Abstract: The invention relates to a method for charging energy storage cells of an energy storage device with a plurality of energy storage modules which are connected in series in an energy supply line, each energy storage module comprising an energy storage cell module which has at least one energy storage cell and comprising a coupling device with coupling elements. The coupling elements are designed to selectively connect the energy storage cell module in the energy supply line or to bridge the energy storage cell module.

Abstract: An energy storage system, in particular a battery having a plurality of battery cells. These battery cells are accommodated in a first container. The first container is separated from a second container by a separating element, which allows for establishing a pressure difference ?p for expansion of a gas out of the first container into the second container.

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: The invention relates to a method and a device for power management of an electrical drive for a hybrid vehicle, wherein the method comprises the following steps: detecting (S1) an adjustable power requirement for the electrical drive device and an available electrical battery capacity of the electrical energy store by means of a detecting unit (21); comparing (S2) the detected adjustable power requirement to the detected available electrical battery capacity by means of a control unit (22); and deactivating (S3) at least one of the electrical consumers in dependence on criteria specified by the control unit for one or a plurality of specified time intervals by the control unit (22), if the comparison results in a lower available electrical battery capacity than the adjustable power requirement.

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: 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 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: The invention relates to a system (100) with a battery charging device (20) with output terminals and an vehicle electrical system power supply stage (10). The vehicle electrical system power supply stage has a step-up/step-down converter (12), which is designed to raise an input voltage of the vehicle electrical system power supply stage to an intermediate circuit voltage, a direct current intermediate circuit (13), which is coupled to the step-up/step-down converter (12) at intermediate circuit nodes (14a, 14b), and a vehicle electrical system d.c.-d.c. converter (11), which is coupled to the direct voltage intermediate circuit at the intermediate circuit nodes, and which is designed to convert the intermediate circuit voltage into a direct voltage for a vehicle electrical system (1, 2), the output terminals of the battery charging device (20) being coupled to the direct voltage intermediate circuit (13) via the intermediate circuit nodes (14a, 14b).

Abstract: The present invention relates to a charging device (10) for charging an electrical energy store (20), comprising a first and a second input voltage terminal (12, 14), for connecting the charging device (10) to an AC voltage source, a first and a second output voltage terminal (16, 18) for connecting the charging device (10) to the energy store (20) to be charged, a rectifier voltage converter circuit (22), which on the input side is connected to the input voltage terminals (12, 14) and on the output side is connected to a first and a second intermediate circuit voltage terminal (24, 26) and is designed to provide an intermediate circuit DC voltage (UZK) between the intermediate circuit voltage terminals (24, 26), a DC voltage converter circuit (32) which on the input side is connected to the intermediate circuit terminals (24, 26) and on the output side is connected to the output voltage terminals (16, 18) of the charging device (10), wherein the DC voltage converter circuit (32) is designed to provide a DC o

Abstract: In a method for monitoring the charging mode of an energy store in a vehicle which is drivable via an electric machine, the energy store is connected in the charging mode to an external energy supply system via a charging circuit which includes a unit operated as the boost converter, a controllable rectifier having upstream filter capacitors, and a system filter. A DC link capacitor is switched in parallel to the energy store. During the charging mode, at least one current and/or one voltage is monitored at the input, at the output, and/or within the charging circuit, and/or a function of a control unit of the rectifier and/or of the unit operated as the boost converter is monitored. If malfunction is detected, the charging circuit is switched into a free-running mode.

Abstract: The invention relates to a device and method for discharging an energy accumulator (C), in particular an intermediate circuit capacitor, in a high-voltage grid (3), in particular in a direct current intermediate circuit in a motor vehicle, having a direct current converter (5) connected downstream of the high-voltage grid (3), a low-voltage grid (4) connected downstream of the direct current converter (5), an power grid (7) connected downstream of the direct current converter (5) and parallel to the low-voltage grid (4) for supplying energy to a control circuit (9) of the direct current converter (5), and a first controllable switching element (S) which is connected to the connecting line between the direct current converter (5) and the low-voltage grid (4) and by means of which, in the event of a disturbance of the low-voltage grid (4), the direct current converter (5) and the power grid (7) can be disconnected from the low-voltage grid (4).

