A fuel cell system includes a plurality of stacked bipolar plate assemblies. Each of the plurality of stacked bipolar plate assemblies includes a first subgasket including a first peripheral edge. The first subgasket supports a first membrane electrode assembly (MEA). A second subgasket including a second peripheral edge. The second subgasket supports a second MEA. A bipolar plate is disposed between the first subgasket and the second subgasket. The bipolar plate has a first side defining a first plurality of passages receptive of a cathode fluid, a second side defining a second plurality of passages receptive of an anode fluid, and a plurality of coolant passages defined between the first subgasket and the second subgasket. A seal bead extends around the bipolar plate. The seal bead seals against the first subgasket and the second subgasket. An energy attenuating bead extends about the bipolar plate spaced from the seal bead.

A fuel cell system includes a plurality of stacked bipolar plate assemblies. Each of the plurality of stacked bipolar plate assemblies includes a first subgasket including a first peripheral edge. The first subgasket supports a first membrane electrode assembly (MEA). A second subgasket including a second peripheral edge. The second subgasket supports a second MEA. A bipolar plate is disposed between the first subgasket and the second subgasket. The bipolar plate has a first side defining a first plurality of passages receptive of a cathode fluid, a second side defining a second plurality of passages receptive of an anode fluid, and a plurality of coolant passages defined between the first subgasket and the second subgasket. A seal bead extends around the bipolar plate. The seal bead seals against the first subgasket and the second subgasket. An energy attenuating bead extends about the bipolar plate spaced from the seal bead.

A fuel cell system includes a plurality of stacked bipolar plate assemblies. Each of the plurality of stacked bipolar plate assemblies includes a first subgasket including a first peripheral edge. The first subgasket supports a first membrane electrode assembly (MEA). A second subgasket including a second peripheral edge supports a second MEA. A bipolar plate is disposed between the first subgasket and the second subgasket. The bipolar plate has a first side defining a first plurality of passages receptive of a cathode fluid, a second side defining a second plurality of passages receptive of an anode fluid, and a plurality of coolant passages defined between the first subgasket and the second subgasket. A seal bead extends around the bipolar plate. The seal bead seals against the first subgasket and the second subgasket. A compliant energy attenuating bumper extends about the bipolar plate spaced from the seal bead.

A fuel cell system includes a plurality of stacked bipolar plate assemblies. Each of the plurality of stacked bipolar plate assemblies includes a first subgasket including a first peripheral edge. The first subgasket supports a first membrane electrode assembly (MEA). A second subgasket including a second peripheral edge supports a second MEA. A bipolar plate is disposed between the first subgasket and the second subgasket. The bipolar plate has a first side defining a first plurality of passages receptive of a cathode fluid, a second side defining a second plurality of passages receptive of an anode fluid, and a plurality of coolant passages defined between the first subgasket and the second subgasket. A seal bead extends around the bipolar plate. The seal bead seals against the first subgasket and the second subgasket. A compliant energy attenuating bumper extends about the bipolar plate spaced from the seal bead.

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.

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.

Embodiments provide a bipolar plate for a battery, which can enhance battery efficiency by reducing a contact resistance in contact with an electrode, and a redox flow battery having the same are provided. According to at least one embodiment, there is provided a bipolar plate including a thermoplastic portion formed on at least a part thereof to be brought into contact with an electrode and having conductivity, wherein the thermoplastic portion having the conductivity is morphologically matched with the electrode.

Embodiments provide a bipolar plate for a battery, which can enhance battery efficiency by reducing a contact resistance in contact with an electrode, and a redox flow battery having the same are provided. According to at least one embodiment, there is provided a bipolar plate including a thermoplastic portion formed on at least a part thereof to be brought into contact with an electrode and having conductivity, wherein the thermoplastic portion having the conductivity is morphologically matched with the electrode.

The invention relates to a method for producing a bipolar plate (5), comprising the following steps: a. providing two planar components (7), which are present in particular in a stacked manner, b. integrally bonding the two planar components (7), in particular by welding, in a joining plane (34), wherein, prior to integrally bonding, internal stresses (9) are introduced into at least one of the two planar components (7). The invention also relates to a fuel cell (1) comprising a bipolar plate (5) produced according to this method.

The invention relates to a method for producing a bipolar plate (5), comprising the following steps: a. providing two planar components (7), which are present in particular in a stacked manner, b. integrally bonding the two planar components (7), in particular by welding, in a joining plane (34), wherein, prior to integrally bonding, internal stresses (9) are introduced into at least one of the two planar components (7). The invention also relates to a fuel cell (1) comprising a bipolar plate (5) produced according to this method.