Development and Analysis of a New Cylindrical Lithium-Ion Battery Thermal Management System  

作　　者：Yasong Sun Ruihuai Bai Jing Ma 

机构地区：[1]School of Power and Energy,Northwestern Polytechnical University,Xi’an 710072,China [2]Center of Computational Physics and Energy Science,Yangtze River Delta Research Institute of NPU,Northwestern Polytechnical University,Taicang 215400,China [3]School of Automobile,Chang’an University,Xi’an 710064,China

出　　处：《Chinese Journal of Mechanical Engineering》2022年第4期298-312,共15页中国机械工程学报（英文版）

基　　金：Supported by National Natural Science Foundation of China(Grant Nos.51976173,51976014);Jiangsu Provincial Natural Science Foundation of China(Grant No.BK20201204);Basic Research Program of Taicang(Grant No.TC2019JC01).

摘　　要：With the development of modern technology and economy,environmental protection and sustainable development have become the focus of global attention.The promotion and development of electric vehicles(EVs)have bright prospects.However,many challenges need to be faced seriously.Under diferent operating conditions,various safety problems of electric vehicles emerge one after another,especially the hidden danger of battery overheating which threatens the performance of electric vehicles.This paper aims to design and optimize a new indirect liquid cooling system for cylindrical lithium-ion batteries.Various design schemes for diferent cooling channel structures and cooling liquid inlet directions are proposed,and the corresponding solid-fuid coupling model is established.COMSOL Multiphysics simulation software is adopted to simulate and analyze the cooling systems.An approximate model is constructed using the Kriging method,which is considered to optimize the battery cooling system and improve the optimization results.Sensitivity parameter analysis and the optimization design of system structure are performed through a set of infuencing factors in the battery thermal management.The results indicate that the method used in this paper can efectively reduce the maximum core temperature and balance the temperature diferences of the battery pack.Compared with the original design,the optimized design,which is based on the non-dominated sorting genetic algorithm(NSGA-II),has an excellent ability in the optimized thermal management system to dissipate thermal energy and keep the overall cooling uniformity of the battery and thermal management system.Furthermore,the optimized system can also prevent thermal runaway propagation under thermal abuse conditions.In summary,this research can provide some practical suggestions and ideas for the engineering and production applications and structural optimization design carried by electric vehicles.

关 键 词：Cooling system Electric vehicle Kriging approximation Numerical simulation 

分 类 号：TM912[电气工程—电力电子与电力传动]