Abstract: An electrochemical energy accumulator (100) and a method for balancing a multiplicity of sections (S1, S2, S3) of electrochemical accumulator modules (10) connected in parallel with one another by means of at least one UniBB module are proposed. In this context, the following steps are carried out: detecting (S100) a first state of charge (I) of a first accumulator module (M1), detecting (S200) a second state of charge (II) of a second accumulator module (M2), wherein the second accumulator module (M2) is a UniBB module, and operating (S300) the second accumulator module (M2) as a power source in order to adapt the first stage of charge (I) and the second state of charge (II) to one another.

Abstract: An electric energy storage device includes two electrical terminals. The energy storage device further includes at least one first current path configured to electrically connect to the two terminals. The energy storage device further includes at least two energy storage modules configured to be connected to form a series connection of the energy storage modules. The energy storage modules include multiple storage units and a controllable multiple-voltage level converter. The converter is configured to optionally connect the one or more storage units in the first current path for the incremental adjustment of a module voltage, as at least one of a function of a control signal of a control and regulating device of the electric energy storage device.

Abstract: The disclosure relates to a power supply device for an electrically operable vehicle having an electric drive motor. The power supply device comprises an electric energy accumulator device, a range-extender with an internal combustion engine and a generator producing alternating current. The generator is mechanically connectable to the internal combustion engine, and the energy accumulator device is configured to be charged during driving with the alternating current from the generator. The energy accumulator device comprises several power supply connections on which respectively one of several controllable potentials can be provided, and several power supply branches having several serially connected power cell modules. Several power supply branches are interconnected on one end to the neutral point and each power supply connection is connectable to one end of a power supply branch.

Abstract: The invention relates to an electric drive, in particular for a vehicle, comprising an electric motor (1) and a power supply (6), the power supply (6) being on the radial outer surface of the electric motor (1), and around the electric motor (1) angularly, in particular over an angle of 360°.

Abstract: The disclosure relates to a method for battery module balancing of a battery, which comprises at least one battery module string, wherein the at least one battery module string has a plurality of battery modules connected in series or parallel, wherein each battery module has a single or a plurality of battery cells connected in parallel or in series and a coupling unit which is designed to switch on and off the battery module, said method comprising the steps of: determining a battery module state of at least two battery modules; switching off individual battery modules having a low battery module state, wherein the low state is defined by a defined ratio to an initial state of the battery modules or by a result of a comparison of all detected battery module states.

Abstract: The invention relates to a lithium-ion energy store (1), comprising an electrode (2, 3) having a main segment (2) and having a measurement segment (3) electrically isolated from the main segment (2), a counter-electrode (4), and a separator (5) between the electrode (2, 3) and the counter-electrode (4), wherein a measuring cell (3, 4), which forms part of the lithium-ion energy store (1), comprises the measuring segment (3) of the electrode (2, 3), a counter-electrode measuring segment, which is opposite the measuring segment (3) of the electrode (2, 3) with respect to the separator (5), and a segment of the separator (5) in arranged between the measuring segment (3) of the electrode (2, 3) and the counter-electrode measuring segment, and a main cell (2, 4), which forms part of the lithium-ion energy store (1), comprises the main segment (2) of the electrode (2, 3), a counter-electrode in main segment, which is opposite the main segment (2) of the electrode (2, 3) with respect to the separator (5), and a segm

Abstract: A battery includes at least one battery module line, a sensor means for determining a charging stage of a battery cell, and a control unit. The battery module line includes a plurality of battery modules mounted in series, each module having at least one battery cell and a coupling unit. The at least one battery cell is mounted between a first input and a second input of the coupling unit, and the coupling unit is configured (i) to switch the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module, on a first control signal, and (ii) to connect the first terminal to the second terminal on a second control signal. The sensor means is connectable to the at least one battery cell of each battery module.

Abstract: Disclosed are an electrochemical energy store and a method for connecting cells of an electrochemical energy store. According to the invention, the following steps are carried out: determination of a first set-point for an output voltage of the energy store; determination of a first probability (Pon) for connecting a first cell, the first probability (Pon) pre-determining the connection of the first cell to the electrochemical energy store; definition of a first condition limit value and a second condition limit value for all cells of the electrochemical energy store; calculation of a first condition value for the first cell, and independently of the first probability (Pon), non-connection of the first cell to the electrochemical energy store at a first time, if the condition value lies below the first condition limit value.

Abstract: The present invention relates to a lithium-ion energy store, comprising an electrode comprising a main section and comprising a measurement section electrically isolated from the main section, a counterelectrode and a separator between the electrode and the counterelectrode, wherein a measurement cell, which forms part of the lithium-ion energy store, comprises the measurement section of the electrode, a counterelectrode measurement section, which is opposite the measurement section of the electrode in relation to the separator, and a section of the separator which is arranged between the measurement sections of the electrode and the counterelectrode measurement section, and a main cell, which forms part of the lithium-ion energy store, the main section of the electrode, a counterelectrode main section, which is opposite the main section of the electrode in relation to the separator, and a section of the separator which is arranged between the main section of the electrode and the counterelectrode main sectio

Abstract: The invention relates to a method and a device for detecting a current in a measuring path, the current in said measuring path corresponding to a current in a power path. An electric current is detected by a current measuring instrument in the measuring path, while simultaneously part of the electric current is conducted parallel to the current measuring instrument by a bypass device, in order to reduce the load on the current measuring instrument.

