Wire testing device and solar cell testing apparatus

Abstract

The utility model relates to the technical field of solar cell, concretely provides a silk line testing arrangement and solar cell testing equipment, aims at solving the problem that the existing silk line's tension adjustment is difficult to be consistent and debugging time is long. For this purpose, the silk line testing arrangement of the utility model includes: support plate and silk line fixed end and silk line adjusting end set on the support plate bottom surface, the silk line fixed end is provided with tension sensor, the silk line adjusting end is provided with tension adjusting assembly, the tension adjusting assembly and tension sensor are configured to be connectable with the both ends of silk line respectively to adjust the tension that silk line suffers. The silk line testing arrangement adjusts the tension that silk line suffers through setting tension adjusting assembly at one end of silk line, and the tension data that silk line suffers is through setting tension sensor at the other end of silk line, thereby ensuring that the tension that all silk lines suffer is consistent, and the installation debugging time is shortened.

Description

Technical Field

[0001] This utility model relates to the field of solar cell technology, specifically providing a wire testing device and a solar cell testing equipment. Background Technology

[0002] Photovoltaic cells require testing during their production process to evaluate their electrical performance. With the rapid development of photovoltaic technology, the performance evaluation of photovoltaic cells has become particularly important, as it directly affects the power generation efficiency and stability of photovoltaic systems.

[0003] The wire test apparatus provides key performance data for R&D personnel and engineers by accurately measuring the current-voltage (IV) characteristics of photovoltaic cells under different conditions, which helps to optimize cell design and manufacturing processes.

[0004] During testing, the installation of the wires requires precise alignment with the test points on the photovoltaic cells, and the tension of each wire must be consistent. When the fixture carries the wires down, consistent tension ensures uniform contact between each wire and the cell. This demands a high level of skill from the operator. Inconsistent tension on the wires will lead to inaccurate test results. Due to the high precision required for wire installation, any deviation necessitates repeated adjustments, which is time-consuming. Adjusting the wire tension is typically done manually, relying on manual judgment of the tension level. During testing, adjustments are made simultaneously, with each wire adjusted individually, requiring extremely high installation precision and significantly increasing the time required for installation and debugging.

[0005] Currently, wire testing devices typically connect the wires via lugs on both sides, with the wires internally connected to the lugs. A section of the wire is left unsecured. During adjustment, the tension of the wires is controlled by winding and unwinding the wires to ensure uniform tension across all wires. However, manually adjusting the wire length to control tension can lead to over-tightening, causing the wires to break. Furthermore, it's difficult to achieve consistent tension for each wire, requiring multiple trials. Manual adjustment can also result in wire breakage, making the entire debugging process time-consuming and labor-intensive. Utility Model Content

[0006] The present invention aims to solve the above-mentioned technical problems, namely, to solve the problems of inconsistent tension adjustment of existing yarns and long debugging time.

[0007] In a first aspect, the present invention provides a wire testing device, comprising: a support plate and a wire fixing end and a wire adjusting end disposed on the bottom surface of the support plate; the wire fixing end is provided with a tension sensor; the wire adjusting end is provided with a tension adjusting assembly; the tension adjusting assembly and the tension sensor are configured to be respectively connected to both ends of the wire to adjust the tension on the wire.

[0008] Furthermore, the tension adjustment assembly includes a lug and a fixing bolt; the lug is disposed below the support plate by the fixing bolt, and a hook is provided on the lug, the hook being adapted to connect to one end of the thread.

[0009] Furthermore, the tension adjustment assembly also includes an elastic component, which is adapted to be disposed between the lug and one end of the thread.

[0010] Furthermore, the elastic component is a double-eared tension spring.

[0011] Furthermore, it also includes two parallel guide rods; each guide rod is respectively positioned below the corresponding elastic component and below the tension sensor, and the two guide rods allow the thread to pass through them.

[0012] Furthermore, the guide rod is provided with a guide groove, and the guide groove allows the thread to pass through it and bypass the guide rod.

[0013] Furthermore, it also includes a control module, which is in communication connection with the tension sensor.

[0014] Furthermore, it also includes a prompting device, which is connected in communication with the control module, so that when the tension value borne by the thread reaches a set value, the control module activates the prompting device to issue a prompting signal.

