High-frequency bus conductor structure with improved current carrying capacity and manufacturing process thereof

Abstract

This invention relates to the field of busbar technology and discloses a high-frequency busbar conductor structure and its manufacturing process for improving current carrying capacity. It solves the problem of poor heat dissipation in existing busbars that affects current carrying capacity. The structure includes a tubular busbar body, which comprises a combined insulating sleeve, a tubular copper conductor, an active air supply and heat dissipation mechanism, and an exhaust pipe. The combined insulating sleeve covers the outer surface of the tubular copper conductor. The active air supply and heat dissipation mechanism extends through one end of the bottom of the combined insulating sleeve and connects to the tubular copper conductor. The exhaust pipe extends through the other end of the bottom of the combined insulating sleeve and connects to the tubular copper conductor. The tubular copper conductor contains several auxiliary heat dissipation components, which consist of an aluminum nitride ceramic insulating heat-conducting sleeve, an aluminum heat dissipation sleeve, an aluminum central tube, several heat dissipation aluminum plates, and several heat dissipation fins. Through this busbar structure and manufacturing process, heat dissipation efficiency can be effectively improved, thereby increasing current carrying capacity.

Description

Technical Field

[0001] This invention belongs to the field of busbar technology, specifically a high-frequency busbar conductor structure and its manufacturing process for improving current carrying capacity. Background Technology

[0002] Busbars are a type of industrial cable, characterized by high current carrying capacity (up to 12000A), high mechanical strength, and excellent insulation performance. They are suitable for various indoor and outdoor environments. Existing busbars typically use natural heat dissipation to achieve heat dissipation, but this method is inefficient. Excessive busbar temperature can affect current carrying capacity, as well as the safety and lifespan of the busbar. Therefore, this application proposes a high-frequency busbar conductor structure and its manufacturing process to improve current carrying capacity. Summary of the Invention

[0003] In view of the above situation and to overcome the defects of the prior art, the present invention provides a high-frequency bus conductor structure and its manufacturing process to improve the current carrying capacity, which effectively solves the problem that the poor heat dissipation of the existing bus affects the current carrying capacity.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a high-frequency bus conductor structure and its manufacturing process for improving current carrying capacity, comprising a tubular bus body, wherein the tubular bus body is composed of a combined insulating sleeve, a tubular copper conductor, an active air supply and heat dissipation mechanism, and an exhaust pipe. The combined insulating sleeve covers the outer surface of the tubular copper conductor, the active air supply and heat dissipation mechanism passes through one end of the bottom of the combined insulating sleeve and is connected to the tubular copper conductor, and the exhaust pipe passes through the other end of the bottom of the combined insulating sleeve and is connected to the tubular copper conductor. A plurality of auxiliary heat dissipation components are arranged inside the tubular copper conductor, and the auxiliary heat dissipation components are arranged at intervals.

[0005] The auxiliary heat dissipation component consists of an aluminum nitride ceramic insulating thermally conductive sleeve, an aluminum heat dissipation sleeve, an aluminum central tube, several heat dissipation aluminum plates, and several heat dissipation fins. The aluminum nitride ceramic insulating thermally conductive sleeve is fitted onto the outer surface of the aluminum heat dissipation sleeve. The arc-shaped outer surface of the aluminum nitride ceramic insulating thermally conductive sleeve is in contact with the inner surface of the tubular copper conductor. The aluminum central tube is located at the center inside the aluminum heat dissipation sleeve. The heat dissipation aluminum plates are fixedly connected between the aluminum heat dissipation sleeve and the aluminum central tube. The heat dissipation fins are fixedly connected to the side of the heat dissipation aluminum plates.

[0006] Preferably, the inner surface of the aluminum heat sink is fixedly provided with a number of protruding ribs, the cross-section of the protruding ribs is a semi-circular structure, and the protruding ribs and the aluminum heat sink are integrally formed.

[0007] Preferably, one end of the outer surface of the aluminum heat sink is provided with a limiting protrusion ring that matches the aluminum nitride ceramic insulating heat-conducting sleeve. The outer diameter of the limiting protrusion ring is smaller than the outer diameter of the aluminum nitride ceramic insulating heat-conducting sleeve and larger than the inner diameter of the aluminum nitride ceramic insulating heat-conducting sleeve.

[0008] Preferably, a chamfered groove is provided at the end of the outer surface of the aluminum nitride ceramic insulating heat-conducting sleeve away from the limiting protrusion ring.

[0009] Preferably, thermally conductive silicone grease is filled between the aluminum nitride ceramic insulating thermally conductive sleeve and the inner surface of the tubular copper conductor.

[0010] Preferably, a copper connecting plate is fixedly provided at one end of the tubular copper conductor, and a copper connecting sleeve is fixedly provided at the other end of the tubular copper conductor.

[0011] Preferably, the combined insulating sleeve is composed of a PVC sheath layer, a grounding shield layer, an outer shield layer, a main insulating layer, and an inner shield layer. The PVC sheath layer is fitted on the outer surface of the grounding shield layer, the grounding shield layer is fitted on the outer surface of the outer shield layer, the outer shield layer is fitted on the outer surface of the main insulating layer, and the main insulating layer is fitted on the outer surface of the inner shield layer.

[0012] Preferably, the active air supply and heat dissipation mechanism consists of a support frame, a centrifugal fan, a controller, an L-shaped air inlet pipe, an air supply pipe, an air collector hood, a sealing cover, a mesh partition, and a filter element. The support frame is installed at one end of the tubular busbar body, the centrifugal fan is fixedly connected to the bottom end of the support frame, the controller is fixedly connected to one side of the support frame, the L-shaped air inlet pipe is connected to the air inlet of the centrifugal fan, the air supply pipe is connected between the air outlet of the centrifugal fan and the tubular busbar body, the air collector hood is fixedly connected to the bottom end of the L-shaped air inlet pipe, the sealing cover is threadedly connected to the bottom end of the air collector hood, the mesh partition is fixedly connected to the inside of the sealing cover, and the filter element is laid inside the sealing cover and located at the top of the mesh partition.

[0013] A manufacturing process for a high-frequency busbar conductor structure to achieve enhanced current-carrying capacity includes the following steps:

[0014] S1. High-purity copper is selected as the raw material, and tube blanks are formed through smelting and casting processes. Subsequently, the required tubular copper conductors are formed through mechanical processing such as rolling, drawing, and extrusion.

[0015] S2. The aluminum heat sink, aluminum central tube, heat sink aluminum plate and heat sink fins are processed and shaped by casting, welding and other processing methods. The aluminum nitride ceramic insulating thermally conductive sleeve is nested on the outer surface of the aluminum heat sink, and thermally conductive silicone grease is filled between the two.

[0016] S3. A through hole is provided on the cooled tubular copper conductor, and the through hole is located at one end of the auxiliary heat dissipation component installation position.

[0017] S4. Using a thermal grease feeding device, thermal grease is squeezed onto the inner surface of the tubular copper conductor to form a ring structure, which is either a continuous arc shape or a continuous dot structure.

[0018] S5. Use a pressing tool to press the auxiliary heat dissipation component into the inside of the tubular copper conductor. When the auxiliary heat dissipation component is covered with a ring-shaped thermal grease, the thermal grease will be subjected to extrusion pressure and adhere to the inner surface of the tubular copper conductor. As the auxiliary heat dissipation component continues to move, the thermal grease fills the space between the auxiliary heat dissipation component and the tubular copper conductor to improve the thermal conductivity.

[0019] S6. The PVC sheath, grounding shield, outer shield, main insulation layer and inner shield are wrapped around the outside of the tubular copper conductor by co-extrusion process. Finally, the active air supply and heat dissipation mechanism and exhaust pipe are installed.

[0020] Preferably, the thermal grease feeding device consists of a combined conveying pipe and a steel rope. The combined conveying pipe consists of a rigid long pipe, a flexible metal pipe, and a rigid short pipe. The flexible metal pipe is fixedly connected between the rigid long pipe and the rigid short pipe. Several guide rings are fixedly provided on one side of each of the rigid long pipe, the flexible metal pipe, and the rigid short pipe. The steel rope passes through the guide rings. One end of the steel rope is fixedly connected to one end of the rigid short pipe, and a pull ring is fixedly provided on the other end of the steel rope.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] (1) In operation, by setting up a tubular copper conductor, the surface area of ​​the conductor can be significantly increased, making the surface current density distribution more uniform, thereby effectively reducing the skin effect (the skin effect coefficient Kf is close to 1), reducing AC resistance and power loss. At the same time, the hollow tube can form an air channel, which can further reduce the temperature rise and increase the current carrying capacity through convection heat dissipation.

[0023] (2) By setting up an auxiliary heat dissipation component consisting of an aluminum nitride ceramic insulating heat-conducting sleeve, an aluminum heat dissipation sleeve, an aluminum central tube, several heat dissipation aluminum plates and several heat dissipation fins, the heat conduction efficiency of the tubular copper conductor can be improved, and the heat of the tubular copper conductor can be quickly diffused to the auxiliary heat dissipation component, which can effectively improve the heat conduction and heat dissipation efficiency.

[0024] (3) By setting up an exhaust duct and an active air supply and heat dissipation mechanism consisting of a support frame, centrifugal fan, controller, L-shaped air inlet duct, air supply duct, air collection hood, sealing hood, mesh partition and filter element, forced convection can be formed inside the tubular copper conductor. In conjunction with auxiliary heat dissipation components, the heat dissipation efficiency of the tubular copper conductor can be further improved, thereby enhancing the current carrying capacity. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0026] In the attached diagram:

[0027] Figure 1 This is one of the schematic diagrams of the tubular busbar body structure of the present invention;

[0028] Figure 2 This is the second schematic diagram of the tubular busbar body structure of the present invention;

[0029] Figure 3 This is a partial structural diagram of the tubular busbar body of the present invention;

[0030] Figure 4 This is a schematic diagram of the active air supply and heat dissipation mechanism of the present invention;

[0031] Figure 5 This is a schematic diagram of the connection structure between the auxiliary heat dissipation component and the tubular copper conductor of the present invention;

[0032] Figure 6 This is a schematic diagram of the connection structure between the aluminum nitride ceramic insulating heat-conducting sleeve and the aluminum heat dissipation sleeve of the present invention.

[0033] Figure 7 This is a flowchart illustrating the assembly process of the auxiliary heat dissipation component and the tubular copper conductor of the present invention.

[0034] Figure 8 This is one of the structural schematic diagrams of the thermal grease feeding device of the present invention;

[0035] Figure 9 This is the second schematic diagram of the thermal grease feeding device of the present invention;

[0036] In the diagram: 1. Tubular busbar body; 2. Combined insulating sleeve; 3. Tubular copper conductor; 4. Active air supply and heat dissipation mechanism; 5. Exhaust duct; 6. Auxiliary heat dissipation components; 7. Aluminum nitride ceramic insulating thermally conductive sleeve; 8. Aluminum heat dissipation sleeve; 9. Aluminum central tube; 10. Heat dissipation aluminum plate; 11. Heat dissipation fins; 12. Raised rib; 13. Limiting raised ring; 14. Chamfered groove; 15. Copper connecting plate; 16. Copper connecting sleeve; 17. PVC sheath layer; 18. Grounding shielding layer; 19. 20. Outer shielding layer; 21. Main insulation layer; 22. Inner shielding layer; 23. Support frame; 24. Centrifugal fan; 25. Controller; 26. L-shaped air inlet duct; 27. Air supply duct; 28. Air collection hood; 29. ​​Sealing hood; 30. Mesh partition; 31. Filter element; 32. Through hole; 33. Thermal grease feeding device; 34. Combined conveying pipe; 35. Steel rope; 36. Rigid long pipe; 37. Flexible metal pipe; 38. Rigid short pipe; 39. Guide ring; 30. Pull ring. Detailed Implementation

[0037] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0038] Implementation examples, by Figures 1 to 9 The present invention discloses a high-frequency bus conductor structure for improving current carrying capacity, comprising a tubular bus body 1. The tubular bus body 1 is composed of a combined insulating sleeve 2, a tubular copper conductor 3, an active air supply and heat dissipation mechanism 4, and an exhaust pipe 5. The combined insulating sleeve 2 covers the outer surface of the tubular copper conductor 3. The active air supply and heat dissipation mechanism 4 passes through one end of the bottom of the combined insulating sleeve 2 and is connected to the tubular copper conductor 3. The exhaust pipe 5 passes through the other end of the bottom of the combined insulating sleeve 2 and is connected to the tubular copper conductor 3. A plurality of auxiliary heat dissipation components 6 are arranged inside the tubular copper conductor 3. The auxiliary heat dissipation components 6 are spaced apart and are composed of an aluminum nitride ceramic insulating heat-conducting sleeve 7, an aluminum heat dissipation sleeve 8, an aluminum central tube 9, a plurality of heat dissipation aluminum plates 10, and a plurality of heat dissipation fins 11. The aluminum nitride ceramic insulating heat-conducting sleeve 7 is sleeved on the outer surface of the aluminum heat dissipation sleeve 8. The arc-shaped outer surface of the aluminum nitride ceramic insulating heat-conducting sleeve 7... The surface is attached to the inner surface of the tubular copper conductor 3. The aluminum central tube 9 is located at the center of the aluminum heat sink 8. The heat sink aluminum plate 10 is fixedly connected between the aluminum heat sink 8 and the aluminum central tube 9. The heat sink fins 11 are fixedly connected to the side of the heat sink aluminum plate 10. Several protruding ribs 12 are fixedly provided on the inner surface of the aluminum heat sink 8. The cross-section of the protruding ribs 12 is a semi-circular structure. The protruding ribs 12 and the aluminum heat sink 8 are integrally formed. One end of the outer surface of the aluminum heat sink 8 is provided with a limiting protruding ring 13 that matches the aluminum nitride ceramic insulating heat conducting sleeve 7. The outer diameter of the limiting protruding ring 13 is smaller than the outer diameter of the aluminum nitride ceramic insulating heat conducting sleeve 7 and larger than the inner diameter of the aluminum nitride ceramic insulating heat conducting sleeve 7. The outer surface of the aluminum nitride ceramic insulating heat conducting sleeve 7 away from the limiting protruding ring 13 is provided with a chamfered groove 14. Thermal conductive silicone grease is filled between the aluminum nitride ceramic insulating heat conducting sleeve 7 and the inner surface of the tubular copper conductor 3.

[0039] The aluminum nitride ceramic insulating heat-conducting sleeve 7 improves insulation and heat insulation performance. Heat from the tubular copper conductor 3 is transferred to the aluminum nitride ceramic insulating heat-conducting sleeve 7, and then from the aluminum nitride ceramic insulating heat-conducting sleeve 7 to the aluminum heat sink 8, aluminum central tube 9, heat dissipation aluminum plate 10, and heat dissipation fins 11, achieving rapid heat diffusion. The active air supply heat dissipation mechanism 4 and exhaust pipe 5 enable forced air convection inside the tubular copper conductor 3, achieving efficient heat dissipation through air convection. The heat dissipation aluminum plate 10 and heat dissipation fins 11 effectively improve heat dissipation efficiency. The rib 12 can achieve a reinforcing effect and can bear the force during the process of pressing the auxiliary heat dissipation component 6 into the tubular copper conductor 3, so as to avoid the overall deformation of the auxiliary heat dissipation component 6. The limiting convex ring 13 can limit the aluminum nitride ceramic insulating heat-conducting sleeve 7, so as to prevent the aluminum nitride ceramic insulating heat-conducting sleeve 7 and the aluminum heat dissipation sleeve 8 from loosening during the pressing process. The chamfered groove 14 can allow the thermal grease to enter better between the aluminum nitride ceramic insulating heat-conducting sleeve 7 and the aluminum heat dissipation sleeve 8 during the pressing process, so as to achieve efficient heat conduction.

[0040] A copper connecting plate 15 is fixedly installed at one end of the tubular copper conductor 3, and a copper connecting sleeve 16 is fixedly installed at the other end of the tubular copper conductor 3, which can realize the connection function. The combined insulating sleeve 2 is composed of a PVC sheath layer 17, a grounding shield layer 18, an outer shield layer 19, a main insulation layer 20, and an inner shield layer 21. The PVC sheath layer 17 is fitted on the outer surface of the grounding shield layer 18, the grounding shield layer 18 is fitted on the outer surface of the outer shield layer 19, the outer shield layer 19 is fitted on the outer surface of the main insulation layer 20, and the main insulation layer 20 is fitted on the outer surface of the inner shield layer 21, which can improve the insulation performance and shielding performance.

[0041] The active air supply and heat dissipation mechanism 4 consists of a support frame 22, a centrifugal fan 23, a controller 24, an L-shaped air inlet pipe 25, an air supply pipe 26, an air collector hood 27, a sealing cover 28, a mesh partition 29, and a filter element 30. The support frame 22 is installed at one end of the tubular busbar body 1. The centrifugal fan 23 is fixedly connected to the bottom end of the support frame 22. The controller 24 is fixedly connected to one side of the support frame 22. The L-shaped air inlet pipe 25 is connected to the air inlet of the centrifugal fan 23. The air supply pipe 26 is connected between the air outlet of the centrifugal fan 23 and the tubular busbar body 1. The air collector hood 27 is fixedly connected to the bottom end of the L-shaped air inlet pipe 25. The sealing cover 28 is threadedly connected to the bottom end of the air collector hood 27. The mesh partition 29 is fixedly connected to the inside of the sealing cover 28. The filter element 30 is laid inside the sealing cover 28 and located at the top of the mesh partition 29.

[0042] When the active air supply and heat dissipation mechanism 4 is working, the centrifugal fan 23 starts, and external air enters the centrifugal fan 23 through the L-shaped air inlet pipe 25, the air collector 27, the sealing cover 28, the mesh partition 29 and the filter element 30. Then, it is sent into the tubular copper conductor 3 through the air supply pipe 26 to achieve forced heat dissipation. The mesh partition 29 and the filter element 30 can achieve the filtering function to prevent external dust and impurities from entering the tubular copper conductor 3. The exhaust pipe 5 realizes exhaust heat dissipation.

[0043] A manufacturing process for a high-frequency busbar conductor structure to achieve enhanced current-carrying capacity includes the following steps:

[0044] S1. High-purity copper is selected as the raw material, and tube blanks are formed through smelting and casting processes. Subsequently, the required tubular copper conductors are formed through mechanical processing such as rolling, drawing, and extrusion.

[0045] S2. The aluminum heat sink 8, aluminum central tube 9, heat sink aluminum plate 10 and heat sink fins 11 are processed and shaped by casting, welding and other processing methods, and the aluminum nitride ceramic insulating thermally conductive sleeve 7 is nested on the outer surface of the aluminum heat sink 8, and thermally conductive silicone grease is filled between the two.

[0046] S3. A through hole 31 is provided on the cooled tubular copper conductor 3. The through hole 31 is located at one end of the installation position of the auxiliary heat dissipation component 6.

[0047] S4. The thermal grease is squeezed onto the inner surface of the tubular copper conductor 3 using the thermal grease feeding device 32 to form a ring structure, which is a continuous arc shape or a continuous dot structure.

[0048] S5. Use a pressing tool to press the auxiliary heat dissipation component 6 into the interior of the tubular copper conductor 3. When the auxiliary heat dissipation component 6 is covered with a ring-shaped thermal grease, the thermal grease will be subjected to extrusion pressure and adhere to the inner surface of the tubular copper conductor 3. As the auxiliary heat dissipation component 6 continues to move, the thermal grease fills the space between the auxiliary heat dissipation component 6 and the tubular copper conductor 3 to improve thermal conductivity. If the tubular copper conductor 3 needs to be bent during the later laying process, it will be cold-bent using a special tool. The auxiliary heat dissipation component 6 will not be installed at the bending position during the early production process to avoid deformation of the auxiliary heat dissipation component 6 and damage to the tubular copper conductor 3 during bending.

[0049] S6. The PVC sheath layer 17, grounding shield layer 18, outer shield layer 19, main insulation layer 20, and inner shield layer 21 are wrapped around the outside of the tubular copper conductor 3 by co-extrusion processing. Finally, the active air supply and heat dissipation mechanism 4 and exhaust pipe 5 are installed.

[0050] The thermal grease feeding device 32 consists of a combined conveying pipe 33 and a steel rope 34. The combined conveying pipe 33 consists of a rigid long pipe 35, a flexible metal pipe 36, and a rigid short pipe 37. The flexible metal pipe 36 is fixedly connected between the rigid long pipe 35 and the rigid short pipe 37. Several guide rings 38 are fixedly provided on one side of the rigid long pipe 35, the flexible metal pipe 36, and the rigid short pipe 37. The steel rope 34 passes through the guide rings 38. One end of the steel rope 34 is fixedly connected to one end of the rigid short pipe 37, and a pull ring 39 is fixedly provided on the other end of the steel rope 34.

[0051] When the thermal grease feeding device 32 is working, one end of the rigid long tube 35 is connected to the thermal grease extrusion device. The flexible metal tube 36 and the rigid short tube 37 are inserted into the interior of the tubular copper conductor 3 through the through hole 31. The thermal grease enters the interior of the rigid long tube 35, the flexible metal tube 36 and the rigid short tube 37. Then, the steel rope 34 is pulled, which can drive the rigid short tube 37 to move. At this time, the flexible metal tube 36 can be bent. By controlling the pulling distance of the steel rope 34, the position of the rigid short tube 37 can be adjusted. Through multiple adjustments and compressions of the thermal grease, thermal grease can be squeezed into a ring inside the tubular copper conductor 3.

[0052] In operation, by setting up a tubular copper conductor, the surface area of ​​the conductor can be significantly increased, resulting in a more uniform distribution of surface current density. This effectively reduces the skin effect (the skin effect coefficient Kf is close to 1), reducing AC resistance and power loss. Simultaneously, an airflow channel can be formed inside the hollow tube, further reducing temperature rise and increasing current carrying capacity through convection cooling. By setting up an auxiliary heat dissipation assembly consisting of an aluminum nitride ceramic insulating heat-conducting sleeve, an aluminum heat dissipation sleeve, an aluminum central tube, several heat dissipation aluminum plates, and several heat dissipation fins, the thermal conductivity of the tubular copper conductor can be improved, allowing heat to quickly diffuse to the auxiliary heat dissipation assembly, effectively improving both thermal conductivity and heat dissipation efficiency. By setting up an exhaust duct and an active airflow cooling mechanism consisting of a support frame, centrifugal fan, controller, L-shaped air inlet duct, air outlet duct, air collector hood, sealing hood, mesh partition, and filter element, forced convection can be formed inside the tubular copper conductor. Combined with the auxiliary heat dissipation assembly, this further improves the heat dissipation efficiency of the tubular copper conductor, thereby increasing its current carrying capacity.

Claims

1. A high-frequency busbar conductor structure for increasing current carrying capacity, comprising a tubular busbar body (1), characterized in that: The tubular busbar body (1) is composed of a combined insulating sleeve (2), a tubular copper conductor (3), an active air supply and heat dissipation mechanism (4), and an exhaust pipe (5). The combined insulating sleeve (2) covers the outer surface of the tubular copper conductor (3). The active air supply and heat dissipation mechanism (4) passes through one end of the bottom of the combined insulating sleeve (2) and is connected to the tubular copper conductor (3). The exhaust pipe (5) passes through the other end of the bottom of the combined insulating sleeve (2) and is connected to the tubular copper conductor (3). Several auxiliary heat dissipation components (6) are provided inside the tubular copper conductor (3). The auxiliary heat dissipation components (6) are spaced apart. The auxiliary heat dissipation component (6) consists of an aluminum nitride ceramic insulating heat-conducting sleeve (7), an aluminum heat dissipation sleeve (8), an aluminum central tube (9), several heat dissipation aluminum plates (10) and several heat dissipation fins (11). The aluminum nitride ceramic insulating heat-conducting sleeve (7) is fitted on the outer surface of the aluminum heat dissipation sleeve (8). The arc-shaped outer surface of the aluminum nitride ceramic insulating heat-conducting sleeve (7) is in contact with the inner surface of the tubular copper conductor (3). The aluminum central tube (9) is located in the center of the aluminum heat dissipation sleeve (8). The heat dissipation aluminum plates (10) are fixedly connected between the aluminum heat dissipation sleeve (8) and the aluminum central tube (9). The heat dissipation fins (11) are fixedly connected to the side of the heat dissipation aluminum plates (10).

2. A high frequency busbar conductor structure for improved current carrying capability according to claim 1, characterized in that: The inner surface of the aluminum heat sink (8) is fixedly provided with several protruding ribs (12). The cross section of the protruding ribs (12) is a semi-circular structure. The protruding ribs (12) and the aluminum heat sink (8) are integrally formed.

3. A high frequency busbar conductor structure for improved current carrying capability as claimed in claim 1, wherein: One end of the outer surface of the aluminum heat sink sleeve (8) is provided with a limiting protrusion ring (13) that matches the aluminum nitride ceramic insulating heat-conducting sleeve (7). The outer diameter of the limiting protrusion ring (13) is smaller than the outer diameter of the aluminum nitride ceramic insulating heat-conducting sleeve (7) and larger than the inner diameter of the aluminum nitride ceramic insulating heat-conducting sleeve (7).

4. A high frequency busbar conductor structure for improved current carrying capability according to claim 3, characterized in that: The aluminum nitride ceramic insulating heat-conducting sleeve (7) has a chamfered groove (14) at the end of its outer surface away from the limiting protrusion ring (13).

5. A high frequency busbar conductor structure for improved current carrying capability as claimed in claim 1, wherein: Thermally conductive silicone grease is filled between the aluminum nitride ceramic insulating thermally conductive sleeve (7) and the inner surface of the tubular copper conductor (3).

6. A high frequency busbar conductor structure for improved current carrying capability as claimed in claim 1, wherein: A copper connecting plate (15) is fixedly installed at one end of the tubular copper conductor (3), and a copper connecting sleeve (16) is fixedly installed at the other end of the tubular copper conductor (3).

7. A high frequency busbar conductor structure for improved current carrying capability as claimed in claim 1, wherein: The combined insulating sleeve (2) is composed of a PVC sheath layer (17), a grounding shield layer (18), an outer shield layer (19), a main insulating layer (20), and an inner shield layer (21). The PVC sheath layer (17) is fitted on the outer surface of the grounding shield layer (18), the grounding shield layer (18) is fitted on the outer surface of the outer shield layer (19), the outer shield layer (19) is fitted on the outer surface of the main insulating layer (20), and the main insulating layer (20) is fitted on the outer surface of the inner shield layer (21).

8. A high frequency busbar conductor structure for improved current carrying capability as claimed in claim 1, wherein: The active air supply and heat dissipation mechanism (4) consists of a support frame (22), a centrifugal fan (23), a controller (24), an L-shaped air inlet pipe (25), an air supply pipe (26), an air collector (27), a sealing cover (28), a mesh partition (29), and a filter element (30). The support frame (22) is installed at one end of the tubular busbar body (1), the centrifugal fan (23) is fixedly connected to the bottom end of the support frame (22), and the controller (24) is fixedly connected to one side of the support frame (22). The air inlet pipe (25) is connected to the air inlet of the centrifugal fan (23), the air outlet pipe (26) is connected between the air outlet of the centrifugal fan (23) and the tube-shaped busbar body (1), the air collector hood (27) is fixedly connected to the bottom end of the L-shaped air inlet pipe (25), the sealing cover (28) is threadedly connected to the bottom end of the air collector hood (27), the mesh partition (29) is fixedly connected to the inside of the sealing cover (28), and the filter element (30) is laid inside the sealing cover (28) and located at the top of the mesh partition (29).

9. A manufacturing process for realizing the high-frequency busbar conductor structure of any of the preceding claims 1 to 8, characterized in that: Includes the following steps: S1. High-purity copper is selected as raw material, and tube blanks are formed through smelting and casting processes. Subsequently, the required tube-shaped copper conductors are formed through mechanical processing such as rolling, drawing, and extrusion (3). S2. The aluminum heat sink sleeve (8), aluminum central tube (9), heat sink aluminum plate (10) and heat sink fins (11) are processed and shaped by casting, welding and other processing methods, and the aluminum nitride ceramic insulating heat-conducting sleeve (7) is nested on the outer surface of the aluminum heat sink sleeve (8), and the two are filled with thermal grease. S3. A through hole (31) is provided on the cooled tubular copper conductor (3). The through hole (31) is located at one end of the auxiliary heat dissipation component (6) installation position. S4. Using a thermal grease feeding device (32), thermal grease is squeezed onto the inner surface of the tubular copper conductor (3) to form a ring structure, which is a continuous arc shape or a continuous dot structure. S5. Use a pressing tool to press the auxiliary heat dissipation component (6) into the interior of the tubular copper conductor (3). When the auxiliary heat dissipation component (6) is covered with a ring-shaped thermal grease, the thermal grease will be subjected to extrusion pressure and adhere to the inner surface of the tubular copper conductor (3). As the auxiliary heat dissipation component (6) continues to move, the thermal grease fills the space between the auxiliary heat dissipation component (6) and the tubular copper conductor (3) to improve the thermal conductivity. S6. The PVC sheath layer (17), grounding shield layer (18), outer shield layer (19), main insulation layer (20), and inner shield layer (21) are wrapped around the outside of the tubular copper conductor (3) by co-extrusion processing. Finally, the active air supply heat dissipation mechanism (4) and exhaust pipe (5) are installed.

10. The process of manufacturing a high-frequency busbar conductor structure with enhanced current carrying capability according to claim 9, characterized in that: The thermal grease feeding device (32) consists of a combined conveying pipe (33) and a steel rope (34). The combined conveying pipe (33) consists of a rigid long pipe (35), a flexible metal pipe (36) and a rigid short pipe (37). The flexible metal pipe (36) is fixedly connected between the rigid long pipe (35) and the rigid short pipe (37). Several guide rings (38) are fixedly provided on one side of the rigid long pipe (35), the flexible metal pipe (36) and the rigid short pipe (37). The steel rope (34) passes through the guide rings (38). One end of the steel rope (34) is fixedly connected to one end of the rigid short pipe (37). The other end of the steel rope (34) is fixedly provided with a pull ring (39).

Images