动力电池复合材料微通道结构主动液冷换热性能研究  

Investigation on Heat Dissipation Performance of Composite Microchannel Structure with Active Liquid Cooling for Power Battery

作　　者：陈勇 李东明 程安宇[3] 唐凯威 黄琼 宋政申 CHEN Yong;LI Dongming;CHENG Anyu;TANG Kaiwei;HUANG Qiong;ZHU Zhengshen(School of Vehicle Engineering,Chongqing University of Technology,Chongqing 400054,China;China Automotive Engineering Research Institute Co.,Ltd.,Chongqing 401120,China;College of Automation,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆理工大学车辆工程学院,重庆400054 [2]中国汽车工程研究院股份有限公司,重庆401120 [3]重庆邮电大学自动化学院,重庆400065

出　　处：《机床与液压》2024年第7期60-67,共8页Machine Tool & Hydraulics

基　　金：重庆市自然科学基金面上项目(CSTB2022NSCQ-MSX0323);重庆市教委科学技术研究项目(KJQN202101145);重庆理工大学研究生教育高质量发展项目(gzlcx20222123)。

摘　　要：大容量圆柱动力电池在电动汽车上的广泛应用导致电池包轻量化和热管理设计需求日益突出。以新型4680大号圆柱电池为研究对象,设计具有4种不同微通道网络(平行、分叉、蛇形和螺旋)的碳纤维增强复合材料(CFRP)圆筒散热结构,并分析微通道网络结构、冷却剂流速、微通道直径以及微通道进出口数量对其散热性能的影响规律。结果表明,在4种微通道CFRP圆筒结构中,平行网络微通道CFRP圆筒结构的整体换热性能最佳;微通道直径对CFRP圆筒散热性能的影响较小,但对泵压影响较大;二进二出CFRP散热圆筒的换热性能比一进一出圆筒换热结构具备明显优势。The wide application of large-capacity cylindrical power batteries in electric vehicles has led to an increasingly demand on lightweight and thermal management design for battery pack.In this work,the newly 4680 large cylindrical batteries were taken as research object,four kinds of carbon fiber reinforced composite material(CFRP)cylinder heat dissipation structures with four different micro-channel networks(parallel,bifurcated,serpentine and spiral)were designed,and the influences of microchannel network structure,flow rate of coolant,microchannel diameter and the number of microchannel inlets and outlets on the heat dissipation were analyzed.The results show that the overall performance of the parallel network microchannels is the best among the four kinds of CFRP cylindrical cooling structures;the microchannel diameter offers little influence on the heat dissipation performance of the cylinder structure,but has great effect on the pumping pressure;the heat dissipation performance of the CFRP cylinder with two inlets and two outlets is obviously higher than that of CFRP cylinder with one inlet and one outlet.

关 键 词：复合材料 微通道 散热结构 热学性能 圆柱电池 

分 类 号：TN305.94[电子电信—物理电子学] U465.6[一般工业技术—材料科学与工程]