Photovoltaic DC combiner box

Abstract

The utility model discloses a photovoltaic direct-current combiner box, which comprises a box body, a rain cover arranged on the upper side of the box body, a box door arranged on the front side of the box body, a rubber strip arranged outside the rear side wall of the box body, an upper fixed lug plate and a lower fixed lug plate arranged at the rear ends of the left and right side walls of the box body, and a sealing rubber strip arranged at the contact position of the box body and the box door, a label card slot is formed in the outer side surface of the box door; and a box lock is arranged between the box door and the right side wall of the box body. According to the utility model, through the arrangement of the sealing rubber strip, when the DC combiner box is used, the box door and the box body are effectively sealed through the sealing rubber strip, dust is prevented from entering the box body easily, and the sealing effect of the combiner box is further ensured; according to the direct current combiner box, the rubber strips are arranged when the direct current combiner box and the wall body are installed, so that the box body is effectively and flexibly protected, and the box body and the wall body are prevented from being easily damaged due to hard extrusion.

Description

Technical Field

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

[0002] Photovoltaic power generation is a technology that uses the photovoltaic effect of semiconductor interfaces to directly convert light energy into electrical energy. Photovoltaic power generation generates direct current, which requires the use of converging equipment to merge the direct current and transmit it to the inverter, which can then convert the direct current into alternating current for easy transmission to the power grid.

[0003] When the existing DC combiner box is in use, there is a lack of effective sealing device between the box door and the box body, which makes it easy for dust to enter the box body, thereby affecting the sealing effect of the combiner box. At the same time, when the existing DC combiner box is installed between the wall, there is a lack of effective flexible protection device, which makes it easy for the box body and the wall to be damaged by hard squeezing. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a photovoltaic DC combiner box, which overcomes the problem that when the existing DC combiner box is in use, there is a lack of an effective sealing device between the box door and the box body, which makes it easy for dust to enter the box body and thus affects the sealing effect of the combiner box.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A photovoltaic DC combiner box, comprising a box body, a rain cover is arranged on the upper side of the box body, a box door is arranged on the front side of the box body, a rubber strip is arranged on the outside of the rear side wall of the box body, two upper and lower fixing ear plates are arranged at the rear ends of the left and right side walls of the box body, a sealing strip is arranged at the contact position between the box body and the box door, a label card slot is arranged on the outer side of the box door, and a box lock is arranged between the box door and the right side wall of the box body;

[0007] A DC surge protector is arranged inside the box, a circuit breaker is arranged on one side of the DC surge protector, a monitor is arranged on the side of the DC surge protector away from the circuit breaker, a DC fuse is arranged on the lower side of the monitor, a lightning arrester is arranged on one side of the DC fuse, and wiring terminals are arranged on the lower side of the box.

[0008] In this embodiment, the rain cover is welded to the box body, the rubber strip is glued to the box body, and the fixed ear plate is welded to the box body.

[0009] In this embodiment, the box door is connected to the left side wall of the box body through a hinge, and the sealing strip is glued to the box body.

[0010] In this embodiment, the monitor, the circuit breaker, the DC surge protector and the lightning arrester are all connected to the box by screws.

[0011] The utility model provides a sealing strip so that when the DC combiner box is in use, the box door and the box body are effectively sealed by the sealing strip, so as to prevent dust from easily entering the box body, thereby ensuring the sealing effect of the combiner box;

[0012] The utility model provides a rubber strip so that the rubber strip is provided between the DC combiner box and the wall when the box is installed, so that the box body is effectively flexibly protected and damage between the box body and the wall due to hard squeezing is avoided. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0014] Figure 2 This is a schematic diagram of the main cross-sectional structure of the box body in the utility model;

[0015] Figure 3 It is a rear structural schematic diagram of the box body in the utility model.

