Method and device for processing vehicle skid, electric vehicle and storage medium

Abstract

The invention provides a method and device for processing vehicle skid, an electric vehicle and a storage medium. The method comprises the steps of firstly, obtaining the generator rotating speed dataof a vehicle within a specified time range; determining whether the vehicle is in a skid state according to the generator rotating speed data; acquiring the accelerator demand torque of an engine ofthe vehicle; when an automobile electronic stability control system is in an enabled state, receiving a torque set value transmitted by the automobile electronic stability control system; generating atarget torque parameter according to the generator rotating speed data and the accelerator required torque; comparing the torque set value with a target torque parameter; when the comparison result is that the difference value between the torque set value and the target torque parameter is greater than a preset vehicle calibration value, using the torque set value as the current output torque tolimit the accelerator required torque, so that the skid state of the vehicle is processed, the torque response is recovered at the highest speed on the premise that the electrical and mechanical safety is guaranteed, and the dynamic property and the mechanical and electrical safety of the whole vehicle are guaranteed.

Description

technical field [0001] The invention relates to the technical field of motor control, and in particular to a method and device for dealing with vehicle skidding, an electric vehicle and a storage medium. Background technique [0002] Under the background that low-carbon economy has become the mainstream of the times, electric vehicles have become the main direction of current automobile development. As the torque and power of electric vehicle motors continue to increase, and more and more electric vehicles are equipped with ESC (Electronic Stability Controller, automotive electronic stability control system) functions, the matching of ESC and MCU (automotive microcontroller) slipping strategies is on the whole. Vehicle safety is becoming more and more important. [0003] When the full accelerator pedal of an electric vehicle passes the deceleration belt, the vehicle is vacated, the motor speed rises suddenly, and the high torque falls to the ground instantly, which will cau...

AI Technical Summary

Problems solved by technology

[0003] When the full accelerator pedal of an electric vehicle passes the deceleration belt, the whole vehicle is vacated, the motor speed suddenly rises, and the high torque falls to the ground instantly, which will cause major risks such as motor overcurrent and reducer shaft breakage

Since the ESC (Automotive Electronic Stability Control System) detects the rate of change of the left and right wheel speeds during the slipping process, there is a delay compared to the motor controller's detection of the motor speed, and it cannot issue torque limit commands in time to protect the mechanical and electrical safety of the vehicle. The MCU (automotive microcontroller) independently judges the torque command, but in order to ensure the dynamic performance of the vehicle on the low road surface, the MCU (automotive microcontroller) cannot limit the torque for a long time, it needs to restore the torque response within a certain period of time, and over-deceleration The belt condition conflicts with the torque requirements of the low ice surface

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