Parametric Effects of Resistance Spot Welding between Li-ion Cylindrical Battery Cell and Nickel Conductor Strip

9th Thai Society of Mechanical Engineers, International Conference on Mechanical Engineering

Phichai, N.^1 ; Kaewtatip, P.^1 ; Lailuck, V.^2 ; Rompho, S.^2 ; Masomtob, M.^2

Department of Mechanical Engineering, Faculty of Engineering, King Mongkut's University of Technology, Thonburi Bangkok, Thailand^1

Materials for Energy Research Unit, National Metal and Materials Technology Center (MTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, Thailand^2

关键词: Conductor strips;    Contact pressures;    Experimental methods;    Parametric effects;    Resistance spot welding;    Structural deformation;    Three parameters;    Welding position;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/501/1/012027/pdf
DOI  :  10.1088/1757-899X/501/1/012027

来源: IOP

【 摘 要 】

The resistance spot welding method is commonly used in the cylindrical battery packing because of production costs. However, its quality is lower than other welding methods. To improve the quality, three parameters which are slot geometries of nickel conductor strip, welding position and welding position sequence are studied in this paper using both simulations and experimental methods. According to different slot geometries, if the slot length is longer than the positive battery terminal diameter, the high welding current flows through the welding point. To weld different positions, it results in structural deformation of the positive battery terminal which directly affects the contact pressure. As different welding position sequences for three welding spots on the positive battery terminal, it is found that the sequence starting at the middle is better than which from the sides. In conclusion, these parameters can be used to improve the welding quality; nevertheless, there are still other parameters which will be studied in the future.