Photovoltaic junction box

Abstract

The utility model relates to the junction box field, and specifically discloses a photovoltaic junction box comprising a junction box, a sealing cover is arranged above the junction box, an exhaust valve pipe is arranged on the upper surface of the sealing cover, a spring backing plate is arranged on the upper end in the exhaust valve pipe, and a spring is arranged on the lower surface of the spring backing plate. And a valve plate is installed at the lower end of the spring, a valve seat is installed at the position, located on the inner side wall of the exhaust valve pipe, of the lower end of the exhaust valve pipe, a sealing bag is installed at the position, located on the inner side of the sealing cover, of the lower end of the exhaust valve pipe, and a sealing pad is installed at the position, located on the inner side wall of the sealing cover, of the lower end of the sealing bag. After the valve plate clamped in the valve seat is integrally adsorbed upwards, a passage is formed between the exhaust valve pipe and the valve seat, and gas in a cavity formed between the sealing bag and the junction box is pumped outwards, so that the sealing performance between the sealing cover and the junction box is ensured, and the safety in use is ensured.

Description

Technical Field

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

[0002] The main function of the junction box is to connect the solar cell circuit inside the module with the external circuit through the positive and negative cables of the junction box to transmit the electric energy. The junction box is glued to the back plate of the module through silicone. The junction box is equipped with a bypass diode to protect the battery string. The junction box is mainly composed of three parts: the junction box body, cables and connection terminals. The junction box body is generally composed of the following parts: base, conductive parts, diodes, sealing rings, sealing silicone, box cover, etc.

[0003] However, since the junction box is mostly used outdoors, and the sealing performance of the conventional junction box is poor, water easily enters during use. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a photovoltaic junction box to solve the problems mentioned in the above background.

[0005] The utility model provides the following technical solutions: a photovoltaic junction box, comprising a junction box, a sealing cover is arranged above the junction box, an exhaust valve tube is installed on the upper surface of the sealing cover, a spring pad is installed on the inner upper end of the exhaust valve tube, a spring is installed on the lower surface of the spring pad, a valve plate is installed on the lower end of the spring, a valve seat is installed on the inner side wall of the exhaust valve tube below the valve plate, a closing bag is installed on the inner side of the sealing cover at the lower end of the exhaust valve tube, a sealing pad is installed on the inner side wall of the sealing cover below the closing bag, and an exhaust sealing cover is arranged above the exhaust valve tube.

[0006] As a further solution of the utility model: a sealing protrusion is provided on the surface of the junction box, an upper buckle plate is installed at the lower end of the sealing cover, and a lower buckle block is installed on the outer side of the junction box at a position corresponding to the upper buckle plate.

[0007] As a further solution of the utility model: a conductive block is installed inside the junction box, a card interface is arranged on the outside of the conductive block, and a cable is connected to one side of the junction box.

[0008] As a further solution of the utility model: the exhaust valve pipe and the sealing bag are connected, and the sealing bag is fixedly connected to the sealing cover.

[0009] As a further solution of the utility model: the valve plate is clamped with the valve seat, and the valve plate is fixedly connected with the spring pad via the spring.

[0010] As a further solution of the utility model: the exhaust cover is engaged and fixedly connected with the exhaust valve pipe.

[0011] As a further solution of the utility model: the sealing cover is clamped with the sealing protrusion through the sealing gasket, and the lower buckle block is clamped with the upper buckle plate.

[0012] As a further solution of the utility model: the cable is electrically connected to the conductive block and the card interface.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. By adsorbing the valve plate clamped inside the valve seat upward as a whole, a passage is formed between the exhaust valve pipe and the valve seat, and the gas inside the cavity formed between the closed bag and the junction box is pumped outward, thereby ensuring the sealing between the sealing cover and the junction box and ensuring safety during use.

[0015] 2. After the sealing gasket on the inner wall of the sealing cover is aligned with the sealing protrusion on the upper end of the junction box, the sealing cover is pressed toward the junction box as a whole, so that the sealing protrusion squeezes and deforms the sealing gasket, thereby ensuring the sealing effect of the connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a photovoltaic junction box;

[0017] Figure 2 is a cross-sectional view of a sealing cover in a photovoltaic junction box;

[0018] Figure 3 It is a structural schematic diagram of a junction box in a photovoltaic junction box;

[0019] Figure 4 It is a cross-sectional view of the entire device in a photovoltaic junction box.

