A cold-welded uniform heat plate structure

Abstract

This utility model discloses a cold-welded heat spreader structure, relating to the field of heat spreaders. It includes a heat spreader body, a groove on one side of the CPU board, and the heat spreader body installed inside the groove. Heat dissipation fins are fixed to one side of the heat spreader body. The heat spreader body and the CPU board are fixed together by soldering. This utility model uses cold welding to fix the heat spreader body, replacing traditional brazing, thus avoiding damage to the heat spreader from high temperatures. High bonding strength and low thermal resistance form a metallurgical bond with a clean interface. It has good material compatibility and potential for combinations of materials with large differences in melting points. Heat spreader welding typically does not require brazing or flux, reducing contamination.

Description

Technical Field

[0001] This utility model relates to the field of heat spreaders, specifically a cold-welding heat spreader structure. Background Technology

[0002] The heat spreader is a flat, closed type, consisting of a shell, capillary structure, support structure, and working fluid. The shell is usually made of copper sheet by stamping, but some are made of stainless steel or other materials to meet special requirements. The capillary structure is mainly of four types: wire mesh, groove, sintered, and composite, and is used to achieve the reflux of the working fluid. The support structure is used to maintain the shape and strength of the vacuum chamber.

[0003] Existing heat spreaders are usually fixed by brazing during use. However, the brazing process involves high temperatures, which can easily damage the surface of the heat spreader and affect its service life. Utility Model Content

[0004] Therefore, the purpose of this utility model is to provide a cold welding heat dissipation plate structure to solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cold-welded heat spreader structure, comprising a heat spreader body and a CPU board, wherein a groove is provided on one side of the CPU board, and the heat spreader body is installed inside the groove; heat dissipation fins are fixed on one side of the heat spreader body; and the heat spreader body is formed by cold welding.

[0006] By adopting the above technical solution, the heat spreader body is fixed by cold welding instead of traditional brazing, which can avoid damage to the heat spreader by high temperature; high bonding strength and low thermal resistance form a metallurgical bond with a pure interface; good material compatibility and potential for combinations of materials with large differences in melting point; heat spreader welding usually does not require brazing or flux, reducing pollution.

[0007] The present invention is further configured such that a plurality of support rods are provided on one side of the CPU board, and the ends of the support rods are provided with mounting holes.

[0008] Preferably, the CPU board can be easily installed and fixed by setting multiple sets of support rods.

[0009] The present invention is further configured such that the heat dissipation plate body and the heat dissipation fins are connected by soldering, and the number of heat dissipation fins is multiple sets, which are evenly distributed on one side of the heat dissipation plate body.

[0010] Preferably, the heat dissipation fins are fixed to one side of the heat spreader body by soldering, avoiding the problem of fixing them to the heat spreader body by brazing, and avoiding the problem of easy damage to the inside of the heat spreader body.

[0011] In summary, the present invention has the following main advantages: This invention features a heat spreader, grooves, and heat dissipation fins. The heat spreader body is fixed by cold welding, replacing the traditional brazing method, which avoids damage to the heat spreader from high temperatures. High bonding strength and low thermal resistance form a metallurgical bond with a pure interface. It has good material compatibility and potential for combinations of materials with large differences in melting points. The heat spreader usually does not require brazing or flux during welding, reducing pollution. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a side view of the present invention; Figure 3 This is a perspective view of the CPU board of this utility model.

[0013] Explanation of reference numerals in the attached figures: 1. Heat sink body; 2. CPU board; 3. Support rod; 4. Heat sink fins; 5. Groove. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0015] The embodiments of this utility model will be described below based on its overall structure.

[0016] Please see Figures 1-3 The system includes a heat spreader body 1 and a CPU board 2. A groove 5 is provided on one side of the CPU board 2, and the heat spreader body 1 is installed inside the groove 5. A heat dissipation fin 4 is fixed on one side of the heat spreader body 1. The heat spreader body 1 is formed by cold welding, which avoids the problem of easy damage to the internal structure of the heat spreader body 1 caused by brazing. The inner wall of the groove 5 is in contact with the outer wall of the heat spreader body 1. Both the heat spreader body 1 and the CPU board 2 are set to be flat. The flat shape of the heat spreader body 1 and the CPU board 2 can increase the contact area with the heat sink, thereby improving the heat dissipation efficiency.

[0017] For details regarding the above embodiments, please refer to [link / reference]. Figure 1 and Figure 3 The CPU board 2 has multiple sets of support rods 3 on one side, and the ends of the support rods 3 are provided with mounting holes. The multiple sets of support rods 3 can increase the contact area, thereby facilitating the installation and fixing of the CPU board 2.

[0018] For details regarding the above embodiments, please refer to [link / reference]. Figure 2 The heat dissipation plate body 1 and the heat dissipation fins 4 are connected by soldering. There are multiple sets of heat dissipation fins 4, which are evenly distributed on one side of the heat dissipation plate body 1. The heat dissipation fins 4 are fixed to one side of the heat dissipation plate body 1 by soldering, avoiding the problem of easy damage to the inside of the heat dissipation plate body 1 by brazing.

[0019] In practical operation, the heat dissipation fins 4 are soldered to one side of the heat spreader body 1 by soldering, and then the heat spreader body 1 and the CPU board 2 are also welded and fixed by cold soldering.

[0020] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A cold-welding heat spreader structure, comprising a heat spreader body (1) and a CPU board (2), characterized in that: The CPU board (2) has a groove (5) on one side, and a heat spreader body (1) is installed inside the groove (5). A heat dissipation fin (4) is fixed on one side of the heat spreader body (1). The heat spreader body (1) and the CPU board (2) are fixed by cold welding.

2. The cold welding heat spreader structure according to claim 1, characterized in that: The CPU board (2) is provided with multiple sets of support rods (3) on one side.

3. The cold welding heat spreader structure according to claim 1, characterized in that: The heat spreader body (1) and the heat dissipation fins (4) are connected by soldering.

4. The cold welding heat spreader structure according to claim 1, characterized in that: The number of heat dissipation fins (4) is multiple sets, and the multiple sets of heat dissipation fins (4) are evenly distributed on one side of the heat spreader body (1).

5. The cold welding heat spreader structure according to claim 2, characterized in that: The end of the support rod (3) is provided with an installation hole.

6. The cold welding heat spreader structure according to claim 1, characterized in that: The inner wall of the groove (5) is in contact with the outer wall of the heat spreader body (1).

7. The cold welding heat spreader structure according to claim 1, characterized in that: Both the heat spreader body (1) and the CPU board (2) are configured to be flat.

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