A heat dissipation cable with metal heat conduction

Abstract

The application discloses a heat dissipation cable with metal heat conduction, which comprises a cable and a plurality of metal heat conductors; one end of the cable is connected with a power supply end, and the other end of the cable is connected with a power consumption end; the plurality of metal heat conductors are uniformly embedded in the cable at a certain interval. The application has the following beneficial effects: the heat dissipation efficiency is significantly improved, the three-section heat conduction structure cooperates with the outer ring convex point to accelerate heat dissipation and avoid local high temperature; the safety is better, the double insulation guarantee reduces the aging of the insulation layer and reduces the risk of failure; the structure has strong adaptability, and the flexibility and durability are considered, and the service life is prolonged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cable heat dissipation, in particular to a heat dissipation cable with metal heat conduction. BACKGROUND

[0002] In the field of power transmission and electronic device connection, as the core carrier of energy and signal transmission, the heat dissipation performance of the cable directly affects the operation stability and service life of the system. In the current structure design of conventional cables, the conductive core (hot wire) as the main heat source is usually wrapped with multiple layers of insulating materials (such as polyvinyl chloride, cross-linked polyethylene, etc.) and protective shells (such as rubber, metal armor, etc.) in turn.

[0003] However, in order to meet the electrical insulation performance requirements, the insulating materials are mostly high molecular polymers, and their thermal conductivity coefficients are generally low, significantly lower than those of metal materials. At the same time, in order to consider the mechanical strength and corrosion resistance, the protective shell is often made of composite plastic or plated metal, and the thermal conduction path has multiple interface contact thermal resistances, further hindering heat transfer. This structure makes it difficult for the Joule heat generated by the hot wire during operation to be effectively dissipated through the insulating layer and the shell, resulting in heat accumulation.

[0004] With the increase of power density of power equipment, the cable is in high temperature working condition for a long time, which not only accelerates the aging of the insulating material, increases the dielectric loss, and reduces the insulating strength, but also increases the risk of short circuit and breakdown. In addition, due to the difference in thermal expansion, structural stress may be caused, resulting in mechanical failure such as loose cable joint and sheath cracking. In the scenes of new energy vehicles, industrial control cabinets, high-density data centers, etc., the insufficient heat dissipation of the cable has become a key bottleneck restricting the miniaturization and high power development of the system, and a new type of cable design is needed to break through the limitations of the traditional structure and efficiently dissipate the heat of the hot wire.

[0005] At present, there are obvious limitations in the improvement schemes for cable heat dissipation in the industry. Some technologies reduce the current density by increasing the cross-sectional area of the cable, but this will increase the diameter of the cable, which is contrary to the trend of miniaturization of equipment, and it is difficult to lay in narrow spaces. Another scheme uses forced air cooling or liquid cooling to assist heat dissipation, which requires additional configuration of pump body, fan and other equipment, increasing the complexity and energy consumption of the system, and also has the risk of liquid leakage, noise, etc., which is not suitable for outdoor, humid and other harsh environments.

[0006] Therefore, developing a cable structure that can directly target the hot wire heat source and efficiently dissipate heat through a metal heat conduction path has become a key technical breakthrough to solve the above problems. SUMMARY

[0007] In view of the above technical problems, the present application provides a cable with air cooling heat dissipation, which can improve air cooling heat dissipation while avoiding the increase of material cost and transportation cost, and also does not sacrifice the flexibility of the cable.

[0008] The technical solution used in the present invention is: a heat dissipation cable with metal thermal conductivity, including a cable and several metal heat conductors; one end of the cable is connected to the power supply end, and the other end of the cable is connected to the power consumption end; the several metal heat conductors are evenly embedded in the cable at a certain distance.

[0009] Furthermore, the cable includes: a cable outer shell, an outer shell cavity, a cable inner shell, an inner shell cavity, a live wire cable and a neutral wire cable; the live wire cable and the neutral wire cable are arranged inside the cable inner shell; the cable inner shell is arranged inside the cable outer shell; the outer shell cavity is between the cable outer shell and the cable inner shell; the inner shell cavity is between the cable inner shell and the live wire cable, and between the cable inner shell and the neutral wire cable; the outer shell cavity and the inner shell cavity are filled with solid insulating material; the live wire cable includes a live wire core and a live wire insulating sleeve; the neutral wire cable includes a neutral wire core and a neutral wire insulating sleeve.

