A visualization device and method for fluid distribution of a fuel cell bipolar plate flow field

Abstract

The invention relates to a visualization device and method for fluid flow and distribution of a fuel cell bipolar plate flow field. The device includes a transparent end plate, an anode plate or a cathode plate, an MEA, a bipolar plate, a bottom plate, a fluid supplying apparatus and a high-speed camera. The anode plate or cathode plate has a special structure design. A flow field groove part is partially hollowed out, and the anode plate or cathode plate is adhered to the surface of the transparent end plate to form a flow field. During using, the transparent end plate, the anode plate or the cathode plate, the MEA, the bipolar plate and the bottom plate are assembled to form the cell, the fluid supplying apparatus injects a fluid into a fluid inlet of the transparent end plate, the fluid flows into the flow field through the inlet, and the flowing and distribution states of the fluid in the flow field are shot by the high-speed camera.

Description

technical field [0001] The invention relates to a visualization device and method for fluid flow and distribution in a bipolar plate flow field of a fuel cell. Background technique [0002] Proton exchange membrane fuel cells use perfluorosulfonic acid solid polymers as electrolytes, platinum / carbon or platinum-ruthenium / carbon as electrocatalysts, hydrogen or other substances as fuels, air or pure oxygen as oxidants, and gas flow channels Graphite or surface-modified metal plates are bipolar plates. Bipolar plates are one of the key components of fuel cells. The flow field structure directly affects whether each part of the electrode can obtain uniform and sufficient fuel, and whether the oxidant and reaction products can be released in time. Out of the battery body, the design of the flow field structure can be studied by visualization methods. The existing technology of fuel cell bipolar plate visualization research is mainly through the transparent glass plate and the b...

AI Technical Summary

Problems solved by technology

The existing technology of fuel cell bipolar plate visualization research is mainly through the transparent glass plate and the bipolar plate to form a visualization device, through the transparent bipolar plate to observe the flow and distribution of the fluid on the bipolar plate, such as ZL200710012312.4, through A vapor-liquid mixed fluid with a certain flow rate and temperature is given at the inlet and outlet of the transparent end plate, and the camera records the flow of the fluid in the flow field. The problem with this technology is that the transparent end plate and the bipolar plate are directly combined, and the dual Fluid flow and distribution state after contact between the plate and MEA

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