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Battery with explosion prevention function

A battery and functional technology, applied in primary batteries, secondary battery manufacturing, battery pack components, etc., can solve the problems of not installing safety devices, explosion-proof covers that cannot be used for batteries, etc., to achieve convenient adjustment, good sealing, and overcome operation difficult effect

Inactive Publication Date: 2008-05-28
SHENZHEN BAK BATTERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the wall thickness of the battery container is limited, it is not suitable to use mechanical flanging to seal the battery made of aluminum or aluminum alloy with low mechanical strength. Therefore, the above explosion-proof cover cannot be applied to batteries with soft battery containers.
[0008] Due to the above reasons, at present, batteries with low mechanical strength of the battery container do not use mechanical flange sealing, but welding sealing, and no safety device is installed on the cover plate assembly of this battery

Method used

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  • Battery with explosion prevention function
  • Battery with explosion prevention function
  • Battery with explosion prevention function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Embodiment 1. A battery combined with figure 2 , image 3As shown, it includes a battery container 1, an electrode assembly 2 accommodated in the battery container 1, and a cover plate assembly for sealing the battery container 1, wherein the cover plate assembly includes an assembly seat 17, a cover plate 15, an insulating member 11, and an explosion-proof film 8 and pull plate 5. The assembly seat 17 is an assembly plate welded on the battery container 1. The assembly plate has a cover plate hole 19, and there is an upwardly extending cylinder 25 around the cover plate hole 19, and a vertically connected cylinder 25 is formed in the cylinder 25. Cavity 28. There is an annular table top 18 around the cover plate hole 19 in the cylinder, and the upper part of the cylinder 25 forms an annular sealing groove 29 on the inner wall of the cavity 28 of the assembly seat 17 by bending inwardly (bending portion 16 ). There is a pressure relief hole 14 on the cover plate 15 ...

Embodiment 2

[0054] Embodiment 2, another kind of battery, combined with image 3 , Figure 6 As shown, it includes a battery container 1, an electrode assembly 2 accommodated in the battery container 1, and a cover plate assembly for sealing the battery container 1, wherein the cover plate assembly includes an assembly seat 17, a cover plate 15, an insulating member 11, and an explosion-proof film 8 and pull plate 5. The assembly seat 17 is an assembly plate welded on the battery container 1. The assembly plate has a cover plate hole 19, and there is an upwardly extending cylinder 25 around the cover plate hole 19, and a vertically connected cylinder 25 is formed in the cylinder 25. Cavity 28. There is an annular table top 18 around the cover plate hole 19 in the cylinder, and the upper part of the cylinder 25 forms an annular sealing groove 29 on the inner wall of the cavity 28 of the assembly seat 17 by bending inwardly (bending portion 16 ). There is a pressure relief hole 14 on the...

Embodiment 3

[0055] Embodiment 3, yet another battery, combined with Figure 7 and Figure 8 As shown, it includes a battery container 1, an electrode assembly 2 accommodated in the battery container 1, and a cover plate assembly for sealing the battery container 1, wherein the cover plate assembly includes an assembly seat 17, a cover plate 15, an insulating member 11, and an explosion-proof film 8 and pull plate 5. The assembly seat 17 is an assembly plate welded on the battery container 1, and the assembly plate has a cover plate hole 19, and a cylinder 25 extending downward is formed around the cover plate hole 19, and a vertically connected cylinder 25 is formed in the cylinder 25. Cavity 28. There is an annular table top 18 around the cover plate hole 19 in the cylinder, and the lower part of the cylinder 25 forms an annular sealing groove 29 on the inner wall of the cavity 28 of the assembly seat 17 by bending inwardly (bending portion 16 ). There is a pressure relief hole 14 on ...

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PUM

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Abstract

The invention discloses a battery, which comprises a battery container, an electrode component which is arranged in the battery container, and a cover plate component which is used to seal the battery container. The cover plate component comprises a cover plate, an insulating part, an anti-explosion membrane and a pulling board. The battery is characterized in that the invention also comprises an assembling seat which is provided with an empty cavity that is communicated with the upper part and the lower part. A ring-shaped sealing groove is arranged on the internal wall of the empty cavity. The periphery of the anti-explosion membrane and the periphery of the cover plate are blocked, connected and fixed in the ring-shaped groove through an overlapping and tightening connection mode. The cover plate is communicated with the anti-explosion membrane, and a pressure release chamber is formed between the cover plate and the anti-explosion membrane. Pressure release holes are arranged on the cover plate. The anti-explosion membrane is communicated with the pulling board which is arranged at the lower part of the anti-explosion membrane and is fixed on the assembling seat after being insulated by the insulating part. When the pressure of the anti-explosion membrane is larger than the set value, the electric connection of the anti-explosion membrane and the pulling board is cut down. The assembling seat is welded on the battery container, and the container is sealed. The invention provides the battery that can be conveniently provided with anti-explosion devices no matter how high or low the mechanical strength of the battery container is.

Description

technical field [0001] The invention relates to a battery with explosion-proof function. Background technique [0002] With the rapid development of electronic equipment such as audio equipment, camera equipment, and personal computers in the direction of portability and mobility, high-capacity non-hydrolyzed secondary batteries represented by various alkaline batteries and lithium secondary batteries have become these The first choice for driving power of electronic equipment. [0003] Because this kind of high-capacity battery is sealed in a closed container, when the charger is overcharged or misused, abnormal gas will often be generated inside the battery. The accumulation of abnormal gas will cause excessive pressure inside the battery, resulting in There is a danger of injury to electronic equipment or persons due to battery rupture. [0004] Therefore, in order to prevent such accidents, this battery has been equipped with an explosion-proof safety device that opens...

Claims

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Application Information

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IPC IPC(8): H01M2/04H01M2/12H01M2/08H01M2/00H01M10/04H01M6/00H01M50/147H01M50/184H01M50/186H01M50/342
CPCY02E60/12Y02E60/10Y02P70/50
Inventor 毛焕宇
Owner SHENZHEN BAK BATTERY CO LTD
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