The proton-exchange membrane fuel cell is a promising power source for automobile industry because of its zero pollution. However, its stack structure always faces increased contact resistance caused by assembly errors, leading to substantial energy loss during the working period. To enhance its output performance, the influence of assembly errors on contact resistance is studied for proton-exchange membrane fuel cell. The mechanical simulation model of fuel cell assembly process is established to provide contact resistance distribution with different assembly errors. An improved global sensitivity analysis method is proposed to evaluate the influence coefficient of each assembly error term on contact resistance based on a series of randomized simulation data. The case study of a single-layer fuel cell demonstrates the proposed method achieves higher efficiency than traditional sensitivity analysis methods, and finds out key assembly errors in regard to reducing contact resistance.

中文翻译：

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质子交换膜燃料电池接触电阻对组装误差的数据驱动敏感性分析

质子交换膜燃料电池因其零污染而成为汽车工业的一种很有前途的动力源。然而，其堆叠结构总是面临组装错误导致的接触电阻增加，从而导致工作期间的大量能量损失。为提高其输出性能，研究了装配误差对质子交换膜燃料电池接触电阻的影响。建立燃料电池组装过程的力学仿真模型，提供不同组装误差下的接触电阻分布。基于一系列随机仿真数据，提出了一种改进的全局灵敏度分析方法，用于评估每个装配误差项对接触电阻的影响系数。