汇流排对电池模组温度与电流均衡性的影响分析和实验研究
|
摘要
对某电动汽车电池模组的发热特性进行了热电耦合数值计算,研究了放电倍率、电流进出方式、汇流排接触面积和电流进出位置等对电池模组温度场和电流密度的影响。结果表明:电流放电倍率对温升和汇流排与电池之间的热交换影响较大,高倍率电流充放工况下电池发热分析应该考虑汇流排电热效应的影响。采用电池充放电测试系统对电池模组在不同放电倍率电流工况下的温升情况进行实验研究,在28.5℃的环境温度下,测得最大温升与热电耦合数值计算结果基本一致,说明了数值模拟可很好预测汇流排的温升特性。
A thermo-electric coupling numerical calculation on the heat generation characteristics of the battery module in an electric vehicle is conducted to study the effects of discharge rate, current I/O mode, bus-bar contact area and current I/O position on the current density and the temperature field of battery module. The results show that the discharge rate significantly affects the temperature rise and the heat exchange between bus-bar and cell, thus the analysis on battery heat generation in high current rate charge/discharge conditions should take the electro-thermal effects of bus-bar into consideration. An experimental study on the temperature rise in battery module under different discharge rates is carried out by using battery charge/discharge testing system and under an ambient temperature of 28.5℃, the highest temperature rise measured is basically consistent with the result of thermo-electric coupling numerical calculation, demonstrating that numerical simulation can well predict the temperature rise characteristics of bus-bar.
A thermo-electric coupling numerical calculation on the heat generation characteristics of the battery module in an electric vehicle is conducted to study the effects of discharge rate, current I/O mode, bus-bar contact area and current I/O position on the current density and the temperature field of battery module. The results show that the discharge rate significantly affects the temperature rise and the heat exchange between bus-bar and cell, thus the analysis on battery heat generation in high current rate charge/discharge conditions should take the electro-thermal effects of bus-bar into consideration. An experimental study on the temperature rise in battery module under different discharge rates is carried out by using battery charge/discharge testing system and under an ambient temperature of 28.5℃, the highest temperature rise measured is basically consistent with the result of thermo-electric coupling numerical calculation, demonstrating that numerical simulation can well predict the temperature rise characteristics of bus-bar.
引文
[1] 李军求,吴朴恩,张承宁.电动汽车动力电池热管理技术的研究与实现[J].汽车工程,2016,38(1):22-27.
[2] HE Fan, WANG Haoting, MA Lin. Experimental demonstration of active thermal control of a battery module consisting of multiple Li-ion cells[J]. International Journal of Heat and Mass Transfer,2015,91(12):630-639.
[3] CHOW T P, BALIGA B J, et al. A self-aligned short process for IGBT[J]. IEEE Transactions on ED,2012(6):1317-1320.
[4] 吴友宇,梁红.电动汽车动力电池均衡方法研究[J].汽车工程,2004,26(4):382-385.
[5] PIRONDI A, NICOLETTO G, COVA P, et al. Thermo-mechanical finite element analysis in press-packed IGBT design[J]. Microelectronics Reliability,2008(40):1163-1172.
[6] 焦亚田,谢长君,汤泽波,等.电动汽车锂电池组高效主动均衡的研究与测试[J].汽车工程,2017,39(8):858-863.
[7] 余剑武,范光辉,雷吉平,等.动力电池组汇流排过载能力及电流均衡性影响因素研究[J].中国机械工程,2017,28(20):2426-2433.
[8] ABDUL-QUADIR Y, LAURILA T, KARPPINEN J, et al. Heat generation in high power prismatic Li-ion battery cell with LiMnNiCoO2 cathode material[J]. International Journal of Energy Research,2014,38(11):1424-1437.
[9] LIN Chunjing, XU Sichuan, LI Zhao. Thermal analysis of large-capacity LiFePO4 power batteries for electric vehicles[J]. Journal of Power Sources,2015,294(10):633-642.
