What are the critical processes in the processing of soft pack lithium batteries

With the development of science and technology, the barriers to lithium battery processing technology have been broken through, and soft-packed lithium batteries have gradually stepped onto the stage, followed by a large-scale trial phase. The critical processes of soft-pack lithium battery processing are pole piece, assembly and formation. Soft pack lithium battery.jpg ●Pole piece process The main purpose of the pole piece process is to manufacture the core components of the positive and negative electrodes, which are divided into four processes: homogenization, coating, rolling, and cutting. This process is all run in a fully automatic closed system to ensure environmental protection and safety in manufacturing. ●Assembly process The assembly process is to assemble the processed pole pieces into lithium battery cells. The process is divided into five steps: punching, lamination, welding, heat sealing, and injection. The first four steps are all physical assembly processes. , There will not be any hazardous waste, and the whole process of the last step of liquid injection must be completed in a closed space. ●Formation process The formation process must have four steps: aging, charging and discharging, vacuuming and detecting and sorting. Aging is to leave the battery for a period of time at room temperature or high temperature, so that the electrolyte is absorbed inside the lithium battery; charging and discharging is to charge the battery from an empty state to a fully charged state to activate the battery; vacuuming is to exhaust the battery To the vacuum state, the performance and shape of the soft-packed lithium battery are guaranteed; the detection is a specific inspection of the internal resistance, voltage, insulation and other aspects of the lithium battery by the test system. Disclaimer: Some pictures and contents of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: UPS shipping packaging requirements and precautions for lithium batteries