Lithium-ion batteries life estimation for plug-in hybrid electric vehicles

Abstract

This paper deals with life estimation of lithium batteries for plug-in hybrid electric vehicles (PHEVs). An aging model, based on the concept of accumulated charge throughput, has been developed to estimate battery life under ldquoreal worldrdquo driving cycles (custom driving cycles based on driving statistics). The objective is to determine the ldquodamagerdquo on the life related to each driving pattern to determine equivalent miles/years. Results indicates that Lithium-ion batteries appear to be 10 year/150,000 mile capable, provided that they are not overcharged, nor consistently operated at high temperatures, nor in charge sustaining mode at a very low state of charge.