Copper-aluminum transition bar and copper-aluminum wiring structure of generator

Abstract

The utility model relates to the technical field of electrical connection, discloses a copper-aluminum transition rod and a generator copper-aluminum wiring structure, and is used for improving the situation that an existing copper-aluminum transition rod is unstable in structure. The copper-aluminum transition bar comprises a cylindrical copper bar and an aluminum bar, the end portion of the copper bar and the end portion of the aluminum bar are welded to form a transition bar body, a flat copper bar connecting portion is formed at the end, away from the aluminum bar, of the copper bar and used for being welded to a copper bar, and a flat aluminum bar connecting portion is formed at the end, away from the copper bar, of the aluminum bar and used for being welded to a copper bar. The aluminum bar connecting part is used for being welded with an aluminum bar.

Description

Technical Field

[0001] This application relates to the technical field of electrical connections, and in particular to a copper-aluminum transition rod and a copper-aluminum wiring structure for a generator. Background Art

[0002] In the copper-aluminum transition structure of the aluminum wire winding of the generator in the prior art, the copper rod and the aluminum rod are mostly stamped into a flat shape, and then the ends of the flat copper rod and the aluminum rod are welded together by flash welding, and finally welded to the copper row and the aluminum row respectively. Based on the specific application environment, the aluminum rod usually needs to be bent at a certain angle and shape to connect with the aluminum row, and the welding joint between the copper rod and the aluminum rod is subjected to greater stress. It is found in practice that the welding joint between the copper rod and the aluminum rod is prone to breakage and the structure is unstable. Summary of the Invention

[0003] The purpose of this application is to make up for the deficiencies of the prior art, and provide a copper-aluminum transition rod and a copper-aluminum wiring structure for a generator, which are used to improve the unstable situation of the existing copper-aluminum transition rod structure.

[0004] In order to solve the above technical problems, this application adopts the following technical solutions:

[0005] In a first aspect, this application provides a copper-aluminum transition rod, which includes a cylindrical copper rod and an aluminum rod. The end of the copper rod is welded to the end of the aluminum rod to form a transition rod body. A flat copper row connection part is formed at the end of the copper rod away from the aluminum rod, and the copper row connection part is used for welding with a copper row. A flat aluminum row connection part is formed at the end of the aluminum rod away from the copper rod, and the aluminum row connection part is used for welding with an aluminum row.

[0006] Optionally, the extension length of the aluminum row connection part is in the range of 90 mm - 150 mm.

[0007] Optionally, the extension length of the copper row connection part is in the range of 10 mm - 50 mm.

[0008] Optionally, the aluminum row connection part is bent into a U shape.

[0009] Optionally, the end of the copper rod is friction-welded to the end of the aluminum rod to form the transition rod body.

[0010] Optionally, the flat copper row connection part is formed by extruding the copper rod.

[0011] Optionally, the thickness of the copper row connection part is h1, the diameter of the copper rod is d1, and 0.1 ≤ h1 / d1 ≤ 0.7.

[0012] Optionally, the flat aluminum row connection part is formed by extruding the aluminum rod.

[0013] Optionally, the thickness of the aluminum row connection part is h2, the diameter of the aluminum bar is d2, and 0.1 ≤ h2 / d2 ≤ 0.7.

[0014] In a second aspect, the present application also provides a copper-aluminum wiring structure for a generator, including a copper row, a generator aluminum wire winding, and the copper-aluminum transition bar according to any one of the embodiments of the first aspect. The copper-aluminum transition bar is arranged on the side of the generator aluminum wire winding. The copper row connection part of the copper-aluminum transition bar is welded to the copper row, and the aluminum row connection part of the copper-aluminum transition bar is bent and welded to the generator aluminum wire winding. Description of the Drawings

[0015] In order to make the advantages of the present application easier to understand, the present application briefly described above will be described in more detail by referring to the specific embodiments shown in the drawings. It can be understood that these drawings only depict typical embodiments of the present application, and thus should not be considered as limiting the scope of its protection. The present application will be described and explained with additional features and details through the drawings.

[0016] Figure 1 It is a schematic structural diagram of a copper-aluminum transition bar provided by the present application;

[0017] Figure 2 It is a schematic structural diagram of another perspective of a copper-aluminum transition bar provided by the present application.

[0018] The reference numerals are as follows:

[0019] 100, copper bar; 200, aluminum bar; 300, transition bar body; 400, copper row connection part; 500, aluminum row connection part. Detailed Embodiments

[0020] In the following description, a large number of specific details are given to provide a more thorough understanding of the present application. However, it is obvious to those skilled in the art that the embodiments of the present application can be implemented without one or more of these details. In other examples, in order to avoid confusion with the embodiments of the present application, some technical features well known to the public are not described.

[0021] In order to thoroughly understand the embodiments of the present application, detailed structures will be presented in the following description. Obviously, the implementation of the embodiments of the present application is not limited to the special details familiar to those skilled in the art. The preferred embodiments of the present application are described in detail below. However, in addition to these detailed descriptions, the present application can also have other embodiments.

[0022] In the description of the present application, the term "A and / or B" represents all possible combinations of A and B, such as only A, only B, or A and B. The term "at least one A or B" or "at least one of A and B" has a meaning similar to "A and / or B", and can include only A, only B, or A and B. The singular terms "a" and "the" can also include the plural form. The orientation or positional relationship indicated by terms such as "inner side", "outer side", "longitudinal direction", "lateral direction", "upper", "lower", "top", "bottom", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application rather than requiring the present application to be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present application. The terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Additionally, in the description of the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "joined" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0023] The following further elaborates on the embodiments of the present application with reference to the drawings:

[0024] In the first aspect, please refer to Figure 1 and Figure 2 , Figure 1 which is a schematic structural diagram of a copper-aluminum transition bar provided by the present application, Figure 2 and which is a schematic structural diagram of another perspective of a copper-aluminum transition bar provided by the present application. The present application provides a copper-aluminum transition bar, which includes a cylindrical copper bar 100 and an aluminum bar 200. The end of the copper bar 100 is welded to the end of the aluminum bar 200 to form a transition bar body 300. A flat copper row connection part 400 is formed at one end of the copper bar 100 away from the aluminum bar 200, and the copper row connection part 400 is used for welding with the copper row. A flat aluminum row connection part 500 is formed at one end of the aluminum bar 200 away from the copper bar 100, and the aluminum row connection part 500 is used for welding with the aluminum row.

[0025] In the above implementation process, the welding surface between the copper bar 100 and the aluminum bar 200 is circular, which can improve the stability of the welding surface. Additionally, a flat copper row connection part 400 is formed at one end of the copper bar 100, and a flat aluminum row connection part 500 is formed at one end of the aluminum bar 200, which facilitates the connection of the two ends of the transition bar body 300 to the copper row and the aluminum row after being bent.

[0026] Preferably, the copper rod 100 and the aluminum rod 200 are welded by friction welding. By utilizing the original cylindrical shapes of the copper rod 100 and the aluminum rod 200, welding the copper rod 100 and the aluminum rod 200 by friction welding provides higher welding effect and stability compared to flash welding.

[0027] Optionally, the extension length of the aluminum busbar connecting portion 500 is in the range of 90 mm - 150 mm. Reserving a relatively long aluminum busbar connecting portion 500 facilitates the end of the aluminum busbar connecting portion 500 to be butted near the aluminum busbar with a fixed position after being bent into different angles and shapes, which is convenient for welding with the aluminum busbar.

[0028] Optionally, the extension length of the copper busbar connecting portion 400 is 10 mm - 50 mm. Compared with the flat structure, the cylindrical structure is not easily deformed under the same stress. Therefore, reserving a relatively long cylindrical copper rod 100 structure can further improve the structural stability of the copper-aluminum transition rod.

[0029] In a possible implementation manner, the aluminum busbar connecting portion 500 is bent into a U shape.

[0030] In the above implementation process, in the copper-aluminum transition structure of the generator aluminum wire winding, the copper-aluminum transition rod is generally arranged on the side of the aluminum wire winding. Therefore, bending the aluminum busbar connecting portion 500 into a U shape facilitates the end of the aluminum busbar connecting portion 500 to be wound to the front of the aluminum wire winding for welding with the aluminum wire winding.

[0031] Optionally, the flat copper busbar connecting portion 400 is formed by extruding the copper rod 100, that is, the flat copper busbar connecting portion 400 and the copper rod 100 with a cylindrical structure are of an integrally formed structure.

