METHOD FOR TESTING AIRTIGHTNESS OF BATTERY CELLS

Abstract: provided is a method for testing airtightness of battery cells, configured for testing the airtightness of the battery cells before liquid injection to screen out ng products. the method adds the pretesting of the battery cells before the initial testing and retesting of the battery cells, so that ng battery cells with a large leakage rate can be screened out in advance, thereby reducing the number of battery cells to be tested entering the following initial testing and retesting of the battery cells, and reducing the equipment area occupied by the retesting working station. further, the method can achieve fast-paced helium testing and loading/unloading through two chambers that can perform helium testing, loading and unloading alternately, shortening the waiting time for mechanical actions during the initial testing, improving the efficiency of the helium testing, and further enhancing the overall work efficiency of the production line.

Inventor(s): WU YING, ZHANGXIANG CHE, JIANHUA FANG

CPC Classification: H01M10/4228 (PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY)

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