A hybrid vehicle online real-time hierarchical energy management method and system

Abstract

The invention relates to an online real-time hierarchical energy management method and system for a hybrid vehicle. The method includes: obtaining the control MAP of the system control strategy of the hybrid electric vehicle; obtaining the current working condition information and the system state variable of the hybrid electric vehicle; using the control MAP to determine the control quantity according to the working condition information and the system state variable; generating The control track of the system state variable; complete the energy management of the hybrid vehicle according to the control track of the system state variable. By adopting the control MAP, the present invention can determine the corresponding control quantity through the obtained working condition information and system state variables of the plug-in hybrid electric vehicle, and thus obtain the control trajectory of the system state variables according to the determined control quantity. Then, the energy management of the hybrid electric vehicle is completed according to the generated control trajectory, so as to improve the stability of energy distribution and solve the problem of difficulty in online application of the vehicle energy management technology existing in the prior art.

Description

technical field [0001] The invention relates to the field of vehicle energy management, in particular to an online real-time layered energy management method and system for a hybrid vehicle. Background technique [0002] In the energy management technology of plug-in hybrid electric vehicles based on model predictive control (Model Predictive Control, MPC), the quality of the reference trajectory has a great influence on the application effect of MPC. The current research is mainly divided into two types. One is to assume that the accurate working condition information of the vehicle can be obtained in advance through GPS, ITS and other systems. State of State (SOC) is planned in advance, and then this reference trajectory is sent to the lower layer of MPC for tracking control. The main disadvantage of this problem is that in practical applications, the working condition information of the vehicle cannot be accurately obtained, and the upper-level planning needs to combine ...

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Problems solved by technology

[0031] The purpose of the present invention is to provide an online real-time hierarchical energy management method and system for hybrid vehicles, so as to improve the stability of vehicle energy distribution and solve the problem of difficulty in online application of vehicle energy management technology in the prior art

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