Patent · US Active

Button cells and method of producing same

US11791493B2 · kind B2 · utility

0Cited by

86References

30Claims

0Family size

Assignee

VARTA MICROBATTERY GMBH · DE

Inventors

Eduard Pytlik · Ellwangen, DE
Jürgen Lindner · Worms, DE
Ulrich Barenthin · Ellwangen, DE
Winfried Gaugler · Ellwangen, DE

Key dates

Filing date	Feb 17, 2020
Grant date	Oct 17, 2023
Priority date	—
Expiry date	Feb 17, 2040

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/4911
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for producing a button cell includes providing a cell cup, a cell top and an electrode-separator assembly winding, the electrode-separator assembly winding having a positive electrode and a negative electrode. An electrically insulating seal is applied at least to an outer portion of the cell top casing. The electrode-separator assembly winding is inserted into the cell top. The cell top is inserted into the cell cup to form a housing. A pressure is applied in a radial direction perpendicular to an axis of the electrode-separator assembly winding so as to seal the housing.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.