出版日期:2019

简介:Electricvehicle(EV)hasbeensteadilygainingattentionandasaviablealternativetomitigatepressingglobalenergycrisisandenvironmentalissuescausedbyconventionalinternalcombustionenginevehicles.Nonetheless,thedynamicoperationofEVencompassinghighcharginganddischargingcurrentsgeneratedfromregenerativebrakingandacceleration,respectively,mayadverselyaffectthecyclelifeoftheconventionalenergystoragesystem.Hence,incorporationofsupercapacitorsintotheenergystoragesystemisrecommendedinviewofitssuperiorcycleefficiencyandhighpowerdensity,whichaidsinrelievingthebattery’sstressandthusextendsitscyclelife.Inthisstudy,ahybridenergystoragesystem(HESS)comprisingLi-ionbatteriesandsupercapacitorsaremodeledtoevaluateitselectricalandthermalperformancesunderdifferentdrivingcycles.Theresultsobtainedrevealthatthedynamicstress,peakpowerdemandandthermalperformanceofthebatteryhavebeensignificantlyimprovedbyincorporatingsupercapacitorsintothebatterypackinHESS.Incomparisonwiththeconventionalbatteryenergystoragesystem,thepeakcurrentdemandsofthebatteryinHESSforUDDSandUS06cycleshavebeenreducedby63%,72.9%and71.7%,respectively.Thisapproachhasshowntobeeffectiveinextendingthebattery’slifespanandisabletoimprovethesafetyandreliabilityoftheconventionalbatteryenergystoragesystem.