Surface weight fixing device for testing photovoltaic junction box
The weight fixation device for photovoltaic junction boxes addresses inefficiencies and detachment issues by providing a stable, adjustable, and quick-release mechanism for secure weight attachment, suitable for various junction box sizes and orientations.
Patent Information
- Application Number
- CN202421391613.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-18
- Publication Date
- 2025-07-15
- Estimated Expiration
- 2034-06-18
AI Technical Summary
The existing photovoltaic junction box fixing devices are prone to fall off during thermal cycle tests, which poses a risk of smashing components and test chambers, and are inconvenient to operate, making it difficult to adapt to junction boxes of different manufacturers and models.
An outer clamp weight fixing device including a substrate, a fixed slider, a sliding screw, a locking pressing plate and a quick-removing handle is designed. Through the adjustment of the sliding groove and a fixed slide, it is adapted to junction boxes of different sizes and models, and is stable and fixed by the combination of the locking pressing plate and a quick-removing pressing plate.
It realizes that the weights are steadily suspended without damaging the junction box, adapting to the junction box of different manufacturers and models, improving the fixing strength and operating efficiency, and reducing the risk of shedding.
Smart Images
Figure CN223107399U_ABST
Abstract
Description
Technical Field
[0001] This document belongs to the technical field of photovoltaic junction box testing, and specifically relates to a surface weight fixing device for photovoltaic junction box testing. Background Technique
[0002] Currently, in the international standard "Photovoltaic (PV) modules - Design qualification and type approval", IEC61215-2:2021, in the requirements of the thermal cycle test (MQT11), item 4, paragraph 11, thermal cycle test, in sub-item f standard, it is required that "a 5N weight can be connected to the electrical terminal leads of the module".
[0003] It is easy for the weight to fall off when directly connected to the junction box and not easy to fix. Therefore, it is necessary to specifically fix the weight on the surface of the photovoltaic junction box. Currently, most existing photovoltaic junction box fixing weights use steel wires or strings to tie the weights, and the weights are prone to falling off during the test, posing a risk of damaging the module and the test chamber.
[0004] Existing junction box fixing devices have some disadvantages, such as:
[0005] 1. Using internal hexagon screws for fixing is not easy to operate in the test chamber, with a slow speed and affecting efficiency.
[0006] 2. In the reference junction box fixing device, the photovoltaic module is placed horizontally, the junction box is horizontally upward, and the force direction of the fixing device is horizontally inclined. While in the test chamber, the photovoltaic module is placed vertically, the junction box is vertically to the left or right, and the force direction of the fixing device is vertical, making the fixing device prone to falling off. Content of the Utility Model
[0007] To solve the above problems, this paper proposes a surface weight fixing device for photovoltaic junction box testing. The weight fixing device is arranged on the outside of the junction box. The weight fixing device includes a substrate, a fixed slider, a sliding screw, a locking pressing piece, and a quick-release pressing handle. The substrate is in the shape of a rectangular plate. A fixing ring is vertically and perpendicularly arranged at the center of the front surface of the substrate. Through slots are provided on the left and right ends and the upper middle part of the surface of the substrate. A sliding screw is provided through the inside of the through slot. The rear end of the sliding screw is fixedly connected to the fixed slider, and the front end of the sliding screw is threadedly connected with a quick-release pressing handle. The quick-release pressing handle is arranged on the front surface of the substrate, and a locking pressing piece is arranged between the quick-release pressing handle and the substrate. The fixed slider is arranged on the rear surface of the substrate, and the junction box is externally wrapped and fixed between the fixed sliders at the left and right ends and the upper side. By using an externally clamped weight fixing device, the fixing of the weight fixing device on the outside of the junction box can be completed without damaging the junction box. Moreover, the weight fixing device can conveniently adapt to junction boxes of different sizes from different manufacturers, models, and sizes through the through slots. By adjusting the position of the fixed pressing block through the through slots, the junction box can be locked to ensure the stability of the fixed weight device. The junction box of the component can be conveniently suspended with weights at any angle.
[0008] The substrate is in the shape of a horizontal rectangular plate. A fixing ring is integrally and fixedly arranged in the middle of the front surface of the substrate. The rear surface of the substrate is mutually attached and connected to the front surface of the junction box. The fixing ring is in the shape of a longitudinally arranged hoisting ear ring, and a lifting rope is fixedly tied inside the fixing ring. A weight is vertically and perpendicularly arranged at the bottom of the lifting rope. The substrate with through slots can conveniently enable the fixed slider to be set on the rear surface of the substrate based on a reference, and the fixing ring fixedly arranged on the front surface of the substrate can also conveniently suspend the weight at various angles.
