Abstract: A modular multi-level converter including modules each having switching elements and at least one electrical energy storage element, wherein a first number of modules are interconnected to form a closed ring, and at least two taps are arranged between respective adjacent individual modules of the closed ring. Wherein at at least two taps respectively a second number of modules are provided as a phase module branching off from the closed ring and forming a star string comprising at least two modules, the phase module connected to the respective tap on one end and forming a phase terminal at an other end. Wherein the switching elements enable interconnection of energy storage elements of adjacent modules, as a result of which between two adjacent phase terminals a voltage difference is provideable, which is regulatable by a control unit in accordance with a polyphase rotating field profile.

Abstract: A charging plug for a charging column having a contact carrier and a housing shell. The housing shell has a first duct and a second duct, the first duct and the second duct leading into the contact carrier. The first duct is bent to a greater extent than the second duct. Also described is a corresponding charging column.

Abstract: A circuit for protecting energy storage cells in which at least one energy storage cell is part of an AC battery having at least one module. The at least one module includes at least one half-bridge having two power semiconductor switches, a module storage element and a module controller. The at least one module is connected to the at least one energy storage cell to form a first connection and the first connection between the at least one module and the at least one energy storage cell has a first fuse that can interrupt the first connection. The circuit has a second connection between the module controller of the at least one module and the at least one energy storage cell.

Abstract: A cooling device cools a charging station or a multiplicity of charging stations of a charging park. The respective charging station has an internal coolant duct for a coolant to flow through the charging station, an input-side coolant connection, an output-side coolant connection, a coolant circuit with a cooling assembly for cooling the coolant, and a pump for pumping the coolant in the coolant circuit. The coolant duct of the respective charging station is integrated into the coolant circuit. A heat accumulator or a multiplicity of heat accumulators is integrated into the coolant circuit.

Abstract: A method and device or electrically charging electric vehicles, wherein a cooling unit makes available a cooling medium, wherein the cooling unit is designed to cool, with the cooling medium, at least two electric charging devices and at least two power electronics apparatuses which are designed to electrically charge electric vehicles.

Abstract: A method for cooling power electronics circuits, in which a printed circuit board is produced according to a prescribed circuit board process and is populated with at least one power electronics components. Contact connecting at least one location on at least one metallic conductor track running on a surface of the printed circuit board that includes at least one metal element, which is both electrically conductive and heat-conductive and the physical height of which is designed to be at least as large as that of the at least one power electronics component. A cooling plate is placed in a planar manner onto the at least one power electronics component and/or the at least one metal element.

Abstract: A user interface for a charging column having a display and a touch-sensitive surface. The display and the surface are adhesively bonded to one another by an optically clear adhesive.

Abstract: A charging plug for an electric automobile has a plug head and an insulation body. The plug head and the insulation body are connected in a releasable manner in such a way that the insulation body can be exchanged.

Abstract: A transformer device for a charging station for electrically charging vehicles with at least two charging points, having an input connection for electrical connection to an electrical power source, also having a primary winding and at least one secondary winding for each charging point. The secondary windings are DC isolated from one another and each have at least one winding section which is connected electrically in parallel. Adjacent winding sections of at least one secondary winding overlap one another at least partially in an axial direction or radial direction.

Abstract: A stator (1) for an electric machine (100) has stator laminations (3) stacked in an axial direction (A) to form a stator lamination stack (2). The stator laminations (3) have strip-shaped inserts (4) extending in a radial direction (R). The inserts (4) have a higher thermal conductivity than the rest of the stator lamination (3). The stator laminations (3) are rotated in relation to one another in an azimuthal direction (U) about an angle of rotation (D) in such a manner that the inserts (4) of directly adjacent stator laminations (3) are not arranged one above another in the axial direction (A). An electric machine (100), a motor vehicle (200) and a method for producing a stator (1) also are provided.

Abstract: An apparatus for charging a plurality of electric vehicles, wherein the apparatus has a charging module, wherein the charging module is operatively connected to a cooling component, wherein the cooling component is designed in such a way that, for the purpose of carrying away the waste heat from the charging module, a medium which carries along the waste heat is transported through a line which is routed in the ground.