[0016] In the figure: 1. Box body; 2. Box door; 3. Box lock; 4. Fixing ear plate; 5. Label card slot; 6. Circuit breaker; 7. DC surge protector; 8. DC fuse; 9. Lightning arrester; 10. Monitor; 11. Terminal block; 12. Rain cover; 13. Sealing strip; 14. Rubber strip. DETAILED DESCRIPTION

[0017] See also Figure 1-Figure 3 , a photovoltaic DC combiner box includes a box body 1, a rain cover 12 is arranged on the upper side of the box body 1, a box door 2 is arranged on the front side of the box body 1, the box body 1 and the box door 2 are both made of galvanized steel, a rubber strip 14 is arranged on the outside of the rear side wall of the box body 1, the rain cover 12 can protect the box body 1 from rain, and the rubber strip 14 can provide flexible protection between the box body 1 and the wall to prevent the box body 1 from being damaged by hard extrusion, and two upper and lower fixing ear plates 4 are arranged at the rear ends of the left and right side walls of the box body 1, and the box body 1 can be fixed to the wall by fixing the ear plates 4, and a sealing strip 13 is arranged at the contact position between the box body 1 and the box door 2, and the sealing strip 13 can make the connection between the box door 2 and the box body 1 tight to prevent dust from entering the inside of the box body 1, and a label card slot 5 is arranged on the outer side of the box door 2, and a label card can be inserted into the inner side of the label card slot 5, and a box lock 3 is arranged between the box door 2 and the right side wall of the box body 1, and the box lock 3 can lock the box door 2 to the right side wall of the box body 1;

[0018] A DC surge protector 7 is arranged on the inside of the box 1, a circuit breaker 6 is arranged on one side of the DC surge protector 7, a monitor 10 is arranged on the side of the DC surge protector 7 away from the circuit breaker 6, a DC fuse 8 is arranged on the lower side of the monitor 10, a lightning arrester 9 is arranged on one side of the DC fuse 8, and a wiring terminal 11 is arranged on the lower side of the box 1, and the wiring terminal 11 can be connected to the DC power line.

[0019] In this embodiment, the rain cover 12 is welded to the box body 1 , the rubber strip 14 is glued to the box body 1 , and the fixed ear plate 4 is welded to the box body 1 .

[0020] In this embodiment, the box door 2 is connected to the left side wall of the box body 1 via a hinge, and the sealing strip 13 is glued to the box body 1 .

[0021] In this embodiment, the monitor 10, the circuit breaker 6, the DC surge protector 7 and the lightning arrester 9 are all connected to the box 1 by screws.

[0022] When in use, the input line and the output line of the DC power supply are connected to the terminal 11 respectively, so that the photovoltaic power generation can be transmitted to the junction box for junction processing. The rain cover 12 can protect the upper side of the box body 1 from rain. The rubber strip 14 can provide flexible protection between the box body 1 and the wall to prevent the box body 1 from being damaged due to hard squeezing. The sealing strip 13 can seal the connection position between the box door 2 and the box body 1 to prevent dust from entering the box body 1.

Claims

1. A photovoltaic DC combiner box, comprising a box body (1), a rain cover (12) is arranged on the upper side of the box body (1), and a box door (2) is arranged on the front side of the box body (1), characterized in that: A rubber strip (14) is arranged on the outside of the rear side wall of the box body (1), two upper and lower fixing ear plates (4) are arranged at the rear ends of the left and right side walls of the box body (1), a sealing rubber strip (13) is arranged at the contact position between the box body (1) and the box door (2), a label card slot (5) is arranged on the outer side of the box door (2), and a box lock (3) is arranged between the box door (2) and the right side wall of the box body (1); A DC surge protector (7) is arranged inside the box (1), a circuit breaker (6) is arranged on one side of the DC surge protector (7), a monitor (10) is arranged on the side of the DC surge protector (7) away from the circuit breaker (6), a DC fuse (8) is arranged on the lower side of the monitor (10), a lightning arrester (9) is arranged on one side of the DC fuse (8), and a wiring terminal (11) is arranged on the lower side of the box (1).

2. A photovoltaic DC combiner box according to claim 1, characterized in that: The rain cover (12) is welded to the box body (1), the rubber strip (14) is glued to the box body (1), and the fixed ear plate (4) is welded to the box body (1).

3. A photovoltaic DC combiner box according to claim 1, characterized in that: The box door (2) is connected to the left side wall of the box body (1) via a hinge, and the sealing strip (13) is glued to the box body (1).

4. A photovoltaic DC combiner box according to claim 3, characterized in that: The monitor (10), the circuit breaker (6), the DC surge protector (7) and the lightning arrester (9) are all connected to the box (1) via screws.

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