[0009] The through slot is in the shape of a strip slot. Two groups of through slots at the left and right ends are symmetrically arranged left and right based on the vertical center line of the substrate, and two through slots are horizontally parallel up and down at the left and right ends. The through slot on the upper middle part is vertically symmetric left and right based on the vertical center line of the substrate, and two through slots are vertically parallel left and right on the upper middle part. By adjusting the position of the fixed pressing block through the through slots, the junction box can be locked, which is convenient for adjusting and adapting to junction boxes of different manufacturers, models, and sizes.
[0010] The shape of the fixed slider is a rectangular block. The front surface of the fixed slider is fixedly connected to the sliding screw. The opposite inner surfaces of the fixed slider are fitted and connected to the junction box. The fixed sliders on the back of the sliding grooves at both left and right ends are vertically and parallelly arranged at both ends behind the substrate. The fixed slider on the back of the sliding groove at the upper side in the middle is horizontally arranged at the upper side behind the substrate. By using the fixed sliders on three sides to fix the junction box, the stability of the fixed weight device is ensured, and the component junction box can hang weights at any angle.
[0011] The sliding screw is a cylindrical rod with threads on the outside. The diameter of the sliding screw is smaller than the width of the sliding groove. A locking pressing piece is pluggably arranged on the outside of the front end of the sliding screw. By means of the sliding screw, not only can the fixed slider slide based on the sliding groove, but also the rotation and tightening of the quick-release pressing handle can be facilitated, thereby improving the overall fixing strength of the fixed slider.
[0012] The locking pressing piece is a rigid rectangular hard board. Through holes are symmetrically and flushly arranged on the surface of the locking pressing piece. The diameter of the through holes is larger than the outer diameter of the sliding screw. The center distance of the through holes is the same as the distance between the opposite sliding grooves. The quick-release pressing handle is a threaded rotation and telescopic handle. A rotating screw head is arranged at the end of the quick-release pressing handle. The shape of the rotating screw head is oval. The rotating screw head is threadedly connected to the sliding screw. A handle is vertically arranged on the outside of the short side of the rotating screw head. Through the cooperation of the locking pressing piece and the quick-release pressing handle, after the quick-release pressing handle is pressed down, the adjacent two quick-release pressing handles can be tensioned and fixed based on the substrate together, thereby realizing the tensioning and fixing of the fixed slider, and ensuring the pressing and fixing of the fixed slider to the junction box.
[0013] The junction box is horizontally fixedly connected and arranged at the joint of the photovoltaic panels.
[0014] Beneficial effects:
[0015] By using an external clamping type weight fixing device, the fixing of the weight fixing device on the outside of the junction box can be completed without damaging the junction box. And the weight fixing device can conveniently adapt to junction boxes of various different sizes from different manufacturers, different models through the sliding grooves, and adjust the position of the fixed pressing block through the sliding grooves to lock the junction box, ensuring the stability of the fixed weight device. The component junction box can conveniently hang weights at any angle.
[0016] The substrate with sliding grooves can conveniently enable the fixed slider to be arranged on the back of the substrate based on a reference, and the fixed ring fixedly arranged on the front surface of the substrate can also conveniently hang weights at various angles.
[0017] Adjust the position of the fixed pressing block through the sliding groove to lock the junction box, which is convenient for adjusting and adapting to junction boxes of different manufacturers, models, and sizes.
[0018] Fix the junction box by using the fixed sliders on three sides to ensure the stability of the fixed weight device, and the component junction box can hang weights at any angle.
[0019] By sliding the screw rod, not only can the fixed slider slide based on the sliding groove, but also it is convenient for the quick-release pressing handle to rotate and tighten, thereby improving the overall fixing strength of the fixed slider.
[0020] Through the cooperation of the locking pressing piece and the quick-release pressing handle, after the quick-release pressing handle is pressed down, the adjacent two quick-release pressing handles can be tensioned and fixed based on the substrate together, thereby realizing the tensioning and fixing of the fixed slider, and ensuring the pressing and fixing of the fixed slider on the junction box. Description of the Drawings
[0021] Figure 1 is an assembly schematic diagram of a surface weight fixing device for photovoltaic junction box testing;
[0022] Figure 2 is an inner side assembly schematic diagram of a surface weight fixing device for photovoltaic junction box testing;
[0023] Figure 3 is a front schematic diagram of a surface weight fixing device for photovoltaic junction box testing;
[0024] Figure 4 is a back schematic diagram of a surface weight fixing device for photovoltaic junction box testing;
[0025] In the figure: 1. Substrate, 2. Fixed slider, 3. Sliding screw rod, 4. Locking pressing piece, 5. Quick-release pressing handle, 6. Sliding groove, 7. Fixed ring, 8. Suspension rope, 9. Weight, 10. Photovoltaic power generation panel, 11. Junction box. Detailed Implementation Modes
[0026] To deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction with embodiments and drawings. The embodiments are only used to explain the present invention and do not limit the protection scope of the present invention.
