Anti-bending durability testing device for photovoltaic cell

Abstract

The invention discloses a bending-resistant durability testing device for a photovoltaic cell. The bending-resistant durability testing device comprises a base, a pressure applying plate and a mounting assembly, the installation assembly comprises an installation part, a movable part and a fixed part. According to the photovoltaic cell anti-bending durability testing device, the motor drives the rotating shaft to rotate, so that the movable part on the rotating shaft translates to drive the mounting part, the fixed part and the pressure plate to move on the rotating shaft, and an included angle is formed between the pressure plate and the rotating shaft. And the lower end of the pressing plate is hinged with the base, so that when the driving pressing plate is obliquely unfolded and reversely rotated, the photovoltaic cell in the middle is clamped and pressed. And meanwhile, a pressure sensor is matched, so that the photovoltaic cell can be tested in different modes, the bending resistance of the photovoltaic cell can be displayed to the greatest extent, and valuable data is provided for later installation and research and development.

Description

Technical Field

[0001] This invention relates to photovoltaic cell testing technology, and more particularly to a photovoltaic cell bending durability testing device. Background Technology

[0002] With the development of new energy sources, solar energy is an inexhaustible resource, making solar panels a key area for promotion. Solar cells are the carriers of solar cells, and their quality directly determines the conversion efficiency of the solar cell; therefore, cell testing is necessary. This involves online measurement of several technical parameters of the cells, primarily including their bending durability.

[0003] The specifications and sizes of solar cells vary, and the support and pressing devices of the testing equipment cannot properly support and press solar cells of different sizes, resulting in errors in the test results and poor adaptability. At the same time, the inability to test solar cells in multiple ways makes the data inaccurate, which affects the installation and research and development of photovoltaic solar cell structures. Summary of the Invention

[0004] To address the shortcomings of the existing technology, this invention proposes a photovoltaic cell bending durability testing device.

[0005] A photovoltaic cell bending durability testing device includes: A base, on which a support column is mounted, a motor is mounted on the support column, and a rotating shaft is mounted on the motor; The pressure plates are symmetrically arranged, with their lower ends hinged to the base via hinge rods. Each pressure plate has a mounting hole, and a mounting assembly is installed inside the mounting hole. The mounting assembly is used to connect the pressure plate to a rotating shaft. When the rotating shaft rotates, it drives the pressure plate to rotate around the hinge rod, thereby changing the distance between the symmetrically arranged pressure plates. The installation components include: The mounting component has a first through hole in the middle, and the rotating shaft is disposed in the first through hole; A movable component is disposed within the first through hole, and the rotating shaft is disposed in the middle of the movable component, so that the movable component rotates within the first through hole; And a fastener that mates with the mounting component, wherein a second through hole is formed in the middle of the fastener, the rotating shaft is disposed within the second through hole, the fastener is mated with the mounting component, and the movable component is confined within the first through hole. When the motor starts, it drives the rotating shaft to rotate, keeping the moving parts moving on the rotating shaft and keeping the moving parts close to or far apart from each other, so that the pressure plate rotates around the hinge rod and applies pressure to the photovoltaic cells located between the pressure plates.

[0006] In this invention, the base is provided with a support, the support is provided with a cylinder, the lower end of the cylinder is provided with a pressure sensor, and the pressure sensor is located at the upper end of the motor.

[0007] In this invention, one end of the rotating shaft is provided with a first threaded portion, and the other end is provided with a second threaded portion, wherein the thread directions of the first threaded portion and the second threaded portion are opposite.

[0008] In this invention, the pressure plate is provided with a positioning groove.

[0009] In this invention, the pressure plate is provided with multiple positioning elements, and the lower end of the positioning element is connected to the positioning groove.

[0010] In this invention, the mounting component consists of a first limiting plate and a first annular body, a second annular body is formed in the middle of the first annular body, and an annular groove is formed between the second annular body and the first annular body.

[0011] In this invention, the first through hole is formed in the middle of the second annular body, the second annular body is provided with multiple dividing grooves, and the second annular body is provided with a limiting body, the limiting body being provided with a guide surface and a limiting surface.

[0012] In this invention, the outer surface of the movable part is formed into a spherical surface, and symmetrically arranged rotating holes are provided on the spherical surface. Symmetrically arranged rotating protrusions are provided on the inner wall of the first through hole. The rotating protrusions are disposed in the rotating holes. A threaded hole that mates with the rotating shaft is formed in the middle of the movable part.

[0013] In this invention, the fixing member is composed of a second limiting plate and a third annular body. The second through hole is formed in the middle of the third annular body. A first guide slope is provided on the outer wall of the third annular body, and a second guide slope is provided on the inner wall.

