High-voltage current aluminum row connector

Abstract

The utility model discloses a high-voltage current aluminum row connector, which comprises a shell assembly and an aluminum row assembly, the shell assembly comprises a shell, a front mounting plate and a rear mounting plate, the front mounting plate and the rear mounting plate are both arranged in the shell, an end cover is connected above the shell, and the aluminum row assembly is arranged in the shell. The aluminum bar assembly comprises an aluminum bar, a copper sleeve, a wire sealing body and a tail cover, and the lower portion of one end of the aluminum bar is connected with the copper sleeve through torque welding. According to the utility model, the aluminum bar and the copper sleeve are connected together through torque welding, so that electrochemical corrosion caused by mechanical contact and electrification of copper and aluminum is avoided, and increase of contact resistance between the aluminum and the copper caused by an oxide layer generated on a contact surface between the aluminum and the copper is avoided. The copper sleeve is provided with the protruding structure, and the structure is simple, easy to machine and easy to weld. The power distribution cabinet is corrosion-resistant, dust-proof, electric shock-proof, good in protection effect and safe.

Description

Technical Field

[0001] The utility model relates to the field of electrical connectors, in particular to a high-voltage current aluminum busbar connector. Background Art

[0002] In the fields of electric power, electronics, communication, etc., the connection between aluminum and copper is a common connection method, mainly used for transmitting current. However, due to the different electrode potentials of aluminum and copper, when they are in contact, a primary battery will be formed, resulting in electrochemical corrosion. This will not only affect the connection stability, but also may cause an increase in resistance, thus affecting the current transmission efficiency.

[0003] The existing solutions mainly add a layer of nickel or other metals between the aluminum busbar and the copper busbar as a transition layer to reduce the influence of electrochemical corrosion. In addition, there are also some solutions that change the shape or structure of the aluminum busbar and the copper busbar to reduce their contact area, thereby reducing the occurrence of electrochemical corrosion. However, the above solutions still have some problems. First, the method of adding a transition layer can reduce electrochemical corrosion, but it increases the manufacturing cost and process complexity. Second, changing the shape or structure of the aluminum busbar and the copper busbar may affect the connection reliability and stability. In addition, the existing anti-corrosion devices often cannot effectively prevent the electrochemical corrosion at the aluminum-copper connection. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a high-voltage current aluminum busbar connector to solve the above problems.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A high-voltage current aluminum busbar connector includes a housing assembly and an aluminum busbar assembly. The housing assembly includes a housing, a front mounting plate and a rear mounting plate. The front mounting plate and the rear mounting plate are both arranged in the housing. A end cover is connected above the housing, and a flange is integrally connected to the bottom of the housing. The aluminum busbar assembly includes an aluminum busbar, a copper sleeve, a wire sealing body and a tail cover. The tail cover is sleeved on one end of the housing and connected to the housing. The aluminum busbar is arranged in the housing. One end of the aluminum busbar is connected to the copper sleeve by torque welding below, and the other end of the aluminum busbar extends out of the tail cover. The wire sealing body is sleeved on the aluminum busbar, and the wire sealing body is arranged in the housing and close to the position of the tail cover.

[0007] Preferably, a groove for placing the copper sleeve is arranged below the aluminum busbar. The aluminum busbar and the copper sleeve are both provided with threaded holes, and the aluminum busbar and the copper sleeve are connected by screws.

[0008] Preferably, a protrusion is arranged on one side of the copper sleeve away from the aluminum busbar.

[0009] Preferably, a first groove is provided at the top of the housing, and an end cap sealing ring is provided in the first groove.

[0010] Preferably, the housing and the end cap are both provided with connection holes, and the housing and the end cap are connected by screws passing through the connection holes.

[0011] Preferably, a second groove is provided at the bottom of the flange, and a flange sealing ring is provided in the second groove.

[0012] The beneficial effects of the present utility model are as follows: In the present utility model, the aluminum row and the copper sleeve are connected together by torque welding, which avoids the electrochemical corrosion caused by the mechanical contact and energization of copper and aluminum, and avoids the increase in the contact resistance between aluminum and copper due to the oxide layer generated on the contact surface between aluminum and copper. The copper sleeve is provided with a convex structure, which is simple and easy to process and is easy to weld. The present utility model can prevent corrosion, dust and electric shock, and has good protection effect and safety. Description of the Drawings

[0013] Figure 1 is the exploded structural schematic diagram of the present utility model;

[0014] Figure 2 is the structural schematic diagram of the housing assembly of the present utility model;

[0015] Figure 3 is the structural schematic diagram of the present utility model;

[0016] Figure 4 is Figure 3 the sectional structural schematic diagram of;

[0017] Among them, housing assembly 1, aluminum row assembly 2, housing 3, front mounting plate 4, rear mounting plate 5, first groove 6, end cap sealing ring 7, end cap 8, connection hole 9, screw 10, flange 11, second groove 12, flange sealing ring 13, aluminum row 14, copper sleeve 15, wire sealing body 16, tail cap 17, groove 18, protrusion 19. Detailed Description of the Preferred Embodiments

[0018] The technical solutions of the present utility model will be further described in detail below in conjunction with the specific embodiments.

[0019] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "inner", "outer", "upper", "lower", "horizontal", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0020] Such as Figures 1 to 4As shown in the figure, the utility model provides a high-voltage current aluminum busbar connector, which includes a housing assembly 1 and an aluminum busbar assembly 2.

