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Two-gear automatic transmission for battery electric vehicle

An automatic transmission, pure electric vehicle technology, applied in electric power units, transmissions, power units, 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 and expand the transmission ratio. The effect of range, good dynamic performance

Inactive Publication Date: 2015-05-20
BEIHANG UNIV
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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-gear automatic transmission for battery electric vehicle
  • Two-gear automatic transmission for battery electric vehicle
  • Two-gear automatic transmission for battery electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] 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 , and the differential assembly 13 . in:

[0062] 1) The cross section of the input shaft 1 is circular;

[0063] 2) The cross section of the intermediate shaft 2 is circular;

[0064] 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;

[0065] 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;

[0066] 5) The third cylindrical gear pair G3 is a helical...

Embodiment 2

[0098] 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 , and the differential assembly 13 . in:

[0099] 1) The cross section of the input shaft 1 is circular;

[0100] 2) The cross section of the intermediate shaft 2 is circular;

[0101] 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;

[0102] 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;

[0103] 5) The third cylindrical gear pair G3 is a helica...

Embodiment 3

[0136] 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 , and the differential assembly 13 . in:

[0137] 1) The cross section of the input shaft 1 is circular;

[0138] 2) The cross section of the intermediate shaft 2 is circular;

[0139] 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;

[0140] 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;

[0141] 5) The third cylindrical gear pair G3 is a helical...

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PUM

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Abstract

A two-gear automatic transmission for a battery 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 transfer device, a second torque transfer device and a differential assembly. The rotating central lines of the input shaft, the intermediate shaft and the differential assembly are mutually parallel. A driving motor, an automatic transmission and a driving bridge are integrated to form a whole, a transmission ratio range is widened, the performance requirement of the driving motor is remarkably reduced, the two-gear automatic transmission is simple and compact in structure, light in weight, stable in transmission and wide in transmission ratio range and has very high power transfer efficiency, energy consumption level is reduced, the power performance and economical efficiency of the whole vehicle are improved, and manufacturing cost is remarkably reduced.

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 Applications(China)
IPC IPC(8): F16H3/087
CPCF16H37/0806F16H57/023B60K1/00B60K2001/001B60Y2400/4244
Inventor 陈志峰徐向阳刘艳芳
Owner BEIHANG UNIV
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