Photovoltaic junction box adopting gluing sealing structure

Abstract

The utility model discloses a photovoltaic junction box adopting a gluing sealing structure, which comprises a junction box body, the junction box body is of an integrated junction box structure with a connector, a connector cavity and a junction box cavity are arranged in the junction box body, a diode assembly is arranged in the junction box cavity, and the diode assembly is connected with the connector cavity. A positioning column connected with the junction box body is arranged in the connector cavity, a connecting gap is arranged between the connector cavity at the bottom of the positioning column and the junction box cavity, a connecting terminal is sleeved on the positioning column, and the connecting terminal penetrates through the connecting gap to abut against the diode assembly. In the assembling process of the connecting terminal, the periphery of the connecting terminal is glued, and the sealing glue covers the connecting gap between the connector cavity and the junction box cavity after the connecting terminal is assembled, so that the junction box part is not influenced after air in the connector cavity is heated, and the safety is ensured; the problem that the pouring sealant of the junction box and the shell are stripped when part of air of the connector is heated is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of junction box gluing, in particular to a photovoltaic junction box adopting a gluing sealing structure. Background Art

[0002] In the integrated design of the connector and the junction box body, the connector part is not potted with glue, but the junction box part is potted with glue. There is air in the connector. When heated, the gas expands and affects the potting glue of the junction box part, causing the potting glue and the shell to peel off, affecting safety.

[0003] The existing terminals are directly assembled, and there is a gap between the connector and the junction box. The air in the connector part can easily expand due to heat and affect the junction box potting glue, causing the adhesion to decrease. In order to reduce costs and increase efficiency, the integration of the connector and the junction box can greatly improve production efficiency and reduce costs. In this process, it is necessary to solve the sealing problem of the joint between the connector and the junction box. Utility Model Content

[0004] In accordance with the above-mentioned technical problems to be solved, a photovoltaic junction box with a glue sealing structure is provided. During the terminal assembly process, glue is applied around the terminal. After assembly, the glue covers the gap between the connector and the junction box, so that the air in the connector will not affect the junction box part after heating, thereby ensuring safety.

[0005] To achieve the above-mentioned purpose, the utility model discloses a photovoltaic junction box with a glue sealing structure, including a junction box body, wherein the junction box body is an integrated junction box structure with a connector, a connector cavity and a junction box cavity are provided inside the junction box body, a diode assembly is installed in the junction box cavity, a positioning column connected to the junction box body is provided in the connector cavity, a connection gap is provided between the connector cavity at the bottom of the positioning column and the junction box cavity, a connection terminal is sleeved on the positioning column, and the connection terminal passes through the connection gap and abuts against the diode assembly.

[0006] Furthermore, the connecting terminal includes a positioning portion sleeved on the positioning portion and a connecting portion in contact with the diode assembly, and a sealant is provided at a position of the root of the connecting portion close to the positioning portion.

[0007] Furthermore, the sealant is annular in structure and covers the surface of the connection portion, and the coating direction is perpendicular to the central axis of the connection terminal.

[0008] Furthermore, the sealant is sealed and connected to the connector cavity near the connection gap.

[0009] Furthermore, an inclined guide surface is provided between the junction box body and the base of the positioning column above the connection gap.

[0010] Furthermore, the junction box cavity is filled with potting glue.

[0011] Furthermore, a cover plate is snap - fitted and installed on the junction box body at the top of the junction box cavity.

[0012] The beneficial effects of the present utility model compared with the prior art: The present utility model discloses a photovoltaic junction box adopting a glue - injection sealing structure. During the assembly process of the connection terminals, by injecting glue around the connection terminals, after assembly, the sealing glue covers the connection gap between the connector cavity and the junction box cavity, so that the air in the connector cavity will not affect the junction box part after being heated, ensuring safety and solving the problem of the peeling of the potting glue and the housing of the junction box caused by the heating of the air in the connector part. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0014] Figure 1 It is a schematic diagram of the assembly structure of the present utility model.

[0015] Figure 2 It is a sectional view of the assembly structure of the present utility model.

[0016] Figure 3 It is a schematic diagram of the structure of the junction box body of the present utility model.

[0017] Figure 4 For the present utility model Figure 1 Local enlarged view A.

[0018] Figure 5 It is a schematic diagram of the structure of the connection terminal of the present utility model.

