Flexible Dimensionierung und Optimierung hybrider Lithium-Ionenbatteriespeichersysteme mit verschiedenen Auslegungszielen

• Dimensioning and Optimization of Hybrid Li-Ion Battery Systems with different Optimization Goals

Becker, Jan Nicolas; Sauer, Dirk Uwe (Thesis advisor); Eckstein, Lutz (Thesis advisor)

Aachen (2017)
Book, Dissertation / PhD Thesis

In: Aachener Beiträge des ISEA 104
Page(s)/Article-Nr.: 1 Online-Ressource (iii ,157 Seiten) : Illustrationen, Diagramme

Dissertation, RWTH Aachen University, 2017

Abstract

Today’s traction battery systems of electric vehicles consist of a series- and parallel connection of one kind of battery cells. By using an additional dc-to-dc converter, battery cells of different kinds can be combined to a so called hybrid battery system with multiple individual packs. This approach offers significantly more flexibility during design of the battery system since the characteristics of the individual battery kinds can be combined advantageously. In this work a method has been developed which automatically dimensions an optimized battery system for defined vehicle requirements and a given set of battery cells. The developed tool has been used for several vehicle classes to analyze the approach of hybrid storage systems in terms of costs, system mass, volume and further categories and to compare the hybrid batteries to common single pack battery systems.