Motor arrangement for driving a sliding roof or a roller blind of a vehicle

Abstract

A motor device (10) for driving a sliding roof or a roller blind of a vehicle, comprising: a rotor device (20) comprising a plurality of magnets (22) and a rotor shaft (24); a stator device (30) having a core (31) comprising a plurality of stator teeth (32) projecting towards the rotor device, a plurality of windings (33) provided to the stator teeth, and respective terminals (34) provided at each end of the windings; a control device (40) configured to drive the rotor device in rotation with respect to the stator device by energizing the windings in a controlled manner via the respective terminals; and a stator housing (50) formed of a metal or a plastic material provided with a conductive layer. The stator device (30) is entirely housed within the stator housing (50), wherein the control device (40) comprises a first portion (41) also housed within the stator housing (50) and a second portion (42) extending outside the stator housing (50).

Description

Technical Field

[0001] This utility model relates to an electric motor device for driving a sliding roof or roller blind of a vehicle. Background Technology

[0002] Brushless motors, such as BLDC (brushless direct current) or PMSM (permanent magnet synchronous) motors, are increasingly used as electric motors to drive various components of vehicles, especially suitable for important applications such as sliding roofs and roller blinds. Compared to traditional brushed DC motors and other alternatives, these motors have several advantages. For example, PMSM motors have fewer consumable parts than brushed DC motors, meaning they can operate for extended periods without maintenance. Furthermore, PMSM motors are typically highly efficient because they have no voltage drop or energy loss, thus reducing battery consumption, which is crucial for both traditional gasoline-powered vehicles and electric vehicles (EVs).

[0003] Furthermore, the PMSM motor is equipped with a control unit that precisely controls speed, torque, and position. This precision is especially important for sliding roofs, where smooth operation and accurate positioning are key to user satisfaction and safety. Modern vehicles are increasingly integrated with electronic systems, and the PMSM motor, due to its controllability and ease of integration with electronic control units (ECUs) and sensors, is well-suited to be part of such systems.

[0004] Furthermore, PMSM motors produce less noise compared to brushed motors, a significant advantage in the increasingly noise-driven automotive environment. In addition, they generate less electromagnetic interference (EMI), reducing interference with the vehicle's electronic systems. Moreover, PMSM motors are often more compact and lightweight without sacrificing performance. This characteristic is highly beneficial in automotive applications, as saving space and not significantly increasing vehicle weight are important considerations.

[0005] Typically, a PMSM motor may include a stator and a rotor assembly, both housed together in a common housing with corresponding control units. The stator assembly includes a stator core, stator teeth, and windings wound around the stator teeth. The windings are energized under the appropriate control of the control unit to drive the rotor assembly. The control unit is usually configured to be offset from the movable parts of the rotor assembly to avoid structural interference with the outwardly extending rotor shaft, which engages with a gear mechanism through which rotational torque is transmitted to the corresponding driven components.

[0006] In known stator assembly concepts for brushless DC (BLDC or PMSM) motors, the stator assembly is not entirely housed within the stator housing of the motor assembly. Typically, the winding ends representing the U, V, and W phases are exposed outside the stator housing and then covered by plastic terminal supports. Furthermore, the U, V, and W terminals may include terminals with additional lengths for connection to control and power supply units. These protruding terminals are typically covered only by plastic components of the gear frame. These winding ends and protruding terminals result in higher electromagnetic radiation, leading to higher electromagnetic compatibility (EMC) levels in specific frequency regions. Therefore, additional metallic shielding is required to suppress this radiation, and this shielding is typically located outside the stator housing and / or the plastic frame of the motor assembly.

[0007] Existing stator concepts may involve additional components such as protruding terminals, terminal supports, and additional metal shielding, thus increasing costs (bill of materials) and requiring additional process steps, thereby increasing workload and cycle time. Furthermore, the additional metal shielding and protruding terminals, as separate components, may affect the vibration characteristics of the entire unit, resulting in additional noise during operation or pre-vibration verification testing.

[0008] US Patent 12,062,949B2 describes a stator housing in which a printed circuit board (PCB) is held on a bracket in addition to the stator assembly. Both the stator and PCB are completely housed within the stator housing. The PCB is directly connected to the conductive housing via spring elements. This satisfies EMC shielding requirements, and the PCB and motor windings are in direct contact, eliminating the need for cables to exit the housing. However, connectors for power supplies, etc., are located at the top of the stator housing, which may result in a less space-efficient motor, and control components unrelated to EMC shielding are also included in the stator housing, leading to an unnecessarily increased size. For this reason alone, the motor assembly proposed in US'949 appears unsuitable for vehicle applications where installation space is critical.

[0009] Furthermore, the electrical contact between the PCB and the stator housing is achieved via press-fit spring contacts pressed onto the PCB. When the PCB is inserted into the housing, the spring contacts are subsequently pressed against the housing. Moreover, the PCB is inserted into the stator housing before the stator and rotor assemblies, which is disadvantageous in terms of process efficiency and the method of installing the most vulnerable components in the later stages of assembly.

[0010] European patent EP3631953B1 discloses a stator housing in which a controller with a PCB is additionally arranged. Utility Model Content

[0011] The purpose of this invention is to provide an electric motor device for driving vehicle components that improves upon known stator concepts by reducing electromagnetic and acoustic radiation, and also allows for miniaturization and reduces manufacturing and additional component costs.

[0012] According to aspects and embodiments of the present invention, an electric motor device for driving a sliding roof or roller blind of a vehicle is provided, comprising: a rotor device including a plurality of magnets and a rotor shaft; a stator device having a core including a plurality of stator teeth projecting toward the rotor device, a plurality of windings disposed on the stator teeth, and corresponding terminals disposed at corresponding ends of the windings; a control device configured to drive the rotor device to rotate relative to the stator device by controllingly energizing the windings via the corresponding terminals; and a stator housing formed of metal or a plastic material having a conductive layer. The stator device is completely housed within the stator housing, and the control device includes a first portion also housed within the stator housing and a second portion extending beyond the stator housing.

[0013] According to a new stator concept associated with the claimed motor assembly, only a portion of the control unit, such as the corresponding printed circuit board (PCB), is completely or partially enclosed by the stator housing. According to one embodiment, circuit components responsible for strong EMC fluctuations, particularly switches, voltage converters, voltage or current regulators, can be housed within the portion of the control unit housed within the stator housing (PCB portion). However, for miniaturization, the remaining portion or part of the control unit or PCB can protrude from the stator housing, for example, through an opening or interruption. Therefore, the size of the stator housing can remain relatively small.

[0014] According to one embodiment, the motor device is a brushless DC (BLDC) motor and / or a permanent magnet synchronous (PMSM) motor.

[0015] According to one embodiment, the control device is preferably an electronic control unit (ECU) that can be connected to an external control module of the vehicle via a communication line, such as a digital bus, preferably a LIN bus or a CAN bus.

[0016] According to one embodiment, the control device includes a printed circuit board on which a set of switches are mounted, the switches being electrically connected to corresponding terminals and configured to energize the winding via the terminals with a phase pulse of electrical power.

[0017] According to one embodiment, the printed circuit board has: a first segment associated with a first portion of the control device, the first segment extending within the stator housing; and a second segment associated with a second portion of the control device, the second segment extending outside the stator housing, wherein the printed circuit board extends through an opening disposed in the stator housing, the opening being configured to connect the first segment and the second segment.

[0018] According to one embodiment, the set of switches is configured to be mounted to a first segment of the printed circuit board, preferably together with other switches associated with voltage converters and / or current or voltage regulators and / or preferably together with discrete electrical components such as capacitors and / or inductors, mounted to the first segment of the printed circuit board.

[0019] According to one embodiment, the connector for electrical connection in the vehicle is located at the end of the control unit or printed circuit board outside the stator housing.

[0020] Preferably, electrical components and devices are mounted on both sides of the printed circuit board, allowing for a compact design. Regarding the aforementioned known concepts, the printed circuit board can be repositioned from, for example, a gearbox housing or frame to a stator housing to improve EMC shielding. Simultaneously, the overall size of the motor assembly can remain relatively flat, allowing connection via a side plug (a connector located on the side of the stator housing).

[0021] Furthermore, the electrical contact between the control device or printed circuit board and the stator housing is more efficient than, for example, described in the prior US'949 patent. Currently, according to one embodiment, the contact can be made after the printed circuit board is inserted into the housing. For example, the contact can be established after the printed circuit board is inserted into the housing by soldering corner pieces as surface mount devices (SMDs) between the printed circuit board and the housing, for example, using a so-called reflow soldering process. However, pre-assembly of SMD corner pieces with the printed circuit board is also possible, or may even have advantages, because the SMD components can be mounted in the same process as soldering other devices to the printed circuit board.

[0022] Furthermore, the stator housing of this invention allows the stator assembly and rotor assembly to be inserted into the stator housing, and then the printed circuit board is placed on top of it, thereby connecting it to the housing.

[0023] Furthermore, according to one embodiment of the present invention, the bracket assembly on which the printed circuit board is mounted and press-fitted into the stator housing is made of two independent bracket elements, which increases the durability and accuracy of the installation. At the same time, damage to the control device or the printed circuit board can be avoided. One bracket element can be press-fitted into the stator housing, while the other bracket element, together with the printed circuit board mounted thereon, is mounted on the press-fitted portion.

[0024] Some advantages can be summarized as follows: According to an embodiment, the electromagnetic circuit (stator) and ECU can be fully (stator assembly) or partially (control device, printed circuit board, PCB) integrated in the metal housing of the stator assembly.

[0025] According to another embodiment, the protruding phase terminals of the previous concept can be avoided. The short phase terminals can be directly connected to a nearby printed circuit board.

[0026] According to another embodiment, a shorter grounding path can be achieved compared to the previous concept: the grounding terminal can now be directly connected from the printed circuit board to the metal housing via a corner piece.

[0027] Regarding electromagnetic shielding, the stator's metal casing acts as an effective "shield" for stator electromagnetic radiation, thereby reducing EMI radiated into the surrounding environment. By completely enclosing the generated magnetic field within the stator casing, electromagnetic radiation that could interfere with nearby electronic equipment is limited, thus reducing radiated emissions. Furthermore, the stator casing prevents the escape of high-frequency electromagnetic noise generated by the stator's switching currents (power electronics / ECU components).

[0028] The assembly process is simplified because it eliminates the need for terminal blocks and protruding phase terminals. Previously, assembling three-phase terminals in a terminal block was a complex process.

[0029] Furthermore, since the control unit, ECU, or PCB is integrated within the stator housing, a cover is not required. The new design eliminates the need for a separate assembly process.

[0030] Since the stator assembly is now fully inserted into the metal stator housing, no additional metal shielding is required to achieve EMC levels.

[0031] Regarding noise, since no additional metal shielding is needed, this ultimately reduces additional noise and vibration. Therefore, fewer parts and less accumulated assembly tolerances directly translate into reduced noise.

[0032] Other advantages and embodiments become clear from the dependent claims. Attached Figure Description

[0033] Figure 1 A lateral cross-sectional perspective view of a stator assembly, according to one embodiment, is shown, fully housed within a stator housing made of metal. Figure 2 An embodiment is shown including Figure 1 A schematic perspective view of the stator motor assembly (PMSM motor); Figure 3An embodiment is shown including Figure 1 A perspective view of the cross-sectional profile of the stator motor assembly (PMSM motor); Figure 4 An embodiment is shown including Figure 1 A perspective view of the stator motor assembly (PMSM motor); Figure 5 The schematic perspective view shows a vehicle with a sliding roof. Detailed Implementation

[0034] In the following description of preferred exemplary embodiments, it should be considered that the disclosure of various aspects of the present invention is not limited to the details of the construction and component arrangement shown in the following description and drawings. Exemplary embodiments may be implemented or performed in various ways. Furthermore, it should be considered that the terminology and terminology used herein are for descriptive purposes only and should not be construed as limiting by those skilled in the art. Additionally, in the following description, the same reference numerals in the various exemplary embodiments or drawings denote the same or similar features or objects, and therefore, repeated detailed descriptions of them are omitted in some cases to maintain the brevity and clarity of the illustrations.

[0035] Figure 5 A schematic diagram of the roof portion of a vehicle 100, which can be integrated according to an embodiment of this invention, is shown. The vehicle 100 includes a windshield 110 and a rear window 120 in the roof portion defined by frame member 130. An opening 2 is formed in the roof portion, which can be opened or closed by moving a sliding roof 1 (e.g., a sunroof), which is an example of a movable component. For moving or actuating the sliding roof 1, an electric motor 10 is provided at a suitable location in the roof portion of the vehicle 100. Figure 5 In the schematic diagram, the position of the electric motor unit within the roof section is arbitrarily selected and can be selected in any other position as needed. Furthermore, the sliding roof 1 can be a roller blind or any other movable component, such as a side window in a door of vehicle 100, or an electric tailgate or door of vehicle 100, or sensor and / or camera components of a roof sensor module that forms part of a system supporting autonomous driving.

[0036] Details of the electric motor device according to one embodiment are as follows: Figure 1-4 As shown in the figure. The motor device in this embodiment is a brushless PMSM motor.

[0037] Figure 1A side cross-sectional view of a stator assembly 30, fully housed in a stator housing 50 made of a metal such as aluminum or steel, is shown according to this embodiment. The stator housing 50 has an integral tubular shape. The stator assembly 30 includes a stator core 31 and stator teeth 32 extending from the stator core 31 toward an axis R of the rotor shaft 24. Figure 1 (Not shown in the image). The stator teeth 32 are separated from each other by a gap 36 in the orientation direction about the axis R. The stator core 31 (together with the integrally formed stator teeth 32) is formed in a known manner as a stack of laminated metal sheets, such as... Figure 1 As shown. Multiple windings 33 are wound around the stator teeth 32, and their ends ( Figure 1 (Not specifically shown) is connected to terminal 34. A total of three terminals 34 (U, V, and W) are formed, two of which are connected to... Figure 1 As can be seen, in this embodiment, six stator teeth 32 are formed, and every two windings 33 are connected in series and connected to one of the terminals 34. Other stator configurations are also possible.

[0038] Note that in Figure 1 The corresponding rotor assembly 20 and the control device 40 configured to energize the winding 33 via the corresponding terminal 34 are omitted. A bearing 53 is arranged in the bottom portion of the stator housing 50 forming the closed end of the stator housing, which rotatably supports the rotor shaft 24 of the rotor assembly 20. Figure 1 (Not shown in the image).

[0039] from Figure 1 As can be seen, the stator assembly 30 is completely housed within the stator housing 50, thus shielding against electromagnetic radiation generated by the operation of the circuitry associated with the stator assembly 30. More specifically, the length Ls of the stator assembly 30, measured along the axis R of the rotor shaft 24, is less than the length Lh of the stator housing 50, measured along the axis R of the rotor shaft 24. The upper end of the stator assembly 30 opposite the bearing 53 is formed by a terminal 34. In the assembled state of the stator assembly 30 and the stator housing 50, the terminal 34 is positioned within the stator housing 50 and below the open upper end of the stator housing 50. Note that the open upper end of the stator housing 50 (see...) Figure 2 The upper edge 57 shown will be closed when the motor assembly 10 is installed onto the outer part provided as a cover.

[0040] refer to Figure 2 and Figure 4 It shows different perspective views of the motor assembly 10, with the stator housing 50 having an interruption or opening 51 extending from its upper end (upper edge 57). A control device 40, essentially provided by a printed circuit board 60, extends through the opening 51. The printed circuit board 60 includes electronic components such as a switch 64 (see...). Figure 3Electronic components 65, including inductors, resistors, capacitors, and / or integrated components such as IC chips (e.g., one or more microcontrollers), are mounted on the substrate of the printed circuit board 60. In this embodiment, electronic components may be mounted on both sides of the substrate, making some components invisible in the figure. For example, switches (power switches, IGBTs, or power MOSFETs) 64 that drive multiple windings 33 are positioned on the lower surface of the printed circuit board 60 in an orientation that allows them to be mounted within the stator housing 50.

[0041] The printed circuit board 60 has a first section 61 extending into the stator housing 50 on one side of the opening 51 and a second section 62 extending out of the stator housing 50 on one side of the opening 51.

[0042] like Figure 3 As shown in more detail, a cross-sectional view of the stator housing 50 and stator assembly 30 is presented, this time together with the rotor assembly 20 (including rotor shaft 24 and rotor magnet 22) and control unit 40. The printed circuit board 60 extends substantially perpendicular to the axis R of the rotor shaft 24. A first segment 61 of the printed circuit board 60 thus represents a first portion 41 of the control unit 40, including electronic components located within the stator housing 50, and a second segment 62 of the printed circuit board 60 represents a second portion 42 of the control unit 40, including electronic components located outside the stator housing 50.

[0043] The printed circuit board 60 has a notch 66 in its first section 61 through which the rotor shaft 24 of the rotor assembly 20 extends. This configuration enables a compact design for the entire PMSM motor, and the first section 61 of the printed circuit board 60 is particularly close to the circuit extensions formed by the stator assembly 50, or more specifically, close to the terminals 34, as shown in... Figure 3 The cross-sectional view shows one of the terminals 34. As an advantageous result, the terminal 34 can be directly connected to the printed circuit board 60, and the metal extension for such a connection is no longer required, which would traditionally lead to EMC problems, or traditionally require metal shielding in addition to the housing.

