An improved connector and thermal management method for a flat solid oxide fuel cell stack

Abstract

The invention discloses an improved connector for a flat solid oxide fuel cell stack and a heat management method. Ribs, a partition is arranged between two adjacent parallel ribs, the lower surface of the partition is a heat-absorbing surface, the catalyst Ni is arranged at intervals on the lower surface of the partition, and the partition is provided with air holes at the tail; the substrate, the partition and the parallel ribs The enclosed flow channel is the heat management area, the flow channel surrounded by the separator, parallel ribs and battery PEN layer is the flow area, the left side of the heat management area is the gas inlet, and the left side of the flow area is the gas outlet. The improved connecting piece of the present invention has a sub-regional functional design, combined with the structural design of directional arrangement of the catalyst at a specific position on the heat-absorbing surface and the opening of air holes at the rear of the separator, and the joint adjustment of the mixture gas composition and inlet velocity, greatly improving the battery stack. The inhomogeneity of internal temperature distribution improves the output performance of the battery stack.

Description

technical field [0001] The invention relates to a flat solid oxide fuel cell, in particular to an improved connector for a flat solid oxide fuel cell stack, and belongs to the technical field of solid oxide fuel cells. Background technique [0002] Solid Oxide Fuel Cell (SOFC for short) is a device that can directly convert chemical energy into electrical energy, and has the advantages of high energy utilization rate and flexible fuel. A SOFC unit consists of PEN layers (anode, electrolyte, cathode) and connectors. The connecting piece is a part covered by the SOFC cathode and anode with flow channels, and is an important part of the SOFC. The main functions of the connector include: 1. Connect the anode and cathode of adjacent single cells; 2. Act as a conductor for electron transmission between adjacent single cells; 3. The flow channels carved on it are the flow of reactants and products The channel has the function of distributing gas. The structural design of the con...

AI Technical Summary

Problems solved by technology

The structure of the connector using parallel straight channels is simple and easy to process, but the function of this connector is only to conduct electricity and provide a flow channel for the gas, which not only has a limited effect, but also causes uneven gas distribution, which affects the overall performance of the battery and heat dissipation. - mechanical stability

[0004] At present, the research on connectors is mainly focused on improving the problem of uneven gas distribution and the selection of thermal / conductive materials. The development of other functions of connectors has not been involved.

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