Photovoltaic module shearing test device and system

Abstract

The utility model relates to a photovoltaic module shearing test device and system, and the device comprises a workbench which is used for the placement of a photovoltaic module; the shearing vehicle is used for moving on a to-be-detected surface of the photovoltaic module; a traction member; the power part is connected with the shearing vehicle through the traction piece and is used for driving the shearing vehicle to move; and the position adjusting part is arranged on the workbench, is connected with the power part, and is used for adjusting the position of the power part according to the testing direction of the shearing vehicle. The photovoltaic module shearing test device meets I EC61730 and UL1703 test standards, can more quickly and conveniently confirm whether the photovoltaic module shearing test meets the test requirements or not, improves the laboratory test efficiency, then monitors the reliability of the operation performance of the photovoltaic module according to the shearing test experiment result, and improves the reliability of the photovoltaic module shearing test. Therefore, the situation of performance failure of the photovoltaic module and the risk of customer complaint are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic module reliability test, in particular to a photovoltaic module shear test device and system. BACKGROUND

[0002] Solar cell is a device that converts solar radiation into electricity through photoelectric conversion principle, and its main component silicon is the most abundant element on earth, and solar energy is inexhaustible, so solar cell is a green new energy with broad development prospects.

[0003] A plurality of solar cell pieces need to be made into photovoltaic modules through a series of welding and packaging processes to effectively generate electricity. Photovoltaic modules as products need to go through a series of tests before entering the market to prove the reliability of the products or obtain relevant certifications. Reliability testing is divided into performance testing, environmental testing, mechanical testing, and safety testing, and the main test standards include: IEC 61215, IEC 61730, IEC 62804, IEC 60891, IEC 60904, UL1703, etc. Shear testing is an important part of photovoltaic module reliability testing, and IEC 61730 and UL1703 standards stipulate that the photovoltaic module is placed horizontally, the test surface faces up, the shear test trolley is placed on the surface for 1 minute, and then pulled out at a speed of 150mm / s±30mm / s, and the process is repeated 5 times in different directions. The traditional method is to draw a 1-meter-long line segment for testing, and a manual stopwatch is used to calculate the test speed, and if the speed is not within the range, the test needs to be repeated. The test process needs to manually rotate the module direction each time, which is time-consuming and labor-intensive.

[0004] Therefore, it is necessary to develop a fast, efficient and convenient photovoltaic module shear test device to realize the difficulty in the shear test process of photovoltaic modules. Invention content

[0005] Therefore, a photovoltaic module shear test device and system are provided, which can ensure the convenience of shear test, save test time, reduce labor intensity, and improve the efficiency and accuracy of laboratory shear test.

[0006] To solve the above problems, a photovoltaic module shear test device is provided, which comprises: a workbench for placing a photovoltaic module; a shear car for moving on the test surface of the photovoltaic module; a traction member; a power unit connected with the shear car through the traction member for driving the shear car to move; and a position adjusting unit arranged on the workbench and connected with the power unit for adjusting the position of the power unit according to the test direction of the shear car.

[0007] Optionally, the position adjusting part comprises a rotating assembly arranged on the workbench and a telescopic assembly arranged on the rotating assembly and used for connecting the power part; the rotating assembly is capable of rotating around its own axis to adjust the angle of the telescopic assembly on the workbench according to the test direction of the shear machine; the telescopic assembly is capable of telescopic arrangement to adjust according to the position of the shear machine.

[0008] Optionally, the rotating assembly comprises a supporting column, a rotating sleeve and a positioning member; the fixed end of the supporting column is arranged on the workbench; the rotating sleeve is sleeved on the free end of the supporting column and is capable of self-rotation arrangement relative to the supporting column; the positioning member is used for positioning the rotating sleeve; the telescopic assembly is arranged on the rotating sleeve.

[0009] Optionally, the free end of the supporting column is coaxially provided with a positioning disc; the outer circumferential surface of the positioning disc is provided with a ring of positioning holes; the rotating sleeve is sleeved on the outer circumferential surface of the positioning disc and is provided with a through hole; the positioning member is horizontally arranged in the through hole and positioned in the positioning holes.

