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New Electro-Thermal Battery Pack Model of an Electric Vehicle

Alhanouti, Muhammed; Gießler, Martin; Blank, Thomas; Gauterin, Frank

Abstract (englisch): 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.

Zugehörige Institution(en) am KIT Institut für Fahrzeugsystemtechnik (FAST)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator DOI: 10.3390/en9070563
ISSN: 1996-1073
URN: urn:nbn:de:swb:90-594274
KITopen ID: 1000059427
HGF-Programm 37.01.03; LK 01
Erschienen in Energies
Band 9
Heft 7
Seiten 563
Bemerkung zur Veröffentlichung Gefördert durch den KIT-Publikationsfonds
Schlagworte temperature influence; new OCV model; battery circuit model; synthesized battery model; thermal model; electric vehicle
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