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Analyse expérimentale et modélisation d’éléments de batterie et de leurs assemblages : application aux véhicules électriques et hybrides

Abstract : As part of the development of electric and hybrid vehicles, energy management in the battery pack is a major issue. Car manufacturers need a numerical model to represent the dynamic behavior of batteries. The objective of this work is to develop, on the one hand, a characterization method of the dynamic behavior of battery cells and their assemblies, and on the other hand the combined numerical models which are simple, fast, robust and with the best accuracy/simplicity compromise. The first part of the work is dedicated to develop a new experimental characterization method with an equivalent circuit model, which can be applied easily to different battery cells and allows calibrating the complexity of the model (number of the RC circuits) according to the measurement duration of the resting phase after a solicitation. Therefore, the generated model is able to follow the rapid and slow voltage change of the battery cell, which improves voltage and state of charge estimation for the BMS (Battery Management System) applications. The validation tests on different battery cells show that the generated model allows accurate prediction of the battery cell’s dynamic behavior. The second part of the work studies the cell assemblies with cells connected in series. It begins with an energy definition of the cell assembly. Then modelling of the assembly with the developed characterization method is discussed. The validation tests were carried out on different assemblies and show that the dynamic behavior of the assembly can be also well represented with the identified models
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https://tel.archives-ouvertes.fr/tel-01157751
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  • HAL Id : tel-01157751, version 1

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An Li. Analyse expérimentale et modélisation d’éléments de batterie et de leurs assemblages : application aux véhicules électriques et hybrides. Energie électrique. Université Claude Bernard - Lyon I, 2013. Français. ⟨NNT : 2013LYO10021⟩. ⟨tel-01157751⟩

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