[0027] Substrate 1, fixed slider 2, sliding screw rod 3, locking pressing piece 4, quick-release pressing handle 5, sliding groove 6, fixed ring 7, suspension rope 8, weight 9, photovoltaic power generation panel 10, junction box 11.
[0028] As Figure 1 、 2 、shown in 3, 4;
[0029] A surface weight 9 fixing device for testing a photovoltaic junction box 11. The weight 9 fixing device is arranged outside the junction box 11. The weight 9 fixing device includes a substrate 1, a fixed slider 2, a sliding screw 3, a locking pressing piece 4 and a quick-release pressing handle 5. The substrate 1 is in the shape of a rectangular plate. A fixing ring 7 is vertically and perpendicularly arranged at the center of the front surface of the substrate 1. Sliding grooves 6 are penetratively arranged at the left and right ends and the upper middle part of the surface of the substrate 1. A sliding screw 3 is penetratively arranged inside the sliding groove 6. The rear end of the sliding screw 3 is fixedly connected to the fixed slider 2. The front end of the sliding screw 3 is threadedly connected with a quick-release pressing handle 5. The quick-release pressing handle 5 is arranged on the front surface of the substrate 1. A locking pressing piece 4 is arranged between the quick-release pressing handle 5 and the substrate 1. The fixed slider 2 is arranged on the rear surface of the substrate 1. The junction box 11 is externally wrapped and fixed between the fixed sliders 2 at the left and right ends and the upper side. The substrate 1 is in the shape of a horizontally rectangular plate. A fixing ring 7 is integrally and fixedly arranged at the middle part of the front surface of the substrate 1. The rear surface of the substrate 1 is mutually attached and connected to the front surface of the junction box 11. The fixing ring 7 is in the shape of a longitudinally arranged hoisting ear type ring. A suspension rope 8 is fixedly tied inside the fixing ring 7. The bottom of the suspension rope 8 is vertically and perpendicularly provided with a weight 9. The sliding groove 6 is in the shape of a strip groove. Two groups of the sliding grooves 6 at the left and right ends are symmetrically arranged left and right with the vertical center line of the substrate 1 as the reference. Two sliding grooves 6 at the left and right ends are horizontally parallel up and down. The sliding groove 6 at the upper middle part is vertically symmetric left and right with the vertical center line of the substrate 1. Two sliding grooves 6 at the upper middle part are vertically parallel left and right. The fixed slider 2 is in the shape of a rectangular block. The front surface of the fixed slider 2 is fixedly connected to the sliding screw 3. The opposite inner surfaces of the fixed slider 2 are attached to the junction box 11. The fixed sliders 2 on the rear surfaces of the sliding grooves 6 at the left and right ends are vertically parallel to each other and arranged at both ends of the rear surface of the substrate 1. The fixed slider 2 on the rear surface of the sliding groove 6 at the upper middle part is horizontally arranged on the upper side of the rear surface of the substrate 1. The sliding screw 3 is a cylindrical rod with threads on the outside. The diameter of the sliding screw 3 is smaller than the width of the sliding groove 6. A locking pressing piece 4 is inserted on the outside of the front end of the sliding screw 3. The locking pressing piece 4 is a hard rectangular hard board. Through holes are symmetrically and flushly arranged on the surface of the locking pressing piece 4. The diameter of the through hole is larger than the outer diameter of the sliding screw 3. The center distance of the through holes is the same as the distance between the opposite sliding grooves 6. The quick-release pressing handle 5 is a threaded rotation telescopic handle. A rotating screw head is arranged at the end of the quick-release pressing handle 5. The rotating screw head is in the shape of an ellipse. The rotating screw head is threadedly connected to the sliding screw 3. A handle is vertically arranged on the outside of the short side of the rotating screw head. The junction box 11 is horizontally fixedly connected and arranged at the joint of the photovoltaic power generation panel 10.
