Anti-slip control method for new energy automobile

A technology of a new energy vehicle and a control method, which is applied in the field of parking control of new energy vehicles, can solve the problems of inconsistent driving direction and driving gear, potential safety hazards of backward sliding distance and backward sliding speed, vehicle NVH discount, etc., so as to achieve a comfortable ride. Subjective feeling, the effect of reducing low-frequency noise and preventing speed jitter

Active Publication Date: 2020-11-06
CHERY COMML VEHICLE ANHUI
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0002] When a pure electric vehicle starts on a slope, the driver will experience differences in the driving direction and The phenomenon of inconsistent driving gears, large backslide distance and fast backslip speed have certain safety hazards, and at the same time, the rapid adjustment of torque during the parking process is likely to cause noise, which greatly reduces the NVH of the vehicle

Method used

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  • Anti-slip control method for new energy automobile

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Embodiment Construction

[0034] The specific implementation of the present invention will be described in further detail below by describing the embodiments with reference to the accompanying drawings, so as to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.

[0035] Such as figure 1 Shown is the anti-slope function flow of the present invention, the present invention is a new energy vehicle anti-slope control method, and the new energy vehicle includes a vehicle controller (VCU) and a motor controller (MCU).

[0036] In order to prevent the reverse rolling phenomenon of the pure electric vehicle when starting on a slope, as well as the large noise, an anti-slope function is added to the motor control strategy. The invention is used for assisting starting of an electric vehicle, optimizing the distance of slipping back and the low-frequency noise when standing on a slope, and specificall...

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Abstract

The invention discloses an anti-slip control method for a new energy automobile. The method comprises the steps that a vehicle control unit judges whether a vehicle has slip information or not according to a gear signal, a hand brake signal, a foot brake signal and whether a brake system has a fault or not; and if the slip information exists, the vehicle control unit sends an anti-slip instructionto a motor controller to enter a slope parking mode, wherein the slip information is that the rotating direction of a motor is opposite to the driving gear requirement and the rotating speed exceedsa set threshold value. By the adoption of the technical scheme, force is given in advance, the backward sliding distance is shortened, meanwhile, the slope sliding speed is reduced, and the safety performance of the vehicle is improved; and low-frequency noise during slope parking is reduced, and more comfortable riding subjective feeling is brought to passengers.

Description

technical field [0001] The invention belongs to the technical field of parking control of new energy vehicles. More specifically, the present invention relates to a new energy vehicle anti-slope control method. Background technique [0002] When a pure electric vehicle starts on a slope, during the process from releasing the brake pedal to stepping on the accelerator pedal to driving the whole vehicle, there will be a phenomenon that the driving direction of the whole vehicle is inconsistent with the driving gear. There are certain safety hazards in the fast back-sliding speed, and at the same time, the rapid adjustment of the torque in the process of standing on the slope is easy to cause noise, which greatly reduces the NVH of the vehicle. Contents of the invention [0003] The invention provides a new energy vehicle anti-slope control method, the purpose of which is to shorten the distance of the slope at the end of the slope, slow down the speed of the slope, and redu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B60L15/20
CPCB60L15/20B60L15/2018Y02T10/72
Inventor 闵贺
Owner CHERY COMML VEHICLE ANHUI
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