Role of Phase Change Materials in Examining the Discharge Behavior of Li-Ion Batteries Using ANSYS Fluent

Abstract

The emergence of lithium-ion batteries (LIBs) presents a promising solution, yet they come with an inherent challenge of thermal overrun due to rapid charge−discharge cycles. An effective thermal management (TM) strategy is essential to addressing these issues. This study focuses on improving the temperature performance of phase change material (PCM-encased solid-state LIBs (SLIBs) by employing the NTGK module and integrating it into ANSYS Fluent, to assess the discharge behavior of LIBs. Additionally, a comparative analysis of two outperforming LCO/LAGP/G, and LFP/LLZO/Li cell combinations, was examined. The LCO/LAGP/G combination exhibited a 1.8 and 0.68% temperature reduction in capric acid and paraffin wax, whereas the LFP/LLZO/Li configuration showed a 2.7% reduction in capric acid and a 1.45% reduction in paraffin wax respectively.