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A study on the mechanical and electrical performance of Al/Cu laser multi-seam welded joints

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Abstract

Aluminum alloy and copper used in lithiumion batteries have low absorption and high reflectivity, so it is difficult to obtain stable joint strength when laser welding is applied. In order to overcome problems, this study has applied multi-seam weld to increase joint area of welded joints. AA1050-H18 and C11020P sheets with a thickness of 0.5 mm were welded by 2-kW fiber laser welding. The effect of the welding parameters of pitch (0, 1, 4, 8 mm) on weldability in welded joints has been investigated. As the pitch of multi-weld seam increased, the tensile-shear load tended to increase. The maximum tensileshear load in the multi seam weld of pitch 8 mm was 1.25 kN, which was about 108% compared to the single weld seam 0.6 kN. In addition, the minimum electrical resistance was 77 μΩ at the pitch of 8 mm, which decreased by approximately 49% compared to 115 μΩ of single seam welding.

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Authors and Affiliations

  1. Department of Welding and Joining Science Engineering, Graduate School, Chosun Univ., 309 Pilmun-Daero, Gwangju, 61452, Republic of Korea

    Hye-Seul Yoon & Young-Jin Eun

  2. Department of Welding and Joining Science Engineering, Chosun Univ., 309 Pilmun-Daero, Gwangju, 61452, Republic of Korea

    Hee-Seon Bang

Authors
  1. Hye-Seul Yoon
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  2. Young-Jin Eun
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  3. Hee-Seon Bang
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Contributions

All authors contributed to the study conception and design. The data analysis and manuscript were written by HSY. The mechanical characteristics and metallurgical characteristics were investigated by YJE. HSB supervised the entire work. All authors read and approved the final manuscript.

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Correspondence to Hee-Seon Bang.

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Yoon, HS., Eun, YJ. & Bang, HS. A study on the mechanical and electrical performance of Al/Cu laser multi-seam welded joints. Int J Adv Manuf Technol 132, 4689–4698 (2024). https://doi.org/10.1007/s00170-024-13614-8

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  • DOI: https://doi.org/10.1007/s00170-024-13614-8

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