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Planet-gear differential device and hybrid power continuously variable transmission system and vehicle

A planetary gear differential and planetary gear technology, which is applied in the field of differential devices, can solve the problems of large axial size, difficult processing, technical precision requirements and high cost, and meet the requirements of reducing the strength of the ring gear, reducing the axial size, Facilitate the effect of processing and manufacturing

Inactive Publication Date: 2013-09-04
GREAT WALL MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this structure, since the ring gear is responsible for the power output, the strength of the ring gear is high. In addition, due to the double planetary row structure, its axial dimension is relatively large, which is not conducive to the layout of front-wheel drive hybrid vehicles. Moreover, the technical precision requirements and cost are high, and the processing is difficult

Method used

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  • Planet-gear differential device and hybrid power continuously variable transmission system and vehicle
  • Planet-gear differential device and hybrid power continuously variable transmission system and vehicle

Examples

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Embodiment 1

[0019] This embodiment relates to a planetary gear differential device, which consists of figure 1 As shown, it includes a ring gear 1, which is connected to the transmission shaft 4 that transmits the driving force from the driving source as described below. In this embodiment, the middle part of the ring gear 1 is fixedly connected with a connecting plate 37 along its radial direction, and the transmission The shaft is fixed directly at the center of the connecting plate 37; the planet carrier 2 is coaxially fixed with the ring gear 1 and forms a support for the differential mechanism 3 inside it.

[0020] The differential mechanism 3 includes a first sun gear 31 and a second sun gear 32 coaxial with the ring gear 1 , and the first sun gear 31 and the second sun gear 32 are arranged at an axial distance between them. The differential mechanism 3 further includes a first planetary gear 33 meshed with the first sun gear 31 and a second planetary gear 34 meshed with the second ...

Embodiment 2

[0024] This embodiment relates to a hybrid continuously variable transmission system, which is a specific application of the first embodiment of the planetary gear differential device. Depend on figure 2 As shown, it includes an engine 5 as a driving source, a generator 6, a planetary gear differential device, a power battery 7, an electric motor 8, an inverter 9 connected to the generator 6, the power battery 7 and the motor 8, and an inverter 9 connected to the motor 8. The final reduction gear set 10 connected to the power output end. The final reduction gear set 10 includes a driving gear 101 connected to the power output shaft of the engine 8 and a driven gear 102 meshed with the driving gear 101 . Wherein, the planetary gear differential device has the structure of the first embodiment.

[0025] The first sun gear 31 is fixedly connected with the rotor of the generator 6 coaxially, as in this embodiment, the first sun gear 31 is fixedly provided with a shaft sleeve 11,...

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Abstract

The invention relates to a differential device for a vehicle, in particular to a planet-gear differential device. The differential device comprises a gear ring. A differential mechanism is arranged in a planet carrier and comprises a first sun gear, a second sun gear, a first planet gear and a second planet gear. The first sun gear and the second sun gear are coaxial with the gear ring and arranged at an interval, the first planet gear is fixed on a rotary shaft rotatably connected onto the planet carrier and is meshed with the first sun gear, and the second planet gear is fixed on a rotary shaft rotatably connected onto the planet carrier and is meshed with the first planet gear and the second sun gear simultaneously, and the first planet gear and the second planet gear are coaxially arranged. Meanwhile, the invention further relates to a hybrid power continuously variable transmission system with the planet-gear differential device and a vehicle with the system. By means of the design of the planet-gear differential device, power is transmitted, the axial size of the device is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to a differential device for a vehicle, in particular to a planetary gear differential device, and also relates to a hybrid continuously variable transmission system with the planetary gear differential device and a vehicle with the system. Background technique [0002] With the continuous improvement of society's requirements for energy conservation and environmental protection, major companies in the world have invested a lot of manpower and financial resources in the research and development of new energy vehicles. At present, various forms of hybrid electric vehicles have been launched. Among them, Toyota Prius, as the earliest and most successful hybrid electric vehicle, has developed to the third generation. Toyota's hybrid system is collectively called THS (and Toyoda hybrid system) hybrid Power system, the core of the THS hybrid power system is ECVT technology (electronically controlled continuously variable transmission t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60K17/16F16H48/06
Inventor 黄勇李明
Owner GREAT WALL MOTOR CO LTD