A method for predicting impending damage to a joint between two electrical conductors in a motor vehicle electrical system, apparatus and motor vehicle

摘要

The invention relates to a method for predicting an imminent damage (24) of a connection point (16c) between two electrical conductors (16a, 16b) in a motor vehicle electrical system (12), wherein a value of an electrical variable (U, Rx) is determined which is at least is associated with an electrical resistance (Rx) of the junction (16c), and the prediction of the impending damage (24) is made in dependence on the value of the electrical quantity (U, Rx). The invention provides that the value of the electrical variable (U, Rx) is repeatedly determined during operation of the motor vehicle electrical system (12), while the connection point (16c) is traversed by an operating current having a certain operating current intensity (I).