Abstract: A charging cable device for a fast charging station for fast charging a battery of a vehicle with an electric drive, having a temperature control device, and a charging cable connected thereto. The charging cable has a multiplicity of fluid lines which extend from an end of the charging cable facing the temperature control device to an end facing away from the temperature control device, and are connected to one another at the end facing away from the temperature control device. The temperature control device is connected to the fluid lines of the charging cable to form a fluid circuit. The temperature control device is designed to heat a fluid in the fluid circuit. Also disclosed is a fast charging station for fast charging a battery of a vehicle with an electric drive. The fast charging station has a charging cable device at the top.

Abstract: A method for producing a mechanical and thermal system for a modular battery. The system has a module, which involves a module housing of the module being connected, on a thermally conductive module side, to a cooling apparatus. The module includes an energy storage unit and a power electronics unit, arranged on a circuit board, which are thermally isolated from each other by a first and a second thermally conductive element, which dissipates heat to the module side thermally connected to the cooling apparatus, and are integrated in the module housing, by virtue of the energy storage unit being connected to the first thermally conductive element, which contacts the module side connected to the cooling apparatus, and by virtue of the circuit board and the energy storage unit having the second thermally conductive element arranged between them, which second thermally conductive element contacts the module side connected to the cooling apparatus.

Abstract: The invention relates to a method and to a charging circuit (800) for flexible bootstrapping in power electronics circuits, comprising a blocking diode (112), at least one bootstrap transistor (804), at least one resistor (812, 822) and at least one electrical component (802), which is designed to conduct a current flow when a predetermined potential difference is exceeded. An energy storage device (102) used for controlling a power semiconductor switch (100) and a source/emitter potential of the power semiconductor switch (100) are at the same potential, charging of the energy storage device (102) being effected as soon as the potential of a supply voltage (106) is above a potential of the energy storage device (102). Overcharging is prevented as soon as the predetermined potential difference in the electrical component (802) is exceeded, and discharging of the energy storage device (102) is prevented by the blocking diode (112).

Abstract: An energy storage element for providing a voltage has a first control apparatus and modules, which modules each have an energy storage unit, a connection unit and a module control apparatus. The connection units are connected between two associated modules and have first switches and which connection units are designed to enable, on the basis of the state of the first switches, at least two connections from the group of connections including parallel connection of two modules, serial connection of two modules, bridging of at least one of the two modules which first control apparatus and which module control apparatus are together designed to make it possible to change the control of the associated connection unit during use of the energy storage element in order to reconfigure the energy storage element. The first control apparatus is designed to control the module control apparatuses.

Abstract: The present invention relates to a method for controlling a distortion spectrum that arises for a switch-based inverter (306), which modulates at least one output variable, by virtue of space vector modulation, characterized in that different switch positions (312) causing a modulation of the at least one output variable which approximates to a predefined reference signal (310), are ascertained for each chronologically sequential switching process, a respective distortion spectrum for differences between the reference signal (310) and the at least one output variable that would arise from a respective realization of these different switch positions (312) is calculated, and the switch position (314) for which the associated distortion spectrum is most suitable according to predetermined properties is selected and implemented in the inverter (306). Further provided are a corresponding system and a corresponding modulator.

Abstract: A battery system (10) has at least one battery (9) with a plurality of battery elements (1, 2, 24, n), a regulating or control unit (12) and a switching unit (3) with at least one switching element (6). The regulating or control unit (12) is configured to instruct the switching unit (3) to dynamically switch the at least one switching element (6) over time such that battery elements (1, 2, 24, n) from at least one accordingly dynamically changing subset of the plurality of battery elements (1, 2, 24, n) are connected, and a respective voltage level to be provided is provided thereby for the plurality of load consumers. In addition to providing a plurality of voltage levels, the battery elements (1, 2, 24, n) are deliberately loaded.

Abstract: A method for charging an energy store that has at least three energy storage strings each having plural energy storage modules. The energy storage modules have at least one energy storage element that receives and stores energy from an energy source and at least two switching elements. The energy store is connected to an energy source that provides a charging voltage and to an electric machine, and the energy storage modules are supplied with energy by the energy source. A DC voltage source and/or an AC voltage source are used in a selectable manner as energy source and the energy store is matched to properties of the selected energy source by switching the switching elements. Thus, the energy storage modules of a string are connected in parallel and/or in series with one another and/or at least one energy storage module of at least one energy storage string is bypassed.