TY - GEN
T1 - Study and Experimental Verification of the Effect of Assembly Pressure on the Electrical Efficiency of PEM Fuel Cells
AU - Lv, Bao
AU - Han, Kai
AU - Li, Xiaolong
AU - Wang, Xuanyu
N1 - Publisher Copyright:
© 2023, Beijing Paike Culture Commu. Co., Ltd.
PY - 2023
Y1 - 2023
N2 - Assembly pressure is one of the main factors affecting the internal charge, heat, and mass transfer of proton exchange membrane (PEM) fuel cells. It causes the deformation of the components to change the electrical and gas transport characteristics of the internal contact interface of the fuel cell, and affects the overall performance of the cell. In this paper, a three-dimensional finite element model of a single cell considering the surface topography of the component and the contact behavior of the asperities is firstly established, and the contact pressure and diffusion layer porosity of the contact interface of each component of the fuel cell are obtained; Then, the total contact resistance of the cell and the effective diffusivity of the gas in the diffusion layer were established; Finally, a detailed voltage model considering different losses of the fuel cell was established based on the MATLAB platform. The results show that the contact resistance decreases with the increase of the assembly pressure, and the maximum error between the calculated contact resistance and the experimental value is 1.7%, which meets the accuracy requirements; when the clamping pressure is 0.75MPa, the sum of the ohm internal resistance and the concentration difference internal resistance is the smallest, the fuel cell output power is the largest, which can provide guidance for the assembly of fuel cells in practical applications.
AB - Assembly pressure is one of the main factors affecting the internal charge, heat, and mass transfer of proton exchange membrane (PEM) fuel cells. It causes the deformation of the components to change the electrical and gas transport characteristics of the internal contact interface of the fuel cell, and affects the overall performance of the cell. In this paper, a three-dimensional finite element model of a single cell considering the surface topography of the component and the contact behavior of the asperities is firstly established, and the contact pressure and diffusion layer porosity of the contact interface of each component of the fuel cell are obtained; Then, the total contact resistance of the cell and the effective diffusivity of the gas in the diffusion layer were established; Finally, a detailed voltage model considering different losses of the fuel cell was established based on the MATLAB platform. The results show that the contact resistance decreases with the increase of the assembly pressure, and the maximum error between the calculated contact resistance and the experimental value is 1.7%, which meets the accuracy requirements; when the clamping pressure is 0.75MPa, the sum of the ohm internal resistance and the concentration difference internal resistance is the smallest, the fuel cell output power is the largest, which can provide guidance for the assembly of fuel cells in practical applications.
KW - Assembly Pressure
KW - Electrical Efficiency
KW - Proton exchange membrane fuel cell
KW - Resistance Test
UR - http://www.scopus.com/inward/record.url?scp=85161144480&partnerID=8YFLogxK
U2 - 10.1007/978-981-99-1027-4_101
DO - 10.1007/978-981-99-1027-4_101
M3 - Conference contribution
AN - SCOPUS:85161144480
SN - 9789819910267
T3 - Lecture Notes in Electrical Engineering
SP - 967
EP - 974
BT - The Proceedings of the 5th International Conference on Energy Storage and Intelligent Vehicles, ICEIV 2022
A2 - Sun, Fengchun
A2 - Yang, Qingxin
A2 - Dahlquist, Erik
A2 - Xiong, Rui
PB - Springer Science and Business Media Deutschland GmbH
T2 - 5th International Conference on Energy Storage and Intelligent Vehicles, ICEIV 2022
Y2 - 3 December 2022 through 4 December 2022
ER -