piece 82b: horizontal piece
82c: Front vertical piece 83: Magnet
B: secondary battery

Claims (15)

A housing (10) equipped with an exhaust port (13);
A shelf 20 installed inside the housing 10 and on which the secondary battery B is placed;
A gas sensor 30 installed in the housing 10 to detect gas generated from the secondary battery B; and
A control unit 40 that controls to increase the rotational speed of the blower fan 14 when the gas concentration value measured by the gas sensor 30 exceeds a preset first reference value. Secondary battery safety cabinet equipped with prevention and response system.
In claim 1,
The control unit 40,
A secondary battery equipped with a fire prevention and response system, characterized in that it controls to stop rotation of the blower fan (14) when the gas concentration value measured by the gas sensor (30) exceeds a preset second reference value. Safety cabinet.

In claim 1,
The housing 10 further includes a damper that opens and closes the exhaust port 13 side,
A secondary battery safety cabinet equipped with a fire prevention and response system, wherein the damper maintains the exhaust port 13 in an open state in normal times and operates to close the exhaust port 13 when fire occurs.
In claim 3,
The control unit 40,
A fire prevention and response system that can prevent or extinguish a fire by supplying a fire extinguishing agent to the shelf 20 when the temperature value measured by the temperature sensor 30 exceeds a preset third standard value. Secondary battery safety cabinet provided.
In claim 3,
It further includes an alarm system (60) that notifies a fire alarm to the outside of the housing (10) or to a mobile terminal (61) or fire department (62),
The control unit 40 transmits an alarm signal to the alarm system 60 when the measured value measured by the gas sensor 30 or the temperature sensor 30 exceeds the preset first to third reference values. A secondary battery safety cabinet equipped with a fire prevention and response system.
The method according to any one of claims 1 to 5,
The gas sensor (30) is a secondary battery safety cabinet equipped with a fire prevention and response system, characterized in that it is installed on the exhaust port (13) side.
The method according to any one of claims 1 to 6,
A secondary battery safety cabinet equipped with a fire prevention and response system, wherein the gas sensor 30 is a VOC sensor.
In claim 1,
A secondary battery safety cabinet equipped with a fire prevention and response system, characterized in that a temperature sensor 21 connected to the control unit 40 is installed on the bottom of the shelf 20 in contact with the secondary battery B. .
In claim 8,
A secondary battery safety cabinet equipped with a fire prevention and response system, characterized in that the bottom surface of the shelf (20) is provided with a heat conductive band (22) in contact with the temperature sensor (21) and the secondary battery (B).
In claim 1,
A secondary battery safety cabinet equipped with an explosion fire prevention and response system, characterized in that an explosion-proof damper (80) is installed in the housing (10), which rotates outward when a certain pressure is applied to form a ventilation hole (10a).
In claim 10,
The explosion-proof damper 80 includes a cover 81 whose upper end is rotatably installed on the housing 10 to open and close the ventilation hole 10a;
A movable piece 82 is provided to protrude from the bottom of the cover 81 toward the inside of the housing 10 and rotates together with the cover 81;
A secondary battery safety cabinet equipped with a fire prevention and response system, characterized in that it consists of a magnet (83) provided on the movable piece (82) and detachable from the fixed piece (16) provided in the housing (10).
In claim 11,
The movable piece 82 includes a rear vertical piece 82a extending downward from the bottom of the cover 81, and a horizontal piece 82b extending from the rear vertical piece 82a toward the inside of the housing 10, It is formed to extend upward from the end of the horizontal piece (82b) and consists of a front vertical piece (82c) on which the magnet (83) is installed;
The fixing piece 16 includes a horizontal piece 16a extending from the rear of the housing 10 into the housing 10, and extending upward from an end of the horizontal piece 16a so that the magnet 83 is provided. A secondary battery safety cabinet equipped with a fire prevention and response system, characterized in that it consists of a detachable vertical piece (16b).
In claim 1,
The secondary battery (B) has a gas discharge hole 71 formed on the upper surface, and is seated on the upper surface of the shelf 20 with a temperature sensor 72 stored inside a safety box 70 provided on the bottom. A secondary battery safety cabinet equipped with a fire prevention and response system.
In claim 13,
A quick coupler 73 that is one-touch coupled is provided on the rear of the safety box 70 and the rear of the housing 10, and when the safety box 70 and the housing 10 are connected by the quick coupler 73, the temperature A secondary battery safety cabinet equipped with a fire prevention and response system, wherein the sensor 72 is electrically connected to the control unit 40.
In claim 1,
The shelf (20) is a secondary battery safety cabinet equipped with a fire prevention and response system, characterized in that the shelf (20) is recessed to a certain depth or in the form of a drawer so that the secondary battery (B) can be submerged by a fire extinguishing agent.

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