Abstract: A method for assembling an electrochemical cell stack is proposed, which has the following steps: assembling a first stack component (140), which has a first adjustment opening (115), on an electrochemical substack through cooperation between the first adjustment opening (115) and a first adjustment device (110). Repositioning the first adjustment device (110) in the construction direction of the electrochemical substack for locally adjusted assembly of a second stack component, which has a corresponding first adjustment opening for locally adjusted assembly.

Abstract: A voltage monitoring arrangement is provided for an electric cell stack including a plurality of electric plates sandwiching insulation layers, wherein the voltage monitoring arrangement is configured to monitor a voltage of at least one electric plate of the electric cell stack, wherein the voltage monitoring arrangement includes at least one voltage monitoring unit with a contact element being in contact with the at least one electric plate, a first signal line being configured to supply a first signal from a signal source to a processing unit, wherein the voltage monitoring unit includes a first signal path interrupting element interposed in the first signal line, wherein the first signal path interrupting element is connected to the contact element and is configured to forward the first signal dependent on a voltage being present at the at least one electric plate, wherein the voltage monitoring arrangement includes a support element being designed to be arranged within the electric cell stack, wherein th

Abstract: A membrane electrode assembly for a fuel cell stack includes at least a cathode, an anode and a membrane therebetween, wherein the membrane electrode assembly further has a basic shape which substantially resembles the shape of a bipolar plate of a fuel cell unit onto which the membrane electrode assembly is intended to be placed, wherein the membrane electrode assembly further includes at least one distinctive alignment projection, which protrudes from a circumference of the basic shape and wherein the distinctive alignment projection has a size and/or shape which is adapted to be contacted by an alignment tool for aligning the membrane electrode assembly in the fuel cell stack, as well as a fuel cell stack including such a membrane electrode assembly and an alignment tool or fuel cell stack housing for aligning and/or housing such a fuel cells stack.

Abstract: Disclosed is an electric cell stack comprising a plurality of electric plates sandwiching insulation layers, wherein at least one of the plurality of electric plates a voltage monitoring element for monitoring a voltage of said electric plate is arranged, wherein said at least one electric plate at which the electric voltage monitoring element is arranged has at least one through hole, wherein at and/or in the through hole the voltage monitoring element is arranged.

Abstract: Disclosed is an electric cell stack comprising at least a plurality of electric plates and a plurality of insulating layers, wherein the stack of the plurality of electric plates and insulating layers are alternatingly stacked in such a way that the electric plates are separated by insulating layers, and the electric plates and/or the insulating layers are aligned to each other, wherein each electric plate has a first alignment through hole and a second alignment through hole, wherein at and/or in the alignment through holes inner alignment elements are provided for aligning the electric plates and the insulating layers, wherein each inner alignment element has a base plate and an adjusting portion protruding from the base plate, wherein the adjusting portion of one alignment element extends through at least a first electric plate, a first insulating layer, a second electric plate and a second insulating layer.

Abstract: A manufacturing arrangement for a fuel cell stack includes at least a first alignment station having a first alignment structure for receiving a bipolar plate and a second alignment structure for arranging a membrane electrode assembly at one side of the bipolar plate, preferably on top of the bipolar plate, in a predefined orientation for aligning the bipolar plate and the membrane electrode assembly, whereby a pre-assembled fuel cell unit is provided; a fastening station for fastening the membrane electrode assembly to the bipolar plate, whereby an assembled fuel cell unit is provided; and a second alignment station having at least one third alignment structure for aligning the assembled fuel cell units for providing a fuel cell stack, as well as a method for manufacturing a fuel cell stack, and a fuel cell stack having been manufactured by such an arrangement and/or method.

Abstract: The invention relates to a method of attaching a gasket (4) to a bipolar plate (12). The method comprises the steps of applying and aligning a first gasket foil (4a) to a second gasket foil (4b) having connection recesses (8), connecting the first gasket foil (4a) to the second gasket foil (4b), so that the gasket (4) is formed, placing the gasket (4) on the bipolar plate (12) so that the second gasket film (4b) with the bonding recesses (8) abuts the bipolar plate (12) and performing an embossing step in which an embossing force is applied with an embossing tool (20) in the region of the connecting recesses (8) so that an embossed adhesive point (24) is formed and the first gasket foil (4a) is bonded to the bipolar plate (12) via an adhesive means (16) arranged in the connecting recess (8) on the first gasket foil (4a).

Abstract: An electric connector for fuel cell stack voltage monitoring includes at least two separate units, each unit including a plurality of pins, each pin being adapted to contact a plate of the fuel cell stack for monitoring a fuel cell stack voltage. The first pin of each unit is adapted to provide a measurement of a reference voltage.

Abstract: A fuel cell stack includes a plurality of bipolar plates wherein each bipolar plate has at least an anode plate and a cathode plate, and a plurality of membrane electrode assemblies being sandwiched by the bipolar plates, wherein each membrane electrode assembly has at least an anode and a cathode which are separated by a membrane, wherein the bipolar plates sandwich the membrane electrode assembly in such a way that the anode of the membrane electrode assembly faces the anode plate of a first bipolar plate and the cathode of the same membrane electrode assembly faces the cathode plate of a second bipolar plate; and wherein a cell pitch of the fuel cell stack is defined by a distance of two adjacent membrane electrode assemblies, wherein at borders of the bipolar plates of the fuel cell stack, an overall distance between the anode plate of the first bipolar plate and the cathode plate of the second bipolar plate, which is measured over the sandwiched membrane electrode assembly, is equal to the cell pitch of

Abstract: A manufacturing arrangement for a fuel cell stack includes at least a first alignment station having a first alignment structure for receiving a bipolar plate and a second alignment structure for arranging a membrane electrode assembly at one side of the bipolar plate, preferably on top of the bipolar plate, in a predefined orientation for aligning the bipolar plate and the membrane electrode assembly, whereby a pre-assembled fuel cell unit is provided; a fastening station for fastening the membrane electrode assembly to the bipolar plate, whereby an assembled fuel cell unit is provided; and a second alignment station haying at least one third alignment structure for aligning the assembled fuel cell units for providing a fuel cell stack, as well as a method for manufacturing a fuel cell stack, and a fuel cell stack having been manufactured by such an arrangement and/or method.

Abstract: A membrane electrode assembly for a fuel cell stack includes at least a cathode, an anode and a membrane therebetween, wherein the membrane electrode assembly further has a basic shape which substantially resembles the shape of a bipolar plate of a fuel cell unit onto which the membrane electrode assembly is intended to be placed, wherein the membrane electrode assembly further includes at least one distinctive alignment projection, which protrudes from a circumference of the basic shape and wherein the distinctive alignment projection has a size and/or shape which is adapted to be contacted by an alignment tool for aligning the membrane electrode assembly in the fuel cell stack, as well as a fuel cell stack including such a membrane electrode assembly and an alignment tool or fuel cell stack housing for aligning and/or housing such a fuel cells stack.

Abstract: An electric connector for fuel cell stack voltage monitoring includes at least two separate units, each unit including a plurality of pins, each pin being adapted to contact a plate of the fuel cell stack for monitoring a fuel cell stack voltage. The first pin of each unit is adapted to provide a measurement of a reference voltage.