基于液冷的锂离子电池液冷板设计及优化  

Design and Optimization of Liquid Cooling Plate for Lithium Ion Battery

作　　者：唐顺 王海[1,2] 徐曼曼 杨春来 王雷[1,2] 桂劲松 谭铁龙[4] 王向东 TANG Shun;WANG Hai;XU Manman;YANG Chunlai;WANG Lei;GUI Jingsong;TAN Tielong;WANG Xiangdong(School of Mechanical Engineering,Anhui Polytechnic University,Wuhu 241000,China;Anhui Key Laboratory of Advanced Numerical Control&Servo Technology,Wuhu 241000,China;Technical Department,Wuhu Ruilong Robot Technology Co.,Ltd,Wuhu 241000,China;Technical Department,Wuhu Kepu Intelligent Equipment Co.,Ltd,Wuhu 241000,China;Technical Department,Wuhu Magnetic Wheel Transmission Technology Co.,Ltd,Wuhu 241000,China)

机构地区：[1]安徽工程大学机械工程学院,安徽芜湖241000 [2]安徽省先进数控和伺服驱动实验室,安徽芜湖241000 [3]芜湖锐龙机器人科技公司技术部,安徽芜湖241000 [4]芜湖柯埔智能装备有限公司技术部,安徽芜湖241000 [5]芜湖磁轮传动技术有限公司技术部,安徽芜湖241000

出　　处：《安徽工程大学学报》2023年第5期29-37,共9页Journal of Anhui Polytechnic University

基　　金：安徽省高校优秀青年骨干人才国外访学研修项目(gxgwfx2021035);安徽工程大学创新团队资助(2020AJ06001);安徽工程大学-鸠江区产业协同创新专项基金项目(2022cyxtb4,2022cyxtb6,2022yxtb8)。

摘　　要：新能源汽车的快速发展对电池热管理技术提出了更加严格的要求。液体冷却方式可以有效将电池运行温度控制在一个适宜的范围,使电池获得高效的充放电能力。在常规的大平板液体通道中,对流换热能力会随着液体边界层的发展而逐步恶化,导致电池散热能力下降。因此,基于常规流道设计出内部带有鳍式结构的液体通道,此种鳍式结构会将液体边界层进行重新初始化,提高换热效率。通过与常规流道结构分析对比,发现带有鳍式结构的异向流动的双通道具有更强的散热能力。然后针对冷却液流速、液体通道的宽度以及鳍式结构的深度这3个因素进行分析,结果发现:增大冷却液流速、液体通道的宽度以及鳍式结构的深度可以提升电池散热效果,但会存在极值,需要通过合理调节以上3个参数,才能得到最佳的散热效果。The rapid development of new energy vehicles has put forward more stringent requirements for battery thermal management technology.The liquid cooling method can effectively control the battery operating temperature in a suitable range,so that the battery can obtain efficient charging and discharging capacity.In conventional large-plate liquid channels,the convective heat transfer capacity deteriorates gradually with the development of the liquid boundary layer,which leads to the decline of the heat dissipation capacity of the battery.Therefore,a liquid passage with a fin structure inside is designed based on the conventional flow passage.This fin structure will re-initialize the liquid boundary layer and improve the heat transfer efficiency.By comparing with the conventional flow channel structure,it is found that the dual channels with fin structure has stronger heat dissipation capacity.Next,the coolant flow rate,the width of the liquid channel and the depth of the fin structure are analyzed.The results show that increasing the coolant flow rate,the width of the liquid channel and the depth of the fin structure can improve the heat dissipation effect of the battery,but there will be extreme values,and the best heat dissipation effect can be obtained by reasonably adjusting the above three parameters.

关 键 词：热管理 液体冷却 鳍式结构 散热优化 

分 类 号：TM912.9[电气工程—电力电子与电力传动]