The invention, according to a first aspect, relates to a cover (4) of an electronic interface housing (300) of an electrical heating device for a motor vehicle, the cover (4) comprising at least one pressing member (44a, 44b) and at least one pressing element (45) which are configured to be in contact with a printed circuit board (5) when the cover (4) is fixed on the electronic interface housing (300), a free end of the at least one pressing member (44a, 44b) extending in a first transverse plane (451) and a free end (4501) of the at least one pressing element (45) extending in a second transverse plane (452), the at least one pressing member (44a, 44b) and the at least one pressing element (45) being arranged so that they project, in a direction perpendicular to a reference plane (400) of the cover (4), from an inner face of the cover (4) intended to face toward the inside of the electronic interface housing (300), characterized in that the first transverse plane (451) and the second transverse plane (452) are substantially parallel to one another and to the reference plane of the cover, strictly not coincident with one another or with the reference plane (400) of the cover (4), the second transverse plane (452) being, in a direction perpendicular thereto, closer to the reference plane (400) of the cover (4) than the first transverse plane (451).

An electric heating device includes a housing having a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one receiving pocket protrudes into the heating chamber as a heating rib. A PTC heating device with at least one PTC element and conductor tracks for energizing the PTC element with different polarities, which are electrically conductively connected to the latter and which are electrically connected in the connection chamber, are received in the housing. The PTC element and at least one of the conductor tracks are received in a heater casing. The heater casing is pressed into the receiving pocket subject to plastic deformation of the heater casing and/or the receiving pocket.

A heater assembly having a lower tank that is provided with an inlet and an outlet and has a first space, a heater case that covers the first space, has at least one heat transfer pocket that is situated in the first space, and has a second space, at least one heating module that is inserted into the heat transfer pocket such that a terminal thereof is situated in the second space, a bus bar block which is accommodated in the second space and to which the terminal is connected, and a PCB module that controls the heating module is provided. The bus bar block includes a bus bar that contacts the terminal, and a first bus bar plate which has a terminal through-hole, through which the terminal passes, and in which the bus bar is arranged.

An electric heating device for a motor vehicle may include a heating volume and at least two spaced heating modules. A flow path of a fluid may lead through the heating volume. At least two spaced heating modules may be arranged in the heating volume. The at least two spaced heating modules may extend in a longitudinal direction. The at least two spaced heating modules may be spaced apart from one another in a transverse direction extending transversely to the longitudinal direction.

An electric heating device includes a housing having a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one receiving pocket protrudes into the heating chamber as a heating rib. A PTC heating device with at least one PTC element and conductor tracks for energizing the PTC element with different polarities, which are electrically conductively connected to the latter and which are electrically connected in the connection chamber, are received in the housing. The PTC element and at least one of the conductor tracks are received in a heater casing. The heater casing is pressed into the receiving pocket subject to plastic deformation of the heater casing and/or the receiving pocket.

An electric heating includes a housing having a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one receiving pocket, protruding into the heating chamber as a heating rib, preferably tapering towards its lower and closed end, protrudes. A PTC heating element, including at least one PTC element and conductor tracks for energizing the PTC element with different polarities, is accommodated in the housing with the conductor tracks being electrically conductively connected to the PTC heating element and being are electrically connected in the connection chamber. A pressure element is received in the housing and holds heat extraction surfaces of the PTC element abutted against oppositely disposed inner surfaces of the receiving pocket. To reduce mechanical stress on the PTC element or an insulating layer and, while at the same time retaining the PTC heating element in the receiving pocket, at least one web acts in a positive-fit and/or force-fit manner on the pressure element.

The invention relates to a frame (3) for an electric heating device (1), comprising at least one housing (7) intended to receive a heating element (5), said housing being defined by a plurality of longitudinal walls (23, 25) forming an insertion path for a heating element, and said insertion path being defined longitudinally by a back wall extending opposite an opening through which the heating element can be inserted into the housing. According to the invention, at least one of the longitudinal walls comprises a displacement reducing element (10) projecting from the wall. The displacement reducing element (10) comprises a ramp (11) that slopes gradually into the housing, towards the opposite longitudinal wall, said displacement reducing element (10) being arranged such that the downstream end (14, 15) thereof extends at a distance from the back wall (21).

An electric heating includes a housing having a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one receiving pocket, protruding into the heating chamber as a heating rib, preferably tapering towards its lower and closed end, protrudes. A PTC heating element, including at least one PTC element and conductor tracks for energizing the PTC element with different polarities, is accomodated in the housing with the coductor tracks being electrically conductively connected to the PTC heating element and being are electrically connected in the connection chamber. A pressure element is received in the housing and holds heat extraction surfaces of the PTC element abutted against oppositely disposed inner surfaces of the receiving pocket. To reduce mechanical stress on the PTC element or an insulating layer and, while at the same time retaining the PTC heating element in the receiving pocket, at least one web acts in a positive-fit and/or force-fit manner on the pressure element.

An electric heating assembly of an electric heating device includes a metal housing which forms a pocket in which at least one PTC element, contact sheets abutting surfaces of the PTC element and insulating layers which are arranged between the contact sheets and inner surfaces of the pocket. The contact sheets each have contact projections which project in the direction of one of the contact surfaces of the PTC element and are surrounded by an adhesive which connects the contact sheet to the PTC element. In order to improve heat extraction from the electrical contact of the PTC element, front end regions of the contact projections abutting against the PTC element are plastically deformed against the surface of the PTC element. Also disclosed is a method of making a heating device.

A heating module includes: an insulating case; at least one heat emitting element that is supported by the insulating case; at least one terminal plate that is arranged in the insulating case to contact the heat emitting element; and a ceramic insulator that is arranged on an outer surface of the terminal plate.