Optimisation of Direct Battery Thermal Management for EVs Operating in Low-Temperature Climates

James Jeffs, Truong Quang Dinh, Widanalage Dhammika Widanage, Andrew McGordon and Alessandro Picarelli
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James Jeffs: WMG, University of Warwick, Coventry CV4 7AL, UK
Truong Quang Dinh: WMG, University of Warwick, Coventry CV4 7AL, UK
Widanalage Dhammika Widanage: WMG, University of Warwick, Coventry CV4 7AL, UK
Andrew McGordon: WMG, University of Warwick, Coventry CV4 7AL, UK
Alessandro Picarelli: Claytex Ltd., Edmund House, Rugby Rd., Leamington Spa CV32 6EL, UK

Energies, 2020, vol. 13, issue 22, 1-35

Abstract: Electric vehicles (EVs) experience a range reduction at low temperatures caused by the impact of cabin heating and a reduction in lithium ion performance. Heat pump equipped vehicles have been shown to reduce heating ventilation and air conditioning (HVAC) consumption and improve low ambient temperature range. Heating the electric battery, to improve its low temperature performance, leads to a reduction in heat availability for the cabin. In this paper, dynamic programming is used to find the optimal battery heating trajectory which can optimise the vehicle’s control for either cabin comfort or battery performance and, therefore, range. Using the strategy proposed in this research, a 6.2 % increase in range compared to no battery heating and 5.5 % increase in thermal comfort compared to full battery heating was achieved at an ambient temperature at −7 ° C.

Keywords: electric vehicle; thermal management; heat pump; dynamic programming; optimisation (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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