Gas management system and method for PEMFC anode recirculation and storage medium

Abstract

The invention provides a gas management system and method for PEMFC anode recirculation and a storage medium. An anode hydrogen circulation system of a fuel cell is improved, two electromagnetic valves are added in a circulation loop, and the gas inlet end of a pressure reduction treatment device is communicated with the gas outlet end of a hydrogen bottle; the gas outlet end of the pressure reduction treatment device is communicated with the first valve port of thethree-way valve; a second valve port of the three-way valve is communicated with a gas inlet end of the second electromagnetic valve; a third valve port of the three-way valve is connected with a gas inlet end of the galvanic pile anode; a gas outlet end of the second electromagnetic valve is connected with a gas outlet end of the circulating pump; a second end of the circulating pump is connected with a gas exhaust end of the galvanic pile anode; the gas inlet end of the first electromagnetic valve is connected with the gas outlet end of the circulating pump, and the gas outlet end of the first electromagnetic valve communicates with the atmosphere. According to the system, the anode can be purged more thoroughly, the utilization rate of fuel can be greatly improved, the cost is low, and the system is easy to implement.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to a gas management system, method and storage medium for PEMFC anode recirculation. Background technique [0002] Proton exchange membrane fuel cells (PEMFC) have many advantages over internal combustion engines, including low operating temperature, low noise, low pollutant emissions, high power density, and high efficiency. In laboratory experiments, proton exchange membrane fuel cells (PEMFCs) were always supplied with an excess of stoichiometric hydrogen to avoid fuel shortages and to remove the produced liquid water. Anode purge measures are necessary because water and nitrogen from the cathode will gradually diffuse to the anode and accumulate in the anode during the operation of the fuel cell, resulting in the dilution of hydrogen and the degradation of the stack performance. However, most of the anode purge strategies commonly used today are to control the opening or clo...

AI Technical Summary

Problems solved by technology

Anode purge measures are necessary because water and nitrogen from the cathode will gradually diffuse to the anode and accumulate in the anode during the operation of the fuel cell, resulting in hydrogen dilution and stack performance degradation

However, most of the anode purge strategies commonly used today are to control the opening or closing of the purge valve at a certain time interval. On the other hand, this simple gas management strategy will inevitably cause waste of hydrogen, lower fuel utilization, and worse economic efficiency

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