Abstract: Test system (10) for simultaneous testing of several batteries, in particular high-voltage batteries, comprising: a DC voltage intermediate circuit (22), several basic converters (1a-1h) connected to the DC voltage intermediate circuit (22), each of which is switchably connected to a test channel (4a-4h) via a connection line (24a-24h), a boost converter (2a, 2b) connected to the DC voltage intermediate circuit (22) which, during operation of the test system (10), is switchable to different connection lines (24a-24h) to at least one of the test channels (4a-4h) via a boost line (26a, 26b) and one connection node (18a-18h), a control unit (27) for controlling the basic converters (1a-1h) and the boost converter (2a, 2b) according to a desired power transfer; wherein each connection line (24a-24h) comprises a safety-related switch (6a-6h) between test channel (4a-4h) and connection node (18a-18h).

Abstract: Test benches are known on which vehicles have to be brought in on lifting platforms or independently and prepared for connection to the load apparatus. In order to shorten the existing setting-up time and dismantling time on the test bench, the use of a vehicle support (10) for a chassis test bench (80) with two longitudinal supports (12, 14), a connecting apparatus via which the two longitudinal supports (12, 14) are connected to each other, supporting plates (56), of which first supporting plates (56) are arranged on the first longitudinal support (12) and second supporting plates (56) are arranged on the second longitudinal support (14), and adapter devices (62) which are arranged on the supporting plates (56) and serve to provide a connection between a wheel hub (64) of a vehicle (60) and a load apparatus (66) is suggested, wherein at least two wheels (78) are mounted on each longitudinal support (12, 14) by means of which the vehicle support (10) can be moved.

Abstract: The invention relates to a test bed and a method for testing a real test object in driving operation, wherein the test object has at least one real component of a vehicle which is capable of applying torque to a wheel hub. The test bed comprises a load machine configured to be connected to the wheel hub so as to transmit torque, an actuator configured to generate a relative movement between the wheel hub on the one hand and a vehicle frame supporting the wheel hub on the other, simulation means for simulating the driving operation, wherein the simulation means is configured to simulate a virtual wheel and dynamics of the virtual wheel as if it were arranged on the wheel hub, and control means configured to operate the real test object in consideration of the simulated dynamics of the virtual wheel on the test bed.

Abstract: The present invention relates to a controlling method for monitoring an output power (OP) of a battery device (110) and an operating poweroperating power (OPP) of a fuel cell system (120) for an electric drive device (130) of a hybrid drive system (100), characterised by the following steps: measuring and storing the operating poweroperating power (OPP) of the fuel cell system (120) over a measurement period (MP), measuring and storing the output power (OP) of the battery device (110) over a measurement period (MP), determining a battery damage forecast (BDF) at least on the basis of the measured and stored output power (OP) of the battery device (110), determining a fuel cell damage forecast (FCDF) at least on the basis of the measured and stored operating poweroperating power (OPP) of the fuel cell system (120); specifying a target output power (TOP) for the battery device (110) on the basis of the determined battery damage forecast (BDF), specifying a target operating power (TOPP) for the fuel cell syst

Abstract: A battery cell test unit includes two pressure plates, a battery cell which is clamped between the two pressure plates, a test unit housing, an electrical connection device which electrically contacts the battery cell in the test unit housing, and conditioning plates which are arranged in the test unit housing and to abut in a planar contact from opposite sides against two outward-facing surfaces of the two pressure plates during a test. The battery cell and the two pressure plates together form a test device.

Abstract: Measuring arrangement for determining the bridge currents of a switched electrical converter unit (2), in which, in a modulation process, at least two electronic half bridges (3, 3?) are switched with temporally offset actuation signals by a control unit (4), comprising a measuring unit (1) that is connected to current sensors (6, 6?), wherein the current sensors (6, 6?) are arranged in the output or input lines of the half bridges (3, 3?) in order to measure the bridge currents, and the measuring unit (1) is connected to the control unit (4) for temporal synchronisation, wherein the measuring unit (1) is designed to define measurement times (8, 8?) of the current sensors (6, 6?) which are temporally synchronised with the actuation signals of the half bridges (3, 3?), as well as an inverter arrangement having such a measuring arrangement.

