Receiving Device and Method for Production

Abstract

A receiving device for a system for inductive power transmission has a housing with a cover part and a base part as housing parts. The housing has an internal volume for receiving at least one winding structure. One of the housing parts has at least one rib and the other housing part has at least one groove for receiving the at least one rib. The at least one rib and the at least one groove are arranged between the internal volume and an external volume. The receiving device has at least one sealing element. At least one portion of the at least one rib and at least one portion of the at least one sealing element are arranged in at least one portion of the at least one groove. A method for producing the receiving device is also disclosed.

Claims

1. A receiving device for a system for inductive power transmission, the receiving device comprising: a housing, wherein the housing comprises a cover part and a base part as housing parts, wherein the housing has an internal volume for receiving at least one winding structure, wherein one of the housing parts has at least one rib and the other housing part has at least one groove for receiving the at least one rib, wherein the at least one rib and the at least one groove are arranged between the internal volume and an external volume, wherein the receiving device comprises at least one sealing element, wherein at least a portion of the at least one rib and at least a portion of the at least one sealing element are arranged in at least a portion of the at least one groove, wherein the receiving device comprises at least one signal connection means, wherein the signal connection means extends from the internal volume into an external volume, and wherein the signal connection means extends through the at least one sealing element.

2. The receiving device according to claim 1, wherein at least one of the housing parts has at least one fastening means for fastening the housing parts to one another, wherein the at least one fastening means is arranged outside the sealed internal volume.

3. The receiving device according to claim 1, wherein at least one of the housing parts has a first membrane element.

4. The receiving device according to claim 3, wherein the first membrane element is vapour-permeable.

5. The receiving device according to claim 3, wherein at least one of the housing parts comprises at least one further membrane element.

6. The receiving device according to claim 5, wherein the further membrane element is elastic and vapour-impermeable.

7. The receiving device according to claim 5, wherein an outer end of at least one of a first membrane element and the further membrane element is arranged in a channel on an outer side of the housing.

8. The receiving device according to claim 1, wherein the at least one rib and the at least one groove each have at least one concave portion.

9. The receiving device according to claim 1, wherein the at least one sealing element has protrusions on an outer surface.

10. The receiving device according to claim 1, wherein the at least one sealing element is elastic in a temperature range from 40 C. +120 C.

11. A method for producing a receiving device for a system for inductive power transmission, the method comprising: providing a base part and a cover part as housing parts of a housing of the receiving device, wherein one of the housing parts has at least one rib and the other housing part has at least one groove for receiving the at least one rib, arranging at least a portion of a sealing element in at least a portion of the groove, and connecting the cover part to the base part in such a way that at least a portion of the at least one rib is arranged in at least a portion of the at least one groove and traps the sealing element arranged therein, wherein the at least one rib, the at least one groove and the at least one sealing element are arranged between an internal volume for receiving a winding structure and an external volume, wherein the receiving device comprises at least one signal connection means, wherein the signal connection means extends from the internal volume into an external volume, and wherein the signal connection means extends through the at least one sealing element.

Description

[0085] The invention will be explained in greater detail on the basis of an exemplary embodiment. The figures show:

[0086] FIG. 1 a schematic cross-section through a receiving device according to the invention,

[0087] FIG. 2 a schematic cross-section through a cover part,

[0088] FIG. 3 a schematic plan view of a cover part,

[0089] FIG. 4 a schematic view of a cover part from underneath,

[0090] FIG. 5 a schematic plan view of a base part, and

[0091] FIG. 6 a schematic longitudinal section through a base part,

[0092] FIG. 7 a detailed view of a cover part from underneath,

[0093] FIG. 8 a detailed cross-section through a closed housing, and

[0094] FIG. 9 a schematic side view of a sealing element,

[0095] FIG. 10 a detailed view of a cover part from underneath,

[0096] FIG. 11 a detailed cross-section through a closed housing,

[0097] FIG. 12 a perspective view of an edge portion of a base part,

[0098] FIG. 13 a cross-section through a closed housing in a plug receptacle region.

[0099] Hereinafter, like reference signs denote elements having like or similar technical features.

[0100] FIG. 1 shows a schematic cross-section through a receiving device 1 of a system for inductive energy transmission. The receiving device 1 comprises a housing, wherein the housing comprises a cover part 2 and a base part 3. The cover part 2 consists of aluminium. The base part 3 consists of plastic, in particular glass-fibre-reinforced plastic.

[0101] The base part 3 can be fastened to the cover part 2, whereby a closed state of the housing or of the receiving device 1 is produced. In particular, the base part 3 can be screwed to the cover part 2. In order to provide a screwed connection of this kind, the base part 3 can have through-holes 4, 29 (see FIG. 5) and the cover part can have corresponding threaded portions 5, 27 (see FIG. 2). In the closed state the base part 3 is arranged fully in an internal volume 6 of the cover part 2. Side walls 7 of the cover part 2 in the closed state surround sides of the base part 3.

[0102] The receiving device can be fastened to a vehicle (not shown). In particular the receiving device 1 can be screwed to the vehicle, in particular to a front axle carrier of the vehicle. In order to provide a screwed connection of this kind, the base part 3 and the cover part 2 can have through-holes 8a, 8b that correspond to one another (see FIG. 5 and FIG. 3), wherein a screw can extend through the corresponding through-holes 8a, 8b in the cover part 2 and the base part 3 in the closed state. Furthermore, the screw can extend into a threaded portion of the vehicle.

[0103] It is also shown that the receiving device, in particular the cover part 2, has a first receptacle region 9a and a second receptacle region 9b. The receptacle regions 9a, 9b are spatial sub-regions of an internal volume of the housing and the closed state.

[0104] The following reference coordinate system can be used hereinafter. A vertical axis z can be oriented orthogonally to a flat surface of the cover part 2 or to a flat base surface of the base part 3. If the receiving device 1 is fastened to the vehicle, which can also be referred to as an installed state, the vertical axis z can thus be oriented parallel to a yaw axis of the vehicle. Furthermore, a vertical direction can be oriented parallel to the main direction of the inductive power transmission. Furthermore, a lateral axis y is shown, wherein the lateral axis y is oriented perpendicularly to the vertical axis z. In the installed state the lateral axis y can be oriented parallel to a pitch axis of the vehicle. FIG. 3 shows a longitudinal axis x. The longitudinal axis is oriented orthogonally to the vertical axis and lateral axis z, y. In the installed state the longitudinal axis x can be oriented parallel to a roll axis of the vehicle. Furthermore, a vertical direction, a lateral direction, and a longitudinal direction are shown by direction arrows.

[0105] In the fastened state of the receiving device 1, the cover part 2 is installed on the base part 3.

[0106] It is also shown that the first receptacle region 9a is arranged on a first lateral edge region of the receiving device 1, in particular of the cover part 2. The second receptacle region 9b is arranged in a second lateral edge region. The edge regions are arranged here on opposite ends of the receiving device 1 with respect to the lateral axis y.

[0107] A receptacle region 9a, 9b can be formed for example by an indentation in the receiving device, in particular in the cover part 2. Alternatively or cumulatively, a receptacle region 9a, 9b can be defined by fastening means for fastening a printed circuit board 10a, 10b to the receiving device 1, in particular for fastening to the cover part 2.

[0108] It is also shown that the receiving device 1 comprises a first printed circuit board 10a and a second printed circuit board 10b. The first printed circuit board 10a is arranged in the first receptacle region 9a. Furthermore, the first printed circuit board 10a is fastened to the cover part 2. Furthermore, the second printed circuit board 10b is arranged in the second receptacle region 9b. Furthermore, the second printed circuit board 10b is fastened to the cover part 2.

[0109] In particular, the printed circuit boards 10a, 10b can be screwed to the cover part 2. In order to provide a screwed connection of this kind, screws 11 can extend through through-holes in the printed circuit boards 10a, 10b (not shown) into threaded portions of the cover part 2. The mechanical connection between the printed circuit boards 10a, 10b and the cover part 2 can also provide an electrical connection between the printed circuit boards 10a, 10b and the cover part 2.

[0110] It is possible that the cover part 2 is electrically connected to a reference potential, for example a ground potential, of the vehicle. In this case the electrical connection of the printed circuit boards 10a, 10b to the cover part 2 can also provide an electrical connection of the printed circuit boards 10a, 10b to the reference potential. The electrical connection between the cover part 2 and the reference potential of the vehicle can be provided here by the mechanical connection between the receiving device in the vehicle, in particular by the screws for fastening the receiving device 1 to the vehicle.

