The first type is that the lithium battery packaging is damaged or seriously damaged. You should know that there is a film inside the battery. This film protects the battery. Therefore, when hit hard or pierced by other sharp objects, the battery separator will be damaged, which is one of the reasons for the explosion of lithium batteries.
The quality of the second type of lithium battery shipped from the factory is problematic. In order to reduce the manufacturing cost of lithium batteries, some manufacturers use other scrap materials to modify lithium batteries. Lithium batteries like this do not have brand certification or quality certificates. All three are products without lithium batteries. As this type of battery is not guaranteed, leaks and explosions may occur during use. Therefore, when purchasing batteries, you shouldask if the manufacturer is compliant and legal.
The third situation is that the temperature of the lithium battery is too high. It is possible that when charging an electric vehicle, an unsuitable charger is selected for the battery. If the charger frequency is too high, the output current will be too large. This will cause the lithium battery to heat up. If the heat cannot be dissipated for a long time, the battery will spontaneously ignite. Therefore, when charging the battery, you must choose a suitable charger. Do not choose a high or low level, otherwise it will seriously damage the battery.