A liquid circuit built-in aluminum-air fuel cell unit and battery stack

Abstract

The invention relates to a liquid circuit built-in aluminium air fuel cell monomer and a cell stack. The liquid circuit built-in aluminium air fuel cell monomer comprises a first flat grid mesh, a first air electrode, a matrix frame, a second air electrode and a second flat grid mesh which are sequentially arranged, wherein the first air electrode is used as a cathode; the matrix frame is provided with a side port for enabling an aluminium alloy electrode used as an anode to be inserted in; a first electrolyte pipe orifice and a second electrolyte pipe orifice are also formed outside the matrix frame. The cell stack comprises a plurality of liquid circuit built-in aluminium air fuel cell monomers which are connected in series and a gap is reserved between every two adjacent cell monomers; support pillars are arranged at the edges of the first flat grid meshes; the first electrolyte pipe orifice in each cell monomer is connected with the second electrolyte pipe orifice in the adjacent cell monomer; the first and second air electrodes in each cell monomer are connected with the aluminium alloy electrode used as the anode in the adjacent cell monomer. According to the invention, a fuel cell pipeline is simple, the engineering degree is high, the guarantee is simple, the operation is convenient, the processing consistency is good, and the recycling and reusing can be realized.

Description

technical field [0001] The invention belongs to the technical field of fuel cells, and in particular relates to a liquid-path built-in aluminum-air fuel cell unit and a cell stack. Background technique [0002] Aluminum-air battery uses active metal aluminum as fuel source, air or oxygen as oxidant, alkaline solution or neutral salt solution as electrolyte, and converts chemical energy stored in metal aluminum into electrical energy through electrochemical reaction. Although the aluminum-air fuel cell has many advantages, its current monomer structure has the following disadvantages: First, the traditional monomer liquid delivery is realized by adding many electrolyte liquid pipes, and each monomer has a liquid inlet channel. The pipes and one outlet liquid pipe have complex structures, low degree of engineering, complicated guarantee, inconvenient operation, and many liquid pipe interfaces; the second is that the positive and negative electrodes of the traditional monomer a...

AI Technical Summary

Problems solved by technology

Although the aluminum-air fuel cell has many advantages, its current monomer structure has the following disadvantages: First, the traditional monomer liquid delivery is realized by adding many electrolyte liquid pipes, and each monomer has a liquid inlet channel. The pipes and one outlet liquid pipe have complex structures, low degree of engineering, complicated guarantee, inconvenient operation, and many liquid pipe interfaces; the second is that the positive and negative electrodes of the traditional monomer are connected by welding the connecting wires on the The conductive current collector of the air electrode is realized from above. This method has a low degree of engineering, and is bonded after manual welding. The manufacturing process of the monomer is complicated, inconvenient to operate, and not beautiful. The third is that the traditional monomer air electrode and the monomer matrix frame are sealed with ABS plastic Glue for bonding, this method is cumbersome to operate, the processing consistency is poor, and when the single air electrode fails, the single base frame cannot be reused

In addition, on the website of the China Patent Office, with the keywords of "built-in liquid circuit" and "fuel cell", relevant patents were searched, but no relevant invention cases were found; similarly, "built-in liquid circuit" and "fuel cell" as the subject heading, and no literature related to the case has been found in authoritative literature databases at home and abroad

[0004] In view of the structural and functional limitations of the existing patented technology, the actual application of aluminum-air batteries often appears to be complicated in pipelines, low in engineering, complicated in guarantee, inconvenient in operation, numerous in liquid pipe connections, and consistent in processing Poor performance and cannot be recycled

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