A cable and copper busbar assembly for photovoltaic combiner boxes

Abstract

The present invention discloses a cable and copper busbar assembly for a photovoltaic combiner box, specifically relating to the technical field of photovoltaic combiner boxes, comprising a copper busbar and a cable, one end of the cable being fixedly connected to a terminal, a fixed shaft being fixedly installed on the top surface of the copper busbar, the terminal being movably sleeved on the outer wall of the fixed shaft, a movable column being fixedly installed on the top surface of the copper busbar, an insulating mounting plate being detachably installed on the top surface of the movable column, and a clamping column being fixedly installed on the bottom surface of the insulating mounting plate. The device effectively solves the problem that the current installation process of cables and copper busbars requires installation or removal one by one. By means of clamping, the removal or installation of all cables can be completed at one time, which is not only simple to operate but also time-saving and labor-saving. In addition, in order to avoid the inapplicability of the fixed shaft and to supplement the horizontal limitation work, abutment blocks can be used to abut the terminal, and then a pull ring can be used for removal. The structure is simple, and installation and removal are easy and quick.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic combiner boxes, and more particularly to a cable and copper busbar assembly for a photovoltaic combiner box. Background Art

[0002] A combiner box allows users to connect a certain number of photovoltaic cells of the same specifications in series to form photovoltaic strings, and then connect several photovoltaic strings in parallel to the photovoltaic combiner box. After the power is combined in the photovoltaic combiner box, it is used in conjunction with a controller, DC distribution cabinet, photovoltaic inverter, and AC distribution cabinet to form a complete photovoltaic power generation system and achieve grid connection with the mains.

[0003] The existing connection method of the cable and copper busbar of the photovoltaic combiner box has some defects, and the disassembly and installation operations are troublesome. According to a cable and copper busbar assembly for a photovoltaic combiner box with patent number CN 206293625U disclosed on the China Patent Network, it includes an insulator (1), a cable (2), a copper busbar (4), a screw fastener (5), and a screw fixing plate (3); wherein the cable (2) and the copper busbar (4) are fixed to the screw fixing plate (3) by the screw fastener (5). Due to the use of the screw fixing plate, the disadvantages of the installation method of the photovoltaic cable converging to the copper busbar are overcome, and the installation and disassembly are convenient, and the safety and reliability are significantly improved. At the same time, the safe and reliable operation of the large-scale photovoltaic power station system is also guaranteed.

[0004] But even so, this invention still has some defects. When disassembling, it still needs to be disassembled one by one, wasting workers' time and energy.

[0005] Therefore, there is an urgent need to provide a cable and copper busbar assembly for a photovoltaic combiner box. Summary of the Invention

[0006] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a cable and copper busbar assembly for a photovoltaic combiner box to solve the problem that the current installation process of the cables and copper busbars requires installation or removal one by one.

[0007] To solve the above technical problems, the present invention provides the following technical solutions: a cable and copper busbar assembly for a photovoltaic combiner box, comprising a busbar and a cable, one end of the cable is fixedly connected to a wiring terminal, the top surface of the busbar is fixedly installed with a fixed shaft, the wiring terminal is movably sleeved on the outer wall of the fixed shaft, the top surface of the busbar is fixedly installed with a movable column, the top surface of the movable column is detachably installed with an insulating mounting plate, the bottom surface of the insulating mounting plate is fixedly installed with a clamping column, the outer side of the clamping column is provided with a limiting hole, a disassembly valve is provided on one side of the busbar, a first fixing plate is fixedly installed on one side of the disassembly valve, the first fixing plate is rotatably installed on the inner wall of the busbar, a reset spring is fixedly connected to one side of the first fixing plate, a telescopic component is provided on the outside of the reset spring, one end of the reset spring is fixedly connected to a second fixing plate, a limiting block is fixedly installed on one side of the second fixing plate, and the limiting block is movable on the inner wall of the limiting hole.

[0008] Preferably, the movable column includes a hollow column, the inner wall of the hollow column is slidably mounted with a moving rod, the bottom of the moving rod is fixedly connected to a support spring, the bottom of the support spring is fixedly connected to the bottom surface of the inner cavity of the hollow column, and the top of the moving rod is clamped on the bottom surface of the insulating mounting plate.

