14.30 Marcus Auch - FKFS.pdf

1、Institute of Automotive EngineeringExternal Thermal Management Concept for BEV Fast ChargingMarcus Auch Problem Demand of shorter BEV charging time Fast Charge(FC)20 to 80%State of Charge(SOC)in 20min03/12/2024University of StuttgartThermal Management Expo conference2MotivationIrreversible losses of

2、 LG21700M50T at SOC=50%scaled up to battery pack losses50.4 kW12.6 kWFCXFCSolutionExternal thermal management system to reduce in-vehicle cooling requirementsIrreversiblelossesReversiblelosses Problem Demand of shorter BEV charging time Fast Charge(FC)20 to 80%State of Charge(SOC)in 20min Extreme Fa

3、st Charge(XFC)10 to 80%State of Charge(SOC)in 10min Increased charging currents Increased battery waste heat3MotivationCoolEVCharging power up to 500kWBattery wasteheat lossesup to 40 kWDecreased vehiclemassDecreased coolingcircuit spaceApplication athighway rest areaUsage of batterywaste heatSoluti

4、onExternal thermal management system to reduce in-vehicle cooling requirementsUniversity of StuttgartThermal Management Expo conference03/12/20244Source:Adapted from Hochschule Esslingen,Fakultt Mobilitt und Technik(MT)Professur Fahrzeugkonzeption/DeiningerHeat ExchangerCouplingCoolingRefrigeration

5、District HeatingExternal Thermal ManagementExternal Thermal ManagementConceptualization:Overall ConceptUniversity of StuttgartThermal Management Expo conference03/12/20245VehicleCooling Circuit OpticoolExternalCooling Circuit Propylen-Glycol 50:50ExternalRefrigeration Circuit R454BHydraulic HosePump

6、TankQuick CouplingHeat ExchangerHeat Exchanger/EvaporatorCompressorCondenserExpansion ValveConceptualization:Overall ConceptUniversity of StuttgartThermal Management Expo conference03/12/20246Conceptualization:Design-ProcessVehicleCooling Circuit OpticoolExternalCooling Circuit P