[0030] Implementation example;
[0031] During use, first vertically relax the quick-release compression handle 5 and loosen the sliding screw 3. Use the quick-release compression handle 5 to expand the fixed slider 2 all the way outwards to the maximum to prepare for clamping the junction box 11. Then align the center point of the substrate 1 with the center point of the junction box 11, and fit the rear surface of the substrate 1 with the front surface of the junction box 11. Then move the quick-release compression handle 5 to drive the sliding screw 3 to drive the locking pressure plate 4 and the fixed slider 2 to move in a clamping manner along the outer surface of the junction box 11. When the inner surface of the fixed slider 2 contacts and clamps the outer surface of the junction box 11, adjust the left and right positions of the substrate 1 to approximate the vertical center of the junction box 11 with the center of the fixed ring 7. Then use the quick-release compression handle 5 to lock the sliding screw 3, so that the locking pressure plate 4 presses downwards to prevent the movement of the fixed slider 2. Finally, press down and lock the quick-release compression handle 5 to further lock and fix the locking pressure plate 4, so as to achieve the locking effect of the fixed slider 2 on the junction box 11.
[0032] Finally, hang the suspension rope 8 and the weight 9 inside the fixed ring 7 to test the junction box 11.
[0033] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. A surface weight fixing device for photovoltaic junction box testing, the weight fixing device is arranged on the outer side of the junction box, characterized in that, The described weight fixing device includes a base plate, a fixed slider, a sliding screw, a locking pressing piece, and a quick-release pressing handle. The base plate is in the shape of a rectangular plate. A fixing ring is vertically and perpendicularly provided at the center of the front surface of the base plate. Sliding grooves are provided in a penetrating manner at both left and right ends and the upper middle part of the surface of the base plate. A sliding screw is provided in a penetrating manner inside the sliding groove. The rear end of the sliding screw is fixedly connected to the fixed slider, and a quick-release pressing handle is threadedly connected to the front end of the sliding screw. The quick-release pressing handle is arranged on the front surface of the base plate, and a locking pressing piece is arranged between the quick-release pressing handle and the base plate. The fixed slider is arranged on the rear surface of the base plate, and a junction box is fixedly arranged in a wrapped and pressed manner between the fixed sliders at both left and right ends and the upper side.
2. The surface weight fixing device for photovoltaic junction box testing according to claim 1, characterized in that, The base plate is in the shape of a horizontally rectangular plate. A fixing ring is integrally and fixedly provided at the middle part of the front surface of the base plate. The rear surface of the base plate is mutually attached and connected to the front surface of the junction box. The fixing ring is in the shape of a longitudinally arranged hoisting ear type ring, and a lifting rope is fixedly arranged by binding inside the fixing ring. A weight is vertically and perpendicularly provided at the bottom of the lifting rope.
3. The surface weight fixing device for testing a photovoltaic junction box according to claim 1, characterized in that, The sliding groove is in the shape of a strip-shaped groove. Two groups of sliding grooves at both left and right ends are symmetrically arranged left and right with the vertical center line of the base plate as the reference. Two sliding grooves are horizontally arranged in parallel up and down at both left and right ends. The sliding groove at the upper middle part is vertically symmetric left and right with the vertical center line of the base plate, and two sliding grooves are vertically arranged in parallel left and right at the upper middle part.
4. The surface weight fixing device for testing a photovoltaic junction box according to claim 1, characterized in that, The fixed slider is in the shape of a rectangular block. The front surface of the fixed slider is fixedly connected to the sliding screw. The opposite inner surfaces of the fixed slider are attached to the junction box. The fixed sliders at the back of the sliding grooves at both left and right ends are vertically parallel to each other and arranged at both ends of the rear surface of the base plate. The fixed slider at the back of the sliding groove at the upper middle part is horizontally arranged on the upper side of the rear surface of the base plate.
5. The surface weight fixing device for testing a photovoltaic junction box according to claim 1, wherein The sliding screw is a cylindrical rod with threads on the outside. The diameter of the sliding screw is smaller than the width of the sliding groove. A locking pressing piece is inserted on the outside of the front end of the sliding screw.
6. The surface weight fixing device for photovoltaic junction box testing according to claim 1, characterized in that, The locking pressing piece is a hard rectangular hard plate. Through holes are symmetrically and flushly provided on the surface of the locking pressing piece. The diameter of the through hole is larger than the outer diameter of the sliding screw, and the center distance of the through holes is the same as the distance between the opposite sliding grooves.
7. A surface weight fixing device for photovoltaic junction box testing according to claim 1, characterized in that, The quick-release pressing handle is a threaded rotation telescopic handle. A rotating screw head is provided at the end of the quick-release pressing handle. The rotating screw head is in the shape of an ellipse, and the rotating screw head is threadedly connected to the sliding screw. A handle is vertically provided on the outside of the short side of the rotating screw head.
8. The surface weight fixing device for photovoltaic junction box testing according to claim 1, wherein, The junction box is horizontally fixedly connected and arranged at the joint of the photovoltaic panels.