摘要
工作温度是影响电动汽车动力电池工作效率和安全性能的主要因素之一,对动力电池进行结构成组设计并将其工作温度控制在一定范围,是电池组热管理的核心任务。文章提出了一种新型内部气流双向循环交错排列的动力电池成组结构,设计了多种电池排列方案,并综合运用一维流体系统计算方法和三维计算流体动力学(computational fluid dynamics,CFD)仿真方法,确定了电池组最佳排列方案、合适的加热与冷却功率以及风扇正反转工作周期。计算结果表明,该方案能够满足不同工况下动力电池的工作温度范围要求,并能将单体电池最大温差控制在9℃以内。
The working temperature is one of the key factors which affect the efficiency and safety performance of electric vehicle power batteries,so the core object of battery thermal management is to control the temperature of the batteries within certain range through designing the structure of battery pack.In this paper,a new staggered layout of power batteries with interior air bidirectional circulation was presented,and multiple structure schemes of battery pack were designed.The optimum arrangement scheme of battery pack,the suitable heating and cooling power,and the appropriate positive and inverse working cycle of fan were determined by synthetically using one-dimensional fluid system calculation method and three-dimensional computational fluid dynamics(CFD)simulation tool.And the optimization results show that the scheme of power batteries can meet the temperature requirements under different working conditions,and the maximum temperature difference of batteries can be controlled within9℃.
作者
王元哲
唐志国
周嘉
刘轻轻
WANG Yuanzhe;TANG Zhiguo;ZHOU Jia;LIU Qingqing(School of Mechanical Engineering, Hefei University of Technology, Hefei 230009, China)
出处
《合肥工业大学学报（自然科学版）》
CAS
北大核心
2018年第12期1590-1594,共5页
Journal of Hefei University of Technology：Natural Science
基金
国家科技支撑计划资助项目(2014BAG06B02)
合肥市科技计划资助项目(KX201506230108)
关键词
动力电池成组
电池热管理
内部气流双向循环
热仿真
结构优化
power battery pack
battery thermal management
interior air bidirectional circulation
thermal simulation
structure optimization
