摘要
为提升储能电站锂离子电池系统温度一致性,从温度均匀性控制以及温差动态调控的角度出发,提出了锂离子电池风液双循环热管理系统。在中低温环境下依靠风冷调节电池温度,在高温环境下依靠风液复合冷却调节电池温度。围绕风量、风温、冷却液温度、流量等4个因素,开展仿真实验;通过一维、三维联合仿真,优化换热结构,分析温升、温均性能参数影响显著性。结果表明:在2倍额定大功率放电工况下,与传统底面冷板结构相比,本文的风液双循环系统的放电末期温差降低了18%。与100 s送风周期相比,300 s送风周期可使系统温差减少31%,即1.18℃。参数敏感因素从大到小排序为:风温、风量、冷却液温度、流量。从而,本设计改善了温差动态调控,有利于延长储能电池系统的服役寿命。
A thermal management system with dual air-liquid circulation was proposed based on the temperature homogeneity control and the dynamic temperature difference regulation to enhance the temperature uniformity in lithium-ion battery systems for energy storage power stations.The system utilized air cooling under low-to-medium temperature conditions to combined air-liquid cooling in high-temperature environments.Simulation experiments investigated 4 control parameters including the air volume,the air temperature,the coolant temperature,and the coolant flow rate.The heat exchange structure was optimized through 1D-3D co-simulations to analyzing the significance of temperature rise and the uniformity of performance parameters.The results show that under twice the rated high-power discharge,the proposed system reduces the end-of-discharge temperature difference by 18% compared to the conventional bottom cold plate structures.A 300 s air supply cycle achieves a 31% reduction in the temperature difference(of 1.18℃)versus a 100 s cycle.Parameter sensitivity decreases in the order as the air temperature,the air volume,the coolant temperature,and the coolant flow rate.Therefore,the dual air-liquid circulation design enhances dynamic temperature difference control with extending the service life of energy storage battery systems.
作者
刘金祎
王炎
庞英杰
于瑞广
牟瑞涛
卢兰光
李亚伦
王贺武
张立磊
李明明
LIU Jinyi;WANG Yan;PANG Yingjie;YU Ruiguang;MOU Ruitao;LU Languang;LI Yalun;WANG Hewu;ZHANG Lilei;LI Mingming(College of Mechanical and Automotive Engineering,Qingdao University of Science and Technology,Qingdao 266520,China;National Key Laboratory of Intelligent Green Vehicles and Transportation(formerly State Key Laboratory of Automotive Safety and Energy Conservation),Tsinghua University,Beijing 100080,China;Yantai Creating New Energy Technology Co.,LTD.,Yantai 264006,China)
出处
《汽车安全与节能学报》
北大核心
2025年第4期568-576,共9页
Journal of Automotive Safety and Energy
基金
智能绿色车辆与交通全国重点实验室开放基金(KFY2402)
国家重点研发储能专项(2022YFB2404800)。
关键词
储能电站
锂离子电池系统
电池热管理
一维、三维联合仿真
温度均匀性
energy storage power stations
lithium-ion battery systems
battery thermal management
one-dimensional/three-dimensional joint simulation
temperature uniformity
