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作 者:郭雪莹 刘家豪 杨满江[2] 李贤斌 GUO Xueying;LIU Jiahao;YANG Manjiang;LI Xianbin(Marine Science and Engineering College,Shanghai Maritime University,Shanghai 201306,China;China Ship Development and Design Center,Wuhan Hubei 430064,China;Jinshan District Tinglin Town Urban Operation Comprehensive Office,Shanghai 201505,China)
机构地区:[1]上海海事大学海洋科学与工程学院,上海201306 [2]中国舰船研究设计中心,湖北武汉430064 [3]金山区亭林镇城市运行综合办公室,上海201505
出 处:《电源技术》2022年第12期1378-1382,共5页Chinese Journal of Power Sources
基 金:国家自然科学基金(51909152);火灾科学国家重点实验室开放课题(HZ2021-KF07)。
摘 要:为了提高基于相变材料(PCM)的锂电池热管理系统(BTMS)的散热效率,采用Fluent数值模拟方法,以18650锂离子电池(LIB)为研究对象,设计了一种新型分叉翅片强化散热系统,研究了分叉翅片(类X形,类Y形)的分叉角(q)对热管理效果的影响。在25℃下,采用三种放电倍率(1 C/2 C/3 C)对无PCM,仅PCM,PCM和翅片结合的电池系统进行三维瞬态仿真。通过模拟的温度分布图和相变材料液相率可以看出,分叉翅片有效降低了电池表面的温度,并且使BTMS的温度分布更均匀。结果显示:(1)相同分叉角下,类X形翅片散热效果优于类Y形翅片;(2)相同形状的翅片,分叉角越大,散热效果越好。在2 C、3 C的放电倍率,分叉角150°时,与仅PCM系统相比,LIB表面最大温升可分别降低约15.62%,22.22%,充分证明了分叉翅片的有效性。A novel bifurcated fin was designed to enhance the battery thermal management system(BTMS)of 18650 lithium-ion battery(LIB)based on phase change materials(PCM)by using Fluent software.The effect of the bifurcation angle(q)of the fin(X-shape,Y-shape)on the thermal management was investigated.At 25℃,three kinds of discharge rates(1 C/2 C/3 C)were used to simulate the battery system without PCM,pure PCM,PCM-fin.From the temperature distribution and the liquid phase ratio,it can be seen that the bifurcated fins can effectively reduce the temperature of the battery.The results show that:(1)under the same q,the X-shaped fins are better than the Yshaped ones;(2)for the fins of the same shape,the larger the q,the better the heat dissipation effect,which further improves the heat dissipation capacity.At the discharge rates of 2 C and 3 C and the q of 150°,compared with pure PCM system,the maximum temperature rise of LIB surface can be reduced by 15.62%and 22.22%,respectively,demonstrating the effective heat dissipation of the bifurcated fins.
分 类 号:TM912.9[电气工程—电力电子与电力传动]
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