[0014] In this invention, the inner wall of the second through hole is provided with a limiting groove that cooperates with the limiting body, and the limiting groove is provided with a blocking surface and a contact slope.

[0015] The photovoltaic cell bending durability testing device of this invention has the following beneficial effects: The device uses a motor to drive a rotating shaft, causing the movable parts on the shaft to translate and move the mounting parts, fixing parts, and pressure plate along the shaft, creating an angle between the pressure plate and the shaft. Because the lower end of the pressure plate is hinged to the base, the pressure plate remains tilted and unfolded. When rotating in the reverse direction, it clamps the photovoltaic cell in the middle and applies pressure. Simultaneously, in conjunction with a pressure sensor, different testing methods can be used on the photovoltaic cell to maximize its bending resistance, providing valuable data for subsequent installation and research and development. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the photovoltaic cell bending durability testing device of the present invention; Figure 2 for Figure 1 The main view; Figure 3 for Figure 1 A schematic diagram of the pressure plate and mounting components in the diagram; Figure 4 for Figure 3 Exploded view; Figure 5 for Figure 4 A schematic diagram of the mounting components in the diagram; Figure 6 for Figure 5 A schematic diagram of the structure in another direction; Figure 7 for Figure 5 Cross-sectional view; Figure 8 for Figure 4 Schematic diagram of the moving parts structure; Figure 9 for Figure 4 A schematic diagram of the fastener structure in the diagram; Figure 10 for Figure 9 Cross-sectional view; Figure 11 This is a schematic diagram showing the installation state of the mounting components, movable components, and fixing components in this invention. Figure 12 This is a schematic diagram showing the installation state of the photovoltaic cell, rotating rod, and pressure plate in this invention.

[0017] In the diagram: 1. Base; 2. Pressure plate; 3. Mounting assembly; 4. Hinge rod; 5. Photovoltaic cell; 6. Pressure sensor; 7. Support column; 8. Motor; 9. Rotating shaft; 10. First threaded part; 11. Second threaded part; 12. Support; 13. Cylinder; 14. Mounting hole; 15. First annular body; 16. Positioning groove; 17. Positioning component; 18. Arc groove; 19. Rotating rod; 20. Mounting component; 21. Fixing component; 22. Second guide slope; 23. Movable component; 24. First through hole; 25. Threaded hole; 26. First limiting plate; 27. Second annular body; 28. Annular groove; 29. ​​Third annular body; 30. Dividing groove; 31. Limiting body; 32. Guide surface; 33. Limiting surface; 34. Contact slope; 35. Blocking surface; 36. Limiting groove; 37. Spherical surface; 38. Rotating protrusion; 39. Rotating hole; 40. Second through hole; 41. Second limiting plate; 42. First guide slope; 43. Insertion groove. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0019] like Figures 1 to 12 As shown, the photovoltaic cell bending durability testing device of the present invention includes a base 1, a pressure plate 2, and a mounting assembly 3. The pressure plates 2 are symmetrically arranged, and the pressure plates 2 and 2 are respectively located on both sides of the base 1. They are hinged to the base 1 by a hinge rod 4, which allows the pressure plates 2 to rotate around the hinge rod 4. When the pressure plates 2 are close to each other, they can apply pressure to the photovoltaic cell 5 in the middle, causing it to bend. When bending, the middle of the photovoltaic cell 5 bends and moves upward. The pressure from the photovoltaic cell 5 is detected by a pressure sensor 6 located at the upper end of the photovoltaic cell 5.

[0020] A support column 7 is mounted on the base 1, a motor 8 is mounted on the support column 7, and a rotating shaft 9 is mounted on the motor 8. One end of the rotating shaft 9 has a first threaded portion 10, and the other end has a second threaded portion 11. The threads of the first threaded portion 10 and the second threaded portion 11 are in opposite directions. When the motor 8 drives the rotating shaft 9 to rotate, the pressure plates 2 at both ends of the rotating shaft 9 can move closer or further apart, thus facilitating the clamping of photovoltaic cells 5 of different lengths and causing the photovoltaic cells 5 to deform under stress. Furthermore, to prevent the photovoltaic cells 5 from shattering during testing, the testing device can be placed in a container made of transparent material for observation, ensuring the safety of the testing personnel.

[0021] A support 12 is provided on the base 1, and a cylinder 13 is provided on the support 12. A pressure sensor 6 is provided at the lower end of the cylinder 13, and the pressure sensor 6 is located at the upper end of the motor 8. The pressure sensor 6 can detect the pressure on the photovoltaic cell 5, and can also prevent the middle position of the photovoltaic cell 5 from bending and deforming under force.

