Graphene heat dissipation assembly special for electric automobile and having low thermal resistance, high compressibility and buffering function and preparation method thereof

• Main Authors: LIN YIJUN, ZHU XIYUN, ZHU HAIKUAN
• Format: Patent
• Language: Chinese; English
• Published: 09.07.2021
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY

The invention relates to a graphene heat dissipation assembly special for an electric automobile and having low thermal resistance, high compressibility and a buffering function and a preparation method of the graphene heat dissipation assembly. The graphene heat dissipation assembly comprises a top-layer graphite sheet, a graphite sponge composite cylinder and a bottom-layer graphite sheet which are sequentially connected from top to bottom. The graphite sponge composite cylinder comprises a modified cylinder sponge and a coated graphite sheet, wherein the coated graphite sheet is wound and coated on the surface of the modified cylinder sponge. According to the graphene heat dissipation assembly special for the electric automobile, the sponge micropore structure can absorb external impact force, and a battery assembly of the electric automobile is protected; meanwhile, the graphene filled in the sponge micropores can conduct heat energy,thereby reducing the thermal resistance of the battery pack and improvin