Fully automatic vacuum capper for square lithium ion battery and its capping method

A lithium-ion battery and vacuum sealing technology, which is applied to secondary batteries, battery pack components, non-aqueous electrolyte storage batteries, etc., can solve the problems of inability to accurately control the sealing height, poor pre-sealing vacuum degree, and battery thickness rebound, etc., to achieve Eliminate the deterioration of active materials and organic electrolytes, eliminate battery thickness rebound, and the effect of small capacity changes

Inactive Publication Date: 2007-08-01
天津丰泽科技有限公司
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Problems solved by technology

[0003] The present invention aims to solve the technical problems of poor pre-sealing vacuum degree in the process of producing square lithium-ion batteries in the prior art, and the inability to accurately control the sealing height in the secondary manual sealing, thereby causing electrolyte leakage, battery thickness rebound and swelling after sealing, and provides A fully automatic vacuum sealing machine and sealing method for a square lithium-ion battery that ensures no deformation of the battery, high vacuum, and reliable sealing

Method used

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  • Fully automatic vacuum capper for square lithium ion battery and its capping method
  • Fully automatic vacuum capper for square lithium ion battery and its capping method
  • Fully automatic vacuum capper for square lithium ion battery and its capping method

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0036]As shown in Fig. 1 and Fig. 2, the technical solution realized by the square lithium-ion battery automatic vacuum sealing machine of the present invention is: comprising frame 100, high-speed pressure unit 200 and battery clamp 500, described high-speed pressure unit 200 and battery A steel ball distributing device 700 is arranged between the clamps 500 ; the high-pressure power unit 200 includes a mechanical impact hammer 400 driven by a master cylinder 300 . As shown in Figures 1 and 3, the mechanical impact hammer body 400 includes a connecting piece 402, a push rod 405, an impact hammer body 403, a gram block unit 410 and a support that are arranged in a sleeve 407 and connected to the master cylinder 300 in sequence. Rod 401, the push rod 405 is connected to the inner hole boss of the impact hammer body 403 through the shou...

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Abstract

The invention discloses a square type lithium cell full automation vacuum capper that includes rack, high speed pressure unit, cell clamp and steel ball distributing device which is between the high speed pressure unit and cell clamp; the steel ball distributing device includes pin guiding unit of the press pin and steel ball distributing unit; the pin guiding unit includes several press pins; the steel ball distributing unit includes giving ball plate which can horizontal shift, several steel ball holes which are corresponding with said press pins are set on the giving ball plate; the other limit position of the giving ball plate is that the steel ball holes are corresponding with steel ball storehouse mouth; the pin guiding unit, cell storehouse and the press pin are separately shift under the drive of movement unit; using the cell sealing craft of the capper, when the steel ball is given and the press pin is pressed to seal, the cell is always in vacuum condition. It avoids the phenomenon of rebound of cell thickness and tympanites, and guarantees perfect vacuum and reliable tightness.

Description

technical field [0001] The invention relates to a battery sealing device and a sealing method thereof, in particular to a lithium ion battery sealing device and a sealing method thereof. Background technique [0002] With the development of miniaturization of portable electrical appliances, prismatic lithium-ion batteries, which occupy less equipment space and are more convenient to manufacture, are widely used. At present, the production process of a square lithium-ion battery is usually: winding of the pole piece group - the pole piece group is put into the shell - welding of the electrode and the battery cover - seamless welding of the battery shell and the cover - injection of electrolyte - formation ——Vacuum sealing——Manual sealing——Secondary formation——Cleaning. Since there is no equipment suitable for sealing square lithium-ion batteries with mature technology, the vacuum sealing method involved in the above-mentioned production process still adopts a simple and orig...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/00H01M10/40H01M10/058H01M50/00
CPCY02E60/122Y02E60/10Y02P70/50
Inventor 马传声宁宪刚张学群
Owner 天津丰泽科技有限公司
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