KR102239579B1 - Fire suppression system in a secondary battery storage rack - Google Patents

Abstract

The present invention relates to a fire suppression system provided in a secondary battery storage rack and, more specifically, to a fire suppression system provided in a secondary battery storage rack, which can monitor, in real time, the secondary battery storage rack in which secondary batteries are stored, and can drop secondary batteries, in which a fire has occurred, among the secondary batteries stored in the secondary battery storage rack to a fire extinguishing space located at a lower end of the secondary battery storage rack to quickly suppress an initial fire, thereby minimizing damage due to the fire. To this end, the fire suppression system comprises: a fire extinguishing unit disposed at a lower end of a secondary battery storage rack having a plurality of accommodating spaces for accommodating secondary batteries, and divided into a plurality of fire extinguishing spaces; a salt water supply unit for supplying salt water to the fire extinguishing spaces; a fire detection unit including a plurality of sensors arranged to monitor the accommodating spaces of the secondary battery storage rack; and a cover disposed on the outside of the secondary battery storage rack to form a passage through which the secondary batteries, in which the fire has occurred, move.

Description

Fire suppression system in a secondary battery storage rack

The present invention relates to a fire suppression system provided in a rack for storing secondary batteries, and more particularly, to monitor a rack in which secondary batteries are stored in real time, and a secondary battery in which a fire occurs among secondary batteries stored in the rack. It relates to a fire suppression system provided in a secondary battery storage rack capable of minimizing the occurrence of damage caused by fire by dropping into a fire extinguishing space disposed at the bottom of the rack to quickly suppress the initial fire.

In general, a secondary battery is a battery that can be used repeatedly through a discharge that converts chemical energy into electrical energy and a charging process in the reverse direction, and the types include nickel-cadmium (Ni-Cd) batteries, nickel-hydrogen (Ni-MH) batteries. ) Batteries, lithium-metal batteries, lithium-ion (Ni-Ion) batteries, and lithium-ion polymer batteries.

Such a secondary battery is composed of a positive electrode, a negative electrode, an electrolyte, and a separator, and stores and generates electricity by using a voltage difference between different positive and negative materials. The manufacturing method consists of laminating a first separator, a negative electrode plate, a second separator, and a positive electrode plate, winding them several times to provide an electrode assembly, sealing the electrode assembly to a case, and injecting an electrolytic nucleus into the case.

Meanwhile, in the process of charging or discharging and aging at high temperature in the secondary battery activation process during the manufacturing process of the secondary battery, there is a problem that a fire occurs due to the characteristics of the process.

In the event of a fire in the secondary battery manufacturing process, not only the product loss due to the fire, but also the cost and period of re-installation of the manufacturing process after the fire accumulates. There is an urgent need for suppression measures.

In the conventional fire suppression system installed in the secondary battery manufacturing process, the secondary battery in which the fire has occurred is initially extinguished through the fire extinguishing equipment provided in the stacker crane, and then the secondary battery is installed in the factory where the manufacturing process is placed. It was a system for dropping into a salt water container.

In such a conventional fire suppression system, there is a problem that the fire of the secondary battery spreads to the stacker crane while the stacker crane moves the secondary battery in which the fire occurred and the stacker crane is burned out, and the time to move the secondary battery to the salt water container Because of this necessity, there is a problem in that the secondary battery is burnt down while moving to the salt water tank.

Recently, a system has been proposed in which a stacker crane sprays water through a sprinkler to a tray in which a fired secondary battery or a secondary battery is placed without moving the fired secondary battery, thereby extinguishing a fire.

The system that extinguishes the initial fire by spraying water through such a sprinkler needs to be sprayed continuously until the secondary battery is completely burned, which causes the facilities placed around the secondary battery where the fire occurred to be flooded and damage the facility. And there is a problem in that the recovery period is prolonged after the operation is stopped.

In addition, when general water is used to extinguish a fire in the secondary battery, there is a problem in that it is difficult to completely burn out due to the characteristics of the material constituting the secondary battery.

Therefore, the fire extinguishing liquid supplied to the sprinkler can completely extinguish the fire that occurred in the secondary battery only when electrolytic salt water is used.If the salt water is stored at all times, there is a problem that the sprinkler or pipe is corroded due to the evaporation of the salt water. Because salt water must be supplied to the fire location quickly, a large-capacity pump is required, and there is a problem in that the cost for managing and maintaining it is increased.

