Method for manufacturing a radiator structure formed by folding a graphene sheet

Abstract

The present invention discloses a manufacturing method of a radiator structure based on the origami forming of graphene flakes, which includes the following steps. Step S1: Provide a heat dissipation base having a base top surface and a base bottom surface arranged oppositely, and a bowl-shaped groove portion with an upward opening is formed on the base top surface. Step S2: Provide a fixing plate on which a bowl-shaped protrusion portion corresponding to the bowl-shaped groove portion is formed. And step S3: Provide a graphene flake, which is placed between the bowl-shaped protrusion portion and the bowl-shaped groove portion. A spoke-shaped incision or crease is formed on the graphene flake, and the graphene flake is larger than the bowl-shaped groove portion. The beneficial effect of the present invention is that: by using the clamping action between the heat dissipation base and the fixing plate, an umbrella-shaped structure of the graphene flake is formed, forming a graphene flake radiator, which not only greatly increases the heat dissipation area, but also greatly reduces the manufacturing cost of the graphene radiator, and is suitable for large-scale promotion.

Description

Technical Field

[0001] The present invention relates to a heat dissipation device, in particular to a manufacturing method of a radiator structure formed by folding graphene flakes into origami shapes. Background Art

[0002] Graphene has excellent thermal conductivity, and its thermal conductivity coefficient is nearly ten times that of copper. However, since graphene is a powdery material and difficult to be practically applied, currently, most of the graphene is doped in polymer materials to form a film, and then this film is used as a heat conduction medium. Since the strength of the film is low and it cannot be directly used as a radiator, the performance of graphene as an excellent heat dissipation material cannot be fully exerted. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the performance of copper radiators in the prior art is poor, and a manufacturing method of a radiator structure formed by folding graphene flakes into origami shapes is provided.

[0004] To achieve this purpose, the technical solution of the present invention is as follows: A radiator structure formed by folding graphene flakes into origami shapes includes:

[0005] A heat dissipation base having a base top surface and a base bottom surface disposed opposite to each other, and an upwardly opening bowl-shaped groove portion is formed on the base top surface;

[0006] A fixing plate having a bowl-shaped protrusion portion corresponding to the bowl-shaped groove portion, and a forming space is defined between the bowl-shaped protrusion portion and the bowl-shaped groove portion; and

[0007] A graphene flake is placed between the bowl-shaped protrusion portion and the bowl-shaped groove portion, so that the graphene flake forms an upwardly opening umbrella-shaped structure. Thus, the graphene flake has a fixing portion inside the forming space and an unfolded portion outside the forming space, and the unfolded portion constitutes heat dissipation fins;

[0008] Wherein, the base bottom surface is the mounting surface of the component to be cooled.

[0009] As a preferred embodiment of the radiator structure formed by folding graphene flakes into origami shapes, a coupling hole is formed on the heat dissipation base, and a coupled hole corresponding to the coupling hole is provided on the fixing plate. The coupling hole and the coupled hole are connected by a connecting member, so that the heat dissipation base and the fixing plate are fixedly coupled.

[0010] As a preferred embodiment of the radiator structure formed by folding graphene flakes into origami shapes, the graphene flake is a polymer heat conduction film doped with graphene material.

[0011] As a preferred solution for the radiator structure formed by folding graphene flakes, vehicle spoke-shaped cuts or creases are formed on the graphene flakes.

[0012] As a preferred solution for the radiator structure formed by folding graphene flakes, it further includes a positioning ring that shapes the unfolded portion of the graphene flakes.

[0013] As a preferred solution for the radiator structure formed by folding graphene flakes, the bonding method between the positioning ring and the unfolded portion of the graphene flakes is adhesive fixation.

[0014] As a preferred solution for the radiator structure formed by folding graphene flakes, the heat dissipation base is made of a metal material.

[0015] As a preferred solution for the radiator structure formed by folding graphene flakes, the fixing piece is made of a metal material.

[0016] The present invention also provides a manufacturing method for a heat dissipation structure formed by folding graphene flakes, including the following steps:

[0017] Step S1: Provide a heat dissipation base having a base top surface and a base bottom surface arranged opposite to each other, and a bowl-shaped groove portion with an upward opening is formed on the base top surface;

[0018] Step S2: Provide a fixing disk on which a bowl-shaped convex portion corresponding to the bowl-shaped groove portion is formed; and

[0019] Step S3: Provide a graphene flake, which is placed between the bowl-shaped convex portion and the bowl-shaped groove portion, and the graphene flake is clamped and formed by the bowl-shaped convex portion and the bowl-shaped groove portion, so that the graphene flake forms an umbrella-shaped structure with an upward opening. Thus, the graphene flake has a fixed portion inside the forming space and an unfolded portion outside the forming space, and the unfolded portion constitutes heat dissipation fins.

[0020] As a preferred solution for the method of the heat dissipation structure formed by folding graphene flakes, it further includes Step S4: Provide a positioning ring to shape the unfolded portion of the graphene flake.

[0021] Compared with the prior art, the beneficial effects of the present invention are at least as follows: The umbrella-shaped structure of the graphene flake is formed by the clamping action between the heat dissipation base and the fixing disk, forming a graphene flake radiator, which not only greatly increases the heat dissipation area but also greatly reduces the manufacturing cost of the graphene radiator, making it suitable for large-scale promotion.

[0022] In addition to the technical problems solved by the present invention, the technical features constituting the technical solution, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that the present invention can solve, other technical features included in the technical solution, and the beneficial effects brought about by these technical features will be further described in detail with reference to the accompanying drawings. Description of the Drawings

[0023] Figure 1 is a schematic structural diagram of an embodiment of the present invention.

[0024] Figure 2 is a schematic diagram of the principle of clamping and forming a graphene sheet by a heat dissipation base and a fixing plate in an embodiment of the present invention.

[0025] Figure 3 is a schematic diagram of fin positioning in an embodiment of the present invention.

[0026] In the figure: 1, heat dissipation base; 2, fixing plate; 3, coupling hole; 4, graphene sheet; 41, fixing part; 42, unfolding part; 5, fixing screw; 6, positioning ring; 7, bonding point. Detailed Description of the Embodiments

[0027] The present invention will be further described in detail below with reference to the accompanying drawings through specific embodiments. It should be noted here that the description of these embodiments is used to help understand the present invention, but does not limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0028] Please refer to Figures 1 to 3 , which shows a heat sink structure formed by folding a graphene sheet 4, and can be used for heat dissipation of LEDs or other heat-dissipating components. The heat sink structure mainly consists of a heat dissipation base 1, a fixing plate 2, a graphene sheet 4, a positioning ring 6 and other components.

[0029] The heat dissipation base 1 is made of a metal material (such as copper). The heat dissipation base 1 has a base top surface and a base bottom surface arranged opposite to each other. An upwardly opening bowl-shaped groove portion is formed on the base top surface. The edge of the bowl-shaped groove portion is high and the bottom is low. Among them, the base bottom surface is the mounting surface of the heat-dissipating component, and the mounting method can be bonding or others.

[0030] The fixing plate 2 is made of a metal material (such as copper). A bowl-shaped convex portion corresponding to the bowl-shaped groove portion is formed on the fixing plate 2. A forming space is defined between the bowl-shaped convex portion and the bowl-shaped groove portion. Please refer to Figure 2 , the geometric shape of the forming space can shape the graphene sheet 4 into any angle and shape.

[0031] In this embodiment, a coupling hole 3 is formed on the heat dissipation base 1, and a coupled hole corresponding to the coupling hole is formed on the fixing plate 2. The coupling hole and the coupled hole are connected by a fixing screw 5 as a connecting member, so that the heat dissipation base 1 and the fixing plate 2 are fixedly coupled.

[0032] The graphene sheet 4 is a polymer thermal conductive film doped with graphene material. A width-shaped cut or fold is formed on the graphene sheet 4. The graphene sheet 4 is larger than the bowl-shaped groove portion. The graphene sheet 4 is placed between the bowl-shaped protrusion and the bowl-shaped groove portion. The graphene sheet 4 is clamped and formed by the bowl-shaped protrusion and the bowl-shaped groove portion, so that the graphene sheet 4 forms an umbrella-shaped structure that opens upward. Thereby, the graphene sheet 4 has a fixing portion 41 located inside the molding space and an unfolding portion 42 located outside the molding space. The unfolding portion 42 constitutes a heat dissipation fin.

[0033] See also Figure 3 The positioning ring 6 shapes the expanded portion 42 of the graphene sheet 4 into a heat dissipation fin with a certain angle and a certain interval. The angle and interval are determined by specific design requirements. The positioning ring 6 and the expanded portion 42 of the graphene sheet 4 are bonded and fixed to form a bonding point 7.

[0034] It is not difficult to see from the above that the method of clamping and shaping the graphene sheet 4 by cleverly utilizing the geometric structure between the heat dissipation base 1 and the fixing plate 2 makes the graphene sheet 4 form an umbrella-shaped structure. Then, the cuts and folds of the graphene sheet 4 are further utilized to realize a heat sink of a specific configuration, which not only utilizes the excellent heat dissipation performance of graphene, but also increases the heat dissipation area, and further utilizes the radiation heat dissipation performance of graphene to enhance heat dissipation.

[0035] The above only expresses the implementation mode of the present invention, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be based on the attached claims.

Claims

1. A manufacturing method of a heat dissipation structure formed by folding graphene flakes, characterized in that, It includes the following steps: Step S1: Provide a heat dissipation base. The heat dissipation base is made of metal and has a base top surface and a base bottom surface that are oppositely arranged. An upwardly open bowl-shaped groove portion is formed on the base top surface. Step S2: Provide a fixing plate. The fixing plate is made of metal and has a bowl-shaped convex portion corresponding to the bowl-shaped groove portion; and, Step S3: Provide a graphene sheet. The graphene sheet is a polymer heat conduction film doped with graphene material. It is placed between the bowl-shaped convex portion and the bowl-shaped groove portion. A spoke-shaped incision or crease is formed on the graphene sheet. The graphene sheet is larger than the bowl-shaped groove portion. The bowl-shaped convex portion and the bowl-shaped groove portion are used to clamp and form the graphene sheet, so that the graphene sheet forms an upwardly open umbrella-shaped structure. A forming space is defined between the bowl-shaped convex portion and the bowl-shaped groove portion. The graphene sheet has a fixing portion inside the forming space and an unfolded portion outside the forming space. The unfolded portion constitutes a heat dissipation fin. Wherein, the base bottom surface is the installation surface of the component to be cooled. Combination holes are formed on the heat dissipation base, and the fixing plate has combination holes corresponding to the combination holes. The combination holes and the corresponding holes are connected by a connecting member, so that the heat dissipation base and the fixing plate are fixedly combined.

2. The manufacturing method of the heat dissipation structure based on the origami forming of graphene flakes according to claim 1, characterized in that, It further includes Step S4: Provide a positioning ring to shape the unfolded portion of the graphene sheet.

Images