Long-distance flexible heat conduction cable and heat management equipment

Abstract

The invention discloses a long-distance flexible heat-conducting cable and heat management equipment, and relates to the technical field of heat management. The long-distance flexible heat-conducting cable comprises a first heat-conducting piece, a second heat-conducting piece, a first heat pipe and a flexible structure, the flexible structure comprises a high-thermal-conductivity connecting piece and a first protective layer arranged on the outer surface of the high-thermal-conductivity connecting piece; the high-thermal-conductivity connecting piece comprises multiple layers of graphene films which are stacked in sequence. The first protection layer has a heat insulation effect; one end of the high heat conduction connecting piece extends into the first heat conduction piece and is fixedly connected with the first heat conduction piece; the other end of the high heat conduction connecting piece extends into the second heat conduction piece and is fixedly connected with the second heat conduction piece; the first heat pipe is fixedly connected with the first heat conduction piece. The thermal management device includes a long-distance flexible thermally conductive cord. The invention aims to provide the long-distance flexible heat-conducting cable and the heat management equipment so as to solve the technical problem that the heat-conducting cable in the prior art is difficult to apply to equipment far away from a hot end to a certain extent.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat management, in particular to a long-distance flexible heat-conducting cable and a heat management device. BACKGROUND

[0002] The heat-conducting cable, also known as a flexible heat-conducting band, is a flexible high-heat-conducting connecting component, which is mainly used for efficiently transferring heat between a hot end and a cold end that can move relative to each other, and has high heat conductivity and structural flexibility, and is widely used in aerospace, data centers, low-temperature equipment and other scenarios.

[0003] The current heat-conducting cable is suitable for devices with a short distance to the hot end, and it is difficult to apply the heat-conducting cable to devices with a long distance to the hot end. SUMMARY

[0004] The purpose of the present application is to provide a long-distance flexible heat-conducting cable and a heat management device to solve the technical problem that the heat-conducting cable is difficult to be applied to devices with a long distance to the hot end in the prior art to some extent.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions: A long-distance flexible heat-conducting cable, comprising a first heat-conducting member, a second heat-conducting member, a first heat pipe and a flexible structure. The flexible structure comprises a high-heat-conducting connecting member and a first protective layer arranged on the outer surface of the high-heat-conducting connecting member; the high-heat-conducting connecting member comprises a plurality of layers of graphene films stacked in sequence; and the first protective layer has a heat insulation effect. One end of the high-heat-conducting connecting member extends into the first heat-conducting member and is fixedly connected with the first heat-conducting member; the other end of the high-heat-conducting connecting member extends into the second heat-conducting member and is fixedly connected with the second heat-conducting member. The first heat pipe is fixedly connected with the first heat-conducting member.

[0006] In any of the above technical solutions, the long-distance flexible heat-conducting cable further comprises a second heat pipe; and the second heat pipe is fixedly connected with the second heat-conducting member.

[0007] In any of the above technical solutions, the first heat pipe is connected in a groove of the first heat-conducting member, and the surface of the first heat pipe is flush with the surface of the first heat-conducting member. The second heat pipe is connected in a groove of the second heat-conducting member, and the surface of the second heat pipe is flush with the surface of the second heat-conducting member.

[0008] In any of the above technical solutions, the first heat pipe is welded on the surface or inside of the first heat-conducting member. The second heat pipe is welded on the surface or inside of the second heat-conducting member.

[0009] In any of the above technical solutions, the first heat pipe may optionally be L-shaped, U-shaped, or an irregular shape; The second heat pipe is L-shaped, U-shaped, spiral-shaped, or irregular in shape.

[0010] Optionally, in any of the above technical solutions, the flexible structure further includes a second protective layer; the second protective layer is a high thermal conductivity metal layer; The second protective layer covers the portion of the high thermal conductivity connector located within the first thermal conductivity component, and / or the second protective layer covers the portion of the high thermal conductivity connector located within the second thermal conductivity component.

[0011] Optionally, in any of the above technical solutions, the second protective layer includes a copper layer, a copper alloy layer, or an aluminum alloy layer.

[0012] In any of the above technical solutions, optionally, the number of graphene films stacked, the volume of the high thermal conductivity connector in the first thermal conductivity component, and the volume of the high thermal conductivity connector in the second thermal conductivity component are determined based on the design heat consumption of the long-distance flexible heat-conducting cable.

