氢氧燃料电池堆的静态排水影响因素研究  

Study on Static Water Removal Parameters of H_(2)-O_(2) PEMFC Stack

作　　者：谢峰[1] 文陈 邵志刚[1] 俞红梅[1] XIE Feng;WEN Chen;SHAO Zhigang;YU Hongmei(Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China;Beijing Spacecrafts,Beijing 100090,China)

机构地区：[1]中国科学院大连化学物理研究所,大连116023 [2]北京卫星制造厂,北京100090

出　　处：《载人航天》2021年第4期489-494,共6页Manned Spaceflight

基　　金：国家重点研发计划项目(2019YFA0210300);载人航天领域预先研究项目(050403)。

摘　　要：针对静态排水氢氧燃料电池堆的姿态敏感性和排水效率问题,采用一维模型假设,对矩形直条流道中液态水所受重力与气体吹力之比、静态排水速率与产水速率之比的影响因素进行解析,获得了姿态敏感性和排水效率的影响因素,并对氢氧燃料电池堆进行了综合验证。结果表明:姿态敏感性的影响因素为流道长深比、运行温度、压力、反应气化学计量比和电流密度等;排水效率的影响因素为极板的接触角、孔隙率、流道长深比、温度、压力、化学计量比、电流密度和排水压差等;当电堆中极板的接触角为15°、流道长深比为500、微孔孔径为0.1μm、孔隙率为1%、反应气压力为0.2 MPa、运行温度为60℃、排水压差为0.05 MPa时,氢氧燃料电池堆在6个方向上性能一致且能稳定运行。To solve the problem of pose sensibility and water removal efficiency of static water removal hydrogen oxygen proton exchange membrane fuel cell(PEMFC)stack,one-dimensional model was adopted to analyze the determinants of the ratio of gravity to gas blowing force and the ratio of static water removal rate to water production rate in the rectangular straight channel.The determinants of pose sensibility and water removal efficiency were obtained,and a hydrogen oxygen PEMFC stack was designed for integrated verification.The determinants of pose sensibility were channel length to depth ratio,operating temperature,pressure,stoichiometric ratio of reaction gas and current density,while the determinants of water removal efficiency were contact angle,porosity,channel length to depth ratio of polar plate,temperature,pressure,stoichiometric ratio,current density and water removal pressure difference.With a contact angle 15°of the polar plate,a length to depth ratio 500 of the flow channel,a micropore diameter 0.1μm,a porosity 1%,a gas pressure 0.2 MPa,an operating temperature 60℃,and a water removal pressure difference 0.05 MPa,the hydrogen oxygen PEMFC stack got the same performance in six directions and worked stably.

关 键 词：质子交换膜燃料电池 亲水多孔材料 方向敏感性 排水效率 水管理 

分 类 号：TM911.4[电气工程—电力电子与电力传动]