Title: Economical approach for sizing a battery in plug-in hybrid electric vehicles considering statistical user behaviour and power demand for climatisation

Authors: Jörg Gissing; Sidney Baltzer; Thomas Lichius; Peter Jeck; Lutz Eckstein

Addresses: Institute for Automotive Engineering, RWTH Aachen University, Steinbachstr. 7, 52074 Aachen, Germany ' Institute for Automotive Engineering, RWTH Aachen University, Steinbachstr. 7, 52074 Aachen, Germany ' Institute for Automotive Engineering, RWTH Aachen University, Steinbachstr. 7, 52074 Aachen, Germany ' Institute for Automotive Engineering, RWTH Aachen University, Steinbachstr. 7, 52074 Aachen, Germany ' Institute for Automotive Engineering, RWTH Aachen University, Steinbachstr. 7, 52074 Aachen, Germany

Abstract: This paper presents a novel analytic method for determining the optimal battery capacity for plug-in hybrid electric vehicles (PHEVs) from an economical point of view. Owing to its analytic structure, this generic approach allows a fast parametrisation and evaluation of different influences on the optimal battery capacity. It is shown how this approach can be parametrised and the sensitivity of the optimal battery capacity to different influences is evaluated (battery and energy prices, battery degradation, cabin climatisation, engine efficiency and usable waste heat). The results and the presented adaption of this approach to an ecological optimisation of the battery capacity in terms of life cycle carbon dioxide emissions illustrate the potential of this novel approach.

Keywords: PHEVs; plug-in hybrid electric vehicles; REEVs; range extended electric vehicles; battery sizing; climatisation demand; battery degradation; life cycle carbon emissions; CO2; carbon dioxide; user behaviour; power demand; optimal battery capacity; vehicle cabin climatisation; engine efficiency; usable waste heat reuse; vehicle emissions.

DOI: 10.1504/IJEHV.2015.068944

International Journal of Electric and Hybrid Vehicles, 2015 Vol.7 No.1, pp.62 - 82

Received: 19 Aug 2014
Accepted: 23 Nov 2014

Published online: 18 Apr 2015 *

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