Vehicle power supply system
First Claim
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1. 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.
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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.
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Citations
10 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification