Battery thermal management system by employing different phase change materials with SWCNT nanoparticles to obtain better battery cooling performance

作者：Jiaxuan Ren, Rassol Hamed Rasheed, Mohsen Bagheritabar, Hadeel Kareem Abdul-Redha, Mohammed Al‐Bahrani, Sandeep Singh, Soheil Salahshour, Davood Toghraie · 发表于：Case Studies in Thermal Engineering · 年份：2024 · DOI：10.1016/j.csite.2024.104987 · 被引用次数：32 · 研究领域：Advanced Battery Technologies Research、Advanced Battery Materials and Technologies、Advancements in Battery Materials

Maintaining a stable temperature within a battery is essential for optimizing the performance of battery thermal management systems. Phase change materials (PCMs) have demonstrated potential in achieving this stability. This study investigates the use of single-walled carbon nanotubes (SWCNTs) dispersed in three PCMs with varying fusion temperatures to regulate the temperature of a lithium-ion battery (LIB) during discharge, a common scenario in electric vehicles. A Computational Fluid Dynamics (CFD) approach was utilized to simulate the liquid-solid transition of the PCMs, incorporating buoyancy forces in the liquid phase surrounding the LIB. The study examined the effects of different C-rates (1, 2, and 3), SWCNT volume fractions (0, 2, and 4 %), and three types of PCMs (RT27, RT35, and RT58) across multiple simulation scenarios to evaluate their impacts on LIB temperature and PCM melting fraction. Results indicate that nano-enhanced PCMs, which exhibit superior convection effects in the liquid phase, significantly enhance battery cooling performance. Specifically, at a C-rate of 1, using a 4 % volume fraction of nanoparticles in the PCM reduces the battery temperature by an average of 4.138 K compared to cases without nanoparticles. Additionally, while nanoparticles are generally reported to have a minor effect on cooling and melting processes, this study reveals that considering the beneficial effects of SWCNTs and the physical properties of the selected PCMs, the cooling...