A photovoltaic module junction box testing device

Abstract

The present invention relates to the technical field of junction boxes, and particularly to a testing device for photovoltaic module junction boxes. After the cable part is subjected to a pulling test by the first clamping block and the second clamping block, the first clamping block and the second clamping block can fix the detached cable part on the junction box body and transfer it together to the welding station for welding operation. Compared with the prior art, there is no need to sort the junction box body and the detached cable part, nor is it necessary to manually or by a robotic arm reinsert the detached cable part into the junction box body, simplifying the process steps; A testing device for photovoltaic module junction boxes includes a second box body, a first movable block, a first clamping block, a second movable block, a screw rod, a first connecting block, a second connecting block, a second clamping block, a convex block and a driving assembly; The second box body is pluggably connected to the inside of the first box body; A number of first movable blocks are slidably connected to the second box body in a damping manner; A first clamping block is fixedly connected to each first movable block; A number of second movable blocks are slidably connected to the second box body.

Description

Technical Field

[0001] The present invention relates to the technical field of junction boxes. More specifically, the present invention relates to a photovoltaic module junction box testing device. Background Art

[0002] When testing a photovoltaic junction box in the prior art, the photovoltaic junction box is first fixed, and then the cables of the photovoltaic junction box are fixed on a tensioner. The cables are pulled by the tensioner until the end of the cable falls off from the solder joint position, so as to measure the ultimate tensile capacity of the cable. However, when reworking the photovoltaic junction box after the above-mentioned detection operation, it is necessary to sort the junction box and the fallen cables, and then transport them to the welding workshop separately. Then, the fallen cables are reinserted into the junction box before the end of the cable can be soldered. The operation process is cumbersome and the efficiency is low.

[0003] In summary, the present application proposes a photovoltaic module junction box testing device to improve the above-mentioned technical problems. Summary of the Invention

[0004] In order to overcome the disadvantage of low efficiency in reworking the tested photovoltaic junction box in the prior art, the present invention provides a photovoltaic module junction box testing device.

[0005] Technical Solution:

[0006] A photovoltaic module junction box testing device includes a chassis and a first box body; the first box body is fixedly connected to the chassis; it further includes a second box body, a first movable block, a first clamping block, a second movable block, a screw rod, a first connecting block, a second connecting block, a second clamping block, a convex block and a driving component; the second box body is inserted and connected to the inside of the first box body; a plurality of first movable blocks are slidably connected to the second box body in a damping manner; a first clamping block is fixedly connected to each first movable block; a plurality of second movable blocks are slidably connected to the second box body; a screw rod is rotatably connected to each second movable block, and the screw rod is screwed to the second box body; a first connecting block is fixedly connected to each second movable block; a second connecting block is slidably connected to each first connecting block in a damping manner; a second clamping block is fixedly connected to each second connecting block, and the cable part is clamped and fixed by the cooperation of the first clamping block and the second clamping block; a convex block is fixedly connected to each first movable block; a groove is formed in each second connecting block, and the convex block is located inside the corresponding groove; a driving component is connected to the chassis, and the driving component is used to drive the first movable block to move horizontally.

[0007] As an improvement to the above solution, in the above photovoltaic module junction box testing device, the driving assembly includes a telescopic cylinder, a tensile sensor, a connecting block three, a round rod, and a connecting block four; several telescopic cylinders are fixedly connected to the chassis; a tensile sensor is fixedly connected to the telescopic end of each telescopic cylinder; a connecting block three is fixedly connected to the movable part of each tensile sensor; a round rod is fixedly connected to each connecting block three; a connecting block four is fixedly connected to each movable block one, and the connecting block four is inserted into the corresponding round rod.

[0008] As an improvement to the above solution, in the above photovoltaic module junction box testing device, a chamfer is provided at the edge of the round rod.

[0009] As an improvement to the above solution, in the above photovoltaic module junction box testing device, a limiting assembly is further included, and the limiting assembly includes a limiting block one, a connecting block five, and a limiting block two; several limiting blocks one are fixedly connected to the box body two, and the limiting block one is slidably connected to the corresponding clamping block one; a connecting block five is fixedly connected to each movable block two; a limiting block two is fixedly connected to each connecting block five, and the limiting block two is slidably connected to the corresponding clamping block two.

[0010] As an improvement to the above solution, in the above photovoltaic module junction box testing device, a pin is further included; several pins are slidably connected to the box body two, and the pins are inserted into the corresponding movable blocks one.

