Control method and device for preventing vehicle slipping and electric vehicle
A control method and vehicle technology, which are applied in the field of devices and electric vehicles, and control methods for preventing vehicles from slipping, can solve problems such as low efficiency, inability to enter the anti-slope control mode in time, and inability to prevent vehicles from rolling back in time.
Active Publication Date: 2020-06-02
BORGWARD AUTOMOTIVE CHINA CO LTD
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[0004] However, the above method often cannot enter the anti-slope control mode in time when the vehicle actually needs to perform anti-slope control, and the efficiency is low, resulting in the inability to prevent the vehicle from slipping backwards in time, and there are potential safety hazards
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[0037] Specific embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present disclosure, and are not intended to limit the present disclosure.
[0038] In the current anti-slope control method, the VCU controls the torque to prevent the slope when the conditions for anti-slope control are met according to the detected brake pedal, accelerator pedal, gear position and motor speed. However, the judgment condition of the above-mentioned method for the brake pedal is usually "the brake pedal is not depressed", and when the vehicle is on a slope, if the vehicle has a tendency to slip backwards, the driver will instinctively step on the brake pedal to prevent The vehicle slips backwards, so even if the depth of the brake pedal is not deep, if the slope of the slope is large, the anti-slip mode cannot be ent...
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The invention relates to a control method and device capable of preventing a vehicle from sliding downwards on a slope and an electric vehicle. The control method capable of preventing a vehicle from sliding downwards on a slope comprises the following steps of judging whether the current state of the vehicle meets the condition of preventing the vehicle from sliding downwards on the slope or not; if yes, according to the rotating speed of a motor and the opening degree of a brake pedal of the vehicle, obtaining a resultant moment of the vehicle; according to the resultant moment of the vehicle and a gravity moment of the vehicle, obtaining a target output torque for preventing the vehicle from sliding downwards on the slope; and controlling the motor to operate in a manner that the target output torque for preventing the vehicle from sliding downwards on the slope is used as a motor output torque, so that the vehicle is static. According to the control method disclosed by the invention, through judging whether the current state of the vehicle meets the condition of preventing the vehicle from sliding downwards on the slope or not, the vehicle is controlled to be prevented from sliding downwards on the slope in time, even a driver steps on the brake pedal by instinct when the vehicle is in the trend of sliding downwards on the slope, the effect of preventing the vehicle from sliding downwards on the slope is not influenced, the efficiency of controlling the vehicle so as to prevent the vehicle from sliding on the slope is improved, and the occurrence of a phenomenon that the vehicle slides on the slope is avoided.
Description
technical field [0001] The present disclosure relates to vehicle control technology, in particular, to a control method and device for preventing a vehicle from sliding downhill, and an electric vehicle. Background technique [0002] With the improvement of people's environmental awareness and the increase of energy pressure, the popularity of electric vehicles is gradually increasing, and the weight of the battery pack of electric vehicles increases the overall weight of electric vehicles to a certain extent. The phenomenon is more obvious than that of traditional cars. [0003] Therefore, in order to prevent slopes, electric vehicles usually adopt a certain anti-slope control method, which is realized by the Vehicle Control Unit (VCU). In the anti-slope control mode, when the state of the vehicle meets the expected conditions , the VCU calculates the target torque of the motor, and controls the motor to run with the target torque as the output torque. [0004] However, t...
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IPC IPC(8): B60L15/20
CPCB60L15/2018B60L2240/423Y02T10/72
Inventor 董新龙
Owner BORGWARD AUTOMOTIVE CHINA CO LTD