Electric machine driving device used on light electromobile

A motor-driven, electric vehicle technology, applied in the direction of electric power devices, power devices, wheel transmissions, etc., can solve problems such as poor climbing ability, short driving mileage, and large driving current on flat roads, and achieve high efficiency, Strong climbing ability and long driving range

Inactive Publication Date: 2007-02-07
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large number of coils and large internal resistance of this type of low-speed motor, the performance is very poor. The motor efficiency can only reach 70-75%, and the mechanical characteristic β value can only reach 12-15 (rpm / Nm). Limit, can no longer be raised
In actual use, it is characterized by poor climbing ability (small output torque) and short driving mileage (high driving current on flat roads), which has become a technical bottleneck in the development of electric motorcycles.

Method used

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  • Electric machine driving device used on light electromobile
  • Electric machine driving device used on light electromobile
  • Electric machine driving device used on light electromobile

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Embodiment Construction

[0012] The driving device of the light electric vehicle proposed by the present invention has two structures, wherein the first structure, such as figure 2 As shown, including motor 7, transmission system and casing 8. The motor is installed on the casing, and the transmission system is placed in the casing 8, and is connected to the wheel hub 1 of the electric vehicle wheel outside the casing. The transmission system includes a pinion 9, an intermediate gear 10, a bull gear 11 and an overrunning clutch 12, the pinion 9 is connected to the output shaft of the motor 7, the pinion 9 is linked with the bull gear 11 through the intermediate gear 10, and the bull gear 11 is connected through the overrunning clutch 12 It is connected with the drive shaft 13 of the electric vehicle.

[0013] The second structure of the present invention, such as image 3 Shown, comprise motor 7 and transmission system. Motor 7 is fixed on the outside of the wheel hub 1 of the electric vehicle tir...

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Abstract

A motor driver system for electric light vehicle features that its drive unit connected to the hub of wheel is composed of small gear fixed to the output mainshaft of motor, intermediate gear, big gear engaged with small gear via said intermediate gear, and overidding clutch between said big gear and drive shaft of wheels.

Description

technical field [0001] The patent of the present invention relates to a motor drive device for light electric vehicles, which is suitable for light electric vehicles above electric motorcycles (excluding electric bicycles), and belongs to the field of power devices of electromechanical products. Background technique [0002] At present, all domestic electric motorcycle motor drives are directly driven by low-speed motors, such as: low-speed brushless motor drives, low-speed brushed motor drives, and their typical structures are as follows figure 1 Shown, wherein 1 is wheel hub, and the external rotor 2 of motor is fixedly installed in wheel hub 1, and tire 4 rotates together with motor external rotor 2 and wheel hub 1, and 3 is motor stator, and its fixed shaft 5 is fixed on vehicle frame 6. Due to the large number of coils and large internal resistance of this type of low-speed motor, the performance is very poor. The motor efficiency can only reach 70-75%, and the mechanic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K7/00B62M11/04B60K1/00
Inventor 黄靖远黄华星权英华堵广智黄小晗沈世英姚维荣居秀琴杨桂民邹伯南
Owner TSINGHUA UNIV
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