Method of manufacturing metal separator for fuel cell
AssigneeHonda Motor Co., Ltd.
InventorsYasuhiro Watanabe, Masaaki Sakano
Life of this patent
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Abstract
A method of manufacturing a metal separator for a fuel cell includes providing an opening in a metal plate which is to be a part of the metal separator for the fuel cell, integrally molding a sealing member on both sides of an outer peripheral edge of the metal plate to cover the opening, and trimming the sealing member to remove a covering portion of the sealing member that covers the opening and to provide a fluid communication hole, at least one of a fuel gas, an oxidant gas, and a cooling medium being to pass through the fluid communication hole in the fuel cell.
Claims23
A method of manufacturing a metal separator for a fuel cell, the method comprising:
- providing an opening in a metal plate which is to be a part of the metal separator for the fuel cell;
- integrally molding a sealing member on both sides of an outer peripheral edge of the metal plate to cover the opening to form a covering portion that covers the opening, the covering portion including a thick portion and a thin portion;
- and
- trimming the sealing member at the thick portion of the covering portion to remove the covering portion of the sealing member and to provide a fluid communication hole by removing the thin portion and only a part of the thick portion, at least one of a fuel gas, an oxidant gas, and a cooling medium being to pass through the fluid communication hole in the fuel cell, the trimming preventing the formation of a burr on the fluid communication hole,
- wherein the thick portion is a continuous portion of the covering portion.
A method comprising:
- providing an opening in a metal plate of a metal separator for a fuel cell;
- integrally molding a sealing member on opposite surfaces of an outer peripheral edge of the metal plate so as to cover the opening to form a covering portion that covers the opening, the covering portion including a thick portion and a thin portion;
- and
- trimming the sealing member at the thick portion of the covering portion to remove the covering portion of the sealing member and to provide a fluid communication hole that extends through the opening of the metal plate of the metal separator by removing the thin portion and only a part of the thick portion, wherein a remaining portion of the sealing member covers peripheral edges of the opening of the metal plate of the metal separator, the trimming preventing the formation of a burr on the fluid communication hole,
- wherein the thick portion is a continuous portion of the covering portion.
A method of manufacturing a metal separator for a fuel cell, the method comprising:
- providing an opening in a metal plate which is to be a part of the metal separator for the fuel cell;
- integrally molding a sealing member on both sides of an outer peripheral edge of the metal plate to cover the opening to form a covering portion that covers the opening, the covering portion including a thick portion and a thin portion;
- and
- trimming the sealing member by applying a trimming blade to the thick portion of the covering portion to remove the covering portion of the sealing member and to provide a fluid communication hole by removing the thin portion and only a part of the thick portion, at least one of a fuel gas, an oxidant gas, and a cooling medium being to pass through the fluid communication hole in the fuel cell,
- wherein the thick portion is a continuous portion of the covering portion.
Dependencies are inferred from the claim text.