[0009] Preferably, the telescopic assembly includes a stop column, a limiting groove is provided on the inner wall of the stop column, a telescopic block is slidably installed on the inner wall of the limiting groove, a telescopic rod is slidably installed on the inner wall of the stop column, one end of the telescopic rod is fixedly connected to a movable disk, and the outer wall of the movable disk is fixedly connected to the telescopic block.

[0010] Preferably, the interior of the fixed shaft is respectively provided with a first movable groove and a second movable groove, the first movable groove and the second movable groove are connected to each other, a fixed block is fixedly installed on the inner wall of the first movable groove, a fixed column is fixedly installed on one side of the fixed block, a resist column is slidably installed on the inner wall of the fixed column, and a resist block is provided at one end of the resist column.

[0011] Preferably, a pressure spring is fixedly installed on one side of the inner cavity of the fixed column, and the other end of the support column is fixedly connected to one end of the pressure spring.

[0012] Preferably, the other end of the support column is fixedly connected to a pull rope, the pull rope is located inside the pressure spring and extends to the outside of the fixed column. There are several pull ropes, and one end of several pull ropes is fixedly connected to a traction rope.

[0013] Preferably, the traction rope passes through the second movable groove to the bottom of the fixed shaft, and one end of the traction rope is fixedly connected to a pull ring.

[0014] Preferably, the block is in the shape of a hemisphere or a quadrangular prism.

[0015] The beneficial effects of the above technical solution of the present invention are as follows:

[0016] In the above scheme, by providing the insulating mounting plate, when installation is required, it is only necessary to sleeve the wiring terminals one by one on the fixed shaft, then cover the insulating mounting plate, move the clamping column downward, and squeeze the limit block, so that the limit block moves to the left, and finally the limit block enters the limit hole to complete the clamping connection. The fixed shaft abuts against the insulating mounting plate, and the position of the wiring terminals is limited. At this time, the cable is installed, saving installation time; not only that, when disassembling, it is only necessary to rotate the disassembly valve, which drives the limit block to rotate. The arc surface of the limit block faces downward, and with the force of the support spring, the insulating mounting plate is lifted up to complete the disassembly, which is simple and quick;

[0017] In the above scheme, in order to further complete the fixation of the cable and avoid the cable from loosening during use or the fixed shaft is not suitable for the cable terminal because the inner diameters of the cable terminal are different, a stop column and a stop block can be set on the outer wall of the fixed shaft. The elastic force of the pressure spring can be used to lift the stop block so that multiple stop blocks are in contact with the inner wall of the terminal. When disassembly is required, it is only necessary to pull the pull ring to move multiple stop columns at the same time, and the stop blocks begin to separate from the terminal, completing the disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a schematic diagram of the internal structure of the movable column of the present invention;

[0020] Figure 3 It is a schematic diagram of the overall structure of the present invention from a top view;

[0021] Figure 4 This is a schematic diagram of the limit block and clamping column structure of the present invention;

[0022] Figure 5 This is a schematic diagram of the internal structure of the telescopic assembly of the present invention;

[0023] Figure 6 This is a schematic cross-sectional view of the fixed shaft according to the second embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the internal structure of the fixing column of the present invention;

[0025] Figure 8 This is a schematic diagram of the external structure of the fixed shaft according to the second embodiment of the present invention.

[0026] [reference numerals]

[0027] 1. Busbar; 2. Insulation mounting plate; 3. Movable column; 4. Clamping column; 5. Fixed shaft; 6. Cable; 7. Terminal block; 8. Limit hole; 9. Telescopic assembly; 10. Disassembly valve; 11. First fixed plate; 12. Return spring; 13. Second fixed plate; 14. Limit block; 15. First movable groove; 16. Second movable groove; 17. Fixed block; 18. Fixed column; 19. Retaining column; 20. Retaining block; 21. Pressure spring; 22. Pull rope; 23. Pull rope; 24. Pull ring; 31. Hollow column; 32. Moving rod; 33. Support spring; 91. Anti-rotation column; 92. Telescopic rod; 93. Moving disk; 94. Limiting groove; 95. Telescopic block. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, a detailed description will be given below with reference to the accompanying drawings and specific embodiments. The description in this section is only exemplary and explanatory and should not have any limiting effect on the scope of protection of the present invention.