Abstract: The invention relates to a system (2) for high-voltage disconnection in a vehicle having at least two high-voltage carrying components (10, 12a, b, 14, 16, 18, 20) , each component having a housing (11), at least one connecting element for a data bus (4) and at least one connecting element for a high-voltage supply (9), each high-voltage carrying component (10, 12a, b, 14, 16, 18, 20) being designed to detect locally an event which is intended to trigger a high-voltage disconnection, wherein said system is characterized in that each high-voltage carrying component (10, 12a, b, 14, 16, 18, 20) is designed locally to trigger a high-voltage disconnection of the high-voltage carrying component (10, 12a, b, 14, 16, 18, 20) as a reaction to the detection of the event. As an advantageous development, access to components having a hazardous voltage is possible only after the connecting element of the data bus has been removed, the removal or disruption of which leads to rapid disconnection of the electric system.

Abstract: A circuit arrangement for de-exciting an excitation winding of a synchronous machine in the event of a fault, including a control circuit for controlling a current flow through the excitation winding, it being possible to apply a positive control voltage to the excitation winding for excitation and a negative control voltage for rapid de-excitation, and including a protective circuit which is parallel-connected to the excitation winding and which does not permit a current flow over the protective circuit in the event of rapid de-excitation and which forms a current path for limiting the voltage and de-exciting the excitation winding if at least one connecting line between the control circuit and the excitation winding is interrupted.

Abstract: A method for determining the temperature change of a feeder cable of a charging device in that, in a first task, the electromagnetic input pulse is coupled into the feeder cable, the electromagnetic input pulse being able to be reflected in the feeder cable and the reflected portion returning to the charging device as reflected electromagnetic output pulse; in a second task, the pulse shape of the reflected electromagnetic output pulse is determined; in a third task, the pulse shape of the reflected electromagnetic output pulse is compared to a reference pulse shape of the reflected reference pulse; in a fourth task, the temperature change is determined by comparing the two pulse shapes.

Abstract: In a jump-starting method between an electric vehicle providing a jump-start and an electric vehicle receiving a jump-start, the electrical systems of the two electric vehicles are temporarily interconnected electrically during the time of the jump-starting.

Abstract: An energy storage system, in particular a battery having a plurality of battery cells. These battery cells are accommodated in a first container. The first container is separated from a second container by a separating element, which allows for establishing a pressure difference ?p for expansion of a gas out of the first container into the second container.

Abstract: A method for prolonging the service life of a traction battery of an electric-powered or hybrid vehicle. The method includes recording at least one driving phase selection that encompasses a travel duration, a start of driving, or both; and recording an instantaneous state of charge of the traction battery. At least one aging parameter is minimized that encompasses the time interval between a charging process and the start of driving or the charging energy used to charge the traction battery in accordance with at least one driving phase selection; and the charging process is executed in accordance with the minimized aging parameter. Also, a charge control for implementing the method.

Abstract: A method for operating a hybrid drive system of a vehicle in which an internal combustion engine and/or at least one electrical machine drive the vehicle, the electrical machine being supplied with energy from an energy reservoir or the electrical machine supplying the energy reservoir with electrical energy, and an operating point of the hybrid drive system being set in the context of a predefined operating strategy which depends on minimization variables that take into account the fuel consumption of the internal combustion engine and the energy made available by the energy reservoir. In order to configure the operating strategy of the hybrid drive system in as variable a manner as possible, energy from an external energy source is delivered to the energy reservoir, the minimization variables to be taken into account as a result of the delivery of energy from the external energy source into the energy reservoir being evaluated in the operating strategy.

Abstract: A circuit is described for operating an auxiliary unit for starting internal combustion engines via a starter battery. The circuit is configured to receive a state-of-function signal, a state-of-charge signal and/or a state-of-health signal from a battery-management system. The respective signals indicate whether the starter battery is capable of operating the auxiliary unit, what state of charge the starter battery has and whether the starter battery is damaged. The circuit is configured to draw electrical energy from a high-voltage battery, connected to the circuit, when the state-of-function signal indicates that operation of the auxiliary unit by the starter battery is not possible, when the state-of-charge signal indicates that the state of charge of the starter battery is too low to operate the auxiliary unit and/or when the state-of-health signal indicates that the starter battery is damaged.

Abstract: An energy supply system has a number of DC choppers for converting the input voltages applied in each case into output voltages, and a number of energy storages for providing the input voltages, an energy storage being assigned to each DC chopper. An output voltage of at least one of the number of DC choppers is settable as a function of a setpoint input in order to expose the energy storage assigned to the at least one DC chopper to a load individually.