When designing the battery system, two electronic protection must be provided for over -charged, over -loading, and over -current. After removing the protective board, charging, if the battery explodes, it means poor design. Although the above method provides two protection, because consumers often buy non -original chargers after the charger is broken, and the charger industry, based on cost considerations, often removes the charging controller to reduce costs to reduce costs Essence As a result, inferior coins expelled good coins, and many inferior chargers appeared on the market. This caused the overcoming protection to lose its first and most important line of defense. And over -charging is the most important factor that causes battery explosion. Therefore, inferior chargers can be regarded as the culprit of battery explosion. Of course, not all battery systems use the above solutions. In some cases, there will be a charging controller in the battery pack.

Last line of defense: If the protection measures of electronics fail, the final line of defense will be provided by the battery. The safety level of the battery cells can be slightly distinguished according to whether the battery can be distinguished through the external short circuit and overcoming. Because before the battery explosion, if the lithium atoms are accumulated on the surface of the material, the explosion power will be greater. Moreover, excessive protection often has only one line of defense because consumers use inferior chargers. Therefore, the capacity of the battles is more important than anti -external short -circuit capabilities. Compared with the safety of aluminum shell cells and steel shell cells, aluminum shells have high safety advantages.