Korean Patent Registration No. 10-1400143 (published on September 19, 2012)

The present invention has been proposed to solve the above problems, and a secondary battery in which a fire has occurred is dropped from a storage rack, and a fire extinguishing space in which salt water is stored is provided at the bottom of the rack to completely eliminate the fire of the dropped secondary battery. It is an object of the present invention to provide a fire suppression system provided in a secondary battery storage rack that can minimize damage due to fire by enabling suppression.

In addition, by storing salt water for extinguishing fires of secondary batteries in salt water storage tanks and quickly supplying them to the fire extinguishing space in case of fire, it prevents corrosion of facilities such as storage racks, secondary batteries, and stacker cranes caused by salt water. It is an object of the present invention to provide a fire suppression system provided in a rack for storing secondary batteries that can be used.

In order to achieve the above object, the present invention is disposed at the bottom of a storage rack in which a plurality of storage spaces for accommodating secondary batteries is formed, and a fire extinguishing unit divided into a plurality of fire extinguishing spaces;

A brine supply unit for supplying brine to the digestion space;

A fire detection unit including a plurality of sensors arranged to monitor the storage space of the storage rack;

And a cover disposed outside the storage rack to form a passage through which a secondary battery in which a fire has occurred moves.

In addition, the cover is disposed along the length direction of the storage rack at a position spaced apart from the outer end of the storage rack, and a guide surface for guiding the secondary battery moved through the passage to the fire extinguishing space is formed at the lower end. .

In addition, the cover is characterized in that a locking groove is formed to prevent the secondary battery entering the passage from being jammed during movement.

Further, the brine supply unit includes a brine storage tank in which brine is stored, a supply pump for pumping brine stored in the brine storage tank, and a supply pipe for delivering brine supplied through the supply pump to a fire extinguishing space.

The present invention made as described above minimizes damage by initially extinguishing a fire occurring in the secondary battery during the manufacturing process of the secondary battery, and the secondary battery in which the fire is generated is dropped into the fire extinguishing space disposed at the bottom of the storage rack. It prevents the spread of the fire at the point where the first fire occurred, and quickly injects salt water to extinguish the fire from the secondary battery into the fire extinguishing space at the moment of the fire, reducing the risk of corrosion caused by the salt water in normal times, making maintenance convenient. There is an improved advantage.

1 is an exemplary view showing a fire suppression system provided in a rack for storing secondary batteries according to the present invention.
2 is an exemplary view showing a fire suppression system provided in a rack for storing secondary batteries according to the present invention from a different angle.
Figure 3 is an exemplary view showing the operating state of the fire suppression system provided in the rack for storing secondary batteries according to the present invention.

Hereinafter, in addition to the above objects, other objects and features of the present invention will be clearly revealed through the description of the embodiments with reference to the accompanying drawings.

Unless otherwise defined, all terms used herein including technical or scientific terms have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and should not be interpreted as an ideal or excessively formal meaning unless explicitly defined in the present application. Does not.

Hereinafter, a preferred embodiment of a fire suppression system provided in a rack for storing secondary batteries according to the present invention will be described with reference to the accompanying drawings.

The fire suppression system 1 provided in the secondary battery storage rack according to the present invention is disposed at the bottom of the storage rack 60 in which a plurality of storage spaces 61 for storing secondary batteries is formed, and a plurality of fire extinguishing The fire extinguishing unit 10 divided into the space 11, the salt water supply unit 20 supplying salt water to the fire extinguishing space 11, and the storage space 61 of the storage rack 60 are monitored. It includes a fire detection unit 30 including a plurality of sensors arranged so as to form a passage 50, which is disposed outside the storage rack 60 to form a passage 50 through which a secondary battery in which a fire has occurred moves. .

In the present invention made as described above, when a fire occurs in the secondary battery stored in the storage rack 60, the sensor detects it, and the stacker crane 70 transfers the secondary battery in which the fire has occurred. It is pushed out of the storage space 61 and falls into the fire extinguishing space 11 disposed at the bottom of the storage rack 60. At this time, it is possible to extinguish the fire of the fallen secondary battery by rapidly supplying salt water to the fire extinguishing space 11, so it is possible to extinguish the fire quickly, and because salt water is supplied only when a fire occurs, there is a problem of corrosion of facilities caused by salt water. Can be prevented.

