The invention relates to a heating device (1) for an air-conditioning housing, said heating device (1) comprising a heating body (2) supplied with current for heating an air flow passing through said heating body (2), said heating body (2) comprising heating elements through which said current passes and which are arranged in electrically insulated tubes (4) of the heating elements, said heating elements being controlled via a distribution unit (3), said heating device (1) comprising means for earthing a plurality of metal elements distributed in the heating body (2) and the distribution unit (3). Said heating device (1) is characterised in that said earthing means consist of a single earthing circuit which passes through the heating body (2) and the distribution unit (3) and is formed by arranging said metal elements in series with direct contact between said metal elements.

The invention relates to an electrical heating device (1), in particular for a motor vehicle, the device (1) comprising: —a heating element (3) supplied with power at high voltage, —a control unit (5) supplied with power at low voltage and configured to receive a low-voltage electrical signal, the control unit (5) comprising at least one printed circuit (12) with at least one surface configured to receive electronic components; —at least one transmission cable (10) configured to transmit the low-voltage electric signal to the control unit (5), characterised in that the control unit (5) comprises at least one positioning element (20) configured to position the transmission cable (10) inside the control unit (5) and in that the positioning element (20) comprises at least one electrically insulating material.

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.

The present invention relates to an electric fluid-heating device (1), in particular for a motor vehicle, comprising a housing having a first fluid-circulation chamber (21), at least one electric heating element (4) for heating the fluid in said first chamber (21), an electronic board (81) for controlling a current circulating in said electric heating element or elements (4), at least one thermal sensor. Said device is characterised in that the thermal sensor or sensors are positioned on the electronic board (81) and thermally connected to the first chamber (21) via a heat sink (9).

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.

The present invention relates to an electric radiator (1) for a ventilation, heating and/or air conditioning system, comprising a heating body (2), an electrical connection interface (3) and at least one temperature measurement device (4) arranged across an air flow (6) that is able to pass through the heating body (2) and comprising at least one temperature sensor (41) and a body (42) for supporting the temperature sensor (41) extending in a transverse direction remote from the heating body (2), characterized in that the temperature measurement device (4) is electrically connected to the electrical connection interface (3) of the radiator (1) through a connection cable (5) that extends from a transverse end (420) of the body (42) for supporting the temperature sensor.

A heating device for heating an airflow in a motor vehicle is described, with a plurality of heating rods, which have connection plates made of aluminium, or an aluminium-based alloy, and a circuit board, which carries a control circuit, to which the heating rods are connected by way of busbars. In accordance with this disclosure, provision is made for the busbars to have a body made of aluminium, or an aluminium-based alloy, which establishes contact with the heating rods by means of a welded connection, and an end piece made of copper, or a copper-based alloy, which establishes contact with the circuit board by means of a plug-in connector.

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.

An electric heating device comprises a housing with a partition wall which separates a connection chamber from a heating chamber for dissipating heat and from which at least one PTC heating element with a heater casing protrudes in the direction toward the heating chamber. The at least one PTC element and conductor tracks are supported in the heater casing in an insulated manner. The heater casing is sealed against the partition wall by way of a seal arranged in a receptacle of the partition wall circumferentially surrounding the heater casing. A press ring is arranged in the receptacle and surrounds the heater casing circumferentially, securing the seal in the receptacle. A method of forming such an electric heating device also is disclosed.