[0015] Furthermore, a bracket is provided between the support plate and the tension sensor, and the tension sensor is fixedly connected to the bracket.

[0016] In a second aspect, the present invention also provides a solar cell testing device, including the wire testing device described above.

[0017] By adopting the above technical solution, this utility model can adjust the tension on the thread by setting a tension adjustment component at one end of the thread; and by setting a tension sensor at the other end of the thread to digitize the tension data, it ensures that the tension on all threads is consistent. This reduces the technical requirements for installation and debugging personnel, reduces the occurrence of inconsistent tension during thread installation, and shortens the installation and debugging time. The thread testing device has a simple structure, is convenient and quick to install threads, and is easier to replace during maintenance and debugging after thread damage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] In the attached image:

[0020] Figure 1 This is a schematic diagram of the structure of the wire testing device in the embodiments of this application.

[0021] Figure label:

[0022] 10. Support plate; 20. Tension sensor; 30. Tension adjustment assembly; 31. Lifting lug; 32. Fixing bolt; 33. Hook; 34. Elastic component; 40. Thread; 50. Guide rod; 60. Control module; 70. Bracket. Detailed Implementation

[0023] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0024] First, it should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "vertical," "horizontal," "longitudinal," "inner," and "outer," which indicate directional or positional relationships, are based on the directional or positional relationships shown in the accompanying drawings. These are merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0025] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0026] like Figure 1As shown in the illustration, this application provides a wire testing device, including: a support plate 10 and a wire fixing end and a wire adjusting end disposed on the bottom surface of the support plate 10. A tension sensor 20 is disposed at the wire fixing end; a tension adjusting assembly 30 is disposed at the wire adjusting end. The tension adjusting assembly 30 and the tension sensor 20 can be connected to both ends of a wire 40, respectively. The tension applied to the wire 40 is adjusted by the tension adjusting assembly 30, and the tension received by the wire 40 is measured by the tension sensor 20, thus digitizing the tension data received by the wire 40.

[0027] Furthermore, the tension adjustment assembly 30 includes a lug 31 and a fixing bolt 32; the lug 31 is positioned below the support plate 10 via the fixing bolt 32 (based on...). Figure 1 (As shown in the diagram), a hook 33 is provided on the lifting lug 31, and one end of the wire 40 is connected to the hook 33; the fixing bolt 32 is threadedly connected to the support plate 10. The lifting lug 31 is fixedly connected to the lower end of the fixing bolt 32 by threaded engagement. A threaded hole is provided on the support plate 10, and the fixing bolt 32 passes through the threaded hole and is threadedly connected to the support plate 10 through the threaded hole.

[0028] When the fixing bolt 32 is tightened, the fixing bolt 32, through its bolted connection to the support plate 10, can move up and down relative to the support plate 10 in a direction perpendicular to the support plate 10. This causes the lifting lug 31, fixedly connected to the end of the fixing bolt 32, and the hook 33 on the lifting lug 31 to move up and down accordingly. When the lifting lug 31 moves upward in a direction perpendicular to the support plate 10 under the action of the fixing bolt 32, the hook 33 on the lifting lug 31 will tighten the thread 40 hanging on the hook 33. When the thread 40 is tightened, the tension sensor 20 at the fixed end of the thread will detect the tension on the thread 40. Correspondingly, when the lifting lug 31 moves downward in a direction perpendicular to the support plate 10 under the action of the fixing bolt 32, the hook 33 on the lifting lug 31 will loosen the thread 40 hanging on the hook 33.

