Abstract: A direct current converter includes a plurality of direct current converter modules having electrical input voltages and output voltages that differ from each other. The plurality of direct current converter modules are electrically connectable to one another to form a plurality of subsystems such that a high-voltage electrical voltage is convertible into different low-voltage electrical voltages. The plurality of direct current converter modules are configured as a shared integrated assembly. At least one of the plurality of subsystems is always active.

Abstract: A component arrangement for an electric high-voltage on-board power supply of a vehicle includes a shared EMC filter, a shared intermediate circuit, a plurality of electrical components, and a shared housing. The shared EMC filter and the shared intermediate circuit are provided for the plurality of electrical components. The plurality of electrical components are disposed in the shared housing together with the shared EMC filter and the shared intermediate circuit. The plurality of electrical components are interconnected in parallel with the shared intermediate circuit and the shared EMC filter and there is otherwise no electrical connection between them.

Abstract: An electrical drive system for a vehicle includes an electrical three-phase machine for driving the vehicle, an electrical energy storage device for electrically supplying the electrical three-phase machine during a driving operation of the vehicle, an inverter of the electrical three-phase machine, which inverter is electrically coupled to the electrical energy storage device. The system also includes a charging connection on the vehicle side for electrically coupling the electrical energy storage device to a vehicle-external charging unit. As a function of the inverter, a charge voltage of the charging connection on the vehicle side can be transformed into a supply voltage for charging the electrical energy storage device.

Abstract: An electric driving system for a vehicle includes a switching device having first and second switching states. In the first switching state, in which a charging port is directly connected with an electrical energy storage device of the vehicle, the electrical energy storage device is charged with an input voltage applied to the charging port. In the second and third switching states the charging port is connected with the electrical energy storage device via an inverter such that the electrical energy storage device can be charged depending on the inverter.

Abstract: An electric drive system for a vehicle includes first and second three-phase electric machines driving a vehicle axle and an electrical energy store electrically supplying the first and second three-phase electric machines during a driving operation of the vehicle. A first and second inverter of the first and second three-phase electric machines, respectively, are each coupled to the electrical energy store. The system also includes an onboard charging terminal for electrically coupling the electrical energy store to a charging unit external to the vehicle. According to the first and/or second inverter, a charging voltage of the onboard charging terminal is converted into a supply voltage for charging the electrical energy store.

Abstract: A method is disclosed for conducting a pre-charging process of an onboard electrical system of a vehicle and for a charging process of a vehicle battery of the vehicle. The charging process immediately follows the pre-charging process. The vehicle battery is galvanically connected to a first onboard electrical sub-system of the onboard electrical system by a first switch element and a changeover switch and is galvanically separated from a charging path of the onboard electrical system by a second switch element. A line capacitor in the charging path is pre-charged to a first voltage value by a power source electrically connected to the charging path. A capacitor in the first onboard electrical sub-system is pre-charged to a second voltage value by the vehicle battery, wherein the vehicle battery is charged by the power source on the basis of the respective state of charge of the line capacitor and the capacitor.