Selection of Hardness of Thermal Conductive Silicon Film in New Dynamic Source Power Battery

Usually, when choosing thermal conductive silicone film, our primary concern is the conductivity coefficient of the product. The high or low thermal conductivity coefficient directly affects the efficiency of heat transfer. Thermal conductive silicone film itself does not have a heat dissipation effect, only a conduction effect. The heat source is transmitted to the radiator or shell through the thermal conductive silicone film, thereby reducing the temperature of the heat source. Therefore, the selection of thickness and hardness of the thermal conductive silicone film is particularly crucial in thermal design.

Generally, power batteries and battery modules have a relatively large surface area compared to consumer electronics products. If the thermal conductive silicon film is chosen to be relatively soft in hardness, it is not convenient for construction operations. If it is relatively soft, it is easy to deform the thermal conductive silicone sheet during construction, and the assembly area is also difficult to control. Therefore, it is recommended to choose a hardness of about 50 for both battery packs and power batteries on battery modules.