[0020] In the figure: 1, junction box; 2, sealing cover; 3, exhaust sealing cover; 4, exhaust valve pipe; 5, lower buckle block; 6, upper buckle plate; 7, cable; 101, sealing protrusion; 102, conductive block; 103, card interface; 201, sealing gasket; 202, sealing bag; 401, spring pad; 402, valve plate; 403, spring; 404, valve seat. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-4 As shown, this embodiment provides a photovoltaic junction box, including a junction box 1, a sealing cover 2 is arranged above the junction box 1, an exhaust valve tube 4 is installed on the upper surface of the sealing cover 2, a spring pad 401 is installed on the inner upper end of the exhaust valve tube 4, a spring 403 is installed on the lower surface of the spring pad 401, a valve plate 402 is installed on the lower end of the spring 403, the valve plate 402 is fixedly connected to the spring pad 401 through the spring 403, a valve seat 404 is installed on the inner side wall of the exhaust valve tube 4 below the valve plate 402, the valve plate 402 is clamped with the valve seat 404, a closing bag 202 is installed on the inner side of the sealing cover 2 at the lower end of the exhaust valve tube 4, the closing bag 202 is fixedly connected to the sealing cover 2, the exhaust valve tube 4 and the closing bag 202 are connected, a sealing pad 201 is installed on the inner side wall of the sealing cover 2 below the closing bag 202, an exhaust sealing cover 3 is arranged above the exhaust valve tube 4, and the exhaust sealing cover 3 is meshed and fixedly connected with the exhaust valve tube 4.

[0023] like Figure 2-4 As shown, in this embodiment, a sealing protrusion 101 is provided on the surface of the junction box 1, and the sealing cover 2 is clamped with the sealing protrusion 101 through a sealing gasket 201, an upper buckle plate 6 is installed at the lower end of the sealing cover 2, and a lower buckle block 5 is installed on the outer side of the junction box 1 at a position corresponding to the upper buckle plate 6, and the lower buckle block 5 is clamped with the upper buckle plate 6, a conductive block 102 is installed inside the junction box 1, and a card interface 103 is provided on the outer side of the conductive block 102, and a cable 7 is connected to one side of the junction box 1, and the cable 7 is electrically connected to the conductive block 102 and the card interface 103.

[0024] The working principle of the utility model is as follows: in use, after the wiring is completed through the card interface 103 on the outer side of the conductive block 102 inside the junction box 1, the sealing cover 2 is covered as a whole on the upper position of the junction box 1, and the sealing gasket 201 on the inner wall of the sealing cover 2 is made to correspond to the sealing protrusion 101 on the upper end of the junction box 1 as a whole, and the sealing cover 2 is pressed against the position of the junction box 1 as a whole, so that the sealing protrusion 101 squeezes the sealing gasket 201 and deforms it, and the upper buckle plate 6 at the lower end of the sealing cover 2 is moved as a whole and connected to the junction box. 1 is buckled and fixed by the lower buckle block 5 on the outside, and the exhaust sealing cover 3 is rotated to disconnect the meshing action with the exhaust valve pipe 4, and the vacuum pump is connected to the exhaust valve pipe 4, and the valve plate 402 clamped on the inside of the valve seat 404 is adsorbed upward as a whole, and the spring 403 is squeezed and deformed as a whole, so that a passage is formed between the exhaust valve pipe 4 and the valve seat 404, and the gas in the cavity formed between the sealing bag 202 and the junction box 1 is pumped outward, thereby ensuring the sealing between the sealing cover 2 and the junction box 1 and ensuring the safety in use.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic junction box, comprising a junction box (1), characterized in that: A sealing cover (2) is arranged above the junction box (1), an exhaust valve tube (4) is installed on the upper surface of the sealing cover (2), a spring pad (401) is installed on the upper end of the interior of the exhaust valve tube (4), a spring (403) is installed on the lower surface of the spring pad (401), a valve plate (402) is installed on the lower end of the spring (403), a valve seat (404) is installed on the inner side wall of the exhaust valve tube (4) below the valve plate (402), a sealing bag (202) is installed on the inner side of the sealing cover (2) at the lower end of the exhaust valve tube (4), a sealing gasket (201) is installed on the inner side wall of the sealing cover (2) below the sealing bag (202), and an exhaust sealing cover (3) is arranged above the exhaust valve tube (4).

2. A photovoltaic junction box according to claim 1, characterized in that: The surface of the junction box (1) is provided with a sealing protrusion (101), the lower end of the sealing cover (2) is provided with an upper buckle plate (6), and the outer side of the junction box (1) is provided with a lower buckle block (5) at a position corresponding to the upper buckle plate (6).

3. A photovoltaic junction box according to claim 1, characterized in that: A conductive block (102) is installed inside the junction box (1), a card interface (103) is provided on the outside of the conductive block (102), and a cable (7) is connected to one side of the junction box (1).

4. A photovoltaic junction box according to claim 1, characterized in that: The exhaust valve pipe (4) is arranged to penetrate the sealing bag (202), and the sealing bag (202) is fixedly connected to the sealing cover (2).

5. A photovoltaic junction box according to claim 1, characterized in that: The valve plate (402) is clamped with the valve seat (404), and the valve plate (402) is fixedly connected with the spring pad (401) via the spring (403).

6. A photovoltaic junction box according to claim 1, characterized in that: The exhaust sealing cover (3) is meshed and fixedly connected with the exhaust valve pipe (4).

7. A photovoltaic junction box according to claim 2, characterized in that: The sealing cover (2) is clamped with the sealing protrusion (101) via the sealing gasket (201), and the lower buckle block (5) is clamped with the upper buckle plate (6).

8. A photovoltaic junction box according to claim 3, characterized in that: The cable (7) is electrically connected to the conductive block (102) and the card interface (103).

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