[0022] When the pressure sensor 6 blocks the middle position of the photovoltaic cell 5, the pressure plate 2 can continue to clamp the photovoltaic cell 5, thereby reducing the distance between the pressure plates 2 and detecting the pressure on the photovoltaic cell 5.

[0023] Furthermore, since the pressure sensor 6 is located at the lower end of the cylinder 13, the position of the pressure sensor 6 can be changed by the cylinder 13, thereby enabling the detection of photovoltaic cells 5 of different sizes.

[0024] Additionally, after the photovoltaic cell 5 is bent under pressure by the pressure plate 2, the cylinder 13 can be activated. This cylinder 13 drives the pressure sensor 6 to apply pressure to the upward-bent photovoltaic cell 5. It can then be observed whether the bent photovoltaic cell 5 deforms downwards under pressure, or whether it cracks or breaks due to a greater degree of upward bending. This allows for different degrees of bending durability testing of the photovoltaic cell 5 using different methods.

[0025] The pressure plates 2 are symmetrically arranged. The lower end of the pressure plates 2 is hinged to the base 1 through the hinge rod 4. The pressure plates 2 are provided with a mounting hole 14. The inner diameter of the mounting hole 14 is matched with the outer diameter of the first annular body 15 for installation.

[0026] A positioning groove 16 is provided on the pressure plate 2. Multiple positioning elements 17 are provided on the pressure plate 2, and the lower end of the positioning element 17 is connected to the positioning groove 16. By inserting both ends of the photovoltaic cell 5 into the positioning groove 16 and then rotating the positioning element 17, the positioning element 17 applies pressure to fix both ends of the photovoltaic cell 5, which facilitates the pressure plate 2 to drive the photovoltaic cell 5 to bend under force.

[0027] At the same time, such as Figure 12 As shown, an arc-shaped groove 18 is provided on the pressure plate 2, and a rotating rod 19 is provided inside the arc-shaped groove 18. A part of the rotating rod 19 is located outside the arc-shaped groove 18. The arc angle of the arc-shaped groove 18 is greater than 180°, so that the rotating rod 19 cannot be moved out from the opening of the arc-shaped groove 18, but can only be disassembled and assembled from the sides. To prevent the rotating rod 19 from moving out from the sides of the arc-shaped groove 18, blocking plates (not shown in the figure) can be provided on both sides of the pressure plate 2 to restrict the position of the rotating rod 19.

[0028] An insertion slot 43 is provided in the middle of the rotating rod 19. The insertion slot 43 is used for inserting the photovoltaic cell 5 and restricts the position of the photovoltaic cell 5. When the pressure plate 2 approaches, it can cause the photovoltaic cell 5 to deform under force, bending upward in the middle. Since the two ends of the photovoltaic cell 5 are set in the insertion slot 43, they can drive the rotating rod 19 to rotate in the arc groove 18, so that it can adapt to the tilt angle of the photovoltaic cell 5 under force bending, and can better maintain the pressure of the pressure plate 2 on the photovoltaic cell 5.

[0029] A mounting assembly 3 is provided within the mounting hole 14. The mounting assembly 3 connects the pressure plate 2 to the rotating shaft 9. When the rotating shaft 9 rotates, it drives the pressure plate 2 to rotate around the hinge rod 4, changing the distance between the symmetrically arranged pressure plates 2. Through the mating and limiting action of the mounting member 20 and the fixing member 21, the movable member 23 is confined within the first through hole 24. This allows the rotating shaft 9 to drive the movable member 23 to translate during rotation, and also accommodates the adaptive rotation of the pressure plate 2 due to different angles. Figure 11As shown, at this time, the center line of the threaded hole 25 in the middle of the movable part 23 is kept horizontal, while the center lines of the mounting part 20 and the fixing part 21 coincide, but are set at an angle. This is because the pressure plate 2 is in an angled state. The reason for the angled state is that the pressure plate 2 and the rotating shaft 9 are not set perpendicularly at this time, so the mounting part 20 and the fixing part 21 will be driven to rotate, thereby making the center lines of the mounting part 20, the fixing part 21 and the movable part 23 not coincide.

