Heat dissipation cable

Abstract

The utility model discloses a heat dissipation cable, and relates to the technical field of wires and cables. A heat dissipation cable comprises a heat dissipation section, the heat dissipation section comprises a cable core, a braid layer, an outer sheath and a heat dissipation frame made of a high-heat-conduction metal material, the heat dissipation frame comprises a guide pipe frame and heat dissipation wing plates which are located on a center shaft of the cable, the guide pipe frame is of a hollow tubular structure, and the heat dissipation wing plates are arranged on the peripheral side of the guide pipe frame in a surrounding mode. The cable cores are uniformly arranged between the adjacent heat dissipation wing plates, heat-conducting rubber materials are filled between the cable cores and the heat dissipation wing plates, and the braided layer and the outer sheath sequentially wrap the peripheral side of the heat dissipation frame. By arranging the heat dissipation frame made of the high-heat-conduction metal material in the heat dissipation section, the ring stiffness of the heat dissipation section can be improved, the compression resistance and impact resistance of the heat dissipation cable can be improved, the heat conduction efficiency and the heat dissipation efficiency in the heat dissipation section can be effectively improved, and the heat accumulation effect in the heat dissipation cable can be prevented.

Description

A heat dissipation cable Technical Field

[0001] This utility model relates to the technical field of wires and cables, and in particular to a heat dissipation cable. Background Technology

[0002] Cables are wires used for power, communication, and related transmission purposes. They are essential basic materials for transmitting electrical energy, transmitting information, performing electromagnetic conversion, and manufacturing various motors, electrical appliances, and instruments. Cables are usually made of one or more groups of conductors (each group has at least two conductors) twisted together. Each group of conductors is insulated from each other and is often twisted around a central conductor. The entire cable is covered with a highly insulating outer layer, which gives it the characteristics of being internally energized and externally insulated.

[0003] Because cables generally contain a certain resistance, during power transmission, they experience resistive losses due to the Joule effect. These losses, combined with eddy current losses at high frequencies and dielectric losses in the insulation material, cause the core temperature to rise continuously, resulting in a significant amount of heat generation. This is especially true for bundled cables composed of multiple strands of wire, where all strands heat up simultaneously. If this heat cannot dissipate quickly enough, a heat accumulation effect will occur inside the cable, leading to thermal aging of the insulation layer, deterioration of its mechanical properties, and even inducing partial discharge or insulation breakdown.

[0004] Currently, due to the limitations of traditional cable structures such as insufficient heat dissipation channels and low thermal conductivity of materials, their heat dissipation performance is difficult to meet the needs of power transmission systems with dynamic loads or new energy applications in modern society. Therefore, providing a cable with good heat dissipation is of great significance for power transmission systems in modern society. Summary of the Invention

[0005] In order to improve the heat dissipation performance of the cable and prevent the formation of heat accumulation effect inside the cable, this application provides a heat dissipation cable.

[0006] The heat dissipation cable provided in this application adopts the following technical solution:

[0007] A heat dissipation cable includes a heat dissipation section and a bending section, each comprising a cable core, a braided layer, and an outer sheath arranged sequentially from the inside out.

[0008] The heat dissipation section also includes a heat dissipation frame made of high thermal conductivity metal. The heat dissipation frame includes a conduit frame located on the central axis of the cable. Several sets of heat dissipation wing plates are provided on the outer periphery of the conduit frame. The cable core is evenly arranged between adjacent heat dissipation wing plates. Thermally conductive adhesive is filled between the cable core and the heat dissipation wing plates. The braided layer and the outer sheath are sequentially wrapped around the outer periphery of the heat dissipation frame.

[0009] By adopting the above technical solution, when the cable core heats up, the heat generated by the cable core can be fully conducted to the heat dissipation fins on both sides through the thermally conductive rubber material. Then, it can be conducted and dissipated through the heat dissipation frame made of high thermal conductivity metal material. It can not only be conducted to the conduit frame and dissipated towards the inside of the hollow tube, but also to the end of the heat dissipation fins away from the conduit frame and dissipated towards the outside of the heat dissipation cable. This is beneficial to greatly improve the internal heat conduction efficiency and overall heat dissipation efficiency of the heat dissipation cable, and thus effectively prevent the formation of heat accumulation effect inside the cable.

