What are the situations of battery explosion?

Several situations of battery explosion 1. The overcharge explosion protection circuit is out of control or the detection cabinet is out of control, so that the charging voltage is greater than 5V, causing the electrolyte to decompose, a violent reaction occurs in the battery, the internal pressure of the battery rises rapidly, and the 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 embedded, and lithium metal is formed on the surface of the pole piece, penetrates the diaphragm, and the positive and negative electrodes are directly short-circuited and cause an explosion. 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 causes the internal diaphragm of the battery to melt, 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. 5. Over-discharge explosion The over-discharge or over-current discharge (above 3C) of the battery will easily dissolve and deposit the negative electrode copper foil on the diaphragm, causing the positive and negative electrodes to directly short-circuit and explode. 6. When the battery is dropped due to vibration, the internal pole piece of the battery is misaligned due to severe vibration or drop, which causes a serious short-circuit and explodes (rarely). 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 differences between UPS batteries and EPS batteries?