Abstract: A method and device is disclosed for application of a pressure to a battery which has at least one or more cells, in order to reduce adverse effects on operation which occur because of different battery states of charge. The device is designed to carry out the method such that the pressure is adjusted as a function of the respective battery volume and/or of the respective battery state of charge.

Abstract: A battery management system for a battery module having at least one battery cell provides a current path between poles of the battery module in response to a tripping signal. The current path prevents or terminates an arc in a fuse of the at least one battery cell after the fuse has been tripped. The battery management system can further include an apparatus to trip the fuse and provide the tripping signal in response to identifying the tripping of the at least one fuse. The battery management system can further include an apparatus to receive the tripping signal.

Abstract: A battery cell unit includes a battery cell and a monitoring device for monitoring the state of the battery cell. The monitoring device comprises an actuating device configured to activate an impedance spectroscopy mode provided by the battery cell unit, in which impedance spectroscopy mode measurement currents can be applied to the battery cell to perform impedance spectroscopy of the battery cell, said measurement currents flowing through the battery cell and comprising alternating currents at different frequencies. The monitoring device also comprises a sensor device designed to detect the measurement currents and the corresponding measurement voltages, each of which is a battery cell voltage arising as a response to a measurement current, such that a complex impedance of the battery cell can be determined from the measured values of the measurement currents and the measurement voltages as a function of the frequency of the measurement currents within predetermined tolerance limits.

Abstract: The disclosure relates to a method for operating an electric traction drive system, which comprises an electric motor and a battery with a plurality of battery strings having battery modules. Each battery module is configured to be connected selectively with respect to output terminals of a respective battery string with positive polarization or negative polarization or to be bridged in the respective battery string, such that each battery string is configured to produce an adjustable output voltage. The battery modules are each monitored for proper functioning. When a technical fault in at least one battery module is detected, the at least one battery module is bridged and the traction drive system is transferred to a transition state in which the electric motor continues to be supplied and actuated by the connected battery modules in the battery module string such that a presently generated torque is maintained unchanged.

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 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: The invention relates to a traction battery having at least two serially connected battery modules, each of which has a first battery module pole, a second battery module pole, and at least one inserted series circuit and/or parallel circuit of battery cells. A first terminal of the series circuit of battery modules is connected to a first battery pole, while a second terminal of the series circuit of battery modules is connected to a second battery pole. According to the invention, at least one battery module of the at least two serially connected battery modules is a first battery module which has at least one disconnecting device and a bridging device. When triggered accordingly, the at least one disconnecting device interrupts the connection between the series circuit and/or parallel circuit of battery cells and the first battery module pole and/or the second battery module pole and/or interrupts the series circuit and/or parallel circuit of battery cells.

Abstract: Hard shell housings for electrochemical elements include a main housing element that has an interior space configured to accommodate cell components, at least one electrochemical cell, and a housing lid configured to close off the interior space of the main housing element. The main housing element is formed at least substantially from plastic, and the main housing element comprises at least one superhydrophobic material.

Abstract: Method for increasing safety when using bursting discs (BV), wherein the bursting disc (BV) is suitable for releasing gas in a controlled manner from battery systems (B), wherein a signal, in particular a warning signal, is generated in dependence upon the spatial change at least of one site on the surface of the bursting disc (BV).

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 a battery cell, and an electrode of the battery cell is connected to the battery cell housing in an electrically conducting manner by a switching element. The battery also includes a monitoring circuit, which is configured to respond to detection of an interference signal by opening the switching element. The switching element is closed during operation without interference.

Abstract: A hard shell cell housing for an individual alkali metal cell includes a housing main body with an interior space that is configured to accommodate cell components of the individual alkali metal cell, and a housing cover configured to close off the interior space. The housing main body is formed at least substantially from plastic, and further includes at least one vapor barrier layer.

Abstract: The invention relates to a method and a device for determining the properties of a battery, in particular a traction battery. Particularly the invention determines a battery state such as the capacity and/or a charging state and/or a remaining service life of the battery, preferably with an observer and a battery model for a model-based state identification. According to the invention, a querying module for querying an operational state of a consumer supplied by a battery and a first control module for starting the determination of the properties of the battery, only when the operational state of the supplied consumer shows that it does not operate in the principal mode, are provided.

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: A method for charge balancing of battery cells to be connected in parallel of a battery module includes making contact with terminals of the battery cells and measuring quiescent voltages of the battery cells; determining capacitances and internal resistances of the battery cells for determining a required duration for the charge balancing; and short-circuiting the battery cells in pairs at a low resistance and implementing the charge balancing via the internal resistances of the battery cells short-circuited in pairs. The method further includes ending the contact-making after the required duration; and producing a parallel circuit between the battery cells by fastening connecting lugs on respective terminals of the battery cells.

Abstract: A battery cell unit includes a battery cell and a monitoring and actuation unit for monitoring the function state of the battery cell. A coupling unit is provided in the battery cell unit, in which coupling unit two half-bridges forming a full-bridge are arranged, which half-bridges each comprise a first power semiconductor coupled to a positive pole of the battery cell, a second power semiconductor coupled to a negative pole of the battery cell and a central connection and are connected to a respective other output terminal of the battery cell unit via the respective central connection. The battery cell is configured to operate, in the normal operating mode, the power semiconductors of the half-bridges in such a way that a battery cell voltage of the battery cell is present at the output terminals of the battery cell unit optionally with a positive or negative orientation.

Abstract: An apparatus for providing safety measures during gas release from a vehicle battery, such as a damaged lithium-ion rechargeable battery, arranged in a volume space having an opening includes at least one shroud element. The shroud element is configured to expand into the volume space by being filled with a gas such that, upon expansion of the shroud element, openings in the shroud element are enlarged and shroud element contents are discharged into the volume space through the enlarged openings in the shroud element. The apparatus further includes a device that, upon reception of a trigger signal, is configured to fill the shroud element at least partially with carbon dioxide gas such that carbon dioxide gas is discharged into the volume space as contents of the shroud element. An installation space includes the apparatus and a method is implemented to provide safety measures during gas release from the vehicle battery.

Abstract: A battery includes at least one battery module that has several battery cells arranged next to each other on a support plate. The battery module is arranged with the support plate on a base plate of the battery or on a base plate of a lower unit of the battery. The support plate and the base plate are fixed together by at least one fixing system that includes at least two fixing elements engaging in each other. The first fixing element is arranged on the battery module and the second fixing element is arranged on the base plate. A motor vehicle includes the battery.