摘要
基于流体动力学和传热学原理,建立了电池单体对流换热的关系准则数学模型,获得了电池单体间距设计区间范围内的换热能力变化规律;提出了边界温度和流速条件对电池单体散热的影响度评价方法,结合基于电池单体间距优化仿真模型的电池单体温升和冷却空气温升及平均流速,获得了电池单体间距的较优数值。设计了某型105 Ah/7.8 kWh磷酸铁锂电池模组,计算了该型电池模组的温度场和流场,验证了电池单体温升和电池单体间温差均分布规律以及电池模组的散热性能,证明了所提出优化方法的正确性。研究结果表明,该方法对指导电化学储能电池模组的工程化设计具有一定的参考意义。
Based on the principles of fluid dynamics and heat transfer,the mathematical model of the relationship criterion of convective heat transfer of battery cells was established,and the variation law of heat transfer capacity within the design range of battery cell spacing was obtained.The evaluation method of the influence degree of boundary temperature and flow rate conditions on the heat dissipation of the battery cell was proposed.Combined with cell temperature rise,cooling air temperature rise and average velocity of cell spacing optimization simulation model,the optimal value of the battery cell spacing was obtained.At last,A 105 Ah/7.8 kWh lithium iron phosphate battery module was designed,and the temperature field and flow field of the battery module were calculated,the distribution law of the single temperature rise of the battery and the temperature difference between the battery cells and the heat dissipation performance of the battery module were verified,which proved the correctness of the optimization method proposed in this paper.The results show that the method has certain reference significance for guiding the engineering design of electrochemical energy storage battery module.
作者
祝德春
王新春
ZHU Dechun;WANG Xinchun(NARI Group Co.,Ltd.(State Grid Electric Power Research Institute Co.,Ltd.),Nanjing Jiangsu 211106,China;NARI Technology Co.,Ltd.,Nanjing Jiangsu 211106,China)
出处
《电源技术》
CAS
北大核心
2022年第5期523-527,共5页
Chinese Journal of Power Sources
基金
国家电网公司科技项目资助(5418-202040248A-0-0-00,5400-201940486A-0-0-00)
国电南瑞科技股份有限公司科技项目资助(524608190075)。
关键词
电池模组
对流换热
布局优化
影响度评价
温度场
battery pack
heat convection
topological optimization
influence evaluation
temperature field
