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Integrated two-speed variable speed electric drive assembly system and application method

An integrated and assembly technology, applied in the direction of electric power device, power device, control device, etc., can solve the problem of not taking into account the power and economy of pure electric vehicles, affecting battery life and endurance, and reducing the electric drive assembly system. Efficiency and other issues to achieve the effect of improving power and economy, light weight and compact structure

Inactive Publication Date: 2019-11-01
张建龙 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Most of the currently commercially available pure electric vehicles use a single-stage reduction mechanism. Although its structure is simple and its cost is low, it cannot take into account the power and economy of pure electric vehicles. system efficiency
Especially in the low-load conditions of starting and maximum speed, the motor is in the low-efficiency zone, which seriously affects the life and endurance of the battery
[0003] The patent with the publication number CN102152738A discloses a driving motor and transmission power integration of an electric vehicle. This invention reduces the mechanical noise and vibration by designing the motor front end cover and the transmission housing as a whole, and reduces the overall vehicle load. The difficulty of layout improves the reliability of the electric drive powertrain, but it is still essentially a gear reduction mechanism

Method used

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  • Integrated two-speed variable speed electric drive assembly system and application method
  • Integrated two-speed variable speed electric drive assembly system and application method
  • Integrated two-speed variable speed electric drive assembly system and application method

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Embodiment Construction

[0043] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0044] The integrated two-speed variable speed electric drive assembly system provided according to the present invention includes: a drive motor 1, a first brake 4, a second brake 11, a double-row planetary gear mechanism, a main reducer and a differential assembly 7; wherein:

[0045] The output shaft of the driving motor 1 is connected with the front planetary carrier in the double-row planetary gear mechanism through splines; The star frame is connected; the steel plates of the first brake 4 and the...

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Abstract

The invention provides an integrated two-speed transmission electric drive assembly system and an application method. The integrated two-speed transmission electric drive assembly system comprises a driving motor, a first brake, a second brake, a double-row planetary gear mechanism and a final reduction drive and differential assembly, wherein the output shaft of the driving motor is connected toa front-row planetary carrier through a spline; a front-row ring gear and a rear-row ring gear are integrated into one; a rear-row sun gear is connected to the front-row planetary carrier; steel plateassemblies of the first brake and the second brake are engaged with a gearbox body; a friction plate assembly of the first brake is engaged with an outer ring gear; the friction plate assembly of thesecond brake is engaged with the extension end of a front-row sun gear; and the output end of a rear-row planetary carrier is connected to the input shaft of the final reduction drive and differential assembly and outputs power to wheels. The integrated two-speed transmission electric drive assembly system decreases the axial dimension of a powertrain and decreases the mechanical noise while reducing the difficulty of the arrangement of a whole vehicle. The integrated two-speed transmission electric drive assembly system is compact in whole structure, small in size and light in weight. The design of two-speed transmission enables a motor to work in an efficient range for a long time so as to improve the power performance and economy of the whole vehicle.

Description

technical field [0001] The invention relates to the technical field of electric vehicle transmission, in particular to an integrated two-speed variable speed electric drive assembly system and an application method. Background technique [0002] Most of the currently commercially available pure electric vehicles use a single-stage reduction mechanism. Although its structure is simple and its cost is low, it cannot take into account the power and economy of pure electric vehicles. system efficiency. Especially in the low-load conditions of starting and maximum speed, the motor is in the low-efficiency zone, which seriously affects the life and endurance of the battery. [0003] The patent with the publication number CN102152738A discloses a drive motor and transmission power integration of an electric vehicle. This invention reduces the mechanical noise and vibration by designing the motor front end cover and the transmission housing as a whole, and reduces the overall vehic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K1/00B60K17/08B60K17/16
CPCB60K1/00B60K17/08B60K17/16
Inventor 殷承良黄维
Owner 张建龙
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