Title:
METHOD FOR WELDING CELL INTERCONNECTORS, AND WELDING ELECTRODE ARRANGEMENT FOR SAID METHOD
Document Type and Number:
WIPO Patent Application WO/2020/136195
Kind Code:
A9
Abstract:
Welding electrode arrangement and method for welding in each case one interconnector of two adjacent electrochemical cells of a rechargeable battery, wherein the two electrochemical cells are arranged in a manner separated from one another by means of a housing separating wall, wherein the interconnectors are arranged on two opposite sides of the housing separating wall in a manner facing one another, wherein an opening is arranged in a region of the housing separating wall, in which region the interconnectors are situated opposite each other, and wherein the method comprises the following steps: contact-connecting the interconnectors with a welding electrode arrangement, wherein the welding electrode arrangement has at least one pair of welding electrodes, wherein in each case one welding electrode of the at least one pair of welding electrodes makes contact with one of the interconnectors by means of an insert part (100), and welding the interconnectors in such a way that, by means of a pressure which is applied by the insert parts (100) of the welding electrodes and a current which is applied to the welding electrode arrangement, the material of the interconnectors melts at least in regions and cohesively connects through the opening in the housing separating wall, specifically such that the welding area generated has a proportion by area of plastic inclusions of at most 8% in the welding area.
Inventors:
ETEMAD RAMIN (DE)
Application Number:
PCT/EP2019/087011
Publication Date:
November 26, 2020
Filing Date:
December 24, 2019
Export Citation:
Assignee:
CLARIOS GERMANY GMBH & CO KGAA (DE)
International Classes:
B23K11/00; B23K11/11; B23K11/30; H01M10/06; H01M50/541; H01M10/12
Attorney, Agent or Firm:
MEISSNER BOLTE PATENTANWÄLTE RECHTSANWÄLTE PARTNERSCHAFT MBB (DE)
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