Automatic transmission of electric vehicle

A technology for automatic transmissions and electric vehicles, applied in transmission control, components with teeth, belts/chains/gears, etc., to achieve the effects of extending driving range, reducing operating current, and improving work efficiency

Inactive Publication Date: 2016-06-01
安阳市荣强电机科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no mature pure electric vehicle automatic transmission that can be mass-produced

Method used

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  • Automatic transmission of electric vehicle
  • Automatic transmission of electric vehicle

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Embodiment Construction

[0015] In order to enable those skilled in the art to better understand the solution of the present invention, and to make the above-mentioned purpose, features and advantages of the present invention more obvious and comprehensible, the present invention will be further described in detail below in conjunction with examples.

[0016] Specific examples figure 1 , figure 2 As shown, an automatic transmission for an electric vehicle consists of a right casing 1, a left casing 2, a differential 4, an output gear 5, a high-grade output gear 6, a low-grade output gear 7, a high-grade input gear 8, a low-grade input gear 9, and a Gear tooth 11, shift lever 13, shift fork 14, shift spring 15, top tooth spring 16, shift cam 17, gear selection motor shaft 18, gear selection motor 19, gear selection motor bracket 20, and vehicle speed signal Sensor one 21, vehicle speed signal sensor two 22, gear position signal sensor 23 form, it is characterized in that:

[0017] Under normal circu...

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PUM

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Abstract

The invention provides an automatic transmission of an electric vehicle and relates to an automatic transmission of a pure electric vehicle. Under a normal situation, when a driving motor drives, a shifting gear box is in a high-speed operating state, namely that a motor input gear is meshed with a high-gear output gear, and a differential is in a high-speed working state and drives the electric vehicle to run; when in a situation that climbing or heavy load requires large torque, a gear selection motor is started by virtue of a controller and transmits a signal to a control system by virtue of a vehicle speed sensor I, a vehicle speed signal sensor II and a gear position signal sensor; and a shifting fork drives a shifting cam to separate the high-gear input gear, so that the motor input gear is switched to be meshed with a low-gear output gear, and thus the differential is enabled to be in a low-speed working state so as to drive the electric vehicle to run at a low speed. The automatic transmission has the beneficial effect of solving the problems that gear shifting can not be realized since faults occur to a gear shifting process due to long gear shifting time caused by manual operation of a shift lever.

Description

technical field [0001] The invention relates to an automatic transmission of a pure electric vehicle. Background technique [0002] At present, the automatic transmission of pure electric vehicles is basically in a vacuum state in China. Compared with other gearboxes, E-AMT has an absolute market advantage. The development and policy orientation of the electric vehicle industry also illustrate the future development prospects of E-AMT automatic transmissions. [0003] At home and abroad, there are relevant researches on multi-speed electric vehicles. The Italian "OerlikonGraziano" company has developed a two-speed transmission matching small electric vehicles. The simulation shows that it can significantly reduce battery energy consumption; The electric bus has developed a 3-speed mechanical automatic transmission (without clutch), which improves the economy of the vehicle by 9%, and reduces the acceleration time from 0 to 50km / h by 18%. The traction motor works in an ide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H61/02F16H61/32F16H59/44F16H63/30
CPCF16H61/0204F16H59/44F16H61/32F16H63/304F16H2063/3056F16H2063/3089
Inventor 杜秀荣
Owner 安阳市荣强电机科技有限公司
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