[0111] In the closed state of the housing or in the installed state of the receiving device, the receptacle regions 9a, 9b are arranged laterally or next to a winding structure 12 (see FIG. 5) for receiving the electromagnetic alternating field for power transmission with respect to the lateral direction. The winding structure 12 can be arranged in a central portion of the internal volume of the housing in the closed state.

[0112] It is also shown that the receiving device comprises a first magnetic shield element 13a and a second magnetic shield element 13b. A magnetic shield element here refers to an element for shielding the magnetic field. The magnetic shield elements 13a, 13b can be formed as aluminium plates. Furthermore, the magnetic shield elements 13a, 13b can be fastened to the base part 3. In particular, the magnetic shield elements 13a, 13b can be arranged in indentations on a bottom side of the base part. Furthermore, the underside of the magnetic shield elements 13a, 13b can be arranged flush with the underside of the base part 3. The first magnetic shield element 13a fully covers the first receptacle region 9a from underneath. In other words, the first magnetic shield element 13a is arranged beneath the first receptacle region 9a with respect to the vertical direction. Furthermore, the first magnetic shield element 13a is arranged in such a way that the first receptacle region 9a, in particular the first printed circuit board 10a, which is arranged in the first receptacle region 9a, is shielded fully from beneath from a magnetic field. As a result, an amount of magnetic field lines which extend through the receptacle regions 9a, 9b when an electromagnetic alternating field for power transmission is provided is thus minimised or even reduced to zero. Magnetic shield elements 13a, 13b are arranged in such a way that an interaction of electrical and/or electronic elements, in particular elements of the printed circuit boards 10a, 10b, with the electromagnetic field for power transmission is minimised.

[0113] The first printed circuit board 10a can also be referred to as a low-voltage printed circuit board. This can mean that electrical and electronic components of the first printed circuit board 10a can be supplied with a maximum voltage of 12 V or 42 V or can provide such a voltage. The second printed circuit board 10b can also be referred to as a high-voltage printed circuit board. This can mean that electrical and electronic components of the second printed circuit board 10b can be supplied with a maximum voltage of up to 1200 V or can provide such voltage.

[0114] Components of the first printed circuit board 10a can thus provide control means for controlling operation of the receiving device 1 and communication means for providing communication with the vehicle and/or a primary unit. Components of the second printed circuit board 10b can thus provide a desired direct voltage of the receiving device 1 from the alternating voltage which is induced in the winding structure 12 by the electromagnetic field for power transmission.

[0115] A first plug 14a is also shown, by means of which a signal and a data connection to components of the first printed circuit board 10a can be produced. The first plug 14a can be formed for example as a CAN plug. At least part of the first plug 14a is arranged here on an outer surface of a side wall of the cover part 2. A second plug 14b, which can also be referred to as a power plug or direct voltage interface, is also shown. A connection for power transmission and, as applicable, for signal transmission between components of the second printed circuit board 10b and the vehicle can be produced by the second plug 14b. The second plug 14b can also be arranged on an outer surface of a side wall of the cover part. The second plug 14b can be a plug with cable gland in order to ensure the seal of the internal volume of the housing and the closed state.

[0116] A groove 15 of a lip-and-groove connection is also shown. The groove 15 is arranged here in an edge region of the cover part 2. In particular, the groove 15 is a circumferential groove. The groove 15 is used to receive a sealing element, in particular a circumferential sealing element (not shown).

[0117] The base part 3 has a corresponding lip of the lip-and-groove connection formed as a rib 16. The rib 16 is arranged in an edge region of the base part 3 and on an upper side of the base part 3. In particular, the lip 16 is provided by a rib which protrudes from the upper side of the base part 3.

[0118] In the closed state of the housing, the lip 16 extends into the groove 15 and clamps the sealing element in the groove 15.

[0119] In this way, a robust and reliable seal of the internal volume of the housing, in which the printed circuit boards 10a, 10b and the winding structure 12 are arranged, can be produced. The lip 16 can also be formed as a circumferential lip.

[0120] Ferrite bars 17, which are part of a ferrite arrangement and provide magnetically conductive elements, are also shown. Here, it is shown that the ferrite bars 17 are arranged in and on the winding structure 12, in particular above a central portion of the winding structure 12. The ferrite bars 17 and the winding structure 12 can be fastened to the base part 3. In particular, the winding structure 12 and the ferrite bars 17 can be cast with the base part 3. The ferrite bars 17 can be arranged in such a way that a desired course of field lines of the magnetic field is produced.

