Graphite heat conduction device and heat conduction system

Abstract

The utility model relates to a kind of graphite heat conduction device and heat conduction system, belong to heat conduction device technical field, the graphite heat conduction device includes heat source end connecting piece, cooling end connecting piece and flexible heat conduction component, flexible heat conduction component is the structural member stacked by multiple flexible graphite strip, heat source end connecting piece and cooling end connecting piece are respectively fixed at the both ends of flexible heat conduction component, using the structure, heat source end connecting piece is installed on heating equipment to absorb heat energy when using, cooling end connecting piece is installed on heat dissipation equipment to emit heat energy, heat is conducted by the flexible heat conduction component formed by multiple flexible graphite strip, flexible connection, bendable, simple structure, zero energy consumption, small space occupation, easy to install, to be more applicable to the heat dissipation demand of equipment under narrow space and vibration condition, make up the deficiency of air-cooled and liquid-cooled equipment.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat conduction devices, and specifically relates to a graphite heat conduction device and heat conduction system. Background Technology

[0002] In recent years, with the increasing integration and power density of electronic devices, and their widespread application in advanced technologies such as aerospace, marine electronics, and military equipment, heat dissipation materials adapted to complex spatial structures have attracted increasing attention. Flexible thermal conductive materials based on graphite, possessing both thermal conductivity and flexibility, are better suited to the development of electronic devices and thus have broad market prospects.

[0003] As products become increasingly integrated, the power-to-volume ratio of electronic devices is growing, requiring them to dissipate heat within a smaller space. This presents a significant challenge for heat dissipation materials. When heat dissipation and heat release are out of balance, heat can accumulate inside the device, leading to malfunctions or even serious accidents such as explosions and fires.

[0004] Currently, there are two main methods for heat dissipation of heat-generating devices: air cooling and liquid cooling. Air cooling devices have the disadvantage of high energy consumption, while liquid cooling devices are not suitable for heat dissipation of heat-generating devices in small spaces, such as inside electronic chassis. Furthermore, neither air cooling nor liquid cooling devices are suitable when the heat-generating device is in a vibration environment, as vibration can easily cause the heat dissipation device to malfunction.

[0005] Therefore, there is an urgent need for a graphite heat-conducting device and system with higher thermal conductivity that can dissipate heat from equipment under vibration conditions. Utility Model Content

[0006] This invention provides a graphite heat conduction device and heat conduction system to solve the technical problem that conventional heat dissipation equipment in the prior art is not suitable for dissipating heat from vibrating heat-generating equipment.

[0007] This utility model is achieved through the following technical solution: a graphite heat conduction device, including a heat source end connector, a cooling end connector, and a flexible heat conduction component, wherein the flexible heat conduction component is a structural component formed by stacking multiple layers of flexible graphite strips, and the heat source end connector and the cooling end connector are respectively fixed at both ends of the flexible heat conduction component.

[0008] To better realize this utility model, further optimizations are made to the above structure. Both the heat source end connector and the cooling end connector are metal shells. The metal shell includes a first connecting plate and a second connecting plate. One end of the first connecting plate is rotatably connected to one end of the second connecting plate. A cavity is provided between the first connecting plate and the second connecting plate. An opening is formed at the other end of the first connecting plate and the other end of the second connecting plate. One end of the flexible heat-conducting component extends into the metal shell through the opening.

[0009] To better realize this utility model, further optimization is made to the above structure. The first connecting plate is provided with a protruding post on the side facing the second connecting plate, and all the flexible graphite strips are provided with insertion holes corresponding to the positions of the protruding posts. The flexible heat-conducting component is sleeved on the protruding post through the insertion holes.

[0010] To better realize this utility model, further optimizations are made to the above structure. The metal shell is provided with a mounting position, and the mounting position is provided with fasteners or magnetic components for connecting the heating device or the heat dissipation device.