[10] TROXLER Y, WU B, MARINESCU M, et al. The effect of thermal gradients on the performance of lithium-ion batteries[J]. Journal of Power Sources,2014,247(2):1018-1025.
[11] 罗玉涛,罗卜尔思,郎春艳.锂离子动力电池组的直接接触液体冷却方法研究[J].汽车工程,2016,38(7):909-914.
[12] SAUVEPLANE J B, TOUNSI P, SCHEID E, et al. 3D electrothermal investigations for reliability of ultralow on state resistance power mosfet[J]. Microelectronics Reliability,2008(48):1464-1467.
[13] 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.
[14] BAI X, WEI H. Semi-definite programming-based method for security-constrained unit commitment with operational and optimal power flow constraints[J]. IET Generation Transmission & Distribution,2009,3(2):182-197.
[15] DUAN X, NATERER G F. Heat transfer in phase change materials for thermal management of electric vehicle battery modules[J]. International Journal of Heat Mass Trans,2010,53:5176-5182.
[16] 张进,宣益民.基于光-热-电耦合利用的薄膜热电器件结构优化[J].工程热物理学报,2016(3):643-647.
[17] 陈魁.试验设计与分析[M].北京:清华大学出版社,2005:97-100.
[2] HE Fan, WANG Haoting, MA Lin. Experimental demonstration of active thermal control of a battery module consisting of multiple Li-ion cells[J]. International Journal of Heat and Mass Transfer,2015,91(12):630-639.
[3] CHOW T P, BALIGA B J, et al. A self-aligned short process for IGBT[J]. IEEE Transactions on ED,2012(6):1317-1320.
[4] 吴友宇,梁红.电动汽车动力电池均衡方法研究[J].汽车工程,2004,26(4):382-385.
[5] PIRONDI A, NICOLETTO G, COVA P, et al. Thermo-mechanical finite element analysis in press-packed IGBT design[J]. Microelectronics Reliability,2008(40):1163-1172.
[6] 焦亚田,谢长君,汤泽波,等.电动汽车锂电池组高效主动均衡的研究与测试[J].汽车工程,2017,39(8):858-863.
[7] 余剑武,范光辉,雷吉平,等.动力电池组汇流排过载能力及电流均衡性影响因素研究[J].中国机械工程,2017,28(20):2426-2433.
[8] ABDUL-QUADIR Y, LAURILA T, KARPPINEN J, et al. Heat generation in high power prismatic Li-ion battery cell with LiMnNiCoO2 cathode material[J]. International Journal of Energy Research,2014,38(11):1424-1437.
[9] LIN Chunjing, XU Sichuan, LI Zhao. Thermal analysis of large-capacity LiFePO4 power batteries for electric vehicles[J]. Journal of Power Sources,2015,294(10):633-642.
[10] TROXLER Y, WU B, MARINESCU M, et al. The effect of thermal gradients on the performance of lithium-ion batteries[J]. Journal of Power Sources,2014,247(2):1018-1025.
[11] 罗玉涛,罗卜尔思,郎春艳.锂离子动力电池组的直接接触液体冷却方法研究[J].汽车工程,2016,38(7):909-914.
[12] SAUVEPLANE J B, TOUNSI P, SCHEID E, et al. 3D electrothermal investigations for reliability of ultralow on state resistance power mosfet[J]. Microelectronics Reliability,2008(48):1464-1467.
[13] 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.
[14] BAI X, WEI H. Semi-definite programming-based method for security-constrained unit commitment with operational and optimal power flow constraints[J]. IET Generation Transmission & Distribution,2009,3(2):182-197.
[15] DUAN X, NATERER G F. Heat transfer in phase change materials for thermal management of electric vehicle battery modules[J]. International Journal of Heat Mass Trans,2010,53:5176-5182.
[16] 张进,宣益民.基于光-热-电耦合利用的薄膜热电器件结构优化[J].工程热物理学报,2016(3):643-647.
[17] 陈魁.试验设计与分析[M].北京:清华大学出版社,2005:97-100.