Abstract: A method determines the internal resistance of battery cells of a battery module, wherein for this purpose a cell voltage of a battery cell is determined as a voltage of the respective electrochemical unit of the battery cell, a cell current of a battery cell is determined from a voltage drop on a cell measuring resistor of the battery cell, and the ohmic resistance of a component of the battery cell in the conductive path is used as a cell measuring resistor.

Abstract: A communications module for a household device includes a sensor device that is configured to be attached in the region of a device housing of the household device, a wireless data interface and a processor. The sensor device is configured to scan an emission signal, penetrating outwards through the device housing, of a component of the household device carrying out the operating process of the household device. The processor is configured to determine an operating state of the household device based on measurement values of the sensor device and to provide same by means of the data interface. In addition, the communications module can be used optionally in different types of household devices.

Abstract: A method connects a communication module to a network-based service. The method includes providing first access data for establishing a data connection between the communication module and a network component, and providing second access data for the use of a service that can be accessed via the network component. The first and second access data are transmitted to the communication module and a message from the communication module is transmitted to the service via the network component. The transmission of the access data to the communication module is executed as a tone sequence.

Abstract: A heatable battery includes a battery cell with an anode and a cathode, an anode connection which is connected to the anode and a cathode connection which is connected to the cathode. A heating element is connected to one of the anode and cathode. The battery cell has a controllable switch which is arranged between the heating element and one of the anode and the cathode connection. The controllable switch is arranged in the interior of the battery cell.

Abstract: A heatable battery includes a battery cell with an anode, a cathode, an anode connection which is connected to the anode, and a cathode connection which is connected to the cathode. The battery cell has a heating element and a connection for applying a voltage potential to the heating element. The heating element is connected to one of the components of the anode connection and the cathode connection. The battery cell further has a controllable switch which is arranged between the connection for applying the voltage potential to the heating element and the other of the components of the anode connection and the cathode connection.

Abstract: A method and a device operate an energy storage cell having a cathode, an anode, an electrolyte, a first reference electrode which has a first capacity for storing an electric charge, and a second reference electrode which has a second capacity for storing an electric charge, the second capacity being larger than the first capacity. The method detects at least one electrode voltage between the one cathode or anode and the second reference electrode; determines the charge state of the energy storage cell using the at least one electrode voltage; detects a reference voltage between the second reference electrode and the first reference electrode; connects a current source to the first reference electrode and the second reference electrode such that the charge state of the first reference electrode and the second reference electrode changes; and separates the current source from the first reference electrode and the second reference electrode.

Abstract: The invention relates to a fuel cell stack having bipolar plates (10), each of which has two separator plates (12, 14) with an active region (16) and two distribution regions (18, 20) with main gas ports (22, 24) as well as a coolant main port (26), wherein the separator plates (12, 14) are formed and arranged one over the other in such a way that the respective bipolar plate (10) has separate channels (28, 30, 32) for the reaction gases and the coolant that connect the main gas port (22, 24) for the reaction gases and the coolant main port (26) of the two distribution region (18, 20) to each other. It is provided that the channels (28) for a reaction gas have an impermeable first dividing plate (38) in an inlet area (40) of the active area (16) that separates the channels (28) into two volume areas (58, 60), and in that a second main gas port (23) is provided adjacent to the first main gas port (22) in a distribution region (18) in order to supply the reaction gas.

Abstract: The present invention relates to the field of rotogravure printing, and more specifically to a rotogravure printing medium, a coating composition for rotogravure printing media, a method for producing such a rotogravure printing medium and an use of the rotogravure printing medium in a printing application, preferably in rotogravure printing using electrostatic assist (ESA).

Abstract: A rechargeable battery cell includes a cathode, an anode, an electrolyte, and a sensor that is arranged in the rechargeable battery cell. The sensor has at least two sensor electrodes and is accommodated in the rechargeable battery cell without a sheathing at least in sections. Moreover, the at least two sensor electrodes are operated in an electrical potential range that protects the sensor and/or the sensor electrodes against corrosion by the electrolyte. A method for producing and operating a rechargeable battery cell of this kind is also provided.

Abstract: A system for providing a virtual environment on an at least one computing device. The system includes, a server arrangement to generate at least one first image associated with the virtual environment on at least one first virtual pattern, render visual orientations associated with the at least one first image on a render target, and generate at least one second image; and at least one computing device, communicably coupled with the server arrangement, to receive the at least one second image from the server arrangement, render each of the render targets of the at least one second image on an at least one second virtual pattern, determine the movement of head of the at least one user, and provide the virtual environment on a display arrangement based on a movement of head of the at least one user.

Abstract: The invention relates to a fuel cell stack having at least two segments of individual fuel cells arranged in parallel in terms of fluid, said segments being arranged in series relative to one another in terms of fluid. It is provided that the fuel cell stack is set up to vary the number of individual fuel cells in at least one segment.

