Brief introduction of lithium battery processing process

The processing flow of lithium batteries is not very consistent for each manufacturer, but most of them cannot be separated from these links. The detailed description is as follows: Material preparation, homogenization, coating, rolling, cutting, baking, winding into the shell, laser welding, baking, injection The pre-filled, sealed, cleaned and aged are fully checked and shipped. Objectively speaking, the lithium battery processing process is divided into three sections, one is pole piece production, the other is battery cell production, and the third is battery packaging. In the lithium battery processing technology, the production of pole pieces is the foundation and the production of battery cells is the core, and battery packaging is related to the quality of the finished lithium battery. The detailed steps of the lithium battery processing process include positive electrode drawing, negative drawing slurry, positive electrode sheet, negative electrode sheet, steel shell assembly, liquid injection and testing, and packaging. As we all know, the lithium battery processing process is quite complicated. After all, the safety performance of lithium battery products is directly related to the life and health of consumers. Natural lithium battery processing and manufacturing have high requirements for equipment performance, accuracy, stability and automation. Take the preparation of electrode slurry in the lithium battery processing process as an example. This link is the foremost link in time and is also the most important link of the entire processing process. After all, the electrode slurry mixing and dispersion process has an impact on product quality greater than 30 %. What's the reason? The reason is that the preparation of positive and negative slurries of lithium batteries includes a series of processes such as the mutual mixing, dissolution, and dispersion of liquid and liquid, and liquid and solid materials, and is accompanied by changes in temperature, viscosity, and environment. In the positive and negative slurry, the dispersibility and averageness of the granular active material directly affects the movement of lithium ions between the two electrodes of the battery, so the dispersion quality of the electrode slurry directly affects the product performance of the lithium battery. It can be seen that each processing link in the lithium battery processing process is closely related to product quality and safety. Every link in the lithium battery processing process must be strictly and carefully managed, so as to improve the safety performance of lithium battery products. . Disclaimer: Some pictures and content of the articles published on this site are from the Internet. If there is any infringement, please contact to delete.