CN219999806U - Upper cover plate structure of motor controller, motor controller and vehicle - Google Patents
Upper cover plate structure of motor controller, motor controller and vehicle Download PDFInfo
- Publication number
- CN219999806U CN219999806U CN202320729248.6U CN202320729248U CN219999806U CN 219999806 U CN219999806 U CN 219999806U CN 202320729248 U CN202320729248 U CN 202320729248U CN 219999806 U CN219999806 U CN 219999806U
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- upper cover
- cover plate
- motor controller
- mute
- plate
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- 238000013016 damping Methods 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000007747 plating Methods 0.000 claims description 4
- 239000003190 viscoelastic substance Substances 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 9
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000017525 heat dissipation Effects 0.000 description 9
- 238000009825 accumulation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 4
- 239000000428 dust Substances 0.000 description 3
- 230000005284 excitation Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Motor Or Generator Frames (AREA)
Abstract
The utility model relates to the technical field of vehicles, in particular to a motor controller upper cover plate structure, a motor controller and a vehicle, wherein the upper cover plate structure comprises: an upper cover plate body; the upper cover plate body top is provided with the mute plate with at least three layers of thin plate structures, the damping coefficient of the middle layer material is larger than that of the outer layer material, high damping is provided through the damping coefficient difference between the middle layer material and the outer layer material, mechanical energy generated by exciting force resonance transmitted to the mute plate by the power assembly is converted into heat energy to be dissipated, resonance of the upper cover plate body is effectively restrained, and then the noise reduction effect is achieved.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to a motor controller upper cover plate structure, a motor controller and a vehicle.
Background
Noise, vibration and harshness (NVH) performance is a key technical index of the electric drive assembly of the new energy automobile, and the NVH performance of the electric drive assembly directly influences the driving comfort of the whole automobile. The main excitation source of the NVH of the electric drive assembly is a motor and a speed reducer, and when the motor and the speed reducer operate, the generated excitation force is transmitted to a motor controller through a three-in-one integrated shell structure. Because the upper cover plate of the motor controller generally adopts a thin plate structure, the periphery of the upper cover plate is connected with the controller shell by bolts, the middle area of the upper cover plate is large, the first-order mode of the structure of the upper cover plate is low, resonance is easy to occur with the frequency of external excitation force, radiation noise is generated, structural fatigue is caused by long-time resonance, and the service life of the controller is further reduced.
Improvement of NVH (noise, vibration and harshness) caused by an upper cover plate of a motor controller is mainly improved through two schemes.
The first scheme is that the wall thickness of the upper cover plate of the controller is increased or reinforcing ribs are increased, the first-order mode of the controller assembly is improved, the resonance frequency band is avoided, the NVH effect is improved, the NVH effect can be improved, but the lifting effect is limited, and the overall weight of the controller can be increased. As the NVH performance requirements of the whole vehicle are higher and higher, the design by improving one dimension of the mode cannot meet the NVH requirements of the whole vehicle.
The scheme II is that the upper cover plate adopts compound silence plate stamping forming, utilizes the damping layer in the silence plate to restrain the vibration of upper cover plate, reaches the effect of making an uproar falls, but with compound silence plate stamping forming's apron simple structure, rigidity is poor, and can not do complicated EMC division board in the apron inside to reduce the EMC performance of electric drive assembly.
Disclosure of Invention
The utility model aims to solve the problems that an upper cover plate of a motor controller easily resonates with the frequency of external exciting force and generates radiation noise, structural fatigue is caused by long-time resonance, and the service life of the controller is shortened.
In order to achieve the above object, an aspect of the present utility model provides a motor controller upper cover structure, the upper cover structure comprising: an upper cover plate body; and the mute plate is arranged at the top of the upper cover plate body, wherein the mute plate is configured into a thin plate structure with at least three layers, and the damping coefficient of the middle layer material is larger than that of the outer layer material.
Preferably, the mute plate is connected with the upper cover plate body in a bonding or riveting or screwing mode.
Preferably, the middle layer material of the mute plate is a viscoelastic material, and the outer layer material of the mute plate is metal; and a plating layer is coated on the surface of the mute plate.
A second aspect of the present utility model provides a motor controller comprising: a controller body; and the upper cover plate structure is arranged at the top of the controller body.
Preferably, a plurality of first positioning holes are formed in the edge of the top of the upper cover plate body, and the upper cover plate body is connected with the shell at the top of the controller body in a matched mode through the first positioning pieces.
Preferably, the first positioning member is a bolt.
Preferably, the upper cover plate body is provided with at least one second positioning hole, and the upper cover plate body is connected with the shell at the top of the controller body in cooperation with a second positioning piece.
Preferably, the second positioning member is a bolt; and the mute plate is provided with an avoidance hole corresponding to the position of the second positioning hole.
Preferably, the top of the upper cover plate body is provided with at least one diversion trench penetrating through the second positioning hole, and the diversion trench extends to the edge of the upper cover plate body and penetrates through the edge of the upper cover plate body; the mute plate is provided with a plurality of radiating holes and/or bulges, and the radiating holes are arranged along the direction of the diversion trench.
A third aspect of the utility model provides a vehicle comprising the motor controller.
Through the technical scheme, the mute plate with the at least three-layer thin plate structure is arranged at the top of the upper cover plate body, high damping is provided through the difference of damping coefficients of the middle layer material and the outer layer material, mechanical energy generated by exciting force resonance transmitted to the mute plate by the power assembly is converted into heat energy for dissipation, resonance of the upper cover plate body is effectively restrained, and then the noise reduction effect is achieved.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an upper cover plate of a motor controller according to the present utility model;
FIG. 2 is an exploded view of the overall structure of the upper cover plate structure of the motor controller of the present utility model;
FIG. 3 is a schematic diagram of the overall structure of the motor controller of the present utility model;
fig. 4 is an exploded view of the overall structure of the upper cover plate structure of the motor controller according to the embodiment of the present utility model.
Description of the reference numerals
1, an upper cover plate body;
101 a first positioning hole; 102 a second positioning hole; 103 diversion trenches;
2, a mute plate;
201 avoiding the hole; 202 heat dissipation holes;
3 a controller body.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present utility model more apparent, the following detailed description of exemplary embodiments of the present utility model will be given with reference to the accompanying drawings, and it is apparent that the described embodiments are only some embodiments of the present utility model, not exhaustive of all embodiments. In addition, the embodiments of the present utility model and the features of the embodiments may be combined with each other without collision.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use of the product of the application, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model.
In the prior art, the middle area of the upper cover plate of the motor controller is large, the first-order mode of the cover plate structure is low, resonance is easy to occur with the frequency of external exciting force, radiation noise is generated, structural fatigue is caused by long-time resonance, and the service life of the controller is further shortened.
Referring to fig. 1 and 2, fig. 1 is a schematic diagram of the overall structure of the present utility model, and fig. 2 is an exploded view of the overall structure of the present utility model, the present utility model provides an upper cover plate structure of a motor controller, which includes an upper cover plate body 1 and a mute plate 2, wherein the upper cover plate body 1 is generally made of metal material by die casting, and the inside of the upper cover plate body 1 can be provided with structural features with complex structure, and the mute plate 2 is arranged on the top of the upper cover plate body 1.
For example, in some embodiments, the mute plate 2 may be connected to the upper cover body 1 by bonding or riveting or screwing, wherein the bonding connection avoids the collision between the bottom of the mute plate 2 and the top of the upper cover body 1, and the noise reduction effect is better.
The mute plate 2 is configured as a thin plate structure with at least three layers, and the damping coefficient of the middle layer material is larger than that of the outer layer material, where the damping coefficient is generally used to indicate the energy loss degree of an object when the object vibrates, when the object is in a vibration state, a part of energy is consumed to counteract the vibration, in general, the larger the damping coefficient is, the smaller the vibration amplitude of the object is, the faster the damping speed of the vibration is, and conversely, the smaller the damping coefficient is, the larger the vibration amplitude of the object is, the slower the damping speed of the vibration is, so that the material vibration can be effectively reduced by adding a material with a large damping coefficient to the material with a small damping coefficient.
Obviously, when the damping coefficient of the middle layer material is far greater than that of the outer layer material, the damping effect is better, meanwhile, the mute plate 2 can be configured into a four-layer or more-layer thin plate structure, namely, materials with different damping coefficients are stacked together, so that better damping can be realized, the structure is relatively more complex, the load can be increased, and the mute plate can be selected by a person skilled in the art according to actual conditions.
According to the utility model, the mute plate 2 with at least three layers of thin plate structures is arranged at the top of the upper cover plate body 1, high damping is provided through the difference of damping coefficients of the middle layer material and the outer layer material, mechanical energy generated by exciting force resonance transmitted to the mute plate 2 by the power assembly is converted into heat energy for dissipation, resonance of the upper cover plate body 1 is effectively restrained, and further, the noise reduction effect is achieved.
