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Two-gear mechanical automatic gearbox for electric vehicle

A technology for automatic transmissions and electric vehicles, applied in automatic clutches, mechanical equipment, clutches, etc., can solve problems such as high dependence on electronic devices, complex automatic transmission structures, and reduced system stability, so as to improve system stability and inheritance Good, the effect of reducing performance requirements

Active Publication Date: 2013-09-18
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The advantage is that the shift strategy can be controlled by a computer, and the shift is precise and controllable; however, the structure of this automatic transmission is relatively complicated, and it is highly dependent on electronic devices, which will lead to an increase in manufacturing costs and a decrease in system stability.

Method used

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  • Two-gear mechanical automatic gearbox for electric vehicle
  • Two-gear mechanical automatic gearbox for electric vehicle
  • Two-gear mechanical automatic gearbox for electric vehicle

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with the embodiments shown in the drawings.

[0027] In order to reduce the requirements on the drive motor, and at the same time, directly adopt the mechanical structure to control the gear shift on the basis of no additional configuration of the electric shift operating mechanism, and reduce the dependence on electronic devices, the two-speed mechanical automatic transmission of the electric vehicle of this embodiment The structure diagram is as figure 1 Shown.

[0028] The automatic transmission includes a transmission control system, and a speed change transmission mechanism and a shift operation mechanism which are all connected with the transmission control system. The shifting operating mechanism includes a synchronizer shifting mechanism and a centrifugal shifting operating mechanism. The centrifugal shifting operating mechanism is connected with the transmission control system and the synchronizer ...

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Abstract

The invention provides a two-gear mechanical automatic gearbox for an electric vehicle, and belongs to the technical field of electric vehicle transmission. The transmission comprises a transmission control system, a double-stage driving variable transmission mechanism and a gear shift control mechanism, wherein the gear shift control mechanism comprises a centrifugation gear shift control mechanism and a synchronizer gear shift mechanism; and the centrifugation gear shift control mechanism adopts a mechanical structure, detects vehicle speed through gear drive, and generates centrifugal force to be combined with returning force of a spring to realize the mechanical automatic speed change. The automatic gearbox adopts two gears to realize automatic speed change, combines with a driving motor with an excellent speed regulation property, reduces performance requirements of the driving system on the driving motor, and improves the efficiency of the driving motor as well as dynamic property and economy of a whole vehicle; and compared with a conventional electronic-controlled automatic transmission, the manufacturing inheritance is good, and an electrical control operation gear shift mechanism is omitted and replaced with the mechanical gear shift mechanism, so that the manufacturing cost is lowered, and the system stability is improved.

Description

Technical field [0001] The present invention belongs to the technical field of electric automobile transmission, and relates to an electric automobile automatic transmission, in particular to an electric automobile transmission that realizes automatic shifting through a mechanical structure. Background technique [0002] In order to solve the two major global problems of energy crisis and environmental pollution, electric vehicle technology has become the main direction of future automobile development. In the power transmission system of ordinary internal combustion engine vehicles, multi-speed transmission is often used to enable the vehicle to obtain good power and fuel economy, and effectively reduce engine emissions pollution. Compared with the internal combustion engine, the motor drive has the mechanical characteristics of low speed and constant torque, high speed and constant power, and has a wider speed range, which has great advantages as the power source of automobiles...

Claims

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Application Information

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IPC IPC(8): F16H3/02F16H59/38F16H61/26F16D43/04B60W10/08B60W10/11
Inventor 熊璐卢泳陵余卓平袁兵
Owner TONGJI UNIV
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