Abstract: There is provided a system for providing virtual reality content. The system includes a computing arrangement that is operable to execute image generating instructions to process the virtual reality content to generate image data, and a display arrangement that is operable to render the generated image data. The computing arrangement, when executing the image generating instructions, is operable to intercept drawing calls to one or more graphics libraries from application software that executes in operation in computing hardware of a user-wearable device of the system, or to intercept drawing calls from the one or more graphics libraries to a graphics driver of the display arrangement, wherein the user-wearable device includes the display arrangement; and to modulate camera and projection matrices of the drawing calls to create two images having a substantially hemi-spherical field of view for presentation to corresponding eyes of the user.

Abstract: A mounting device, in particular to the mounting of an internal combustion engine on a chassis of a motor vehicle, which is provided with a fluid working chamber that is fluidically connected via at least one fluid channel to a fluid equalization chamber via at least one fluid channel in a housing. At the same time, a fluid damping chamber is provided, which is separated by an elastic membrane from the fluid working chamber and which is connected with fluidic connection via a throttling channel to an outer environment of the mounting device. The throttling channel is formed by a replaceable throttling element separately from the housing.

Abstract: A positioning aid for surgical procedures has a carrier system and a template. The carrier system consists of a carrier plate, which is provided with a recess, and supports. The carrier plate can be secured to a cranial bone via the supports over an operating field for the surgical procedure. The template has a template plate which can be connected to the carrier plate in a play-free manner and which comprises a guiding aperture. The guiding aperture is arranged and oriented in the template plate, which consists of a blank, in an individualized manner according to coordinates ascertained in advance. The central longitudinal axis of the guiding aperture matches a trajectory for accessing the operating field for the surgical procedure when the carrier system and the template are assembled and the carrier system is secured to the cranial bone.

Abstract: The present disclosure provides a method and to a device for quantitatively sensing the power fraction of a radiation background of a pulsed laser. The disclosure further relates to the use of a saturable element. The method includes modulating a measurement beam, which is emitted by the laser, by means of a saturable element in accordance with the fluence of the measurement beam, detecting, by means of a modulation beam power detector, the power of the measurement beam modulated by the saturable element, and determining the power fraction of the radiation background of the pulsed laser on the basis of the detected power of the measurement beam modulated by means of the saturable element.

Abstract: A polarimeter includes an integrated device with an array of antennas including multiple column pairs. Each column pair has two columns, and each column in each column pair includes multiple antennas. A first column of each column pair in the array scatters a first polarization component of an incident radiation, and a second column of each column pair in the array scatters a second polarization component of the incident radiation. The scattered fields of the column pairs interfere constructively in a direction depending on the polarization of the incident radiation, resulting in maximal intensity at a certain point in space for a specific polarization state. Multiple column pairs in parallel and oriented at angles with respect to each other can be used to scatter different polarization components of the incident radiation directionally to different points in space. Detectors are positioned with respect to the integrated device to detect polarization components.

Abstract: A storage battery arrangement includes a plurality of storage battery cells connected in series, a central network node designed to transmit data using the storage battery cells and connected to the series connection of storage battery cells, a plurality of cell network nodes designed to transmit data using the storage battery cells, where each cell network node is connected in parallel to a storage battery cell. The storage battery arrangement also includes a control device designed to command at least one first cell network node to apply a test signal having at least one predetermined frequency to a first storage battery cell to which said first cell network node is connected, and to command a second cell network node connected to a second storage battery cell to determine, based on a signal response of the second storage battery cell to the test signal, at least one condition of the second storage battery cell.

Abstract: The present invention relates to an optical module configured to be optically coupleable to a laser amplifier module, the optical module comprising an inner optical element having a plurality of M inner reflective elements arranged around a center of the inner optical element; and a plurality of N outer reflective elements arranged around the inner optical element, the plurality of N outer reflective elements being configured to face the inner optical element, wherein the plurality of M inner reflective elements and the plurality of N outer reflective elements are configured to provide an optical path for a laser beam.

Abstract: A lithium-ion cell includes two working electrodes which are located opposite one another and have different polarities and between which a separator which electrically insulates the working electrodes with respect to one another and is permeable to lithium ions is arranged in an electrolyte space. A lithium-containing reservoir electrode is in contact with the electrolyte space in such a way that electronic isolation is provided and lithium ions are exchanged, wherein by way of a measuring and control circuit which connects the reservoir electrode to at least one of the working electrodes a voltage can be measured between the reservoir electrode and the working electrode and a voltage can be applied between the reservoir electrode and the working electrode. The reservoir electrode is of porous design and is arranged between two insulation layers of the separator which provide electronic isolation and are permeable to lithium ions.

Abstract: A lithium ion cell has two opposite electrodes that are oppositely polarized and are separated from each other by a porous separator which is permeable to lithium ions and which is designed as an at least triple-layered composite element. One of the layers of the separator is an electrically conductive, porous sensor layer, on both sides of which electronically insulating layers permeable to lithium ions are disposed and which is connected to at least one of the electrodes via a resistance measuring device.