Abstract: The invention relates to a cooling system (10) for fuel cell stacks (22, 26), comprising a first cooling module (14) and a second cooling module (18). The first cooling module (14) comprises a fuel cell stack (22, 26), a supply line connection (30, 34) for connecting a supply line (38, 42) for supplying coolant to the fuel cell stack (22, 26), a discharge line connection (46, 50) for connecting a discharge line (54, 58) for discharging coolant from the fuel cell stack (22, 26), and a venting line connection (94, 98) for connecting a venting line (102, 106).

Abstract: The invention relates to a fuel cell system (100) with at least one fuel cell (90), each fuel cell (90) having a cathode inlet (92), and with a housing (50) in which the at least one fuel cell (90) is arranged, the housing (50) having at least one ventilation inlet (52) through which at least one ventilation fluid flows in and at least one outflow outlet (54) through which at least one outflow fluid flows out. The fuel cell system (100) further comprises a supply line (14) to the at least one cathode inlet (92) for providing a supply fluid from a first fluid source to the at least one cathode inlet (14), and a compressor (16) in the supply line (14) for compressing the supply fluid.

Abstract: The invention relates to a method for operating a fuel cell system (10) using a first operating mode, in which, when all of the fuel cell stacks (22, 26) are inactive, one fuel cell stack (22) is pre-heated using a coolant that is pre-heated by means of an electric heater (42) while bypassing all cooler circuits (58) of the active coolant circuits (14) via bypass lines (64) and the one pre-heated fuel cell stack (22) is activated in order to pre-heat an additional fuel cell stack (26) of the fuel cell system. Other operating modes for operating a fuel cell system are disclosed in additional embodiments.

Abstract: The invention relates to a fuel cell (2) comprising at least one membrane/electrode unit (10) comprising a first electrode and a second electrode, which electrodes are separated from one another by a membrane, and comprising at least one polar plate (40) which comprises a first distribution region (50) for distributing a fuel to the first electrode and a second distribution region (60) for distributing an oxidation agent to the second electrode. The first electrode and the second electrode of the at least one membrane electrode unit (10) are electrically connected by means of a conductor (90). The invention also relates to a fuel cell stack (5) which comprises a plurality of the claimed fuel cells (2).

Abstract: The invention relates to a cooling system (10) for fuel cell stacks (22, 26), comprising a first cooling module (14) and a second cooling module (18). The first cooling module (14) comprises a fuel cell stack (22, 26), a supply line connection (30, 34) for connecting a supply line (38, 42) for supplying coolant to the fuel cell stack (22, 26), a discharge line connection (46, 50) for connecting a discharge line (54, 58) for discharging coolant from the fuel cell stack (22, 26), and a venting line connection (94, 98) for connecting a venting line (102, 106).

Abstract: The invention relates to a cooling system (10) for fuel cell stacks (22, 26), comprising a first cooling module (14) and a second cooling module (18). The first cooling module (14) comprises a fuel cell stack (22, 26), a supply line connection (30, 34) for connecting a supply line (38, 42) for supplying coolant to the fuel cell stack (22, 26), a discharge line connection (46, 50) for connecting a discharge line (54, 58) for discharging coolant from the fuel cell stack (22, 26), and a venting line connection (94, 98) for connecting a venting line (102, 106).

Abstract: The present invention relates to a fuel cell system (10) for a motor vehicle, and to a motor vehicle which has a fuel cell system (10) of this kind. In this case, the fuel cell system (10) comprises a cooling module (14), an electrical drive module (18), a fuel tank module (22) and at least one fuel cell apparatus (26).

Abstract: The invention relates to a fuel cell system (100, 1) comprising: at least one fuel cell (200) which has a cathode (230) with a cathode chamber and has an anode chamber of an anode (210), which anode chamber is separated from the cathode chamber by a membrane, wherein the cathode chamber is connected to a cathode gas source via at least one first fluid connection (240) and the anode chamber is connected to an anode gas source via at least one second fluid connection; and comprising a first electrical connection (3) to a DC/DC converter (450) that electrically connects the anode (210) and the cathode (230) to an energy system (400), wherein in a shut-down phase of the fuel cell system (100, 1), residual energy present in the fuel cell (200) can be discharged.

Abstract: The invention relates to a fuel cell (2) comprising at least one membrane/electrode unit (10) comprising a first electrode and a second electrode, which electrodes are separated from one another by a membrane, and comprising at least one polar plate (40) which comprises a first distribution region (50) for distributing a fuel to the first electrode and a second distribution region (60) for distributing an oxidation agent to the second electrode. The first electrode and the second electrode of the at least one membrane electrode unit (10) are electrically connected by means of a conductor (90). The invention also relates to a fuel cell stack (5) which comprises a plurality of the claimed fuel cells (2).

