Patent · US Active

Systems and methods for determining the state of charge of a battery utilizing confidence values

US8645088B2 · kind B2 · utility

20Cited by

3References

20Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Sascha Schaefer · Bad Camberg, DE
Andreas Koenekamp · Darmstadt, DE

Key dates

Filing date	May 13, 2011
Grant date	Feb 4, 2014
Priority date	—
Expiry date	Mar 23, 2032

Classification

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

Abstract

Systems and methods to determine a state of charge (SOC) of a battery using confidence values. SOC estimations are determined using a voltage-based estimation strategy and a current-based estimation strategy. Confidence values are also generated for the voltage-based SOC estimation and the current-based SOC estimation to quantify the amount of uncertainty associated with the SOC estimations. An overall SOC estimation is determined by comparing the confidence values and selecting the SOC estimation having the least amount of uncertainty.

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