Pouring bus joint

Abstract

The invention discloses a pouring bus joint, which relates to the technical field of buses and comprises a pouring bus connector, a pouring bus, a sealing device and a joint pouring body, the pouring bus connector is connected between the two sections of pouring buses, the sealing device is sealed outside the joint of the pouring bus connector and the pouring buses, and the joint pouring body is poured outside the sealing device; the first layer of protection is carried out on the outgoing conductor of the casting bus and the connector through the sealing device, so that direct contact between the casting material and the outgoing conductor of the bus and the connector is avoided; the risks that bubbles or air gaps, complex structure areas or narrow channels are not completely filled, cracks are generated in the material curing process, the mechanical strength is reduced, leakage is caused and the like are avoided, and then the problems of electric leakage and breakdown caused by partial discharge caused by castable are solved; and after the first layer of protection is completed, the whole joint part is poured by using a mold to form a second layer of protection. And the safety and the stability of the joint are fully ensured through secondary protection.

Description

Technical Field

[0001] The present invention relates to the technical field of busbars, in particular to a cast busbar joint. Background Art

[0002] When casting the joints of traditional cast busbars, the busbar's outgoing conductors and connectors are cast as a whole. This solution has the following disadvantages:

[0003] 1) Bubbles and air gaps

[0004] Bubbles or air gaps appear inside or on the interface of the casting material (usually due to air mixed into the material, poor exhaust due to excessively fast casting speed, or excessively high viscosity of the material that prevents gas from being discharged), resulting in decreased insulation performance and mechanical strength;

[0005] 2) Incomplete filling and voids

[0006] The complex structural areas or narrow channels inside the connector are not completely filled (due to insufficient pouring pressure, poor material fluidity or premature curing caused by too low mold temperature), forming voids or delamination, affecting the conductive stability and mechanical sealing;

[0007] 3) Shrinkage stress and cracking

[0008] After curing, the material may have cracks at the interface or in the body due to excessive shrinkage or mismatch with the shell's thermal expansion coefficient (such as epoxy resin and metal shell), resulting in reduced mechanical strength and leakage risk.

[0009] 4) Poor bonding and delamination

[0010] The casting body and the connector are not firmly bonded (due to surface contamination), resulting in delamination, increased contact resistance or sealing failure;

[0011] 5) Insufficient insulation performance

[0012] Partial discharge or withstand voltage test failure (due to material impurities, uneven insulation thickness or electric field concentration), causing leakage or even breakdown;

[0013] 6) Pollution and material degradation

[0014] Impurities, discoloration or bubble accumulation on the surface of the casting (due to environmental dust / moisture intrusion, material moisture absorption or uneven mixing) reduce reliability and life;

[0015] 7) Process fluctuations and batch differences

[0016] Unstable performance between batches (due to manual error, mold wear, or material batch differences), resulting in a decrease in yield. Summary of the Invention

[0017] The purpose of the present invention is to provide a cast busbar joint to solve the problems existing in the above-mentioned prior art.

[0018] To achieve the above object, the present invention provides the following solutions:

[0019] The present invention provides a cast busbar joint, comprising a cast busbar connector, a cast busbar, a sealing device and a joint casting body; the cast busbar connector is connected between two sections of the cast busbar, the sealing device is sealed on the outside of the connection between the cast busbar connector and the cast busbar, and the joint casting body is cast on the outside of the sealing device.

[0020] Preferably, the sealing device includes an insulating clip, an upper sealing cover and a lower sealing cover, and the upper sealing cover and the lower sealing cover are respectively sealed and connected to the upper and lower parts of the connection between the cast busbar connector and the cast busbar and are connected through the insulating clip.

[0021] Preferably, there are two groups of insulating clips, which are respectively arranged on both sides of the cast busbar connector, and each group of insulating clips includes multiple vertically arranged insulating strips, two of which are arranged on the front and rear sides of the outgoing conductor of the cast busbar, and the other insulating strips are inserted between two adjacent outgoing conductors; the upper sealing cover and the lower sealing cover have the same structure, including a connector slot in the middle and sealing strip sleeves on both sides, the connector slot can be inserted into the slot of the cast busbar connector, and the sealing strip sleeve can be sleeved on the end of each insulating strip of the insulating clip.

[0022] Preferably, the connector slot and the sealing strip ferrule are connected to the cover bodies of the upper sealing cover and the lower sealing cover.

[0023] Preferably, the joint casting body is a rectangular casting structure cast outside the sealing device.

[0024] Preferably, the outgoing conductors of the two sections of the cast busbar are respectively inserted into the slots of the cast busbar connector from both sides of the cast busbar connector, and the portions of the outgoing conductors not inserted into the cast busbar connector are interspersed with the insulating strips.

[0025] Compared with the prior art, the present invention has achieved the following technical effects:

[0026] The cast busbar joint of the present invention uses a sealing device as a first layer of protection, preventing direct contact between the castable material and the busbar conductors and connectors. This prevents risks such as bubbles or air gaps, incomplete filling of complex structural areas or narrow channels, cracks during the material curing process, mechanical strength loss, and leakage. This addresses the issue of leakage and breakdown caused by partial discharge of the castable material. After the first layer of protection is completed, a second layer of protection is formed by casting the entire joint using a mold. This second layer of protection fully ensures the safety and stability of the joint.

