Heating assembly and heating device for a vehicle

Abstract

The invention relates to a heating assembly (100) for a vehicle, in particular for an electric or hybrid vehicle, comprising: a heat exchanger (1) having a support body (10) for an electric heating element (2a, 2b, 2c), the support body (10) having a heating side (12) and an opposite heat transfer side (11); at least one electrical heating element (2a, 2b, 2c) attached to the heating side (12) of the support body (10); a control unit (3) for the at least one heating element (2a, 2b, 2c); and at least one electrical connection line (4a, 4b, 4c) for supplying power to the heating element (2a, 2b, 2c); the support body (10) has at least one passage opening (13a, 13b, 13c) from the heat transfer side (11) to the heating side (12), through which the connecting line (4a, 4b, 4c) extends. This spatially separates the control unit from the heating element. This in turn results in a high degree of flexibility of the design of the control unit housing.

Description

Field of the Invention

[0001] The present invention relates to a heating assembly and a heating device for a vehicle, in particular an electric or hybrid vehicle, preferably a high-voltage heating device. Background Art

[0002] In vehicles, heating devices are used to heat the interior space or components. For applications in electric or hybrid vehicles that generate less waste heat than conventional vehicles with internal combustion engines, electric heating devices are subject to special requirements. Air or water is mainly used as the heat transfer medium.

[0003] DE 102 16 010A1 discloses an electric heating device having a control device for controlling the heating elements of a heating unit. The electrical contact between the contact portions on the control device and the contact portions of the heating unit is established by means of a firm connection, in particular by means of screws or rivets, to prevent any poor contact in response to vibrations.

[0004] WO 2013 / 171079 A1 describes an electric vehicle heater, in particular for a vehicle having a hybrid drive or an electric drive, having a support body that includes a ceramic substrate and is thermally coupled to a heat exchanger. The support body is divided into two adjacent heating zones, each heating zone having at least one heating element. An actuation unit is provided for independently actuating the heating elements, and the actuation unit is arranged in a region of the support body outside the heating zones. The two heating zones and an actuation zone are arranged in sequence in the longitudinal extension direction of the ceramic substrate.

[0005] DE 10 2019 214 566 A1 relates to an electric heating assembly having heating elements arranged at least on two opposite sides of a coolant housing and a bent three-part circuit board. The coolant housing is arranged between two opposite edge sub-boards, and the power terminals of the heating elements and the terminals of the edge sub-boards are in electrical contact. A logic circuit is arranged on a central sub-board.

[0006] WO 2019 / 169501 A1 relates to a heat exchanger having an electric heating element, the electric heating element including an electrically insulating dielectric base layer and an electric heating resistance layer located on the base layer. A conductive layer is positioned in direct contact with the heating resistance layer and is located below the longitudinal edges of the heating resistance layer, between the heating resistance layer and the dielectric base layer. The conductive layer forms a connection to a current source.

[0007] For vehicles with a high-voltage on-board power supply system, high-voltage heating devices for electrically heating a water circuit by means of a heat transfer device (heat exchanger) are known. Heating elements based on layer heating technology efficiently convert direct or alternating current into heat. In existing heating devices, the heating elements and their electrical contacts are arranged on the same side of the heat exchanger. In many cases, these heating devices include a control device, the housing of which surrounds both sides of the heat exchanger from the outside. A disadvantage is the limited flexibility of the housing design. Summary of the Invention

[0008] Starting from this prior art, the object of the present invention is to provide a heating device for a vehicle, in particular for an electric or hybrid vehicle, which enables a structurally simple contact of the heating elements and the greatest possible flexibility in the housing design. In addition, this means that the manufacturing should be as cost-effective as possible.

[0009] This object is achieved by a heating assembly according to claim 1 and a heating device according to claim 14.

[0010] In particular, the above object is achieved by a heating assembly for a vehicle, in particular for an electric or hybrid vehicle, the heating assembly comprising:

[0011] - a heat exchanger having a support for an electrical heating element, in particular a planar one, wherein the support, in particular a plate-shaped one, has a heating side and a heat transfer side arranged opposite the heating side;

[0012] - at least one electrical heating element, preferably a layer heating element, which is assembled to the heating side of the support;

[0013] - a control unit for the at least one heating element; and

[0014] - at least one electrical connection line which is connected to the control unit and is used to supply power to the heating element;

[0015] wherein the support includes at least one through-hole extending from the heat transfer side to the heating side, and the connection line extends through the at least one through-hole.

[0016] With the heating assembly according to the invention, the electrical connection structure of the heating element and the control unit can be arranged on the heat transfer side and thus on the (other) side opposite to the heating side with the heating element. Compared with the prior art, the electrical connection structure of the heating element is transferred to a side away from the heating element by means of the control unit. Thus, a spatial separation between the control unit and the heating element is achieved. Thus, a high degree of flexibility is provided for the construction of the housing of the control unit. Thus, the contact parts of the control unit, in particular the contact area of the housing of the control unit (control unit housing) and the contact parts on the control board, are more easily accessible. Thus, according to the effective space requirements (determined, for example, by the space occupied by other vehicle components), the control unit housing and the housing of the heat exchanger (heat exchanger housing) can be constructed in a more unrestricted and preferably more cost-effective manner. In particular, the control unit housing and / or the heat exchanger housing can be designed as independent closed units in the sense of a modular structure. The interface structure between the control unit and the heat exchanger is significantly simplified. Hereinafter, the control unit housing is also described as the first module housing, and the heat exchanger housing in combination with the housing cover for covering the heating element and the associated power circuit components is also described as the second module housing.

[0017] In particular, the support is a component of the heat exchanger housing. The through-hole can (only) penetrate the support or (also) can penetrate other elements of the heat exchanger, in particular through the (entire) heat exchanger housing from one side to the other. The through-hole is preferably completely laterally closed (circumferentially closed), but can also be partially laterally open. Thus, the through-hole can be understood as a cutout in the edge region of the support. In use, the heat transfer device (heat exchanger) accommodates the flow-through of a heat transfer medium, in particular, which is preferably a fluid (coolant), such as water.

[0018] (Plate-shaped) The support in particular extends along the main extension plane (in a planar arrangement), is preferably configured as a (flat) support plate, and preferably presents a rectangular basic shape. On the heating side, the support in particular includes a flat heating surface, especially in the heat transfer section, but preferably also in the connection section. On the heat transfer side, especially in the heat transfer section, the support does not necessarily have to be flat, but can be molded, for example, to form one or more flow channels or sections thereof. The support (support plate) is preferably made of aluminum.

[0019] One or more heating elements can be provided, in particular, these heating elements are arranged adjacent to each other to form a planar heating core (heating surface) mutually. The heating element preferably includes at least one heating conductor. In particular, the heating element is firmly joined to the support. The (thin) heating element is preferably configured as a layer heating element, for example having a layer thickness of less than 1 mm, and is preferably (directly) joined to the heating surface of the support, in particular by means of an adhesive. In order to join the heating element (directly) to the support, a layer of an electrically insulating adhesive in particular can be locally applied to the support. The heating element can preferably include a support layer which is electrically insulating in particular and further preferably made of a ceramic material, and the heating conductor is assembled onto the support layer.

