Energy Distribution Method for Hybrid Electric Vehicle with Trajectory Optimization Function

Abstract

The invention provides an energy distribution method of a hybrid electric vehicle with a track optimization function and belongs to the technical field of automobile driving. With the adoption of the energy distribution method of the hybrid electric vehicle with the track optimization function, the aims that an optimal movement speed track of the hybrid electric vehicle in a cruising process is optimized according to current vehicle speed information in real time so that the fuel economy of the hybrid electric vehicle can be improved to the greatest extent are realized. A current vehicle driving speed track is optimized through acquiring speed information of a front vehicle and current speed information of a current vehicle, and SOC (State of Charge) of a hybrid electric vehicle battery through an information acquisition module. The invention provides an optimization method of an energy distribution strategy with a track planning function for the hybrid electric vehicle; the speed information of the front vehicle is firstly acquired through the hybrid electric vehicle and an optimal speed track of the current vehicle is optimized and calculated according to the acquired speed information; unnecessary speed fluctuation in a cruising process of the hybrid electric vehicle is reduced, and economical efficiency and comfort of the hybrid electric vehicle are improved.

Description

technical field [0001] The invention belongs to the technical field of automobile driving. Background technique [0002] With the improvement of intelligence, the cruise control system has become popular in various types of vehicles. The adaptive cruise control of the vehicle mainly focuses on driving safety, that is, the vehicle in front accelerates, the vehicle accelerates, the vehicle in front decelerates, the vehicle slows down, and The problems of economy and comfort are not considered in terms of the vehicle's driving trajectory. In addition, as environmental issues and energy crises become increasingly prominent, the requirements for fuel economy of vehicles are gradually increasing. As far as the current situation is concerned, the fuel economy optimization of hybrid vehicles mainly focuses on the energy distribution mode (torque distribution) and gear (speed ratio) optimization of hybrid vehicles. (GPS) / Geographic Information System (GIS) and other external facili...

AI Technical Summary

Problems solved by technology

The premise of the entire optimization process is the acquisition of the speed of the vehicle in front, but there may be fluctuations in the speed of the vehicle in front collected with the help of external equipment, that is, the vehicle in front has rapid acceleration and deceleration

Under the premise of ensuring safety, such rapid acceleration / deceleration is unnecessary for hybrid vehicles and will seriously affect the fuel economy of hybrid vehicles

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