Patent · US Expired

Method of periodic refresh charging of storage battery packs

US7012406B2 · kind B2 · utility

0Cited by

5References

16Claims

0Family size

Assignee

Hilti Aktiengesellschaft · LI

Inventors

Bernd Heigl · Augsburg, DE
Bernd Ziegler · Ludwigshafen, DE

Key dates

Filing date	Dec 3, 2003
Grant date	Mar 14, 2006
Priority date	—
Expiry date	May 25, 2024

Classification

Technology area (CPC H)Electricity
CPC primaryH02J7/007194
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A charging method for a battery pack with each of the at least two series-connected cells being supplied with an effective charging current (ICharge), in a charging cycle (1) over a charging period, and being supplied with a lower effective refresh current. (Irefresh), in an at least occasional subsequent refresh cycle (2) over a refresh charging cycle (6). The refresh cycle (2) follows after a period (K) in a number (M) of charging cycles (1).

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