[0044] Furthermore, electronic components (switches 64) that contribute to electromagnetic radiation can be mounted in the first section 61 of the printed circuit board 60 so that they are located within the stator housing 50. Therefore, electromagnetic interference is further reduced.

[0045] The second segment 62 of the printed circuit board 60, or the second portion 42 of the entire control device 40, is housed within an extended motor housing 58, which connects to the stator housing 50 at an opening 51. The extended motor housing 58 may be made of plastic or metal and has a connector assembly 80 configured to allow the control device 40, or more specifically, its microcontroller (not shown), to establish a plug connection with an external power supply and communication lines for exchanging data between the control device and an external control module. The communication lines may be communication buses such as LIN or CAN. In this specific embodiment, the axis C of the plug connection is perpendicular to the plane of the extended printed circuit board 60, to which the communication and power lines are connected. As a result, the axis R of the rotor shaft 24 and the axis C of the connector assembly 80 are parallel to each other. The advantage of this configuration is that the mounting direction from the stator housing 50 to the external device and the mounting direction of the cables including the communication and power lines are approximately the same, thus requiring the same amount of installation space, resulting in an overall reduction in space requirements.

[0046] The stator assembly 30 has a winding 33 wound on the stator teeth 32, or more precisely, wound on a winding frame formed by the upper winding frame portion 37 and the lower winding frame portion 38. Thus, the upper winding frame portion 37 is integrally formed with the extended motor housing 58.

[0047] In this specific embodiment, the upper edge 57 of the stator housing 50 and the upper edge 59 of the extended motor housing 58 together define a plane that allows the internal space to be sealed from the outside after the motor assembly 10 is mounted to an external device (not shown).

[0048] Furthermore, the corner piece 74 is provided as an SMD component and mounted on a first segment 61 of the printed circuit board 60 within the stator housing 50. Preferably, the corner piece 74 is soldered to the printed circuit board 60 using a reflow soldering process. The corner piece 74 is arranged on the printed circuit board 60 to contact the inner wall 55 of the stator housing 50, thereby establishing an electrical connection between the stator housing 50 and the circuit including the switch 64 to shield electromagnetic radiation emitted during operation of the circuit.

[0049] An assembly process of one embodiment is described below: In the first step, a stator assembly 30 is provided. Next, the upper winding frame portion 37 and the lower winding frame portion 38, on which the extended motor housing 58 is formed, are attached to the stator assembly 30. Next, the winding 33 is wound around the assembled winding frame portions 37, 38. Furthermore, the stator assembly thus assembled is inserted into the stator housing 50. The rotor shaft bearing 53 may optionally be added to the stator housing previously. The stator assembly can be held in the stator housing 50 by a press-fit connection or a fixing device. Then, the rotor assembly 20 is inserted through / inside the stator assembly 30, and the printed circuit board 60 is attached to the stator housing 50 and the extended motor housing 58. Thus, the terminals 34 of the stator assembly 30 pass through through holes (not shown) formed in the PCB and are electrically connected to the circuitry formed on the PCB by soldering or, preferably, a press-fit connection. Furthermore, an electrical connection is established between the contacts on the PCB and the wires formed in the connector assembly. PCB 80 is also held by a retaining portion 56, which is formed as a protrusion on the side wall of the extended motor housing 58, such as Figure 2 and Figure 4 As shown. Furthermore, the corner bracket 74 is fixed to the stator housing 50 and connected to a grounding terminal formed on the PCB 80. This corner bracket 74 also fixes the position of the PCB 80 relative to the stator housing. Finally, the motor assembly 10 thus assembled can be attached to the wall of an external device (not shown) and connected to a gear assembly (not shown).

[0050] List of reference numerals 1. Sliding roof 2 Opening 10. Electric motor assembly 20 Rotor assembly 22 Magnets 24 Rotor shaft 30 Stator assembly 31 Stator Core 32 stator teeth 33 windings 34 terminals The gap between 36 teeth 37. Upper winding frame section 38 Lower winding frame section 40 Control device 41 Part One 42 Part Two 50 Stator Housing 51. Opening (Stator housing) 53 Rotor shaft bearing 55 Inner Wall 56. Maintain part 57. Upper edge of stator housing 58 Extended motor housing 59. The upper edge of the extended motor housing 60 Printed Circuit Board (PCB) 61 First Section 62 Second Section 64 switches 65 capacitor 66. Notches in PCBs 70 bracket assembly 71 First support element 72 Second support element 74 corner pieces 80 Connector Assembly 100 vehicles 110 Windshield 120 rear window 130 Frame Components C is the axis of the plug connection defined by the connector assembly. R is the axis of rotation of the rotor shaft (or the axis of rotation of the rotor).

