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Laser doppler vibrometry for evaluating the quality of welds in lithium-ion supercells
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Ratner, Alon, Wood, Michael, Chowanietz, Maximilian, Kumar, Nikhil, Patel, Rashik, Hadlum, Paul, Das, Abhishek and Masters, Iain (2022) Laser doppler vibrometry for evaluating the quality of welds in lithium-ion supercells. Energies, 15 (12). p. 4379. doi:10.3390/en15124379 ISSN 1996-1073.
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Official URL: https://doi.org/10.3390/en15124379
Abstract
The inspection of the quality of welds in battery packs plays an important role in ensuring safety during the manufacturing and operation of energy-storage devices in automotive vehicles during service. This research investigated the novel application of laser Doppler vibrometry, a widely used non-destructive optical technique for modal analysis, to the post-weld evaluation of micro-TIG-welded interconnections in lithium-ion supercells. The experimental modal analysis showed features in the modal models of the supercells that were unique to their welding conditions. The comparisons between the supercells showed an absence of linear correlations between the modal parameters and the welding current, as well as differences in the welding parameters obtained from the negative and positive terminals of the cylindrical cells. These findings suggested that the modal parameters of the supercells were more strongly influenced by the rigidity of the structural materials than by the localized compliance of the welded interconnections. While this investigation demonstrated a method for using laser Doppler vibrometry to distinguish between different welding conditions in lithium-ion supercells at a structural level, further development is needed to identify the weld quality of individual interconnections.
Item Type: | Journal Article | ||||||
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Subjects: | T Technology > TA Engineering (General). Civil engineering (General) T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TS Manufactures |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||
SWORD Depositor: | Library Publications Router | ||||||
Library of Congress Subject Headings (LCSH): | Lithium ion batteries, Welding, Modal analysis, Vibration -- Measurement | ||||||
Journal or Publication Title: | Energies | ||||||
Publisher: | MDPI | ||||||
ISSN: | 1996-1073 | ||||||
Official Date: | 16 June 2022 | ||||||
Dates: |
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Volume: | 15 | ||||||
Number: | 12 | ||||||
Page Range: | p. 4379 | ||||||
DOI: | 10.3390/en15124379 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||
Date of first compliant deposit: | 26 July 2022 | ||||||
Date of first compliant Open Access: | 27 July 2022 | ||||||
RIOXX Funder/Project Grant: |
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