[0019] In the figure: 1 is the junction box body; 11 is the junction box cavity; 12 is the connector cavity; 121 is the positioning post; 13 is the connection gap; 2 is the diode assembly; 3 is the connection terminal; 31 is the positioning part; 32 is the connection part; 33 is the sealant; 4 is the end cover. SPECIFIC EMBODIMENTS

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0021] An embodiment of the present utility model, such as Figure 1 , Figure 2 and Figure 3As shown, the junction box body 1 is an integrated junction box structure with a connector. Inside the junction box body 1, there are a connector cavity 12 and a junction box cavity 11. A diode component 2 is installed in the junction box cavity 11. A positioning post 121 connected to the junction box body 1 is arranged in the connector cavity 12. There is a connection gap 13 between the connector cavity 12 at the bottom of the positioning post 121 and the junction box cavity 11. A connection terminal 3 is sleeved on the positioning post 121, and the connection terminal 3 passes through the connection gap 13 and abuts against the diode component 2. During the assembly process of the connection terminal 3, by applying glue around the connection terminal 3, the sealing glue covers the connection gap between the connector cavity and the junction box cavity after assembly, so that the air in the connector cavity will not affect the junction box part after heating, ensuring safety and solving the problem of the air in the connector part heating up and peeling the potting glue and the housing of the junction box.

[0022] As Figure 5 shown, the connection terminal 3 includes a positioning part 31 sleeved on the positioning part 31 and a connection part 32 in contact with the diode component 2. A sealing glue 33 is arranged at a position near the positioning part 31 at the root of the connection part 32, which is convenient for the positioning and installation of the connection terminal 3.

[0023] The sealing glue 33 is in an annular structure covering the surface of the connection part 32, and the glue application direction is perpendicular to the central axis of the connection terminal 3. As Figure 4 shown, the sealing glue 33 is hermetically connected to the connector cavity 12 near the connection gap 13, ensuring that the sealing glue 33 fits completely with the connector cavity 12 during the installation process of the connection terminal 3, improving the sealing performance, isolating the air in the connector cavity 12 from the junction box cavity 11, and at the same time being able to prevent the air in the connector cavity 12 from moving to the junction box cavity 11 after heating, and preventing the potting glue from peeling from the junction box cavity above the connection part 32 of the connection terminal 3.

[0024] There is an inclined guiding surface between the junction box body 1 above the connection gap 13 and the root of the positioning post 121, which provides guidance for the connection terminal 3 and is convenient for the positioning and installation of the connection terminal 3.

[0025] The junction box cavity 11 is filled with potting glue to ensure the installation stability of the diode component.

[0026] A cover plate 4 is buckled and installed on the junction box body 1 at the top of the junction box cavity 11, which is convenient for disassembly and assembly.

[0027] Several points that need to be explained are: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, which can be mechanical connection or electrical connection, or internal communication between two elements, or direct connection. "Up", "down", "left", "right" and the like are only used to indicate relative position relationships. When the absolute position of the described object changes, the relative position relationship may change; secondly, in this article, relational terms such as first and second are only used to distinguish one entity from another, and do not necessarily require or imply that there is any such actual relationship or order between these entities.

[0028] The above examples are merely illustrative of the present invention and do not limit the scope of protection of the present invention. Any design that is identical or similar to the present invention falls within the scope of protection of the present invention.

Claims

1. A photovoltaic junction box using a caulking and sealing structure, comprising a junction box body (1), characterized in that, The junction box body (1) is an integrated junction box structure with a connector. Inside the junction box body (1), there are a connector cavity (12) and a junction box cavity (11). A diode assembly (2) is installed in the junction box cavity (11). A positioning post (121) connected to the junction box body (1) is arranged in the connector cavity (12). A connection gap (13) is provided between the connector cavity (12) at the bottom of the positioning post (121) and the junction box cavity (11). A connection terminal (3) is sleeved on the positioning post (121), and the connection terminal (3) passes through the connection gap (13) and abuts against the diode assembly (2).

2. The photovoltaic junction box adopting a caulking and sealing structure according to claim 1, characterized in that, The connection terminal (3) includes a positioning portion (31) sleeved on the positioning post (31) and a connection portion (32) in contact with the diode assembly (2). A sealant (33) is provided at a position near the positioning portion (31) at the root of the connection portion (32).

3. The photovoltaic junction box with a caulking and sealing structure according to claim 2, characterized in that, The sealant (33) is in an annular structure and covers the surface of the connection portion (32), and the glue application direction is perpendicular to the central axis of the connection terminal (3).

4. A photovoltaic junction box adopting a sealant sealing structure according to claim 2, characterized in that, The sealant (33) is hermetically connected to the connector cavity (12) near the connection gap (13).

5. A photovoltaic junction box adopting a caulking and sealing structure according to claim 1, characterized in that, An inclined guiding surface is provided between the junction box body (1) above the connection gap (13) and the root of the positioning post (121).

6. A photovoltaic junction box using a caulking and sealing structure according to claim 1, characterized in that, The junction box cavity (11) is filled with potting compound.

7. A photovoltaic junction box using a caulking and sealing structure according to claim 1, characterized in that, A cover plate (4) is snap-fitted on the junction box body (1) at the top of the junction box cavity (11).

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