公开(公告)号：US20230249294A1

公开(公告)日：2023-08-10

申请号：US17668708

申请日：2022-02-10

Applicant: GM Global Technology Operations LLC

Inventor： Teresa Jean Rinker ,  Liang Xi ,  Xun Liu ,  Ho Kwon ,  Umair H. Shah

IPC: B23K35/02 ,  H01M50/536

CPC classification number: B23K35/0261 ,  H01M50/536 ,  B23K2101/36

Abstract: A non-stick electrode comprises an electrode an electrically insulating sheath disposed thereon. The electrically insulating sheath has an opening on a surface of the electrode through which an electrical current is transmitted or received to or from an opposing electrode respectively. The electrode protrudes through the opening in the insulating sheath. An electrically conducting interlayer is disposed on the electrode such that it contacts the electrode at the opening in the electrically insulating sheath. The electrically conducting interlayer comprises a material that decomposes at a temperature that is greater than a temperature of a metal that is liquified on contact with the non-stick electrode.

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.

公开(公告)号：US20250007111A1

公开(公告)日：2025-01-02

申请号：US18342201

申请日：2023-06-27

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Feng Feng ,  Sam T. Liu ,  Teresa Jean Rinker ,  Wayne Cai ,  Mansu Park

IPC: H01M50/533 ,  B60L50/64 ,  H01M50/534

Abstract: Some embodiments disclosed herein are directed to battery cells with corrugated foil tabs. Some embodiments may include a battery cell comprising a cathode, an anode and a corrugated foil tab coupled to the cathode or the anode, wherein the corrugated foil tab has a length in a first plane, includes alternating peaks and troughs in a second plane along the length of the corrugated foil tab, and has a width in a third plane, and wherein the first plane, second plane, and third plane are orthogonal to each other. Other embodiments may be disclosed or claimed.