Abstract: A battery system includes a battery, a DC voltage intermediate circuit connected to the battery, an inverter connected to the DC voltage intermediate circuit and an electric motor connected to the inverter. The DC voltage intermediate circuit includes a capacitor, and the battery includes a battery module line having a plurality of battery modules which are connected in series, and a control unit. Each battery module includes a coupling unit and at least one battery cell which is connected between a first input and a second input of the coupling unit. The coupling unit is configured to connect the at least one battery cell between a first terminal of the battery module and a second terminal of the battery module in response to a first control signal, and to connect the first terminal to the second terminal in response to a second control signal.

Abstract: A device is introduced for cell-balancing a plurality of battery cells connected in series. The device includes a measuring device which is connectable to each of the battery cells and which is configured to generate a current which is proportional to a minimum cell voltage of all the cell voltages of the battery cells and to output the current to resistors which are connected in series. The device also contains a multiplicity of comparators which compare a cell voltage of an assigned battery cell to the minimum cell voltage which is replicated by the current which is proportional to the minimum cell voltage and the resistors. The comparators are configured to output a control signal, which is dependent on a result of the comparison, to an assigned discharging unit which allows a discharge current to flow from the respective battery cell as a function of the control signal.

Abstract: An energy storage device for generating an n-phase supply voltage includes a plurality of energy supply branches that are connected in parallel, each of which is connected to an output connector of the energy storage device. Each of the energy supply branches includes a plurality of energy storage modules that are connected in series, each having at least one energy storage cell, and having a plurality of coupling modules connected to one of the plurality of energy storage modules, respectively, each configured to couple, or to bridge, the connected energy storage module with the energy supply branch. The energy storage device further includes a control system.

Abstract: A circuit for connecting a first accumulator line to a second accumulator line from an accumulator is described. The accumulator is provided for charging and discharging electrical energy via the accumulator lines. Each accumulator line has a positive pole and a negative pole for charging and discharging electrical energy. The circuit has at least one first switch which is provided for disconnecting and connecting two similar poles of the two accumulator lines.

Abstract: A lithium-ion energy store (1), comprising an electrode having a main section (2) and having a measuring section (3) electrically isolated from the main section, a counterelectrode (4) and a separator (5) between the electrode and the counterelectrode, wherein a measuring cell, which forms a part of the lithium-ion energy store, comprises the measuring section (3) of the electrode, a counterelectrode measuring section, which is situated opposite the measuring section (3) of the electrode in relation to the separator (5), and a section of the separator (5) that is arranged between the measuring sections (3) of the electrode and the counterelectrode.

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.

Abstract: A method is described for the control of a battery comprising at least one battery module string with a number of battery modules connected in a series. Each battery module comprises at least one battery cell, at least one coupling unit, a first connection and a second connection and is designed for accommodating one of at least two switching states depending on an actuation of the coupling unit. Different switching states correspond to different voltage values between the first connection and the second connection of the battery module. A first and second output voltage of the battery module string are provided and applied to an inductivity during a first and second time interval. In the process, the second output voltage has the opposite polarity of the first output voltage.

Abstract: A battery system comprises at least one battery module and a docking station on which the at least one battery module is arranged in a separately removable manner. Preferably, the docking station comprises supply and/or power connections for the battery system.

Abstract: A battery management system includes a control unit having a first micro controller arranged on the low-voltage side of the control unit, and a second micro controller arranged on the high-voltage side of the control unit. The system further includes a plurality of first voltage measuring units respectively assigned to a battery module of the battery, and a first communication connection for transmitting voltage values from the first voltage measuring units to the first micro controller. The system also has a plurality of second voltage measuring units and a second communication connection for transmitting voltage values from the second voltage measuring units to the second micro controller. The first or the second voltage measuring units are configured as min/max measuring units such that they detect a minimum and a maximum voltage value of the battery cells in the battery modules, and dismiss voltage measurement values in between.

Abstract: A method and a device for identifying an increase in temperature in a plurality of electrochemical storage cells. An electrical characteristic value of a series connection of PTC elements that are thermally coupled in each case to a storage cell is determined and an increase in temperature of a plurality of electrical storage cells is identified if a value that is obtained as a result of evaluating the electrical characteristic value achieves a predefined threshold value.

Abstract: A converter unit having at least one output. The at least one output is configured to be connected to a coil of an asynchronous machine. The converter unit is configured to provide several voltage levels at the at least one output.

Abstract: A battery comprises a number n of battery module strings, wherein n is a natural number greater than or equal to two. The battery module strings have several battery modules, and one battery module has a coupling unit. The coupling unit is configured as a voltage transformer and couples the battery modules to each other. A method of controlling the battery includes supplying a load connected to the battery with a predefined and substantially constant total power. The total power corresponds to a sum of n individual powers of the n battery module strings. The method further includes setting n?1 string voltages, which are each present at the n?1 battery module strings, according to the total power, the load, and by defining a string voltage present at an nth battery module string with amplitude and phase position. At least two of the n individual powers are asymmetrical to each other.

Abstract: A battery includes at least two battery cells arranged adjacent to one another and each arranged in a battery cell housing. Each battery cell has at least one battery cell terminal. The battery also includes one degasification element per battery cell. Each degasification element is arranged within the battery cell housing associated with the respective battery cell and is configured to discharge gases generated within the respective battery cell from the respective battery cell in the presence of a predetermined gas pressure. The battery also includes a cover configured to cover at least a part of the surfaces of the battery cells and cover the degasification elements of the battery cells in air-tight fashion. The cover has, in each case in a region of the degasification elements, predetermined breaking points assigned to the degasification elements.

Abstract: A method for determining the charge state of battery cells or battery modules of a battery includes monitoring several battery cells or at least one battery module using a plurality of cell monitoring units. The respective electric current of the battery cells or battery modules is measured by the cell monitoring units, the battery current is measured, and the measured current value is transmitted to the plurality of cell monitoring units. A charge state is calculated in each of the cell monitoring units for the respective monitored battery cells, or respectively, the at least one battery module. A battery management system is configured to carry out the method for determining the charge state of the battery cells or battery modules of the battery. A battery and a motor vehicle include the battery management.

Abstract: The invention relates to an evaluation circuit for detecting the voltage in battery cells of a battery system which are preferably connected in series. The evaluation circuit includes serially connected resistors, the number of which is equal to the number of battery cells for which the voltage is to be detected. One of the resistors is associated with each of the battery cells.

Abstract: A deactivation device for disconnecting an electrical energy source from a load includes at least two one-time switches. The one-time switches become inoperative upon switching in response to the presence of a load exceeding a critical value, thereby disconnecting an electrical connection. The one time switches are connected in parallel, and the deactivation device is configured in such a way that, except for a one-time switch, which is provided for disconnecting the energy source from the load and for connecting the energy source to the load, the at least one other one-time switch remains open. In the case of an inoperativeness of the one one-time switch, the at least one other one-time switch is used for disconnecting the energy source from the load and for connecting the energy source to the load.

Abstract: A signal processor for removing at least one unintended signal component from an input signal (ua) is proposed. The signal processor includes a filter device (130) and a processing device (150). The filter device (130) filters the input signal (uâ) and generates a filtered signal (uf), which includes the unintended signal component to be removed. The processing device (150) generates an output signal (um), which indicates a deviation of the input signal (ua) from the filtered input signal (uf). By detecting the unintended signal component first an removing this component from the input signal (uâ), the input signal will not be manipulated directly but the unintended signal component in the input signal (uâ) will be compensated. This allows to remove the unintended component from the input signal (uâ) with less distortions of the interesting components in the input signal (uâ).

Abstract: A device for measuring a maximum cell voltage among cell voltages of a plurality of battery cells connected in series includes a plurality of ohmic resistors connected in series. The device is configured to be connected to a plurality of battery cells connected in series in such a way that a respective battery cell is associated with each ohmic resistor according to the series connections. Each ohmic resistor, with the exception of a first ohmic resistor, is configured to conduct the larger of (i) a current that corresponds to the cell voltage of the associated battery cell, and (ii) the current that is conducted by the preceding ohmic resistor in the series connection.

Abstract: A power transmitter for a battery system, a battery system including such a power transmitter, and a motor vehicle including such a battery system are disclosed. The power transmitter includes a plurality of DC/DC converters, each of which has a first and a second input and a first and a second output. According to the invention, first and second inputs are designed to connect a battery module, while the DC/DC converters are connected in series at the output end.

Abstract: A device for measuring a minimum cell voltage among cell voltages of a plurality of battery cells connected in series includes a plurality of ohmic resistors connected in series. The device is configured to be connected to a plurality of battery cells connected in series in such a way that a respective battery cell of the plurality of battery cells is associated with each ohmic resistor of the plurality of ohmic resistors according to the series connections. Each ohmic resistor of the plurality of ohmic resistors, with the exception of a first ohmic resistor, is configured to conduct the smaller of a current that corresponds to the cell voltage of the associated battery cell and the current that is conducted by a preceding ohmic resistor in the series connection.