Abstract: A fuel cell stack includes power generation cells, which are stacked in a vertical direction. Each power generation cell is configured to generated power by using gas. Each power generation cell includes a first hole and a second hole. The first holes of the power generation cells form a gas manifold. The gas manifold extends in the vertical direction, and the gas flows through the gas manifold. The second holes of the power generation cells form a passage. The passage is adjacent to the gas manifold and extends in the vertical direction. The gas manifold and the passage are connected to each other at upper ends of the gas manifold and the passage.

Abstract: A fuel cell stack includes power generation cells stacked in a vertical direction and a discharge passage defining member extending in the vertical direction. Each of the power generation cells includes a gas hole. The gas holes of the power generation cells define a gas manifold which extends in the vertical direction and through which gas flows. Part of an upper wall surface of the gas manifold includes a water collection portion configured to collect water from the upper wall surface. The discharge passage defining member is located below the water collection portion of the gas manifold and defines a discharge passage out of which the water dropping from the water collection portion is discharged.

Abstract: A fuel cell stack includes power generation cells, which are stacked in a vertical direction. Each power generation cell is configured to generated power by using gas. Each power generation cell includes a first hole and a second hole. The first holes of the power generation cells form a gas manifold. The gas manifold extends in the vertical direction, and the gas flows through the gas manifold. The second holes of the power generation cells form a passage. The passage is adjacent to the gas manifold and extends in the vertical direction. The gas manifold and the passage are connected to each other at upper ends of the gas manifold and the passage.