Patent · US Active

Button cells and method of producing same

US9799913B2 · kind B2 · utility

4Cited by

24References

8Claims

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	Oct 3, 2016
Grant date	Oct 24, 2017
Priority date	—
Expiry date	Oct 3, 2036

Classification

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

Abstract

A button cell includes a housing cup and a top separated by a seal and forms a housing with parallel flat bottom and top areas, and an electrode-separator assembly including a flat positive and negative electrode and connected by one flat separator, wherein the electrodes are aligned essentially at right angles to the flat bottom and top areas and the assembly is a spiral winding having end faces defining side surfaces of the winding facing in an axial direction relative to the flat bottom and top areas, one of the electrodes connects to the flat bottom or top area via an output conductor including a foil resting between an end face of the winding and the flat top or bottom area, and at least one insulator preventing direct mechanical and electrical contact between the end faces of the winding and the flat bottom and top areas.

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