千瓦级高温聚合物电解质燃料电池堆理论模拟与性能
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"电堆的输出功率虽然可以通过单电池数量的增加而得以提升，但同时随着单电池数量的增加，电堆的单池一致性和热管理问题也会逐步凸显。单池数量的选择对设计电堆输出功率和 使用范围至关重要，电堆的温度分布及其一致性对电堆热管理至关重要。因此，构建了等比例的高温聚合物电解质膜燃料电池 堆模型，拟通过模拟研究单电池数量对电堆热管 理、单池一致性及多物理场的影响，为实验研究和进一步工程放大提供具体指导和参考。然后采取实验手段，组装1~5 kW高温聚合物电解质膜燃料电池堆进行试验研究验证。本研究为 1~5 kW 高温聚合物电解质膜燃料电池堆的开发提供了理论和工程实践基础。"
Although the output power of a fuel cell stack can be increased by increasing the number of unit cells, issues regarding cell-to-cell uniformity and thermal management gradually emerge as the number of unit cells grows. The selection of the unit cell count is critical for designing the stack's output power and operating envelope, while the stack's temperature distribution and its uniformity are vital for its thermal management. To address these issues, a proportionally scaled high-temperature polymer electrolyte membrane fuel cell (HT-PEMFC) stack model was developed. This study aimed to investigate the effects of the unit cell count on the stack's thermal management, cell-to-cell uniformity and multiphysics fields through numerical simulations, so as to provide specific guidance and references for experimental research and subsequent engineering scale-up. Subsequently, experimental validation was carried out by assembling a 1–5 kW HT-PEMFC stack and performing corresponding test studies. This work establishes a theoretical and engineering practice foundation for the development of 1–5 kW high-temperature polymer electrolyte membrane fuel cell stacks.
