Electric automobile driving apparatus
First Claim
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1. An electric automobile driving apparatus comprising:
- a) a main battery for outputting a DC voltage having a predetermined value;
b) an inverter for converting said DC voltage output from said main battery into the same number of alternating currents as a predetermined number of phases;
c) a motor provided with the same number of primary coils as said predetermined number of phases for converting said alternating currents which are output from said inverter into a magnetic field and a secondary coil disposed in close proximity to at least one of said primary coils so that said magnetic field generated by said primary coils induces a secondary voltage in aid secondary coil, the magnetic filed also inducing a torque on a rotor of said motor;
d) a control unit for driving said motor by alternating said alternating currents output from said inverter;
e) an auxiliary battery for supplying an auxiliary voltage to electric appliances installed in an electric automobile; and
f) a rectifier for converting said secondary voltage into a DC voltage having a predetermined value as a charging voltage, and charging said auxiliary battery with, and driving said electrical appliances by, said charging voltage.
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Abstract
An electric automobile driving apparatus installed in an electric automobile for driving the same. The driving force of the electric automobile is generated by a main battery as the rotating force of a motor. The motor is an AC motor and driven by an AC current output from the main battery and converted into a DC voltage by an inverter. Electric appliances installed in the automobile are driven by a DC voltage having a different value which is output from an auxiliary battery. The auxiliary battery is charged with the DC voltage obtained by rectifying the output from a secondary coil which is disposed in close proximity to a primary coil of the motor.
43 Citations
20 Claims
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1. An electric automobile driving apparatus comprising:
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a) a main battery for outputting a DC voltage having a predetermined value; b) an inverter for converting said DC voltage output from said main battery into the same number of alternating currents as a predetermined number of phases; c) a motor provided with the same number of primary coils as said predetermined number of phases for converting said alternating currents which are output from said inverter into a magnetic field and a secondary coil disposed in close proximity to at least one of said primary coils so that said magnetic field generated by said primary coils induces a secondary voltage in aid secondary coil, the magnetic filed also inducing a torque on a rotor of said motor; d) a control unit for driving said motor by alternating said alternating currents output from said inverter; e) an auxiliary battery for supplying an auxiliary voltage to electric appliances installed in an electric automobile; and f) a rectifier for converting said secondary voltage into a DC voltage having a predetermined value as a charging voltage, and charging said auxiliary battery with, and driving said electrical appliances by, said charging voltage. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electric automobile driving apparatus comprising:
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a) a main battery for outputting a DC voltage having a predetermined value; b) an inverter for converting said DC voltage output from said main battery into the same number of alternating currents as a predetermined number of phases; c) a motor provided with the same number of primary coils as said predetermined number of phases for converting said alternating currents which are output from said inverter into a magnetic field and a secondary coil disposed in close proximity to at least one of said primary coils so that said magnetic field generated by said primary coils induces a secondary voltage in said secondary coil, the magnetic field also inducing a torque on a rotor of said motor; d) an auxiliary battery for supplying an auxiliary voltage to electric appliances installed in an electric automobile; e) a control unit including a motor driving control means for alternating said alternating currents output from said inverter when said motor is required to be driven, and a motor stopping control means for stopping the alternation of said alternating currents output from said inverter when at least the suspension of said motor and the charging of said auxiliary battery are required, thereby inducing said secondary voltage in said secondary coil while maintaining said motor in a stopped state; and f) a rectifier for converting said secondary voltage into a DC voltage having a predetermined value as a charging voltage, and charging said auxiliary battery with, and driving said electrical appliances by, said charging voltage. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification