基于仿生翅片结合PCM的电池热管理优化研究OA

To enhance the heat transfer between phase change material(PCM)and lithium-ion batter-ies and to optimize the fin-PCM collaborative thermal management system,a novel bionic fin in-spired by the cactus structure was designed.The thermal performance of this bionic fin structure at 5 C discharge rate was analyzed and compared with that of a traditional fin structure.The effects of the position and length of the branched fins,the arc-shaped design of the fins,the connection between arc fins,and the addition of vertical fins on the thermal performance were investigated in detail.The results show that optimizing the branched fins keeps the battery temperature at 323.97 K.The incor-poration of inner arc fins significantly enhances heat dissipation,with the optimal arc structure re-ducing the temperature by 5.23 K.Furthermore,adding connecting and vertical fins further reduces the maximum battery temperature by 0.9 K and increases the PCM melting fraction.Ultimately,the optimal fin structure controls the battery temperature at 317.84 K,demonstrating a significant im-provement in the system's heat dissipation capacity.