基于COMSOL锂离子动力电池包的边界结构优化
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摘要
对于以锂离子电池作为动力来源的新型装备而言,在电池包的设计过程中需要注意散热问题。针对这一问题,通过对常规电池包的结构模型进行合理的简化,分析并选择合适的空气流场模型,用COMSOL建立计算机仿真模型;通过对电池包不同的边界结构和不同的流场环境下电池散热性能进行模拟仿真;通过对仿真结果的后处理和数据分析,发现在进风口风速相等的情况下,带有波浪形凹凸鼓包边界的电池包在强制对流散热过程中,其相比于平直边界的电池包具有单体电池之间温差小、电池周围空气平均流速较大、整体散热效果好的优点。
For the new equipment taking lithium-ion batteries as power sources,it is necessary to pay attention to the heat dissipation problem during the design process of the battery pack. Therefore,an appropriate air flow field model is analyzed and selected by conducting reasonable simplification for the structure model of the common battery pack. The computer simulation model is established by using the COMSOL. The different boundary structures of battery packs and heat dissipation performance of batteries in different flow field environments are simulated. The post-processing and data analysis of the simulation results are conducted. It is found that,when the air velocities of the inlet are equal,the battery pack with the wavy concave convex boundary has the advantages of small temperature difference between monomer batteries,large average air flow velocity around batteries,and good overall heat dissipation effect during the forced convection heat dissipation process in comparison with the battery pack with the flat straight boundary.
For the new equipment taking lithium-ion batteries as power sources,it is necessary to pay attention to the heat dissipation problem during the design process of the battery pack. Therefore,an appropriate air flow field model is analyzed and selected by conducting reasonable simplification for the structure model of the common battery pack. The computer simulation model is established by using the COMSOL. The different boundary structures of battery packs and heat dissipation performance of batteries in different flow field environments are simulated. The post-processing and data analysis of the simulation results are conducted. It is found that,when the air velocities of the inlet are equal,the battery pack with the wavy concave convex boundary has the advantages of small temperature difference between monomer batteries,large average air flow velocity around batteries,and good overall heat dissipation effect during the forced convection heat dissipation process in comparison with the battery pack with the flat straight boundary.
引文
[1]侯大鹏,杨柯,李兰清,等.车载锂离子电池组的热管理模拟[J].储能科学与技术,2017,6(6):1295-1305.HOU Dapeng,YANG Ke,LI Lanqing,et al. Thermal simulation and management of the lithium-ion battery pack[J]. Energy storage science and technology,2017,6(6):1295-1305.
[2]周一丹,陈小丹,颜认,等.混合动力汽车用电池包结构分析及改进[J].现代电子技术,2017,40(16):170-173.ZHOU Yidan,CHEN Xiaodan,YAN Ren,et al. Analysis and improvement of battery pack structure for hybrid power vehicles[J]. Modern electronics technique,2017,40(16):170-173.
[3]李秋芬.车用动力电池包的散热仿真分析[D].广州:华南理工大学,2016.LI Qiufen. Thermal simulation analysis on power battery pack of electric vehicle[D]. Guangzhou:South China University of Technology,2016.
[4]钱舜田,谢伟东.基于ANSYS的电动汽车动力电池温度场的研究[J].新技术新工艺,2013(3):25-28.QIAN Shuntian,XlE Weidong. Research on the thermal behavior of EV′s power battery based on ANSYS[J]. New technology&new process,2013(3):25-28.
[5]高松,房海涛,邹黎,等.纯电动客车氢镍动力电池包散热系统研究[J].电源技术,2015,39(12):2650-2652.GAO Song,FANG Haitao,ZOU Li,et al. Research on Ni-MH battery pack heat dissipation system of pure electric bus[J].Chinese journal of power sources,2015,39(12):2650-2652.
[6]王阳,宁国宝,郑辉.集中电机驱动纯电动汽车电池包设计[J].汽车技术,2011(7):32-35.WANG Yang,NING Guobao,ZEHNG Hui. Battery package design of central motor drive electric vehicle[J]. Automobile technology,2011(7):32-35.
[7]王东,李昌盛,杨志刚.锂离子动力电池包CFD仿真[J].计算机辅助工程,2012,21(6):1-4.WANG Dong,LI Changsheng,YANG Zhigang. CFD simulation on lithium-ion power battery pack[J]. Computer-aided engineering,2012,21(6):1-4.
[8]李国斌,崔红.流体力学与热工基础[M].北京:北京理工大学出版社,2016.LI Guobin,CUI Hong. Foundations of fluid mechanics and thermal engineering[M]. Beijing:Beijing Institute of Technology Press,2016.
