Novel terminal connection structure applied to photovoltaic connector

Abstract

The utility model discloses a novel terminal connecting structure applied to a photovoltaic connector, which comprises a male connector and a female connector matched with the male connector, the male connector comprises a conversion terminal riveted on a wire core at the end part of an aluminum wire, the other end of the conversion terminal is fixed with a copper terminal, and the other end of the conversion terminal is fixed with a connecting piece. The conversion terminal comprises a fixed part sleeved on the outer side of the wire core and a first welding section connected with the copper terminal, the copper terminal comprises a terminal body and a second welding section connected with the terminal body, and the conversion terminal and the copper terminal are formed by punching. According to the utility model, the aluminum wire and the conversion terminal are connected through the aluminum conversion terminal, and then the aluminum conversion terminal and the copper terminal are welded through ultrasonic waves, so that the aluminum conversion terminal and the copper terminal can be tightly combined through the ultrasonic welding, potential difference corrosion is avoided, and the production cost is further reduced through the terminal structure formed by punching compared with the terminal structure formed by upsetting.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic connector technology, and in particular to a novel terminal connection structure for use in photovoltaic connectors. Background Technology

[0002] In a photovoltaic power plant, the electricity generated by a large number of components is collected and fed into the inverter. This requires photovoltaic cables and connectors. Connectors are key components that connect various parts of the photovoltaic power generation system, such as photovoltaic modules, junction boxes, inverters, and combiner boxes.

[0003] Currently, a large number of photovoltaic cables are needed during the installation of photovoltaic modules. Conventional photovoltaic cables use copper conductors, while photovoltaic modules typically use aluminum conductors when connected to the grid in order to save costs. The connection between aluminum core cables and copper terminals is prone to loosening if riveting is used because the two different metals have different coefficients of thermal expansion. At the same time, potential difference corrosion is likely to occur between the two different metals. Utility Model Content

[0004] To address the aforementioned technical problems, a novel terminal connection structure for use in photovoltaic connectors is provided.

[0005] To achieve the above objectives, this utility model discloses a novel terminal connection structure for photovoltaic connectors, including a male connector and a female connector that matches the male connector. The male connector includes an adapter terminal riveted to the end of an aluminum wire core. The other end of the adapter terminal is fixed to a copper terminal. The adapter terminal includes a fixing part sleeved on the outside of the core and a first welding section connected to the copper terminal. The copper terminal includes a terminal body and a second welding section connected to the terminal body. Both the adapter terminal and the copper terminal are stamped.

[0006] Furthermore, the adapter terminal is made of aluminum.

[0007] Furthermore, a first buffer section is provided between the fixing part and the first welding section for transition connection. Both the first welding section and the second welding section are rectangular thin sheet structures, and the first welding section overlaps the surface of the second welding section.

[0008] Furthermore, the fixing part is a closed structure that completely covers the outside of the wire core. The closed structure completes the connection between the adapter terminal and the aluminum wire through rectangular riveting or hexagonal riveting.

[0009] Furthermore, the fixing part is an open structure that partially surrounds the outside of the wire core. The open structure completes the connection between the adapter terminal and the aluminum wire through heart-shaped riveting.

[0010] Furthermore, the terminal body is a male plug-in structure, and a second buffer section is provided between the male plug-in structure and the second welding section for transition connection, and a second buffer section is provided between the male plug-in section and the second welding section for transition connection.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a novel terminal connection structure for photovoltaic connectors. The aluminum wire and the adapter terminal are connected by an aluminum adapter terminal, and then the aluminum adapter terminal and the copper terminal are ultrasonically welded. Ultrasonic welding can make the two tightly bonded and avoid potential difference corrosion. The stamped terminal structure further reduces the production cost compared with the upset forming. Attached Figure Description

[0012] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0013] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present utility model.

[0014] Figure 2 This is a riveting structure according to Embodiment 1 of this utility model.

[0015] Figure 3 This is another riveting structure according to Embodiment 1 of this utility model.

[0016] Figure 4 This is a schematic diagram of the structure of Embodiment 2 of this utility model.

[0017] Figure 5 This is a riveting structure according to Embodiment 2 of this utility model.