[0027] Furthermore, the sealing device includes an insulating clip, an upper sealing cover and a lower sealing cover, which can be assembled by plugging in without tools, thereby improving efficiency, eliminating the need for additional connectors, and reducing material and production costs. It has the advantage of low cost, and the detachable assembly method facilitates product maintenance and component replacement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 It is a three-dimensional assembly diagram of the cast busbar joint in the present invention;

[0030] Figure 2 It is a three-dimensional assembly diagram of the sealing device of the present invention;

[0031] Figure 3 An exploded view of the sealing device of the present invention;

[0032] Figure 4 A partial exploded view of the sealing device of the present invention;

[0033] Figure 5 Schematic diagram of the three-dimensional structure of the lower sealing cover of the present invention;

[0034] In the figure: 1. Cast busbar connector; 2. Cast busbar; 3. Outgoing conductor; 4. Joint casting body; 5. Sealing device; 6. Insulation clip; 7. Upper sealing cover; 8. Lower sealing cover; 9. Insulation strip; 10. Connector slot; 11. Sealing strip sleeve. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0036] The purpose of the present invention is to provide a cast busbar joint to solve the problems existing in the prior art.

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0038] The cast busbar joint in this embodiment is as follows Figure 1-5 As shown, it includes a cast busbar connector 1, a cast busbar 2, a sealing device 5 and a joint casting body 4; the cast busbar connector 1 is connected between two sections of cast busbar 2, the sealing device 5 is sealed on the outside of the connection between the cast busbar connector 1 and the cast busbar 2, and the joint casting body 4 is cast on the outside of the sealing device 5.

[0039] In this embodiment, the sealing device 5 includes an insulating clip 6, an upper sealing cover 7, and a lower sealing cover 8. The upper sealing cover 7 and the lower sealing cover 8 are respectively sealed and connected to the upper and lower portions of the connection between the cast busbar connector 1 and the cast busbar 2 and are connected via the insulating clip 6. The upper and lower sealing covers 7 and 8, combined with the insulating clip 6 connecting them, provide a first layer of sealing protection, preventing direct contact between the castable material and the busbar outlet conductors 3 and the connector.

[0040] In this specific embodiment, two groups of insulating clips 6 are provided, one on each side of the cast busbar connector 1. Each group of insulating clips 6 includes multiple vertically arranged insulating strips 9, two of which are provided on the front and rear sides of the outgoing conductors 3 of the cast busbar, and the other insulating strips 9 are inserted between two adjacent outgoing conductors 3. The upper sealing cover 7 and the lower sealing cover 8 have the same structure, including a connector slot 10 in the middle and sealing strip clamps 11 on both sides. The connector slot 10 can be inserted into the notch of the cast busbar connector 1, and the sealing strip clamps 11 can be sleeved onto the ends of each insulating strip 9 of the insulating clips 6. The upper sealing cover 7 and the lower sealing cover 8 are inserted into the notch of the cast busbar connector 1 through the connector slot 10, and the sealing strip clamps 11 connect the sealing strips. The connector slot 10 and the sealing strip clamps 11 are connected to the cover bodies of the upper sealing cover 7 and the lower sealing cover 8.

[0041] In this specific embodiment, the joint casting body 4 is a rectangular parallelepiped casting structure cast outside the sealing device 5 .

[0042] In this specific embodiment, the outgoing conductors 3 of the two sections of cast busbars 2 are respectively inserted into the slots of the cast busbar connector 1 from both sides of the cast busbar connector 1, and the parts of the outgoing conductors 3 not inserted into the cast busbar connector 1 are inserted with insulating strips 9.

[0043] The assembly process of the cast busbar 2 joint in the present invention is as follows:

[0044] Align the connector slot 10 in the lower sealing cover 8 with the various notches of the cast busbar connector 1 and insert it. The sealing strip sleeves 11 on both sides are respectively inserted between the outgoing conductors 3 of the cast busbar. Then, align the various sealing strips with the various sealing strip sleeves 11 on the lower sealing cover 8 and insert them into the various sealing strip sleeves 11 from the top. Finally, align the upper sealing cover 7 from the top with the various notches and sealing strips of the cast busbar connector 1 to complete the assembly of the sealing device 5. After the assembly of the first sealing device 5 is completed, the joint casting body 4 is cast in the mold.

[0045] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A cast busbar joint, characterized in that: It includes a cast busbar connector, a cast busbar, a sealing device and a joint casting body; the cast busbar connector is connected between two sections of the cast busbar, the sealing device is sealed on the outside of the connection between the cast busbar connector and the cast busbar, and the joint casting body is cast on the outside of the sealing device.

2. The cast busbar joint according to claim 1, characterized in that: The sealing device includes an insulating buckle, an upper sealing cover and a lower sealing cover. The upper sealing cover and the lower sealing cover are respectively sealed and connected to the upper and lower parts of the connection between the casting busbar connector and the casting busbar and are connected through the insulating buckle.

3. The cast busbar joint according to claim 2, characterized in that: There are two groups of insulating clips, which are respectively arranged on both sides of the cast busbar connector. Each group of insulating clips includes multiple vertically arranged insulating strips, two of which are arranged on the front and rear sides of the outgoing conductor of the cast busbar, and the other insulating strips are inserted between two adjacent outgoing conductors. The upper sealing cover and the lower sealing cover have the same structure, including a connector slot in the middle and sealing strip sleeves on both sides. The connector slot can be inserted into the notch of the cast busbar connector, and the sealing strip sleeve can be sleeved on the end of each insulating strip of the insulating clip.

4. The cast busbar joint according to claim 2, characterized in that: The connector slot and the sealing strip sleeve are connected to the cover bodies of the upper sealing cover and the lower sealing cover.

5. The cast busbar joint according to claim 1, characterized in that: The joint casting body is a rectangular casting structure cast outside the sealing device.

6. The cast busbar joint according to claim 3, characterized in that: The outgoing conductors of the two sections of the cast busbar are respectively inserted into the notches of the cast busbar connector from both sides of the cast busbar connector, and the portions of the outgoing conductors not inserted into the cast busbar connector are interspersed with the insulating strips.

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