Method and apparatus for detecting a disconnection in the charge line between a generator and an electric battery in a motor vehicle
AssigneeBayerische Motoren Werke Aktiengesellschaft
InventorPeter Pawlik
Life of this patent
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Abstract
In a method for detecting a disconnection in the charge line between a generator and an electric battery in a motor vehicle, the generator output voltage is measured and is evaluated at least with respect to the ripple voltage. A disconnection in the charge line is detected when the ripple voltage has reached or exceeded a predetermined ripple threshold value, preferably after the generator output voltage has reached or exceeded a predetermined load shedding threshold value.
Claims16
A method for detecting a disconnection in a charge line between a generator and an electric battery in a motor vehicle, the method comprising the acts of:
- measuring a generator output voltage and evaluating said measured output voltage at least with respect to a ripple voltage;
- and
- determining whether said ripple voltage reaches or exceeds a predetermined ripple threshold value to detect the disconnection in the charge line.
An apparatus for detecting a disconnection in a charge line between a generator and an electric battery in a motor vehicle, the apparatus comprising:
- means for measuring and evaluating a generator output voltage at least with respect to a ripple voltage;
- and
- means for determining when the ripple voltage reaches or exceeds a predetermined ripple threshold value so as to detect the disconnection in the charge line.
Dependencies are inferred from the claim text.