Water can react with the electrolyte in the cell to produce gas. When charging, it can react with the generated lithium to produce lithium oxide, which causes the loss of the capacity of the cell and is easy to generate gas by overcharging the cell. The decomposition voltage of water is low, and it is easy to decompose and generate gas when charging. The cell will explode.

● Internal short circuit

Due to the internal short-circuit phenomenon, the battery current discharge, there is a lot of heat, burn the diaphragm, and cause a larger short-circuit phenomenon, so the lithium cell will appear high temperature, the electrolyte decomposition into gas, causing the internal pressure is too large, when the cell shell can not bear the pressure, the cell will explode.

● Upper glue

Laser welding, heat conduction through the shell to the positive ear, so that the positive ear temperature is high, if the upper adhesive paper does not separate the positive ear and diaphragm, the hot positive ear will make the diaphragm paper burned or contracted, resulting in internal short circuit, and the formation of explosion.

● High temperature adhesive paper wrap the negative ear

Customers in the negative ear spot welding, heat conduction to the negative ear, if the high temperature adhesive paper is not pasted well, the heat on the negative ear will burn the diaphragm, resulting in internal short circuit, the formation of explosion.

● The bottom glue does not completely cover the bottom

Customers spot welding at the bottom of the aluminum nickel composite belt, there will be a lot of heat in the bottom shell wall, the bottom of the conductive pole core, if the high temperature adhesive paper is not completely wrapped in the diaphragm, it will burn the diaphragm, resulting in internal short circuit, the formation of explosion.