Authors: François Savoye; Pascal Venet; Serge Pelissier; Michael Millet; Jens Groot
Addresses: Volvo Group Trucks Technology, Renault trucks SAS, 69802 Saint Priest, France ' Université de Lyon, F-69622 Lyon, France Université Lyon 1, Ampere Laboratory, UMR CNRS 5005, France ' Université de Lyon, F-69000, Lyon, France IFSTTAR, AME, LTE, F-69500 Bron, France ' Volvo Group Trucks Technology, Renault trucks SAS, 69802 Saint Priest, France ' Volvo Group Trucks Technology, Sven Hultins gata 9D, 41288 Göteborg, Sweden
Abstract: Using the hybrid electric vehicle application as a reference, the possible impact of periodic current pulses on lithium ion secondary battery cycle life was evaluated. Several profile types, with and without pulses, were evaluated in a comparative study on cycle life of commercial graphite/LiFePO4 batteries. Results are presented, compared and analysed. Contrary to the well-known results on lead-acid batteries and to results in previously published work, there is no indication that periodic pulses could enhance the cycle life of Li-ion batteries. On the contrary, certain pulse patterns have been identified to be detrimental to Li-ion batteries.
Keywords: lithium-ion batteries; Li-ion batteries; battery lifetime; battery cycle life; battery ageing; hybrid electric vehicles; HEVs; hybrid vehicles; periodic current pulses; pulse patterns.
International Journal of Electric and Hybrid Vehicles, 2015 Vol.7 No.4, pp.323 - 341
Received: 04 Mar 2015
Accepted: 26 Mar 2015
Published online: 11 Feb 2016 *