Photovoltaic module junction box

Abstract

The utility model belongs to the field of photovoltaic modules, in particular to a photovoltaic module junction box, which comprises a junction shell, a top cover is arranged at the top of the junction shell, two positioning sleeves are fixedly mounted at the bottom of the top cover, and positioning mechanisms are arranged on the inner sides of the two positioning sleeves. Two positioning metal blocks are fixedly mounted on the inner side of the wiring shell, and the two positioning mechanisms respectively clamp the corresponding positioning metal blocks; and a plurality of wire clamping mechanisms are arranged on the outer side of the wiring shell. During installation, the top cover and the shell can be assembled through the positioning mechanism, when adjustment is needed, the positioning mechanism can be disassembled conveniently and rapidly, and when debugging is completed, a worker can connect the top cover and the shell through the positioning mechanism and then fix the top cover and the shell through bolts. According to the junction box, the connection tightness and stability can be improved, and after the junction box is installed, the connecting wires can be limited and arranged, so that the attractiveness is improved while the wire bodies are protected.

Description

Technical Field

[0001] This utility model relates to the field of photovoltaic module technology, and in particular to a photovoltaic module junction box. Background Technology

[0002] The junction box is an important component of solar modules. Its main function is to connect the electricity generated by the solar cells to the external circuit. The junction box is bonded to the back sheet of the solar module with silicone. The lead wires of the solar module are connected to the lead terminals inside the junction box. The connection is then made to the outside through the cables and connectors in the junction box. The junction box usually contains multiple bypass diodes, which are connected in reverse parallel across the two ends of the battery string. This can effectively prevent damage to the battery cells caused by hot spot effect.

[0003] However, existing photovoltaic module junction boxes often use bolts to directly fix the outer shell and top cover during installation. However, during installation, workers often need to adjust the diodes inside the junction box multiple times. Each time, the connection mechanism needs to be disassembled before the back panel can be opened, which is cumbersome and greatly affects the installation efficiency. Utility Model Content

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A photovoltaic module junction box includes a junction shell, a top cover on the top of the junction shell, two positioning sleeves fixedly installed at the bottom of the top cover, a positioning mechanism on the inner side of each positioning sleeve, two positioning metal blocks fixedly installed on the inner side of the junction shell, and the two positioning mechanisms clamping the corresponding positioning metal blocks respectively; and multiple wire clamping mechanisms on the outer side of the junction shell.

[0006] Specifically, the positioning mechanism includes a positioning shaft, two limiting metal blocks, a return spring, and a positioning disc. The positioning shaft is slidably installed on the inner side of the positioning sleeve, and two limiting metal blocks are fixedly installed on the outer side of the positioning shaft. The positioning disc is rotatably installed at the bottom of the positioning shaft, and a return spring is fixedly installed at the top of the positioning disc. The other end of the return spring is connected to the inner wall of the positioning sleeve.

[0007] Specifically, the inner wall of the positioning sleeve has two positioning grooves, and the two limiting metal blocks are respectively adapted to the corresponding positioning grooves.

[0008] Specifically, the bottom of the positioning plate is provided with a linkage groove, and two linkage columns are fixedly installed on one inner wall of the linkage groove. A crank is rotatably sleeved on each of the two linkage columns, and a connecting column is fixedly installed through one side of each of the two cranks.

[0009] Specifically, two flipping posts are fixedly installed on the inner side of the positioning sleeve, and a clamp is rotatably fitted on each of the two flipping posts. The two connecting posts rotatably pass through the corresponding clamps. Two slots are opened on the outer side of the positioning metal block, and the two clamps are adapted to the corresponding slots, so that the two clamps can clamp the same positioning metal block.

[0010] Specifically, the wire clamping mechanism includes a wire clamping base, a wire clamp, and a wire management shaft. The wire clamping base is fixedly installed on one side of the wiring housing, and the wire management shaft slides through one side of the wire clamping base. A wire clamp is fixedly sleeved on the wire management shaft.

[0011] Specifically, a limiting ratchet is fixedly installed on the inner left side of the clamp base, and a fixing ratchet is fixedly installed on one side of the clamp. The limiting ratchet and the fixing ratchet are compatible, so that the fixing ratchet can be prevented from turning back by the limiting ratchet.

[0012] Specifically, a support spring is sleeved on the wire-guiding shaft, and the other end of the support spring is connected to the inner right wall of the wire clamping base.

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

[0014] (1) A photovoltaic module junction box of this utility model can be assembled with a positioning mechanism during installation. When adjustment is required, the positioning mechanism can be disassembled conveniently and quickly. When the debugging is completed, the staff can connect the top cover and the outer shell through the positioning mechanism and then fix them with bolts, which can increase the tightness and stability of the connection.

[0015] (2) The photovoltaic module junction box of this utility model can limit and organize the connecting wires after the junction box is installed by setting multiple wire clamping mechanisms, which protects the wires and increases the aesthetics. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a photovoltaic module junction box proposed in this utility model;

[0017] Figure 2 This is a three-dimensional sectional view of a photovoltaic module junction box proposed in this utility model.

