| 刘懿,杨旭东,雷基林,等.阴极出口可变结构对空冷型质子交换膜燃料电池的性能影响[J].内燃机工程,2025,46(3):69-78. |
| 阴极出口可变结构对空冷型质子交换膜燃料电池的性能影响 |
| Effects of Cathode Outlet Variable Structure on the Performance of Air-Cooled Proton Exchange Membrane Fuel Cells |
| DOI：10.13949/j.cnki.nrjgc.2025.03.008 |
| 关键词:燃料电池 水热管理 保水 冷却 |
| Key Words:fuel cell hydrothermal management water retention cooling |
| 基金项目:云南省基础研究计划项目（202201BE070001-034） |
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| 摘要点击次数: 11 |
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| 摘要:设计了一种阴极出口可变结构的空冷型质子交换膜燃料电池（proton exchange membrane fuel cell， PEMFC） 模型，其具有单独的冷却流道，阴极出口的面积是可变的，在增强冷却效果的同时可有效调节电池内部的水平衡。为了突出出口可变结构的特点，同时计算了原始结构和出口可变结构的单电池模型。在0.6 V的输出电压下，出口可变结构模型的平均温度相比原始结构模型降低6 ℃，平均水含量相比原始结构模型增加了0.78。在负载电流密度为1.046 A/cm2时，出口可变结构模型的功率密度相比原始结构模型提高了2.20%。并且在高温干燥环境下，挡板高度为1.1 mm的出口可变结构模型其功率密度比挡板高度为0.3 mm的模型高出了2.30%。结果表明，出口可变结构可以通过改善电池的冷却性能和保水性能来提高电池性能，并且在复杂环境下具有更好的环境适应性。 |
| Abstract:An air-cooled proton exchange membrane fuel cell（PEMFC） model with a variable cathode outlet structure was designed with separate cooling channels and a variable cathode outlet area， enabling effective regulation of the moisture balance inside the cell while enhancing the cooling effect. In order to highlight the characteristics of the outlet variable structure， single-cell models of the original structure and the outlet variable structure were calculated. At an output voltage of 0.6 V， the average temperature of the outlet variable structure model was 6 ℃ lower than that of the original structure model， and the average water content of the outlet variable structule model increased by 0.78. At a load current density of 1.046 A/cm2， the power density of the outlet variable structure model was improved by 2.20% over the original structure model. Moreover， in the high-temperature and dry environment， the power density of the variable outlet structure model with a baffle height of 1.1 mm was 2.30% higher than that of the model with a baffle height of 0.3 mm. The results indicate that the variable outlet structure can improve the cell performance by enhancing the cooling performance and water retention performance of the cell， and it has better environmental adaptability in complex environments. |
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