Electric drive device for vehicle and hybrid engine/motor-type four wheel drive device
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United States of America Patent
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Oct 9, 2007
Grant Date -
Jul 13, 2006
app pub date -
Apr 2, 2004
filing date -
Apr 4, 2003
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vehicle electric drive system and a hybrid engine-motor type vehicle drive system realizing simplification and miniaturization of electric parts and, moreover, reduction in cost while maintaining performances can be provided. A part 1 of wheels is driven by an engine. The wheels are driven by a motor as necessary. The motor, a generator, and an accessory battery are connected to each other via a voltage step-up/step-down device. The voltage step-up/step-down device has a function of stepping up power of the battery and supplying the stepping up power to the motor, and a function of stepped down power of the generator and supplying the stepped down power to the battery and the accessories.
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