Reasons for self discharge of 3C lithium battery

　　(1) Poor isolation, uniformity, electronic insulation and tensile strength of diaphragm

　　(2) Powder loss of pole piece, dislocation of winding, burr of liquid collector, etc

　　(3) The diaphragm contains conductive substances, electrolyte and electrode active substances

　　resolvent

　　(1) In order to standardize the manufacturing process of 3C lithium battery and make the battery performance stable, it is necessary to test the manufactured 3C lithium battery and use the battery test module as auxiliary equipment. The battery test module can ensure the stability test of 3C lithium battery and avoid current attenuation or card insertion. The high current spring sheet microneedle module is a relatively high quality battery test module, which is exclusively manufactured by Kaizhitong and has excellent performance. From the appearance, the high current spring sheet microneedle module is an integrated spring sheet design, which can transmit current within the range of 1-50a. The current flows in the same material at a constant voltage without current attenuation. In terms of performance, the high current spring chip microneedle module can adapt to the testing of 3C lithium battery in the field of small spacing.

　　(2) It can maintain stable connection between 0.15 mm and 0.4 mm without pin jamming. In use, the average service life of the high current spring sheet microneedle module can reach 20W times. Under good environment and operation and maintenance conditions, it can be used continuously up to 50W times. For 3C lithium battery test, using high current spring micro needle module as the battery test module can not only improve the test efficiency, but also reduce the test cost. The purpose of 3C lithium battery test is to screen out the batteries with unqualified technology and performance, so as to avoid excessive self discharge of the battery and affect the use of 3C lithium battery. Therefore, the high current spring micro needle assembly plays a very important role in the test of 3C lithium battery.

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