电芯在高温急加缓减、铝排 CCS 组件大电流充电、高倍率快充等极端工况下会产生大量热量，传统冷却方式已经无法满足电芯在极端工况下所需的冷却功率。文章通过将高蓄热密度、高导热性的复合相变材料耦合到电池传统冷却系统当中，利用复合相变材料的储热和导热性对电池进行降温和均温。采用仿真手段研究相变材料耦合传统冷却方式的新型热管理模式对电芯在极端工况下的最高温和温差的影响，该研究为电池系统在极端工况下的热管理策略研究提供方向。

Under extreme conditions such as rapid heating and deceleration at high temperatures, high-current charging of aluminum busbar CCS modules, and high-rate fast charging, battery cells generate a large amount of heat. Traditional cooling methods can no longer meet the cooling power requirements of battery cells under extreme conditions. In this paper, high heat storage density and high thermal conductivity composite phase change materials are coupled into the traditional battery cooling system, and the heat storage and thermal conductivity of the composite phase change materials are utilized to cool and homogenize the battery. The simulation method is adopted to study the influence of a new thermal management mode that couples phase change materials with traditional cooling methods on the maximum temperature and temperature difference of battery cells under extreme working conditions. This research provides a direction for the study of thermal management strategies of battery systems under extreme working conditions.