| CPC H01M 8/026 (2013.01) [H01M 8/0247 (2013.01)] | 20 Claims |
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1. A multiple perforation plate constituting separator of a fuel cell together with a flat plate, the multiple perforation plate comprising:
a perforation plate body having a wave-shaped cross-section repeating in a flow direction of reaction gas, the wave-shaped cross-section having bent lower portions, bent upper portions, and flat central portions between the bent lower portions and the bent upper portions;
virtual flow path hole central lines formed along the flat central portion of the perforation plate body and spaced apart from each other at a constant interval in a length direction corresponding to the flow direction of reaction gas, each virtual flow path hole central line extending in a width direction perpendicular to the flow direction of the reaction gas, wherein the flat central portions comprise an ascending nth flow path hole central line Cn and a descending n+1th flow path hole central line Cn+1; and
a plurality of flow path holes having expansion parts formed at both sides of a middle point in the width direction of each of the flow path holes so that a middle part of the flow path holes is wider in the flow direction than outer parts of the flow path holes, the plurality of flow path holes being formed on the flat central portion of the perforation plate body and spaced at a constant interval on the virtual flow path hole central lines in the width direction.
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