Three-gear variable speed brushless gear-less big-hub motor

Abstract

Disclosed is a three-gear variable speed brushless gear-less big-hub motor. The three-gear variable speed brushless gear-less big-hub motor consists of a conical rotor, a conical stator, a semi-axis bridge frame, a speed changer, a variable speed rotary handle and an intelligent controller. The motor has a quite practical three-gear variable speed function; the three-gear variable speed refers to seamless-jointed unconditional gear shifting; when an electric vehicle is in normal running, a high-speed gear can be adopted to realize high-speed running; when the electric vehicle is climbing a slope, a low-speed gear is adopted to supply force; when the motor rotor and the stator are separated, a neutral gear is adopted, and magnetic field resistance of the motor is quite low in the neutral gear state; when the electric vehicle is out of power, the electric vehicle can be driven like a bicycle freely; the stator and the rotor of the motor are conical, and a uniform air gap between the stator and the rotor is changeable and adjustable between the minimum uniform air gap and the maximum uniform air gap; the uniform air gap of the motor can be quite small, so as to improve the motor efficiency; on one hand, the torsion of the variable speed rotary handle can overcome strong magnetic force between the conical rotor and the conical stator; on the other hand, the uniform air gap between the conical rotor and the conical stator can be changed; and a basic separating state between the rotor and the stator of the motor can be realized by separating for a quite short distance, so that the axial dimension of the motor is basically the same as that of the existing brushless gear-less big-hub motor.

Description

technical field [0001] The invention relates to an electric wheel hub motor, to be precise, a three-speed variable speed brushless and toothless large wheel hub [0002] motor. Background technique [0003] At present, in the whole country, most of the motors used by various electric vehicles on the road are brushless and toothless large hub motors. It has become the current mainstream products. But it is not perfect. First of all, there is magnetic resistance when the motor is idling, and there is no sliding function, so when the electric car is out of power, it is very heavy to ride manually. Secondly, the variable speed mode of the motor is realized by changing the number of turns of the armature coil, which makes the structure of the motor complicated and the efficiency reduced. There is a patent number: "2015100284760" and the name is: "manual fixed-rotation clutch multifunctional brushless toothless large hub motor". The same performance and function as the big hub...

AI Technical Summary

Problems solved by technology

The disadvantages are: 1. The hub motor has no speed change function

3. The structure stability of the guide connecting shaft of the hub motor is poor

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