Battery remaining capacity detection method and power supply...

Details Battery remaining capacity detection method and power supply... Battery remaining capacity detection method and power supply...

2006-01-10

2008-12-30

Ullah, Akm E (Department: 2838)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

C320S129000, C320S130000, C320S135000, C320S149000

Reexamination Certificate

active

07471067

ABSTRACT:
A battery remaining capacity detection method calculates a remaining capacity of a battery having the possibility that a memory effect occurs by using correlation between an voltage V0and the remaining capacity. Correlation between a reset voltage Vo resetthat is obtained by subtracting a value obtained by multiplying an occurrence amount Vmbased on the memory effect by a memory effect occurrence amount correction value C(SOC) from an initial voltage Vo iniand the remaining capacity is obtained, in the battery after use, based on correlation between the initial voltage Vo iniand the remaining capacity. The remaining capacity is obtained by setting the voltage V0of the battery after use as the reset voltage V0 reset. This method provides precise battery detection without completely discharging.

REFERENCES:
patent: 6417646 (2002-07-01), Huykman et al.
patent: 6515452 (2003-02-01), Choo
patent: 6700383 (2004-03-01), Kimura et al.
patent: 7078907 (2006-07-01), Uesaka et al.
patent: 2006/0022643 (2006-02-01), Brost et al.
patent: 56-126776 (1981-10-01), None

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