Abstract: A separator for fuel cells includes a number of lands arranged in columns and configured to contact and support a membrane electrode assembly and a number of channels configured to form a movement path of a reaction gas. Each channel is located between two adjacent lands. Branch parts of the lands are arranged in a first column and in an adjacent second column in a moving direction of the reaction gas. The branch parts of the lands in the first column and in the second column are arranged in a discontinuous form. Width-directional or height-directional lengths of the lands are selectively changed so that a flow rate deviation of the moving reaction gas occurs.

Abstract: In an embodiment a separator arrangement includes a first separator having a straight channel flow path and a second separator having a wavy channel flow path, wherein the first and second separators are repeatedly stacked, wherein the second separator includes a land extension formed in a folded area of a land portion adjacent to a non-reaction flow path located at a top of the second separator in a reaction area of each of the first separator and the second separator.

Abstract: A separator for fuel cells includes first channels that each include a first reduced region and a first enlarged region repeatedly located within a first general region. The first channels are configured to form a flow path of a reaction gas on a base plate. Second channels are arranged to be spaced apart from the first channels in parallel by a width-directional length of lands. The second channels include a second reduced region and a second enlarged region repeatedly located along the flow path within a second general region. The first enlarged region has the same shape as the second enlarged region. The first general region has the same cross-sectional area as the second general region. The first enlarged region and the second enlarged region each have a cross-sectional area corresponding to a cross-sectional area of the first general region.

Abstract: An embodiment separator for fuel cells includes first and second diffusion sections adjacent to inlet and outlet manifolds, respectively, and a flow path region including a plurality of patterns for guiding a flow of a reaction gas, wherein the patterns include first patterns including first and second lands arranged in a first column and second patterns including third and fourth lands arranged in a second column, in a second direction perpendicular to a first direction from the first diffusion section to the second diffusion section, the first and fourth lands are arranged in a discontinuous wave type and the second and third lands are arranged in the discontinuous wave type, and a point between the first and fourth lands adjacent to each other and a point between the second and third lands adjacent to each other are offset from each other with respect to the first direction.

Abstract: A separator assembly for a fuel cell able to prevent deformation of a separator due to a flow pressure of a reaction gas at a first reaction gas inlet, and a fuel cell stack including the same includes: a first separator on one face of which is formed with a first reactive surface over which first reaction gas flows to allow for first reaction gas and second reaction gas to react and on the other face of which is formed with a first cooling surface where cooling occurs; a second separator on one face of which is formed a second reactive surface positioned to face the first reactive surface of the first separator, over which second reaction gas flows to allow for first reaction gas and second reaction gas to react, and on the other face of which is formed a second cooling surface where cooling occurs; and a reinforcing plate which is positioned in a region of the first separator where first reaction gas enters, preventing deformation of the first separator.

Abstract: In an embodiment, a separator for a fuel cell includes a plurality of flow channels configured to flow gas or product water, and which are provided at a plurality of points with projections that project in first and second directions, wherein each of the plurality of flow channels is provided at set points thereof with a corresponding one of the projections but an adjacent flow channel is not provided with the projections at a point corresponding to the set point of the former flow channel, and some of the projections which project in one direction among the first and second directions are aligned on one straight line.

Abstract: A separator assembly for a fuel cell and a fuel cell stack including the same, is uniformly capable of forming a surface pressure of a region where a reaction gas flows when a stack is stacked by adjusting a height and shape of a gasket line for each region in which the reaction gas flows.

Abstract: A separator with integrated gasket including a first gasket part bonded to a separator by seating the separator formed with a burring part on a lower core, moving and assembling a mold including a slide core, and injecting molten resin into a cavity and then cooling it, and a second gasket part bent from the first gasket part and not bonded to the separator may be molded and taken out. The fastening part and the burring part may be fitted and fastened by rotating the second gasket part of the taken-out separator with the integrated gasket.

Abstract: Disclosed is a separator for a fuel cell. The separator includes a separator main body formed in a plate shape such that a first surface thereof forms a reaction surface and a second surface thereof forms a cooling surface, each of which has a reaction area at a center portion thereof and formed with multiple manifold areas through which multiple manifolds to which a reaction gas or a coolant is respectively introduced or discharged pass to opposite sides of the reaction area, and in which a pair of diffusion areas that diffuse the reaction gas or the coolant are formed between the reaction area and the pair of manifold areas, and includes multiple flow path guide gaskets formed on the pair of diffusion areas and configured such that multiple diffusion flow paths dispersed to the reaction area from at least a pair of the manifolds respectively formed on the pair of manifold areas are formed.

Abstract: A separator assembly for a fuel cell able to prevent deformation of a separator due to a flow pressure of a reaction gas at a first reaction gas inlet, and a fuel cell stack including the same includes: a first separator on one face of which is formed with a first reactive surface over which first reaction gas flows to allow for first reaction gas and second reaction gas to react and on the other face of which is formed with a first cooling surface where cooling occurs; a second separator on one face of which is formed a second reactive surface positioned to face the first reactive surface of the first separator, over which second reaction gas flows to allow for first reaction gas and second reaction gas to react, and on the other face of which is formed a second cooling surface where cooling occurs;, and a reinforcing plate which is positioned in a region of the first separator where first reaction gas enters, preventing deformation of the first separator.