High-efficiency heat-conducting composite graphite heat dissipation patch

Abstract

The utility model relates to the technical field of graphite heat dissipation patches, discloses a high-efficiency heat-conducting composite graphite heat dissipation patch, and solves the problems that heat is conducted only through graphite, the heat dissipation path is limited, the heat dissipation mode is single, and the cooling speed of equipment is low. The utility model relates to a high-efficiency heat-conducting composite graphite heat dissipation patch, which comprises a graphite sheet, an upper heat-conducting layer, a buffer layer, an insulating layer, a protective film, a lower heat-conducting layer, a pressure-sensitive adhesive layer, a release film layer, a cavity, an elastic heat conductor and heat-conducting holes, due to the arrangement of the heat conduction holes, not only is the air permeability of the heat dissipation structure improved, but also air circulation inside and outside the cavity is promoted, and heat evacuation is further accelerated through natural convection.

Description

Technical Field

[0001] The utility model relates to the field of graphite heat dissipation patches, in particular to a high-efficiency heat-conducting composite graphite heat dissipation patch. Background Art

[0002] Graphite heat sink, also known as graphite thermal conductive sheet or graphite heat dissipation film, is a high-tech heat dissipation product based on graphite material. This patch mainly utilizes the excellent thermal conductivity of graphite. Graphite heat sink has a wide range of applications in electronic equipment heat dissipation, battery thermal management, optoelectronics and other fields due to its superior thermal conductivity and unique physical properties.

[0003] Existing heat sinks only conduct heat through graphite, with a single heat dissipation method and a certain heat dissipation path and range. Due to the limited heat dissipation path and single heat dissipation method, graphite heat sinks may cause the device to cool down slowly. Utility Model Content

[0004] The purpose of the utility model is to provide a high-efficiency thermally conductive composite graphite heat sink patch. The device is used to work, thereby solving the problem that heat conduction is only carried out through graphite, the heat dissipation path is limited, the heat dissipation method is single, and the equipment cooling speed is slow.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-efficiency thermally conductive composite graphite heat sink patch, comprising a graphite sheet, an upper thermally conductive layer is arranged on the upper surface of the graphite sheet, a buffer layer is arranged on the upper surface of the upper thermally conductive layer, an insulating layer is arranged on the upper surface of the buffer layer, a protective film is arranged on the upper surface of the insulating layer, a lower thermally conductive layer is arranged on the lower surface of the graphite sheet, a pressure-sensitive adhesive layer is arranged on the lower surface of the lower thermally conductive layer, a release film layer is arranged on the lower surface of the pressure-sensitive adhesive layer, cavities are provided inside the upper thermally conductive layer and the lower thermally conductive layer, an elastic thermal conductor is provided inside the cavity, thermal conductive holes are provided on the inner wall of the cavity, multiple groups of the elastic thermal conductors and the thermal conductive holes are provided, and the multiple groups of the elastic thermal conductors are evenly distributed inside the cavity.

[0006] Furthermore, the elastic thermal conductor is a component formed by a composite of a rubber matrix and a high thermal conductivity filler material, and the high thermal conductivity filler is evenly distributed in the rubber matrix.

[0007] Furthermore, the upper heat-conducting layer and the lower heat-conducting layer are both components made of a metal foil material.

[0008] Furthermore, the buffer layer is a component made of a buffer foam material.

[0009] Furthermore, the insulating layer is a component made of polyimide material.

[0010] Furthermore, the protective film is a component made of a polyester film material.

[0011] Furthermore, the pressure-sensitive adhesive layer is a component made of acrylic material.

[0012] Furthermore, the release film layer is a component made of a silicon release film material.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0014] The utility model proposes a high-efficiency thermally conductive composite graphite heat sink patch, in which an upper thermally conductive layer and a lower thermally conductive layer provide a path for heat conduction, and the heat is transferred upward to the graphite sheet through the lower thermally conductive layer, and then continued to be transferred upward to the environment through the upper thermally conductive layer. During the transfer process, the cavity and the elastic thermal conductor increase the surface area of ​​heat transfer, which is convenient for faster heat transfer from the heat source to the graphite sheet. The provision of the thermal conductive holes not only increases the air permeability of the heat dissipation structure, but also promotes air circulation inside and outside the cavity, which is convenient for further accelerating the evacuation of heat through natural convection, and solves the problem that heat conduction is only carried out through graphite, the heat dissipation path is limited, the heat dissipation method is single, and the equipment cooling speed is slow. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] In the figure: 1. graphite sheet; 11. upper heat-conducting layer; 12. lower heat-conducting layer; 2. cavity; 21. elastic heat conductor; 22. heat-conducting hole; 3. buffer layer; 4. insulating layer; 5. protective film; 6. pressure-sensitive adhesive layer; 7. release film layer. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0019] Combination Figure 1A high-efficiency thermally conductive composite graphite heat sink patch comprises a graphite sheet 1, an upper thermally conductive layer 11 is arranged on the upper surface of the graphite sheet 1, a buffer layer 3 is arranged on the upper surface of the upper thermally conductive layer 11, an insulating layer 4 is arranged on the upper surface of the buffer layer 3, a protective film 5 is arranged on the upper surface of the insulating layer 4, a lower thermally conductive layer 12 is arranged on the lower surface of the graphite sheet 1, a pressure-sensitive adhesive layer 6 is arranged on the lower surface of the lower thermally conductive layer 12, a release film layer 7 is arranged on the lower surface of the pressure-sensitive adhesive layer 6, a cavity 2 is provided inside the upper thermally conductive layer 11 and the lower thermally conductive layer 12, an elastic thermal conductor 21 is provided inside the cavity 2, a thermally conductive hole 22 is provided on the inner wall of the cavity 2, multiple groups of the elastic thermal conductor 21 and the thermally conductive hole 22 are provided, and the multiple groups of elastic thermal conductors 21 are evenly distributed inside the cavity 2.

[0020] The utility model is further described below in conjunction with embodiments.

[0021] Embodiment 1:

[0022] See also Figure 1 The elastic thermal conductor 21 is a component composed of a rubber matrix and a high thermal conductivity filler material. The high thermal conductivity filler is evenly distributed in the rubber matrix. The high thermal conductivity filler is evenly distributed in the rubber matrix to improve the overall thermal conductivity performance, so that heat is transferred from the heat source to the graphite sheet 1 more quickly to improve the heat dissipation efficiency.

[0023] The upper heat-conducting layer 11 and the lower heat-conducting layer 12 are both components made of a metal foil material. Metal has extremely high thermal conductivity, and the metal foil can quickly absorb and transfer heat, thereby effectively improving the overall thermal management performance.

[0024] The buffer layer 3 is a component made of a buffer foam material. The buffer foam has excellent elasticity and is easy to absorb and disperse energy when subjected to external impact, thereby effectively reducing damage to the inner structure of the buffer layer 3.

[0025] The insulating layer 4 is a component made of a polyimide material. Polyimide can effectively block the passage of current to maintain good electrical insulation.

[0026] The protective film 5 is a component made of a polyester film material. The polyester film has high hardness, good toughness, abrasion resistance and tear resistance, and is convenient for effectively resisting physical damage and providing a reliable protective barrier.

[0027] The pressure-sensitive adhesive layer 6 is a component made of an acrylic material. The acrylic pressure-sensitive adhesive can quickly form adhesion after slight pressure is applied, without the need for additional curing or drying processes, which greatly improves assembly efficiency and ease of use.

[0028] The release film layer 7 is a component made of a silicon release film material, and a release agent such as fluorinated silicone is coated on the surface of the silicon release film material, ensuring that it can be easily and cleanly separated from the pressure-sensitive adhesive layer 6 when needed without leaving any residual adhesive.

[0029] When in use, tear off the release film layer 7, and stick the heat sink patch to the outer surface of the device that needs heat dissipation through the pressure-sensitive adhesive layer 6. The upper heat-conducting layer 11 and the lower heat-conducting layer 12 provide a heat conduction path. The heat is transferred upward to the graphite sheet 1 through the lower heat-conducting layer 12, and then continues to be transferred upward to the environment through the upper heat-conducting layer 11. During the transfer process, the cavity 2 and the elastic heat conductor 21 increase the surface area of ​​heat transfer, which facilitates faster transfer of heat from the heat source to the graphite sheet 1. The setting of the thermal conductive hole 22 not only increases the air permeability of the heat dissipation structure, but also promotes air circulation inside and outside the cavity 2, which is convenient for further accelerating the evacuation of heat through natural convection. The buffer layer 3 is convenient for absorbing and dispersing external force impacts. The insulating layer 4 is convenient for maintaining good electrical insulation. The protective film 5 provides surface protection for the entire heat dissipation structure to prevent physical wear and chemical erosion.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A highly efficient thermally conductive composite graphite heat sink patch, comprising a graphite sheet (1), characterized in that: An upper heat-conducting layer (11) is arranged on the upper surface of the graphite sheet (1), a buffer layer (3) is arranged on the upper surface of the upper heat-conducting layer (11), an insulating layer (4) is arranged on the upper surface of the buffer layer (3), a protective film (5) is arranged on the upper surface of the insulating layer (4), a lower heat-conducting layer (12) is arranged on the lower surface of the graphite sheet (1), a pressure-sensitive adhesive layer (6) is arranged on the lower surface of the lower heat-conducting layer (12), a release film layer (7) is arranged on the lower surface of the pressure-sensitive adhesive layer (6), a cavity (2) is provided inside the upper heat-conducting layer (11) and the lower heat-conducting layer (12), an elastic heat conductor (21) is provided inside the cavity (2), a heat-conducting hole (22) is provided on the inner wall of the cavity (2), the elastic heat conductor (21) and the heat-conducting hole (22) are provided in multiple groups, and the multiple groups of the elastic heat conductor (21) are evenly distributed inside the cavity (2).

2. The high-efficiency thermally conductive composite graphite heat sink according to claim 1, characterized in that: The elastic heat conductor (21) is a component formed by a composite of a rubber matrix and a high heat conductivity filler material, wherein the high heat conductivity filler is evenly distributed in the rubber matrix.

3. The high-efficiency thermally conductive composite graphite heat sink according to claim 1, characterized in that: The upper heat-conducting layer (11) and the lower heat-conducting layer (12) are both components made of a metal foil material.

4. The high-efficiency thermally conductive composite graphite heat sink according to claim 1, characterized in that: The buffer layer (3) is a component made of a buffer foam material.

5. The high-efficiency thermally conductive composite graphite heat sink according to claim 1, characterized in that: The insulating layer (4) is a component made of polyimide material.

6. The high-efficiency thermally conductive composite graphite heat sink according to claim 1, characterized in that: The protective film (5) is a component made of a polyester film material.

7. The high-efficiency thermally conductive composite graphite heat sink according to claim 1, characterized in that: The pressure-sensitive adhesive layer (6) is a component made of acrylic ester material.

8. The high-efficiency thermally conductive composite graphite heat sink according to claim 1, characterized in that: The release film layer (7) is a component made of a silicon release film material.

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