What are the situations in which lithium batteries explode?

Lithium battery explosions generally have the following situations: 1. The overcharge explosion protection circuit is out of control or the detection cabinet is out of control, causing the charging voltage to be greater than 5V, causing the electrolyte to decompose, a violent reaction inside the battery, the battery's internal pressure rises rapidly, and the lithium battery explodes. 2. The overcurrent explosion protection circuit is out of control or the detection cabinet is out of control, so that the charging current is too large and the lithium ions are too late to be inserted, and lithium metal is formed on the surface of the pole piece, penetrates the diaphragm, and the positive and negative poles are directly short-circuited to cause an explosion (rarely). 3. Explosion during ultrasonic welding of plastic shells. When ultrasonic welding of plastic shells occurs, the ultrasonic energy is transferred to the battery core due to the equipment. The large ultrasonic energy melts the internal diaphragm of the lithium pool, and the positive and negative electrodes are directly short-circuited and an explosion occurs. 4. Explosion during spot welding. Excessive current during spot welding caused serious internal short-circuit explosion. In addition, during spot welding, the positive electrode connecting piece was directly connected to the negative electrode, causing the positive and negative poles to directly short-circuit and explode. 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: How to repair the maintenance-free UPS battery?