动力电池应急冷却喷管结构设计分析  

Analysis on nozzle design of power battery emergency cooling

作　　者：高青[1,2] 王浩东 刘玉彬 陈宇 GAO Qing;WANG Hao-dong;LIU Yu-bin;CHEN Yu(State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130022,China;College of Automotive Engineering,Jilin University,Changchun 130022,China)

机构地区：[1]吉林大学汽车仿真与控制国家重点实验室,长春130022 [2]吉林大学汽车工程学院,长春130022

出　　处：《吉林大学学报（工学版）》2022年第5期981-989,共9页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(U1864213);吉林省高技术产业发展专项项目(2016C022);长春市科技计划重大科技创新“双十工程”项目(17SS022);吉林省科技厅青年人才基金项目(20180520066JH)。

摘　　要：针对动力电池的应急热管理需求,对动力电池应急热管理系统喷管结构进行设计研究,分别探究喷孔直径、喷孔夹角、喷管形式对系统的冷却能力的影响。实验结果表明:相比于其他喷孔直径的喷管,喷孔直径2 mm的喷管具有最佳的冷却能力;随着喷孔夹角度数的增加,冷却过程中电池模组的温均性增加,应急热管理系统的冷却能力减弱;相比于等直径喷管和非等直径喷管,歧管具有更强的冷却能力和换热效率,数秒内降温幅度可达50℃,是动力电池应急热管理系统的优选。Aiming at the emergency thermal management needs of power batteries,the nozzle structure of power battery emergency thermal management system was designed in this paper,the impact of orifice diameter,angle of orifices and nozzle type on the cooling capacity of the system were investigated.Results show that compared with other nozzles,the nozzle with 2 mm orifice has the best cooling capacity;with the increase of orifice angle,the temperature uniformity of the battery module increases,but the cooling capacity of the system decreases;compared with other types of nozzles,the manifold has better cooling capacity and heat exchange efficiency during the cooling process,and the temperature drop of battery module can be50℃in seconds,making it a good choice for power battery emergency thermal management system.

关 键 词：车辆工程 热失控 应急热管理 喷射冷却 歧管 

分 类 号：U469[机械工程—车辆工程]