Continental Automotive Gmbh

Continental Automotive Technologies Gmbh

Andreas Aumer

Martin Schramme

Hans-Michael Graf

Henryk Frenzel

Manfred Frimberger

Ralf Schröppel

A method for operating a battery sensor having at least one measuring resistor and at least one voltage capture device for capturing a voltage drop across the measuring resistor and for outputting at least one measured value dependent on the captured voltage drop and an evaluation circuit. The method including determining a correction value for the measured value by the evaluation circuit, and determining a first temperature value of the measuring resistor on the basis of the determined correction value by the evaluation circuit.

Method for operating a battery sensor, and battery sensor

A method for operating a battery sensor and a battery sensor, including a first and second battery sensor connections, load current connection, current measurement device for recording load current, and first and second measuring resistor elements. The first and second measuring resistor element series connected between the load current connection and the second battery sensor connection, a reference current circuit with at least one reference resistor. The reference resistor in contact with the first battery sensor connection and a contact point between the measuring resistor elements. The electrical resistance of the first resistor element determined by switching on the reference current and recording the voltage drops across the first and second measuring resistor element and the battery voltage, determining the reference current from the battery voltage quotient and electrical resistance of the reference resistor element, and determining the electrical resistance of the first resistor element from the recorded voltage drops.

A current sensor including a measurement circuit and an electrical conductor having at least one first measurement path defined by a first pickup contact and a second pick-up contact at which a first voltage can be detected across the first measurement path, a first connection contact for electrically contacting a connection element, a second connection contact for electrically contacting a battery pole terminal, and a current feed contact for electrically contacting a device for providing a calibration current. The first measurement path is in series between the first connection contact and the second connection contact. A calibration current supplied at the current feed contact induces a current density distribution in the first measurement path, which converges with a current density distribution in the first measurement path, induced by a load current of equal current intensity supplied at the first connection contact.

Current sensor with optimized current density distribution, method for determining a load current

The invention relates to a method for determining a load current, which is based on conducting a calibration current in a particular manner and on particular calculation methods.

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Burglengenfeld, Germany

Andreas Aumer