Electricity: battery or capacitor charging or discharging – Battery or cell discharging – Regulated discharging
Reexamination Certificate
2008-01-08
2008-01-08
Easthom, Karl (Department: 2838)
Electricity: battery or capacitor charging or discharging
Battery or cell discharging
Regulated discharging
C320S104000, C324S424000, C324S425000, C324S426000, C324S427000
Reexamination Certificate
active
07317300
ABSTRACT:
A voltage control apparatus checks a battery voltage when an automotive generator gradually increases its output to be within a predetermined range after temporarily stopping the generator. Then, the battery voltage is picked up to calculate the charge rate. Further, a first charge rate and a first residual capacity of the battery is memorized when the engine is stopped. Periodically, a pseudo-open circuit voltage is checked when a charge/discharge current fits within a predetermined small range while the engine is not running, and a second charge rate calculated based on the checked pseudo-open circuit voltage. A second residual capacity is calculated using the first charge rate, the first residual capacity and the second charge rate.
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Ichikawa Atsushi
Sada Takeshi
Taniguchi Makoto
Berhanu Samuel
Denso Corporation
Easthom Karl
Oliff & Berridge PLC.
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