A method and device for obtaining the decay trend of a proton exchange membrane fuel cell

Abstract

The invention discloses a method and device for obtaining the attenuation trend of the proton exchange membrane fuel cell, wherein the method for obtaining the attenuation trend of the proton exchange membrane fuel cell is to judge whether the proton exchange membrane fuel cell has a trend by detecting the target gas in the tail gas , compared to the way in the prior art to judge the decay trend by the voltage difference between the initial polarization curve and the current polarization curve, once the content of the target gas in the exhaust gas reaches a certain value, the PEMFC can be quickly judged Attenuation occurs, and at the same time, the attenuation trend of the proton exchange membrane fuel cell is converted into the content of the target gas, so that the rapid judgment of the attenuation trend of the proton exchange membrane fuel cell is realized.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a method and a device for obtaining the decay tendency of a proton exchange membrane fuel cell. Background technique [0002] Proton exchange membrane fuel cells have many advantages such as cleanliness and high efficiency, so they are gradually being developed and applied in hydrogen energy vehicles. Nevertheless, there are still many problems and challenges in PEMFC, including PEMFC fault diagnosis, life prediction and decay trend determination, etc. [0003] Proton exchange membrane fuel cells are composed of multiple repeating components (including membranes, catalytic layers, gas diffusion layers, bipolar plates, and seals), and the internal working environment is very harsh (strong acidity, high potential, high humidity, high temperature, etc. ), so there is an unavoidable attenuation of the performance of the proton exchange membrane fuel cell. If it is not discovered ...

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Problems solved by technology

[0003] Proton exchange membrane fuel cells are composed of multiple repeating components (including membranes, catalytic layers, gas diffusion layers, bipolar plates, and seals), and the internal working environment is very harsh (strong acidity, high potential, high humidity, high temperature, etc. ), so there is an unavoidable attenuation of the performance of the proton exchange membrane fuel cell.

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