Bending test device for flexible photovoltaic module
By using a bending test device for flexible photovoltaic modules, and through the cooperation of clamps and bending shafts, precise bending tests of flexible photovoltaic modules can be achieved. This solves the problem of inaccurate testing of the entire area in existing testing methods, and improves the accuracy and efficiency of test results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIUZHITAO NEW ENERGY TECH (SHANGHAI) CO LTD
- Filing Date
- 2025-05-15
- Publication Date
- 2026-04-24
AI Technical Summary
Existing testing methods for the bending performance of flexible photovoltaic modules cannot accurately test the entire area of the module, resulting in inaccurate bending performance results.
A bending test device for flexible photovoltaic modules is adopted. By using the first clamp and the second clamp to move relatively left and right on the bending test layer shell, combined with the bending shaft, it is ensured that the module length area between the left and right ends of the flexible photovoltaic module under test is always bent with a fixed shaft bending degree, so as to achieve accurate bending degree testing of flexible photovoltaic modules.
This method improves the accuracy of overall regional bending tests for flexible photovoltaic modules, enhances the accuracy of test results, and increases testing efficiency by allowing other functional tests to be performed directly after the bending test.
Smart Images
Figure CN224163507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the photovoltaic field, specifically to a bending test device for flexible photovoltaic modules. Background Technology
[0002] Flexible photovoltaic modules offer advantages over traditional rigid modules, including lighter weight, flexibility, and lower installation costs, making them promising for applications in building-integrated photovoltaics, portable devices, and aerospace. Prior patent applications CN202211090758X, CN202310136324.7, and CN202310175757.3 specifically disclose methods for transforming brittle monocrystalline silicon into flexible monocrystalline silicon, giving monocrystalline silicon solar cells excellent flexibility and expanding their application scenarios.
[0003] Unlike the testing of traditional rigid photovoltaic modules, flexible photovoltaic modules require additional bending performance testing to verify their reliability and ensure product quality. However, conventional methods for testing the bending performance of flexible photovoltaic modules typically involve selecting a few stress points on the module and conducting bending tests, which differs significantly from actual working conditions.
[0004] Although some technologies have proposed bending flexible photovoltaic modules into several turns for bending performance testing, this testing method only covers the first turn of the module and the expected bending degree. The bending degree of the remaining turns of the module is far from the expected design due to the increasing thickness of the module as it is rolled. Therefore, it is impossible to test the expected bending degree of the entire module area. Consequently, the bending performance test results are obviously inaccurate.
[0005] Therefore, based on the inventor's many years of focused research experience in the field of flexible photovoltaic modules, the applicant decided to seek technical solutions to address the above-mentioned technical problems. Summary of the Invention
[0006] In view of this, the purpose of this utility model is to provide a bending test device for flexible photovoltaic modules, which enables the bending test of the component length area located between the left end and the right end of the flexible photovoltaic module to be tested by maintaining a fixed shaft bending degree (i.e., bending all component length areas in a state of bending and wrapping about half a turn) throughout the entire bending test process of the flexible photovoltaic module under test. Through a simple structure, the bending test of the expected shaft bending degree of the flexible photovoltaic module is accurately achieved, making the bending test results of the flexible photovoltaic module more accurate.
[0007] The technical solution adopted in this utility model is as follows:
[0008] A bending test device for flexible photovoltaic modules includes a bending test layer, wherein the bending test layer comprises a bending test layer housing, a first clamping plate, a second clamping plate, and a bending shaft respectively mounted on the bending test layer housing; wherein...
[0009] The installation height of the second clamping plate is less than the installation height of the first clamping plate but greater than the installation height of the bending shaft.
[0010] The first clamp is used for fixed installation and connection of the left end of the flexible photovoltaic module under test;
[0011] The second clamp is used for fixed installation and connection of the right end of the flexible photovoltaic module under test;
[0012] The bending shaft is used to bend and wrap the flexible photovoltaic module under test.
