Electric vehicle and dual-motor rotation speed and torque coupling power device thereof

Abstract

The invention relates to an electric vehicle and a dual-motor rotation speed and torque coupling power device of the electric vehicle. The dual-motor rotation speed and torque coupling power device comprises a main drive motor and an auxiliary motor which are coaxially arranged front and back. A main drive stator can rotate circumferentially around the center axis of the main drive stator. The auxiliary motor comprises an auxiliary stator and an auxiliary rotor. The power device further comprises a brake used for braking the main drive stator. A first clutch structure is arranged between the output end of the auxiliary rotor and the input end of a main drive rotor. A second clutch structure is arranged between the output end of the auxiliary rotor and the main drive stator. No transmissionstructure or speed reduction ratio change structure needs to be additionally arranged, rotation speed coupling and torque coupling of the two motors can be achieved only in the way that the stator ofthe main drive motor is arranged in a floating mode, and the power device is relatively compact and simple in structure, easy to achieve and low in space occupancy.

Description

technical field [0001] The invention relates to an electric vehicle and a dual-motor rotational speed and torque coupling power device thereof. Background technique [0002] In recent years, the world's energy shortage and environmental pollution have become more and more serious. Pure electric vehicles have become the main direction of future automobile development due to their advantages of low energy consumption and zero emissions. Pure electric vehicles are vehicles driven by a single motor or multiple motors. However, most vehicles are driven by a single motor. The single motor drive requires the motor to have a large speed and torque, and the high torque of the motor requires the shaft to be thicker. The mass of the motor is increased, and the single-motor drive cannot guarantee that the motor will always work in the high-efficiency area, so it is difficult for a single motor to exert the advantages of energy saving and environmental protection of pure electric vehicle...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an electric vehicle to solve the problem of high structural complexity and high space occupancy of the power plant in the prior art. The purpose of the present invention is also to provide a dual-motor rotating speed Torque coupled power unit

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