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Automatic two-gear transformer for pure electric automobile

An automatic transmission, pure electric vehicle technology, applied in vehicle gearbox, electric power unit, multi-gear ratio transmission, etc., can solve the problems of high requirements for driving motor and battery, low operating efficiency of driving motor, etc., to reduce the total volume , the effect of expanding the transmission ratio range and reducing the performance requirements

Inactive Publication Date: 2015-05-06
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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  • Automatic two-gear transformer for pure electric automobile

Examples

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Embodiment Construction

[0061] Example 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 third intermediate shaft 4, a first spur gear pair G1, a second spur gear Secondary G2 , third spur gear pair G3 , first torque transmitting device C1 , second torque transmitting device C2 , and differential assembly 15 . in:

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

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

[0064] 3) The cross section of the second intermediate shaft 3 is circular;

[0065] 4) The cross section of the third intermediate shaft 4 is circular;

[0066] 5) The first cylindrical gear pair G1 is a helical cylindrical gear pair, including the driving gear 5 of the first cylindrical gear pair and the driven gear 6 of the first cylindrical gear pair;

[0067] 6) The second cylindrical gear pair G...

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Abstract

An automatic two-gear transformer for a pure electric automobile comprises an input shaft, a first middle shaft, a second middle shaft, a third middle 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 and a differential assembly; rotation center lines of the input shaft, the third middle shaft and the differential assembly are mutually parallel. According to the automatic two-gear transformer for the pure electric automobile, automatic two-gear speed change is adopted, the transmission ratio range is expanded, the performance requirement on a drive motor can be reduced greatly, an efficient and light drive motor is allowed to be used, and the total size, the total mass and the total cost of an electric drive system of the pure electric automobile are further 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): F16H37/08F16H3/093F16H3/12
CPCF16H3/093F16H3/12F16H2200/0021F16H2200/0034B60K1/00B60K2001/001F16H2003/0818F16H3/0915
Inventor 程云江徐向阳刘艳芳杨帅
Owner BEIHANG UNIV
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