Cover plate assembly for motor controller and motor controller

Abstract

The utility model discloses a cover plate assembly used for a motor controller and the motor controller, and the cover plate assembly comprises a first plate which is connected with a housing of the motor controller; the second plate is arranged on one side, deviating from the motor controller shell, of the first plate; the third plate is arranged on the side, away from the first plate, of the second plate, the second plate is a damping plate, and the damping coefficient of the second plate is larger than that of the first plate and that of the third plate. According to the cover plate assembly provided by the utility model, the second plate is configured to be the damping plate, and the damping coefficient of the second plate is greater than the damping coefficients of the first plate and the third plate, so that the vibration frequency and the vibration amplitude of the cover plate assembly are effectively reduced, and the resonance of the cover plate assembly and the motor controller is effectively inhibited; and the NVH (Noise Vibration and Harshness) performance (noise, vibration and sound vibration roughness) of the motor controller is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a cover plate assembly for a motor controller and a motor controller. Background Art

[0002] In the related art, since the upper cover assembly of the motor controller generally adopts a thin plate structure and is connected to the controller housing with bolts on all sides, the middle area of ​​the upper cover is large, and the first-order mode of the cover structure is low, it is easy to resonate with the frequency of the external excitation force and generate radiation noise. When the vibration is too severe, it may cause the cover assembly to crack or break and other failure forms. Long-term resonance will also cause structural fatigue of the cover assembly, thereby reducing the service life of the motor controller. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a cover plate assembly for a motor controller. According to the utility model, the cover plate assembly is configured as a damping plate, and the damping coefficient of the second plate is greater than the damping coefficients of the first plate and the third plate, respectively, so as to effectively reduce the vibration frequency and vibration amplitude of the cover plate assembly, effectively suppress the resonance between the cover plate assembly and the motor controller, and improve the NVH performance (noise, vibration and harshness) of the motor controller.

[0004] The utility model also provides a motor with the cover plate assembly.

[0005] According to the utility model, the cover plate assembly for the motor controller includes: a first plate, which is connected to the motor controller housing; a second plate, which is arranged on the side of the first plate away from the motor controller housing; and a third plate, which is arranged on the side of the second plate away from the first plate, and the second plate is constructed as a damping plate and has a damping coefficient greater than that of the first plate and the second plate, respectively.

[0006] According to the utility model, the cover plate assembly is arranged between the first plate and the third plate through the second plate and connects the first plate and the third plate together. The second plate is constructed as a damping plate. The damping coefficient of the second plate is respectively greater than the damping coefficients of the first plate and the third plate. When the object is in a vibrating state, it will consume part of the energy to offset the vibration. In general, the larger the damping coefficient, the smaller the vibration amplitude of the object and the faster the vibration decay rate. On the contrary, the smaller the damping coefficient, the larger the vibration amplitude of the object and the slower the vibration decay rate. Therefore, a second plate with a larger damping coefficient is arranged between the first plate and the third plate, which can effectively reduce the vibration frequency and vibration amplitude of the cover plate assembly, effectively suppress the resonance of the cover plate assembly and the motor controller, and improve the NVH performance (noise, vibration and acoustic roughness) of the motor controller.

[0007] According to an embodiment of the present invention, the second plate is configured as a flexible plate.

[0008] According to an embodiment of the present invention, the thicknesses of the first plate and the third plate are h1 and h3 respectively, the thickness of the second plate is h2, and the following conditions are satisfied: 0.8 mm ≤ h1 = h3 ≤ 0.85 mm, 0.04 mm ≤ h2 ≤ 0.045 mm.

[0009] According to an embodiment of the utility model, a connecting piece connected to the motor controller is arranged at the center of the controller cover assembly.

[0010] According to an embodiment of the utility model, a first junction box area and a second junction box area are formed on the third plate, a first junction box area is formed with a first junction hole penetrating the cover plate assembly, and the second junction box area is provided with a second junction hole; wherein reinforcing ribs are formed on the third plate, the reinforcing ribs are respectively provided on the first junction box area and the second junction box area, and the reinforcing ribs are provided on at least a portion of the outer periphery of the first junction hole and at least a portion of the outer periphery of the second junction hole.

[0011] According to one embodiment of the utility model, the reinforcing ribs include: a first reinforcing rib, which is arranged in the first junction box area and is arranged around the outer periphery of the first junction box hole; a second reinforcing rib, which is constructed as a plurality of reinforcing ribs arranged at intervals in the second junction box area; and a third reinforcing rib, which is connected to at least one of the second reinforcing ribs and is arranged on at least a portion of the outer periphery of the second junction hole.

