Abstract: In an example, an optimized inverter switching arrangement to operate a system with an electric drive may include an inverter circuit as a two-level inverter, which couples an alternating signal connection and a direct signal connection of the switching arrangement to each other. The inverter circuit may include at least two phases, which are each equipped with first switching elements as a half bridge. At least one second switching element is associated with each of the phases to form a hybrid circuit. The first and second switching elements differ in their semiconductor technology. By a control circuit, the inverter circuit may be operated in a short circuit operation to perform an active short circuit in case of a fault. The control circuit may control the first and second switching elements such that the alternating signal connection is short-circuited by each phase.

Abstract: The invention relates to a radar antenna arrangement (1) for a vehicle (2), comprising at least one vehicle component (3), wherein the radar antenna arrangement (1) comprises a plurality of radar devices (4) which are configured to transmit and/or receive a radar beam (12). The radar devices (4) are arranged on a component surface (5) of the vehicle component (3). The invention provides for the radar antenna arrangement (1) to comprise at least one antenna row (6) for determining an azimuthal angle (10) of the radar beam (12), said antenna row comprising a plurality of the radar devices (4). Directly adjacent radar devices (4) have respective horizontal distances (8) from one another. The radar antenna arrangement (1) comprises at least one antenna column (7) for determining an elevation angle (11) of the radar beam (12), said antenna column comprising a plurality of the radar devices (4). Directly adjacent radar devices (4) have respective vertical distances (9) from one another.

Abstract: The disclosure relates to a method for evaluating an electric connection of an electric energy storage device to an onboard electrical system of a vehicle. A voltage converter which is connected to the energy storage device is used to supply at least one component of the onboard electrical system with an output voltage of the voltage converter. The method comprises changing the specified voltage of the voltage converter in a specified time interval, whereby the battery voltage and the battery current of the energy storage device can be influenced, detecting the battery voltage of the energy storage device within the time interval, detecting the battery current of the energy storage device within the time interval, comparing the time curve of the battery voltage and the time curve of the battery current, and evaluating the electric connection on the basis of the compared time curves.

Abstract: The invention relates to a cable guide (1) for a cable connection between a vehicle body (52) and a sliding door (54) comprising a first connection device (4), a second connection device (2) and an energy chain (3) running between the first connection device (4) and the second connection device (2), which has a stretched configuration when the sliding door (54) is closed and a deflected configuration when the sliding door (54) is open, wherein the energy chain (3) has a first end link (42) at one end and a second end link (42) at the opposite end (22), wherein the first end link (42) is pivoted on the first connection device (4) and the second connection device (2) comprises a tensioning device (24) for the energy chain (3).

Abstract: A layered structure for a fuel cell comprises a carbon-based catalyst-free gas diffusion layer substrate and a carbon-based microporous layer, which is joined to the gas diffusion layer substrate and comprises a plurality of carbon carriers or carbon fibers embedded into an ion-conducting polymer binder mixture. The polymer binder mixture comprises a sulfur-free binding polymer and a sulfonated polymer, and a fraction of the binding polymer at or near a surface of the microporous layer facing away from the gas diffusion layer substrate is less than or equal to a fraction of the sulfonated polymer. A method for producing a layered structure of this type is also provided.

Abstract: A method, by a control device, to activate an active discharge circuit to discharge a capacitive energy storage of at least one electrical consumer of an on-board power supply for a motor vehicle. An energy source for the on-board power supply can be coupled to the on-board power supply and be disconnected from the on-board power supply by a switching device. The control device receives a signal (S) for activating the active discharge circuit, examines, after receiving the signal (S), if the energy source is disconnected from the on-board power supply according to at least one first criterion, and activates the active discharge circuit only upon satisfaction of a condition that the energy source has been disconnected from the on-board power supply according to the at least one first criterion.

Abstract: The described examples may relate to a connection device for electrically conductively connecting a stator and a pulse inverter of an electric motor. The connection device includes at least one clamping piece pair with two clamping pieces, which are movable in relation to each other along a clamping direction between a closed and an open position and formed to clamp a stator-side line end with a pulse inverter-side line end between the two clamping pieces in the closed position such that an electrically conductive connection of the line ends is established.

Abstract: The described examples may relate to a method of operating an on-board power supply of an electrically drivable motor vehicle, in which at least one electrical machine is supplied with electrical energy from a vehicle battery connected to the on-board power supply via an inverter connected to the on-board power supply in an intended drive operation, and the inverter may include a radio interference suppression filter to reduce grid-bound interferences. In an example, at least the inverter may be electrically disconnected from the on-board power supply in a charging operation.

Abstract: A method for the production of an electrode for a fuel cell is provided that comprises providing a multitude of catalyst particles carried on at least one electrically conductive particle carrier, and depositing one or more atomic or molecular layers of an ionomer from the gas phase on the catalyst particles and/or the at least one particle carrier, thereby forming a proton-conducting ionomer coating. Furthermore, an electrode for a fuel cell is also provided.

