Flat fuel cell assembly with air channel defined by case

摘要

A flat fuel cell assembly including a MEA, a cathode porous current collector, an anode porous current collector, a gas barrier material layer, a case, and at least one air baffle is provided. The cathode porous current collector and the anode porous current collector are disposed at two opposite sides of the MEA. The gas barrier material layer is disposed at a side of the cathode porous current collector and has at least one opening for exposing a surface of the cathode porous current collector. The case is disposed at a side of the MEA, the gas barrier material layer is disposed between the case and the MEA, and an air channel is located between the gas barrier material layer and the case. Additionally, the air baffle disposed within the air channel.

主权项

1. A flat fuel cell assembly, comprising:
a membrane electrode assembly (MEA); a cathode porous current collector; an anode porous current collector, the cathode porous current collector and the anode porous current collector being disposed at two opposite sides of the MEA; a gas barrier material layer disposed at a side of the cathode porous current collector and having at least one opening for exposing a surface of the cathode porous current collector; a case disposed at a side of the MEA, the gas barrier material layer being disposed between the case and the MEA, and an air channel being located between the gas barrier material layer and the case; a water absorbent material layer disposed on the case, wherein the water absorbent material layer is between the case and the gas barrier material layer and is spaced apart from the gas barrier material layer to form the air channel; and an air fan for generating an air flow, wherein the air flows from an air inlet of the air channel to an air outlet of the air channel, wherein the air outlet of the air channel is not blocked when the air fan is turned off and the ratio of A/Δx is less than or equal to 0.073 cm per cm2 area of MEA while Ax indicates a distance from the air outlet to the MEA, with the unit as centimeter; and A indicates a cross-sectional area of the air outlet.