System and method for driving electric vehicle

A system for driving an electric vehicle having a battery, an engine and vehicle differential gears comprising:

• a speed-torque converter having a housing, an input shaft disposed in said housing and connected to said engine at a side, an output shaft disposed coaxially with said input shaft and connected to said vehicle differential gears at the same side, a first rotor having a first control coil, a stator having a second control coil, a second rotor having a first member for generating magnetic field interlinking said first control coil and a second member for generating magnetic field interlinking said second control coil;
• means for detecting rotation of said first rotor and said second rotor;
• and
• means, connected to said battery, said first and second control coils and said rotation detecting means, for supplying said first and second control coils with control electric current according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle at a set rotational speed with a set torque, last said means comprising means for controlling said engine to operate as a brake member when said vehicle drive member drives said output shaft.

A system for driving an electric vehicle having a battery, an engine and a vehicle drive member comprising:

• a speed-torque converter having a housing, an input shaft connected to said engine, an output shaft connected to said vehicle drive member, a first rotor having a first control coil, a stator having a second control coil, a second rotor having a first member for generating magnetic field interlinking said first control coil through a magnetic path and a second member for generating magnetic field interlinking said second control coil through the same magnetic path;
• means for detecting rotation of said first rotor and said second rotor;
• and
• means, connected to said battery, said first and second control coils and said rotation detecting means, for supplying said first and second control coils with control electric current according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque.

A system for driving an electric vehicle having a battery, an engine and a vehicle drive member comprising:

• a first electromagnetic rotary unit having an input shaft connected to said engine, a first rotor connected to said input shaft and having a first control coil, a first member for generating magnetic field interlinking said first control coil;
• a second electromagnetic rotary unit having an output shaft connected to said vehicle drive member, a stator having a second control coil and a second rotor connected to said output shaft and having a second member for generating magnetic field interlinking said second control coil, said second rotor being fixed to said first member ;
• means for detecting rotation of said first rotor and said second rotor;
• and
• means, connected to said batter y, said first and second control coils and said rotation detecting means, for supplying said first and second control coils with control electric current according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque.

A system for driving a vehicle having a battery, an engine and a vehicle-wheel drive member comprising:

• a housing;
• a rotary electric machine, disposed in said housing and including an input shaft connected to said engine, an output shaft connected to said vehicle-wheel drive member, a first rotor having a first control coil, a stator having a second control coil, and a second rotor having a first member for generating magnetic field interlinking said first control coil and a second member for generating magnetic field interlinking said second control coil;
• means for detecting rotation of said first rotor and said second rotor;
• means, connected to said first and second control coils, for supplying said first and second control coils with electric power according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque;
• and
• means for supplying coolant to inside of said rotary electric machine.

A system for driving a vehicle having a battery, an engine and a vehicle-wheel drive member comprising:

• a housing;
• a rotary electric machine, disposed in said housing and including an input shaft connected to said engine, an output shaft connected to said vehicle-wheel drive member, a first rotor connected to said input shaft and having a first control coil, a stator having a second control coil, and a second rotor connected to said output shaft and having a first member for generating magnetic field interlinking said first control coil and a second member for generating magnetic field interlinking said second control coil;
• means, disposed in said housing, for detecting rotation of said first rotor and said second rotor;
• means, connected to said first and second control coils, for supplying said first and second control coils with electric power according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque;
• and
• means for supplying coolant to inside of said rotary electric machine;
• wherein
• said first rotor, stator and second rotor are disposed coaxially with one another.

A system for driving a vehicle having a battery, an engine and a vehicle-wheel drive member comprising:

• a housing;
• a rotary electric machine disposed in said housing and including a first rotor having an input shaft connectable to said engine, a rotor core carried by said input shaft and a first control coil disposed in said core, a stator having a stator core and a second control coil disposed in said stator core and a second rotor having an output shaft connectable to said vehicle-wheel drive member, a rotary yoke carried by said output shaft, a plurality of first permanent magnets disposed on a side of said first control coil and a plurality of second permanent magnets disposed on a side of said second control coil;
• means, disposed in said housing, for detecting rotation of said first rotor and said second rotor;
• means, connected to said first and second control coils, for supplying said first and second control coils with electric power according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque;
• and
• means for supplying coolant to inside of said rotary electric machine.

A system for driving a vehicle having a battery, an engine and a vehicle-wheel drive member comprising:

• a housing;
• a rotary electric machine disposed in said housing and including a first rotor having an input shaft connectable to said engine, a rotor core carried by said input shaft and a first control coil disposed in said core, a stator having a stator core and a second control coil disposed in said stator core and a second rotor having an output shaft connectable to said vehicle-wheel drive member, a rotary yoke carried by said output shaft, a plurality of first permanent magnets disposed on a side of said first control coil and a plurality of second permanent magnets disposed on a side of said second control coil;
• means, disposed in said housing, for detecting rotation of said first rotor and said second rotor;
• and
• means, connected to said first and second control coils, for supplying said first and second control coils with electric power according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque;
• wherein
• said means for supplying electric power comprises a power supply section disposed between said input shaft and housing,
• said power supply section is composed of a plurality of brushes disposed longitudinally around said input shaft, insulating members disposed respectively between said brushes and fixed to said housing and slip rings fixed to said input shaft to be in contact with said brushes, and
• said insulating members and said brushes are disposed in a heat dissipating passage connected to said housing.

A system for driving a vehicle having a battery, an engine and a vehicle-wheel drive member comprising:

• a housing;
• a rotary electric machine disposed in said housing and including a first rotor having an input shaft connectable to said engine, a rotor core carried by said input shaft and a first control coil disposed in said core, a stator having a stator core and a second control coil disposed in said stator core and a second rotor having an output shaft connectable to said vehicle-wheel drive member, a rotary yoke carried by said output shaft, a plurality of first permanent magnets disposed on a side of said first control coil and a plurality of second permanent magnets disposed on a side of said second control coil;
• means, disposed in said housing, for detecting rotation of said first rotor and said second rotor;
• and
• means, connected to said first and second control coils, for supplying said first and second control coils with electric power according to said rotation of said first and second rotors to convert rotational speed and torque of said engine and drive said vehicle drive member at a set rotational speed with a set torque;
• wherein
• said means for supplying said first and second control coils with electric power comprises
• a set-torque-signal generating section for generating a set torque signal according to a vehicle condition,
• an input-torque detecting section for calculating an input torque of said second rotor, and
• a compensation torque signal generating section for generating a compensation-torque signal according to said set torque signal and said input torque detected by said input-torque detecting section.