Electric motor with dual-rotor driving wheel

Abstract

The invention discloses an electric motor with a dual-rotor driving wheel, which comprises an electric motor shaft, a hub shell, an inner rotor and a planet reducing mechanism, wherein the hub shell is fixed on the electric motor shaft through a bearing and is the outer rotor of the electric motor, a sun wheel of the planet reducing mechanism and the inner rotor are fixedly connected, an outer gear is fixedly connected with the outer rotor, and a planet carrier is connected with the electric motor shaft through a clutch. In the planet reducing mechanism, since the planet carrier is fixedly connected to the electric motor shaft, the sun wheel and the outer gear respectively rotate to opposite directions, the electric motor has no stator, thus the structure is novel, the stator in the hub shell and an electric motor shell in the traditional high-speed brushed electric motor are saved, and the invention has the advantages that the size is small and the weight is light; since the planet reducing mechanism is arranged, the overload capacity is strong, the reversing performance is good, the efficient area is wide, and the climbing performance is good.

Description

technical field [0001] The invention belongs to the field of electric vehicles and relates to a double-rotor driving wheel motor used in light electric vehicles. Background technique [0002] At present, most electric vehicles in China are driven by in-wheel motors. Existing in-wheel motors are mainly divided into high-speed motors and low-speed motors, as well as brushed motors and brushless motors. The low-speed motor is an external rotor motor, the stator is inside, the rotor is outside, and the rotor and hub are integrated into one, with a simple structure. But there is no speed change mechanism, and the low-speed performance is poor. The cost of the brushed motor is low but the weight is large, the working current is large, and the climbing performance is poor; the structure of the brushless motor is simple but the reliability is poor. The hub and the motor of the high-speed brushed motor are two parts. The motor is installed in the hub and drives the hub to run thro...

AI Technical Summary

Problems solved by technology

But there is no speed change mechanism, low speed performance is poor

The cost of the brushed motor is lower but the weight is large, the working current is large, and the climbing performance is poor; the structure of the brushless motor is simple but the reliability is poor

The hub and the motor of the high-speed brushed motor are two parts. The motor is installed in the hub, and the hub is driven to run through the planetary gear reduction system, so its climbing performance is good, but the processing is difficult.

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