▎ 摘　　要

NOVELTY - The coating method involves using the explosive wire method to prepare nano-metal powder of the same material as the pole sheet to be coated, positive electrode aluminum nano-metal powder, and negative electrode copper nano-metal powder. The graphene powder and nano-metal powder are added in sequence to the slurry to be coated, and stirred evenly to obtain a modified mixed slurry. The modified mixed slurry is made into a coating film. The coating film and the pole sheet to be coated are integrated by vacuum diffusion welding to complete the coating. USE - Coating method for lithium battery. ADVANTAGE - The lithium battery coating method can effectively avoid the defects in the traditional coating process by making the slurry into a coating film and then completing the coating by vacuum diffusion welding. The addition of graphene powder makes the slurry have better film-forming properties by adding nano-metal powder of the same material as the pole piece to the original slurry to meet the conditions of vacuum diffusion welding. Various defects in the direct coating process can be effectively avoided by welding the film to the pole piece. The preparation of the coating film can be realized only by conventional methods, such as casting method. The coating is more flexible and industrialized. The produced coating film can be stored and transported separately, and the preservation is more convenient and durable. The process of vacuum diffusion welding is easier to grasp than the direct coating of the slurry. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a lithium battery coating device used in the lithium battery coating method. DESCRIPTION OF DRAWING(S) - The drawing shows the schematic diagram of the lithium battery coating device. 1First reel 2Second winding drum 3Film fixing splint 4Limiting device 4-1Rotating cylinder 5Vacuum diffusion welding box 6Temperature control box 7Collecting roller 7-1Slot 8First motor 9Second motor 10Operating platform 11Hydraulic lifting system