摘要
剖析商业化运行的轻中型燃料电池物流车使用场景,得到燃料电池的使用要求:服役时间长、功率需求大和启停次数多,进而分析与使用特点对应的寿命衰减模式。以减小质子交换膜的应力张量为目标,进行湿度和怠速功率的优化设计,避免干湿循环对膜的机械和化学损伤;求解代价函数全局最优解,优化能量管理策略,抑制电位循环造成的Pt凝聚和降解;以消除空-空界面为目标,优化开关机闭环策略,缓解开关机造成的碳腐蚀。实际燃料电池系统道路运行2×10^(5)km,性能衰减3.1%。
Based on the analysis of the typical application scenarios of commerciality used light and medium logistics fuel cell vehicles,the requirements for the use of fuel cell systems were summarized,which were long service time,large power demanding with more frequent starts and stops;the performance degradation mode corresponding to the operating characteristics was analyzed.In order to reduce the stress tensor of proton exchange membrane,the humidity and idle power optimization design were carried out to avoid the membrane mechanical and chemical damage caused by dry wet cycle;the energy management strategy was optimized by solving the global optimal solution of the cost function to inhibit the Pt dissolution and degradation caused by potential cycling;the optimization of closed-loop startup&shutdown strategy was carried out to eliminate the air-air state and mitigate carbon corrosion caused by startups and stops.The performance of the fuel cell system decreased only by 3.1%when ran 2×10^(5)km on the rood.
作者
翟双
ZHAI Shuang(Shanghai Re-fire Technology Co.,Ltd.,Shanghai 201800,China)
出处
《电池》
CAS
北大核心
2021年第3期266-269,共4页
Battery Bimonthly
基金
国家重点研发计划(2019YFB1504600)。
关键词
燃料电池系统
长寿命
高相对湿度
控制策略
能量管理
fuel cell system
long-life
high relative humidity
control strategy
energy management
