Abstract: The disclosure relates to a power circuit for power supply in an electrically driven vehicle. The power circuit includes a direct voltage connection, an electrical traction drive, and a DC/AC converter. The converter includes an alternating voltage side connected to the traction drive. A DC/DC converter of the power circuit includes two converter sides. The first converter side is connected to a direct voltage side of the DC/AC converter via a coupling point. The direct voltage connection is likewise connected to the coupling point. The disclosure further relates to a stationary energy supply system designed to be complementary and to connect to the power circuit.

Abstract: An AC charging device for a motor vehicle has a neutral conductor, at least one phase conductor, and at least one rectifier. The neutral conductor and the phase conductor are connected to the rectifier and the rectifier is furthermore electrically connected to at least one smoothing capacitor. The AC charging device includes a precharge circuit arranged between a mains connection of the AC charging device and the smoothing capacitor. The precharge circuit is designed to precharge the smoothing capacitor. The phase conductor, in a connection section, is connected to at least one further phase conductor of the AC charging device by way of a cross-connection line, which has a cross-connection switch for disconnecting the phase conductor and the further phase conductor. The precharge circuit is arranged between a mains connection of a first phase conductor of the phase conductors and the connection section.

Abstract: A vehicle electrical system is equipped with an inverter, an electrical energy store, an electrical machine and an AC transmission terminal. The inverter has a first and a second side and is configured to transmit power between these sides. The first side of the inverter is connected to the energy store via input current terminals of the inverter. The second side of the inverter is connected to the electrical machine via phase current terminals of the inverter. The inverter has at least two H-bridges. Each of the H-bridges bypasses the two sides of the inverter. The AC transmission terminal is connected to the second side of the inverter.

Abstract: A vehicle-side circuit for supplying power in an electrically driven vehicle is provided. The power circuit includes an external AC voltage terminal; at least one DC/AC converter having an AC voltage side; and an electrical machine having a plurality of windings, each of which has a first tapping. The electrical machine is connected to the AC voltage side of the DC/AC converter. A switching device is connected to the plurality of windings and to a signal shaping filter having a plurality of first capacitors. The signal shaping filter is connected between the DC/AC converter and an external AC terminal. The switching device may interconnect the windings within the electrical machine or may connect the first tappings of the plurality of windings within the signal shaping filter to the plurality of first capacitors to form an at least third-order low-pass filter.

Abstract: AC charging device for a motor vehicle may include: a neutral conductor; a phase conductor; a rectifier; a smoothing capacitor electrically connected to the rectifier; a mains connection; a precharge circuit arranged between the mains connection and the smoothing capacitor, the precharge circuit precharging the smoothing capacitor; and a second phase conductor electrically connected to the phase conductor by a cross-connection line. The neutral conductor and the phase conductor are connected to the rectifier. The precharge circuit is disposed in the neutral conductor.

Abstract: An AC charging device for a motor vehicle has a neutral conductor, at least one phase conductor, and at least one rectifier. The neutral conductor and the phase conductor are connected to the rectifier, to which at least one smoothing capacitor is also connected. The AC charging device has a precharge circuit arranged between a mains connection and the smoothing capacitor. The precharge circuit is designed to precharge the smoothing capacitor. The precharge circuit has at least one transistor.

Abstract: The vehicle electrical system described includes an inverter, an electrical energy store, an electrical machine and a DC transmission terminal. The inverter is connected to the energy store via input current terminals. At least two phase current terminals of the inverter are connected to the electrical machine. The inverter has at least two H-bridges. The DC transmission terminal has a positive rail connected to at least one of the phase current terminals.

Abstract: A vehicle-side charging circuit for a vehicle with electric drive. The charging circuit comprises an AC connector, a controlled rectifier which is connected to the AC connector, an electric machine with at least one winding, a current converter which is connected to the electric machine, and an energy-storage-device connector. The at least one winding of the electric machine is coupled in series between the rectifier and the current converter. In an inverter mode the current converter is fed from the energy-storage device, and in a charging mode the current converter is from an external energy source via at least one series-connected winding of the electric machine and charges the electrical energy-storage device.

Abstract: A storage-battery charging device for a motor vehicle is configured to be arranged in the motor vehicle. The device includes a first stage with a power correction filter, and a second stage with an inverter. The first stage is electrically connected to the second stage by way of an intermediate node, the intermediate node being directly electrically connected to a feed-in connection point for direct voltage. The feed-in connection point is designed for direct electrical coupling to a high-voltage vehicle electrical system of the motor vehicle.

