The key technology of new energy electric vehicle lies in the charge discharge technology and safety performance of its high energy density lithium battery. Lithium battery must keep excellent waterproof and dustproof effect in the process of use, and easy to heat and self ignition is the first problem affecting its safe use. Under extreme conditions such as rainstorm, shoal and haze, in order to meet the requirements of sealing and buffering protection of power battery during driving, Tesla and other American automobile enterprises take the lead in applying foamed silica gel to power battery.

For example, in order to reduce the weight and improve the safety of Tesla Model 3 battery pack package, a large number of silicone foam potting materials are used to protect a single cell. Because of Tesla's benchmarking role in power battery pack technology, it greatly accelerates the application and promotion of silica gel foam material in power battery pack package.