Dual-power-supply system
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United States of America Patent
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Sep 13, 2011
Grant Date -
Sep 2, 2010
app pub date -
May 12, 2010
filing date -
Nov 14, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
A dual-power-supply system uses both a fuel cell and a chargeable secondary battery. A differential voltage adding unit adds a differential voltage between the voltage of the fuel cell and a necessary target output voltage to the voltage of the fuel cell by using the secondary battery, thereby obtaining an output voltage of the dual-power-supply system. A control unit detects the output voltage, and controls the differential voltage adding unit such that the output voltage is equal to the target output voltage.
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