[0020] The support layer can be a ceramic substrate, for example made of Al2O3. The heating conductor can be applied to the support layer (ceramic substrate) by means of a screen printing method. The heating conductor can be implemented, for example, as a metal coating formed of a resistive alloy, which constitutes the corresponding heating resistor. Options for consideration include in particular iron-nickel alloys or nickel-chromium alloys. The interruption of the insulation enables the structuring of the elongated printed conductor, which originates from a layer applied over a large area and then fired in a furnace, and can be carried out, for example, already during the application by means of a screen printing process. This embodiment of the heating element is preferred in view of various aspects of the present invention.

[0021] The support layer is preferably joined to the support, further preferably by means of an adhesive. In particular, the support includes connection regions for (directly or indirectly) fastening the heating element, and preferably, an adhesive layer and / or the support layer of the heating element, preferably made of a ceramic material, are arranged in the connection regions. The connection regions preferably (substantially) correspond to the heat transfer sections of the support. The planar heating element has a large contact surface area for heat transfer and is capable of converting electric current into heat in an efficient manner.

[0022] The heating element or the heating conductor layer can be implemented in various ways, and the present invention is not limited to its specific embodiments. The heating element can also be composed of a thermal spray coating, for example. For production purposes, atmospheric plasma spraying can be used, for example, as a coating method. Starting from a flat substrate (support), the resulting layer structure is first an optional bonding surface, then a ceramic insulator, the actual heating conductor layer, and an optional overcoat or seal. The heating conductor layer can be structured by means of laser cutting or a mask. The material of the heating conductor can be a material having linear or PTC resistance characteristics.

[0023] Polymer-based heating elements having PTC characteristics can also be considered. These heating elements can be heating elements formed of plastic films. The heating elements generally consist of an extruded or laminated polymer matrix, in which heating conductors and positive and negative electrodes are embedded.

[0024] In addition, the heating element can also be a ceramic heating element (PTC thermistor) with PTC characteristics.

[0025] The heat exchanger itself can be formed, for example, of steel or aluminum, preferably in the form of a plate-type aluminum heat exchanger.

[0026] Power supply can be understood as the feeding-in of an electric current, i.e., the feeding-in of an electric current associated with the application of a voltage (voltage potential), in particular by means of a connectable current source.

[0027] In one embodiment of the present invention, the control unit preferably configured to control a plurality of heating elements includes a control unit housing, which is particularly used to accommodate a control board forming a control device and is arranged on the heat transfer side of the support body. The control unit housing can be completely or at least substantially arranged on the heat transfer side of the support body. The connection section of the control unit housing has connection lines (printed conductors) accommodated therein and is particularly configured as a plastic plug-in part, which can extend into a through hole or extend through the through hole to the heating side. A plurality of connection lines can be assigned to each heating element. The control unit can be configured to control, in particular to supply power to a plurality of (all) heating elements, and is thus understood as a superior controller of the heating assembly or heating device. By arranging the control unit housing on the heat transfer side, it can be configured independently of the arrangement structure of the heating elements and optionally independently of the arrangement structure of any power circuit components on the heating side. The electrical contact part for the heating element is easily accessible on the heat transfer side. The length of the seal between the control unit housing and the heat exchanger housing can be shortened.

[0028] In another embodiment, the control unit and the inlet connection and / or outlet connection for the heat transfer medium are arranged on the same side of the support body, preferably on the heat transfer side. Since the heat exchanger is configured such that the inlet connection and / or outlet connection are arranged on the heat transfer side away from the heating elements, as much as possible of the surface area of the support body can be used for heat transfer, especially without space limitations for the arrangement of the heating elements. Therefore, the structural space required for the heating assembly is reduced while maintaining the same heating capacity.

[0029] In another embodiment, the support body includes a heat transfer section in the region of at least one heating element and a connection section outside the heat transfer section, wherein at least one through hole is formed in the connection section. The connection section is preferably arranged at the edge of the support body, preferably along the shorter side of at least one (rectangular) heating element. In particular, in the connection section, the control unit housing is connected to or fastened to the support body. The heat transfer section preferably extends in the central (rectangular) region of the support body.

[0030] In another embodiment, on the heat transfer side of the support body, the heat exchanger includes at least one flow pipe to accommodate the flow-through of the heat transfer medium. The flow pipe can be formed by the inner surface of the heat exchanger housing or by a separate pipe structure arranged in the void (coolant volume) of the heat exchanger housing.

[0031] In another embodiment, the heat exchanger includes a top cover, which combines with the support body to form a void for accommodating the flow-through of the heat transfer medium, and in particular, forms at least one flow pipe. One or more flow pipes can be formed by the (upper) surface of the support body and the (matching) opposite (lower) surface of the heat exchanger top cover. In particular, in the heat transfer area of the support body, the top cover forms a cup-shaped recess and in particular forms an inflow connection and / or an outflow connection for the heat transfer medium. In particular, the top cover and the support body each form a plate-shaped connection section, and these plate-shaped connection sections at least overlap in the area of the through-hole, in particular (consistently) one is arranged on top of the other, and preferably (directly) adjacent to each other. A seal can be provided between the support body and the top cover.

[0032] In another embodiment, the through-hole penetrates the top cover and the support body in the area of the connection section of the support body. Therefore, the support body and the top cover respectively include through-holes that coincide with each other.

[0033] In another embodiment, at least one power switching unit is assembled on the heating side of the support body for regulating the (electrical and / or thermal) power of the heating element, wherein the power switching unit is preferably arranged between the through-hole and the heating element and is in particular electrically connected by means of a connecting wire. The power switching unit is preferably arranged on a power circuit board and is in particular designed to regulate the current flux through the heating element and / or to perform a reduction or interruption of the current flux starting from a specific threshold. The power switching unit preferably includes a temperature sensor, which is designed to monitor the heating temperature of the heating element, or the temperature of the support body heated by the heating element, or the temperature of the heat transfer medium itself. In addition, the power switching unit can include a signal processing unit, which is in particular connected to the temperature sensor. Therefore, there is no need to forward the signal to a (superior) control unit.

[0034] In another embodiment, the power switching unit is connected to a temperature sensor, which is arranged on the heating side of the support body, preferably on the circuit board of the power switching unit. In particular, the temperature sensor is designed to monitor the temperature of the heating element, or the temperature of the support body heated by the heating element, or the temperature of the heat transfer medium itself. Therefore, the thermal power output of the heating element can be controlled and any overheating can be prevented.