[0010] Optionally, the bending section further includes a flexible hose frame located on the central axis of the cable. The flexible hose frame is a hollow tubular structure, and the ends of the flexible hose frame are connected to the conduit frame accordingly.

[0011] The cable cores located in the bending section are evenly arranged on the outer periphery of the hose frame, and a filler support block is provided between the cable cores. The braided layer and the outer sheath located in the bending section successively cover the outer periphery of the cable cores and the filler support block, and remain flush with the outer diameter of the heat dissipation section.

[0012] By adopting the above technical solution, the heat generated by the cable core in the bending section can be dissipated towards the inside of the hollow tube structure through the flexible hose frame, which helps to prevent heat accumulation in the bending section of the heat dissipation cable, while ensuring smooth bending.

[0013] Optionally, the heat dissipation fin includes a web and flanges. The web is perpendicular to the duct frame and extends in all directions. The flanges are located at the end of the web away from the duct frame and have an arc-shaped structure and are not connected to each other.

[0014] By adopting the above technical solution, the overall outer edge of the heat dissipation frame is circular, which can not only effectively improve the ring stiffness of the heat dissipation section of the heat dissipation cable and improve the pressure and impact resistance of the heat dissipation cable, but also greatly increase the heat dissipation area of ​​the heat dissipation wing plate away from the duct frame by the arc-shaped flange, which is conducive to improving the heat dissipation efficiency of the heat dissipation frame and allowing heat to be fully dissipated to the outer periphery of the heat dissipation cable through the wing plate.

[0015] Optionally, several heat-conducting fins are provided on both sides of the web.

[0016] By adopting the above technical solution, when the space between the heat dissipation fins and the heat dissipation fins is filled with thermally conductive adhesive, several thermally conductive fins can be fully embedded in the thermally conductive adhesive. Moreover, since the thermally conductive fins are connected to the web, the heat generated by the cable core can be fully conducted to the heat dissipation fins through the thermally conductive fins, which is beneficial to improving the heat dissipation efficiency between the thermally conductive adhesive and the heat dissipation fins.

[0017] Optionally, the heat-conducting fins are wavy and zigzag-shaped.

[0018] By adopting the above technical solution, the contact area between the thermally conductive fins and the thermally conductive adhesive can be further increased, which is conducive to further improving the heat conduction efficiency between the thermally conductive adhesive and the heat dissipation frame.

[0019] Optionally, the interior of the duct frame and the heat dissipation fin are both hollow structures and are interconnected. A cooling water inlet is provided on the inner circumferential side of the duct frame near the end of the heat dissipation section. The cooling water inlet is connected to the internal cavity of the duct frame and is connected to a water inlet cover.

[0020] By adopting the above technical solution, circulating cooling water can be introduced into the internal cavity of the duct frame and heat dissipation fins through the cooling water inlet for water cooling heat dissipation, thereby enabling rapid heat conduction and dissipation of the heat dissipation frame through water flow. Alternatively, if cooling water is not required, the cooling water inlet can be sealed with a cap.

[0021] Optionally, the interior of the hose frame is a hollow structure, and the internal cavity of the hose frame is in communication with the internal cavity of the conduit frame;

[0022] Both ends of the catheter frame are provided with connection terminals. The catheter frame can be connected to the hose frame through the connection terminals, or the frame end cap can be connected through the connection terminals to achieve sealing of the end of the catheter frame.

[0023] By adopting the above technical solution, since the internal cavity of the hose frame is connected to the internal cavity of the conduit frame, when the cable core in the bending section heats up, the heat of the bending section can be dissipated towards the inside of the hollow tube of the hose frame through the cooling water flow in the hose frame, or it can be conducted to the heat dissipation section through the cooling water flow for sufficient heat dissipation.

[0024] Optionally, a hose support is provided on the inner side of the hollow tube of the hose frame.

