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Laser wobble welding of steel to Aluminium busbar joints for Li-ion battery packs
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Chelladurai Asirvatham, M., Collins, Sam and Masters, Iain (2022) Laser wobble welding of steel to Aluminium busbar joints for Li-ion battery packs. Optics & Laser Technology, 151 . 108000. doi:10.1016/j.optlastec.2022.108000 ISSN 0030-3992.
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WRAP-laser-wobble-welding-steel-Aluminium-busbar-joints-Li-ion-battery-packs-2022.pdf - Published Version - Requires a PDF viewer. Available under License Creative Commons Attribution Non-commercial No Derivatives 4.0. Download (18Mb) | Preview |
Official URL: https://doi.org/10.1016/j.optlastec.2022.108000
Abstract
In this work, Laser wobble welding of Steel to Aluminium busbar joints was investigated for Li-ion battery pack applications. The effect of wobble amplitude on the properties of the weld was studied. It is observed that wobble amplitude significantly influenced the weld geometry, microstructure, mechanical strength, and electrical resistance. As wobble amplitude increases the weld depth reduces linearly and the severity of weld cracking was significantly reduced. Welds with an aspect ratio below 1, produce almost a crack-free microstructure. The optimum wobble amplitude was found to be 0.8–1 mm for the selected laser power density. Under optimum parametric conditions, the weld strength reaches 1 KN, equalling that of the thin steel sheet. In addition, the optimum welds showed a low volume of intermetallic phase formation which improved both electrical conductivity and tensile strength. The results of this study facilitate an effective joining solution for a cost-effective aluminium busbar material to steel-cased cylindrical cells.
| Item Type: | Journal Article | ||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TS Manufactures |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) |
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| Library of Congress Subject Headings (LCSH): | Laser welding, Lithium ion batteries -- Design and construction, Bus conductors (Electricity), Interconnects (Integrated circuit technology), Steel -- Welding, Aluminum -- Welding | ||||||||
| Journal or Publication Title: | Optics & Laser Technology | ||||||||
| Publisher: | Elsevier | ||||||||
| ISSN: | 0030-3992 | ||||||||
| Official Date: | July 2022 | ||||||||
| Dates: |
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| Volume: | 151 | ||||||||
| Article Number: | 108000 | ||||||||
| DOI: | 10.1016/j.optlastec.2022.108000 | ||||||||
| Status: | Peer Reviewed | ||||||||
| Publication Status: | Published | ||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||
| Date of first compliant deposit: | 25 May 2022 | ||||||||
| Date of first compliant Open Access: | 25 May 2022 | ||||||||
| Funder: | This research work was partly supported by WMG centre High Value Manufacturing Catapult, University of Warwick, The UK (grant no.160080 core (WMG)) | ||||||||
| RIOXX Funder/Project Grant: |
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