【作者】 卡哈尔.艾买提； 蒋先锋； 盛东亮； 韩敏芳；

【Author】 Kahaer Aimaiti,JIANG Xian-feng,SHENG Dong-liang,HAN Min-fang(Union Research Center of Fuel Cell,School of Chemical and Environmental Engineering,China University of Mining and Technology,Beijing 100083,China)

【机构】 中国矿业大学(北京)燃料电池联合研究中心化学与环境工程学院；

【摘要】 固体氧化物燃料电池堆由多片单电池串/并联组成,各单电池的电压是表征电池堆性能的关键参数。大功率电池堆高达数百伏的累积电势,成了单电池电压测试的障碍。本文设计了一种高共模抑制比的差分运算电路,该电路在测试中能有效地抑制燃料电池堆的共模电压。实验优化了利用该电路进行燃料电池电压检测的最佳方案。更多还原

【Abstract】 Solid oxide fuel cell stack is composed of multiple serial/parallel single cells,whose voltage is the key parameter of the stack’s performance.But hundreds of accumulated electric potentials have become a barrier in single-cells’ voltage testing.The differential operational amplifier circuit of high common-mode rejection is presented in this paper,which can effectively suppress the stack’s common-mode voltage in testing.The optimum voltage detection plan in which the differential operational amplifier circuit has been used is proposed in this paper as well.更多还原