[0013] The first clamp and / or the second clamp can be displaced relative to each other on the bending test layer housing. By the left and right displacement of the first clamp and / or the second clamp on the bending test layer housing, a bending test is performed on the component length region located between the left end and the right end of the flexible photovoltaic module under test with a fixed shaft bending degree.
[0014] Preferably, the bending shaft is detachably mounted on the bending test layer housing; wherein the outer diameter of the bending shaft is set according to the expected bending degree test requirements, so as to facilitate the replacement of the bending shaft with the required corresponding outer diameter.
[0015] Preferably, the first clamping plate and the second clamping plate are respectively provided with a plurality of mounting holes, which are used for fastening and connecting with the corresponding ends of the flexible photovoltaic module under test.
[0016] Preferably, the first clamping plate, the second clamping plate, and the bending shaft are all parallel and correspond to the width direction of the flexible photovoltaic module under test, respectively; the left and right displacement directions correspond to the length direction of the flexible photovoltaic module under test.
[0017] Preferably, the first clamping plate achieves relative left and right displacement on the bending test layer housing through a first clamping plate driving unit; wherein, the first clamping plate driving unit includes a first clamping plate motor mounted on the bending test layer housing, and a first clamping plate screw drivenly connected to the first clamping plate motor; at least one end of the first clamping plate is drivenly connected to the first clamping plate screw, and both ends of the first clamping plate are slidably mounted on the first clamping plate slide rail.
[0018] Preferably, the second clamping plate achieves relative left and right displacement on the bending test layer housing through a second clamping plate driving unit; wherein, the second clamping plate driving unit includes a second clamping plate motor mounted on the bending test layer housing, a second clamping plate lead screw drivenly connected to the second clamping plate motor, and a clamping cylinder drivenly connected to the second clamping plate lead screw; at least one end of the second clamping plate is fixedly connected to the clamping cylinder, and the clamping cylinder is slidably mounted on the second clamping plate slide rail.
[0019] Preferably, lifting cylinders are provided on the front and rear sides of the bending test layer housing located outside the bending shaft bar; when the second clamping plate moves to the position of the lifting cylinder, the clamping cylinder releases the second clamping plate to ensure that the second clamping plate is disengaged from the second clamping plate slide rail, and the lifting cylinder drives the second clamping plate upward until it is flush with the first clamping plate, so that the flexible photovoltaic module under test is flattened.
[0020] Preferably, it includes one or more stacked functional test layers located above the bending test layer; wherein each functional test layer is in communication with the bending test layer, and includes a functional test housing and a functional test module fixedly or relatively displaceable and mounted on the functional test housing.
[0021] Preferably, the functional test layer is an EL test layer, a PL test layer, or an IV test layer.
[0022] Preferably, the EL test layer includes an EL test housing and an EL test module that is relatively movable to the left and right or front and back on the EL test housing; the EL test module includes an EL test beam for mounting an EL camera and an EL drive module, and the EL test beam is drivenly connected to the EL drive module;
[0023] The PL test layer includes a PL test housing and a PL test module that can be displaced to the left or right or back and forth on the PL test housing; the PL test module includes a PL test beam for mounting a PL camera and a PL drive module, and the PL test beam is connected to the PL drive module in a transmission manner.
[0024] The IV test layer includes an IV test housing and a xenon lamp fixedly mounted on the IV test housing;
[0025] When the IV test layer exists simultaneously with the EL test layer or the PL test layer, the IV test layer is located on the top layer.
[0026] It should be noted that, in this application, EL testing refers to electroluminescence detection, PL testing refers to photoluminescence detection, and IV testing refers to xenon lamp aging testing. Of course, other functional test layers can be further stacked according to the testing needs of flexible photovoltaic modules, and this application does not impose any restrictions on this.
