1, pretreatment
In the pretreatment, it is necessary to remove impurities, dry and mix raw materials to ensure the purity and consistency of raw materials. This step plays an important role in the subsequent preparation of cathode materials and battery assembly.
2. Preparation of cathode materials
Cathode material is the core part of lithium battery, and its performance directly affects the performance and life of the battery. The preparation of cathode materials includes mixing, sintering and crushing raw materials to obtain cathode materials with specific morphology and structure.
3. Battery assembly
Battery assembly is the process of assembling positive electrode, negative electrode, separator and other materials into a battery. In this process, it is necessary to ensure that the size and morphology of each raw material are consistent to ensure the stability of battery performance.
4, coating process
Coating process refers to coating raw materials on metal foil or polyester film to form electrodes and diaphragms. The process controls the thickness and uniformity of the electrode and separator by controlling the coating amount and coating rate, thus affecting the performance of the battery.
5, electrode preparation process
The electrode preparation process refers to drying and sintering the coated electrode to obtain an electrode with a specific morphology and structure. By controlling the sintering temperature and time, the process ensures the crystal structure and electrochemical performance of electrode materials.
6, liquid injection process
Liquid injection process refers to the process of injecting electrolyte into battery cells. The process needs to control the injection rate, pressure and angle to ensure the uniform distribution of electrolyte and avoid the damage of electrolyte to other parts of the battery.