Control method and device for shift assist system for pure electric vehicle
A technology of a pure electric vehicle and a control method, which is applied to the control field of a shift assist system for a pure electric vehicle, can solve the problems of uneven shifting process, clutch wear and the like, and achieves increased smoothness, reduced wear, and realized shift operation. Effect
Active Publication Date: 2021-11-23
湖南晟芯源电子科技有限公司
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Problems solved by technology
[0004] The purpose of the embodiments of the present invention is to provide a control method and device for a shift assist system for a pure electric vehicle, so as to solve the problem that the shift process is not smooth and the clutch wear is serious
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[0049] An exemplary embodiment of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown, it is understood that the disclosure can be implemented in various forms without limitation. Instead, these embodiments are provided to be more thoroughly understood to disclose the present disclosure, and can communicate the scope of the scope of the present disclosure to those skilled in the art.
[0050] like figure 1 As shown, specific embodiments of the present invention provide a control method of a pure electric vehicle shift assist system, and the pure electric vehicle is assembled with a mechanical transmission including:
[0051] Step 101, obtain the current gear value of the pure electric vehicle.
[0052] In the specific embodiment of the present invention, the current dynamic value of the pure electric vehicle can be calculated from the motor vehicle of the p...
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The invention provides a control method and device for a shift assist system for a pure electric vehicle, wherein the pure electric vehicle is equipped with a mechanical transmission, and the control method includes: obtaining the current gear value of the pure electric vehicle; Determine the target gear value of the pure electric vehicle based on the current gear value; determine the target motor speed signal of the pure electric vehicle according to the target gear value of the pure electric vehicle; control the motor for speed regulation according to the target motor speed signal of the pure electric vehicle ;When it is detected that the motor speed is synchronized with the speed of the transmission input shaft, prompt the driver to release the clutch pedal; after detecting that the clutch pedal is released, switch the working mode of the motor to free mode, and after detecting that the clutch is fully engaged, Switching the working mode of the motor to the torque control mode can increase the smoothness of the shifting process and reduce the wear of the clutch.
Description
Technical field [0001] The present invention relates to the field of pure electric vehicle vehicle control technology, and more particularly to control methods and apparatus for shift auxiliary systems for pure electric vehicles. Background technique [0002] Pure electric cars are completely car power supplies as its power source, compared to traditional internal combustion engines, solve the pollution problems of automobile exhaust and the waste of resources. The driving motor of the pure electric vehicle has a wide range of operating speeds, and the motor is approximately constant torque at low speed, and the working characteristics of approximately constant power at high speeds are compared to the requirements of the vehicle. At present, pure electric vehicles are mainly used in urban and urban suburbs, which will be in a variety of working conditions. Its minimum steady driving speed is 3 to 6 kilometers per hour (km / h), the maximum speed can reach 100km / h, or even highe...
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IPC IPC(8): B60L15/20
CPCB60L15/2054B60L2240/12B60L2240/421B60L2240/423B60L2240/48Y02T10/72
Inventor 周维廖水林
Owner 湖南晟芯源电子科技有限公司