Excessive moisture content
Water and electrolyte of lithium batteries, gas processing, charging, lithium reactions can be generated and generate lithium oxide, make batteries capacity loss, easy to make batteries overcharge and gas production, water analysis of low voltage, charging is easy to analysis the generated gas, when the series of the generated gas can make the batteries of internal pressure, when the husk of batteries can't afford to, Lithium-ion batteries explode.
⒉ Internal short circuit
Due to the internal short circuit phenomenon, the cell large current discharge, a lot of heat, burn the diaphragm, and cause a larger short circuit phenomenon, so that the cell will appear high temperature, the electrolyte analysis into gas, resulting in the internal pressure is too large, when the cell shell can not withstand the pressure, the cell will explode.
C. the overcharge
When the battery is overcharged, the lithium excessive release of the positive electrode will make the structure of the positive electrode change, and the lithium released too much is easy to insert into the negative electrode, but also easy to cause the lithium surface of the negative electrode, and when the voltage reaches more than 4.5V, the electrolyte will analyze and process a large number of gases. All of which could have caused an explosion.
4. External short circuit
External short circuit may be caused by improper operation, or misuse, due to the external short circuit, battery discharge current is very large, will make the core of the heat, high temperature will make the core of the diaphragm contraction or completely bad, resulting in lithium ion battery internal short circuit, and explosion.
