Power source control unit of electric supercharger
First Claim
1. A power source control apparatus comprising:
- an inverter which drives an electric motor of an electric supercharger and detects the operating power of said electric supercharger; and
a power supply control unit which controls a power supply to said electric supercharger via said inverter and a power supply to an on-vehicle electrical equipment other than said electric supercharger, and includes;
a generator which generates electric power using a power of an internal combustion engine,a first battery which supplies electric power to said on-vehicle electrical equipment,a voltage detector which detects a voltage of said first battery,a second battery which supplies electric power to said inverter,a switch which switches between said first battery and said second battery,a current amount detector which detects an amount of current carried through said switch, anda controller which controls said switch in accordance with the voltage of said first battery that said voltage detector detects, the operating power of said electric supercharger that said inverter detects, and the amount of the electric current carried through said switch.
1 Assignment
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Accused Products
Abstract
An on-off switch is provided between a first battery acting to supply an electric power to on-vehicle electrical equipment and a second battery acting to supply an electric power to an electric supercharger. In the case that charge voltage of the first battery is smaller than a predetermined value and operating power of an electric supercharger 3 is larger than a predetermined value, the on-off switch is opened to suppress electrical effects on the on-vehicle electrical equipment. In other cases, the on-off switch is closed and the second battery is charged by a generator and the first battery. As a result, it is possible to suppress adverse effects on the on-vehicle electrical equipment due to voltage drop or voltage fluctuation of a power source occurring by driving the electric supercharger and thus to make a stable power supply.
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Citations
20 Claims
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1. A power source control apparatus comprising:
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an inverter which drives an electric motor of an electric supercharger and detects the operating power of said electric supercharger; and a power supply control unit which controls a power supply to said electric supercharger via said inverter and a power supply to an on-vehicle electrical equipment other than said electric supercharger, and includes; a generator which generates electric power using a power of an internal combustion engine, a first battery which supplies electric power to said on-vehicle electrical equipment, a voltage detector which detects a voltage of said first battery, a second battery which supplies electric power to said inverter, a switch which switches between said first battery and said second battery, a current amount detector which detects an amount of current carried through said switch, and a controller which controls said switch in accordance with the voltage of said first battery that said voltage detector detects, the operating power of said electric supercharger that said inverter detects, and the amount of the electric current carried through said switch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification