The aim of this study is to obtain the deflection curve equations of endplates with one to five clamping belts which allows investigating endplates deflection for uniform contact pressure distribution. Based on an equivalent mechanical model for a large fuel cell stack, the effects of the thicknesses of endplates, numbers, and positions of clamping belts are discussed, and the optimal thickness of endplate with different clamping belts is obtained, and moreover the optimal position of intermediate and outer clamping belts on the endplates. Finally, a three-dimensional finite element analysis (FEA) of a fuel cell stack clamping with steel belts and nonlinear contact elements is compared to what the equivalent mechanical beam model predicts. The result of this study shows that the equivalent mechanical model gives good prediction accuracy for the deflection behavior of endplates and the clamping force of the fuel cell stack, which is effective and helpful for the design of a large fuel cell stack assembly.

本研究的目的是获得带有 1 到 5 个夹紧带的端板的挠度曲线方程，以便研究端板挠度以实现均匀的接触压力分布。基于大型燃料电池堆的等效力学模型，讨论了端板厚度、数量和夹带位置的影响，得到了不同夹带下端板的最佳厚度，以及夹带的最佳位置。端板上的中间和外部夹紧带。最后，将使用钢带和非线性接触元件夹紧的燃料电池堆的三维有限元分析 (FEA) 与等效机械梁模型的预测进行比较。