[0010] Optionally, the telescopic assembly comprises a first telescopic rod, a tail telescopic rod and a plurality of intermediate telescopic rods hingedly arranged between the first telescopic rod and the tail telescopic rod; the first telescopic rod is connected to the rotating sleeve; the tail telescopic rod is connected to the power part.

[0011] Optionally, the intermediate telescopic rods and the first telescopic rod, the intermediate telescopic rods and the tail telescopic rod and the adjacent two intermediate telescopic rods are hingedly connected through a hinge member, and the hinge member is fastened through a fixing member.

[0012] Optionally, the power part comprises a motor arranged on the position adjusting part, and an output shaft of the motor is coaxially provided with an output wheel; one end of the traction member is connected to the shear machine, and the other end is wound around the output wheel.

[0013] Optionally, the motor is a speed-regulating motor, which is used for adjusting the actual moving speed of the shear machine to the target speed by adjusting the rotating speed.

[0014] Optionally, the shear machine is provided with a pull ring, and the traction member is connected to the pull ring; and / or, the pull ring and the shear machine are in an integral structure or are detachably connected.

[0015] The application also provides a shear test system for a photovoltaic module, comprising: a photovoltaic module; and the shear test device for the photovoltaic module.

[0016] Beneficial effects:

[0017] The above-mentioned photovoltaic module shear test device and system can realize the adjustment of the position of the power part through the use of the position adjustment part when changing the test direction of the shear car, so that the power part can be used with the shear car and the tension direction can be freely changed, thereby quickly completing the photovoltaic laboratory shear test project, conveniently and quickly performing shear test on the photovoltaic module, improving the test efficiency, saving the test time, avoiding the carrying and rotating of the module, and the test device has a certain adjustability and can adapt to modules of different sizes, which is conducive to the laboratory to more conveniently and quickly complete the shear test of modules of various sizes and reduce the risk of test failure of the module in the production and use process. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 FIG. 1 is a structural schematic diagram of a photovoltaic module shear test device in an embodiment;

[0019] Figure 2 FIG. 2 is a structural schematic diagram of a rotating assembly in an embodiment;

[0020] Figure 3 FIG. 3 is an assembly schematic diagram of a support column and a positioning disc in an embodiment;

[0021] Figure 4 FIG. 4 is a structural schematic diagram of a telescopic assembly in an embodiment.

[0022] FIG. 1 is a structural schematic diagram of a photovoltaic module shear test device in an embodiment; FIG. 2 is a structural schematic diagram of a rotating assembly in an embodiment; FIG. 3 is an assembly schematic diagram of a support column and a positioning disc in an embodiment; FIG. 4 is a structural schematic diagram of a telescopic assembly in an embodiment; and FIG. 5 is a structural schematic diagram of a shear car in an embodiment. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0024] It should be noted that the diagrams provided in the embodiments only schematically illustrate the basic concept of the present application, and only the components related to the present application are shown in the diagrams, not the number, shape and size of the components when actually implemented. The actual implementation of each component may be randomly changed in shape, number and proportion, and the layout pattern of the components may also be more complex.

[0025] The structures, proportions, sizes, etc. shown in the drawings of the specification are merely used to cooperate with the disclosed content, to be understood and read by those skilled in the art, and are not used to limit the defined conditions that can be implemented by the present application, and therefore do not have technical significance. Any modification of the structure, change of the proportion relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the disclosed technical content.

[0026] The orientations or positional relationships indicated by terms such as "upper", "lower", "left", "right", "intermediate", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the drawings, and are merely used for convenience of description and are not indicative or suggestive of the device or element being directed in a particular orientation, constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] The embodiments of the present application provide a photovoltaic module shear test device and system, which can make up for the defects and deficiencies of existing test equipment, ensure the convenience of shear test, save test time, reduce labor intensity, and improve the efficiency and accuracy of laboratory shear test.