[0121] A thermally conductive pad 18, which forms a heat-conductive element, is also shown. The thermally conductive pad 18 is arranged on the ferrite bars 17. The thermally conductive pad 18 can have a high thermal conductivity. In the closed state of the housing the thermally conductive pad can contact an inner portion of a housing wall and the ferrite bars 17 and can thus produce a thermal connection between the ferrite elements 17 and the cover part 2.

[0122] Furthermore, the thermally conductive pad 18 can provide an adhesive element. For example, it is possible that the thermally conductive pad is formed as a double-sided adhesive element or one-sided adhesive element. The thermally conductive pad 18 can thus be used to secure a ribbon cable 36 in a receptacle groove 37 of the cover part 2 (see FIG. 4). Alternatively to the ribbon cable 36, a flexible printed circuit board can also be used in the receptacle groove 37.

[0123] In other words, the receiving device 1 can comprise at least one heat-conductive element, wherein the heat-conductive element produces a thermal connection between the cover part 2 and the winding structure 12 or a ferrite arrangement in a closed state of the housing. In particular, the heat-conductive element can mechanically contact the cover part 2 and the winding structure 12 or the ferrite arrangement.

[0124] FIG. 2 shows a schematic cross-section through the cover part 2. The printed circuit boards 10a, 10b, which are fastened to the cover part 2 by screws 11, are shown. The groove 15 of the lip-and-groove connection is also shown. Cylindrical protrusions 19 on the underside of the cover part 2, which comprise a threaded portion for receiving the screws 11 for fastening the base part 3 to the cover part 2 are also shown.

[0125] Conical protrusions 20 of the cover part 2, in particular on the underside of the cover part 2, which extend into the internal volume 6 of the cover part 2 and provide the thread for the screws 11 for fastening the printed circuit boards 10a, 10b to the cover part 2 are also shown. These conical protrusions 20 are arranged in the receptacle regions 9a, 9b and extend through through-holes into the printed circuit boards 10a, 10b (not shown). This advantageously allows the printed circuit boards 10a, 10b to be aligned in the corresponding receptacle region 9a, 9b. Cooling bars 21, which are arranged on an upper side of the cover part 2, are also shown. The cooling bars 21 can have different lengths. The length can be selected here in accordance with the installation space conditions. Alternatively or cumulatively to the cooling bars 21, it is also possible for cooling ribs to be arranged on the upper side of the cover part 2.

[0126] The cooling bars 21 can be arranged in a central portion of the cover part 2. In particular, the cooling bars 21 can be arranged outside volumes that are arranged above the receptacle regions 9a, 9b or above the printed circuit boards 10a, 10b. The cooling bars 21 allow a transmission of thermal energy from the cover part 2 into a surrounding environment by convection.

[0127] FIG. 3 shows a schematic plan view of a cover part 2. The through-holes 8b for receiving screws in order to fasten the receiving device 1 to the vehicle are shown. Cooling bars 21, which protrude from an upper side of the cover part 2, are also shown. Indentations 22 in the upper side of the cover part 2 are also shown. These indentations 22 reduce the internal volume of the housing in the closed state of the housing. In particular, the indentations 22 can reduce the amount of air in the internal volume of the receiving device 1. This in turn can reduce a change in pressure of the pressure in the internal volume as a result of changes in temperature. It is possible that temperatures in the receiving device 1 vary between 40 C. and 120 C. These changes in temperature can be dependent on a change in temperature of the external temperature and on thermal energy that is generated by electrical and electronic components in the internal volume, in particular on components of the second printed circuit board 10b. The changes in temperature can result in a change in pressure of the pressure in the internal volume. A reduction of the internal volume therefore advantageously allows a reduction of the level of the change in pressure.

[0128] A first membrane element 23 is also shown. The first membrane element 23 is formed as a semi-permeable, vapour-permeable element. In particular, the vapour-permeable membrane element 23 allows vapour to escape from the internal volume of the receiving device through the membrane element 23 in a closed state of the housing. The first membrane element 23 extends through the cover part 2. The membrane element 23 is arranged on the upper side of the cover part 2 in an inclined channel 24 for water drainage.

