The explosion of battery packs at rest or use, this situation with the battery packs was rare as the fire, but will cause serious consequences. This also caused by the external or internal short circuit. External short circuit is equivalent to the moment of ultra large current discharge and over the limit of the battery cells protection; the internal generation of gas will be instantly emitted, it’s very dangerous. Internal short circuit and the sealing effect of the diaphragm will also be an explosion.
To prevent external short circuit, battery packs can use protection circuit board. The protection board has the function of short circuit and over current protection which can completely eliminate the risk. But the battery internal short circuit must be eliminated by improving the process and using the safe and reliable materials.
The problems that may arise from the use of the battery packs above can be seen engineering, process problems, charger, protection board problems, appliances and appliances docking problem, the operation and usage are inappropriate will may make the battery packs failure. So in the process of review, design, production and materials selection, we must avoid these risks and guide customers to use the battery packs correctly to ensure the safety of the battery packs.