Power assembly and electric vehicle with same

Abstract

The invention discloses a power assembly and an electric vehicle with the same. The power assembly comprises a speed reducer and a motor. The speed reducer comprises an input shaft assembly and an output shaft assembly, the output shaft assembly comprises an input shaft and an input shaft gear arranged on the input shaft in a sleeving mode, and the output shaft assembly comprises an output shaft and an output shaft gear arranged on the output shaft in a sleeving mode; a motor shaft of the motor and the input shaft are integrally formed to form an integrated shaft, and a motor shell of the motor and a speed reducer shell of the speed reducer are integrally formed to form a power assembly shell. Wherein the integrated shaft is provided with a first bearing, a third bearing and a second bearing, the first bearing and the third bearing are located at the two ends of the power assembly shell, the second bearing is located between the first bearing and the third bearing, the third bearing is fixed to the motor shell through a limiting structure, an input shaft gear is arranged between the first bearing and the second bearing, and the input shaft gear is in power connection with an output shaft gear. And the input shaft gear is selectively locked with the parking mechanism. Therefore, the mechanical transmission of the power assembly is more stable, the structural strength is higher, and the service life is longer.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a power assembly and an electric vehicle with the same. Background technique [0002] In related technologies, with the development of the electric vehicle industry, a powertrain integrating a motor and a reducer is a development trend, and more and more electric vehicles use a powertrain integrating a motor and a reducer. [0003] However, in the technology of integrating the motor and the reducer, the motor shaft and the input shaft of the reducer are integrally formed or arranged on the same axis. In this way, the force on the motor shaft and the input shaft changes during the working process, and it is necessary to optimize the force on the motor shaft and the bearings on the input shaft. [0004] At the same time, the reducer is generally equipped with a parking mechanism, which directly acts on the input shaft, output shaft or intermediate shaft, and then when the parking...

AI Technical Summary

Problems solved by technology

[0004] At the same time, the reducer is generally equipped with a parking mechanism, which directly acts on the input shaft, output shaft or intermediate shaft, and then when the parking mechanism performs a parking action, the parking ratchet and the parking pawl are locked to generate The force and impact directly act on the corresponding shaft, causing the corresponding shaft to fail or even break

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