FR2944395A1 - FRAME FOR AN ELECTRIC HEATING MODULE - Google Patents

Abstract

Armature (2) for an electric heating module (M) capable of cooperating with at least one heat sink (4) and at least one resistive element (20) of the electric heating module (M), said armature (2) comprising a frame (14) delimited by two longitudinal edges (16) and two lateral edges (18), the frame (14) being provided with at least one recess (19) for accommodating the resistive element (20), characterized in that that the armature (2) comprises at least one positioning means (12) of the heat sink (4) on the armature (2) so as to prohibit both a longitudinal movement of the heat sink (4) and a lateral movement of the heat sink (4) relative to the frame (2).

Description

Armature for an electric heating module

The invention relates to an armature capable of cooperating with a heat sink of an electric heating module. More generally, the invention is in the field of ventilation, heating and / or air conditioning systems for a motor vehicle.

To heat a passenger compartment of a motor vehicle, it is commonly used a heat exchanger installed in a ventilation system, heating and / or air conditioning. This heat exchanger is traversed by a fluid from the vehicle engine and is traversed by a flow of air towards the passenger compartment. When the engine is hot enough, the fluid flowing through the heat exchanger exchanges these calories with the airflow to heat the air in the cabin. However, during the first moments of operation of the engine and especially during winter periods, the calories taken by the fluid to the engine to heat the air flow are insufficient to provide acceptable thermal comfort to the passengers of the vehicle.

Thus, it is common to install in addition to the heat exchanger an electric heating device which ensures proper heating of the air flow from the first moments of operation of the engine.

These electric heating devices generally comprise heating modules comprising heating resistive elements, in the form of stones with a positive temperature coefficient for example, and heat sinks allowing the heat exchange between the calories produced by the heating resistive elements and a flow of air passing through the heating module. The resistive heating elements are held by a frame on which the heat sink is placed.

A recurring problem with this structure of heating modules is the difficulty of mounting the heat sinks on the frame holding the resistive heating elements. Indeed, the heating modules according to the prior art comprise a frame allowing only to correctly position the resistive heating elements relative to each other. In this way, during the manufacture of the heating module, it is necessary to maintain by means of adapted tools the heat sink on the frame so that they are aligned with the frame. Consequently, the manufacturing method is complex, since it is necessary to integrate in the various manufacturing steps of the heating module a step of maintaining in a given position the heat sink relative to the frame, and expensive because of this step.

The invention overcomes these problems by an armature for an electric heating module capable of cooperating with at least one heat sink and at least one resistive element of the electric heating module, said armature comprising a frame delimited by two longitudinal edges and two lateral edges , the frame being provided with at least one recess for housing the resistive element, characterized in that the armature comprises at least one means of positioning the heat sink on the armature so as to prohibit both a longitudinal movement of the heat sink and lateral movement of the heat sink relative to the frame.

According to other features of said armature: - said at least one positioning means comprises a first positioning means adapted to cooperate with a first end of the heat sink and a second positioning means adapted to cooperate with a second end of the heat sink. heat. - The first positioning means comprises a main wall and two secondary walls, the main wall prohibiting the longitudinal movement and the secondary walls prohibiting lateral movement. - The main wall comprises at least one rib capable of cooperating with the heat sink for its positioning on the frame. the second positioning means comprises an enclosure preventing longitudinal movement and lateral movement. the second positioning means comprises polarization means for assembling the heat sink. a plane of symmetry of the frame contains the frame. said at least one positioning means comprises a third positioning means. - The third positioning means is a housing adapted to receive one end of the heat sink. said at least one positioning means is located at one of the lateral edges of the armature. - The frame and said at least one positioning means form a unitary piece. - The frame is plastic. - The frame is flexible material. the recess comprises chamfers. the recess comprises at least two bosses.

The invention also relates to: - an electric heating module comprising at least one heat sink, wherein the electric heating module comprises a frame according to any one of the preceding characteristics. - An electric heating device for ventilation system, heating and / or air conditioning comprising at least one electric heating module. - A ventilation, heating and / or air conditioning system comprising at least one electric heating device. a method for manufacturing an electric heating module comprising the following successive steps: a) sizing of at least one resistive element on a first heat sink, b) placing the frame on the heat sink, c) positioning a second heat sink previously provided with glue on the frame, - d) curing the glue so that the electric heating module forms a unitary piece.

According to other characteristics of the process: step b) is divided into two sub-steps b1) and b2): b1) the third positioning means is placed on the end of the first heat sink having the gap. b2) a second means for positioning the armature is placed on the end of the first heat sink having the termination.

Other features, details and advantages of the invention will emerge more clearly on reading the description given below as an indication in relation to drawings in which: FIG. 1 is a perspective view of a heating module 2 is a perspective view of a heat sink according to the invention, FIG. 3 is a perspective view of a reinforcement according to the invention, FIG. perspective of a first means for positioning the armature according to the invention, - Figure 5 is a perspective view of a second positioning means of the armature according to the invention, - Figure 6 is another view. in perspective of the second means for positioning the armature according to the invention, FIG. 7 is a perspective view of part of the heat sink according to FIG. 2. FIG. 8 is a perspective view of another part of the heat sink according to the figure 2, and Figure 9 is a perspective view of an alternative embodiment of a positioning means.

FIG. 1 represents an electric heating module M according to the invention. Such an electric heating module M is located inside a not shown electric heating device, in which a plurality of heating modules M is housed. Such an electric heating device is installed inside a ventilation system, heating and / or air conditioning, not shown, of a motor vehicle to produce calories transported by a flow of air towards the passenger compartment in the first moments. of operation of the vehicle. The electric heating module M comprises an armature 2, at least one resistive element not shown and two heat sinks 4. This armature 2 is a support device for the resistive element (s) 2 and the heat sinks 4. The resistive element, located inside the armature 2, is glued or brazed to each heat sink 4. Each heat sink 4 comprises a fin 6, an electrode 8, a termination 10 and a plate not shown in this figure.

The resistive element is a stone with a positive temperature coefficient. This resistive element releases heat when an electric current passes through it. The stone with a positive temperature coefficient has the characteristic of self-regulating, that is to say that the higher the temperature of the stone, the more its electrical resistance increases, which avoids any risk of overheating of the stone and any risk fire.

The fin 6 dissipates the heat produced by the resistive element. Indeed, the fin 6 is in the form of a corrugated metal sheet which exchanges with a flow of air passing through the electric heating module the heat produced by the resistive element. This metal sheet is made of aluminum or aluminum alloy. The corrugation of the metal sheet is obtained by stamping or by passing the sheet between forming wheels and has a zigzag shape.

The electrode 8 is a metal strip in contact with the fin 6 and has at one end the termination 10 which provides the electrical connection between the resistive element and the electrical network of the vehicle. This electrode 8 is made of aluminum, aluminum alloy or brass. With the exception of its curved ends, the electrode 8 is flat. The planar portion of the electrode is in electrical contact with a plurality of vertices 40 of the fin 8, the vertices 40 being the curved portions of the corrugated metal sheet. The termination 10 is aluminum, aluminum alloy or brass.

The two heat sinks 4 are arranged on either side of the frame 2. In this way, the two heat sinkers 4 are each placed on a large face 2a of the frame 2. By large face 2a is meant the face extending along the length L of the frame 2 and having the largest width.

In FIG. 2, the heat sink 4 is illustrated in greater detail. As indicated previously, the fin 6 is in contact with the electrode 8 but also with a plate 22. The latter 22 ensures the electrical contact between the electrode 8 and the resistive element via the fin 6 and the thermal contact between the fin 6 and the resistive element. This plate 22 is made of aluminum, aluminum alloy or brass. It is generally flat except for its ends. The flat portion is in electrical and thermal contact with the tops of the fin 6.

In Figure 3 is shown the frame 2 according to the invention. This reinforcement 2 comprises a frame 14 formed by two longitudinal edges 16 and two lateral edges 18. By longitudinal edge is meant the edge of the frame 14 extending along the length L of the frame 14. The frame 14 thus has a rectangular shape. In order to house the resistive element 20, the frame 14 is provided with at least one recess 19. Each recess 19 is formed by a portion of each longitudinal edge 16 and by two spacers 21. The resistive element 20, of rectangular shape or a variant of square shape, is installed inside the frame formed by the recess 19. Such a frame 14, plastic such as polypropylene (PP) or polyamide (PA) or polybutylene terephthalate (PBT) ), protects the resistive elements 20 from external aggressions such as dust or water.

The armature 2 also comprises at least one positioning means 12. According to the illustrated embodiment, the armature 2 comprises four positioning means 12. Each positioning means 12 is located on a lateral edge 18 of the armature 2. The positioning means makes it possible to prohibit both a longitudinal movement of the heat sink 4 and a lateral movement of the heat sink 4 'with respect to the armature 2. Longitudinal movement is understood to mean a movement of the heat sink 4 according to a length of the frame 2, that is to say the length L of the frame 14. By lateral movement is meant a movement according to the width of the frame 2, that is to say the width I of the frame 14.

This positioning means 12 ensures in the first place a correct placement of the heat sink 4 relative to the frame 2, which is extremely advantageous during the manufacturing process. Indeed, as will be explained in more detail later, the positioning means 12 avoids any incorrect placement of the heat sink 4 relative to the armature 2, involving during the assembly phase faultless alignment of the dissipator of heat 4 vis-à-vis the frame and consequently the resistive element or elements 20. Thus, the bonding between the resistive element (s) 20 and the heat sink 4 is carried out accurately without the need for an adjustment of the heat sink 4 manual by an operator or automatic by a robot.

In addition, this positioning means 12 ensures a retention of the heat sink 4 on the armature 2. Indeed, during the manufacturing process of the electric heating module M, it is no longer necessary to use a formwork or tooling adapted to hold the heat sink 4 in position on the frame 14 during the bonding of the plate 22 of the heat sink 4 to the resistive elements 20. In this respect, a frame without positioning means can slide laterally and / or longitudinally on the heat sink during the manufacturing process of the electric heating module. As a result, the armature is not aligned with the heat sink and the electric heating module then has a manufacturing defect.

Such a frame 2 is a unitary piece which reduces the cost of manufacture. Indeed, the frame 2 comprising the frame 14 and at least one positioning means 12 is obtained by plastic molding. Thus, unitary means that the armature 2 is a single piece and monobloc. Because it is made of molded plastic, the armature 2 has a flexibility, which allows it to be easily handled during the manufacturing process of the electric heating module M. Flexibility means that the armature can be deformed under the action of a mechanical stress without breaking.

The armature 2 comprises two first positioning means 12a and two second positioning means 12b. The first positioning means 12a differ structurally from the second positioning means 12b as indicated below with the aid of FIGS. 4 to 6.

In Figure 4 are illustrated the first two positioning means 12a. Each first positioning means 12a comprises a main wall 24 and two secondary walls 26. The main wall 24 extends the lateral edge 18 and extends perpendicular to the longitudinal edges 16, that is to say the length L of the frame 14 This main wall 24 provides longitudinal retention of the heat sink 4. The two secondary walls 26 are adjacent to the main wall 24 and are perpendicular to the longitudinal edges 16. Adjacent means that the two secondary walls 26 are contiguous and in contact with the main wall 24. The two secondary walls 26 are also perpendicular to the main wall 24. These secondary walls 26 provide lateral retention of the heat sink 4. The main wall 24 thus forms a stop against a longitudinal movement of the dissipator 4. Similarly, the secondary walls 26 form a stop against a lateral movement of the heat sink 4 .

With respect to a plane P containing the frame 14, and being parallel to the two large faces 2a, two first positioning means 12a are arranged on either side of the frame 14. More specifically, each first positioning means 12a extends perpendicularly to the large face 2a of the frame 14, that is to say perpendicular to the plane P. According to the plane P, a first upper positioning means 12a1 comprises two ribs 28 located on the main wall 24. These ribs 28 are capable to cooperate with the heat sink 4 for precise positioning of the latter during the manufacture of the electric heating module M. In addition, these ribs 28, when they cooperate with the heat sink 4, provides a heat sink attachment 4 to the frame 2. This fixation is achieved by the insertion of the ribs 28 within an interval created between the plate 22 and the electrode 8 of the heat sink 4. Details sero this cooperation in the description of Figure 8

According to the plane P, a first lower positioning means 12a2 comprises a single rib 28. This rib 28 is a variant of the two ribs 288 of the first upper positioning means 12a1 and also ensures the attachment of the heat sink 4.

According to the plane P, the first two positioning means 12a are symmetrical with the exception of the ribs. In other words, along the plane P, the two main walls 24 are symmetrical with each other and the four secondary walls 26 are symmetrical to each other.

Figures 5 and 6 show the two second positioning means 12b. Each positioning means 12b is formed by an enclosure 30. The enclosure 30 consists of a hole 34 adapted to cooperate with the heat sink 4, said hole 34 being delimited by a peripheral wall 32. Comprising four sides and having a rectangular shape, the enclosure 30 is located on a side edge 18 of the frame 14. The peripheral wall 32 extends perpendicularly to the plane P of the frame 14. The hole 34 can accommodate a portion of the electrode 8 of the heat sink 4. When the electrode 8 is housed inside the hole 34, it is immobilized by the peripheral wall 32. Thus, no movement of the heat sink 4 is possible, whether it is a longitudinal movement or a lateral movement .

The enclosure 30 also includes a slot 36 adapted to cooperate with the termination 10 of the heat sink 4. This slot 36 receives the termination 10 during assembly of the heat sink on the frame 2. The termination 10 is then in protrusion of the positioning means to provide an electrical connection of the electric heating module M to the vehicle electrical network. The slot 36 extends perpendicular to the plane P. The slot 36 is formed so as to constitute a keying means for the assembly of the heat sink 4 on the frame 2. In fact, the slot 36 is not at the center of the peripheral wall 32. It is made in a position offset from a line A perpendicular to the plane P and passing in the middle of the distance separating the two longitudinal edges 16.

The enclosure 30 and its slot 36 has the advantage of reinforcing the terminal 10 with respect to mechanical stresses during its handling for connection to the vehicle electrical network or during the transport of the electric heating module M to a chain mounting. In this respect, the enclosure 30 acts as a support for the termination 10 and the slot 36 avoids any folding of the termination 10 or any separation of the termination 10 with the electrode 8.

According to the plane P, the two second positioning means 12b are symmetrical with the exception of the positioning of the slots 36. In other words, the two enclosures 30 are symmetrical with respect to one another according to the plane P. To ensure their role of keying means, the slots 36 are symmetrical with respect to the plane P. One of the slots 36 is located on the side of a longitudinal edge 16 and the other slot 36 is located on the side of the other longitudinal edge 16.

In Figure 7 is shown one end of the heat sink 4 and, in particular that ensuring the electrical connection of the electric heating module M to the vehicle electrical network. According to this figure, the fin 6 is sandwiched between the electrode 8 and the plate 22. The vertices 40 of the corrugated metal sheet forming the fin 6 is in direct contact with either the electrode 8 or the plate 22. The electrode 8, in the form of a metal strip 42, has at one end a tongue 44. Connected to the metal strip 42 by a bend 46, the tongue 44 is itself sandwiched by the terminal 10. The tongue 44 is disposed perpendicular to the metal strip 42 since the elbow 44 is ninety degrees. In the form of an L, the termination 10, made of metallic material, comprises a planar connection 48 for connection to the vehicle electrical network and a U-shaped arm 50 surrounding the tab 44 of the electrode 8. The mechanical connection between the tongue 44 and the arm 50 is the part of the heat sink 4 which is received inside the hole 34 of the second positioning means 12b. When the tongue 44 and the arm 50 are inside the hole 34, the arm 50 is in contact with the peripheral wall 32. Thus, the heat sink 4 is blocked for any movement. The connection 48 of the terminal 10 is then protruding from the positioning means 12b via the slot 36.

In FIG. 8 is represented the other end of heat sink 4.

The electrode 8 has a tongue 44 connected to the metal strip 42 by a bend 46. The plate 22 is in turn terminated by a bent terminal 52. The terminal 52 is disposed perpendicularly to the plate 22 so as to extend in a direction parallel to that of the tongue 44. More specifically, the terminal 52 and the tongue 4 are face to face and are included in the same plane P1. An interval 54 separates the tongue 44 from the terminal 52. This gap 54 cooperates with the rib or ribs 28 of the first positioning means 12a for positioning and fixing the heat sink 4 on the armature 2.

FIG. 9 illustrates an alternative embodiment of one of the positioning means 12. According to this variant, the armature 2 comprises two second positioning means 12b as previously described, a first positioning means 12a and a third positioning means 12c. . In other words, only one of the four positioning means 12 is different compared with the embodiment illustrated in FIGS. 1 to 8.

The positioning means 12c is a housing 56 adapted to house a portion of the heat sink 4. This housing 56 is formed by the main wall 24, the two secondary walls 26 and by an end wall 58. Perpendicular to the secondary walls 26 and the main wall 24, the end wall 58 is connected at its ends to its three walls (24, 26). Thus, the end wall 58 is parallel to the plane P. The shape of the housing 56 matches the outer contours of the heat sink 4, thus ensuring its function as positioning means and avoiding any longitudinal or lateral displacement of the heat sink 4.

The advantage of this particular structure of the positioning means 12c occurs during the manufacturing process of the heating module M.

According to another embodiment of the armature 2, the first positioning means 12a do not comprise ribs 28. Thus, the manufacture of the armature 2 is facilitated. Indeed, during the demolding of the frame 2, the absence of the ribs facilitates its extraction from the mold in which it is formed. According to another embodiment of the frame 2, the edges of the longitudinal edges 16 and spacers 21 defining the recesses 19 of the frame 2 to receive the resistive elements 20 are bevelled. The recesses 19 thus comprise chamfers at their contour to facilitate the introduction of the resistive elements 20 during the manufacturing process of the electric heating module M. These chamfers therefore ensure a smooth and smooth introduction of the resistive elements 20 to inside the recesses 19.

According to another embodiment of the armature 2, the recesses 19 comprise bosses ensuring a maintenance of the resistive elements 20 inside the recesses 19. This maintenance is achieved by the pressure exerted by the bosses on the resistive elements 20. to do this, each recess comprises at least two bosses facing each other, so that each boss exerts a pressure in the same direction and a boss exerts a pressure in a direction opposite to the pressure exerted by the other boss. The bosses are formed on the longitudinal edges 16 and / or on the spacers 21. More specifically, each boss is formed inside the recess 19 and extends in a direction perpendicular to its base.

Of course, all the variants are combinable with each other.

The electric heating module M comprising a frame 2 as described above is part of an electric heater for a ventilation system, heating and / or air conditioning. Such an electric heater provides the calories necessary to heat a flow of air entering the ventilation, heating and / or air conditioning system when the vehicle engine does not provide enough calories to the main heat exchanger installed inside the ventilation system, heating and / or air conditioning. This electric heating device is therefore an additional heat exchanger installed inside the ventilation system, heating and / or air conditioning and completes the heating action of an air flow of the main heat exchanger supplied with calories by a heat transfer fluid passing through the engine of the vehicle.

The method of manufacturing the electric heating module M will now be described.

The manufacturing method of the electric heating module comprises the following successive steps: a) sizing of at least one resistive element 20 on a first heat sink 4, b) placing of the frame 2 on the heat sink 4, - c) positioning of a second heat sink 4 previously provided with adhesive on the frame 2, - d) hardening of the adhesive so that the electric heating module M forms a unitary piece.

During step a), the sizing of the resistive element 20 on the heat sink 4 is carried out on the plate 22 of said dissipator.

During step b), the armature 2 is positioned on the first heat sink 4 so that the two ends of the first heat sink 4 are received inside the positioning means 12. The termination 10 is then protruding from the slot 36 and the resistive element 20 is housed inside the recess 19 of the frame 2. More specifically, the introduction of the tongue 44 and the arm 50 inside the the enclosure 30 permanently positions the armature 2 on the heat sink 4. In addition, at the end of this step b), the armature 2 is locked to the first heat sink 4 and no more movement of the first heat sink of heat 4, whether of longitudinal or lateral type, is possible vis-à-vis the frame 2.

In step c), the second heat sink 4 is positioned on the frame 2 so that the pre-bonded plate 22 comes into mechanical contact with the frame 2 and the resistive element 20.

This method is applicable to all the embodiments of the armature 2 and therefore to all the embodiments of the electric heating module M. When the armature 2 comprises a third positioning means 12c as described in FIG. 9 step b) is broken down into two substeps b1) and b2). During step b1), the third positioning means 12c is placed on the end of the first heat sink 4 having the gap 54. During step b2), a second positioning means 12b of the armature 2 is placed on the end of the first heat sink 4 having the termination 10. Thus, the step b2) can accommodate inside the second positioning means 12b, that is to say within the the enclosure 30, the tongue 44 and the arm 50 of the heat sink 4 and to position the termination 10 through the slot 36. As a result, the armature 2 is permanently positioned on the heat sink 4.

In step c), the main wall 24, the secondary walls 26 and the rib or ribs 28 allow the single and correct positioning of one end of the heat sink 4. The gap 54 then receives the rib or ribs 28 for fixing the heat sink 4 to the frame 2.

This method of manufacturing the electric heating module M has the following advantages.

Firstly, the number of parts constituting the electric heating module is extremely small: an armature, two heat sinks and one or more resistive elements. Then, since the number of pieces is reduced, the number of steps for manufacturing is also reduced. This implies a reduced cost and a saving of time.