[0028] The embodiments of the present application provide a photovoltaic module shear test device, which will be described in detail below with reference to the accompanying drawings. Figure 1 As shown in the drawings, it comprises a workbench 1, a shear vehicle 3, a traction member 4, a power part 5, and a position adjusting part 6. The workbench 1 is mainly used for placing the photovoltaic module 2. The shear vehicle 3 is used for moving on the surface to be tested of the photovoltaic module 2. The traction member 4 connects the shear vehicle 3 and the power part 5. The power part 5 moves the shear vehicle 3 through the traction member 4. The position adjusting part 6 is arranged on the workbench 1 and connected with the power part 5, which is used for adjusting the position of the power part 5 according to the test direction of the shear vehicle 3.

[0029] In the embodiments, the photovoltaic module 2 is placed on the workbench 1 during testing. The shear vehicle 3 is placed on the surface to be tested of the photovoltaic module 2. The shear vehicle 3 and the power part 5 are connected through the traction member 4. Then the power part 5 pulls the shear vehicle 3 on the surface to be tested of the photovoltaic module 2 through the traction member 4, thereby completing the shear test. When the test direction of the shear vehicle 3 is changed, the position of the power part 5 can be adjusted through the use of the position adjusting part 6, so that the power part 5 can be used with the shear vehicle 3, the pulling direction can be freely changed, and then the photovoltaic laboratory shear test project can be quickly completed. The photovoltaic module 2 can be conveniently and quickly tested, the test efficiency is improved, the test time is saved, the rotating component is avoided to be carried, the labor intensity is reduced, and the efficiency and accuracy of laboratory shear test are improved.

[0030] In the embodiment, it is to be noted that the bottom of the workbench 1 is provided with several supporting legs for supporting, so that the height of the workbench 1 meets the normal use, and the workbench 1 can be customized according to the size of the photovoltaic module 2, such as 2.5m*1.2m*0.7m, and the height is preferably 65-75cm, and the material can be wood, iron or plastic, and the bearing capacity is more than 100kg, and the material and height of the workbench 1 can be selected according to the actual situation.

[0031] Please refer to Figures 1-3 In the embodiment, it is to be noted that the position adjusting part 6 includes a rotating assembly 61 and a telescopic assembly 62, the rotating assembly 61 is arranged on the workbench 1, and the telescopic assembly 62 is arranged on the rotating assembly 61 and is used for connecting the power part 5. The rotating assembly 61 can rotate 360 degrees around its own axis, so as to adjust the angle of the telescopic assembly 62 on the workbench 1 according to the test direction of the shear machine 3; the telescopic assembly 62 can be telescopically arranged, and the telescopic assembly 62 can be telescopically adjusted according to the position of the shear machine 3 on the working area of the workbench 1 as needed, and the moving area can cover the entire surface of the workbench 1. Therefore, through the cooperation of the rotating assembly 61 and the telescopic assembly 62, the entire surface of the workbench 1 can be basically covered, the angle of the telescopic assembly 62 on the workbench 1 is adjusted through the rotating assembly 61 according to the test direction of the shear machine 3, then the position of the shear machine 3 is adjusted through the telescopic assembly 62, and it is ensured that the traction part 4 and the moving direction of the shear machine 3 are in the same straight line during the test.

[0032] Please continue to refer to Figures 1-3 In some embodiments, the rotating assembly 61 includes a supporting column 611, a rotating sleeve 612 and a positioning part 613, the supporting column 611 is vertically arranged, and the lower end is a fixed end and the upper end is a free end, the fixed end of the supporting column 611 is arranged at one corner position of the workbench 1, the rotating sleeve 612 is matched with the free end of the supporting column 611, the rotating sleeve 612 is sleeved on the free end of the supporting column 611 and can rotate 360 degrees relative to the supporting column 611, the positioning part 613 is used for positioning the rotating sleeve 612 to fix the angle of the rotating sleeve 612, and the telescopic assembly 62 is arranged on the rotating sleeve 612. Therefore, through the rotation of the rotating sleeve 612 on the supporting column 611, the angle of the telescopic assembly 62 can be changed, and the power part 5 is arranged on the telescopic assembly 62, so that the angle of the power part 5 can be indirectly adjusted to adapt to the test direction of the shear machine 3, and the position of the power part 5 can be further adjusted through the telescopic function of the telescopic assembly 62.

