Photovoltaic junction box

Abstract

The utility model belongs to the technical field of photovoltaic junction boxes, and particularly relates to a photovoltaic junction box which comprises a box body. A box cover is arranged on the top surface of the box body; the inner bottom surface of the box body is fixedly connected with a placement groove; a conductive block is slidably connected into the placement groove; a groove is formed in the conductive block; a diode is fixedly connected in the groove; an electric cable is arranged at the end part of the conductive block; the inner side wall of the box body is fixedly connected with a clamping block; a first baffle can rotate towards the bottom surface in the box body while a nut is loosened and rotated by adjusting the nut, and then a breathable net is pulled out by holding a handle, so that the drying agent enters the storage box after the breathable net is pulled out, and the drying agent can be adsorbed to a humid position through the breathable net; the problem that electronic components in the junction box are corroded by moisture in the junction box is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of photovoltaic junction boxes, and specifically relates to a photovoltaic junction box. Background Art

[0002] The photovoltaic junction box is an important component in the solar photovoltaic system. It is located between the solar cell module and the solar charging control device. Its main function is to connect and protect the solar photovoltaic module, and connect the electricity generated by the solar cell to the external circuit. The performance of the photovoltaic junction box directly affects the stability and safety of the entire photovoltaic system.

[0003] There are certain drawbacks in the existing photovoltaic junction boxes during use. The traditional junction box clamping rings are inconvenient to disassemble and assemble, not durable, and easily damaged. The buffering ability of the junction box is too poor, and it is easy to cause the connection between the inside of the junction box and the cable to be disconnected due to external force during use, and the connection is bent and broken due to long-term bending.

[0004] Therefore, the utility model provides a photovoltaic junction box. Summary of the Utility Model

[0005] In order to make up for the deficiencies of the existing technology and solve at least one problem proposed in the background art, a photovoltaic junction box is proposed.

[0006] The technical solution adopted by the utility model to solve its technical problems is as follows: A photovoltaic junction box of the utility model includes a box body; a box cover is provided on the top surface of the box body; a placement groove is fixedly connected to the bottom surface inside the box body; a conductive block is slidably connected inside the placement groove; a groove is opened inside the conductive block; a diode is fixedly connected inside the groove; a wire and cable is provided at the end of the conductive block; a clamping block is fixedly connected to the inner side wall of the box body; a clamping ring is provided on the top surface of the clamping block; bolts are rotatably connected to both ends of the clamping ring; a threaded pipe is fixedly connected to the side wall of the box body; a first connector is threadedly connected to the threaded pipe; a second connector is fixedly connected to the end of the wire and cable. The wire and cable is connected to the side end of the conductive block, and the wire and cable can be reinforced by the clamping ring, so as to avoid the disconnection of the connection between the cables due to external force and the bending and breaking of the connection due to long-term bending.

[0007] Preferably, a storage box is fixedly connected to the inner side wall of the box body; a sliding groove is opened at the top of the storage box; a breathable net is slidably connected in the middle of the sliding groove; a handle is fixedly connected to the side wall of the breathable net; an adjusting nut is rotatably connected to the side end of the breathable net; a first baffle is rotatably connected to the middle of the adjusting nut. When the inside of the box body gets damp, the breathable net can be pulled out to put the desiccant into the storage box, which can play a role in dehumidification. At the same time, it reduces the corrosion of the internal components due to the dampness inside the box body, thereby affecting the performance of the components, and the desiccant inside the storage box can be easily replaced.

[0008] Preferably, a fixing column is fixedly connected to the inner bottom surface of the box body; a spring is fixedly connected to the top of the fixing column; the bottom of the spring is rotatably connected to a second baffle, and the second baffle is fixedly connected to the spring, effectively avoiding the situation that the performance of the conductive block deteriorates or even leakage occurs due to the loosening or dropping of the conductive block.

[0009] Preferably, a plurality of first heat dissipation holes are formed in the side walls at both ends of the box body; a plurality of second heat dissipation holes are symmetrically formed in the inner bottom surface of the box body, effectively avoiding the situation that the performance deteriorates or is damaged due to the temperature generated when the diode is working.

[0010] Preferably, a buckle is provided on the side wall of the box body; the buckle is sleeved on a fixing block, and the fixing block is fixed on the side wall of the box body, effectively avoiding the situation that the junction box is opened during operation, thereby affecting its operation.

