Damping enhancement of a bubble sheet component

Abstract

Damping enhancement of a bubble sheet component is disclosed. A damping panel includes a first metal and a second metal. The first metal has a first surface and a second surface opposite the first surface. The second metal portion has a third surface and a fourth surface opposite the third surface. A fixed region is a region where the second surface of the first metal is fixed to the third surface of the second metal. An un-fixed region is a region where the second surface is not fixed to the third surface. In the un-fixed region, a cavity is provided between the second surface and the third surface. A damping material is provided to at least one of: at least a portion of the cavity on the second surface, at least a portion of the cavity on the third surface, at least a portion of the first surface, and at least a portion of the fourth surface.

Description

Technical Field

[0001] This invention discloses a damping plate and a method for manufacturing a damping plate. Background Technology

[0002] The information provided in this section is for the purpose of presenting the contents of this disclosure in a general manner. The work of the currently attributed inventors (to the extent described in this section, and in any aspect that, at the time of filing, did not otherwise constitute a prior art) is neither expressly nor implicitly considered to be prior art to this disclosure.

[0003] This disclosure relates to a damping enhancement method, and more specifically, to a damping enhancement method for bubble sheet components.

[0004] Vehicles typically include multiple components that generate noise, vibration, or acoustic harshness (NVH). In addition, NVH can also be generated by the vehicle's contact with and movement along road surfaces.

[0005] NVH (Noise, Vibration, and Harshness) can radiate into the interior of a motor vehicle and make the ride unpleasant for passengers. Damping can be used to reduce NVH. However, available damping solutions are not always effective.

[0006] This disclosure provides effective damping enhancement while minimizing the increase in weight of the motor vehicle. Summary of the Invention

[0007] An example of a damping plate includes a first metal portion and a second metal portion. The first metal portion has a first surface and a second surface opposite to the first surface. The second metal portion has a third surface and a fourth surface opposite to the third surface. A fixed region is the area where the second surface of the first metal portion is fixed to the third surface of the second metal portion. A non-fixed region is the area where the second surface of the first metal portion is not fixed to the third surface of the second metal portion. A cavity is disposed in the non-fixed region and between the second surface of the first metal portion and the third surface of the second metal portion. Damping material is disposed in at least one of the following: at least a portion but less than all of the cavity on the second surface of the first metal portion; at least a portion but less than all of the cavity on the third surface of the second metal portion; at least a portion of the first surface of the first metal portion; and at least a portion of the fourth surface of the second metal portion.

[0008] In one instance, damping material is disposed on less than all of the non-fixed areas of the first surface of the first metal portion.

[0009] In one example, damping material is disposed over the entire non-fixed area on the first surface of the first metal portion.

[0010] In one example, the damping material is applied to less than all of the non-fixed areas on the fourth surface of the second metal portion.

[0011] In one example, the damping material is disposed on the entire non-fixed area of ​​the fourth surface of the second metal part.

[0012] In one instance, damping material filled the entire cavity.

[0013] In one example, the first metal part and the second metal part are made of aluminum.

[0014] In one example, the first metal part and the second metal part are made of magnesium.

[0015] In one example, the first metal part and the second metal part are welded together at a fixed area.

[0016] Examples of damping systems include an inverter housing and an inverter. The inverter is housed within the inverter housing and includes a switch configured to connect the motor to a power source and disconnect the motor from the power source. A damping plate from any of the preceding paragraphs is disposed on the inverter housing.

[0017] An example of a method for manufacturing a damping plate is provided. The method includes obtaining a first metal portion having a first surface and a second surface opposite to the first surface. The method includes obtaining a second metal portion having a third surface and a fourth surface opposite to the third surface. The method includes applying the third surface of the second metal portion to the second surface of the first metal portion. The method includes fixing the first metal portion to the second metal portion to create a fixed region, and not fixing the first metal portion to the second metal portion to create a non-fixed region. The method includes injecting gas into the non-fixed region, thereby creating a cavity in the non-fixed region between the second and third surfaces. The method includes applying a damping material to at least one of: at least a portion of the second surface within the cavity; at least a portion of the third surface within the cavity; at least a portion of the first surface of the first metal portion; and at least a portion of the fourth surface of the second metal portion.

[0018] In one instance, fixing includes welding.

[0019] In one example, the first metal part and the second metal part are made of aluminum.

[0020] In one example, the first metal part and the second metal part are made of magnesium.

[0021] In one example, the gas is air.

[0022] In one instance, the application of damping material and the injection of gas occur simultaneously.

[0023] In one instance, less than all of the non-fixed area on the first surface of the first metal portion is applied to the damping material.

[0024] In one example, damping material is applied to the entire non-fixed region on the first surface of the first metal portion.

[0025] In one instance, less than all of the non-fixed areas on the fourth surface of the second metal portion are applied to the damping material.

