摘要
针对采用通风冷却结构的电池箱冷却效果不理想的问题,提出了一种基于有限元电池模型的动力电池箱热分析方法,在此基础上,以某种结构的锂离子动力电池箱作为研究对象,对入风口风速和风道尺寸等电池箱温升影响因素进行分析。仿真结果表明,随着风速增加电池箱的温度均匀性得到了改善,当风速为5 m/s时,电池温度标准差范围在1.0～1.7之间。当风道宽度尺寸为12 mm且风速为5 m/s时,电池温升的最大值为7.3℃,电池温升的最小值为5.4℃,电池平均温度标准差为1.47,电池组工作控制在合理的温度范围内,电池组温度分布均匀性最好。
In consideration of the unsatisfactory cooling effect of battery box used in the ventilation cooling structure,a thermal analysis method for power battery box is proposed based on the finite element model of battery.On this basis,a li-ion power battery box with a certain structure is chosen as the research object,and the influence factors of temperature rise for battery box including wind speed of inlet and air duct size are analyzed.Simulation results show that the uniformity in battery box temperature is improved along with the increase of wind speed.When the wind speed is 5 m/s,the standard deviation of battery temperature is between 1.0 and 1.7.When the air duct size is 12 mm and wind speed is 5 m/s,the maximum and minimum temperature rises are 7.3 ℃ and 5.4 ℃,respectively,and the standard deviation of average temperature is 1.47; the battery pack can be controlled to work in a normal temperature range,and the uniformity in battery pack temperature distribution is the best.
作者
韩静
吴晓刚
孙金磊
HAN Jing;WU Xiaogang;SUN Jinlei(School of Electrical and Electronic Engineering, Harbin University of Science and Technology, Harbin 150080, China;State Key Laboratory of Power Transmission Equipment and System Security and New Technology,Chongqing University, Chongqing 400044, China;School of Automation, Nanjing University of Science and Technology, Nanjing 210094, China)
出处
《电源学报》
CSCD
北大核心
2019年第1期120-127,144,共9页
Journal of Power Supply
基金
输配电装备及系统安全与新技术国家重点实验室访问学者资助项目(2007DA10512716416)
哈尔滨理工大学青年拔尖创新人才培养计划资助项目(201503)~~
关键词
电动汽车
电池箱
风道尺寸
空气冷却
electric vehicle
battery box
air duct size
air cooling
作者简介
韩静(1990-),女,硕士研究生,研究方向:动力电池组热分析,E-mail:hanjing123@hrbust.edu.cn;通信作者:吴晓刚(1981-),男,博士,教授,研究方向:电动汽车能源系统管理及能量分配优化,E-mail:xgwu@hrbust.edu.cn;孙金磊(1985-),男,博士,讲师,研究方向:动力电池管理,E-mail:jinlei.sun@hotmail.com。