[0029] Furthermore, the tension adjustment assembly 30 also includes an elastic component 34, which is disposed between the lug 31 and one end of the thread 40. Specifically, the upper end of the elastic component 34 is engaged with the hook 33 disposed on the lug 31, and the lower end of the elastic component 34 is connected to one end of the thread 40. By providing the elastic component 34 between the lug 31 and one end of the thread 40, the lug 31 changes from directly applying tension to the thread 40 to indirectly applying tension to the thread 40 through the elastic component 34. When the lug 31 directly applies tension to the thread 40, there is a risk that the tension may be applied too quickly, causing the thread 40 to break. When the lifting lug 31 indirectly applies tension to the thread 40 using the elastic member 34, the elastic member 34 itself is elastic. This elasticity buffers the tension applied to the thread 40 by the lifting lug 31, allowing the tension sensor 20, connected to the other end of the thread 40, sufficient time to detect the increasing tension on the thread 40 before it breaks. Furthermore, when the tension exceeds the thread 40's bearing capacity, the elastic member 34 provides the operator with time to adjust the tension applied to the thread 40 by the fixing bolt 32. In one specific embodiment, the elastic member 34 can be a double-eared tension spring.

[0030] Furthermore, the wire testing device in this embodiment also includes at least two parallel guide rods 50. In one or more embodiments, the two guide rods 50 are respectively positioned below the corresponding elastic member 34 and below the tension sensor 20, and the wire 40 passes over the two guide rods 50. When the wire 40 is under tension, the section of the wire 40 passing over the guide rods 50 is in contact with the guide rods 50; while the section of the wire 40 between the two guide rods 50 is horizontal. Alternatively, one or more guide rods 50 parallel to the two guide rods 50 are provided between the two guide rods 50, so that the wire 40, under tension, abuts against the bottom of these guide rods 50.

[0031] To limit the position of the wire 40 on the guide rod 50, a guide groove (not shown in the figure) can be provided on the guide rod 50 so that the wire 40 is located in the guide groove when it passes over the guide rod 50, preventing the wire 40 from moving along the axis of the guide rod 50.

[0032] Furthermore, the thread testing device in this embodiment also includes a control module 60, which is communicatively connected to the tension sensor 20 and used to read the tension data of the thread 40 collected by the tension sensor 20. A display screen (not shown in the figure) can also be provided on the control module 60 to display the tension data of the thread 40 collected by the tension sensor 20, so that the operator can understand the stress condition of the thread 40 based on the control module 60.

[0033] Furthermore, the thread testing device in this embodiment also includes a prompting device (not shown in the figure), which is communicatively connected to the control module 60. The control module 60 stores a set value for the tension force on the thread 40. This set value can also be adjusted according to the user's actual needs. When the control module 60 receives a signal from the tension sensor 20 indicating that the tension force on the thread 40 has reached the set value, the control module 60 sends a command to the prompting device to activate it and issue a prompt signal. The prompt signal can be an audio signal, such as a beeping sound or a pre-recorded voice prompt; it can also be a light signal, such as a flashing red or green light; or it can be a combination of audio and light signals, such as issuing a voice prompt while a flashing red light. This embodiment does not specifically limit the type of prompt signal.

[0034] Furthermore, the prompting device can be integrated into the control module 60.

[0035] Furthermore, a bracket 70 is provided between the support plate 10 and the tension sensor 20, and the tension sensor 20 is fixedly connected to the bracket 70. Additionally, the control module 60 and the indicator device are also fixedly connected to the bracket 70. This allows for easy installation and disassembly by first installing the tension sensor 20, control module 60, and indicator device onto the bracket 70, and then installing the bracket 70 onto the support plate 10.

[0036] When using the wire testing device in this embodiment, the wire 40 is first installed. To install the wire 40, one end of the wire 40 is first connected to one end of the elastic member 34, and the other end of the elastic member 34 is then hung on the hook 33 of the lifting lug 31. Then, the fixing bolt 32 is threadedly connected to the support plate 10, and the lifting lug 31 is fixedly connected to the lower end of the fixing bolt 32. In addition, the tension sensor 20, control module 60, and indicator device can also be fixedly connected to the bracket 70, and then the bracket 70 is fixed to the wire fixing end on the bottom surface of the support plate 10. Afterwards, the wire 40 is routed around the two guide rods 50 located below the elastic member 34 and below the tension sensor 20, and then the other end of the wire 40 is connected to the tension sensor 20. This completes the installation of the wire 40.