[0026] In one instance, damping material is applied to the entire non-fixed region on the fourth surface of the second metal portion.

[0027] The present invention discloses the following embodiments:

[0028] Option 1. Damping plate, including:

[0029] The first metal portion has a first surface and a second surface opposite to the first surface;

[0030] The second metal portion has a third surface and a fourth surface opposite to the third surface;

[0031] A fixed region, wherein the second surface of the first metal portion is fixed to the third surface of the second metal portion;

[0032] Non-fixed region, wherein the second surface of the first metal portion is not fixed to the third surface of the second metal portion;

[0033] A cavity, the cavity being disposed in the non-fixed region and between the second surface of the first metal portion and the third surface of the second metal portion; and

[0034] A damping material, wherein the damping material is disposed in at least one of the following:

[0035] At least a portion but less than all of the cavities on the second surface of the first metal portion;

[0036] At least a portion but less than all of the cavity on the third surface of the second metal portion;

[0037] At least a portion of the first surface of the first metal portion; and

[0038] At least a portion of the fourth surface of the second metal portion.

[0039] Option 2. The damping plate according to embodiment 1, wherein the damping material is disposed on less than all of the non-fixed areas of the first surface of the first metal portion.

[0040] Option 3. The damping plate according to embodiment 1, wherein the damping material is disposed on the entire non-fixed area of ​​the first surface of the first metal portion.

[0041] Option 4. The damping plate according to embodiment 1, wherein the damping material is disposed on less than all of the non-fixed areas of the fourth surface of the second metal portion.

[0042] Option 5. The damping plate according to embodiment 1, wherein the damping material is disposed on the entire non-fixed area of ​​the fourth surface of the second metal portion.

[0043] Option 6. The damping plate according to embodiment 1, wherein the damping material fills the entire cavity.

[0044] Option 7. The damping plate according to embodiment 1, wherein the first metal portion and the second metal portion are made of aluminum.

[0045] Option 8. The damping plate according to embodiment 1, wherein the first metal portion and the second metal portion are made of magnesium.

[0046] Option 9. The damping plate according to embodiment 1, wherein the first metal portion and the second metal portion are welded together in the fixed area.

[0047] Option 10. Damping system, including:

[0048] Inverter housing;

[0049] An inverter, disposed within the inverter housing, includes a switch configured to connect the motor to a power source and disconnect the motor from the power source; and

[0050] The damping plate described in Implementation Scheme 1 is disposed on the inverter housing.

[0051] Option 11. A method for manufacturing a damping plate, comprising:

[0052] A first metal portion having a first surface and a second surface opposite to the first surface is obtained;

[0053] A second metal portion having a third surface and a fourth surface opposite to the third surface is obtained;

[0054] The third surface of the second metal portion is applied to the second surface of the first metal portion;

[0055] The first metal part is fixed to the second metal part to create a fixed area, and the first metal part is not fixed to the second metal part to create a non-fixed area.

[0056] Gas is injected into the non-fixed region, thereby creating a cavity between the second and third surfaces in the non-fixed region; and

[0057] Applying damping material to at least one of the following:

[0058] At least a portion but less than all of the second surface within the cavity;

[0059] At least a portion but less than all of the third surface within the cavity;

[0060] At least a portion of the first surface of the first metal portion; and

[0061] At least a portion of the fourth surface of the second metal portion.

[0062] Option 12. The method according to embodiment 11, wherein the fixing includes welding.

[0063] Option 13. The method according to embodiment 11, wherein the first and second metal portions are made of aluminum.

[0064] Option 14. The method described in embodiment 11, wherein the first and second metal portions are made of magnesium.

[0065] Option 15. The method according to embodiment 11, wherein the gas is air.

[0066] Option 16. The method according to implementation scheme 11, wherein the application of damping material and the injection of gas occur simultaneously.

[0067] Option 17. The method according to embodiment 11, wherein the damping material is applied to less than all of the non-fixed regions on the first surface of the first metal portion.

[0068] Option 18. The method according to embodiment 11, wherein damping material is applied to the entire non-fixed region on the first surface of the first metal portion.

[0069] Option 19. The method according to embodiment 11, wherein the damping material is applied to less than all of the non-fixed regions on the fourth surface of the second metal portion.

[0070] Option 20. The method according to embodiment 11, wherein the damping material is applied to the entire non-fixed region on the fourth surface of the second metal portion.

