The important reasons for the explosion of lithium-ion batteries are explained

If the circuit is out of control or the detection cabinet is out of control, the charging voltage is greater than 5V, causing the electrolyte to parse, the battery will generate a violent echo, the battery internal pressure will rise rapidly, and the lithium ion battery will explode. 2. Overcurrent explosion protection circuit is out of control or detection cabinet is out of control, so that the charging current is too large and lithium ions are too late to be inserted, and lithium metal is formed on the appearance of the pole piece, penetrating the barrier, and the positive and negative electrodes are directly short-circuited and causing an explosion. 3. Explosion during ultrasonic welding of plastic case. When ultrasonic welding of plastic case is caused by the equipment, the ultrasonic energy is transferred to the battery core. The large ultrasonic energy melts the internal partition of the battery, and the positive and negative electrodes are directly short-circuited, resulting in an explosion. 4. Explosion during spot welding. Excessive current during spot welding caused serious internal short-circuits and exploded. In addition, during spot welding, the positive electrode connecting piece was directly connected to the negative electrode, causing the positive and negative electrodes to directly short-circuit and explode. 5. Over-discharge explosion Li-ion battery over-discharge or over-discharge (above 3C) will easily dissolve and deposit the negative electrode copper foil on the barrier, making the positive and negative electrodes directly short-circuit and explode (rarely). Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous post: The essentials for the acceptance and operation of used lithium ion battery packs