Volume 20: Sustainable Energy Solutions for a Post-COVID Recovery towards a Better Future: Part III

Development and Application on the Distributed Signal Integrated Amplification Sensor of Polymer Electrolyte Membrane Fuel Cell Xiangfeng Wu

Abstract

In the study of in-plane signal acquisition and measurement of polymer electrolyte membrane fuel cells, it is difficult to ensure the accuracy of direct signal measurement because the voltage drop of the shunt resistor that needs to be used is small and easily disturbed and generates transmission loss. This paper develops a distributed signal integrated amplification sensor (DSIAS) using PCB segment measurement technology, which amplifies the segment voltage drop signal instantaneously before transmission and acquisition. It avoids the loss and interference of small signals in the transmission process. In addition, a unique collector structure is designed to meet the matching installation between the endplate and the PCB sensor, thus enabling online amplified measurement of planar information without affecting the internal system of the fuel cell. This signal amplification sensor has been initially measured and applied planar segment impedance. Under standard operating conditions, measurements were taken to obtain the impedance information of the in-plane segments. The electrochemical impedance spectra of the cell single and each segment were plotted separately using the FFT algorithm of MATLAB software. These works can be applied to understand and explore the internal mechanisms of fuel cells in more depth.

Keywords PEMFC, DSIAS, Integrated Amplification, EIS, FFT, In-plane Impedance