[0013] In any of the above technical solutions, optionally, the first heat-conducting component and / or the second heat-conducting component are fixedly connected to the high thermal conductivity connector by welding. The first heat-conducting component and / or the second heat-conducting component are made of copper, copper alloy or aluminum alloy; The first protective layer comprises a polyimide film.

[0014] A thermal management device includes the aforementioned long-distance flexible heat-conducting cable, and also includes a radiator and multiple components to be cooled; The first heat pipe of the long-distance flexible heat-conducting cable is attached to multiple of the heat-dissipating components, and the second heat-conducting component of the long-distance flexible heat-conducting cable is attached to the heat sink.

[0015] The main beneficial effects of this invention are: The present invention provides a long-distance flexible heat-conducting cable and thermal management device, comprising a first heat-conducting element, a second heat-conducting element, a first heat pipe, and a flexible structure. The flexible structure includes a high thermal conductivity connector and a first protective layer disposed on the outer surface of the high thermal conductivity connector. The high thermal conductivity connector includes multiple layers of graphene film stacked sequentially, and the first protective layer has a heat insulation effect. Through the multiple layers of graphene film and the first protective layer, the flexibility and high thermal conductivity of the flexible structure can be ensured. The high thermal conductivity of the multiple layers of graphene film can be used for heat transfer between the first heat-conducting element and the second heat-conducting element. The first protective layer can improve the strength of the flexible structure and effectively protect the multiple layers of graphene film, effectively preventing the multiple layers of graphene film from breaking. The first heat pipe is fixedly connected to the first heat-conducting element, allowing devices that are far away from the first heat-conducting element to be connected to the first heat pipe, and heat can be transferred to the first heat-conducting element through the first heat pipe.

[0016] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a long-distance flexible heat-conducting cable provided in an embodiment of the present invention; Figure 2 for Figure 1 The front view of the long-distance flexible heat-conducting cable is shown. Figure 3 for Figure 2 The image shows a cross-sectional view along the AA direction of a long-distance flexible heat-conducting cable. Figure 4 for Figure 2 The image shows a BB-direction cross-sectional view of a long-distance flexible heat-conducting cable. Figure 5 for Figure 4 The enlarged view of region C of the long-distance flexible heat-conducting cable is shown.

[0019] Icons: 100 - First heat-conducting component; 200 - Second heat-conducting component; 300 - First heat pipe; 400 - Second heat pipe; 500 - Flexible structure; 510 - High thermal conductivity connector; 520 - First protective layer; 530 - Second protective layer. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention 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 invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0025] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Current heat-conducting cables are suitable for devices that are close to the hot end, but difficult to apply to devices that are far from the hot end. The long-distance flexible heat-conducting cable and thermal management device provided in this embodiment can be used for devices with far-distance hot ends by welding the heat pipe to the hot end (i.e., the first heat-conducting element). Furthermore, when there are multiple heat source devices, heat can be transferred through the heat pipe to the cold end for cooling.

[0027] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0028] The long-distance flexible heat-conducting cable provided in this embodiment can be used for long-distance heat conduction, such as in devices located far from the hot end. See also Figures 1-5 As shown, the long-distance flexible heat-conducting cable includes a first heat-conducting element 100, a second heat-conducting element 200, a first heat pipe 300, and a flexible structure 500.

[0029] The flexible structure 500 includes a high thermal conductivity connector 510 and a first protective layer 520 disposed on the outer surface of the high thermal conductivity connector 510. The high thermal conductivity connector 510 includes multiple layers of graphene film stacked sequentially. The first protective layer 520 has a thermal insulation effect. For example, the first protective layer 520 wraps around the outer surface of the high thermal conductivity connector 510 to protect it, effectively reducing the possibility of breakage of the sequentially stacked multiple layers of graphene film. In this embodiment, the multiple layers of graphene film serve as the main heat-conducting component. Utilizing the high thermal conductivity of the graphene film, the axial heat conduction capability along the graphene film is improved. The thermal insulation effect of the first protective layer 520 improves the temperature uniformity of the inner surface of the multiple layers of graphene film. For example, the thermal conductivity of the graphene film is ≥1600W / (m•K). The thickness of the graphene film is, for example, 0.05mm, and the number of layers is, for example, several tens of layers, such as 40-80 layers.

