Abstract: A method for controlling a power supply device for at least one electrical machine, having at least one storage device for electric energy (battery) and an inverter equipped with at least one reactor, the inverter having dual functions, being provided for charging (charge operation) the storage device from an in particular stationary power supply system, and for supplying the electrical machine with an alternating current in driving operation. A setpoint charge power is specified for the charge operation, and the reactor current is set accordingly by the inverter. Furthermore, a power supply device is also described.

Abstract: A method for reducing a driving power of a vehicle drive includes detecting a temperature difference between a temperature of at least one component of the vehicle drive and a temperature threshold value, detecting an instantaneous driving state of the vehicle drive, establishing whether or not the instantaneous driving state allows for a reduction in the driving power of the vehicle drive, and reducing the driving power of the vehicle drive for lowering the temperature of the at least one component in order to increase the temperature difference if the instantaneous driving state allows for the reduced driving power.

Abstract: A power supply system for electric vehicles is described having an on-board energy storage and an on-board charging device, which is connectable to a grid connection station of a stationary power supply grid in order to charge the on-board energy storage. An interface is provided between an on-board component and a stationary component for connecting the charging unit to the grid connection station of the power supply grid during the charging operation in order to transmit operating characteristics of the power supply grid to the on-board charging device. Furthermore, a method for controlling the power supply system is also described.

Abstract: The drive mode of a hybrid drive is controlled by: detecting a drive mode change signal characterizing a planned drive mode change, and determining a torque shortfall, which would occur due to the drive mode change. Furthermore, the method provides for comparing the torque shortfall with a threshold value, and blocking a drive mode change, if the comparison step reveals that the torque shortfall is above the threshold value. Otherwise, the method provides for: automatically performing a drive mode change according to the drive mode change signal, if the comparison step reveals that the torque shortfall is not above the threshold value.

Abstract: A method for regulating the state of charge of an energy accumulator in a vehicle having a hybrid drive unit, a motor vehicle in particular, including an internal combustion engine and at least one electrical machine which can be coupled or are coupled to a power train of the vehicle. It is provided that a state of charge of the energy accumulator is regulated by a charge controller as a function of the vehicle's velocity.

Abstract: A method for operating a drive device of a vehicle, in particular a motor vehicle, which has an internal combustion engine, at least one electric machine, and at least one heatable electric accumulator, in particular a lithium ion battery, power being drawn from the electric accumulator for starting the internal combustion engine with the aid of the electric machine. It is provided that, after the start of the internal combustion engine and until the heated electric accumulator reaches a predefined minimum temperature, the electric accumulator is operated without load. Furthermore, a drive device for a vehicle, in particular for carrying out the above-described method is provided.

Abstract: Method for operating a hybrid drive, in particular a parallel hybrid drive, of a vehicle. The parallel hybrid drive includes an internal combustion engine and at least one electric drive, at least one energy storage device, and a vehicle transmission. During deceleration phases in which a torque required on the transmission input side is present, the internal combustion engine is operated either in drag mode or at a minimum drive torque.

Abstract: The invention is based on an electrochemical cell, having an electrode pack (12) and an outer skin (16) surrounding the electrode pack (12), in particular a laminated electrochemical cell. It is proposed that a connection element (30) for an air vent (40) is provided.

Abstract: A DC-DC converter system having a DC-DC converter including a power transistor and a control unit is provided, which control unit provides control signals for triggering the power transistor. The DC-DC converter is operable in two operating modes: in a first operating mode, the DC-DC converter operates at high efficiency; and in a second operating mode, the DC-DC converter operates at low efficiency. The high power loss released in the second operating mode is used in the warm-up phase after the start of a motor vehicle engine as an additional heating system.

Abstract: The invention is based on a device having at least one electrochemical cell (10), which is embodied as essentially flat and has laterally protruding cooling lugs (20, 22) for electrical contacting. It is proposed that each cell (10) is enclosed between two housing parts (30, 40) that clamp the cell (10) between them with pressure force in at least some regions.

Abstract: A method for regulating the state of charge of an energy accumulator in a vehicle having a hybrid drive unit, a motor vehicle in particular, including an internal combustion engine and at least one electrical machine which can be coupled or are coupled to a power train of the vehicle. It is provided that a state of charge of the energy accumulator is regulated by a charge controller as a function of the vehicle's velocity.

Abstract: A DC-DC converter system having a DC-DC converter including a power transistor and a control unit is provided, which control unit provides control signals for triggering the power transistor. The DC-DC converter is operable in two operating modes: in a first operating mode, the DC-DC converter operates at high efficiency; and in a second operating mode, the DC-DC converter operates at low efficiency. The high power loss released in the second operating mode is used in the warm-up phase after the start of a motor vehicle engine as an additional heating system.