Journal
JOURNAL OF MANUFACTURING PROCESSES
Volume 16, Issue 2, Pages 183-189Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jmapro.2013.12.002
Keywords
Laser braze-welding; Aluminum-copper; Contact resistance; Weld seam layout
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Funding
- University of Luxembourg
- EU ERDF funds
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The reported investigation is related to laser beam braze-welding technology for dissimilar aluminum-copper interconnects for Li-ion battery assembly. The correlation between the brittle and high-resistivity intermetallic compounds and the electrical contact resistance showed that a thin intermetallic layer is highly desirable. It was proved that highest shear strength and lowest contact resistance can be achieved within the same parameter set which is of particular interest to battery electrical vehicle applications requiring both high mechanical reliability and electrical performance. A study on the weld seam layout further showed that two parallel weld seams with optimized spacing and overlap design provide lowest contact resistance. (C) 2013 The Society of Manufacturing Engineers. Published by Elsevier Ltd. All rights reserved.
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