Motor controller, electric drive assembly and vehicle

Abstract

The application discloses a motor controller, an electric drive assembly and a vehicle. The motor controller comprises a box body, a cover plate arranged on the box body, and a plurality of protruding parts formed on a side of the cover plate away from the box body and protruding away from the cover plate. The plurality of protruding parts are arranged at intervals along a first direction and / or a second direction. The first direction is orthogonal to the second direction. Each protruding part is formed with a reflecting part on a side thereof facing the box body. The reflecting part is adapted to reflect electromagnetic waves. According to the motor controller, the reflecting part is arranged to reduce noise generated during operation, improve the comfort and experience of the driver and passengers.

Description

Technical Field

[0001] This application relates to the field of vehicles, and more particularly to an electric motor controller, an electric drive assembly, and a vehicle. Background Technology

[0002] In related technologies, pure electric vehicles, plug-in hybrid electric vehicles, hybrid electric vehicles, and range-extended electric vehicles all use the drive motor as a core component. As the central system for power transmission and conversion in new energy vehicles, the performance of the drive motor directly affects the vehicle's power output and operating efficiency. However, due to the complex electromagnetic environment inside the motor controller and the high-speed operation of electronic components, passengers can clearly feel high-frequency electromagnetic radiation noise originating from the motor controller. This noise not only disrupts the originally quiet and comfortable driving environment but also distracts the driver, reducing driving comfort and enjoyment. Utility Model Content

[0003] This application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of this application is to provide a motor controller that reduces noise generated during operation by incorporating a reflector, thereby improving the comfort and driving experience of the occupants.

[0004] This application also proposes an electric drive assembly having the aforementioned motor controller.

[0005] This application also proposes a vehicle having the above-mentioned electric drive assembly.

[0006] According to an embodiment of this application, a motor controller includes: a housing; a cover plate disposed on the housing, wherein a protrusion is formed on the side of the cover plate away from the housing, the protrusion being raised away from the cover plate, and there are multiple protrusions, which are spaced apart along a first direction and / or a second direction, the first direction being orthogonal to the second direction, and each protrusion having a reflective portion on the side facing the housing, the reflective portion being adapted to reflect electromagnetic waves.

[0007] According to an embodiment of this application, the motor controller has a housing and a cover plate installed on the housing. The cover plate has a protrusion that protrudes away from the housing. A reflective portion can be formed on the side of the protrusion facing the housing. The reflective portion can reflect electromagnetic waves, thereby reflecting the electromagnetic waves into the housing, causing the electromagnetic waves to be attenuated and absorbed inside, reducing the diffusion of electromagnetic waves to the outside, thereby reducing the propagation of electromagnetic noise and improving the comfort and enjoyment of the driver and passengers.

[0008] In some embodiments of this application, the reflective portion has a plurality of reflective units, each of the reflective units being arranged sequentially along the first direction and / or the second direction, each of the reflective units having a plurality of reflective surfaces, and each of the reflective surfaces being orthogonally arranged with its two adjacent reflective surfaces.

[0009] In some embodiments of this application, a reinforcing portion extending toward the housing is provided between two adjacent reflective portions.

[0010] In some embodiments of this application, one of the protrusions has a plurality of mounting grooves recessed toward the cover plate on the side away from the cover plate, and the plurality of mounting grooves are spaced apart along the first direction.

[0011] In some embodiments of this application, the height of the protrusion is d and satisfies: 3mm≤d≤7mm.

[0012] In some embodiments of this application, the outer periphery of the cover plate is provided with a first positioning part, the box body is provided with a second positioning part corresponding to and connected to the first positioning part, the outer periphery of the cover plate is provided with a first mounting hole, and the box body is provided with a second mounting hole corresponding to the first mounting hole; the motor controller further includes: a fastener, the fastener passing through the first mounting hole and the second mounting hole to connect the cover plate and the box body.

