CN218602663U

CN218602663U - Novel battery exhaust device

Info

Publication number: CN218602663U
Application number: CN202222854178.5U
Authority: CN
Inventors: 万钊; 高峰; 张要枫; 赵冬梅
Original assignee: Hubei Titanium Era New Energy Co Ltd
Current assignee: Hubei Titanium Era New Energy Co Ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-03-10
Anticipated expiration: 2032-10-25

Abstract

A novel battery exhaust device comprises a battery cover plate, wherein a pressure relief hole is formed in the battery cover plate, a metal cushion block with holes is arranged in the pressure relief hole, and an exhaust assembly is detachably arranged on the metal cushion block with holes; the air exhaust assembly comprises a hollow block, a waterproof breathable film and a headless screw, one end of the hollow block is in threaded connection with the perforated metal cushion block, the other end of the hollow block is provided with a thread groove, at least one exhaust hole is formed in the side wall of the thread groove, the waterproof breathable film is installed inside the thread groove, and the headless screw is installed in the thread groove. The utility model discloses can take the initiative pressure release to the battery regularly or irregularly, prevent battery inflation or explosion.

Description

Novel battery exhausting device

Technical Field

The utility model belongs to the technical field of the battery, in particular to novel battery exhaust device.

Background

The battery can produce gas in its inside in the use, and long-term gas accumulation can make battery internal pressure increase thereby lead to the battery inflation, and outside deformation, because battery inflation makes the battery difficult or can't take out under the condition that some need trade batteries. Further, the battery is likely to be burst or exploded when a certain pressure is reached, thereby causing a safety accident such as a fire.

In order to release the pressure inside the battery, an explosion-proof device is usually disposed on the battery cover plate. When a certain pressure is reached inside the battery, the explosion-proof device is ruptured to release the pressure. The utility model discloses a patent CN205881989U discloses a lithium cell apron, and it is provided with the explosion-proof mechanism of pressure release on the apron, the explosion-proof mechanism of pressure release includes an rupture membrane and an rupture membrane splashproof cover, and in case pressure in the lithium cell casing has exceeded the setting value, under the pressure effect, the rupture membrane is broken and bursts promptly, and the pressure gas in the lithium cell casing leaks to the external world through gas vent and pressure release rupture hole, and the rupture membrane of bursting is blockked by the rupture membrane splashproof cover, and the rupture membrane of avoiding splashing causes secondary harm if cause electrical short circuit to adjacent lithium cell. Then the explosion-proof membrane arranged in the explosion-proof device can be torn under the condition that certain pressure is required in the battery, and the battery is likely to expand before the explosion-proof membrane is torn, so that the battery is passively decompressed and cannot be actively decompressed, and potential safety hazards are eliminated.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can carry out the exhaust apparatus of pressure release voluntarily to the battery.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a novel battery exhaust device comprises a battery cover plate, wherein a pressure relief hole is formed in the battery cover plate, a metal cushion block with holes is arranged in the pressure relief hole, and an exhaust assembly is detachably arranged on the metal cushion block with holes;

the air exhaust assembly comprises a hollow block, a waterproof breathable film and a headless screw, one end of the hollow block is in threaded connection with the perforated metal cushion block, the other end of the hollow block is provided with a thread groove, at least one exhaust hole is formed in the side wall of the thread groove, the waterproof breathable film is installed inside the thread groove, and the headless screw is installed in the thread groove.

Further, waterproof ventilated membrane is provided with the outer lane, the outer lane is the rubber circle.

Furthermore, the waterproof breathable film is made of polytetrafluoroethylene.

Further, a sealing ring is arranged between the hollow block and the metal cushion block with the holes.

Further, the metal cushion block with the hole is welded in the pressure relief hole.

The utility model discloses beneficial effect:

the utility model discloses well headless screw can play the effect in shutoff exhaust hole and pressure release hole when twisting in the thread groove, prevents that electrolyte and gas in the battery from revealing at will. When the headless screw is screwed to enable the headless screw to rise above the vent hole, gas in the battery can be discharged from the vent hole through the waterproof breathable film through the pressure relief hole, so that periodic or irregular active exhaust is achieved, and the battery is prevented from expanding or exploding due to the fact that the internal gas pressure rises.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an exploded view of the exhaust assembly of the present invention;

in the figure: 1. a battery cover plate; 2. a positive post; 3. a negative pole post; 4. a metal cushion block with holes; 5. an exhaust assembly; 6. a waterproof breathable film; 7. headless screws; 8. a seal ring; 9. a hollow block.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only used as examples, and the protection scope of the present invention is not limited thereby.

Referring to fig. 1 and 2, the novel battery exhaust device comprises a battery cover plate 1, wherein a pressure relief hole is formed in the battery cover plate, a metal cushion block with holes 4 is installed in the pressure relief hole, and an exhaust assembly 5 is detachably installed on the metal cushion block with holes 4. Wherein, the perforated metal cushion block 4 is preferably in a circular ring structure.

The exhaust assembly 5 comprises a hollow block 9, a waterproof breathable film 6 and a headless screw 7, wherein two ends of the hollow block 9 are communicated, so that gas in the battery can pass through. One end of the hollow block 9 is provided with a thread groove, the inside of the thread groove is in thread arrangement, and the headless screw 7 is located inside the thread groove and is in threaded connection with the hollow block 9. The side wall of the thread groove of the hollow block 9 is provided with an exhaust hole, and the number of the exhaust holes is not less than one and can be set according to actual needs. Waterproof ventilated membrane 6 is provided with the outer lane, and its outer lane is the rubber circle, and waterproof ventilated membrane subassembly 6 is located the inside headless screw 7's of thread groove below, plays certain shutoff effect to the inner passage of hollow block 9. Waterproof ventilated membrane 6 adopts the polytetrafluoroethylene material, can make gas pass through and isolated liquid. The other end of cavity piece 9 is provided with the external screw thread, is provided with the internal thread in foraminiferous metal cushion 4's the hole, and cavity piece 9 and foraminiferous metal cushion 4 threaded connection are provided with sealing washer 8 between the two and prevent revealing. The diameter of the end of the hollow block 9 provided with the thread groove is larger than the end provided with the external thread, so that the waterproof breathable film 6 can be placed conveniently.

As shown in figures 1 and 2, a positive pole 2, a negative pole 3 and a metal cushion block 4 with holes are sequentially welded on a cover plate 1, an exhaust assembly 5 and a sealing ring 8 are matched and rotated to be screwed into the metal cushion block 4 to complete locking and sealing, and a headless screw 7 is rotated to be screwed in to compress a waterproof breathable film assembly 6 to complete whole-block cover plate assembly. The headless screw 7 is rotated and screwed out from the hollow block 9, and the headless screw 7 extends to the upper part of the exhaust hole, so that the exhaust can be carried out from the exhaust hole.

Claims

1. The utility model provides a novel battery exhaust device, includes the battery apron, be provided with the pressure release hole on the battery apron, its characterized in that: a metal cushion block with holes is arranged in the pressure relief hole, and an exhaust assembly is detachably arranged on the metal cushion block with holes;

2. The novel battery vent apparatus of claim 1, wherein: the waterproof breathable film is provided with an outer ring which is a rubber ring.

3. A novel battery vent apparatus as claimed in claim 1 or 2, wherein: the waterproof breathable film is made of polytetrafluoroethylene.

4. The novel battery vent apparatus of claim 1, wherein: and a sealing ring is arranged between the hollow block and the metal cushion block with the hole.

5. The novel battery vent apparatus of claim 1, wherein: the metal cushion block with the hole is welded in the pressure relief hole.