06789026 is referenced by 60 patents.

A processor (

13

) operates to determine amount of charge presently stored in a battery by determining that the battery is in a zero-current relaxed condition. Circuitry (

16,23

) including a first ADC (

16

) measures an open circuit voltage (OCV) of the battery prior to a period of time during which flow of current through the battery is not negligible. A program executed by the processor correlates the measured open circuit voltage (OCV

0

) with a corresponding value of the variable and selects the corresponding value as a value of the variable.

Title
Circuit and method for monitoring battery state of charge
Application Number
10/428689
Publication Number
6789026 (B2)
Application Date
May 2, 2003
Publication Date
September 7, 2004
Inventor
David L Freeman
McKinley
TX, US
Dan R Poole
Austin
TX, US
Evgenij Barsoukov
Dallas
TX, US
Agent
Frederick J Telecky Jr
US
W James Brady
US
W Daniel Swayze Jr
US
Assignee
Texas Instruments Incorporated
TX, US
IPC
G01R 31/36
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