EV battery

The important reason for the short circuit of lithium iron phosphate battery

by：Vglory 2021-03-24

There are burrs on the surface of the electrode, which pierced the diaphragm and caused a short circuit between the positive and negative electrodes, or caused by improper manufacturing process; ②The short circuit caused by the overheating of the lithium battery during use and the melting of the diaphragm. The micro short circuit is mainly caused by the burr of the battery plate, and the large current discharge can sometimes be eliminated. The micro short circuit caused insufficient voltage. In the process of using lithium metal batteries, because the crystallization of metal lithium forms dendritic crystals, it is easy to cause micro short circuits and severely cause large short circuits. Low temperature is also easy to cause micro short circuit of lithium battery. ③The quality of the diaphragm is poor. The quality of the diaphragm of the lithium battery cell is not up to the standard, and the lithium battery pack is often charged and discharged with high current during use. The diaphragm cannot withstand the huge flow of lithium ions in a short period of time. The battery core heats up violently, causing damage. ④If the temperature of the lithium iron phosphate battery in the leaking liquid rises slowly, the outer casing gradually melts, and the protective layer does not serve the purpose of protection, resulting in the leakage of corrosive electrolyte. Then it will cause the battery to short circuit. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: What are the factors that affect the internal resistance of lithium batteries?

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