[0018] Figure 3 This is a three-dimensional cross-sectional view of the positioning mechanism for a photovoltaic module junction box proposed in this utility model.

[0019] Figure 4 This is a three-dimensional structural disassembly diagram of the positioning mechanism of a photovoltaic module junction box proposed in this utility model;

[0020] Figure 5 This is a three-dimensional cross-sectional view of the clamping mechanism of a photovoltaic module junction box proposed in this utility model.

[0021] In the diagram: 1. Wiring housing; 2. Top cover; 3. Positioning metal block; 4. Positioning shaft; 5. Limiting metal block; 6. Positioning sleeve; 7. Return spring; 8. Positioning disc; 9. Positioning groove; 10. Linkage column; 11. Crank; 12. Connecting column; 13. Flip column; 14. Clamp; 15. Cable clamp base; 16. Cable clamp; 17. Cable management shaft; 18. Support spring; 19. Fixing ratchet; 20. Limiting ratchet. Detailed Implementation

[0022] Reference Figure 1-5 A photovoltaic module junction box includes a junction shell 1, a top cover 2 on the top of the junction shell 1, two positioning sleeves 6 fixedly installed at the bottom of the top cover 2, a positioning mechanism on the inner side of each of the two positioning sleeves 6, two positioning metal blocks 3 fixedly installed on the inner side of the junction shell 1, and the two positioning mechanisms clamping the corresponding positioning metal blocks 3 respectively; and multiple wire clamping mechanisms on the outer side of the junction shell 1.

[0023] In this embodiment, the positioning mechanism includes a positioning shaft 4, two limiting metal blocks 5, a return spring 7, and a positioning disk 8. The positioning shaft 4 is slidably installed on the inner side of the positioning sleeve 6. Two limiting metal blocks 5 are fixedly installed on the outer side of the positioning shaft 4. The positioning disk 8 is rotatably installed on the bottom of the positioning shaft 4. The return spring 7 is fixedly installed on the top of the positioning disk 8. The other end of the return spring 7 is connected to the inner wall of the positioning sleeve 6.

[0024] In this embodiment, two positioning grooves 9 are provided on the inner wall of the positioning sleeve 6, and the two limiting metal blocks 5 are respectively adapted to the corresponding positioning grooves 9.

[0025] In this embodiment, a linkage groove is provided at the bottom of the positioning disk 8. Two linkage columns 10 are fixedly installed on the inner wall of one side of the linkage groove. A crank 11 is rotatably sleeved on each of the two linkage columns 10. A connecting column 12 is fixedly installed through one side of each of the two cranks 11.

[0026] In this embodiment, two flipping posts 13 are fixedly installed on the inner side of the positioning sleeve 6. Each of the two flipping posts 13 is rotatably fitted with a clip 14. The two connecting posts 12 rotatably pass through the corresponding clips 14. Two slots are opened on the outer side of the positioning metal block 3. The two clips 14 are adapted to the corresponding slots, so that the two clips 14 can clamp the same positioning metal block 3.

[0027] In this embodiment, the wire clamping mechanism includes a wire clamping base 15, a wire clamp 16, and a wire management shaft 17. The wire clamping base 15 is fixedly installed on one side of the wiring housing 1, and the wire management shaft 17 slides through one side of the wire clamping base 15. The wire clamp 16 is fixedly sleeved on the wire management shaft 17.

[0028] In this embodiment, a limiting ratchet 20 is fixedly installed on the inner left side of the wire clamp base 15, and a fixing ratchet 19 is fixedly installed on one side of the wire clamp 16. The limiting ratchet 20 and the fixing ratchet 19 are compatible, so that the fixing ratchet 19 can be prevented from turning backward by the limiting ratchet 20.

[0029] In this embodiment, a support spring 18 is sleeved on the wire-guiding shaft 17, and the other end of the support spring 18 is connected to the inner right side wall of the wire clamping base 15.

