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Electric drive device

An electric drive and electric motor technology, applied in the direction of electric power device, electromechanical device, power device, etc., can solve the problems of unfavorable layout, occupying space, difficult layout of the main reducer, etc.

Inactive Publication Date: 2020-02-11
曾浩文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In some more compact applications, such as coaxial electric drives, the existence of the main reducer makes the arrangement difficult, and it is not conducive to the realization of a more compact arrangement due to the corresponding space occupied

Method used

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  • Electric drive device
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Embodiment Construction

[0017] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] Such as figure 1 As shown, the electric drive device 100 includes a motor 1; a transmission mechanism 2 includes a first planetary row 21, a second planetary row 22, a first brake 23, and a second brake 24; the first planetary row 21 is a simple planetary row, including The first sun gear 211, the first planet carrier 212 and the first ring gear 213; the second planet row 22 is a double-star internal and external meshing planet row, including the second sun gear 221, the second planet carrier 222 and the second ring gear 223. A sun gear 211 is connected with the motor 1 as the input end of ...

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Abstract

The invention provides an electric drive device. The device comprises a motor, and a transmission mechanism including a first planetary row, a second planetary row, a first brake, and a second brake.The first planetary row is a simple planetary row and comprises a first sun gear, a first planet carrier and a first gear ring. The second planet row is a double star internal and external meshing planet row and comprises a second sun gear, a second planet carrier and a second gear ring. The first sun gear is connected with the motor as the input end of the transmission mechanism. The first planetcarrier is fixedly connected with the second planet carrier and serves as the output end of the transmission mechanism. The first gear ring is fixedly connected with the second sun gear. The first brake is used to brake the second gear ring. The second brake is used to brake the first gear ring. According to the electric drive device provided by the invention, two gears with relatively large transmissions can be realized through the unique connection of two planetary rows and cooperation of two brakes; required power conversion is realized without separately arranging a main reducer; and theneed for the electric drive device in a more compact structure is met.

Description

[technical field] [0001] The invention relates to the technical field of vehicle drive, in particular to an electric drive device. [Background technique] [0002] Existing electric drive devices for new energy vehicles usually include a reduction mechanism or a speed change mechanism, a final drive and a differential. device to achieve the final deceleration. In some applications with a more compact structure, such as coaxial electric drive devices, the existence of the final reducer makes the arrangement difficult, and because it occupies a corresponding space, it is not conducive to achieving a more compact arrangement. [Content of the invention] [0003] In order to overcome the problems existing in the prior art, the present invention provides an electric driving device. [0004] The solution to the technical problem of the present invention is to provide an electric drive device, including: an electric motor; a transmission mechanism, including a first planetary row...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K7/116H02K7/10B60K1/02B60K17/08
CPCB60K1/02B60K17/08H02K7/10H02K7/116
Inventor 曾浩文
Owner 曾浩文