aluminium show | China to Build Anode Aluminum Foil Production Plant for Electric Vehicle Power Battery

Electric vehicles are one of the fastest-developing industrial products in human society today, and the anode aluminum foil required for manufacturing their power batteries is the highest quality type of aluminum foil. It features thin thickness, high strength, the highest surface dyne value in aluminum foils, the smallest thickness deviation, optimal flatness, and the cleanest surface, making its production the most challenging. China is the world's largest producer of electric vehicles and their power batteries and it has the potential to become the largest producer of aluminum foil for electric vehicle batteries. To produce this high-precision aluminum foil, specialized foil rolling mills and control equipment must be used. Among these, the Optimill from Achenbach, Germany, is considered the best.

There are seven key points in producing battery foil and the corresponding control system of Achenbach's Optimill for rolling aluminum foil for electric vehicle batteries. These are: the work rolls must be carefully preheated, minimal residual oil on the foil surface, precise coiling, fine cutting, high-quality edge trimming, a highly clean production environment, and meticulous inspection. Before rolling the foil for electric vehicle power batteries, the work rolls of the rolling mill should be carefully preheated to create a certain temperature gradient for stable processing and to produce flat foil material. The less residual oil on the foil surface, the better. Achenbach's optimized blow-dry system can blow away residual oil on the foil strip, leaving only a thin layer of oil film. When producing thin aluminum strips and foils, slitting is also a key process. Achenbach has developed a new high-end foil cutting system. This system has a very sturdy holder for the blade, preventing any significant loosening or fine trembling, ensuring that the slitted battery foil meets technical standards. The system also includes a vacuum cleaner to remove residual particles from the cutting blades.

To achieve the "dual carbon" goals, countries around the world are accelerating the development of electric vehicles. According to data from the aluminium show, it is projected that by 2030, the annual compound growth rate of electric vehicles could reach 20%–25%. The popularity of electric vehicles also brings new growth points for aluminum consumption. Currently, the amount of aluminum used in electric vehicles has reached approximately 400 kg per vehicle, half of which is used in manufacturing batteries and trays.