Installation gaskets, wireless power transmission devices, and assembly methods

Abstract

This invention discloses a mounting gasket, a wireless power transmission device, and an assembly method. By forming a limiting protrusion on the mounting gasket between the coil module and the housing, the top of the limiting protrusion makes line or point contact with the coil module and / or the housing. This allows the limiting protrusion to limit the coil module during the pressure holding process. Furthermore, even if adhesive is applied to the limiting protrusion, little or no adhesive residue remains on the top of the limiting protrusion during the pressure holding process. This allows for better control of the height of the adhesive layer, ensuring the accuracy of the coil module's mounting position and the quality of the wireless power transmission device.

Description

Technical Field

[0001] This invention relates to the field of electronic device assembly technology, specifically to a mounting pad, a wireless power transmission device, and an assembly method. Background Technology

[0002] Adhesion is a common connection method in electronic devices. In some common bonding processes, an adhesive is applied to one workpiece, then another workpiece is placed on top and pressure is applied for a specific amount and time to allow the adhesive to cure and bond the two workpieces together, forming an adhesive layer. The thickness of the adhesive layer depends on the pressure applied during the holding period, which is difficult to control precisely. Furthermore, it is difficult to ensure that the pressure applied to different areas of the workpiece is uniform during the holding process, thus easily leading to uneven adhesive layer thickness. Therefore, it is difficult to guarantee the height positioning accuracy between the two workpieces during the bonding process. Summary of the Invention

[0003] The purpose of this invention is to provide an mounting pad, a wireless power transmission device, and an assembly method that can solve or improve at least some of the problems existing in the prior art.

[0004] In a first aspect, embodiments of the present invention provide a mounting pad for mounting a coil module to a housing. The mounting pad has a body having two first mounting surfaces disposed opposite each other along the thickness direction. One of the two first mounting surfaces is connected to the coil module via a first adhesive layer, and the other is connected to the housing via a second adhesive layer. At least one of the first mounting surfaces has at least one protruding limiting protrusion. The limiting protrusion has a root connected to the body and a top away from the root. The top is configured to make line contact or point contact with one of the coil module and the housing disposed opposite each other.

[0005] In some embodiments, both first mounting surfaces are provided with the limiting protrusions, and the limiting protrusions on the two first mounting surfaces are mirror-symmetrical with respect to the body.

[0006] In some embodiments, the width of the limiting protrusion gradually increases from the top to the root.

[0007] In some embodiments, the top of at least one of the limiting protrusions is shaped as a point, a straight line segment, a broken line segment, a circle, a polygon, an arc, or a spiral; and / or the outline shape of at least one of the roots is circular, elliptical, polygonal, oval, ring-shaped, or strip-shaped.

[0008] In some embodiments, at least one of the first mounting surfaces has a plurality of the limiting protrusions, and the plurality of limiting protrusions are spaced apart from each other, with the tops of the plurality of limiting protrusions being equidistant from the first mounting surface.

[0009] In some embodiments, at least one of the first mounting surfaces has a plurality of the limiting protrusions, which are arranged radially, in a matrix, or in a nested arrangement.

[0010] In some embodiments, the mounting pad has a through hole in the center that extends along the thickness direction.

[0011] Secondly, embodiments of the present invention also provide a wireless power transmission device, including a housing, a coil module, a mounting pad, a first adhesive layer, and a second adhesive layer; the mounting pad has a body, the body having two first mounting surfaces disposed opposite to each other along the thickness direction, the housing having a second mounting surface, one of the two first mounting surfaces being connected to the coil module through the first adhesive layer, and the other being connected to the second mounting surface through the second adhesive layer; wherein at least one of the first mounting surfaces is provided with at least one protruding limiting protrusion, the limiting protrusion having a root connected to the body and a top away from the root; the top is configured to make line contact or point contact with one of the coil module and the housing disposed opposite to each other, and the end face of the first adhesive layer or the second adhesive layer opposite to the first mounting surface is lower than or flush with the top.

[0012] In some embodiments, both first mounting surfaces are provided with the limiting protrusions, and the limiting protrusions on the two first mounting surfaces are mirror-symmetrical with respect to the body.

[0013] In some embodiments, the width of the limiting protrusion gradually increases from the top to the root.

[0014] In some embodiments, the top of at least one of the limiting protrusions is shaped as a point, a straight line segment, a broken line segment, a circle, a polygon, an arc, or a spiral; and / or the outline shape of at least one of the roots is circular, elliptical, polygonal, oval, ring-shaped, or strip-shaped.

[0015] In some embodiments, at least one of the first mounting surfaces has a plurality of the limiting protrusions, and the plurality of limiting protrusions are spaced apart from each other, with the tops of the plurality of limiting protrusions being equidistant from the first mounting surface.

[0016] In some embodiments, at least one of the first mounting surfaces has a plurality of the limiting protrusions, which are arranged radially, in a matrix, or in a nested arrangement.

[0017] In some embodiments, the coil module includes a coil with a hollowed-out portion in the middle; the mounting pad has a through-hole extending along the thickness direction in the middle, the through-hole matching the hollowed-out portion.

[0018] Thirdly, embodiments of the present invention also provide an assembly method for assembling the wireless power transmission device described in the second aspect. The assembly method includes: applying an adhesive along a first path on a second mounting surface of the housing and placing the mounting gasket, and holding pressure to form a second adhesive layer between the second mounting surface and the mounting gasket; and applying an adhesive along a second path on a first mounting surface opposite to the second mounting surface of the mounting gasket and placing the coil module, and holding pressure to form a first adhesive layer between the coil module and the mounting gasket; wherein at least one of the first path and the second path intersects with the limiting protrusion.

[0019] In some embodiments, the first path and the second path respectively form at least one closed shape, the closed shape surrounding the axis of the body.

[0020] In some embodiments, the first path and the second path are the same.

[0021] This invention discloses a mounting gasket, a wireless power transmission device, and an assembly method. By forming a limiting protrusion on the mounting gasket between the coil module and the housing, the top of the limiting protrusion makes line or point contact with the coil module and / or the housing. This allows the limiting protrusion to limit the coil module during the pressure holding process. Furthermore, even if adhesive is applied to the limiting protrusion, little or no adhesive residue remains on the top of the limiting protrusion during the pressure holding process. This allows for better control of the height of the adhesive layer, ensuring the accuracy of the coil module's mounting position and the quality of the wireless power transmission device. Attached Figure Description

[0022] The above and other objects, features and advantages of the present invention will become clearer from the following description of embodiments of the invention with reference to the accompanying drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of a wireless power transmission device according to an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of a proportional mounting pad.

[0025] Figure 3 This is a schematic diagram of the boss structure of a proportional mounting pad;

[0026] Figure 4This is a proportional diagram showing the connection between a mounting pad and a coil module;

[0027] Figure 5 This is a three-dimensional structural schematic diagram of a mounting gasket according to an embodiment of the present invention;

[0028] Figure 6 This is a schematic diagram of the longitudinal cross-sectional structure of a mounting gasket according to an embodiment of the present invention;

[0029] Figure 7 This is a partially enlarged schematic diagram of point B of the mounting pad according to an embodiment of the present invention;

[0030] Figure 8 This is a side view of a mounting pad according to an embodiment of the present invention;

[0031] Figure 9 This is a three-dimensional structural diagram of a mounting pad according to another embodiment of the present invention;

[0032] Figure 10 This is a top view of a mounting pad according to another embodiment of the present invention;

[0033] Figure 11 This is a schematic diagram of the limiting protrusion structure of the mounting gasket according to another embodiment of the present invention;

[0034] Figure 12 This is a top view of a mounting pad according to another embodiment of the present invention;

[0035] Figure 13 This is a three-dimensional structural schematic diagram of the mounting gasket according to another embodiment of the present invention;

