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US 2026/0302305 A1Published application
Fuel cell stack
AssigneeHonda Motor Co., Ltd.
InventorsNaoki INOUE, Tomoki HORI, Yu YAMAGUCHI, Tadashi NISHIYAMA
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Abstract
A fuel cell stack includes a resin insulator molded on each of a pair of end plates. Each of the pair of end plates includes a convex part protruding from a cell-side end surface of a base part. The resin insulator includes a base part covering portion covering at least a part of the cell-side end surface, and a convex part covering portion covering the convex part. The convex part covering portion includes a flat portion. A bead seal of a metal separator constituting a unit cell abuts against the flat portion.
Claims6
A fuel cell stack comprising:
- a cell stack body including a plurality of unit cells;
- a pair of end plates sandwiching the cell stack body in a stacking direction of the cell stack body, the pair of end plates being made of a metal material;
- and a resin insulator molded on a surface of each of the pair of end plates facing toward the cell stack body,
- wherein each of the pair of end plates includes a base part and a convex part protruding from a cell-side end surface of the base part facing toward the cell stack body, and the convex part includes a top surface having a flat shape,
- the resin insulator includes a base part covering portion configured to cover at least a part of the cell-side end surface and a convex part covering portion configured to cover the convex part,
- the convex part covering portion includes a flat portion configured to cover the top surface and facing toward the cell stack body,
- a metal separator constituting each of the unit cells includes a bead seal having a ridge shape protruding toward the cell-side end surface, and
- the bead seal abuts against the flat portion.
5 more elements
Dependencies are inferred from the claim text.