[0021] Among them, the housing assembly 1 includes a housing 3, a front mounting plate 4 and a rear mounting plate 5. The front mounting plate 4 and the rear mounting plate 5 are both arranged inside the housing 3. A end cover 8 is arranged above the housing 3. Both the housing 3 and the end cover 8 are provided with connection holes 9. The housing 3 and the end cover 8 are connected by screws 10 passing through the connection holes 9. A first groove 6 is opened at the top of the housing 3. An end cover sealing ring 7 is arranged inside the first groove 6. The end cover sealing ring 7 is used to seal the inside of the housing 3. The end cover 8 is connected to the housing assembly 1 by screws 10 to form a reliable aluminum busbar connector. This connector can effectively prevent moisture, dust and electric shock, and effectively prevent electrochemical corrosion. A flange 11 is integrally connected to the bottom of the housing 3. A second groove 12 is opened at the bottom of the flange 11. A flange sealing ring 13 is arranged inside the second groove 12. Through the screws 10 and the flange 11, the connector can be connected and sealed with a copper busbar (not shown) at the other end to form a reliable connection.

[0022] The aluminum busbar assembly 2 includes an aluminum busbar 14, a copper sleeve 15, a wire sealing body 16 and a tail cover 17. The tail cover 17 is sleeved on one end of the housing 3 and connected to the housing 3. The aluminum busbar 14 is arranged inside the housing 3. One end of the aluminum busbar 14 extends into the front mounting plate 4, and the other end of the aluminum busbar 14 passes through the rear mounting plate 5 and extends out of the tail cover 17. A copper sleeve is arranged below one end of the aluminum busbar 14 close to the front mounting plate 4. The contact surface between the aluminum busbar 14 and the copper sleeve 15 is connected by torque welding to form a reliable copper-aluminum transition. The wire sealing body 16 is sleeved on the aluminum busbar 14. The wire sealing body 16 is arranged inside the housing 3 and close to the tail cover 17.

[0023] Furthermore, a groove 18 for placing the copper sleeve 15 is arranged below the aluminum busbar 14. Both the aluminum busbar 14 and the copper sleeve 15 are provided with threaded holes. The aluminum busbar 14 and the copper sleeve 15 are connected by screws 10. A protrusion 19 is arranged on the side of the copper sleeve 15 away from the aluminum busbar 14. When the utility model is connected to a copper busbar at the other end, it can contact through the surface of the protrusion 19 of the copper sleeve 15, so as to avoid the electrochemical corrosion that occurs in the mechanical contact between copper and aluminum, and can avoid the stress relaxation caused by the formation of voids at the connection interface during the thermal shock process due to the different thermal expansion coefficients of copper and aluminum.

[0024] When the utility model is in use, an end cover sealing ring 7, a front mounting plate 4, a rear mounting plate 5 and a flange sealing ring 13 are loaded into a housing 3 to form a housing assembly 1. A copper sleeve 15 is connected to an aluminum row 14 by torque welding to form a reliable copper-aluminum transition joint. Then, a tail cover 17 and a wire sealing body 16 are sequentially mounted on the aluminum row 14 to form an aluminum row assembly 2. The connected aluminum row 14 is inserted into the housing 3 from the rear, and then the wire sealing body 16 and the tail cover 17 are also loaded into the housing 3 to obtain a connector. Screws 10 can be used to fix the connector to a copper row at the other end, and the aluminum row 14, the copper sleeve 15 and the copper row are fixed together by the screws 10 to form a reliable connection, effectively preventing electrochemical corrosion and avoiding stress relaxation caused by the formation of voids at the connection interface during thermal shock due to the different thermal expansion coefficients of copper and aluminum. Finally, an end cover 8 is connected to the housing assembly 1 by screws 10 to form a reliable aluminum row connector. This connector can effectively prevent moisture, dust and electric shock, and effectively prevent electrochemical corrosion.

[0025] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic characteristics of the present utility model, the present utility model can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed rights.

[0026] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A high voltage current aluminum bar connector, comprising a housing assembly and an aluminum bar assembly, characterized in that: The shell assembly includes a shell, a front mounting plate and a rear mounting plate, the front mounting plate and the rear mounting plate are both arranged in the shell, the upper part of the shell is connected with an end cover, and the bottom of the shell is integrally connected with a flange; the aluminum bar assembly includes an aluminum bar, a copper sleeve, a wire sealing body and a tail cover, the tail cover is sleeved on one side end of the shell and connected to the shell, the aluminum bar is arranged in the shell, the lower part of one end of the aluminum bar is connected to the copper sleeve by torque welding, and the other end of the aluminum bar extends out of the tail cover, the wire sealing body is sleeved on the aluminum bar, and the wire sealing body is arranged in the shell and close to the tail cover.

2. The high voltage current aluminum bus connector according to claim 1, characterized in that: A groove for placing the copper sleeve is arranged below the aluminum bar, and both the aluminum bar and the copper sleeve are provided with threaded holes, and the aluminum bar and the copper sleeve are connected by screws.

3. The high voltage current aluminum bar connector according to claim 2, characterized in that: A protrusion is arranged on a side of the copper sleeve away from the aluminum bar.

4. The high voltage current aluminum busbar connector according to claim 1, characterized in that: A first groove is arranged on the top of the shell, and an end cover sealing ring is arranged in the first groove.

5. The high voltage current aluminum bar connector according to claim 4, characterized in that: The shell and the end cover are both provided with connection holes, and the shell and the end cover are connected by screws passing through the connection holes.

6. The high voltage current aluminum bar connector according to claim 1, characterized in that: A second groove is formed at the bottom of the flange, and a flange sealing ring is arranged in the second groove.

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