[0012] According to an embodiment of the present utility model, the third reinforcing rib is configured as an arc-shaped rib.

[0013] According to an embodiment of the present invention, the cover plate assembly further includes: a molded adhesive layer, wherein the molded adhesive layer is arranged on a side of the first plate facing away from the second plate.

[0014] According to an embodiment of the present invention, maintenance openings that are arranged opposite to each other in the thickness direction are respectively formed on the first plate, the second plate and the third plate, and the maintenance openings are located between the first reinforcing rib and the second reinforcing rib.

[0015] The motor controller according to the present utility model is briefly described below.

[0016] The motor controller according to the utility model is provided with the cover assembly described in any one of the above embodiments. Since the motor controller according to the utility model is provided with the cover assembly described in any one of the above embodiments, the motor controller according to the present application has low noise during operation and has higher stability and reliability.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a schematic diagram of the surface structure of a cover plate assembly according to an embodiment of the utility model;

[0020] Figure 2 It is a schematic diagram of the arrangement of the first plate, the second plate, and the third plate according to an embodiment of the utility model.

[0021] Reference numerals:

[0022] 100. Cover plate assembly;

[0023] 11. first plate; 12. second plate; 13. third plate; 101. connecting member;

[0024] 21. First junction box area; 22. Second junction box area; 23. First wiring hole; 24. Second wiring hole;

[0025] 31. First reinforcing rib; 32. Second reinforcing rib; 33. Third reinforcing rib; 34. Maintenance opening. DETAILED DESCRIPTION

[0026] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0027] In the related art, since the upper cover assembly of the motor controller generally adopts a thin plate structure and is connected to the controller housing with bolts on all sides, the middle area of ​​the upper cover is large, and the first-order mode of the cover structure is low, it is easy to resonate with the frequency of the external excitation force and generate radiation noise. When the vibration is too severe, it may cause the cover assembly to crack or break and other failure forms. Long-term resonance will also cause structural fatigue of the cover assembly, thereby reducing the service life of the motor controller.

[0028] Reference below Figure 1-Figure 2 A cover plate assembly for a motor controller according to an embodiment of the utility model is described.

[0029] According to the utility model, the cover plate assembly 100 for the motor controller includes: a first plate 11, a second plate 12 and a third plate 13, the first plate 11 is connected to the motor controller housing; the second plate 12 is arranged on the side of the first plate 11 away from the motor controller housing; the third plate 13 is arranged on the side of the second plate 12 away from the first plate 11, the second plate 12 is constructed as a damping plate and the damping coefficient is respectively greater than the first plate 11 and the third plate 13.

[0030] In some specific embodiments, the cover plate assembly 100 is composed of a first plate 11, a second plate 12 and a third plate 13, and the first plate 11, the second plate 12 and the third plate 13 are stacked in sequence in the thickness direction. The first plate 11 is connected to the motor controller housing, thereby realizing the connection between the cover plate assembly 100 and the motor controller housing. The second plate 12 is arranged between the first plate 11 and the third plate 13 and connects the first plate 11 and the third plate 13 together. The second plate 12 is constructed as a damping plate, and the damping coefficient of the second plate 12 is respectively greater than the damping coefficients of the first plate 11 and the third plate 13. The damping coefficient here is generally used to indicate the degree of energy loss of an object when it vibrates. When the object is in a vibrating state, it consumes part of the energy to offset the vibration. Generally speaking, the larger the damping coefficient, the smaller the vibration amplitude of the object, and the faster the vibration decay rate. On the contrary, the smaller the damping coefficient, the larger the vibration amplitude of the object, and the slower the vibration decay rate. Therefore, a second plate 12 with a larger damping coefficient is arranged between the first plate 11 and the third plate 13, which can effectively reduce the vibration frequency and vibration amplitude of the cover plate assembly 100, effectively suppress the resonance between the cover plate assembly 100 and the motor controller, and improve the NVH performance (noise, vibration and acoustic roughness) of the motor controller. At the same time, the first plate 11 and the third plate 13 are constructed as metal plates, where the metal includes but is not limited to steel. The metal plate can ensure the structural strength and rigidity of the cover plate assembly 100, and prevent the cover plate assembly 100 from being deformed by external force.

[0031] According to the utility model, the cover plate assembly 100 is arranged between the first plate 11 and the third plate 13 through the second plate 12 and connects the first plate 11 and the third plate 13 together. The second plate 12 is constructed as a damping plate. The damping coefficient of the second plate 12 is respectively greater than the damping coefficients of the first plate 11 and the third plate 13. When the object is in a vibrating state, it will consume part of the energy to offset the vibration. In general, the larger the damping coefficient, the smaller the vibration amplitude of the object, and the faster the vibration decay rate. On the contrary, the smaller the damping coefficient, the larger the vibration amplitude of the object, and the slower the vibration decay rate. Therefore, a second plate 12 with a larger damping coefficient is arranged between the first plate 11 and the third plate 13, which can effectively reduce the vibration frequency and vibration amplitude of the cover plate assembly 100, effectively suppress the resonance of the cover plate assembly 100 and the motor controller, and improve the NVH performance (noise, vibration and acoustic roughness) of the motor controller.

[0032] According to an embodiment of the present invention, the second plate 12 is configured as a flexible plate.

[0033] In some specific embodiments, the second plate 12 is made of damping glue, and the damping glue is made of polymer shock-absorbing material damping glue. The polymer shock-absorbing damping glue can convert mechanical vibration energy or sound energy into heat energy and dissipate it, and can prevent or reduce the damage to the cover assembly 100 caused by the vibration of the motor controller. Under long-term vibration and impact, the polymer material can still maintain its original damping performance and will not deteriorate. This makes the second plate 12 have excellent anti-fatigue performance, and can maintain stable performance in various environments, thereby improving the stability and reliability of the cover assembly 100.

[0034] In addition, the damping glue is also sticky, so that the second plate 12 can be attached to the first plate 11 or the third plate 13, and the first plate 11 and the third plate 13 are tightly connected together, making the assembly of the cover plate assembly 100 simpler and more convenient.

[0035] According to an embodiment of the present invention, the thicknesses of the first plate 11 and the third plate 13 are h1 and h3 respectively, the thickness of the second plate 12 is h2, and the following conditions are satisfied: 0.8 mm ≤ h1 = h3 ≤ 0.85 mm, 0.04 mm ≤ h2 ≤ 0.045 mm.

[0036] When h1, h2, and h3 are set within the range of 0.8mm≤h1=h3≤0.85mm and 0.04mm≤h2≤0.045mm, the anti-resonance capability of the cover assembly 100 can be improved while the thickness of the cover assembly 100 can be reduced, making the cover assembly 100 smaller in mass and lighter in weight.

[0037] According to an embodiment of the present invention, a connector 101 connected to a motor controller is disposed at the center of the cover assembly 100 .

[0038] In some specific embodiments, mounting holes facing each other in the thickness direction are respectively provided at the centers of the first plate 11, the second plate 12 and the third plate 13. The mounting holes on the first plate 11 penetrate the first plate 11 in the thickness direction, the mounting holes on the second plate 12 penetrate the second plate 12 in the thickness direction, and the mounting holes on the third plate 13 penetrate the third plate 13 in the thickness direction. The connecting member 101 can be constructed as a bolt, which passes through the mounting holes on the first plate 11, the second plate 12 and the third plate 13 and is connected to the motor controller housing, so that the central area of ​​the cover assembly 100 can be tightly connected to the motor controller housing, thereby improving the natural vibration frequency of the cover assembly 100, reducing the noise generated by vibration between the center of the cover assembly 100 and the motor controller housing, and improving the NVH performance (noise, vibration and acoustic roughness) of the motor controller.

[0039] According to one embodiment of the utility model, a first junction box area 21 and a second junction box area 22 are formed on the third plate 13, a first junction box area 23 penetrating the cover plate assembly 100 is formed in the first junction box area 21, and a second junction box area 24 is provided in the second junction box area 22; wherein reinforcing ribs are formed on the third plate 13, the reinforcing ribs are respectively provided in the first junction box area 21 and the second junction box area 22, and the reinforcing ribs are provided on at least part of the periphery of the first junction hole 23 and at least part of the periphery of the second junction hole 24.

