Abstract: A bipolar plate for an electrochemical system, such as an electrolyzer, having a separator plate and a support element firmly connected to the separator plate. The separator plate comprises a through-opening as an inlet or outlet for a fluid, a fluid guiding structure with a plurality of protrusions arranged at the through-opening for guiding the fluid between the plurality of protrusions, a bead arrangement which partially surrounds the through-opening, and a flow field with an electrochemically active region. The fluid guiding structure is arranged between the through-opening and the flow field such that the fluid can flow from the through-opening through the fluid guiding structure to the flow field or vice versa. The support element is configured to bridge the fluid guiding structure.

Abstract: A single-layer bipolar plate for an electrolyser. The single-layer bipolar plate comprises a flow field which is shaped substantially as an equilateral n-sided polygon. The flow field being predefined by an embossed channel structure which defines a plurality of channels for a reaction medium. Here, n may be an even natural number. The single-layer bipolar plate comprises at least four media apertures, wherein, on each of four different sides of the flow field, in each case at least one media aperture is arranged between the flow field and a respective outer edge of the bipolar plate.

Abstract: A separator plate for an electrolyser, to a method for producing same, and to a die pair for producing such a separator plate and for carrying out said method. A separator plate for an electrolyser, having a first metal layer, the separator plate comprising an active region having at least one multitude of flow channels for a reaction medium. The flow channels being embossed into the first metal layer and having a channel bottom and channel walls arranged on both sides of the channel bottom. Webs are arranged between adjacent channel walls of adjacent flow channels. At least some of the channel bottoms of the multitude of flow channels, the surface of the first metal layer opposite the channel bottom is at least partially substantially planar in a cross-section transverse to the direction of extension of the respective flow channel.

Abstract: A separator plate for an electrochemical system, an electrolyzer, a bipolar plate comprising such a separator plate, an electrolyzer comprising such a separator plate, and to tooling for producing such a separator plate. The separator plate comprising a flow area having a plurality of integrally formed support structures. An outer contour of the support structures in each case comprises: a first circular arc-shaped portion and a second circular arc-shaped portion, wherein a circular arc center point of the first circular arc-shaped portion and a circular arc center point of the second circular arc-shaped portion are arranged at a distance from each other on a longitudinal axis of the respective sup-port structure, and a joining portion which joins together the first circular arc-shaped portion and the second circular arc-shaped portion, wherein a width of the joining portion is smaller than a diameter of the first and/or second circular arc-shaped portion.

Abstract: A separator plate is disclosed for an electrochemical system. The plate comprises a multitude of mutually parallel and adjacent channels that are designed to guide a fluid at least along a region of the separator plate, wherein the channels each have a depth, a longitudinal extent, a channel base and two sidewalls, wherein the following conditions apply to at least one of the channels: the depth of the channel in a first region of the channel is essentially constant along the longitudinal extent, the channel base in the first region of the channel is essentially flat and the depth of the channel in a transition region of the channel that adjoins the first region decreases along the longitudinal extent, as a result of which a channel base continuation in the transition region is curved.