Abstract: The invention relates to a DC-DC converter which is designed to supply a low-voltage network comprising a low-voltage battery and a battery sensor circuit with a low voltage, having a pulse generation device which is designed to feed electrical pulses into the low-voltage network in order to test the low-voltage battery using the battery sensor circuit.

Abstract: The invention relates to a DC-DC converter which is designed to supply a low-voltage network comprising a low-voltage battery and a battery sensor circuit with a low voltage, having a pulse generation device which is designed to feed electrical pulses into the low-voltage network in order to test the low-voltage battery using the battery sensor circuit.

Abstract: A method and an apparatus for determining a torque (MGL) of an electrical machine (19), in particular a generator (19) in a motor vehicle, are proposed. The method and the apparatus are characterized in that by a unit (43), the torque (MGL) of the electrical machine (19) is ascertained as a function of a current electrical power (PG) of the generator (19), a current generator rpm (NG), and a current generator efficiency (nG).

Abstract: A circuit configuration for monitoring the state of charge of an accumulator battery, which is installed in particular in a motor vehicle, has a control unit that records and evaluates the flow of current out of or into the accumulator battery. The control unit is able to be shifted into a state with low current consumption (sleep mode), out of which it may be brought again by an activation signal. Moreover, a sensor is provided that emits a signal in response to a flow of current out of or into the accumulator battery.

Abstract: A method for turning various classes of loads on and off by means of switch elements in the context of energy management performed by a control unit, particularly in a motor vehicle, is described, in which the triggering of the switch elements is done such that the selected priorities for triggering the switch elements can be varied during operation, that is, dynamically. This enables an adaptation of the switching priorities during ongoing operation as a function of the operating state. The turn-off of loads is done by varying the switching priority in such a way that the perceptibility of the operating states is suppressed as much as possible, and the priorities can also be varied in accordance with person-specific criteria.

Abstract: A circuit configuration for monitoring the state of charge of an accumulator battery, which is installed in particular in a motor vehicle, has a control unit that records and evaluates the flow of current out of or into the accumulator battery. The control unit is able to be shifted into a state with low current consumption (sleep mode), out of which it may be brought again by an activation signal. Moreover, a sensor is provided that emits a signal in response to a flow of current out of or into the accumulator battery.

Abstract: A method and a device are presented for power distribution in a motor vehicle having at least one battery and at least one generator. In this case a hierarchical control structure is used which has a higher-level component and a component on a lower level for the control of the at least one generator and the at least one battery. Between the higher-level and the lower-level components, specified interfaces with specified communication relations are provided. Communication relations are specified as instructions which are to be executed by the components to which they are addressed. Requests should be met by the components to which they are addressed, and queries are answered by the queried components. The power or voltage is set between the component of the at least one generator and the higher-level component as an instruction.

Abstract: A method and an apparatus for determining a torque (MGL) of an electrical machine (19), in particular a generator (19) in a motor vehicle, are proposed. The method and the apparatus are characterized in that by a unit (43), the torque (MGL) of the electrical machine (19) is ascertained as a function of a current electrical power (PG) of the generator (19), a current generator rpm (NG), and a current generator efficiency (nG).

Abstract: A method and an arrangement for controlling electrical consumers in a vehicle are suggested with a control structure being provided for the consumers, the control structure including at least a higher-ranking consumer management which receives requests from the consumers with respect to the consumer power individually or as sums. The control structure further includes a coordinator for the vehicle electrical system and the power generation thereof, the coordinator receiving the sum of the requested electric consumer power from the consumer management. The coordinator of the vehicle electrical system adjusts the requested electric power via orders to the vehicle electrical system components and the consumer management takes the generated electrical power via control of the consumers.

Abstract: The apparatus for energy distribution in a motor vehicle includes a vehicle electrical power supply system (11) with a generator (13) regulated by a voltage regulator (21), a battery (12) and consumers and a control arrangement (10) receiving required information from the power supply system for determining control parameters for engine or power supply system components. The control arrangement (10) includes the voltage regulator (21) and a supply system managing device (20). The supply system managing device (20) includes a device (24) for establishing an energy management strategy and a pre-control device (23) for generating a differential output for input to the device (24) according to an actual power and required power with respect to reference voltage. The pre-control device (23) and the device (24) for establishing an energy management strategy cooperate to determine a power supply set voltage (U_s) from the required information.