摘要
为了在温带、寒带地区推广燃料电池汽车,研究了含20片单体电池、活性面积为285 cm2的石墨基双极板聚合物电解质燃料电池短堆的零下启动。开发了基于实车的使用交互氢泵的电源系统;对短堆阳极和阴极同时供应氢气;用低温环境舱来构建-30℃环境;以起始膜—水(分子数)含量、交互电幅值及频率等作为3个控制参数,实现燃料电池短堆-30℃启动;测试了短堆零下启动前后的极化曲线。结果表明:燃料电池短堆-30℃启动后,中心位置的单体电池可在80 s内温升至0℃;在其余位置,可在200 s内温升至0℃;零下启动前后的极化性能基本无衰减。
Starting a fuel cell vehicle(FEV)under sub-zero temperature is one of the main obstacles to popularize FEVs in temperate and cold regions.This paper investigated the sub-zero start-up for a short stack of graphite-based bipolar plate polymer electrolyte fuel cells(PEFC)with 20 single cells and an active area of 285 cm2.Developed a power supply system by using an alternate hydrogen pump based on a real vehicle,with supplying hydrogen to the anode and the cathode of a short stack at the same time in a lowtemperature environment chamber to create a-30℃ start-up environment.The initial molecule-number content of membrane to water,the alternating electric amplitude and the frequency were three control parameters to achieve the-30℃ start-up of the PEFC short stack.The polarization curves of the short stack were tested before and after the sub-zero start-up.The results show that the single cell reaches 0℃ in 80 s in the middle of a short PEFC stack,and rises to 0℃ in 200 s in the other places of the stack.There is basically no polarization attenuation in the stack before and after the sub-zero start-up.
作者
司德春
蹇季廷
徐浩森
汪尚尚
王诚
张剑波
SI Dechun;JIAN Jiting;XU Haosen;WANG Shangshang;WANG Cheng;ZHANG Jianbo(School of Vehicle and Mobility,Tsinghua University,Beijing 100084,China;School of Mechanical Engineering,Tianjin University,Tianjin 300350,China;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China;Beijing Institute of Technology,Beijing Co-innovation Center for Electric Vehicles,Beijing 100081,China)
出处
《汽车安全与节能学报》
CAS
CSCD
北大核心
2021年第4期604-612,共9页
Journal of Automotive Safety and Energy
基金
科技部重点研发项目(2018YFB0106502)。