[0033] In some embodiments, the positioning member 613 is a positioning pin, which can be used to position the rotating sleeve 612. When the rotating sleeve 612 is rotated to a certain position, in order to ensure the stability of the position of the rotating sleeve 612, the rotating sleeve 612 is not easy to rotate during the test. The rotating sleeve 612 is positioned on the support column 611 by using the positioning pin, so as to ensure that the position is not easy to change during the test. Preferably, the rotating sleeve 612 is made of hard metal material, which can be aluminum alloy profile.

[0034] In an implementable manner, the upper end of the support column 611 is coaxially provided with a positioning disc 614, the cross-sectional area of the positioning disc 614 is larger than that of the support column 611, the outer periphery of the positioning disc 614 is provided with a circle of positioning holes 6141, and the positioning holes 6141 are arranged at equal intervals; the rotating sleeve 612 is sleeved on the outer periphery of the positioning disc 614 and is provided with a communication hole 6121, the rotating sleeve 612 is rotatably arranged relative to the positioning disc 614, and the positioning member 613 is horizontally inserted into the communication hole 6121 and positioned in the positioning hole 6141, so as to realize the fixing operation of the rotating sleeve 612. Therefore, when the rotating sleeve 612 rotates by a certain angle and needs to be positioned, it is rotated to the position where the communication hole 6121 and the positioning hole 6141 coincide. At this time, the positioning member 613 is horizontally inserted into the communication hole 6121 and inserted into the positioning hole 6141, so that the rotating sleeve 612 can be positioned by using the positioning member 613.

[0035] Please refer to Figure 1 、 Figure 4 It is also noted in the present embodiment that the telescopic assembly 62 includes a first telescopic rod 621, a tail telescopic rod 622, and a plurality of intermediate telescopic rods 623 hingedly connected between the first telescopic rod 621 and the tail telescopic rod 622; the first telescopic rod 621 is connected to the rotating sleeve 612, and the tail telescopic rod 622 is connected to the power unit 5. The telescopic assembly 62 can be telescoped in the working area of the workbench 1 as needed, and the moving area can cover the entire tabletop, so that the power unit 5 can be adjusted in position on the workbench 1.

[0036] In some embodiments, the intermediate telescopic rods 623, the first telescopic rod 621, the tail telescopic rod 622, and the adjacent two intermediate telescopic rods 623 are hingedly connected by hinge members 624, such as hinge shafts. The end of the hinge shaft has a thread. When the telescopic assembly 62 is telescoped to a suitable position, the first telescopic rod 621, the tail telescopic rod 622, and the adjacent two intermediate telescopic rods 623 are respectively fastened by using a fixing member, which can be a nut, and the nut is threadedly connected to the end of the hinge shaft, so as to complete the telescoping.

[0037] Please continue to refer to Figure 1 、 Figure 4 In the embodiment, it is also necessary to point out that the power part 5 comprises a motor 51 and an output wheel 52, the motor 51 is arranged on the tail section telescopic rod 622 of the telescopic assembly 62, the output shaft of the motor 51 is arranged vertically downward, the output shaft of the motor 51 is coaxially arranged with the output wheel 52, one end of the traction member 4 is connected with the shearing vehicle 3, the other end is wound on the output wheel 52, and during the test, the advancing direction of the traction member 4 and the shearing vehicle 3 is kept in the same straight line. Thus, the rotation of the output wheel 52 can be controlled by the use of the motor 51, and the traction member 4 can be wound during the rotation of the output wheel 52, thereby pulling the shearing vehicle 3 to move on the surface to be tested of the photovoltaic module 2.

