Abstract: Method for conditioning an electrochemical cell unit (53) before putting the electrochemical cell unit (53) into operation for converting electrochemical energy into electrical energy as a fuel cell unit (1) and/or for converting electrical energy into electrochemical energy as an electrolytic cell unit (49) having stacked electrochemical cells (52) and channels for conducting a fuel and/or an electrolyte and channels for conducting an oxidizing agent and/or an electrolyte being formed in the electrochemical cell unit (53), the method having the steps of: providing a conditioning fluid; and conducting the conditioning fluid through the channels (12) for fuel and/or electrolytes and/or conducting the conditioning fluid through the channels (13) for oxidizing agents and/or electrolytes, wherein, during at least 50% of the duration of the method for conditioning the electrochemical cell unit (53), hydrogen is conducted as the conditioning fluid through the channels (13) for oxidizing agents and/or electrolytes.

Abstract: A method for forming a connection between a first battery cell (1) and a second battery cell (2), wherein, in a first method step, an adhesive (3) comprising at least one first component (31) and at least one second component (32) is applied to the first battery cell (1), wherein a first proportion (41) of the at least one first component (31) and/or a second proportion (42) of the at least one second component (32) is changed during the application of the adhesive (3) over the first battery cell (1), wherein, in a second method step, the first battery cell (1) is connected to the second battery cell (2) in such a way that an inhomogeneous material bond is formed between the first battery cells (1) and the second battery cell (2).

Abstract: The invention relates to a method for producing a membrane electrode assembly (10) for a fuel cell, wherein a membrane (1), preferably a polymer membrane, is coated on both sides with a catalytically active material in order to form a first and a second electrode (2, 3) and a sealant and/or adhesive (7) is applied to at least one end face (8) of the coated membrane (1), by means of which sealant or adhesive the coated membrane (1) is connected to two plastic films (5, 6) lying one on top of the other to form a gasket (4). The invention further relates to a membrane electrode assembly (10) and to a fuel cell comprising a membrane electrode assembly (10) according to the invention.

Abstract: A method for producing an electrochemical cell unit for converting electrochemical energy into electrical energy as fuel cell unit and/or for converting electrical energy into electrochemical energy as electrolysis cell unit comprising stacked electrochemical cells, the method comprising the following steps: making available layered components (6, 9, 10) of the electrochemical cells, namely preferably proton-exchange membranes, anodes, cathodes, preferably membrane electrode arrangements (6), preferably gas diffusion layers (9) and bipolar plates (10), stacking the layered components (6, 9, 10) to form electrochemical cells and to form a stack of the electrochemical cell unit, the bipolar plates (10) being made available such that at least one suction opening (71) is formed in each of the bipolar plates (10) and components (6, 9, 10) of the electrochemical cells are brought by suction by means of a reduced pressure in the suction openings (71) during production, such that the components (6, 9, 10) brought to

Abstract: A method for producing an electrochemical cell unit (53) for converting electrochemical energy into electric energy in the form of a fuel cell unit (1) and/or for converting electric energy into electrochemical energy in the form of an electrolysis cell unit (49), comprising stacked electrochemical cells (52). The method has the steps of: providing layered components (5, 6, 7, 8, 9, 10, 30, 51) of the electrochemical cells (52), namely preferably proton exchange membranes (5), anodes (7), cathodes (8), gas diffusion layers (9), and bipolar plates (10), and stacking the layered components (5, 6, 7, 8, 9, 10, 30, 51) in order to form electrochemical cells (52) and in order to form a stack of the electrochemical cell unit (53), wherein the gas diffusion layers (9) are provided such that the gas diffusion layers (9) comprise a magnetic material.

Abstract: Disclosed is a bipolar plate (20) for an electrochemical cell (100), in particular a fuel cell. The bipolar plate (20) includes at least one insert (21) used for connection to a membrane-electrode assembly (1).

Abstract: The invention relates to a fuel cell stack (1) comprising at least one bipolar plate (3), at least one gas diffusion layer (5) and at least one electrolyte, in particular at least one membrane (7), wherein a coating (9) is arranged as a connecting means between the at least one bipolar plate (3) and the at least one gas diffusion layer (5) and the coating (9) is electrically conductive. The invention further relates to a method for producing the fuel cell stack (1).

Abstract: Disclosed is a bipolar plate (20) for an electrochemical cell (100), in particular a fuel cell. The bipolar plate (20) includes at least one polymeric connecting element (21) for connection to a membrane-electrode assembly (1).

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: Disclosed is a membrane-electrode unit (1) for an electrochemical cell (100), wherein the membrane-electrode unit (1) comprises a frame structure (10) for accommodating a membrane (2) coated with electrodes (3, 4). The frame structure (10) comprises a first film (11) and a second film (12), between which an adhesive (13) is disposed. The first film (11) and the second film (12) are melted together in a bonding region (15).

Abstract: A method for forming a thermally conductive connection between a plurality of battery cells (2) and a temperature-regulating body (1) of a battery module (100), wherein, in a first method step, an adhesive (3) comprising at least one first component (31) and at least one second component (32) is applied to the temperature-regulating body (1) or to the plurality of battery cells (2), wherein a first proportion (41) of the at least one first component (31) and/or a second proportion (42) of the at least one second component (32) is changed during the application of the adhesive (3) over the temperature-regulating body (1) or the plurality of battery cells (2), wherein, in a second method step, the plurality of battery cells (2) is connected to the temperature-regulating body (1) in such a way that an inhomogeneous material bond is formed between the plurality of battery cells (2) and the temperature-regulating body (1).