[0071] Further applications of this disclosure will become apparent from the detailed description, claims, and drawings. The detailed description and specific examples are intended for illustrative purposes only and are not intended to limit the scope of this disclosure. Attached Figure Description

[0072] This disclosure will be understood more fully from the detailed description and accompanying drawings, in which:

[0073] Figure 1 This is a top view of the damping plate;

[0074] Figure 2 yes Figure 1 A perspective cross-sectional view of the damping plate;

[0075] Figure 3 It is a perspective cross-sectional view of the damping plate, wherein the damping material is applied to the entire cavity;

[0076] Figure 4 yes Figure 3 A perspective cross-sectional view of the damping plate, in which damping material is applied to less than all of the cavity;

[0077] Figure 5 It is a top view of the damping plate, in which damping material is applied to the first surface of the second metal for the entire non-fixed area;

[0078] Figure 6 yes Figure 5 A perspective cross-sectional view of the damping plate;

[0079] Figure 7 yes Figure 5 A top view of a damping plate, wherein damping material is applied to less than all of the first surface of the second metal for the non-fixed area.

[0080] Figure 8 yes Figure 7 A perspective cross-sectional view of the damping plate;

[0081] Figure 9 It is a bottom view of another damping plate, in which damping material is applied to the second surface of the second metal for the entire non-fixed area;

[0082] Figure 10 yes Figure 9 A bottom view of a damping plate, wherein damping material is applied to a second surface of a second metal for less than all of the non-fixed area;

[0083] Figure 11 It is a diagram showing the first damping curve of the first damping plate, the second damping curve of the second damping plate, and the third damping curve of the third damping plate;

[0084] Figure 12 It is a diagram showing the first damping curve of the first damping plate, the second damping curve of the second damping plate, and the third damping curve of the third damping plate;

[0085] Figure 13 It is a diagram showing the first damping curve of the first damping plate, the second damping curve of the second damping plate, and the third damping curve of the third damping plate;

[0086] Figure 14 This is a flowchart illustrating a method for manufacturing a damping plate; and

[0087] Figure 15 This is a functional block diagram and side view of an exemplary damping system.

[0088] In the accompanying drawings, reference numerals may be used repeatedly to identify similar and / or identical elements. Detailed Implementation

[0089] Inverters can be used to apply power from a power source to a motor. For example, an inverter can be connected between a direct current (DC) bus and a motor. An inverter includes a switch that can be switched to convert DC power into alternating current (AC) power for application to the motor.

[0090] This application relates to damping enhancement using bubble sheets (damping plates). The damping plates can be disposed within a vehicle. More specifically, the damping plates can be adhered to or attached to any component in the vehicle that generates noise, vibration, or acoustic harshness (NVH). For example, the damping plate can be disposed on the inverter cover (inverter cover) of the vehicle. In another example, the damping plate can be disposed on the engine hood of the vehicle. In yet another example, the damping plate can be disposed on the vehicle dashboard or the vehicle floor. In yet another example, the damping plate can be disposed on the battery pack tray of the vehicle. Additionally, the damping plates can be similarly applied to non-vehicle components that generate NVH.

[0091] Reference Figure 1-2 A damping plate 20 is provided. The damping plate 20 may include a first metal portion 24, a second metal portion 26, and a cavity 28 disposed between the first metal portion 24 and the second metal portion 26. The first and second metal portions 24 and 26 may be made of metal, such as aluminum, magnesium, or other suitable metals.

[0092] The first metal portion 24 may include a first end (side) 30, a second end (side) 32 opposite to the first end 30, and lateral ends (sides) 34 and 36 connecting the first end 30 and the second end 32. The lateral sides 34 and 36 are opposite to each other.

[0093] Similarly, the second metal portion 26 may include a first end (side) 38, a second end (side) 40 opposite to the first end 38, and lateral ends (sides) 42, 44 connecting the first end 38 and the second end 40. The lateral sides 38, 40 are opposite to each other. Although the first and second metal portions 24, 26 are shown as rectangular, they may each be formed in any shape. For example, the first metal portion 24 and the second metal portion 26 may be formed in a circular shape. In another example, the first metal portion 24 may be formed in a circular shape, and the second metal portion 26 may be formed in a square shape.

[0094] The first metal portion 24 further includes a first surface 46 (i.e., an outer surface) and a second surface 48 (i.e., an inner surface) opposite to the first surface 46. The second metal portion 26 includes a first surface 50 (i.e., an outer surface) and a second surface 52 (i.e., an inner surface) opposite to the first surface 50. The first and second metal portions 24 and 26 may be metal sheets before forming the cavity 28.

[0095] The first and second metal portions 24, 26 are fixed together at certain locations to define a fixed region 54. The fixed region 54 includes the area where the first and second metal portions 24, 26 are joined together. Other locations where the first and second metal portions 24, 26 are not joined together provide a non-fixed region 56.

[0096] The first, second, and lateral ends 30, 32, 34, and 36 of the first metal portion 24 can be positioned adjacent to the first, second, and lateral ends 38, 40, 42, and 44 of the second metal portion 26, respectively. The second surface 48 of the first metal portion 24 can face the second surface 52 of the second metal portion 26 and contact the second surface 52 of the second metal portion 26 at the fixed region 54. The second surface 48 of the first metal portion 24 and the second surface 52 of the second metal portion 26 can be fixed together at the fixed region 54 and are not fixed at the non-fixed region 56.

[0097] The fixed region 54 can be a single, continuous fixed region or comprise multiple fixed regions. The fixed region 54 may have a suitable shape and size for the application. In the illustrated example, the fixed region 54 is formed as multiple fixed regions. The fixed region 54 includes a first (fixed) region 58 extending in a substantially rectangular shape around the periphery of the second metal portion 26, and includes a plurality of second regions 60 extending substantially linearly. While an example number of fixed regions is shown, this application is also applicable to other numbers and configurations of fixed regions. The fixed regions may extend in other directions and be uniformly or non-uniformly spaced from each other. For example, in the illustrated embodiment, the plurality of second regions 60 are located inside the first region 58. The plurality of second regions 60 extend in a direction between the first end 38 and the second end 40 of the second metal portion 26, are substantially uniformly spaced, and extend substantially parallel to each other.

[0098] A non-fixed region 56 may form a cavity 28 between the second surface 48 of the first metal portion 24 and the second surface 52 of the second metal portion 26. The cavity 28 may extend toward the first metal portion 24, the second metal portion 26, or a combination of the first and second metal portions 24 and 26. For example, Figure 2 The cavity 28 shown extends toward the second metal portion 26. In addition, the non-fixed region 56 may be a continuous non-fixed region or include multiple non-fixed regions, depending on the positioning and configuration of the fixed region 54.

[0099] The non-fixed region 56 may have a suitable shape and size for the application. In instances of multiple non-fixed regions, the non-fixed regions may be positioned in a suitable configuration. Although a number of instances of non-fixed regions have been shown, this application is also applicable to other numbers of non-fixed regions and different arrangements and configurations of non-fixed regions, such as extending in other directions and being uniformly or non-uniformly spaced from each other.

[0100] In the illustrated example, the non-fixed region 56 includes a first portion 62 that joins with a plurality of second portions 64 to form a continuous region. The first portion 62 is formed in a substantially rectangular shape and is positioned adjacent to a first region 58 of the fixed region 54, while the second portions 64 are formed in a substantially linear shape and are positioned adjacent to a second region 60 of the fixed region 54. More specifically, the plurality of second portions 64 have seven parts, including first, second, third, fourth, fifth, sixth, and seventh longitudinal portions 66, 68, 70, 72, 74, 76, and 78. However, the number of second portions 64 can vary, including more than seven and less than seven.

[0101] Damping material may be disposed on the first metal portion 24, the second metal portion 26, or a combination of the first and second metal portions 24 and 26. More specifically, the damping material may contact the first surface 46 of the first metal portion 24, the second surface 48 of the first metal portion 24, the first surface 50 of the second metal portion 26, the second surface 52 of the second metal portion 26, or a combination thereof. In some embodiments, the damping material may contact the location of the damping plate 20 that identifies high vibrational energy. The damping material may be, for example, acrylic, propylene oxide, ethylene oxide, polyolefin elastomers, silicone, a combination of two or more of the above, or another suitable damping material.

[0102] Reference Figures 3 to 4 The damping plate 120 may include damping material 122 disposed within (filling) the cavity 128 of the damping plate 120. The damping plate 120 may be the same as the damping plate 20, having the added damping material 122. Thus, the damping plate 120 includes a first metal portion 124 fixed to the second metal portion 126, and a non-fixed region 156 including a first portion 162 and a plurality of second portions 164.

[0103] like Figure 3 As shown, damping material 122 may be disposed within (and fill) the entire cavity 128. For example... Figure 4 As shown, damping material 122 may be disposed within less than all of cavity 128. For example, damping material 122 may be disposed within all or less of the first portion 162 of non-fixed region 156, within all or less of the second portion 164 of non-fixed region 156, or a combination thereof.

[0104] exist Figure 4 In this example, damping material 122 is disposed entirely within the first portion 162 of the non-fixed region 156, and entirely within the second, fourth, and sixth longitudinal portions 168, 172, and 176. Air (or another gas) is disposed within the first, third, fifth, and seventh longitudinal portions 166, 170, 174, and 178 of the non-fixed region 156. Damping material 122 may be applied to the second portion 164 of the non-fixed region 156 in an alternating or alternative configuration.

[0105] Reference Figures 5 to 8 The damping plate 220 may include damping material 222 disposed on a first surface 250 (i.e., outer surface) of the second metal portion 226. The damping plate 220 may be identical to the damping plate 20, having the added damping material 222. Therefore, the damping plate 220 includes a first metal portion 224 fixed to the second metal portion 226 at a fixed region, and a non-fixed region 256 including a first portion 262 and a plurality of second portions 264. (See reference...) Figure 5-6The damping material 222 may be disposed on the first surface 250 of the second metal portion 226 over the entire non-fixed region 256.

[0106] Reference Figure 7-8 Damping material 222 may be disposed on the first surface 250 of the second metal portion 226, for less than all of the non-fixed region 256. For example, damping material 222 may be disposed on all or less of the first portion 262 of the non-fixed region 256, all or less of the second portion 264 of the non-fixed region 256, or a combination thereof. Figures 7 to 8 In this example, damping material 222 is applied to the entire first portion 262 of the non-fixed region 256 and to the entirety of the second, fourth, and sixth longitudinal portions 268, 272, and 276. Damping material 222 is not applied to the longitudinal portions of the non-fixed region 256 between the second, fourth, and sixth longitudinal portions 268, 272, and 276. Damping material 222 may be applied to the second portion 264 of the non-fixed region 256 in an alternating configuration or in another suitable configuration. In some examples, damping material 222 is applied to the portions of the non-fixed region 256 that identify high vibrational energy.

[0107] Reference Figure 9-10 The damping plate 320 may include damping material 322 disposed on a second surface 352 (i.e., inner surface) of the second metal portion 326. The damping plate 320 may be the same as the damping plate 20, having the added damping material 322. Thus, the damping plate 320 includes a first metal portion 324 fixed to the second metal 326 at a fixed region, and a non-fixed region 356 including a first portion 362 and a plurality of second portions 364.

[0108] Reference Figure 9 The damping material 322 can be disposed on the second surface 352 of the second metal 326, for the entire non-fixed region 356. (Refer to...) Figure 10Damping material 322 may be disposed on the second surface 352 of the second metal 326 for less than all of the non-fixed region 356. For example, damping material 322 may be disposed on all or less of the first portion 362 of the non-fixed region 356, all or less of the second portion 364 of the non-fixed region 356, or a combination thereof. In the illustrated embodiment, damping material 322 is disposed on all of the first portion 362 of the non-fixed region 356 and all of the first, third, fifth, and seventh longitudinal portions 366, 370, 374, and 378. Damping material 322 is not disposed on the longitudinal portions of the non-fixed region 356 between the first, third, fifth, and seventh longitudinal portions 366, 370, 374, and 378 of the non-fixed region 356. Damping material 322 may be applied to the second portion 364 of the non-fixed region 356 in an alternating configuration or in another suitable configuration.

[0109] Figure 11 The first damping curve 500, the second damping curve 502, and the third damping curve 504 of damping plates 20, 120, and 320 are shown respectively. More specifically, the first damping curve 500 represents the damping curve of damping plate 20 ( Figure 1-2 The damping performance of the cavity 128 is shown in the case where no damping material is applied. The second damping curve 502 represents the damping performance when damping material 122 is applied to the entire cavity 128. Figure 3 The damping performance of the damping plate 120 is shown in the third damping curve 504, which represents the damping performance of the second surface 352 of the second metal 326 when the damping material 322 is applied to the entire non-fixed region 356 (e.g., ...). Figure 9 In the case of damping plate 320, the damping performance is as follows. Damping curves 500, 502, and 504 each track acceleration as a function of frequency. In other words, each of damping curves 500, 502, and 504 represents a frequency response function (FRF). Lower acceleration in response to frequency results in more favorable damping performance. As shown, the third damping curve 504 of damping plate 320 represents acceleration at a lower response frequency than both the first damping curve 500 and the second damping curve 502. In addition, the third damping curve 504 does not introduce any new vibrational energy transfer function not found in the first damping curve 500 and the second damping curve 502. Therefore, damping plate 320, with damping material 322 applied only to the second surface 352 of the second metal 326, can provide enhanced damping performance relative to damping plate 20 while utilizing less damping material than damping plate 120, with damping material 122 applied to the entire cavity 128.

[0110] Figure 12 The following are examples of methods for using, such as Figure 1-2 The damping plate 20 shown is as follows: Figure 5-6 The damping plate 220 shown and as Figure 7-8The damping curves 506, 508, and 510 of the damping plate 220 are shown. More specifically, the first damping curve 506 represents the damping performance of the damping plate 20 when no damping material is applied. The second damping curve 508 represents the damping performance of the damping plate 220 when damping material 222 has been applied to the first surface 250 of the second metal 226 for the entire non-fixed region 256. The third damping curve 510 represents the damping performance of the damping plate 220 when damping material 222 has been applied to less than all of the first surface 250 of the second metal 226 for the non-fixed region 256. The damping curves 506, 508, and 510 each track acceleration as a function of frequency. In other words, the damping curves 506, 508, and 510 each represent a frequency response function (FRF). Lower acceleration in response to frequency results in more favorable damping performance. As shown, the second damping curve 508 and the third damping curve 510 are comparable and represent accelerations with a lower response frequency than the first damping curve 506. Therefore, damping plate 220 provides enhanced damping compared to damping plate 20, and furthermore, when damping material 222 has been applied to less than all of the non-fixed region 256, damping plate 220 provides similar damping performance compared to when damping material 222 has been applied to the entire non-fixed region 256.

