Computer and Modernization

Previous Articles     Next Articles

LithiumBatteryRemainingUsefulLifePredictionBasedonIUPF

  

  1. (SchoolofElectronicsandInformation,Xi’anPolytechnicUniversity,Xi’an710048,China)
  • Received:2018-04-08 Online:2018-08-23 Published:2018-08-27

Abstract: Withthevigorousdevelopmentofnewenergyvehicles,thehealthassessmentoflithiumbatteriesforpowersupplydeviceshasgraduallybeentakenintoconsideration.Researchgraduallyshiftedfromthecurrentremainingchargeoflithiumbatteriesconcernedtothecalculationoftheirremainingusefullife.InordertoestimatetheremainingservicelifeofLi-ionbatteryefficientlyandaccurately,amethodofpredictingremaininglifetimeoflithiumbatterybasedonImprovedUnscentedParticleFilter(IUPF)isproposed.Basedonthestatisticequationoflithium-ionbatteryandtheequationofobservation,thetwoparameterswhichreflecttheinternalresistanceofthebatteryandthetwoparameterswhichreflectthedegradationrateofthebatteryperformanceareestimatedtoobtainthelithiumbatterycapacityformulaincludingthefailuretime.Thelifecycledataoflithium-ionbatteriesprovidedbyNASA’sAmespredictiondatabaseareverifiedbysimulation.Theperformanceoftheevaluationresultsisevaluatedbythreekindsofevaluationindexes.Theresultsshowthattheproposedmethodcanbeappliedtolithium-ionbatteryremaininglifeestimation,alsoimprovestheaccuracyoftheUPFmethodtopredict.

Key words: lithiumbattery, remainingusefullife, IUPF, newenergy

CLC Number: