Abstract: A method for monitoring battery cells of a primary on-board electrical system battery of a motor vehicle by galvanostatic impedance spectroscopy is provided. An AC signal having alternating currents of different frequencies is impressed onto the battery cells as an excitation signal, cell voltage signals of the battery cells are detected as frequency-dependent response signals to the excitation signal, impedance spectra of the battery cells are determined depending on the excitation signal and the response signals, and the primary on-board electrical system battery is divided into at least two subsections each having at least one battery cell in order to provide the excitation signal. The primary on-board electrical system battery is electrically connected to a secondary on-board electrical system battery of the motor vehicle.

Abstract: An energy storage module, particularly a solid state battery, an energy storage system, a vehicle and a method for measuring an electrical voltage on an energy storage module or on an energy storage system is based on two stacked and series-connected energy storage cells, each have an anode layer and a cathode layer. A contact, which is electrically connected to an anode layer located within the stack of a first energy storage cell and to a cathode layer located within the stack of a second energy storage cell, which is adjacent to the first energy storage cell, leads out of the stack such that at least one contact can be contacted from outside the stack.

Abstract: A method for monitoring battery cells of a primary on-board electrical system battery of a motor vehicle by galvanostatic impedance spectroscopy is provided. An AC signal having alternating currents of different frequencies is impressed onto the battery cells as an excitation signal, cell voltage signals of the battery cells are detected as frequency-dependent response signals to the excitation signal, impedance spectra of the battery cells are determined depending on the excitation signal and the response signals, and the primary on-board electrical system battery is divided into at least two subsections each having at least one battery cell in order to provide the excitation signal. The primary on-board electrical system battery is electrically connected to a secondary on-board electrical system battery of the motor vehicle.

Abstract: A high-voltage battery for a motor vehicle includes at least one battery module including a cell block with stacked battery cells, wherein the battery cells are embodied as solid-body cells, the internal resistance of which decreases as the temperature rises, a battery housing having a receiving space for receiving the at least one battery module, and a heat-insulating holding device for holding the at least one battery module in the receiving space. The heat-insulating holding device is designed to minimize heat exchange between the at least one battery module and the battery housing for preventing cooling of the battery cells. A motor vehicle with the high-voltage battery is also provided.

Abstract: A system for an at least partially electrically driven or hybrid vehicle includes an electronic devices that is configured to supply current to at least one of the further electrical loads on the vehicle, from a number of series-connected energy storage cells in the electrical energy storage which is smaller than the maximum number of series-connected energy storage cells in the energy storage, in the event that a maximum current for the at least one further electrical load exceeds the maximum current which can be delivered by the voltage converter. The vehicle has an electrical energy storage, which is provided for driving the vehicle and comprises energy storage cells connected in series, and a voltage converter coupled to the energy storage for the supply of at least one further electrical load on the vehicle.

Abstract: A vehicle energy store for the electrical supply of an electric drive unit of a motor vehicle, includes a connection of positive potential and a connection of negative potential connected to the drive unit when the vehicle energy store is operated normally. The energy store also includes a first section connecting the connection of positive potential and the connection of negative potential to each other and in which at least one electrical energy storage cell is disposed, and a second section parallel to the first section that connects the connection of positive potential and the connection of negative potential to each other and in which at least one electrical energy storage cell is disposed. At least one semiconductor switch element is configured to be controlled to interrupt a current flowing in a respective one of the first section and the second section is disposed in each of the first section and the second section.

Abstract: A safety switch device connects a heating unit for at least one battery cell of a high-voltage battery of a motor vehicle to a power supply connection that provides a heating current for the heating unit.

Abstract: A high-voltage battery for a motor vehicle includes at least one battery module including a cell block with stacked battery cells, wherein the battery cells are embodied as solid-body cells, the internal resistance of which decreases as the temperature rises, a battery housing having a receiving space for receiving the at least one battery module, and a heat-insulating holding device for holding the at least one battery module in the receiving space. The heat-insulating holding device is designed to minimize heat exchange between the at least one battery module and the battery housing for preventing cooling of the battery cells. A motor vehicle with the high-voltage battery is also provided.

Abstract: A safety switch device connects a heating unit for at least one battery cell of a high-voltage battery of a motor vehicle to a power supply connection that provides a heating current for the heating unit.

Abstract: A vehicle energy store for the electrical supply of an electric drive unit of a motor vehicle, includes a connection of positive potential and a connection of negative potential connected to the drive unit when the vehicle energy store is operated normally. The energy store also includes a first section connecting the connection of positive potential and the connection of negative potential to each other and in which at least one electrical energy storage cell is disposed, and a second section parallel to the first section that connects the connection of positive potential and the connection of negative potential to each other and in which at least one electrical energy storage cell is disposed. At least one semiconductor switch element is configured to be controlled to interrupt a current flowing in a respective one of the first section and the second section is disposed in each of the first section and the second section.

