Patent · US Active

Method for determining the state of charge of a battery in charging or discharging phase at constant current

US8102179B2 · kind B2 · utility

1Cited by

2References

6Claims

0Family size

Assignee

COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES · FR

Inventors

Remy Mingant · Brest, FR
Sebastien Martinet · Grenoble, FR
Christine Lefrou · Grenoble, FR

Key dates

Filing date	Jul 9, 2009
Grant date	Jan 24, 2012
Priority date	—
Expiry date	Sep 15, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/387
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The method for determining the state of charge of a battery can be used during charging or discharging of the battery at constant current. It comprises placing the battery in open circuit during a recovery period until the voltage at the terminals of said battery stabilizes at a voltage plateau. Then a constant test voltage is applied to the battery terminals during a preset test period. The state of charge of the battery corresponds to the current measured at the end of the test period by means of a previously obtained calibration curve.

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