基于孔隙网络模型的电池热管理系统跨尺度分析  

Pore-network model for multiscale analyses of battery thermal management systems

作　　者：王屹航 杨元凯 刘通[2] 王沫然[2] WANG Yihang;YANG Yuankai;LIU Tong;WANG Moran(Construction and Campus Planning Office,Tsinghua University,Beijing 100084,China;Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Department of Engineering Mechanics,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学基建规划处,北京100084 [2]清华大学工程力学系,热科学与动力工程教育部重点实验室,北京100084

出　　处：《清华大学学报（自然科学版）》2021年第2期170-176,共7页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金资助项目(U1837602);清华大学自主科研项目。

摘　　要：针对电池热管理系统进行跨尺度分析以提高电池安全性是当前产业界的迫切需求。该文将电池组类比为多孔介质,将电池热管理系统优化等效为多孔介质对流换热过程,采用具有计算高效、多物理场耦合能力强等优势的孔隙网络模型对实际电池热管理系统进行了多尺度分析。该方法在进行准确性验证后,可以有效建立电池单体与电池组整体之间的信息交互,并搭建电池热管理系统分析的跨尺度桥梁。该方法基于不同尺度下多孔介质流动和传热过程,为未来跨尺度方法的工程应用打下基础。Industry urgently needs multiscale analyses of battery thermal management systems to improve battery safety.Battery packs are modeled here as porous media to optimize the battery thermal management system as a convective heat transfer process in a porous media.The pore-network model is efficient and strongly couples the multiple physical fields.The pore-network model is then used for multiscale analyses of battery thermal management systems.The validated pore-network model can then be used to relate the thermal characteristics of a single battery to the whole battery pack for multi-scale analyses of battery thermal management systems.The pore-network model is based on the flow and heat transfer processes in porous media at different scales and provides a foundation for future multi-scale engineering application.

关 键 词：热管理 热分析 孔隙网络模型 跨尺度分析 

分 类 号：TL331[核科学技术—核技术及应用]