可逆PEM燃料电池建模及切换过程系统效率分析研究  

Modeling and efficiency analysis of switching process in reversible PEMfuel cells

作　　者：邱子桐 张潇桐 戈阳阳 李儒欢 李浩南 冀承泽 吴锴[1] 周峻[1] QIU Zitong;ZHANG Xiaotong;GE Yangyang;LI Ruhuan;LI Haonan;JI Chengze;WU Kai;ZHOU Jun(State Key Laboratory of Electric Insulation and Power Equipment,Xi'an Jiaotong University,Xi'an Shaanxi 710049,China;Electric Power Research Institute,State Grid Liaoning Electric Power Co.,Ltd.,Shenyang Liaoning 110002,China)

机构地区：[1]西安交通大学电工材料电气绝缘全国重点实验室,陕西西安710049 [2]国网辽宁省电力有限公司电力科学研究院,辽宁沈阳110002

出　　处：《电源技术》2025年第3期596-607,共12页Chinese Journal of Power Sources

基　　金：陕西省重点研发计划(2023-YBGY-057);国家电网公司项目(SGLNDK00XXJS2310044)。

摘　　要：可逆燃料电池的工作模式切换是影响系统性能的关键因素之一。建立了电场-热场-流体场多场耦合的可逆质子交换膜燃料电池动态模型,重点研究了不同的工作参数(包括工作温度、工作压强)和切换参数(包括电流密度峰值和切换频率)在模式切换时对于系统效率的影响,通过讨论不同场景下电池输出特性的变化分析了电池内部的电化学特性,探讨了系统效率的影响机理。研究结果表明,通过升温、加压可以有效提高电池的往返效率,最高可提升1.76%,增大电流密度峰值、加快切换频率则不利于往返效率提升。The mode switching of reversible fuel cells is one of the key factors affecting the system performance.A dynamic model of reversible proton exchange membrane fuel cell with multi-field coupling of electric field-thermal field-fluid field was established,the influence of different operating parameters(including operating temperature,operating pressure)and switching parameters(including peak current density and switching frequency)on the system efficiency during the mode switching was studied.The electrochemical properties inside the cell were analyzed by discussing the changes of the cell output characteristics in different scenarios,and the influence mechanism of system efficiency was discussed.The results show that the round-trip efficiency of the battery can be effectively improved by warming and pressurization,with a maximum increase of 1.76%,while increasing the peak current density and accelerating the switching frequency are not conducive to the round-trip efficiency improvement.

关 键 词：可逆质子交换膜燃料电池 切换过程 往返效率 电-氢转换 

分 类 号：TM911[电气工程—电力电子与电力传动]