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Two-speed automatic transmission for pure electric vehicle

An automatic transmission, pure electric vehicle technology, applied in vehicle gearboxes, electric power units, multi-gear ratio transmissions, etc., can solve the problems of high requirements for driving motors and batteries, low operating efficiency of driving motors, etc., to reduce the total volume. , to expand the range of transmission ratio, the effect of easy manufacturing and assembly

Active Publication Date: 2017-01-11
绿传(北京)汽车科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a two-speed automatic transmission for pure electric vehicles, so as to solve the problems of the existing single-speed reducer for pure electric vehicles, which have high requirements on the driving motor and battery, and the operating efficiency of the driving motor is low, and improve the efficiency of the pure electric vehicle. Power and economy of electric vehicles

Method used

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  • Two-speed automatic transmission for pure electric vehicle
  • Two-speed automatic transmission for pure electric vehicle
  • Two-speed automatic transmission for pure electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] Example 1 as figure 1 As shown, a two-speed automatic transmission for a pure electric vehicle of the present invention includes an input shaft 1, a first intermediate shaft 2, a second intermediate shaft 3, a first cylindrical gear pair G1, a second cylindrical gear pair G2, a third cylindrical gear pair gear pair G3 , first torque transmitting device C1 , second torque transmitting device C2 , and differential assembly 14 . in:

[0066] 1) The cross section of the input shaft 1 is circular;

[0067] 2) The cross section of the first intermediate shaft 2 is circular;

[0068] 3) The cross section of the second intermediate shaft 3 is circular;

[0069] 4) The first cylindrical gear pair G1 is a helical cylindrical gear pair, including the first cylindrical gear pair driving gear 4 and the first cylindrical gear pair driven gear 5;

[0070] 5) The second cylindrical gear pair G2 is a helical cylindrical gear pair, including the second cylindrical gear pair driving g...

Embodiment 2

[0104] Example 2 as figure 2As shown, a two-speed automatic transmission for a pure electric vehicle of the present invention includes an input shaft 1, a first intermediate shaft 2, a second intermediate shaft 3, a first cylindrical gear pair G1, a second cylindrical gear pair G2, a third cylindrical gear pair gear pair G3 , first torque transmitting device C1 , second torque transmitting device C2 , and differential assembly 14 . in:

[0105] 1) The cross section of the input shaft 1 is circular;

[0106] 2) The cross section of the first intermediate shaft 2 is circular;

[0107] 3) The cross section of the second intermediate shaft 3 is circular;

[0108] 4) The first cylindrical gear pair G1 is a helical cylindrical gear pair, including the first cylindrical gear pair driving gear 4 and the first cylindrical gear pair driven gear 5;

[0109] 5) The second cylindrical gear pair G2 is a helical cylindrical gear pair, including the second cylindrical gear pair driving g...

Embodiment 3

[0143] Example 3 as image 3 As shown, a two-speed automatic transmission for a pure electric vehicle of the present invention includes an input shaft 1, a first intermediate shaft 2, a second intermediate shaft 3, a first cylindrical gear pair G1, a second cylindrical gear pair G2, a third cylindrical gear pair gear pair G3 , first torque transmitting device C1 , second torque transmitting device C2 , and differential assembly 14 . in:

[0144] 1) The cross section of the input shaft 1 is circular;

[0145] 2) The cross section of the first intermediate shaft 2 is circular;

[0146] 3) The cross section of the second intermediate shaft 3 is circular;

[0147] 4) The first cylindrical gear pair G1 is a helical cylindrical gear pair, including the first cylindrical gear pair driving gear 4 and the first cylindrical gear pair driven gear 5;

[0148] 5) The second cylindrical gear pair G2 is a helical cylindrical gear pair, including the second cylindrical gear pair driving g...

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Abstract

A two-speed automatic transmission for pure electric vehicles, comprising an input shaft, a first intermediate shaft, a second intermediate shaft, a first cylindrical gear pair, a second cylindrical gear pair, a third cylindrical gear pair, and a first torque transmission device , the second torque transmission device, and the differential assembly; the rotation centerlines of the input shaft, the second intermediate shaft and the differential assembly are parallel to each other; the present invention adopts two-speed automatic transmission, which expands the transmission ratio range, It can greatly reduce the performance requirements of the drive motor, allow the use of high-efficiency and lightweight drive motors, and further reduce the total volume, total mass, and total cost of the electric drive system of pure electric vehicles.

Description

technical field [0001] The invention relates to a two-speed transmission, in particular to a two-speed automatic transmission applied to pure electric vehicles, belonging to the technical field of automobiles. Background technique [0002] Power transmission technology is the core technology of pure electric vehicles, and its type and performance directly determine the power performance and energy consumption level of pure electric vehicles. In the case of a certain drive motor performance, in order to further increase the torque of the drive wheel, meet the power requirements of pure electric vehicles, and be able to adjust the relationship between the motor speed and vehicle speed, a variable speed transmission is often used. At present, pure electric vehicles mostly use single-speed reducers, which are simple in structure, small in size, light in weight, and low in cost. There is no need to change gears during operation, and there is no power interruption. [0003] Howev...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H3/087F16H57/023
CPCF16H3/087F16H57/023F16H2200/0021B60K1/00B60K2001/001F16H2003/0818F16H3/089F16H2200/0034
Inventor 韩笑徐向阳刘艳芳吴潇潇
Owner 绿传(北京)汽车科技股份有限公司
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