Abstract: The invention relates to a valve-actuating device for actuating a valve of a reciprocating piston engine, comprising a first and second rocker arm rotatably mounted about a common rotational axis; a pushrod connected to the first rocker arm so as to transmit an actuating movement of the first rocker arm to a valve; a first and second cam arranged on a shaft, where the first rocker arm marks a contour of the first cam and the second rocker arm marks a contour of the second cam, where the rocker arms are connected together via a mechanical coupling apparatus having a locking element able to be brought into at least a first position and a second position and configured to transmit an actuating movement of the second rocker arm to the first rocker arm at least in the first position of the locking element; and a switching device having a slotted guide element which is designed to bring the locking element of the coupling apparatus at least from the first position to the second position and vice-versa.

Abstract: Various embodiments of the present disclosure are directed to measuring methods for determining a flow rate of a process gas, contained in a gas pressure vessel charged with overpressure, escaping from the gas pressure vessel. In one example embodiment, the method includes: exerting a vessel weight force from the gas pressure vessel together with the contained process gas; compensating for the vessel weight force by means of a counterweight force exerted by a counterweight, or the counterweight force by means of the vessel weight force exerted by the counterweight, at least partially to a resultant measured weight force; determining the measured weight force at at least two points in time; and determining the flow rate of the process gas using the measured weight force determined at the at least two points in time.

Abstract: The invention relates to a converter assembly comprising at least two converters (7, 7?) and a control unit (1) connected to the converters (7, 7?), wherein the control unit (1) is designed, continuously or at discrete time intervals, to transmit to the converters (7, 7?) their permissible electrical power range, in particular their minimum power value Pmin and/or their maximum power value Pmax, to determine the current power balance of the individual converters (7, 7?) or to receive it from same, and to adjust the permissible electrical power range of the converters (7, 7?) in such a way that the power balance of the entire converter assembly does not leave a predefined range. The invention also relates to a method for operating a converter assembly of this type.

Abstract: The invention relates to a method and a system for preparing data on dynamic spatial scenarios, to a computer-supported method, to a system for training artificial neural networks, to a computer-supported method, and to a system for analyzing sensor data. A display of a time curve of an angular sector covered by another object from the perspective of an ego object is generated. The time curve is ascertained from sensor data, and the sensor data characterizes a dynamic spatial scenario with respect to the ego object and at least one other object.

Abstract: The present invention relates to a method for heating a fuel cell system (1a; 1b; 1c; 1d) comprising at least one fuel cell stack (2) with an anode portion (3) and a cathode portion (4), and a reformer (5) upstream of the anode portion (3) for steam reforming using a fuel, the reformer (5) comprising a nickel-based catalyst, said method having the following steps: starting a heating process for heating the fuel cell system (1a; 1b; 1c; 1d) with a heating device (6) and conducting a carbon-containing fluid and conducting steam through the nickel-based catalyst of the reformer (5) during the heating process. The invention also relates to a fuel cell system (1a; 1b; 1c; 1d) which is designed to carry out a method according to the invention.

Abstract: Fuel cell system (1), in particular an SOFC system, comprising at least one fuel cell stack (2) with an anode section (3) and a cathode section (4), an air supply section (5), a fuel supply section (6) with a reformer, in particular a reformer heat exchanger (7) and an exhaust section (8) with an oxidation catalyst (9), characterised in that a CPOX reformer (10) is provided for the production of shielding gas by catalytic partial oxidation. The invention further relates to the use of such a fuel cell system (1).

Abstract: The present invention relates to a fuel cell system (1a; 1b; 1c; 1d) comprising: at least one fuel cell stack (2) with an anode portion (3) and a cathode portion (4); a reformer-heat exchanger (5) with a cold side which is upstream of the anode portion (3) and forms a reformer (6) and a hot side which is downstream of the cathode portion (4) and forms a heat exchanger (7); and an afterburner (8) downstream of the heat exchanger (7) for combusting anode exhaust gas from the anode portion (3) and/or cathode exhaust gas from the cathode portion (4), the heat exchanger (7) being situated directly downstream of the cathode portion (4) and being in fluid communication with the cathode portion (4) by means of a cathode exhaust gas line (9) in order for the cathode exhaust gas to be fully conducted through the heat exchanger (7). The invention also relates to a method for controlling the temperature of a fuel cell system (1a; 1b; 1ce; 1d) according to the invention.