[0035] In another embodiment, a plurality of heating elements are assembled on the heating side of the support, and / or the support includes a plurality of through-holes, wherein each heating element is preferably assigned one through-hole. Thus, the control device can be connected to each heating element separately. In particular, the heating elements are arranged adjacent to one another and are arranged on the support in a (substantially) directly adjacent manner. With the aid of the control unit, the heating elements can be supplied with current differently or actuated differently, wherein, in particular, the power output of the heating elements can be adjusted separately.

[0036] In another embodiment, each through-hole is assigned a power switching unit, which is connected accordingly by means of connecting lines, wherein, in particular, each heating element is assigned one power switching unit. Preferably, each heating element is assigned (exactly) one through-hole. The power switching units can in turn be electrically connected to the heating elements (by means of printed conductors), wherein preferably each power switching unit is connected to (exactly) one heating element.

[0037] In another embodiment, the main extension plane of the control board of the control unit is arranged at an angle of at least 45°, preferably (substantially) 90°, with respect to the main extension plane of the power switching unit and / or the heating element. In particular, the main extension plane of the control board and / or the power switching unit is defined by the extension plane of the circuit board. The control board is preferably oriented perpendicular to the main extension plane of the heating element (i.e., parallel to the heating surface). Thus, the structural area of the heating assembly can be reduced.

[0038] In another embodiment, the connecting lines are implemented as printed conductors partially surrounded by a plastic insert, in particular in the form of a bent stamping grid (Stanzgitter), wherein the outer contour of the plastic insert is adapted to the inner contour of the through-hole. The connecting lines in the form of printed conductors can preferably be embedded or overmolded in the plastic insert of the control unit housing. The plastic insert is preferably installed in a suitably shaped connection area of the control unit housing and can extend into the through-hole in the installed state.

[0039] In another embodiment, the connecting line includes preferably double-folded corners, wherein, in particular, the line terminal sections of the connecting line extend parallel to the main extension plane of the preferably plate-shaped support, and in particular, the intermediate section of the line extends perpendicular to the main extension plane of the support. The cross-section of the connecting line can thus be described as Z-shaped. The intermediate section of the line preferably extends into or through a through-hole. In particular, the line terminal section of the connecting line facing the control unit is routed in a direction (substantially) perpendicular to the control board and is preferably (directly) connected to the control board, for example, by soldering and / or press-fitting into a through-hole of the control board. In particular, the line terminal section of the connecting line facing the power switching unit or the heating element is routed in a direction (substantially) parallel to the main plane of its extension and is preferably (directly) connected to the circuit board of the power switching unit (e.g., by soldering). With this shaping design of the connecting line, the contact part of the heating element can be moved to the heat transfer side in a structurally simple manner by means of the control unit.

[0040] According to an exemplary embodiment, it is further provided that in the control unit housing (hereinafter also referred to as the first module housing to distinguish it from the second module housing formed by the combination of the heat exchanger on the heat transfer side and the housing cover for the heating side), at least one hole is configured for the feedthrough of the electrical connection between the control device or the control board of the first module housing of the control unit and the power switching unit for switching the heating element in the second module housing. In this case, a stamping grid can be correspondingly arranged in the at least one hole, which has connecting lines embedded in a common plastic insert, wherein the connecting lines are connected to the corresponding contact parts on the control board forming the control device.

[0041] The stamping grid enables a firm electrical connection to the power switching elements arranged in the power switching unit and / or to the heating element, and enables a space-saving conversion of the side of the heat exchanger, because the assembly of the first module housing to the second module housing is preferably performed in a direction substantially perpendicular to the plane of the heat exchanger, so that in the state of being installed in the vehicle, the installation of the nozzle connectors (fluid inlet, fluid outlet) and the connector unit (high voltage, low voltage) can be performed from the same side. However, this in turn requires the heating element to be arranged on the opposite side of the planar heat exchanger. Therefore, the through-holes in the support of the heat exchanger enable direct access to the second module housing from the side where the heating element is located.

[0042] Advantageously, the stamping grid can extend through the through-hole formed in the support and through the hole formed in the first module housing and aligned with the through-hole into the internal space of the first module housing, where the stamping grid is fixed to the control board forming the control device of the control unit by means of at least one positioning device, in particular by a positioning pin.

[0043] To fix two module housings to each other, fastening means, in particular one or more screws, can be provided to fix the support of the heat exchanger or the heat exchanger module formed by the heat exchanger and the heating element, as well as the associated one or more power switching units and the associated housing cover, to the first module housing, wherein the support includes through-holes that are aligned with at least one hole in the first module housing such that the stamping grid extends through the through-holes of the support and contact portions are provided for the connection lines on opposite sides of the stamping grid.

[0044] Between the mutually facing surfaces of the support of the first module housing and the second module housing (of the heat exchanger), a seal can be arranged, which seals at least one through-hole or at least one hole (and, in the case of a plurality of through-holes and associated holes, seals them together), and thus protects the interior space of the first module housing and the interior space of the second module housing that houses the power switching units and the heating elements from moisture intrusion.

[0045] In particular, the above object is also achieved by a heating device for a vehicle, in particular for an electric or hybrid vehicle, preferably a high-voltage heating device, which heating device includes at least one of the above-described heating assemblies according to the invention. The operating mode and advantages of this heating device are similar to the structural and functional features described in connection with the heating assembly. This type of heating device is particularly suitable for heating the interior space of a vehicle and / or vehicle components.

[0046] The heating element of the heating device or the heating assembly preferably has a (total) heating capacity in the range of 1 to 100 kW, preferably between 2 and 20 kW, and can have an area of several hundred cm 2 For example, 200 cm 2 . The heating element is preferably operated by direct current in the high-voltage range, i.e., in the range of approximately 100 to 1000 volts (V). In particular, this type of high voltage can be provided in an electric or hybrid vehicle, for example, in a passenger car, with a value up to 500 V or higher, for example, up to 800 V or higher, or in a multi-purpose vehicle such as a bus or an HGV, with a value up to 100 V or higher. Therefore, a heating device having a heating assembly according to the invention can be described as a high-voltage heating device.

[0047] It is thus observed that an electric heating assembly or an electric heating device according to aspects and embodiments described herein can in particular be a fluid heating system. The term "fluid heating system" means that the heat transfer medium flowing through the heat exchanger of the heating assembly is a fluid. In particular, the medium can be the fluid coolant of a vehicle, which transfers heat in the vehicle and can discharge heat at different locations. Additionally or alternatively, the fluid heating system can also be part of, for example, a vehicle heat pump, such that the heat transfer medium can be, for example, or include the coolant of the heat pump. It may be the case that the coolant exists only in a completely liquid form under specific conditions and only temporarily, or may never exist in a liquid form, while in other cases, the refrigerant is partially or completely gaseous. Nevertheless, this can also be understood as a fluid heating system.

