POWER SUPPLY DEVICE FOR VEHICLE
First Claim
1. A vehicle power supply device configured for use in a vehicle equipped with an engine and a load, the device comprising:
- an electric generator generating electric power by using the engine;
a main power supply coupled electrically with the electric generator;
a starter coupled electrically with the main power supply;
a first switch coupled electrically with the main power supply;
a power storage part coupled electrically with the first switch via a DC/DC converter;
a second switch coupled electrically between the main power supply and the power storage part; and
a control part coupled electrically with the first switch, the DC/DC converter, and the second switch,the load being coupled electrically with the main power supply via the first switch, the control part controlling the DC/DC converter to charge regenerative electric power into the power storage part with the first switch being turned ON and the second switch being turned OFF when the electric generator generates the regenerative electric power,wherein,when the vehicle is in a period of no-idling and the main power supply is not deteriorated, the control part controls the DC/DC converter such that, in preference to the main power supply, the regenerative electric power charged into the power storage part is supplied to the load, and the control part drives the starter on electric power of the main power supply such that the starter restarts the engine with the first switch being turned OFF before restarting the engine, andwhereinwhen the vehicle is in the period of no-idling and the main power supply is deteriorated, the control part supplies the electric power of the main power supply to the load, and the control part drives the starter both on the electric power of the main power supply and on the regenerative electric power of the power storage part such that the starter restarts the engine with the first switch being turned OFF and the second switch being turned ON before restarting the engine.
3 Assignments
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Accused Products
Abstract
A vehicle power supply device is provided which is capable of improving fuel efficiency by lengthening a period of no-idling even if a main power supply thereof is deteriorated. The device is configured for use in a vehicle having an engine and a load, and includes an electric generator, a main power supply, a starter, a first switch, a power storage part, a second switch, and a control part. In the case of the main power supply being deteriorated, the control part causes the main power supply to supply electric power thereof to the load in the period of no-idling of the vehicle, and the control part controls, when the engine is restarted, such that the starter is driven on both the electric power of the main power supply and regenerative electric power of the power storage part, with the first switch being OFF and the second switch being ON.
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Citations
6 Claims
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1. A vehicle power supply device configured for use in a vehicle equipped with an engine and a load, the device comprising:
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an electric generator generating electric power by using the engine; a main power supply coupled electrically with the electric generator; a starter coupled electrically with the main power supply; a first switch coupled electrically with the main power supply; a power storage part coupled electrically with the first switch via a DC/DC converter; a second switch coupled electrically between the main power supply and the power storage part; and a control part coupled electrically with the first switch, the DC/DC converter, and the second switch, the load being coupled electrically with the main power supply via the first switch, the control part controlling the DC/DC converter to charge regenerative electric power into the power storage part with the first switch being turned ON and the second switch being turned OFF when the electric generator generates the regenerative electric power, wherein, when the vehicle is in a period of no-idling and the main power supply is not deteriorated, the control part controls the DC/DC converter such that, in preference to the main power supply, the regenerative electric power charged into the power storage part is supplied to the load, and the control part drives the starter on electric power of the main power supply such that the starter restarts the engine with the first switch being turned OFF before restarting the engine, and wherein when the vehicle is in the period of no-idling and the main power supply is deteriorated, the control part supplies the electric power of the main power supply to the load, and the control part drives the starter both on the electric power of the main power supply and on the regenerative electric power of the power storage part such that the starter restarts the engine with the first switch being turned OFF and the second switch being turned ON before restarting the engine. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification