A pluggable heat-conducting sheet

Abstract

This utility model belongs to the field of heat transfer technology and discloses a pluggable heat-conducting sheet that is inserted between a heat transfer element and an insert. The heat-conducting sheet includes a metal outer support structure, a heat-conducting medium, and an encapsulation structure. The metal outer support structure includes a first metal layer and a heat-conducting support member. The heat-conducting support member interacts with the first metal layer, limiting the deformation of the first metal layer, thereby reducing the squeezing amount when the heat-conducting sheet is inserted between the heat transfer element and the insert. The smaller the squeezing amount of the heat-conducting sheet, the smaller the deformation of the first metal layer, making reset easier and faster after insertion. The heat-conducting sheet exhibits stable and consistent thermal conductivity after installation. Furthermore, the top surface of the heat-conducting support member is close to the heat transfer element, which is more conducive to heat transfer. The heat-conducting support member is surrounded by the heat-conducting medium, increasing the contact area with the medium and resulting in more thorough contact, higher heat exchange efficiency, and thus improving the overall thermal conductivity of the heat-conducting sheet.

Description

Technical Field

[0001] This utility model relates to the field of heat transfer technology, and in particular to a pluggable heat-conducting sheet. Background Technology

[0002] Thermal conductive sheets are engineering materials with thermal conductivity and insulation as their core functions. They are mainly used for heat conduction between heat-generating components and heat sinks or metal bases in electronic devices, and their applications cover LED lighting, automotive electronics, power supply equipment, and communication instruments.

[0003] In the application of optical module connectors in servers, the heat-conducting pads used for insertion are typically a metal sheet or a PI film (polyimide film) with double-sided adhesive around the edges and a heat-conducting medium in the center. When the heat-conducting pad is inserted, the heat-conducting medium is subjected to excessive extrusion pressure, which can easily cause the heat-conducting medium to break through the adhesive edges, leading to leakage. Furthermore, the heat-conducting medium deforms significantly during insertion, requiring a large forward pressure to restore its filling. However, a large forward pressure can result in excessive extrusion, making it difficult to find the balance point. Consequently, the thermal conductivity of individual components is inconsistent after installation.

[0004] Therefore, there is an urgent need to develop a pluggable heat-conducting plate to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a pluggable heat-conducting sheet that ensures controllable deformation, reduces the heat transfer distance of the heat-conducting medium, increases the heat exchange area with the heat-conducting medium, and improves heat exchange efficiency, thereby making the heat conduction performance between pluggable parts better and more stable.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] A pluggable heat-conducting plate is inserted between a heat transfer element and an insert, the heat-conducting plate comprising:

[0008] A metal outer support structure includes a first metal layer and a thermally conductive support component. The thermally conductive support component is fixedly connected to the first metal layer. The surface of the first metal layer is provided with a thermally conductive area and an encapsulation area. The thermally conductive area is located in the central region of the first metal layer, and the encapsulation area surrounds the thermally conductive area. The outer peripheral wall of the thermally conductive area abuts against the inner peripheral wall of the encapsulation area, and the thermally conductive support component is located within the thermally conductive area.

[0009] Thermally conductive medium, which is wrapped around the outer surface of the thermally conductive support;

[0010] The encapsulation structure is fixedly connected to the surface of the encapsulation area and is wrapped around the outer surface of the thermally conductive medium.

[0011] Preferably, the thermally conductive support is a thermally conductive support column, with one end of the column fixedly connected to the surface of the thermally conductive area.

[0012] Preferably, there are multiple thermally conductive support pillars, which are spaced apart on the surface of the thermally conductive zone.

[0013] Preferably, the thermally conductive support is a thermally conductive support mesh, which is arranged parallel to the first metal layer, and the thermally conductive support mesh is fixedly connected to the surface of the thermally conductive area through a thermally conductive medium.

[0014] Alternatively, the thermally conductive support can be a thermally conductive support sheet, which is arranged parallel to the first metal layer and is fixedly connected to the surface of the thermally conductive area through a thermally conductive medium.

[0015] Preferably, the side of the first metal layer away from the heat-conducting support is set as a smooth surface along the thickness direction of the first metal layer.

[0016] Preferably, the heat-conducting sheet also includes a protective structure, which includes a first protective layer and is detachably connected to the smooth surface;

[0017] And / or, the protective structure includes a second protective layer along the thickness direction of the first metal layer, the second protective layer being detachably connected to the side of the encapsulation structure opposite to the smooth surface.

[0018] Preferably, the protective structure is made of plastic.

[0019] Preferably, the encapsulation structure includes a first adhesive layer, one side of which is fixed to the surface of the encapsulation area;

[0020] Alternatively, the encapsulation structure includes a second adhesive layer, a third adhesive layer, and a rubber layer, with one side of the second adhesive layer fixed to the surface of the encapsulation area, and the rubber layer sandwiched between the other side of the second adhesive layer and the third adhesive layer.

[0021] Preferably, the surface of the first metal layer is further provided with a reserved area, which is located at one end of the first metal layer and the edge of the reserved area abuts against the edge of the encapsulation area.

[0022] Preferably, the metal outer support structure further includes a second metal layer, which is fixedly connected to the side of the heat-conducting support member away from the first metal layer along the thickness direction of the first metal layer.

[0023] The beneficial effects of this utility model are:

[0024] This invention provides a pluggable heat-conducting sheet that is inserted between a heat transfer element and an insert. The heat-conducting sheet includes a metal outer support structure, a thermally conductive medium, and an encapsulation structure. The metal outer support structure includes a first metal layer and a thermally conductive support member. The thermally conductive support member interacts with the first metal layer, limiting the deformation of the first metal layer and thus reducing the amount of pressure applied when the heat-conducting sheet is inserted between the heat transfer element and the insert. The smaller the pressure applied by the heat-conducting sheet, the less deformation of the first metal layer is, making repositioning easier and faster after insertion. The installed heat-conducting sheet exhibits stable and consistent thermal conductivity. Furthermore, the top surface of the thermally conductive support member is close to the heat transfer element, which facilitates heat transfer. The thermally conductive medium surrounding the thermally conductive support member increases the contact area with the medium, resulting in more thorough contact, higher heat exchange efficiency, and ultimately improved thermal conductivity of the entire heat-conducting sheet. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the heat-conducting sheet insertion structure provided in Embodiment 1;

[0026] Figure 2 This is a schematic diagram of the metal outer support structure provided in Embodiment 1;

[0027] Figure 3 This is a schematic diagram of the first metal layer structure provided in Embodiment 1;

[0028] Figure 4 This is a schematic diagram of the heat-conducting sheet structure provided in Embodiment 1;

[0029] Figure 5 This is a schematic diagram of the heat-conducting sheet structure provided in Embodiment 1 (thickness greater than 0.2mm);

[0030] Figure 6 This is a schematic diagram of the heat-conducting sheet structure provided in Embodiment 2;

[0031] Figure 7 This is a schematic diagram of the heat-conducting sheet structure provided in Embodiment 2 (including the reserved area);

[0032] Figure 8 This is a schematic diagram of the first metal layer structure provided in Embodiment 2;

[0033] Figure 9 This is a schematic diagram of the thermally conductive support structure provided in Embodiment 3;

[0034] Figure 10 This is a schematic diagram of the heat-conducting sheet structure provided in Embodiment 3;

[0035] Figure 11 This is a schematic diagram of the heat-conducting sheet structure provided in Embodiment 3 (including the second metal layer).

[0036] In the picture:

[0037] 10. Thermal conductive sheet;

[0038] 20. Heat transfer elements;

[0039] 30. Inserts;

[0040] 40. Metal outer support structure; 41. First metal layer; 411. Thermally conductive area; 412. Encapsulation area; 413. Smooth surface; 414. Reserved area; 42. Thermally conductive support component; 421. Thermally conductive support column; 422. Thermally conductive support mesh; 43. Second metal layer;

[0041] 50. Thermal conductive medium;

[0042] 60. Encapsulation structure; 61. First adhesive layer; 62. Second adhesive layer; 63. Third adhesive layer; 64. Rubber layer; 65. Fourth adhesive layer;

[0043] 70. Protective structure; 71. First protective layer; 72. Second protective layer. Detailed Implementation

[0044] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0045] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0046] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0047] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used in part in the description and have no special meaning.

[0048] Example 1

[0049] This embodiment provides a pluggable heat-conducting sheet, which ensures controllable deformation, reduces the heat transfer distance of the heat-conducting medium, increases the heat exchange area with the heat-conducting medium, and improves heat exchange efficiency, thereby making the heat conduction performance between pluggable parts better and more stable.

[0050] Specifically, such as Figures 1 to 4 As shown, a pluggable heat-conducting sheet 10 is inserted between a heat transfer element 20 and an insert 30. The heat-conducting sheet 10 includes a metal outer support structure 40, a heat-conducting medium 50, and an encapsulation structure 60. The metal outer support structure 40 includes a first metal layer 41 and a heat-conducting support member 42. The heat-conducting support member 42 is fixedly connected to the first metal layer 41. The surface of the first metal layer 41 is provided with a heat-conducting area 411 and an encapsulation area 412. The heat-conducting area 411 is located in the central region of the first metal layer 41, and the encapsulation area 412 surrounds the heat-conducting area 411. The outer peripheral wall of the heat-conducting area 411 abuts against the inner peripheral wall of the encapsulation area 412. The heat-conducting support member 42 is located inside the heat-conducting area 411. The heat-conducting medium 50 is wrapped around the outer surface of the heat-conducting support member 42. The encapsulation structure 60 is fixedly connected to the surface of the encapsulation area 412 and is wrapped around the outer surface of the heat-conducting medium 50.

[0051] The thermally conductive support 42 interacts with the first metal layer 41, limiting the deformation of the first metal layer 41. This reduces the amount of pressure when the thermally conductive sheet 10 is inserted between the heat transfer element 20 and the insert 30. Less pressure results in less deformation, making repositioning easier and faster after insertion. This leads to stable and consistent thermal conductivity of the installed thermally conductive sheet 10. Furthermore, the top surface of the thermally conductive support 42 is close to the heat transfer element 20, facilitating heat transfer. The thermally conductive support 42 is surrounded by the thermally conductive medium 50, increasing the contact area and improving heat exchange efficiency. This enhances the overall thermal conductivity of the thermally conductive sheet 10. Additionally, the thermally conductive support 42 reduces the amount of thermally conductive medium 50 used, minimizing resource consumption and pollutant emissions during production, use, and disposal, thus reducing the burden and damage to the ecological environment and making it more environmentally friendly. In this embodiment, the first metal layer 41 is a composite material of stainless steel and copper. In other embodiments, the first metal layer 41 is made of copper and copper alloys, aluminum and aluminum alloys, or alloy steel, etc.

[0052] Furthermore, the thermally conductive support 42 is a thermally conductive support column 421. One end of the thermally conductive support column 421 is fixedly connected to the surface of the thermally conductive area 411, which improves the stability of the connection between the thermally conductive support column 421 and the first metal layer 41. Moreover, the top of the columnar structure further shortens the distance between the thermally conductive support column 421 and the heat transfer element 20, thereby improving the heat transfer efficiency of the thermally conductive support column 421.

[0053] Furthermore, there are multiple thermally conductive support pillars 421, which are spaced apart on the surface of the thermally conductive area 411. The interaction of the multiple thermally conductive support pillars 421 further reduces the deformation of the heat-conducting plate 10 during insertion and further increases the contact area between the thermally conductive support pillars 421 and the thermally conductive medium 50, thereby improving the thermal conductivity of the heat-conducting plate 10. It should be noted that the number of thermally conductive support pillars 421 can be adjusted at any time according to the actual area of ​​the thermally conductive area 411, and is not limited here. In this embodiment, the thermally conductive support pillars 421 are evenly arranged in an array on the surface of the thermally conductive area 411. In other embodiments, the thermally conductive support pillars 421 may be randomly spaced.

[0054] Furthermore, the thermally conductive support pillar 421 is integrally formed with the first metal layer 41 by etching, thereby improving the stability of the connection between the thermally conductive support pillar 421 and the first metal layer 41. In other embodiments, the fixed connection between the thermally conductive support pillar 421 and the first metal layer 41 can also be achieved by 3D printing, cold forging, or bonding.

[0055] Optionally, along the thickness direction of the first metal layer 41, the side of the first metal layer 41 facing away from the heat-conducting support 42 is provided as a smooth surface 413, improving the convenience of insertion and removal between the heat-conducting plate 10 and the insert 30. It should be noted that obtaining the smooth surface 413 by polishing the first metal layer 41 is a common technique used by those skilled in the art, and will not be described in detail here.

[0056] Optionally, the encapsulation structure 60 includes a first adhesive layer 61. One side of the first adhesive layer 61 is fixed to the surface of the encapsulation area 412. On one hand, it works in conjunction with the thermally conductive support 42 to support the thermally conductive medium 50. On the other hand, after the thermally conductive sheet 10 is inserted between the heat transfer element 20 and the insert 30, it serves to fix the first metal layer 41. In this embodiment, the first adhesive layer 61 is double-sided adhesive. In other embodiments, the first adhesive layer 61 can also be a solid adhesive or glue, etc.

[0057] It is important to note that, such as Figure 5As shown, when the overall thickness of the heat-conducting sheet 10 is greater than 0.2 mm, the encapsulation structure 60 includes a second adhesive layer 62, a third adhesive layer 63, and a rubber layer 64. One side of the second adhesive layer 62 is fixed to the surface of the encapsulation area 412, and the rubber layer 64 is sandwiched between the other side of the second adhesive layer 62 and the third adhesive layer 63 to prevent the encapsulation structure 60 from being too thin and failing to provide adequate support. In this embodiment, the second adhesive layer 62 is double-sided adhesive; in other embodiments, the second adhesive layer 62 is glue or solid glue, etc. In this embodiment, the third adhesive layer 63 is double-sided adhesive; in other embodiments, the third adhesive layer 63 is glue or solid glue, etc. In this embodiment, the rubber layer 64 is foam; in other embodiments, the rubber layer 64 can be rubber or silicone, etc.

[0058] Optionally, the heat-conducting sheet 10 also includes a protective structure 70, which includes a first protective layer 71 and a second protective layer 72. The first protective layer 71 is detachably connected to the smooth surface 413, and the second protective layer 72 is detachably connected to the side of the encapsulation structure 60 opposite to the smooth surface 413 along the thickness direction of the first metal layer 41. The first protective layer 71 can prevent the smooth surface 413 from being scratched or oxidized during production or transportation, resulting in poor appearance or performance. The second protective layer 72 is used to protect the first adhesive layer 61 and prevent it from being damaged. The arrangement of the first protective layer 71 and the second protective layer 72 ensures the integrity of the heat-conducting sheet 10 before insertion and removal, avoiding difficulties in the insertion process. It should be noted that the first protective layer 71 and the second protective layer 72 need to be removed before the heat-conducting sheet 10 is inserted, which will not be described in detail here. In other embodiments, the protective structure 70 includes a first protective layer 71, which is detachably connected to the smooth surface 413; or, the protective structure 70 includes a second protective layer 72, which is detachably connected to the side of the encapsulation structure 60 away from the smooth surface 413 along the thickness direction of the first metal layer 41.

[0059] Furthermore, the protective structure 70 is made of plastic, which reduces the production cost of the heat-conducting sheet 10 while protecting the smooth surface 413 and the first adhesive layer 61. In this embodiment, the material of the first protective layer 71 is polypropylene; in other embodiments, the material of the first protective layer 71 is polyethylene or polyvinyl chloride, etc. In this embodiment, the material of the second protective layer 72 is polypropylene; in other embodiments, the material of the second protective layer 72 is polyethylene or polyvinyl chloride, etc.

[0060] Example 2

[0061] This embodiment provides a pluggable heat-conducting sheet 10. The following mainly describes the differences between this embodiment and Embodiment 1, while the similarities will not be repeated.

[0062] like Figures 6 to 7As shown, the metal outer support structure 40 includes a second metal layer 43. Along the thickness direction of the first metal layer 41, the second metal layer 43 is fixedly connected to the side of the heat-conducting support member 42 opposite to the first metal layer 41. Through the combined action of the first metal layer 41 and the second metal layer 43, the deformation of the first metal layer 41 is further reduced, thereby further reducing the deformation of the heat-conducting sheet 10 when inserted between the heat transfer element 20 and the insert 30. In this embodiment, the second metal layer 43 is a metal foil; in other embodiments, the second metal layer 43 can be a polymer plastic outer film, etc.

[0063] Furthermore, the encapsulation structure 60 includes a fourth adhesive layer 65, through which the second metal layer 43 is fixedly connected to the thermally conductive medium 50, achieving a stable connection of the second metal layer 43. In this embodiment, the fourth metal layer is double-sided adhesive; in other embodiments, the fourth adhesive layer 65 can be a solid adhesive or glue, etc.

[0064] Furthermore, such as Figure 8 As shown, the surface of the first metal layer 41 is also provided with a reserved area 414. The reserved area 414 is located at one end of the first metal layer 41 and the edge of the reserved area 414 abuts against the edge of the encapsulation area 412. By applying epoxy glue to the reserved area 414 and fixing it to the heat transfer element 20, the overall fixing performance of the heat conduction sheet 10 is increased when it is inserted.

[0065] Example 3

[0066] This embodiment provides a pluggable heat-conducting sheet 10. The following mainly describes the differences between this embodiment and the previous embodiment, while the similarities will not be repeated.

[0067] like Figures 9 to 10 As shown, the thermally conductive support 42 is a thermally conductive support mesh 422, which is arranged parallel to the first metal layer 41. The surface of the thermally conductive support mesh 422 and the thermally conductive area 411 are fixedly connected by a thermally conductive medium 50. The thermally conductive medium 50 wraps around the thermally conductive support mesh 422 and fills the interior of the mesh structure, further increasing the contact area between the thermally conductive support mesh 422 and the thermally conductive medium 50, thereby improving the thermal conductivity of the thermally conductive support mesh 422. In other embodiments, the thermally conductive support 42 can also be a thermally conductive support sheet, which is arranged parallel to the first metal layer 41 and fixedly connected to the surface of the thermally conductive area 411 by a thermally conductive medium 50. It should be noted that the thermally conductive support mesh 422 provided in this embodiment is made of metal braiding. In other embodiments, the thermally conductive support mesh 422 can be formed by metal welding or etching.

[0068] In other embodiments, such as Figure 11As shown, the metal outer support structure 40 also includes a second metal layer 43. Along the thickness direction of the first metal layer 41, the second metal layer 43 is fixedly connected to the side of the thermally conductive support 42 opposite to the first metal layer 41. Through the combined action of the first metal layer 41 and the second metal layer 43, the deformation of the thermally conductive sheet 10 when inserted between the heat transfer element 20 and the insert 30 is further reduced. In this embodiment, the second metal layer 43 is a metal foil; in other embodiments, the second metal layer 43 can be a polymer plastic outer film, etc.