[0029] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0030] Example 1

[0031] like Figure 1-Figure 5 As shown, an embodiment of the present invention provides a cable and copper busbar assembly for a photovoltaic combiner box, including a busbar 1 and a cable 6, one end of the cable 6 is fixedly connected to a terminal 7, a fixed shaft 5 is fixedly installed on the top surface of the busbar 1, and the terminal 7 is movably sleeved on the outer wall of the fixed shaft 5, a movable column 3 is fixedly installed on the top surface of the busbar 1, an insulating mounting plate 2 is detachably installed on the top surface of the movable column 3, a clamping column 4 is fixedly installed on the bottom surface of the insulating mounting plate 2, a limiting hole 8 is provided on the outer side of the clamping column 4, a disassembly valve 10 is provided on one side of the busbar 1, a first fixing plate 11 is fixedly installed on one side of the disassembly valve 10, the first fixing plate 11 is rotatably installed on the inner wall of the busbar 1, a reset spring 12 is fixedly connected to one side of the first fixing plate 11, a telescopic component 9 is provided on the outside of the reset spring 12, one end of the reset spring 12 is fixedly connected to a second fixing plate 13, a limiting block 14 is fixedly installed on one side of the second fixing plate 13, and the limiting block 14 is movable on the inner wall of the limiting hole 8.

[0032] Among them, the movable column 3 includes a hollow column 31, and a moving rod 32 is slidably installed on the inner wall of the hollow column 31. The bottom of the moving rod 32 is fixedly connected to a support spring 33. The bottom of the support spring 33 is fixedly connected to the bottom surface of the inner cavity of the hollow column 31, and the top of the moving rod 32 is clamped on the bottom surface of the insulating mounting plate 2.

[0033] Specifically, one side of the limiting block 14 is in an arc shape, and the other side is in a flat shape.

[0034] Specifically, when installation is required, it is only necessary to put the terminal blocks 7 on the fixed shaft 5 one by one, then cover the insulating mounting plate 2, move the clamping column 4 down, and squeeze the limit block 14. The limit block 14 moves to the left under the contraction of the return spring 12, and finally makes the limit block 14 enter the limit hole 8 to complete the clamping. The fixed shaft 5 abuts against the insulating mounting plate 2 to complete the limitation of the terminal blocks 7. At this time, the cable is installed, saving installation time; not only that, when disassembling, it is only necessary to rotate the disassembly valve 10. The disassembly valve 10 drives the return spring 12 and the telescopic component 9 to rotate, and then drives the limit block 14 to rotate. The arc surface of the limit block 14 faces downward, and the clamping column 4 can no longer be clamped with the limit block 14. With the force of the support spring 33, the insulating mounting plate 2 is lifted, and the clamping column 4 moves up to complete the disassembly. The disassembly is simple and quick.

[0035] Among them, the telescopic component 9 includes a stop column 91, the inner wall of the stop column 91 is provided with a limiting groove 94, the inner wall of the limiting groove 94 is slidably installed with a telescopic block 95, the inner wall of the stop column 91 is slidably installed with a telescopic rod 92, one end of the telescopic rod 92 is fixedly connected to a movable disk 93, and the outer wall of the movable disk 93 is fixedly connected to the telescopic block 95.

[0036] Specifically, in order to prevent the telescopic rod from rotating with it, a limit groove 94 is provided, and a telescopic block 95 is provided inside the limit groove 94. When the disassembly valve 10 rotates, the anti-rotation column 91 rotates with it. By utilizing the mutual cooperation between the limit groove 94 and the telescopic block 95, the telescopic rod 92 can be rotated, so that the telescopic assembly 9 can achieve the purpose of being able to both retract and rotate together.

