Driving system for electric vehicle

Abstract

The invention relates to a driving system for an electric vehicle. A clutch pedal is eliminated, and only an accelerator pedal and a brake pedal are kept; a clutch control unit controls a clutch driving motor to disengage a clutch under the condition that gear shifting is needed; the clutch driving motor is a linear motor (or a rotary motor and a cam mechanism), and a complicated speed-reducing torque-increasing device and a transmission mechanism in the conventional clutch operating mechanism are not needed; an automatic transmission control unit sends an instruction according to a vehicle automatic gear shifting rule, and a gear selecting and shifting motor drives a gear selecting and shifting execution mechanism to finish a gear shifting action; the clutch control unit controls the clutch driving motor to move in an opposite direction, so that the clutch is engaged, the power of a vehicle driving motor is transferred through a gearbox, and an automatic speed change function is realized; and the vehicle driving motor is only simply controlled in the process, so that the requirement on the manufacturing technology of the driving motor is reduced.

Description

technical field [0001] The invention belongs to the field of electric vehicles, and in particular relates to a driving system of the electric vehicle. Background technique [0002] In recent years, due to the increasing tension of global energy and the continuous deterioration of the environment, the development of electric vehicles with high efficiency, energy saving and environmental protection is accelerating. [0003] In order to ensure that the electric vehicle is easy to operate and has good driving performance, flexibility, stability and comfort, the electric vehicle should have a power transmission system suitable for its driving and use requirements. [0004] In the current electric vehicles, most of them are independently driven by a single motor, which can minimize the corresponding quality and cost, but such a system has high requirements for matching and control among the motor, clutch and transmission. In order to meet the power, economy, comfort and other rel...

AI Technical Summary

Problems solved by technology

[0008] The Chinese patent with application number 200920130219 discloses a shift power compensation device, which is characterized in that: the shift power compensation device includes a power source, a dual clutch, and a mechanical automatic transmission, and the mechanical automatic transmission is equipped with high, Low gear, clutch, hollow shaft, core shaft located in the hollow shaft, and the output shaft matched with the hollow shaft through the high and low gears, the high gear is sleeved on the hollow shaft, and the power The source is connected to the hollow shaft of the mechanical automatic transmission through a dual clutch, the input end of the clutch is connected to the dual clutch through the mandrel, and the output end is connected to the high gear gear of the mechanical automatic transmission. Adopt double clutch, complex structure

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