Electric vehicles and their integrated powertrain

A powertrain and housing technology, applied in the direction of electric powerplants, powerplants, vehicle parts, etc., can solve the problem that the integrated powertrain cannot take into account cost and reliability, achieve high reliability, reduce the number of bearings, The effect of simplifying the structure

Pending Publication Date: 2018-12-11
ZHUZHOU GEAR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an integrated powertrain and electric vehicle with lower cost and higher reliability in view of the problem that the existing integrated powertrain cannot take into account both cost and reliability.

Method used

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  • Electric vehicles and their integrated powertrain
  • Electric vehicles and their integrated powertrain

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Embodiment Construction

[0022] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0023] It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes ...

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Abstract

The invention relates to an electric vehicle and an integrated powertrain thereof, wherein an end of a reducer input shaft remote from an input bearing is not mounted on an inner wall of a reducer chamber through a bearing, so that the number of bearings can be reduced relative to the powertrain in the prior art, thereby simplifying a structure and reducing a cost. In addition, one end of the reducer input shaft extends into the motor cavity and is splined with the motor output shaft. In one aspect, since the second output bearing is proximate to the reducer input shaft, the second output bearing may provide support to the reducer input shaft while supporting the motor output shaft. On the other hand, since the motor output shaft and the reducer input shaft are splined to transmit torque,and the splined connection has a strong radial limiting effect, the motor output shaft and the reducer input shaft can also support each other. Therefore, reliability of the transmission process is not affected. Accordingly, the electric vehicle and its integrated powertrain not only reduce the cost, but also take into account the higher reliability.

Description

technical field [0001] The invention relates to the technical field of new energy vehicles, in particular to an electric vehicle and its integrated power assembly. Background technique [0002] In the traditional vehicle drive system, the motor, reducer, and controller all exist in the form of a separate box, so it is difficult to meet the current demand for compact and lightweight electric vehicles. Therefore, the integrated powertrain will be the development trend of electric vehicle drive system. Integrated powertrain refers to the integration of drive motor and reducer (or controller) into one housing. Wherein, the two ends of the output shaft of the drive motor are respectively provided with bearings, and the two ends of the input shaft of the reducer are also respectively provided with bearings. [0003] At present, when designing an integrated powertrain, methods such as reducing the number of bearings to simplify the system structure are often used to achieve the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/00B60K17/06
CPCB60K1/00B60K17/06
Inventor 沈旺刘祥环刘平曹保平孟繁东胡三保蔡央华磊熊亮
Owner ZHUZHOU GEAR CO LTD
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