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http://dx.doi.org/10.5781/KWJS.2013.31.6.58

Laser Welding Characteristics of Aluminum and Copper Sheets for Lithium-ion Batteries  

Kang, Minjung (Advanced Welding and Joining R&D group, Korea Institute of Industrial Technology)
Park, Taesoon (Advanced Welding and Joining R&D group, Korea Institute of Industrial Technology)
Kim, Cheolhee (Advanced Welding and Joining R&D group, Korea Institute of Industrial Technology)
Kim, Jeonghan (Korea Ppuri Industry Center, Korea Institute of Industrial Technology)
Publication Information
Journal of Welding and Joining / v.31, no.6, 2013 , pp. 58-64 More about this Journal
Abstract
Several joining methods involving resistance welding, laser welding, ultrasonic welding and mechanical joining are currently applied in manufacturing lithium-ion batteries. Cu and Al alloys are used for tab and bus bar materials, and laser welding characteristics for these alloys were investigated with similar and dissimilar material combinations in this study. The base materials used were Al 1050 and oxygen-free Cu 1020P alloys, and a disk laser was used with a continuous wave mode. In bead-on-plate welding of both alloys, the joint strength was higher than the strength of O tempered base material. In overlap welding, the effect of welding parameters on the tensile shear strength and bead shape was evaluated. Tensile shear strength of overlap welded joint was affected by interfacial bead width and weld defect formation. The tensile-shear specimen was fractured at the heat affected zone by selecting proper laser welding parameters.
Keywords
Laser welding; Aluminum; Copper; Dissimilar metal joining; Lithium-ion battery;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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