摘要
为了控制磷酸铁锂电池包内的温度场,提高其安全性、寿命及功率性能,设计了一款适合工程化应用的新型液冷电池包,该电池包在设计工况下的峰值温度小于45℃,最大温差小于5℃.采用仿真与试验相结合的方法,通过热仿真确定设计方案的峰值温度满足要求,同时发现模组两端的电芯散热过强是导致电池包内温差较大的主要原因.基于分析结果提出多种改进方案,综合考虑温度场和结构的优劣性选择最佳改进方案,并通过试验验证仿真模型和设计方案的可行性.根据研究结果总结导致电池包产生温差的原因及有利于降低温差的热管理方案,为进一步研究高性能液冷电池包提供新的思路.
In order to control the temperature field of the Li FePO_(4) battery pack and improve its safety,lifetime,and power performance,this paper provides a new scheme for the liquid-cooling battery pack suitable for engineering applications.Under the design condition,the peak temperature of the battery is less than 45℃,and the maximum temperature difference of the battery is less than 5℃.The research adopts the method of combining simulation and experiment.Firstly,the result of thermal simulation confirms that the peak temperature meets the requirements,and shows that the strong heat dissipation of cells at both ends of the module is the main reason for the big temperature difference.Then,this paper proposes a variety of solutions that are based on the analysis results,and selects the best solution by considering the advantages and disadvantages of the temperature field and the structure.The experiment demonstrates that the simulation model is reliable and this solution is feasible.Finally,this paper,based on research results,summarizes the reasons for the temperature difference of liquid-cooling batteries and the thermal management scheme for reducing temperature difference,which provides new ideas for further researches on high-performance liquid cooling battery packs.
作者
朱慧东
李岳林
汤桃峰
ZHU Huidong;LI Yuelin;TANG Taofeng(College of Mechanical and Vehicle Engineering,Changsha University of Science and Technology,Changsha 410076,China;Jiangling Motors Co.,Ltd.,Nanchang 330052,China)
出处
《湖南科技大学学报(自然科学版)》
北大核心
2025年第2期52-58,共7页
Journal of Hunan University of Science And Technology:Natural Science Edition
关键词
电池
磷酸铁锂
液冷
热管理
热仿真
battery
LiFePO_(4)
liquid cooling
thermal management
thermal simulation
