With the rapid development of the new energy vehicle industry, the safety and efficiency of battery technology have become the focus of attention in the industry. In this context, as a new type of material, aerogel felt, with its excellent heat insulation performance and lightweight characteristics, has shown great application potential in the field of automotive batteries.
Characteristics and advantages of aerogel felt
Aerogel felt is a flexible thermal insulation felt made of nano silica or metal aerogel as the main material, which is compounded with carbon fiber, ceramic glass fiber cotton or preoxidized fiber felt through special process. Its most remarkable feature is that its thermal conductivity is very low, only 0.02~0.1 W/(m · k), which means that the thermal insulation effect of aerogel felt is 2 to 5 times that of traditional thermal insulation materials.
In addition, the aerogel felt also has good tensile and compressive strength, soft and easy to cut, low density, inorganic fire prevention, overall hydrophobic, green and environmental protection and other characteristics. These characteristics make the aerogel felt an ideal alternative to the traditional flexible thermal insulation materials that are not environmentally friendly and have poor thermal insulation performance.
Application in automotive batteries
1. Thermal protection between battery cells
In the new energy battery fireproof bag, the aerogel felt can effectively insulate the diffusion of heat to the surrounding cells, and protect the surrounding cells from normal operation. When a certain electric core is out of control of heat, the aerogel insulation pad can quickly prevent heat transfer to adjacent electric cores, avoiding domino effect, thus significantly improving the safety of new energy vehicles.
2. Thermal insulation and shock resistance between the power battery module and the housing
The aerogel felt is also widely used for heat insulation and shock resistance between the power battery module and the shell. It can not only reduce the heat loss of battery modules during charging and discharging, but also effectively absorb and disperse vibrations, protecting the battery structure from damage.
3. External cold proof layer and high-temperature insulation layer of battery box
In extreme weather conditions, the aerogel felt can also be used as the external cold proof layer and high temperature insulation layer of the battery box. Its excellent thermal insulation performance helps to achieve more effective battery temperature control and electronic management, reducing the risk of battery thermal runaway.
The application of aerogel felt in the automotive battery field not only improves the safety performance of the battery, but also promotes the technological progress and sustainable development of the entire new energy vehicle industry. With the continuous improvement of technology and the further reduction of cost, the aerogel felt is expected to play a more important role in the field of new energy vehicles, providing safer and more efficient solutions for future green travel.