储能科学与技术 ›› 2024, Vol. 13 ›› Issue (3): 952-962.doi: 10.19799/j.cnki.2095-4239.2023.0630

• 储能测试与评价 • 上一篇    下一篇

大功率燃料电池建模与电压一致性分析

包敏杰1(), 俞小莉2,3, 黄瑞2,3(), 陈俊玄2, 陈孝炀2, 郅文彬1   

  1. 1.浙江大学工程师学院,浙江 杭州 310015
    2.浙江大学能源工程学院,浙江 杭州 310027
    3.浙江省汽车智能热管理科学与技术重点实验室,浙江 台州 317299
  • 收稿日期:2023-09-14 修回日期:2023-11-03 出版日期:2024-03-28 发布日期:2024-03-28
  • 通讯作者: 黄瑞 E-mail:bmj772@zju.edu.cn;hrss@zju.edu.cn
  • 作者简介:包敏杰(1998—),男,硕士研究生,研究方向为燃料电池热管理,E-mail:bmj772@zju.edu.cn
  • 基金资助:
    能源清洁利用国家重点实验室开放基金(ZJUCEU2022016);浙江大学实验技术研究项目(SYB202109)

High-power fuel cell modeling and voltage uniformity analysis

Minjie BAO1(), Xiaoli YU2,3, Rui HUANG2,3(), Junxuan CHEN2, Xiaoyang CHEN2, Wenbin ZHI1   

  1. 1.Polytechnic Institute, Zhejiang University, Hangzhou 310015, Zhejiang, China
    2.College of Energy Engineering, Zhejiang University, Hangzhou 310027, Zhejiang, China
    3.Key Laboratory of Smart Thermal Management Science & Technology for Vehicles of Zhejiang Province, Taizhou 317299, Zhejiang, China
  • Received:2023-09-14 Revised:2023-11-03 Online:2024-03-28 Published:2024-03-28
  • Contact: Rui HUANG E-mail:bmj772@zju.edu.cn;hrss@zju.edu.cn

摘要:

随着燃料电池堆朝着大功率发展,其工作时单体间的不一致性更加明显,长时间处于恶劣工作条件的单体寿命会明显短于其他单体,并导致电池堆的寿命大幅缩减。为探究不同运行参数对大功率燃料电池单体工作性能一致性的影响规律,首先,建立了包括流体网络模型、燃料电池电压模型和燃料电池热阻模型三个部分的110 kW大功率燃料电池模型。其次,开展燃料电池稳态试验,对所建立的燃料电池模型进行试验验证,仿真与试验结果误差在5%以内。最后,基于模型仿真,以电压最大偏差率为评价指标,分别探究工作电流、冷却水流量和冷却水进口温度三个运行参数对燃料电池电压一致性的影响规律。仿真结果表明,工作电流对燃料电池单体电压一致性的影响程度更大,其次是冷却水进口温度,最后是冷却水流量。本研究有助于大功率燃料电池发动机的结构优化设计以及为热管理控制策略开发提供指导。

关键词: 燃料电池, 电压一致性, 最大偏差率

Abstract:

With the advancement of fuel cell stack technology for the development of higher power outputs, operational disparities among individual cells have become more apparent. Longevity of a cell subjected to prolonged poor operating conditions is markedly diminished compared to its counterparts, often becoming a decisive factor in determining the overall stack lifespan. Thus, to assess the effects of varied operational parameters on achieving uniform performance in high-power fuel cells, a comprehensive 110 kW, high-power fuel cell model was developed. This model encompasses a fluid network, fuel cell voltage, and fuel cell thermal resistance models. Subsequently, a steady-state test was executed to validate the fuel cell model, revealing that the error between simulation and test results remained within a 5% margin. Employing the model simulations, maximum deviation rate of voltage was utilized as the evaluation criterion to analyze the influence of three key operating parameters: operating current, cooling water flow rate, and cooling water inlet temperature on the voltage uniformity of the fuel cell. Thus, the simulation results indicate that the operating current exerts the most pronounced impact on the voltage uniformity of the fuel cell, followed by the cooling water inlet temperature, with the cooling water flow rate exhibiting the test influence. This study offers valuable insights for guiding the structural optimization design of high-power fuel cell engines and the formation of thermal management control strategies.

Key words: fuel cell, voltage uniformity, maximum deviation rate

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