Patent · US Expired

Electrochemical element in the form of a button cell, and a method for producing an electrochemical element

US7276092B2 · kind B2 · utility

20Cited by

1References

4Claims

0Family size

Assignee

VARTA MICROBATTERY GMBH · DE

Inventors

Konrad Holl · Aalen, DE
Alfons Joas · Dinkelsbühl, DE
Horst Wagner · Midland School, US
Kemal Akca · Ellwangen, DE
Arno Perner · Olching, DE
Dejan Ilic · Ellwangen (Jagst), DE

Key dates

Filing date	Mar 15, 2004
Grant date	Oct 2, 2007
Priority date	—
Expiry date	Jan 7, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T29/49114
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An electrochemical element in the form of a button cell having at least one lithium-intercalating electrode, wherein the cell cover or the cell cup has an opening which is closed in a sealed manner during the formation process. Once the formation process has been completed, it is opened briefly for gas to escape from the cell, and is then closed in a gastight manner. The cell cover and the cell cup are composed in particular of metal. The opening can be closed by a metal or metal/plastic composite sheet, which is adhesively bonded or welded to the cell cover or to the cell cup.

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