Patent · US Active

Method and apparatus for determining the state-of-charge of a battery

US9885757B2 · kind B2 · utility

9Cited by

6References

23Claims

0Family size

Assignee

Atieva, Inc. · US

Inventors

Albert Liu · Dongguan, CN
Steven Diamond · San Mateo, US
Sam Weng · Cupertino, US

Key dates

Filing date	Mar 28, 2012
Grant date	Feb 6, 2018
Priority date	—
Expiry date	Jan 3, 2035

Classification

Technology area (CPC G)Physics
CPC primaryG01R31/396
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

A method and apparatus for determining the state-of-charge of a battery. In response to detecting that the battery is in a rest state, a pre-conditioning current is drawn from the battery to affect a correlation between the state-of-charge of the battery and an open-circuit voltage of the battery. Thereafter, the open-circuit voltage of the battery is measured, and used to determine the state-of-charge.

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