Analyze the over-welding process and requirements of lithium battery casing

Lithium battery shell super welding technology and requirements 1) The package connection of the shell generally adopts ultrasonic plastic welding. 2) Working principle: The high-frequency vibration caused by ultrasonic causes friction between the upper and lower shells, and the local temperature rises rapidly, resulting in high temperatures. The plastic flow of the material will appear between the two pieces of glue, which will solidify under pressure to form a uniform weld. 3) Choose a suitable ultrasonic welding machine, 4) Suitable welding parameters: power factor: force × speed, force has pressure (air pressure), and descending speed. The rate has frequency and amplitude, energy u003d power × time frequency: 20KHZ welding time, holding time. 5) The design of the shell and the guard plate should pay special attention to the size of the fit to prevent over-in-position or over-in-tightness. 6) Fully consider the impact of ultrasound, the thickness of the protective plate and the layout of the components to prevent loosening of the components. 7) The effect of welding: plastic materials, welding design, molds, etc. 8) Super welding quality: no super damage, no glue, no super height, uniform welding seam, tight welding, the sample falls on the board at a height of 1 meter, and the X, Y, and Z surfaces are dropped once (a total of six times) to meet the requirements . Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous article: What are the advantages of using lithium iron batteries in base stations?