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Joining Technologies for Automotive Lithium-Ion Battery Manufacturing: A Review

[+] Author Affiliations
S. Shawn Lee, Tae H. Kim, S. Jack Hu

The University of Michigan, Ann Arbor, MI

Wayne W. Cai, Jeffrey A. Abell

General Motors R&D Center, Warren, MI

Paper No. MSEC2010-34168, pp. 541-549; 9 pages
doi:10.1115/MSEC2010-34168
From:
  • ASME 2010 International Manufacturing Science and Engineering Conference
  • ASME 2010 International Manufacturing Science and Engineering Conference, Volume 1
  • Erie, Pennsylvania, USA, October 12–15, 2010
  • Conference Sponsors: Manufacturing Engineering Division
  • ISBN: 978-0-7918-4946-0 | eISBN: 978-0-7918-3887-7
  • Copyright © 2010 by ASME and General Motors

abstract

Automotive battery packs for electric vehicles (EV), hybrid electric vehicles (HEV), and plug-in hybrid electric vehicles (PHEV) typically consist of a large number of battery cells. These cells must be assembled together with robust mechanical and electrical joints. Joining of battery cells presents several challenges such as welding of highly conductive and dissimilar materials, multiple sheets joining, and varying material thickness combinations. In addition, different cell types and pack configurations have implications for battery joining methods. This paper provides a comprehensive review of joining technologies and processes for automotive lithium-ion battery manufacturing. It details the advantages and disadvantages of the joining technologies as related to battery manufacturing, including resistance welding, laser welding, ultrasonic welding and mechanical joining, and discusses corresponding manufacturing issues. Joining processes for electrode-to-tab, tab-to-tab (tab-to-bus bar), and module-to-module assembly are discussed with respect to cell types and pack configuration.

Copyright © 2010 by ASME and General Motors

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