Controller cover plate and controller

Abstract

The utility model relates to a controller cover plate and a controller, and the controller cover plate comprises a cover plate body which is provided with a convex hull, the outer surface of the convex hull comprises a planar structure, and a hollow cavity is formed in the convex hull; and the elastic damping plate is bonded with the planar structure. According to the controller cover plate provided by the utility model, when the electric drive assembly works and vibrates, the elastic damping plate is arranged on the cover plate body, so that energy generated by vibration of the controller is quickly transmitted to the elastic damping plate adhered to the cover plate body, and mutual friction and dislocation are generated between the elastic damping plate and the cover plate body; therefore, vibration energy is converted into heat energy to be released into air, the vibration speed of the cover plate body can be effectively reduced, and then the noise radiation quantity is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy vehicle accessories, in particular to a controller cover and a controller. Background Art

[0002] The controller is a key component in electric vehicles. The controller cover is typically bolted to the controller body for protection. As a large, thin-walled component, the rigid connection to the drive motor and reducer easily excites its inherent vibration modes, causing resonance and resulting noise radiation. This noise radiation not only affects the acoustic performance of the electric drive assembly but can also negatively impact overall operating efficiency and user experience. Utility Model Content

[0003] The purpose of the utility model is to provide a controller cover and a controller, so as to solve the problem in the prior art that the controller cover easily generates large noise radiation.

[0004] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0005] The utility model provides a controller cover, comprising: a cover body, formed with a convex bulge, the outer surface of the convex bulge comprises a planar structure, the interior of the convex bulge forms a hollow cavity; an elastic damping plate, bonded to the planar structure.

[0006] Optionally, the outer surface of the convex hull further includes a stepped structure.

[0007] Optionally, the stepped structure is connected to one side of the planar structure, or a plurality of stepped structures are provided along the circumference of the planar structure.

[0008] Optionally, the controller cover further includes a mounting boss, and the mounting boss is connected to the outer surface of the convex bump.

[0009] Optionally, the mounting boss is connected to the planar structure and protrudes from the planar structure, the elastic damping plate is provided with an avoidance hole, and the mounting boss is arranged through the avoidance hole.

[0010] Optionally, the cover body further includes a connecting edge portion, which is connected to the edge of the bulge and extends in a direction away from the bulge.

[0011] Optionally, a recessed groove is provided on a side of the connecting edge portion that is away from the protruding direction of the convex bump, and the recessed groove is arranged along the inner circumference of the connecting edge portion and communicates with the hollow cavity.

[0012] Optionally, the controller cover further includes a reinforcing rib connected to the inner surface of the convex hull.

[0013] Optionally, the elastic damping plate is a polyurethane plate, an acrylic plate, or a rubber plate.

[0014] The utility model also provides a controller, comprising: a controller body; and the controller cover plate mentioned above, wherein the controller cover plate is connected to the controller body.

[0015] Beneficial effects of the utility model:

[0016] By utilizing the technical solution of the present invention, when the electric drive assembly is working and generates vibration, the energy generated by the vibration of the controller is quickly transferred to the elastic damping plate attached to the cover body by arranging an elastic damping plate on the cover body. Mutual friction and dislocation are generated between the elastic damping plate and the cover body, thereby converting the vibration energy into heat energy and releasing it into the air, which can effectively reduce the vibration speed of the cover body and thereby reduce the amount of noise radiation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of the controller cover of the present invention;

[0018] Figure 2 for Figure 1 The exploded structural diagram of the controller cover shown in FIG.

[0019] Figure 3 for Figure 1 A schematic structural diagram of the controller cover from another angle shown;

[0020] Figure 4 for Figure 3 The main structural diagram of the controller cover shown;

[0021] Figure 5 It is a schematic diagram of the test results of the noise test of a controller composed of a controller cover installed in the prior art and a controller composed of a controller cover installed with the technical solution of this embodiment.

[0022] Among them, the labels are:

[0023] 10. Cover plate body; 11. Bump; 111. Planar structure; 112. Stepped structure; 12. Connecting edge; 121. Sink; 122. Connecting hole; 123. Side body; 124. Connecting ear; 13. Enclosure; 14. Closing plate; 20. Elastic damping plate; 21. Avoidance hole; 30. Mounting boss; 31. Protruding column; 311. Mounting hole; 32. Reinforcing rib; 40. Reinforcing rib; 41. First rib body; 42. Second rib body. DETAILED DESCRIPTION

[0024] The following describes the embodiments of the present invention with reference to the accompanying drawings and preferred embodiments. Those skilled in the art will readily understand the other advantages and benefits of the present invention from the disclosure herein. The present invention may also be implemented or applied through various other specific embodiments, and the details in this specification may be modified or altered based on different perspectives and applications without departing from the spirit of the present invention. It should be understood that the preferred embodiments are intended solely to illustrate the present invention and are not intended to limit the scope of protection of the present invention.

[0025] It should be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present invention. Therefore, the drawings only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component can be changed at will, and the component layout type may also be more complicated.

[0026] This embodiment proposes a controller cover, such as Figures 1 to 4 As shown, it comprises: a cover body 10 and an elastic damping plate 20. The cover body 10 is formed with a convex bulge 11, the outer surface of the convex bulge 11 comprises a planar structure 111, and the interior of the convex bulge 11 forms a hollow cavity; the elastic damping plate 20 is bonded to the planar structure 111.

[0027] It should be noted that with the continuous innovation and progress in electric drive technology, the design of electric drive assemblies is moving towards high speed, high power density, integration, and lightweighting. However, this trend inevitably leads to an increase in electromagnetic force and a decrease in structural rigidity, which in turn leads to increased vibration and degraded noise performance.

[0028] When the controller cover of this embodiment is used, when the electric drive assembly is working and generates vibration, the energy generated by the vibration of the controller is quickly transferred to the elastic damping plate 20 attached to the cover body 10 by setting an elastic damping plate 20 on the cover body 10. Mutual friction and dislocation are generated between the elastic damping plate 20 and the cover body 10, thereby converting the vibration energy into heat energy and releasing it into the air, which can effectively reduce the vibration speed of the cover body 10 and thereby reduce the amount of noise radiation.

[0029] It should be noted that the elastic damping plate 20 is bonded to the cover body 10 . When the controller cover vibrates, from a microscopic perspective, there is mutual friction and displacement between the elastic damping plate 20 and the cover body 10 .

[0030] Furthermore, effective control of the noise radiation of the controller cover plays a vital role in reducing the overall noise level of the electric drive assembly.

[0031] It's worth noting that the elastic damping plate 20 is assembled onto the cover body 10 using a pressurized device such as a pneumatic press. A pressure of 15 Psi (0.1 MPa) is applied to the plate 20 and the cover body 10 for at least 10 seconds. After the elastic damping plate 20 and the cover body 10 are bonded, they are allowed to stand for 24 hours to fully cure before being ready for use.

[0032] In the related art, the cover body 10 is usually in a nearly flat plate structure, which results in the cover body 10 and the controller body being almost fitted together, which is not conducive to the air flow inside the controller. Figures 1 to 4 As shown, by providing a convex hump 11 to form a hollow cavity inside the convex hump 11, the cover body 10 is also in a basin-shaped structure, thereby leaving enough space inside the controller, thereby increasing the air flow inside the controller and facilitating the heat dissipation inside the controller.

[0033] Specifically, such as Figures 1 to 3 As shown, in the technical solution of this embodiment, the cover body 10 includes a surrounding plate 13 and a sealing plate 14. The surrounding plate 13 is arranged to surround the circumference. The sealing plate 14 is connected to the surrounding plate 13 and blocks the opening at one end of the surrounding plate 13. The surrounding plate 13 and the sealing plate 14 combine to form the above-mentioned convex bulge 11 and enclose a hollow cavity. Furthermore, the outer surface of the sealing plate 14, that is, the side of the sealing plate 14 away from the hollow cavity, is formed with the above-mentioned planar structure 111.

[0034] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the outer surface of the convex hull 11 further includes a stepped structure 112 .

[0035] In related art, the cover body 10 typically has a nearly flat structure. Consequently, the cover body 10 typically has a relatively large planar structure, which can easily induce resonance. Large planar structures are also prone to bulging, causing a drum-like sensation during vibration, leading to increased vibration. In the technical solution of this embodiment, however, the outer surface of the convex bump 11 has not only a planar structure 111 but also a stepped structure 112. This avoids the need for a relatively large planar structure on the cover body 10, which would enhance the modal properties of the controller cover, further preventing resonance and reducing vibration of the cover body 10.

[0036] Specifically, such as Figure 1 and Figure 2 As shown, a portion of the sealing plate 14 is a flat plate, and another portion is a stepped plate; that is, the sealing plate 14 is not a simple flat plate.

[0037] like Figure 1 and Figure 2As shown, in the technical solution of this embodiment, the stepped structure 112 is connected to one side of the planar structure 111.

[0038] Of course, in other alternative embodiments, a plurality of stepped structures 112 may be provided along the circumference of the planar structure 111. The number and position of the stepped structures 112 may be specifically set according to actual needs.

[0039] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the controller cover also includes a mounting boss 30, which is connected to the outer surface of the convex bump 11. The installation of the mounting boss 30 can be used to install components such as a soundproof cover to reduce noise radiation, thereby further controlling the noise of the electric drive assembly.

[0040] Furthermore, the soundproof cover is detachably connected to the mounting boss 30. This arrangement makes the assembly and disassembly of the soundproof cover more convenient, that is, it can further ensure the sound insulation effect and facilitate assembly and disassembly, which has great application value in the field of automotive parts technology.