[0025] By adopting the above technical solution, the hose support can effectively support the hollow tube structure of the hose, which helps to ensure that the hollow tube structure of the bending section is not prone to collapse and improves the overall structural stability of the heat dissipation section of the heat dissipation cable.

[0026] In summary, the technical solution of this application has at least one of the following beneficial effects:

[0027] 1. By setting a heat dissipation frame made of high thermal conductivity metal in the heat dissipation section, not only can the ring stiffness of the heat dissipation section be improved and the pressure and impact resistance of the heat dissipation cable be improved, but the heat conduction efficiency and heat dissipation efficiency in the heat dissipation section can also be greatly improved, and the heat accumulation effect inside the heat dissipation cable can be prevented.

[0028] 2. By setting several sets of heat dissipation fins, the contact area between the heat dissipation frame and the heat dissipation adhesive is greatly increased, which is conducive to improving the heat conduction efficiency between the heat dissipation adhesive and the heat dissipation frame.

[0029] 3. By using water cooling, the heat generated by the cable core can be quickly conducted and dissipated through the water flow, which helps to improve the heat dissipation efficiency of the heat dissipation cable. Attached Figure Description

[0030] Figure 1 is an axial cross-sectional view of a heat dissipation cable according to an embodiment of this application.

[0031] Figure 2 is a cross-sectional view of the heat dissipation section of a heat dissipation cable according to an embodiment of this application.

[0032] Figure 3 is a cross-sectional view of the bending section of a heat dissipation cable in an embodiment of this application.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Heat dissipation section; 11. Conduit frame; 111. Cooling water inlet; 112. Water inlet cover; 12. Heat dissipation fins; 121. Web plate; 122. Flange; 123. Heat dissipation fins; 13. Thermally conductive adhesive; 14. Connecting terminal; 15. Frame end cap; 2. Bending section; 21. Hose frame; 22. Filler support block; 23. Hose support; 3. Cable core; 4. Braided layer; 5. Outer sheath. Detailed Implementation

[0035] The present application will be further described in detail below with reference to Figures 1-3.

[0036] This application discloses a heat dissipation cable. Referring to Figures 1, 2, and 3, a heat dissipation cable includes a heat dissipation section 1 and a bending section 2. The heat dissipation cable mainly achieves sufficient heat dissipation through the heat dissipation section 1 and achieves bending and turning through the bending section 2. The specific positions and proportions of the heat dissipation section 1 and the bending section 2 can be reasonably arranged through pre-calculation and measurement to achieve integrated covering and forming of the heat dissipation cable. Specifically, both the heat dissipation section 1 and the bending section 2 include a cable core 3, a braided layer 4, and an outer sheath 5 arranged sequentially from the inside out. The heat dissipation section 1 also includes a heat dissipation frame, which is specifically made of a metal material with a high thermal conductivity. Thus, the cable core 3 located in the heat dissipation section 1 can achieve sufficient heat dissipation through the metal heat dissipation frame, which helps to prevent the formation of heat accumulation effects inside the cable and reduce various problems caused by poor heat dissipation.

[0037] Referring to Figures 1 and 2, the heat dissipation frame includes a conduit frame 11 and heat dissipation fins 12. The conduit frame 11 is located on the central axis of the heat dissipation section 1 of the heat dissipation cable and has a hollow tubular structure. The heat dissipation fins 12 are arranged around the outer periphery of the conduit frame 11. Specifically, the heat dissipation fins 12 include a web 121 and flanges 122. The web 121 is perpendicular to the conduit frame 11 and extends outwards. The flanges 122 are located at the end of the web 121 away from the conduit frame 11. The flanges 122 have an arc-shaped structure and adjacent flanges 122 are not connected to each other, thus the overall outer edge of the heat dissipation frame is circular. The cable cores 3 located in the heat dissipation section 1 are evenly arranged between adjacent heat dissipation fins 12. Thermally conductive adhesive 13 is also filled between the cable cores 3 and the heat dissipation fins 12. The braided layer 4 and the outer sheath 5 sequentially cover the outer periphery of the flanges 122 of the heat dissipation frame.

