Photovoltaic junction box

Abstract

The utility model discloses a photovoltaic junction box which comprises a shell fixedly installed on the outer side of a photovoltaic support and further comprises a bottom plate for fixedly installing electrical components, one side and the bottom of the shell are provided with openings communicated with an inner cavity, the upper end of one side of the bottom plate is fixedly connected with a side plate, and the inner wall, close to the bottom, of the shell is transversely provided with a limiting groove. The two sides of the bottom plate are fixedly connected with inserting rails in sliding connection with the limiting grooves, the position, close to the side plate, of the upper end of the shell is fixedly connected with an inserting pin, the upper end of the side plate is fixedly connected with a fixing base, and an inserting hole in butt joint with the inserting pin transversely penetrates through the fixing base. The shell and the base side plates at the bottom are connected in a portable and detachable mode, the influence of wading and rusting caused by bolt connection is avoided, the bottom plate and the connecting structure at the upper end can be rapidly taken down in the follow-up detaching process, an open operation space is provided for workers, and the workers can conduct overhaul and maintenance operation conveniently.

Description

Technical Field

[0001] The utility model relates to the field related to photovoltaic components, and in particular to a photovoltaic junction box. Background Art

[0002] Due to their excellent photoelectric conversion efficiency, solar cells have become a key focus of clean energy development. Solar panels absorb sunlight and convert solar radiation directly or indirectly into electrical energy through the photoelectric or photochemical effects. Compared to conventional batteries and rechargeable batteries, solar cells are more energy-efficient and environmentally friendly. The photovoltaic junction box is a crucial component of a photovoltaic module. It serves as a connection between the solar cell array and the solar charging control unit. Its primary function is to connect and protect the photovoltaic module, connect the electricity generated by the solar cells to external circuits, and conduct the current generated by the photovoltaic module.

[0003] At present, the existing photovoltaic junction box consists of a box body and a box cover, and the two are fixed together by screws, and then the box body is fixedly installed at the specified position of the photovoltaic module using fasteners. In this way, when the components inside the photovoltaic junction box are subsequently inspected and maintained, it is necessary to loosen the screws and open the box cover for operation. Since the box body is closed on all sides and only the top is open, the space left for staff to operate is limited, and the operation is relatively inconvenient. In addition, if the fasteners are disassembled in rainy days, the screws are prone to rust, which will affect the subsequent disassembly. Utility Model Content

[0004] The utility model designs a photovoltaic junction box to solve the technical problems raised in the background technology and proposes the following technical solutions:

[0005] A photovoltaic junction box comprises a shell fixedly mounted on the outside of a photovoltaic bracket, and also comprises a bottom plate fixedly mounted on an electrical component, one side and the bottom of the shell are both provided with openings communicating with an inner cavity, the upper end of one side of the bottom plate is fixedly connected to a side plate, the inner wall of the shell near the bottom is laterally provided with a limiting groove, and both sides of the bottom plate are fixedly connected with plug rails slidably connected to the limiting groove, the upper end of the shell is fixedly connected to a plug pin near the side plate, and the upper end of the side plate is fixedly connected to a fixing seat, the fixing seat is laterally penetrated by a plug hole for docking with the plug pin, and the upper end of the fixing seat is movably penetrated by a plug extending into the plug hole, and the upper end of the plug pin is penetrated by a plug hole for docking with the plug pin.

[0006] Preferably, an identification plate is provided on the front of the shell, and a card slot is provided on the side of the shell docking side plate.

[0007] Preferably, a threading hole is provided transversely through the side plate, and a rubber sleeve is provided at the outer end of the threading hole.

[0008] Preferably, a card frame that is engaged with the card slot is fixedly provided on the inner side surface of the side panel.

[0009] Preferably, the contact surface between the card frame and the card slot and the contact surface between the plug-in rail and the limiting slot are both provided with rubber pads.

[0010] Preferably, the upper end of the latch is fixedly connected to a fixing block, and the bottom of the fixing block is connected to the upper end of the fixing seat via a contraction spring, and the contraction spring is movably sleeved on the outer side of the latch.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model is different from the traditional photovoltaic junction box structure design. One side and the bottom of the shell adopt an open structure design, and the components inside the junction box are installed on the upper end of the bottom plate. The upper end of the bottom plate is connected to the outer side plate and is snap-fitted to the outer side of the shell. It is quickly installed with the limit pin and the fixing seat, which not only avoids the influence of rust caused by water on the bolt connection, but also maintains the sealing of the connection with the sealing structure. The bottom plate and the upper end connection structure can be quickly removed during subsequent disassembly, and an open operating space is provided for the staff, which is conducive to the staff's inspection and maintenance operations. The overall practical effect is obvious and worthy of promotion and use in the existing market. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a side view schematic diagram of the shell structure of the utility model;

[0015] Figure 3 This is a schematic diagram of the connection structure between the limit pin and the fixing seat of the utility model.

[0016] In the figure: 1-shell, 101-identification plate, 102-card slot, 2-opening, 3-side panel, 301-threading hole, 302-rubber sleeve, 303-card frame, 4-bottom plate, 5-limiting slot, 6-plug-in rail, 7-limiting pin, 8-fixing seat, 9-plug-in hole, 10-plug pin, 1001-fixing block, 1002-contraction spring, 11-plug-in hole, 12-photovoltaic bracket. DETAILED DESCRIPTION

[0017] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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 understood as a limitation on the present invention.

[0018] In the description of the present invention, “plurality” means two or more, unless otherwise clearly defined.

[0019] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0021] Reference Manual Figure 1-3 A photovoltaic junction box includes a shell 1 fixedly mounted on the outside of a photovoltaic bracket 12, and also includes a bottom plate 4 for fixing electrical components. One side and the bottom of the shell 1 are provided with openings 2 communicating with the inner cavity. The upper end of one side of the bottom plate 4 is fixedly connected to a side plate 3. A limiting groove 5 is horizontally provided on the inner wall of the shell 1 near the bottom, and both sides of the bottom plate 4 are fixedly connected to a plug rail 6 that is slidably connected to the limiting groove 5. A plug pin 7 is fixedly connected to the position of the upper end of the shell 1 near the side plate 3, and a fixed pin 7 is fixedly connected to the upper end of the side plate 3. The fixed seat 8 is provided with a plug hole 9 that is connected to the plug pin 7 through the horizontal direction, and the upper end of the fixed seat 8 is movably connected with a plug pin 10 extending into the plug hole 9, and the upper end of the plug pin 7 is provided with a plug hole 11 that is connected to the plug pin 10. An identification plate 101 is provided on the front of the shell 1. The upper end of the plug pin 10 is fixedly connected to the fixed block 1001, and the bottom of the fixed block 1001 is connected to the upper end of the fixed seat 8 through a contraction spring 1002, and the contraction spring 1002 is movably sleeved on the outside of the plug pin 10.

[0022] Based on the above structure, when the present invention is in use, the bottom plate 4 is docked with the opening 2 at the bottom of the shell 1, and the plug-in rail 6 on the outside of the bottom plate 4 is snap-fitted with the limit groove 5 on the inner wall of the shell 1. The bottom plate 4 is slid and pushed until the side plate 3 abuts against the opening 2 on the outside of the shell 1, and the installation of the bottom plate 4 and the upper components and the shell 1 is completed to form the structure of the photovoltaic junction box. Then, during subsequent disassembly and maintenance, it is only necessary to slide and remove the bottom plate 4 to remove it, providing the staff with an open operating space, which is conducive to the staff's inspection and maintenance operations. At the same time, during the sliding installation process, the staff holds the fixing block 1001 and stretches the pin 10 and the contraction spring 1002, so that the pin 10 is disengaged from the plug hole 9, and when the side panel 3 is close to the shell 1, the plug pin 7 on the outside of the shell 1 moves through the plug hole 9, and then after the side panel 3 abuts against the shell 1, the fixing block 1001 is released and the elastic contraction of the contraction spring 1002 drives the pin 10 to be plugged into the plug hole 11 at the upper end of the plug pin 7 to complete the limited fixation, so that the composition of the photovoltaic junction box is stable and the subsequent disassembly is also convenient.

[0023] Among them, a card slot 102 is provided on the side of the shell 1 that is connected to the side panel 3, and a card frame 303 that is connected to the card slot 102 is fixedly provided on the inner side of the side panel 3. The card frame 303 and the card slot 102 can play a connection limiting effect and also have a certain sealing effect improvement. A threading hole 301 is provided horizontally through the side panel 3, and a rubber sleeve 302 is provided at the outer end of the threading hole 301. The line is connected from the threading hole 301, and the rubber sleeve 302 is sleeved on the outside of the line. The threading hole 301 can be sealed by utilizing the elastic contraction of the rubber sleeve 302.

[0024] Among them, the contact surface between the card frame 303 and the card slot 102 and the contact surface between the plug-in rail 6 and the limit slot 5 are both provided with rubber pads, which can effectively increase the overall connection sealing. The rubber pads also have a friction effect, which can increase the stability of the card connection.

[0025] In the description of the present invention, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

Claims

1. A photovoltaic junction box, comprising a housing (1) fixedly mounted on the outside of a photovoltaic bracket (12), and a bottom plate (4) for fixing electrical components, characterized in that: The shell (1) is provided with an opening (2) communicating with the inner cavity on one side and the bottom, the upper end of one side of the bottom plate (4) is fixedly connected to the side plate (3), the inner wall of the shell (1) near the bottom is transversely provided with a limit groove (5), and the two sides of the bottom plate (4) are fixedly connected with a plug rail (6) slidably connected to the limit groove (5), the upper end of the shell (1) is fixedly connected with a plug pin (7) near the side plate (3), and the upper end of the side plate (3) is fixedly connected with a fixed seat (8), the fixed seat (8) is transversely penetrated with a plug hole (9) docked with the plug pin (7), and the upper end of the fixed seat (8) is movably penetrated with a plug pin (10) extending into the plug hole (9), and the upper end of the plug pin (7) is penetrated with a plug hole (11) docked with the plug pin (10).

2. A photovoltaic junction box according to claim 1, characterized in that: The front of the housing (1) is provided with an identification plate (101), and the side of the housing (1) that is connected to the side plate (3) is provided with a card slot (102).

3. A photovoltaic junction box according to claim 2, characterized in that: The side plate (3) is provided with a threading hole (301) extending transversely therethrough, and a rubber sleeve (302) is provided at the outer end of the threading hole (301).

4. A photovoltaic junction box according to claim 3, characterized in that: A card frame (303) that is engaged with the card slot (102) is also fixedly provided on the inner side surface of the side plate (3).

5. The photovoltaic junction box according to claim 4, characterized in that: The contact surface between the card frame (303) and the card slot (102) and the contact surface between the plug-in rail (6) and the limit slot (5) are both provided with rubber pads.

6. The photovoltaic junction box according to claim 5, characterized in that: The upper end of the latch (10) is fixedly connected to a fixed block (1001), and the bottom of the fixed block (1001) is connected to the upper end of the fixed seat (8) via a contraction spring (1002), and the contraction spring (1002) is movably sleeved on the outside of the latch (10).

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