Coreless, brushless and toothless big hub motor

Abstract

A coreless, brushless and toothless big hub motor is composed of a wheel rotor, a coreless stator and a loop controller. As a coreless toothed slot type stator coil replaces a core stator coil, the overall weight is reduced, the efficiency is increased, the structure is simple, and the cost is low. The coreless toothed slot type stator coil has no magnetic field resistance. The motor can slide in an idle state. An electric vehicle without power can be ridden as easily as a bicycle, and has an anti-charging flexible brake function. The toothed slot type stator coil is wound in the same way as the toothed slot type stator coil of the existing big-hub motor, and has the advantages of mature process and easy manufacture. The ratio of effective area of lines of magnetic force cut by 36 single coils is large. There is no core loss, and the line loss is small. The toothed slot type stator coil is formed by winding multiple strands of enameled wires in parallel. The process is simple, flexible, reliable, and high in rate of skeleton space utilization. The loop controller makes effective use of the remaining space inside the wheel rotor, and thus, the overall configuration structure is simplified.

Description

technical field [0001] The invention relates to a brushless and toothless large hub motor, in particular to an iron-coreless, brushless and toothless large hub motor. Background technique [0002] 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 in the market. But it is not perfect, and its disadvantages are: 1. The iron core stator coil of the brushless toothless large hub motor is very bulky, not suitable for light electric bicycles, and the core loss of the iron core stator coil directly affects the efficiency of the motor. 2. The magnetic field resistance of the iron core stator coil makes the motor have no sliding function when it is idling, so when the electric car is out of power, it is very heavy to ride manually, so some people install an overrunning clutch on this kind of motor. For example, the application number is: "20112...

AI Technical Summary

Problems solved by technology

But it is not perfect, and its disadvantages are: 1. The iron core stator coil of the brushless toothless large hub motor is very bulky, not suitable for light electric bicycles, and the iron core loss of the iron core stator coil directly affects the efficiency of the motor

2. The magnetic field resistance of the iron core stator coil makes the motor have no sliding function when it is idling, so when the electric car is out of power, it is very heavy to ride manually, so some people install an overrunning clutch on this kind of motor. For example, the application number is: "201120144725. The name of x" is: the patent of "a kind of non-reluctance electric wheel". Although it realizes the brushless and toothless large hub motor with sliding function, it has lost the flexible braking function of reverse charging, and its structure is complex and costly. high

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