Abstract: The present invention relates to a filter unit (100, 301) for filtering a fluid (105) for the operation of a fuel cell. The filter unit (100, 301) comprises at least one filter element (101) filled with a filter material (103) comprising cyclodextrin. The presented Invention also relates to a fuel cell system, to the use of cyclodextrin to filter a fluid for the operation of a fuel cell system, and to a method for operating a fuel cell system.

Abstract: The invention relates to an electrochemical system unit comprising a plurality of electrochemical cells that are arranged in layers side by side, each cell comprising an anode plate, a cathode plate and a sealing element, wherein the sealing element is designed to seal a space between the anode and cathode plate. Said system also comprises at least two electrochemical cells of the electrochemical system unit having different manufacturing types of the sealing elements.

Abstract: Fuel cell unit in the form of a fuel cell stack for producing electrical energy in an electrochemical manner, comprising fuel cells, the fuel cells each comprising a proton exchange membrane, an anode, a cathode, a gas diffusion layer, a bipolar plate, at least one fluid channel for the passage of a fluid, at least one seal (11) composed of a sealing material (42) for sealing off the at least one fluid channel (37), wherein particles (41) composed of a particle material (43) are arranged in the sealing material (42) of the at least one seal (11), for the purpose of extending the diffusion path (38) of the fluid which is sealed off by the at least one seal (11).

Abstract: A cell housing plate for the arrangement of round cells, comprising a cover plate arranged on the top side of the cell housing plate, and a base plate arranged opposite the cover plate on the underside of the cell housing plate, wherein the cover plate and the base plate have a plurality of cut-outs arranged opposite each other for receiving the round cells, wherein the cut-outs each have a collar pointing radially towards the inside of the cut-out for receiving a sealant, and an opening arranged inside the collar for passage of the round cells, wherein the cover plate and the base plate are arranged relative to each other such that the cut-outs of the cover plate and the opposite cut-outs of the base plate form cavities for receiving sealant for sealing the round cells which may be arranged inside the cell housing plate.

Abstract: A method for forming a thermally conductive connection between a plurality of battery cells (2) and a temperature-regulating body (1) of a battery module (100), wherein, in a first method step, an adhesive (3) comprising at least one first component (31) and at least one second component (32) is applied to the temperature-regulating body (1) or to the plurality of battery cells (2), wherein a first proportion (41) of the at least one first component (31) and/or a second proportion (42) of the at least one second component (32) is changed during the application of the adhesive (3) over the temperature-regulating body (1) or the plurality of battery cells (2), wherein, in a second method step, the plurality of battery cells (2) is connected to the temperature-regulating body (1) in such a way that an inhomogeneous material bond is formed between the plurality of battery cells (2) and the temperature-regulating body (1).

Abstract: A method for forming a connection between a first battery cell (1) and a second battery cell (2), wherein, in a first method step, an adhesive (3) comprising at least one first component (31) and at least one second component (32) is applied to the first battery cell (1), wherein a first proportion (41) of the at least one first component (31) and/or a second proportion (42) of the at least one second component (32) is changed during the application of the adhesive (3) over the first battery cell (1), wherein, in a second method step, the first battery cell (1) is connected to the second battery cell (2) in such a way that an inhomogeneous material bond is formed between the first battery cells (1) and the second battery cell (2).

Abstract: A cell housing plate for the arrangement of round cells, comprising a cover plate arranged on the top side of the cell housing plate, and a base plate arranged opposite the cover plate on the underside of the cell housing plate, wherein the cover plate and the base plate have a plurality of cut-outs arranged opposite each other for receiving the round cells, wherein the cut-outs each have a collar pointing radially towards the inside of the cut-out for receiving a sealant, and an opening arranged inside the collar for passage of the round cells, wherein the cover plate and the base plate are arranged relative to each other such that the cut-outs of the cover plate and the opposite cut-outs of the base plate form cavities for receiving sealant for sealing the round cells which may be arranged inside the cell housing plate.

Abstract: An electrochemical cell includes a prismatic cell housing including a lid plate that closes one end of the housing. The cell also includes a terminal assembly having a simple structure that is supported on the lid plate. The terminal assembly includes the lid plate, a terminal and an adhesive layer that is disposed between and secures the terminal to the lid plate. The terminal assembly includes features that allow the adhesive layer to flow in a controlled and reproducible manner over the entirety of a predetermined area without flowing beyond the predetermined area. The features result from forming a stop line in the predetermined area by applying a surface treatment to the predetermined area. The stop line delineates a desired adhesive later outer boundary and engages the adhesive so as to maintain the adhesive within the predetermined area.

Abstract: An electrochemical cell includes a prismatic cell housing including a lid plate that closes one end of the housing. The cell also includes a terminal assembly having a simple structure that is supported on the lid plate. The terminal assembly includes the lid plate, a terminal and an adhesive layer that is disposed between and secures the terminal to the lid plate. The terminal assembly includes features that allow the adhesive layer to flow in a controlled and reproducible manner over the entirety of a predetermined area without flowing beyond the predetermined area. The features result from forming a stop line in the predetermined area by applying a surface treatment to the predetermined area. The stop line delineates a desired adhesive later outer boundary and engages the adhesive so as to maintain the adhesive within the predetermined area.