[0041] Specifically, such as Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the mounting boss 30 includes a protruding post 31 and a reinforcing rib 32. One end of the protruding post 31 is connected to the outer surface of the convex bump 11, and the other end of the protruding post 31 extends away from the convex bump 11. The reinforcing rib 32 is connected to both the outer circumference of the protruding post 31 and the outer surface of the convex bump 11. A plurality of reinforcing ribs 32 are provided at intervals along the circumference of the protruding post 31. The protruding post 31 has a mounting hole 311 (e.g., a threaded hole) defined therein. A fastener, such as a bolt, is inserted through the sound insulation enclosure and secured within the mounting hole 311.

[0042] It should be noted that the sound insulation cover can be designed to have a shape and structure that matches the shape of the controller cover.

[0043] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the mounting boss 30 is connected to the planar structure 111 and protrudes from the planar structure 111. The elastic damping plate 20 is provided with an avoidance hole 21, and the mounting boss 30 is disposed through the avoidance hole 21. Compared with disposing the mounting boss 30 on the stepped structure 112, disposing the mounting boss 30 on the planar structure 111 makes the mounting boss 30 easier to process and form, and can ensure the stability of the mounting boss 30.

[0044] Specifically, such as Figure 1 and Figure 2As shown, in the technical solution of this embodiment, a plurality of mounting bosses 30 are arranged at intervals on the planar structure 111, for example Figure 1 Two are shown. Of course, in other alternative embodiments, the number of mounting bosses 30 can be another number, such as one, three, or four. The number and location of mounting bosses 30 can be customized based on actual needs. Furthermore, the dimensions of the protruding posts 31 of each mounting boss 30 can be the same or different from those of the other mounting bosses 30, as long as they are compatible with the soundproof enclosure. Furthermore, the number of reinforcing ribs 32 corresponding to each protruding post 31 can be the same or different.

[0045] Accordingly, the number and positions of the avoidance holes 21 may be set corresponding to the number and positions of the mounting bosses 30 .

[0046] It is worth noting that the size of the opening of the avoidance hole 21 only needs to allow the mounting boss 30 to pass through, so that the elastic damping plate 20 and the mounting boss 30 do not interfere with each other. This prevents the avoidance hole 21 from being too large and affecting the vibration reduction effect of the elastic damping plate 20. Furthermore, the shape of the avoidance hole 21 can also be set according to actual needs and can be regular (such as square, circular, elliptical, oblong, etc.) or irregular.

[0047] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the cover body 10 also includes a connecting edge 12, which is connected to the edge of the protrusion 11 and extends away from the protrusion 11. This arrangement allows the cover body 10 to be connected to the controller body via the connecting edge 12. Specifically, the connecting edge 12 is provided with a connecting hole 122 to allow fasteners such as bolts to pass through.

[0048] like Figures 1 to 3 As shown, in the technical solution of this embodiment, the connecting edge 12 is connected to the edge of the enclosure 13 away from the sealing plate 14, and the connecting edge 12 is circumferentially arranged corresponding to the enclosure 13.

[0049] like Figure 3 As shown, in the technical solution of this embodiment, a recessed groove 121 is defined on the side of the connecting edge 12 facing away from the protruding direction of the convex bump 11. This recessed groove 121 is arranged circumferentially along the inner periphery of the connecting edge 12 and communicates with the hollow cavity. This arrangement allows for a partial extension of the controller body into recessed groove 121 after the controller cover is connected to the controller body, ensuring a full fit between the controller cover and the controller body after installation. This effectively achieves electromagnetic compatibility (EMC), reduces electromagnetic interference, and improves overall system performance.

[0050] It is worth noting that since the controller contains numerous electrical components, electromagnetic interference (EMI) becomes increasingly prominent as power increases. By applying the technical solution of this embodiment and optimizing the controller cover design, electromagnetic compatibility (EMC) can be effectively achieved, thereby reducing EMI and improving overall system performance.

[0051] Specifically, such as Figures 1 to 3 As shown, the connecting edge 12 includes a side body 123 and a connecting ear 124. The side body 123 is connected to the edge of the enclosure 13 away from the sealing plate 14 and is circumferentially arranged around the enclosure 13. The connecting ear 124 is connected to the side body 123. There are several connecting ears 124 spaced apart along the circumference of the side body 123. The connecting hole 122 is opened on the connecting ear 124, and the sink 121 is opened on the side body 123.

[0052] like Figure 3 As shown, in the technical solution of this embodiment, the controller cover further includes a reinforcing rib 40, which is connected to the inner surface of the convex bulge 11. By providing the reinforcing rib 40, the expansion of the controller cover can be effectively reduced, and the amount of noise radiation can be reduced.

