Gas path structure of solid oxide fuel cell and adjustment method thereof

Abstract

The invention discloses a gas path structure of a solid oxide fuel cell and an adjustment method thereof. The solid oxide fuel cell is formed by multiple cells which are combined in series and parallel and acts as the battery stack of a generating unit. Each cell is provided with a gas duct for transporting gas required for reaction. The gas path structure comprises a cavity, a porous baffle, a gas intake manifold and an gas outlet manifold. The cavity surrounds the battery stack in a sealing way and the cavity has an insulating effect. The gas intake manifold is connected on one side of the cavity. The gas outlet manifold is connected on the other side of the cavity. The porous baffle is arranged in the cavity and close to the gas intake manifold. The porous baffle simply and ingeniouslychanges the pressure field in the cavity of the battery stack, thereby changing the distribution of the gas flow, achieving the goal that the gas flow uniformly flows through the gas duct of each celland providing sufficient fuel gas and air for each cell.

Description

technical field [0001] The invention relates to the technical field of fuel cell power generation, in particular to a gas circuit structure of a solid oxide fuel cell and an adjustment method thereof. Background technique [0002] The solid oxide fuel cell system is an efficient and clean electrochemical power generation device. It has attracted people's attention because of its advantages of cleanliness, high efficiency, and no noise. Especially in recent years, the rapid development of distributed energy stations has made solid oxide fuel cells There is a wider application space. However, the consistency of the solid oxide fuel cells produced under the current process is not high enough, the flow resistance of the gas grooves of each cell is inconsistent, and the flow rate of some cells may be too small, or even become a dead angle, and no gas passes through. Phenomenon. After many times of operation and cooling and heating cycles, this problem may become more serious, a...

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Problems solved by technology

[0005] Aiming at the deficiencies in the prior art, the present invention provides a solid oxide fuel cell gas path structure with reasonable structural design and simplicity, and provides an adjustment method for the gas path, which economically and efficiently solves the problem of solid oxide fuel cell gas path structure. The problem of uneven gas path and the degradation of battery stack performance

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