[0011] As an improvement to the above solution, in the above photovoltaic module junction box testing device, the inner diameter of the limiting block one is larger than the inner diameter of the clamping block one; the inner diameter of the limiting block two is larger than the inner diameter of the clamping block two.

[0012] As an improvement to the above solution, in the above photovoltaic module junction box testing device, the inner side surfaces of the limiting block one and the limiting block two are both set as smooth surfaces.

[0013] As an improvement to the above solution, in the above photovoltaic module junction box testing device, heat dissipation holes are provided on the chassis.

[0014] As an improvement to the above solution, in the above photovoltaic module junction box testing device, a knob is provided at the top of the screw rod, and anti-slip patterns are provided on the outer side of the knob.

[0015] As an improvement to the above solution, in the above photovoltaic module junction box testing device, a chamfer is provided at the edge of the convex block.

[0016] Beneficial effects:

[0017] 1. After the cable part is subjected to a drawing test by the first clamping block and the second clamping block, the first clamping block and the second clamping block can fix the detached cable part on the junction box body and transfer it to the welding station for welding operation. Compared with the prior art, there is no need to sort the junction box body and the detached cable part, nor is it necessary to manually or use a robotic arm to re-insert the detached cable part into the junction box body, which simplifies the process steps and is conducive to improving efficiency. Using the parts on the second box body as fixtures, after multiple sets are set up, the detection and welding can be carried out in a production line operation, further improving the efficiency. At the same time, during the process of drawing and inserting the cable part, the cable part is always wrapped inside the first clamping block, the second clamping block, the first limiting block and the second limiting block, avoiding the bending of the cable part, and thus avoiding the problem of incomplete reset of the cable part;

[0018] 2. When the first clamping block and the second clamping block just come into contact with the cable part, a gap will be formed between the cable part and the first limiting block and the second limiting block. After the first clamping block and the second clamping block clamp the cable part, the cable part is slightly bulged under extrusion and bulges into the gap, and will not be tightly pressed against the inner walls of the first limiting block and the second limiting block, avoiding interference with the insertion operation of the cable part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Shows a schematic structural view of the first perspective of the photovoltaic module junction box testing device of the present invention;

[0020] Figure 2 Shows a schematic structural view of the first box body and the second box body of the present invention;

[0021] Figure 3 Shows a schematic structural view of the second perspective of the photovoltaic module junction box testing device of the present invention;

[0022] Figure 4 Shows a schematic structural view of the driving assembly of the present invention;

[0023] Figure 5 Shows an exploded view of the photovoltaic module junction box testing device of the present invention;

[0024] Figure 6 Shows an exploded view of the first clamping block, the second clamping block, the first limiting block and the second limiting block of the present invention;

[0025] Figure 7 Shows a schematic structural view of the first clamping block, the second clamping block, the first limiting block and the second limiting block of the present invention.

[0026] Names of the reference numerals in the figure: 1 - chassis, 2 - first box body, 3 - second box body, 4 - first movable block, 5 - first clamping block, 6 - second movable block, 7 - screw rod, 8 - first connecting block, 9 - second connecting block, 10 - second clamping block, 11 - convex block, 12 - junction box, 201 - telescopic air cylinder, 202 - tension sensor, 203 - third connecting block, 204 - round rod, 205 - fourth connecting block, 206 - first limiting block, 207 - fifth connecting block, 208 - second limiting block, 209 - bolt, 91 - groove, 92 - cable part. Specific implementation manner

[0027] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0028] Embodiment 1

[0029] A photovoltaic module junction box testing device, as Figures 1-6 shown, includes a chassis 1 and a first box body 2; the first box body 2 is bolted to the chassis 1, and the first box body 2 is made of plastic material; it further includes a second box body 3, a first movable block 4, a first clamping block 5, a second movable block 6, a screw rod 7, a first connecting block 8, a second connecting block 9, a second clamping block 10, a convex block 11 and a driving component; the second box body 3 is inserted and connected to the inside of the first box body 2, and the body of the junction box 12 is inserted into the inside of the second box body 3; two first movable blocks 4 are slidably connected to the second box body 3 in a damping manner; a first clamping block 5 is welded to each first movable block 4; two second movable blocks 6 are slidably connected to the second box body 3; a screw rod 7 is rotatably connected to each second movable block 6, and the screw rod 7 is screwed to the second box body 3; a first connecting block 8 is welded to each second movable block 6; a second connecting block 9 is slidably connected to each first connecting block 8 in a damping manner; a second clamping block 10 is welded to each second connecting block 9; a convex block 11 is welded to each first movable block 4; a groove 91 is formed in each second connecting block 9, and the convex block 11 is located inside the corresponding groove 91; a driving component is connected to the chassis 1.

