某车用锂离子动力电池组冷却系统仿真及优化  

Simulation and Optimization of a Lithium-ion Power Battery Pack Cooling System for a Vehicle

作　　者：徐志龙 朱晓琼 田玉冬[1] 吴旭陵 余万 Xu Zhilong;Zhu Xiaoqiong;Tian Yudong;Wu Xuling;Yu Wan(College of Mechanical Engineering,Univ.of Shanghai for Science&Technology,Shanghai 200093,China;Commercial Vehicle Technology Center,SAIC,Shanghai 200940,China;College of Mechanical Power Engineering,China Three Gorges Univ.,Yichang 443002,China)

机构地区：[1]上海理工大学机械工程学院,上海200093 [2]上海汽车集团股份有限公司商用车技术中心,上海200940 [3]三峡大学机械与动力学院,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2018年第6期79-83,共5页Journal of China Three Gorges University：Natural Sciences

基　　金：水电机械设备设计与维护湖北省重点实验室开放基金(2016KJX03)

摘　　要：本文研究了纯电动汽车在90km/h匀速行驶条件下锂离子电池组的温度分布,以及基于实验结果的冷却系统的实验温度分布和优化.首先,利用能量守恒定律和傅立叶导热定律,建立了电池组传热过程的简化数学模型,并利用FLUENT将其转化为有限元模型;其次,建立边界条件和负载条件,求解有限元模型,预测温度分布;再次,在电池模组水平进行热管理台架试验,得到真实的温度分布数据,与仿真结果具有较高的一致性,并根据试验数据对仿真模型进行了进一步标定,提高了有限元模型的精度;最后,经过仿真,对冷却系统进行了优化设计,以达到设计目标.This article mainly researches on simulation temperature distribution of a lithium-ion battery pack under the condition of constant speed of 90km/h,as well as experimental temperature distribution and optimization of cooling system based on experimental results.Firstly,with Energy conservation law and Fourier heat conduction law,a simplified mathematical model describing heat transfer process in the battery pack is established and converted into FEM model using FLUENT.Secondly,boundary conditions and loading conditions are set and then FEM model is solved to predict temperature distribution.Thirdly,thermal management bench tests are executed at battery pack level to obtain actual temperature distribution data which show high consistency with simulation results;and simulation model is further calibrated based on testing data to improve accuracy of the FEM model.Finally,after simulation,optimized design of cooling system is carried out to meet design targets.

关 键 词：热管理实验 冷却系统 锂离子电池组 

分 类 号：TM911[电气工程—电力电子与电力传动] U463[机械工程—车辆工程]