MANUFACTURING METHOD OF FUEL CELL
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United States of America Patent
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Mar 25, 2021
app pub date -
Jul 31, 2020
filing date -
Sep 24, 2019
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Abstract
A manufacturing method of a fuel cell includes a welding step in which a plurality of protrusions of each of a pair of separators is welded with the protrusions overlapping each other such that laser welding is intermittently performed on a plurality of welding positions by repeating one laser irradiation operation by a predetermined length. Each of the separators has, on a surface facing a membrane-electrode-gas diffusion layer assembly, the protrusions such that the surface is corrugated in a surface direction.
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