CN115911715A - Battery box with fire extinguishing function - Google Patents

Abstract

The invention discloses a battery box with a fire extinguishing function, which relates to the technical field of battery safety and comprises a box body and a box cover, wherein the box cover is arranged at the upper end of the box body, two groups of isolating pieces are symmetrically arranged in the box body and divide the box body into fire extinguishing cavities positioned at two sides and a battery cavity positioned in the middle and communicated with the fire extinguishing cavities, a fire extinguishing unit is placed in the fire extinguishing cavity, and a battery pack is placed in the battery cavity. The plurality of exhaust pipes are arranged, so that fire extinguishing gas can be sprayed from a plurality of positions, and the fire extinguishing efficiency is high.

Description

Battery box with fire extinguishing function

Technical Field

The invention belongs to the technical field of battery safety, and particularly relates to a battery box with a fire extinguishing function.

Background

The existing fire extinguishing products for the battery box in the electric bicycle or the electric automobile in the market are mainly portable fire extinguishers, aerosol fire extinguishing devices, carbon dioxide and other pressure storage type structure fire extinguishing devices, and the fire extinguishing devices are mostly manually operated and externally arranged. On one hand, the best fire extinguishing time is missed after the fire is discovered, and on the other hand, the efficiency is lower because manual fire extinguishing is adopted. In the prior art, a fire extinguishing apparatus disposed in a battery box has also appeared, for example, a battery box of an electric bicycle with an automatic fire extinguishing function, which is disclosed in chinese patent publication No. CN212950959U, and the safety wire is broken by high temperature generated by the storage battery, so that the fire extinguishing gas is finally sprayed out by each module to extinguish the storage battery in time. But combine its technical scheme to know, its structure is fairly complicated, and the part of putting out a fire is poor with battery box separability, and reuse rate is low, has occupied the more inner space of battery box, and when taking place the conflagration, only discharges the gaseous of putting out a fire through a connecting pipe, and the time of putting out a fire is long.

Disclosure of Invention

The invention aims to provide a battery box with a fire extinguishing function, so as to solve the defects caused in the prior art.

The utility model provides a battery box with function of putting out a fire, includes box and case lid, the case lid is installed in the upper end of box, the symmetry is equipped with two sets of spacers and falls into the box and lie in the middle of the chamber of putting out a fire that lies in both sides and lie in and the battery chamber that is linked together in the chamber of putting out a fire, the unit of putting out a fire has been placed to the intracavity of putting out a fire, the unit of putting out a fire includes platelike cavity casing, and the casing intussuseption is filled with the gas of putting out a fire, and the geometric center department of casing is equipped with the perforating hole, installs the sleeve in the perforating hole, is equipped with four blast pipes with the inside intercommunication of casing towards one side in battery chamber on the casing, wears to be equipped with the gas stopper stick that is used for temporary shutoff blast pipe on the blast pipe, and the one end of gas stopper stick is connected with the haulage rope, and the other end of haulage rope is connected to telescopic unit in the sleeve under high temperature can stimulate the haulage rope and extract the gas stopper stick from the blast pipe.

Preferably, the telescopic unit comprises a piston cylinder, a piston rod and a connecting plate, the piston cylinder is installed in the sleeve by means of a base, a gap is reserved between the outer wall of the piston cylinder and the inner wall of the sleeve, the piston is connected in the piston cylinder in a sliding mode, alcohol is filled between the bottom surface of the piston and the bottom surface of the piston cylinder, the two ends of the piston rod are respectively connected with the piston and the connecting plate, the connecting plate is fixedly connected with the traction rope, a mounting hole which is through and axially arranged is formed in the base, and a heat conducting plate is fixed in the mounting hole.

Preferably, the periphery of the exhaust pipe is further provided with an arc-shaped guard plate, and the height of the arc-shaped guard plate is not less than the length of the exhaust pipe.

Preferably, the gas plug rod is made of magnetic metal, and a magnet arranged opposite to the gas plug rod is fixed on the inner side of the arc-shaped protection plate.

Preferably, the sleeve is provided with a through hole for the traction rope to pass through.

Preferably, two adjacent exhaust pipes are symmetrically arranged.

Preferably, a cushion block is further arranged on one side, facing the battery cavity, of the shell, and a channel for protecting the traction rope is formed between every two adjacent cushion blocks.

Preferably, the cushion block is integrally formed with the housing and is communicated with the interior of the housing.

Preferably, the cushion block is made of heat insulation materials.

Preferably, the spacer is a rectangular steel pipe.

The invention has the advantages that:

1. the invention has simple structure, adopts an external installation mode, can be completely separated from the box body, adopts a plate-shaped structural design, occupies small space, can still be continuously used as long as the fire extinguishing unit in the scheme does not generate structural damage, and has high repeated utilization rate.

2. The invention is provided with a plurality of exhaust pipes, can spray fire extinguishing gas from a plurality of positions and has high fire extinguishing efficiency.

Drawings

FIG. 1 is a schematic view of the present invention.

FIG. 2 is an internal schematic view of the present invention.

Fig. 3 is a plan view of the case.

Fig. 4 is a schematic view of the fire extinguishing unit.

Fig. 5 is a partial enlarged view of a portion a in fig. 4.

Fig. 6 is a cross-sectional view of a fire suppression unit.

Fig. 7 is a partial enlarged view of fig. 6 at B.

Wherein: 1 box, 2 case lids, 3 separators, 4 extinguishing unit, 40 casings, 41 perforating holes, 42 sleeves, 43 blast pipes, 44 air lock rods, 45 haulage ropes, 46 telescoping units, 460 piston tube, 461 pistons, 462 piston rods, 463 connecting plate, 464 base, heat-conducting plate, 47 arc backplate, 48 magnet, 49 cushion, 490 passageway, 410 alcohol, 5 chamber of putting out a fire, 6 battery chamber.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 7, a battery box with a fire extinguishing function includes a box body 1 and a box cover 2, the box cover 2 is installed at the upper end of the box body 1, two sets of spacers 3 are symmetrically arranged in the box body 1 and divide the box body 1 into a fire extinguishing chamber 5 located on two sides and a battery chamber 6 located in the middle and communicated with the fire extinguishing chamber 5, the spacers 3 are rectangular steel pipes, a fire extinguishing unit 4 is placed in the fire extinguishing chamber 5, a battery pack is placed in the battery chamber 6, the fire extinguishing unit 4 includes a plate-shaped hollow shell 40, fire extinguishing gas is filled in the shell 40 and can be inert gas, a through hole 41 is formed in the geometric center of the shell 40, a sleeve 42 is installed in the through hole 41, four exhaust pipes 43 communicated with the interior of the shell 40 are arranged on one side of the shell 40 facing the battery chamber 6, two adjacent exhaust pipes 43 are symmetrically arranged, a gas plug rod 44 for temporarily plugging the exhaust pipes 43 is arranged on the exhaust pipes 43, one end of the gas plug rod 44 is connected with a pulling rope 45, the other end of the pulling rope 45 is connected to a telescopic unit 46 in the sleeve 42, the sleeve 42 passes through a through hole for pulling the pulling rope 45, and the pulling rope 45 to pull the high temperature pulling out the pulling rope 45 from the pulling unit 45, and to make a fire-resistant pulling material.

In this embodiment, the telescopic unit 46 includes a piston cylinder 460, a piston 461, a piston rod 462 and a connecting plate 463, the piston cylinder 460 is installed in the sleeve 42 by means of a base 464, a gap is left between an outer wall of the piston cylinder 460 and an inner wall of the sleeve 42, the piston 461 is slidably connected in the piston cylinder 460, alcohol 410 is filled between the piston 461 and a bottom surface of the piston cylinder 460, the piston 461 and the connecting plate 463 are respectively connected to two ends of the piston rod 462, the connecting plate 463 is fixedly connected with the traction rope 45, a through and axially-arranged mounting hole is further formed in the base 464, and a copper heat conducting plate 465 is fixed in the mounting hole.

In this embodiment, the outer periphery of the exhaust pipe 43 is further provided with an arc-shaped guard plate 47, the height of the arc-shaped guard plate 47 is not less than the length of the exhaust pipe 43, the gas plug rod 44 is made of magnetic metal, and a magnet 48 arranged opposite to the gas plug rod 44 is fixed on the inner side of the arc-shaped guard plate 47.

In this embodiment, the housing 40 is further provided with a pad 49 on a side facing the battery cavity 6, and a channel 490 for protecting the pull rope 45 is formed between two adjacent pads 49.

The pad 49 may be formed integrally with the housing 40 and communicate with the inside of the housing 40, so that the volume of the fire extinguishing gas can be increased and the fire extinguishing effect can be improved. Alternatively, the spacer 49 is made of a heat insulating material to isolate the temperature rise of the battery during operation from the fire suppressing gas in the housing 40.