[0027] This invention proposes a bending test layer structure mainly composed of a first clamping plate, a second clamping plate, and a bending shaft. When performing bending tests on flexible photovoltaic modules, only the left end of the flexible photovoltaic module under test needs to be fixedly installed and connected to the first clamping plate. After the flexible photovoltaic module under test is bent and wrapped around the bending shaft (approximately half a turn), its right end is fixedly installed and connected to the second clamping plate. At least one of the clamping plates is subjected to relative left and right displacement on the bending test layer shell. This ensures that throughout the entire bending test of the flexible photovoltaic module under test, the bending test of the component length area between the left end and the right end of the flexible photovoltaic module under test is achieved with a fixed shaft bending degree (i.e., all component length areas are bent in a state of approximately half a turn). This simple structure accurately achieves the bending test of the expected shaft bending degree of the flexible photovoltaic module, making the bending test results of the flexible photovoltaic module more accurate.
[0028] This invention also proposes to set one or more stacked functional test layers above the bending test layer and communicate with it. In practical applications, after the flexible photovoltaic module completes the bending test, other functional tests can be performed directly without removing the flexible photovoltaic module from the bending test device and sending it to the relevant test devices for functional testing. This greatly speeds up the testing efficiency of flexible photovoltaic modules and makes the evaluation of the bending performance of flexible photovoltaic modules more accurate. Attached Figure Description
[0029] Figure 1 This is a schematic diagram of the structure of the bending test layer according to a specific embodiment of this application;
[0030] Figure 2 This is a schematic diagram of the clamping cylinder according to a specific embodiment of this application;
[0031] Figure 3 This is a structural schematic diagram of the lifting cylinder according to a specific embodiment of this application;
[0032] Figure 4 This is a partial structural schematic diagram of the bending test layer during the bending test process according to a specific embodiment of this application;
[0033] Figure 5 This is a schematic diagram of the structure of the bending test layer after the bending test process is completed in a specific embodiment of this application (the other end of the second clamping plate 13 is not in the...). Figure 5 (as shown)
[0034] Figure 6 This is a schematic diagram of the structure of the EL test layer according to a specific embodiment of this application;
[0035] Figure 7This is a schematic diagram of the structure of the PL test layer in a specific embodiment of this application;
[0036] Figure 8 This is a schematic diagram of the structure after the bending test layer, EL test layer, PL test layer and IV test layer are stacked in a specific embodiment of this application. Detailed Implementation
[0037] This embodiment proposes a bending test device for flexible photovoltaic modules, including a bending test layer. The bending test layer includes a bending test layer shell, a first clamping plate, a second clamping plate, and a bending shaft respectively installed on the bending test layer shell. The installation height of the second clamping plate is less than the installation height of the first clamping plate but greater than the installation height of the bending shaft. The first clamping plate is used for fixed installation connection to the left end of the flexible photovoltaic module under test. The second clamping plate is used for fixed installation connection to the right end of the flexible photovoltaic module under test. The bending shaft is used to bend and wind the flexible photovoltaic module under test. The first clamping plate and / or the second clamping plate can be relatively displaced left and right on the bending test layer shell. Through the left and right displacement of the first clamping plate and / or the second clamping plate on the bending test layer shell, a fixed bending degree of the shaft is used to achieve bending testing of the module length region located between the left end and the right end of the flexible photovoltaic module under test.
[0038] To enable those skilled in the art to better understand the technical solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.
[0039] Please see Figure 1 , Figure 2 , Figure 3 and combined Figure 4 and Figure 5As shown, this embodiment proposes a bending test device for flexible photovoltaic modules, including a bending test layer 1. The bending test layer 1 includes a bending test layer housing 11, a first clamping plate 12, a second clamping plate 13, and a bending shaft 14 respectively installed on the bending test layer housing 11. The installation height of the second clamping plate 13 is less than the installation height of the first clamping plate 12 and greater than the installation height of the bending shaft 14. The first clamping plate 12 is used for fixed installation connection to the left end of the flexible photovoltaic module 100 under test. The second clamping plate 13 is used for fixed installation connection to the right end of the flexible photovoltaic module 100 under test. The bending shaft 14 is used to bend and wind the flexible photovoltaic module 100 under test. The first clamping plate 12 and / or the second clamping plate 13 can be relatively displaced left and right on the bending test layer housing 11. Through the left and right displacement of the first clamping plate 12 and / or the second clamping plate 13 on the bending test layer housing 11, a fixed shaft bending degree is used to achieve bending test on the module length region located between the left end and the right end of the flexible photovoltaic module 100 under test.
