质子交换膜燃料电池温度监控系统的设计与开发

DESIGN AND DEVELOPMENT OF TEMPERATURE MONITORING SYSTEM FOR PROTON EXCHANGE MEMBRANE FUEL CELLS

为对燃料电池进行有效的热管理,基于LabVIEW设计一套质子交换膜燃料电池温度监控系统。通过数据采集板卡实现LabVIEW监控平台与燃料电池温控实验平台的信号传输,从而对温度进行在线监测和控制。该系统采用K型热电偶阵列进行温度监测,在流场板VRML模型拾取传感器布置点,利用三维云图映射实现温度可视化,直观、准确地反映电池温度分布。采用内外水循环的加热、冷却方案,使用主、副调节器进行串行控制,将冷却水出口温度作为主调节器的被控变量,将无滞后的热电偶阵列所测温度作为副调节器的被控变量,快速、有效地控制温度。

A proton exchange membrane fuel cells temperature monitoring system based on LabVIEW is designed for effective thermal management of fuel cells.The signal transmission between the LabVIEW monitoring platform and the fuel cells temperature control experimental platform is achieved through the data acquisition board to realize on-line temperature monitoring.The system uses K-type thermocouple array for temperature monitoring,picks up sensor placement points in the VRML model of the flow field plate,and realizes temperature visualization by using three-dimensional cloud mapping,which directly and accurately reflects the temperature distribution.Using the internal and external water circulation to heat or cool scheme,the main and auxiliary regulator is used serial control.The temperature of the cooling water outlet is taken as the controlled variable of the main regulator,the temperature measured by the thermocouples array without delay is taken as the controlled variable of the auxiliary regulator,and the temperature is controlled quickly and accurately.