Remaining electrical charge/remaining capacity estimating...

Details Remaining electrical charge/remaining capacity estimating... Remaining electrical charge/remaining capacity estimating...

2007-12-03

2011-12-13

Dunn, Drew A (Department: 2857)

Data processing: measuring, calibrating, or testing

Measurement system in a specific environment

Electrical signal parameter measurement system

C702S057000, C702S064000, C702S065000, C702S127000

Reexamination Certificate

active

08078416

ABSTRACT:
A method for estimating a remaining electrical charge or a remaining capacity of a battery that supplies power to a load, the method including: using, at a controller of a battery system, an approximate exponential decay function including a plurality of exponential function terms of time and a plurality of coefficients; stopping, at the battery system, a charge or discharge operation of the battery for a predetermined time; measuring, at a sensor of the battery system, a voltage of the battery at a plurality of instances during the predetermined time; obtaining, at the controller of the battery system, a relationship between the voltage of the battery and time; determining, at the controller of the battery system, the coefficients based on the obtained relationship between the voltage of the battery and the time.

REFERENCES:
patent: 6531875 (2003-03-01), Satake
patent: 6794876 (2004-09-01), Kawaguchi et al.
patent: 2006/0208704 (2006-09-01), Iwane et al.
patent: 1643260 (2006-04-01), None
patent: 8-179018 (1996-07-01), None
patent: 7-98367 (1998-04-01), None
patent: 2002-234408 (2002-08-01), None
patent: 2003-75518 (2003-03-01), None
patent: 2003-307556 (2003-10-01), None
patent: 2005-43339 (2005-02-01), None
patent: 2005-006006 (2005-01-01), None
U.S. Appl. No. 12/014,502, filed Jan. 15, 2008, Iwahana et al.
U.S. Appl. No. 12/041,972, filed Mar. 4, 2008, Iwane.
U.S. Appl. No. 12/049,907, filed Mar. 17, 2008, Iwane et al.

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