Abstract: A motor vehicle on-board power system with a power converter, windings, an electric machine and a delta switch group is described. The electric machine is connected to the power converter, wherein a DC external connection is provided. The delta switch group connects the windings in a delta configuration. At least one switch of the delta switch group also connects at least one alternating current connection of the power converter to the DC external connection. A configuration controller actuates the delta switch group and has, on the one hand, the function of actuating the delta switch group in the closed state or open state within a driving state, according to a configuration specification. When energy is transmitted via the DC external connection, at least one switch of the delta switch group is actuated by the configuration controller according to a closed switching state. In addition, an associated method is described.

Abstract: A vehicle electrical system is equipped with an inverter, an electrical energy store, an electrical machine and an AC transmission terminal. The inverter has a first and a second side and is configured to transmit power between these sides. The first side of the inverter is connected to the energy store via input current terminals of the inverter. The second side of the inverter is connected to the electrical machine via phase current terminals of the inverter. The inverter has at least two H-bridges. Each of the H-bridges bypasses the two sides of the inverter. The AC transmission terminal is connected to the second side of the inverter.

Abstract: A vehicle electrical system having an electrical energy store,, a direct voltage converter and a direct current transmission connection is described. The direct current transmission connection is connected to the energy store via the direct voltage converter. The vehicle electrical system also has a bypass switch which connects the electrical energy store in a switchable fashion to the direct voltage transmission connection. In addition, a method, a charging system, a charging station and a further vehicle electrical system are described.

Abstract: A method and a vehicle electrical system having an inverter, an electrical energy store, an electrical machine and an AC transmission terminal. The inverter has first and second sides and is configured to transmit power between these sides. Two output terminals of the inverter are connected or connectable to the energy store on the first side of the inverter. At least two phase current terminals of the inverter are connected or connectable to the electrical machine on the second side of the inverter. At least one of the charging inputs of the vehicle electrical system is connectable to a respective inner motor phase of the electrical machine by a switching device controlled by a controller. The vehicle electrical system initially charges the electrical energy store with a first voltage, and then charges the electrical energy store with a second voltage, which second voltage is higher than the first voltage.

Abstract: The vehicle electrical system described includes an inverter, an electrical energy store, an electrical machine and a DC transmission terminal. The inverter is connected to the energy store via input current terminals. At least two phase current terminals of the inverter are connected to the electrical machine. The inverter has at least two H-bridges. The DC transmission terminal has a positive rail connected to at least one of the phase current terminals.

Abstract: A vehicle-side circuit for supplying power in an electrically driven vehicle is provided. The power circuit includes an external AC voltage terminal; at least one DC/AC converter having an AC voltage side; and an electrical machine having a plurality of windings, each of which has a first tapping. The electrical machine is connected to the AC voltage side of the DC/AC converter. A switching device is connected to the plurality of windings and to a signal shaping filter having a plurality of first capacitors. The signal shaping filter is connected between the DC/AC converter and an external AC terminal. The switching device may interconnect the windings within the electrical machine or may connect the first tappings of the plurality of windings within the signal shaping filter to the plurality of first capacitors to form an at least third-order low-pass filter.

Abstract: A vehicle-side charging circuit for a vehicle with electric drive. The charging circuit comprises an AC connector, a controlled rectifier which is connected to the AC connector, an electric machine with at least one winding, a current converter which is connected to the electric machine, and an energy-storage-device connector. The at least one winding of the electric machine is coupled in series between the rectifier and the current converter. In an inverter mode the current converter is fed from the energy-storage device, and in a charging mode the current converter is from an external energy source via at least one series-connected winding of the electric machine and charges the electrical energy-storage device.

Abstract: The disclosure relates to a power circuit for power supply in an electrically driven vehicle. The power circuit includes a direct voltage connection, an electrical traction drive, and a DC/AC converter. The converter includes an alternating voltage side connected to the traction drive. A DC/DC converter of the power circuit includes two converter sides. The first converter side is connected to a direct voltage side of the DC/AC converter via a coupling point. The direct voltage connection is likewise connected to the coupling point. The disclosure further relates to a stationary energy supply system designed to be complementary and to connect to the power circuit.