▎ 摘　　要

NOVELTY - An anti-corrosion and weather-resistant powder coating for battery pack shell, includes a transition layer powder, main functional layer powder and protective layer powder, where the raw materials of the transition layer powder comprises polyester resin, fluorocarbon resin, epoxy resin, phenolic amine curing agent and 2-methylimidazole, the raw materials of the main functional layer powder comprises polyester resin, fluorocarbon resin, triglycidyl isocyanurate, silicon micro-powder and porous nanomaterial loaded with anti-corrosion component, and the raw material of the protective layer powder comprises polyester resin, fluorocarbon resin, hydroxyalkyl amide and nano-graphene. USE - Anti-corrosion and weather-resistant powder coating used for battery pack shell. ADVANTAGE - The coating has good anticorrosive performance and weather resistance, can effectively improve service life of the battery pack. Through the spray method, the coating can be firmly attached to the battery pack shell, and the coating is tightly combined. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for powder spraying method of battery pack shell, which involves: (a) pre-processing the battery pack shell; (b) preheating the battery pack shell at 180-190°C, spraying the transition layer powder on surface of the battery pack shell to form a transition layer, and cooling down the battery pack shell; (c) spraying main function layer powder to the transition layer to form the main functional layer, and baking the battery pack shell with transition and main function layer at 160-180°C for 5-10 minutes; (d) spraying the protective layer powder to the main functional layer to form a protective layer; and (e) baking the battery pack shell with a transition layer, the main function layer and the protective layer at 180-190°C for 30-50 minutes.