[0038] Specifically, in this embodiment, the heat dissipation cable has four sets of cable cores 3, and correspondingly, the heat dissipation frame has four sets of heat dissipation fins 12, arranged in a cross structure with the conduit frame 11 as the axis. The four sets of cable cores 3 are evenly distributed at the intervals between the four sets of heat dissipation fins 12. The thermally conductive adhesive 13 is specifically thermally conductive silicone. When the cable core 3 generates heat, the heat generated can be fully conducted to the heat dissipation fins 12 on both sides through the thermally conductive silicone, and then dissipated towards the inside of the hollow tube through the connected conduit frame 11, or towards the outside of the heat dissipation cable through the connected flanges 122. Furthermore, since the heat dissipation frame is made of a metal material with high thermal conductivity and has a hollow tubular structure, the heat dissipation frame can effectively improve the overall ring stiffness of the heat dissipation section 1, which is beneficial for improving the compressive and impact resistance of the heat dissipation cable.

[0039] Referring to Figures 1 and 2, several sets of heat-conducting fins are also provided on both sides of the web 121. These sets of heat-conducting fins are evenly distributed along the extension direction of the web 121 and extend towards the cable core 3. Thus, when the space between the cable core 3 and the heat dissipation fin 12 is filled with heat-conducting adhesive 13, the sets of heat-conducting fins are fully embedded in the heat-conducting adhesive 13, thereby greatly increasing the heat exchange area between the heat-conducting adhesive 13 and the heat dissipation fin 12 and improving the heat conduction efficiency. Furthermore, the heat-conducting fins are generally wavy, which effectively increases the contact area between the heat-conducting fins and the heat-conducting adhesive 13, which is beneficial to improving the heat conduction efficiency between the heat-conducting adhesive 13 and the heat dissipation frame. In addition, the extension length of the heat-conducting fins does not exceed the length of the flange 122 to prevent interference with the installation of the cable core 3.

[0040] Referring to Figures 1 and 3, the bending section 2 also includes a flexible hose frame 21. The flexible hose frame 21 is located on the central axis of the bending section 2 of the heat dissipation cable and is also a hollow tubular structure. The flexible hose frame 21 and the conduit frame 11 are connected to each other. Specifically, the cable cores 3 located in the bending section 2 are evenly arranged on the outer periphery of the flexible hose frame 21, and filling support blocks 22 are arranged between the cable cores 3. The braided layer 4 and the outer sheath 5 are sequentially wrapped around the outer periphery of the heat dissipation frame, and the bending section 2 remains flush with the outer diameter of the heat dissipation section 1. In this embodiment, the flexible hose frame 21 is specifically made of silicone hose to ensure that the bending section 2 of the heat dissipation cable can be bent smoothly.

[0041] Referring to Figures 1 and 3, in addition to ensuring that the hollow tube structure of the silicone hose does not easily collapse, the bending section 2 also includes a hose support 23. Specifically, the hose support 23 is made of a highly flexible metal material and is arranged in a mesh structure inside the hollow tube of the hose frame 21. In this embodiment, the hose support 23 is made of aluminized steel mesh.

[0042] Referring to Figures 1, 2, and 3, in this embodiment, the heat dissipation section 1 specifically employs water cooling. Specifically, the interiors of the duct frame 11, the heat dissipation fins 12, and the hose frame 21 are all hollow structures, and these internal cavities are interconnected, thus forming a cooling water chamber. Both ends of the duct frame 11 are provided with connecting terminals 14. The connecting terminals 14 can be used to connect the internal cavities of the duct frame 11 and the hose frame 21, achieving mutual communication between them, and can also be used to connect frame caps, achieving sealing at the ends of the duct frame 11.

[0043] Referring to Figures 1 and 2, a cooling water inlet 111 is provided on the inner side of the hollow tube near the end of the heat dissipation section 1 of the conduit frame 11. The cooling water inlet 111 is connected to the internal cavity of the conduit frame 11 and is connected to a water inlet cover 112. Circulating cooling water can be introduced into the cooling water cavity through the cooling water inlet 111, so that the heat dissipation frame can achieve rapid heat conduction and heat dissipation through the water flow. The cooling water inlet 111, which does not need to be introduced with cooling water, can also be sealed by the water inlet cover 112.

