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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11233265 B1

PDFFull Text
Date of Patent:
Jan. 25, 2022

Filed:

Mar. 06, 2020

Button cells and method of producing same

Applicant:

Varta Microbattery Gmbh, Ellwangen, DE;

Inventors:

Eduard Pytlik, Ellwangen, DE;

Jürgen Lindner, Ellwangen, DE;

Ulrich Barenthin, Ellwangen, DE;

Winfried Gaugler, Ellwangen, DE;

Assignee:

VARTA MICROBATTERY GMBH, Ellwangen, DE;

Attorney:

Leydig, Voit & Mayer, Ltd.

Primary Examiner:

Cynthia H Kelly

Assistant Examiner:

Julian Anthony

Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 6/10 (2006.01); H01M 6/12 (2006.01); H01M 6/46 (2006.01); H01M 2/02 (2006.01); H01M 6/08 (2006.01); H01M 4/13 (2010.01); H01M 4/58 (2010.01); H01M 10/04 (2006.01); H01M 10/05 (2010.01); H01M 10/24 (2006.01); H01M 10/34 (2006.01); H01M 50/109 (2021.01); H01M 50/124 (2021.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 10/0431 (2013.01); H01M 6/10 (2013.01); H01M 10/0427 (2013.01); H01M 10/05 (2013.01); H01M 10/0525 (2013.01); H01M 10/24 (2013.01); H01M 10/34 (2013.01); H01M 10/345 (2013.01); H01M 50/109 (2021.01); H01M 50/124 (2021.01); Y02E 60/10 (2013.01); Y02P 70/50 (2015.11); Y10T 29/4911 (2015.01); Y10T 29/49108 (2015.01);
Abstract

A button cell includes a housing having a cell cup, the cell cup having a flat bottom area, a cell cup casing, and a bottom edge forming a transition between the flat bottom area and the cell cup casing, and a cell top, the cell top having a flat top area and a cell top casing. An electrode-separator assembly winding is disposed within the housing, the electrode-separator assembly winding including a multi-layer assembly that is wound in a spiral shape about an axis, the multi-layer assembly including a separator disposed between a positive electrode and a negative electrode, and a first output conductor. An insulator is disposed between an end face of the electrode-separator assembly winding and the first output conductor, wherein the first output conductor is welded to the first of the flat bottom area or the flat top area.

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