Abstract: An electric energy supply system having at least one cell element, which contains at least one galvanic cell, and having a measuring circuit, which is configured to ascertain at least one parameter of the at least one cell element by electrochemical impedance spectroscopy (EIS). The disclosure provides that the energy supply system comprises an electrochemical gas sensor and the gas sensor is connected to the measuring circuit via a toggle switch, wherein the measuring circuit is configured to apply an electric variable as the excitation variable in the gas sensor and to detect another electric variable as the measured variable at the gas sensor and to ascertain a gas concentration in the surroundings of the gas sensor.

Abstract: A measurement arrangement for determining a complex impedance of a first electrical component, wherein the measurement arrangement comprises the first component and a measuring unit, which is coupled to the first component and adapted to determine the complex impedance of the first component. The measurement arrangement comprises at least one second electrical component, which is arranged with the first component in a parallel circuit, which is hooked up in parallel with the measuring unit, wherein the parallel circuit comprises at least one switching device by which an electrical connection between the first and second component can be broken, and wherein the measurement arrangement is designed to temporarily break the electrical connection between the first component and the second component by the associated switching device in order to determine the first complex impedance of the first component.

Abstract: A battery device with a battery module that includes multiple secondary cells, and the battery module is provided with a positive pole and a negative pole. Moreover, the battery module is placed inside an insulating housing with a contact element, which is connected to the positive pole and to the negative pole and through which the positive pole and the negative pole may be connected to an electronics unit of a battery system. Moreover, the invention relates to a battery system and a method for assembling a battery system.

Abstract: A battery system, including multiple battery cells, each of which have respective battery cell housings with electrical terminals via which the multiple battery cells are electrically connected to one another, wherein a cell branch connecting the electrical terminals to a galvanic cell and a bypass branch for bridging the galvanic cell are arranged in each of the respective battery cell housings, each cell branch having a switching element for opening and closing the cell branch and each bypass branch having a bridging switching element for opening and closing the bypass branch.

Abstract: The disclosure relates to an electrical energy-supply device including several usage units, wherein each usage unit is adapted to generate or temporarily store electrical energy, and wherein a control means is adapted to control an exchange of power (E) between the energy-supply device and at least one device, The invention provides that the usage units of the energy-supply device are divided into strands and the usage units of each strand are connected to a series connection and the series connection is connected via a DC converter and at least one galvanically isolable switching unit is connected to a busbar arrangement.

Abstract: A battery for a motor vehicle, having multiple battery cells which include respective battery cell housings with electric terminals via which the battery cells are electrically connected to one another. In the battery cell housings, in each case a cell branch connecting the terminals, with a galvanic cell, is arranged, and in each case several of the battery cells are connected to one another in parallel connection to form respective cell blocks. Each cell branch includes a switching element for opening and closing the cell branch; the battery has a control device which is configured in order to actuate the switching elements of the cell branches for opening or closing the switching elements as a function of a performance requirement of an electric drive of the motor vehicle.

Abstract: A protective device for shutting down at least one battery cell in a battery system of a motor vehicle in case of an electrical short circuit. The protective device is configured to conduct an electric current, which flows through the at least one battery cell, through a measurement element, in which the current generates an electrical measurement voltage in dependence on its amperage and/or its amperage gradient. The measurement element is coupled to an analog monitoring circuit, in which a comparison unit is configured to trigger a triggering signal for the case that the amperage rises at least by a predetermined delta value within a predetermined duration, and a switching unit is configured to receive the triggering signal and to interrupt the current upon receiving the triggering signal by switching at least one switching element.

Abstract: A method for discharging a battery module, having at least two battery cells, of a battery having at least two battery modules, wherein the battery cells of each of the battery modules are arranged next to one another and are mechanically and electrically connected to one another, wherein, in each of the battery modules, the respective battery cells are individually activated and deactivated in terms of an energy storage function by a cell switch unit, wherein the battery cells of the battery module to be discharged are selectively electrically coupled successively to a discharge device by the cell switch unit and starting from one predefined battery cell, in order to individually successively electrically discharge the battery cells in order to discharge the battery module.

Abstract: A protective device for switching off a battery cell of a motor vehicle battery in the event of an electrical short-circuit. The battery cell has two cell terminals and an energy storage unit for storing energy. The energy storage unit is connected to the cell terminals in an electrically conductive manner in order to provide cell voltage to the cell terminals. The protective device detects the short-circuit as a function of at least the cell voltage affecting the battery cell. In this case, the battery cell has the protective device and at least one switching device, which is arranged between the energy storage unit and at least one of the cell terminals. The protective device isolates the energy storage unit from the at least one of the cell terminals in order to switch off the battery cell by the switching device.

Abstract: A method for operating an electric energy supply device with a plurality of usage units. Each usage unit is designed to generate or buffer electric energy. A control device is designed to control an exchange of energy between the energy supply device on the one hand and at least one device that is connected to the energy supply device on the other hand. For each usage unit it sets a respective setpoint value for at least one electric operating parameter.

