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Lithium battery front-end production process: relationship between electrode manufacturing and battery core performance

The result of the front-end process of lithium batteries is the preparation of the positive and negative electrode plates. The first step is stirring, which involves mixing the positive and negative solid-state battery materials evenly, adding solvents, and stirring them into a slurry using a vacuum mixer. The mixing of ingredients is the foundation of the subsequent lithium battery process, and high-quality mixing is the foundation of high-quality completion of subsequent coating and rolling processes.

After the coating and rolling process, there is slitting, which is the process of slitting the coating. If burrs appear during the cutting process, there may be safety hazards during subsequent assembly, electrolyte injection, and even battery use. Therefore, the front-end equipment in the lithium battery production process, such as mixers, coating machines, roller presses, and slitting machines, are the core machines in battery manufacturing, which are related to the quality of the entire production line. Therefore, the value (amount) of front-end equipment accounts for the highest proportion of the entire lithium battery automation production line, about 35%.

Lithium battery mid stage process flow: efficiency first, winding before lamination

In the manufacturing process of lithium batteries, the middle stage process is important for completing the formation of the battery. The important process processes include film making, electrode winding, die-cutting, cell winding and lamination forming, etc. It is currently a highly competitive field among domestic equipment manufacturers, accounting for about 30% of the value of lithium battery production lines.

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