A T-shaped conductor track bus system with high efficient conduction heat dissipation characteristics

Abstract

The application discloses a T-shaped conductor track bus system with high efficient conduction and heat dissipation characteristics, and relates to the technical field of power distribution bus. The inside of the integrated heat dissipation shell is provided with at least three-phase parallel arranged T-shaped conductors, high-thermal-conductivity insulation medium for directly conducting the heat generated by the T-shaped conductors is arranged between the integrated heat dissipation shell and the T-shaped conductors, and the high-thermal-conductivity insulation medium is used for directly conducting the heat received by the high-thermal-conductivity insulation medium to the integrated heat dissipation shell; in the T-shaped conductor track bus system with high efficient conduction and heat dissipation characteristics, the fixing head of the T-shaped conductor is directly coupled with the embedded slot of the shell body, the U-shaped / concave large-area coating of the high-thermal-conductivity insulation medium is matched, a solid heat conduction path from the T-shaped conductor to the shell body is established, and the thermal resistance is reduced; and the longitudinal deep groove naturally formed by the T-shaped conductor array constitutes a low-wind-resistance natural air duct.

Description

Technical Field

[0001] This invention relates to the field of power distribution bus technology, specifically a T-type conductor rail bus system with high-efficiency conduction and heat dissipation characteristics. Background Technology

[0002] With the development of modern data centers, AI computing centers and high-rise buildings, busbar trunking, as a power distribution system, needs to continuously carry large currents of thousands of amperes and undertake the critical task of efficiently and safely distributing electrical energy to various loads such as server racks and communication equipment. However, during full-load operation, the internal copper busbar temperature of traditional busbar trunking rises to 70-80K, approaching the tolerance limit of the insulation material, which seriously threatens the safe operation and service life of the system.

[0003] Currently, busbar systems on the market are mainly divided into the following two categories: Mainstream international technologies, represented by Schneider, Eaton, and Vertiv, often employ traditional "sandwich" compact structures or air-insulated structures. Their heat dissipation relies on the natural convection and radiation of the aluminum alloy casing, which is a passive cooling mode. In terms of intelligence, they focus on monitoring electrical parameters such as current, voltage, and power in the starting box and plug-in box, but have little real-time active control over the temperature rise of the busbar itself. For the North American market, these technologies have focused on optimizing the casing grounding and short-circuit strength performance under UL 857 and NEC standards. However, when facing the high-density power distribution requirements of single cabinets above 35kW, their passive cooling mode is difficult to meet the heat dissipation requirements. The intermediate phase copper busbar is tightly wrapped, and heat cannot be effectively conducted to the casing, resulting in a serious hot spot effect. For mainstream domestic technologies that closely follow the technology routes of leading foreign brands, there have been many innovations in modular quick-connect and miniaturization. For example, in terms of heat dissipation, there are irregularly shaped shells with added heat dissipation fins. However, the shape of the core conductors is still mostly the traditional rectangular flat arrangement, and the heat dissipation path still relies on the inefficient conduction chain of heat transfer from the conductor to the air gap and then to the shell.

[0004] The performance of existing technologies in real-world high-density application scenarios has gradually revealed the following shortcomings: Firstly, traditional rectangular copper busbars mainly rely on two large surfaces for heat dissipation. However, in densely packed busbars, the copper busbars in the middle phase are wrapped up, making it difficult for heat to be conducted to the outer casing. Furthermore, because the copper busbars are close together, there is a significant limitation on increasing the number of sockets in the busbar itself. Ordinary air-type busbars rely on air for heat dissipation, resulting in a larger busbar size, severe hot spot effect, lack of flexibility, and insufficient heat dissipation intensity. Secondly, when traditional guide rail busbars are subjected to short-circuit current impacts, the rectangular busbars are prone to physical deformation, insufficient electrodynamic stress, and poor dynamic stability. Furthermore, after repeated plugging and unplugging, the contact resistance of traditional plug-in box interfaces will increase, generating local high temperatures and even posing a fire hazard. Thirdly, traditional busbar support components often use a fully enclosed structure to wrap the conductor. Although this ensures the short-circuit resistance to electric stress, it severely blocks the heat dissipation surface of the conductor, resulting in a problem of strong support but weak heat dissipation.

[0005] In summary, given the limitations of existing busbar systems in conductor cross-sectional shape, heat dissipation path design, and support structure, which result in low heat dissipation efficiency, poor dynamic stability, and a prominent contradiction between support and heat dissipation, there is an urgent need to provide a busbar system that can achieve efficient conductive heat dissipation, possess excellent dynamic stability, and balance support and heat dissipation. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides a T-shaped conductor rail bus system with efficient heat conduction and dissipation characteristics. The system includes designing T-shaped conductors, filling the space between the outer shell body with a U-shaped or concave high thermal conductivity insulating medium, and arranging multiple T-shaped conductors in parallel before inserting the plug-in handle into a support clamp, thus solving the technical problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a T-shaped conductor rail bus system with high-efficiency heat conduction and dissipation characteristics, comprising an integrated heat dissipation shell, wherein at least three parallel T-shaped conductors are arranged inside the integrated heat dissipation shell, and a high thermal conductivity insulating medium is provided between the integrated heat dissipation shell and the T-shaped conductors for direct heat conduction of the heat generated by the T-shaped conductors, and for directly conducting the heat received by the high thermal conductivity insulating medium to the integrated heat dissipation shell, and dissipating it directly through the first longitudinal heat dissipation fins on the outside of the integrated heat dissipation shell. A tight covering plate is provided on the lower surface of the integrated heat dissipation shell for wrapping the bottom of the integrated heat dissipation shell and supporting the T-shaped conductors. A discontinuously distributed support clamp is provided between the T-shaped conductors and the tight covering plate, and a grounding conductor is provided on one side inside the support clamp.

[0008] Furthermore, the integrated heat dissipation shell structure includes a shell body, the inner wall of the shell body is provided with an embedded groove that matches the fixed head, the upper surface and two sides of the shell body are provided with first longitudinal heat dissipation fins, and at least one hollow reinforcing chamber is provided between the embedded groove and the first longitudinal heat dissipation fins and inside the shell body, which is used to form a thermal buffer layer while ensuring the rigidity of the profile and reducing the overall temperature difference of the shell.

[0009] Furthermore, the structure of the T-shaped conductor includes a horizontal fixed head and a vertical plug handle, and the bottom of the fixed head and the top of the plug handle are fixedly connected. The structure of the tight-fitting sealing plate includes a sealing plate body, and the lower surface of the sealing plate body is provided with a uniformly distributed second longitudinal heat dissipation fin. The sealing plate body and the second longitudinal heat dissipation fin are fixedly connected and integrally formed.

[0010] Furthermore, the cross-sectional shape of the high thermal conductivity insulating medium is U-shaped or concave, which is used to tightly cover the fixing head and form a large-area planar contact with the embedded groove to minimize the interface thermal resistance. The high thermal conductivity insulating medium is made of reinforced SMC or BMC material, and the heat distortion temperature of the high thermal conductivity insulating medium is not lower than 200℃, the thermal conductivity is not lower than 1.5 W / (m·K), and the mechanical modulus remains constant under high current rated operating temperature; The volume resistivity of the high thermal conductivity insulating medium is not less than 1×10^13 Ω·cm, the dielectric strength is not less than 20kV / mm, and the flame retardant rating reaches UL94 V-0. The U-shaped or concave structure has an enclosing angle range of 180°-270°, and the contact area between the U-shaped or concave structure and the inner groove accounts for more than 70% of the surface area of ​​the fixed head.

[0011] Furthermore, the support clamp is connected between adjacent T-shaped conductors or between the T-shaped conductor and the housing body to limit the lateral swing of the plug handle in a short-circuit state. The top of the cross section of the support clamp is comb-shaped, and the support clamp is injection molded from reinforced nylon PA66 or polycarbonate material. The heat distortion temperature of the support clamp is not lower than 150°C and the flame retardant rating reaches UL94 V-0. The spacing between the support clamps along the length of the busbar system ranges from 300 to 600 mm.

[0012] Furthermore, the outer shell body is made of 6063 aluminum alloy extruded profile, and the thermal conductivity of the outer shell body is not less than 200 W / (m·K), and the wall thickness of the outer shell body ranges from 2 to 5 mm; The density or height of the first longitudinal heat dissipation fins on the two sides of the main body of the outer shell is asymmetrically optimized according to the thermal field distribution of the large current. The height of the first longitudinal heat dissipation fins ranges from 5 to 15 mm, the thickness ranges from 1.5 to 3 mm, and the fin spacing ranges from 5 to 15 mm. In asymmetric optimization settings, the density of fins on the windward side is higher than that on the leeward side.

[0013] Furthermore, the fixed head and the embedded groove are fitted with a micro-gap or elastic compression to allow the T-shaped conductor to expand and contract freely in the axial direction with temperature changes without damaging the radial thermal contact. The gap between the micro-gap fits is in the range of 0.1-0.5 mm. The elastic clamping uses a wave spring or elastic gasket to provide a radial clamping force of 50-200N to ensure the long-term stability of the thermally conductive contact. The T-shaped conductor is made of electrolytic copper with a purity of not less than 99.9%, and the width of the fixing head ranges from 15 to 30 mm and the thickness ranges from 3 to 8 mm. The height of the plug handle ranges from 10 to 25 mm, and the thickness ranges from 3 to 6 mm. The ratio of the surface area of ​​the fixed head to the surface area of ​​the plug handle is 1:0.6-1:1.2.

[0014] Furthermore, the T-type conductors arranged in at least three parallel phases include a neutral busbar and a main busbar, wherein the main busbar is used to connect the copper busbars of the three phases for transmitting electrical energy to the entire system; The zero busbar is used to connect the busbar of the neutral line (N line), to provide a loop for three-phase unbalanced current, and to provide a voltage reference point for 220V single-phase electrical equipment; The grounding conductor is a ground busbar, used to connect the protective grounding wire (PE wire) to the earth, and to connect the exposed conductive parts of the equipment, such as the metal casing, to the earth to prevent electric shock accidents. In a busbar system, at least three parallel T-type conductors and the grounding conductor constitute the working circuit and safety protection circuit for power transmission. The working circuit is provided by the neutral busbar after the main busbar delivers electrical energy to the equipment, allowing the current to flow back to the power source, thereby forming a complete circuit. The safety protection circuit is designed so that when the equipment casing becomes energized due to a fault, the fault current will flow rapidly to the ground through the grounding conductor, or trigger the protection device to trip, thereby cutting off the power supply.

[0015] This invention provides a T-type conductor rail bus system with high-efficiency conductive heat dissipation characteristics, which has the following beneficial effects: In this T-shaped conductor track bus system with high-efficiency heat dissipation characteristics, the fixed head of the T-shaped conductor is directly coupled to the embedded slot of the outer shell, and a U-shaped / concave large-area covering of high thermal conductivity insulating medium is used to establish a solid heat conduction path from the T-shaped conductor to the outer shell, reducing thermal resistance. In addition, the longitudinal deep grooves naturally formed by the T-shaped conductor array constitute a low-resistance natural air channel. In passive heat dissipation mode, the chimney effect can be used to induce internal airflow. In active heat dissipation mode, it can serve as a reserved channel for forced convection, thereby achieving high-efficiency heat dissipation. The hollow reinforced chamber inside the main body of the shell forms a thermal buffer layer while ensuring the rigidity of the profile, reducing the overall temperature difference of the shell. It also adopts asymmetrical optimized longitudinal heat dissipation fins, and adjusts the density or height of the side fins according to the high current thermal field distribution, so that the heat dissipation resources are precisely directed to the hot spot area, which improves heat dissipation efficiency while taking into account strength. The discrete comb-shaped support clamps are fixed by the plug-in handles of the interlocking T-shaped conductors, rather than a fully enclosed structure. While ensuring the short-circuit resistance to electric stress, it minimizes the obstruction of the heat dissipation surface of the T-shaped conductors. Furthermore, the support clamps are spaced apart along the length, which ensures the continuity of mechanical support and leaves sufficient space for heat dissipation. The micro-gap fit or elastic clamping structure between the T-shaped conductor fixing part and the embedded slot allows the conductor to freely expand and contract axially without damaging the radial thermal contact. This avoids reliability problems such as increased contact thermal resistance and fatigue cracking of the insulating medium caused by thermal cycling, and extends the service life of the bus system. Combined with the integrated aluminum alloy extruded profile shell, it integrates the embedded slot, hollow reinforced cavity and heat dissipation fins, reducing the number of parts and facilitating extrusion molding and automated assembly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the complete structure of the T-type conductor track busbar system of the present invention; Figure 2 This is an exploded top view of the T-type conductor track busbar system of the present invention; Figure 3 This is an exploded top-side view of the T-type conductor track busbar system of the present invention; Figure 4 This is a schematic diagram of the cross-sectional structure of the T-type conductor track bus system of the present invention.

[0017] The attached figures are labeled as follows: 1. Integrated heat dissipation shell; 101. Shell body; 102. Hollow reinforced chamber; 103. Embedded slot; 104. First longitudinal heat dissipation fin; 2. High thermal conductivity insulating medium; 3. T-type conductor; 301. Fixed head; 302. Plug handle; 31. Neutral busbar; 32. Main busbar; 4. Tightly wrapped sealing plate; 401. Sealing plate body; 402. Second longitudinal heat dissipation fins; 5. Supporting clamps; 6. Grounding conductor. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1 Please see Figure 1-4 This invention provides a T-type conductor rail bus system with high-efficiency conduction and heat dissipation characteristics, including an integrated heat dissipation shell 1. The integrated heat dissipation shell 1 is provided with at least three parallel T-type conductors 3. A high thermal conductivity insulating medium 2 is provided between the integrated heat dissipation shell 1 and the T-type conductors 3 to directly conduct the heat generated by the T-type conductors 3. The heat received by the high thermal conductivity insulating medium 2 is then directly conducted to the integrated heat dissipation shell 1 and dissipated directly through the first longitudinal heat dissipation fins 104 on the outside of the integrated heat dissipation shell 1. The lower surface of the integrated heat dissipation shell 1 is provided with a tight-fitting sealing plate 4 for wrapping the bottom of the integrated heat dissipation shell 1 and supporting the T-type conductors 3. A discontinuously distributed support clamp 5 is provided between the T-type conductors 3 and the tight-fitting sealing plate 4. A grounding conductor 6 is provided on one side inside the support clamp 5.

[0020] In a preferred embodiment, the integrated heat dissipation housing 1 includes a housing body 101. The inner wall of the housing body 101 is provided with an embedded groove 103 that matches the fixing head 301. The upper surface and two sides of the housing body 101 are provided with first longitudinal heat dissipation fins 104. At least one hollow reinforcing chamber 102 is provided between the embedded groove 103 and the first longitudinal heat dissipation fins 104 and inside the housing body 101. This chamber is used to form a thermal buffer layer while ensuring the rigidity of the profile and reducing the overall temperature difference of the housing.

[0021] In a preferred embodiment, the structure of the T-shaped conductor 3 includes a transverse fixed head 301 and a longitudinal plug handle 302, and the bottom of the fixed head 301 and the top of the plug handle 302 are fixedly connected. The structure of the tight-covering sealing plate 4 includes a sealing plate body 401, and a uniformly distributed second longitudinal heat dissipation fin 402 is provided on the lower surface of the sealing plate body 401. The sealing plate body 401 and the second longitudinal heat dissipation fin 402 are fixedly connected and integrally formed.

[0022] In addition, regarding the T-shaped conductor 3 and the solid heat conduction path: the T-shaped conductor 3 adopts a "head + handle" cross-sectional design. Its horizontal fixed head 301 is embedded in the inner groove 103 of the inner wall of the outer shell body 101. The space between the two is filled with a U-shaped or concave high thermal conductivity insulating medium 2. When a large current passes through the T-shaped conductor 3 and generates Joule heat, the heat is first conducted from the inside of the T-shaped conductor 3 to the surface of the fixed head 301. Since the fixed head 301 and the high thermal conductivity insulating medium 2, and the high thermal conductivity insulating medium 2 and the outer shell body 101 are all in large-area planar contact, a low thermal resistance solid heat conduction path is formed. Therefore, the heat does not need to pass through an inefficient air gap, but is directly transferred to the outer shell body 101 through solid conduction. The first longitudinal heat dissipation fins 104 on the outside of the outer shell body 101 increase the heat exchange area with the air in the computer room. The heat is dissipated to the environment through convection and radiation. Natural convection and chimney effect in longitudinal air duct: After multiple T-shaped conductors 3 are arranged in parallel, wide and regular longitudinal geometric deep grooves are naturally formed between their plug handles 302. These deep grooves are connected in the length direction of the busbar groove, forming a natural low wind resistance air duct. In passive heat dissipation mode, the air in the deep groove is heated and its density decreases, and it moves upward, forming a "chimney effect", which induces cold air to be replenished from the bottom, realizing natural convection heat transfer. Multi-chamber reinforced structure and thermal buffer: The hollow reinforced chamber 102 inside the outer shell body 101 serves as a structural reinforcing rib, improving the bending and torsional stiffness of the aluminum alloy profile; on the other hand, the hollow reinforced chamber 102 forms a thermal buffer layer between the fixed head 301 and the external first longitudinal heat dissipation fin 104, mitigating the instantaneous impact of thermal shock on the outer shell body 101 and reducing the overall temperature difference of the outer shell body 101, thus avoiding thermal stress deformation caused by local overheating; Dynamic stability assurance of discrete support clamps 5: At the bottom opening of the busbar trunking, discontinuously distributed comb-shaped support clamps 5 are connected between the insertion handles 302 of adjacent T-shaped conductors 3 or between the T-shaped conductors 3 and the outer shell 101. When a short circuit fault occurs in the system, the huge short circuit current generates strong electrodynamic stress, causing the insertion handles 302 of the T-shaped conductors 3 to tend to swing laterally. The support clamps 5 limit the lateral displacement of the T-shaped conductors 3 by engaging the insertion handles 302 of the T-shaped conductors 3, preventing physical deformation or phase-to-phase short circuits of the T-shaped conductors 3. At the same time, since the support clamps 5 adopt a comb-shaped structure rather than a fully enclosed structure, the obstruction of the heat dissipation surface of the T-shaped conductors 3 is minimized, achieving a balance between strong support and efficient heat dissipation. Thermal expansion compensation mechanism: The fixed head 301 of the T-shaped conductor 3 and the embedded groove 103 of the outer shell body 101 adopt a micro-gap fit or elastic clamping structure. When the T-shaped conductor 3 undergoes axial thermal expansion due to temperature rise, the micro-gap allows the T-shaped conductor 3 to freely expand and contract along the length direction; the elastic clamping element ensures that the radial thermal contact is not affected by thermal expansion and always maintains a stable clamping force, avoiding the increase in contact thermal resistance caused by thermal cycling.

[0023] Example 2 Please see Figure 1-4 The present invention provides a T-type conductor track bus system with high-efficiency conduction and heat dissipation characteristics. This embodiment is a further disclosure of the high thermal conductivity insulating medium 2 in embodiment 1. The cross-sectional shape of the high thermal conductivity insulating medium 2 is U-shaped or concave, which is used to tightly cover and fix the head 301 and form a large area planar contact with the embedded groove 103 to minimize the interface thermal resistance. The high thermal conductivity insulating medium 2 is made of reinforced SMC or BMC material, and the heat distortion temperature of the high thermal conductivity insulating medium 2 is not lower than 200℃, the thermal conductivity is not lower than 1.5 W / (m·K), and the mechanical modulus remains constant under the high current rated operating temperature; The volume resistivity of the high thermal conductivity insulating medium 2 is not less than 1×10^13 Ω·cm, the dielectric strength is not less than 20 kV / mm, and the flame retardant rating reaches UL94 V-0; The U-shaped or concave structure has a coverage angle range of 180°-270°, and the contact area between the U-shaped or concave structure and the inner groove 103 accounts for more than 70% of the surface area of ​​the fixed head 301.

[0024] Example 3 Please see Figure 1-4 The present invention provides a T-type conductor rail bus system with high-efficiency conduction and heat dissipation characteristics. This embodiment is a further disclosure of the support clamp 5 in embodiment 1. The support clamp 5 is connected between adjacent T-type conductors 3 or between the T-type conductor 3 and the outer shell body 101, and is used to limit the lateral swing of the plug handle 302 in the short circuit state. The top of the cross section of the support clamp 5 is comb-shaped, and the support clamp 5 is injection molded from reinforced nylon PA66 or polycarbonate material. The heat distortion temperature of the support clamp 5 is not lower than 150℃ and the flame retardant rating reaches UL94 V-0. The spacing between the support clamps 5 along the length of the busbar system ranges from 300 to 600 mm.

[0025] Example 4 Please see Figure 1-4This invention provides a T-type conductor rail bus system with high-efficiency conduction and heat dissipation characteristics. This embodiment further discloses the structure of the integrated heat dissipation shell 1 in Embodiment 1. The shell body 101 is made of 6063 aluminum alloy extruded profile, and the thermal conductivity of the shell body 101 is not less than 200 W / (m·K). The wall thickness of the shell body 101 is in the range of 2-5mm. The density or height of the first longitudinal heat dissipation fins 104 on the two sides of the outer shell 101 is asymmetrically optimized according to the thermal field distribution of the high current. The height of the first longitudinal heat dissipation fins 104 ranges from 5 to 15 mm, the thickness ranges from 1.5 to 3 mm, and the fin spacing ranges from 5 to 15 mm. In asymmetric optimization settings, the density of fins on the windward side is higher than that on the leeward side.

[0026] Example 5 Please see Figure 1-4 This invention provides a T-type conductor rail bus system with high-efficiency conduction and heat dissipation characteristics. This embodiment is a further disclosure of the T-type conductor 3 in embodiment 1. The T-type conductor 3 is made of electrolytic copper with a purity of not less than 99.9%. The width of the fixing head 301 ranges from 15 to 30 mm and the thickness ranges from 3 to 8 mm. The fixed head 301 and the embedded groove 103 are fitted with a micro-gap or elastic clamping to allow the T-shaped conductor 3 to expand and contract freely in the axial direction with temperature changes without damaging the radial thermal contact. The gap between the micro-gap fits is in the range of 0.1-0.5 mm. The elastic clamping uses wave springs or elastic washers to provide a radial clamping force of 50-200N to ensure the long-term stability of the thermally conductive contact; The height of the plug handle 302 ranges from 10 to 25 mm, and the thickness ranges from 3 to 6 mm. The ratio of the surface area of ​​the fixed head 301 to the surface area of ​​the insertion handle 302 is 1:0.6-1:1.2.

[0027] Example 6 Please see Figure 1-4 The present invention provides a T-type conductor rail busbar system with high-efficiency conduction and heat dissipation characteristics. This embodiment is a further disclosure of the T-type conductor 3 and grounding conductor 6 in embodiment 1. The T-type conductor 3, which is arranged in parallel with at least three phases, includes a neutral busbar 31 and a main busbar 32. The main busbar 32 is used to connect the copper busbars of the three phases and to transmit electrical energy to the entire system. Neutral bus 31 is a busbar used to connect the neutral line N, to provide a loop for three-phase unbalanced current, and to provide a voltage reference point for 220V single-phase electrical equipment; Grounding conductor 6 is a ground busbar, used to connect the protective grounding wire PE wire, and is used to connect the exposed conductive parts of the equipment, such as the metal casing, to the earth to prevent electric shock accidents. In a busbar system, at least three parallel T-type conductors 3 and grounding conductors 6 constitute the working circuit and safety protection circuit for power transmission. The working circuit is provided by the neutral busbar 31 after the main busbar 32 delivers electrical energy to the equipment, allowing the current to flow back to the power source, thus forming a complete circuit. The safety protection circuit is designed so that when the equipment casing becomes energized due to a fault, the fault current will flow rapidly to the ground through the grounding conductor 6, or trigger the protection device to trip, thereby cutting off the power supply.

[0028] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A T-type conductor rail busbar system with high-efficiency heat conduction and heat dissipation characteristics, comprising an integrated heat dissipation shell (1), wherein at least three parallel T-type conductors (3) are arranged inside the integrated heat dissipation shell (1), and a highly thermally conductive insulating medium (2) is provided between the integrated heat dissipation shell (1) and the T-type conductors (3) for direct heat conduction of the heat generated by the T-type conductors (3). A tight-fitting sealing plate (4) for wrapping the bottom of the integrated heat dissipation shell (1) and supporting the T-type conductors (3) is provided on the lower surface of the integrated heat dissipation shell (1), and a non-continuously distributed support clamp (5) is provided between the T-type conductors (3) and the tight-fitting sealing plate (4). A grounding conductor (6) is provided on one side inside the support clamp (5).

2. The T-type conductor rail busbar system with high-efficiency conductive heat dissipation characteristics according to claim 1, characterized in that: The integrated heat dissipation shell (1) includes a shell body (101), the inner wall of the shell body (101) is provided with an embedded groove (103) that matches the fixed head (301), the upper surface and two sides of the shell body (101) are provided with first longitudinal heat dissipation fins (104), and at least one hollow reinforced chamber (102) is provided between the embedded groove (103) and the first longitudinal heat dissipation fins (104) and inside the shell body (101).

3. The T-type conductor rail busbar system with high-efficiency conductive heat dissipation characteristics according to claim 2, characterized in that: The structure of the T-shaped conductor (3) includes a horizontal fixed head (301) and a vertical plug handle (302), and the bottom of the fixed head (301) and the top of the plug handle (302) are fixedly connected. The structure of the tight-fitting sealing plate (4) includes a sealing plate body (401), and the lower surface of the sealing plate body (401) is provided with a uniformly distributed second longitudinal heat dissipation fin (402). The sealing plate body (401) and the second longitudinal heat dissipation fin (402) are fixedly connected and integrally formed.

4. A T-type conductor rail busbar system with high-efficiency conductive heat dissipation characteristics according to claim 3, characterized in that: The cross-sectional shape of the high thermal conductivity insulating medium (2) is U-shaped or concave, which is used to tightly cover the fixed head (301) and form a large area planar contact with the embedded groove (103) to minimize the interface thermal resistance. The high thermal conductivity insulating medium (2) is made of reinforced SMC or BMC material, and the heat distortion temperature of the high thermal conductivity insulating medium (2) is not lower than 200℃, the thermal conductivity is not lower than 1.5 W / (m·K), and the mechanical modulus remains constant under the rated operating temperature of high current. The high thermal conductivity insulating medium (2) has a volume resistivity of not less than 1×10^13 Ω·cm, a dielectric strength of not less than 20kV / mm, and a flame retardant rating of UL94 V-0. The U-shaped or concave structure has a coverage angle range of 180°-270°, and the contact area with the inner groove (103) accounts for more than 70% of the surface area of ​​the fixed head (301).

5. A T-type conductor rail busbar system with high-efficiency conductive heat dissipation characteristics according to claim 3, characterized in that: The support clamp (5) is connected between adjacent T-shaped conductors (3) or between the T-shaped conductor (3) and the outer shell body (101) to limit the lateral swing of the plug handle (302) in a short-circuit state; The top of the cross section of the support clamp (5) is comb-shaped, and the support clamp (5) is injection molded from reinforced nylon PA66 or polycarbonate material. The heat distortion temperature of the support clamp (5) is not lower than 150°C and the flame retardant rating reaches UL94 V-0. The spacing between the support clamps (5) along the length of the busbar system is 300-600 mm.

6. A T-type conductor rail busbar system with high-efficiency conductive heat dissipation characteristics according to claim 3, characterized in that: The outer shell body (101) is made of 6063 aluminum alloy extruded profile, and the thermal conductivity of the outer shell body (101) is not less than 200 W / (m·K), and the wall thickness of the outer shell body (101) is in the range of 2-5mm; The density or height of the first longitudinal heat dissipation fins (104) on the two sides of the outer shell body (101) is asymmetrically optimized according to the thermal field distribution of the large current. The height of the first longitudinal heat dissipation fins (104) ranges from 5 to 15 mm, the thickness ranges from 1.5 to 3 mm, and the fin spacing ranges from 5 to 15 mm. In asymmetric optimization settings, the density of fins on the windward side is higher than that on the leeward side.

7. A T-type conductor rail busbar system with high-efficiency conductive heat dissipation characteristics according to claim 3, characterized in that: The fixed head (301) and the embedded groove (103) are fitted with a micro-gap or elastic compression to allow the T-shaped conductor (3) to freely expand and contract in the axial direction with temperature changes without damaging the radial thermal contact. The gap between the micro-gap fits is in the range of 0.1-0.5 mm. The elastic clamping uses a wave spring or elastic gasket to provide a radial clamping force of 50-200N to ensure the long-term stability of the thermally conductive contact. The T-shaped conductor (3) is made of electrolytic copper with a purity of not less than 99.9%, and the width of the fixing head (301) is 15-30 mm and the thickness is 3-8 mm. The height of the plug handle (302) ranges from 10 to 25 mm, and the thickness ranges from 3 to 6 mm. The ratio of the surface area of ​​the fixed head (301) to the surface area of ​​the plug handle (302) is 1:0.6-1:1.

2.

8. A T-type conductor rail busbar system with high-efficiency conductive heat dissipation characteristics according to claim 3, characterized in that: The T-type conductor (3) arranged in at least three parallel phases includes a zero busbar (31) and a main busbar (32), wherein the main busbar (32) is used to connect the copper busbars of the three phases; The zero bus (31) is used to connect the busbar of the neutral line (N line); The grounding conductor (6) is a ground busbar used to connect the protective grounding wire (PE wire) busbar.

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