Heat dissipation system
By setting a rounded transition wrapping element at the corner of the graphene pad, the problem of uneven overlap thickness at the corner of the graphene thermal pad is solved, achieving more uniform heat transfer, which is suitable for high-performance electronic devices.
Patent Information
- Application Number
- CN202422937819.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-11-28
AI Technical Summary
The thickness difference in the overlapping area of the wrapper at the corner of the graphene thermal pad results in insufficient uniformity of thermal conductivity, making it unsuitable for high-performance electronic devices.
A rounded wrapping element with a width of 0.1–0.5 mm is set at the corner of the graphene gasket, and the radius of curvature and central angle of the wrapping element are limited within a specific range to make it flush with the gasket body and form a smooth transition.
It improves the thermal conductivity uniformity of graphene pads, making them suitable for high-performance electronic devices that require high heat dissipation uniformity.
Smart Images
Figure CN223584563U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of device heat dissipation, in particular to a heat dissipation system. BACKGROUND
[0002] Graphene is one of the ideal materials for preparing heat-conducting pads due to its excellent heat-conducting performance. Specifically, graphene heat-conducting pads are usually installed between a heat source (for example, an electronic device) and a heat sink so as to quickly transfer the heat generated by the heat source to the heat sink, thereby achieving efficient heat dissipation of the heat source and maintaining its normal operation. In the process of preparing the heat-conducting pad from graphene, a process of laminating and then slicing is usually adopted, so that the side surface of the graphene pad is a cutting edge, and the cutting edge has a phenomenon of powder falling. The falling powder has good electrical conductivity, and if it falls on a circuit board, it can easily cause a short circuit, resulting in damage to the electronic device. Therefore, a wrapping piece is usually bonded to the circumferential edge of the heat-conducting pad to solve the problem of device short circuit caused by falling powder. However, the current wrapping piece usually has more overlapping areas at the corners of the pad body, so that the wrapping piece wrapped on the pad body has a certain thickness difference, which affects the heat-conducting uniformity of the graphene pad, and further causes the graphene heat-conducting pad to be difficult to be applied to high-performance electronic devices with high heat dissipation uniformity. CONTENT OF THE UTILITY MODEL
[0003] The purpose of the present application is to provide a heat dissipation system which can effectively improve the problem of the wrapping piece having more overlapping areas at the corners of the pad body, thereby improving the heat-conducting uniformity of the graphene pad, and further being applicable to high-performance electronic devices with high heat dissipation uniformity.
[0004] The embodiment of the present application is implemented in this way:
[0005] The embodiment of the present application provides a heat dissipation system, which comprises a heat source, a graphene pad and a heat sink which are sequentially laminated and distributed along an overlapping direction. The graphene pad comprises a pad body and a wrapping piece which is covered on the circumferential edge of the pad body and bonded to the pad body. The wrapping piece is located in the overlapping area of the heat source and the heat sink. On the circumference of the pad body, the wrapping piece is circularly arc transitioned at any corner of the pad body, and the width of the wrapping piece covered on the circumferential edge of the two side surfaces of the pad body is 0.1-0.5mm.
[0006] In the technical solution, the wrapping part wrapped on the circumferential edge of the gasket body is located in the overlapping area between the heat source and the heat sink, that is, the wrapping part also acts as a heat transfer medium in the heat dissipation process. On this basis, the wrapping part at any corner of the gasket body is set in the form of a circular arc transition, and the width of the wrapping part covering the circumferential edge of the two side surfaces of the gasket body is limited in a specific range of 0.1-0.5 mm, which can reduce the probability of the wrapping part overlapping at the corner of the gasket body, thereby improving the uniformity of the heat conduction of the graphene gasket, so that the graphene gasket can be applied to high-performance electronic devices with high heat dissipation uniformity.
[0007] In some optional embodiments, in the overlapping direction, the shape of the orthographic projection of the gasket body is a rectangle, the circumferential edge of the gasket body is flush with the edge of the overlapping area, and the radius of curvature of the wrapping part at the four corners is 0.5-2 mm.