Abstract: The invention relates to a cooling system (10) for fuel cell stacks (22, 26), comprising a first cooling module (14) and a second cooling module (18). The first cooling module (14) comprises a fuel cell stack (22, 26), a supply line connection (30, 34) for connecting a supply line (38, 42) for supplying coolant to the fuel cell stack (22, 26), a discharge line connection (46, 50) for connecting a discharge line (54, 58) for discharging coolant from the fuel cell stack (22, 26), and a venting line connection (94, 98) for connecting a venting line (102, 106).

Abstract: The invention relates to a method for operating a fuel cell system (10) using a first operating mode, in which, when all of the fuel cell stacks (22, 26) are inactive, one fuel cell stack (22) is pre-heated using a coolant that is pre-heated by means of an electric heater (42) while bypassing all cooler circuits (58) of the active coolant circuits (14) via bypass lines (64) and the one pre-heated fuel cell stack (22) is activated in order to pre-heat an additional fuel cell stack (26) of the fuel cell system. Other operating modes for operating a fuel cell system are disclosed in additional embodiments.

Abstract: An energy store for a photovoltaic system has: a first capacity range which is provided for feeding into the power grid; a second capacity range which is provided for internal consumption and feeding into the power grid; and a third capacity range which is provided for feeding into the power grid.

Abstract: An energy store for a photovoltaic system has: a first capacity range which is provided for feeding into the power grid; a second capacity range which is provided for internal consumption and feeding into the power grid; and a third capacity range which is provided for feeding into the power grid.

Abstract: An energy store for a photovoltaic system has: a first capacity range which is provided for feeding into the power grid; a second capacity range which is provided for internal consumption and feeding into the power grid; and a third capacity range which is provided for feeding into the power grid.

Abstract: The invention relates to a fuel cell system (100, 1) comprising: at least one fuel cell (200) which has a cathode (230) with a cathode chamber and has an anode chamber of an anode (210), which anode chamber is separated from the cathode chamber by a membrane, wherein the cathode chamber is connected to a cathode gas source via at least one first fluid connection (240) and the anode chamber is connected to an anode gas source via at least one second fluid connection; and comprising a first electrical connection (3) to a DC/DC converter (450) that electrically connects the anode (210) and the cathode (230) to an energy system (400), wherein in a shut-down phase of the fuel cell system (100, 1), residual energy present in the fuel cell (200) can be discharged.

Abstract: A power converter module includes: a DC input terminal configured to receive an input voltage from a DC source; an intermediate circuit coupled directly to the DC input terminal; a DC output terminal configured to provide an output direct voltage; an AC output terminal configured to provide an output alternating voltage; a DC converter coupled between the intermediate circuit and the DC output terminal in order to receive an input voltage from the intermediate circuit; an inverter coupled between the intermediate circuit and the AC output terminal in order to draw an input voltage from the intermediate circuit; and a regulating device coupled to the DC converter and to the inverter, the regulating device being configured to regulate the input voltage of the inverter and of the DC converter to a maximum power drain from the DC source.

Abstract: An energy store for a photovoltaic system has: a first capacity range which is provided for feeding into the power grid; a second capacity range which is provided for internal consumption and feeding into the power grid; and a third capacity range which is provided for feeding into the power grid.

Abstract: A power converter module includes: a DC input terminal configured to receive an input voltage from a DC source; an intermediate circuit coupled directly to the DC input terminal; a DC output terminal configured to provide an output direct voltage; an AC output terminal configured to provide an output alternating voltage; a DC converter coupled between the intermediate circuit and the DC output terminal in order to receive an input voltage from the intermediate circuit; an inverter coupled between the intermediate circuit and the AC output terminal in order to draw an input voltage from the intermediate circuit; and a regulating device coupled to the DC converter and to the inverter, the regulating device being configured to regulate the input voltage of the inverter and of the DC converter to a maximum power drain from the DC source.

Abstract: A photovoltaic module including a plurality of single photovoltaic cells is described. The photovoltaic module includes an electric connection device having power connections for outputting generated photovoltaic energy to a consumer network and an electric cutout device having cutout terminals at the power connections of the electric connection device and at least one safety circuit breaker through which the power connections of the electric connection device may be disconnected electrically from the consumer network. The electric cutout device includes a trigger device which is formed with a thermal sensitivity and/or a smoke sensitivity, which is connected to the safety circuit breaker in such a way that upon detection of a temperature and/or of smoke exceeding a predetermined threshold, the safety circuit breaker electrically disconnects the power connections of the electric connection device from the consumer network. A combination of several such photovoltaic modules is also described.

Abstract: A mounting system for panel-type elements, in particular facade elements, thermoelectric generator elements, thermal solar collectors, photovoltaic modules or solar modules is described, for fastening and securing the element on at least one upper and one lower transverse rail, which are arranged in parallel with and at a spacing from each other for holding an element. The mounting system includes: at least one fastening member fixedly connected to the back side of the element and having at least one anchoring member arranged substantially perpendicularly to the back side for fastening to the upper transverse rail. In the installed position of the element, the fastening member has a smaller distance, relative to a line of slope, from an upper edge of an outer contour of the element than from a lower edge of the outer contour. A panel-type element including a like mounting system, as well as a substructure for holding such an element are also described.