[0030] One end of the high thermal conductivity connector 510 extends into the first thermal conductive element 100 and is fixedly connected to the first thermal conductive element 100; the other end of the high thermal conductivity connector 510 extends into the second thermal conductive element 200 and is fixedly connected to the second thermal conductive element 200.

[0031] The first heat pipe 300 is fixedly connected to the first heat-conducting element 100. The first heat-conducting element 100, which is fixedly connected to the first heat pipe 300 and the high thermal conductivity connector 510, provides good support for both the first heat pipe 300 and the high thermal conductivity connector 510, and also transfers heat between the first heat pipe 300 and the first heat-conducting element 100. The first heat pipe 300 allows connection to devices located at greater distances, facilitating the transfer of heat from these devices to the first heat-conducting element 100.

[0032] The long-distance flexible heat-conducting cable described in this embodiment includes a first heat-conducting element 100, a second heat-conducting element 200, a first heat pipe 300, and a flexible structure 500. The flexible structure 500 includes a high thermal conductivity connector 510 and a first protective layer 520 disposed on the outer surface of the high thermal conductivity connector 510. The high thermal conductivity connector 510 includes multiple layers of graphene film stacked sequentially, and the first protective layer 520 has a heat insulation effect. Through the multiple layers of graphene film and the first protective layer 520, the flexibility and high thermal conductivity of the flexible structure 500 can be guaranteed. The high thermal conductivity of the multilayer graphene film can be used to transfer heat between the first heat-conducting element 100 and the second heat-conducting element 200. The first protective layer 520 can improve the strength of the flexible structure 500 and effectively protect the multilayer graphene film, thus preventing the multilayer graphene film from breaking. The first heat pipe 300 is fixedly connected to the first heat-conducting element 100, so that devices that are far away from the first heat-conducting element 100 can be connected to the first heat pipe 300 and heat can be transferred to the first heat-conducting element 100 through the first heat pipe 300.

[0033] See Figures 1-5 As shown, in an optional embodiment, the long-distance flexible heat-conducting cable further includes a second heat pipe 400; the second heat pipe 400 is fixedly connected to the second heat-conducting element 200. By fixing the second heat pipe 400 to the second heat-conducting element 200, devices located far from the second heat-conducting element 200 can be connected to the second heat pipe 400, allowing heat from the second heat-conducting element 200 to be transferred to the device for heat dissipation through the second heat pipe 400.

[0034] Current heat-conducting cables are suitable for devices with relatively close proximity to the hot and cold ends, but difficult to apply to devices with greater distances. The long-distance flexible heat-conducting cable and thermal management device provided in this embodiment, by connecting a first heat pipe 300 to a first heat-conducting element 100 (i.e., the hot end) and a second heat pipe 400 to a second heat-conducting element 200 (i.e., the cold end), can be suitable for devices with a large distance between their hot and cold ends. When multiple heat source devices are present, heat can be transferred through the first heat pipe 300, sequentially passing through the first heat-conducting element 100, the multilayer graphene film of the flexible structure 500, the second heat-conducting element 200, and the second heat pipe 400, and then transferred to the heat dissipation device for cooling.

[0035] The long-distance flexible heat-conducting cable described in this embodiment is a flexible composite ultra-long high heat-conducting cable. It can be used in devices with a long distance between the two ends, and can also be used in devices with multiple heat sources to conduct heat to the cold end through heat pipe connection.

[0036] See Figures 1-5As shown, in an optional embodiment, the first heat pipe 300 is connected to the groove of the first heat conductor 100, and the surface of the first heat pipe 300 is flush with the surface of the first heat conductor 100. Connecting the first heat pipe 300 to the groove of the first heat conductor 100 facilitates the secure connection of the first heat pipe 300 to the first heat conductor 100. The flushness between the surface of the first heat pipe 300 and the surface of the first heat conductor 100 facilitates the contact of the surface of the first heat pipe 300 with the heat source.

[0037] See Figures 1-5 As shown, in an optional embodiment, the second heat pipe 400 is connected within the groove of the second heat-conducting element 200, and the surface of the second heat pipe 400 is flush with the surface of the second heat-conducting element 200. Connecting the second heat pipe 400 within the groove of the second heat-conducting element 200 facilitates a secure connection of the second heat pipe 400 to the second heat-conducting element 200; and the flush surface of the second heat pipe 400 with the surface of the second heat-conducting element 200 facilitates the contact of the surface of the second heat pipe 400 with the heat dissipation device.

[0038] In an optional embodiment, the first heat pipe 300 is welded to the surface or inside the first heat-conducting component 100; alternatively, the first heat pipe 300 is connected to the first heat-conducting component 100 by low-temperature welding.

[0039] In an optional embodiment, the second heat pipe 400 is welded to the surface or interior of the second heat-conducting component 200. Optionally, the second heat pipe 400 is connected to the second heat-conducting component 200 using a low-temperature welding method.

[0040] In the optional embodiments of this example, the first heat pipe 300 is L-shaped, U-shaped, or an irregular shape, or other shapes.

[0041] In the optional embodiments of this invention, the second heat pipe 400 is L-shaped, U-shaped, spiral-shaped, or an irregular shape, or other shapes.

[0042] See Figure 5 As shown, in the optional embodiment, the flexible structure 500 further includes a second protective layer 530; the second protective layer 530 is a high thermal conductivity metal layer.

[0043] The second protective layer 530 encloses the portion of the high thermal conductivity connector 510 located within the first thermal conductive element 100, and / or, the second protective layer 530 encloses the portion of the high thermal conductivity connector 510 located within the second thermal conductive element 200. By enclosing the portion of the high thermal conductivity connector 510 within the first thermal conductive element 100 and the portion within the second thermal conductive element 200 with the second protective layer 530, the high thermal conductivity connector 510 can be effectively protected, and the phenomenon of breakage of the sequentially stacked multilayer graphene films can be effectively reduced. The second protective layer 530 is made of a high thermal conductivity metal layer, which is beneficial for heat transfer between the high thermal conductivity connector 510 and the first thermal conductive element 100 / second thermal conductive element 200.

[0044] It should be noted that the portion of the high thermal conductivity connector 510 located within the first thermally conductive element 100 cannot utilize the first protective layer 520 with thermal insulation properties; the first protective layer 520 is detrimental to heat transfer between the high thermal conductivity connector 510 and the first thermally conductive element 100. Similarly, the portion of the high thermal conductivity connector 510 located within the second thermally conductive element 200 cannot utilize the first protective layer 520 with thermal insulation properties; the first protective layer 520 is detrimental to heat transfer between the high thermal conductivity connector 510 and the second thermally conductive element 200.

[0045] In an optional embodiment, the second protective layer 530 may include a copper layer, a copper alloy layer, or an aluminum alloy layer, or other high thermal conductivity alloy foil.

[0046] In the optional scheme of this embodiment, the number of graphene films stacked, the volume of the high thermal conductivity connector 510 in the first thermal conductivity component 100 and the volume of the high thermal conductivity connector 510 in the second thermal conductivity component 200 are determined based on the design heat consumption of the long-distance flexible heat-conducting cable.

[0047] In an optional embodiment, the first heat-conducting component 100 and / or the second heat-conducting component 200 are fixedly connected to the high thermal conductivity connector 510 by welding.

[0048] In an optional embodiment, the first heat-conducting element 100 and / or the second heat-conducting element 200 are made of high-strength metal. For example, the first heat-conducting element 100 and / or the second heat-conducting element 200 are made of copper, copper alloy, or aluminum alloy, or other materials. By using copper, copper alloy, or aluminum alloy for the first heat-conducting element 100 and / or the second heat-conducting element 200, the strength of the first heat-conducting element 100 and the second heat-conducting element can be improved, facilitating connection with power heat sources and heat sinks.

[0049] In an optional embodiment, the first protective layer 520 includes a polyimide film or a film structure of other materials. The polyimide film has extremely high thermal stability and excellent mechanical properties, which can effectively protect the high thermal conductivity connector 510.

[0050] This embodiment also provides a thermal management device, including the long-distance flexible heat-conducting cable described in any of the above embodiments, and also including a heat sink and multiple components to be cooled.

[0051] The first heat pipe 300 of the long-distance flexible heat-conducting cable is attached to multiple components to be cooled, and the second heat-conducting element 200 of the long-distance flexible heat-conducting cable is attached to a heat sink. Heat from the multiple components is conducted to the long-distance flexible heat-conducting cable through the first heat pipe 300, and then to the heat sink through the second heat-conducting element 200 for heat dissipation. Optionally, a second heat pipe 400 is connected to the second heat-conducting element 200, allowing for effective heat dissipation by connecting to a heat sink.