[0011] Preferably, a sealing ring is fixedly connected to the top surface of the box body; the sealing ring is made of a flexible material, effectively reducing the protection of the inside of the box body through the sealing ring in case of bad weather, and also preventing dust from entering the inside.

[0012] Preferably, a plurality of protective corner strips are fixedly connected to the four sides of the box body and the box cover; the protective corner strips are made of a flexible material, and the protective corner strips can protect the edges and corners of the device, effectively avoiding damage to the device and reducing the loss rate at the same time.

[0013] The beneficial effects of the present utility model are as follows:

[0014] 1. For a photovoltaic junction box of the present utility model, when the adjusting nut is loosened and rotated, the first baffle will rotate towards the inner bottom surface of the box body, and then the breathable net is pulled out by holding the handle, realizing that after the breathable net is pulled out, the desiccant enters the inside of the storage box, and the desiccant will adsorb the humid position through the breathable net, solving the corrosion of the internal electronic components of the junction box caused by the humidity inside the junction box.

[0015] 2. For a photovoltaic junction box of the present utility model, it is pulled up by a spring, and after being pulled up, the second baffle will be squeezed by the spring and tightened towards the box cover, realizing that the conductive block is further fixed by the second baffle and the spring to increase stability, solving the situation that the performance of the conductive block deteriorates or even leakage occurs due to the loosening or dropping of the conductive block. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present utility model will be further described below with reference to the accompanying drawings.

[0017] Figure 1 is a perspective view of the present utility model;

[0018] Figure 2 It is a schematic structural diagram of the diode in the present utility model;

[0019] Figure 3 It is a schematic structural diagram of the conductive block in the present utility model;

[0020] Figure 4 It is a schematic structural diagram of the ventilation net in the present utility model.

[0021] Legend Explanation:

[0022] 1. Box body; 11. Box cover; 12. Conductive block; 13. Groove; 14. Diode; 15. Electric wire cable; 16. Clamping block; 17. Snap ring; 18. Bolt; 19. First connector; 110. Second connector; 111. Threaded tube; 112. Placing groove; 2. Storage box; 21. Slide groove; 22. Ventilation net; 23. Handle; 24. Adjusting nut; 25. First baffle; 3. Fixed column; 31. Spring; 32. Second baffle; 4. First heat dissipation hole; 41. Second heat dissipation hole; 5. Buckle; 51. Fixed block; 6. Sealing ring; 7. Protective corner strip. Specific Embodiment

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the protection scope of the present utility model.

[0024] The following gives specific embodiments.

[0025] Such as Figures 1 to 3As shown in the figure, a photovoltaic junction box according to an embodiment of the present utility model includes a box body 1; a box cover 11 is provided on the top surface of the box body 1; a placement groove 112 is fixedly connected to the inner bottom surface of the box body 1; a conductive block 12 is slidably connected inside the placement groove 112; a groove 13 is formed inside the conductive block 12; a diode 14 is fixedly connected inside the groove 13; an electric wire cable 15 is provided at the end of the conductive block 12; a clamping block 16 is fixedly connected to the inner side wall of the box body 1; a clamping ring 17 is provided on the top surface of the clamping block 16; both ends of the clamping ring 17 are rotatably connected to a bolt 18; a threaded pipe 111 is fixedly connected to the side wall of the box body 1; a first connector 19 is threadedly connected to the threaded pipe 111; a second connector 110 is fixedly connected to the end of the electric wire cable 15. During operation, when using this device, first open the box cover 11, then connect the second connector 110 to the corresponding device. There is an electric wire cable 15 at the side end of the second connector 110. The electric wire cable 15 is connected to the end of the conductive block 12 inside the box body 1 through the first connector 19, so that the current can be led out of the conductive block 12 through the electric wire cable 15 and effectively transmitted to the output end of the junction box. When the diode 14 is working and the local performance of the photovoltaic panel is degraded due to other reasons, the current can bypass these degraded parts and continue to flow to other normally working photovoltaic panels, thereby reducing the decrease in the power generation efficiency of the entire photovoltaic system. The conductive block 12 can be placed inside the placement groove 112 to improve the stability of the conductive block 12 and prevent it from easily deviating from the designated position. When the electric wire cable 15 is connected to the side end of the conductive block 12, the electric wire cable 15 can be reinforced through the clamping ring 17. When the first connector 19 is connected to the threaded pipe 111, the first connector 19 can be placed on the threaded pipe 111 and rotated to complete the connection. In this step, when the electric wire cable 15 is connected to the side end of the conductive block 12, the electric wire cable 15 can be reinforced through the clamping ring 17, thereby avoiding the disconnection of the connection between the cables due to external force and the bending and breakage of the connection due to long-term bending.