[0030] The mounting assembly 3 includes a mounting member 20, a movable member 23, and a fixing member 21. The mounting member 20 and the fixing member 21 are mated, restricting the movable member 23 to the middle position of the mounting member 20, preventing it from moving out. Simultaneously, it allows rotation between the movable member 23 and the mounting member 20, the angle of rotation depending on the distance between the maximum outer diameter of the rotating shaft 9 and the inner wall of the first through hole 24. When the rotating shaft 9 is not in contact with the inner wall of the first through hole 24, it indicates that the movable member 23 can still translate along the rotating shaft 9, causing the mounting member 20 and the fixing member 21 to move, thereby allowing the pressure plate 2 to continue tilting, increasing or decreasing the distance between the pressure plates 2 and 2, facilitating the placement of photovoltaic cells 5 of different lengths or allowing for greater pressure to be applied to the photovoltaic cells 5.

[0031] A first through hole 24 is formed in the middle of the mounting component 20, and the rotating shaft 9 is disposed in the first through hole 24. The mounting component 20 is composed of a first limiting plate 26 and a first annular body 15. A second annular body 27 is formed in the middle of the first annular body 15, and an annular groove 28 is formed between the second annular body 27 and the first annular body 15. The annular groove 28 is used to accommodate a third annular body 29.

[0032] A first through hole 24 is formed in the middle of the second annular body 27. Multiple dividing grooves 30 are provided on the second annular body 27. A limiting body 31 is provided on the second annular body 27, with a guide surface 32 and a limiting surface 33. The guide surface 32 engages with the contact inclined surface 34, and the blocking surface 35 engages with the limiting surface 33. Through the division by the dividing grooves 30, multiple individual parts can be formed on the second annular body 27, facilitating deformation under force and allowing it to move into the annular groove 28 when subjected to force.

[0033] When the mounting part 20 is in its natural state, the second annular body 27 is tilted into the annular groove 28 near the position of the limiting body 31, and remains in an open state. After the fixing part 21 is inserted into the annular groove 28, the limiting body 31 can be forcefully installed in the limiting groove 36.

[0034] The movable part 23 is disposed within the first through hole 24, and the rotating shaft 9 is disposed in the middle of the movable part 23. The movable part 23 rotates within the first through hole 24. The outer surface of the movable part 23 forms a spherical surface 37, which facilitates rotation with the first through hole 24.

[0035] A symmetrically arranged rotating hole 39 is provided on the spherical surface 37, and a symmetrically arranged rotating protrusion 38 is provided on the inner wall of the first through hole 24. The rotating protrusion 38 is located inside the rotating hole 39, and a threaded hole 25 that mates with the rotating shaft 9 is formed in the middle of the movable member 23.

[0036] The rotating protrusion 38 and the rotating hole 39 allow the movable part 23 to rotate within the first through hole 24, and also allow the movable part 23 to translate when the rotating shaft 9 rotates, maintaining the engagement between the rotating hole 39 and the rotating protrusion 38 on the movable part 23, so that the mounting part 20 moves together with the movable part 23. Under the action of the hinge rod 4, the lower end of the pressure plate 2 cannot move, thereby causing the pressure plate 2 to change from a vertical state to an inclined state, or from an inclined state to a vertical state.

[0037] The fixing member 21 cooperates with the mounting member 20, and a second through hole 40 is formed in the middle of the fixing member 21. The rotating shaft 9 is set in the second through hole 40. The fixing member 21 and the mounting member 20 are connected to restrict the movable member 23 in the first through hole 24.

[0038] The fastener 21 consists of a second limiting disc 41 and a third annular body 29. The diameters of the first limiting disc 26 and the second limiting disc 41 are both larger than the inner diameter of the mounting hole 14. A second through hole 40 is formed in the middle of the third annular body 29. A first guide slope 42 is provided on the outer wall of the third annular body 29, and a second guide slope 22 is provided on the inner wall.

[0039] The inner wall of the second through hole 40 is provided with a limiting groove 36 that cooperates with the limiting body 31. The limiting groove 36 is provided with a blocking surface 35 and a contact slope 34.

[0040] The first guide slope 42 facilitates the insertion of the third annular body 29 into the annular groove 28, while the second guide slope 22 is used to push the limiting body 31 on the second annular body 27, so that the limiting body 31 enters the limiting groove 36.

[0041] When motor 8 starts, it drives the rotating shaft 9 to rotate, keeping the movable part 23 moving on the rotating shaft 9. The movable parts 23 are kept close to or far apart from each other. Since the movable part 23 is constrained to the pressure plate 2 by the mounting part 20 and the fixing part 21, the lower end of the pressure plate 2 rotates around the hinge rod 4, applying pressure to the photovoltaic cell 5 located between the pressure plates 2 and 2. During testing, the length between the pressure plates 2 and 2 can be measured first when the photovoltaic cell 5 is placed in the positioning groove 16. Then, motor 8 is started and stopped when the photovoltaic cell 5 breaks. The length between the pressure plates 2 and 2 is measured again at this point. The data is input into the analysis system for analysis. The analysis system can use existing technology, so it will not be described in detail here.

