Hybrid electric vehicle energy management method based on multi-source information fusion

Abstract

The invention provides a hybrid electric vehicle energy management method based on multi-source information fusion, and belongs to the field of hybrid electric vehicle energy management. The method comprises the following steps: constructing a future long-term driving condition of a vehicle in combination with traffic information of a current driving road section of the vehicle, predicting to obtain a vehicle speed time relation curve of the whole travel of the vehicle, solving a target function of a power battery SOC by taking the vehicle speed time relation curve as a constraint, and predicting to obtain a reference track of the power battery SOC of the whole travel of the vehicle; predicting to obtain future short-term vehicle speed data of the vehicle by combining the actual vehicle speed, the preceding vehicle speed and the relative distance between the vehicle and the preceding vehicle at the current moment; and predicting the future engine output torque and power battery outputpower of the vehicle by combining the actual SOC of the power battery, the reference track of the SOC of the power battery and the future short-term vehicle speed data of the vehicle. According to theinvention, the long-term driving condition and the short-term driving condition of the vehicle are comprehensively considered, and the formulated vehicle energy management scheme is more reasonable.

Description

technical field [0001] The invention relates to a hybrid electric vehicle energy management method based on multi-source information fusion, and belongs to the technical field of hybrid electric vehicle energy management. Background technique [0002] Plug-in Hybrid Electric Vehicle (PHEV), compared with conventional vehicles or pure electric vehicles, plug-in hybrid vehicles have at least two energy sources, generally including internal combustion engines and storage in batteries or supercapacitors of electric energy. The biggest difference between plug-in hybrid electric vehicles and traditional hybrid electric vehicles is that the battery capacity is increased and external charging can be realized when parking. Therefore, plug-in hybrid electric vehicles need to use the power in the power battery Consumption as much as possible, further reducing fuel consumption on the basis of the traditional hybrid system, and how to achieve the reasonable consumption of battery power ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a hybrid electric vehicle energy management method based on multi-source information fusion, which is used to solve the problem of energy management of vehicles based on long-term driving conditions constructed only at a certain moment of road traffic information. The problem of unreasonable energy management scheme

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