[0010] Furthermore, any one of the several metal thermal conductors includes a metal thermal conductive inner ring, a metal thermal conductive pipe and a metal thermal conductive outer ring; the metal thermal conductive inner ring is tightly wrapped around the outside of the live cable; one end of the metal thermal conductive pipe is connected to the metal thermal conductive inner ring, and the other end of the metal thermal conductive pipe is connected to the metal thermal conductive outer ring, and the metal thermal conductive pipe passes through the cable inner shell and the cable outer shell; the metal thermal conductive outer ring is embedded in the cable outer shell.

[0011] Furthermore, the metal heat-conducting inner ring and the metal heat-conducting connecting pipe are made of flexible metal material.

[0012] Furthermore, the metal heat-conducting outer ring is made of a rigid metal material.

[0013] Furthermore, the live wire insulation sleeve can prevent the live wire core from directly contacting the metal heat-conducting inner ring.

[0014] Furthermore, the outer surface of the metal heat-conducting outer ring is provided with protruding points.

[0015] Compared with the existing technology, the advantages of the present invention are: 1) the heat dissipation efficiency is significantly improved. The three-stage heat conduction structure cooperates with the raised points on the outer ring to accelerate heat dissipation and avoid local high temperature; 2) safety is better, double insulation is guaranteed, and aging of the insulation layer is reduced, reducing the risk of failure; 3) the structure has strong adaptability, taking into account flexibility and durability, and extending the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a diagram of the architecture of a heat dissipation cable system with metal thermal conductivity according to the present invention.

[0017] Figure 2 A detail view of a heat dissipation cable with metal heat conduction.

[0018] Figure 3 A cross-sectional view of a first heat dissipation cable with metal heat conduction.

[0019] Reference signs: 100-cable; 105-several metal heat conduction bodies; 101-cable shell; 1011-shell cavity; 102-cable inner shell; 1021-inner shell cavity; 103-live wire cable; 104-neutral wire cable; 1051-metal heat conduction inner ring; 1052-metal heat conduction connector; 1053-metal heat conduction outer ring. DETAILED DESCRIPTION

[0020] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0021] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0022] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0023] In the following, the present application will be described in detail with reference to the drawings and in combination with the embodiments. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0024] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The present invention will be described in detail below with reference to the accompanying drawings:

[0026] A cable with air cooling, such as Figure 1 As shown, it includes a cable 100 and several metal heat conductors 105 .

[0027] One end of the cable 100 is connected to the power supply end, and the other end of the cable 100 is connected to the power consumption end.

[0028] The plurality of metal heat conductors 105 are evenly embedded in the cable 100 at certain intervals.

[0029] It should be noted that the plurality of metal heat conductors 105 are mainly used to promote heat conduction and heat dissipation in the cable 100 .

[0030] like Figure 3 As shown, the cable 100 includes: a cable outer shell 101 , an outer shell cavity 1011 , a cable inner shell 102 , an inner shell cavity 1021 , a live wire cable 103 and a neutral wire cable 104 .

[0031] The live cable 103 and the neutral cable 104 are arranged inside the cable inner shell 102 .

[0032] The cable inner shell 102 is disposed inside the cable outer shell 101 .

[0033] The housing cavity 1011 is between the cable outer housing 101 and the cable inner housing 102 .

[0034] The inner shell cavity 1021 is between the cable inner shell 102 and the live cable 103 , and between the cable inner shell 102 and the neutral cable 104 .

[0035] The outer shell cavity 1011 and the inner shell cavity 1021 are filled with solid insulating material.

[0036] The live wire cable 103 includes a live wire core 1031 and a live wire insulation sleeve 1032 .

[0037] The neutral wire cable 104 includes a neutral wire core 1041 and a neutral wire insulation sleeve 1042 .

[0038] like Figure 3As shown, any one of the plurality of metal heat conductors 105 comprises a metal heat conductive inner ring 1051, a metal heat conductive connector 1052 and a metal heat conductive outer ring 1053.

[0039] The metal heat conductive inner ring 1051 is tightly wrapped around the outside of the live cable 103.

[0040] One end of the metal heat conductive connector 1052 is connected to the metal heat conductive inner ring 1051, and the other end of the metal heat conductive connector 1052 is connected to the metal heat conductive outer ring 1053, and the metal heat conductive connector 1052 passes through the cable inner shell 102 and the cable outer shell 101.

[0041] The metal heat conductive outer ring 1053 is inlaid in the cable outer shell 101.

