| 摘要 |
A PEM fuel cell having serpentine flow field channels (66a-66j) comprising a plurality of serially-linked serpentine segments (A-E) extending between inlet (72) and exhaust (74) manifolds. Each segment has an inlet leg (76), an exit leg (78), at least one medial leg (80) therebetween and hairpin curved ends connecting the medial leg(s) to other legs of the segment. A bridging section (92) of each flow channel connects adjacent segments of the same channel one to the next. The hairpin-curved ends of the medial legs are spaced from bridging sections by different distances depending on the difference in pressure in the bridging section and the hairpin-curved ends. <IMAGE> |
