Operation method of proton exchange membrane fuel cell based on non-uniformity of physical field distribution
A technology of proton exchange membrane and non-uniformity, which is applied in the direction of fuel cells, fuel cell control, fuel cell additives, etc., can solve the problems of complex mapping relationship process, time-consuming, low efficiency, etc., to improve durability and prolong durability resistance, reducing the effect of local temperature
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Embodiment 1
[0061] The invention adopts the operation of the PEMFC under suitable temperature conditions to optimize, and proposes an operation method based on the non-uniformity of the PEMFC, which is used to optimize the selection of the operation temperature in different current regions when the operating life of the PEMFC is considered. The detailed steps mainly involved in the proton exchange membrane fuel cell operating method based on the non-uniformity of physical field distribution of the present invention are as follows:
[0062] In step 1, a PEMFC experimental test model is prepared, and the PEMFC experimental test model includes a plurality of printed circuit (PCB) boards with the same size and multiple regions. Through the printed circuit (PCB) board to obtain the current density and temperature of the PEMFC operation;
[0063] Step 2: Carry out the polarization curve test. The current density changes as a step function change, from zero to the limit current density. For each...
Embodiment 2
[0084] The steps of Embodiment 2 and Embodiment 1 are basically the same, except that the actual PEMFC model used in the real experiment is not used, but the simulated PEMFC simulation model established by the simulation software.
[0085] The process of establishing the simulation model is as follows:
[0086] Using computational fluid dynamics simulation software, firstly establish a PEMFC model with the same dimensions, materials and parameters as the PEMFC used in the experimental test; use the PEMFC module and user-defined functions in the simulation software to simulate the PEMFC model according to the operating parameters during the experimental test. The polarization curve under the operating parameters is also obtained; the validity of the simulation result is verified by comparing the polarization curve of the experiment and the simulation. If it is within the acceptable error range, proceed to the next step, otherwise, repeat the steps of establishing the simulation ...
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