[0048] Other embodiments of the invention result from the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Exemplary embodiments of the invention will be described in more detail below with reference to the drawings. In the drawings:

[0050] Figure 1 A schematic view of an embodiment of a heating assembly according to the invention according to a first embodiment is shown in perspective;

[0051] Figure 2 A schematic view of an embodiment according to Figure 1 is shown in a top view of the heating side of the heat exchanger;

[0052] Figure 3a A schematic view of an embodiment of the heat exchanger of a heating assembly according to the invention is shown in perspective on the heating side;

[0053] Figure 3b A schematic view of an embodiment of the heat exchanger of a heating assembly according to the invention is shown in perspective on the heat transfer side;

[0054] Figure 4 A schematic view according to Figure 1 is shown in perspective, with the control board of the control unit not shown;

[0055] Figure 5 A schematic view according to Figure 1 is shown in perspective, with the control board of the control unit shown;

[0056] Figure 6 A schematic view according to Figure 1 is shown in cross-section;

[0057] Figure 7 Shown according to Figure 6Enlarged schematic view of a cross-sectional view;

[0058] Figure 8 Perspective view showing a high-voltage electric heating device according to a second embodiment;

[0059] Figure 9 Showing according to Figure 8 Top view of a component of a heating element on a carrier plate of a heat exchanger of a heating device;

[0060] Figure 10 Showing according to Figure 8 Perspective view of a control module of a heating device, showing a view of an outer second layer of an electrically insulating plastic material;

[0061] Figure 11 Showing according to Figure 10 Schematic view, but with the high-voltage connector unit removed;

[0062] Figure 12 Showing according to Figure 11 Schematic view, but showing a view of an inner first layer of a conductive plastic material, with the second layer removed;

[0063] Figure 13 Showing according to Figure 12 Schematic view, but with the first and second layers removed (only the base part and the cover are still visible);

[0064] Figure 14 Is a separate schematic view showing the positioning of a stamping grid, fixing screws, metal sheet inserts, and seals;

[0065] Figure 15 Perspective view of the internal space of a first module housing according to an exemplary embodiment;

[0066] Figure 16 Perspective view of the first module housing shown from the rear, with the second layer as the outer surface;

[0067] Figure 17 Showing according to Figure 16 Schematic view, but with the second layer removed, i.e., showing a view of the inner first layer;

[0068] Figure 18 Showing according to Figure 15 Schematic view in which all electronic components, including the control device, are in a mounted state, but the cover is removed;

[0069] Figure 19 Showing according to Figure 18 Schematic view, but with the control device removed (the circuit board and the molded compound or filling material are removed);

[0070] Figure 20 A perspective view of the first module housing is shown from below, without the stamping grid;

[0071] Figure 21 A perspective view of one of the stamping grids is shown;

[0072] Figure 22 Shown according to Figure 21 Another perspective view of the stamping grid. Detailed Description of the Invention

[0073] In the following description of the preferred exemplary embodiments, it should be noted that various aspects of the present disclosure are not limited to the details of the layout and arrangement of the components shown in the following description and the drawings. In fact, the exemplary embodiments can be implemented or executed in various ways. Additionally, it should be noted that the forms of expression and terms adopted here are only for the purpose of actual description and should not be considered restrictive by those skilled in the art.

[0074] In the following description of the present invention, the same or similar reference numerals are used for the same and functionally identical elements, so that in some cases, for the sake of brevity and clarity of the description, the repeated detailed description of the said elements is omitted.

[0075] Figure 1 、 Figure 2 and Figures 4 to 7 Show a first embodiment of a heating assembly 100 according to the present invention in different views. Figure 3a and Figure 3b Show a heat exchanger 1 according to another embodiment of the present invention.

[0076] The heating assembly 100 according to the present invention or the corresponding heating device is preferably configured as a high-voltage heating device and is particularly suitable for heating the vehicle interior space or vehicle components in an electric or hybrid vehicle. The heating assembly 100 includes a heat exchanger 1, a plurality of electric heating elements 2a, 2b, 2c, a control unit 3, and a plurality of electric connection lines 4a, 4b, 4c, and the plurality of electric connection lines 4a, 4b, 4c are connected to the control unit 3 and are used for making electrical contact with the heating elements 2a, 2b, 2c.

[0077] The heat exchanger 1 includes a support 10 for the heating elements 2a, 2b, 2c, and the support 10 is made of aluminum and is of a plate-type design. The support 10 has a heating side 12 and an opposite heat transfer side 11, and the heating side 12 has the heating elements 2a, 2b, 2c. The support 10 includes a plurality of through holes 13a, 13b, 13c from the heat transfer side to the heating side 12, and the connection lines 4a, 4b, 4c extend through these through holes (see Figure 6 and Figure 7)。In this example, three heating elements 2a, 2b, 2c having a rectangular basic shape are assembled to the surface of the support 10 in the heat transfer section 14, in particular by bonding, wherein each heating element 2a, 2b, 2c is configured as a layer heating element and includes at least one helically configured electric heating conductor 20 located in the main extension plane of the heating elements 2a, 2b, 2c. The heating elements 2a, 2b, 2c may include a ceramic substrate adhesively bonded to the surface of the support 10. Through holes 13a, 13b or 13c and a corresponding set of connecting lines 4a, 4b or 4c are respectively assigned to each heating element 2a, 2b and 2c.

[0078] The through holes 13a, 13b, 13c with the connecting lines 4a, 4b, 4c are arranged in the connection section 15 of the support 10. In the connection section 15, outside the heat transfer section 14, in the edge region of the support 10, the control unit housing 30 (which has a control board 31) of the superior control unit 3 is arranged on the heat transfer side 11 and is connected to the support 10 by means of screws 51 fitted in threaded openings 50, thus being connected to the heat exchanger 1 (see Figure 3a and Figure 3b ).

[0079] Between the connecting lines 4a, 4b, 4c and the heating elements 2a, 2b, 2c, power switching units 5a, 5b, 5c are respectively arranged on the support 10, and the power switching units 5a, 5b, 5c respectively include temperature sensors 6a, 6b, 6c for monitoring the heating temperature of the respective assigned heating elements 2a, 2b, 2c and for regulating the thermal power and / or electric power of the respective heating elements 2a, 2b, 2c. The temperature sensors 6a, 6b, 6c are respectively arranged on the circuit boards of the power switching units 5a, 5b, 5c.

[0080] In addition to the support body 10, the heat exchanger 1 further includes a top cover 17. The top cover 17 and the support body 10 are combined to form a heat exchanger housing. There is a void in the heat exchanger housing, and one or more flow pipes 16 for accommodating the flow of the heat transfer medium are arranged in the void. The top cover 17 forms an inlet connection 18 and an outlet connection 19 for the heat transfer medium. According to an embodiment, the inlet connection 18 and the outlet connection 19 can also be interchanged. Since the inlet connection 18 and the outlet connection 19 are arranged on the same side of the support body 10 or the heat exchanger 1, that is, on the heat transfer side 11, together with the control unit 3 having the control unit housing 30, the control unit housing 30 can be configured highly flexibly. In particular, it can be independent of the spatial arrangement and scope of the heating elements 2a, 2b, 2c, and optionally taking into account the available structural space in the vehicle defined by adjacent vehicle components. In addition, the control unit housing 30 and the housing of the heat exchanger 1 can be designed as independent closed units with a modular structure form having simplified interfaces. Therefore, cost savings can be achieved.

