POWER SOURCE CONTROL UNIT OF ELECTRIC SUPERCHARGER
First Claim
1. A power source control unit of an electric supercharger comprising:
- an electric supercharger located at an intake passage of an internal combustion engine and driven by an electric motor;
an inverter making a drive control of said electric supercharger; and
a power supply control unit controlling 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,said power supply control unit including;
a generator generating an electric power using a power of the internal combustion engine;
a first battery for supplying an electric power to said on-vehicle electrical equipment;
voltage detection means detecting a voltage of said first battery;
a second battery for supplying an electric power to said electric supercharger;
operating power detection means detecting an operating power of said electric supercharger;
switching means making a switch between said first battery and said second battery;
current amount detection means detecting the amount of current carried through said switching means; and
a controller controlling said switching means, andsaid controller controlling said switching means in accordance with a voltage of said first battery that said voltage detection means detects, an operating power of said electric supercharger that said operating power detection means detects, and an electric current carried through said switching means.
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 unit of an electric supercharger comprising:
- an electric supercharger located at an intake passage of an internal combustion engine and driven by an electric motor;
an inverter making a drive control of said electric supercharger; and
a power supply control unit controlling 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,said power supply control unit including;
a generator generating an electric power using a power of the internal combustion engine;
a first battery for supplying an electric power to said on-vehicle electrical equipment;
voltage detection means detecting a voltage of said first battery;
a second battery for supplying an electric power to said electric supercharger;
operating power detection means detecting an operating power of said electric supercharger;
switching means making a switch between said first battery and said second battery;
current amount detection means detecting the amount of current carried through said switching means; and
a controller controlling said switching means, andsaid controller controlling said switching means in accordance with a voltage of said first battery that said voltage detection means detects, an operating power of said electric supercharger that said operating power detection means detects, and an electric current carried through said switching means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
- an electric supercharger located at an intake passage of an internal combustion engine and driven by an electric motor;
Specification