CN215608925U

CN215608925U - Fireproof battery pack shell

Info

Publication number: CN215608925U
Application number: CN202121849387.XU
Authority: CN
Inventors: 晏子聪; 路宝
Original assignee: Wuhu Etc Battery Ltd
Current assignee: Wuhu Etc Battery Ltd
Priority date: 2021-08-09
Filing date: 2021-08-09
Publication date: 2022-01-25
Anticipated expiration: 2031-08-09

Abstract

The utility model discloses a fireproof battery pack shell, which relates to the field of a fireproof device of a battery pack and comprises a lower box body, wherein two dry powder chambers are symmetrically arranged on two sides of the lower box body, spray holes are formed in the inner sides of the dry powder chambers, the dry powder chambers are communicated with the inner part of the lower box body through the spray holes, a control box is arranged at one end of the lower box body, an expansion control assembly is arranged in the control box, a gas storage box is communicated with the top of the expansion control assembly, when the battery pack is combusted, the expansion control assembly is used for releasing gas in the gas storage box to the dry powder chambers, the spray holes are opened at the same time, and upper cover plates are arranged on the lower box body and the gas storage box. The utility model utilizes the foaming material to expand by heating to push the push plate, utilizes the push plate to open the spray hole and the gas storage box, utilizes the gas to raise and spray out the extinguishing dry powder to extinguish the open fire of the battery pack, has simple and durable control structure, can quickly react at high temperature and prevent the fire from spreading, has small volume and does not influence the normal use of the battery pack after being installed.

Description

Fireproof battery pack shell

Technical Field

The utility model relates to the field of a battery pack fireproof device, in particular to a fireproof battery pack shell.

Background

The existing battery pack only has a flame retardant function and does not have the capability of extinguishing open fire, once the battery pack is subjected to high-temperature deflagration, the battery pack is easy to spread outwards from a point to a surface to cause a fire, and once the fire becomes large, the battery pack is difficult to extinguish, economic loss rises along with the deflagration, so that a device which is small in size and can spontaneously prevent the battery from burning in a short time is needed, the device can be quickly started and extinguish the fire after the battery burns, and the fire risk caused by the deflagration of the battery pack is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a fireproof battery pack shell, which solves the problem that the existing battery pack is poor in fireproof capacity.

The utility model provides a fire prevention battery package shell, includes box down, the bilateral symmetry of box is equipped with two dry powder rooms down, the inboard of dry powder room all is equipped with the orifice, the dry powder room passes through orifice and the inside intercommunication of box down, the one end of box is equipped with the control box down, be equipped with expansion control assembly in the control box, expansion control assembly's top intercommunication has the gas storage box, and when battery package burning, expansion control assembly is used for releasing gas in the gas storage box to dry powder room, opens the orifice simultaneously, be equipped with the upper cover plate on box and the gas storage box down.

Preferably, the expansion control assembly comprises a push plate which is slidably connected in the control box, inserting strips are arranged on two sides of the push plate and slidably connected to inner walls of two sides of the lower box body, the front ends of the inserting strips seal the spray holes, an air outlet pipe is arranged above the push plate, one end of the air outlet pipe is communicated with the air storage box, the other end of the air outlet pipe is communicated with a blow pipe, a rotary conduction assembly is arranged in the middle of the air outlet pipe, the lower portion of the rotary conduction assembly abuts against the outer side of the push plate, two ends of the air outlet pipe are respectively communicated with the dry powder chamber, a fixed block is arranged between the top of the push plate and the bottom of the air storage box, the push plate is slidably connected with the fixed block, and the blow pipe is arranged in the fixed block.

Preferably, the rotary conduction assembly comprises a valve core rotatably connected to the middle part of the air outlet pipe, a second through hole is formed in the valve core, rotating plates are externally connected to two ends of a rotating shaft of the valve core, and the lower parts of the rotating plates are abutted to the outer side of the push plate.

Preferably, the middle part of the rotating plate is provided with a groove.

Preferably, the outer end of the control box is provided with a plurality of first through holes.

The utility model has the advantages that:

the utility model utilizes the foaming material to expand by heating to push the push plate, utilizes the push plate to open the spray hole and the gas storage box, utilizes the gas to raise and spray out the extinguishing dry powder to extinguish the open fire of the battery pack, has simple and durable control structure, can quickly react at high temperature and prevent the fire from spreading, has small volume and does not influence the normal use of the battery pack after being installed.

Drawings

Fig. 1 is a schematic view of the internal structure of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a sectional view taken along line a-a in fig. 2.

Fig. 4 is a sectional view taken along line B-B in fig. 2.

Fig. 5 is a sectional view taken along line C-C in fig. 2.

Fig. 6 is a schematic structural diagram of a rotary feedthrough assembly.

The automatic powder filling machine comprises a lower box body 1, an inserting strip 11, a dry powder chamber 12, a control box 13, a through hole I14, a spray hole 15, a push plate 2, a blow pipe 3, an air outlet pipe 31, a rotating plate 32, a groove 33, a valve core 4, a through hole II 41, an air storage box 5, a fixing block 6 and an upper cover plate 7.

Detailed Description

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

As shown in fig. 1 to 6, a fireproof battery pack shell comprises a lower box body 1, two dry powder chambers 12 are symmetrically arranged on two sides of the lower box body 1, spray holes 15 are arranged on the inner sides of the dry powder chambers 12, the dry powder chambers 12 are communicated with the interior of the lower box body 1 through the spray holes 15, a control box 13 is arranged at one end of the lower box body 1, an expansion control component is arranged in the control box 13, an air storage box 5 is communicated with the top of the expansion control component, the expansion control component comprises a push plate 2 which is slidably connected in the control box 13, insertion strips 11 are arranged on two sides of the push plate 2, the insertion strips 11 are slidably connected to the inner walls of two sides of the lower box body 1, the spray holes 15 are blocked by the front end of the insertion strips 11, an air outlet pipe 31 is arranged above the push plate 2, one end of the air outlet pipe 31 is communicated with the air storage box 5, the other end of the air outlet pipe 31 is communicated with a blow pipe 3, and a rotary conduction component is arranged in the middle of the air outlet pipe 31, the lower portion of the rotary conduction assembly is abutted to the outer side of the push plate 2, two ends of the air outlet pipe 31 are respectively communicated with the dry powder chamber 12, a fixing block 6 is arranged between the top of the push plate 2 and the bottom of the air storage box 5, the push plate 2 is in sliding connection with the bottom surface of the fixing block 6, the blowpipe 3 is arranged in the fixing block 6, and the upper cover plates 7 are arranged on the lower box body 1 and the air storage box 5. And foamable particles such as EPS beads are filled in a gap between the push plate 2 and the lower box body 1, and the upper sealing and fixing block 6 is arranged after the gap is completely filled. The dry powder chamber 12 is filled with dry powder material for fire extinguishing, and the gas storage box 5 is filled with inert gas such as nitrogen or carbon dioxide under certain pressure. The two lower ports of the blow pipe 3 extend into the bottom of the dry powder chamber 12 as far as possible, so that the dry powder can be effectively lifted and blown out.

In this embodiment, the rotary conducting component includes a valve core 4 rotatably connected to the middle of the air outlet pipe 31, the valve core 4 is provided with a second through hole 41, two ends of a rotating shaft of the valve core 4 are externally connected with rotating plates 32, and the lower portions of the rotating plates 32 are abutted to the outer side of the push plate 2. The initial position of the second through hole 41 is a vertical position, and the air outlet pipe 31 is sealed and blocked.

In this embodiment, the middle portion of the rotating plate 32 is provided with a groove 33, and the groove 33 can enable the rotating plate 32 to rotate to a horizontal position, so that the rotating angle of the rotating plate 32 is maximized, and the second through hole 41 is convenient to rotate to the horizontal position to conduct the air outlet pipe 31.

In this embodiment, the outer end of the control box 13 is provided with a plurality of first through holes 14, and the first through holes 14 are used for exhausting air in the control box 13 when the push plate 2 moves outwards, so as to prevent air pressure from pushing against the push plate 2 and blocking the push plate 2 from moving.

The working process and principle are as follows:

when the battery pack burns, the internal temperature reaches more than 100 ℃, the foamable particles begin to expand at the moment, the size is rapidly increased, the push plate 2 is pushed to slide outwards, the push plate 2 drives the inserting strips 11 to slide outwards as well until the spray holes 15 are completely opened, the push plate 2 also pushes the rotating plate 32 while moving, the rotating plate 32 rotates along with the rotating plate, the rotating plate 32 drives the valve core 4 to rotate until the through holes II 41 conduct the air outlet pipe 31, at the moment, compressed gas in the air storage box 5 is sprayed out from the air outlet pipe 31 to enter the blow pipe 3 and then enters the dry powder chamber 12 from the blow pipe 3, and dry powder in the dry powder chamber 12 is sprayed into the lower box body 1 from the open spray holes 15, so that the purpose of fire extinguishment is achieved.

It will be appreciated by those skilled in the art that the utility model may 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 equivalence to the utility model are intended to be embraced therein.

Claims

1. The utility model provides a fire prevention battery package shell, its characterized in that includes box (1) down, the bilateral symmetry of box (1) is equipped with two dry powder rooms (12) down, the inboard of dry powder room (12) all is equipped with orifice (15), dry powder room (12) are through orifice (15) and the inside intercommunication of box (1) down, the one end of box (1) is equipped with control box (13) down, be equipped with the inflation control subassembly in control box (13), the top intercommunication of inflation control subassembly has gas storage box (5), and when the battery package burning, the inflation control subassembly is used for releasing gas in gas storage box (5) to dry powder room (12), opens orifice (15) simultaneously, be equipped with upper cover plate (7) down on box (1) and gas storage box (5).

2. The fireproof battery pack shell according to claim 1, wherein the expansion control component comprises a push plate (2) slidably connected in a control box (13), two sides of the push plate (2) are provided with inserts (11), the inserts (11) are slidably connected to the inner walls of the two sides of the lower box body (1), the front ends of the inserts (11) block the spray holes (15), an air outlet pipe (31) is arranged above the push plate (2), one end of the air outlet pipe (31) is communicated with the air storage box (5), the other end of the air outlet pipe (31) is communicated with a blow pipe (3), the middle part of the air outlet pipe (31) is provided with a rotary conducting component, the lower part of the rotary conducting component abuts against the outer side of the push plate (2), two ends of the air outlet pipe (31) are respectively communicated with the dry powder chamber (12), a fixing block (6) is arranged between the top of the push plate (2) and the bottom of the air storage box (5), the push plate (2) is connected with the fixing block (6) in a sliding mode, and the blowing pipe (3) is arranged in the fixing block (6).

3. The fireproof battery pack shell according to claim 2, wherein the rotary conducting assembly comprises a valve core (4) rotatably connected to the middle of the air outlet pipe (31), a second through hole (41) is formed in the valve core (4), rotating plates (32) are externally connected to two ends of a rotating shaft of the valve core (4), and the lower portion of each rotating plate (32) is abutted to the outer side of the push plate (2).

4. A fire resistant battery pack housing according to claim 3, wherein said flap (32) is provided with a groove (33) in the middle.

5. A fire-resistant battery pack case as claimed in claim 1, wherein the outer end of the control box (13) is provided with a plurality of first through holes (14).