[0081] In the connection section 15 of the support body 10, in the current case, the support body 10 is configured as a rectangular support plate. The top cover 17 and the support body 10 that are partially overlapped are penetrated by through holes 13a, 13b, and 13c. The through holes 13a, 13b, and 13c are each completely laterally closed, that is, having a complete periphery (see Figure 3a and Figure 3b ). In the current case, the connection area of the control unit housing 30 is implemented with three plastic inserts 32, which are combined with pre-assembled connection lines 4a, 4b, 4c, such as inserted or overmolded ones, during assembly. These plastic inserts are inserted into the through holes 13a, 13b, 13c from the heat transfer side 11.

[0082] In Figure 6 and Figure 7 , a sectional view shows the connection structure between the control unit 3 and the heating elements 2a, 2b, 2c or the power switching units 5a, 5b, 5c. In Figure 6 and Figure 7 , a sectional view shows the corresponding central elements 2b, 4b, 5b, 13b. Between the surface of the top cover 17 and the connection area of the control unit housing 30, a peripheral seal 33 is arranged in a peripheral groove. Due to the arrangement of the control unit 3 on the heat transfer side 11 according to the present invention, the seal can be configured in a simple manner with a relatively short length. The main extension plane of the control board 31 is perpendicular to the main extension planes of the support body 10, the power switching units 5a, 5b, 5c, and the heating elements 2a, 2b, 2c.

[0083] The connecting lines 4a, 4b, 4c are implemented as printed conductors, respectively, wherein a plurality of connecting lines are each formed as a metal stamping grid having two folding angles and presenting a Z-shape with two bends in cross-section. The line terminal sections 41, 43 of the connecting lines 4a, 4b, 4c are respectively oriented parallel to the main extension plane of the support 10, while the middle section 42 of the line extends perpendicular to the main extension plane of the support 10, i.e., extends parallel to the main extension plane of the control unit housing 30 into the through-holes 13a, 13b, 13c. The line terminal section 41 facing the control unit 3 is press-fitted onto the control board 31. In the present case, the line terminal sections 43 facing the power switching units 5a, 5b, 5c are configured with bonding pads. The electrical connection between the line terminal sections 43 and the power switching units 5a, 5b, 5c can be achieved by means of various conventional methods, in particular by soldering or bonding, for example by ultrasonic bonding or laser bonding of bonding wires. In addition, a press fit between the line terminal sections 43 and the power switching units 5a, 5b, and 5c is also possible. The heating assembly 100 shown according to the invention enables a high degree of flexibility in the design of the control unit housing 30 and can be manufactured in a simple and cost-effective manner.

[0084] With respect to the heating assembly described, the heating device may include additional components, such as the cover of the control unit housing 30 shown in an open manner in Figure 1 , additional housing components, such as the cover of the heating side 11 and elements assembled to the heating side 11, such as the heating elements 2a, 2b, 2c, the power switching units 5a, 5b, 5c having corresponding circuit boards, the through-holes 13a, 13b, 13c, and the connecting lines 4a, 4b, 4c passing through the through-holes 13a, 13b, 13c, and electrical terminals or incoming lines for the heat transfer medium.

[0085] A second embodiment of the heating assembly 100 according to the invention (see Figures 8 to 22 ) is shown in a perspective view in Figure 8 . As in the first embodiment, the heating assembly 100 is particularly used for a high-voltage fluid heating device of an electric or hybrid vehicle. It is emphasized here that the elements shown in the second embodiment according to Figures 8 to 22 , such as the housing cover or details of the control unit 3 of the heat exchanger 1, can be implemented in a corresponding manner even if not visible in the first embodiment according to Figures 1 to 7 . In particular, the second embodiment can be combined with the first embodiment.

[0086] In the present embodiment, the heating assembly 100 also basically consists of three components, namely a heat exchanger 1, a heat conversion unit 200 having heating elements 2a, 2b, 2c, and a control module or control unit 3. The heat exchanger 1 and the heat conversion unit 200 can be structurally combined to form a heat exchanger module 500, to which the control unit 3 is fastened. The heat exchanger module 500 has a substantially planar design and has a rectangular contour in a top view.

[0087] In Figure 8 , the heat exchanger 1 is oriented upward and includes a deep-drawn top cover 17, which, in combination with a flat or planar support 10, forms a likewise planar fluid chamber 126 having one or more flow pipes 16 therein (in Figure 8 , the top cover 17 is arranged at the top and the support 10 is located below). The flat peripheral edge of the top cover 17 is welded or fused to the support 10 for laterally enclosing the fluid chamber 126. Since according to Figure 8 the top cover 17 of Figure 6 and Figure 7 is arranged on the support 10 (only identified by the arrow), the support 10 is hardly visible there. In the fluid chamber 126, a turbulator (not shown in the figure) is installed, which mixes the flowing fluid, supports the transfer of heat to the fluid, and together forms the flow pipes 16 (see

[0088] ). The fluid can enter the fluid chamber 126 through the inflow connection 18 and is further heated and discharged again via the outflow connection 19.

[0088] The heat conversion unit 200 includes three heating elements 2a, 2b, 2c and, in contrast to the first embodiment, includes a single common power switching unit 5 covered by a housing cover 131, which housing cover 131 is fastened to the planar support 10 (or to the edge of the top cover 17 welded or fused to the support 10) by means of folded tabs 133. Starting from the housing cover 131, in the plane defined by the heat exchanger 1, an assembly element 123, which is integrally constructed with the housing cover 131 and can be assembled in a vehicle, extends outward in the lateral direction.

[0089] The support 10 is constructed as a flat plate. In the particular exemplary embodiment shown, the top cover 17 of the heat exchanger 1 and the housing cover 131 of the heat conversion unit 200 together form a second module housing 420 for the heat exchanger module 500.

[0090] Figure 9The heating elements 2a, 2b, 2c and the power switching unit 5 are shown in a top view in a state of being assembled to the support 10 of the heat exchanger 1. In the present embodiment, the heating elements 2a, 2b, 2c are configured in the form of a ceramic substrate (as a support layer), made of, for example, Al2O3, and having a screen-printed heating conductor layer. The heating conductor layer is implemented as a metal coating made of a resistive alloy and constitutes the corresponding heating resistor. The interruption of insulation enables the structuring of the elongated printed conductor 20. The ceramic substrate can be assembled to the planar support 10 by means of a thermally conductive bonding layer / adhesive (not shown).

[0091] The conductor tracks of the heating conductor 20 are designed with respect to their resistance (determined by the thickness, length, width of the material used and the specific layer resistance) such that they can generate the required heating power at the operating voltage supplied in the high voltage range (e.g., 800V in the present embodiment), preferably in the range of 5 - 13 kW.

[0092] The power switching unit 5 includes a board or a circuit board and includes a plurality of power switching elements (not shown separately here), such as IGBTs or power MOSFETs, by means of which the heating elements 2a, 2b, 2c can be operated, for example, by PWM control. For this purpose, the corresponding terminal pads of the conductor tracks of the heating conductor 20 are connected to the power switching elements on the power switching unit 5 by means of the bonding connection structure 137.

[0093] The power switching unit 5 further includes a temperature sensor 6, which can detect the temperature of the support 10 in its environment for regulating the heating operation. In an exemplary embodiment, the position of the temperature sensor 6 on the power switching unit 5 corresponds to the inlet connection 18 and the outlet connection 19 on the opposite side of the support 10 or the heat exchanger 1.

[0094] The power switching unit 5 is connected to the corresponding terminals by means of additional bonding connection structures 139, and these terminals are configured on three stamping grids 8, and the three stamping grids 8 are assigned to the corresponding heating elements 2a, 2b, 2c. The bonding connection structure 139 includes electrical conductors for supplying (high voltage) power, for controlling the power switching elements, and for communicating with the temperature sensor. The stamping grids 8 are arranged in the through-holes 13a, 13b, 13c of the support 10, and the through-holes 13a, 13b, 13c are configured in the connection section 15 of the support 10 for the assembly and attachment of the control unit 3. In Figure 9 which, for the sake of clarity only, the threaded openings 50 shown in the first embodiment with respect to Figure 3a and Figure 3b have been omitted, but in practice, the threaded openings 50 are present at the corresponding positions adjacent to the through-holes 13a, 13b and 13c.

[0095] The control unit 3 includes a control device 35, a first module housing 410 for accommodating the control device 35, a high-voltage connector section 60 and a low-voltage connector section 70 arranged in the first module housing 410. The first module housing 410 presents a design of an approximate cuboid. In the current case, the sections 60 and 70 are configured as embedded sockets into which the coupling structures of the corresponding vehicle-side high-voltage connection and low-voltage connection can be inserted.

[0096] Figures 10 to 13 The layout of the control unit 3 is shown in more detail, where, in the perspective view according to Figures 10 to 13 the elements are successively omitted respectively to allow observation of the internal space of the control unit 3.

[0097] In Figure 10 only the control unit 3 and the power switching unit 5 connected to the control device 35 are shown. It can be seen that the first module housing 410 includes a base member 411 having a complex geometry and a substantially flat cover 412. The cover 412 closes the opening in the base member 411 (in Figure 10 the opening faces rearward) and is fastened to the base member 411 by ultrasonic welding. The base member 411 and the cover 412 define an internal space 413 ( Figure 10 not shown in Figure 10 ), and the control device 35 is arranged in the internal space 413. Figure 10 The bonding connection structure 137 from the heating elements 2a, 2b, 2c (

[0098] not shown in Figure 10 ) to the power switching unit 5 is also shown, and to some extent, the additional bonding connection structure 139 from the power switching unit 5 to the stamping grid 8 is also shown. The stamping grid 8 is in turn connected to the control device 35. Figure 15 (Only the housing with the pressure balance opening 419 is shown, and other elements are omitted) and Figure 19 (The membrane 491 is shown).

[0099] Figure 11 Shows the one related to Figure 10Same view, but the high-voltage connector section 60 is omitted. Thus, the opening 414 for the high-voltage connector section 60 can be seen, into which the high-voltage connector section 60 will be inserted and fixed by means of screws 415, and the high-voltage connector section 60 is configured as a separate component.

[0100] The first module housing 410 is substantially composed of a two-component plastic material. In particular, the first module housing 410 includes an inner first layer 440 and an outer second layer 450. In Figure 10 and Figure 11 the views point to the outer surface of the first module housing such that the outer second layer 450 can be seen. The outer second layer 450 is formed of an electrically insulating plastic. In particular, this is a thermoplastic material reinforced with glass fibers, such as PPS. The proportion (by mass) of glass fibers in the material is preferably 40%.

[0101] Figure 12 A perspective view of the same first module housing 410 as Figure 10 or Figure 11 is shown, but the second layer 450 is removed so that the inner first layer 440 of conductive plastic material can be seen. The plastic material is a thermoplastic material reinforced with carbon fibers. The proportion (by mass) of carbon fibers is preferably 40%. Here, for example, the thermoplastic material is PPS such that the two layers exhibit similar and thus compatible thermal properties. PPS is fireproof and is therefore particularly suitable for use in heating devices.

[0102] To manufacture the first module housing 410, the two plastic material compounds are injection molded directly in a sequential manner in time. First, the plastic material for the first layer 440 is injection molded, and thereafter, when the temperature is still slightly above 100 degrees, it is removed using a turntable and the plastic material is applied by spraying to form the second layer. This temperature ensures an effective bond but does not cause intermixing and blending of the materials. As Figure 12 shown, to further improve the adhesion to ensure long-term integrity, the corrugations 415 molded into the first layer 440 during the injection molding process can be seen, which are also correspondingly reflected in the second layer 450 (not shown) applied to the first layer 440 by spraying.

[0103] In Figure 12 it can also be seen that the first layer 440 does not extend into the section 442 configured with the low-voltage connector section 70. Instead, this section is occupied by the second layer 450 such that the low-voltage connector section 70 is configured as an integrated element (rather than a subsequently assembled component) in the first module housing 410. As in Figure 12As can be seen in the perspective view of the internal space 413 of the first module housing 410, the pins 71 of the low-voltage connector section 70 extend directly through the second layer 450 and are thus isolated from each other.

[0104] As can also be seen from Figure 12 that in Figure 11 the self-tapping screws 415 for attaching the high-voltage connector section 60 (see Figure 10 ) are located at positions in the second layer 450 where relatively small holes 451 are formed, and there are also cutouts in the first layer, see Figure 12 the larger hole 441 in. Thus, it is ensured via the screws 415 that no high-voltage potential reaches the surface, and due to the material of the first layer 440, the high-voltage potential cannot decay fast enough.

[0105] In addition, in Figure 12 around the opening 414 for the high-voltage connector section 60, a recess is formed in the first layer 440, in which the metal ring 91 of the metal sheet insert 9 is embedded. When the high-voltage connector section 60 is inserted into the opening 414 and a heating operation is in progress, the metal ring 91 is used for shielding in the area of the opening 414. By integrating the metal sheet insert into the two-component plastic material, the base member 411 thus consists of at least three-component materials.

[0106] The metal sheet insert 9 also has a first metal conductor 92 and a second metal conductor 93, which can be best seen in Figure 14 and they are also at least partially embedded in the first layer 440. The first metal conductor 92 extends from the metal ring 91 to a terminal on the support 10, which is formed by one of the four fixing screws 51 for fastening the control unit 3 to the support 10. For this purpose, in the support 10, threaded openings 50 are arranged at corresponding positions, which can be seen in a similar manner as in the first embodiment in FIGS. 3 and Figure 4 . The second metal conductor 93 extends from the metal ring 91 to a terminal on the control board 31 of the control device 35. The metal ring 91 is thus safely held at ground potential. Figure 15 Partially shows the surface of the metal sheet insert 9 facing the internal space 413 and exposed in the internal first layer 440.

