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US 2006/0038532 A1Published application
Vehicle-mounted power supply system
AssigneeDenso Corporation
InventorMakoto Taniguchi
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AssigneeDenso Corporation
InventorMakoto Taniguchi
Estimating the term…
A vehicle-mounted power supply system comprises a first storage battery, an automotive generator for generating electrical energy and charging the first storage battery with the generated electrical energy. A second storage battery is connected to an electrical load and a power converter supplies electric energy from the first storage battery to the second storage battery. A controller, or battery-monitoring unit, sets the power converter in a sleep mode when the vehicle engine is stopped, periodically detects the voltage of the second storage battery as a pseudo-open circuit voltage during the sleep mode of the power converter if current of the second storage battery is within a predetermined range, estimates a state of charge of the second storage battery from the detected pseudo-open circuit voltage and sets the power converter in a run mode when the estimated state of charge is lower than a predetermined value.
A vehicle-mounted power supply system comprising:
A method of operating a vehicle-mounted power supply system which comprises a first storage battery, an automotive generator driven by an engine for generating electrical energy and charging the first storage battery with the generated electrical energy, a second storage battery connected to an electrical load, and a power converter for supplying electric energy from said first storage battery to said second storage battery, the method comprising the steps of:
Dependencies are inferred from the claim text.