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 of the module and improve the safety of the Tesla Model 3 battery pack package, a large number of silicone foam potting materials are used to protect a single cell, which can limit the heat transfer from the upper part of the battery pack to the cell in a certain period of time, leading to thermal runaway. 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.

At present, there are mature liquid silicone foam silicone sheets with similar properties in China.

At the same time, foamed silica gel is also widely used for light leakage prevention, dust prevention, shock absorption and air tightness treatment around led, as well as noise prevention and gap filling treatment around loudspeaker and sound.

Application of foaming silica gel in LED / horn