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Two-gear automatic transmission for electric automobile

A technology of automatic transmission and electric vehicle, applied in the direction of transmission, transmission parts, gear transmission, etc., can solve the problems of high production cost and large shift shock, and achieve low production cost, small shift shock, and compact structure. Effect

Inactive Publication Date: 2013-02-27
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the AMT structure is adopted, a synchronizer is required, and the shifting impact is relatively large at this time; while the DCT structure is adopted, a dual clutch is required, and the production cost is relatively high at this time

Method used

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  • Two-gear automatic transmission for electric automobile
  • Two-gear automatic transmission for electric automobile
  • Two-gear automatic transmission for electric automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0018] Example: Combine figure 1 , the two-speed automatic transmission for electric vehicles in this embodiment is composed of the first transmission system and the second transmission system in parallel, and the first transmission system and the second transmission system do not work at the same time; that is to say, when the first transmission system works , the second transmission system does not work, when the second transmission system works, the first transmission system does not work.

[0019] The first transmission system is a fixed-axis gear transmission system, and the overall structure is a layout of three parallel shafts, which are: motor 1 and motor shaft I (the input shaft of the first transmission system, which is also the wheel shaft of the first gear), and the upper shaft II , output shaft IV; on the motor shaft I, the first gear 2 is fixedly connected by a key, and the second gear 3 meshing with the first gear 2 is fixedly connected on the upper shaft II by ...

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PUM

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Abstract

The invention discloses a two-gear automatic transmission for an electric automobile. The two-gear automatic transmission comprises two electromagnetic clutches and two double-speed-reduction ordinary gear trains which have the same working principle. Power is transmitted to a front pair of gears through a driving motor to achieve primary speed reduction and then transmitted to a rear pair of gears by controlling working of the two electromagnetic clutches to achieve secondary speed reduction. By controlling the two electromagnetic clutches to work or stop working, the shifting of two gears can be achieved. By adopting the two single electromagnetic clutches to serve as gear shifting elements of the two-gear automatic transmission, the two-gear automatic transmission for the electric automobile is small in gear shifting impact, simple in form, compact in structure, small in size, light and capable of according with the efficient and light principle of the automobile.

Description

Technical field: [0001] The invention relates to a two-speed automatic transmission for an electric vehicle. Background technique: [0002] Petroleum resource crisis and vehicle exhaust emissions have become two major technical problems faced by vehicles powered by internal combustion engines. The automotive industry must seek vehicles with low emissions and comprehensive utilization of energy. Therefore, the electric vehicle with these characteristics has become a research hotspot in various countries. It is an important way to solve the energy crisis and environmental pollution, and it is an important new type of green transportation in the 21st century. [0003] At present, electric vehicles on the market do not have automatic transmissions, but use single-stage reducers, which mainly rely on controlling the speed of the drive motor itself to achieve speed change. This makes it impossible for the drive motor to provide high instantaneous torque in the constant torque are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H3/087F16H57/023
Inventor 陈奇赵韩黄康冯永恺冯关华周志红尹建波赵玉才陈戈
Owner HEFEI UNIV OF TECH
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