English
German
Spanish
Japanese
Korean
Russian
French
Indonesian
Dutch
Why do lithium batteries explode and catch fire?
Many friends only know that lithium batteries will explode, but they do not know why lithium batteries explode and catch fire. This article combines the structure of lithium batteries to talk about the reasons for lithium batteries to explode.
Why do lithium batteries explode and catch fire?
The explosion of lithium batteries has a lot to do with its internal structure. Most lithium batteries explode and catch fire because the internal temperature of the battery increases, the electrolyte vaporizes, and the shell expands. The expansion force exceeds the shell and the pressure relief valve (protection valve). ), the phenomenon of explosion and combustion will occur, but not all lithium batteries will explode after short circuit or electrolyte vaporization, such as the most common "battery bulge", which is caused by the vaporization of electrolyte, but because lithium There is a "pressure relief valve" in the battery, which can prevent the battery from exploding to a certain extent.
What are the reasons for the explosion of lithium batteries?
There are many reasons for the explosion of lithium batteries, such as poor battery sealing, structural problems, electrolyte quality problems, the existence of pole piece dust, poor pole piece manufacturing process, etc., but no matter where the problem is, it will eventually lead to the battery. The internal temperature rises, and then the electrolyte vaporizes and explodes and burns. But there is one thing to be clear. If the casing of the lithium battery is not damaged and the pressure relief valve is working normally, the battery will bulge instead of exploding. Only after a serious short circuit inside the battery or a large amount of electrolyte vaporization, the battery will burst. After the battery casing or the pressure relief valve, the explosion will occur and the phenomenon of burning will occur.
How likely are lithium batteries to explode?
Although there are cases of lithium battery explosion and combustion in countries around the world, the probability of explosion is not as high as imagined compared to the base of use. Most lithium battery manufacturers limit the charging voltage and charging current, and there are built-in In order to protect the plate, even if there is a short circuit or a micro-short circuit inside, the range of electrolyte vaporization is extremely limited. Although this does not completely prevent the lithium battery from exploding, it has reduced the probability of explosion to an acceptable range. In the existing lithium battery explosion cases, a small part is caused by improper human operation.
Conclusion:
No matter what the object is, its explosion must have a lot to do with temperature, flammability, and expansion. The reason why lithium batteries can explode is because the internal structure changes, causing the battery volume to expand rapidly. Withstanding the strength, it will explode like a "firecracker".
Keheng New Energy's Range Of Products
100AH 12V Low Temperature Heating Enable
Low Temperature 24V 60AH Battery
Recommended reading
What Are The 11 Best Deep Cycle Marine Batteries?
Battery Knowledge
