质子交换膜燃料电池堆内温湿度测量方法进展

Advance on Intra-Proton Electrolyte Membrane Fuel Cell Stack Temperature and Humidity Measurement

分析了燃料电池堆内温度及湿度测量的要求和难点,总结目前燃料电池堆内温度和湿度的实验测试手段和方法,其中温度(场)的测量方法包括微型热电偶(阵列)、热电阻(阵列)、红外热成像、光纤布拉格光栅及荧光测温法;湿度(场)的测量方法有气相色谱法、激光吸收光谱法、小微电子式湿度传感器及光纤布拉格光栅法.通过比较各类测量方法的特点,认为微型电子式传感器及其组合测量具有较好的推广前景,光纤布拉格光栅由于具有信号多路复用、抗电磁/化学干扰等特点,在未来会有较好的发展.

Requirement and difficulties of intra-stack measurement are analyzed. The state of the art in intra-stack temperature and humidity measurement is presented. Methodologies in temperature（field） measurement are micro- thermocouple （ array ）, resistive temperature detector （array）, infrared image, fiber-bragg gratings and phosphor thermometry; while chromatography, tunable laser absorption spectrum, micro-electronic humidity sensor and fiber-bragg gratings are applied in humidity measurement. Comparison of the measurement technologies shows that micro sensors have good spatial and signal resolution with low cost, while optic fiber bragg gratings benefits in chemical inertness, immunity to electromagnetic interference and multiplexing capability,which has the most brilliant future.