-What are the reasons for thermal runaway of power lithium battery packs?

What are the reasons for thermal runaway of power lithium battery packs?
author:enerbyte source:本站 click146 Release date: 2023-12-18 08:30:00
abstract:
The occurrence of thermal runaway in the power lithium-ion battery pack means that there is a safety issue with the battery pack, which needs to be dealt with in a timely manner, otherwise it may cause danger and loss to the user. Since the occurrence of thermal runaway in p...

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The occurrence of thermal runaway in the power lithium-ion battery pack means that there is a safety issue with the battery pack, which needs to be dealt with in a timely manner, otherwise it may cause danger and loss to the user.

Since the occurrence of thermal runaway in power lithium-ion battery packs is a very dangerous thing, it is also important to understand the causes and solutions of thermal runaway. It is best to get a warning from the cause of the occurrence. When using lithium-ion battery packs, attention should be paid to prevent the occurrence of thermal runaway.

Reasons for thermal runaway of power lithium-ion battery packs

Mechanical abuse

Under the influence of external forces, the lithium-ion battery pack undergoes deformation and relative displacement in different parts of itself. The lithium-ion battery pack cells are also subjected to external forces, causing internal collisions, squeezing, and punctures, which are also considered mechanical abuse.

In the abuse of machinery, the most dangerous one is puncture, where the conductor is inserted into the battery body, causing a direct short circuit between the positive and negative poles. Compared to collisions, squeezing, etc., it is only a probability that internal short circuits occur. The heat generated during the puncture process is more intense, and the probability of heating out of control is higher.

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