[0026] As Figures 1 to 4As shown, the storage box 2 is fixedly connected to the inner side wall of the box body 1; a slide groove 21 is opened on the top of the storage box 2; a breathable net 22 is slidably connected to the middle of the slide groove 21; a handle 23 is fixedly connected to the side wall of the breathable net 22; an adjusting nut 24 is rotatably connected to the side end of the breathable net 22; a first baffle 25 is rotatably connected to the middle of the adjusting nut 24. During operation, when using the device, moisture may appear inside the box body 1, which will have an adverse effect on the performance and life of the junction box. When in use, first turn the adjusting nut 24 to loosen it. At the same time, the first baffle 25 will move vertically toward the top surface of the slide groove 21. Go straight down, and then pull out the breathable mesh 22 by holding the handle 23. While pulling it out, the side end of the breathable mesh 22 will slide inside the slide groove 21. After the breathable mesh 22 is pulled out, put the desiccant into the storage box 2. The desiccant will absorb the moist position through the breathable mesh 22, reducing the corrosion of the electronic components inside the junction box caused by moisture inside the junction box. In this step, when moisture appears inside the box body 1, the breathable mesh 22 can be pulled out and the desiccant can be put into the storage box 2 to remove moisture. At the same time, it reduces the corrosion of internal components caused by moisture inside the box body 1 and affects the performance of the components. The desiccant inside the storage box 2 can also be easily replaced.

[0027] like Figures 1 to 3 As shown, the bottom surface of the inner part of the box body 1 is fixedly connected to a fixing column 3; the top of the fixing column 3 is fixedly connected to a spring 31; the bottom of the spring 31 is rotatably connected to a second baffle 32, and the second baffle 32 is fixedly connected to the spring 31. During operation, the conductive block 12 may fall or become loose, affecting the working state of the conductive block 12, thereby causing performance degradation or even leakage. In order to reduce this situation, the spring 31 is pulled up. After being pulled up, the second baffle 32 will be squeezed by the spring 31 and tightened toward the box cover 11, and then rotated to the top surface of the conductive block 12 and placed on it, so that the conductive block 12 can be further fixed to increase stability. The second baffle 32 is made of insulating material so there will be no current. This step effectively avoids the situation where the conductive block 12 becomes loose or falls, thereby causing performance degradation or even leakage of the conductive block 12.

[0028] like Figures 1 to 2As shown in the figure, multiple first heat dissipation holes 4 are provided on the side walls at both ends of the box body 1; multiple second heat dissipation holes 41 are symmetrically provided on the bottom surface inside the box body 1. During operation, the diode 14 generates heat during operation, which may lead to performance degradation or damage. The first heat dissipation holes 4 and the second heat dissipation holes 41 can help the diode 14 dissipate heat effectively. By improving the heat dissipation efficiency of the first heat dissipation holes 4 and the second heat dissipation holes 41, the temperature generated by the diode 14 during operation is reduced, thereby keeping the diode 14 in the best working state and improving the overall power generation efficiency of the photovoltaic system. This step effectively avoids the situation of performance degradation or damage caused by the temperature generated by the diode 14 during operation.

[0029] As Figure 1 shown in the figure, a buckle 5 is provided on the side wall of the box body 1; the buckle 5 is sleeved on the fixing block 51, and the fixing block 51 is fixed on the side wall of the box body 1. During operation, when using this device, first rotate the buckle 5 towards the top surface of the box cover 11. During the rotation process, the buckle 5 is separated from the fixing block 51, and the box body 1 can be opened. Then, open the junction box to use it. After use, close the box body 1 through the box cover 11 and then rotate the buckle 5 towards the bottom surface of the box body 1 to close it, further fixing the junction box to reduce the situation of opening during operation. This step effectively avoids the situation of the junction box opening during operation, which may affect its work.

