Rise and Advantage of Silicon-free Thermal Conductive Sheet in Power Battery Thermal Management

Application and Advantage of Thermal Conductive Silicone Sheet

In the thermal management scheme of new energy vehicle power battery, thermal conductive silicone gasket has always been the first choice of thermal management engineers. In many thermal interface materials, why thermal conductive silicone sheet can dominate, become the mainstream choice?

Thermal conductive silicone sheet is widely used in the thermal management of power batteries for new energy vehicles, thanks to its excellent thermal conductivity, as well as its insulation, flame retardancy, shock absorption and buffering, which has won the favor of the market.

The rise of silicon-free thermal conductivity sheet

However, in recent years, another new type of material, silicon-free thermal conductive sheet, is gradually coming into people's field of vision. This silicone-free thermal gasket, with its oxygen-free characteristics, has shown unique advantages in the thermal management of new energy vehicle power batteries, and has gradually become the focus of the industry.

Advantages and Characteristics of Silicon-free Thermal Conductive Sheet

The silicon-free thermal conductive sheet exhibits better performance than traditional silicone thermal conductive gaskets due to its oxygen-free volatilization characteristics and no silicone oil precipitation characteristics in high temperature environments, including reduced thermal resistance and contact thermal resistance. At present, some new energy vehicle manufacturers have adopted a silicon-free thermal conductive sheet design scheme in the power battery thermal management system. Although the traditional silicone thermal gasket will have silicone oil precipitation under high temperature environment, and although its siloxane volatilization amount is less than 0.01, it may still have adverse effects on the battery pack, especially in terms of heat dissipation effect. In contrast, silicon-free thermal gaskets do not have this problem, while combining high insulation and high compressibility. Compared with the thermal conductive silicone sheet of the same grade, its thermal resistance is reduced by about 30%. In addition, the silicon-free thermal pad has a lower hardness than the traditional silicon-free material, thereby providing a higher deformation amount, reducing the contact thermal resistance, and further optimizing the thermal conductivity effect.

Application case of silicon-free thermal conductive sheet

However, its high-performance characteristics also mean a relatively high price, which may be the concern of some customers when choosing. Customers have expressed their willingness to test such materials after learning about the characteristics of silicon-free thermal conductivity sheets. When asked about the price, they said that they could understand the premise that the product performance matched, and thanked us for the free sample test support. After a week of detailed testing, the results show that the silicon-free thermal conductive sheet significantly improves the heat dissipation effect by virtue of its low thermal resistance, large effective contact area and excellent adhesion. At the same time, there is no matter volatilization, precipitation and other problems, ensuring the safety and stability of the battery pack.