Solid oxide fuel cell

Abstract

The invention discloses a solid oxide fuel cell, and the fuel cell comprises an outer shell, an inner shell, a plurality of cell tubes and a top cover with a fuel gas inlet; a plurality of cathode exhaust ports are formed in the bottom of the outer shell, the top cover is mounted at the top of the outer shell, one end of each cell tube is a sealed end, and the other end of each cell tube is an open end. The plurality of cell tubes are respectively embedded into the first through holes corresponding to the battery tube fixing discs, an inner cavity is formed between the inner shell and the battery tube fixing disc positioned at the top of the inner shell, the sealed ends of the plurality of battery tubes are positioned in the inner shell, one ends of a plurality of ventilation tubes with two open ends are respectively embedded into the bottoms of the battery tubes, and the other ends of the plurality of ventilation tubes are respectively embedded into the second through holes corresponding to the ventilation tube fixing discs. According to the invention, airflows are separated from each other and are not crossed, so the number of sealing structures at high-temperature working parts is reduced, the air leakage risk is reduced, gas entering and exiting from the anode flows reversely, the reaction contact time is prolonged, the power generation efficiency is high, and the thermal efficiency and the service life of the battery are high.

Description

technical field [0001] The invention relates to the field of fuel cells, in particular to a solid oxide fuel cell. Background technique [0002] Solid oxide fuel cell (Solid Oxide Fuel Cell, referred to as SOFC) belongs to the third generation of fuel cells. Chemical power plant. [0003] SOFC has high power density and greater energy output under the same volume / weight; no noise and zero pollution, only chemical reactions occur when SOFC works, no mechanical movement structure, and the main discharge is water; it can be modularized and can Several single cells are assembled into a battery pack in series or parallel to meet the application requirements of different scenarios; there are many types of fuels available and easy to obtain, and hydrogen, hydrocarbons (methane), methanol, etc. can be directly used as fuels without using precious metals as fuels Catalyst; all solid structure, no risk of pollutant leakage. [0004] Patent Publication Nos. CN 106887617 A and CN 106...

AI Technical Summary

Problems solved by technology

[0004] Patent Publication Nos. CN 106887617 A and CN 106816618 A disclose two types of fuel cells respectively. The battery tubes used are open-ended at both ends, so that the high-temperature working parts need to be sealed more, and when the battery starts and stops, it needs to be heated and sealed. Poor sealing is prone to occur when the temperature is cyclically raised and lowered, making it more difficult to seal the battery as a whole, and the straight-through structure does not recover enough energy from the exhaust gas, making the thermal efficiency of the battery relatively low

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