[0030] The driving component includes a telescopic cylinder 201, a tensile sensor 202, a third connecting block 203, a round rod 204 and a fourth connecting block 205; two telescopic cylinders 201 are bolted to the chassis 1; a tensile sensor 202 is fixedly connected to the telescopic end of each telescopic cylinder 201; a third connecting block 203 is fixedly connected to the movable part of each tensile sensor 202; a round rod 204 is welded to each third connecting block 203; a fourth connecting block 205 is welded to each first movable block 4, and the fourth connecting block 205 is inserted into the corresponding round rod 204. The telescopic cylinder 201 drives the tensile sensor 202 to move, the tensile sensor 202 drives the third connecting block 203 to move, the third connecting block 203 drives the round rod 204 to move, and the round rod 204 drives the fourth connecting block 205 to move, so that the fourth connecting block 205 drives the first movable block 4 to move horizontally.

[0031] A chamfer is provided at the edge of the round rod 204, making it easier for the round rod 204 to be inserted into the fourth connecting block 205.

[0032] It further includes a limiting component, which includes a first limiting block 206, a fifth connecting block 207 and a second limiting block 208; two first limiting blocks 206 are welded to the second box body 3, and the first limiting block 206 is slidably connected to the corresponding first clamping block 5; a fifth connecting block 207 is bolted to each second movable block 6; a second limiting block 208 is welded to each fifth connecting block 207, and the second limiting block 208 is slidably connected to the corresponding second clamping block 10. Through the cooperation of the fifth connecting block 207 and the second limiting block 208, the cable part 92 is guided and limited.

[0033] It further includes a pin 209; two pins 209 are slidably connected to the second box body 3, and the pins 209 are inserted into the corresponding first movable blocks 4 to fix the first movable blocks 4.

[0034] Clamping operation: Manually turn the screw 7 to drive the second movable block 6 to slide upward in the second box body 3. The second movable block 6 drives the parts thereon to move upward, so that the second clamping block 10 moves upward away from the first clamping block 5. Then manually insert the main body of the junction box 12 into the second box body 3 and place the cable part 92 inside the first clamping block 5. Then manually turn the screw 7, and the screw 7 drives the second movable block 6 to slide downward in the second box body 3. The second movable block 6 drives the parts thereon to move downward, so that the second clamping block 10 is re-fastened on the upper side of the first clamping block 5. At this time, through the cooperation of the first clamping block 5 and the second clamping block 10, the cable part 92 is clamped.

[0035] Detection operation: Manually pull the bolt 209 away from the first movable block 4, start the telescopic cylinder 201, the telescopic cylinder 201 drives the tension sensor 202 to move forward, the tension sensor 202 drives the third connecting block 203 to move forward, the third connecting block 203 drives the round rod 204 to move forward, the round rod 204 drives the fourth connecting block 205 to move forward, the fourth connecting block 205 drives the first movable block 4 to slide forward on the second box body 3, the first movable block 4 drives the first clamping block 5 to move forward. At the same time, the first movable block 4 drives the convex block 11 to move forward, the convex block 11 drives the second connecting block 9 to slide forward on the first connecting block 8, and the second connecting block 9 drives the second clamping block 10 to move forward, so that the first clamping block 5 and the second clamping block 10 simultaneously pull the cable part 92 forward. During this process, the tension sensor 202 monitors the tension value in real time. When it is detected that the tension value suddenly decreases, it can indicate that the end of the cable part 92 has fallen off from the soldering point position of the junction box 12 body. At this time, immediately control the telescopic cylinder 201 to stop moving, and calculate the tensile capacity of the cable part 92 based on the maximum tension value measured by the tension sensor 202.

