Stirring, coating, winding and testing are the main production processes of lithium batteries
1. Slurry stirring is an important part of lithium ion battery equipment. The positive electrode slurry of lithium ion battery is composed of binder, conductive agent, positive electrode material, etc., and the negative electrode slurry is composed of binder, graphite carbon powder, etc .; positive and negative electrodes The preparation of the slurry includes the mixing, dissolving, and dispersing of liquid and liquid, liquid and solid materials. The quality of the dispersion of the slurry directly affects the quality and performance of the lithium ion battery.
2. Coating determines the consistency and superiority of the battery, and occupies a technological position in battery manufacturing. No matter what kind of battery (such as cylindrical or square) is produced, 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 the lithium-ion battery winding machine, there are capacitor winding machine, textile winding machine, etc. According to the operation mode of the machine, it can be divided into manual winding machine, semi-automatic winding machine and automatic winding machine.
4. The importance of testing items is becoming increasingly prominent. Lithium-ion batteries are easy to burn or explode due to short-circuit, overcharge, etc., and will form a finished battery with the protective plate in the application; in high energy density applications, lithium-ion batteries need to be combined in series and parallel to form a lithium-ion battery pack Battery management system (BMS) to manage.
It can be seen that the production process of lithium-ion batteries is long, including more than 50 processes, and correspondingly requires more than 50 kinds of equipment. The entire manufacturing process can be divided into four steps: pole piece production, cell assembly, cell activation detection and battery packaging. The equipment related to pole piece production is called front-end equipment, and the cell production is related to mid-end equipment. And battery packaging equipment as back-end equipment.
In recent years, lithium battery production has developed towards integration, integration and automation. Lithium battery automated production lines provide customers with standardized products. Traditional development methods cannot meet the rapidly changing needs of customers.
