Laser + automation empowering power lithium battery manufacturing

A new round of power lithium battery production expansion is being launched globally, which will bring huge growth 'dividends' to the leading companies in my country's lithium battery industry chain. As a leading domestic supplier of comprehensive solutions for laser automation equipment, Hymson Laser officially landed on the Sci-tech Innovation Board in September this year. With continuous accumulation in the field of laser and automation equipment, Hymson Laser has completed the creation of talents and teams, patent and technology accumulation, product market share, head customer reserves, rapid delivery and service response, and regional layout. The construction of competitiveness. At the same time, as a Chinese power in the lithium battery industry, Hymus has begun to move towards the global stage. From December 16th to 18th, [Li Yuanheng General Title] 2020 High-tech Lithium Electric Vehicle Annual Conference was grandly opened at the Hyatt Hotel in Shenzhen Airport. Nearly 1,000 senior executives from the power lithium battery industry chain gathered to talk about the future. New industrial blueprint for ten years. On the morning of the 18th, the new application and new battery special session of [Hymes Laser Title], Li Xin, deputy general manager of Hymson Laser, gave a keynote speech entitled 'Laser + Automation Empowering Power Lithium Battery Manufacturing' . Hymson Laser has core technologies for laser and automation. Core automation technologies include mechanical design, intelligent control, vision systems, and precision devices; core laser technologies include laser cutting, laser welding, surface treatment, and laser marking. The four intelligent manufacturing methods of Hymson lithium batteries include laser production, square aluminum shell assembly line, battery cell drying assembly line, and module pack assembly line. Li Xin introduced that the application of lasers in the field of lithium batteries mainly includes welding, cutting, and clarity. In the field of welding, the innovative application technologies of Hymson laser include green light welding, stainless steel shell welding, ring spot welding, tab welding, and cleaning. . In the field of green lasers, green wavelengths can be well absorbed by copper materials: at room temperature, the absorption rate of copper for infrared lasers is only 5%, while the absorption rate for green lasers can reach 40%, which is higher than infrared. 8 times. The high absorption rate represents the high utilization rate of the laser. The penetration depth of 6000w infrared welding copper is only 2000w or lower when using the green laser; and the high absorption rate guarantees the high stability of the welding process: green laser welding copper There is almost no spatter, and the welding stability is excellent. Therefore, Green Light has obvious advantages when welding copper. In the application of steel shell welding, reducing the thickness of the shell is one of the effective ways to increase the energy density of the battery. The steel shell can be used to achieve a wall thickness of about 0.1mm, which is only 25% of the thickness of the aluminum shell. Therefore, the development of steel shell welding technology has broad application prospects. Hymson has developed the steel shell sealing welding and sealing nail welding technology. The welding seam tension of the 0.1mm thick steel shell can reach 30N/mm. The welding effect is stable and the welding quality is reliable. It can be used in the manufacture of new steel shell batteries at any time. . In the application of ring spot lasers, the ring spot laser is a new type of fiber laser that has emerged in recent years. Its spot shape includes an inner ring with a larger energy density and an outer ring with a smaller energy density. The beam pattern combined with the inner and outer rings can expand the keyhole in laser deep penetration welding, suppress welding spatter and the appearance of pores, and improve the appearance of the weld and the stability of the weld. In the application of laser welding of the lugs, in the conventional manufacturing process, after the multi-layer lugs are pre-welded by ultrasonic, they are then welded to the adapter sheet and the top cover by ultrasonic final welding. Ultrasonic welding is contact welding, which limits the simplification of the structure of the adapter sheet and complicates the cell manufacturing process. Therefore, equipment manufacturers are looking for new welding processes to replace ultrasonic final welding. Hymus took the lead in achieving a breakthrough in the difficulty of laser welding of the pole ears. Compared with the ultrasonic wave, the laser welding effect is higher and the contact surface is tighter. It has been formally put into the production of lithium batteries. In laser cleaning technology, it includes battery surface cleaning and pole piece cleaning. In terms of surface cleaning of power lithium batteries, the oxidation layer cleaning on the surface of power lithium batteries and the blue paint cleaning process are new requirements of some power lithium battery manufacturers. With its mature flying marking technology, Hymen has realized the linkage between the galvanometer and the motion axis, and the size of the galvanometer is no longer an obstacle to cleaning efficiency. In terms of pole piece cleaning, the significance of the laser cleaning machine is to clean the coating layer on the pole piece surface under the use of a high-energy laser beam to ensure that the foil surface is free from damage and coating layer residues. In the application of new laser cutting technology, Hymson Laser has launched laser slitting, one-out multi-laser cutting, seam cutting DXF technology, positive electrode cutting, cutting integrated machine and other technologies and products. With the acceleration of global electrification, domestic lithium battery equipment companies must also start to actively expand internationally. Li Xin believes that when equipment companies expand internationally, they must first do a good Knowing that, the third is that domestic companies must unite and jointly maintain my country's brand.