[0069] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A pluggable heat-conducting sheet, characterized in that, The heat-conducting plate (10) is inserted between the heat transfer element (20) and the insert (30), and the heat-conducting plate (10) comprises: A metal outer support structure (40) is provided, comprising a first metal layer (41) and a thermally conductive support member (42). The thermally conductive support member (42) is fixedly connected to the first metal layer (41). The surface of the first metal layer (41) is provided with a thermally conductive area (411) and an encapsulation area (412). The thermally conductive area (411) is located in the central region of the first metal layer (41). The encapsulation area (412) surrounds the thermally conductive area (411). The inner peripheral wall of the thermally conductive area (411) abuts against the outer peripheral wall of the encapsulation area (412). The thermally conductive support member (42) is located inside the thermally conductive area (411). A thermally conductive medium (50) is wrapped around the outer surface of the thermally conductive support (42); The encapsulation structure (60) is fixedly connected to the surface of the encapsulation area (412) and the encapsulation structure (60) is wrapped around the outer surface of the thermally conductive medium (50).

2. The pluggable heat-conducting sheet according to claim 1, characterized in that, The thermally conductive support (42) is a thermally conductive support column (421), and one end of the thermally conductive support column (421) is fixedly connected to the surface of the thermally conductive area (411).

3. The pluggable heat-conducting sheet according to claim 2, characterized in that, The number of the thermally conductive support pillars (421) is multiple, and the multiple thermally conductive support pillars (421) are spaced apart on the surface of the thermally conductive area (411).

4. The pluggable heat-conducting sheet according to claim 1, characterized in that, The thermally conductive support (42) is a thermally conductive support mesh (422), which is arranged parallel to the first metal layer (41), and the thermally conductive support mesh (422) is fixedly connected to the surface of the thermally conductive area (411) through the thermally conductive medium (50). Alternatively, the thermally conductive support (42) may be a thermally conductive support sheet, which is arranged parallel to the first metal layer (41), and the thermally conductive support sheet is fixedly connected to the surface of the thermally conductive area (411) through the thermally conductive medium (50).

5. The pluggable heat-conducting sheet according to claim 1, characterized in that, Along the thickness direction of the first metal layer (41), the side of the first metal layer (41) facing away from the thermally conductive support (42) is set as a smooth surface (413).

6. The pluggable heat-conducting sheet according to claim 5, characterized in that, The heat-conducting sheet (10) also includes a protective structure (70), which includes a first protective layer (71) and is detachably connected to the smooth surface (413). And / or, the protective structure (70) includes a second protective layer (72) along the thickness direction of the first metal layer (41), the second protective layer (72) being detachably connected to the side of the encapsulation structure (60) opposite to the smooth surface (413).

7. The pluggable heat-conducting sheet according to claim 6, characterized in that, The protective structure (70) is made of plastic.

8. The pluggable heat-conducting sheet according to any one of claims 1-7, characterized in that, The encapsulation structure (60) includes a first adhesive layer (61), one side of which is fixed to the surface of the encapsulation area (412). Alternatively, the encapsulation structure (60) includes a second adhesive layer (62), a third adhesive layer (63), and a rubber layer (64), with one side of the second adhesive layer (62) fixed to the surface of the encapsulation area (412), and the rubber layer (64) sandwiched between the other side of the second adhesive layer (62) and the third adhesive layer (63).

9. The pluggable heat-conducting sheet according to any one of claims 1-7, characterized in that, The surface of the first metal layer (41) is further provided with a reserved area (414), the reserved area (414) is located at one end of the first metal layer (41) and the edge of the reserved area (414) abuts against the edge of the encapsulation area (412).

10. The pluggable heat-conducting sheet according to any one of claims 1-7, characterized in that, The metal outer support structure (40) further includes a second metal layer (43), which is fixedly connected to the side of the thermally conductive support (42) away from the first metal layer (41) along the thickness direction of the first metal layer (41).

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