公开(公告)号：US11355820B2

公开(公告)日：2022-06-07

申请号：US16550367

申请日：2019-08-26

Applicant: Greatbatch Ltd.

Inventor： Xiangyang Steve Dai ,  Kenneth L. Grubb ,  Kenneth B. Talamine ,  Brian D. Panzer

IPC: H01M50/531 ,  B23K11/11 ,  B23K11/20 ,  B23K11/30 ,  B23K11/31 ,  B23K11/28 ,  H01M50/186 ,  H01M50/191 ,  H01M50/543

Abstract: A new weld configuration is used to obtain a robust and consistent resistance weld between the tabs of an anode current collector and the casing of an electrochemical cell. This is done by adding a resistive transferable electrode tip between at least one of the welding electrodes, preferably the movable welding electrode, and the stacked parts that are being joined together. The purpose of the transferable electrode tip is to generate a sufficient amount of heat during the welding process so that the stacked parts are joined together without adding any product functionality. In one embodiment of the present invention, the transferrable electrode tip is a stainless-steel ball, the stacked anode current collector tabs are of nickel, and the cell casing is of stainless-steel.

公开(公告)号：US20240047757A1

公开(公告)日：2024-02-08

申请号：US18229695

申请日：2023-08-03

Applicant: GREATBATCH LTD.

Inventor： Brian D. Panzer ,  Jordan A. Hartwig ,  Gregory A. Voss ,  Joshua C. Ulrich ,  David Oddy ,  Alycia Kassian ,  Zachary Klein

IPC: H01M10/058 ,  H01M50/107 ,  H01M4/134 ,  H01M4/36 ,  H01M4/583 ,  H01M4/66 ,  H01M50/188

CPC classification number: H01M10/058 ,  H01M50/107 ,  H01M4/134 ,  H01M4/364 ,  H01M4/5835 ,  H01M4/662 ,  H01M50/188

Abstract: An electrochemical cell has a cylindrically-shaped casing tube with at least first and second lithium sheets swaged onto its inner surface. The first lithium sheet has respective spaced apart first right and left edges, and the second lithium sheet has spaced apart second right and left edges. The first and second right edges and the first and second left edges of the swaged first and second lithium sheets are adjacent to but spaced apart from each other by about 0.5° to about 1° about the inner circumference of the cylindrically-shaped casing tube. A novel process for swaging the first and second lithium sheets onto the inner surface of the casing tube is also described.

公开(公告)号：US11114661B2

公开(公告)日：2021-09-07

申请号：US16504423

申请日：2019-07-08

Applicant: Greatbatch Ltd.

Inventor： Kenneth B. Talamine ,  Brian D. Panzer

IPC: H01M50/536 ,  H01M4/485 ,  H01M4/48 ,  H01M4/583

Abstract: An electrochemical cell comprising an electrode assembly formed from an elongate anode that is folded into a serpentine configuration with a plurality of cathode plates interleaved between the folds is described. To make a robust and secure connection of the respective cathode tabs to a cathode terminal, the tabs are folded into an overlapping and stacked relationship. The proximal end of a metal strip is wrapped around the stacked cathode tabs and then a laser is used to weld through all layers of the metal strip and each of the bound cathode tabs. The laser welds are visible from the opposite side of the thusly formed strip-shaped hoop surrounding the stacked cathode tabs from which the laser beam first contacted the assembly. This provides the welding engineer with a visual indication that the welded connection of the metal strip-shaped hoop to the stacked cathode tabs is robust and structurally sound.

公开(公告)号：US20200020940A1

公开(公告)日：2020-01-16

申请号：US16504423

申请日：2019-07-08

Applicant: Greatbatch Ltd.

Inventor： Kenneth B. Talamine ,  Brian D. Panzer

IPC: H01M4/485 ,  H01M4/48 ,  H01M4/583

Abstract: An electrochemical cell comprising an electrode assembly formed from an elongate anode that is folded into a serpentine configuration with a plurality of cathode plates interleaved between the folds is described. To make a robust and secure connection of the respective cathode tabs to a cathode terminal, the tabs are folded into an overlapping and stacked relationship. The proximal end of a metal strip is wrapped around the stacked cathode tabs and then a laser is used to weld through all layers of the metal strip and each of the bound cathode tabs. The laser welds are visible from the opposite side of the thusly formed strip-shaped hoop surrounding the stacked cathode tabs from which the laser beam first contacted the assembly. This provides the welding engineer with a visual indication that the welded connection of the metal strip-shaped hoop to the stacked cathode tabs is robust and structurally sound.