Abstract: An electric heating device, in particular for mobile applications, having a substrate and a heat conductor layer formed on the substrate. The heat conductor layer is interrupted by at least a first isolating interruption, the first isolating interruption separating at least a first and a second layer portion of the heat conductor layer from one another. The first layer portion is connected at a first end to a first terminal, for example positive pole, and the second layer portion is connected at a first end to a second terminal, for example negative pole. The first layer portion is connected at a second end to the second layer portion and is connected via this second layer portion to the second terminal.

Abstract: A method for working a first component and a second component comprises the following steps: providing the first component, which comprises a thermally sprayed electrically conductive layer, providing the second component, which has a longitudinally extended strip of copper, which at least in a first region has a thickness transversely to the longitudinal direction of more than 0.1 millimeter, arranging the strip and the layer one on top of the other, so that the first region of the strip and the layer have a contact region in common with one another, emitting a laser beam onto the contact region and forming a welded connection, which connects the strip and the layer to one another.

Abstract: An apparatus for a heating device for a vehicle comprises a layer stack which, in a stacking direction, has a heating conductor layer, an electrically conductive layer which forms a contact region, wherein a contour in a projection in the stacking direction of the electrically conductive layer is prespecified, in order to prevent a hotspot on the electrically conductive layer, by at least one of a prespecified width of a front side of the electrically conductive layer which faces a central region of the heating conductor layer, a prespecified distance from a joint of the heating conductor layer, and a prespecified curvature of the contour.

Abstract: An electrical heating device for mobile applications, includes a substrate and a heat-conducting layer formed on the substrate. The heat-conducting layer has at least one heat-conducting track that is arranged on the substrate, and the heat-conducting track is structured such that a multiplicity of track sections, separated from one another by insulating gaps, is formed. The heat-conducting track has at least one deflection section at which the heat-conducting track is deflected and which is arranged between a first and a second track section, wherein the first and the second track section have a smaller curvature in comparison with the deflection section. The heat-conducting track in the first track section or in the deflection section branches into at least two branch tracks separated from one another by one or more branch insulating gaps. The branch tracks meet up again in the second track section or in the deflection section.

Abstract: An apparatus for a heating device for a vehicle comprises a layer stack which, in a stacking direction, has a heating conductor layer, an electrically conductive layer which forms a contact region, wherein a contour in a projection in the stacking direction of the electrically conductive layer is prespecified, in order to prevent a hotspot on the electrically conductive layer, by at least one of a prespecified width of a front side of the electrically conductive layer which faces a central region of the heating conductor layer, a prespecified distance from a joint of the heating conductor layer, and a prespecified curvature of the contour.

Abstract: A method for working a first component and a second component comprises the following steps: providing the first component, which comprises a thermally sprayed electrically conductive layer, providing the second component, which has a longitudinally extended strip of copper, which at least in a first region has a thickness transversely to the longitudinal direction of more than 0.1 millimeter, arranging the strip and the layer one on top of the other, so that the first region of the strip and the layer have a contact region in common with one another, emitting a laser beam onto the contact region and forming a welded connection, which connects the strip and the layer to one another.