Looking at this in detail with reference to the accompanying drawings, first, the fire extinguishing unit 10 is divided into a plurality of fire extinguishing spaces 11 at the lower end of the storage rack 60 as shown in FIGS. 1 to 3.

Here, the fire extinguishing unit 10 is formed in the form of a case extending in the longitudinal direction and having an open top, and a fire extinguishing space 11 filled with salt water is formed, wherein the fire extinguishing space 11 is spaced at regular intervals along the length direction. It is divided into a plurality of independent spaces by a plurality of bulkheads arranged with each other.

At this time, each fire extinguishing space 11 is formed to correspond to the location and number of the storage spaces 61 formed in the storage rack 60, that is, the storage rack 60 is vertically as shown in FIG. It is formed extending and divided into multiple layers, and storage spaces 61 are formed at regular intervals on each floor, and the fire extinguishing space 11 is formed so that one is disposed at the lower end of the storage space 61 arranged in a vertical line. .

Therefore, a fire occurs in any one of the secondary batteries stored in the plurality of storage spaces 61 formed in the storage rack 60, and a fire occurs in the fire extinguishing space 11 corresponding to each storage space 61. It can cause the battery to fall.

The brine supply unit 20 is for supplying brine to the fire extinguishing space 11, and includes a brine storage tank 21 in which brine is stored, and a supply pump 22 for pumping brine stored in the brine storage tank 21. ), and a supply pipe 23 for delivering the brine supplied through the supply pump 22 to the fire extinguishing space 11.

The brine storage tank 21 is stored in brine, and may be preferably made of a stainless material to prevent corrosion by an electrolyte constituting the brine, but is not limited thereto.

At this time, a plurality of the salt water storage tanks 21 are disposed at positions spaced apart from each other, and salt water is stored in each. As shown in FIG. 2, a pair of salt water storage tanks 21 are respectively disposed at both ends of the storage rack 60 in the longitudinal direction to be sensed. The salt water stored in the salt water storage tank 21 disposed at the location closest to the fire occurrence location is supplied to the fire extinguishing space 11.

On the other hand, the fire extinguishing unit 10 may be formed by arranging a plurality of independent bodies each having a fire extinguishing space 11 adjacent to each other, through this, extinguishing the fire, that is, the convenience of replacement or repair of the used fire extinguishing unit. There is an improved effect.

In addition, there is an advantage in that the cost required for maintenance can be reduced by replacing only the body in which the used fire extinguishing space is formed.

The supply pump 22 pumps the salt water stored in the salt water storage tank 21 while operating according to the applied power and signals, and supplies the salt water to the supply pipe 23.

The supply pump 22 is preferably configured to operate in conjunction with a sensor provided in the fire detection unit 30 to be described later, and more preferably, it is arranged one-to-one in the plurality of salt water storage tanks 21 to prevent fire. The brine from the brine storage tank 21 adjacent to the generated location is pumped and supplied to the fire extinguishing space 11.

The operation control of the supply pump 22 is controlled through a control unit (not shown in the drawing), and the control unit calculates a detection value input from the sensor of the fire detection unit 30 to be described later, and then calculates the detection value from the location where the fire occurred. By operating the supply pump 22 arranged in the salt water storage tank 21 arranged at the nearest location, salt water is quickly supplied to the fire extinguishing space at the location where the secondary battery in which the fire occurred falls.

The supply pipe 23 communicates the supply pump 22 and the fire extinguishing space 11 to deliver the brine pumped by the supply pump to the fire extinguishing space 11, and the inside of the fire extinguishing space ( It includes a discharge port opened toward 11) and a discharge nozzle provided in the discharge port.

At this time, it is preferable that the discharge nozzle is configured to be controlled by the control unit, which is the discharge nozzle disposed at a position other than the fire extinguishing space 11 through which salt water is transmitted, and maintains a closed state, and Control so that only the displaced discharge nozzle is opened.