Abstract: A battery management system includes several first measuring units, each associated with at least one respective battery module of the battery to detect a measured variable. The battery management system also includes a control device having a first microcontroller and a second microcontroller, a first communication connection configured to transfer data between the first measuring units and the control device, and several second measuring units configured to detect the measured variable from the battery modules of the battery in addition to the detection of the measured variable by the first measuring units. A second communication connection is used to transfer data between the second measuring units and the control device. The first microcontroller is configured to evaluate measurement data detected by the first measuring units, and the second microcontroller is configured to evaluate measurement data detected by the second measuring units independently of the first microcontroller.

Abstract: The invention relates to a circuit arrangement having a switching device (1) which is designed to provide a first voltage (UE) and a first electrical current (IE) in a power path and to provide a second voltage (US) and a second electrical current (IS) in a measuring path for the duration of a switching period, wherein the first electrical current corresponds to the second electrical current; having a current measuring apparatus (2) which is arranged in the measuring path and is designed to provide an output signal (UM) which corresponds to the first electrical current; and having a control circuit (3, 4) which is designed to activate the current measuring apparatus for the duration of a measuring period and to deactivate the current measuring apparatus again after the measuring period expires.

Abstract: The invention relates to the evaluation of a variable of an electric current in a power path by evaluating another electric current in a measuring path. To avoid excessively large electric currents in the measuring path, the current in said path is limited to a predetermined maximum limit value.

Abstract: The disclosure relates to a method and a control device for controlling at power semiconductor switches connected in parallel for switching a total current. The semiconductor switches each have a gate terminal. An input terminal for feeding the total current, an output terminal for discharging the total current, and a joint control terminal for receiving a joint control signal that has the state ‘disconnect’ or ‘connect’ are provided. The power semiconductor switches are each connected between to the input terminal and the output terminal. At least one ascertainment unit is designed to receive the joint control signal, ascertain individual control signals in accordance with the joint control signal to control the individual power semiconductor switches, and output the individual control signals to the gate terminals of the power semiconductor switches. The individual control signals each have the state ‘disconnect’ or ‘connect’ and differ at least temporarily.

Abstract: A battery management system for a battery module string includes battery modules. The battery modules are electrically connectable to poles of the battery module string and individually electrically disconnectable. The battery module string is configured to generate an AC voltage by disconnecting and connecting the battery modules. The battery management system is configured to assign a respective first time period to each first battery module of the battery modules based on position of each first battery module in a battery module list. Each of the first battery module is electrically connected within a half-cycle of the AC voltage during the respective first time period.

Abstract: The invention relates to an inverter circuit (80) which comprises first and second switching means (1, 2) that are connected, in an electrical path (10), in series to one another and parallel to a DC link capacitor (20). Said inverter circuit (80) also comprises an output (9) and two inputs (11, 12) which are each electrically-conductively connected to a pole of the DC link capacitor (20) and can each be connected to a pole of an energy store. Said inverter circuit (80) also comprises a voltage limitation element (30) which is electrically-conductively connected to the electrical path (10) by a first connection between the two switching means (1, 2), and to the control connection (3) of the second switching means (2) by a second connection.

Abstract: A battery system with at least one module includes a plurality of battery cells. A cell voltage detecting circuit is associated with each battery cell of the plurality of battery cells. The cell voltage detecting circuits of the at least one module are connected to a multiplexer. An output of the multiplexer is connected to a communication bus via an analog-digital converter. The communication bus is connected to an evaluating unit. The multiplexer is additionally connected to at least one auxiliary voltage source that is known to the evaluating unit. In a method for monitoring a battery system with at least one module including a plurality of battery cells, a voltage of each of the battery cells is detected and fed to an evaluating unit via a cell voltage detecting unit. An output signal of the cell voltage detecting unit is tested for plausibility.

Abstract: The invention relates to a semiconductor switch and to a method for determining a current in the power path of a semiconductor switch. For this purpose, a semiconductor switch, according to the invention, has a plurality of sense connections, wherein each of said sense connections provides an individual output signal that is proportional to the current in the power path of the semiconductor switch. The evaluation of the current in the power path can be optimized by the appropriate selection of one of the plurality of sense connections in accordance with the current in the power path of the semiconductor switch.

Abstract: The invention relates to an electric drive system with an n-phase electric machine, n>1, having at least two multiphase winding strands; a first inverter, the output connections of which are connected to the phase connections of a first of the multiphase winding strands of the electric machine; a second inverter, which is connected in parallel to the first inverter and the output connections of which are connected to the phase connections of a second of the multiphase winding strands of the electric machine; and a DC voltage source, which has a plurality of battery modules connected in series and a first output connection of which is connected to a first input connection of the first inverter and second output connection of which is connected to a first input connection of the second inverter.

Abstract: A battery comprises a plurality of battery modules, a plurality of monitoring units with a respective monitoring unit connected to a battery module, a battery control unit, and a first communication network to which the monitoring units are connected. The first communication network is configured to transmit data from or to the battery control unit. Furthermore, the battery comprises a second communication network configured to transmit an activation signal for activating a monitoring unit to a further monitoring unit.