Automatic cycling feeding apparatus for liquid fuel cell

Abstract

The invention relates to an automatic recycle feed device of a liquid-fuel cell, which belongs to the field of liquid-fuel batteries, in particular to an automatic recycle feed device for liquid-fuelcells. The automatic recycle feed device is formed by an automatic recycle feed device and a liquid-fuel cell. A gas-liquid separating cap is adhered in the upper end hole of a casing through fluid sealant in the automatic recycle feed device, the upper portion of the inner cavity of the casing is provided with a total liquid storage container, the lower portion of the inner cavity is provided with a reaction zone fuel cavity, and a cross rib is arranged between the total liquid storage container and the reaction zone fuel cavity. An anode polar plate, a membrane electrode, a cathode polar plate and a cathode end plate are mounted on the right of an anode end plate in the liquid-fuel cell in turn, and the automatic recycle feed device and the liquid-fuel cell are fixed together through a bolt and a nut. The automatic recycle feed device can automatically control liquid fuel to be injected into the reaction zone fuel cavity by gas generated when a fuel cell is working through a feed pipe from the total liquid storage container, which needs not external power, and has the advantages of simple structure, low production cost, stable work and reliable performance.

Description

technical field [0001] The invention belongs to the field of liquid fuel cells, and in particular relates to a device for automatic circulation feeding of liquid fuel cells. Background technique [0002] A fuel cell is a device that directly converts chemical energy into electrical energy. Because it is not limited by the "Carnot cycle", its theoretical conversion efficiency is much higher than that of traditional heat engines. In recent decades, due to the increasing attention to energy and environmental issues, countries around the world, such as the United States and Japan, have increased their investment in fuel cell research and development. Liquid fuel cells have become a hot research field at home and abroad because of their high energy density, easy portability and storage of fuel, and suitability for portable electronic products. The fuel supply of current liquid fuel cells mostly requires a fuel pump driven by an external power source, which consumes a large amoun...

AI Technical Summary

Problems solved by technology

Literature (Q.Ye, T.S.Zhao, "A natural-circulation fuel delivery system for direct methanol fuel cells", Journal of Power Sources, 147, 2005, pp.196-202) proposes that the direct methanol fuel cell anode has a serpentine flow field Self-circulation system, but because the concentration of methanol fuel from the bottom of the anode reaction zone of the fuel cell to the top of the reaction zone through the serpentine channel is already very low, and the content of carbon dioxide bubbles is high, resulting in uneven fuel cell reaction and easy damage to the membrane electrode

Literature (Y.H.Chan, T.S.Zhao, R.Chen, C.Xu, "Aself-regulated passive fuel-feed system for passive direct methanol cells", Journal of Power Sources, 176, 2008, pp.183-190) utilizes direct methanol The pressure generated by the accumulation of carbon dioxide gas generated by the fuel cell pushes the one-way valve to open to supplement the liquid methanol fuel, but the mechanism is complicated and the production cost is high

Images