Abstract: An energy storage module, particularly a solid state battery, an energy storage system, a vehicle and a method for measuring an electrical voltage on an energy storage module or on an energy storage system is based on two stacked and series-connected energy storage cells, each have an anode layer and a cathode layer. A contact, which is electrically connected to an anode layer located within the stack of a first energy storage cell and to a cathode layer located within the stack of a second energy storage cell, which is adjacent to the first energy storage cell, leads out of the stack such that at least one contact can be contacted from outside the stack.

Abstract: A system and method for active noise compensation in a vehicle is provided. The system has at least one apparatus for detecting a noise, a computer unit for calculating a compensation sound, at least one apparatus for generating a compensation sound which interferes with the noise, and a device for detecting at least one driver-specific parameter. The compensation sound is calculated depending on the at least one driver-specific parameter. Also provided is a motorcycle having a system for active noise compensation.

Abstract: An apparatus is provided for providing a supply voltage for operating an electrical device in a vehicle having a battery for producing the supply voltage. The battery is connected to a supply-voltage terminal for providing the supply voltage. A contacting apparatus contacts a replaceable battery for providing a charging voltage for charging the battery. In dependence on a state of charge of the battery, the replaceable battery can be electrically coupled to the main battery or disconnected from the main battery by way of the coupling apparatus.

Abstract: A system and method for active noise compensation in a vehicle is provided. The system has at least one apparatus for detecting a noise, a computer unit for calculating a compensation sound, at least one apparatus for generating a compensation sound which interferes with the noise, and a device for detecting at least one driver-specific parameter. The compensation sound is calculated depending on the at least one driver-specific parameter. Also provided is a motorcycle having a system for active noise compensation.

Abstract: A battery system has battery cells, a transformer which has a first winding which can be connected parallel to the cell arrangement, and a plurality of second windings. Each second winding can be connected parallel to one of the battery cells. The transformer includes a third winding, which is provided for feeding energy from an external energy source to the battery system.

Abstract: A vehicle includes a power electronics unit for converting energy between a DC circuit and a polyphase machine, wherein the power electronics unit has a power module, a driver board, and a control board. The power electronics unit has two DC current rails, wherein the DC circuit can be connected to the same, and the power electronics unit has phase current rails, wherein the polyphase machine can be connected to the same. The number of the phase current rails corresponds to the number of the phases of the polyphase machine. The arrangement of the power module, the driver board, and the control board corresponds to a stacked or sandwiched construction, the phase current rails are electrically connected to the power module, and the control board has a passage for each of the phase current rails, wherein one phase current rail is fed through each passage.

Abstract: A high-voltage energy storage module for supplying a voltage, in particular to a motor vehicle, includes at least two storage cells and at least one electrically conductive connection between two poles of different storage cells. The individual connection consists of multiple adjacently arranged bonding wires, and each bonding wire is secured to the two poles by means of a wire bonding.

Abstract: A circuit arrangement for operating an energy store of an electric and/or hybrid vehicle includes an analog monitoring circuit. The analog monitoring circuit is designed and arranged to detect a measurement signal that is representative of a current flowing through the energy store, and to generate a predetermined first control signal in a manner dependent on the measurement signal. The circuit arrangement further has a semiconductor switching element which is designed to electrically couple, in a first switching state, the energy store to an electrical energy network, and, in a second switching state, to electrically decouple the energy store from the electrical energy network, The semiconductor switching element includes a control terminal which is coupled by signaling technology to an output of the monitoring circuit. The switching state of the semiconductor switching element is adjustable in a manner dependent on the first control signal.

Abstract: A safety circuit arrangement is provided for an electrical drive unit, wherein the electrical drive unit includes a traction battery, an intermediate circuit capacitance connected in parallel to the traction battery, and an electric machine which can be supplied with electrical power by the traction battery. The electric machine has a plurality of phases which can be connected to the traction battery via a controllable inverter having a plurality of switch elements.

Abstract: A system for an at least partially electrically driven or hybrid vehicle includes an electronic devices that is configured to supply current to at least one of the further electrical loads on the vehicle, from a number of series-connected energy storage cells in the electrical energy storage which is smaller than the maximum number of series-connected energy storage cells in the energy storage, in the event that a maximum current for the at least one further electrical load exceeds the maximum current which can be delivered by the voltage converter. The vehicle has an electrical energy storage, which is provided for driving the vehicle and comprises energy storage cells connected in series, and a voltage converter coupled to the energy storage for the supply of at least one further electrical load on the vehicle.