[0111] Figure 13 They are shown respectively Figure 1-2 The damping plate 20 shown Figure 9 The damping plate 320 shown and Figure 10The damping curves 512, 514, and 516 of the damping plate 320 are shown. More specifically, the first damping curve 512 represents the damping performance of the damping plate 20 when no damping material is applied. The second damping curve 514 represents the damping performance of the damping plate 320 when damping material 322 has been applied to the second surface 352 of the second metal 326 for the entire non-fixed region 356. The third damping curve 516 represents the damping performance of the damping plate 320 when damping material 322 has been applied to less than the entire second surface 352 of the second metal 326 for the non-fixed region 356. The damping curves 512, 514, and 516 each track acceleration as a function of frequency. In other words, the damping curves 512, 514, and 516 each represent a frequency response function (FRF). Lower acceleration at a lower response frequency results in more favorable damping performance. As shown in the figure, the second damping curve 514 and the third damping curve 516 are comparable. The second and third damping curves 514 and 516 show accelerations at lower response frequencies than the first damping curve 512 without introducing a new vibrational energy transfer function. Therefore, the damping plate 320 provides enhanced damping compared to the damping plate 20. Furthermore, the damping plate 320, with damping material 322 applied to less than all of the non-fixed region 356, provides similar damping performance as when the damping material 322 is applied to the entire non-fixed region 356.

[0112] Therefore, compared to a damping plate 20 without damping material, damping plates 220 and 320 with damping materials 222 and 322 allow for enhanced damping performance. Furthermore, when damping materials 222 and 322 are used in less than all of the non-fixed regions 256 and 356, damping plates 220 and 320 provide comparable results to when damping materials 222 and 322 are used in all of the non-fixed regions 256 and 356. Therefore, damping plates 220 and 320 with damping materials 222 and 322 applied to less than all of the non-fixed regions 256 and 356 can be used without the additional cost and weight of additional damping materials, while still achieving comparable damping performance.

[0113] In addition, applying damping material to the damping plate can result in enhanced stiffness performance. For example, damping plates 220 and 320 using damping materials 222 and 322 can provide enhanced stiffness performance compared to damping plate 20.

[0114] Reference Figure 14 A method 1000 for manufacturing a damping plate is provided. At 1100, the method may optionally include applying damping material to the surface of a first metal portion and / or the surface of a second metal portion. The surfaces of the first and second metal portions face each other and will later define the inner surface of a cavity.

[0115] At 1200, the method may include positioning the first and second metal portions adjacent to each other (e.g., one on top of the other). At 1300, the method may include securing the first and second metal portions to each other at selective locations to provide a fixed portion. The first and second metal portions are not secured together where damping material is applied. At 1400, the method may include injecting air (or another gas) between the first and second metal portions to create a cavity. The injection of air (or other gas) creates the cavity by causing at least one of the first and second metal portions to bubble outwards. At 1500, the method may include injecting damping material between the first and second metal portions. In various embodiments, the damping material may be injected simultaneously with the injection of air (or other gas).

[0116] The method for manufacturing the damping plate 1000 will now be described in more detail. The method pertains to... Figures 1 to 10 The method is described for damping plates 20, 120, 220, and 320. However, the method is equally applicable to other damping plates.

[0117] In 1100, method 1000 may optionally include applying a damping material to the second metal portion. For example, damping material 222 may be applied to the first surface 250 of the second metal portion 226. Figure 5-8 ), the second surface 352 of the second metal portion 226 Figure 9-10 The damping material may be applied to all or less all of the first or second surface, or a combination thereof. For example, damping material 222 may be applied to all of the first surface 250 of the second metal portion 226. Figure 5-6 The first surface 250 of the second metal portion 226 is less than all of ( Figure 7-8 ), the entirety of the second surface of the second metal portion 226 ( Figure 9 ) or less than all of the second surface of the second metal portion 226. Figure 10 ).

[0118] In method 1000 (1200), the method may include positioning a first metal portion relative to a second metal portion. Positioning may include placing a surface of the first metal portion into direct contact with a surface of the second metal portion. Positioning may also include positioning the first and / or second metal portions relative to another of the first and / or second metal portions according to a predetermined assembly instruction. For example, and referring to… Figure 1-2 The second surface 48 of the first metal portion 24 can be positioned to contact the second surface 52 of the second metal portion 26. Additionally, the first end 30 of the first metal portion 24 can be positioned at a predetermined distance from the first end 38 of the second metal portion 26. Positioning can be performed in a fixing device or clamp and may include clamping the first metal portion onto the second metal portion.

