What are the processing techniques for automotive power lithium-ion batteries?

The first process: positive and negative electrode homogenization workshop. The purpose of this workshop is to mix the materials used in the strictly calculated positive and negative electrodes in a homogenization tank. During this process, dust must be strictly controlled to prevent dust. It has an impact on battery consistency, and its dust control level is equivalent to the medical level. The second process: coating workshop The coating workshop will uniformly attach the stirred slurry to the aluminum foil, and then carry out suspension drying in an oven heated with special oil, the purpose of which is to prevent the slurry from flowing and ensure uniform adhesion . This is also an important link to ensure the consistency of the finished battery performance. The third process: Rolling workshop In the rolling workshop, the aluminum foil with positive and negative materials attached is rolled by a roller with a pressure of about 50 tons. On the one hand, the coated material is tighter, the energy density is improved, and the energy density is ensured. The consistency of thickness, on the other hand, will further control dust and humidity. Unfortunately, due to the current thermal stability of domestic materials and foreign materials still have a certain gap, in order to ensure safety and achieve better performance, BAK currently uses imported raw materials. Fourth process: positive and negative electrode slitting The rolled aluminum foil is slit according to the size of the battery to be processed, and the appearance of burrs (visible under the microscope) is fully controlled. The purpose of this is to prevent burrs from piercing through the diaphragm and appearing. Serious security risks. The current slitting speed of the slitting workshop is 60 meters per minute. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete.