Busbar connecting joint and waterproof busbar

Abstract

The utility model relates to the field of electric power bus system especially a bus connecting joint and waterproof bus, including side sealing plate, its opposite is located bus main body end part's both sides, cover plate, it is located side sealing plate's upper and lower end face, and is connected with bus main body, wherein, side sealing plate, cover plate, with bus main body between the common definition pours cavity, the utility model discloses the pouring cavity of surrounding bus conductor connecting part is constructed and implements integral pouring, fundamentally solved the technical problem that traditional bus joint depends on elastic sealing piece and is easy to age, and the sealing is not complete, realized the integrated permanent sealing of joint part and bus main body same grade, the solid sealing body of solidification forms not only gives joint excellent waterproof performance, still adapts the flexible pouring design of horizontal and vertical installation, ensures under various working conditions can form complete dense insulating waterproof layer, thereby achieved bus connecting joint long -term maintenance -free, high safe and reliable operation's effect.

Description

Technical Field

[0001] This utility model relates to the field of power busbar systems, and in particular to a busbar connection joint and a waterproof busbar. Background Technology

[0002] Busbar systems, as key components of modern power distribution, are widely used in high-rise buildings, industrial plants, and data centers. Among them, busbar connection joints are the most structurally complex and reliability-critical parts of the entire system, and also the weakest link in terms of waterproofing and sealing.

[0003] Traditional busbar joints typically use sealing rings or localized application of sealant for waterproofing. These methods have inherent drawbacks: rubber sealing rings are prone to aging, hardening, and even cracking after prolonged use, losing their elastic sealing ability; manual application of sealant is difficult to ensure continuous and uniform application, easily leading to quality issues such as porosity and incomplete sealing. Especially in humid environments, under conditions of temperature fluctuations, or mechanical vibration, these traditional sealing methods are more likely to fail, allowing moisture to penetrate the joint, causing oxidation of the busbar conductor, decreased insulation, and even short-circuit faults, posing a serious threat to the safe and stable operation of the power supply system.

[0004] Therefore, there is an urgent need for a waterproof solution that can achieve a complete and permanent seal at the joint and adapt to complex application environments. Utility Model Content

[0005] In this section, as well as in the abstract and title of this application, some simplifications or omissions may be made to avoid obscuring the purpose of this section, the abstract, and the title of this application. Such simplifications or omissions shall not be used to limit the scope of this utility model.

[0006] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a busbar connection connector and a waterproof busbar.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a busbar connection joint, including a side sealing plate, which is disposed on both sides of the end of the busbar body; a cover plate, which is disposed on the upper and lower end faces of the side sealing plate and connected to the busbar body; wherein the side sealing plate, the cover plate, and the busbar body together define a casting cavity.

[0008] As a preferred embodiment of the busbar connection joint of this utility model, wherein: any of the cover plates is provided with a horizontal pouring port that communicates with the pouring cavity.

[0009] As a preferred embodiment of the busbar connection joint of this utility model, wherein: the end of any of the cover plates is provided with a vertical pouring port that protrudes outward from the pouring cavity and communicates with the pouring cavity.

[0010] As a preferred embodiment of the busbar connection joint of this utility model, the busbar body includes a casting block and a side end baffle; the casting block is located at the end of the busbar body; the side end baffle is connected to the side sealing plate, located at the end of the busbar body, and positioned opposite to both sides of the casting block; wherein the middle part of the side sealing plate protrudes outward from the casting cavity, and its two ends form horizontal surfaces connected to the side end baffle.

[0011] As a preferred embodiment of the busbar connection connector of this utility model, the busbar body further includes two shell covers arranged opposite to each other. A rivet nut is provided through the shell cover and the side end baffle. A connection hole corresponding to the rivet nut is provided on the cover plate and the side sealing plate. A screw that is connected to the rivet nut is provided through the connection hole on the cover plate and the side sealing plate.

[0012] As a preferred embodiment of the busbar connection connector of this utility model, a side-end waterproof foam is provided between the side-end baffle and the side-end sealing plate, and a cover-end waterproof foam that fits the inner wall of the sealing plate is covered on the side-end sealing plate; wherein, the shape of the cover-end waterproof foam matches the shape of the sealing plate, and the edge of the sealing plate is bent inward to form a flange that covers the cover-end waterproof foam.