[0030] Working Principle: During junction box installation, the operator attaches the junction box housing 1 to the backplate of the solar module using silicone. Then, the operator aligns the top cover 2 with the junction box housing 1, ensuring that the multiple clips 14 of the two positioning mechanisms on the top cover 2 are aligned with the corresponding slots on the positioning metal blocks 3. The operator then combines the top cover 2 with the junction box housing 1 and presses down on the two positioning shafts 4. The positioning shafts 4 slide downwards under pressure, causing the two limiting metal blocks 5 to move. Simultaneously, the movement of the positioning shafts 4 drives the positioning disc 8, which in turn drives the two linkage columns 10. The movement of the two linkage columns 10 drives the corresponding cranks 11, which in turn, through the corresponding connecting columns 12, drive the corresponding clips 14 to move. Since both clips 14 are rotatably mounted on the corresponding flip columns 13, and both flip columns 13 are fixedly installed inside the positioning sleeve 6, the two clips 14 can only rotate around the flip columns 13. The two clips 14 flip and engage with the corresponding slots, clamping the same positioning metal block 3 and completing the fixation. Then, the operation continues... The positioning shaft 4 rotates, causing two limiting metal blocks 5 to rotate. After the two limiting metal blocks 5 rotate to the designated position, the operator releases the pressed positioning shaft 4. At this time, the return spring 7 drives the positioning plate 8 to move upward, and the two limiting metal blocks 5 are then engaged in the corresponding positioning grooves 9, completing the positioning. The operator can then adjust the solar panels, etc. After the overall adjustment is completed, the operator can fix the top cover 2 and the wiring housing 1 with bolts. Then, the connecting wires are combed and secured into the corresponding clamping mechanisms. The operator pulls the cable management shaft 17 and then rotates it counterclockwise. At this time, the fixed ratchet 19 and the limiting ratchet 20 are separated and will not interfere with each other. Then the operator releases the cable management shaft 17, and the support spring 18 drives the cable management shaft 17 and the cable clamp 16 to reset. Then the connecting cable is placed into the cable clamp base 15. Then the operator rotates the cable management shaft 17, which drives the cable clamp 16 to rotate and clamp and limit the connecting cable. At this time, the fixed ratchet 19 and the limiting ratchet 20 are in contact and interfere with each other, which helps to prevent the cable clamp 16 from reversing.

[0031] The technological advancements of this invention compared to existing technologies are as follows: during installation, the top cover 2 and the wiring housing 1 can be assembled first using a positioning mechanism. When adjustments are needed, the positioning mechanism can be easily and quickly disassembled. After debugging, workers can connect the top cover 2 and the wiring housing 1 using the positioning mechanism and then fix them with bolts. This increases the tightness and stability of the connection. Furthermore, after the junction box is installed, the connecting wires can be guided and positioned, protecting the wires while also enhancing the aesthetics.

Claims

1. A photovoltaic module junction box, characterized in that, The device includes a wiring housing (1), the top of which is provided with a top cover (2), and two positioning sleeves (6) are fixedly installed at the bottom of the top cover (2). The inner side of each of the two positioning sleeves (6) is provided with a positioning mechanism. The inner side of the wiring housing (1) is fixedly installed with two positioning metal blocks (3), and the two positioning mechanisms clamp the corresponding positioning metal blocks (3) respectively. The outer side of the wiring housing (1) is provided with multiple wire clamping mechanisms.

2. A photovoltaic module junction box according to claim 1, characterized in that, The positioning mechanism includes a positioning shaft (4), two limiting metal blocks (5), a return spring (7), and a positioning disc (8). The positioning shaft (4) is slidably installed on the inner side of the positioning sleeve (6). Two limiting metal blocks (5) are fixedly installed on the outer side of the positioning shaft (4). The positioning disc (8) is rotatably installed on the bottom of the positioning shaft (4). The return spring (7) is fixedly installed on the top of the positioning disc (8). The other end of the return spring (7) is connected to the inner wall of the positioning sleeve (6).

3. A photovoltaic module junction box according to claim 2, characterized in that, The inner wall of the positioning sleeve (6) has two positioning grooves (9), and the two limiting metal blocks (5) are respectively adapted to the corresponding positioning grooves (9).

4. A photovoltaic module junction box according to claim 3, characterized in that, The bottom of the positioning plate (8) is provided with a linkage groove, and two linkage columns (10) are fixedly installed on the inner wall of one side of the linkage groove. Cranks (11) are rotatably sleeved on the two linkage columns (10), and connecting columns (12) are fixedly installed through one side of the two cranks (11).

5. A photovoltaic module junction box according to claim 4, characterized in that, The inner side of the positioning sleeve (6) is fixedly installed with two flipping columns (13), and each of the two flipping columns (13) is rotatably fitted with a clip (14). The two connecting columns (12) respectively rotate through the corresponding clips (14). The outer side of the positioning metal block (3) has two slots, and the two clips (14) are respectively adapted to the corresponding slots.

6. A photovoltaic module junction box according to claim 1, characterized in that, The wire clamping mechanism includes a wire clamping base (15), a wire clamp (16), and a wire management shaft (17). The wire clamping base (15) is fixedly installed on one side of the wiring housing (1). The wire management shaft (17) slides through one side of the wire clamping base (15). The wire clamp (16) is fixedly sleeved on the wire management shaft (17).

7. A photovoltaic module junction box according to claim 6, characterized in that, A limiting ratchet (20) is fixedly installed on the left inner wall of the clamp base (15), and a fixing ratchet (19) is fixedly installed on one side of the clamp (16). The limiting ratchet (20) and the fixing ratchet (19) are compatible.

8. A photovoltaic module junction box according to claim 7, characterized in that, A support spring (18) is fitted on the wire-guiding shaft (17), and the other end of the support spring (18) is connected to the inner right side wall of the wire clamping base (15).

Images