Invention Grant
- Patent Title: Button cell having winding electrode and method for the production thereof
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Application No.: US16813776Application Date: 2020-03-10
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Publication No.: US10971776B2Publication Date: 2021-04-06
- Inventor: Winfried Gaugler
- Applicant: VARTA Microbattery GmbH
- Applicant Address: DE Ellwangen
- Assignee: VARTA Microbattery GmbH
- Current Assignee: VARTA Microbattery GmbH
- Current Assignee Address: DE Ellwangen
- Agency: Leydig, Voit & Mayer, Ltd.
- Priority: DE102009030359.6 20090618,DE102009060800.1 20091231
- Main IPC: H01M4/00
- IPC: H01M4/00 ; H01M6/10 ; H01M6/12 ; H01M6/46 ; H01M2/02 ; H01M2/08 ; H01M4/82 ; H01M6/00 ; H01M50/109 ; H01M10/04 ; H01M10/0587 ; H01M50/56 ; H01M50/166 ; H01M50/171 ; H01M50/172 ; H01M50/538 ; H01M10/0525

Abstract:
A method for producing a button cell includes: providing a metal cell cup having a cell cup plane region; providing a metal cell top having a cell top plane region; providing a cylindrical electrode winding, the electrode winding being a multi-layer assembly wound in a spiral shape, the multi-layer assembly including an electrode formed from a current collector; connecting a conductor to the current collector; placing the electrode winding into the cell top; inserting the cell top into the cell cup to form a housing in which a strip-shaped portion of the conductor lies flat between (i) an end side of the electrode winding and (ii) a plane region of the cell cup plane region or the cell top plane region; and welding, after forming the housing, the strip-shaped portion of the conductor to a surface of the plane region located in the interior of the housing.
Public/Granted literature
- US20200212374A1 BUTTON CELL HAVING WINDING ELECTRODE AND METHOD FOR THE PRODUCTION THEREOF Public/Granted day:2020-07-02
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