Simple method for accurately determining a state of charge...

Details Simple method for accurately determining a state of charge... Simple method for accurately determining a state of charge...

2011-08-30

2011-08-30

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

Reexamination Certificate

active

08008891

ABSTRACT:
A battery management system using a measurement model modeling a battery, and estimating a SOC (state-of-charge) of the battery, and a battery driving method thereof. The battery management system is constructed with a sensor, a predictor, a data rejection unit, and a measurement unit. The sensor senses a charging and discharging current flowing through the battery, a temperature of the battery, a terminal voltage of the battery. The predictor counts the charging and discharging current, and estimates the state-of-charge of the battery. The data rejection unit generates information associated with an error generated from the measurement model, as a function of at least one of the battery temperature, the charging and discharging current, the state-of-charge, and a dynamic of the charging and discharging current. The measurement unit corrects the estimated state-of-charge of the battery, using the measurement model and the information associated with the error.

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European Search Report corresponding to European Patent Application No. 07111015.9, Issued on Sep. 19, 2007.
Japanese Office Action issued by JPO, dated Jan. 19, 2011, corresponding to Japanese Patent Application No. 2007-152766, together with Request for Entry.

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