Easy.
Ternary lithium batteries are widely used in the field of electric vehicles due to their high energy density, which also means that under certain conditions, high temperature, overcharging and physical damage will cause. A thermal runaway occurs inside the battery, causing it to spontaneously ignite. Thermal runaway is a process in which the internal short circuit of the battery causes the exothermic reaction to intensify, causing the battery temperature to increase rapidly, ultimately leading to combustion and explosion of the battery.
Ternary lithium batteries have higher energy density and better performance, but the risk of spontaneous combustion is also relatively high. To reduce the risk of spontaneous combustion, a series of safety designs and optimizationsSecurity are needed in terms of battery management systems, battery structures and materials.