The fire detection unit 30 is disposed in the storage rack 60 to monitor the storage space 61 in real time, and the smoke detection sensor 31 and the temperature of the storage space 61 detect smoke generated in the event of a fire. It includes a temperature sensor 32 for sensing.

The smoke detection sensor 31 is arranged to monitor the surroundings of the storage space 61 or the storage space 61 to detect smoke generated in real time during a fire, and monitors one storage space 61 In order to do this, a plurality of smoke detection sensors 31 may be disposed at positions spaced apart from each other.

On the other hand, with the smoke detection sensor 31, any one of a flame detection sensor that detects flame and a heat detection sensor that detects heat may be disposed. When a fire occurs, a fire is detected by detecting at least one of smoke, flame, and heat. When occurs, it can be detected early. It goes without saying that the arrangement interval, number, and location of the smoke detection sensor, flame detection sensor, and heat detection sensor can be variously changed according to the number, area, and location of the storage space, and is not limited to the embodiment shown in the drawings.

In addition, the temperature sensor 32 detects in real time the temperature of the storage space 61 or the secondary battery disposed in the storage space, and detects whether a fire occurs or an abnormally rising temperature before a fire occurs, thereby preventing a fire. To be able to.

That is, when a fire occurs, the temperature sensor 32 detects and transmits it to the control unit, and at the same time, when the secondary battery stored in the storage space abnormally increases in temperature, that is, when there is a risk of a fire, the temperature sensor 32 It is to be transmitted so that fire can be prevented.

The cover 40 is disposed outside the storage rack 60 to form a passage 50 through which the secondary battery in which a fire has occurred moves, and is stored at a position spaced apart from the outer end of the storage rack 60. A guide surface 41 is formed along the length direction of the rack 60 and guides the secondary battery moved through the passage 50 to the fire extinguishing space 11 at the lower end.

1 to 3, the cover 40 is disposed along the length direction of the storage rack 60 at a position spaced from the outer end of the storage rack 60 to the outside. A passage 50 through which the secondary battery falls is formed between the outer end and the inner circumferential surface.

When the stacker crane pushes the secondary battery in the storage space 61, the secondary battery B separated from the storage space 61 is lowered along the passage 50. It is introduced into the fire extinguishing space 11 of the fire extinguishing unit 10 arranged to be connected to the lower end of the passage 50 while moving to.

At this time, a guide surface 41 for guiding the secondary battery B moved through the passage 50 to the fire extinguishing space 11 is further formed at the lower end of the cover 40, and the guide surface 41 is a fire extinguishing space. It is formed to form a gentle curve toward (11) to lower the moving speed of the falling secondary battery and guide it to the fire extinguishing space at the same time.

Meanwhile, the cover 40 is formed with a locking groove 42 for preventing the secondary battery entering the passage 50 from being jammed during movement.

The jam prevention groove 42 is the secondary battery B is separated from the storage space 61 in the process of pushing the secondary battery B stored in the storage space 61 and dropping it into the fire extinguishing space. The center of gravity shifts, and this causes the first end of the pre-entry into the passage to be inclined downward, and the edge and corner of the inclined secondary battery abut against the inner circumferential surface of the cover 40, thereby limiting the movement to the lower side. It is to prevent.

The locking groove 42 is preferably formed to form a smooth curved surface by bending outward on the inner circumferential surface of the cover 40 that is horizontal with the storage space 61, but is not limited thereto.

In addition, a plurality of the locking grooves 42 are formed at regular intervals along the length direction of the cover 40, and are preferably formed on the inner circumferential surface of the cover 40 horizontally with the storage space 61, respectively. Prevents jamming of secondary batteries that are pushed out of the storage space.

Therefore, in the process of dropping the secondary battery in which the fire has occurred into the fire extinguishing space 11 through the passage 50, the movement is not restricted, so that the fire is extinguished by moving quickly to the fire extinguishing space.

On the other hand, the cover 40 may be disposed inclined toward the storage rack so that the width of the passage 50 becomes narrower toward the lower side so that the speed of the secondary battery falling according to the vertical height of the storage rack 60 can be adjusted. have.

That is, the higher the vertical height of the storage rack 60, the faster the falling speed of the secondary battery falling from the top, and thus the lower part of the cover or the guide surface or the fire extinguishing part may be damaged. It minimizes the loss of brine filled in the digestive space by overflowing to the outside.

