A Quantitative Comprehensive Evaluation Method for Fuel Cell Vehicle Energy Management Control Strategy

Abstract

The invention relates to a quantitative comprehensive assessment method for the energy management control strategy of a fuel cell car. The method comprises the following steps that: (1) establishing acomprehensive assessment three-layer model, wherein the first layer comprises two assessment indexes including fuel economy and fuel cell durability, the second layer comprises a plurality of fuel cell component sub-indexes used for assessing the fuel cell durability, and the third layer comprises a working condition factor influencing the fuel cell component sub-indexes; (2) adopting the energymanagement control strategy to be assessed to operate the fuel cell car, and obtaining a fuel economy score and the attenuating property score of the fuel cell under each working condition factor; and(3) determining the assessment weight matrix of each layer, carrying out weighted calculation layer by layer according to each score obtained in (2), and obtaining a comprehensive score under the corresponding energy management control strategy. Compared with the prior art, the method disclosed by the invention has an objective and reliable assessment result, and a guidance direction can be provided for the improvement of the energy management control strategy.

Description

technical field [0001] The invention relates to an evaluation method, in particular to a quantitative comprehensive evaluation method for the energy management control strategy of a fuel cell vehicle. Background technique [0002] Since the vehicle-mounted fuel cell system will frequently experience complex working conditions such as dynamic loading, start / stop, continuous low-load or idling operation, and high power output, compared with fixed fuel cell systems and fuel cell systems as ordinary mobile power sources In other words, its performance degradation is more serious. On the basis of the current material technology level, it is necessary to optimize and improve the system control strategy of the fuel cell. For the system control strategy of the fuel cell, some scholars proposed a fuel cell start-stop control strategy based on nitrogen purge in order to reduce the performance degradation of the fuel cell during the start / stop process; some scholars proposed a fuel ce...

AI Technical Summary

Problems solved by technology

Although the above patents involve an evaluation method for fuel cells, most of them are relatively simple, simply evaluating the life of the fuel cell according to the working conditions of the fuel cell

Does not take into account the complex operating conditions of the fuel cell and the different attenuation of the various components

And it does not involve the evaluation of energy management strategies, nor does it comprehensively consider the economic evaluation

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