Illustratively, in some embodiments, the intermediate layer material of the sound-damping plate 2 is a viscoelastic material, where the viscoelastic material includes, but is not limited to, asphalt, water-soluble substances, latex, and epoxy, and the outer layer material of the sound-damping plate 2 is a metal, where the metal includes, but is not limited to, aluminum, steel, and iron, and it is apparent that the metallic material of the outer layer can ensure the structural strength and rigidity of the sound-damping plate 2, while facilitating the installation and removal of the sound-damping plate 2.
In addition, in some embodiments, the surface of the mute plate 2 is coated with a plating layer, and the plating layer has good electrical insulation property and water-proof property, so that the surface of the mute plate 2 can be prevented from being corroded.
The utility model also provides a motor controller, please refer to fig. 3, fig. 3 is a schematic diagram of the overall structure of the motor controller of the utility model, the motor controller includes a controller body 3 and an upper cover plate structure, the upper cover plate structure is arranged at the top of the controller body 3, it can be understood that the beneficial effects achieved by the upper cover plate structure can be achieved, and therefore, the motor controller is not repeated.
Considering the specific connection manner of the upper cover structure and the controller body 3, please refer to fig. 2, in some embodiments, a plurality of first positioning holes 101 are provided at the top edge of the upper cover body 1, and the upper cover body 1 is connected with the housing at the top of the controller body 3 by matching with the first positioning members, and in an example, a plurality of first positioning holes 101 are provided at the four edges of the upper cover body 1 at equal intervals.
It should be noted that, the above-mentioned positions of the first positioning holes 101 are only used for illustration, and should not be construed as limiting the scope of the embodiments of the present utility model, in practical use, the positions of the first positioning holes 101 may be distributed in other positions according to actual needs, for example, the positions of the first positioning holes 101 may be disposed on only two corresponding sides, or may be disposed on three sides of four sides of the upper cover body 1.
Specifically, in some embodiments, the first positioning member is a bolt, and the bolt connection structure is simple, convenient to assemble and disassemble, and suitable for practical use.
In order to further reduce resonance, please continue to refer to fig. 2, in some embodiments, the upper cover body 1 is provided with at least one second positioning hole 102, and the upper cover body 1 and the housing at the top of the controller body 3 are connected by matching with a second positioning member, specifically, the second positioning member and the second positioning hole 102 may be disposed in a region of the upper cover body 1 where the longitudinal amplitude is the largest, that is, generally in a middle position of the upper cover body 1, where the second positioning member limits the distance between the middle position of the upper cover body 1 and the housing at the top of the controller body 3, which is favorable for improving the mode of the upper cover body 1, reducing the longitudinal amplitude, and effectively reducing resonance and noise radiation of the upper cover body 1, thereby improving NVH performance.
It should be noted that the above-mentioned positions and numbers of the second positioning holes 102 are only for illustration, and should not be construed as limiting the scope of the embodiments of the present utility model, in practical use, the positions and numbers of the second positioning holes 102 may be distributed in other positions according to practical needs, for example, the second positioning holes 102 may be three, or four, in a triangular layout at the middle position of the upper cover body 1, and the second positioning holes 102 may be four, or four, in a quadrilateral layout at the middle position of the upper cover body 1.
Specifically, in some embodiments, the second positioning member is a bolt, the mute plate 2 is provided with a avoiding hole 201 corresponding to the position of the second positioning hole 102, and when the mute plate is installed, the bolt sequentially passes through the avoiding hole 201 and the second positioning hole 102, and then is screwed to fix, so that the mute plate is simple in structure and convenient to assemble and disassemble.
Considering that water flow and dust are easy to accumulate on the surface of the upper cover plate body 1 through the avoiding holes 201 for long-time use, cleaning is inconvenient, please continue to refer to fig. 2, in some embodiments, at least one diversion trench 103 penetrating through the second positioning holes 102 is arranged at the top of the upper cover plate body 1, the diversion trench 103 extends to the edge of the upper cover plate body 1 and penetrates through the edge, and accumulated water or dust on the surface of the upper cover plate body 1 can be discharged to two ends along the diversion trench 103, so that the trouble that the mute plate 2 needs to be removed and cleaned again under the conventional condition is avoided.
It should be noted that the above positions and numbers of the guide grooves 103 are only used for illustration, and should not be construed as limiting the scope of the embodiments of the present utility model, in actual use, the positions and numbers of the guide grooves 103 may be distributed in other positions according to actual needs, for example, two guide grooves 103 may be provided, which are converged in the second positioning hole 102 in an X shape, and a plurality of guide grooves 103 may be provided, where one guide groove 103 passes through the second positioning hole 102, and other guide grooves 103 intersect with the guide groove 103 passing through the second positioning hole 102.
In addition, considering that a large amount of heat can be transferred upwards during the working process of the motor controller, and the heat conductivity coefficient of the damping layer in the middle of the mute plate 2 is low, referring to fig. 4, fig. 4 is an exploded view of the overall structure of the upper cover plate structure of the motor controller in the embodiment of the utility model, in some embodiments, the mute plate 2 is provided with a plurality of heat dissipation holes 202 and/or protrusions (not shown), the heat dissipation holes 202 can avoid heat accumulation between the mute plate 2 and the upper cover plate body 1, and the overall load can be reduced, so that the heat dissipation holes 202 are arranged along the guide grooves 103 so as to facilitate water accumulation or dust accumulation falling from the heat dissipation holes 202 on the surface of the upper cover plate body 1 can be discharged along the guide grooves 103 to two ends, and the protrusions can enlarge the heat dissipation area of the mute plate 2 and can also avoid heat accumulation.
It should be noted that, the fact that the mute plate 2 is provided with a plurality of heat dissipation holes 202 and/or protrusions means that the mute plate 2 may be provided with only the heat dissipation holes 202, the mute plate 2 may be provided with only the protrusions, or the mute plate 2 may be provided with both the heat dissipation holes 202 and the protrusions, which can be selected by a person skilled in the art according to practical situations.
The utility model also provides a vehicle, which comprises the motor controller, and the beneficial effects achieved by the motor controller can be achieved, so that the vehicle is not repeated.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit and scope of the utility model, and it is intended that the utility model encompass such modifications and variations as fall within the scope of the appended claims and their equivalents.
Claims (10)
1. An upper cover plate structure of a motor controller, which is characterized in that the upper cover plate structure comprises:
an upper cover plate body (1); and
the mute plate (2) is arranged at the top of the upper cover plate body (1);
wherein the mute plate (2) is configured into a sheet structure of at least three layers, and the damping coefficient of the middle layer material is larger than that of the outer layer material.
2. Upper cover structure according to claim 1, characterized in that the mute plate (2) is connected to the upper cover body (1) by means of bonding or riveting or screwing.
3. The upper cover structure according to claim 1, characterized in that the intermediate layer material of the mute plate (2) is a viscoelastic material, and the outer layer material of the mute plate (2) is a metal;
the surface of the mute plate (2) is coated with a plating layer.
4. A motor controller, the motor controller comprising:
a controller body (3); and
a top cover structure as claimed in any one of claims 1 to 3, which is provided on top of the controller body (3).
5. The motor controller according to claim 4, wherein a plurality of first positioning holes (101) are formed at the top edge of the upper cover plate body (1), and the upper cover plate body (1) is connected with the housing at the top of the controller body (3) by being matched with first positioning pieces.
6. The motor controller of claim 5 wherein the first positioning member is a bolt.
7. The motor controller according to claim 4, wherein the upper cover plate body (1) is provided with at least one second positioning hole (102), and the upper cover plate body (1) and the shell at the top of the controller body (3) are connected by matching with a second positioning piece.
8. The motor controller of claim 7 wherein the second positioning member is a bolt;
and the mute plate (2) is provided with an avoidance hole (201) corresponding to the second positioning hole (102).
9. The motor controller according to claim 8, wherein at least one diversion trench (103) penetrating through the second positioning hole (102) is arranged at the top of the upper cover plate body (1), and the diversion trench (103) extends to the edge of the upper cover plate body (1) and penetrates through the edge;
the mute plate (2) is provided with a plurality of radiating holes (202) and/or bulges, and the radiating holes (202) are arranged along the direction of the diversion trench (103).
10. A vehicle, characterized in that the vehicle comprises a motor controller according to any one of claims 4 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320729248.6U CN219999806U (en) | 2023-04-03 | 2023-04-03 | Upper cover plate structure of motor controller, motor controller and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320729248.6U CN219999806U (en) | 2023-04-03 | 2023-04-03 | Upper cover plate structure of motor controller, motor controller and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219999806U true CN219999806U (en) | 2023-11-10 |
Family
ID=88605006
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320729248.6U Active CN219999806U (en) | 2023-04-03 | 2023-04-03 | Upper cover plate structure of motor controller, motor controller and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219999806U (en) |
-
2023
- 2023-04-03 CN CN202320729248.6U patent/CN219999806U/en active Active
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