[0036] Reset operation: After the test is completed, the telescopic cylinder 201 controls the first clamping block 5 and the second clamping block 10 to move backward to their original positions, so that the first clamping block 5 and the second clamping block 10 insert the cable part 92 back to its original position. Then, manually insert the bolt 209 back into the first movable block 4 to fix it, thereby fixing the first clamping block 5 on the first movable block 4. At the same time, the first movable block 4 fixes the second connecting block 9 through the convex block 11, thereby fixing the second clamping block 10 on the second connecting block 9. Then, take out the second box body 3 from the first box body 2 upward, so that the fourth connecting block 205 moves upward away from the round rod 204. At this time, the second box body 3 and its parts are used as a jig and fixed on the junction box 12 body and the cable part 92. Then, transfer the jig, the junction box 12 body and the cable part 92 to the welding station together, and re-solder the cable part 92 on the junction box 12 body to complete the rework operation. Compared with the prior art, there is no need to sort the junction box 12 body and the fallen-off cable part 92, nor is it necessary to manually or by a robotic arm re-insert the fallen-off cable part 92 into the junction box 12 body, which simplifies the process steps and is beneficial to improving efficiency. Using the second box body 3 and its parts as a jig and setting multiple sets for use can enable the detection and welding to achieve assembly line operation, further improving efficiency.

[0037] During the process of reinserting the cable part 92 into the main body of the junction box 12, if the friction between the cable part 92 and the main body of the junction box 12 is too large, the end of the cable part 92 will bend when subjected to the insertion force, resulting in the cable part 92 not being inserted in place. Therefore, during the clamping process, the screw 7 drives the second movable block 6 and the parts thereon to move upward, so that the second clamping block 10 moves upward away from the first clamping block 5, and the second limiting block 208 moves upward away from the first limiting block 206. Then, the operator inserts the main body of the junction box 12 into the second box body 3 manually, places the cable part 92 inside the first clamping block 5 and the first limiting block 206, and then the screw 7 drives the second movable block 6 and the parts thereon to move downward, so that the first clamping block 5 and the second clamping block 10 clamp the cable part 92, and the first limiting block 206 and the second limiting block 208 are located outside the cable part 92. During the test process, the first clamping block 5 and the second clamping block 10 drive the cable part 92 to move forward, while the first limiting block 206 and the second limiting block 208 remain stationary, enabling the first clamping block 5 and the second clamping block 10 to slide forward on the first limiting block 206 and the second limiting block 208 respectively, so that the cable part 92 is always wrapped inside the first clamping block 5, the second clamping block 10, the first limiting block 206 and the second limiting block 208. During the reset process, the first clamping block 5 and the second clamping block 10 drive the cable part 92 to move backward. At this time, through the cooperation of the first limiting block 206 and the second limiting block 208, the cable part 92 is limited and guided to avoid the bending phenomenon of the cable part 92, thus avoiding the problem of incomplete reset of the cable part 92.

[0038] In summary: After the cable part 92 is subjected to the pull-out test by the first clamping block 5 and the second clamping block 10, the first clamping block 5 and the second clamping block 10 can fix the detached cable part 92 on the main body of the junction box 12 and transfer it to the welding station for welding operation together. Compared with the prior art, there is no need to sort the main body of the junction box 12 and the detached cable part 92, nor is it necessary to reinsert the detached cable part 92 into the main body of the junction box 12 manually or by a robotic arm, which simplifies the process steps and is beneficial to improving efficiency. Taking the second box body 3 and the parts thereon as fixtures, after multiple sets are set up, the detection and welding can be carried out in a production line manner, further improving efficiency. At the same time, during the process of pulling and inserting the cable part 92, the cable part 92 is always wrapped inside the first clamping block 5, the second clamping block 10, the first limiting block 206 and the second limiting block 208, avoiding the bending phenomenon of the cable part 92, thus avoiding the problem of incomplete reset of the cable part 92.

[0039] Embodiment 2

[0040] On the basis of Embodiment 1, as Figure 7 shown, the inner diameter of the first limiting block 206 is larger than the inner diameter of the first clamping block 5; the inner diameter of the second limiting block 208 is larger than the inner diameter of the second clamping block 10.

[0041] The inner side surfaces of the first limiting block 206 and the second limiting block 208 are both set as smooth surfaces to reduce friction.

[0042] The chassis 1 is provided with heat dissipation holes for dissipating heat from the electrical components inside it.

[0043] A knob is provided at the top of the screw rod 7, and anti-slip patterns are provided on the outer side of the knob, making it easier for manual operation to turn the screw rod 7.

[0044] A chamfer is provided at the edge of the bump 11, making it easier for the bump 11 to be inserted into the groove 91.

