Electromagnetically-controlled three-gear automatic shifting speed reduction box for electric vehicle

Abstract

The invention relates to an electromagnetically-controlled three-gear automatic shifting speed reduction box for an electric vehicle. A working principle is in a way that power switching is achieved by electromagnet control and by combining calculation of a rotational speed, a torque and an accelerator signal, a first gear comprises an electromagnetic driver, a locking mechanism, a sun gear, a motor rotor, a planet carrier, a motor stator, a planet wheel, a gear ring and a motor output shaft, a second gear comprises the sun gear, the motor rotor, the gear ring, the planet carrier, the motor stator, the planet wheel, the motor output shaft, the electromagnetic driver and the locking mechanism, and a third gear comprises the planet carrier, the motor stator, the coil, the motor rotor, the sun gear, the motor output shaft, the planet wheel, the electromagnetic driver and the locking mechanism. The electromagnetically-controlled three-gear automatic shifting speed reduction box for the electric vehicle employs electromagnetic control and multi-gear selection, the requirements of maximum gradability and highest speed of the vehicle can be met, the electromagnetically-controlled three-gear automatic shifting speed reduction box is simple in structure and small in power loss and is difficult to damage, energy is saved, and uninterruptible power, no-impact flexibility and automatic shifting are achieved.

Description

technical field [0001] The invention relates to the field of electric vehicles, in particular to an electromagnetically controlled three-speed automatic shift gearbox for electric vehicles. Background technique [0002] Electric Vehicle Development Now, people have never been more concerned about the ability of electric bicycles to climb hills than today. What's more, the climbing ability is even regarded as the most important index to measure the performance of electric vehicles. The vehicle manufacturers regard the strong climbing ability as a selling point, and consumers regard it as the basis for purchasing electric bicycles. In order to enhance the climbing ability of the existing motor, the cruising range is shortened to only 1 / 3-1 / 5, and the serious consequences of shortening the life of the battery motor by 2 / 3. And the climbing performance of the existing electric vehicle electric motor is extremely poor, not suitable for consumers in mountainous or hilly areas, on...

AI Technical Summary

Problems solved by technology

The electromagnet shifts gears. During the shifting process, it is hard-connected, and there will be a phenomenon of tooth hitting and shifting impact.

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