[0052] The thermal management device described in this embodiment, through a multilayer graphene film of a long-distance flexible heat-conducting cable and a first protective layer 520, can ensure the flexibility and high thermal conductivity of the flexible structure 500. The high thermal conductivity of the multilayer graphene film can be used for heat transfer between the first heat-conducting element 100 and the second heat-conducting element 200. The first protective layer 520 can improve the strength of the flexible structure 500 and effectively protect the multilayer graphene film, effectively preventing the multilayer graphene film from breaking. The first heat pipe 300 is fixedly connected to the first heat-conducting element 100, allowing devices that are far away from the first heat-conducting element 100 to be connected to the first heat pipe 300, and heat can be transferred to the first heat-conducting element 100 through the first heat pipe 300.

[0053] The thermal management device provided in this embodiment includes the aforementioned long-distance flexible heat-conducting cable. The technical features of the disclosed long-distance flexible heat-conducting cable are also applicable to this thermal management device, and the technical features of the disclosed long-distance flexible heat-conducting cable will not be described again. The thermal management device in this embodiment has the advantages of the aforementioned long-distance flexible heat-conducting cable, and the advantages of the disclosed long-distance flexible heat-conducting cable will not be described again here.

[0054] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A long-distance flexible heat-conducting cable, characterized in that, It includes a first heat-conducting component, a second heat-conducting component, a first heat pipe, and a flexible structure; The flexible structure includes a high thermal conductivity connector and a first protective layer disposed on the outer surface of the high thermal conductivity connector; the high thermal conductivity connector includes multiple layers of graphene film stacked sequentially; the first protective layer has a heat insulation effect; One end of the high thermal conductivity connector extends into the first thermal conductivity component and is fixedly connected to the first thermal conductivity component; the other end of the high thermal conductivity connector extends into the second thermal conductivity component and is fixedly connected to the second thermal conductivity component. The first heat pipe is fixedly connected to the first heat-conducting component.

2. The long-distance flexible heat-conducting cable according to claim 1, characterized in that, It also includes a second heat pipe; the second heat pipe is fixedly connected to the second heat-conducting component.

3. The long-distance flexible heat-conducting cable according to claim 2, characterized in that, The first heat pipe is connected in the groove of the first heat-conducting component, and the surface of the first heat pipe is flush with the surface of the first heat-conducting component. The second heat pipe is connected in the groove of the second heat-conducting component, and the surface of the second heat pipe is flush with the surface of the second heat-conducting component.

4. The long-distance flexible heat-conducting cable according to claim 2, characterized in that, The first heat pipe is welded to the surface or inside the first heat-conducting component; The second heat pipe is welded to the surface or inside of the second heat-conducting component.

5. The long-distance flexible heat-conducting cable according to claim 2, characterized in that, The first heat pipe is L-shaped, U-shaped, or an irregular shape; The second heat pipe is L-shaped, U-shaped, spiral-shaped, or irregular in shape.

6. The long-distance flexible heat-conducting cable according to claim 1, characterized in that, The flexible structure further includes a second protective layer; the second protective layer is a high thermal conductivity metal layer. The second protective layer covers the portion of the high thermal conductivity connector located within the first thermal conductivity component, and / or the second protective layer covers the portion of the high thermal conductivity connector located within the second thermal conductivity component.

7. The long-distance flexible heat-conducting cable according to claim 6, characterized in that, The second protective layer includes a copper layer, a copper alloy layer, or an aluminum alloy layer.

8. The long-distance flexible heat-conducting cable according to claim 1, characterized in that, Based on the design heat dissipation of the long-distance flexible heat-conducting cable, the number of graphene films stacked, the volume of the high thermal conductivity connector within the first heat-conducting component, and the volume of the high thermal conductivity connector within the second heat-conducting component are determined.

9. The long-distance flexible heat-conducting cable according to claim 1, characterized in that, The first thermally conductive component and / or the second thermally conductive component are fixedly connected to the high thermal conductivity connector by welding. The first heat-conducting component and / or the second heat-conducting component are made of copper, copper alloy or aluminum alloy; The first protective layer comprises a polyimide film.

10. A thermal management device, characterized in that, The system includes the long-distance flexible heat-conducting cable as described in any one of claims 1-9, and also includes a heat sink and a plurality of heat-dissipating components; The first heat pipe of the long-distance flexible heat-conducting cable is attached to multiple of the heat-dissipating components, and the second heat-conducting component of the long-distance flexible heat-conducting cable is attached to the heat sink.

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