Electric vehicle real-time energy management method and device, vehicle, and storage medium

Abstract

The invention relates to the technical field of automobile intelligent control, in particular to an electric vehicle real-time energy management method and device, a vehicle, and a storage medium. The method comprises the following steps: building an energy management model of an electric vehicle; determining a data set of an initial value lambda<0> of a co-state factor according to a plurality of driving conditions; according to road condition information of a current driving condition, determining a reference charge state track of the current driving condition; according to the data set of the initial value lambda<0> of the co-state factor and a relationship between the co-state factor and an equivalent factor, determining an initial value s<0> of the equivalent factor, and performing real-time energy optimization; determining a difference value between a charge state at the current moment and a charge state obtained in the previous step, and adjusting the size of the equivalent factor by using a PI controller. According to the technical solution of the invention, the optimality of a maximum value principle and the real-time performance of an equivalent consumption minimum strategy are combined, so that the problems of equivalent factor selection and self-adaption in the equivalent consumption minimum strategy are solved, and the method is easier to popularize and apply.

Description

technical field [0001] The invention relates to the technical field of automobile intelligent control, in particular to an electric vehicle real-time energy management method, device, vehicle and storage medium. Background technique [0002] With the increasingly serious environmental pollution and the aggravation of the energy crisis, the development of new energy vehicles is an important measure to solve this problem. New energy vehicles have the advantages of low emissions, high energy conversion efficiency, and diverse fuel sources, and are considered to be one of the important directions for the sustainable development of future automobiles. Since most new energy vehicles are powered by multiple energy sources, energy management strategies play a key role in new energy vehicles, which can directly affect the operating point of energy sources, prolong the service life of components, and improve vehicle economy. [0003] At present, energy management strategies are mainl...

AI Technical Summary

Problems solved by technology

The design of rule-based energy management strategy is simple and easy to implement, but it cannot guarantee the global optimal

The energy management strategy based on optimization theory can guarantee the global optimum, but the calculation load is relatively large, and it cannot be run online in real time.

[0004] In recent years, the Equivalent Consumption Minimization Strategy (ECMS) based on Pontryagin's Maximum Principle (PMP) has been widely used in academia and industry to design energy management strategy, but the biggest problem facing the algorithm is the selection of the initial value of the equivalent factor and how to dynamically adjust its value in real time

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