Flat type SOFC (Solid Oxide Fuel Cell) monocell partial performance test device

Abstract

The invention discloses a flat type SOFC (Solid Oxide Fuel Cell) monocell partial performance test device, which comprises a current collector pedestal and a current collector. The current collector comprises more than one partition collector unit; the partition collector unit is connected with the collector pedestal through an electroconductive connector; the electroconductive connector is also served as a binding post to be connected with a current voltage lead; a temperature sensor is mounted on the partition collector unit; an insulation sleeve is sheathed outside a conductive body; and insulating materials are filled in empty cavities between the current collector pedestal and the partition collector unit as well as the neighboring partition collector unit. A plurality of partition collector units are adopted for realizing monocell partial performance testing; and each partition collector unit is provided with a respective gas flow channel, thereby guaranteeing a uniform gas flowfield simultaneously when not influencing the current collecting effect, so that, the monocell partial electrical performance and temperature distribution can be quickly and effectively tested.

Description

technical field [0001] The invention relates to the SOFC single cell testing technology, in particular to a testing device for the partial performance of the SOFC single cell. Background technique [0002] Known as green energy, solid oxide fuel cells (SOFC, solid oxide fuelcell) generally have two structures: tubular and flat. Due to the advantages of relatively low operating temperature, high power density, simple preparation process, and low cost, flat-panel Formula SOFC has become the focus of current research at home and abroad. [0003] The SOFC stack is composed of multiple single cells connected in series. In order to increase the power of the single cell and reduce the contact resistance and the probability of gas leakage in the stack, the area of ​​the single cell is gradually increasing, and the existing size is from 10×10mm 2 to 30×30mm 2 wait. In the actual application process, a series of problems caused by the size of the large-area single cell will occur: ...

AI Technical Summary

Problems solved by technology

In the actual application process, a series of problems caused by the size of the large-area single cell will occur: First, due to the uneven distribution of the gas concentration on the surface of the single cell, the local electrochemical performance is different, and some parts may have insufficient gas supply. Second, the difference in gas concentration on the surface of a single battery makes the temperature distribution of the entire battery surface uneven, which affects the stability of the battery

The test method is only limited to the overall performance of the battery, and cannot characterize the local performance of large-area batteries.

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