Method, device, vehicle and medium for preventing vehicle from rolling on slope

Abstract

The invention provides a method and device for preventing vehicle ramp slipping, a vehicle and a medium. The method comprises the steps that a gear signal, a brake pedal signal, an accelerator pedal signal, motor rotation speed and an actual motor output torque of the vehicle are obtained; the operation condition of the vehicle is judged according to the gear signal, the brake pedal signal, the accelerator pedal signal and the motor rotation speed; the range of the ramp-slipping-resistant rotation speed of the motor is determined according to the operation condition of the vehicle; and when the motor rotation speed is in range of the ramp-slipping-resistant rotation speed and the actual output torque is lower than target torque, the motor is controlled to enter a zero rotation speed mode,so that slipping is prevented. Therefore, through the method, whether the slipping-resistant function is started or not is judged according to the current operation condition and state information ofthe vehicle, unintended starting of the slipping-resistant function is avoided, and the reliability of the slipping-resistant function of the vehicle and the vehicle safety during user driving are improved.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a method, a device, a vehicle and a medium for preventing a vehicle from rolling on a slope. Background technique [0002] At present, in order to avoid safety accidents caused by the vehicle slipping backward when the electric vehicle starts on a slope, in the related technology, the rotor speed signal of the motor of the vehicle can be collected by the vehicle controller, and the collected data can be sent to the motor controller, and then the motor controller compares the collected signal with the preset anti-slope speed threshold to determine whether to enable the anti-slope function. If it is determined to enable the anti-slope function, the motor controller controls the motor Output large torque when slipping, so that the vehicle stops on the slope. [0003] However, the applicant found that when the vehicle is controlled according to the above method, since the an...

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Problems solved by technology

[0003] However, the applicant found that when the vehicle is controlled according to the above method, since the anti-slope speed threshold is basically fixed, this judgment method may cause the vehicle to turn on the anti-slope function unexpectedly, and then cause the vehicle to Vibration occurs during driving, which reduces the comfort of the user driving the vehicle

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