[0008] In the technical solution, the gasket body with the shape of the orthographic projection in the overlapping direction is a rectangle, which has the advantage of being suitable for a wide range of scenarios. At the same time, the circumferential edge of the gasket body is set to be flush with the edge of the overlapping area, which can more effectively transfer heat. In addition, the radius of curvature of the wrapping part at the four corners is limited in a specific range, so that the wrapping part has a suitable bending degree at the corners of the gasket body, thereby smoothly transitioning.
[0009] In some optional embodiments, in the circumferential direction of the gasket body, the central angle of the wrapping part at the corresponding corner is 85-95°.
[0010] In the technical solution, the central angle of the wrapping part at the corner is limited in a specific range, so that the wrapping part transitions more naturally at the corners of the gasket body, and at the same time, it is also convenient to set the wrapping part at the corners of the gasket body.
[0011] In some optional embodiments, in the circumferential direction of the gasket body, the central angle of the wrapping part at the corresponding corner is 90°.
[0012] In the technical solution, the central angle of the wrapping part at the corner is set to a specific 90°, so that the wrapping part has an excellent setting track at the corners of the gasket body, thereby making it easier to set the wrapping part at the corners of the gasket body; accordingly, the wrapping part after being set has excellent smoothness and smoothness.
[0013] In some optional embodiments, the gasket body is arc transitioned at any corner in the circumferential direction of the gasket body, and the gasket body and the wrapping piece have the same radius of curvature at the corresponding corner, so that the circumferential side of the gasket body and the circumferential inner side of the wrapping piece are fitted, and the circumferential edges of the heat source, the gasket body and the heat sink are flush.
[0014] In the technical solution, the gasket body and the wrapping piece have the same profile shape, have higher connection stability due to the larger bonding area, and are convenient to be wrapped by the wrapping piece due to the same profile shape, which helps to improve the wrapping efficiency of the wrapping piece. In addition, the circumferential edges of the heat source, the gasket body and the heat sink are flush, which has the advantages of good heat transfer effect and regular overall structure.
[0015] In some optional embodiments, the radius of curvature of the gasket body at any corner is 0.5-2 mm.
[0016] In the technical solution, the radius of curvature of the gasket body (i.e. the wrapping piece) at any corner is limited to a specific range, so that the gasket body and the wrapping piece have a suitable bending degree at the corner of the gasket body, and can be smoothly transitioned.
[0017] In some optional embodiments, the thickness of the wrapping piece is 1-30 μm.
[0018] In the technical solution, the thickness of the wrapping piece is limited to a specific range, so that the wrapping piece and the gasket body have high bonding force and are not easily peeled off under external force.
[0019] In some optional embodiments, the thickness of the gasket body is 0.2-0.4 mm.
[0020] In the technical solution, the thickness of the gasket body is limited to a specific range, so that the gasket body has the advantages of good heat conduction effect and high structural strength.
[0021] In some optional embodiments, the material of the wrapping piece is any one of polyurethane, polysiloxane, butyl rubber, paraffin, polyethylene terephthalate, epoxy resin, polyethylene, acrylic resin and polyimide.
[0022] In the technical solution, the material of the wrapping piece can be used in many types, which can provide many implementation solutions, so that the technical solution provided by the application can be popularized and applied.
[0023] In some alternative embodiments, the heat source is an electronic device.
[0024] In the technical solution above, the electronic device generates more heat during use and has higher requirements for heat dissipation uniformity. The electronic device is applied to the heat dissipation system provided by the embodiments of the present application, so that the advantages of the heat dissipation system can be better exerted. BRIEF DESCRIPTION OF DRAWINGS
[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0026] Figure 1 A cross-sectional view of a heat dissipation system provided by the embodiments of the present application;
[0027] Figure 2 A structural view of a graphene gasket provided by the embodiments of the present application;
[0028] Figure 3 A structural view of a first gasket body provided by the embodiments of the present application;
[0029] Figure 4 A structural view of a second gasket body provided by the embodiments of the present application; Figure 2 An enlarged view of part A in FIG. 6;
[0030] Figure 5 A structural view of a second gasket body provided by the embodiments of the present application;
[0031] FIG. 1 is a schematic view of a heat dissipation system provided by the embodiments of the present application; FIG. 2 is a schematic view of a heat source provided by the embodiments of the present application; FIG. 3 is a schematic view of a graphene gasket provided by the embodiments of the present application; FIG. 4 is a structural view of a gasket body provided by the embodiments of the present application; FIG. 5 is a structural view of a first gasket body provided by the embodiments of the present application; FIG. 6 is a structural view of a second gasket body provided by the embodiments of the present application; FIG. 7 is an enlarged view of part A in FIG. 6; FIG. 8 is a structural view of a third gasket body provided by the embodiments of the present application; and FIG. 9 is a structural view of a fourth gasket body provided by the embodiments of the present application. DETAILED DESCRIPTION
[0032] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, but not all the embodiments. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0033] Therefore, the following detailed description of the embodiments of the application provided in the drawings is not intended to limit the scope of the application claimed, but merely represents selected embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those of ordinary skill in the art without creative labor are within the scope of protection of the application.
[0034] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0035] In the description of the application, it should be noted that the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are merely for the convenience of describing the application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.
[0036] In the description of the application, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "mounted", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.
[0037] The following specifically describes a heat dissipation system provided by the application.
[0038] Referring to Figure 1 and Figure 2 The embodiments of the application provide a heat dissipation system 10, which comprises a heat source 100, a graphene gasket 200 and a heat sink 300 stacked in sequence along an overlapping direction, the graphene gasket 200 comprises a gasket body 210 and a wrapping piece 220 covering the circumferential edge of the gasket body 210 and bonded with the gasket body 210, the wrapping piece 220 is located in the overlapping area of the heat source 100 and the heat sink 300, and on the circumference of the gasket body 210, the wrapping piece 220 is arc transitioned at any corner of the gasket body 210, and the width of the wrapping piece 220 covering the circumferential edge of the two side surfaces of the gasket body 210 is 0.1-0.5mm.
[0039] In the present application, the wrapping piece 220 wrapped on the circumferential edge of the gasket body 210 is located in the overlapping area of the heat source 100 and the heat sink 300, that is, the wrapping piece 220 also acts as a heat transfer medium during the heat dissipation process. On this basis, the wrapping piece 220 at any corner of the gasket body 210 is provided in the form of a circular arc transition, and the width of the wrapping piece 220 covering the circumferential edge of the two side surfaces of the gasket body 210 is limited to a specific range of 0.1-0.5 mm, which can reduce the probability of the wrapping piece 220 overlapping at the corners of the gasket body 210, thereby improving the uniformity of heat conduction of the graphene gasket 200, so that the graphene gasket 200 can be suitable for high-performance electronic devices with high heat dissipation uniformity.
[0040] It should be noted that the width of the wrapping piece 220 covering the circumferential edge of the two side surfaces of the gasket body 210 is limited to a specific range of 0.1-0.5 mm, because if the width of the wrapping piece 220 is too small, the wrapping piece 220 cannot completely wrap the circumferential edge of the gasket body 210, and it is difficult to effectively solve the problem of powder falling off the side surface of the gasket body 210; if the width of the wrapping piece 220 is too large, the wrapping piece 220 is prone to wrinkles inside the corners of the gasket body 210, thereby affecting the heat transfer effect of the graphene gasket 200.
[0041] It should be noted that "the wrapping piece 220 is located in the overlapping area of the heat source 100 and the heat sink 300" can be that all of the wrapping piece 220 is located in the overlapping area, or part of the wrapping piece 220 is located in the overlapping area, which can be adjusted according to actual needs.
[0042] It should be noted that the configuration of the gasket body 210 is not limited, for example, the corners of the gasket body 210 can be right angles (i.e., the shape of the orthographic projection of the gasket body 210 in the overlapping direction can be a rectangle or a square), or the corners of the gasket body 210 can be in the form of a circular arc transition, which can be adaptively adjusted according to actual needs.
[0043] As an example, in the overlapping direction, the orthographic projection of the gasket body 210 is a rectangle (for details, see Figure 3 ), the circumferential edge of the gasket body 210 is flush with the edge of the overlapping area, and the radius of curvature of the wrapping piece 220 at the four corners is 0.5-2 mm, such as but not limited to any one of 0.5 mm, 1 mm, 1.5 mm, and 2 mm or a range value between any two of them.
[0044] In this embodiment, the gasket body 210 is rectangular in shape in the overlapping direction, which has the advantage of being applicable to a wide range of scenarios, and at the same time, the circumferential edge of the gasket body 210 is flush with the edge of the overlapping area, which can more effectively transfer heat. In addition, the radius of curvature of the wrapping piece 220 at the four corners is limited to a certain range, so that the wrapping piece 220 has a suitable bending degree at the corners of the gasket body 210, thereby being able to transition more smoothly and smoothly.
[0045] It should be noted that when the gasket body 210 is rectangular in shape in the overlapping direction, in order to achieve the arc transition of the wrapping piece 220 at the corners of the gasket body 210, the corresponding existing manufacturing process is usually arc edge covering. Based on the process characteristics of the arc edge covering, the circumferential inner side of the wrapping piece 220 and the circumferential side wall of the gasket body 210 cannot be directly in contact, i.e. there is a gap between them. Therefore, by setting the circumferential edge of the gasket body 210 flush with the edge of the overlapping area, compared to locating the gap part in the overlapping area (the heat transfer effect at the gap is poor), heat transfer can be more effective, thereby better assisting the heat source 100 in heat dissipation.
[0046] Referring to Figure 4 As an example, the central angle of the wrapping piece 220 at the corresponding corner on the circumference of the gasket body 210 is 85-95°, such as but not limited to any one of 85°, 88°, 90°, 92° and 95° or a range value between any two of them.
[0047] In this embodiment, the central angle of the wrapping piece 220 at the corner is limited to a certain range, so that the wrapping piece 220 transitions more naturally at the corners of the gasket body 210, and at the same time, it is also convenient to set the wrapping piece 220 at the corners of the gasket body 210.
[0048] Referring to Figure 4 As an example, the central angle of the wrapping piece 220 at the corresponding corner on the circumference of the gasket body 210 is 90°.
[0049] In this embodiment, the central angle of the wrapping piece 220 at the corner is set to a specific 90°, so that the wrapping piece 220 has an excellent setting trajectory at the corners of the gasket body 210, thereby being able to more easily set the wrapping piece 220 at the corners of the gasket body 210; correspondingly, the wrapping piece 220 after being set also has excellent smoothness and smoothness at this point.
[0050] As an example, the gasket body 210 is arc transitioned at any corner on the circumference of the gasket body 210 (for details, refer to Figure 5), and the curvature radius of the gasket body 210 and the wrapping piece 220 at the corresponding corner is the same, so that the circumferential side of the gasket body 210 and the circumferential inner side of the wrapping piece 220 are fitted, and the circumferential edges of the heat source 100, the gasket body 210 and the heat spreader 300 are flush.
[0051] In this embodiment, the gasket body 210 and the wrapping piece 220 have the same profile shape, and the area of the bonding area is large, so that the connection stability after bonding is higher, and the profile shapes of the two are basically the same (the side and the two contact surfaces of the gasket body 210 can be effectively bonded with the wrapping piece 220), which facilitates the wrapping of the wrapping piece 220 on the outer circumferential edge of the gasket body 210, and helps to improve the wrapping efficiency of the wrapping piece 220. In addition, the circumferential edges of the heat source 100, the gasket body 210 and the heat spreader 300 are arranged in flush form, which has the advantages of good heat transfer effect and regular overall structure.
[0052] As an example, the curvature radius of the gasket body 210 at any corner is 0.5-2mm, such as but not limited to 0.5mm, 1mm, 1.5mm and 2mm, or a range value between any two of them.
[0053] In this embodiment, the curvature radius of the gasket body 210 (i.e. the wrapping piece 220) at any corner is limited to a certain range when the gasket body 210 and the wrapping piece 220 have the same profile shape, so that both have a suitable bending degree at the corner of the gasket body 210, which can be smoothly and smoothly transitioned.
[0054] It should be noted that the thickness of the wrapping piece 220 is not limited and can be adaptively adjusted according to actual needs.
[0055] As an example, the thickness of the wrapping piece 220 is 1-30μm, such as but not limited to 1μm, 5μm, 10μm, 15μm, 20μm, 25μm and 30μm, or a range value between any two of them.
[0056] In this embodiment, the thickness of the wrapping piece 220 is limited to a certain range, so that the wrapping piece 220 and the gasket body 210 have high bonding force after bonding and are not easily peeled off under external force.
[0057] It should be noted that the thickness of the gasket body 210 is not limited and can be adaptively adjusted according to actual needs.
[0058] As an example, the thickness of the gasket body 210 is 0.2-0.4mm, for example but not limited to any one of 0.2mm, 0.25mm, 0.3mm, 0.35mm and 0.4mm or a range value between any two of them.
[0059] In this embodiment, the thickness of the gasket body 210 is limited within a certain range, so that the gasket body 210 has the advantages of good heat conduction effect and high structural strength.
[0060] As an example, the material of the wrapping piece 220 is any one of polyurethane, polysiloxane, butadiene styrene emulsion, paraffin, polyethylene terephthalate, epoxy resin, polyethylene, acrylic resin and polyimide.
[0061] In this embodiment, the material of the wrapping piece 220 can be used in many kinds, which can provide more implementation schemes, so as to facilitate the popularization and application of the technical solutions provided by the embodiments of the present application.
[0062] As an example, the heat source 100 is an electronic device, for example, the electronic device is a CPU or a GPU.
[0063] In this embodiment, the electronic device generates more heat during use and has higher requirements for uniformity of heat dissipation. By applying the electronic device to the heat dissipation system 10 provided by the embodiments of the present application, the advantages of the heat dissipation system 10 can be better played.
[0064] It should be noted that the structure or functional units in the heat dissipation system 10 which are not particularly mentioned or limited can be set according to the conventional selection in the art.
[0065] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A heat dissipation system, characterized in that, The device includes a heat source, a graphene pad, and a heat sink, which are stacked sequentially along the overlapping direction. The graphene pad includes a pad body and a wrapping element that covers the circumferential edge of the pad body and is bonded to the pad body. The wrapping element is located in the overlapping area of the heat source and the heat sink. In the circumferential direction of the pad body, the wrapping element has a rounded transition at any corner of the pad body, and the width of the wrapping element covering the circumferential edges of both sides of the pad body is 0.1 to 0.5 mm.
2. The heat dissipation system according to claim 1, characterized in that, In the overlapping direction, the orthographic projection of the gasket body is rectangular, the circumferential edge of the gasket body is flush with the edge of the overlapping area, and the radius of curvature of the package at the four corners is 0.5 to 2 mm.
3. The heat dissipation system according to claim 2, characterized in that, In the circumferential direction of the gasket body, the central angle of the package at the corresponding corner is 85-95°.
4. The heat dissipation system according to claim 3, characterized in that, In the circumferential direction of the gasket body, the central angle of the package at the corresponding corner is 90°.
5. The heat dissipation system according to claim 1, characterized in that, In the circumferential direction of the gasket body, the gasket body has a rounded transition at any corner, and the gasket body and the package have the same radius of curvature at the corresponding corner, so that the circumferential side of the gasket body and the circumferential inner side of the package fit together, and the circumferential edges of the heat source, the gasket body and the heat sink are flush.
6. The heat dissipation system according to claim 5, characterized in that, The radius of curvature of the gasket body at any corner is 0.5 to 2 mm.
7. The heat dissipation system according to any one of claims 1 to 6, characterized in that, The thickness of the package is 1–30 μm.
8. The heat dissipation system according to any one of claims 1 to 6, characterized in that, The thickness of the gasket body is 0.2 to 0.4 mm.
9. The heat dissipation system according to any one of claims 1 to 6, characterized in that, The material of the package is any one of polyurethane, polysiloxane, styrene-butadiene latex, paraffin wax, polyethylene terephthalate, epoxy resin, polyethylene, acrylic resin and polyimide.
10. The heat dissipation system according to any one of claims 1 to 6, characterized in that, The heat source is an electronic device.