Wheel hub motor with multiple inner motors connected in parallel

Abstract

The invention discloses a wheel hub motor with multiple inner motors connected in parallel, and the wheel hub motor can be directly connected with wheels of an electric car. The wheel hub motor with the multiple inner motors connected in parallel comprises a motor shaft and an outer rotor supported on the motor shaft, wherein the multiple inner motors are fixedly arranged inside the outer rotor; rotor shafts of the inner motors are distributed in the circumference of the outer rotor at equal intervals; the rotor shafts of all the inner motors are parallel with the motor shaft; the rotor shaft of each inner motor is fixedly provided with a gear; all the gears are meshed with an inner gear ring; the inner gear ring is fixedly connected with the outer rotor. The mode that the multiple inner motors are connected in parallel is adopted, a gear reducing mechanism is matched at the same time, when each inner motor works, the gear reducing mechanism drives the outer rotor to rotate, the rotation speed of the inner motors can be reduced, and the torque of the wheel hub motor is improved; meanwhile, the number of the inner motors which work simultaneously is controllable, so that the wheel hub motor meets the requirement of the electric car under different working conditions, and the dynamic property and the economical efficiency of the electric car are improved.

Description

technical field [0001] The invention relates to a motor, in particular to a hub motor with an outer rotor that can be directly connected to a wheel of an electric vehicle. Background technique [0002] With the development of electric vehicle technology, the independent drive technology of electric wheels has been applied, and the hub motor is one of the core components of the independent drive technology of electric wheels. Most of the existing in-wheel motors have stator windings on the motor shaft, and the outer rotor is driven to rotate by energizing and generating magnetism. The speed and torque of the motor are greatly limited and cannot meet the needs of electric vehicles under various working conditions. need. At present, there are also motors connected in parallel with multiple motors, such as the motor disclosed in the patent document named "Planetary Motor" with Chinese Patent No. ZL200820189167.7. This motor adopts an inner rotor structure, and each inner motor ...

AI Technical Summary

Problems solved by technology

Most of the existing in-wheel motors have stator windings on the motor shaft, and the outer rotor is driven to rotate by energizing and generating magnetism. The speed and torque of the motor are greatly limited and cannot meet the needs of electric vehicles under various working conditions. need

At present, there are also motors connected in parallel with multiple motors, such as the motor disclosed in the patent document named "Planetary Motor" with Chinese Patent No. ZL200820189167.7. This motor adopts an inner rotor structure, and each inner motor body is also rotating , so the inertia is too large, and the reliability of the connection between the carbon brush and the commutator is poor

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