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Energies 2016, 9(7), 563;

New Electro-Thermal Battery Pack Model of an Electric Vehicle

Institute of Vehicle System Technology, Karlsruhe Institute of Technology, Karlsruhe 76131, Germany
Institute of Data Processing and Electronics, Eggenstein-Leopoldshafen 76344, Germany
Author to whom correspondence should be addressed.
Academic Editor: Michael Gerard Pecht
Received: 30 May 2016 / Revised: 4 July 2016 / Accepted: 12 July 2016 / Published: 20 July 2016
PDF [5016 KB, uploaded 20 July 2016]


Since the evolution of the electric and hybrid vehicle, the analysis of batteries’ characteristics and influence on driving range has become essential. This fact advocates the necessity of accurate simulation modeling for batteries. Different models for the Li-ion battery cell are reviewed in this paper and a group of the highly dynamic models is selected for comparison. A new open circuit voltage (OCV) model is proposed. The new model can simulate the OCV curves of lithium iron magnesium phosphate (LiFeMgPO4) battery type at different temperatures. It also considers both charging and discharging cases. The most remarkable features from different models, in addition to the proposed OCV model, are integrated in a single hybrid electrical model. A lumped thermal model is implemented to simulate the temperature development in the battery cell. The synthesized electro-thermal battery cell model is extended to model a battery pack of an actual electric vehicle. Experimental tests on the battery, as well as drive tests on the vehicle are performed. The proposed model demonstrates a higher modeling accuracy, for the battery pack voltage, than the constituent models under extreme maneuver drive tests. View Full-Text
Keywords: temperature influence; new OCV model; battery circuit model; synthesized battery model; thermal model; electric vehicle temperature influence; new OCV model; battery circuit model; synthesized battery model; thermal model; electric vehicle

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Alhanouti, M.; Gießler, M.; Blank, T.; Gauterin, F. New Electro-Thermal Battery Pack Model of an Electric Vehicle. Energies 2016, 9, 563.

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