Brushless disc type double-rotor motor

Abstract

The invention discloses a brushless disc type double-rotor motor. The motor comprises a motor shell, stators fixedly arranged at the inner sides of two axial ends of the motor shell, an outer rotor arranged in the motor shell and matched with the stators, an outer rotor output shaft rotatably connected with one end of the motor shell and fixedly connected with the outer rotor, an inner rotor arranged in the motor shell and matched with the stators and the outer rotor, an inner rotor output shaft rotatably connected with the other end of the motor shell and fixedly connected with the inner rotor, and an inverter electrically connected with the stator. The motor has the characteristics of a disc-type permanent magnet motor; the stators are fixed at the inner sides of the end covers at two ends; the permanent magnet inner rotor is fixed on the inner rotor output shaft to rotate together; the claw-pole rotor is located between the two stators and the inner rotor, an electrical angle of 90degrees is formed, the claw-pole rotor and the inner rotor are jointly fixed to the output shaft of the outer rotor to rotate together, coordinated work can be achieved only through one two-phase inverter, and brushless feeding and adjustment of the rotating speed / torque difference value between the two rotating shafts are achieved.

Description

technical field [0001] The invention relates to a double-rotor motor, in particular to a brushless disc-type double-rotor motor. Background technique [0002] Traditional motors generally consist of a stator and a rotor. Since the motor has only one rotor, it can only achieve single-speed single-axis output. In applications such as torpedo propulsion, electric vehicles, and wind power generation, the motor is required to have dual-axis output capabilities that provide two independent speeds, which cannot be achieved by traditional motors. [0003] In the existing dual-rotor motors, such as the dual-rotor hybrid compound permanent magnet motor disclosed in the application number 200510014393.2, there are brushes and slip rings, resulting in low efficiency and reliability. For example, the brushless dual-rotor motor disclosed in the application number 200610014350.9 realizes brushless and improves reliability. Because it adopts double-feed technology, the outer rotor is comp...

AI Technical Summary

Problems solved by technology

Since the motor has only one rotor, it can only achieve single-speed single-axis output

In applications such as torpedo propulsion, electric vehicles, and wind power generation, the motor is required to have a dual-axis output capability that provides two independent speeds, which cannot be achieved by traditional motors

[0003] In the existing dual-rotor motors, such as the dual-rotor hybrid compound permanent magnet motor disclosed in the application number 200510014393.2, there are brushes and slip rings, resulting in low efficiency and reliability

For example, the brushless dual-rotor motor disclosed in the application number 200610014350.9 realizes brushless and improves reliability. Because it adopts double-feed technology, the outer rotor is composed of windings, resulting in large copper loss. Manufacture or repair of outer rotor windings It is also very inconvenient, and its overall weight and volume are relatively large

Such as the application number is 200910179233.1 disclosed brushless feed double rotor motor has been improved and improved in terms of efficiency, maintenance, reliability, but because its three-phase stator winding, claw pole outer rotor, magnetic steel inner rotor are independent, so The utilization rate of the inner and outer rotors and the magnetic steel is only 2 / 3. In addition, the winding is inconvenient to embed, making it difficult to mass produce, and it is also inconvenient to repair and replace the intermediate phase winding.

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