[0013] As a preferred embodiment of the busbar connection connector of this utility model, both the side waterproof foam and the cover waterproof foam are provided with positioning holes corresponding to the rivet nut; wherein the diameter of the positioning hole is slightly larger than the diameter of the rivet nut.

[0014] To achieve the above objectives, the present invention also adopts the following technical solution: a waterproof busbar, including a busbar connection joint, and at least two busbar bodies, the two busbar bodies being coaxially opposite each other and spaced apart; a connecting component, which is connected between the two busbar bodies and located in the casting cavity; wherein, a plurality of busbar conductors penetrating the casting block are densely arranged in the busbar body, and a gap is formed between the ends of two adjacent busbar conductors.

[0015] As a preferred embodiment of the waterproof busbar of this utility model, the main body of the busbar further includes mounting lugs disposed at opposite ends of the casting block and located inside the casting cavity.

[0016] As a preferred embodiment of the waterproof busbar of this utility model, the connecting assembly includes an insulating partition disposed between two adjacent busbar conductors, and clamping plates disposed opposite to the two mounting lugs at both ends. A square nut is provided on one of the clamping plates, and a torque bolt that penetrates the insulating partition and is connected to the square nut is provided on the other clamping plate. The insulating partition is provided with a current-connecting conductor that is in contact with the bus conductor, and the torque bolt is covered with an insulating sleeve that is slidably connected to the insulating partition.

[0017] The beneficial effects of this utility model are as follows: By constructing a casting cavity around the busbar conductor connection part and implementing integral casting, this utility model fundamentally solves the technical problems of traditional busbar joints relying on elastic seals that are prone to aging and incomplete sealing. It achieves an integrated permanent seal of the same level as the busbar body at the joint part. The solid seal formed by curing not only gives the joint excellent waterproof performance, but also significantly enhances its structural strength and vibration resistance. At the same time, the flexible casting design that is compatible with horizontal and vertical installation ensures that a complete and dense insulating and waterproof layer can be formed under various working conditions, thereby achieving the effect of long-term maintenance-free and highly safe and reliable operation of the busbar connection joint. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a structural schematic diagram of the busbar body, cover plate, and side sealing plate of this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the casting cavity of this utility model.

[0021] Figure 3 This is an exploded view of the present invention in its horizontal installation state.

[0022] Figure 4 This is a schematic diagram of the structure of this utility model in its vertical installation state.

[0023] Figure 5 This is an exploded view of the present invention in its vertical installation state.

[0024] Figure 6 This utility model Figure 3 Enlarged diagram of point A in the middle.

[0025] Figure 7 This is a schematic diagram of the main structure of the busbar of this utility model.

[0026] Figure 8 This is a schematic diagram showing the connection between the connection component and the bus conductor of this utility model.

[0027] Figure 9 This is an exploded view of the connecting component of this utility model.

[0028] Figure 10 This is a schematic diagram of the structure of the conductor of this utility model. Detailed Implementation

[0029] To enable those skilled in the art to better understand this utility model, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0030] The terminology used in this invention refers to those general terms currently widely used in the art in consideration of the functionality of this invention; however, these terms may vary according to the intent, precedent, or new technology of those skilled in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of this invention. Therefore, the terminology used in this specification should not be construed as simple names, but rather based on the meaning of the terms and the overall description of this invention.

[0031] Reference Figures 1-2 This embodiment provides a busbar connection joint, including a side sealing plate 201, which is disposed on both sides of the end of the busbar body 100; and a cover plate 202, which is disposed on the upper and lower end faces of the side sealing plate 201 and connected to the busbar body 100; wherein the side sealing plate 201, the cover plate 202, and the busbar body 100 together define a casting cavity C.

[0032] The casting cavity C is a sealed space formed by the side sealing plate 201, the cover plate 202, and the ends of the two busbar bodies 100, which completely covers the connection part of the busbar conductor 104.

[0033] Specifically, the waterproofing material injected into the cavity C is a thermally conductive potting silicone casting refractory. The casting material is described as follows: This thermally conductive potting silicone casting refractory is a mixture of thermally conductive potting silicone and refractory filler. The thermally conductive potting silicone has excellent high and low temperature resistance, good aging resistance, and does not shrink during curing. After curing, it maintains rubber elasticity over a wide temperature range and exhibits excellent insulation performance. Because the potting silicone alone has very good fluidity, in actual operation, if some gaps are not well controlled during the assembly and riveting of the busbar body 100, the injected casting refractory may overflow, which is unavoidable. Therefore, in actual production, we mix the thermally conductive potting silicone with a certain proportion of refractory filler. This does not affect the overall insulation and waterproofing performance, but also changes the fluid state, allowing the properly proportioned casting refractory to be poured densely inside and at the ends of the busbar without overflowing.

[0034] After the castable material has cured, it completely covers the casting cavity C (including the part of the casting cavity C that belongs to the busbar body 100 joint connection), forming a seamless, integrated solid seal.

[0035] Reference Figures 3-6 This embodiment provides a busbar connection connector, including a horizontal pouring port 203 on any cover plate 202 that communicates with the pouring cavity C.

[0036] The horizontal pouring port 203 is typically located on the flat surface of the cover plate 202, with its axis in a horizontal direction. It is mainly suitable for situations where the busbar body 100 is installed horizontally, facilitating operation and ensuring uniform distribution of the refractory material within the cavity.

[0037] Furthermore, the end of any cover plate 202 is provided with a vertical pouring port 204 that protrudes outward from the pouring cavity C and is connected to the pouring cavity C.

[0038] The vertical pouring port 204 extends upward in a tubular or funnel shape, specifically designed for vertical busbar installation. When the busbar is installed vertically, pouring through this upward-facing pouring port ensures that the refractory material naturally fills all parts of the cavity under gravity.

[0039] Furthermore, the busbar body 100 includes a casting block 101 and a side end baffle 102; the casting block 101 is located at the end of the busbar body 100; the side end baffle 102 is connected to the side sealing plate 201, located at the end of the busbar body 100, and positioned opposite each other on both sides of the casting block 101; wherein, the middle part of the side sealing plate 201 protrudes outward from the casting cavity C, and its two ends form horizontal surfaces connected to the side end baffle 102.

[0040] The casting block 101 is located at the end of the busbar body 100, and the side end baffles 102 are disposed at both ends of the casting block 101 and welded to the shell of the busbar body 100, providing an installation base for the side sealing plate 201. The middle part of the side sealing plate 201 protrudes outward from the casting cavity C, forming an arc-shaped or trapezoidal reinforcing structure, and its two ends remain horizontal, forming a horizontal surface connected to the side end baffles 102.

[0041] Specifically, the material of the casting block 101 is the same as the waterproof material poured into the casting cavity C.

[0042] Preferably, the side sealing plate 201 can also be set in a flat state. However, since the bus conductors 104 in the two sets of bus body 100 are electrically connected through the connecting component 300 in the casting cavity C, and the two ends of the connection are close to the side sealing plate 201, the connection parts are prevented from being too close to or in contact with the side sealing plate 201.

[0043] If the electrical connection is too close to the inner surface of the side sealing plate 201, the following problems may occur: 1. The refractory material is difficult to fill and flow fully, forming casting dead corners or air bubbles, affecting the integrity and density of the sealing layer; 2. The thickness of the cured insulation layer is insufficient, failing to meet the insulation strength and creepage distance required by the design, posing an electrical safety hazard.

[0044] By protruding the middle part of the side sealing plate 201 outward, and by protruding the middle part of the side sealing plate 201 outward, sufficient casting space is provided between the component that makes electrical connection to the bus conductor 104 and the side sealing plate 201. This effectively increases the three-dimensional operating space around the connection part, ensuring that the casting material can completely cover all electrical connection points and form a uniform and sufficiently thick insulating protective layer. Thus, the long-term waterproof reliability and electrical safety of the bus body 100 joint are jointly guaranteed at both the structural design and material application levels.

[0045] Furthermore, the busbar body 100 also includes two shell covers 103 arranged opposite to each other. A rivet nut 205 is provided through the shell cover 103 and the side end baffle 102. A connecting hole 206 corresponding to the rivet nut 205 is provided on the cover plate 202 and the side sealing plate 201. A screw 207 that is connected to the rivet nut 205 is provided through the connecting hole 206 on the cover plate 202 and the side sealing plate 201.

[0046] The two housings are respectively located at the upper and lower ends of the busbar body 100, and rivet nuts 205 are installed through the housing cover 103 and the side end baffle 102. Correspondingly, the cover plate 202 and the side sealing plate 201 are provided with connecting holes 206 corresponding to the rivet nuts 205, and a reliable connection is achieved by screws 207.

[0047] Specifically, the position of the connecting hole 206 on the side sealing plate 201 corresponds to the position of the rivet nut 205 on the side end baffle 102, and the position of the connecting hole 206 on the cover plate 202 corresponds to the position of the rivet nut 205 on the shell cover 103. Furthermore, there are several rivet nuts 205, connecting holes 206, and screws 207.

[0048] Furthermore, a side-end waterproof foam 208 is provided between the side end baffle 102 and the side sealing plate 201, and a cover-end waterproof foam 209 that fits the inner wall of the cover plate 202 is covered on the side sealing plate 201; wherein, the shape of the cover-end waterproof foam 209 matches the shape of the cover plate 202, and the edge of the cover plate 202 is bent inward to form a flange 202a that covers the cover-end waterproof foam 209.

[0049] The waterproof foam 208 at the side end can enhance the waterproof effect and sealing performance at the connection between the side end baffle 102 and the side sealing plate 201, and the waterproof foam 209 at the cover end can enhance the waterproof effect and sealing performance at the connection between the shell cover 103, the side end baffle 102 and the cover plate 202, so that the connection part of the two sets of busbar bodies 100 forms a completely sealed casting space with a sufficiently good waterproof effect.

[0050] The shape of the waterproof foam 209 at the cap end precisely matches the contact surface shape of the cover plate 202 to ensure complete coverage. The edge of the cover plate 202 is bent inward to form a flange 202a that covers the waterproof foam 209 at the cap end, thereby fixing the waterproof foam in its working position. The flange 202a not only prevents the foam from shifting, but also enhances the sealing performance and the mechanical strength of the structure.

[0051] Furthermore, both the side waterproof foam 208 and the cover waterproof foam 209 are provided with positioning holes 210 corresponding to the rivet nut 205; wherein, the diameter of the positioning hole 210 is slightly larger than the diameter of the rivet nut 205.

[0052] The purpose of setting the diameter of the positioning hole 210 to be slightly larger than that of the rivet nut 205 is twofold: firstly, to facilitate alignment during installation and improve assembly efficiency; and secondly, to provide a certain margin of error for the installation of the positioning hole 210 and the rivet nut 205.

[0053] It should be noted that when the main body 100 of the busbar is in a vertical installation state, a vertical pouring port 204 is used when pouring waterproof material. At this time, the end of the waterproof foam 209 connected to the cover plate 202 facing the vertical pouring port 204 is set to be open, so that the pouring material can directly enter the pouring cavity C from the vertical pouring port 204.

[0054] Reference Figures 7-10 This embodiment provides a waterproof busbar, including a busbar connection joint, and at least two busbar bodies 100, which are coaxially opposite each other and spaced apart; a connection component 300, which is connected between the two busbar bodies 100 and located in the casting cavity C; wherein, a plurality of busbar conductors 104 penetrating the casting block 101 are densely arranged in the busbar body 100, and a gap is formed between the ends of two adjacent busbar conductors 104.

[0055] Furthermore, the busbar body 100 also includes mounting lugs 105 located at both ends of the casting block 101 and inside the casting cavity C.

[0056] By installing the side lug 105 and connecting it to the connecting component 300, the electrical connection system is integrated inside the waterproof structure (i.e., in the casting cavity C), achieving a unified connection and sealing.

[0057] The bus conductors 104 inside the bus body 100 are arranged in a dense manner. This structure saves space and facilitates heat dissipation. A precisely controlled gap is formed between the ends of two adjacent bus conductors 104. This gap provides the necessary operating space for the installation of the connection assembly 300 and ensures that there is sufficient insulation distance between the ends of the conductors to prevent electrical faults between conductors with the same or different potentials.

[0058] Furthermore, the connecting assembly 300 includes an insulating partition 301 disposed between two adjacent bus conductors 104, and clamping plates 302 disposed at opposite ends of two mounting lugs 105. A square nut 303 is provided on one clamping plate 302, and a torque bolt 304 is provided on the other clamping plate 302, which penetrates the insulating partition 301 and is connected to the square nut 303. The insulating partition 301 is provided with a current-connecting conductor 301a that is in contact with the bus conductors 104, and an insulating sleeve 305 that is slidably connected to the insulating partition 301 is sleeved on the outside of the torque bolt 304.

[0059] In actual installation, the operator first places the insulating partition 301 between adjacent busbar conductors 104, and then places the clamping plates 302 on both sides of the mounting lugs 105. By rotating the torque bolts 304, they pass through the insulating partitions 301 and are threadedly connected to the opposite square nuts 303. As the torque bolts 304 are continuously tightened, the clamping plates 302 on both sides generate opposing clamping forces, ensuring a uniform distribution of connection pressure.

[0060] Specifically, the current-connecting conductor 301a is made of a copper alloy material with high conductivity, and its surface is silver-plated to ensure excellent conductivity and oxidation resistance.

[0061] An insulating sleeve 305 is fitted on the outside of the torque bolt 304 and is slidably connected to the insulating partition 301.

[0062] Specifically, the functions of the insulating sleeve 305 are as follows: 1. The insulating sleeve 305 completely isolates the torque bolt 304 from the current-connected conductor 301a, preventing current from forming a short circuit through the bolt; 2. The sliding connection design allows the bolt to rotate freely during tightening while the insulating sleeve 305 remains relatively stationary, avoiding damage to the insulating material due to rotational friction; 3. The insulating sleeve 305 also serves a positioning function, ensuring that the bolt is always in the correct installation position.

[0063] When connecting two busbar sections 100, first align the ends of the busbar conductors 104, then install the connecting assembly 300. Tighten the torque bolts 304 to the specified torque value using a torque wrench to establish a reliable electrical connection between the energized conductor 301a and the busbar conductor 104. This connection method not only ensures excellent conductivity but also provides stable mechanical holding force, resisting loosening caused by electromagnetic forces or external vibrations. The entire connection process is simple and reliable, and all connecting components are within the protection range of the casting cavity C, ultimately being completely encapsulated by insulating and waterproof casting material, forming a permanent seal for protection.

[0064] During use, the two busbar bodies 100 are coaxially aligned and spaced apart. The corresponding busbar conductors 104 of the two busbar bodies 100 are electrically connected using the connecting assembly 300. Specifically, this includes: setting an insulating partition 301 between two adjacent busbar conductors 104; installing clamping plates 302 at both ends of the mounting lugs 105; and achieving the electrical connection of the busbar conductors 104 in the two busbar bodies 100 through the cooperation of torque bolts 304 and square nuts 303 that pass through the insulating partition 301 and clamping plates 302.

[0065] During use, connecting the two busbar bodies 100 and waterproofing the joint requires multiple steps, as follows: First, align the two busbar bodies 100 coaxially and maintain an appropriate gap, ensuring the conductor ends are aligned. Then, use the connecting assembly 300 to electrically connect the busbar conductors 104 in the two sets of busbar bodies 100. Specifically, this involves precisely installing insulating partitions 301 between adjacent conductors, ensuring the energized conductors 301a on the insulating partitions 301 are in full contact with the conductor end faces. Next, install clamping plates 302 at both ends of the mounting lugs 105, and use a torque wrench to tighten the torque bolts 304 that penetrate the insulating partitions 301 and clamping plates 302 to the specified torque, ensuring reliable engagement with the opposite square nuts 303. After connection, measure the contact resistance to confirm the connection quality meets standard requirements.

[0066] A sealing connection is performed at the end of the busbar body 100 after electrical connection. First, the side-end waterproof foam 208 is accurately installed on the mating surface of the side end baffle 102 and the side sealing plate 201, ensuring that the positioning holes 210 on the foam are aligned with the rivet nuts 205. Then, the side sealing plate 201 is installed between the two side end baffles 102 on the same side, and screws 207 are used to engage with the rivet nuts 205 through the connecting holes 206 and tightened. Subsequently, the cover-end waterproof foam 209 is covered on the side end baffle 102, and finally the cover plate 202 is covered on the foam and tightened to the cover 103 of the busbar body 100 to form a complete sealing system.

[0067] The most suitable pouring port is selected based on the final installation orientation of the busbar body 100. When the busbar body 100 is installed horizontally, a horizontal pouring port 203 located on the side sealing plate 201 is selected. This pouring port facilitates side operation and ensures uniform flow of the refractory material within the horizontal cavity. When the busbar is installed vertically, an upwardly protruding vertical pouring port 204 located at the end of the cover plate 202 is selected. This pouring port utilizes gravity to allow the refractory material to fill naturally from top to bottom. The selection of the pouring port also needs to consider the on-site construction conditions and the compatibility of the pouring equipment.

[0068] Insulating and waterproof casting refractory is poured into the casting cavity C through the selected pouring port. The casting refractory should be mixed evenly according to the formula beforehand, and the viscosity should be controlled to ensure fluidity.

[0069] Allow the castable material in cavity C to fully cure under appropriate conditions. Vibration and movement should be avoided during the curing process to ensure a tight bond between the castable material and each component, forming a complete, one-piece, waterproof, and sealed structure.

[0070] After sealing and molding, the 100-joint busbar body is fully inspected to ensure that the joint quality meets the design requirements and safety standards. Through strict process control and multiple quality inspections, the 100-joint busbar body can achieve reliable waterproof sealing and electrical insulation under various operating conditions, which greatly improves the safety and service life of the power system.

[0071] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of this utility model.

Claims

1. A busbar connection connector, characterized in that: include, Side sealing plates (201) are disposed on both sides of the ends of the busbar body (100); A cover plate (202) is provided on the upper and lower end faces of the side cover plate (201) and is connected to the busbar body (100); The side sealing plate (201), the cover plate (202), and the busbar body (100) together define the casting cavity (C).

2. The busbar connection connector as described in claim 1, characterized in that: Each of the cover plates (202) has a horizontal pouring port (203) that communicates with the pouring cavity (C).

3. The busbar connection joint as described in claim 1 or 2, characterized in that: The end of any of the cover plates (202) is provided with a vertical pouring port (204) that protrudes outward from the pouring cavity (C) and communicates with the pouring cavity (C).

4. The busbar connection joint as described in claim 1 or 2, characterized in that: The busbar body (100) includes a casting block (101) and a side end baffle (102). A casting block (101) is located at the end of the busbar body (100); A side end baffle (102), which is connected to the side sealing plate (201), is provided at the end of the busbar body (100) and is located on both sides of the casting block (101); The middle part of the side sealing plate (201) protrudes outward from the casting cavity (C), and its two ends form a horizontal surface connected to the side end baffle (102).

5. The busbar connection joint as described in claim 1 or 2, characterized in that: The busbar body (100) also includes two shell covers (103) arranged opposite to each other. A rivet nut (205) is provided through the shell cover (103) and the side end baffle (102). A connecting hole (206) corresponding to the rivet nut (205) is provided on the cover plate (202) and the side sealing plate (201). A screw (207) is provided through the connecting hole (206) and connected to the rivet nut (205) on the cover plate (202) and the side sealing plate (201).

6. The busbar connection joint as described in claim 5, characterized in that: A side-end waterproof foam (208) is provided between the side end baffle (102) and the side sealing plate (201), and a cover end waterproof foam (209) that fits the inner wall of the cover plate (202) is covered on the side sealing plate (201). The shape of the waterproof foam (209) at the cover end matches the shape of the cover plate (202), and the edge of the cover plate (202) is bent inward to form a flange (202a) covering the waterproof foam (209) at the cover end.

7. The busbar connection joint as described in claim 6, characterized in that: Both the side-end waterproof foam (208) and the cover-end waterproof foam (209) are provided with positioning holes (210) corresponding to the rivet nut (205). The diameter of the positioning hole (210) is slightly larger than the diameter of the rivet nut (205).

8. A waterproof busbar, characterized in that: Including the busbar connection joint as described in any one of claims 1-2 or 6-7, further comprising: At least two busbar bodies (100) are coaxially opposite each other and spaced apart; A connecting assembly (300) is connected between the two busbar bodies (100) and located within the casting cavity (C); The busbar body (100) contains a number of busbar conductors (104) that penetrate the casting block (101) and there is a gap between the ends of two adjacent busbar conductors (104).

9. The waterproof busbar as described in claim 8, characterized in that: The busbar body (100) also includes mounting lugs (105) located at opposite ends of the casting block (101) and inside the casting cavity (C).

10. The waterproof busbar as described in claim 9, characterized in that: The connecting assembly (300) includes an insulating partition (301) disposed between two adjacent bus conductors (104) and clamping plates (302) disposed opposite to the two mounting lugs (105). A square nut (303) is provided on one of the clamping plates (302), and a torque bolt (304) is provided on the other clamping plate (302) that penetrates the insulating partition (301) and is connected to the square nut (303). The insulating partition (301) is provided with a current-connecting conductor (301a) that is in contact with the bus conductor (104), and the torque bolt (304) is fitted with an insulating sleeve (305) that is slidably connected to the insulating partition (301).

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