Patent · US Active

Button cells and method of producing same

US9496581B2 · kind B2 · utility

5Cited by

14References

13Claims

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	Aug 17, 2015
Grant date	Nov 15, 2016
Priority date	—
Expiry date	Aug 17, 2035

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 housing top separated from one another by an insulating seal and which form a housing with a flat bottom and a flat top parallel to it, and an electrode-separator assembly within the housing including flat layer positive and negative electrodes and connected to one another by a flat separator, wherein the layers are aligned essentially at right angles to the flat bottom and the flat top and the electrode-separator assembly is a spiral winding having end faces defining side surfaces of the spiral winding facing in an axial direction relative to the flat bottom and the flat top, and one of the electrodes connects to the flat bottom or the flat top via an output conductor including a thin film resting flat between an end face of the spiral winding and the flat top or the flat bottom.

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