Under the background of energy crisis and environmental pollution, lithium-ion battery, as an ideal energy for the development of the 21st century, has attracted more and more attention. However, some failures will occur in the production, transportation and use of lithium-ion batteries. And the failure of a single battery will affect the performance and reliability of the whole battery pack, and even cause the battery pack to stop working or other safety problems.

Next, Dongguan Yunsheng lithium battery and you learn about the failure factors of lithium battery.

1. Classification of lithium battery failure

In order to avoid the above performance degradation and battery safety problems, it is imperative to carry out failure analysis of lithium battery. Lithium battery failure refers to the battery performance degradation or abnormal performance caused by some specific essential reasons, which can be divided into performance failure and safety failure.

2. Causes of lithium battery failure

The causes of lithium battery failure can be divided into internal and external causes.

Internal cause mainly refers to the nature of physical and chemical changes of failure. The research scale can be traced back to the atomic and molecular scale, and the thermodynamic and dynamic changes of failure process can be studied.

External causes include impact, acupuncture, corrosion, high temperature combustion, human destruction and other external factors.