铁锂电池安全吗？

1.针刺、短路、挤压

当铁锂电池出现短路、针刺或挤压的时候，会导致内部隔膜破裂从而引发温度突然爆炸式升高，最终出现爆炸的情况，特别是安全性能差的锂电池，这个时间将会更加短，一般5秒左右就会爆炸。

2.热冲击

所谓的热冲击就是环境温度突然升高的现象，如果温度较高，那么会导致锂电池负极表面SEI膜出现分解，从而引发放热反映，电池散热如果不好，那么内部温度就会迅速升高，从而出现爆燃现象。

3.过充

如果对锂离子电池进行过充，那么多余的电能会转化为热能，因此导致电池本体温度升高出现损坏的情况。往往这个问题会出现在一些没有过充保护的充电器或电子产品上。

Is lithium iron battery safe?

1. Needling, short circuit and extrusion

When the iron lithium battery is short circuited, punctured or squeezed, it will lead to the rupture of the internal diaphragm, which will lead to a sudden explosive rise in temperature. Finally, there will be an explosion, especially for lithium batteries with poor safety performance. This time will be even shorter, usually about 5 seconds.

2. Thermal shock

The so-called thermal shock is the phenomenon that the ambient temperature rises suddenly. If the temperature is high, the SEI film on the negative electrode surface of the lithium battery will decompose, which will lead to an exothermic reaction. If the heat dissipation of the battery is poor, the internal temperature will rise rapidly, resulting in deflagration.

3. Overcharge

If the lithium-ion battery is overcharged, the excess electric energy will be converted into heat energy, which will lead to the temperature rise of the battery body and damage. This problem often occurs in some chargers or electronic products without overcharge protection.