Toyota Boshoku Kabushiki Kaisha

Haruyuki Aono

Satoshi Kawabe

Takenori Koyanagi

Naohiro Matsubara

A separator for a fuel cell includes a contact surface. Groove passages are arranged side by side in the contact surface. The groove passages include a first groove passage and a second groove passage that are adjacent to each other in an arrangement direction of the groove passages. The contact surface includes a rib located between the first groove passage and the second groove passage. The rib includes at least one wide section. The first groove passage includes at least one first contiguous section that is adjacent to the at least one wide section. The second groove passage includes at least one second contiguous section that is adjacent to the at least one wide section. A cross-sectional flow area of the first contiguous section is less than a cross-sectional flow area of the second contiguous section.

Separator for fuel cell

A fuel cell stack includes single cells stacked in a first direction. Each single cell includes a power generating unit, a first separator, and a second separator. The first separator and the second separator hold the power generating unit between the first separator and the second separator. The first separator of each single cell includes first protrusions. The second separator of each single cell includes second protrusions. A distal end of each second protrusion includes a depression that is located at a center in a second direction and extends in a third direction. A length of the depression in the second direction is greater than a length of the first protrusion in the second direction. A distal end of each first protrusion is located inside the depression.

Fuel cell stack

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.

Growing community of inventors

Aichi-ken, Japan

Haruyuki Aono