[0030] As Figures 1 to 2 shown in the figure, a sealing ring 6 is fixedly connected to the top surface of the box body 1; the sealing ring 6 is made of a flexible material. During operation, when using this device outdoors in rainy days, rainwater entering easily causes damage to the components inside the box body 1. By providing the sealing ring 6, the sealing performance of the wiring can be improved, preventing rainwater and external impurities from entering the inside of the box body 1. At the same time, it can also prevent dust from entering, thereby protecting the components inside the box body 1 and increasing the service life of the components inside the box body 1. This step effectively reduces the protection of the inside of the box body 1 by the sealing ring 6 in case of bad weather and can also prevent dust from entering the inside.

[0031] As Figures 1 to 2 shown in the figure, a plurality of protective corner strips 7 are fixedly connected to the four sides of the box body 1 and the box cover 11; the protective corner strips 7 are made of a flexible material. During operation, when using this device outdoors, it is easy to bump into the edges and corners of the device, resulting in device damage. By providing a plurality of protective corner strips 7, the device can be protected when using this device. In this step, the protective corner strips 7 can effectively protect the edges and corners of the device, avoiding damage to the device and reducing the loss rate at the same time.

[0032] When working, when using this device, first open the box cover 11, and then connect the second connector 110 to the corresponding device. There is an electric wire cable 15 at the side end of the second connector 110. The electric wire cable 15 is connected to the end of the conductive block 12 inside the box body 1 through the first connector 19. Then, the current can be led out from the conductive block 12 through the electric wire cable 15, and the current can be effectively transmitted to the output end of the junction box. When the diode 14 is working and the local performance of the photovoltaic panel part decreases due to other reasons, the current can bypass these parts with decreased performance and continue to flow to other normally working photovoltaic panels, thereby reducing the decrease in the power generation efficiency of the entire photovoltaic system. The conductive block 12 can be placed inside the placement groove 112 to improve the stability of the conductive block 12 and prevent it from easily deviating from the designated position. When the electric wire cable 15 is connected to the side end of the conductive block 12, the electric wire cable 15 can be reinforced by the snap ring 17. When the first connector 19 is connected to the threaded tube 111, the first connector 19 can be placed on the threaded tube 111 and rotated to complete the connection. In this step, when the electric wire cable 15 is connected to the side end of the conductive block 12, the electric wire cable 15 can be reinforced by the snap ring 17, thereby avoiding the disconnection of the cable connection due to external force and the bending and breaking of the connection due to long-term bending. When using this device, the inside of the box body 1 may become damp, which will have an adverse impact on the performance and lifespan of the junction box. When using it, first rotate the adjusting nut 24 to loosen it. While rotating, the first baffle 25 will move vertically towards the top surface of the sliding groove 21. Then, pull out the breathable net 22 by holding the handle 23. While pulling out, the side end of the breathable net 22 will slide inside the sliding groove 21. After the breathable net 22 is pulled out, the desiccant enters the inside of the storage box 2. The desiccant will adsorb the damp position through the breathable net 22, reducing the corrosion of the internal electronic components of the junction box caused by dampness inside the box. In this step, when the inside of the box body 1 becomes damp, the breathable net 22 can be pulled out and the desiccant can be put into the storage box 2 to play a moisture removal role, while reducing the corrosion of the internal components caused by dampness inside the box body 1 and thus affecting the performance of the components. The desiccant inside the storage box 2 can also be easily replaced. When the conductive block 12 is working, it may fall or become loose, affecting the working state of the conductive block 12 and even leading to performance degradation or leakage. To reduce this situation, pull up the spring 31. After pulling up, the second baffle 32 will be squeezed by the spring 31 and shrink towards the box cover 11. Then, rotate it to the top surface of the conductive block 12 and place it on it, thereby further fixing the conductive block 12 and increasing its stability. The second baffle 32 is made of insulating material, so there will be no current situation. In this step, it effectively avoids the performance degradation or leakage of the conductive block 12 caused by the loosening or falling of the conductive block 12. When the diode 14 is working, it will generate heat, which may lead to performance degradation or damage. The first heat dissipation hole 4 and the second heat dissipation hole 41 can help the diode 14 dissipate heat effectively.The heat dissipation efficiency is improved through the first heat dissipation hole 4 and the second heat dissipation hole 41, thereby reducing the temperature generated by the diode 14 during operation, so as to keep the diode 14 in the best working state and improve the overall power generation efficiency of the photovoltaic system. In this step, the situation that the performance is reduced or damaged due to the temperature generated by the diode 14 during operation is effectively avoided. When using this device, first rotate the buckle 5 towards the top surface of the box cover 11. During the rotation process, the buckle 5 is separated from the fixed block 51, and then the box body 1 can be opened. Subsequently, the junction box can be opened for use. After use, close the box body 1 through the box cover 11 and then rotate the buckle 5 towards the bottom surface of the box body 1 to close it, further fixing the junction box to reduce the situation of opening during work. In this step, the situation that the junction box is opened during work and thus affects its work is effectively avoided. When using this device outdoors in rainy days, rainwater entering easily causes damage to the components inside the box body 1. By providing a sealing ring 6, the wiring tightness can be improved, preventing rainwater and external impurities from entering the inside of the box body 1. At the same time, it can also prevent dust from entering, thereby protecting the components inside the box body 1 and increasing the service life of the components inside the box body 1. In this step, when encountering bad weather, the sealing ring 6 can effectively protect the inside of the box body 1 and prevent dust from entering the inside. When using this device outdoors, it is easy to bump into the edges and corners of the device, resulting in damage. By providing a plurality of protective corner strips 7, the protective corner strips 7 can play a protective role for the device during use. In this step, the protective corner strips 7 can effectively protect the edges and corners of the device, avoiding damage to the device and reducing the loss rate at the same time.

