第42卷第4期2023年4月Vol.42No.4Apr.2023重庆交通大学学报(自然科学版)JOURNALOFCHONGQINGJIAOTONGUNIVERSITY(NATURALSCIENCE)DOI:10.3969/j.issn.1674-0696.2023.04.19锂电池复合热管理系统的散热性能优化设计张甫仁,苟欢,梁贝贝,何延晓,朱臆霖(重庆交通大学,机电与车辆工程学院,重庆400074)摘要:针对锂电池组散热问题,提出了一种将分岔液冷通道与复合相变材料相结合的复合液冷系统,并对其散热性能进行了数值研究o首先,通过单体电池充放电实验,得到电池的产热量;其次,建立三维电池组模型,以冷却通道各级数量和复合相变材料的厚度为设计变量,采用最优拉丁方方法构建44个试验样本点;然后,基于响应面法建立近似模型,并采用了多目标粒子群算法,进行优化设计;最后,讨论冷却液质量流量的影响。结果表明:当分岔液冷通道各级数量为5、5、7,复合相变材料厚度为5.6599mm时,可获得更好的冷却性能,其最高温度、最大温差和压降分别减少了3.40%,35.36%和46.50%。关键词:车辆工程;电池热管理;液体冷却;相变冷却;复合相变材料;多目标粒子群优化算法中图分类号:U464.9+3;TM912文献标志码:A文章编号:1674-0696(2023)04-145-08OptimizationDesignofHeatDissipationPerformanceofLithiumBatteryCompositeThermalManagementSystemZHANGFuren,GOUHuan,LIANGBeibei,HEYanxiao,ZHUYilin(SchoolofMechatronics&Vehicleengineering,ChongqingJiaotongUniversity,Chongqing400074,China)Abstract:Aimingattheproblemofheatdissipationinlithiumbatterypack,ahybridliquidcoolingsystemcombinedwiththebifurcationliquidcoolingchannelwiththecompositephasechangematerialwasproposedanditsheatdissipationperformancewasstudiednumerically.Firstly,theheatproductionofthebatterywasobtainedthroughthechargeanddischargeexperimentofthesinglebattery.Secondly,athree-dimensionalbatterypackmodelwasestablished.Takingthenumberofcoolingchannelsatalllevelsandthethicknessofcompositephasechangematerialsasdesignvariables,theoptimalLatinsquaremethodwasusedtoconstruct44testsamplepoints.Thirdly,theapproximatemodelwasestablishedbasedontheresponsesurfacemethod?andthemulti-objectiveparticleswarmoptimizationalgorithmwasusedforoptimizationdesign.Finally,theeffectofcoolantmassflowratewasalsodiscussed.Theresultsshowthatwhent...