Robert Boschgmbh

Christoph Wenger

Eberhard Schoch

Gerhard Fiedler

Guenter Nasswetter

Wolfgang Seils

Albert Geiger

Clemens Schmucker

Michael Wolf

Marcus Bremmer

Volker Haller

Christof Maluck

Martin Brand

Juergen Schoettle

A battery monitoring device includes a sensor device, which is electrically connectable to an automobile battery and may be placed thereon, and which is arranged to detect an operating variable of the battery. The battery monitoring device further includes a detection circuit, which is connected via a cable connection to the sensor device; and a data processing circuit, which is connected via a potential isolation circuit to the detection circuit. The potential isolation circuit provides isolation of the potential level of the detection circuit from a potential level of the data processing circuit for direct components.

Battery monitoring system

A DC/DC converter for providing an output voltage includes: a connected DC voltage transformer; a supply voltage input for providing a first supply potential and a second supply potential to the DC voltage transformer; a potential point which is connectable to the second supply potential as a function of an activation state of the DC voltage transformer; an output capacitor which is connected to an output connection and to the potential point, and which is chargeable to the output voltage by activating the DC voltage transformer, and at which an output potential is tappable. The output voltage is provided between the output potential and the second supply potential.

DC/DC converter

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.

Circuit arrangement for monitoring the state of charge of an accummulator

The circuit arrangement for generating square pulses according to a magnetic field strength has an edge-triggered flip-flop a comparator connected to the flip-flop; a bridge with four bridge segments, each including an electronically controlled switch, and with a transverse branch including an energy-storing element consisting of an inductive resistor acting as a magnetic field probe; and a switching threshold resistor connected with the energy-storing element and with a signal input of the comparator. The switches are each connected in pairs in crossover fashion by the flip-flop, so that current flow in the transverse branch is reversible. An improved compensation current sensor, which is less sensitive to component tolerances, includes the circuit arrangement for generating square pulses in a controller.

Circuit arrangement for generating square pulses and improved compensation current sensor using same

A circuit arrangement for detecting a current through a consumer which is disposed between the outputs of two amplifiers which in order to be supplied with a unipolar operating voltage VCC, each have a supply voltage connection and a ground connection , is characterized in that between the connection of the operating voltage source and the supply voltage connection and/or between the ground connection and ground , an ohmic resistor is provided, at which a voltage U falls, which is proportional to the current to be detected.

Growing community of inventors

Korntal-Muenchingen, Germany

Christoph Wenger