文档名：基于自产热和外传热的锂离子电池热学模型参数辨识方法
摘要：锂离子电池热学模型参数(热容和热阻)的准确辨识对电池热电耦合建模及状态参数估计至关重要.然而传统测量方法成本高且测试周期长,如何利用充放电工况结合产热和传热机理研究快速热参数辨识方法具有重要意义.以8A?h软包锂离子电池为研究对象,建立分布式热路模型;设计双向脉冲工况实验,采用自适应粒子群算法(APSO)进行辨识;同时采用其他工况进行验证,实验和仿真温度误差小于0.1℃.另外,将热容和热阻转换为比热容和导热系数,并与其他文献中同类电池的参数进行比对,量级接近.研究结果表明,该方法可以有效解决层叠式软包锂离子电池热学模型参数辨识难的问题,且简便易行、成本低.
Abstract：Accurateidentificationofthermalmodelparameters(heatcapacityandthermalresistance)oflithiumionbatteriesiscrucialforthermoelectriccouplingmodelingandstateparameterestimationofbatteries.Thereisacertainconversionformulabetweenthethermalmodelparametersandthethermophysicalparameters(specificheatcapacityandthermalconductivity)oflithiumionbatteries,sothetwosetsofparametershaveanequivalentrelationship.Thestudyofthermalmodelparameterscanrefertotheresearchmethodsofthermophysicalparameters.Accuratemeasurementofbatteryspecificheatcapacityandthermalconductivityrequirestheuseofexpensivetestingequipment,whichiscostlyandtakeslongertotest.Usingoptimizationalgorithmstoidentifythermalmodelparametersnotonlyhaslowcost,butalsohasshortcalculationcycle.Inthispaper,afastmethodforidentifyingthethermalmodelparametersofNCMlaminatedsoftpackagedlithium-ionbatteriesisproposedbasedonthecharginganddischargingconditionscombinedwiththebatteryheatgenerationandheattransfermechanisms.Byestablishingadistributedthermalequivalentcircuitmodeltosimulatethetemperaturedistributionalongthethicknessdirectionofthebattery,thereversibleheatcanbeignoredandthecalculationofbatteryheatgenerationcanbesimplifiedbydesigningabidirectionalpulseoperatingcondition;Thetemperaturewasdiscretizedandthethermalmodelparametersof0℃,10℃,and20℃wereidentifiedusing(adaptiveparticleswarmoptimization(APSO)algorithm.Theidentifiedparametersareequivalentlytreatedasspecificheatcapacityandthermalconductivity,withanaveragespecificheatcapacityof0.996J/(g·K)andanaveragethermalconductivityof0.376W/(m·K).Comparingthespecificheatcapacityandthermalconductivityofbatteriesfromdifferentliterature,theyarewithinareasonablerange,andthedifferenceisnotmorethan8%.Temperaturesensitivityanalysiswasconducted.Whenthethermalmodelparameterschangedby±5%,thetemperatureerrorofthemodelsimulationresultswaslessthan0.08℃.Therefore,intherangeof0to20℃,thethermalmodelparametersarenotsensitivetotemperature.Finally,theidentifiedparametersarebroughtintothemodelandsimulatedusingadifferentstrategythantheparameteridentificationexperiment.Themeasuredandsimulatedbatterysurfacetemperaturesagreewellwithatemperatureerroroflessthan0.1℃,whichprovesthattheproposedthermalmodelparameteridentificationmethodhasahighaccuracy.Moreover,theproposedmethodhastheadvantageofsimplicityandsimplicity,requiringonlytwobatteriesofthesamespecification,withouttheneedforotherdevices,andhavingashorttestcycle.Itcanprovidetechnicalsupportfortheidentificationofthermalmodelparametersforstackedsoftpackagedlithiumionbatteries.
作者：孙丙香 宋东林 阮海军 张维戈 郑凯元 Author：SunBingxiang SongDonglin RuanHaijun ZhangWeige ZhengKaiyuan
作者单位：北京交通大学国家能源主动配电网技术研发中心北京100044伦敦帝国理工学院戴森设计工程学院伦敦SW72AZ
刊名：电工技术学报
Journal：TransactionsofChinaElectrotechnicalSociety
年，卷(期)：2024, 39(1)
分类号：TM911
关键词：层叠式软包 锂离子电池 分布式热路模型 热容和热阻 自产热和外传热
Keywords：Laminatedflexible lithium-ionbattery distributedthermalcircuitmodel heatcapacityandthermalresistance self-generatedheatandexternalheattransfer
机标分类号：U464.13TM912.1V434
在线出版日期：2024年1月18日
基金项目：基于自产热和外传热的锂离子电池热学模型参数辨识方法[
期刊论文] 电工技术学报--2024, 39(1)孙丙香 宋东林 阮海军 张维戈 郑凯元锂离子电池热学模型参数(热容和热阻)的准确辨识对电池热电耦合建模及状态参数估计至关重要.然而传统测量方法成本高且测试周期长,如何利用充放电工况结合产热和传热机理研究快速热参数辨识方法具有重要意义.以8A?h软...参考文献和引证文献
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