The fire extinguishing method comprises the following steps:

when the battery pack is abnormal and generates high temperature continuously, the temperature of the battery pack is conducted to the heat conduction plate 465, the heat conduction plate 465 transmits the temperature to the alcohol 410 in the piston cylinder 460, the alcohol 410 volatilizes and generates gas, the gas pressure gradually increases along with the gradual increase of the gas until the piston 461 is ejected out, the pulling rope 45 and the gas plug rod 44 are pulled under the action of the connection plate 463, the suction force of the magnet 48 is overcome, the gas plug rod 44 is finally pulled out of the exhaust pipe 43, the exhaust pipe 43 is opened, and the fire extinguishing gas in the shell 40 is sprayed out of the four exhaust pipes 43 to extinguish the battery pack.

It will be appreciated by those skilled in the art that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or are equivalent to the scope of the invention are intended to be embraced therein.

Claims (10)

1. A battery box with a fire extinguishing function comprises a box body and a box cover, wherein the box cover (2) is arranged at the upper end of the box body (1), it is characterized in that two groups of isolating pieces (3) are symmetrically arranged in the box body (1) and divide the box body (1) into a fire extinguishing cavity (5) positioned at two sides and a battery cavity (6) positioned in the middle and communicated with the fire extinguishing cavity (5), a fire extinguishing unit (4) is arranged in the fire extinguishing cavity (5), a battery pack is arranged in the battery cavity (6), the fire extinguishing unit (4) comprises a plate-shaped hollow shell (40), fire extinguishing gas is filled in the shell (40), a through hole (41) is formed in the geometric center of the shell (40), a sleeve (42) is installed in the through hole (41), four exhaust pipes (43) communicated with the interior of the shell (40) are arranged on one side of the shell (40) facing the battery cavity (6), an air plug rod (44) used for temporarily plugging the exhaust pipes (43) penetrates through the exhaust pipes (43), one end of the air plug rod (44) is connected with a traction rope (45), the other end of the traction rope (45) is connected to a telescopic unit (46) in the sleeve (42), the retraction unit (46) is capable of pulling the pull cord (45) and pulling the stopper rod (44) out of the exhaust tube (43) at high temperatures.

2. The battery box with the fire extinguishing function according to claim 1, wherein the telescopic unit (46) comprises a piston cylinder (460), a piston (461), a piston rod (462) and a connecting plate (463), the piston cylinder (460) is installed in the sleeve (42) by means of a base (464), a gap is left between the outer wall of the piston cylinder (460) and the inner wall of the sleeve (42), the piston (461) is slidably connected in the piston cylinder (460), alcohol (410) is filled between the piston (461) and the bottom surface of the piston cylinder (460), two ends of the piston rod (462) are respectively connected with the piston (461) and the connecting plate (463), the connecting plate (463) is fixedly connected with the traction rope (45), a mounting hole is further formed in the base (464) and is axially arranged along the base, and a heat conducting plate (465) is fixed in the mounting hole.

3. The battery box with the fire extinguishing function according to claim 1, wherein the exhaust pipe (43) is further provided with an arc-shaped guard plate (47) at the periphery, and the height of the arc-shaped guard plate (47) is not less than the length of the exhaust pipe (43).

4. A battery box having a fire extinguishing function according to claim 3, wherein the air stopper rod (44) is made of magnetic metal, and a magnet (48) disposed opposite to the air stopper rod (44) is fixed to the inner side of the arc-shaped protector plate (47).

5. The battery box with fire extinguishing function according to claim 1, wherein the sleeve (42) is provided with a through hole for the pulling rope (45) to pass through.

6. The battery box with fire extinguishing function according to claim 1, wherein two adjacent exhaust pipes (43) are symmetrically arranged.

7. The battery box with the fire extinguishing function according to claim 6, wherein the housing (40) is further provided with a cushion block (49) on one side facing the battery cavity (6), and a channel (490) for protecting the traction rope (45) is formed between two adjacent cushion blocks (49).

8. The battery box with fire extinguishing function according to claim 7, wherein the cushion block (49) is integrally formed with the housing (40) and communicates with the inside of the housing (40).

9. The battery box with fire extinguishing function according to claim 7, wherein the cushion block (49) is made of a heat insulating material.

10. The battery box with fire extinguishing function according to claim 1, wherein the separator (3) is a rectangular steel pipe.

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