Copper-aluminum conversion terminal

Abstract

The utility model provides a copper-aluminum conversion terminal, which consists of two parts, one end of the terminal is provided with a copper sleeve, the other end of the terminal is provided with an aluminum sleeve, and a reinforcing ring is sleeved on the aluminum sleeve. The copper-aluminum conversion terminal provided by the utility model can realize stable connection of a photovoltaic direct current aluminum cable, and the aluminum sleeve can avoid electrochemical corrosion caused by direct contact of copper and aluminum after being crimped with an aluminum wire. Compared with an existing copper-aluminum conversion terminal used in the photovoltaic field, the terminal structure has the advantages that the copper sleeve structure is added to ensure the retention force of the crimped aluminum wire, and the problem that the creep resistance of the crimped aluminum material is poor in the long-term use process can be effectively solved.

Description

Technical Field

[0001] The utility model relates to the field of connectors and belongs to a copper-aluminum transfer terminal. Background Art

[0002] Currently in the photovoltaic field, the direct current generated by photovoltaic power stations is sent to photovoltaic inverters through copper cables and DC connectors to be converted into alternating current for users. As the power of photovoltaic inverters continues to increase, more connectors and cables will be required. Since direct contact between aluminum cables and copper terminals will cause electrochemical corrosion, using aluminum cables instead of copper cables has become a cost-saving solution. Utility Model Content

[0003] The purpose of the utility model is to provide a copper-aluminum transfer terminal that can solve the copper-aluminum transfer terminal problems existing in the existing terminals. In order to achieve the purpose, the technical solution adopted by the utility model is:

[0004] A copper-aluminum transfer terminal is provided with two ends, one end of which is provided with a copper sleeve and the other end is provided with an aluminum sleeve, wherein the copper sleeve and the aluminum sleeve are connected, and a reinforcement ring is sleeved on the aluminum sleeve.

[0005] Furthermore, the aforementioned reinforcement ring is a ring made of metal material.

[0006] Furthermore, the aforementioned reinforcement ring is a copper tube reinforcement ring.

[0007] Furthermore, the copper sleeve and the aluminum sleeve are connected by friction welding.

[0008] Furthermore, a clamping groove is provided on the aforementioned aluminum sleeve.

[0009] From the above technical content, it can be known that the beneficial effect of the utility model is: the aluminum wire is crimped into the aluminum sleeve. This copper-aluminum transfer terminal is welded into a whole by friction welding of copper and aluminum bars, and then the corresponding structure is completed by machining, wherein the copper end is matched with the photovoltaic inverter board end connector, and the aluminum end structure is crimped with the aluminum wire. Since the aluminum material is soft and has poor creep resistance, the holding force after crimping will decrease with the increase of time, so a copper sleeve structure is added to the aluminum material of the copper-aluminum transfer terminal to increase the holding force of the crimped aluminum wire.

[0010] It should be understood that all combinations of the aforementioned concepts and the additional concepts described in more detail below can be considered as part of the utility model subject matter of the present disclosure as long as such concepts are not mutually contradictory. In addition, all combinations of the claimed subject matter are considered as part of the utility model subject matter of the present disclosure.

[0011] The foregoing and other aspects, embodiments and features of the present invention can be more fully understood from the following description in conjunction with the accompanying drawings. Other additional aspects of the present invention, such as the features and / or beneficial effects of the exemplary embodiments, will be apparent from the following description or learned from the practice of the specific embodiments according to the teachings of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are not intended to be drawn to scale. In the accompanying drawings, each identical or nearly identical component shown in various figures may be represented by the same reference numeral. For the sake of clarity, not every component is labeled in each figure. Now, embodiments of various aspects of the utility model will be described by way of example and with reference to the accompanying drawings, in which:

[0013] Figure 1 It is a schematic diagram of the structure of the copper-aluminum transfer terminal of the present utility model.

[0014] Figure 2 This is an exploded view of the copper-aluminum transfer terminal of the present utility model.

[0015] Figure 3 It is a cross-sectional view of AA of the present invention. DETAILED DESCRIPTION

[0016] In order to better understand the technical content of the present invention, specific embodiments are described below in conjunction with the accompanying drawings.

[0017] Various aspects of the utility model are described in the present disclosure with reference to the accompanying drawings, in which many illustrative embodiments are shown. The embodiments of the present disclosure are not necessarily intended to include all aspects of the utility model. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed by the utility model are not limited to any implementation. In addition, some aspects disclosed by the utility model can be used alone, or in any appropriate combination with other aspects disclosed by the utility model.

