The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2014
Filed:
Mar. 23, 2011
Wayne W. Cai, Troy, MI (US);
Thomas B. Stoughton, Birmingham, MI (US);
Xiang Zhao, Novi, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A method for beam welding a multi-sheet work stack includes positioning a first sheet adjacent to a second sheet, and positioning a third sheet adjacent to the second sheet such that a single common welding interface is defined. An energy beam is directed onto the interface until a fusion weld forms along the interface. The third sheet may define a flange or a tab portion. The flange portion may be placed in direct contact with the first sheet along the interface, while the tab portion may be inserted into a slot of the second sheet to contact the first sheet at the interface. The beam may be a laser or ion beam. The lower melting temperature sheet may be positioned farther from the source of the energy beam than the other sheets. The welded assembly may be a battery module, with the sheets being an interconnect member and battery tabs.