[0011] To better realize this utility model, further optimizations are made to the above structure, wherein the metal shell is filled with a thermally conductive interface material and the outer surface of the metal shell is provided with a thermally conductive coating.

[0012] A heat conduction system includes a heating device, a heat dissipation device, and a graphite heat conduction device. The heat source end connector of the graphite heat conduction device is installed on the heating device, and the cooling end connector of the heat source end connector is installed on the heat dissipation device. The heat source end connector absorbs heat from the heating device and conducts it to the cooling end connector through a flexible heat conduction component, so that the heat is dissipated through the heat dissipation device.

[0013] To better realize this utility model, the above structure is further optimized by including a device mounting platform, on which the heating device is mounted, and a shock-absorbing device is provided at the bottom of the device mounting platform.

[0014] To better realize this utility model, further optimizations are made to the above structure. The heat dissipation device is installed on the side of the device mounting platform, the heat source end connector is spatially perpendicular to the cooling end connector, and the flexible heat-conducting component is bent at 90° and connected between the heat source end connector and the cooling end connector.

[0015] To better realize this utility model, further optimizations are made to the above structure. The heat dissipation device is installed below the device mounting platform, the heat source end connector is parallel to the cooling end connector in space, and the flexible heat-conducting component is connected in a U-shape between the heat source end connector and the cooling end connector.

[0016] To better realize this utility model, the above structure is further optimized, and the heat dissipation device is an air-cooled device or a liquid-cooled device.

[0017] Compared with the prior art, this utility model has the following advantages:

[0018] The graphite heat conduction device provided by this utility model includes a heat source end connector, a cooling end connector, and a flexible heat conduction component. The flexible heat conduction component is a structural component made of multiple layers of flexible graphite strips. The heat source end connector and the cooling end connector are respectively fixed at both ends of the flexible heat conduction component. With this structure, the heat source end connector is installed on the heat-generating equipment to absorb heat energy, and the cooling end connector is installed on the heat-dissipating equipment to dissipate heat energy. Heat is conducted through the flexible heat conduction component composed of multiple layers of flexible graphite strips. It is flexible, bendable, simple in structure, consumes zero energy, occupies little space, and is easy to install. Therefore, it is more suitable for the heat dissipation needs of equipment in confined spaces and under vibration conditions, and makes up for the shortcomings of air-cooled and liquid-cooled equipment.

[0019] This utility model also provides a heat conduction system including a heating device, a heat dissipation device, and a graphite heat conduction device. The heat source end connector of the graphite heat conduction device is installed on the heating device, and the cooling end connector of the heat source end connector is installed on the heat dissipation device. The heat source end connector absorbs the heat from the heating device and conducts it to the cooling end connector through the flexible heat conduction component, so that the heat is dissipated through the heat dissipation device. The heat energy is conducted through the flexible heat conduction component, which is suitable for quickly conducting the heat of the device in a confined space without additional energy consumption. The flexible structure allows for flexible installation, can buffer, is not affected by vibration, and has wider applicability. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the graphite heat-conducting device in this utility model;

[0022] Figure 2 This is a top view of the graphite heat-conducting device in this utility model;

[0023] Figure 3 This is a schematic diagram of the heat conduction system in this utility model;

[0024] Figure 4 This is a schematic diagram of another embodiment of the heat conduction system in this utility model;

[0025] Figure 5 This is a schematic diagram showing the connection between the flexible thermal conductive component and the metal casing.

[0026] Figure 6 This is a cross-sectional view of a flexible thermal conductive component.

[0027] In the picture:

[0028] 1-Heat source end connector; 2-Flexible heat-conducting component; 3-Cooling end connector; 4-First connecting plate; 5-Heating device; 6-Heat dissipation device; 7-Equipment mounting platform; 8-Shock damping device; 9-Copper foil sheet; 10-Flexible graphite strip; 11-Second connecting plate; 12-Protruding column; 13-Mounting position. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0030] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0032] Example 1:

[0033] In this embodiment, a graphite heat-conducting device, such as... Figure 1 , Figure 2 , Figure 5 and Figure 6 As shown, it includes a heat source end connector 1, a cooling end connector 3, and a flexible heat-conducting component 2. Specifically, the flexible heat-conducting component 2 is a structural component made of multiple layers of flexible graphite strips 10. The heat source end connector 1 and the cooling end connector 3 are respectively fixed at both ends of the flexible heat-conducting component 2. The heat source end connector 1 is used to absorb the heat of the heating device 5. The flexible graphite strips 10 are flexible and have good thermal conductivity, quickly conducting the heat absorbed by the heat source end connector 1 to the cooling end connector 3. The cooling end connector 3 is used to dissipate the heat.

[0034] With this structure, the heat source end connector 1 is installed on the heat-generating device 5 to absorb heat energy, and the cooling end connector 3 is installed on the heat dissipation device 6 to dissipate heat energy. Heat is conducted through the flexible heat-conducting component 2 composed of multiple flexible graphite strips 10. The structure is flexible, bendable, simple, energy-efficient, space-saving, and easy to install, making it more suitable for the heat dissipation needs of equipment in confined spaces and under vibration conditions, thus making up for the shortcomings of air-cooled and liquid-cooled equipment.

[0035] In this embodiment, the above-mentioned flexible graphite strip 10 is a graphite strip obtained by sintering a PI film, and has the structural characteristics of high crystallinity, consistent layer orientation, and thin thickness. It can be bent in the direction parallel to the layers. In addition, the above-mentioned flexible graphite strip 10 can also be a flexible graphite strip 10 made by adding a flexible adhesive to graphite. The flexible adhesive can be silicone rubber, polyurethane, or thermoplastic elastomer.

[0036] As one specific implementation method of this embodiment, such as Figure 5 As shown, both the heat source end connector 1 and the cooling end connector 3 are metal shells, preferably made of common metal materials such as copper, aluminum, and steel. The metal shells have a flat structure so that they can be attached to the heating device 5 over a large area. Specifically, the metal shells include a first connecting plate 4 and a second connecting plate 11. One end of the first connecting plate 4 and one end of the second connecting plate 11 are rotatably connected by a hinge. A cavity is provided between the first connecting plate 4 and the second connecting plate 11. An opening is formed at the other end of the first connecting plate 4 and the other end of the second connecting plate 11. One end of the flexible heat-conducting component 2 extends into the metal shell through the opening. The metal shell constrains the flexible heat-conducting component 2 in the horizontal and vertical directions to prevent the multi-layer flexible graphite strips 10 from spreading out. It is worth noting that the multi-layer flexible graphite strips 10 of the flexible heat-conducting component 2 do not need to be bonded or fixed; they can be stacked by longitudinal pressure alone.

[0037] As an optimization, such as Figure 5As shown, the first connecting plate 4 has a protruding post 12 on the side facing the second connecting plate 11. All the flexible graphite strips 10 have insertion holes at positions corresponding to the protruding post 12. The flexible heat-conducting component 2 is sleeved on the protruding post 12 through the insertion holes. The protruding post 12 is used to constrain and fix the two ends of the flexible heat-conducting component 2, so that all the flexible graphite strips 10 can be fully extended. Even if the flexible heat-conducting component 2 is bent during use, it will not cause the flexible graphite strips 10 to wrinkle or shrink, so that the flexible heat-conducting component 2 can maintain good thermal conductivity.

[0038] In this embodiment, as Figure 5 As shown, the metal housing is provided with a mounting position 13, which can be a mounting groove or a mounting hole. The mounting position 13 is provided with fasteners or magnetic components for connecting the heating device 5 or the cooling device 6, so as to fix the heat source end connector 1 and the cooling end connector 3 to the heating device 5 and the cooling device 6 respectively, so that the metal housing fully fits the heating device 5 or the cooling device 6, so as to quickly absorb heat or release heat outward. Magnetic components are preferred, which can achieve non-destructive fixing without damaging the structure of the heating device 5 and the cooling device 6.

[0039] In this embodiment, the metal shell is filled with a thermally conductive interface material. The thermally conductive interface material has the function of reducing thermal resistance and improving heat conduction efficiency. By filling the interface gaps and reducing contact thermal resistance, the heat dissipation efficiency is improved, and it can also fix the two ends of the flexible thermally conductive component 2, further preventing the flexible thermally conductive component 2 from falling off the metal shell.

[0040] Furthermore, the outer surface of the aforementioned metal casing is provided with a thermally conductive coating to improve the thermal conductivity between the metal casing and the heat-generating device 5 or the heat-dissipating device 6. The aforementioned thermally conductive interface material and thermally conductive coating are preferably thermally conductive grease, thermally conductive silicone, or thermally conductive gel.

[0041] As another optimized implementation of this embodiment, such as Figure 6 As shown, it also includes copper foil 9. The upper and lower surfaces of the flexible heat-conducting component 2 are provided with the copper foil 9, that is, multiple layers of flexible graphite strips 10 are stacked between two copper foil 9. By setting the copper foil 9, the durability of the flexible heat-conducting component 2 is improved without affecting the flexibility of the flexible heat-conducting component 2, the flexible graphite strips 10 are protected, and the service life is extended. In this embodiment, the two ends of the copper foil 9 are provided with through holes corresponding to the positions of the insertion holes, so that the copper foil 9 can also be fixed on the protrusions on the first connecting plate and the second connecting plate.

[0042] The heat source end connector 1 and cooling end connector 3 of the above-mentioned graphite heat conduction device are directly attached to the heat-generating device 5 and the heat dissipation device 6, and are connected by the above-mentioned flexible heat conduction component 2. It occupies little space and is suitable for setting in a narrow space to achieve the purpose of heat dissipation. The above-mentioned flexible heat conduction component 2 is flexible and can be cushioned, making it suitable for heat-generating devices 5 that are subject to vibration, and will not cause structural damage due to vibration.

[0043] Example 2:

[0044] In this embodiment, a heat conduction system, such as... Figure 3 As shown, the device includes a heat-generating device 5, a heat-dissipating device 6, and a graphite heat-conducting device. The heat source end connector 1 of the graphite heat-conducting device is installed on the heat-generating device 5, and the cooling end connector 3 of the heat source end connector 1 is installed on the heat-dissipating device 6. The heat source end connector 1 absorbs the heat from the heat-generating device 5 and conducts it to the cooling end connector 3 through the flexible heat-conducting component 2, allowing the heat to dissipate through the heat-dissipating device 6. The flexible heat-conducting component 2 conducts heat energy, making it suitable for quickly conducting heat in confined spaces without additional energy consumption. The flexible structure allows for flexible installation, provides cushioning, and is unaffected by vibration. It is applicable to heat dissipation of heat-generating devices in fields such as flight equipment, ground equipment, vehicle-mounted equipment, and industrial control equipment, and has a wider range of applications.

[0045] In this embodiment, the heat conduction system is set inside a box with an outer wall, such as an electronic chassis. The heat-generating device 5 is set inside the box, and the heat dissipation device 6 is set outside the box. The heat inside is transferred to the outside through the graphite heat conduction device. The heat dissipation device 6 can be an air-cooled device or a liquid-cooled device, such as an air conditioner with heat dissipation fins or a liquid-cooled device with heat dissipation fins for heat dissipation.

[0046] Furthermore, such as Figure 3 As shown, it also includes an equipment mounting platform 7, on which the heating device 5 is mounted. The bottom of the equipment mounting platform 7 is provided with a shock-absorbing device 8, which is a spring bracket used to cooperate with equipment that requires vibration.

