Electric vehicle hub drive device

A hub-driven, electric vehicle technology, applied in the field of electric vehicles, can solve the problems of inconvenient installation and disassembly, complex structure, large volume, etc., and achieve the effects of easy disassembly and maintenance, stable output power, and simple and compact structure

Active Publication Date: 2017-07-07
CHONGQING UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] There are two driving forms of electric vehicles: motor direct drive and drive with wheel reducer. The biggest feature of the motor direct drive form is that the power, transmission and braking devices are integrated into the wheel hub, so the mechanical parts of the electric vehicle are greatly reduced. Simplification can also realize a variety of complex driving methods. At the same time, the wheel hub motor can realize differential steering similar to a tracked vehicle through different speeds or ev

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Embodiment Construction

[0020] figure 1 Is a schematic diagram of the structure of the present invention, figure 2 It is a schematic diagram of the structure of the present invention. As shown in the figure, an electric wheel hub drive device provided by the present invention includes a main support shaft, a built-in motor mounted on the main support shaft 1, and a planetary reduction mechanism. The planetary reduction mechanism includes a sun gear 2, a planetary gear set, The planet carrier and the center wheel fixed to the main support shaft 1 in the circumferential direction;

[0021] The sun gear 2 rotates and coats the main support shaft 1 and is used as the power input end of the planetary reduction mechanism to cooperate with the output end of the built-in motor. The planetary gear set includes a first planetary gear 3 and The center wheel 4 drives and cooperates with the second planetary gear 5. The planet carrier is fixedly connected with the axle of the first planetary gear 3 and the axle of...

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Abstract

The invention provides an electric vehicle hub drive device which comprises a main supporting shaft, a motor mounted in the main supporting shaft and a planetary reducing mechanism mounted in the main supporting shaft. The planetary reducing mechanism comprises a sun wheel, a planetary wheel set, planetary carriers and a central wheel circumferentially fixed to the main supporting shaft. The transmission ratios of a first planetary wheel and a second planetary wheel are different, so that wheel shafts of the first planetary wheel and the second planetary wheel rotate around the fixed planetary carriers to drive a hub to rotate, and by arranging the central wheel and the planetary wheel set, a motor direct drive device which is small in weight and simple and compact in structure can be conveniently achieved. The electric vehicle hub drive device is large in reduction ratio and transmission ration and good in drive performance and meets the use requirement that the mounting space of the electric vehicle hub drive device is narrow, and dismounting, mounting and repair are facilitated due to modularized design. The double planetary carriers simultaneously output torque, so that output power is stable.

Description

Technical field [0001] The invention relates to the field of electric vehicles, in particular to an electric wheel hub driving device. Background technique [0002] There are two driving forms of electric vehicles: direct motor drive and drive with wheel-side reducer. The biggest feature of the direct drive form of electric motor is that the power, transmission and braking devices are integrated into the hub, so the mechanical part of the electric vehicle is greatly improved. Simplified, it can also realize a variety of complex driving methods. At the same time, the in-wheel motor can realize differential steering similar to crawler vehicles through the different speeds of the left and right wheels or even reverse rotation, which greatly reduces the turning radius of the vehicle, which can almost be achieved under special circumstances. In-situ steering; while the electric wheel hub drive device in the prior art has a complex structure, large volume and heavy weight, and is not s...

Claims

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Application Information

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IPC IPC(8): B60K17/08B60K7/00
CPCB60K7/0007B60K17/08B60K2007/0092
Inventor 宋朝省陈曦朱才朝
Owner CHONGQING UNIV
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