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Two-speed automatic transmission for pure electric vehicles

A technology for automatic transmissions and pure electric vehicles, which is applied to transmissions, gear transmissions, belts/chains/gears, etc. It can solve the problems of high requirements for drive motors and batteries, low operating efficiency of drive motors, etc., to reduce the total volume, The effect of expanding the transmission ratio range and high power transmission efficiency

Active Publication Date: 2017-02-22
钦州绿传科技有限公司
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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 vehicles
  • Two-speed automatic transmission for pure electric vehicles
  • Two-speed automatic transmission for pure electric vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] 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, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, a third cylindrical gear pair G3, a first torque The transmission device C1 , the second torque transmission device C2 , the planetary gear transmission PG, and the differential assembly 13 . in:

[0075] 1) The cross section of the input shaft 1 is circular;

[0076] 2) The cross section of the intermediate shaft 2 is circular;

[0077] 3) The first cylindrical gear pair G1 is a helical cylindrical gear pair, including the first cylindrical gear pair driving gear 3 and the first cylindrical gear pair driven gear 4;

[0078] 4) The second cylindrical gear pair G2 is a helical cylindrical gear pair, including the second cylindrical gear pair driving gear 5 and the second cylindrical gear pair driven gear 6;

[0079] 5) The third c...

Embodiment 2

[0116] Example 2 as figure 2 As shown, a two-speed automatic transmission for a pure electric vehicle of the present invention includes an input shaft 1, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, a third cylindrical gear pair G3, a first torque The transmission device C1 , the second torque transmission device C2 , the planetary gear transmission PG, and the differential assembly 13 . in:

[0117] 1) The cross section of the input shaft 1 is circular;

[0118] 2) The cross section of the intermediate shaft 2 is circular;

[0119] 3) The first cylindrical gear pair G1 is a helical cylindrical gear pair, including the first cylindrical gear pair driving gear 3 and the first cylindrical gear pair driven gear 4;

[0120] 4) The second cylindrical gear pair G2 is a helical cylindrical gear pair, including the second cylindrical gear pair driving gear 5 and the second cylindrical gear pair driven gear 6;

[0121] 5) The third ...

Embodiment 3

[0158] 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, an intermediate shaft 2, a first cylindrical gear pair G1, a second cylindrical gear pair G2, a third cylindrical gear pair G3, a first torque The transmission device C1 , the second torque transmission device C2 , the planetary gear transmission PG, and the differential assembly 13 . in:

[0159] 1) The cross section of the input shaft 1 is circular;

[0160] 2) The cross section of the intermediate shaft 2 is circular;

[0161] 3) The first cylindrical gear pair G1 is a helical cylindrical gear pair, including the first cylindrical gear pair driving gear 3 and the first cylindrical gear pair driven gear 4;

[0162] 4) The second cylindrical gear pair G2 is a helical cylindrical gear pair, including the second cylindrical gear pair driving gear 5 and the second cylindrical gear pair driven gear 6;

[0163] 5) The third cyl...

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Abstract

A two-gear automatic transmission for a pure electric vehicle comprises an input shaft, an intermediate shaft, a first cylindrical gear pair, a second cylindrical gear pair, a third cylindrical gear pair, a first torque transmission device, a second torque transmission device, a planetary gear transmission device and a differential mechanism assembly, wherein the rotating center lines of the input shaft, the intermediate shaft and the differential mechanism assembly are parallel to one another. The two-gear automatic transmission is simple and compact in structure, stable in transmission and wide in transmission ratio range, the pure electric vehicle can obtain better power performance, a motor can run in an efficient area more frequently, the energy consumption level is reduced, the driving range is increased, and the power performance and the economic performance of the finished vehicle are improved.

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): F16H3/48
CPCF16H3/48F16H3/52
Inventor 陈志峰徐向阳刘艳芳王家琪
Owner 钦州绿传科技有限公司
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