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Single-motor coaxial two-gear electric drive axle

A coaxial, single-motor technology, applied in the direction of electric power devices, power devices, control devices, etc., can solve the problems of inability to meet the speed change requirements, the built-in structure is not compact enough, and the comfort of shifting is poor, so as to improve the comfort of shifting , compact structure, and improved comfort

Pending Publication Date: 2022-01-14
江苏华永复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a common transmission mechanism, the drive axle is widely used in the field of mechanical and vehicle transmission. In order to adapt to the development of new energy vehicle technology, an electric drive axle driven by a drive motor has appeared. Most of the electric drive axles on the market are in one gear. The electric drive axle has high energy consumption and cannot meet the more complex transmission requirements. However, the two-speed electric drive axle on the market has a complex structure, the built-in structure is not compact enough, the cost is high, and the volume is large, so it is difficult to arrange in a limited installation space. And shifting comfort is poor

Method used

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  • Single-motor coaxial two-gear electric drive axle

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Embodiment 1

[0027] According to a preferred embodiment of the present invention, see figure 1 , provides a single-motor coaxial two-speed electric drive axle 400, which is characterized in that it includes:

[0028] The driving motor 401 has an output shaft, and the output shaft is a first hollow shaft;

[0029] The two-speed planetary reduction mechanism includes a reduction planetary row, a compound planetary row, a clutch 410 and a brake 411, and the reduction planetary row includes a first sun gear 402, a first planetary gear 403, a first planet carrier and a first ring gear 405, The first sun gear 402 is connected to the first hollow shaft, the first ring gear 405 is connected to the transaxle casing, and the composite planetary row includes the second sun gear 406, the second planetary gear 407, the second planet carrier, the second Three sun gears 408, the third planet gear 409 and the third planet carrier, the second sun gear 406 is larger than the third sun gear 408, the second ...

Embodiment approach

[0033] According to another preferred embodiment of the present invention, the second planetary gear 407 is meshed with the second sun gear 406, the third planetary gear 409 is meshed with the third sun gear 408, and the second planetary gear 407 and the third planetary gear 409 are arranged in parallel and connected to each other.

[0034] According to another preferred embodiment of the present invention, the differential is a compound planetary differential and further includes a fourth sun gear 412, a fourth planetary gear 413, a fifth sun gear 415 and a fifth planetary gear 414, the fourth The sun gear 412 is connected to the first output half shaft 418, the fifth sun gear 415 is connected to the second output half shaft 417, the fourth planetary gear 413 and the fifth planetary gear 414 are connected to the differential case and are externally meshed with each other. The fourth planetary gear 413 is engaged with the fourth sun gear 412 , and the fifth planetary gear 414 ...

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Abstract

The invention provides a single-motor coaxial two-gear electric drive axle which comprises a drive motor, a two-gear planetary speed reduction mechanism which comprises a speed reduction planetary row, a composite planetary row, a clutch and a brake; and a differential which comprises a differential shell, a first output half shaft and a second output half shaft, and the second output half shaft and the first output half shaft are coaxial and opposite in output direction. The speed reduction planet row and the composite planet row share the frame, and the structure is more compact; due to the structural design of the compound planet row, the transmission ratio between a high gear and a low gear is reduced, and the economical efficiency and the gear shifting comfort of the vehicle are improved after the two gears are arranged behind the speed reduction planet row.

Description

technical field [0001] The invention relates to the field of transmission of new energy vehicles, in particular to a single-motor coaxial two-speed electric drive axle. Background technique [0002] Electric-driven new energy vehicles are the world trend and future development direction. As a common transmission mechanism, the drive axle is widely used in the field of mechanical and vehicle transmission. In order to adapt to the development of new energy vehicle technology, an electric drive axle driven by a drive motor has appeared. Most of the electric drive axles on the market are in one gear. The electric drive axle has high energy consumption and cannot meet the more complex transmission requirements. However, the two-speed electric drive axle on the market has a complex structure, the built-in structure is not compact enough, the cost is high, and the volume is large, so it is difficult to arrange in a limited installation space. And shifting comfort is relatively poo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K1/00B60K17/04B60K17/16
CPCB60K1/00B60K17/046B60K17/165
Inventor 李吉元魏建飞李培浩王明成钱鹏虎石彦辉冯光军李晨
Owner 江苏华永复合材料有限公司
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