[0119] Back Figure 14 The method at 1300 may further include securing the first and second metal portions to each other at selective locations. This securing can be performed by adhering or welding the first metal portion to the second metal portion to create an airtight seal between the first and second metal portions. In some embodiments, securing can be performed by welding. The welds can be in the form of multiple welds or a single continuous weld. The number and location of the welds can depend on the size, shape, and complexity of the damping plate. For example, the welds can be substantially uniformly spaced apart and symmetrically positioned, or alternatively, non-uniformly spaced apart and asymmetrically positioned. One or more welds can be formed in another shape. Some examples of shapes include circular, linear, rectangular, etc. For example and reference Figure 1-2 Multiple welds are provided to secure the first and second metal portions 24, 26. Continuous welds (not shown) are provided around the periphery of the second metal portion 26. The continuous welds are formed in a substantially linear pattern at the lateral ends 42, 44 of the second metal portion 26, in a curved pattern at the second end 40 of the second metal portion 26, and in a wavy pattern at the first end 38 of the second metal portion 26, to form a first region 58. Additionally, multiple linear welds are formed in the direction between the first end 30 and the second end 32, are substantially uniformly spaced, and are symmetrically positioned to form multiple second regions 60.

[0120] Back Figure 14 Method 1000 at 1400 may include injecting air (or another gas) between the first and second metal portions. Injecting air (or another gas) between the first and second metal portions (e.g., via one or more non-fixed portions extending to an outer edge) allows the first metal portion, the second metal portion, or a combination of the first and second metal portions to deform away from each other at the non-fixed portions. The deformation of the first and / or second metal portions creates a cavity between the first and second metal portions. Depending on the location of the one or more fixed portions, the cavity may be a continuous cavity or multiple cavities. The cavity may be formed in any shape or size.

[0121] For example and refer to Figure 1-2 Air (or other gas) is injected into the non-fixed region 56 of the damping plate 20 to create a cavity 28 in the non-fixed region 56. The cavity 28 is a continuous cavity such that the non-fixed region 56 has a first portion 62 that engages with a plurality of second portions 64. The first portions 62 of the cavity 28 are formed in a substantially rectangular shape, and each second portion 64 is formed in a substantially linear shape.

[0122] Back Figure 14Method 1000 may optionally include, at 1500, injecting a damping material between the first and second metals. The damping material may be injected into the cavity. More specifically, the damping material may be injected into all or less of the cavity. For example and reference... Figure 3 Damping material 122 is injected into the entire cavity 128. In another example and reference Figure 4 Damping material 122 is injected into less than all of the cavity 128. More specifically, damping material 122 may be injected into all or less of the first portion 162 and all or less of the plurality of second portions 164. In various embodiments, damping material 122 may be injected simultaneously with air (or other gas) to create the cavity.

[0123] Figure 15 This is a functional block diagram and side view of an exemplary damping system. Inverter (or inverter module) 1504 includes switches for connecting motor 1508 to and disconnecting motor 1508 from power supply 1512, such as a DC bus or another suitable power source. Inverter 1504 is disposed within housing 1516. Damping plates (e.g., such as...) Figure 3-10 The damping plate 1520 is disposed on the housing 1516, for example, on the outer surface of the housing 1516. The damping plate 1520 attenuates noise and vibration generated by the inverter 1504, such as the switching of the switch.

[0124] The foregoing description is illustrative in nature and is in no way intended to limit this disclosure, its application, or use. The broad teachings of this disclosure can be implemented in various forms. Therefore, while this disclosure includes specific examples, its true scope should not be so limited, as other modifications will become apparent upon examination of the drawings, description, and appended claims. It should be understood that one or more steps within the method may be performed in different orders (or simultaneously) without altering the principles of this disclosure. Furthermore, although the various embodiments are described above as having certain features, any one or more of those features described with respect to any embodiment of this disclosure may be implemented in and / or combined with features of any other embodiment, even if such combination is not explicitly described. In other words, the described embodiments are not mutually exclusive, and substitution of one or more embodiments for each other remains within the scope of this disclosure.

[0125] Various terms are used to describe spatial and functional relationships between elements (e.g., between modules, circuit elements, semiconductor layers, etc.), including “connection,” “joint,” “coupled,” “adjacent,” “next to,” “on top,” “above,” “below,” and “set.” Unless explicitly described as “direct,” when a relationship between the first and second elements is described in the foregoing disclosure, the relationship can be a direct relationship in the absence of other intermediate elements between the first and second elements, but it can also be an indirect relationship in the presence of one or more intermediate elements (spatially or functionally) between the first and second elements. As used herein, at least one of the phrases A, B, and C should be interpreted as indicating logic using non-exclusive OR (A or (OR)B (OR) or C) and should not be interpreted as indicating “at least one of A, at least one of B, and at least one of C.”

