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An electric drive planetary gear transmission

A planetary gear and transmission technology, applied in the field of planetary gear transmission mechanisms and planetary gear transmissions, can solve the problems of high requirements for driving motors, inability to balance economy and power, and achieve space-saving, compact structure and high transmission efficiency. Effect

Active Publication Date: 2017-08-29
BEIHANG UNIV
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AI Technical Summary

Problems solved by technology

Since the traditional fixed transmission ratio transmission has high requirements on the drive motor and cannot balance economy and power, the development of multi-speed automatic transmissions for electric vehicles has become an irresistible trend

Method used

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  • An electric drive planetary gear transmission
  • An electric drive planetary gear transmission

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Embodiment Construction

[0038] The following description is merely exemplary in nature and is in no way intended to limit the application or uses of the invention.

[0039] The present invention is a second-speed electric drive transmission with a planetary gear structure, which includes a housing 0; an input member is an input shaft IN; an output member is an output shaft OUT; a Simpson compound planetary row; a first interconnecting member 1; Two interconnecting members 2; third interconnecting member 4, fourth interconnecting member 3; first torque transmitting device B1; second torque transmitting device B2. The relationship between them is: taking the Simpson compound planetary row as the center, the left is the input member of the transmission system, the right is the output member of the transmission system, and the two torque transmission devices B1 and B2 are brakes, which are side by side close to the housing 0 , the above-mentioned components are located in the housing 0.

[0040] The hou...

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Abstract

An electrically-driven planetary transmission comprises a shell, an input component, an output component, a Simpson combined planetary line, two torque transmission devices and four interaction components, wherein the input component of a transmission system and the output component of the transmission system are arranged on the left and the right respectively with the Simpson combined planetary line as the center, the two torque transmission devices are brakes and are close to the shell, and all the components are located in the shell. The electrically-driven planetary transmission has the advantages of being simple and compact in structure, high in transmission efficiency, good in manufacturability, low in manufacturing cost, stable in gear shifting, good in maneuverability and the like; when used in an electric vehicle to carry out transmission, the electrically-driven planetary transmission can save space, and is high in transmission efficiency, accordant with working characteristics of a motor and better in transmission characteristic.

Description

technical field [0001] The invention provides an electrically driven planetary gear transmission, which relates to a two-speed planetary gear transmission mechanism and belongs to the technical field of electric vehicle automatic transmissions. Background technique [0002] With the increasing development of electric vehicles, the requirements for the performance of the transmission system are getting higher and higher. Since the traditional fixed ratio transmission has high requirements on the driving motor and cannot balance economy and power, the development of multi-speed automatic transmission for electric vehicles has become an irresistible trend. Because the planetary gear transmission mechanism has the characteristics of large transmission ratio, small size, large load capacity and stable operation, it is widely used in automatic transmissions. Therefore, the layout scheme design of the planetary row becomes the first prerequisite for the development of the automati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/46
CPCF16H3/46F16H2003/123F16H2200/0034F16H2200/2007F16H2200/2035
Inventor 刘艳芳孙汉乔刘钊韩笑徐向阳
Owner BEIHANG UNIV
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