[0040] In some specific embodiments, the third plate 13 is divided into a first wiring box area 21 and a second wiring box area 22, a rectangular first wiring hole 23 penetrating the cover plate assembly 100 is formed in the first wiring box area 21, and a circular second wiring hole 24 penetrating the cover plate assembly 100 is provided in the second wiring box area 22, the first wiring hole 23 and the second wiring hole 24 are respectively suitable for the internal circuit of the motor controller to pass through, and a reinforcing rib protruding in a direction away from the second plate 12 is formed on the third plate 13, thereby improving the structural strength and rigidity of the third plate 13, reinforcing ribs are respectively provided in the first wiring box area 21 and the second wiring box area 22, and at least a portion of the outer periphery of the first wiring hole 23 and at least a portion of the second wiring hole 24 are provided. Reinforcing ribs are provided on the periphery. When the first wiring hole 23 and the second wiring hole 24 need to be closed with cover plates respectively, the cover plates are generally bolted to the first wiring box area 21 and the second wiring box area 22 respectively. Since the bite force is too large when the cover plates are bolted to the first wiring box area 21 and the second wiring box area 22, the peripheral walls of the first wiring hole 23 and the second wiring hole 24 may be deformed. Reinforcing ribs are provided on at least part of the periphery of the first wiring hole 23 and at least part of the periphery of the second wiring hole 24 to improve the structural strength and rigidity of the peripheral walls of the first wiring hole 23 and the second wiring hole 24 to prevent the peripheral walls of the first wiring hole 23 and the second wiring hole 24 from being deformed.

[0041] According to one embodiment of the utility model, the reinforcing ribs include: a first reinforcing rib 31, a second reinforcing rib 32 and a third reinforcing rib 33, the first reinforcing rib 31 is arranged in the first wiring box area 21 and is arranged around the outer periphery of the first wiring hole 23; the second reinforcing rib 32 is constructed as a plurality of reinforcing ribs arranged at intervals in the second wiring box area 22; the third reinforcing rib 33 is connected to at least one second reinforcing rib 32 and is arranged on at least part of the outer periphery of the second wiring hole 24.

[0042] In some specific embodiments, the reinforcing ribs are composed of a first reinforcing rib 31, a second reinforcing rib 32 and a third reinforcing rib 33. The first reinforcing rib 31 is constructed as a plurality of reinforcing ribs and is arranged around the outer periphery of the first wiring hole 23 to improve the structural strength and rigidity of the outer peripheral wall of the first wiring hole 23, and prevent the outer peripheral wall of the first wiring hole 23 from being deformed when the cover plate is connected to the outer peripheral wall of the first wiring hole 23. The second reinforcing rib 32 is constructed as a plurality of reinforcing ribs and is arranged in sequence at intervals in the second wiring box area 22. The second reinforcing rib 32 extends along the length direction of the third plate 13 to improve the structural strength and rigidity of the second wiring box area 22. The third reinforcing rib 33 is arranged around at least part of the outer periphery of the second wiring hole 24 and is connected to at least one second reinforcing rib 32 to improve the structural strength and rigidity of the outer peripheral wall of the second wiring hole 24, and prevent the outer peripheral wall of the second wiring hole 24 from being deformed when the cover plate is connected to the outer peripheral wall of the second wiring hole 24.

[0043] According to an embodiment of the present invention, the third reinforcing rib 33 is configured as an arc-shaped rib.

[0044] In some specific embodiments, the third reinforcing rib 33 can be constructed as an arc-shaped rib. On the one hand, it can have a certain avoidance effect. The arc-shaped rib can leave a certain installation space for the cover plate that closes the second wiring hole 24, thereby facilitating the assembly of the cover plate that closes the second wiring hole 24. On the other hand, the arc-shaped rib can also make the appearance of the third plate 13 more beautiful.

[0045] According to an embodiment of the present invention, the cover plate assembly 100 further includes: a molded adhesive layer, which is disposed on a side of the first plate 11 facing away from the second plate 12 .

[0046] In some specific embodiments, a glue-coated surface is provided on the side of the first plate 11 facing away from the second plate 12, and the molded glue layer is evenly applied on the glue-coated surface by a glue dispensing machine. The molded glue layer is arranged between the first plate 11 and the motor controller housing. The molded glue layer is cured by high-temperature baking to form a sticky elastic sealing structure on the glue-coated surface. Compared with the sealant used in the prior art, when the cover assembly 100 and the motor controller housing are assembled after disassembly and maintenance, there is no need to apply the molded glue layer again. The cover assembly 100 and the motor controller housing can be assembled directly, which reduces the assembly arrangement between the cover assembly 100 and the motor controller housing, making the assembly of the cover assembly 100 and the motor controller housing more convenient.

