Aluminum shell structure of laminated lithium battery and manufacturing method thereof

A manufacturing method and technology for lithium batteries, applied in structural parts, battery pack parts, battery boxes/jackets, etc., can solve problems such as high welding and assembly requirements

Active Publication Date: 2017-11-21
昆山斯格威电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Friction stir welding also has certain deficiencies, for example, the workpiece to be welded must be clamped and fixed, the requirements for welding assembly are higher, and the requirements for the gap between the butt joints are higher than that of filler wire welding but lower than that of laser welding

Method used

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  • Aluminum shell structure of laminated lithium battery and manufacturing method thereof
  • Aluminum shell structure of laminated lithium battery and manufacturing method thereof
  • Aluminum shell structure of laminated lithium battery and manufacturing method thereof

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings.

[0023] A laminated lithium battery aluminum shell structure, including a shell wall 1 and a shell bottom 2, the shell bottom 2 is completely inside the shell wall 1, with a gap of 0-0.2mm between one side and the shell wall 1; the shell bottom 2 and the shell wall 1 through friction stir welding, and the friction stir welding seam is along the entire circumference of the seam between the shell bottom 2 and the shell wall 1 .

[0024] A method for manufacturing a laminated lithium battery aluminum case structure, characterized in that it comprises the following steps: S1, placing the case wall 1 outside the case wall positioning column 4, and the lower part of the case wall 1 is in contact with the positioning base 5; S2 1. Put the shell bottom 2 in the space surrounded by the shell wall 1 and the upper surface 401 of the shell wall positioning column 4, the lower surfa...

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PUM

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Abstract

The invention discloses a laminated lithium battery aluminum shell structure and a manufacturing method thereof, comprising a shell bottom and a shell wall; Leave a gap of 0-0.2mm; the bottom of the shell and the wall of the shell are connected by welding, and the welding method used is friction stir spot welding. The aluminum casing structure of a laminated lithium battery manufactured by the manufacturing method of the present invention has good strength, reliability and sealing performance, and has a neat and beautiful appearance, which can improve the appearance consistency of the battery.

Description

technical field [0001] The invention relates to the technical field of lithium battery packaging, in particular to a laminated lithium battery aluminum casing structure and a manufacturing method thereof. Background technique [0002] At present, there are mainly two structural forms of aluminum casings for encapsulating laminated lithium batteries on the market. One is that the shell bottom and the shell wall are integrated. This kind of aluminum shell is manufactured by stamping. The thickness of the aluminum plate used is small, generally less than 0.6mm. The volume of the aluminum shell is also relatively small. It is mainly used for Smaller volume and capacity batteries such as mobile phone batteries. Another aluminum shell structure is welded by a separate straight cylindrical shell wall (rectangular cross-sectional shape) and a plate-shaped shell bottom. The thickness of the shell wall and shell bottom material used is relatively large, generally above 1.0mm. The we...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M2/02B23K20/12B23K20/26B23K37/04H01M50/10
CPCB23K20/122B23K20/1245B23K20/126H01M50/10Y02E60/10
Inventor 蔡智亮杨洪刚黄辉沈金华李彦国谷国迎赵欣康荣峰
Owner 昆山斯格威电子科技有限公司
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