改善镍氢动力电池包温度均匀性的研究  

Research on Improvement of the Temperature Uniformity in the Ni-Mh Power Battery Pack

作　　者：戴峰[1,2] 倪培永 朱建新[2,3] 储爱华 DAI Feng;NI Pei-yong;ZHU Jian-xin;CHU Ai-hua(SchoolofMechanical Engineering,Nantong University,Jiangsu Nantong 226019,China;Corun Hybrid Technology Co. Ltd., Shanghai 201540,China;Institute of Automotive Electronic Technology,Shanghai Jiaotong University,Shanghai 200240, China)

机构地区：[1]南通大学机械工程学院,江苏南通226019 [2]科力远混合动力技术有限公司,上海201540 [3]上海交通大学汽车电子技术研究所,上海200240

出　　处：《机械设计与制造》2019年第5期175-177,181,共4页Machinery Design & Manufacture

基　　金：江苏省优势学科建设项目;国家863计划(2011AA11A201);国家科技支撑计划项目(2011BAG02B10)

摘　　要：新能源汽车电池包内温度不均匀严重影响动力电池的电化学性能、循环寿命、安全性和使用可靠性,将电池包内温差控制在5℃内对上述关键技术问题的解决至关重要。文章主要通过UG软件绘制电池包三维几何模型,使用CFX软件对温度场进行仿真模拟,并通过试验进行验证。仿真结果表明,原方案中电池包内最大温差为12.7℃;优化方案1包内的最大温差为7.5℃;优化方案2的最大温差6.5℃;优化方案3最大温差4.3℃。试验结果表明,原方案最大温差为12℃;优化方案3最大温差为5℃。计算得原方案温差的试验与仿真结果相似度为94.5%,优化方案3的相似度为86%。综合考虑,优化方案3的结构设计符合要求。The electrochemical properties,cycle life,safety and serviceability of the power battery are seriously affected by the temperature uniformity of battery pack. It is crucial to control the temperature difference within 5℃.Firstly,the 3D simulation model was drawn by designer. Secondly,we can use the CFX to simulate the temperature field. In the last,we can use the experiments to validate the simulation.The simulation results show that the maximum temperature difference is 12.7℃ in the original project. The maximum temperature difference of the improvement approach 1 is 7.5℃;The maximum temperature difference of the improvement approach 2 is 6.5℃;The maximum temperature difference of the improvement approach 3 is 4.3℃.The experiment results show that the biggest difference of temperature is 12℃ in the original project.The maximum temperature difference of the improvement approach 3 is 5℃. The similarity of the temperature difference is 94.5% between the experiment and simulation in the original project and the similarity is 86% in the improvement approach 3.Overall consideration,the design of the improvement approach 3 meets the design requirements.

关 键 词：新能源汽车 电池包 温度均匀性 温度场 仿真 

分 类 号：TH16[机械工程—机械制造及自动化] U463.6[机械工程—车辆工程]