[0018] Those skilled in the art will recognize that the various embodiments may be implemented without one or more specific details or with other replacement and / or additional methods, materials or components. In other cases, well-known structures, materials or operations are not shown or described in detail to avoid obscuring aspects of the various embodiments of the utility model. Similarly, for the purpose of explanation, specific quantities, materials and configurations are set forth to provide a comprehensive understanding of the embodiments of the utility model. However, the utility model may be implemented without specific details. In addition, it should be understood that the various embodiments shown in the drawings are illustrative representations and are not necessarily drawn to scale.

[0019] like Figure 1-3 As shown, a copper-aluminum transfer terminal is provided with two ends, one end of which is provided with a copper sleeve 1, and the other end is provided with an aluminum sleeve 2, wherein the copper sleeve 1 and the aluminum sleeve 2 are connected, and a reinforcement ring 4 is sleeved on the aluminum sleeve 2.

[0020] In a further embodiment, the reinforcement ring 4 is a ring made of metal material.

[0021] In a further embodiment, the reinforcement ring 4 is a copper tube reinforcement ring.

[0022] In a further embodiment, the copper sleeve 1 and the aluminum sleeve 2 are connected by friction welding.

[0023] In a further embodiment, a clamping groove 21 and a tapered surface 22 are provided on the aluminum sleeve 2 .

[0024] During the implementation process, one end of the copper sleeve 1 and one end of the aluminum sleeve 2 are welded into a whole by friction welding, and the other end of the aluminum sleeve 2 is sleeved with a copper sleeve 4. A clamping groove 21 and a tapered surface 22 are provided on the aluminum sleeve 2 near the copper sleeve 4. The clamping groove 21 is used to fix the claw 3 sleeved thereon, and the other end of the claw 3 is in contact with the tapered surface 22. The copper sleeve of the copper-aluminum transfer terminal 1 is provided with a first hole 12 for copper electroplating, and the aluminum sleeve 2 is provided with a second hole 12 for observing the installation and electroplating of the aluminum wire. The aluminum wire arranged in the aluminum sleeve 2 is connected to the copper-aluminum transfer terminal as a whole by crimping the copper sleeve 4 and the aluminum sleeve 2.

[0025] The copper sleeve 1 and the aluminum sleeve 2 are respectively provided with observation holes, wherein the aluminum sleeve is provided with a first observation hole 12, and the copper sleeve is provided with a second observation hole 13. The first observation hole 12 is used to observe whether the wire in the access hole has been installed in place, and the second observation hole 13 can also facilitate electroplating.

[0026] The previous description of the utility model is provided to enable any person skilled in the art to practice or use the present disclosure. Various modifications to the utility model will be apparent to those skilled in the art, and the universal principles defined herein may be applied to other variations without departing from the spirit or scope of the present disclosure. Thus, the utility model is not intended to be limited to the examples and designs described in the specification, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

[0027] It can be seen from the above technical solutions that the copper-aluminum transfer terminal of the utility model can achieve a stable connection of photovoltaic DC aluminum cables, and the copper sleeve 4 is sleeved on the aluminum sleeve 2 to avoid electrochemical corrosion after the aluminum wire is crimped. Compared with the existing copper-aluminum transfer terminals used in the photovoltaic field, the terminal structure adds a copper sleeve structure to ensure the holding force of the crimped aluminum wire, and can effectively solve the problem of poor creep resistance of aluminum materials after crimping during long-term use.

[0028] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. A person with ordinary knowledge in the technical field to which the present invention belongs may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention shall be determined by the definition of the claims.

Claims

1. A copper-aluminum transfer terminal, characterized in that: The terminal is provided with two ends, one end of which is a copper sleeve and the other end is an aluminum sleeve, wherein the copper sleeve is connected to the aluminum sleeve, and a reinforcing ring is sleeved on the aluminum sleeve.

2. The copper-aluminum transfer terminal according to claim 1, characterized in that: The reinforcement ring is a ring made of metal material.

3. The copper-aluminum transfer terminal according to claim 1 or 2, characterized in that: The reinforcement ring is a copper tube reinforcement ring.

4. The copper-aluminum transfer terminal according to claim 1, characterized in that: The copper sleeve and the aluminum sleeve are connected by friction welding.

5. The copper-aluminum transfer terminal according to claim 1, characterized in that: The aluminum sleeve is provided with a clamping groove.

6. The copper-aluminum transfer terminal according to claim 1, characterized in that: The aluminum sleeve is provided with a first observation hole.

7. The copper-aluminum transfer terminal according to claim 1, characterized in that: The copper sleeve is provided with a second observation hole.

Images