Claims

1. Damping plate, including: The first metal portion has a first surface and a second surface opposite to the first surface; The second metal portion has a third surface and a fourth surface opposite to the third surface; A fixed region, wherein the second surface of the first metal portion is fixed to the third surface of the second metal portion; Non-fixed region, wherein the second surface of the first metal portion is not fixed to the third surface of the second metal portion; A cavity is disposed in the non-fixed area and between the second surface of the first metal portion and the third surface of the second metal portion; and A damping material, wherein the damping material is disposed in at least one of the following: At least a portion but less than all of the cavity on the second surface of the first metal portion; and At least a portion but less than all of the cavity on the third surface of the second metal portion; The fixed region comprises a plurality of linearly extending regions, which are evenly spaced apart from each other and parallel to each other; The fixed region comprises multiple regions such that the non-fixed region comprises multiple linearly extending regions, the multiple regions of the non-fixed region being evenly spaced apart from each other and parallel to each other, thereby making the cavity comprise multiple portions, the multiple portions of the cavity being evenly spaced apart from each other and parallel to each other. The damping material is disposed in the first part of the cavity, which has multiple sections, and the damping material is not disposed in the second part of the cavity. The cavity is provided with a first part of multiple sections containing damping material and a second part of multiple sections of a cavity without damping material, which are alternately arranged.

2. The damping plate according to claim 1, further comprising the damping material disposed on a non-fixed region of a portion of the first surface of the first metal portion, less than all of the portion.

3. The damping plate according to claim 1, further comprising the damping material disposed on the entire non-fixed area of ​​the first surface of the first metal portion.

4. The damping plate according to claim 1, further comprising less than all of the damping material disposed on a non-fixed region of the fourth surface of the second metal portion.

5. The damping plate according to claim 1, further comprising the damping material disposed on the entire non-fixed region of the fourth surface of the second metal portion.

6. The damping plate according to claim 1, wherein the first metal portion and the second metal portion are made of aluminum.

7. The damping plate according to claim 1, wherein the first metal portion and the second metal portion are made of magnesium.

8. The damping plate according to claim 1, wherein the first metal portion and the second metal portion are welded together in the fixed area.

9. Damping systems, including: Inverter housing; An inverter, disposed within the inverter housing, includes a switch configured to connect the motor to a power source and disconnect the motor from the power source; as well as The damping plate of claim 1 is disposed on the inverter housing.

10. A method for manufacturing a damping plate, comprising: A first metal portion having a first surface and a second surface opposite to the first surface is obtained; A second metal portion having a third surface and a fourth surface opposite to the third surface is obtained; The third surface of the second metal portion is applied to the second surface of the first metal portion; The first metal part is fixed to the second metal part to create a fixed area, and the first metal part is not fixed to the second metal part to create a non-fixed area. Gas is injected into the non-fixed region, thereby creating a cavity between the second surface and the third surface in the non-fixed region; as well as Applying damping material to at least one of the following: At least a portion but less than all of the second surface within the cavity; and At least a portion but less than all of the third surface within the cavity; The fixed region comprises a plurality of linearly extending regions, which are evenly spaced apart from each other and parallel to each other; The fixed region comprises multiple regions such that the non-fixed region comprises multiple linearly extending regions, the multiple regions of the non-fixed region being evenly spaced apart from each other and parallel to each other, thereby making the cavity comprise multiple portions, the multiple portions of the cavity being evenly spaced apart from each other and parallel to each other. The damping material is disposed in the first part of the cavity, which has multiple sections, and the damping material is not disposed in the second part of the cavity. The cavity is provided with a first part of multiple sections, which is equipped with damping material, and the cavity is provided with a second part of multiple sections, which is not equipped with damping material.

11. The method of claim 10, wherein the fixing includes welding.

12. The method of claim 10, wherein the first metal portion and the second metal portion are made of aluminum.

13. The method of claim 10, wherein the first metal portion and the second metal portion are made of magnesium.

14. The method of claim 10, wherein the gas is air.

15. The method of claim 10, wherein the application of the damping material and the injection of gas occur simultaneously.

16. The method of claim 10, wherein the damping material is applied to less than all of the non-fixed regions on the first surface of the first metal portion.

17. The method of claim 10, wherein the damping material is applied to the entire non-fixed region on the first surface of the first metal portion.

18. The method of claim 10, wherein the damping material is applied to less than all of the non-fixed regions on the fourth surface of the second metal portion.

19. The method of claim 10, wherein the damping material is applied to the entire non-fixed region on the fourth surface of the second metal portion.

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