Enhanced-accuracy battery capacity prediction using multiple...

Details Enhanced-accuracy battery capacity prediction using multiple... Enhanced-accuracy battery capacity prediction using multiple...

2006-11-29

2009-06-02

Tso, Edward (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

Reexamination Certificate

active

07541775

ABSTRACT:
Enhanced-accuracy battery capacity prediction in which a residual capacity of a battery associated with a mobile electronic device are determined and displayed. One or more characteristic values of the battery are detected and an appropriate battery discharge curve is selected from multiple stored battery discharge curves based on the electrical current supply rate or a number of historical charge/discharge cycles of the battery, or both. A detected battery voltage is compared to the selected curve, and the residual capacity of the battery is calculated based on the present discharge capacity and the useful discharge capacity of the battery based on the selected curve. The residual capacity accurately reflects the present operational state of the device and the present state of the battery. The accurate residual capacity of the battery is displayed on a display device for user viewing.

REFERENCES:
patent: 6087808 (2000-07-01), Pritchard
patent: 6529840 (2003-03-01), Hing
patent: 2004/0160224 (2004-08-01), Yamazaki
patent: 0 583 906 (1993-07-01), None
European Communication dated Aug. 4, 2008 for Application No. 07100291.9, 1 page.

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