What is the fundamental reason for the fire and explosion of polymer lithium batteries.

What is the fundamental reason for the fire and explosion of polymer lithium batteries.

Polymer lithium batteries have the advantages of high energy density, small size, ultra-thin, lightweight, and high safety. This is a new type of battery. In terms of shape, polymer lithium batteries have the characteristic of being ultra-thin and can be made into batteries of any shape and capacity with various products. This type of battery has a minimum thickness of 0.5mm and no memory effect.

Lithium ion battery products made of flexible packaging and polymer electrolytes. Under normal circumstances, there will be no explosion during use and storage, unless it is caused by strong human damage resulting in a short circuit. Currently, most polymer lithium batteries are soft packaged batteries. Aluminum plastic film is used as the outer shell. Internally using electrolyte, even if the liquid is very hot, it will not explode. Liquids simply break naturally.

However, nothing is absolute. If the current is large enough, it is not impossible for a short circuit to occur and the battery to self ignite or explode. The emergence of mobile phones and tablets is mostly caused by this situation.