Analysis of Power Consumption on BOP System in a Fuel Cell Electric Bus According to the Fuel Cell Load Range

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-04-09 DOI:10.1007/s12239-024-00064-0

Yebeen Kim, Jiwoong Kim, Kyoungdoug Min

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Abstract

The proton exchange membrane fuel cell (PEMFC) in a fuel cell electric bus (FCEB) converts hydrogen's chemical energy into electrical energy. The fuel cell system comprises a fuel cell stack and a balance of plant (BOP) system, which efficiently controls the stack. Fuel cell and battery are sensitive to operational temperature, which directly impacts performance, lifespan, and safety. Therefore, a thermal management system (TMS) is necessary to maintain an appropriate temperature by dissipating the heat generated by the fuel cell and battery. In this study, the exponential or quadratic relationships between the power consumption of the major components of an FCEB and various factors, such as temperature and flow rate influencing the operational behavior and control of the components, were analyzed based on the results of a dynamometer vehicle test. Additionally, the vehicle's energy flow was calculated under different fuel cell load conditions. When the fuel cell operated at 56.3 kW, TMS power was 6.6 times higher than at 20 kW. At full load, under 90 kW, it increased to 17.4 times higher. The rise in fuel cell load correlated with higher heat generation, resulting in a significant increase in power consumption for both the radiator fan and coolant pump.

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根据燃料电池负载范围分析燃料电池电动公交车 BOP 系统的功耗

燃料电池电动公交车（FCEB）中的质子交换膜燃料电池（PEMFC）可将氢的化学能转化为电能。燃料电池系统由燃料电池堆和设备平衡（BOP）系统组成，后者可有效控制燃料电池堆。燃料电池和电池对工作温度非常敏感，会直接影响性能、寿命和安全性。因此，有必要使用热管理系统（TMS），通过散发燃料电池和电池产生的热量来保持适当的温度。在本研究中，根据测功机车辆测试的结果，分析了燃料电池和电池主要组件的功耗与影响组件运行行为和控制的各种因素（如温度和流速）之间的指数或二次关系。此外，还计算了不同燃料电池负载条件下的车辆能量流。当燃料电池以 56.3 kW 的功率运行时，TMS 功率是 20 kW 功率的 6.6 倍。在满负荷（90 千瓦以下）时，功率增加到 17.4 倍。燃料电池负载的增加与发热量的增加有关，导致散热器风扇和冷却剂泵的功耗显著增加。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.