Abstract: The present invention relates to a mixing device (10) for mixing at least anode exhaust gas (AEG) with cathode exhaust gas (CEG) from a fuel cell stack (110) of a fuel cell system (100), having a cathode exhaust gas line (30) with a cathode exhaust gas connection (32) for fluid-communicating connection with a cathode exhaust gas section (134) of a cathode section (130) of the fuel cell stack (110) and an anode exhaust gas line (20) with an anode exhaust gas connection (22) for fluid-communicating connection with an anode exhaust gas section (124) of an anode section (120) of the fuel cell stack (110), characterised in that the anode exhaust gas line (20) is arranged within the cathode exhaust gas line (30) and has a closed anode exhaust gas line end (24) and at least two anode exhaust gas outlets (21) into the cathode exhaust gas line (30) with outlet directions (OD) radial to the anode exhaust gas line axis (AEL) and to the cathode exhaust gas line axis (CEL), wherein, further downstream of the anode exhaust

Abstract: The present invention relates to a multichannel test system (100) and to a method for supplying test load devices (61, 62) with electrical power from a supply grid, comprising at least a first test channel (10) and a second test channel (20) which are galvanically separated. At least one switching device (40) is provided for galvanically coupling intermediate circuits (13, 23) of the test channels (10, 20) in a switchable manner to form a common intermediate circuit. For this purpose, in addition to phase-controlled, variably adjustable rectification, uncontrolled, invariable rectification is also provided in a passive operating mode by an active power stage (12, 22) in power converter circuits (16, 26, 36) of the test channels (10, 20, 30).

Abstract: A valve-actuating device for a valve of a reciprocating piston engine having a coupling apparatus with a locking element able to be brought into a first and second position by a mechanical switching device, the switching device comprising a guide rod and a parallel actuating rod capable of relative movement; a slotted guide element movably mounted on the guide rod for moving the locking element; a triggering element coupled to the slotted guide element; where the slotted guide element and triggering element are clamped between two stops on the actuating rod, each with an associated spring element, where the slotted guide element and the triggering element are displaceable along and/or parallel to the guide rod with the actuating rod; and a blocking element interacting with the triggering element which in a first state, blocks a displacement of the triggering element and the slotted guide element upon the axial displacing of the actuating rod such that the spring elements are preloaded, where in a second state

Abstract: The present invention relates to a method for operating a driver model for controlling a vehicle. The driver model comprises a vehicle module (203) which determines an accelerator pedal position to be set on the vehicle. In addition, the vehicle module (203) determines a required power as a component of a total power, which total power can be generated by a drive system of the vehicle, wherein the required power corresponds to a power that is necessary for moving the vehicle at a required speed and/or a required acceleration (311) along a predefined road course. The method according to the invention further provides for a value (313) of a permissible pedal position to be assigned to the required power and for the value (313) of the permissible pedal position to be transmitted to the driver model in order to control the vehicle.

Abstract: The present invention relates to a method for operating a driver model for controlling a vehicle. According to the invention, a vehicle status of the vehicle is selected and activated by the driver model from a number of vehicle statuses (301, 303, 305, 307, 309) by comparing a current status of the vehicle with at least one selection condition specified for a particular vehicle status, the number of vehicle statuses (301, 303, 305, 307, 309) comprising at least a first vehicle status (301, 303, 305, 307, 309) and a second vehicle status (301, 303, 305, 307, 309).

Abstract: The invention relates to a method and a drivetrain test bench for detecting an imbalance and/or a misalignment of at least one shaft assembly of a drivetrain during operation on a test bench, wherein a first piezoelectric force sensor is arranged in a flow of force generated by a transmission of power between a load unit of the test bench and a drive unit of the drivetrain or the test bench, and which is transmitted by of the shaft assembly, wherein the first force sensor realizes a first force measurement in a first plane and/or perpendicular to the first plane as is intersected by a rotational axis of the shaft assembly and preferably at least substantially perpendicular to the rotational axis, and wherein the first force measurement and/or a rotational angle determination for the shaft assembly are used to detect an imbalance, and/or a misalignment of the shaft assembly.

Abstract: The invention relates to a fuel cell system (1), in particular an SOFC system, comprising at least one fuel cell stack (2) with an anode section (3) and a cathode section (4), an air supply section (5), a fuel supply section (6) and a recirculation section (7), wherein a heat exchanger network with at least one first heat exchanger (8) and a second heat exchanger (9) is provided, wherein the second heat exchanger (9) is arranged downstream of the first heat exchanger (8), wherein a cold side of the first heat exchanger (8) is arranged in the fuel supply section (6) and a cold side of the second heat exchanger (9) is arranged in the air supply section (7). The invention further relates to the use of such a fuel cell system (1).