Shorting or breaking circuit testing method of polyalcohol flexible packing

Abstract

The invention discloses a short open circuit test method to the polymer flexible packaging, the technical process is that: firstly a general short open circuit detector is prepared, one of the output ends in the detector is modified, namely, the output end is connected with two circuitries with anode and cathode switches in parallel, each circuitry is corresponding to an anode ear and a cathode ear of the batteries, another output end of the detector is connected with a needle shape conductor joint through a composite switch. The detection method is that: firstly each end of two parallel circuitries is correspondingly connected on the anode and the cathode of the batteries, the battery is detected whether is short circuit between the anode and the cathode, afterward the anode circuitry or the cathode circuitry is opened, another needle shape end is pricked into the redundant edge aluminum plastic film to detect whether the anode and the cathode and the plastic film form a short circuit. Adopting the short circuit test method, the batteries liquid leakage and bulge phenomena resulted form the 'box cancer' are avoided, therefore, the reliability of the battery quality is effectively guaranteed.

Description

【Technical field】 [0001] The invention relates to a short-circuit and open-circuit test method, and specifically refers to a short-circuit and open-circuit test method for a polymer flexible package. 【Background technique】 [0002] In the prior art, polymer flexible packaging includes positive and negative plates, a separator placed between the positive and negative plates, tabs welded on the positive and negative plates, and an aluminum-plastic film welded between the positive and negative plates and the tabs . During the processing, due to the special structure of the diaphragm of the outer layer of the flexible packaging or the polymer battery, the positive and negative tabs are easy to contact with the aluminum layer between the aluminum-plastic film of the outer packaging during the battery manufacturing process to form a short circuit. After the battery is charged, the aluminum in the aluminum-plastic film becomes a charged terminal. Through the reaction with the elec...

AI Technical Summary

Problems solved by technology

After the battery is charged, the aluminum in the aluminum-plastic film becomes a charged terminal. Through the reaction with the electrolyte inside the battery, the electrolysis of the external circuit of the battery is formed, thereby corroding the aluminum in the aluminum-plastic film and slowly forming a "box" "cancer" phenomenon, resulting in battery leakage and swelling

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