关键词: 氢燃料电池；PEMFC；鼓泡增湿技术；PID 控制

Abstract: In the proton exchange membrane fuel cell (PEMFC) system, the humidity of the intake air is one of the key factors that affect its performance, if the humidified water content is too high or too low, it will lead to the fuel cell performance cannot be fully exerted. To ensure the normal, stable, and efficient operation of the fuel cell, it is necessary to study the fuel cell humidification technology. Therefore, this paper briefly introduces the humidification principle of the bubbling humidification technology, further elaborate on the working principle and characteristics of the bubbling humidifier, the fuzzy proportional-integral-derivative (PID) control strategy is used to automatically adjust the temperature of the bubbling humidification to maintain the humidity and temperature of the intake air. The bubbling humidification equipment is simple, the process is simple, and high humidity can be obtained at a small flow rate, which has good application value for improving the performance of fuel cell.

Key words: Hydrogen fuel cell; PEMFC; Bubbling humidification technology; PID control