Battery Manufactory

Causes of fire in lithium-ion batteries The nature of the ignition of lithium-ion batteries is that the heat in the battery fails to be released according to the design intent, causing internal and external combustion materials to ignite after ignition. The main reasons for the fire are external short circuit, external high temperature and internal short circuit. 1). Internal short circuit: due to the abuse of the battery, such as the branch crystal caused by overcharge and overdischarge, the impurity dust in the battery production process, etc., it will deteriorate to pierce the diaphragm, cause a micro short circuit, and the release of electric energy will cause the temperature to rise. The chemical reaction of the material brought about by the increase expands the short-circuit path and forms a larger short-circuit current. This mutually accumulating and mutually reinforcing destruction leads to thermal runaway. 2). External short circuit: Take electric vehicles as...