Abstract: The disclosure relates to an electrical energy-supply device including several usage units, wherein each usage unit is adapted to generate or temporarily store electrical energy, and wherein a control means is adapted to control an exchange of power (E) between the energy-supply device and at least one device, The invention provides that the usage units of the energy-supply device are divided into strands and the usage units of each strand are connected to a series connection and the series connection is connected via a DC converter and at least one galvanically isolable switching unit is connected to a busbar arrangement.

Abstract: A battery for a motor vehicle, having multiple prismatic battery cells, which are arranged in a battery housing of the battery and each have two connections for electrically contacting the battery cell and a cell housing having an outflow opening, which is fluidically connected to an interior of the cell housing via a pressure relief valve and through which gas can be discharged from the interior. Each of the battery cells is overlapped by a separate formed plate part, which is arranged spaced apart from the respective outflow opening and, with the respective cell housing, encloses a flow space into which the outflow opening opens.

Abstract: A dynamically disconnectable battery system for a motor vehicle, including a plurality of battery cells, having a respective battery cell housing with electrical connections by which the battery cells are electrically interconnected. In the battery cell housings there is arranged a respective cell branch connecting the connections to a galvanic cell. Each cell branch includes a switching element for opening and closing the cell branch; the battery system includes a control device, which is configured to actuate all the switching elements of the cell branches for the opening of the switching elements when the control device has received a danger signal from at least one sensor.

Abstract: A battery and a method for operating a battery, in particular for a motor vehicle, including multiple battery cells, which have respective battery cell housings with electric terminals via which the battery cells are electrically interconnected, wherein a respective cell branch connecting the terminals and having a galvanic cell is arranged in the battery cell housings, a respective bypass branch for bypassing the respective galvanic cell is arranged in the battery cell housings; each cell branch has a first switching element for opening and closing the cell branch, and each bypass branch has a second switching element for opening and closing the bypass branch.

Abstract: A battery cell having first cell connectors, a galvanic cell and a first switching unit electrically coupled to the first cell connectors and the galvanic cell for electrically coupling the galvanic cell to the first cell connectors depending on a switching state of the first switching unit. The battery cell has second cell connectors electrically separated from the first cell connectors and a second switching unit electrically coupled to the second cell connectors and the galvanic cell for electrically coupling the galvanic cell to the second cell connectors depending on a switching state of the second switching unit.

Abstract: A cell having a galvanic cell, a first semiconductor switching element, a first cell connection, which is directly electrically coupled to a first potential connection of the galvanic cell, and a second cell connection, which is electrically coupled via the first semiconductor switching element to a second potential connection of the galvanic cell. The battery cell includes a third cell connection electrically coupled to the second potential connection of the galvanic cell, a second semiconductor switching element, and a fourth cell connection, which is electrically coupled via the second semiconductor switching element to the first potential connection of the galvanic cell.

Abstract: A battery cell with a galvanic cell, a first semiconductor switching element, a first cell connector electrically coupled directly to a first potential connector of the galvanic cell, and a second cell connector electrically coupled to a second potential connector of the galvanic cell via the first semiconductor switching element. The battery cell further has a third cell connector electrically coupled to the second potential connector of the galvanic cell, a second semiconductor switching element, and a fourth cell connector electrically coupled to the first potential connector of the galvanic cell via the second semiconductor switching element. A third semiconductor switching element is connected between the third cell connector and the fourth cell connector which primarily serves to switch individual battery cells out of the system regardless of the (activation or deactivation) state of the predecessor as well as successor cells.

Abstract: A battery system, including multiple battery cells which have respective battery cell housings having electrical terminals via which the battery cells are electrically connected to one another, wherein a cell branch connecting the terminals to a galvanic cell is arranged in each of the battery cell housings, wherein a bypass branch for bridging the respective galvanic cell is arranged in each of the battery cell housings; each cell branch has a switching element for opening and closing the cell branch and each bypass branch has a bridging switching element for opening and closing the bypass branch.

Abstract: A cell having a galvanic cell. The galvanic cell has a first and a second electrode connection. The first electrode connection is connected to a first cell connection and the second electrode connection is connected to a second cell connection. The battery cell has a third and a fourth cell connection and at least four semiconductor switching elements, by which the electrode connections, depending on a respective switching state of the semiconductor switching elements, can each be electrically coupled to the third or the fourth of the cell connections. These are primarily used to remove and add individual battery cells from or to the system and/or to connect cells in parallel, independently of the (activation or deactivation) state of the preceding and following cells.

Abstract: Electrical battery device having at least one module string, in which multiple module units each including at least one battery module are electrically interconnected one after another in a series, wherein one end of the series is electrically connected to a respective battery terminal of the battery device. A respective bridging circuit is provided in the at least one module string in each case for each of its module units, which is configured to alternately bridge the respective module unit and interrupt the bridging again in dependence on a switching signal, wherein a control unit is configured to bridge at least some of the module units in chronological succession and chronologically thereafter to interrupt the bridgings again by setting the switching signal in periodically successive switching sequences.