A method of laser welding explosion-proof sheet for aluminum shell battery cover plate

An aluminum shell battery and laser welding technology, which is applied to laser welding equipment, welding equipment, metal processing equipment, etc., to avoid welding explosion points and air leakage, avoid pollution, and improve welding yield.

Active Publication Date: 2020-08-25
DONGGUAN GLORYSTAR LASER TECH
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a laser welding method for the explosion-proof sheet of the aluminum shell battery cover plate according to the above-mentioned deficiencies in the prior art. , can avoid the problem of air leakage caused by welding explosion, and can significantly improve the welding yield

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  • A method of laser welding explosion-proof sheet for aluminum shell battery cover plate
  • A method of laser welding explosion-proof sheet for aluminum shell battery cover plate

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Embodiment Construction

[0022] The structural principle and working principle of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0023] The present invention is a kind of laser welding method of explosion-proof plate of aluminum shell battery cover plate, referring to figure 1 , is to weld a piece of explosion-proof sheet 2 that can withstand a certain pressure on the cover plate 1 of the aluminum-cased battery. When there is no abnormal gas blowing, it is required that the explosion-proof disk cannot have an explosion point or an air leakage point. The laser welding method for the explosion-proof disk of the aluminum shell battery cover plate of the present invention includes the following method steps:

[0024] S1. Place the explosion-proof sheet on the pressure relief hole of the battery cover of the aluminum case, use a vacuum adsorption device to generate negative pressure, and attach the explosion-proof sheet to the edge of the pr...

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Abstract

The invention discloses an anti-explosion piece laser welding method of an aluminum shell battery cover plate, and relates to the technical field of aluminum shell battery making. The anti-explosion piece laser welding method comprises following steps that S1, an anti-explosion piece is placed on a pressure relief hole in the aluminum shell battery cover plate, a vacuum absorbing device is adoptedto generate negative pressure, and the anti-explosion piece and the edge of the pressure relief hole of the aluminum shell battery cover plate are subject to vacuum absorbing and tight attaching; S2,multiple welding points are selected around the welding path of the anti-explosion piece, and a laser welding head is adopted to carry out laser dotting pre-welding; S3, vacuum negative pressure is broken, and a vacuum absorbing device is moved away; S4, a laser welding head is adopted for carrying out laser full welding in a manner of surrounding the welding path of the anti-explosion piece, andthe anti-explosion piece and the aluminum shell battery cover plate are welded together. The warping deforming in the full welding process of the anti-explosion piece can be obviously reduced, the problem of gas leakage caused by burst point welding can be solved, and the welding yield can be obviously improved.

Description

technical field [0001] The invention relates to the technical field of manufacturing aluminum-case batteries, in particular to a method for laser welding explosion-proof discs of aluminum-case battery cover plates. Background technique [0002] In the power battery industry, in order to prevent the explosion problem caused by the high pressure inside the aluminum case battery, it is necessary to weld the explosion-proof plate on the cover plate of the aluminum case battery. When it is large, the explosion-proof disc will break to release the battery pressure and prevent the battery from exploding. The explosion-proof plate structure of the aluminum shell battery cover is as follows: figure 1 As shown, a pressure relief hole 11 is set on the aluminum case battery cover plate 1, and a piece of explosion-proof plate 2 that can withstand a certain pressure is welded on the pressure relief hole 11, and the welding must be sealed to prevent air leakage. [0003] At present, the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/21B23K26/12B23K26/70
CPCB23K26/123B23K26/21B23K26/702
Inventor 姚玉东刘小冬尹德生王海亮
Owner DONGGUAN GLORYSTAR LASER TECH
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