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Lithium batteries are composed of four important parts: positive electrode, negative electrode, non-aqueous electrolyte, and separator. At present, the most commonly used lithium batteries in the market are lithium iron phosphate batteries and ternary lithium batteries. There are significant differences in the raw materials of the positive electrode between the two, and the production process is relatively similar, but the process parameters need to change greatly. If lithium iron phosphate is fully replaced with ternary materials, the rectification effect of the old production line will not be satisfactory. For battery manufacturers, they need to replace the equipment on a large scale on the production line.

Lithium battery manufacturing process: the first, middle, and last three processes, accounting for nearly 35%/30%/35%

The production process of lithium batteries is relatively complex, with important production processes covering the stirring and coating stage (front stage) of electrode production, the winding and liquid injection stage (middle stage) of cell synthesis, and the packaging and testing stage (rear stage) of formation and packaging. The value (purchase amount) accounts for approximately (35-40%): (30-35)%: (30-35)%. The difference is mainly due to differences in equipment suppliers, import/domestic proportion, etc. The process flow is basically the same, and there is a deviation in the proportion of value to quantity, but overall it conforms to this proportion.

The lithium battery equipment corresponding to the early stages of lithium battery production mainly includes vacuum mixer, coating machine, roller press, etc; The important middle stage processes include die-cutting machines, winding machines, laminating machines, liquid injection machines, etc; The latter stage of the process includes formation machines, volumetric testing equipment, process warehousing and logistics automation, etc. In addition, the production of battery packs also requires the use of automated equipment.

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