[0040] Preferably, in this embodiment, the bending shaft 14 is detachably mounted on the bending test layer housing 11; wherein, the outer diameter of the bending shaft 14 is set according to the expected bending degree test requirements, so as to facilitate the replacement of the bending shaft 14 with the required corresponding outer diameter.
[0041] Preferably, in order to achieve a fast and reliable installation and positioning effect for the flexible photovoltaic module 100 under test, in this embodiment, the first clamping plate 12 and the second clamping plate 13 are respectively provided with a plurality of mounting holes 15, which are used to fasten and connect with the corresponding ends of the flexible photovoltaic module 100 under test by fasteners.
[0042] Preferably, in this embodiment, the first clamping plate 12, the second clamping plate 13 and the bending shaft 14 are all parallel and correspond to the width direction of the flexible photovoltaic module 100 under test, respectively; the left and right displacement directions correspond to the length direction of the flexible photovoltaic module 100 under test.
[0043] In this embodiment, when performing a bending test on the flexible photovoltaic module 100 under test, only the left end of the flexible photovoltaic module 100 under test needs to be fixedly installed and connected to the first clamping plate 12. After the flexible photovoltaic module 100 under test is bent and wound around the bending shaft 14 (approximately bent and wound half a turn), its right end is fixedly installed and connected to the second clamping plate 13. At this time, both the first clamping plate 12 and the second clamping plate 13 are located to the left of the bending shaft 14. Then, the first clamping plate 12 moves to the left relative to the bending test layer housing 11, and the second clamping plate 13 moves to the right relative to the bending test layer housing 11. This ensures that throughout the bending test, the bending test is performed on the component length area between the left end and the right end of the flexible photovoltaic module 100 under test with a fixed shaft bending degree (i.e., all component length areas are bent at approximately half a turn). After the bending test is completed, the first clamping plate 12 is located to the left of the bending shaft 14, and the second clamping plate 13 is located to the right of the bending shaft 14.
[0044] Preferably, in this embodiment, the first clamping plate 12 achieves relative left and right displacement on the bending test layer housing 11 through a first clamping plate driving unit; wherein, the first clamping plate driving unit includes a first clamping plate motor 21 mounted on the bending test layer housing 11, and a first clamping plate lead screw 22 drivenly connected to the first clamping plate motor 21; one end of the first clamping plate 12 is drivenly connected to the first clamping plate lead screw 22 (in other embodiments, it can also be configured as a dual-motor-dual-lead screw driving method, that is, both ends of the first clamping plate 12 are drivenly connected to a clamping plate lead screw respectively), and both ends of the first clamping plate 12 are slidably mounted on the first clamping plate slide rail 23 respectively; preferably, in this embodiment, the second clamping plate 13 is driven by a second clamping plate driving unit. The relative left and right displacement on the bending test layer housing 11; wherein, the second clamping plate driving unit includes a second clamping plate motor 31 mounted on the bending test layer housing 11, a second clamping plate lead screw 32 driven by the second clamping plate motor 31, and a clamping cylinder 33 driven by the second clamping lead screw 32; one end of the second clamping plate 13 is fixedly connected to the clamping cylinder 33 (in other embodiments, it can also be configured as a double clamping cylinder driving method, that is, both ends of the second clamping plate 13 are respectively fixedly connected to a clamping cylinder), and the clamping cylinder 33 is slidably mounted on the second clamping plate slide rail 34; preferably, in this embodiment, fastening holes 33a for fixing the ends of the second clamping plate 13 are provided between the clamping cylinders 33;
[0045] Of course, it should be noted that the driving requirements of the first clamping plate 12 or the second clamping plate 13 can also be achieved by other known driving structures. This is a conventional technical means for those skilled in the art, and this embodiment does not impose any special restrictions on it.
[0046] Preferably, to facilitate the direct performance of other functional tests after the flexible photovoltaic module 100 under test completes the bending test, in this embodiment, lifting cylinders 35 are respectively provided on the front and rear sides of the bending test layer housing 11 located outside the bending shaft 14. When the second clamping plate 13 moves to the position of the lifting cylinder 35, the clamping cylinder releases the second clamping plate 13 to ensure that the second clamping plate 13 is disengaged from the second clamping plate slide rail 34. The lifting cylinder 35 drives the second clamping plate 13 upward until it is flush with the first clamping plate 12, so that the flexible photovoltaic module 100 under test is flattened, thereby facilitating the direct performance of other tests. It should be noted that after the flexible photovoltaic module 100 under test completes the bending test, the second clamping plate 13 can also be set to be flush with the first clamping plate 12 by other known driving structures. This is a conventional technical means for those skilled in the art, and this embodiment does not impose any particular limitation on it.
[0047] Preferably, in this embodiment, the bending test device further includes one or more stacked functional test layers located above the bending test layer 1; wherein each functional test layer is in communication with the bending test layer 1, including a functional test housing and a functional test module fixedly or relatively displaceable and mounted on the functional test housing.
[0048] Preferably, please refer to [see also] Figure 6 , Figure 7 and Figure 8 As shown, in this embodiment, the functional test layer is an EL test layer 4, a PL test layer 5, or an IV test layer 6; preferably, the EL test layer 4 includes an EL test housing 41, and a relatively movable left-right or front-back ( Figure 6 Specifically, this is represented as a forward and backward displacement, and the direction of this forward and backward displacement is... Figure 1 The left and right displacement direction of the bending test layer shown can be set according to actual needs in other embodiments, and this embodiment does not impose a unique limitation on it. The EL test module is mounted on the EL test housing 41; the EL test module includes an EL test beam 43 for mounting an EL camera 42 (a known structure) and an EL drive module 44, with the EL test beam 43 and the EL drive module 44 being drively connected; the PL test layer 5 includes a PL test housing 51, and a relatively movable left and right or front and back displacement (…). Figure 7 Specifically, this is represented as a forward and backward displacement, and the direction of this forward and backward displacement is... Figure 1The left and right displacement directions of the bending test layer shown can be set according to actual needs in other embodiments, and this embodiment does not impose a unique limitation on this. The PL test module is installed on the PL test housing 51. The PL test module includes a PL test beam 53 with a PL camera 52 (a known structure) and a PL drive module 54, and the PL test beam 53 is connected to the PL drive module 54 in a transmission connection. The IV test layer 6 includes an IV test housing 61 and a xenon lamp (a known structure, not shown in the figure) fixedly installed on the IV test housing 61. When the IV test layer 6 exists simultaneously with the EL test layer 4 or the PL test layer 5, the IV test layer 6 is located on the top layer.
[0049] It should be noted that the PL drive module and EL drive module used in this embodiment can adopt a known combination drive scheme of motor, lead screw and slide rail, or other known drive schemes. This embodiment does not impose any special restrictions on this.
[0050] Specifically, preferably, in this embodiment, the bending test device includes a PL test layer 4, an EL test layer 5, and an IV test layer 6 stacked and connected above the bending test layer 1. That is, the bending test layer 1 is located at the bottom layer, the PL test layer 4 is located at the second layer, the EL test layer 5 is located at the third layer, and the IV test layer 6 is located at the top layer. To further facilitate the test operation, preferably, in this embodiment, please refer to... Figure 8 As shown, the bending test layer housing 11, PL test housing 41, EL test housing 51 and IV test housing 61 are configured in the shape of drawers. The outer sides of the bending test layer housing 41, PL test housing 51 and EL test housing 61 are each provided with a handle 7 for easy push and pull operation.
[0051] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A bending test device for flexible photovoltaic modules, characterized in that, The test includes a bending test layer, which comprises a bending test layer housing, a first clamping plate, a second clamping plate, and a bending shaft respectively mounted on the bending test layer housing; wherein, The installation height of the second clamping plate is less than the installation height of the first clamping plate but greater than the installation height of the bending shaft. The first clamp is used for fixed installation and connection of the left end of the flexible photovoltaic module under test; The second clamp is used for fixed installation and connection of the right end of the flexible photovoltaic module under test; The bending shaft is used to bend and wrap the flexible photovoltaic module under test. The first clamp and / or the second clamp can be displaced relative to each other on the bending test layer housing. By the left and right displacement of the first clamp and / or the second clamp on the bending test layer housing, a bending test is performed on the component length region located between the left end and the right end of the flexible photovoltaic module under test with a fixed shaft bending degree.
