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Airtight testing method for soft pack lithium battery

A soft-pack lithium battery and airtight detection technology, which is applied in the direction of detecting the appearance of fluid at the leakage point and using liquid/vacuum degree for liquid tightness measurement, etc., can solve the problems of easy missed judgment and low detection accuracy

Active Publication Date: 2022-06-28
HUNAN HONGYI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Based on this, it is necessary to provide an airtight detection method for soft-pack lithium batteries with high detection accuracy in view of the problems of low detection accuracy and easy misjudgment in the existing leak detection methods for soft-pack lithium batteries

Method used

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  • Airtight testing method for soft pack lithium battery
  • Airtight testing method for soft pack lithium battery

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Embodiment Construction

[0029] In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the related drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that a thorough and complete understanding of the present disclosure is provided.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed it...

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Abstract

The invention relates to an airtight detection method for a soft-pack lithium battery. The airtight detection method of the soft-pack lithium battery includes the steps of: putting the battery cell into the cell area, putting the air bag into the air bag area; packaging the top sealing area, side sealing area and sealing area; puncturing the air bag area, And extract the gas in the airbag area; squeeze the airbag to rupture the airbag, and then release the gas to be tested; guide the gas to be tested released by the airbag to the battery cell area; seal the second sealing area; detect whether the soft pack lithium battery has The detected gas escapes. The airtight detection method of the soft-packed lithium battery provided by the present invention is to place the air bag containing the gas to be tested in the air bag area of ​​the aluminum-plastic case, and after the air bag area is pumped, the air bag is squeezed, and the Guide the gas to be tested to the cell area, and then package the second sealing area to obtain a soft-packed lithium battery, and then conduct an air-tight test on the soft-packed lithium battery to directly obtain the result of the packaging effect of the soft-packed lithium battery, with high detection accuracy. There will be no missed judgments.

Description

technical field [0001] The invention relates to the technical field of battery airtightness detection, in particular to a method for airtightness detection of a soft-pack lithium battery. Background technique [0002] Soft pack lithium battery is a common lithium battery, which has the advantages of good safety performance, light weight, large capacity, small internal resistance, and flexible shape design. [0003] The internal chemical system of lithium batteries is very active, and it is very easy to have side reactions with external moisture and air, resulting in battery performance degradation or failure. Therefore, the air tightness of packaging is crucial to the reliability and safety of lithium batteries. How to effectively detect the airtightness of soft-pack lithium batteries and ensure that defective packaging products will not flow into the consumer market is of great significance. [0004] However, the existing leak detection methods of the pouch lithium battery...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/20
CPCG01M3/20
Inventor 胡忠汉
Owner HUNAN HONGYI TECH CO LTD
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