[0036] Figure 14 This is a top view of a mounting pad according to another embodiment of the present invention;

[0037] Figure 15 This is a cross-sectional view along the CC plane of a mounting pad according to another embodiment of the present invention;

[0038] Figure 16 This is an enlarged schematic diagram at point D of a cross-sectional view of the mounting gasket according to another embodiment of the present invention;

[0039] Figure 17 This is a schematic flowchart of an assembly method according to an embodiment of the present invention;

[0040] Figure 18 This is a schematic diagram of an embodiment of the present invention in which adhesive is applied to the mounting pad along a second path. Detailed Implementation

[0041] The present invention is described below based on embodiments, but the invention is not limited to these embodiments. In the detailed description of the invention below, certain specific details are described in detail. Those skilled in the art will fully understand the invention even without these details. To avoid obscuring the essence of the invention, well-known methods, processes, flows, elements, and circuits are not described in detail.

[0042] Furthermore, persons of ordinary skill in the art will appreciate that the figures provided herein are for illustration purposes only and are not necessarily drawn to scale.

[0043] Unless the context explicitly requires it, words such as "including" or "contains" in the instruction manual should be interpreted as including rather than exclusive or exhaustive; that is, meaning "including but not limited to".

[0044] In the description of this invention, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0045] When an element or layer is mentioned as being “on,” “joined to,” “connected to,” or “linked to” another element or layer, it may be directly on, joined to, or linked to the other element or layer, or there may be an intermediate element or layer. As used herein, the term “and / or” includes any or all of one or more of the associated listed items.

[0046] Figure 1 This is a schematic diagram of the structure of a wireless power transmission device according to an embodiment of the present invention.

[0047] Reference Figure 1 This invention relates to a wireless power transmission device. The wireless power transmission device can be a wireless power transmitter and / or a wireless power receiver, capable of wirelessly transmitting or receiving electrical energy. The wireless power transmission device includes a housing 300 and a coil module 200 disposed within the housing 300. In some applications, a mounting gasket 100 can be provided between the coil module 200 and the housing 300 as needed to position the coil module 200, or to provide insulation when the housing 300 is made of a conductive material (e.g., conductive metal). In one implementation, a first adhesive layer 400 and a second adhesive layer 500 can be formed between the mounting gasket 100 and the coil module 200, and between the mounting gasket 100 and the housing 300, respectively, by applying adhesive and applying pressure to achieve connection and fixation.

[0048] Figure 2This is a schematic diagram of a proportional mounting gasket. Figure 3 This is a schematic diagram of the boss structure of a proportional mounting gasket. Figure 4 This is a schematic diagram illustrating the connection between a mounting pad and a coil module. (The diagram shows the connection between the pad and the coil module.) Figure 3 for Figure 2 A magnified view of point A in the diagram. (Refer to...) Figures 2-4 In a comparative example, the mounting pad 001 includes a body and a rectangular boss 002 protruding from the body. (See reference...) Figure 3 The end of the boss 002 that contacts the coil module 003 is a flat surface. When the coil module 003 is placed on the mounting pad 001, the contact between the coil module 003 and the boss 002 is a surface contact. (Refer to...) Figure 4 When connecting the coil module 003 to the mounting pad 001, adhesive needs to be applied to the surface of the mounting pad 001 opposite to the coil module 003. Then, the coil module 003 is placed on the mounting pad 001, a predetermined pressure is applied, and the pressure is maintained for a period of time to allow the adhesive to cure and form an adhesive layer, thus bonding the coil module 003 to the mounting pad 001. The boss 002 can position the coil module 003 and, to a certain extent, ensure a relatively uniform height of the cured adhesive layer. However, if the adhesive is applied to the top of the boss 002 during the adhesive application process, when the coil module 003 is placed on the boss 002 and pressure is applied, some adhesive will cure on the top of the boss 002, resulting in an uneven contact surface between the coil module 003 and the mounting pad 001, and compromising the height and positional accuracy of the coil module 003. While the method of ensuring that the adhesive application path avoids the boss 002 can guarantee that the coil module 003 can fit with the boss 002, the application position of the adhesive is difficult to control, which reduces the efficiency of assembly work and increases production costs.

[0049] Figures 5-16 These are schematic diagrams of several different embodiments of the present invention. Figure 5-Figure 8 The mounting gaskets 100 in the middle have the same shape. Figures 9-11 The mounting gaskets 100 in the middle have the same shape. Figures 13-16 The mounting gaskets 100 in the middle have the same shape. Figure 6 The cutting plane is parallel to the thickness direction of the mounting gasket 100. Figure 7 yes Figure 6 A magnified view of section B in the diagram;

[0050] Figure 15 yes Figure 14 A cross-sectional view of the mounting gasket 100 along the CC plane. Figure 16 yes Figure 15 A magnified view of part D in the diagram.

[0051] Reference Figure 1 , Figures 5-16 The mounting pad 100 of this embodiment includes a body 110, which has two first mounting surfaces 111 disposed opposite to each other along the thickness direction. One of the two first mounting surfaces 111 is connected to the coil module 200 through a first adhesive layer 400, and the other is connected to the housing 300 through a second adhesive layer 500. Thus, the coil module 200 can be mounted to the housing 300 through the mounting pad 100, the first adhesive layer 400, and the second adhesive layer 500.

[0052] The shape of the mounting spacer 100 can be selected according to the shapes of the coil module 200 and the housing 300 to securely mount the coil module 200 within the housing 300. For example, when the coil module 200 is disc-shaped, the mounting spacer 100 can be disc-shaped with an outer diameter slightly larger than the outer diameter of the coil module 200; when the coil module 200 is rectangular disc-shaped, the mounting spacer 100 can be rectangular disc-shaped with a size slightly larger than the coil module 200. When the coil module 200 has a certain curvature in height, the mounting spacer 100 can also have a corresponding curvature; for example, when the coil module 200 is bowl-shaped, the mounting spacer 100 can also be a corresponding bowl shape.

[0053] In some embodiments, the coil module 200 has a hollowed-out portion in the middle of the coil, so the hollowed-out portion does not need to be supported by a support structure. The middle of the mounting pad 100 can have a through hole 130 that runs through the thickness direction. The through hole 130 is adapted to the size and position of the hollowed-out portion of the coil, which can save material and reduce weight of the mounting pad 100.

[0054] In this embodiment of the invention, at least one of the two first mounting surfaces 111 of the mounting pad 100 is provided with a protruding limiting protrusion 120. The limiting protrusion 120 is shaped to allow it to make line contact or point contact with the coil module 200 or the housing 300. Specifically, when the first mounting surface 111 opposite to the coil module 200 is provided with the limiting protrusion 120, the limiting protrusion 120 makes point contact or line contact with the coil module 200; when the first mounting surface 111 opposite to the housing 300 is provided with the limiting protrusion 120, the limiting protrusion 120 makes point contact or line contact with the housing 300. With this configuration, since the contact area between the limiting protrusion 120 and the coil module 200 or the housing 300 is small, even if adhesive is applied to the limiting protrusion 120, it is difficult for adhesive to remain on the top of the limiting protrusion 120 during the pressure holding process. This avoids uneven installation height of the coil module 200 or the housing 300 due to adhesive residue on the top of the limiting protrusion 120, and also achieves the effect of limiting the coil module 200 or the housing 300 in the height direction with the limiting protrusion 120.

[0055] In some embodiments, the limiting protrusion 120 may be provided on only one of the two first mounting surfaces 111. For example, the limiting protrusion 120 may be provided on one of the first mounting surfaces 111 opposite to the coil module 200, or on one of the first mounting surfaces 111 opposite to the housing 300. In other embodiments, preferably, referring to... Figure 5-Figure 8 , Figure 11 as well as Figures 15-16 The aforementioned limiting protrusions 120 are provided on both first mounting surfaces 111 to ensure the mounting height position between the mounting pad 100 and the housing 300, and between the coil module 200 and the mounting pad 100, thereby more accurately ensuring the accuracy of dimensional transfer and the relative position of the coil module 200 and the housing 300 in the height direction. Furthermore, the limiting protrusions 120 on the two first mounting surfaces 111 are mirror-symmetrical with respect to the body 110, thereby allowing either first mounting surface 111 to be connected to the housing 300 while the other first mounting surface 111 is connected to the coil module 200, without needing to distinguish between the two first mounting surfaces 111, which improves the flexibility during assembly.

[0056] The limiting protrusion 120 has a root connected to the body 110 and a top away from the root. The top is used for line contact or point contact with one of the coil module 200 and the housing 300 that are disposed opposite to each other. The specific shapes of the root and the top, as well as the shape change of the limiting protrusion 120 from the root to the top, can be set according to the needs of actual application. Preferably, the root is larger and the width of the limiting protrusion 120 gradually increases from the top to the root, which can better ensure the structural strength of the limiting protrusion 120 and avoid the limiting protrusion 120 from the root or in the area between the top and the root. Wherein, when the shape of the top of the limiting protrusion 120 is a line, the width of the limiting protrusion 120 refers to the dimension perpendicular to the height direction of the limiting protrusion 120 and perpendicular to the line; when the shape of the top of the limiting protrusion 120 is a point, the width of the limiting protrusion 120 refers to a narrower dimension perpendicular to the height direction of the limiting protrusion 120.

[0057] The shape of the base of the limiting protrusion 120 can be circular (see reference). Figures 13-16 ), oval, egg-shaped, polygonal (refer to) Figure 5-Figure 8 ), ring (reference) Figures 9-11 (e.g., strip shape, or other shapes suitable for processing and use). The top of the limiting protrusion 120 can be a point (see reference). Figures 13-16 ), straight line segment (refer to) Figure 5-Figure 8 ), broken line segment, circle (refer to) Figures 9-11 ), polygons, arcs, spirals (see reference) Figure 9Or other shapes suitable for processing and use. The shapes of the root and the top of the limiting protrusion 120 may be similar or dissimilar. For example, when the top of the limiting protrusion 120 is a straight line segment, the shape of the root of the limiting protrusion 120 may be rectangular, circular, oval or other shapes.

[0058] The number of limiting protrusions 120 can be one or more. When there is only one limiting protrusion 120 on the first mounting surface 111, the top of the limiting protrusion 120 is linear, that is, the limiting protrusion 120 has line contact with the coil module 200 or the housing 300, and the line wraps around the axis of the mounting pad 100 and covers a large angle to ensure the stability of support and limiting. In one embodiment, referring to... Figure 12 The first mounting surface 111 has a limiting protrusion 120, which is spiral in shape, thereby achieving stable support. In another embodiment, the first mounting surface 111 has an annular or polygonal limiting protrusion 120. The specific shape of the limiting protrusion 120 can be determined according to the outline shape of the coil module 200. The axis of the limiting protrusion 120 is basically coincident with the axis of the mounting pad 100, and the outer contour of the limiting protrusion 120 is slightly smaller than the outer contour of the coil module 200. The annular or polygonal limiting protrusion 120 is easier to process due to its regular shape.

[0059] Reference Figure 8 , Figure 11 as well as Figures 15-16 When there are multiple limiting protrusions 120 on a first mounting surface 111, the multiple limiting protrusions 120 are spaced apart from each other, and the distance between the top of the multiple limiting protrusions 120 and the first mounting surface 111 is equal. This can achieve stable support for different areas of the coil module 200 or the mounting pad 100 itself, ensuring that the height position of the coil module 200 is basically consistent throughout. The shapes of the multiple limiting protrusions 120 can be the same or different. Preferably, the multiple limiting protrusions 120 have the same shape, which facilitates the processing of the mounting pad 100. The arrangement of the multiple limiting protrusions 120 can be set according to the usage requirements and the shape of the limiting protrusions 120. For example, they can be arranged radially (see reference). Figure 5-Figure 8 ), matrix arrangement, nested arrangement (see Figures 9-11 Alternatively, other feasible arrangements can be adopted.

[0060] The following combination Figures 5-16 Several more specific embodiments of the present invention will be described below.

[0061] Reference Figure 5-Figure 8In one embodiment, the body 110 of the mounting pad 100 is a flat hollow cylinder. Limiting protrusions 120 are provided on both first mounting surfaces 111 of the body 110, and the shape of the mounting pad 100 is mirror-symmetrical with respect to the body 110. Multiple limiting protrusions 120 are provided on the first mounting surfaces 111. These multiple limiting protrusions 120 have the same shape, being straight strips with arc-shaped top surfaces. Each limiting protrusion 120 is arranged radially along the body 110, and the multiple limiting protrusions 120 are arranged radially. Since the coil is wound in a spiral shape, the radially arranged limiting protrusions 120 are beneficial for supporting various parts of the coil and are also suitable for three-dimensional coil modules 200, such as bowl-shaped coil modules 200. A predetermined angle is formed between two adjacent limiting protrusions 120. When adhesive is applied between the mounting gasket 100 and the housing 300 or the coil module 200, even if the adhesive is applied to the limiting protrusion 120, during the pressure holding process, the top of the limiting protrusion 120 contacts the housing 300 or the coil module 200, achieving positioning in the height direction. Simultaneously, since the limiting protrusion 120 and the housing 300 or the coil module 200 have line contact, there is less adhesive on the top of the limiting protrusion 120, and it is easily pushed towards the root of the limiting protrusion 120 during the compression process. Therefore, it effectively prevents uneven installation height of the coil module 200 caused by adhesive residue on the top of the limiting protrusion 120. It is understood that the limiting protrusion 120 may not extend to the edge of the body 110; or there may be one or more disconnected portions on the line connecting the inner and outer edges of the body 110. That is, multiple limiting protrusions 120 can be provided at intervals along the radial direction of the body 110.

[0062] Reference Figures 9-11 In another embodiment, the first mounting surface 111 is provided with a plurality of limiting protrusions 120, each of which is an annular shape with a rounded top surface. The plurality of annular limiting protrusions 120 are coaxially nested, and the contact portion between the housing 300 or the coil module 200 and the mounting pad 100 is a plurality of concentric circles, which can provide better support for the coil module 200.

[0063] Reference Figure 12 In another embodiment, a spiral limiting protrusion 120 with a rounded top surface is provided on the first mounting surface 111. The contact portion between the mounting pad 100 and the housing 300 or the coil module 200 is spiral-shaped, which can provide better support for the coil module 200.

[0064] Reference 13- Figure 16In another embodiment, the first mounting surface 111 is provided with a plurality of dispersed hemispherical limiting protrusions 120. Each limiting protrusion 120 has point contact with the housing 300 or the coil module 200, and the contact portion between the mounting pad 100 and the housing 300 or the coil module 200 consists of multiple dispersed points, which can provide good support for the coil module 200.

[0065] Reference Figure 1 As described above, some embodiments of the present invention also relate to a wireless power transmission device. This wireless power transmission device includes a housing 300, a coil module 200, and a mounting gasket 100 as described in at least some of the embodiments above. The housing 300 has a second mounting surface, and the mounting gasket 100 is disposed between the second mounting surface and the coil module 200. The mounting gasket 100 and the coil module 200 are connected by a first adhesive layer 400, and the mounting gasket 100 and the second mounting surface are connected by a second adhesive layer 500, thereby fixing the coil module 200 within the housing 300. By applying the mounting gasket 100 in the embodiments of the present invention, the accuracy of the mounting position of the coil module 200 in the direction perpendicular to the second mounting surface (i.e., the height direction) can be better ensured. Simultaneously, the positional control requirements during adhesive application are reduced, which helps to reduce production costs and improve yield.

[0066] This invention also relates to an assembly method for assembling the aforementioned wireless power transmission device. (See attached...) Figure 17 In this embodiment, the assembly method includes the following steps S100 and S200:

[0067] Step S100: Apply adhesive along the first path on the second mounting surface of the housing and place the mounting gasket, and maintain pressure to form the second adhesive layer between the second mounting surface and the mounting gasket.

[0068] Step S200: Apply adhesive along the second path on a first mounting surface opposite to the second mounting surface of the mounting pad and place the coil module thereon, and hold pressure to form the first adhesive layer between the coil module and the mounting pad.

[0069] In steps S100 and S200, the adhesive can be applied manually or mechanically, or by using a dispensing machine or similar equipment. At least one of the first path and the second path intersects with the limiting protrusion 120. Specifically, depending on the position of the limiting protrusion 120 on the mounting pad 100, when one of the two first mounting surfaces 111 of the mounting pad 100 is provided with the limiting protrusion 120, at least one of its corresponding paths intersects with the limiting protrusion 120; while when both first mounting surfaces 111 of the mounting pad 100 are provided with the limiting protrusion 120, both the first path and the second path can intersect with the limiting protrusion 120. When the first path 600 or the second path for applying the adhesive intersects with the limiting protrusion 120, the application process becomes more continuous, eliminating the need to avoid the limiting protrusion 120. This also ensures that the portion near the limiting protrusion 120 also receives a certain amount of adhesive, resulting in a larger contact area between the formed adhesive layer and the mounting gasket 100 and the housing 300 or coil module 200, thus guaranteeing bonding strength. Optionally, the first path 600 and the second path can be identical for easier control.

[0070] In some embodiments, the first path 600 and the second path respectively form at least one closed shape, and the closed shape surrounds the axis of the body 110, thereby allowing the formed first adhesive layer 400 and second adhesive layer 500 to have a full-circumference or closed shape, ensuring that the coil module 200 can be well fixed in all circumferential positions. For example, refer to Figure 18 When multiple limiting protrusions 120 are radially distributed, the first path 600 can be multiple rings around the axis of the body.

[0071] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. For those skilled in the art, the present invention can be modified and varied in various ways. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of the present invention should be included within the scope of protection of the present invention.

Claims

1. A mounting pad for mounting a coil module (200) to a housing (300), characterized in that, The mounting pad (100) has a body (110), the body (110) has two first mounting surfaces (111) arranged opposite to each other along the thickness direction, one of the two first mounting surfaces (111) is connected to the coil module (200) through a first adhesive layer (400), and the other is connected to the housing (300) through a second adhesive layer (500); At least one of the first mounting surfaces (111) is provided with at least one protruding limiting protrusion (120), the limiting protrusion (120) having a root connected to the body (110) and a top away from the root, the top being configured to make line contact or point contact with one of the coil module (200) and the housing (300) disposed opposite to each other.

2. The mounting gasket according to claim 1, characterized in that, Both of the first mounting surfaces (111) are provided with the limiting protrusions (120), and the limiting protrusions (120) on the two first mounting surfaces (111) are mirror-symmetrical with respect to the body (110).

3. The mounting gasket according to claim 1, characterized in that, Both of the first mounting surfaces (111) are provided with the limiting protrusion (120), the width of which gradually increases from the top to the root.

4. The mounting gasket according to any one of claims 1-3, characterized in that, At least one of the limiting protrusions (120) has a top shape that is a point, a straight line segment, a broken line segment, a circle, a polygon, an arc, or a spiral; and / or At least one of the root portions has a circular, elliptical, polygonal, oval, annular, or strip-shaped outline.