[0033] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A photovoltaic junction box, comprising a box body (1); characterized in that: The top surface of the box body (1) is provided with a box cover (11); the inner bottom surface of the box body (1) is fixedly connected with a placement groove (112); a conductive block (12) is slidably connected inside the placement groove (112); a groove (13) is formed inside the conductive block (12); a diode (14) is fixedly connected inside the groove (13); a wire cable (15) is provided at the end of the conductive block (12); a clamping block (16) is fixedly connected to the inner side wall of the box body (1); a clamping ring (17) is provided on the top surface of the clamping block (16); bolts (18) are rotatably connected to both ends of the clamping ring (17); a threaded pipe (111) is fixedly connected to the side wall of the box body (1); a first connector (19) is threadedly connected to the threaded pipe (111); a second connector (110) is fixedly connected to the end of the wire cable (15).

2. The photovoltaic junction box according to claim 1, characterized in that: A storage box (2) is fixedly connected to the inner side wall of the box body (1); a sliding groove (21) is formed at the top of the storage box (2); a ventilation net (22) is slidably connected to the middle of the sliding groove (21); a handle (23) is fixedly connected to the side wall of the ventilation net (22); an adjusting nut (24) is rotatably connected to the side end of the ventilation net (22); a first baffle (25) is rotatably connected to the middle of the adjusting nut (24).

3. The photovoltaic junction box according to claim 2, characterized in that: A fixed column (3) is fixedly connected to the inner bottom surface of the box body (1); a spring (31) is fixedly connected to the top of the fixed column (3); a second baffle (32) is rotatably connected to the bottom of the spring (31), and the second baffle (32) is fixedly connected to the spring (31).

4. The photovoltaic junction box according to claim 3, wherein: A plurality of first heat dissipation holes (4) are formed in both side walls of the box body (1); a plurality of second heat dissipation holes (41) are symmetrically formed in the inner bottom surface of the box body (1).

5. A photovoltaic junction box according to claim 4, characterized in that: A buckle (5) is provided on the side wall of the box body (1); the buckle (5) is sleeved on a fixed block (51), and the fixed block (51) is fixed on the side wall of the box body (1).

6. The photovoltaic junction box according to claim 5, wherein: A sealing ring (6) is fixedly connected to the top surface of the box body (1); the sealing ring (6) is made of a flexible material.

7. The photovoltaic junction box according to claim 6, characterized in that: A plurality of protective corner strips (7) are fixedly connected to the four sides of the box body (1) and the box cover (11); the protective corner strips (7) are made of a flexible material.

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