[0042] It should be noted that the metal heat conductive inner ring 1051 and the metal heat conductive connector 1052 are composed of flexible metal materials, such as copper, which emphasizes ductility.

[0043] It should be noted that the metal heat conductive outer ring 1053 is composed of rigid metal materials, such as steel, which emphasizes firmness and wear resistance.

[0044] It should be noted that the live wire insulation sleeve 1032 can prevent the live wire core 1031 from directly contacting the metal heat conductive inner ring 1051.

[0045] It can be understood that the three-section structure of the metal heat conductor 105 is not accidental design, but a complete heat dissipation system formed by precise planning of the heat conduction path. The live cable 103 is the main heat source when the cable is running, and if the heat generated by the live cable 103 cannot be dissipated in time, it is easy to cause insulation layer aging or even short circuit failure due to high temperature. The metal heat conductive inner ring 1051 is directly wrapped around the outside of the live cable 103, which can contact the heat source in the first time and minimize the loss of heat in the initial stage of transmission; the metal heat conductive connector 1052 is like a "heat channel", which vertically transmits the heat absorbed by the inner ring to the metal heat conductive outer ring 1053, and its design of passing through the cable inner shell 102 and the cable outer shell 101 breaks the barrier of the multi-layer shell to heat transfer, so that the heat can cross the structural barrier; the metal heat conductive outer ring 1053 is the final heat dissipation terminal, which releases heat to the external environment. This "point-to-point" conduction path from the core heat source to the external environment greatly shortens the heat transfer distance compared with the traditional cable relying on natural heat dissipation of the shell, significantly improves the heat dissipation efficiency, and provides a key guarantee for the safe operation of the cable.

[0046] It can be understood that the solid insulation material filled in the shell cavity 1011 and the inner shell cavity 1021 plays a "double role" in the cable operation, both bearing the basic function of electrical insulation and playing an irreplaceable role in heat management. From the perspective of electrical safety, these materials can effectively isolate the live cable 103, the zero line cable 104, and the cable inner shell 102 and the cable shell 101, preventing current leakage from causing electric shock or short circuit accidents, and is the core element to ensure the insulation performance of the cable. From the perspective of heat transfer, such solid insulation materials usually have a low thermal conductivity, which can reduce the disordered diffusion of heat inside the cavity - if the cavity is hollow, heat will flow randomly inside the cavity, not only unable to concentrate and guide the metal heat conductor, but also may cause local heat accumulation; after filling the insulation material, heat will be limited to a specific area and can only be transferred outward along the high-efficiency path of the metal heat conductor, thereby forming the effect of "directional heat dissipation" with the metal heat conductor. At the same time, the solid material can also support the cable inner shell 102 and the cable shell 101, preventing the shell from deforming due to external pressure, and indirectly protecting the structural integrity of the metal heat conductor.

[0047] It can be understood that the metal heat-conducting inner ring 1051 is made of flexible metal material and closely adheres to the live cable 103, which is a humanized design after fully considering the actual use scenario of the cable. During the laying and use of the cable, it is inevitable to encounter bending, folding, and even slight twisting, especially in some power consumption environments that require frequent movement or adjustment of position, the deformation of the cable is more common. If the metal heat-conducting inner ring is made of rigid material, it is easy to produce gaps between the metal heat-conducting inner ring and the live cable 103 when the cable is bent, which prevents heat from being effectively transferred, and may even be broken due to the stress generated by deformation. The flexible metal material represented by copper has excellent ductility and plasticity, and can bend synchronously with the deformation of the live cable 103, always maintaining close adhesion to the surface of the cable, ensuring the continuity of heat conduction. This design allows the cable to have high heat dissipation capacity while retaining the flexibility of traditional cables, greatly expanding its application range.

[0048] It can be understood that the metal heat-conducting connector 1052 is made of flexible metal material to adapt to the dynamic changes of the overall structure of the cable and ensure the persistent smoothness of the heat conduction path. As a key component connecting the metal heat-conducting inner ring 1051 and the metal heat-conducting outer ring 1053, the metal heat-conducting connector 1052 needs to pass through the cable inner shell 102 and the cable outer shell 101, which means that it is in a special position of "connecting the past and the future" - it needs to receive the heat from the inner ring and overcome the constraints of the shell structure. When the cable deforms such as bending and stretching, the heat-conducting connector passing through the inner and outer shells will be subjected to stress from different directions: if it is bent to one side, the part of the connector close to the inner side of the bend will be extruded, and the part on the outer side will be stretched. At this time, the ductility of the flexible material can play a role, and through its slight deformation, it can offset these stresses and avoid the situation that the connector is broken or separated from the inner ring and the outer ring. On the contrary, if a rigid material is used, it is easy to crack or even break under frequent deformation, which will interrupt the heat conduction path and affect the heat dissipation effect of the entire cable.

[0049] It can be understood that the metal heat-conducting outer ring 1053 is made of rigid metal material and embedded in the cable outer shell 101, which is the optimal choice after considering the adaptability to the external environment and the stability of heat dissipation. As the "last stop" of heat transfer to the outside, the metal heat-conducting outer ring needs to be in direct contact with the cable outer shell 101 and the external environment, which requires it to have sufficient structural strength: during the laying of the cable, it may rub against objects such as the ground and walls; in long-term use, it may also be affected by external forces such as extrusion and collision. Rigid metal materials such as metal steel, with their high hardness and wear resistance, can effectively resist these external damages and protect the heat-conducting outer ring itself and the heat-conducting connector connected to it. At the same time, the design of being embedded in the cable outer shell 101 forms a stable overall structure with the shell, avoiding displacement due to external forces and ensuring that heat can be continuously and stably transferred from the heat-conducting connector to the outer ring, and then dissipated through the contact between the outer ring and the air, ensuring the reliability of the entire heat dissipation system.

[0050] It can be understood that the several metal heat conductors 105 are evenly embedded in the cable 100 at a certain interval, which is a scientific scheme designed based on the heat distribution characteristics of the fire cable 103. During the operation of the cable, the fire cable 103 will generate heat due to resistance when passing through current, and the heat will gradually accumulate along the length direction of the cable. If only one or a few heat conductors are arranged, the heat will continuously accumulate in the area where no heat conductor is arranged, forming a local high temperature, which may cause the insulation layer in this area to age rapidly, and even cause safety hazards. The evenly distributed heat conductors can take on the heat dissipation task at different positions of the fire cable 103 like “relay stations”: each heat conductor is responsible for absorbing the heat at its position and conducting it out, so that the heat is intercepted in segments during transmission, avoiding concentration in a certain area. In addition, the uniform interval can also ensure that the heat dissipation points on the cable shell 101 are evenly distributed, so that the outside air can exchange heat with multiple outer rings at the same time, further improving the heat dissipation efficiency, keeping the temperature of the entire cable within a safe range, and prolonging its service life.

[0051] It should be noted that the outer surface of the metal heat conducting outer ring 1053 is provided with a protruding point.

[0052] It can be understood that the protruding point is arranged on the outer surface of the metal heat conducting outer ring 1053. From the basic principle of heat exchange, the heat exchange efficiency between an object and air is closely related to the contact area. The larger the contact area, the more heat is transferred per unit time. As the final carrier for releasing heat to the outside, the protruding point on the outer surface of the metal heat conducting outer ring 1053 can significantly increase the contact area with air. Compared with a smooth outer surface, the presence of the protruding point forms more “heat dissipation corners” on the outer ring surface. The side and top of each protruding point can become a new heat dissipation area, which is like “building” countless small heat dissipation platforms on the originally flat heat dissipation surface, so that heat has more channels to transfer outward. The design of the protruding point can also effectively disturb the airflow state on the outer ring surface, improving the air cooling effect. When air flows through a smooth outer ring surface, it often forms a laminar flow state, and the relative movement between the airflow and the surface is relatively gentle, and heat can only be transferred by slow convection. When the airflow encounters the protruding point, a vortex and turbulent flow are formed around the protruding point. This turbulent airflow can more fully contact the outer ring surface, break the original stationary air boundary layer, and accelerate the diffusion of heat from the outer ring surface to the air. Especially under natural air cooling conditions, this airflow disturbance is more important, as it can make limited air flow have greater heat dissipation efficiency. Even in an environment with relatively poor ventilation conditions, the airflow can be guided to form a local circulation by the protruding point, reducing the residence time of heat on the surface.