Claims

1. An electric motor device (10) for driving a sliding roof or roller blind of a vehicle, characterized in that, The electric motor assembly (10) includes: The rotor assembly (20) includes a plurality of magnets (22) and a rotor shaft (24). The stator assembly (30) has a core (31) including a plurality of stator teeth (32) protruding toward the rotor assembly (20), a plurality of windings (33) disposed to the stator teeth (32), and corresponding terminals (34) disposed at the respective ends of the windings (33). A control device (40) is configured to drive the rotor device (20) to rotate relative to the stator device (30) by energizing the winding (33) in a controlled manner via corresponding terminals (34). Stator housing (50) is formed of metal or plastic material with a conductive layer; The stator assembly (30) is completely housed within the stator housing (50), and the control device (40) includes a first portion (41) also housed within the stator housing (50) and a second portion (42) extending beyond the stator housing (50).

2. The electric motor device (10) according to claim 1, wherein, The motor unit (10) is a brushless DC BLDC motor and / or a permanent magnet synchronous PMSM motor.

3. The electric motor device (10) according to claim 1 or 2, wherein, The control device (40) is an electronic control unit (ECU) that can be connected to or is already connected to an external control module of the vehicle.

4. The electric motor device (10) according to any one of claims 1 to 3, wherein, The control device (40) includes a printed circuit board (60) on which a set of switches (64) are mounted, the switches being electrically connected to corresponding terminals (34) and configured to energize the winding (33) via the terminals (34) with a phase pulse of electrical power.

5. The electric motor device (10) according to claim 4, wherein, The printed circuit board (60) has: a first section (61) associated with a first portion (41) of the control device (40), the first section extending within the stator housing (50); And a second section (62) associated with a second part (42) of the control device (40), the second section extending outside the stator housing (50), wherein the printed circuit board (60) extends through an opening (51) provided in the stator housing (50), the opening (51) being configured to connect the first section (61) and the second section (62).

6. The electric motor device (10) according to claim 5, wherein, The set of switches (64) is configured to be mounted on the first section (61) of the printed circuit board (60).

7. The electric motor device (10) according to claim 5 or 6, wherein, The printed circuit board (60) extends in a plane that is substantially perpendicular to the axis of the rotor shaft (24).

8. The electric motor device (10) according to claim 7, wherein, The printed circuit board (60) includes a notch (66) through which the rotor shaft (24) extends.

9. The electric motor device (10) according to any one of claims 4 to 8, wherein, The electric motor assembly also includes: A connector assembly (80) is configured to allow a plug connection to an external power source and a communication line for exchanging data between the control device (40) and an external control module.

10. The electric motor device (10) according to claim 9, wherein, The connector assembly (80) defines the axis of the plug connection, which is parallel to the axis of the rotor shaft (24) and is arranged outside the stator housing (50) in a lateral direction relative to the rotor shaft (24).

11. The electric motor device (10) according to any one of claims 4 to 10, wherein, The electric motor assembly also includes: An angle bracket (74), which is an SMD component, is mounted in the stator housing (50) within a first section (61) of the printed circuit board (60), wherein the angle bracket (74) is arranged on the printed circuit board (60) to contact the inner wall (55) of the stator housing (50), thereby establishing an electrical connection between the stator housing (50) and the circuit including the switch (64) to shield electromagnetic radiation emitted by the circuit during operation.

12. The electric motor device (10) according to claim 3, wherein, The electronic control unit (ECU) can be connected to or is already connected to the vehicle's external control module via a communication line.

13. The electric motor device (10) according to claim 12, wherein, The communication line is a digital bus.

14. The electric motor device (10) according to claim 13, wherein, The digital bus is either a LIN bus or a CAN bus.

15. The electric motor device (10) according to claim 6, wherein, The set of switches (64) is configured to be mounted, together with other switches associated with voltage converters and / or current or voltage regulators and / or together with discrete electrical components, to the first section (61) of the printed circuit board (60).

16. The electric motor device (10) according to claim 15, wherein, The discrete electrical components are capacitors (65) and / or inductors.

17. The electric motor device (10) according to claim 11, wherein, The corner piece (74) is soldered to the printed circuit board (60) using a reflow soldering process.

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