[0037] Adjusting the tension of the thread 40 can be achieved by adjusting the fixing bolt 32. Tightening the fixing bolt 32 causes it to move upward relative to the support plate 10, which in turn moves the lug 31 fixed to the lower end of the fixing bolt 32 and the hook 33 on the lug 31 upward. This, in turn, applies tension to the thread 40 connected to the lower end of the elastic component 34 via the elastic component 34 connected to the hook 33 of the lug 31, gradually tightening the thread 40. During the pulling process, the tension sensor 20 connected to the other end of the thread 40 detects the tension and sends the collected data to the control module 60. During this process, the change in the tension value of the thread 40 can be displayed on the control module 60. The control module 60 compares the received tension value of the thread 40 with a preset tension value stored in the control module 60. When the tension on the wire 40 reaches the set tension value, the control module 60 sends a signal to the indicator device, which then issues a warning signal to notify the operator to stop tightening the fixing bolt 32. This completes the adjustment of the wire 40. This wire testing device has a simple structure, making wire 40 installation convenient and quick. It also makes wire 40 easier to replace during maintenance and adjustment after damage.

[0038] In addition, by adjusting the tension of the other threads 40 in the manner described above, it can be ensured that the tension on each thread 40 is consistent.

[0039] When testing the ultimate tensile strength of the thread 40, a tensile force is applied to the thread 40 by continuously tightening the fixing bolt 32. The control module 60 can record the tensile force value that the thread 40 withstands when it breaks. During debugging, the set tensile force value of the thread 40 can be determined based on this ultimate tensile force value to prevent the thread 40 from being damaged.

[0040] The wire testing device in this embodiment can adjust the tension on the wire 40 by setting a tension adjustment component 30 at one end of the wire 40; and by setting a tension sensor 20 at the other end of the wire 40 to digitize the tension data, thereby ensuring that the tension on all wires 40 is consistent. This reduces the technical requirements for installation and debugging personnel, reduces the possibility of inconsistent tension during wire installation, and shortens the installation and debugging time. The wire testing device has a simple structure, is convenient and quick to install the wire 40, and is easier to replace during maintenance and debugging after the wire 40 is damaged.

[0041] This application also provides a solar cell testing device (not shown in the figure), which includes the wire testing device as described in any of the above embodiments.

[0042] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A wire testing device, characterized in that, include: Support plate (10) and wire fixing end and wire adjusting end provided on the bottom surface of the support plate (10); A tension sensor (20) is provided at the fixed end of the thread; The thread adjustment end is provided with a tension adjustment component (30); The tension adjustment assembly (30) and the tension sensor (20) are configured to be connected to both ends of the thread (40) respectively to adjust the tension on the thread (40).

2. The wire testing device according to claim 1, characterized in that, The tension adjustment assembly (30) includes a lug (31) and a fixing bolt (32); The lifting lug (31) is set below the support plate (10) by the fixing bolt (32), and the lifting lug (31) is provided with a hook (33), which is adapted to be connected to one end of the wire (40).

3. The wire testing device according to claim 2, characterized in that, The tension adjustment assembly (30) further includes an elastic component (34) adapted to be disposed between the lug (31) and one end of the thread (40).

4. The wire testing device according to claim 3, characterized in that, The elastic component (34) is a double-eared tension spring.

5. The wire testing device according to claim 4, characterized in that, It also includes two parallel guide rods (50); Each of the guide rods (50) is respectively positioned below the corresponding elastic member (34) and below the tension sensor (20), and the two guide rods (50) allow the wire (40) to pass through them.

6. The wire testing device according to claim 5, characterized in that, The guide rod (50) is provided with a guide groove, and the guide groove allows the thread (40) to pass through it and bypass the guide rod (50).

7. The wire testing device according to claim 6, characterized in that, It also includes a control module (60), which is in communication connection with the tension sensor (20).

8. The wire testing device according to claim 7, characterized in that, It also includes a prompting device, which is connected in communication with the control module (60) so that when the tension value borne by the thread (40) reaches the set value, the control module (60) activates the prompting device to issue a prompting signal.

9. The wire testing device according to claim 8, characterized in that, A bracket (70) is provided between the support plate (10) and the tension sensor (20), and the tension sensor (20) is fixedly connected to the bracket (70).

10. A solar cell testing device, characterized in that, Includes the wire testing device as described in any one of claims 1 to 9.

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