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.

公开(公告)号：US10446825B2

公开(公告)日：2019-10-15

申请号：US15834724

申请日：2017-12-07

Applicant: Greatbatch Ltd.

Inventor： Gregory A. Voss ,  Tina L. Urso ,  Kenneth B. Talamine

IPC: H01M2/36 ,  H01M2/02 ,  H01M2/04 ,  H01M2/06

Abstract: A closure system for the electrolyte fill port of an electrochemical cell is described. A cell header has an electrolyte fill port comprising an upper opening sidewall extending from a header upper surface to an intermediate ledge located part-way through the header thickness. The ledge extends from a lower edge of the upper opening sidewall to an upper edge of a lower opening sidewall, the lower opening sidewall extending to the header lower surface. With respect to an axis of the electrolyte fill port, the upper opening sidewall has a first radius r1 and the lower opening sidewall has a second radius r2 at the ledge, the lower opening sidewall extending downwardly and inwardly along the axis from the second radius r2 to a third radius r3 at the header lower surface. The second radius r2 at the ledge is greater than the third radius r3 at the header lower surface. A closure system for an electrolyte fill port comprises a lower closure member secured to the lower opening sidewall by a lower weld; and an upper closure member secured to the upper opening sidewall by an upper weld. Importantly, the lower opening sidewall is provided with rifling.

公开(公告)号：US20180159113A1

公开(公告)日：2018-06-07

申请号：US15834724

申请日：2017-12-07

Applicant: Greatbatch Ltd.

Inventor： Gregory A. Voss ,  Tina L. Urso ,  Kenneth B. Talamine

IPC: H01M2/36 ,  H01M2/02

CPC classification number: H01M2/365 ,  H01M2/0202 ,  H01M2/0217 ,  H01M2/0285 ,  H01M2/0426 ,  H01M2/06 ,  H01M2/361 ,  H01M2/367 ,  H01M2002/0297

Abstract: A closure system for the electrolyte fill port of an electrochemical cell is described. A cell header has an electrolyte fill port comprising an upper opening sidewall extending from a header upper surface to an intermediate ledge located part-way through the header thickness. The ledge extends from a lower edge of the upper opening sidewall to an upper edge of a lower opening sidewall, the lower opening sidewall extending to the header lower surface. With respect to an axis of the electrolyte fill port, the upper opening sidewall has a first radius r1 and the lower opening sidewall has a second radius r2 at the ledge, the lower opening sidewall extending downwardly and inwardly along the axis from the second radius r2 to a third radius r3 at the header lower surface. The second radius r2 at the ledge is greater than the third radius r3 at the header lower surface. A closure system for an electrolyte fill port comprises a lower closure member secured to the lower opening sidewall by a lower weld; and an upper closure member secured to the upper opening sidewall by an upper weld. Importantly, the lower opening sidewall is provided with rifling.