Abstract: A seal arrangement for sealing a space in a plate stack arrangement, wherein the plate stack arrangement can be, for example, a fuel cell stack or part of a fuel cell stack, and the space can be a space lying therein, wherein the seal arrangement comprises the following: a seal element for delimiting the space in at least one direction, and a compression protection unit for protecting the seal element in relation to irreversible deformation during compression of the plate stack arrangement along a plate stack longitudinal axis.

Abstract: In order to provide a bipolar plate for a fuel cell unit, by which an optimized supply and/or evacuation of a fluid medium to and/or from a membrane-electrode unit is achieved, it is proposed that, on a bipolar plate body, multiple flow channels are configured, which form at least one flow field for a fluid medium, a bypass channel is formed between an edge flange and a delimiting device, and at least one passage is configured, whereby a fluidic connection is provided between the flow field and the bypass channel, wherein at least one interference element is provided in the bypass channel, which forms an overflow region for the fluid medium.

Abstract: To provide a method by means of which stacks of metal sheets can be produced in an easy and efficient way, it is proposed that the method comprises the following: coating one or more metal sheets with a bonding substance; bonding multiple metal sheets to form a sheet-metal laminate by a first activation of the bonding substance; cutting up the sheet-metal laminate to produce multiple sheet-metal laminate units and/or cutting out multiple sheet-metal laminate units from the sheet-metal laminate; and bonding the multiple sheet-metal laminate units to form a stack of metal sheets by a second activation of the bonding substance, wherein the bonding substance comprises a resin material and an elastomer material.

Abstract: In order to create a bipolar plate for an electrochemical unit of an electrochemical device comprising a plurality of electrochemical units that follow one another along a stack direction, wherein the bipolar plate comprises the following: at least one medium passage opening, which forms a constituent part of a medium channel that extends along the stack direction through the electrochemical device; a sealing bead, which extends around the medium passage opening; a plurality of medium inlets, which are arranged on an inner side of the sealing bead facing toward the medium passage opening and which enable medium to flow into an interior space of the sealing bead; and a plurality of medium outlets, which are arranged on an outer side of the sealing bead facing away from the medium passage opening and which enable medium to flow out of the interior space of the sealing bead, in which bipolar plate the pressure loss that occurs when the medium flows from the medium passage opening through the medium inlets, t

Abstract: In order to create a bipolar plate for an electrochemical unit of an electrochemical device comprising a plurality of electrochemical units that follow one another along a stack direction, wherein the bipolar plate comprises the following: an anode gas passage opening; a cathode gas passage opening; an electrochemically active region of the bipolar plate, which comprises an anode gas flow field and a cathode gas flow field; an anode gas distribution region, by way of which the anode gas passage opening is in fluidic connection with the anode gas flow field; and a cathode gas distribution region, by way of which the cathode gas passage opening is in fluidic connection with the cathode gas flow field; wherein the anode gas distribution region and/or the cathode gas distribution region comprises distribution structures, which delimit distribution channels formed between two respective distribution structures, in which bipolar plate the anode gas is distributed an uniformly as possible to the distribution chan

Abstract: In order to create a method for connecting, by a material joint, a first bipolar plate layer and a second bipolar plate layer of a bipolar plate for an electrochemical unit of an electrochemical device comprising a plurality of electrochemical units that follow one another along a stack direction, wherein the method comprises the following: bringing the first bipolar plate layer and the second bipolar plate layer into contact with one another at one or more contact regions of the bipolar plate layers; applying a clamping force to the first bipolar plate layer and the second bipolar plate layer by means of one or more clamping tools; and connecting the first bipolar plate layer and the second bipolar plate layer by a material joint along a connection seam; which method makes it possible to reliably connect the two bipolar plate layers to one another without deteriorating the flow properties of the bipolar plate or impairing the supporting function of the bipolar plate for parts of the electrochemical units

Abstract: In order to provide a method by means of which stacks of laminations can be produced in a simple and efficient manner, it is provided that the method comprises the following: coating one or more laminations with a bonding agent; bonding a plurality of laminations to form a sheet metal laminate by means of a first activation of the bonding agent; dividing the sheet metal laminate to produce a plurality of sheet metal laminate units and/or separating out a plurality of sheet metal laminate units from the sheet metal laminate; and bonding the plurality of sheet metal laminate units to form a stack of laminations by means of a second activation of the bonding agent, one or more parameters differing from one another in the first activation and the second activation.

Abstract: To provide a method by means of which stacks of metal sheets can be produced in an easy and efficient way, it is proposed that the method comprises the following: coating one or more metal sheets with a bonding substance; bonding multiple metal sheets to form a sheet-metal laminate by a first activation of the bonding substance; cutting up the sheet-metal laminate to produce multiple sheet-metal laminate units and/or cutting out multiple sheet-metal laminate units from the sheet-metal laminate; and bonding the multiple sheet-metal laminate units to form a stack of metal sheets by a second activation of the bonding substance, wherein the bonding substance comprises a resin material and an elastomer material.

Abstract: In order to provide a method by means of which stacks of laminations can be produced in a simple and efficient manner, it is provided that the method comprises the following: coating one or more laminations with a bonding agent; bonding a plurality of laminations to form a sheet metal laminate by means of a first activation of the bonding agent; dividing the sheet metal laminate to produce a plurality of sheet metal laminate units and/or separating out a plurality of sheet metal laminate units from the sheet metal laminate; and bonding the plurality of sheet metal laminate units to form a stack of laminations by means of a second activation of the bonding agent, one or more parameters differing from one another in the first activation and the second activation.