Electric vehicle hub motor double clutch planet gear-shifting mechanism

Abstract

The invention discloses an electric vehicle hub motor double clutch planet gear-shifting mechanism. A motor rotor consists of a motor inner shell, a magnetic steel piece, a first inner end cover and a second inner end cover; the motor rotor, a stator and a motor shaft form a motor; a first planet speed-reducing structure consists of a first sun gear, a first planet gear, a planet carrier and a planet shaft; a second planet speed-reducing structure consists of a planet shaft, a second planet gear and a second sun gear; and a controllable bidirectional clutch consists of a retainer, a first spring, a rolling body, a push rod, a spring clamp ring, a second spring, a pin roller and a planet carrier. The hub can obtain different rotating speeds through the controllable bidirectional clutch under the condition that the input rotating speed is invariable, so that the continuation capacity and climbing capacity of the electric vehicle are effectively improved; and moreover, the gear can be prevented from being damaged, and the gear-shifting stability is ensured, so that the whole vehicle does not shake during gear shifting, and the driving comfort is greatly improved.

Description

technical field [0001] The invention belongs to the technical field of electric vehicles, and in particular relates to a hub motor double-clutch planetary shifting mechanism on an electric vehicle. Background technique [0002] At present, electric vehicle motors produced on the market rely on electronic controllers to achieve stepless speed change. Its speed can be from zero to rated value. Compared with engine throttle speed change, the speed change of the motor is more stable. But the method of using the electronic controller to change the speed has a big disadvantage: when climbing and loading, the motor will increase the torque through the continuous increase of the current when it is working, so as to change the climbing ability. Therefore, the larger the torque, the larger the current, the smaller the output torque of the motor, the larger the power consumption, and the greatly shortened continuous driving ability. [0003] Some manufacturers integrate the planetary ...

AI Technical Summary

Problems solved by technology

However, the method of using an electronic controller to change speed has a great disadvantage: when climbing and loading, the motor will increase the torque through the continuous increase of current when it is working, so as to change the climbing ability

When the speed is fast or in the case of climbing or loading, it is easy to cause the gear to be damaged, and the stability of the shift is poor, and the whole vehicle is prone to shaking when shifting, which will affect the comfort of driving

At the same time, the existing in-wheel motor shifting mechanism has complex structure, difficult assembly, large volume, and high production cost, which is not conducive to large-scale promotion and use.

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