The invention relates to a fuel cell device comprising a fuel cell unit (10) which comprises at least two fuel cells (12, 14) and an interconnection unit (16) which is provided to serially interconnect the at least two fuel cells (12, 14). According to the invention, the at least one interconnection unit (16) comprises at least two layers (18, 20) which are made from different materials.

The invention relates to a fuel cell device comprising a fuel cell unit (10) which comprises at least two fuel cells (12, 14) and an interconnection unit (16) which is provided to serially interconnect the at least two fuel cells (12, 14). According to the invention, the at least one interconnection unit (16) comprises at least two layers (18, 20) which are made from different materials.

The disclosure relates to a bipolar plate for an electrochemical system, and to an electrochemical system comprising a plurality of bipolar plates. The electrochemical system may be, for example, a fuel cell system, an electrochemical compressor, a redox flow battery, or an electrolyser. The bipolar plate comprising separator plates, an inlet, and an outlet. A separator plate comprising an active region.

The disclosure relates to a bipolar plate for an electrochemical system, and to an electrochemical system comprising a plurality of bipolar plates. The electrochemical system may be, for example, a fuel cell system, an electrochemical compressor, a redox flow battery, or an electrolyser. The bipolar plate comprising separator plates, an inlet, and an outlet. A separator plate comprising an active region.

A connecting module for connecting an opening of a fuel cell stack and a nozzle introduces and discharges a fuel gas or cooling water. The connecting module includes a link part disposed adjacent to the opening of the fuel cell stack and configured to be slid leftwards and rightwards. The link part has a guide in an inclination direction. The connecting module also includes a connection part connected to the guide of the link part to be slid along the guide such that the connection part is moved forwards and rearwards during a leftward and rightward sliding operation of the link part. The connection part is configured to be coupled to the opening of the fuel cell stack when being moved forwards and to deviate from the opening of the fuel cell stack when being moved rearwards.

A connecting module for connecting an opening of a fuel cell stack and a nozzle introduces and discharges a fuel gas or cooling water. The connecting module includes a link part disposed adjacent to the opening of the fuel cell stack and configured to be slid leftwards and rightwards. The link part has a guide in an inclination direction. The connecting module also includes a connection part connected to the guide of the link part to be slid along the guide such that the connection part is moved forwards and rearwards during a leftward and rightward sliding operation of the link part. The connection part is configured to be coupled to the opening of the fuel cell stack when being moved forwards and to deviate from the opening of the fuel cell stack when being moved rearwards.

A separator plate (1) for media guiding in a fuel cell, with at least one through-opening (2, 3, 4, 5, 6, 7) for supplying and at least one through-opening (2, 3, 4, 5, 6, 7) for discharging a medium, with a channel structure (12) for uniformly guiding the medium, as well as with distribution regions (9) which connect the through-openings (2, 3, 4, 5, 6, 7) with the channel structure (12). At least one of the distribution regions (9) surrounds at least one of the through-openings (2, 3, 4, 5, 6, 7) associated with it around the entire perimeter.

A PolyMET plate for a Proton Exchange Membrane (PEM) fuel cell is disclosed. The PolyMET plate includes a body made of a polymeric material and comprise a first surface and a second surface opposite to the first surface. The PolyMET plate includes a plurality of in-plane conductive pathways on the first surface defining a reaction area on the first surface, wherein the plurality of in-plane conductive pathways is formed as a coating of conductive material on the first surface. The PolyMET plate also includes a through-plane conductive pathway formed of a solid conductive material extending between the first surface and second surface, such that the through-plane conductive pathway is electrically coupled to the in-plane conductive pathways.

The invention relates to a separator plate for an electrochemical system, comprising a first and a second plate, which are essentially congruently arranged on top of one another. The first and/or second plates furthermore include at least one elongated projection, which protrudes on opposite sides from a plate plane of the separator plate and extends along the plate plane from an outer edge to an interior of the separator plate so that the projection of the first plate and/or the projection of the second plate, if necessary together, form a receptacle for a connector pin. The projection of the first plate or the projection of the second plate includes an indentation directed toward the respective opposite plate for fixing the connector pin in the receptacle in a force-fit and/or form-locked manner.

The invention relates to a separator plate for an electrochemical system, comprising a first and a second plate, which are essentially congruently arranged on top of one another. The first and/or second plates furthermore include at least one elongated projection, which protrudes on opposite sides from a plate plane of the separator plate and extends along the plate plane from an outer edge to an interior of the separator plate so that the projection of the first plate and/or the projection of the second plate, if necessary together, form a receptacle for a connector pin. The projection of the first plate or the projection of the second plate includes an indentation directed toward the respective opposite plate for fixing the connector pin in the receptacle in a force-fit and/or form-locked manner.