[0053] Specifically, such as Figure 3 As shown, the reinforcing ribs 40 include a first rib 41 and a second rib 42. The first rib 41 extends along a first direction, and the second rib 42 extends along a second direction. A plurality of first ribs 41 are arranged at intervals, and a plurality of second ribs 42 are arranged at intervals. The plurality of first ribs 41 and the plurality of second ribs 42 are arranged in an intersecting manner (i.e., the first and second directions are arranged at an angle) to form a mesh structure. This arrangement ensures that the reinforcing ribs 40 effectively strengthen the cover body 10.

[0054] It is worth noting that if Figure 3 As shown, the inner surface of the convex bulge 11 corresponding to the planar structure 111 and the inner surface of the convex bulge 11 corresponding to the stepped structure 112 are both provided with reinforcing ribs 40. One side surface of the first rib 41 and one side surface of the second rib 42 are both connected to the inner surface of the sealing plate 14, and both ends of the first rib 41 along the first direction and both ends of the second rib 42 along the second direction are both connected to the enclosure 13.

[0055] In the technical solution of this embodiment, the elastic damping plate 20 is a polyurethane plate, an acrylic plate, or a rubber plate. Of course, the elastic damping plate 20 can also be made of other elastic materials.

[0056] In the technical solution of this embodiment, the cover body 10 is made of aluminum alloy, such as ADC12.

[0057] The controller cover in this embodiment's technical solution utilizes high-pressure die-cast aluminum and an elastic damping layer. It boasts a simple structure, a simple design, a light weight, and low manufacturing costs. While meeting sealing requirements, it also reduces vibration and noise radiation, significantly improving the NVH performance of the electric drive assembly. Furthermore, the design of the sink 121 is designed to meet electromagnetic compatibility (EMC) requirements, effectively achieving EMC compliance, thereby reducing electromagnetic interference and improving overall system performance.

[0058] The utility model also provides a controller, comprising: a controller body and the above-mentioned controller cover, wherein the controller cover is connected to the controller body.

[0059] Furthermore, the controller cover is installed on one side of the controller body, or the controller cover is installed on both opposite sides of the controller body.

[0060] For the same controller body, a noise test was conducted on a controller composed of a controller cover in the prior art and a controller composed of a controller cover according to the technical solution of this embodiment. The test results are as follows: Figure 5 As shown. Figure 5 It can be clearly seen that the controller composed of the controller cover according to the technical solution of this embodiment has a significant noise attenuation effect, especially the position selected in the box. The noise result of this position in the original state (the controller composed of the controller cover in the prior art was installed) exceeded the standard requirements. After replacing the controller cover with the technical solution of this embodiment, the noise at this position was reduced by 8dB(A), reaching the acceptance standard.

[0061] The above embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Any equivalent substitution or modification made by those skilled in the art based on the present invention shall fall within the protection scope of the present invention.

Claims

1. A controller cover, characterized in that: include: The cover plate body (10) is formed with a convex bulge (11), the outer surface of the convex bulge (11) includes a planar structure (111), and the interior of the convex bulge (11) forms a hollow cavity; an elastic damping plate (20) bonded to the planar structure (111); A mounting boss (30) is provided, wherein the mounting boss (30) is connected to the outer surface of the convex hump (11).

2. The controller cover according to claim 1, characterized in that: The outer surface of the convex hull (11) further includes a stepped structure (112).

3. The controller cover according to claim 2, characterized in that: The stepped structure (112) is connected to one side of the planar structure (111), or a plurality of stepped structures (112) are arranged along the circumference of the planar structure (111).

4. The controller cover according to any one of claims 1 to 3, characterized in that: The mounting boss (30) is connected to the planar structure (111) and protrudes from the planar structure (111); the elastic damping plate (20) is provided with an avoidance hole (21); and the mounting boss (30) is arranged to pass through the avoidance hole (21).

5. The controller cover according to any one of claims 1 to 3, characterized in that: The cover plate body (10) further comprises a connecting edge (12), wherein the connecting edge (12) is connected to the edge of the convex bump (11) and extends in a direction away from the convex bump (11).

6. The controller cover according to claim 5, characterized in that: A sinking groove (121) is provided on a side of the connecting edge (12) that is away from the protruding direction of the convex bump (11). The sinking groove (121) is arranged along the inner circumference of the connecting edge (12) and is in communication with the hollow cavity.

7. The controller cover according to any one of claims 1 to 3, characterized in that: The controller cover further comprises a reinforcing rib (40), wherein the reinforcing rib (40) is connected to the inner surface of the convex bump (11).

8. The controller cover according to any one of claims 1 to 3, characterized in that: The elastic damping plate (20) is a polyurethane plate, an acrylic plate, or a rubber plate.

9. A controller, characterized in that: include: Controller body; The controller cover according to any one of claims 1 to 8, wherein the controller cover is connected to the controller body.

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