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: 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: Various embodiments include an energy cell holding device for a motor vehicle comprising: a contact plate having a cutout and an overhang. The cutout and the overhang fix the energy cell to the contact plate via a casing surface of the energy cell by form fit and/or force fit and/or substance bonding. The cutout and the overhang contact an electrical terminal of the energy cell via the casing surface of the energy cell.

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 invention relates to a battery with battery cells and a method for monitoring and controlling the battery cells of the battery. The battery has a plurality of battery cell stacks which are connected in series. A battery cell stack may have an individual battery cell or may be constructed from battery cells which are connected in parallel. Sensors monitor the charge state of individual battery cells, individual battery cell stacks, individual pairs of battery cells and/or individual pairs of battery cell stacks. A charge compensation device has a target value table of the permissible charge state of individual battery cells. The charge compensation device varies the charge compensation depending on the charge state and, when the target value for the charge state of individual battery cells is reached, the charge compensation of the battery cells is interrupted.

Abstract: The invention relates to a battery with battery cells and a method for monitoring and controlling the battery cells of the battery. The battery has a plurality of battery cell stacks which are connected in series. A battery cell stack may have an individual battery cell or may be constructed from battery cells which are connected in parallel. Sensors monitor the charge state of individual battery cells, individual battery cell stacks, individual pairs of battery cells and/or individual pairs of battery cell stacks. A charge compensation device has a target value table of the permissible charge state of individual battery cells. The charge compensation device varies the charge compensation depending on the charge state and, when the target value for the charge state of individual battery cells is reached, the charge compensation of the battery cells is interrupted.

Abstract: An energy storage cell having a flexible envelope, which cell is attached flat to a heat-conducting plate.