Patent · US Expired

Rechargeable electrochemical battery cell

US7901811B2 · kind B2 · utility

14Cited by

2References

30Claims

0Family size

Assignee

G. Hambitzer · DE

Inventors

Guenther Hambitzer · Remchingen, DE
Claudia Wollfarth · Karlsruhe, DE
Ingo Stassen · Dresden, DE
Klaus Schorb · Rheinstetten, DE
Christiane Ripp · Remchingen, DE

Key dates

Filing date	Jan 16, 2003
Grant date	Mar 8, 2011
Priority date	—
Expiry date	Mar 4, 2026

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to a rechargeable electrochemical battery cell. Said cell comprises a negative electrode (5), an electrolyte (19), and a positive electrode, the negative electrode (5) having a an electronically conductive substrate (14), onto which an active mass (15) is electrolytically deposited during the charging of the cell. The aim of the invention is to significantly improve the operational safety of said cell. To achieve this, the cell in contact with the substrate (14)of the negative electrode (5) has a porous structure (16)formed by solid particles (17), which is configured and positioned in such a way that the active mass (15), which is deposited during the charging of the cell, penetrates from the surface of the substrate (14) into the pores (18) of the latter and is deposited again therein.

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