[0013] In some embodiments of this application, the cover plate is further provided with a third positioning part and a third mounting hole; the motor controller further includes: a three-phase wire cover plate, the three-phase wire cover plate is disposed on the side of the cover plate away from the box body, and the three-phase wire cover plate is provided with a fourth positioning part and a fourth mounting hole, the fourth positioning part is correspondingly disposed and connected to the third positioning part, and the fourth mounting hole is correspondingly disposed to the third mounting hole.

[0014] In some embodiments of this application, the cover plate is further provided with a mounting portion, the mounting portion having a through hole.

[0015] The electric drive assembly of an embodiment of this application is described below.

[0016] The electric drive assembly according to the embodiments of this application is provided with the motor controller of the above embodiments. Since the electric drive assembly of the embodiments of this application is provided with the motor controller of the above embodiments, the motor controller of the electric drive assembly has a housing and a cover plate installed on the housing. The cover plate has a protrusion that protrudes away from the cover plate. A reflective part can be formed on the side of the protrusion facing the housing. The reflective part can reflect electromagnetic waves, thereby reflecting the electromagnetic waves into the housing, so that the electromagnetic waves are attenuated and absorbed inside, reducing the diffusion of electromagnetic waves to the outside, thereby reducing the propagation of electromagnetic noise and improving the comfort and pleasure of the driver and passengers.

[0017] The vehicle of an embodiment of this application is described below.

[0018] The vehicle according to the embodiments of this application is equipped with the electric drive assembly of the above embodiments. Since the vehicle according to the embodiments of this application is equipped with the electric drive assembly of the above embodiments, the electric drive assembly of the vehicle has the above-mentioned motor controller. The motor controller has a housing and a cover plate installed on the housing. The cover plate has a protrusion that protrudes away from the cover plate. A reflective part can be formed on the side of the protrusion facing the housing. The reflective part can reflect electromagnetic waves, thereby reflecting the electromagnetic waves into the housing, so that the electromagnetic waves are attenuated and absorbed inside, reducing the spread of electromagnetic waves to the outside, thereby reducing the propagation of electromagnetic noise and improving the comfort and pleasure of the driver and passengers.

[0019] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0020] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0021] Figure 1 This is a schematic diagram of the structure of a motor controller according to an embodiment of this application;

[0022] Figure 2 yes Figure 1 Schematic diagram of the middle cover plate;

[0023] Figure 3 yes Figure 2 Schematic diagram of the cross section of AA;

[0024] Figure 4 yes Figure 1 Another structural diagram of the middle cover plate;

[0025] Figure 5 yes Figure 4 A magnified view of a portion of circle A in the center.

[0026] Figure label:

[0027] 10. Motor controller;

[0028] 11. Box body; 12. Cover plate; 121. Protrusion; 1211. Mounting groove;

[0029] 122. Reflecting part; 123. Reflecting unit; 1231. Reflecting surface; 124. Reinforcing part;

[0030] 125. First positioning part; 126. First mounting hole; 127. Third positioning part; 128. Third mounting hole;

[0031] 129. Mounting section; 1291. Through hole; 13. Three-phase line cover plate. Detailed Implementation

[0032] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0033] The following is for reference. Figures 1-5 The motor controller 10 according to an embodiment of the present application is described. The motor controller 10 includes a housing 11 and a cover plate 12.

[0034] A cover plate 12 is disposed on the box body 11. A protrusion 121 is formed on the side of the cover plate 12 away from the box body 11, protruding away from the cover plate 12. There are multiple protrusions 121, which are spaced apart along a first direction and / or a second direction. The first direction and the second direction are orthogonal. A reflective part 122 is formed on the side of each protrusion 121 facing the box body 11. The reflective part 122 is adapted to reflect electromagnetic waves.

[0035] Currently, pure electric vehicles, plug-in hybrid electric vehicles, hybrid electric vehicles, and range-extended electric vehicles all use the drive motor as a core component. As the central system for power transmission and conversion in new energy vehicles, the drive motor's performance directly affects the vehicle's power output and operating efficiency. However, due to the complex electromagnetic environment inside the motor controller and the high-speed operation of electronic components, passengers can clearly feel high-frequency electromagnetic radiation noise emanating from the motor controller. This noise not only disrupts the originally quiet and comfortable driving environment but also distracts the driver, reducing driving comfort and enjoyment.

[0036] In response, this application proposes a motor controller 10, which reduces noise generated during operation by providing a reflector 122, thereby improving the comfort and driving experience of the driver and passengers.

[0037] Specifically, such as Figures 1 to 3As shown, the motor controller 10 may include a housing 11 and a cover 12. The housing 11 may form an open cavity for installing electronic components. The cover 12 may be disposed at the housing 11 to close the cavity. Optionally, the cover 12 and the housing 11 may be detachably connected by screws or bolts, or the cover 12 and the housing 11 may be detachably connected by snap-fit ​​or plug-in. The cover 12 may be made of die-cast aluminum alloy.

[0038] A protrusion 121 may be formed on the side of the cover plate 12 away from the box body 11. The protrusion 121 may protrude in a direction away from the cover plate 12. The protrusion 121 may improve the overall structural strength of the cover plate 12. There may be multiple protrusions 121. By providing multiple protrusions 121, the structural strength of the cover plate 12 may be further improved. The multiple protrusions 121 may be spaced apart along a first direction, or the multiple protrusions 121 may be spaced apart along a second direction, or the multiple protrusions 121 may be spaced apart along the first direction and the second direction respectively. The first direction and the second direction are orthogonal.

[0039] Furthermore, each protrusion 121 can have a reflective portion 122 formed on the side facing the housing 11. The reflective portion 122 can reflect electromagnetic waves and control the propagation of high-frequency electromagnetic waves within the housing 11. The electromagnetic waves are reflected back into the housing 11 through the reflective portion 122, causing them to be reflected multiple times within the housing 11, thereby achieving attenuation and absorption of electromagnetic waves, effectively reducing electromagnetic interference, thus reducing the outward diffusion of high-frequency electromagnetic waves and the outward propagation of electromagnetic noise, and improving the driving experience for passengers.

[0040] In short, the motor controller 10 of this application embodiment has a housing 11 and a cover plate 12 installed on the housing 11. The cover plate 12 has a protrusion 121 that protrudes away from the cover plate 12. A reflective part 122 can be formed on the side of the protrusion 121 facing the housing 11. The reflective part 122 can reflect electromagnetic waves, thereby reflecting the electromagnetic waves into the housing 11, so that the electromagnetic waves are attenuated and absorbed inside, reducing the spread of electromagnetic waves to the outside, thereby reducing the propagation of electromagnetic noise and improving the comfort and pleasure of the driver and passengers.

[0041] like Figure 4 and Figure 5As shown, in some embodiments of this application, the reflector 122 may have multiple reflector units 123. The multiple reflector units 123 may be arranged sequentially along a first direction, or the multiple reflector units 123 may be arranged sequentially along a second direction, or the multiple reflector units 123 may be arranged sequentially along the first direction and the second direction. By providing multiple reflector units 123, the reflective surface area of ​​electromagnetic waves 1231 can be increased, and the outward diffusion of high-frequency electromagnetic waves can be reduced. Furthermore, each reflecting unit 123 can have multiple reflecting surfaces 1231, and each reflecting surface 1231 can be orthogonally arranged with its two adjacent reflecting surfaces 1231. In a specific embodiment, the number of reflecting surfaces 1231 can be three. According to the reflection distance, when an electromagnetic wave is incident on one of the surfaces, it will be reflected to another surface, then to a third surface, and finally reflected back along the incident direction. This arrangement can control the high-frequency electromagnetic waves to propagate inside the housing 11. The electromagnetic waves are reflected back into the housing 11, causing them to be reflected multiple times inside the housing 11 and eventually absorbed or attenuated, thereby effectively reducing electromagnetic interference, reducing the outward diffusion of high-frequency electromagnetic waves, and reducing the outward propagation of electromagnetic noise. In addition, the above structure can also increase the surface area of ​​the inner wall of the cover plate 12 and improve heat dissipation efficiency.

[0042] like Figures 3 to 5 As shown, in some embodiments of this application, a reinforcing part 124 may be provided between two adjacent reflective parts 122. The reinforcing part 124 may extend toward the box body 11. The reinforcing part 124 may further improve the structural strength of the cover plate 12, prevent the cover plate 12 from bending or deforming, thereby improving the reliability of the cover plate 12.

[0043] like Figure 2 As shown, in some embodiments of this application, a mounting groove 1211 can be formed on the side of one of the protrusions 121 away from the cover plate 12. The mounting groove 1211 can be recessed toward the cover plate 12. There can be multiple mounting grooves 1211, and the multiple mounting grooves 1211 can be spaced apart along a first direction. The recessed depth of the mounting groove 1211 can be any value between 0.2mm and 0.4mm. For example, the recessed depth of the mounting groove 1211 can be, but is not limited to, 0.2mm, 0.3mm, 0.4mm, etc. In a specific embodiment, there can be 4 mounting grooves 1211, and the mounting groove 1211 can be used to attach the traceability code, barcode, nameplate, and high voltage warning label of the motor controller 10.

[0044] In some embodiments of this application, the height of the protrusion 121 can be d, satisfying the relationship: 3mm≤d≤7mm. It can be understood that the height of the protrusion 121 can be any value between 3mm and 7mm. For example, the height of the protrusion 121 can be, but is not limited to, 3mm, 4mm, 5mm, 6mm, 7mm, etc. This setting can improve the structural strength of the protrusion 121, thereby improving the structural strength of the cover plate 12.

[0045] like Figure 2 and Figure 4 As shown, in some embodiments of this application, the outer periphery of the cover plate 12 may be provided with a first positioning part 125, and the box body 11 may be provided with a second positioning part. The first positioning part 125 may be correspondingly provided and connected to the second positioning part. Optionally, the first positioning part 125 may be one of a positioning post and a positioning hole, and the second positioning part may be the other of a positioning post and a positioning hole. The first positioning part 125 may be snapped into the second positioning part. The outer periphery of the cover plate 12 may be provided with a first mounting hole 126, and the box body 11 may be provided with a second mounting hole. The second mounting hole may be correspondingly provided with the first mounting hole 126. The motor controller 10 may also include a fastener, which may pass through the first mounting hole 126 and the second mounting hole to connect the cover plate 12 and the box body 11.

[0046] like Figure 2 and Figure 4 As shown, in some embodiments of this application, the cover plate 12 may also be provided with a third positioning part 127 and a third mounting hole 128. The motor controller 10 may also include a three-phase wire cover plate 13. The three-phase wire cover plate 13 may be provided on the side of the cover plate 12 away from the housing 11. The three-phase wire cover plate 13 may be provided with a fourth positioning part and a fourth mounting hole. The fourth positioning part may be correspondingly provided and connected to the third positioning part 127. Optionally, the third positioning part 127 may be one of a positioning post and a positioning hole, and the fourth positioning part may be the other of a positioning post and a positioning hole. The third positioning part 127 and the fourth positioning part may be snap-fit ​​connected. The fourth mounting hole may be correspondingly provided to the third mounting hole 128. Optionally, fasteners may be passed through the third mounting hole 128 and the fourth mounting hole to fix the three-phase wire cover plate 13 to the cover plate 12.

[0047] like Figure 2 and Figure 4 As shown, in some embodiments of this application, the cover plate 12 may also be provided with a mounting portion 129, the mounting portion 129 may be formed with a through hole 1291, the through hole 1291 may be used to install a DC bus copper bus, the inner peripheral wall of the through hole 1291 may also be provided with a sealing ring mating portion, and the mounting portion 129 may also be provided with bolt holes for installing a power distribution unit.

[0048] The electric drive assembly of an embodiment of this application is described below.

[0049] The electric drive assembly according to the present application embodiment is provided with the motor controller 10 of the above embodiment. Since the electric drive assembly according to the present application embodiment is provided with the motor controller 10 of the above embodiment, the motor controller 10 of the electric drive assembly has a housing 11 and a cover plate 12 installed on the housing 11. The cover plate 12 is formed with a protrusion 121 that protrudes away from the cover plate 12. A reflective part 122 can be formed on the side of the protrusion 121 facing the housing 11. The reflective part 122 can reflect electromagnetic waves, thereby reflecting the electromagnetic waves into the housing 11, so that the electromagnetic waves are attenuated and absorbed inside, reducing the diffusion of electromagnetic waves to the outside, thereby reducing the propagation of electromagnetic noise and improving the comfort and pleasure of the driver and passengers.

[0050] The vehicle of an embodiment of this application is described below.

[0051] The vehicle according to the embodiments of this application is equipped with the electric drive assembly of the above embodiments. Since the vehicle according to the embodiments of this application is equipped with the electric drive assembly of the above embodiments, the electric drive assembly of the vehicle has the above motor controller 10. The motor controller 10 has a housing 11 and a cover plate 12 installed on the housing 11. The cover plate 12 has a protrusion 121 that protrudes away from the cover plate 12. A reflective part 122 can be formed on the side of the protrusion 121 facing the housing 11. The reflective part 122 can reflect electromagnetic waves, thereby reflecting the electromagnetic waves into the housing 11, so that the electromagnetic waves are attenuated and absorbed inside, reducing the diffusion of electromagnetic waves to the outside, thereby reducing the propagation of electromagnetic noise and improving the comfort and pleasure of the driver and passengers.

[0052] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0053] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0054] In the description of this application, "multiple" means two or more.

[0055] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0056] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0057] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0058] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A motor controller, characterized in that, include: Box body; A cover plate is disposed on the box body. A protrusion is formed on the side of the cover plate away from the box body, and there are multiple protrusions. The multiple protrusions are spaced apart along a first direction and / or a second direction, the first direction and the second direction being orthogonal. Each protrusion has a reflective portion on the side facing the box body, and the reflective portion is adapted to reflect electromagnetic waves.

2. The motor controller according to claim 1, characterized in that, The reflective part has multiple reflective units, each of which is arranged sequentially along the first direction and / or the second direction. Each reflective unit has multiple reflective surfaces, and each reflective surface is orthogonally arranged with its two adjacent reflective surfaces.

3. The motor controller according to claim 2, characterized in that, A reinforcing portion extending toward the housing is provided between two adjacent reflective portions.

4. The motor controller according to claim 1, characterized in that, One of the protrusions has a plurality of mounting grooves recessed toward the cover plate on the side away from the cover plate, and the plurality of mounting grooves are spaced apart along the first direction.

5. The motor controller according to claim 4, characterized in that, The height of the protrusion is d and satisfies: 3mm≤d≤7mm.

6. The motor controller according to any one of claims 1-5, characterized in that, The cover plate is provided with a first positioning part on its outer periphery, and the box body is provided with a second positioning part that is corresponding to and connected to the first positioning part. The cover plate is provided with a first mounting hole on its outer periphery, and the box body is provided with a second mounting hole that is corresponding to the first mounting hole. The motor controller further includes a fastener, which passes through the first mounting hole and the second mounting hole to connect the cover plate and the housing.

7. The motor controller according to claim 6, characterized in that, The cover plate is also provided with a third positioning part and a third mounting hole; The motor controller also includes: A three-phase line cover plate is provided on the side of the cover plate away from the box body, and the three-phase line cover plate is provided with a fourth positioning part and a fourth mounting hole. The fourth positioning part is correspondingly provided and connected to the third positioning part, and the fourth mounting hole is correspondingly provided to the third mounting hole.

8. The motor controller according to claim 7, characterized in that, The cover plate is also provided with a mounting part, and the mounting part has a through hole.

9. An electric drive assembly, characterized in that, Including the motor controller as described in any one of claims 1-8.

10. A vehicle, characterized in that, Includes the electric drive assembly as described in claim 9.

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