Views: 1 Author: Site Editor Publish Time: 2023-09-18 Origin: Site
With the massive application of lithium batteries in the industries such as electric cars, energy storage, electronics and aerospace, the safety of lithium batteries has become a great concern to society. Thermal runaway is an important cause of lithium battery safety accidents, which can cause lithium batteries to catch fire or even explode, directly threatening the safety of users.
When the battery thermal runaway occurs, the temperature and voltage of the battery will change, and a series of chemical reactions will occur in the internal materials of the battery, generating a large amount of heat and releasing flammable and toxic gases. The flammable gas may cause violent combustion or even explosion when it meets external air at high temperature, then leading to thermal runaway of other batteries. The gases generated by thermal runaway or secondary combustion or explosion will pollute the environment or pose a hazard to personnel.
Generally, the study of battery thermal runaway and secondary hazards generally from the following:
The way or study of the principle of thermal runaway.
The temperature, and voltage changes of the battery caused by thermal runaway.
Analysis of the composition and content of the gases produced by thermal runaway.
Flammability and explosive properties of the gases generated by thermal runaway.
The burning velocity of the gas produced by thermal runaway.
Heat release, smoke production, thermal radiation, etc. during thermal runaway.
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