Why does the lithium iron phosphate battery explode?

Lithium iron phosphate battery explosion 1. Excessive water content. Water can react with the electrolyte in the battery cell, and process gas. When charging, it can react with the generated lithium to generate lithium oxide, which will cause the capacity of the battery to be lost and easy to use. The cell is overcharged to generate gas, and the decomposition voltage of water is low, and it is easy to decompose to generate gas during charging. When this series of generated gas will increase the internal pressure of the cell, when the shell of the cell cannot withstand it, The battery will explode. 2. Internal short circuit. Due to the internal short circuit phenomenon, the large current discharge of the battery cell will cause a lot of heat, which will burn the diaphragm and cause a greater short circuit phenomenon. In this way, the battery core will have a high temperature, causing the electrolyte to decompose into gas, causing the internal If the pressure is too high, when the shell of the battery cell cannot withstand this pressure, the battery cell will explode. 3. When the upper adhesive is laser welded, the heat is conducted to the positive ear through the shell, which makes the temperature of the positive ear high. If the upper adhesive paper does not separate the positive ear and the diaphragm, the hot positive ear will cause the diaphragm paper to burn out or shrink. Causes an internal short circuit, which causes an explosion. 4. When the customer spot welding the negative ear with high-temperature adhesive paper, the heat is conducted to the negative ear. If the high-temperature adhesive paper is not properly attached, the heat on the negative ear will burn the diaphragm, causing an internal short circuit and an explosion. 5. If the bottom glue is not completely covered by the bottom, when the customer spot welding at the bottom aluminum-nickel composite tape, a large amount of heat will appear on the bottom shell wall, which will conduct the bottom of the pole core. If the high temperature adhesive tape does not completely cover the diaphragm, it will burn. The diaphragm is broken, causing an internal short circuit and an explosion. 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 technical parameters of UPS lead-acid batteries?