滤板在车辆电池组风冷散热中的应用
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摘要
针对某电动车辆拟使用的动力锂电池组进行散热优化,在已经证明添加滤板可以对电池组系统散热效果和均衡性都有提升后,为了进一步优化散热效果,改善动力电池组使用风冷散热方式时散热效果差、平均温度高、局部最高温度高、局部温差较大的问题,针对某电动车辆拟用的动力锂电池组风冷散热系统通过三维建模后使用ANSYS、Icepak进行了热力学仿真。根据仿真结果的反馈,调整滤板不同区域的开孔率,使高温处开孔率升高,低温处开孔率降低,温度分布更均匀,且平均温度也更低。为风冷电池组散热系统优化设计提供了有价值的参考。
Be aimed at improving the thermal attribute of the lithium ion power battery pack in one designing electric vehicle. It is proved that it can work better when using grill in the battery cooling system. By a large number of thermodynamic simulation with ANSYS, Icepak after three-dimensional modeling, the results show that change the free areas ratio in different areas can make the cooling result better. This thesis provides a valuable reference for cooling system of battery.
Be aimed at improving the thermal attribute of the lithium ion power battery pack in one designing electric vehicle. It is proved that it can work better when using grill in the battery cooling system. By a large number of thermodynamic simulation with ANSYS, Icepak after three-dimensional modeling, the results show that change the free areas ratio in different areas can make the cooling result better. This thesis provides a valuable reference for cooling system of battery.
引文
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[2]郑明森,金明钢,董全峰,等. LiMn2O4在聚合物锂离子蓄电池中的高温性能[J].电源技术,2003,27:166-168.
[3]谢晓华,解晶莹,夏保佳.锂离子电池低温充放电性能的研究[J].化学世界,2008(10):581-583.
[4]曾令杰.锂离子电池LiFePO4/C正极材料低温性能研究[D].上海:上海交通大学,2011.
[5] SACO N. Thermal behavior analysis of lithium-ion batteries for electric and hybrid vehicles[J].Journal of Power Sources, 2001, 99:70-77.
[6]唐致远,陈玉红.锂离子力电池安全性的研究[J].锂动力电池,2006,36(1):74-76.
[7]陈玉红,唐致远,卢星河,等.锂离子电池爆炸机理研究[J].化学进展,2006(6):823-831.
[8]车杜兰.电动汽车锂离子电池包热特性研究与优化设计[D].武汉:武汉理工大学,2009.
[9]陈全世.先进电动汽车技术[M].北京:化学工业出版社,2007.
[10] BERNADI D, PAWLIKOWSIKI E, NEWMAN J T. A general energy balance for battery system[J].J Electrochem Soc, 1985,132:5-12.