Patent · US Active

Method for determining a current state of charge value of a battery, battery arrangement, and motor vehicle

US10732227B2 · kind B2 · utility

1Cited by

0References

9Claims

0Family size

Assignee

AUDI AG · DE

Inventors

Rolf Naumann · Krefeld, DE
Matthias H. Kraus · Bethesda, US

Key dates

Filing date	Jul 17, 2018
Grant date	Aug 4, 2020
Priority date	—
Expiry date	Jan 29, 2039

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/389
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

The invention relates to a method for determining a current state of charge value (SOC0, SOC1, SOC2) of a battery of a specific battery type, wherein a field of characteristic curves is provided, which, for certain different predetermined temperature ranges (ΔT), specifies an internal resistance (Ri) for the specific battery type in dependence on the state of charge (SOC) for the specific battery type, a current temperature (T) of the battery is measured, a current internal resistance value (Ri0, Ri1) of the battery is determined, and, on the basis of the current temperature (T) and the current internal resistance value (Ri0, Ri1), the current state of charge value (SOC0, SOC1, SOC2) of the battery is determined by means of the field of characteristic curves.

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