公开(公告)号：US20230246315A1

公开(公告)日：2023-08-03

申请号：US17587126

申请日：2022-01-28

Applicant: GM Global Technology Operations LLC

Inventor： Wayne Cai ,  Teresa Jean Rinker ,  Jennifer Therese Bracey ,  Shunyi Zhang

IPC: H01M50/566 ,  B23K11/00

CPC classification number: H01M50/566 ,  B23K11/0026 ,  B23K2101/36

Abstract: Disclosed herein is a device for magnetic welding of battery boils comprising a coil holder; where the coil holder comprises one or more electrical coils that are operative to be activated by an electrical current; a foil holding fixture; wherein the foil holding fixture comprises a plurality of arms; wherein each pair of adjacent arms is operative to move towards one another to crimp a plurality of battery foils; and an anvil; wherein the anvil is operative to support a battery tab and the battery foils.

公开(公告)号：US20230241705A1

公开(公告)日：2023-08-03

申请号：US17587132

申请日：2022-01-28

Applicant: GM Global Technology Operations LLC

Inventor： Wayne Cai ,  Teresa Jean Rinker ,  Jennifer Therese Bracey ,  Shunyi Zhang

IPC: B23K11/04 ,  H01M50/566 ,  H01M10/0525

CPC classification number: B23K11/04 ,  H01M50/566 ,  H01M10/0525

Abstract: A method comprises deforming one or more metal foils of a battery between a punch and a die to form bent metal foils. The one or more bent metal foils are disposed in a foil holding fixture with a battery lead disposed next to the one or more bent metal foils such that a bent portion of the one or more bent metal foils are separated from the battery lead by a distance of 0.1 to 2 millimeters. The one or more bent metal foils are impact welded by causing the foils to impact one another or to impact a battery lead at a velocity of speeds of 300 to 900 meters per second.