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Air extraction mechanism and air extraction device with the air extraction mechanism

A technology of air extraction mechanism and air extraction device, which is applied in the direction of electrical components, structural parts, climate sustainability, etc., and can solve the problems of electrolyte and exhaust gas being easily out of control, electrolyte and exhaust gas being difficult to extract, and insufficient internal vacuum and other problems, to achieve the effect of simple structure, sufficient vacuum degree and high pumping efficiency

Active Publication Date: 2018-03-02
DONGGUAN TEC RICH ENGINEERING CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above method produces a vacuum gradient due to the distance between the interior of the battery and the cavity, so that the internal vacuum is insufficient, the electrolyte and waste gas are not easy to be pumped away, and part of the electrolyte and waste gas is easily out of control when pumped away, resulting in the contamination of the battery body

Method used

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  • Air extraction mechanism and air extraction device with the air extraction mechanism
  • Air extraction mechanism and air extraction device with the air extraction mechanism
  • Air extraction mechanism and air extraction device with the air extraction mechanism

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Embodiment Construction

[0023] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0024] like figure 1 As shown, the soft-pack lithium battery 2 includes an air bag 21 and a battery cell (not shown) located in the air bag 21. After liquid injection, the upper opening of the soft-pack lithium battery 2 is packaged for the first time, and then packaged. The soft-pack lithium battery 2 is formed, and the waste gas and excess electrolyte produced by the formation are extracted using the air extraction device 1 provided by the present invention, and the second packaging is carried out after the extraction is completed. Specifically, the air pumping device 1 vacuumizes the inside of the airbag bag 21 after piercing the airbag bag 21 through a suction port, and the suction port is located between the first packaging line and the second packaging line.

[0025] continue to refer figure 1 The air extraction device 1 provided by the pre...

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Abstract

The invention discloses an air pumping mechanism, which includes a suction cup, a vacuum tube, a needle and a needle driving mechanism; the vacuum tube is a hollow structure and includes a cavity extending along its length, and the suction cup is used for being adsorbed on a soft-packed lithium battery The airbag bag, the rear end of the suction cup is hermetically sleeved on the front end of the vacuum tube and communicated with the through cavity of the vacuum tube, the needle driving mechanism is sealed and arranged at the rear end of the vacuum tube and It has an output shaft that protrudes into the through cavity and can slide back and forth. The needle is accommodated in the through cavity and its rear end is fixedly connected with the output shaft. A vacuum hole communicating with the through cavity is provided between them. The air extraction mechanism of the invention has simple structure and high air extraction efficiency. The invention also provides an air extraction device with the air extraction mechanism.

Description

technical field [0001] The invention relates to an air extraction device for a soft-pack lithium battery, in particular to an air extraction mechanism. Background technique [0002] Lithium batteries have the advantages of high energy, high battery voltage, wide operating temperature range, long storage life and small size, and have been widely used in military and civilian small electrical appliances. In the production process of soft-pack lithium batteries, a necessary step is to use the air bag to inject electrolyte and seal the seal after pumping out excess electrolyte and waste gas generated by chemical formation. Therefore, air extraction is an indispensable step for soft-pack lithium batteries. Key processes. From the perspective of the production process of soft-pack lithium batteries, most of the processes are to place the battery to be pumped in a closed cavity for pumping and sealing. In the above method, due to the vacuum gradient generated by the distance betw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/04H01M10/058H01M6/14H01M2/36H01M50/609H01M50/618
CPCH01M6/14H01M10/04H01M10/058H01M50/691H01M50/60H01M50/636Y02E60/10Y02P70/50
Inventor 袁小东陈浩淞刘红尧
Owner DONGGUAN TEC RICH ENGINEERING CO LTD
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