Power system assembly of electric vehicle

A technology for power systems and electric vehicles, applied in vehicle components, control devices, transportation and packaging, etc., can solve problems such as low motor work efficiency, achieve compact structure, simple structure layout, and reduce complexity and area.

Active Publication Date: 2014-04-02
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At the same time, there is the problem of low working efficiency of the motor

Method used

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  • Power system assembly of electric vehicle
  • Power system assembly of electric vehicle
  • Power system assembly of electric vehicle

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Embodiment

[0019] See figure 1 , A power system assembly of an electric vehicle includes a motor, a gearbox and a differential 17. The motor includes a stator 2, a rotor 1 and a rotor shaft 4. The rotor shaft 4 is a hollow shaft, the rotor 1 is located at one end of the rotor shaft 4, and the other end of the rotor shaft 4 is fixedly mounted with a sun gear 18. An intermediate shaft 9 is inserted into the rotor shaft 4 through a bearing. One end of the intermediate shaft 9 is mounted on the motor housing 3 through a bearing, and the other end is mounted on the gearbox housing 6 through a bearing. A planet carrier 10 is fixedly installed on the intermediate shaft 9 and a synchronizer 12 is also installed. Three planetary gears 7 are installed on the planet carrier 10. The three planetary gears 7 mesh with the sun gear 18 externally and mesh with the inner gear ring 8 at the same time. The inner gear ring 8 is fixedly installed in the gearbox housing 6. The intermediate shaft 9 between th...

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Abstract

The invention relates to a power system assembly of an electric vehicle. The power system assembly comprises a motor, a gearbox and a differential mechanism, wherein the motor and a transmission are integrally designed, and the transmission comprises a planet wheel mechanism and a duplex gear mechanism. The power system assembly disclosed by the invention effectively reduces the complexities and areas of a motor shell and a transmission shell, and reduces the axial size of the power assembly; the power system assembly is compact in structure, small in size and light in weight, and is consistent with a light weight principle of automobile. According to the power system assembly, a rotor shaft of the motor is directly connected to a central gear of the planet wheel mechanism in the transmission, so as to avoid coaxial tolerance caused by a motor output shaft and a transmission input shaft which are in matched installation, thereby eliminating the subsequent mechanical vibration and relieving the mechanical connection and noise. On the other hand, compared with an existing electric vehicle, the power system assembly which is in two-gear transmission ensures that the motor can work in an efficient area for a long time, thus prolonging the driving range of the vehicle.

Description

Technical field [0001] The invention belongs to the technical field of electric driving of electric vehicles, and specifically relates to a power system assembly of an electric vehicle. Background technique [0002] In recent years, my country's automotive motors have made significant progress. In terms of vehicle motor design, structure integration design technology is adopted to realize the highly integrated design and application of motor and transmission in mechanical, electromagnetic and thermal. The integration and integration trend of electric drive systems is more obvious. At present, in order to meet the motor loading requirements for electric vehicles on the market, most manufacturers assemble the motor and transmission on the body in the form of two independent parts. This installation method is through the external spline of the motor output shaft and the transmission It is realized by matching the splines in the input shaft. However, this will not only increase me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/12B60K17/16
Inventor 陈奇黄守武张琰赵韩黄康何李婷晏伟清
Owner HEFEI UNIV OF TECH
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