[0018] In the diagram: 1 is aluminum wire; 11 is wire core; 2 is adapter terminal; 21 is fixing part; 22 is first welding section; 23 is first buffer section; 3 is copper terminal; 31 is terminal body; 32 is second welding section; 33 is second buffer section. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Embodiment 1 of this utility model, as follows: Figure 1As shown in the diagram, the male connector structure includes an aluminum adapter terminal 2 riveted to the end core 11 of an aluminum wire 1. Aluminum wire is less expensive than copper wire. The other end of the adapter terminal 2 is fixed to a copper terminal 3 by ultrasonic welding. The adapter terminal 2 includes a fixing part 21 sleeved on the outside of the core 11 and a first welding section 22 connected to the copper terminal 3. The copper terminal 3 includes a terminal body 31 and a second welding section 32 connected to the terminal body 31. Both the adapter terminal 2 and the copper terminal 3 are stamped. The aluminum wire and the adapter terminal are connected by the aluminum adapter terminal, and then the aluminum adapter terminal and the copper terminal are ultrasonically welded. Ultrasonic welding can make the two tightly bonded and avoid potential difference corrosion. The stamped terminal structure further reduces production costs compared to the upset forming.

[0021] The terminal body 31 is a male plug-in structure. A second buffer section 33 is provided between the male plug-in structure and the second welding section 32 for transition connection. The buffer section plays a protective role during ultrasonic welding to prevent the second welding section from breaking.

[0022] A first buffer section 23 is provided between the fixing part 21 and the first welding section 22 for transition connection, which has the same function as the second buffer section. Both the first welding section 22 and the second welding section 32 are rectangular thin sheet structures. The first welding section 22 overlaps the surface of the second welding section 32. The first welding section and the second welding section are used for ultrasonic welding. This area has a high degree of flatness.

[0023] like Figure 2 and Figure 3 As shown, the fixing part 21 is a closed structure that completely covers the outside of the wire core 11. The closed structure completes the connection between the adapter terminal 2 and the aluminum wire 1 by rectangular riveting or hexagonal riveting.

[0024] Embodiment two of this application, such as Figure 4 and Figure 5 As shown, the difference from Embodiment 1 is that the fixing part 21 is an open structure that covers the outside of the wire core 11 in a semi-enclosed state. The open structure completes the connection between the adapter terminal 2 and the aluminum wire 1 through heart-shaped riveting.

[0025] As is common knowledge in the field, the structure of a female connector that matches the structure of a male connector should be predictable. The difference lies in the insertion structure of the terminal body in the copper terminal. The specific structure is not disclosed in this application, and the function of each part corresponds to the function of each part in the male connector.

[0026] The working principle of this embodiment is as follows: First, select a closed or open type of adapter terminal according to the riveting structure. Then, connect the adapter terminal to the wire core through the corresponding riveting structure. Clean the surface of the first welding section of the adapter terminal and the second welding section of the copper terminal and stack them together. Use ultrasonic welding to make the two tightly bonded to avoid the generation of potential difference.

[0027] Several points need to be clarified: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly, and can refer to mechanical or electrical connections, or internal connections between two components, or direct connections. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships, and the relative positional relationships may change when the absolute position of the described objects changes. Second, in this document, relational terms such as "first" and "second" are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities.

[0028] The above examples are merely illustrative of this utility model and do not constitute a limitation on the scope of protection of this utility model. All designs that are the same as or similar to this utility model are within the scope of protection of this utility model.

Claims

1. A novel terminal connection structure for photovoltaic connectors, comprising a male connector and a female connector that matches the male connector, characterized in that, The male connector includes an adapter terminal (2) riveted to the end core (11) of the aluminum wire (1). The other end of the adapter terminal (2) is fixed to a copper terminal (3). The adapter terminal (2) includes a fixing part (21) sleeved on the outside of the core (11) and a first welding section (22) connected to the copper terminal (3). The copper terminal (3) includes a terminal body (31) and a second welding section (32) connected to the terminal body (31). Both the adapter terminal (2) and the copper terminal (3) are stamped.

2. A novel terminal connection structure for photovoltaic connectors according to claim 1, characterized in that, The adapter terminal (2) is made of aluminum.

3. A novel terminal connection structure for photovoltaic connectors according to claim 1, characterized in that, A first buffer section (23) is provided between the fixing part (21) and the first welding section (22) for transition connection. Both the first welding section (22) and the second welding section (32) are rectangular thin sheet structures, and the first welding section (22) overlaps the surface of the second welding section (32).

4. A novel terminal connection structure for photovoltaic connectors according to claim 3, characterized in that, The fixing part (21) is a closed structure that completely covers the outside of the wire core (11). The closed structure completes the connection between the adapter terminal (2) and the aluminum wire (1) by rectangular riveting or hexagonal riveting.

5. A novel terminal connection structure for photovoltaic connectors according to claim 3, characterized in that, The fixing part (21) is an open structure that covers the outside of the wire core (11) in a semi-enclosed state. The open structure completes the connection between the adapter terminal (2) and the aluminum wire (1) through heart-shaped riveting.

6. A novel terminal connection structure for photovoltaic connectors according to claim 1, characterized in that, The terminal body (31) is a male plug-in structure, and a second buffer section (33) is provided between the male plug-in structure and the second welding section (32) for transition connection.

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