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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 11258092 B1

PDFFull Text
Date of Patent:
Feb. 22, 2022

Filed:

Feb. 11, 2021

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, the housing having a cell cup with a flat bottom area, and a cell top with a flat top area, and further includes an electrode-separator assembly winding 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 includes a positive electrode, a negative electrode, and a separator disposed between the positive electrode and the negative electrode. The button cell additionally includes a first output conductor between a first end face of the electrode-separator assembly winding and a first of the flat bottom area or the flat top area, and a second output conductor between a second end face of the electrode-separator assembly winding and a second of the flat bottom area or the flat top area. Furthermore, the button cell includes a first insulator and a second insulator.

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