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1、2002-01-1962ThermalEvaluationofToyotaPriusBatteryPackMatthewZolot,AhmadA.PesaranandMarkMihalicNationalRenewableEnergyLaboratoryABSTRACTTheToyotaPriusisafive-passengercompactsedanpoweredbya52kWgasolineengineanda33kWAspartofaU.S.DepartmentofEnergysupportedstudy,electricmotor.I
2、thasacurbweightof1254kg.ThePriustheNationalRenewableEnergyLaboratoryhashasacomplexdual-modehybridconfigurationinwhichbenchmarkedaToyotaPriushybridelectricvehiclefromenergytoandfromthevehiclewheelscantravelalongthreeaspects:systemanalysis,auxiliaryloads,andseveraldifferentpat
3、hways.Mechanicalenergytothebatterypackthermalperformance.Thispaperfocuseswheelspassesthroughaplanetarygearsetthatcouplesonthetestingofthebatterybackoutofthevehicle.Moretotheengine,electricmotor,generator,andtothefinalrecentin-vehicledynamometertestshaveconfirmeddrive.Powerto
4、thewheelscanbeprovidedsolelybyatheseout-of-vehicletests.Ourpurposewasto(273.6VoltNickelMetalHydride[NiMH])batterypackunderstandhowthebatterieswerepackagedandthroughtheelectricmotor,directlyfromthegasolineperformedfromathermalperspective.ThePriusNiMHengine,orfromacombinationo
5、fboththemotorandthebatterypackwastestedatvarioustemperatures(0°C,engine.Thebatterypackcanberechargeddirectlyby25°C,and40°C)andunderdrivingcycles(HWFET,energyfromthewheelspoweringthemotorFTP,andUS06).Theairflowthroughthepackwasalso(regenerativebraking)orfromexcessenergyfromth
6、eanalyzed.Overall,wefoundthattheU.S.Priusbatterygasolineengine–whichturnsthegenerator[1].packthermalmanagementsystemincorporatesinterestingfeaturesandperformswellundertestedThefollowingsectionsexplainhowthePriusbatteryconditions.packisconstructed,howitisthermallymanaged,andh
7、owtheNiMHbatteriesperformatdifferentINTRODUCTIONtemperaturesundercontrolledlaboratoryconditionsthatsimulatevariousdrivecycles.Morein-depthanalysesTheNationalRenewableEnergyLaboratory(NREL)canbefoundintheDOEreportwrittenbyZolotetal.[2].performsresearchanddevelopmentofhybridel
8、ectricvehicles(HEVs)aspartofaprogramsponsoredbytheBATTERYPACKDESCRIPTIONU.S