[0107] Figure 16 and Figure 17 The control module or control unit 3 is shown from the rear side, i.e., in particular the cover 412 of the module housing 410. In Figure 16 the view shown points to the external second layer 450 which also forms the outer surface, while in Figure 17 a view of the internal first layer 440 is shown ( Figure 10the second layer therein is omitted). The cover 412 is irreversibly attached to the base member 411 by ultrasonic welding. For this purpose, grooves 418 may be provided in the cover 412 (see Figure 13 ), and the peripheral lugs 417 of the base member 411 (see Figure 15 ) are inserted and welded into the grooves 418.

[0108] The control device 35 can be seen most clearly in Figure 18 . The control device 35 is configured by a control board 31 which has electronic modules, in particular one or more (not shown) microcontrollers, arranged thereon. The molding compound 402 is used to stabilize and protect the control device 35 (i.e., the control board 31) located in the internal space 413 of the first module housing 410. In Figure 15 , four locating pins 407 are shown which extend from the first module housing 410 (as an integrally configured element) into the internal space 413 and, in the installed state, extend through holes (not shown) in the control board 31 and are fixed to the holes by thermal caulking, such that the control board 31 is firmly positioned and supported in the internal space 413.

[0109] The above-mentioned stamping grid 8 is shown in Figure 13 and Figure 14 , and is shown in more detail in Figure 21 and Figure 22 . Each stamping grid is composed of connecting lines 4a, 4b, 4c which are stamped from a metal plate and are accordingly embedded in the plastic insert 32. The connecting lines 4a, 4b, 4c are connected to corresponding contact portions on the control board 31 which is implemented as the control device 35. The relative positioning is achieved by means of dome-shaped locating pins 85 which engage or fit into corresponding holes (by press fit) configured in the control board 31 (not shown).

[0110] The stamping grid 8 is accordingly spatially arranged in corresponding holes 430 which are configured in the lower region of the first module housing 410, as shown in Figure 8 and Figure 13 . In the assembled state, the holes 430 of the first module housing 410 and the through holes 13 in the support body 10 are oriented with respect to each other such that the stamping grid 8 extends through both and is fixed in place.

[0111] As shown in Figure 21 and Figure 22As shown, the stamping grid 8 includes connecting lines 4a, 4b, 4c, which have terminals at both ends. The first terminal or wire terminal section 41 is used to connect to the bonding connection structure 139, and the electrical connection to the power switching unit 5 is achieved by means of the bonding connection structure 139. The opposite second terminal or wire terminal section 43 is configured in a pin type design and, in the assembled state, is assembled (soldered) to the contact on the control board 31 using THT (through-hole technology) and is thus bonded to the control device 35. The intermediate section 42 of the connecting lines 4a, 4b, 4c is substantially covered by the plastic insert 32. As in the first embodiment, by means of Figure 21 and Figure 22 The preferred double-fold angles of the connecting lines 4a, 4b, 4c shown in form a Z-shaped design in the lateral cross-section. In particular, the wire terminal sections 41, 43 of the respective connecting lines 4a, 4b, 4c extend in a direction parallel to the main extension plane of the preferably plate-shaped support 10, while the intermediate section 42 of the wire embedded in the plastic insert extends perpendicular to the main extension plane of the support 10.

[0112] In Figure 20 it is shown that on the lower side of the first module housing 410, adjacent to the hole 430 for the stamping grid 8, holes 494 for self-tapping fastening screws 51 are respectively provided in the region of the four wall reinforcements 493 in the first module housing 410 (see Figure 19 ), and the position of the self-tapping fastening screws 51 relative to the module housing is shown in Figure 13 and Figure 14 In Figure 13 and Figure 14 as well as Figure 20 it can also be seen that the seal 492 surrounds the through-holes 13a, 13b, 13 or the hole 430 and thus protects the internal space 413 of the first module housing 410 and the internal space of the second module housing 420 containing the power switching unit 5 and the heating elements 2a, 2b, 2c from moisture intrusion.

[0113] For assembly, the fixing screw 51 passes through the corresponding threaded opening 50 (not shown in Figures 8 to 22 but also implemented in this embodiment in a manner corresponding to the first embodiment in FIGS. 3 and Figure 4 ) and is inserted into the support 10 and screwed into Figure 19In the wall reinforcement 493 shown. The seal 492 is applied between the mutually facing surfaces of the support 10 and the first module housing 410, or is molded into a groove provided in the first module housing 410 and fixed to the groove by a press fit. In particular, the seal 492 can advantageously be applied by spraying and directly molded onto the base member 411. According to this variant, since two different plastics, a metal sheet insert and a seal are combined, the base member 411 thus consists of at least four component materials.

[0114] It should be noted that all the above features of the present invention, whether considered individually or in any technically appropriate combination, in particular the details shown in the drawings, are included within the scope of the present invention.

[0115] List of reference numerals

[0116] 1 Heat exchanger

[0117] 2a, 2b, 2c Heating elements

[0118] 3 Control unit

[0119] 4a, 4b, 4c Connection lines (e.g. in a stamping grid)

[0120] 5, 5a, 5b, 5c Power switching units

[0121] 6a, 6b, 6c Temperature sensors

[0122] 8 Stamping grid

[0123] 9 Metal sheet insert

[0124] 10 Support

[0125] 11 Heat transfer side

[0126] 12 Heating side

[0127] 13a, 13b, 13c Through holes

[0128] 14 Heat transfer section

[0129] 15 Connection section

[0130] 16 Flow pipe

[0131] 17 Top cover

[0132] 18 Inflow connector

[0133] 19 Outflow connector

[0134] 20 Heating conductor

[0135] 30 Control unit housing (=First module housing)

[0136] 31 Control board

[0137] 32 Plastic insert for stamping grid

[0138] 33 Seal

[0139] 35 Control device

[0140] 41, 43 Line terminal section

[0141] 42 Middle section of line

[0142] 50 Threaded opening

[0143] 51 Screw

[0144] 60 High-voltage connector section

[0145] 70 Low-voltage connector section

[0146] 81 Terminal for control device

[0147] 83 Terminal for engaging connection structure

[0148] 85 Dome-shaped locating pin

[0149] 91 Metal ring

[0150] 92 First metal conductor

[0151] 93 Second metal conductor

[0152] 100 Heating assembly

[0153] 123 Assembly element

[0154] 126 Fluid chamber

[0155] 131 Housing cover

[0156] 133 Tab

[0157] 137 Engaging connection structure

[0158] 139 Another engaging connection structure

[0159] 200 Heat conversion unit

[0160] 402 Molding compound

[0161] 407 Locating pin

[0162] 410 First module housing

[0163] 411 Base component

[0164] Cover 412

[0165] Internal space 413

[0166] Opening for high - voltage connector section 414

[0167] Corrugation 415

[0168] Lug 417

[0169] Groove 418

[0170] Pressure - balance opening 419

[0171] Second module housing 420

[0172] Hole (in the first module housing) 430

[0173] First layer of conductive plastic material 440

[0174] Holes in the first layer 441

[0175] Removed section in the first layer 442

[0176] Cutout for the metal ring in the first layer 443

[0177] Second layer of electrically insulating plastic material 450

[0178] Gore - Tex membrane 491

[0179] Seal (between the control module and the support plate) 492

[0180] Reinforcement (module housing) 493

[0181] Threaded hole (module housing) 494

[0182] Heat exchanger module 500

Claims

1. A heating assembly (100) for a vehicle, in particular for an electric or hybrid vehicle, comprising: - A heat exchanger (1) having a support (10) for planar electric heating elements (2a, 2b, 2c) in particular, wherein the support (10), which is preferably plate-shaped, has a heating side (12) and a heat transfer side (11) arranged opposite the heating side (12); - At least one electric heating element (2a, 2b, 2c), preferably a layer heating element, attached to the heating side (12) of the support (10); - A control unit (3) for the at least one heating element (2a, 2b, 2c); and - At least one electric connection line (4a, 4b, 4c) connected to the control unit (3) for supplying power to the heating elements (2a, 2b, 2c); It is characterized in that the support (10) includes at least one through hole (13a, 13b, 13c) from the heat transfer side (11) to the heating side (12), and the connection lines (4a, 4b, 4c) extend through the at least one through hole (13a, 13b, 13c).

2. The heating assembly (100) according to claim 1, characterized in that The control unit (3), preferably configured to control a plurality of heating elements (2a, 2b, 2c), includes a control unit housing (30) for accommodating a control board (31) in particular, which is arranged on the heat transfer side (11) of the support (10).

3. The heating assembly (100) according to claim 1 or 2, characterized in that The control unit (3) and the inflow connection (18) and / or outflow connection (19) for the heat transfer medium are arranged on the same side of the support (10), preferably on the heat transfer side (11).

4. The heating assembly (100) according to any one of the preceding claims, characterized in that The support (10) includes a heat transfer section (14) in the region of the at least one heating element (2a, 2b, 2c) and a connection section (15) outside the heat transfer section (14), wherein the at least one through hole (13a, 13b, 13c) is formed in the connection section (15).

5. The heating assembly (100) according to any one of the preceding claims, characterized in that The heat exchanger (1) includes at least one flow duct (16) on the heat transfer side (11) of the support (10) to accommodate the flow of the heat transfer medium.

6. The heating assembly (100) according to any one of the preceding claims, characterized in that The heat exchanger (1) includes a top cover (17), and the top cover (17) and the support (10) together form a void for accommodating the flow of the heat transfer medium and in particular form at least one flow duct (16).

7. The heating assembly (100) according to any one of the preceding claims, characterized in that The through holes (13a, 13b, 13c) penetrate the top cover (17) and the support (10) in the region of the connection section (15) of the support (10).

8. The heating assembly (100) according to any one of the preceding claims, characterized in that On the heating side (12) of the support (10), at least one power switching unit (5a, 5b, 5c) is assembled for regulating the power of the heating elements (2a, 2b, 2c), wherein the power switching units (5a, 5b, 5c) are preferably arranged between the through holes (13a, 13b, 13c) and the heating elements (2a, 2b, 2c) and are electrically connected in particular by means of the connection lines (4a, 4b, 4c).

9. The heating assembly (100) according to any one of the preceding claims, characterized in that The power switching units (5a, 5b, 5c) are connected to a temperature sensor (6), which is arranged on the heating side (12) of the support (10), preferably on the circuit board of the power switching units (5a, 5b, 5c).

10. The heating assembly (100) according to any one of the preceding claims, characterized in that A plurality of heating elements (2a, 2b, 2c) are assembled to the heating side (12) of the support (10) and / or the support (10) includes a plurality of through holes (13a, 13b, 13c), wherein each heating element (2a, 2b, 2c) is preferably assigned one through hole (13a, 13b, 13c).

11. The heating assembly (100) according to any one of the preceding claims, characterized in that Each through hole (13a, 13b, 13c) is assigned a power switching unit (5a, 5b, 5c), and the power switching units (5a, 5b, 5c) are correspondingly connected to connection lines (4a, 4b, 4c), wherein, in particular, each heating element (2a, 2b, 2c) is assigned one power switching unit (5a, 5b, 5c).

12. The heating assembly (100) according to any one of the preceding claims, characterized in that The main extension plane of the control board (31) of the control unit (3) is arranged at an angle of at least 45°, preferably 90°, with respect to the main extension plane of the power switching units (5a, 5b, 5c) and / or the heating elements (2a, 2b, 2c).

13. The heating assembly (100) according to any one of the preceding claims, Characterized in that, The connection lines (4a, 4b, 4c) are implemented as printed conductors partially surrounded by a plastic insert (32), in particular in the form of a bent stamping grid, wherein the outer contour of the plastic insert is adapted to the inner contour of the through holes (13a, 13b, 13c).

14. The heating assembly (100) according to any one of the preceding claims, Characterized in that, The connection lines (4a, 4b, 4c) include preferably double-folded corners, wherein, in particular, the line terminal sections (41, 43) of the connection lines (4a, 4b, 4c) extend parallel to the main extension plane of the preferably plate-shaped support (10), and in particular, the middle section (42) of the line extends perpendicular to the main extension plane of the support (10).

15. The heating assembly (100) according to any one of the preceding claims, wherein: In the control unit housing (30, 410), at least one hole (430) is configured for the feedthrough of the electrical connection between the control board (31) and the power switching unit (5), the control board (31) forms a control device (35) in the control unit housing (30, 410), and the power switching unit (5) is for switching the electrical heating elements (2a, 2b, 2c); and wherein a stamping grid (8) is correspondingly arranged in the at least one hole (430), the stamping grid (8) has connection lines (4a, 4b, 4c) embedded in the plastic insert (32), and the connection lines (4a, 4b, 4c) are connected to corresponding contact parts on the control board (31) forming the control device (35).

16. The heating assembly (100) according to claim 15, wherein: The stamping grid (8) extends through the hole (430) and the through holes (13a, 13b, 13c) into the interior space (413) of the control unit housing (41), and in the interior space (413) of the control unit housing (41), the stamping grid (8) is fixed to the control board (31) forming the control device (35) by at least one positioning device, in particular by a positioning pin (85).

17. A heating device for a motor vehicle, in particular for an electric or hybrid vehicle, preferably a high-voltage heating device, Characterized in that, The heating device includes at least one heating assembly (100) according to any one of claims 1-16.

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