[0045] After the clamping block one 5 and the clamping block two 10 clamp the cable part 92, a slight bulge will appear at the position outside the clamping of the outer skin of the cable part 92, resulting in the position outside the clamping of the cable part 92 being in close contact with the limiting block one 206 and the limiting block two 208. As a result, when the cable part 92 is inserted back into the main body of the junction box 12 later, the cable part 92 will be subjected to a large frictional force, interfering with the insertion operation. Therefore, the inner diameter of the limiting block one 206 is set to be larger than the inner diameter of the clamping block one 5, and the inner diameter of the limiting block two 208 is set to be larger than the inner diameter of the clamping block two 10. During the clamping process, when the clamping block one 5 and the clamping block two 10 just come into contact with the cable part 92, a gap will be formed between the cable part 92 and the limiting block one 206 and the limiting block two 208. After the clamping block one 5 and the clamping block two 10 clamp the cable part 92, the cable part 92 is extruded and slightly bulges, and the bulge extends into the gap, without pressing tightly against the inner walls of the limiting block one 206 and the limiting block two 208, avoiding interference with the insertion operation of the cable part 92.

[0046] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the purpose of the present invention.

Claims

1. A photovoltaic module junction box testing device, comprising a chassis (1); a box body (2) is fixedly connected to the chassis (1); wherein: The box body 1 (2) is pluggably connected to the box body 2 (3) on the inner side; a plurality of movable blocks 1 (4) are connected to the box body 2 (3) in a damping sliding manner; each movable block 1 (4) is fixedly connected to a clamping block 1 (5); a plurality of movable blocks 2 (6) are connected to the box body 2 (3) in a sliding manner; each movable block 2 (6) is rotatably connected to a screw rod (7), and the screw rod (7) is screwed to the box body 2 (3); each movable block 2 (6) is fixedly connected to a connecting block 1 (8); each connecting block 1 (8) is connected to a damping sliding manner. A connecting block 2 (9) is connected; each connecting block 2 (9) is fixedly connected to a clamping block 2 (10), and the cable portion (92) is clamped and fixed by the clamping block 1 (5) and the clamping block 2 (10) cooperating with each other; each movable block 1 (4) is fixedly connected to a protrusion (11); each connecting block 2 (9) is provided with a groove (91), and the protrusion (11) is located inside the corresponding groove (91); a driving assembly is connected to the chassis (1), and the driving assembly is used to drive the movable block 1 (4) to move horizontally; The driving assembly comprises a telescopic cylinder (201), a tension sensor (202), a connecting block three (203), a round rod (204) and a connecting block four (205); a plurality of telescopic cylinders (201) are fixedly connected to the chassis (1); a tension sensor (202) is fixedly connected to the telescopic end of each telescopic cylinder (201); a movable part of each tension sensor (202) is fixedly connected to a connecting block three (203); a round rod (204) is fixedly connected to each connecting block three (203); a connecting block four (205) is fixedly connected to each movable block one (4), and the connecting block four (205) is plugged into the corresponding round rod (204).

2. A photovoltaic module junction box testing device according to claim 1, characterized in that: The edge of the round rod (204) is provided with a chamfer.

3. A photovoltaic module junction box testing device according to claim 1, characterized in that: The invention also comprises a limit assembly, which comprises a limit block 1 (206), a connecting block 5 (207) and a limit block 2 (208); a plurality of limit blocks 1 (206) are fixedly connected to the box body 2 (3), and the limit blocks 1 (206) are slidably connected to the corresponding clamping blocks 1 (5); each movable block 2 (6) is fixedly connected to a connecting block 5 (207); each connecting block 5 (207) is fixedly connected to a limit block 2 (208), and the limit blocks 2 (208) are slidably connected to the corresponding clamping blocks 2 (10).

4. A photovoltaic module junction box testing device according to claim 3, characterized in that: It also includes a latch (209); a plurality of latches (209) are slidably connected to the box body 2 (3), and the latches (209) are plugged into the corresponding movable block 1 (4).

5. A photovoltaic module junction box testing device according to claim 4, characterized in that the limit block The inner diameter of the first (206) is larger than the inner diameter of the first clamping block (5); the inner diameter of the second limit block (208) is larger than the inner diameter of the second clamping block (10).

6. A photovoltaic module junction box testing device according to claim 5, characterized in that: The inner side surfaces of the first limiting block (206) and the second limiting block (208) are both configured as smooth surfaces.

7. A photovoltaic module junction box testing device according to any one of claims 1 to 6, characterized in that: The chassis (1) is provided with heat dissipation holes.

8. A photovoltaic module junction box testing device according to claim 7, characterized in that: A knob is provided at the top of the screw rod (7), and anti-slip grooves are provided on the outer side of the knob.

9. A photovoltaic module junction box testing device according to claim 8, characterized in that: The edge of the projection (11) is provided with a chamfer.

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