基于仿蜘蛛网流道结构设计的圆柱形锂电池热管理系统性能研究  

Performance Study of Cylindrical Lithium Battery Thermal Management System Based on the Design of Spider Web-like Flow Channel Structure

作　　者：汪朝晖[1,2,3] 熊肖 高全杰 范益伟 WANG Zhaohui;XIONG Xiao;GAO Quanjie;FAN Yiwei(Key Laboratory of Metallurgical Equipment and Control Technology of Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081;Hubei Longzhong Laboratory,Wuhan University of Technology Xiangyang Demonstration Zone,Xiangyang 441000)

机构地区：[1]武汉科技大学冶金装备及其控制教育部重点实验室,武汉430081 [2]武汉科技大学机械传动与制造工程湖北省重点实验室,武汉430081 [3]武汉理工大学襄阳示范区湖北隆中实验室,襄阳441000

出　　处：《机械工程学报》2023年第22期150-162,共13页Journal of Mechanical Engineering

基　　金：国家自然科学基金(51875419);湖北隆中实验室自由创新(2022ZZ-14)资助项目。

摘　　要：电池热管理系统安全设计是保持电池模组最佳工作温度范围及均匀温度分布的重要保障。利用蜘蛛网几何结构特征,设计一种含仿生流道结构的电池热管理系统应用于圆柱形锂离子电池模组。建立电池模组的计算流体动力学模型,研究不同流道结构参数和进口速度对热管理系统散热性能的影响。研究结果表明,仿生流道结构高度是影响电池热管理系统冷却性能与功耗的最大因素,当进口速度为0.4 g/s时,在2C放电速率下,计算得到的最佳结构参数能保持电池最高温度、最大温差和进出口压降分别为302.972 K,3.858 K和22.75 Pa。仿蜘蛛网结构热管理系统能有效降低电子水泵的功耗,有利于电动汽车长时间的续航,它的进出口压降在相同流道结构参数下较仿蜂窝结构降低了60%以上。The safety design of battery thermal management system is an important guarantee to keep the best working temperature range and uniform temperature distribution of battery module.Based on the geometrical structure characteristics of spider web,a battery thermal management system with bionic flow channel structure is designed and applied to cylindrical lithium battery module.The computational fluid dynamics model of the battery module is established,and the influence of different flow channel structure parameters and inlet velocity on the thermal performance of the thermal management system is investigated.The results show that the height of the flow channel structure is the most important factor affecting the thermal performance of the battery thermal management system.At an inlet rate of 0.4 g/s and at a discharge rate of 2C,the optimum structural parameters are calculated to maintain the maximum battery temperature,maximum temperature difference and pressure drop at 302.972 K,3.858 K and 22.75 Pa,respectively.The spider web-like structure of the thermal management system can effectively reduce the power consumption of the electronic water pump,which is beneficial to the long range of electric vehicles,and its pressure drop is reduced by more than 60%compared to the honeycomb-like structure for the same flow channel structure parameters.

关 键 词：电池热管理系统 锂离子电池 蜘蛛网结构 仿生结构 

分 类 号：TM912[电气工程—电力电子与电力传动]