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US 8,860,361 B2Granted
Vehicle power supply system
AssigneeMitsubishi Electric Corporation
InventorYosuke Fukuzawa
Life of this patent
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Abstract
A vehicle power supply system includes a power monitor device that detects supply power from a battery and a generator to a home electrical appliance and a control unit that performs a supply power excess determination and a supply power variance determination using a detection value of the power monitor device when a driving of a vehicle is stopped to control a rotational speed of an engine according to determination results.
Claims10
A vehicle power supply system that supplies power from a generator driven by an internal combustion engine to an external electrical device through power conversion, the system comprising:
- a battery that is charged by the generator and supplies the external electrical device with power in response to an increase of power required by the external electrical device;
- a stop state detection portion that detects a drive stop state of the vehicle;
- a current detection unit that detects a supply current from the battery and the generator to the external electrical device;
- a supply current excess determination unit that calculates a charge and discharge state of the battery on the basis of whether the supply current exceeds or falls short of a generation current of the generator using a detection result of the current detection unit;
- a supply current variance determination unit that calculates a variation of the supply current using the detection result of the current detection unit;
- and
- a control unit that controls a rotational speed of the internal combustion engine according to a calculation result of the supply current excess determination unit and a calculation result of the supply current variance determination unit when the stop state detection portion detects a drive stop state of the vehicle.
4 more elements
Dependencies are inferred from the claim text.