Application of laser welding technology in the field of new energy lithium battery

Today's new energy vehicles can accelerate to 100 kilometers in just a few seconds, allowing more people to experience the thrill of "super running". The power to drive new energy vehicles is derived from hundreds of lithium battery Cell units. In the manufacturing process of lithium batteries or battery packs, there are more than 20 processes that need to be welded to achieve conductive connection or sealing. The quality of welding plays a vital role in the safety performance of the vehicle.

Laser welding is an important non-contact welding method, which realizes the interatomic bonding of two separated products by focusing a high-energy laser beam on the surface or inside of the product to be processed. Compared with traditional argon arc welding and resistance welding, ultrasonic welding laser welding has significant advantages: first, the heat-affected zone is small; second, non-contact processing; third, high processing efficiency.

In the field of new energy lithium batteries, laser welding technology has been used on a large scale for welding tabs, cell shells, sealing nails, flexible connections, explosion-proof valves, battery modules, etc.

As a high-end intelligent equipment manufacturing company, Huiyao Laser is well aware of the application prospects of laser welding in intelligent equipment. As early as a few years ago, it began to look forward to the basic research and development of laser welding technology and its application in lithium battery and other equipment. Sexual layout. At present, Huiyao laser welding technology has solved the problem of uneven light emission at the corners of the top cover surrounding the welding process, which caused the welding seam to bulge, and realized the stable top cover surrounding welding with the welding speed above 200mm/s, reaching the advanced level of the industry.

With the continuous advancement of technology and process methods, the characteristics of laser as a non-contact flexible manufacturing tool will be more obvious. Laser manufacturing will inevitably become an advanced manufacturing technology that is convenient, efficient, environmentally friendly, energy-saving and consumption-reducing. It will promote technological progress and product technological transformation in my country's industrial field, and meet the development needs of the national economy, especially the manufacturing industry. In addition to rich R&D and application experience in the field of new energy lithium batteries, Huiyao Laser also has a large number of application cases in the field of precision electronics and auto parts. Huiyao Laser will conduct more extensive and in-depth laser processing technology research and automation integration, making China Automation stronger and more refined.