[9]许超.混合动力客车电池包散热系统研究[D].上海:上海交通大学,2010.XU Chao. Research of cooling system of battery pack on hybrid electric bus[D]. Shanghai:Shanghai Jiao Tong University,2010.
[10]潘芳芳.锂离子电池正极材料LiFePO4的合成、改性以及界面研究[D].合肥:中国科学技术大学,2011.PAN Fangfang. Synthesis and optimization of LiFePO4 as cathode material for Li-ion batteries and investigation of its interface[D]. Hefei:University of Science and Technology of China,2011.
[11]徐晓明,蒋福平,田晋跃,等.基于导热胶散热的电池包热流场特性研究[J].汽车工程,2017,39(8):889-894.XU Xiaoming,JIANG Fuping,TIAN Jinyue,et al. A research on the heat flow field characteristics of battery pack based on heat conduction glue cooling[J]. Automotive engineering,2017,39(8):889-894.
[12]汤秋,王传洋,郝云,等.基于对流散热优化龙门加工中心主轴热变形[J].煤矿机械,2017,38(8):68-69.TANG Qiu,WANG Chuanyang,HAO Yun,et al. Research on impact of convection heat dissipation about temperature of main spindle on gantry machining center[J]. Coal mine machinery,2017,38(8):68-69.
[2]周一丹,陈小丹,颜认,等.混合动力汽车用电池包结构分析及改进[J].现代电子技术,2017,40(16):170-173.ZHOU Yidan,CHEN Xiaodan,YAN Ren,et al. Analysis and improvement of battery pack structure for hybrid power vehicles[J]. Modern electronics technique,2017,40(16):170-173.
[3]李秋芬.车用动力电池包的散热仿真分析[D].广州:华南理工大学,2016.LI Qiufen. Thermal simulation analysis on power battery pack of electric vehicle[D]. Guangzhou:South China University of Technology,2016.
[4]钱舜田,谢伟东.基于ANSYS的电动汽车动力电池温度场的研究[J].新技术新工艺,2013(3):25-28.QIAN Shuntian,XlE Weidong. Research on the thermal behavior of EV′s power battery based on ANSYS[J]. New technology&new process,2013(3):25-28.
[5]高松,房海涛,邹黎,等.纯电动客车氢镍动力电池包散热系统研究[J].电源技术,2015,39(12):2650-2652.GAO Song,FANG Haitao,ZOU Li,et al. Research on Ni-MH battery pack heat dissipation system of pure electric bus[J].Chinese journal of power sources,2015,39(12):2650-2652.
[6]王阳,宁国宝,郑辉.集中电机驱动纯电动汽车电池包设计[J].汽车技术,2011(7):32-35.WANG Yang,NING Guobao,ZEHNG Hui. Battery package design of central motor drive electric vehicle[J]. Automobile technology,2011(7):32-35.
[7]王东,李昌盛,杨志刚.锂离子动力电池包CFD仿真[J].计算机辅助工程,2012,21(6):1-4.WANG Dong,LI Changsheng,YANG Zhigang. CFD simulation on lithium-ion power battery pack[J]. Computer-aided engineering,2012,21(6):1-4.
[8]李国斌,崔红.流体力学与热工基础[M].北京:北京理工大学出版社,2016.LI Guobin,CUI Hong. Foundations of fluid mechanics and thermal engineering[M]. Beijing:Beijing Institute of Technology Press,2016.
[9]许超.混合动力客车电池包散热系统研究[D].上海:上海交通大学,2010.XU Chao. Research of cooling system of battery pack on hybrid electric bus[D]. Shanghai:Shanghai Jiao Tong University,2010.
[10]潘芳芳.锂离子电池正极材料LiFePO4的合成、改性以及界面研究[D].合肥:中国科学技术大学,2011.PAN Fangfang. Synthesis and optimization of LiFePO4 as cathode material for Li-ion batteries and investigation of its interface[D]. Hefei:University of Science and Technology of China,2011.
[11]徐晓明,蒋福平,田晋跃,等.基于导热胶散热的电池包热流场特性研究[J].汽车工程,2017,39(8):889-894.XU Xiaoming,JIANG Fuping,TIAN Jinyue,et al. A research on the heat flow field characteristics of battery pack based on heat conduction glue cooling[J]. Automotive engineering,2017,39(8):889-894.
[12]汤秋,王传洋,郝云,等.基于对流散热优化龙门加工中心主轴热变形[J].煤矿机械,2017,38(8):68-69.TANG Qiu,WANG Chuanyang,HAO Yun,et al. Research on impact of convection heat dissipation about temperature of main spindle on gantry machining center[J]. Coal mine machinery,2017,38(8):68-69.