Patent · US Expired

Method for determining the amount of charge which can still be drawn from an energy storage battery, and an energy storage battery

US6861842B2 · kind B2 · utility

8Cited by

6References

46Claims

0Family size

Assignee

VB Autobatterie GmbH · DE

Inventors

Peter Baeuerlein · Schillingsfürst, DE
Frank Helkmer · Hannover, DE
Eberhard Meissner · Hofheim, DE
Ingo Koch · Hameln, DE

Key dates

Filing date	Jul 16, 2003
Grant date	Mar 1, 2005
Priority date	—
Expiry date	Aug 17, 2023

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/3842
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method for determining the amount of charge which can still be drawn from an energy storage battery includes measuring current values and voltage values at at least two times in a voltage response of the energy storage battery to at least one current pulse, with one voltage/current value pair being obtained for each of the at least two times. The method also includes calculating a resistance difference characteristic variable utilizing the measured voltage/current value pairs. The method also includes determining of the amount of charge which can still be drawn from the energy storage battery utilizing the resistance difference characteristic variable. An energy storage battery having measurement means and processor-controlled evaluation means may be provided for carrying out the method.

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