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Automatic transmission device for electric vehicle

A technology of automatic transmission device and electric vehicle, applied in the field of automobile transmission, can solve the problems of high manufacturing difficulty, high use cost, complex hydraulic control structure, etc., and achieve the effects of compact structure, high power transmission efficiency and light weight

Active Publication Date: 2020-06-05
FUJIAN ZHONGQING AUTOMOBILE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The technical problem to be solved by the present invention is: the hydraulic control structure in the multi-gear gearbox of the existing electric vehicle is relatively complicated, the manufacture is difficult, and the use cost is high

Method used

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  • Automatic transmission device for electric vehicle
  • Automatic transmission device for electric vehicle

Examples

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Embodiment 1

[0054] An automatic transmission device for an electric vehicle, comprising a planetary gear mechanism 1, an output shaft 2, a first clutch 3, a second clutch 4 and a shift mechanism 5 arranged in a housing 6;

[0055] The output shaft 2 is driven by a motor 7 through a planetary gear mechanism 1;

[0056] The shift mechanism 5 controls the linkage switching between the first clutch 3 and the second clutch 4, and the linkage switching between the first clutch 3 and the second clutch 4 controls the locking and unlocking of the planetary gear mechanism 1 so as to realize two switch between gears;

[0057] The planetary gear mechanism 1 includes a first sun gear 11, a second sun gear 12, a planetary gear and a planet carrier 15. The first sun gear 11 is sheathed on the output shaft 2 and is rotationally connected with the output shaft 2. The first sun gear 11 is driven by the motor 7, and one end of the first sun gear 11 and the planetary gear meshes with each other, and the oth...

Embodiment 2

[0066] An automatic transmission device for an electric vehicle, comprising a planetary gear mechanism 1, an output shaft 2, a first clutch 3, a second clutch 4 and a shift mechanism 5 arranged in a housing 6;

[0067] The output shaft 2 is driven by a motor 7 through a planetary gear mechanism 1;

[0068] The shift mechanism 5 controls the linkage switching between the first clutch 3 and the second clutch 4, and the linkage switching between the first clutch 3 and the second clutch 4 controls the locking and unlocking of the planetary gear mechanism 1 so as to realize two switch between gears;

[0069] The planetary gear mechanism 1 includes a first sun gear 11, a second sun gear 12, a planetary gear and a planet carrier 15. The first sun gear 11 is sheathed on the output shaft 2 and is rotationally connected with the output shaft 2. The first sun gear 11 is driven by the motor 7, and one end of the first sun gear 11 and the planetary gear meshes with each other, and the oth...

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Abstract

The invention relates to the technical field of automobile transmission, in particular to an automatic transmission device for an electric vehicle. The automatic transmission device comprises a planetary gear mechanism, an output shaft, a first clutch, a second clutch and a gear shifting mechanism which are arranged in the shell. According to the automatic transmission device for the electric vehicle, linkage switching between the two clutches can be realized by manipulating one gear shifting mechanism, the requirement on the operation precision of the gear shifting mechanism is low, and meanwhile, a pressure plate and a lifting plate have no rotation speed difference, so that the use of a release bearing is avoided, and also the complex mechanism of the hydraulic gear shift is avoided; the manufacturing is simple, the cost is low, the reliability is high, and the like; and each planetary gear mechanism is simultaneously locked in the second gear, so that no gear meshing efficiency loss is achieved, and the overall power transmission efficiency is high; the automatic transmission device has high bearing capacity; and the weight is light, the structure is compact, the number of parts is small, and the maintenance is simple.

Description

technical field [0001] The invention relates to the technical field of automobile transmission, in particular to an automatic transmission device for an electric automobile. Background technique [0002] With the development of the new energy vehicle industry, electric vehicles need to adapt to more road conditions and have a longer cruising range. At present, most of the transmission parts of electric vehicles are only equipped with fixed speed ratio gearboxes. The fixed speed ratio gearboxes put forward high requirements for the design of the drive motor. High torque, high efficiency under high-speed working conditions, high quietness and so on. This is difficult to meet simultaneously under the existing actual motor technology conditions, and it must be matched with a multi-speed gearbox to meet the needs of electric vehicles. [0003] Compared with the fixed speed ratio gearbox, the multi-speed gearbox has less power output loss and can greatly improve the power output...

Claims

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Application Information

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IPC IPC(8): F16H3/46F16H61/30F16H61/32F16H61/36
CPCF16H3/46F16H61/30F16H61/32F16H61/36F16H2061/326
Inventor 陈帆蔡有建
Owner FUJIAN ZHONGQING AUTOMOBILE TECH CO LTD
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