Hybrid battery and full charge capacity calculation method...

Details Hybrid battery and full charge capacity calculation method... Hybrid battery and full charge capacity calculation method...

2007-08-22

2010-06-15

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

Reexamination Certificate

active

07737660

ABSTRACT:
A hybrid battery and full charge capacity calculation method thereof. A full charge capacity is calculated for each battery at at least two discharge voltage levels, and a total full charge capacity is calculated by adding the calculated full charge capacity of the discharging battery to a full charge capacity of a non-discharging battery. A hybrid battery includes: a first power source and a second power source; a sense resistor that senses and outputs current information of at least one of the first power source or the second power source; and a fuel gauge circuit that calculates a first accumulated discharge amount using the current information from the sense resistor when a voltage of a currently discharging one of the first or second power source reaches a first discharge voltage level, and to add a first capacity corresponding to the first discharge voltage level to the first accumulated discharge amount.

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Patent Abstracts of Japan, Publication No. 2002-243813, dated Aug. 28, 2002, in the name of Norihiko Hirata.

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