A method for limiting the speed of an electric vehicle
A technology of electric vehicles and two-wheeled electric vehicles, which is applied in the fields of electric vehicles, electric energy management, control drive, etc., can solve the problems of poor riding experience, unfavorable physical and mental health and safe travel, distraction and other problems, and achieve Reduce driving fatigue, reduce speed bumps, and improve comfort
Active Publication Date: 2022-03-29
佛山中锦微电科技有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0003] However, most of the current speed limit methods are overspeed power cuts. The technology of this speed limit method is too simple, that is, only by identifying the vehicle speed, when the vehicle speed exceeds a predetermined upper limit, cut off the power supply of the electric vehicle motor, including disconnecting the overall power supply or The way of turning off the driving pulse of the MOS tube, the power supply of the motor will be restored when the vehicle speed drops below the predetermined upper limit after the power is cut off, this simple logic control method makes the riding experience significantly worse The cyclist feels a sudden decrease in speed, and when the power supply is restored, the cyclist feels a sudden increase in speed due to the sudden increase in power. The phenomenon of leaning forward and sitting back quickly makes people feel tired and bored, which brings great bad feelings and distracts attention to travel, which is not conducive to physical and mental health and safe travel
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0025] The electric vehicle speed limit method described in this embodiment is applied to the commonly used two-wheeled electric vehicle control system. Consistent with the conventional application, this two-wheeled electric vehicle control system also includes a motor phase sensor, an accelerator handle and an electronic control unit. ECM, the electronic control unit ECM carries out actions such as starting, running, speed regulation, and braking of the electric vehicle drive motor according to the accelerator handle command, key switch, brake signal, and power supply voltage safety detection signal. The control system of the vehicle provides such a speed limiting method, which includes the steps set forth below.
[0026] Such as figure 1 As shown, follow the sequence of steps shown in the figure to perform the operation of the following method, and refer to the attached figure 2 In order to understand the technical structure and step relationship of the present invention. ...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention provides a method for limiting the speed of an electric vehicle, which belongs to the technical field of electric vehicle manufacturing, and includes steps ① the electric control unit ECM obtains the motor speed through a phase signal and calculates the vehicle speed Vt according to the wheel diameter; step ② compares Vt with the speed limit V1, When Vt<V1, enter step ③; when Vt>V1, enter step ④; step ③ ECM makes the motor controlled by the handle; step ④ ECM makes the phase frequency gradually decrease at the starting point of V1, and the deceleration time is t1 seconds, and Vt Compare with V1: if Vt>V1, go to step ⑤, if Vt<V1, go back to step ③ and then go to step ⑥; step ⑤ deceleration signal becomes 0 duty cycle signal, until Vt<V1, go back to step ③ Then proceed to step ⑥; step ⑥, if the opening of the throttle handle is less than the first opening at this time, maintain step ③, if not less than the first opening, proceed to step ⑦; step ⑦ controls the phase frequency to increase, and the maximum value is V1 phase frequency , return to step ③ after t2 seconds.
Description
technical field [0001] The invention belongs to the technical field of electric vehicle manufacturing, and in particular relates to a speed limiting method for an electric vehicle. Background technique [0002] Electric vehicles are relatively portable means of transportation for people. With the continuous regulation of the management of riding electric vehicles, the speed limit of electric vehicles has become an important technical parameter for whether electric vehicles meet the standards. [0003] However, most of the current speed limit methods are overspeed power cuts. The technology of this speed limit method is too simple, that is, only by identifying the vehicle speed, when the vehicle speed exceeds a predetermined upper limit, cut off the power supply of the electric vehicle motor, including disconnecting the overall power supply or The way of turning off the driving pulse of the MOS tube, the power supply of the motor will be restored when the vehicle speed drops ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): B62J27/00B60L15/20B62K23/04
CPCB62J27/00B60L15/20B62K23/04B60L2240/421B60L2240/12Y02T10/72
Inventor 杨明杨天依
Owner 佛山中锦微电科技有限公司