Self-adaptive equivalent consumption minimization energy management method for fuel cell vehicle

Abstract

The invention relates to a self-adaptive equivalent consumption minimization energy management method for a fuel cell vehicle, and belongs to the technical field of new energy. A mode of periodicallyupdating equivalent factors in an equivalent consumption minimization energy management strategy is adopted, and it is guaranteed that the updated equivalent factors are used for power distribution sothat the charge state of an energy storage cell can change in the direction of converging to a target reference value at the fastest speed in short-term future time; required power time series data of the vehicle in a short-term future time range is predicted by adopting an intelligent algorithm, and the predicted required power data is applied to local optimization to determine a short-term optimal equivalent factor; and on the basis of the equivalent consumption minimization strategy, the equivalent factors are adaptively adjusted by a local optimization method, so that maintenance capability of the charge state of the energy storage cell is improved, and the fuel economy of a power system is guaranteed to the greatest extent. The approximately optimal fuel economy of the power system is guaranteed through the approximately optimal power distribution proportion of the equivalent hydrogen consumption.

Description

technical field [0001] The invention belongs to the technical field of new energy, and relates to an energy management method for self-adaptive equivalent consumption minimization of a fuel cell vehicle. Background technique [0002] The power system of a fuel cell vehicle is usually composed of a fuel cell engine and an energy storage battery. According to the power level of the fuel cell engine and the capacity of the energy storage battery, the power system of a fuel cell vehicle can be divided into an extended range type and a full power type. Among them, the full-power fuel cell vehicle power system is equipped with a high-power fuel cell engine and a small-capacity energy storage battery. It has the advantages of compact structure, light weight, easy layout, no charging, and long mileage. It is the key direction for the future development of fuel cell vehicles. . For a full-power fuel cell hybrid electric vehicle integrated with a small-capacity energy storage battery...

AI Technical Summary

Problems solved by technology

However, the equivalence factor of ECMS is usually a fixed value, which cannot maintain the state of charge of the energy storage battery under different driving conditions.

Although the traditional self-adaptive ECMS can periodically adjust the equivalent factor according to the actual feedback value of the state of charge of the energy storage battery to converge the state of charge of the energy storage battery to the target reference value, but due to its constant proportional coefficient, the adaptive effect is limited

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