[0047] In this embodiment, as Figure 3 As shown, the heat dissipation device 6 is installed on the side of the device mounting platform 7, that is, on the side outside the box. The heat source end connector 1 is perpendicular to the cooling end connector 3 in space. At this time, the flexible heat conduction component 2 is bent at 90° and connected between the heat source end connector 1 and the cooling end connector 3, which is suitable for places where heat dissipation to the side is required.

[0048] In this embodiment, as Figure 4As shown, the heat dissipation device 6 can also be installed below the device mounting platform 7, that is, on the bottom side of the box. The heat source end connector 1 is parallel to the cooling end connector 3 in space. The flexible heat conduction component 2 is connected in a U-shape between the heat source end connector 1 and the cooling end connector 3, which is suitable for places where heat dissipation to the bottom is required.

[0049] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A graphite heat-conducting device, characterized in that: It includes a heat source end connector (1), a cooling end connector (3) and a flexible heat-conducting component (2). The flexible heat-conducting component (2) is a structural component made of multiple layers of flexible graphite strips (10). The heat source end connector (1) and the cooling end connector (3) are respectively fixed at both ends of the flexible heat-conducting component (2).

2. The graphite heat-conducting device according to claim 1, characterized in that: The heat source end connector (1) and the cooling end connector (3) are both metal shells. The metal shell includes a first connecting plate (4) and a second connecting plate (11). One end of the first connecting plate (4) is rotatably connected to one end of the second connecting plate (11). A cavity is provided between the first connecting plate (4) and the second connecting plate (11). An opening is formed between the other end of the first connecting plate (4) and the other end of the second connecting plate (11). One end of the flexible heat-conducting component (2) extends into the metal shell through the opening.

3. The graphite heat-conducting device according to claim 2, characterized in that: The first connecting plate (4) has a protruding post (12) on the side facing the second connecting plate (11). All the flexible graphite strips (10) have insertion holes at the positions corresponding to the protruding post (12). The flexible heat-conducting component (2) is sleeved on the protruding post (12) through the insertion holes.

4. The graphite heat-conducting device according to claim 2, characterized in that: The metal housing is provided with a mounting position (13), and the mounting position (13) is provided with fasteners or magnetic attachments for connecting the heating device (5) or the heat dissipation device (6).

5. A graphite heat-conducting device according to claim 2, characterized in that: The metal casing is filled with a thermally conductive interface material, and the outer surface of the metal casing is provided with a thermally conductive coating.

6. A heat conduction system, characterized in that: The device includes a heating device (5), a heat dissipation device (6), and a graphite heat-conducting device as described in any one of claims 1-5. The heat source end connector (1) of the graphite heat-conducting device is installed on the heating device (5), and the cooling end connector (3) of the heat source end connector (1) is installed on the heat dissipation device (6). The heat source end connector (1) absorbs the heat from the heating device (5) and conducts it to the cooling end connector (3) through the flexible heat-conducting component (2), so that the heat is dissipated through the heat dissipation device (6).

7. A heat conduction system according to claim 6, characterized in that: It also includes an equipment mounting platform (7), on which the heating device (5) is mounted, and a shock-absorbing device (8) is provided at the bottom of the equipment mounting platform (7).

8. A heat conduction system according to claim 7, characterized in that: The heat dissipation device (6) is installed on the side of the device mounting platform (7), the heat source end connector (1) is spatially perpendicular to the cooling end connector (3), and the flexible heat conduction component (2) is bent at 90° between the heat source end connector (1) and the cooling end connector (3).

9. A heat conduction system according to claim 7, characterized in that: The heat dissipation device (6) is installed below the device mounting platform (7), the heat source end connector (1) is parallel to the cooling end connector (3) in space, and the flexible heat conduction component (2) is connected in a U-shape between the heat source end connector (1) and the cooling end connector (3).

10. A heat conduction system according to claim 6, characterized in that: The heat dissipation device (6) is an air-cooled device or a liquid-cooled device.

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