Power-interrupting-free shifting speed changing box of electric vehicle and shifting control method of power-interrupting-free shifting speed changing box

A technology of power interruption and gearbox, which is applied in the direction of transmission control, transmission, gear transmission, etc., can solve the problems of affecting the ride comfort of the vehicle, increasing the size of the transmission, power interruption, etc., and achieves low production cost and smooth speed. Simpler effect than switching process and control

Active Publication Date: 2016-08-17
青岛莱吉传动系统科技有限公司
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AI Technical Summary

Problems solved by technology

The electromechanical automatic transmission AMT has the advantage of high transmission efficiency, but the traditional electromechanical automatic transmission has power interruption during the shift process, which affects the

Method used

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  • Power-interrupting-free shifting speed changing box of electric vehicle and shifting control method of power-interrupting-free shifting speed changing box
  • Power-interrupting-free shifting speed changing box of electric vehicle and shifting control method of power-interrupting-free shifting speed changing box
  • Power-interrupting-free shifting speed changing box of electric vehicle and shifting control method of power-interrupting-free shifting speed changing box

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[0061] In order to further illustrate the technical solution of the present invention, in conjunction with the accompanying drawings, the specific implementation of the present invention is as follows:

[0062] In a nutshell, the gearbox of the present invention is mainly composed of three pairs of gears, two overrunning clutches and a disc clutch, one pair of the three pairs of gears can control the overrunning clutch on the output shaft, and the other two pairs of different transmission The ratio gear pair is two gears, and the transmission ratio of the intermediate gear pair where the overrunning clutch is controlled is greater than the transmission ratio of the first gear pair.

[0063] like figure 1 , figure 2 and Figure 8 As shown, the present invention discloses a non-power interruption shift gearbox for an electric vehicle, which is composed of an input shaft 1, a first gear pair mechanism, a second gear pair mechanism, a plate clutch, an output shaft 17, and a shi...

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Abstract

The invention discloses a power-interrupting-free shifting speed changing box of an electric vehicle and a shifting control method of the power-interrupting-free shifting speed changing box. The speed changing box comprises a first gear pair mechanism, a second gear pair mechanism, a disc clutch and a shifting control mechanism, in the shifting control mechanism, a first gear overrunning clutch and a control overrunning clutch are mounted in corresponding gears, a control friction plate is fixed on a roller retainer and a roller shifting fork of the first gear overrunning clutch, a wave spring is mounted in an annular groove in an end surface of a second control gear, and a control pressure plate is axially pre-tightened through the wave spring, is clamped in the annular groove in the end surface of the second control gear and rotates along with the second control gear. By the shifting control method of the speed changing box, first gear engaging, second gear engaging and gear reversing actions can be realized and do not intervene. By the power-interrupting-free shifting speed changing box of the electric vehicle, the problem of interrupting of shifting power of the traditional AMT is solved, and a smooth speed ratio switching process can be realized. In addition, by the structure, a shifting fork and a shifting fork shaft are further omitted, the system structure is greatly simplified, and the total weight of a transmission is reduced.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle transmission, and in particular relates to an electric vehicle non-power interruption shift gearbox and a shift control method thereof. Background technique [0002] How to reduce dependence on oil is an important direction for the development of the modern automobile industry. In the past two years, my country's pure electric vehicles have developed rapidly. Many companies have launched pure electric vehicles on the market, and pure electric vehicles have entered industrialization. [0003] There are many kinds of driving mechanisms for pure electric vehicles, such as the non-gear motor direct drive scheme, that is, the motor directly drives the wheels through a fixed speed ratio reduction device. This transmission mode has good smoothness, but it has high performance requirements for the motor battery. Vehicle dynamics are poor. The transmission scheme of motor plus gearbox greatly re...

Claims

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Application Information

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IPC IPC(8): F16H3/10F16H61/04F16D41/066
CPCF16D41/066F16H3/10F16H61/04F16H2061/0474
Inventor 高炳钊包凯岳汉奇田萌健林志斌
Owner 青岛莱吉传动系统科技有限公司
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