[0044] The implementation principle of a heat dissipation cable in this application embodiment is as follows:

[0045] When the cable core 3 located in the heat dissipation section 1 heats up, the heat generated by the cable core 3 can be fully conducted to the heat dissipation wing plates 12 on both sides through the thermally conductive rubber material 13. Then, through the water flow in the cavity inside the heat dissipation frame, the heat can be quickly absorbed and conducted to the conduit frame 11 and dissipated towards the inside of the hollow tube, or conducted to the flange 122 and dissipated towards the outside of the heat dissipation cable.

[0046] When the cable core 3 located in the bending section 2 heats up, the heat generated by the cable core 3 can be conducted to the hose frame 21 through the action of water flow and initially dissipated towards the inside of the hollow tube, or conducted to the heat dissipation section 1 and fully dissipated through the heat dissipation frame.

[0047] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this specific embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A heat dissipation cable, comprising a heat dissipation section (1) and a bending section (2), characterized in that: Both the heat dissipation section (1) and the bending section (2) include a cable core (3), a braided layer (4), and an outer sheath (5) arranged sequentially from the inside out. The heat dissipation section (1) also includes a heat dissipation frame made of high thermal conductivity metal material. The heat dissipation frame includes a conduit frame (11) located on the central axis of the cable. The conduit frame (11) is a hollow tubular structure. Several sets of heat dissipation wing plates (12) are arranged on the outer periphery of the conduit frame (11). The cable core (3) is evenly arranged between adjacent heat dissipation wing plates (12). Thermally conductive adhesive (13) is filled between the cable core (3) and the heat dissipation wing plates (12). The braided layer (4) and the outer sheath (5) located in the heat dissipation section (1) are sequentially covered on the outer periphery of the heat dissipation frame.

2. The heat dissipation cable according to claim 1, characterized in that: The bending section (2) also includes a flexible tube frame (21) located on the central axis of the cable. The flexible tube frame (21) is a hollow tubular structure. The ends of the flexible tube frame (21) are connected to the conduit frame (11) respectively. The cable cores (3) located in the bending section (2) are evenly arranged on the outer periphery of the flexible tube frame (21). Filling support blocks (22) are arranged between the cable cores (3). The braided layer (4) and the outer sheath (5) located in the bending section (2) are successively covered on the outer periphery of the cable cores (3) and the filling support blocks (22), and are kept flush with the outer diameter of the heat dissipation section (1).

3. A heat dissipation cable according to claim 2, characterized in that: The heat dissipation fin (12) includes a web (121) and a flange (122). The web (121) is perpendicular to the duct frame (11) and extends in all directions. The flange (122) is located at one end of the web (121) away from the duct frame (11). The flange (122) has an arc-shaped structure and is not connected to each other.

4. A heat dissipation cable according to claim 3, characterized in that: Several heat-conducting fins are provided on both sides of the web (121).

5. A heat dissipation cable according to claim 4, characterized in that: The heat-conducting fins are wavy and zigzag-shaped.

6. A heat dissipation cable according to claim 2, characterized in that: The conduit frame (11) and the heat dissipation fin plate (12) are both hollow structures and are interconnected. The conduit frame (11) has a cooling water inlet (111) on its inner circumferential side near the end of the heat dissipation section (1). The cooling water inlet (111) is connected to the internal cavity of the conduit frame (11) and the cooling water inlet (111) is connected to a water inlet cover (112).

7. A heat dissipation cable according to claim 6, characterized in that: The inside of the hose frame (21) is a cavity structure, and the cavity inside the hose frame (21) is connected to the cavity inside the conduit frame (11). Both ends of the conduit frame (11) are provided with connection terminals (14). The conduit frame (11) can be connected to the hose frame (21) through the connection terminals (14), or the frame end cap (15) can be connected through the connection terminals (14) to achieve sealing of the end of the conduit frame (11).

8. A heat dissipation cable according to claim 2, characterized in that: The hollow tube of the hose frame (21) is provided with a hose support (23).

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