Comprehensive management system and method for metal-air fuel cell electrolyte

Abstract

The invention discloses a comprehensive management system and method for metal-air fuel cell electrolyte, and the system comprises an electrolyte-protection liquid circulating system which is used forsupplying or recycling the electrolyte or the protection liquid from a cell; a product filtering and separating system which is used for filtering and separating reaction products in the electrolyte;a control unit which is used for controlling the working states of a pump, a valve and a switch in the electrolyte-protection liquid circulating system through a liquid level detection unit and charging a circulation path of the electrolyte and the protection liquid through the working combination of the valve, the pump and the switch in the pipeline. The system can effectively improve the working performance of a metal-air fuel cell, significantly reduce the self-corrosion in the parking process, and prolong the service life of the cell.

Description

technical field [0001] The invention relates to the technical field of metal-air fuel cells, in particular to a comprehensive electrolyte management system and method for metal-air fuel cells. Background technique [0002] Metal-air fuel cell technology is a clean energy technology that directly converts the chemical energy of metals into electrical energy. It has the advantages of high energy conversion efficiency, low cost, convenient fuel storage and portability, safety and pollution-free, etc. It is used in vehicle power, mobile power , Communication base station backup power and other fields have a good application prospect. [0003] Specifically, the working principle of the metal-air fuel cell is that the metal undergoes an electrochemical oxidation reaction in the electrolyte in the anode chamber to generate metal oxides; the oxygen in the air undergoes an electrochemical reduction reaction in the catalytic layer of the air electrode to generate hydroxide ions , the...

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Problems solved by technology

[0008] In addition to the degradation of battery performance caused by the precipitation of metal oxides, there are other problems caused by the electrolyte during battery operation and parking: 1. Alkaline solution has a corrosive effect on battery components, especially the air electrode, which will damage the electrode structure and cause battery damage. Performance decline and life attenuation; 2. Alkaline electrolyte reacts with carbon dioxide in the air to produce carbonate crystals, which will hinder the diffusion layer pores of the air electrode and cause battery performance to decline; 3. Hydrogen evolution occurs between metal electrodes and alkaline electrolyte The reaction consumes metal fuel, which makes the battery energy significantly reduced after long-term parking

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