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Slope sliding prevention control method and system for electric vehicle and vehicle

A technology for electric vehicles and control methods, applied in electric vehicles, control drives, control devices, etc., can solve problems such as safety risks, driver fatigue, and vehicle slippage, so as to reduce safety risks, reduce fatigue, and reduce acceleration. Effects of pedal operation

Inactive Publication Date: 2021-08-13
重庆长安新能源汽车科技有限公司
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AI Technical Summary

Problems solved by technology

If you encounter a ramp start condition or a traffic jam on a non-flat road, the vehicle is prone to slipping backwards; in order to avoid the car from following or starting to slip, the driver needs to keep the accelerator operation at all times and frequently adjust the accelerator opening, which will also cause Causing driver fatigue, creating a safety risk

Method used

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  • Slope sliding prevention control method and system for electric vehicle and vehicle
  • Slope sliding prevention control method and system for electric vehicle and vehicle

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Embodiment Construction

[0041] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0042] see figure 1 As shown, the present embodiment discloses a control method for anti-slip slope of an electric vehicle, and the steps include:

[0043] (S1) Determine whether the current vehicle state satisfies the activation condition of the anti-slope function; if so, activate the anti-slope function, and go to the execution step (S2); otherwise, end the process;

[0044] (S2) Calculate the final anti-slope torque and distribute it to the motor for execution;

[0045] (S3) Judging whether the current vehicle state satisfies the condition for exiting the anti-slope function, if so, exit the anti-slope function, and go to the execution step (S4); otherwise, go to the execution step (S2);

[0046] (S4) Judging whether the current vehicle state satisfies the activation condition of the anti-slope function again, if so, go to the executio...

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Abstract

The invention discloses an anti-slope-sliding control method and system for an electric vehicle and the vehicle. The method comprises the steps that whether the current vehicle state meets the anti-slope-sliding function activation condition or not is judged; and if yes, activating the anti-slip function, calculating the final anti-slip torque, and distributing the final anti-slip torque to the motor for execution. On the basis of not increasing the hardware cost, the accelerator pedal operation actions of a driver are reduced, so that the fatigue of the driver is relieved, the safety risk in the driving process is reduced. Meanwhile, the effect of assisting hill starting is achieved.

Description

technical field [0001] The present invention relates to the technical field of vehicle control, in particular to a method, system and vehicle for controlling slope prevention of electric vehicles. Background technique [0002] The increasingly serious problems of energy crisis, environmental pollution and greenhouse effect have made new energy vehicles, especially pure electric vehicles, an inevitable trend of change in the automotive industry. Pure electric vehicles have the advantages of energy saving, environmental protection, economy, high NVH quality, simple structure, and strong power, and have attracted extensive attention from scientific research institutions and enterprises. [0003] At present, in some entry-level and low-cost pure electric vehicles, the chassis electronic control system only supports the ABS function, without ESC and other components, and does not have the hill start assist function. If you encounter a ramp start condition or a traffic jam on an ...

Claims

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Application Information

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IPC IPC(8): B60L15/20
CPCB60L15/2081B60L2240/421B60L2240/423Y02T10/72
Inventor 江彬刘新文陈飞彭升
Owner 重庆长安新能源汽车科技有限公司
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