What are the production processes of lithium batteries?

　　1. Slurry mixing is an important part of lithium ion battery equipment. The positive paste of lithium ion battery is composed of adhesive, conductive agent and positive material, and the negative paste is composed of adhesive and graphite ink; The preparation of positive and negative pastes includes the mixing, dissolution and dispersion of liquid and liquid, liquid and solid materials; The quality of slurry dispersion directly affects the quality and performance of lithium ion batteries.

　　2. The coating determines the consistency and superiority of the battery and occupies a technical position in battery manufacturing. No matter which type of battery is produced (such as cylindrical or square), the coating machine used in manufacturing is the same; Different types of batteries need to be equipped with different types of winding machines.

　　3. In addition to lithium ion battery winding machine, there are capacitor winding machine, fabric winding machine, etc. According to the operation mode of the machine, it can be divided into manual winding machine, semi-automatic winding machine and full-automatic winding machine.

　　4. The importance of testing items is increasingly prominent. Lithium ion battery is easy to burn or explode due to short circuit, overcharge and other reasons. In application, it will form a finished battery and a protection board; In the application field of high energy density, lithium-ion batteries need to be combined in series and parallel to form a lithium-ion battery pack, which is managed by the battery management system (BMS). It can be seen that the production process of lithium ion battery is long, including more than 50 processes and more than 50 equipment. The whole manufacturing process can be divided into four parts: pole piece manufacturing, battery assembly, battery activation detection and battery packaging. The equipment related to the fabrication of pole piece is called front-end equipment, the equipment related to the fabrication of battery is called mid end equipment, and the equipment related to battery activation detection and battery packaging is called back-end equipment. In recent years, the lithium ion battery production is developing towards integration, full series and automation. The lithium battery automatic production line provides customers with standardized products. Traditional development methods can no longer meet the rapidly changing needs of customers.

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