Method and device for detecting operation state of proton exchange membrane fuel cell
A proton exchange membrane and fuel cell technology, applied in the direction of fuel cells, fuel cell control, fuel cell additives, etc., can solve the problem of increasing the complexity of the state identification process, affecting the real-time and accuracy of fuel cell state identification, and inaccurate identification results. Accuracy and other issues to achieve accurate fault prediction, ensure robustness, and avoid data collection
Active Publication Date: 2021-06-25
UNIV OF SCI & TECH OF CHINA
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Although this method is non-invasive, it collects the magnetic field data around the MEA of the fuel cell, and needs to use a mathematical model to derive the MEA surface magnetic field distribution, which not only increases the complexity of the state identification process, but also brings additional errors, leading to identification imprecision of results
[0009] In summary, there are corresponding deficiencies in the current methods of using electromagnetic data to diagnose PEMFC faults, which affect the real-time and accuracy of fuel cell state identification.
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[0035] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings.
[0036] In the process of realizing the present invention, it is found that the magnetic field information in the area near the cathode surface of the proton exchange membrane can be directly used to detect the operating state of the PEMFC, which not only solves the impact of embedded hardware on the state of the battery, but also provides a magnetic field that can characterize the entire MEA surface Distributed data, so as to monitor and analyze the changes of fuel cell operation status in real time.
[0037] Firstly, the rationality of the inventive concept of the present invention and the detection method proposed based on the inventive concept will be explained through the generation mechanism of the induced magnetic fi...
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The invention relates to a method and a device for detecting the operation state of a proton exchange membrane fuel cell. The detection method comprises the following steps: arranging a fluxgate sensor on one side of a cathode surface of a proton exchange membrane fuel cell and at a position opposite to a to-be-detected point on the cathode surface; when the proton exchange membrane fuel cell runs, continuously measuring magnetic field change information of the magnetic field of the to-be-detected point along with time change by using the fluxgate sensor; and determining the operation state of the proton exchange membrane fuel cell according to the corresponding relationship between the magnetic field change information and the operation state of the proton exchange membrane fuel cell. According to the method, the operation state of the proton exchange membrane fuel cell can be accurately identified in real time, and the state change process and the corresponding mechanism of the proton exchange membrane fuel cell are analyzed, so that the fault of the proton exchange membrane fuel cell (PEMFC) can be accurately predicted in real time, and commercialized popularization is facilitated.
Description
technical field [0001] The invention relates to the technical field of proton exchange membrane fuel cell state identification, in particular to a method and device for detecting the operating state of a proton exchange membrane fuel cell. Background technique [0002] With the consumption of fossil fuels and the long-term environmental degradation caused by the use of fossil fuels, the research on clean energy has attracted more and more attention. Proton exchange membrane fuel cell (PEMFC) has the advantages of zero pollution, high energy utilization rate, low operating temperature, and low noise, so that fuel cells have been applied in the fields of automobiles, aviation, distributed power stations, and portable equipment. [0003] A typical fuel cell is mainly composed of a bipolar plate 4 , a membrane electrode assembly (MEA) and a sealing element, etc., and the MEA is mainly composed of a proton exchange membrane 1 , an anode 3 and a cathode 2 . When the fuel cell is ...
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Login to View More IPC IPC(8): H01M8/04664H01M8/04298
CPCH01M8/04671H01M8/04305Y02E60/50
Inventor 毛磊孙誉宁张晨刘忠勇吴强
Owner UNIV OF SCI & TECH OF CHINA