Fuel cell multi-mode switching anode pressure pulsating water erosion control system

Abstract

The invention relates to a fuel cell multi-mode switching anode pressure pulsating water scouring control system, belonging to the fuel cell technical field. The technical points of the method are asfollows: (1) the pressure difference of anode scouring for fuel cell stack is dynamically adjusted to achieve the optimal scouring effect of anode water; (2) adjusting the direction of anode scouringdynamically to achieve the optimal distribution of anode runner water; (3) The anode is sealed to realize the anode hydrogen cycle with zero hydrogen emission. The invention can realize the optimal anode water scouring effect of the fuel cell, reduce the pressure fluctuation of the anode of the fuel cell, avoid the voltage fluctuation caused by the pressure sudden drop in the traditional anode drainage control, and optimize the distribution of the anode water in the stack to improve the uniformity of the working voltage of the fuel cell unit.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and relates to a fuel cell multi-mode switching anode pressure pulsating water flushing control system. Background technique [0002] When the fuel cell is working, hydrogen generates hydrogen ions at the anode and passes through the proton exchange membrane, and then reacts with oxygen at the cathode to generate water. The water produced at the cathode will diffuse back to the anode due to the concentration difference, which will increase the accumulation of water in the anode of the stack And the electrode is flooded, thus hindering the hydrogen transmission, so the water management of the anode of the stack is very important. The traditional anode water management generally uses intermittent open one-way flushing to discharge the anode water, but the traditional method will lead to more waste of hydrogen, reduce the utilization rate of hydrogen, and cannot effectively avoid the uneven distr...

AI Technical Summary

Problems solved by technology

The traditional anode water management generally uses intermittent open one-way flushing to discharge the anode water, but the traditional method will lead to more waste of hydrogen, reduce the utilization rate of hydrogen, and cannot effectively avoid the uneven distribution of anode water. The resulting uneven voltage of the single cell will also cause large fluctuations in the stack voltage due to excessive fluctuations in the anode pressure during flushing

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