Here, the lower portion of the cover 40, that is, the inner circumferential surface disposed obliquely toward the outer end of the storage rack 60, minimizes damage to the cover when it comes into contact with a falling secondary battery and increases the frictional force to slow the moving speed of the secondary battery. A buffer pad (not shown in the drawing) may be further provided.

The buffer pad is a material having elasticity such as rubber and silicone to minimize the transfer of the flame of the secondary battery by applying a non-combustible or flame-retardant material, and to support the pressure according to the load and moving speed of the falling secondary battery. Of course, it is preferably made of, but is not limited thereto.

In the present invention made as described above, when the fire detection unit 30 detects a secondary battery in which a fire has occurred among the secondary batteries stored in the storage space 61 formed in the storage rack 60, the secondary battery is stored in the storage space. By operating the stacker crane used to store or withdraw in (61), the secondary battery in which the fire has occurred is pushed out of the storage space.

The secondary battery that has been pushed out of the storage rack falls downward through the passage 50 formed between the storage rack and the cover 40, and the dropped secondary battery falls along the passage and is then caused by the guide surface 41. After being guided, it is put into the fire extinguishing space (11).

On the other hand, the fire detection unit 30 detects the occurrence of a fire and at the same time checks the fire extinguishing space closest to the location where the fire occurred, and the supply pump 22 connected through the identified fire extinguishing space 11 and the supply pipe 23 The brine stored in the brine storage tank 21 is pumped and delivered to the fire extinguishing space 11 by operating.

The fire is completely extinguished by inserting the secondary battery in which the fire has occurred into the fire extinguishing space 11 filled with salt water.

As described above, in the present invention, specific matters such as specific components, etc., and limited embodiments and drawings have been described, but this is provided only to help a more general understanding of the present invention, and the present invention is not limited to the above embodiments. , If a person of ordinary skill in the field to which the present invention belongs, various modifications and variations are possible from these descriptions.

Therefore, the spirit of the present invention is limited to the described embodiments and should not be defined, and all things equivalent or equivalent to the claims as well as the claims to be described later belong to the scope of the present invention. .

1: Fire suppression system provided in a rack for storing secondary batteries
10: digestive part
11: digestive space
20: salt water supply unit
21: salt water storage tank 22: supply pump
23: supply piping
30: fire detection unit
31: smoke detection sensor 32: temperature detection sensor
40: cover
41: guide surface 42: jam prevention groove
50: passage

Claims (4)

A fire extinguishing unit 10 which is disposed at the bottom of the storage rack 60 in which a plurality of storage spaces 61 for storing secondary batteries is formed, and is divided into a plurality of fire extinguishing spaces 11;
A brine supply unit 20 for supplying brine to the fire extinguishing space 11;
A fire detection unit 30 including a plurality of sensors arranged to monitor the storage space 61 of the storage rack 60;
Includes; a cover 40 disposed outside the storage rack 60 to form a passage 50 through which a secondary battery in which a fire has occurred moves,
The cover 40,
A guide surface that is disposed along the length direction of the storage rack 60 at a position spaced apart from the outer end of the storage rack 60 and guides the secondary battery moved through the passage 50 to the fire extinguishing space 11 at the lower end (41) is formed,
The cover 40,
A locking groove 42 is formed to prevent the secondary battery entering the passage 50 from being jammed during movement,
The cover 40,
It is disposed inclined toward the storage rack 60 so that the width of the passage 50 becomes narrower as it goes downward so that the speed of the secondary battery falling according to the vertical height of the storage rack 60 can be adjusted,
The guide surface 41 is formed to form a gentle curve toward the fire extinguishing space 11,
The locking groove 42 is provided in a secondary battery storage rack, characterized in that it is formed to form a gentle curved surface by bending outward on the inner circumferential surface of the cover 40 that is horizontal with the storage space 61 Fire suppression system.
delete delete The method according to claim 1, wherein the salt water providing unit 20,
A salt water storage tank 21 in which salt water is stored,
A supply pump 22 for pumping the brine stored in the brine storage tank 21,
Fire suppression system provided in a secondary battery storage rack, characterized in that it comprises a supply pipe (23) for delivering the brine supplied through the supply pump (22) to the fire extinguishing space (11).

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