[0037] Example 2

[0038] like Figures 1-8 As shown, the difference between Example 2 and Example 1 is that: a first movable groove 15 and a second movable groove 16 are respectively opened inside the fixed shaft 5, the first movable groove 15 and the second movable groove 16 are connected to each other, a fixed block 17 is fixedly installed on the inner wall of the first movable groove 15, a fixed column 18 is fixedly installed on one side of the fixed block 17, a stop column 19 is slidably installed on the inner wall of the fixed column 18, and a stop block 20 is provided at one end of the stop column 19.

[0039] A pressure spring 21 is fixedly installed on one side of the inner cavity of the fixing column 18 , and the other end of the supporting column 19 is fixedly connected to one end of the pressure spring 21 .

[0040] Among them, the other end of the support column 19 is fixedly connected to a pull rope 22, the pull rope 22 is located inside the pressure spring 21, and extends to the outside of the fixed column 18. There are several pull ropes 22, and one end of several pull ropes 22 is fixedly connected to a traction rope 23. The traction rope 23 passes through the second movable groove 16 to the bottom of the fixed shaft 5, and one end of the traction rope 23 is fixedly connected to a pull ring 24.

[0041] Specifically, the traction rope 23 also passes through the bus copper bus. In order to avoid the cable from becoming obviously loose in the horizontal direction when in use, or the inner diameters of the cable terminals are different, the outer diameter of the fixed shaft is too large or too small, and other problems, the fixed shaft needs to be improved so that it can also limit the terminal 7 in the horizontal direction; when installation is required, only the pull ring 24 needs to be pulled, and the traction rope 23 moves with multiple pull ropes 22, and the support column 19 and the support block 20 shrink. After the terminal 7 is put on, the pull ring 24 is released, and under the action of the pressure spring 21, the support column 19 and the support block 20 begin to rebound, and the support block 20 rests on the inner wall of the terminal 7 to complete the horizontal limit; similarly, when disassembly is required, the pull ring 24 is also pulled to improve the fixing effect of the cable.

[0042] The block 20 is in the shape of a hemisphere or a quadrangular prism.

[0043] Specifically, when it is set as a hemisphere, it can be directly put on without pulling the pull ring 24; and when it is set as a quadrangular prism, in order to avoid scratching the terminal 7, it is necessary to pull the pull ring 24 before it can be put on.

[0044] The working process of the present invention is as follows:

[0045] When installation is required, the present invention only requires to put the terminal blocks 7 on the fixed shaft 5 one by one, then cover the insulating mounting plate 2, move the clamping column 4 downward, and squeeze the limit block 14. The limit block 14 moves to the left under the contraction of the return spring 12, and finally makes the limit block 14 enter the limit hole 8 to complete the clamping. The fixed shaft 5 abuts against the insulating mounting plate 2 to complete the limitation of the terminal blocks 7. At this time, the cable is installed, saving installation time. Not only that, when disassembling, it is only necessary to rotate the disassembly valve 10. The disassembly valve 10 drives the return spring 12 and the telescopic component 9 to rotate, and then drives the limit block 14 to rotate. The arc surface of the limit block 14 faces downward, and the clamping column 4 can no longer be clamped with the limit block 14. With the force of the support spring 33, the insulating mounting plate 2 is lifted up, the clamping column 4 moves up, and the disassembly is completed. The disassembly is simple and quick.

[0046] In this solution, when installation is required, only the pull ring 24 needs to be pulled, and the traction rope 23 moves with multiple pull ropes 22, causing the support column 19 and the support block 20 to shrink. After the terminal 7 is put on, the pull ring 24 is released, and under the action of the pressure spring 21, the support column 19 and the support block 20 begin to rebound, and the support block 20 rests on the inner wall of the terminal 7 to complete the horizontal limit. Similarly, when disassembly is required, the pull ring 24 is also pulled to improve the fixing effect of the cable.

[0047] This device effectively solves the problem that the current installation process of cables and copper busbars needs to be installed or disassembled one by one. Through the snap-on method, all cable disassembly or installation work can be completed at one time, which is not only simple to operate but also saves time and effort. In addition, in order to avoid the inapplicability of the fixed axis and supplement the horizontal direction limitation work, the terminal block can be used to abut the terminal, and then the pull ring can be used for disassembly. It has a simple structure, and is easy and quick to install and disassemble, and is worthy of promotion.

Claims

1. A cable and copper busbar assembly for a photovoltaic combiner box, comprising a busbar (1) and a cable (6), one end of the cable (6) being fixedly connected to a terminal (7), characterized in that: The top surface of the busbar (1) is fixedly mounted with a fixed shaft (5), the wiring terminal (7) is movably sleeved on the outer wall of the fixed shaft (5), the top surface of the busbar (1) is fixedly mounted with a movable column (3), the top surface of the movable column (3) is detachably mounted with an insulating mounting plate (2), the bottom surface of the insulating mounting plate (2) is fixedly mounted with a clamping column (4), the outer side of the clamping column (4) is provided with a limiting hole (8), a disassembly valve (10) is provided on one side of the busbar (1), a first fixed plate (11) is fixedly mounted on one side of the disassembly valve (10), the first fixed plate (11) is rotatably mounted on the inner wall of the busbar (1), a reset spring (12) is fixedly connected to one side of the first fixed plate (11), the reset spring (12) A telescopic assembly (9) is provided on the outside, one end of the return spring (12) is fixedly connected to the second fixed plate (13), and a limiting block (14) is fixedly installed on one side of the second fixed plate (13), and the limiting block (14) moves on the inner wall of the limiting hole (8), and one side of the limiting block (14) is in an arc shape and the other side is in a flat shape; the telescopic assembly (9) includes a stop column (91), the inner wall of the stop column (91) is provided with a limiting groove (94), and the inner wall of the limiting groove (94) is slidably installed with a telescopic block (95), and the inner wall of the stop column (91) is slidably installed with a telescopic rod (92), one end of the telescopic rod (92) is fixedly connected to a movable disk (93), and the outer wall of the movable disk (93) is fixedly connected to the telescopic block (95).

2. A cable and copper busbar assembly for a photovoltaic combiner box according to claim 1, characterized in that: The movable column (3) comprises a hollow column (31), a moving rod (32) is slidably mounted on the inner wall of the hollow column (31), a supporting spring (33) is fixedly connected to the bottom of the moving rod (32), the bottom of the supporting spring (33) is fixedly connected to the bottom surface of the inner cavity of the hollow column (31), and the top of the moving rod (32) is clamped to the bottom surface of the insulating mounting plate (2).

3. A cable and copper busbar assembly for a photovoltaic combiner box according to claim 2, characterized in that: A first movable groove (15) and a second movable groove (16) are respectively provided inside the fixed shaft (5), and the first movable groove (15) and the second movable groove (16) are communicated with each other. A fixed block (17) is fixedly installed on the inner wall of the first movable groove (15), a fixed column (18) is fixedly installed on one side of the fixed block (17), and a support column (19) is slidably installed on the inner wall of the fixed column (18), and a support block (20) is provided at one end of the support column (19).

4. A cable and copper busbar assembly for a photovoltaic combiner box according to claim 3, characterized in that: A pressure spring (21) is fixedly mounted on one side of the inner cavity of the fixed column (18), and the other end of the support column (19) is fixedly connected to one end of the pressure spring (21).

5. A cable and copper busbar assembly for a photovoltaic combiner box according to claim 4, characterized in that: The other end of the support column (19) is fixedly connected to a pull rope (22), and the pull rope (22) is located inside the pressure spring (21) and extends to the outside of the fixed column (18). There are a plurality of pull ropes (22), and one end of each of the plurality of pull ropes (22) is fixedly connected to a traction rope (23).

6. A cable and copper busbar assembly for a photovoltaic combiner box according to claim 5, characterized in that: The traction rope (23) passes through the second movable groove (16) to the bottom of the fixed shaft (5), and one end of the traction rope (23) is fixedly connected to a pull ring (24).

7. A cable and copper busbar assembly for a photovoltaic combiner box according to claim 6, characterized in that: The stop block (20) is in the shape of a hemisphere or a quadrangular prism.

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