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Concept of a Battery Aging Model for Lithium-Ion Batteries Considering the Lifetime Dependency on the Operation Strategy
D. Magnor, J.B. Gerschler, M. Ecker, P. Merk, D.U. Sauer
Components for PV Systems
Subtopic: Engineering and System Integration
Event: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany
Session: 4BO.11.3
3128 - 3134
ISBN: 3-936338-25-6
Paper DOI: 10.4229/24thEUPVSEC2009-4BO.11.3
0,00 EUR
Document(s): paper


Especially in applications with long system lifetimes like PV systems or electro-mobility applications, the battery share of the overall systems’ life cycle cost (LCC) is significant, due to the relatively high investment cost and the limited lifetimes of most battery systems. The battery lifetimes on the other hand are depending on a variety of parameters, some of which can be influenced by the operation strategy. In order to optimize the life cycle cost of the system two main questions have to be answered regarding the battery: what is the optimum battery size and how to control the operation strategy of the system. This paper shows a modeling approach that takes into consideration the battery lifetime depending on operation parameters like state of charge (SOC) or in fact the potential and the depth of the cycles SOC. The presented model approach offers the chance of predicting the battery lifetime depending on the operation conditions of a given application more precisely. This paves the way for an optimization of the energy and also the battery management system in order to minimize the LCC of the overall system.