[0038] In some embodiments, the motor 51 can be a speed-regulating motor or a servo motor or a stepping motor, etc., can be a low-voltage motor (12V, 24V, 48V, etc.) or other suitable motor, the power is within 100W, and the 10N weight standard vehicle can be easily pulled to move, the motor 51 is provided with a control system or a speed-regulating control; the test speed of the shearing vehicle 3 can be adjusted by the use of the speed-regulating motor, thereby completing the shearing test of the photovoltaic module 2. Preferably, the speed-regulating motor is controlled by a speed controller 53, the speed controller 53 is connected with the speed-regulating motor, and is used for adjusting the actual moving speed of the shearing vehicle 3 to the target speed by adjusting the rotating speed of the speed-regulating motor. The rotating speed of the above-mentioned speed-regulating motor can be controlled by the use of the speed controller 53, and the principle of the speed controller 53 controlling the rotating speed of the speed-regulating motor is a mature technology in the art, which will not be described in detail here.

[0039] Please refer to Figure 1 In the embodiment, it is also necessary to point out that the shearing vehicle 3 is the test main body, the shearing vehicle 3 is a standard trolley consistent with the standard diagram of IEC61730 or UL1703, and is provided with a weight, the weight can change the weight of the shearing vehicle 3, thereby the test can be carried out according to the shearing vehicle 3 with different weights. Preferably, the shearing vehicle 3 is made of aluminum alloy, and the overall weight is relatively light, which is convenient to use.

[0040] In some embodiments, the shearing vehicle 3 is provided with a pull ring 7, one end of the traction member 4 is connected with the pull ring 7, and the other end is connected with the output wheel 52 of the motor 51, so that the connection of the traction member 4 and the shearing vehicle 3 is facilitated by the use of the pull ring 7. Preferably, the pull ring 7 and the shearing vehicle 3 are an integral structure or can be detachably connected, such as being fastened by bolts to realize reliable connection.

[0041] Please refer to Figure 1As shown, in the embodiment, it is also necessary to point out that the traction member 4 can be provided as a traction rope, the material of the traction rope is light cotton or nylon, etc., the traction rope can be reliably connected with the pull ring 7 and the output wheel 52, can be tightened along with the rotation of the output wheel 52, the pulling force can be above 50N, and the diameter is not more than 2mm.

[0042] The application also provides a shearing test system of a photovoltaic module, comprising the photovoltaic module 2 and the shearing test device of the photovoltaic module.

[0043] The implementation principle of the embodiment is as follows:

[0044] Step one: horizontally place the photovoltaic module 2 on the workbench 1, and place the to-be-tested surface upward;

[0045] Step two: horizontally place the shearing vehicle 3 on the to-be-tested surface of the photovoltaic module 2, and select the test direction of the shearing vehicle 3;

[0046] Step three: adjust the rotating assembly 61 and the telescopic assembly 62, so that the traction member 4 of the output wheel 52 of the motor 51 is on the same straight line as the advancing direction of the shearing vehicle 3, then reliably fix the traction member 4 to the pull ring 7, and the traction member 4 between the output wheel 52 and the pull ring 7 is kept in a straightened and tightened state without loosening;

[0047] Step four: adjust the speed controller 53, adjust the speed of the motor 51 to the pulling speed required by IEC61730 or UL1703, start the device, and repeat the above operation 4 times from the unused direction as required, and then complete the subsequent test.

[0048] The shearing test device of the photovoltaic module in the embodiment can quickly and accurately measure the shearing test of the photovoltaic module, the speed of the motor can be adjusted through the speed controller, and then the test speed is set, so that the test speed meets the IEC61730-2 and UL1703 test standards, the pulling direction can be freely changed through the cooperation of the rotating assembly and the telescopic assembly, the shearing test project of the photovoltaic laboratory is quickly completed, the shearing test of the photovoltaic module is conveniently and quickly performed, the test efficiency is improved, the test time is saved, the rotating assembly is avoided to be carried, the test device has a certain adjustability, can adapt to photovoltaic modules of different sizes, is beneficial to the laboratory to quickly and conveniently complete the shearing test of photovoltaic modules of various sizes, and reduces the risk of test failure of the photovoltaic module in the production and use process.