[0129] A second membrane element 25 is also shown. The second membrane element is provided by a flexible, non-permeable, in particular non-vapour-permeable material, for example by rubber. The second membrane element advantageously makes possible a change in the internal volume of the receiving device 1 in the closed state of the housing. On account of the above-described changes in temperature, the pressure in the internal volume can exceed a maximally permissible pressure. The second membrane element 25 can be formed in particular in such a way that it deforms under a pressure that is higher than a predetermined pressure.

[0130] In particular if the first membrane element 23 does not allow diffusion of vapour from the internal volume of the housing into a surrounding environment, the second membrane element 25 allows the pressure in the internal volume to lie within certain limits as a result of a deformation. For example, vapour diffusion might then not be possible if the first membrane element 23 is covered by water, for example if the vehicle drives through a deep puddle.

[0131] FIG. 4 shows a schematic view of a cover part 2 from beneath. The printed circuit boards 10a, 10b are shown. An edge region of the cover part 2, in particular an edge region that encloses the first printed circuit board 10a, has an indentation 26 for receiving a tongue 32 (see FIG. 5) of the first magnetic shield element 13a. The tongue 32 connects the first magnetic shield element 13a to the cover part 2 and thus produces an electrical connection between the first shield element 13a and thus to the reference potential of the vehicle.

[0132] Cylindrical protrusions 19 with the threaded portion 5 are also shown. The first and the second membrane element 23, 25 are also shown. Threaded portions 27 in the cover part 2 which allow the base part 3 to be screwed to the cover part 2 are also shown. The groove 15 of the lip-and-groove connection surrounding the printed circuit boards 10a, 10b and a central portion of the cover part 2 is also shown.

[0133] A receptacle groove 37 for receiving a ribbon cable 36 is also shown. The ribbon cable 36 produces a data and signal connection between components of the first printed circuit board 10a and components of the second printed circuit board 10b. The ribbon cable 36 can be secured in the receptacle groove 37 by adhesive elements. Here, it is possible that the adhesive elements are provided by thermally conductive pads 18 (see FIG. 1).

[0134] Heat conduction pipes 28 are also shown, wherein the heat conduction pipes 28 extend from the second printed circuit board 10b into the central region of the cover part 2. In particular, the heat conduction pipes 28 extend from the second printed circuit board 10b into a region beneath the cooling bars 21 (see FIG. 2 and FIG. 3). The heat conduction pipes 28 enable a transmission of thermal energy from the second printed circuit board 10b, in particular from heat-generating components of the second printed circuit board 10b, for example power electronic components, into the central region. This in turn enables the distribution of thermal energy within the receiving device 1, which advantageously reduces the thermal loading of the second printed circuit board 10b and components thereof.

[0135] The heat conduction pipes can be arranged in receptacle grooves of the cover part 2, in particular in receptacle grooves in inner wall portions of the cover part 2.

[0136] FIG. 5 shows a schematic plan view of a base part 3. The through-holes 4 and further through-hole 29 for providing a screw connection between the base part 3 and the cover part 2 are shown. The through-holes 8a for providing a screw connection of the receiving device 1 to the vehicle are also shown. The lip 16 (see also FIG. 6) of the lip-and-groove connection is also shown. Dashed lines show the magnetic shield elements 13a, 13b.

[0137] Ribs 30, which protrude from the upper side of the base part 3, are also shown. These ribs 30 comprise a receptacle region for the winding structure 12 and for the ferrite bars 17 (see FIG. 1) and therefore define the receptacle region. The protruding ribs also increase the mechanical stability of the base part 3.

[0138] The protruding ribs 30 are arranged in a central region of the base part 3, in particular in a region between the volumes above the magnetic shield elements 13a, 13b.

[0139] Cylindrical protrusions 31 are also shown on the upper side of the base part 3. These protrusions 31 are arranged in the receptacle regions for the ferrite bars 17. For the sake of clarity, only two cylindrical protrusions 31 have been provided with a reference sign. These cylindrical protrusions 31 serve as spacer elements in order to provide a desired spacing between the upper side of the base part 3 and the underside of a ferrite bar 17.

[0140] A tongue 32 is also shown, which electrically connects the first magnetic shield element 13a to the cover part 2. A tongue 33 which connects the second magnetic shield element 13 to the cover part 2 is also shown.

[0141] FIG. 6 shows a schematic longitudinal section through a base part 3. The groove of the lip-and-groove connection between the base part 3 and the cover part 2 is shown. The second magnetic shield element 13b with the tongue 33 is also shown.