Abstract: A measurement system for an electrical machine includes a position sensor device arranged on a rotor of the electrical machine, a carrier connected to the position sensor device, and a temperature sensor device fastened to the carrier. The position sensor device is configured to ascertain an item of information about an orientation of the rotor. The temperature sensor is configured to ascertain a temperature of a stator of the electrical machine.

Abstract: A shaft-hub connection includes a shaft and a hub which engage with one another for conjoint rotation about an axis of rotation via a first toothing and a second toothing. The first toothing has a first toothing region and a second toothing region, wherein the first toothing region and the second toothing region are, as viewed in the circumferential direction (u), arranged offset by a dimension (d) in such a way that the first toothing region engages with the second toothing via front tooth flanks as viewed in the circumferential direction (u), and the second toothing region engages with the second toothing via rear tooth flanks as viewed in the circumferential direction (u).

Abstract: A pressurized gas accumulator has a hollow body which extends along a longitudinal axis and at least one connection piece. The hollow body has at least one layer of a weave structure with a plurality of warp threads running next to one another and a weft thread woven with the warp threads and oriented perpendicular thereto. The warp threads are oriented essentially parallel or essentially perpendicular to the longitudinal axis of the hollow body. A method for producing a pressurised gas accumulator and to a device for carrying out said method is also provided.

Abstract: The present invention provides a method for manufacturing a battery cell component including providing a current collector foil and placing separators onto the current collector foil at spaced intervals. A battery cell component, battery and electric or hybrid vehicle is also provided.

Abstract: A method for acquiring information in the spatial environment of a vehicle, comprising: providing at least two radar sensors arranged at different positions at the vehicle; transmitting radar signals by the radar sensors, the radar signals being assigned to the radar sensors; receiving reflected components of the radar signals assigned to the radar sensors at the respective radar sensors and further processing these reflected components of the radar signals as reception information; assigning time information to the reception information obtained from the respective radar sensors, the time information forming a time reference for the reception information; assigning location information to the reception information obtained from the respective radar sensors, the location information forming a location reference for the reception information; and processing the reception information obtained from the at least two radar sensors into common environment information by taking into account the time information and

Abstract: A fuel-cell stack has a first end plate and a second end plate and a plurality of fuel cells arranged between the end plates. At least one elastic tensioning element is tensioned in the stack direction between the end plates. Furthermore, a re-tensioning element is arranged between the tensioning element and a surface section of the fuel-cell stack. The re-tensioning element has a tensioning body and at least one adjusting element arranged between the tensioning body and the surface section. A distance between the tensioning body and the surface section can be variably adjusted and fixed by the at least one adjusting element.

Abstract: A battery module includes a plurality of battery cells connected in series, each battery cell having a cathode, an anode, and a separator separating the cathode and the anode, and a bipolar current collector; a plurality of polymer frames, each having a window to receive part of the one of the plurality of battery cells; two of the plurality of polymer frames defining a compartment; and electrolyte filling the compartment for one of the plurality of battery cells. A method is also provided.

Abstract: The present invention relates to a method for determining the compressive tensile force acting on a fuel cell stack due to at least one tensioning element. Thereby, the compressive tensile force is the overall tensile force compressing the fuel cell stack. This is determined according to the invention by means of acoustic measurements on vibratable sections of the tensioning elements. The subject matter of the invention also includes a data processing program for carrying out the method according to the invention along with the use of a smartphone for carrying out the method according to the invention.

Abstract: A flow-field plate is provided for distributing a reactant to an electrode or a gas diffusion layer of a fuel cell, the flow-field plate having a gas inlet, and having a plurality of channels defining a flow field. A pressure gradient is present between the gas inlet and the flow field given a state of throughflow, which leads to an intake of exhaust gas flowing in the channels in the direction of the gas inlet. Furthermore, there is a water/gas separator which is fluidically connected to the gas inlet for separating liquid water and/or water vapor from a gas which is connected to the flow field in order to supply the gas separated in the water/gas separator to the flow field. A flow cross-section at the gas inlet or at the gas inlet region is smaller than the flow cross-section at or in the region of the water/gas separator.

Abstract: A fuel cell stack includes a plurality of fuel cells received between two end plates, at least one end plate of which has flow channels formed therein with ports for the anode fresh gas and the anode exhaust gas as well as ports for the cathode fresh gas and the cathode exhaust gas, wherein a hygroscopic material forms the wall between the ports for the anode exhaust gas and the cathode fresh gas.

Abstract: A fuel cell system comprises a clamping system for a fuel cell stack, the clamping system including a plurality of disc springs. The disc springs are connected together in a bonded and/or force-fitting manner on a plane perpendicular to an axis of rotational symmetry running through the center of the circle described by the disc.