[0049] The technical features of the above embodiments can be combined in any manner, and in order to make the description concise, not all possible combinations of the technical features in the above embodiments are described, however, as long as the combinations of the technical features do not exist contradictory, it should be considered that it is within the scope of the present application.

[0050] The above embodiments only express several implementation ways of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation to the patent scope of the application. It should be pointed out that for ordinary skilled persons in the art, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A photovoltaic module shear test apparatus, characterized by, The utility model relates to a photovoltaic module shear test device, which comprises the following parts: a workbench (1) for placing a photovoltaic module (2); a shear vehicle (3) for moving on the surface of the photovoltaic module (2) to be tested; a traction member (4); a power unit (5) connected with the shear vehicle (3) through the traction member (4) for driving the shear vehicle (3) to move; a position adjusting unit (6) arranged on the workbench (1) and connected with the power unit (5) for adjusting the position of the power unit (5) according to the test direction of the shear vehicle (3).

2. The photovoltaic module shear test device according to claim 1, wherein the position adjusting unit (6) comprises a rotating assembly (61) arranged on the workbench (1) and a telescopic assembly (62) arranged on the rotating assembly (61) and connected with the power unit (5); the rotating assembly (61) is capable of rotating around its own axis to adjust the angle of the telescopic assembly (62) on the workbench (1) according to the test direction of the shear vehicle (3); the telescopic assembly (62) is capable of telescopic adjustment according to the position of the shear vehicle (3).

3. The photovoltaic module shear test device according to claim 2, wherein the rotating assembly (61) comprises a support column (611), a rotating sleeve (612) and a positioning member (613); the fixed end of the support column (611) is mounted on the workbench (1); the rotating sleeve (612) is sleeved on the free end of the support column (611) and is capable of rotating relative to the support column (611); the positioning member (613) is used for positioning the rotating sleeve (612); the telescopic assembly (62) is mounted on the rotating sleeve (612).

4. The photovoltaic module shear test device according to claim 3, wherein the free end of the support column (611) is coaxially provided with a positioning disc (614); the outer circumferential surface of the positioning disc (614) is provided with a ring of positioning holes (6141); the rotating sleeve (612) is sleeved on the outer circumferential surface of the positioning disc (614) and is provided with a through hole (6121); the positioning member (613) is positioned in the positioning holes (6141) after being horizontally arranged in the through hole (6121).

5. The photovoltaic module shear test device according to claim 3, wherein the telescopic assembly (62) comprises a first telescopic rod (621), a second telescopic rod (622) and a plurality of intermediate telescopic rods (623) hingedly arranged between the first telescopic rod (621) and the second telescopic rod (622); the first telescopic rod (621) is connected with the rotating sleeve (612); the second telescopic rod (622) is connected with the power unit (5).

6. The photovoltaic module shear test device according to claim 5, wherein ​ ​ ​ ​ The intermediate section telescopic rod (623) and the first section telescopic rod (621), the intermediate section telescopic rod (623) and the tail section telescopic rod (622), and two adjacent intermediate section telescopic rods (623) are hingedly connected by a hinge (624), and the hinge (624) is fastened by a fixing member. 7.The photovoltaic module shear testing device according to any one of claims 1-6, characterized in that, The power unit (5) comprises a motor (51) arranged on the position adjusting unit (6), and an output shaft of the motor (51) is coaxially provided with an output wheel (52). One end of the traction member (4) is connected to the shear vehicle (3), and the other end is wound around the output wheel (52). 8.The photovoltaic module shear testing device according to claim 7, characterized in that, The motor (51) is a speed-regulating motor, which is used to adjust the actual moving speed of the shear vehicle (3) to the target speed by adjusting the rotating speed. 9.The photovoltaic module shear testing device according to claim 7, characterized in that, The shear vehicle (3) is provided with a pull ring (7), and the traction member (4) is connected to the pull ring (7). And / or, the pull ring (7) and the shear vehicle (3) are an integral structure or detachably connected.

10. A shear testing system for photovoltaic modules, characterized by, Comprise: a photovoltaic module (2); and a shear testing device for the photovoltaic module according to any one of claims 1 to 9.

Images