Patent · US Active

Button cells and method of producing same

US11233264B2 · kind B2 · utility

0Cited by

84References

20Claims

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	Sep 6, 2017
Grant date	Jan 25, 2022
Priority date	—
Expiry date	Sep 6, 2037

Classification

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

Abstract

A rechargeable button cell including a housing half-parts comprising a housing cup and a housing top separated from one another by an electrically insulating seal or film seal is disclosed. The button cell includes an electrode-separator assembly within the housing having a positive and a negative electrode in the form of flat layers connected to one another by a porous plastic film separator. The electrodes each include a metallic film or mesh embedded in a respective electrode material as a current collector, which acts as an output conductor that connects the electrodes to one of the flat bottom or flat top areas of the housing.

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