[0142] The winding structure 12 is also shown, wherein the winding structure 12 is provided by a double-D winding structure as explained previously. Ferrite bars 17 are also shown, wherein lower ferrite bars 17a are arranged beneath an upper ferrite bar 17b. The arrangement of the ferrite bars 17a, 17b provides a recess 34 for receiving a central portion of the winding structure 12.

[0143] An antenna element 35, which is provided by an antenna winding structure, which is wound around one of the lower ferrite bars 17a, is also shown. The antenna element 35 can be used to produce a wireless signal connection between components of the first printed circuit board 10a and a primary unit.

[0144] FIG. 7 shows a detailed view from beneath of a cover part 2 with a threaded portion 27 and a through-opening 8b. A groove 15 of a lip-and-groove connection with a sealing element 38 arranged therein is also shown. Along its course, the sealing element has protrusions 39 on an outer surface. The protrusions 39 protrude in the direction of the side walls of the groove 15 from a central portion of the sealing element 38. Here it is shown that a protrusion 39 that protrudes in the direction of a first side wall of the groove 15 and a protrusion 39 that protrudes in the direction of a second side wall of the groove 15 opposite the first side wall are arranged along the course of the central portion of the sealing element 38 in the same sub-portion of the sealing element 38. The sealing element 38 thus has sub-portions along the course of the central portion of the sealing element 38, in which sub-portions protrusions 39 protrude towards both side walls of the groove 15.

[0145] These protrusions 39 are used to centre the sealing element 38 in the groove 15. It is also shown that a spatial density of protrusions 39 in a curved portion of the sealing element 38 is greater than a spatial density in a straight portion of the sealing element 38.

[0146] FIG. 8 shows a detailed cross-section through a closed housing outside a plug receptacle region. The cover part 2 and the base part 3 are shown. The cover part 2 has a groove 15 of a lip-and-groove connection, which groove is also used to receive a sealing element 38 with protrusions 39 on the outer side. The rib that forms the lip 16 of the lip-and-groove connection is also shown, wherein the rib is formed by the base part 3.

[0147] FIG. 9 shows a schematic side view of a sealing element 38. It is shown that the sealing element 38 forms a through-opening 40. For example, the first plug 14a (see FIG. 1, for example) can extend through this through-opening, so as to be guided out from the sealed internal volume on the outer side.

[0148] FIG. 10 shows a detailed view from beneath of a cover part 2 with a threaded portion 27 and a through-opening 8b in a further embodiment. A groove 15 of a lip-and-groove connection with a sealing element 38 arranged therein is also shown. Along its course, the sealing element has protrusions 39 on an outer surface. In contrast to the embodiment shown in FIG. 7, only curved portions, that is to say non-straight portions, of the course of the central portion of the sealing element 38 have sub-portions in which protrusions 39 protrude towards both side walls of the groove 15. In uncurved, that is to say straight portions of the course of the central portion, there are arranged protrusions 39, which protrude towards the first side wall of the groove 15 along the course of the sealing element 38 offset in relation to protrusions 39 protruding towards the second side wall of the groove 15. In particular, a protrusion 39 in such an uncurved portion in a first sub-region can protrude towards a first side wall of the groove 15, wherein no protrusion 39 in this first sub-portion protrudes towards the second side wall. Furthermore, in a further sub-portion along the course, a protrusion 39 can protrude towards the second side wall, wherein no protrusion 39 towards the first side wall protrudes in this further sub-portion. In other words, the protrusions 39 protruding towards different side walls of the groove 15 are arranged alternately to one another in uncurved portions of the central portion of the sealing element 38 along its course. Such an embodiment advantageously hinders a tilting of the sealing element 38 in the groove 15.

[0149] FIG. 11 shows a detailed cross-section through a closed housing outside a plug receptacle region. The cover part 2 and the base part 3 are shown. The cover part 2 has a groove 15 of a lip-and-groove connection, which is also used to receive a sealing element 38 having protrusions 39 on the outer side. In contrast to the embodiment shown in FIG. 9, the sealing element 38 has only protrusions that protrude in the direction of side walls of the groove 15. On an underside of the sealing element 38, this has a double lip portion or forms same, wherein, as a result of the double lip portion, two contact portions of the sealing element 38 with a base surface of the groove 15 are provided. The underside of the sealing element 38 can denote here the side that in the assembled state contacts the base surface of the groove 15. On an upper side of the sealing element 38, this has a single lip portion or forms same, wherein only one contact portion with the base part 3 is provided by the single lip portion. The upper side of the sealing element 38 can denote the side that contacts the base part 3 in the assembled state.

