Abstract: An assembly for an electrochemical system, comprising a separator plate with at least one layer and a membrane electrode assembly, MEA, the MEA having: an electrochemically active region, a frame-like reinforcing layer surrounding the electrochemically active region, and at least one tab for positioning the MEA relative to the separator plate and/or for fastening the MEA to the separator plate, wherein the layer has a first flat side and a second flat side opposite the first flat side, wherein the tab is connected at one side to the frame-like reinforcing layer and its free end is arranged on the side of the second flat side of the layer, wherein the frame-like reinforcing layer is arranged on the first flat side of the layer.

Abstract: The present disclosure relates to a separator plate for an electrochemical system, comprising a first individual plate and a second individual plate connected to the first individual plate, wherein channels of the individual plates are nested in each other. The present disclosure also relates to an arrangement for an electrochemical system, comprising a plurality of separator plates.

Abstract: A separator plate for an electrochemical system comprising a first individual plate which comprises two first channels for conducting media which run next to one another and which are separated from one another at least in sections by a web formed between the first channels. The web comprising a lowered portion and a rear side of the base of the lowered portion is connected to a rear side of the base of the second channel in the contact zone of the individual plates via a welded connection. The welded connection comprises a first end region and a first curved portion, wherein the first curved portion runs, and is curved, in such a way that a virtual straight line running perpendicularly through the first end region intersects the welded connection at least two times.

Abstract: The present disclosure relates to a sealing arrangement, comprising: an elastomeric sealing element, which comprises a foamed material containing microspheres, and a metal layer having a surface structuring, the surface structuring comprising a plurality of depressions, wherein the sealing element is configured as a coating of the metal layer and is arranged at least in some areas on the surface structuring, wherein a concentration of the microspheres in the sealing element, measured perpendicular to the surface of the metal layer, is inhomogeneous. The disclosure additionally relates to a plate assembly, to an electrochemical system, and to a method for producing the sealing arrangement.

Abstract: A bipolar plate for an electrochemical system, comprising a first separator plate and a second separator plate. The first and the second separator plate each comprising: at least two through-openings, an active region, and a distribution or collection region with structures for guiding a reaction medium between one of the through-openings and the active region. The structures for guiding the reaction medium in the distribution or collection region comprise flow channels for the respective reaction medium, said flow channels being separated from each other by webs. Adjacent to the first through-opening, the separator plates bear directly against each other in a contact plane. The distribution or collection region of the first separator plate and/or the distribution or collection region of the second separator plate have at least one compensating region.

Abstract: An assembly for an electrochemical system comprising a separator plate and a support element is disclosed. The separator plate is designed as a single layer and as a stack terminating plate. The electrochemical system may be a fuel cell system, an electrochemical compressor, an electrolyzer, a humidifier for an electrochemical system, or a redox flow battery.

Abstract: A separator plate for an electrochemical system, a bipolar plate comprising two such separator plates, an electrochemical cell, and an electrochemical system comprising a multiplicity of such separator plates or bipolar plates are disclosed. By way of example, the electrochemical system may be a fuel cell system, an electrochemical compressor, a redox flow battery or an electrolyzer. The separator plate for an electrochemical system, comprising at least one through-opening and at least one bead arrangement. An edge portion stretches between the at least one bead arrangement and a border of the at least one bead arrangement. The edge portion has recesses and projections starting from the border and alternating successively along a border contour in some portions, wherein the recesses project downwards out of the plate plane and the projections project upwards out of the plate plane.

Abstract: Electrochemical systems, separator plates and methods for production thereof, the separator plate comprising: an active region and at least one first through-opening for supplying a reaction medium to flow channels, and one second through-opening for conducting the reaction medium away from flow channels. At least one through-opening enclosed by a roller-embossed sealing bead. Roller embossing a first layer in a first transportation direction and roller embossing a second layer in a second transportation direction, and arranging the two metal layers opposite one another relative to the respective transportation directions. Two roller-embossed sealing beads are arranged one above the other.

Abstract: A separator plate comprising a first individual plate and a second individual plate, wherein the separator plate comprises: an electrochemically active region, at least one through-opening, and a bead arrangement. The bead arrangement arranged around the through-opening for sealing off the through-opening, A bead interior fluidically connected to the through-opening. At least one first aperture extending substantially parallel to a plate plane defined by the separator plate. At least one conveying channel which opens into a region of the first individual plate containing the first aperture and fluidically connects the bead interior to the first aperture.

Abstract: The present document relates to a cell for an electrochemical system, comprising two separator plates, a membrane electrode assembly (MEA) arranged between the separator plates, and at least one flexible electrical cable for tapping off an electrical voltage. The separator plates, the MEA and the cable can be compressed with one another, the flexible cable has a first end portion and a second end portion, the first end portion is arranged for fastening between the separator plates, and the second end portion protrudes laterally from the cell.

