Gas fuel leakage automatic detection and safety alarm system in fuel cell system

Abstract

The invention discloses a gas fuel leakage automatic detection and safety alarm system in a fuel cell system. The gas fuel leakage automatic detection and safety alarm system comprises a hydrogen flowmeter, an ampere meter, a numerical analysis and operation part, a logic judgment and control part, a hydrogen leakage alarm and a hydrogen valve switch controller. According to the invention, the output current of a fuel cell stack is measured in real time, and the measured output current is converted into the reaction amount of the corresponding fuel gas according to the corresponding chemicalreaction principle of the fuel cell. Meanwhile, the gas supply flow of a fuel gas storage tank is also measured in real time, and then whether fuel gas leakage exists in the whole system or not is judged by comparing the actually measured consumption of the fuel gas with the gas reaction amount participating in the corresponding chemical reaction. Therefore, the system is simple, accurate and reliable to operate.

Description

technical field [0001] The invention relates to the technical field of fuel cells, in particular to an automatic gas fuel leakage detection and safety alarm system in a fuel cell system. Background technique [0002] With the increasing energy crisis and environmental pollution worldwide, many countries are constantly exploring and using clean energy, especially the application of clean energy in transportation fields such as automobiles is becoming more and more extensive. For this reason, electric vehicles have been vigorously promoted in recent years. However, compared with traditional fuel vehicles, electric vehicles still cannot meet the requirements of users because of their relatively short battery life and long charging time due to the limitations of their battery technology. Therefore, many advanced countries are stepping up the technical research and development of fuel cell vehicles in recent years. [0003] Hydrogen fuel cell is through the chemical reaction of...

AI Technical Summary

Problems solved by technology

Since hydrogen itself is flammable and explosive, and the pressure of the on-board hydrogen fuel tank is as high as nearly 90MPa, the on-board hydrogen gas storage tank has certain dangers

On the other hand, the installation of the fuel cell stack and the hydrogen storage tank in a fuel cell vehicle is generally relatively separate, and the gas supply pipeline is relatively long

At the same time, because the car often bumps and vibrates during operation, it may cause the hydrogen gas supply pipeline and the seal of the fuel cell stack to become loose or damaged, resulting in hydrogen leakage, which not only wastes hydrogen fuel but also creates potential safety hazards.

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