Closed alkaline electrolyte tank and metal air fuel cell system

Abstract

The invention discloses a closed alkaline electrolyte box and a metal air fuel cell system. The closed alkaline electrolyte box comprises a box body, a floating roof ball layer, a first filter layer and a second filter layer, wherein the floating roof ball layer, the first filter layer and the second filter layer are sequentially arranged in the box body from top to bottom; the floating roof ball layer is used for inhibiting volatilization of moisture in an electrolyte; the first filter layer is of a fence structure, and the second filter layer is of a sieve pore structure; the diameter of a floating roof ball of the floating roof ball layer is greater than the aperture of the first filter layer, and the aperture of the first filter layer is greater than the aperture of the second filter layer; and a liquid outlet and a liquid return port are formed in the box body, the liquid return port is located above the floating roof ball layer, and the liquid outlet is located below the second filter layer. According to the invention, the working efficiency of the metal air fuel cell can be effectively improved, the acidification of the electrolyte in a storage process is remarkably reduced, and the service life of the electrolyte is prolonged.

Description

technical field [0001] The invention relates to the technical field of metal-air fuel cells, and more specifically, the invention relates to a closed alkaline electrolyte tank and a metal-air fuel cell system. Background technique [0002] During the use of the metal-air fuel cell, since the metal fuel cell module itself does not have an electrolyte storage device, the electrolyte tank is required to store the electrolyte, and the circulation pump is used to ensure the circulation of the electrolyte in the battery module. The electrolyte is transported to the electrode, and the electrode reaction is carried out to provide electric energy. [0003] The metal-air fuel cell electrochemical reaction process will produce precipitation, which will reduce the fluidity and conductivity of the alkaline electrolyte, and even block the inlet and outlet of the alkaline electrolyte tank, thereby reducing the service life and efficiency of the metal fuel cell. At the same time, during th...

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Problems solved by technology

[0005] In order to solve the problems that the existing alkaline electrolyte is easy to acidify, and the precipitation generated by the electrochemical reaction is easy to block the inlet and outlet of the electrolyte tank, the present invention innovatively provides a closed alkaline electrolyte tank, which can effectively improve the metal-air fuel cell. Excellent work efficiency, significantly reduce the acidification of the electrolyte during storage, and prolong the service life of the electrolyte

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