Aqueous graphene high-thermal-conductivity anticorrosive coating material for power batteries, and preparation method thereof

Abstract

The invention relates to an aqueous graphene high-thermal-conductivity anticorrosive coating material for power batteries, and a preparation method thereof, wherein the aqueous graphene high-thermal-conductivity anticorrosive coating material is a two-component coating material, and is prepared by mixing an aqueous heat-resistant resin as a film-forming matrix, graphene powder, a thermal conducting filler, an antirust filler and other functional aids. According to the invention, with the coating material, the problems of reduced use stability and reduced safety caused by closed working environment and difficult heat dissipation of the existing power battery are solved, and the corrosion protection performance is improved while the heat-conducting property of the coating is improved; by using the temperature-resistant aqueous resin as the coating film-forming matrix, the organic matter emission of the coating material is reduced so as to protect the ecological environment; and by introducing the novel graphene carbon material with high heat conductivity coefficient, unique lamellar structure and small size effect, the problem of insufficient heat conductivity of the traditional heat-conducting coating material is solved, and the heat dissipation performance and the corrosion resistance of the coating material are further improved.

Description

technical field [0001] The invention relates to the field of chemical materials, in particular to a water-based graphene high thermal conductivity anticorrosion coating for power batteries and a preparation method thereof. Background technique [0002] As the "heart" of electric vehicles, power batteries play a vital role in the operation of new energy electric vehicles. At present, most electric vehicles in my country use lithium batteries as the main raw material of power batteries, which have large working current and heat production. At the same time, the power battery is in a relatively closed environment, which can easily lead to a rise in the temperature of the battery and its surroundings, and excessive heat will cause potential safety hazards for the battery. In order to avoid the above problems, measures need to be taken to reduce the operating temperature of the power battery. A common solution is to use a heat-conducting silicone sheet inside the battery to dis...

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Problems solved by technology

[0004] Aiming at the problem that the working environment of the power battery is closed and the heat is not easy to dissipate, the use stability and safety are reduced, and the present invention proposes a water-based graphene high thermal conductivity anti-corrosion coating for the power battery and its preparation method, which can improve the thermal conductivity of the coating while improving the thermal conductivity. Improve its corrosion protection performance

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