5. The mounting gasket according to any one of claims 1-3, characterized in that, At least one of the first mounting surfaces (111) has a plurality of the limiting protrusions (120), and the plurality of limiting protrusions (120) are spaced apart from each other, and the tops of the plurality of limiting protrusions (120) are equidistant from the first mounting surface (111).

6. The mounting gasket according to any one of claims 1-3, characterized in that, At least one of the first mounting surfaces (111) has a plurality of the limiting protrusions (120), which are arranged radially, in a matrix or in a nested manner.

7. The mounting gasket according to claim 1, characterized in that, The mounting gasket (100) has a through hole (130) in the center that runs through the thickness direction.

8. A wireless power transmission device, characterized in that, The device includes a housing (300), a coil module (200), a mounting pad (100), a first adhesive layer (400), and a second adhesive layer (500). The mounting pad (100) has a body (110) with two first mounting surfaces (111) arranged opposite to each other along the thickness direction. The housing (300) has a second mounting surface. One of the two first mounting surfaces (111) is connected to the coil module (200) through the first adhesive layer (400), and the other is connected to the second mounting surface through the second adhesive layer (500). Wherein, at least one of the first mounting surfaces (111) is provided with at least one protruding limiting protrusion (120), the limiting protrusion (120) having a root connected to the body (110) and a top away from the root; The top is configured to make line or point contact with one of the coil module (200) and the housing (300) respectively, and the end face of the first adhesive layer (400) or the second adhesive layer (500) opposite to the first mounting surface (111) is lower than or flush with the top.

9. The wireless power transmission device according to claim 8, characterized in that, Both of the first mounting surfaces (111) are provided with the limiting protrusions (120), and the limiting protrusions (120) on the two first mounting surfaces (111) are mirror-symmetrical with respect to the body (110).

10. The wireless power transmission device according to claim 8, characterized in that, Both of the first mounting surfaces (111) are provided with the limiting protrusion (120), the width of which gradually increases from the top to the root.

11. The wireless power transmission device according to any one of claims 8-10, characterized in that, At least one of the limiting protrusions (120) has a top shape that is a point, a straight line segment, a broken line segment, a circle, a polygon, an arc, or a spiral; and / or At least one of the root portions has a circular, elliptical, polygonal, oval, annular, or strip-shaped outline.

12. The wireless power transmission device according to any one of claims 8-10, characterized in that, At least one of the first mounting surfaces (111) has a plurality of the limiting protrusions (120), and the plurality of limiting protrusions (120) are spaced apart from each other, and the tops of the plurality of limiting protrusions (120) are equidistant from the first mounting surface (111).

13. The wireless power transmission device according to any one of claims 8-10, characterized in that, At least one of the first mounting surfaces (111) has a plurality of the limiting protrusions (120), which are arranged radially, in a matrix or in a nested manner.

14. The wireless power transmission device according to claim 8, characterized in that, The coil module (200) includes a coil, the coil having a hollowed-out center; The mounting pad (100) has a through hole (130) in the middle that runs through the thickness direction, and the through hole (130) matches the cutout.

15. An assembly method for assembling a wireless power transmission device as described in any one of claims 8-14, characterized in that, The assembly method includes: An adhesive is applied along the first path (600) on the second mounting surface of the housing (300), and the mounting gasket (100) is placed thereon. Pressure is maintained to form the second adhesive layer (500) between the second mounting surface and the mounting gasket (100); and Adhesive is applied along a second path on a first mounting surface (111) opposite to the second mounting surface of the mounting pad (100), and the coil module (200) is placed thereon. Pressure is maintained to form the first adhesive layer (400) between the coil module (200) and the mounting pad (100). At least one of the first path (600) and the second path intersects with the limiting protrusion (120).

16. The assembly method according to claim 15, characterized in that, The first path (600) and the second path respectively form at least one closed shape, which surrounds the axis of the body (110).

17. The assembly method according to claim 15, characterized in that, The first path (600) is the same as the second path.

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