An electric heater for heating a liquid or frozen substance in a motor vehicle. In particular, an electric heater for heating electric car batteries or an HVAC system or for a system for reducing the environmental pollution of the motor vehicle. The electric heater includes a metal sheet adapted to generate heat when it is crossed by an electric current. two polymeric layers between which the metal sheet is arranged, and two metal layers, between which the two polymeric layers are arranged. The two metal layers are hermetically sealed to each other defining a casing, which prevents the substance to be heated from coming into contact with the two polymeric layers and with the metal sheet. A plurality of metal flaps extend transversely from an external face of at least one metal layer of the two metal layers.

According to one embodiment of the present invention, a heating rod comprises: a first thermal diffusion plate; a ceramic substrate arranged on the first thermal diffusion plate and having a heating element arranged therein; and a second thermal diffusion plate arranged on the ceramic substrate, wherein the first thermal diffusion plate and the second thermal diffusion plate are respectively stacked in a plurality of layers. Since the first thermal diffusion plate and the second thermal diffusion plate are stacked in the plurality of layers, a heating rod having a high thermal efficiency and being capable of fast heating and a vehicular heating device including the same can be obtained.

A positive temperature coefficient electric heater for a vehicle includes a support part, a control circuitry, and a first and a second radiating layers overlapping one another, each radiating layer having a plurality of heating rods extending from the support part and connected in parallel to the control circuitry. Each radiating layer has a first layer sector and a second layer sector controlled independently of one another. The radiating layers may be controlled independently of one another. In the first radiating layer, the second section of the heating rods is capable of generating greater thermal power than the first section of the heating rods and, in the second radiating layer, the first section of the heating rods is capable of generating greater thermal power than the second section of the heating rods.

An electrical connection interface (100) of a device for electrically heating a flow of air flowing within a ventilation, heating and/or air conditioning system of a motor vehicle comprises, in a panel (102), at least one notch that is dimensioned for receiving a connection terminal (126) mounted at the end of an electrode of a heating element of the electric heating device. The electrical connection interface comprises at least one device for limiting the shear (101) of the connection terminal which extends proud from the panel (102) adjacent to the notch.

The present disclosure concerns a connector system, e.g., for connecting an electrical component with a circuit board. The connector system includes an electrical heater-function-component having an electrical component-contact-surface for an electrical connection of the electrical heater-function-component. A circuit-board having an electrical board-contact surface is provided for an electrical connection of the circuit-board. A connector assembly connects the heater-function-component with the circuit-board. The connector assembly is arranged at the electrical component-contact-surface and the electrical board-contact-surface for connecting the heater-function-component with the circuit-board.

An electrical load resistance includes a housing having at least one U-shaped receiving pocket, in which at least one PTC heating element is accommodated. The PTC heating element includes at least one PTC element and at least one contact plate electrically conductively connected to the PTC element for energizing the PTC element. The contact plate has a terminal lug for plug contacting the PTC element, and the PTC heating element abuts at least on opposite main side surfaces of the receiving pocket in a heat-conducting manner and projects beyond the terminal lug of the receiving pocket. The housing of the electrical load resistance is closed, and thus has no inlet or outlet openings for a medium to be heated. Also provided is a device with an electrical load resistance for reducing the starting time of an internal combustion engine, a method for reducing the starting time of an internal combustion engine, and a use of a PTC heating device as an electrical load resistance for reducing the starting time of an internal combustion engine.

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).

The present invention relates to a PT heater and, more specifically, to a PTC heater which: mechanically fixes a heating element, a terminal, an insulating layer, and a heat-radiating unit, which constitute the PTC heater, by bending a fixing projection of a hook structure formed at a heat rod; and further has an auxiliary fixing protrusion capable of fixing the position of the heating element so as to increase the adhesiveness between the PTC element and the heat-radiating unit, thereby enabling performance to improve and facilitating assembly through the heat rod.

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 heat-generating element for an electric heating device includes a heating element casing which comprises a casing element formed from a ceramic material and a casing mating element formed from a ceramic material. The two casing elements bear against each other in a sealing manner and enclose, in a sealing manner between each other, a PTC element and conductor tracks. The conductor tracks bear, in an electrically conductive manner, against the PTC element and are assigned different polarities for energizing the PTC element. The heating element casing carries contact strips connected in an electrically conductive manner to the associated conductor tracks. At least one of the conductor tracks is formed by an electrically conductive element which is provided with through holes and which, in a height direction of the conductor track, comprises discrete points of support that bear against the PTC element and one of casing element and casing mating element. The present invention further relates to an electric heating device with at least one heater casing with a heat-generating element of the type described here that is arranged in a circulation chamber with a heating element casing joining at least one PTC element and contact strips energizing the PTC element as a structural unit. The heat generating element has the contact strips electrically connected to the PTC element projecting over itself. A partition wall separates the circulation chamber from a connection chamber of the heater casing. The contact strips of the PTC heating element protrude through the partition wall and are exposed and electrically connected.