[0042] When the pressure plate 2 moves in the direction of F1, the middle of the photovoltaic cell 5 moves in the direction of F2, while the pressure sensor 6 is driven by the cylinder 13 to move in the direction of F3.

[0043] When the pressure plate 2 and the pressure plate 2 clamp the photovoltaic cell 5 to a critical value, the cylinder 13 drives the pressure sensor 6 to apply pressure to the bent photovoltaic cell 5 to detect the pressure. The pressure value of the pressure sensor 6 when the photovoltaic cell 5 breaks is observed. Then the distance between the pressure plate 2 and the pressure plate 2 is measured at this time. The pressure value and distance value are input into the analysis system for analysis.

[0044] The installation of component 3 facilitates the rapid assembly between pressure plate 2 and rotating shaft 9 without the need for other tools, making the testing device easier to process and use.

[0045] Of course, the specific testing methods can be changed according to actual needs, so they will not be elaborated here.

[0046] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A device for testing the bending durability of photovoltaic cells, characterized in that, include: A base, on which a support column is mounted, a motor is mounted on the support column, and a rotating shaft is mounted on the motor; The pressure plates are symmetrically arranged, with their lower ends hinged to the base via hinge rods. Each pressure plate has a mounting hole, and a mounting assembly is installed inside the mounting hole. The mounting assembly is used to connect the pressure plate to a rotating shaft. When the rotating shaft rotates, it drives the pressure plate to rotate around the hinge rod, thereby changing the distance between the symmetrically arranged pressure plates. The installation components include: The mounting component has a first through hole in the middle, and the rotating shaft is disposed in the first through hole; A movable component is disposed within the first through hole, and the rotating shaft is disposed in the middle of the movable component, so that the movable component rotates within the first through hole; And a fastener that mates with the mounting component, wherein a second through hole is formed in the middle of the fastener, the rotating shaft is disposed within the second through hole, the fastener is mated with the mounting component, and the movable component is confined within the first through hole. When the motor starts, it drives the rotating shaft to rotate, keeping the moving parts moving on the rotating shaft and keeping the moving parts close to or far apart from each other, so that the pressure plate rotates around the hinge rod and applies pressure to the photovoltaic cells located between the pressure plates.

2. The photovoltaic cell bending durability testing device according to claim 1, characterized in that, The base is provided with a support, the support is provided with a cylinder, the lower end of the cylinder is provided with a pressure sensor, and the pressure sensor is located at the upper end of the motor.

3. The photovoltaic cell bending durability testing device according to claim 1, characterized in that, One end of the rotating shaft is provided with a first threaded portion, and the other end is provided with a second threaded portion. The threads of the first threaded portion and the second threaded portion are in opposite directions.

4. The photovoltaic cell bending durability testing device according to claim 1, characterized in that, The pressure plate is provided with a positioning groove.

5. The photovoltaic cell bending durability testing device according to claim 4, characterized in that, The pressure plate is provided with multiple positioning elements, and the lower end of each positioning element is connected to a positioning groove.

6. The photovoltaic cell bending durability testing device according to claim 1, characterized in that, The mounting component consists of a first limiting plate and a first annular body, with a second annular body formed in the middle of the first annular body, and an annular groove formed between the second annular body and the first annular body.

7. The photovoltaic cell bending durability testing device according to claim 6, characterized in that, The first through hole is formed in the middle of the second annular body. The second annular body is provided with multiple dividing grooves and a limiting body. The limiting body is provided with a guide surface and a limiting surface.

8. The photovoltaic cell bending durability testing device according to claim 7, characterized in that, The movable part has a spherical surface on its exterior, and symmetrically arranged rotating holes are provided on the spherical surface. Symmetrically arranged rotating protrusions are provided on the inner wall of the first through hole. The rotating protrusions are located inside the rotating holes. A threaded hole that mates with the rotating shaft is formed in the middle of the movable part.

9. The photovoltaic cell bending durability testing device according to claim 8, characterized in that, The fixing component consists of a second limiting plate and a third annular body. The third annular body has a second through hole in the middle. The outer wall of the third annular body is provided with a first guide slope, and the inner wall is provided with a second guide slope.

10. The photovoltaic cell bending durability testing device according to claim 9, characterized in that, The inner wall of the second through hole is provided with a limiting groove that cooperates with the limiting body. The limiting groove is provided with a blocking surface and a contact slope.

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