Air-cooled fuel cell cathode control method capable of resisting environmental disturbance

Abstract

The invention provides an anti-environmental disturbance air-cooled fuel cell cathode control method, which belongs to the technical field of new energy power generation, and specifically comprises the following steps: respectively obtaining a reference temperature and a protection activation resistance value corresponding to a load current value according to a reference temperature-current curve and a protection activation resistance-current curve of an air-cooled fuel cell stack; adjusting the temperature of the galvanic pile to a reference temperature, and measuring the activation resistance value of the galvanic pile in real time; and if the activation resistance value quickly approaches to the corresponding protection activation resistance value and tends to exceed the protection activation resistance value, reducing the corresponding reference temperature, and repeating until the activation resistance value tends to be stable, thereby realizing the cathode control of the air-cooled fuel cell. According to the invention, on the basis of reference temperature control, the protection activation resistance value related to the environmental condition is introduced, so that the anti-environmental disturbance control method is obtained, voltage attenuation of the galvanic pile can be effectively avoided, the service life of the galvanic pile is prolonged, and combination with specific engineering application is facilitated.

Description

technical field [0001] The invention belongs to the technical field of new energy power generation, and in particular relates to an air-cooled fuel cell cathode control method resistant to environmental disturbance. Background technique [0002] As a kind of clean energy, proton exchange membrane fuel cell has the characteristics of high efficiency, zero pollutant emission, long battery life, and low working temperature. It is one of the research hotspots in the field of new energy. Air-cooled proton exchange membrane fuel cells eliminate the need for auxiliary equipment for realizing functions such as cooling liquid circulation and reaction gas humidification. Compared with traditional fuel cells, they have the advantages of light weight, high efficiency, and compact structure. The ideal power source for the future of electrical systems. [0003] The output performance of the proton exchange membrane fuel cell has a great relationship with its operating temperature and the...

AI Technical Summary

Problems solved by technology

Once the deviation is too large, the controller will control the temperature too high, causing the water content of the stack to decrease sharply, resulting in an irreversible rapid decay of the voltage

This is also a common problem in the current academic circles that air-cooled fuel cells, that is, it is difficult to make the stack adaptable to environmental changes simply from the perspective of temperature control

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