[0047] According to an embodiment of the utility model, maintenance openings 34 are respectively formed on the first plate 11, the second plate 12 and the third plate 13, and are arranged opposite to each other in the thickness direction. The maintenance opening 34 on the first plate 11 penetrates the first plate 11 in the thickness direction, the maintenance opening 34 on the second plate 12 penetrates the second plate 12 in the thickness direction, and the maintenance opening 34 on the third plate 13 penetrates the third plate 13 in the thickness direction. The maintenance opening 34 is connected to the inside of the motor controller, and there are two maintenance openings 34, both of which are located between the first reinforcing rib 31 and the second reinforcing rib 32, one of the maintenance openings 34 is arranged opposite to the fuse, and the other maintenance opening 34 is arranged opposite to the magnetic busbar, so that the motor controller can be repaired without disassembling the cover plate assembly 100, making the maintenance and repair of the motor controller more convenient and quick.

[0048] The motor controller according to the present utility model is briefly described below.

[0049] The motor controller according to the utility model is provided with the cover plate assembly 100 described in any one of the above embodiments. Since the motor controller according to the utility model is provided with the cover plate assembly 100 described in any one of the above embodiments, the motor controller according to the present application has low noise during operation and has higher stability and reliability.

[0050] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0051] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0052] In the description of the present invention, "plurality" means two or more.

[0053] In the description of the present invention, a first feature being “above” or “below” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact but are in contact with each other via another feature therebetween.

[0054] In the description of the present invention, a first feature “above”, “over” and “above” a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cover assembly for a motor controller, characterized in that: include: A first plate (11), the first plate (11) being connected to a motor controller housing; a second plate (12), the second plate (12) being arranged on a side of the first plate (11) facing away from the motor controller housing; A third plate (13), wherein the third plate (13) is arranged on a side of the second plate (12) facing away from the first plate (11), and the second plate (12) is configured as a damping plate and has a damping coefficient greater than that of the first plate (11) and the second plate (12).

2. The cover assembly for a motor controller according to claim 1, characterized in that: The second plate (12) is configured as a flexible plate.

3. The cover assembly for a motor controller according to claim 2, characterized in that: The thicknesses of the first plate (11) and the third plate (13) are h1 and h3 respectively, the thickness of the second plate (12) is h2, and the following conditions are satisfied: 0.8 mm ≤ h1 = h3 ≤ 0.85 mm, 0.04 mm ≤ h2 ≤ 0.045 mm.

4. The cover assembly for a motor controller according to claim 1, characterized in that: A connecting piece (101) connected to the motor controller is arranged at the center of the cover plate assembly.

5. The cover assembly for a motor controller according to claim 4, characterized in that: The third plate (13) is formed with a first wiring box area (21) and a second wiring box area (22); the first wiring box area (21) is formed with a first wiring hole (23) penetrating the cover plate assembly; the second wiring box area is provided with a second wiring hole (24); wherein The third plate (13) is formed with reinforcing ribs, the reinforcing ribs are respectively arranged in the first wiring box area (21) and the second wiring box area (22), and the reinforcing ribs are arranged on at least a portion of the outer periphery of the first wiring hole (23) and at least a portion of the outer periphery of the second wiring hole (24).

6. The cover assembly for a motor controller according to claim 5, characterized in that: The reinforcing ribs include: A first reinforcing rib (31), the first reinforcing rib (31) being arranged in the first wiring box area (21) and surrounding the outer circumference of the first wiring hole (23); a second reinforcing rib (32), the second reinforcing rib (32) being configured as a plurality of reinforcing ribs arranged at intervals within the second junction box area (22); A third reinforcing rib (33), the third reinforcing rib (33) being connected to at least one of the second reinforcing ribs (32) and being arranged on at least a portion of the outer periphery of the second wiring hole (24).

7. The cover assembly for a motor controller according to claim 6, characterized in that: The third reinforcing rib (33) is configured as an arc-shaped rib.

8. The cover assembly for a motor controller according to claim 1, characterized in that: Also includes: A molded adhesive layer, wherein the molded adhesive layer is arranged on a side of the first plate (11) facing away from the second plate (12).

9. The cover assembly for a motor controller according to claim 6, characterized in that: The first plate (11), the second plate (12) and the third plate (13) are respectively formed with maintenance openings (34) arranged opposite to each other in the thickness direction, and the maintenance openings (34) are located between the first reinforcing rib (31) and the second reinforcing rib (32).

10. A motor controller, characterized in that: The cover plate assembly comprises any one of claims 1 to 9.

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