Energy Storage Science and Technology ›› 2022, Vol. 11 ›› Issue (8): 2526-2536.doi: 10.19799/j.cnki.2095-4239.2022.0111

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Analysis method based on porous medium modeling for thermal management system of large capacity battery energy storage

Mingfei LI1(), Mumin RAO1, Wanmei SUN1, Shuxin CUI2, Wei CHEN2()   

  1. 1.Guangdong Energy Group Science and Technology Research Institute Co. , Ltd. , Guangzhou 510630, Guangdong, China
    2.School of aeronautics and astronautics, Sichuan University, Chengdu 610065, Sichuan, China
  • Received:2022-03-04 Revised:2022-05-10 Online:2022-08-05 Published:2022-08-03
  • Contact: Wei CHEN E-mail:limingfei@geg.com.cn;chenwei2017@scu.edu.cn

Abstract:

The thermal management system is a key technology for maintaining the performance and service life of battery energy storage devices. It is difficult to perform a comprehensive numerical analysis of the entire thermal management system due to the numerous battery cells and the complex internal structures of large-capacity battery energy storage devices. This study proposes a porous medium modeling method for battery modules, and a conjugate heat transfer numerical analysis for the air-cooled thermal management system of MW-scale containerized battery energy storage is performed. The research shows that the method can simulate the flow and heat transfer in the battery energy storage cabin and the battery module simultaneously, resulting in more detailed and accurate flow and heat transfer characteristics. The temperature distribution difference between the battery modules and the cells in modules is caused by two main factors. The first is the uneven distribution of airflow in battery modules, while the second is the flow and heat transfer characteristics formed by the airflow and heat accumulation in the battery energy storage cabin. This study's proposed analysis method could provide technical support for the design and optimization of thermal management systems in large-capacity centralized battery energy storage.

Key words: battery energy storage, thermal management system, porous medium modeling, flow and heat transfer, numerical analysis

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