Which processes are used to manufacture iron-lithium batteries?

The pulping and stirring process of the active material in the manufacturing process of iron-lithium battery is to stir the active material into a slurry through a vacuum mixer. This is the first process of iron-lithium battery processing. The quality of this process will directly affect the quality of lithium batteries and the qualified rate of finished products. Moreover, the process flow of this process is complicated, and it has high requirements on the ratio of raw materials, mixing steps, mixing time, etc. Here is the active material of the iron-lithium battery. In addition, dust must be strictly controlled during the mixing process to prevent dust from affecting battery consistency. In the Ningde era, the level of dust control in processing workshops is equivalent to that of pharmaceuticals. Coating the stirred slurry on the copper foil. The coating process is to apply the slurry that has been stirred after the previous process evenly on the 4000-meter-long copper foil at a speed of 80 meters per minute. The copper foil before coating is only 6 microns thick, which can be described as thin as silkworm wings. Coating is very important, to ensure that the thickness and weight of the pole piece are consistent, otherwise it will affect the consistency of the lithium battery. The coating must also ensure that no particles, debris, dust, etc. are mixed into the pole piece. Otherwise it will cause the battery to discharge too quickly, and even cause safety hazards. The negative electrode material on the copper foil is compressed and then divided into cold pressing and pre-cutting. In the rolling workshop, the pole pieces attached with the positive and negative electrode materials are rolled by rollers. On the one hand, the coated material is closer and improved. Energy density, to ensure the consistency of thickness, on the other hand, it will further control dust and humidity. The cold-pressed pole pieces are cut according to the size of the lithium battery to be processed, and the appearance of burrs is fully controlled. The purpose of this is to prevent the burrs from piercing through the diaphragm, causing serious safety hazards. Complete the prototype winding process of the cell. Here, the positive electrode sheet, the negative electrode sheet, and the separator of the lithium battery are wound into a bare cell. Advanced CCD visual inspection equipment can realize automatic detection and automatic correction to ensure that the cell pole piece is in good position. The process of cell activation: Formation is the process of activating the injected lithium cell. Through charging and discharging, a chemical reaction occurs inside the cell to form an SEI film, which ensures the safety, reliability and longevity of the subsequent cell during the charge and discharge cycle. Cycle life. The formation process also includes the second electrolyte infusion, weighing, welding of the injection port, and air tightness testing after the cell is activated; the self-discharge test high temperature aging and standing to ensure product performance statement: article published on this site Part of the pictures and content are from the Internet. If there is any infringement, please contact to delete.