【摘要】 借助多物理场仿真分析软件COMSOL Multiphysics构建质子交换膜燃料电池(PEMFC)的蛇形流道、鱼骨-平行组合流道、蛇形-平行组合流道、鱼骨-蛇形组合流道等四种不同组合的阴阳极异形流道双极板，计算分析不同流道结构对燃料电池性能的影响。相对于传统蛇形流道，平行-蛇形组合流道提高了10.73%的功率密度和13.82%的电流密度；鱼骨-蛇形仿生流道提高了14.98%的功率密度和21.17%的电流密度；部件表面粗糙度对鱼骨-蛇形仿生组合流道的影响相较于传统蛇形流道降低了1.18%。在仿生组合流道工况下电池功率密度和电流密度都得到了大幅度的提升，同时气体扩散和温度梯度分布更加均匀，表面粗糙度影响更小，使燃料电池的整体性能有了大幅度的提升，燃料电池的耐久性得到改善。更多还原

【Abstract】 This paper used the multiphysics simulation analysis software COMSOL Multiphysics to construct four different combinations of anode and cathode bipolar plates with serpentine flow channels, fishbone-parallel combined flow channels, serpentine-parallel combined flow channels, and fishbone-serpentine combined flow channels for proton exchange membrane fuel cells(PEMFC). The study calculated and analyzed the impact of different flow channel structures on fuel cell performance. Compared with the traditional serpentine flow channel, the parallel-serpentine combined flow channel increased the power density by 10.73% and the current density by 13.82%; the fishboneserpentine bionic flow channel increased the power density by 14.98% and the current density by 21.17%; and the impact of surface roughness on the fishbone-serpentine bionic combined flow channel was 1.18% lower than that of the traditional serpentine flow channel. Under the conditions of the bionic combined flow channels, both the power density and current density of the cell were significantly improved, gas diffusion and temperature gradient distribution were more uniform, and the effect of surface roughness was reduced. This significantly enhanced the overall performance and durability of the fuel cell.更多还原