Under the wave of global electrification of automobiles, mainstream domestic and foreign car companies have increased their strategic layout of new energy vehicles, and new energy vehicles have entered a market driven high-speed growth period. The new energy vehicle market in our country maintains a rapid development trend. New energy vehicle batteries, electronic controls, and motors all use thermal interface materials such as thermal conductive materials and thermal conductive adhesives, which are expected to drive the demand for spherical alumina fillers.

Electronic control: In order to reduce the thermal resistance of the heat source and water circuit, and improve the thermal conductivity efficiency of the module, it is usually necessary to apply thermal grease to the rigid interface between the IGBT module and the cold plate. With the filling of thermal conductive interface materials (such as thermal conductive silicone grease), the contact surface between the heat source and the heat sink will be fully in contact, which can significantly reduce the interface thermal resistance, significantly improve the heat dissipation effect, and reduce electrical losses.

Motor: In the drive motor, the stator is used to generate rotational magnetism. High thermal conductivity adhesive is usually used to encapsulate the stator as a whole, which can reduce the thermal resistance between the winding and the stator core, improve the thermal conductivity of the insulation system, and reduce the temperature rise of the motor by about 10-18 ℃, thereby improving the reliability of safe operation of the motor.
In the field of power batteries: As the "heart" of new energy vehicles, the thermal monitoring and management of power batteries are directly related to the overall performance of the vehicle, and have significant implications for the safe operation of the vehicle. Thermal conductive fillers used in power batteries, such as aluminum hydroxide, angular alumina, and spherical alumina, can all meet the needs of use. Considering the importance of safety control by power battery manufacturers and the differences in battery module structure and heat dissipation methods, the main thermal conductive filler currently used is spherical alumina, which serves as a thermal conductive and flame retardant material

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