Power assembly and electric automobile

Abstract

The invention provides a power assembly and an electric automobile. The power assembly comprises a shell, a motor stator, a rotor shaft, an input gear, a transmission set, a differential assembly and an output flange, the motor stator and the rotor shaft arranged in the shell, two axial ends of the rotor shaft are a speed reducer end and a motor end respectively, the input gear sleeve the outer surface of the speed reducer end, the transmission set is meshed with the input gear, the differential assembly is meshed with the transmission set, and the output flange is connected with the differential assembly. According to the power assembly, a transition connecting structure between the motor and a speed reducer is canceled, design space of the assembly is saved, the power assembly is modularly designed, arrangement of a forward engine room of a platform is facilitated, a transition connecting structure between the motor and a speed reducer shell is removed, a connecting structure of an inner spline and an outer spline is removed, a link generating noise is decreased, NVH (noise vibration and harshness) performances of an overall vehicle are improved, matching between the inner spline and the outer spline is simplified, number of inner bearings is decreased, system efficiency is improved, and the power performance and the economic performance of the overall vehicle are improved.

Description

technical field [0001] The invention relates to the field of electric vehicle manufacturing, in particular to a power assembly and an electric vehicle. Background technique [0002] With the rapid advancement of science and technology, people's pursuit of quality of life is getting higher and higher. Cars have become an indispensable means of transportation for people's daily travel. People's requirements for the comfort, safety, economy and environmental protection of cars are also increasing. increasingly picky. [0003] As the leading force of new energy vehicles, electric vehicles have led the future development direction of automobiles, and electric vehicles have gradually entered people's daily life. [0004] In order to meet the performance requirements of pure electric vehicles for lightweight structure, vehicle comfort, NVH, etc., the demand for integrated structure design of electric drive assembly is getting higher and higher. [0005] In the prior art, a transi...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the technical problems that the transitional connection structure between the motor and the reducer in the prior art is not conducive to improving the NVH performance, system efficiency, vehicle dynamics and economic performance of the vehicle, the present invention provides a powertrain and electric car

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