Solid oxide fuel cell stack

Abstract

The invention discloses a solid oxide fuel cell stack. The solid oxide fuel cell stack comprises a cell base, a gas distribution plate, cell repeating units, a negative end plate and a positive end plate, the gas distribution plate is fixed in the battery base, and a fuel cavity is formed between the gas distribution plate and a bottom plate of the battery base; the bottom ends of the negative endplate and the positive end plate are fixed in the cell base; the number of the cell repeating units is more than two, the cell repeating units are sequentially arranged between the negative end plateand the positive end plate side by side, and a gap is reserved between every two adjacent cell repeating units and used for air to penetrate through. The bottom ends of the cell repeating units are fixed on the upper surface of the gas distribution plate through a first sealing piece; the cell repeating units, the negative end plates and the positive end plates are connected through connectors toform electric series connection between two adjacent cell repeating units; a fuel inlet is formed in one side of the battery base, fuel is introduced into a fuel cavity in the battery base through the fuel inlet, and then the fuel is distributed into each cell repeating unit for reaction power generation.

Description

technical field [0001] The invention belongs to the technical field of new energy, in particular to a solid oxide fuel cell stack. Background technique [0002] Solid Oxide Fuel Cell (SOFC) is a new type of energy conversion device that operates at medium and high temperatures and can directly use various hydrocarbon fuels such as hydrogen, carbon monoxide, natural gas, liquefied petroleum gas, coal gas and biomass gas, and has the ability to use fuel Wide adaptability, high energy conversion efficiency, all solid state, modular assembly, zero pollution and other advantages. SOFC has the highest energy conversion technology in the field of conventional power generation technology, and its all-solid structure brings flexibility in stack design. The mainstream design of SOFC includes tube type and flat type; the flat type structure has the advantages of short current path, small internal resistance, high power density, etc., but it is relatively difficult to seal. The tubula...

AI Technical Summary

Problems solved by technology

However, the preparation of the flat tube battery involves the basic molding of the support body, the sequential sintering of the electrolyte, the connector, and the cathode. The process is complicated, the cost is high, and the yield control is difficult.

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