FUEL CELL

摘要

A fuel cell includes a membrane electrode assembly, a first metal separator, a second metal separator, linear protrusions, and embossed protrusions. The first metal separator is stacked on the membrane electrode assembly. The second metal separator is stacked on the first metal separator to define a coolant channel between the metal separators. The first metal separator includes wave-shaped protrusions projecting from the first metal separator by a first height to define to form the coolant channel. The linear protrusions are connected to both distal ends of each of the wave-shaped protrusions. The linear protrusions project from the first metal separator by a second height smaller than the first height. The embossed protrusions are connected to tip ends of the linear protrusions. The embossed protrusions project from the first metal separator by a third height larger than the second height to be in contact with the second metal separator.

主权项

1. A fuel cell comprising:
a membrane electrode assembly in which electrodes are disposed on both sides of an electrolyte membrane; and metal separators stacked on the membrane electrode assembly, wherein a coolant channel is formed between a first metal separator and a second metal separator that are adjacent to each other, the coolant channel allowing a coolant to flow in a direction along an electrode surface, wherein the first metal separator includes
wave-shaped protrusions between each pair of which a wave-shaped channel groove is formed, each of the wave-shaped protrusions having a wave shape in plan view, the wave-shaped channel groove being included in the coolant channel,linear protrusions connected to both ends of each of the wave-shaped protrusions, each of the linear protrusions having a height smaller than that of each of the wave-shaped protrusions, andembossed protrusions each of which is connected to an end portion of a corresponding one of the linear protrusions, each of the embossed protrusions having a height larger than that of each of the linear protrusions and being in contact with the second metal separator.