Bipolar plate for a fuel cell

摘要

This invention is related to a bipolar plate for a fuel cell, the bipolar plate comprises a central area and a surrounding area, wherein the central area has a first side surface and a second side surface opposed to the first side surface, the central area is in a form of continuous corrugation which defines a plurality of grooves that are substantially parallel with and complementary to each other on each of the first side surface and the second side surface. The thickness of the bipolar plate of this invention can be very thin so as to decrease the dimension and weight of the fuel cell. The grooves are connected to enlongated holes in the surrounding area by channels which are formed in a longitudinal direction on a first side and in a direction transverse to a longitudinal direction on a second side. The cost for manufacturing the fuel cell is also reduced by the simplified process of this invention.