Patent ID: 8808938
Filing Date: 2014-08-19
Classification: H01M,Y02E

Abstract:
1. A fuel cell arrangement comprising: a housing; cathode channels arranged running perpendicularly to the stack direction in a first direction for cathode-side gas exchange; and a ventilation unit including a first cooling channel having an inlet and an outlet, the first cooling channel running between the at least one fuel cell and the housing in a second direction, where the cathode channels are connected to the first cooling channel for cathode gas flow entrance and the outlet is connected to the ventilation unit; a second cooling channel having at least one inlet and an outlet, the second cooling channel running in the second direction between the at least one fuel cell and the housing wherein the outlet is connected to the cathode channels; wherein the ventilation unit produces a gas flow in the first cooling channel and in the second cooling channel, so that a first pressure prevails in the first cooling channel and a second pressure prevails in the second cooling channel, wherein a difference between the first and the second pressure effects a gas flow through the cathode channels of a separator structure arranged in the cathode side, wherein the difference is such that the gas flow through the separator structure is smaller than the gas flow through the first or second cooling channel by a factor between 5 and 1000; and at least one cathode current collector and/or at least one anode current collector that projects from the active region into the first cooling channel and up to an inner edge of the housing.