大功率质子交换膜燃料电池堆冷启动时电压均匀性分析

IF 10.1 1区工程技术 Q1 ENERGY & FUELS

Applied Energy Pub Date : 2025-05-10 DOI:10.1016/j.apenergy.2025.125999

Ping Lv , Siyuan Wu , Ben Hou , Xin Sun , Zixuan Wang , Xueting Liu , Guangwei Li , Meng Han , Kui Jiao , Qing Du , Danmin Xing

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引用次数: 0

摘要

实现大功率质子交换膜燃料电池（PEMFC）堆的快速冷启动仍然是PEMFC汽车商业化的重大挑战。由于“桶效应”，PEMFC堆叠的冷启动能力主要取决于其最弱的单个电池的性能，这使得电压均匀性成为关键因素。在这项研究中，在−30°C下，对包含370个电池的110 kW PEMFC堆叠进行了冷启动实验，以研究堆叠结构设计和冷启动参数对电压均匀性的影响。结果表明，靠近负极的侧电池始终表现出优越的性能。此外，阻塞单极板和假电池的水腔可以显著提高电压一致性。研究进一步分析了吹扫时间、冷却剂流量、阴极气体流量和环境温度对电压均匀性的影响。本研究为冷启动时大功率电堆电压均匀性提供了全面的实验分析，为指导电堆结构设计和冷启动策略优化提供了有价值的见解。

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The voltage uniformity analysis of high-power proton exchange membrane fuel cell stack during cold start

Achieving fast cold startup for high-power proton exchange membrane fuel cell (PEMFC) stacks remains a significant challenge for the commercialization of PEMFC vehicles. The cold start capability of a PEMFC stack is predominantly dictated by the performance of its weakest single cell due to the “Buckets effect,” making voltage uniformity a critical factor. In this study, cold start experiments were performed on a 110 kW PEMFC stack comprising 370 cells at −30 °C to investigate the impact of stack structure design and cold start parameters on voltage uniformity. The results demonstrate that the side cell adjacent to the negative electrode consistently exhibits superior performance. Moreover, blocking the water chamber of the unipolar plate and fake cells significantly enhances voltage consistency. The study further analyzes the effects of purge duration, coolant flow rate, cathode gas flow rate, and ambient temperature on voltage uniformity. This work provides a comprehensive experimental analysis of voltage uniformity in high-power stacks during cold start and offers valuable insights to guide stack structure design and cold start strategy optimization.

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来源期刊

Applied Energy 工程技术-工程：化工

CiteScore

21.20

自引率

10.70%

发文量

1830

审稿时长

41 days

期刊介绍： Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.