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*

doi:10.19562/j.chinasae.qcgc.2019.02.004

汽车工程 ›› 2019, Vol. 41 ›› Issue (2): 140-146.doi: 10.19562/j.chinasae.qcgc.2019.02.004

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^*

范光辉^1,2, 余剑武^1,2, 罗红^1,2, 陆岳托², 仝瑞庆²

1.湖南大学,汽车车身先进设计制造国家重点实验室,长沙 410082;
2.湖南大学机械与运载工程学院,长沙 410082

收稿日期:2017-12-25 出版日期:2019-02-25 发布日期:2019-02-25
通讯作者: 余剑武,教授,博士,E-mail:yokenbu@yahoo.com
基金资助:
国家自然科学基金(51575174)资助

Analysis and Experimental Study on the Influence of Bus-bar on the Temperature and Current Equalization of Battery Module

Fan Guanghui^1,2, Yu Jianwu^1,2, Luo Hong^1,2, Lu Yuetuo², Tong Ruiqing²

1.Hunan University, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Changsha 410082;
2.College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082

Received:2017-12-25 Online:2019-02-25 Published:2019-02-25

摘要/Abstract

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。

关键词: 汇流排, 电池模组, 电流密度, 温度场, 热电耦合

Abstract: 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

Key words: bus-bars, battery module, current density, temperature field, thermoelectric coupling

范光辉, 余剑武, 罗红, 陆岳托, 仝瑞庆. 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^*[J]. 汽车工程, 2019, 41(2): 140-146.

Fan Guanghui, Yu Jianwu, Luo Hong, Lu Yuetuo, Tong Ruiqing. Analysis and Experimental Study on the Influence of Bus-bar on the Temperature and Current Equalization of Battery Module[J]. , 2019, 41(2): 140-146.

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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^*

Analysis and Experimental Study on the Influence of Bus-bar on the Temperature and Current Equalization of Battery Module

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