US 12,103,106 B2
Method and system for laser welding a multiplicity of foils
Nicolai Speker, Pleidelsheim (DE); Marcel Schaefer, Burladingen (DE); Oliver Bocksrocker, Sachsenheim (DE); and Guenter Ambrosy, Stuttgart (DE)
Assigned to TRUMPF LASER-UND SYSTEMTECHNIK GMBH, Ditzingen (DE)
Filed by TRUMPF Laser—und Systemtechnik GmbH, Ditzingen (DE)
Filed on Dec. 17, 2021, as Appl. No. 17/553,867.
Claims priority of application No. 102020216393.6 (DE), filed on Dec. 21, 2020.
Prior Publication US 2022/0193823 A1, Jun. 23, 2022
Int. Cl. B23K 26/22 (2006.01); B23K 26/00 (2014.01); B23K 26/24 (2014.01); B23K 26/60 (2014.01); B23K 101/36 (2006.01)
CPC B23K 26/24 (2013.01) [B23K 26/60 (2015.10); B23K 2101/36 (2018.08)] 15 Claims
OG exemplary drawing
 
1. A method for laser welding a multiplicity of foils onto a carrier, the method comprising:
A) arranging the foils one on top of the other to provide a foil stack,
B) folding, via a bending tool, the foil stack to provide a folded region of the foil stack that protrudes up from two side regions of the foil stack,
C) pressing, via a pressing tool, the foil stack together in the folded region and pressing, via a holding-down arrangement, the side regions against the carrier and toward the folded region, and
D) welding the foils to one another and to the carrier by directing a laser beam onto the top side of the folded region, such that laser energy is transmitted from the top side of the folded region toward the carrier, and moving the laser beam along the folded region.