2. The bending test device for flexible photovoltaic modules according to claim 1, characterized in that, The bending shaft is detachably mounted on the bending test layer housing; wherein the outer diameter of the bending shaft is set according to the expected bending degree test requirements, so as to facilitate the replacement of the bending shaft with the required corresponding outer diameter.
3. The bending test device for flexible photovoltaic modules according to claim 1, characterized in that, The first and second clamps are respectively provided with a number of mounting holes, which are used to fasten and connect with the corresponding ends of the flexible photovoltaic module under test.
4. The bending test device for flexible photovoltaic modules according to claim 1, characterized in that, The first clamping plate, the second clamping plate, and the bending shaft are all parallel and correspond to the width direction of the flexible photovoltaic module under test, respectively; the left and right displacement directions correspond to the length direction of the flexible photovoltaic module under test.
5. The bending test device for flexible photovoltaic modules according to claim 1, characterized in that, The first clamping plate achieves relative left and right displacement on the bending test layer housing through the first clamping plate driving unit; wherein, the first clamping plate driving unit includes a first clamping plate motor installed on the bending test layer housing, and a first clamping plate screw connected to the first clamping plate motor; at least one end of the first clamping plate is connected to the first clamping plate screw, and both ends of the first clamping plate are respectively slidably installed on the first clamping plate slide rail.
6. The bending test apparatus for flexible photovoltaic modules according to claim 1 or 5, characterized in that, The second clamping plate achieves relative left and right displacement on the bending test layer housing through the second clamping plate driving unit; wherein, the second clamping plate driving unit includes a second clamping plate motor mounted on the bending test layer housing, a second clamping plate lead screw drivenly connected to the second clamping plate motor, and a clamping cylinder drivenly connected to the second clamping plate lead screw; at least one end of the second clamping plate is fixedly connected to the clamping cylinder, and the clamping cylinder is slidably mounted on the second clamping plate slide rail.
7. The bending test apparatus for flexible photovoltaic modules according to claim 6, characterized in that, Lifting cylinders are provided on the front and rear sides of the bending test layer housing located outside the bending shaft. When the second clamping plate moves to the position of the lifting cylinder, the clamping cylinder releases the second clamping plate to ensure that the second clamping plate is disengaged from the second clamping plate slide rail. The lifting cylinder drives the second clamping plate upward until it is flush with the first clamping plate, so that the flexible photovoltaic module under test is flattened.
8. The bending test apparatus for flexible photovoltaic modules according to claim 7, characterized in that, It includes one or more stacked functional test layers located above the bending test layer; wherein each functional test layer is in communication with the bending test layer, and includes a functional test housing and a functional test module fixedly or relatively displaceable and mounted on the functional test housing.
9. The bending test apparatus for flexible photovoltaic modules according to claim 8, characterized in that, The functional test layer is either an EL test layer, a PL test layer, or an IV test layer.
10. The bending test apparatus for flexible photovoltaic modules according to claim 9, characterized in that, The EL test layer includes an EL test housing and an EL test module that can be displaced to the left or right or forward or backward on the EL test housing; the EL test module includes an EL test beam for mounting an EL camera and an EL drive module, and the EL test beam is connected to the EL drive module in a transmission manner; The PL test layer includes a PL test housing and a PL test module that can be displaced to the left and right or back and forth on the PL test housing; the PL test module includes a PL test beam for mounting a PL camera and a PL drive module, and the PL test beam is connected to the PL drive module in a transmission manner. The IV test layer includes an IV test housing and a xenon lamp fixedly mounted on the IV test housing; When the IV test layer exists simultaneously with the EL test layer or the PL test layer, the IV test layer is located on the top layer.
Citation Information
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