In addition, all stages are facilitated from the point of view of mounting. Indeed, it is no longer necessary to properly position the longitudinal edges 16, the side edges 18, the spacers 21, former parts separated from each other, and the resistive elements 20 since the frame 2 is a single piece of molded or extruded plastic and that the resistive elements 20 fit perfectly inside the recesses 19 of the frame 2. The resistive elements 20 are thus held in place by the frame 14 without the aid of any additional tool during the process.

It is no longer necessary to control the dimensions and the molding of the armature 2. Even if the armature 2 was for example twisted, that is to say that the longitudinal edges 16 are not rectilinear but curved , setting up the armature 2 on a single heat sink 4 makes it possible to constrain the armature 2 to become flat. In other words, the positioning of the heat sink 4 and its attachment to the frame 2 makes the longitudinal edges 16 rectilinear.

Advantageously, after step c), a step c1) is carried out and consists in pressurizing the two heat sinks 4 to ensure the sizing of the plates 22 with the resistive element 20 before the hardening of the adhesive Step d). According to a variant of this process, the sizing is replaced by brazing.

Claims (1)

1.- Armature (2) for an electric heating module (M) capable of cooperating with at least one heat sink (4) and at least one resistive element (20) of the electric heating module (M), said armature ( 2) comprising a frame (14) delimited by two longitudinal edges (16) and two lateral edges (18), the frame (14) being provided with at least one recess (19) for accommodating the resistive element (20). ), characterized in that the armature (2) comprises at least one positioning means (12) of the heat sink (4) on the armature (2) so as to prohibit both a longitudinal movement of the heat sink (4) and a lateral movement of the heat sink (4) relative to the frame (2). 2. Armature (2) according to claim 1, wherein said at least one positioning means (12) comprises a first positioning means (12a) adapted to cooperate with a first end of the heat sink (4) and a second positioning means (12b) adapted to cooperate with a second end of the heat sink (4). 3. Armature (2) according to claim 2, wherein the first positioning means (12a) comprises a main wall (24) and two secondary walls (26), the main wall (24) prohibiting the longitudinal movement and the walls secondary (26) prohibiting lateral movement. 4. Armature (2) according to claim 3, wherein the main wall (24) comprises at least one rib (28) adapted to cooperate with the heat sink (4) for its positioning on the armature (2). . 5. Armature (2) according to any one of claims 2 to 4, wherein the second positioning means (12b) comprises an enclosure (30) prohibiting longitudinal movement and lateral movement. 6. Armature (2) according to any one of claims 2 to 5, wherein the second positioning means (12b) comprises a keying means (36) for assembling the heat sink (4). 7. Armature (2) according to any one of the preceding claims, wherein a plane of symmetry (P) of the armature contains the frame (14). 8. Armature (2) according to any one of claims 2 to 6, wherein said at least one positioning means (12) comprises a third positioning means (12c). 9. Armature (2) according to claim 8, wherein the third positioning means (12c) is a housing (56) adapted to receive one end of the heat sink (4). 20 10. Armature (2) according to any one of the preceding claims, wherein said at least one positioning means (12) is located at one of the lateral edges (18) of the frame (2). 11. An armature (2) according to any one of the preceding claims, wherein the frame (14) and said at least one locating means (12) form a unitary piece. 15 12. Armature (2) according to any one of the preceding claims, wherein the armature (2) is plastic. 13. Armature (2) according to claim 12, wherein the armature (2) is flexible material. 14. Armature (2) according to any one of the preceding claims, wherein the recess (19) comprises chamfers. 15. Armature (2) according to any one of the preceding claims, wherein the recess (19) comprises at. minus two bosses. 16.- Electric heating module (M) comprising at least one heat sink (4) and at least one electrode (8), wherein the electric heating module (M) comprises a frame (2) according to any one of the claims preceding. 17.- Electrical heating device for ventilation system, heating and / or air conditioning comprising at least one electric heating module (M) according to claim 16. 18.- ventilation system, heating and / or air conditioning comprising at least one electric heating device according to claim 17. 19. A method for manufacturing an electric heating module (M) according to claim 16 comprising the following successive steps: a) sizing of at least one resistive element (20) on a first heat sink (4), b ) placing the armature (2) on the heat sink (4), c) positioning a second heat sink (4) previously provided with glue on the armature (2), d) hardening of the glue so that the electric heating module (M) forms a unitary piece. 20. A method according to claim 19, wherein step b) is divided into two sub-steps b1) and b2) b1) the third positioning means (12c) is placed on the end of the first heat sink ( 4) having the gap (54). b2) a second positioning means (12b) of the armature (2) is placed on the end of the first heat sink (4) having the termination (10).