[0053] In addition, the setting of the protruding points can also enhance the structural strength and wear resistance of the metal heat-conducting outer ring 1053. Since the outer ring is made of rigid metal material, it has certain impact resistance. The presence of the protruding points is equivalent to forming a layer of "protective protrusions" on the outer surface. When the cable is subjected to external slight collision or friction, the protruding points will first come into contact with external objects, thereby reducing the wear of the surface of the outer ring body. At the same time, the three-dimensional structure formed by the protruding points and the outer ring body can disperse external forces and avoid local stress concentration leading to deformation of the outer ring, which is crucial to maintaining the integrity of the heat dissipation structure. Once the surface of the outer ring is depressed due to wear or collision, not only the heat dissipation area will be reduced, but also the connection stability with the metal heat-conducting connector 1052 will be affected, thereby interrupting the heat transfer path.

[0054] It can be understood that, by the setting of the plurality of metal heat-conducting bodies 105, the metal heat-conducting inner ring 1051 is directly attached to the outer part of the live cable 103, which can first contact the heat source and minimize the loss of heat in the initial stage of heat transfer. The metal heat-conducting connector 1052 is like a "heat channel" that vertically transfers the heat absorbed by the inner ring to the metal heat-conducting outer ring 1053. The design of the metal heat-conducting connector 1052 passing through the cable inner shell 102 and the cable outer shell 101 breaks the barrier of the multi-layer shell to heat transfer, allowing heat to cross the structural barrier. The metal heat-conducting outer ring 1053 serves as the final heat dissipation terminal to release heat to the external environment.

[0055] Those skilled in the art can understand that the drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the drawings are not necessarily required for implementing the present application. Those skilled in the art can understand that the modules in the device in the implementation scenario can be distributed in the device in the implementation scenario according to the description of the implementation scenario, or can be changed and located in one or more devices different from the implementation scenario. The modules of the above implementation scenario can be combined into one module, or can be further split into multiple sub-modules.

[0056] The above application number is only for description, and does not represent the advantages and disadvantages of the implementation scenario. The above disclosure is only a few specific implementation scenarios of the present application, but the present application is not limited thereto, and any changes that can be thought of by those skilled in the art should fall within the protection scope of the present application.

Claims

1. A heat dissipation cable with metal thermal conductivity, characterized in that: It includes a cable (100) and a plurality of metal heat conductors (105); One end of the cable (100) is connected to the power supply end, and the other end of the cable (100) is connected to the power consumption end; The plurality of metal heat conductors (105) are evenly embedded in the cable (100) at a certain interval; The cable (100) comprises: a cable outer shell (101), an outer shell cavity (1011), a cable inner shell (102), an inner shell cavity (1021), a live wire cable (103) and a neutral wire cable (104); The live cable (103) and the neutral cable (104) are arranged inside the cable inner shell (102); The cable inner shell (102) is arranged inside the cable outer shell (101); The housing cavity (1011) is between the cable housing (101) and the cable inner housing (102); The inner shell cavity (1021) is between the cable inner shell (102) and the live cable (103), and between the cable inner shell (102) and the neutral cable (104); The outer shell cavity (1011) and the inner shell cavity (1021) are filled with solid insulating material; The live wire cable (103) comprises a live wire core (1031) and a live wire insulation sleeve (1032); The neutral wire cable (104) comprises a neutral wire core (1041) and a neutral wire insulation sleeve (1042); Any one of the plurality of metal heat conductors (105) comprises a metal heat conductive inner ring (1051), a metal heat conductive connecting pipe (1052), and a metal heat conductive outer ring (1053); The metal heat-conducting inner ring (1051) is tightly wrapped around the outside of the live cable (103); One end of the metal heat-conducting pipe (1052) is connected to the metal heat-conducting inner ring (1051), and the other end of the metal heat-conducting pipe (1052) is connected to the metal heat-conducting outer ring (1053); the metal heat-conducting pipe (1052) passes through the cable inner shell (102) and the cable outer shell (101); The metal heat-conducting outer ring (1053) is embedded in the cable housing (101).

2. The heat dissipation cable with metal thermal conductivity according to claim 1, characterized in that: The metal heat-conducting inner ring (1051) and the metal heat-conducting connecting pipe (1052) are composed of flexible metal materials.

3. The heat dissipation cable with metal thermal conductivity according to claim 2, characterized in that: The metal heat-conducting outer ring (1053) is composed of a rigid metal material.

4. The heat dissipation cable with metal thermal conductivity according to claim 3, characterized in that: The live wire insulation sleeve (1032) can prevent the live wire core (1031) from directly contacting the metal heat-conducting inner ring (1051).

5. The heat dissipation cable with metal thermal conductivity according to claim 4, characterized in that: The outer surface of the metal heat-conducting outer ring (1053) is provided with a protruding point.

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