Abstract: A flow plate for a humidifier, having flow fields on both mutually opposite flat sides of the flow plate is described. The flow plate proposed here has a multiplicity of through-openings, wherein the through-openings are designed such that a perpendicular projection of the through openings onto a plane oriented parallel to the plane of the flat surface of the flow plate has a non-vanishing area, so that gas passing through the through-openings effects, at least in part, mixing of a gas guided in the flow fields perpendicular to the plane of the flat surface of the flow plate. The through-openings improve the power of the humidifier, thus permitting a lower number of flow plates and therefore a more lightweight and more compact design.

Abstract: An electrochemical, media-guiding system, a contact element for electrically and mechanically contacting such a plate, and a transmission device containing such a contact element. The present disclosure further relates to the production of such a plate or such a contact element. A plate having at least one contact point forming a voltage take-off point, a current supply point, and/or a current take-off point. The at least one contact point having a laser-surface-treated region.

Abstract: A separator plate comprising a metal layer. The metal layer having at least one bead and the at least one bead having two bead flanks. At least one of the bead flanks having segments with different angles to the plane of the metal layer.

Abstract: An electrochemical system having two metallic separator plates, an electrochemical cell arranged between the separator plates and sealed by at least one sealing element, and fixing elements for fixing the separator plates. The fixing elements comprise at least two fixing elements which are designed as integral with the first or with the second separator plate, which differ from the at least one sealing element, are spaced apart from the at least one sealing element parallel to the plate planes of the separator plates, and project at least in sections beyond the plate planes of the separator plates in a stacking direction. The first fixing element is thereby supported on the second fixing element in such a way that the second fixing element prevents a displacement of the first separator plate relative to the second separator plate.

Abstract: A humidifier having a multiplicity of metallic flow plates and a multiplicity of water transfer membranes, in particular for humidifying process gas for an electrochemical system or for HVAC applications is described. The humidifier has a construction in which the metallic flow plates and the water transfer membranes are arranged such that in each case at most one of the single-layer flow plates is arranged between adjacent water transfer membranes of the stack; and at least one of the water transfer membranes is in each case accommodated in a sealing manner, in particular clamped in a sealing manner, between the mutually facing sealing lines of adjacent flow plates of the stack. The humidifier has lower production costs, greater efficiency and lower weight.

Abstract: Systems and methods for separator plates, bipolar plates, stacks of plates, and electrochemical systems, comprising at least one through-opening for the passage of a fluid and a rim that delimits the through-opening. The rim having a curved course and a rectilinear course that adjoins the curved course. A bead arrangement extends around the curved course and the rectilinear course. An edge portion spans the bead arrangement and the rim, so that the bead arrangement is situated at a distance from the rim. A cutout formed in the curved course, so that a minimum distance of the bead arrangement from the rim is smaller in the curved course than in the rectilinear course.

Abstract: The invention relates to a separator plate for an electrochemical system, comprising: at least one first through-opening for conducting a reaction medium through the separator plate; an active region having structures for guiding a reactor medium along a flat side of the separator plate; and a first sealing structure, surrounding the first through-opening, for sealing the first through-opening. The first sealing structure has a first passage for conducting a reaction medium through the first sealing structure, which passage points in a direction facing away from the active region. The invention also relates to a bipolar plate for an electrochemical system, which bipolar plate comprises the described separator plate.

Abstract: An assembly for an electrochemical system, which comprises a first separator plate, a second separator plate, and a membrane electrode assembly arranged between the separator plates for forming an electrochemical cell between the separator plates. A stack comprising a plurality of such assemblies, and an electrochemical system comprising a plurality of such assemblies and/or a stack. The electrochemical system may be a fuel cell system, an electrochemical compressor, an electrolyzer, a redox flow battery, or a humidifier for an electrochemical system.

Abstract: An assembly for an electrochemical system, comprising a separator plate with at least one layer and a membrane electrode assembly, MEA, the MEA having: an electrochemically active region, a frame-like reinforcing layer surrounding the electrochemically active region, and at least one tab for positioning the MEA relative to the separator plate and/or for fastening the MEA to the separator plate, wherein the layer has a first flat side and a second flat side opposite the first flat side, wherein the tab is connected at one side to the frame-like reinforcing layer and its free end is arranged on the side of the second flat side of the layer, wherein the frame-like reinforcing layer is arranged on the first flat side of the layer.

Abstract: A plate assembly for an electrochemical system, comprising an end plate, a first separator plate which adjoins the end plate and which has a plate plane, a second separator plate which adjoins the first separator plate, the second separator plate having at least one media-guiding second through-opening, wherein an orthogonal projection of the second through-opening onto the first separator plate perpendicular to the plate plane defines a projection area, wherein the first separator plate has in the region of the projection area no through-opening or a first through-opening, the area of which is less than 20% of the area of the second through-opening.