Fuel cell capable of automatically controlling hydrogen quantity

Abstract

A fuel cell capable of automatically controlling the hydrogen quantity comprises a fuel cell body, an electromagnetic valve and a switching power supply, and a pressure detection mechanism and a control circuit are also arranged. Branch pipes are arranged at the upper end and the lower end of the hydrogen inlet channel pipe respectively, one end of each branch pipe is connected with the exhaust end of one electromagnetic valve, the gas inlet ends of the two electromagnetic valves are connected with the two ends of a three-way pipe, and the third end of the three-way pipe is connected with a hydrogen pipe. Holes are respectively formed in the upper part and the lower part of the hydrogen inlet channel pipe. The two sets of detection mechanisms are respectively mounted at the outer side endsof the two holes. The switching power supply and the control circuit are arranged in the element box and are connected with the electromagnetic valve and the pressure detection mechanism. According to the utility model, the hydrogen amount in the upper end or the lower end of the hydrogen inlet channel pipe is prevented from being too large as much as possible, so that the hydrogen amount in theupper end and the lower end of the hydrogen inlet channel pipe is unbalanced, the power generation performance of the plurality of single batteries is influenced, the hydrogen amount entering the plurality of single batteries is approximately consistent, and the voltage of the plurality of single batteries is balanced. Based on the above, the method has a good application prospect.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a fuel cell that automatically controls the amount of hydrogen. Background technique [0002] Fuel Cell (Fuel Cell) is a power generation device that directly converts the chemical energy present in fuel and oxidant into electrical energy. It has high power conversion efficiency (theoretical power generation efficiency can reach 85% to 90%) and environmental protection. Advantages, so it has a wide range of applications in national defense, transportation, and industry. Due to the low voltage of a single battery, generally around 1.2V, the main structure of a fuel cell is composed of multiple single cells connected in series to form a fuel cell battery pack. The higher the voltage, the more the number of single cells connected in series. A fuel cell that uses hydrogen as fuel. Compared with other fuel cells, it has higher power density, and the discharged by-product is water or water ...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the limitations of the existing hydrogen fuel cell due to the structure, the hydrogen inlet passage tubes connected in parallel with several single cells cannot effectively ensure the uniform amount of hydrogen entering several single cells, and the disadvantages of manually adjusting the upper and lower ends of the hydrogen inlet passage pipes The amount of hydrogen will bring inconvenience to the user, and it cannot effectively ensure the stability of the amount of hydrogen entering the hydrogen intake channel pipe. Each branch pipe is equipped with an electromagnetic valve, and a pressure detection mechanism is installed at the upper and lower ends of the hydrogen gas intake channel pipe. The two sets of pressure detection mechanisms can monitor the amount of hydrogen in the upper and lower ends of the hydrogen gas intake channel pipe in real time, and Under the action of the two control circuits respectively, the amount of hydrogen gas entering the upper and lower ends of the hydrogen gas intake channel tube can be controlled respectively within the set range, thereby ensuring that the amount of hydrogen gas entering several single cells is close to the same as possible, and several A fuel cell that automatically controls the amount of hydrogen in a single cell voltage balance

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