[0032] Optionally, for the thickness h1 of the copper busbar connecting portion 400 and the diameter d1 of the copper rod 100, 0.1 ≤ h1 / d1 ≤ 0.7. Limiting the thickness of the copper busbar connecting portion 400 within this range can, on the one hand, ensure the structural strength of the copper busbar connecting portion 400, and on the other hand, facilitate the bending of the copper busbar connecting portion 400 to adapt to different connection positions.

[0033] Optionally, the flat aluminum busbar connecting portion 500 is formed by extruding the aluminum busbar, that is, the flat aluminum busbar connecting portion 500 and the aluminum rod 200 with a cylindrical structure are of an integrally formed structure.

[0034] Optionally, for the thickness h1 of the aluminum busbar connecting portion 500 and the diameter d1 of the aluminum rod 200, 0.1 ≤ h1 / d1 ≤ 0.7. Limiting the thickness of the aluminum busbar connecting portion 500 within this range can, on the one hand, ensure the structural strength of the aluminum busbar connecting portion 500, and on the other hand, facilitate the bending of the aluminum busbar connecting portion 500 to adapt to different connection positions.

[0035] In a second aspect, an embodiment of the present application further provides a copper-aluminum wiring structure for a generator, which includes a copper busbar, an aluminum wire winding of the generator, and the copper-aluminum transition rod according to any one of the embodiments of the first aspect. The copper-aluminum transition rod is arranged on the side of the aluminum wire winding of the generator. The copper busbar connection portion 400 of the copper-aluminum transition rod is welded to the copper busbar, and the aluminum busbar connection portion 500 of the copper-aluminum transition rod is bent and then welded to the aluminum wire winding of the generator.

[0036] The foregoing has shown and described the basic principles, main features and advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above-described exemplary embodiments, and without departing from the spirit or basic features of the present application, the present application can be implemented in other specific forms. Therefore, in any aspect, the embodiments should be regarded as exemplary and non-limiting. The scope of the present application 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 embraced within the present application. Any reference signs in the claims should not be construed as limiting the claimed rights.

[0037] 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 copper-aluminum transition rod, characterized in that: It comprises a cylindrical copper rod and an aluminum rod, wherein the end of the copper rod is welded to the end of the aluminum rod to form a transition rod body, a flat copper bar connecting portion is formed at one end of the copper rod away from the aluminum rod, and the copper bar connecting portion is used for welding with the copper bar, and a flat aluminum bar connecting portion is formed at one end of the aluminum rod away from the copper rod, and the aluminum bar connecting portion is used for welding with the aluminum bar.

2. The copper-aluminum transition rod according to claim 1, characterized in that: The extension length of the aluminum bar connecting portion is in the range of 90 mm to 150 mm.

3. The copper-aluminum transition rod according to claim 1, characterized in that: The extension length of the copper busbar connection portion is in the range of 10 mm to 50 mm.

4. The copper-aluminum transition rod according to claim 1, characterized in that: The aluminum bar connecting portion is bent into a U shape.

5. The copper-aluminum transition rod according to claim 1, characterized in that: The end of the copper rod and the end of the aluminum rod are friction welded to form the transition rod body.

6. The copper-aluminum transition rod according to claim 1, characterized in that: The flat copper busbar connecting portion is formed by extruding the copper rod.

7. The copper-aluminum transition rod according to claim 6, characterized in that: The thickness of the copper busbar connection portion is h1, the diameter of the copper rod is d1, and 0.1≤h1 / d1≤0.

7.

8. The copper-aluminum transition rod according to claim 1, characterized in that: The flat aluminum bar connecting portion is formed by extruding the aluminum rod.

9. The copper-aluminum transition rod according to claim 7, characterized in that: The thickness of the aluminum bar connection portion is h2, the diameter of the aluminum rod is d2, and 0.1≤h2 / d2≤0.

7.

10. A copper-aluminum connection structure for a generator, characterized in that: It comprises a copper bar, an aluminum wire winding of a generator and the copper-aluminum transition rod as described in any one of claims 1 to 9, wherein the copper-aluminum transition rod is arranged on the side of the aluminum wire winding of the generator, the copper bar connecting portion of the copper-aluminum transition rod is welded to the copper bar, and the aluminum bar connecting portion of the copper-aluminum transition rod is bent and welded to the aluminum wire winding of the generator.

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