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Elastic control piercing explosion protection device

A technology of flexible control and explosion-proof devices, which is applied in the direction of electrical components, circuits, battery pack components, etc., can solve the problems of fatality, discount, and inability to guarantee the safety of users, and achieve the effects of reducing noise, ensuring safety, and improving the ability to resist changes

Inactive Publication Date: 2011-11-30
东莞市普莱德精密加工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In terms of the existing partially rolled-thinned explosion-proof design, the thickness of the locally-rolled thinned part often needs to be controlled within 0.01mm when using a stainless steel explosion-proof plate. When the nominal value is within 0.01mm, the fluctuation range is often required to be on the order of microns , weak in the face of corrosion, and cannot guarantee the safety of users; the current burst test of rupture disks usually adopts the method of random testing, and the pass rate of rupture disks cannot reach 100%. This kind of typical destructive test, non-destructive do not know Bad, once the thickness is required to reach micron-level precision, any process will be greatly compromised, and any accident may have fatal consequences, and customers cannot be assured and satisfied

Method used

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  • Elastic control piercing explosion protection device

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0024] An elastic control piercing type explosion-proof device, comprising a battery cover 1, an explosion-proof film 2, an explosion-proof cavity 3 is formed between the battery cover 1 and the explosion-proof film 2, and a guide rod push plate 4, a lever type Bayonet 5 and elastic piece 6, the explosion-proof chamber 3 is provided with guide pipe 31 and vent holes 32, 33 respectively, guide pipe 31 cooperates with guide rod push plate 4, elastic piece 6 is provided with knife seat 61 and elastic claw 62, the lever bayonet 5 is hinged on the knife seat 61, the tip of the lever bayonet 5 is in contact with the explosion-proof film 2, the other end is corresponding to the guide rod push plate 4, and the free ends of the elastic claws 62 are respectively connected to the guide rod push plate In contact with each other, the guide pipe 31 and the vent holes 32, 33 are arranged on the battery cover 1, the battery cover 1 is provided with a ring groove 12, and the ring groove 12 is p...

specific Embodiment approach 2

[0026] To further improve the explosion-proof structure of Embodiment 1, a top cover 7 is provided on the battery cover 1, and the top cover 7 is pressed on the battery cover 1 through riveting points 11, and an explosion-proof cavity is formed between the top cover 7 and the explosion-proof film 2 3. A guide rod push plate 4 and a lever-type bayonet 5 are provided in the explosion-proof chamber 3. The lever-type bayonet 5 is hinged on the top cover 7. The tip of the lever-type bayonet 5 is in contact with the explosion-proof film 2, and the other end is pushed with the guide rod. Corresponding to the plate 4, a four-claw shrapnel 6 is provided between the top cover 7 and the guide rod push plate 4, and the top cover 7 is provided with a guide tube 31 that is matched with the guide rod push plate 4. Through holes 32 and 33, a sealing ring 8 is provided between the top cover 7 and the battery cover 1, and the elastic sheet 6 is riveted on the top cover 7, and the top cover 7 can...

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Abstract

The invention relates to an elastic control piercing explosion protection device, which comprises a battery cover plate and an explosion protection thin film. An explosion protection cavity is formed between the battery cover plate and the explosion protection thin film. A guide rod pushing plate, a lever type bayonet and an elastic piece are arranged in the explosion protection cavity. A guide tube and venting through holes are arranged on the explosion protection cavity. The guide tube is in fit with the guide rod pushing plate. The elastic piece is positioned on the upper part of the explosion protection cavity, and is provided with a plurality of elastic claws in contact with the guide rod pushing plate. The lever type bayonet is hinged to the elastic piece. The sharp end of the lever type bayonet is in contact with the explosion protection thin film, and the other end of the lever type bayonet corresponds to the guide rod pushing plate. The elastic control piercing explosion protection device provided by the invention can make a power battery really realize explosion protection and make explosion protection capability controllable and measurable, and has the advantages of explosion protection safety and reliability, convenience of machining, assembly and use, simple structure and the like.

Description

technical field [0001] The invention relates to an explosion-proof device for a power battery, in particular to an elastically controlled puncture-type explosion-proof device. Background technique [0002] Now the market generally adopts partially rolled-thinned explosion-proof sheets for automotive power batteries. Usually, the explosion-proof sheets are integrated with the battery cover. When an abnormality occurs during use, the internal pressure of the battery expands. It is the first to rupture (also known as cover-opening explosion), which prevents the rise of air pressure through pressure relief, thereby playing the role of explosion-proof for the battery pack. In terms of the existing partially rolled-thinned explosion-proof design, the thickness of the locally-rolled thinned part often needs to be controlled within 0.01mm when using a stainless steel explosion-proof plate. When the nominal value is within 0.01mm, the fluctuation range is often required to be on the ...

Claims

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Application Information

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IPC IPC(8): H01M2/12
CPCY02E60/12Y02E60/10
Inventor 刘怀志
Owner 东莞市普莱德精密加工有限公司
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