Slip torque determining method and device and vehicle

Abstract

The invention provides a slip torque determination method and device and a vehicle, and the method comprises the steps: controlling a gearbox of the vehicle to forbid gear shifting under the conditionthat the slip error amount is greater than zero; under the conditions that the gearbox forbids gear shifting and the slip error amount is larger than a preset slip error amount threshold value, it isindicated that the vehicle is in a serious slip working condition, a first slip torque is determined, the first slip torque is controlled to be reduced to be within a preset fine adjustment slip torque range within a preset torque reduction time interval, namely, the slip torque can be calculated; under the working condition of serious slipping, the slip torque can be rapidly reduced to be withinthe range of fine adjustment slip torque, the vehicle can accurately execute operations such as forbidding gear shifting of the gearbox, the slip degree of vehicle tires is reduced, and thus the low-attachment starting performance and the acceleration performance of the vehicle are improved.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a slip torque determination method, device and vehicle. Background technique [0002] With the development of the vehicle field, automobiles have become one of the essential tools for people to travel. Pure electric vehicles and hybrid electric vehicles have gradually become the preferred vehicles in the field of vehicles due to their low emissions, low pollution, low noise, and energy saving. important branch. [0003] At present, in order to improve the low-attachment start and acceleration performance of traditional pure electric vehicles and hybrid electric vehicles, it is usually possible to install an acceleration slip regulation (Acceleration Slip Regulation, ASR) system on the car to improve the low-attachment start-up and acceleration performance, however, The control process of the ASR system is relatively complicated and the cost is high, which makes it imposs...

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a method, device and vehicle for determining slip torque, so as to solve the problems of poor starting and acceleration performance at low speed

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