The main process flow of the company's lithium battery pack production. People are no longer unfamiliar with lithium battery packs. The production process of lithium batteries is not very consistent among each manufacturer. Objectively speaking, the production process of lithium battery packs is divided into three major sections, one is the production of pole pieces, and the other is the battery Core production, and the third is battery assembly. The editor below will explain in detail the production process of lithium battery packs.

　　The main process flow of the company's lithium battery pack production

　　As we all know, the production process of lithium battery packs is quite complicated. After all, the safety performance of lithium-ion battery products is directly related to the life and health of consumers. Naturally, the performance, accuracy, stability and automation level of equipment are highly concerned in the production and manufacturing of lithium batteries. Require. The reason is that the preparation of positive and negative electrode slurries for lithium battery packs includes a series of processes such as mutual mixing, dissolution, and dispersion of liquids and liquids, liquids and solid materials, and is accompanied by changes in temperature, viscosity, environment, etc.

　　In the lithium battery pack production process, pole piece production is the foundation, battery cell production is the core, and battery assembly is related to the quality of the lithium battery finished product. The specific steps of the lithium battery pack production process include positive electrode slurrying, negative electrode slurrying, positive electrode sheets, negative electrode sheets, steel case assembly, liquid injection and testing, and packaging.

　　It can be seen that each production link of the lithium battery pack production process is closely related to product quality and safety. Every link in the lithium battery production process must be strictly and carefully managed, so as to improve the lithium battery pack products. Safety performance.

　　Step 1 - Electrode Slurry Preparation

　　Mainly, the electrode active materials, binders, solvents, etc. are mixed together and thoroughly stirred and dispersed to form a slurry.

　　Step 2 - Coating

　　Evenly apply the slurry prepared in the first step to the current collector (aluminum foil or copper foil, etc.) with a specified thickness, and dry the solvent.

　　Step 3 - Pole piece punching

　　Cut the pole piece made in the previous step into the specified size and shape.

　　Step 4 - Lamination

　　Assemble the positive and negative electrode sheets and separator together, and after completing the glue application, the electrode core is formed.

　　Step 5 - Assemble the Soft Pack Battery

　　Put the pole core produced in the previous step into the aluminum-plastic film that has been punched, and complete the top seal, side seal, etc. (leaving a hole for liquid injection) to form a soft-pack battery without liquid injection.

　　Step 6 - Injection

　　Inject the specified amount of electrolyte into the soft-packed battery cell. Of course, the battery core must be baked and filled with liquid in a low-humidity environment. Excessive moisture content is not good.

　　Step Seven - Battery Sealing

　　The gas inside the cell is extracted and sealed in a vacuum environment.

　　With the rapid development of electric vehicles and automobiles, the power sources on the vehicles have also developed rapidly. However, there are many problems in the production of lithium battery packs, resulting in uneven quality of battery products in the market. The quality of lithium battery packs The cycle life at the later stage of capacity cannot reach the designed service life, which has a lot to do with the unique production process of lithium battery packs in production. The structure of the battery consists of outer casing, upper cover, polar plates, separators, busbars, poles, bridge protection plates, terminals and other components.

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