Permanent magnet synchronous motor for extended range electric automobile

Abstract

The invention discloses a permanent magnet synchronous motor for an extended range electric automobile. The permanent magnet synchronous motor comprises a casing and an end cover connected at one end of the casing. The permanent magnet synchronous motor is characterized in that a stator, an inner rotor and an outer rotor are arranged in the casing, wherein the inner rotor is arranged in an inner cavity of the stator and the outer rotor is sleeved outside the stator to form an inner rotor motor and an outer rotor motor; and the inner rotor motor and the outer rotor motor share a stator and are respectively radial magnetic flux motors. According to the permanent magnet synchronous motor disclosed by the invention, the inner rotor motor and the outer rotor motor share one stator and one set of motor casing, the inner rotor motor is connected with an engine and the outer rotor motor is connected with a transmission, so that the permanent magnet synchronous motor has the advantages of compact structure, smaller size and low cost. Under the condition that SOC (State of Charge) of a battery is enough, a motor controller HCU (Hybrid Control Unit) is used for controlling the battery to supply power to an outer layer winding and the outer rotor motor is used for driving an entire automobile to electrically run. When the SOC of the battery is not enough, an ECU (Electric Control Unit) is used for controlling the engine to operate and drive the inner rotor motor to generate power and extend range.

Description

technical field [0001] The invention belongs to the power assembly of an electric vehicle, in particular to a permanent magnet synchronous motor for an extended-range electric vehicle. Background technique [0002] At present, most hybrid vehicles on the market use a dual-motor model, one motor is used as a drive, and the other is used as a power generator to extend the range, which undoubtedly increases the cost of the vehicle and takes up a lot of space, which is not conducive to the small size change; [0003] The other mode uses a single motor, but the power coupling structure is complicated, the control is difficult, and the assembly process is complicated, which is not conducive to mass production of the whole vehicle. Contents of the invention [0004] The purpose of the present invention is to provide a permanent magnet synchronous motor for an extended-range electric vehicle, which has a compact structure, a small volume and low cost. [0005] A permanent magnet...

AI Technical Summary

Problems solved by technology

[0002] At present, most hybrid vehicles on the market use a dual-motor model, one motor is used as a drive, and the other is used as a power generator to extend the range, which undoubtedly increases the cost of the vehicle and takes up a lot of space, which is not conducive to the small size change;

[0003] The other mode uses a single motor, but the power coupling structure is complicated, the control is difficult, and the assembly process is complicated, which is not conducive to the mass production of the whole vehicle

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