[0150] FIG. 12 shows a perspective view of an edge portion of a base part 3. In the edge portion, the base part 3 has a rib 16, wherein the rib 16, along its course, has a height that changes above an upper side of the base part 3. Here, it is shown that the height changes with a ramp-like profile. In particular, the rib 16 transitions along its course into a groove-free and rib-free region, wherein this is formed by being cut out in the region of the upper side of the base part 3 and has a height above the upper side of zero. This region transitions again along its course into a rib 16. The cut-outs are formed here by indentations 41 in the region of the upper side. This groove-free and rib-free region with a height of zero above the upper side can be arranged in particular in a plug receptacle region of the base part 3.

[0151] A first plug 14a is also shown. The first plug 14a here forms grooves 42 for receiving a sealing element 38 not shown in FIG. 12. The first plug 14a can extend in particular through a through-opening 40 of the sealing element 38 shown in FIG. 9, wherein the portions of the sealing element 38 which surround the through-opening are arranged in the grooves 42.

[0152] In the portions in which the rib 16 does not have the maximum height above the upper side of the base part 3, the sealing element 38 cannot be pressed or cannot be pressed fully by the rib 16 into a corresponding groove 15 in the cover part 2. It is thus possible that in such portions the sealing element 38 protrudes beyond upper edges of the groove 15 or protrudes out from the groove 15.

[0153] FIG. 13 shows a cross-section through a closed housing in a plug receptacle region. A base part 3 and a cover part 2 are shown. A first plug 14a, which has or forms the grooves 42 for receiving a sealing element 38, is also shown. Here, the first plug 14a extends through a through-opening 40 in the sealing element 38 shown in FIG. 9, wherein the portions of the sealing element 38 which surround the through-opening 40 are arranged in the grooves 42. A groove-free and rib-free region of the base part is shown, into which the rib 16 transitions along its course and transitions back along its course into a rib 16. This region has cut-outs formed by indentations 41 in the region of the upper side of the base part 3.

[0154] It is also shown that the cover part forms a rib 43, which in the closed state of the housing is received by a groove 42 of the first plug 14a. The cover part 2, in addition to the groove 15 shown for example in FIG. 8, can thus form the rib 43. It is possible that the cover part 2 forms the rib 43 only in the plug receptacle region. In the other regions, the cover part 2 can form the groove 15. In particular, the groove 15 can transition along its course into the rib 43. The rib 43 can also transition along its course into a groove 15.

[0155] The embodiment shown in FIG. 12 and FIG. 13 makes it possible to reliably receive the first plug 14a with minimal overall height of the housing in the closed state. In particular, it is ensured that the first plug 14a can extend into the housing, wherein the internal volume, in the plug receptacle region, is also reliably sealed with respect to the external volume.

LIST OF REFERENCE SIGNS

[0156] 1 receiving device

[0157] 2 cover part

[0158] 3 base part

[0159] 4 through-opening

[0160] 5 threaded portion

[0161] 6 internal volume

[0162] 7 side walls

[0163] 8a, 8b through-opening

[0164] 9a, 9b receptacle regions

[0165] 10a, 10b printed circuit board

[0166] 11 screw

[0167] 12 winding structure

[0168] 13a, 13b magnetic shield element

[0169] 14a, 14b plug

[0170] 15 groove

[0171] 16 rib

[0172] 17 ferrite bar

[0173] 17a, 17b ferrite bar

[0174] 18 thermally conductive pad

[0175] 19 cylindrical protrusion

[0176] 20 conical protrusion

[0177] 21 cooling bar

[0178] 22 recess

[0179] 23 first membrane element

[0180] 24 channel

[0181] 25 second membrane element

[0182] 26 groove

[0183] 27 threaded portion

[0184] 28 heat conduction pipe

[0185] 29 through-opening

[0186] 30 rib

[0187] 31 cylindrical protrusion

[0188] 32 tongue

[0189] 33 tongue

[0190] 34 recess

[0191] 35 antenna element

[0192] 36 ribbon cable

[0193] 37 receptacle groove

[0194] 38 sealing element

[0195] 39 protrusion

[0196] 40 opening

[0197] 41 indentation

[0198] 42 groove

[0199] 43 rib