Electric automobile variable-speed transmission device

A variable-speed transmission and electric vehicle technology, applied to multi-ratio transmissions, transmissions, gear transmissions, etc., can solve the problems of inconvenient disassembly and maintenance, high cost, and complexity, and achieve the effect of simple and compact structure and saving space

Pending Publication Date: 2021-01-08
NANCHANG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on the automatic transmission of pure electric vehicles mainly includes single-clutch structure, double-clutch structure, planetary gear structure, and electronically controlled mechanical structure. The smoothness of the gear is not high, the disassembly and maintenance are inconvenient, and the cost is high. At present, the planetary gear structure technology is still being perfected, and the potential is great

Method used

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  • Electric automobile variable-speed transmission device
  • Electric automobile variable-speed transmission device
  • Electric automobile variable-speed transmission device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 2

[0048] refer to image 3 The difference between this embodiment and Embodiment 1 is that the left output shaft and the right output shaft of the planetary gear extend to the outside of the transmission housing 1, and the lock 25 is arranged on the left output shaft and the right output shaft of the planetary gear. At the end of the shaft, such arrangement can make the installation, disassembly and maintenance of the locking device 25 more convenient, and the action of the locking device 25 and the transmission inside the transmission housing 1 do not affect each other.

Embodiment 3

[0050] refer to Figure 4 The difference between the present embodiment and the second embodiment is that a chute 29 is provided symmetrically on the gear carrier 5, and a driving device 30 is fixedly connected in the chute 29, and the driving device 30 can be a push rod motor or an air cylinder. Among them, it is preferably a push rod motor, and the end of the beam 28 away from the planetary wheel 27 is fixedly connected to the end of the output shaft of the push rod motor and is slidably connected in the chute 29, that is, the drive of the planetary wheel 27 on the beam 28 can be realized by the push rod motor The descending gear carrier 5 slides radially, thereby realizing the relative separation of the planetary gear 27 from the left side gear 10 and the right side gear 11, and finally realizing the purpose of shifting the car to neutral.

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Abstract

The invention discloses an electric automobile variable-speed transmission device. The electric automobile variable-speed transmission device comprises an input shaft, an output shaft and a transmission shell. An input transmission part, a planetary gear part and an output transmission part are sequentially arranged in the transmission shell. The input transmission part is fixedly connected with the planetary gear part. A second gear pair and a third gear pair are in meshing transmission between the two output ends of the planetary gear part and the output transmission part, and locking devices are arranged on two output end shafts of the planetary gear part. The output transmission part comprises a first output transmission part body and a second output transmission part body. A fourth gear pair is in meshing transmission between the first output transmission part body and the output shaft, and a fifth gear pair and a sixth gear pair are in meshing transmission between the second output transmission part body and the output shaft. And a first clutch and a second clutch are arranged on the first output transmission part body and the second output transmission part body correspondingly. The electric automobile variable-speed transmission device is compact and simple in structure and smooth in gear shifting, and the purpose of gear shifting and speed changing of electric automobiles can be easily and rapidly achieved.

Description

technical field [0001] The invention relates to the field of speed change of new energy vehicles, in particular to a speed change transmission device for electric vehicles. Background technique [0002] Pure electric vehicles are the main direction of my country's automobile development. As the main part of the transmission system of pure electric vehicles, the importance of transmission is self-evident. At present, the research on the automatic transmission of pure electric vehicles mainly includes single-clutch structure, double-clutch structure, planetary gear structure, and electronically controlled mechanical structure. The smoothness of the gear is not high, the disassembly and maintenance are inconvenient, and the cost is high. At present, the planetary gear structure technology is still being perfected and has great potential. Therefore, it is necessary to design a variable speed transmission device for electric vehicles to solve the problems in the prior art. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/44F16H57/10F16H57/08F16H57/00
CPCF16H3/006F16H3/44F16H57/0025F16H57/08F16H57/10F16H2003/008F16H2200/0021F16H2200/2005F16H2200/2038
Inventor 肖悦林谋有初长宝高伟甘志梅
Owner NANCHANG INST OF TECH
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