第21卷第1期2023年2月福建工程学院学报JournalofFujianUniversityofTechnologyVol.21No.1Feb.2023doi:10.3969/j.issn.1672-4348.2023.01.008方形锂离子电池热行为集总建模仿真与实验林福兴1,2,吴国庆3,陈丙三1,2,范成龙1,2(1.福建省智能加工技术及装备重点实验室,福建福州350118;2.福建工程学院机械与汽车工程学院,福建福州350118;3.福建云众动力科技有限公司,福建福州350000)摘要:针对锂离子电池电化学产热机理复杂、热分析建模参数多等问题,引入集总模型思想,建立单体方形电池少参化产热模型。通过大量实验、数据分析,辩识电池热物性参数,获得基于真实物理参数的热行为仿真集总模型。对比单体电池在不同放电倍率下温度场的实验数据和仿真结果发现:在0.2、0.5、1C恒流放电工况下,集总模型对电池表面温度的预测误差均低于0.55℃,误差率小于1.94%,达到实际工程预测精度要求。该研究结果可为商业化锂离子电池热行为分析提供参考。关键词:单体方形锂离子电池;热建模;集总模型;热物性参数;有限元分析中图分类号:U262.44文献标志码:A文章编号:1672-4348(2023)01-0049-06Thermalbehaviorofsquarelithium-ionbatteriesbasedonlumpedmodelLINFuxing1,2,WUGuoqing3,CHENBingsan1,2,FANChenglong1,2(1.FujianKeyLaboratoryofIntelligentMachiningTechnologyandEquipment,FujianUniversityofTechnology,Fuzhou350118,China;2.SchoolofMechanicalandAutomotiveEngineering,FujianUniversityofTechnology,Fuzhou350118,China;3.FujianEdgelionPowerTechnologyCo.,Ltd.,Fuzhou350000,China)Abstract:Toaddresstheproblemsofcomplexelectrochemicalheatgenerationmechanismoflithium-ionbat-teriesandmultipleparametersofthermalanalysismodeling,theideaoflumpedmodelwasintroducedtoestab-lishaminimalparametricheatgenerationmodelforsinglesquarebattery.Thethermalparametersofthebatterywereidentifiedthroughalargenumberofexperimentsanddataanalysis,andalumpedmodelofthethermalbehaviorbasedonrealphysicalparameterswasobtained.Comparingtheexperimentaldataandsimulationre-sultsofthetemperaturefieldofsinglebatteryatdifferentdischargerates,itisfoundthattheerrorsofthelumpedmodelforthepredictionofthebatterysurfacetemperaturearealllowerthan0.55℃andtheerrorrateisle...