Test fixtures and test devices

Abstract

This application relates to a testing fixture and testing apparatus. The testing fixture includes a fixture body and a cable connector. The fixture body is used to fix to the front side of a photovoltaic module, and a probe contact portion is provided on the fixture body for electrical contact with the probe of a power tester. The cable connector is fixed to the fixture body, electrically connected to the probe contact portion, and electrically connected to a junction box on the back side of the photovoltaic module. The above-mentioned testing fixture and testing apparatus reduce the obstruction of the effective light-receiving surface on the back side of the photovoltaic module, thereby improving the accuracy of power testing on the back side of the photovoltaic module.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module testing technology, and in particular to testing fixtures and testing devices. Background Technology

[0002] In photovoltaic (PV) power generation systems, double-glass modules are a type of high-efficiency PV module capable of generating electricity from both sides. Double-glass modules are widely used because they can generate electricity from both sides. Before leaving the factory, PV modules typically undergo power testing. For double-glass modules, power testing is required not only on the front side but also on the back side.

[0003] Currently, conventional power testing fixtures are only suitable for testing the power of the front side of photovoltaic modules. For the back side of photovoltaic modules, long wires need to be manually used to connect the power testing instrument to the junction box on the back of the photovoltaic module to achieve back-side power testing. However, workers can easily scratch the electrodes on the back of the photovoltaic module when connecting the long wires; at the same time, during testing, the long wires can also block the effective light-receiving surface on the back of the photovoltaic module, which can lead to significant deviations in the test results. Utility Model Content

[0004] Therefore, it is necessary to provide a testing fixture and testing device to address the issue of how to improve the accuracy of power testing on the back side of photovoltaic modules.

[0005] Firstly, this application provides a testing fixture, comprising:

[0006] The fixture body is used to install onto the front side of the photovoltaic module. The fixture body is provided with a probe contact part, which is used to make electrical contact with the probe of the power tester.

[0007] A cable connector is fixed to the main body of the tooling, electrically connected to the probe contact portion, and used for electrically connecting to the junction box on the back of the photovoltaic module.

[0008] The technical solution will be further explained below:

[0009] In one embodiment, both ends of the tooling body are provided with buckles, which are used to snap and fix to the frame of the photovoltaic module.

[0010] In one embodiment, the tooling body includes a main rod, a first telescopic rod telescopically connected to one end of the main rod, and a second telescopic rod telescopically connected to the other end of the main rod. The probe contact portion is disposed on the main rod. The end of the first telescopic rod away from the main rod is connected to one of the buckles, and the end of the second telescopic rod away from the main rod is connected to the other buckle.

[0011] In one embodiment, the buckle includes a first clamping part and a second clamping part, the first clamping part being connected to the tooling body, the second clamping part being connected to the first clamping part, and the second clamping part and the first clamping part forming a slot for engaging with the frame.

[0012] In one embodiment, the buckle further includes an elastic element, through which the first clamping portion is movably connected to the second clamping portion.

[0013] In one embodiment, the probe contact portion includes a positive electrode contact portion and a negative electrode contact portion, which are disposed on the tooling body at intervals.

[0014] The cable connector includes a first cable and a second cable. The first cable is electrically connected to the positive electrode contact portion and is used to connect to the positive electrode junction box of the photovoltaic module along the middle busbar on the back of the photovoltaic module. The second cable is electrically connected to the negative electrode contact portion and is used to connect to the negative electrode junction box of the photovoltaic module along the middle busbar on the back of the photovoltaic module.

[0015] Secondly, this application provides a testing apparatus, comprising:

[0016] The aforementioned test fixtures;

[0017] A conveying mechanism is provided with a testing station, and the conveying mechanism is used to convey the photovoltaic module to the testing station;

[0018] A light source, said light source being arranged above the test station; and

[0019] A power tester, wherein the probe of the power tester is disposed at the test station, and when the photovoltaic module enters the test station, the probe makes electrical contact with the detection contact portion of the test fixture fixed on the photovoltaic module to perform power testing on the back side of the photovoltaic module.

[0020] In one embodiment, the testing apparatus further includes a lifting mechanism disposed at the testing station, the lifting mechanism being used to drive the photovoltaic module entering the testing station to rise or fall.

[0021] In one embodiment, the testing apparatus further includes a correction mechanism disposed at the testing station, the correction mechanism being used to correct the photovoltaic module entering the testing station.

[0022] In one embodiment, the alignment mechanism includes a plurality of alignment wheels, which are respectively arranged on both sides of the test station. Each alignment wheel is connected to a pusher, which drives the alignment wheel to abut against the photovoltaic module to align the photovoltaic module from opposite sides.

[0023] When the aforementioned test fixture is in operation, the main body of the fixture is first fixed to the front of the photovoltaic module. Then, the cable connector is bypassed around the frame of the photovoltaic module and connected to the junction box located on the back of the photovoltaic module. Next, the back of the photovoltaic module is illuminated by a light source, and the probe contact on the main body of the fixture is electrically connected to the probe of the power tester. At this time, the power of the back of the photovoltaic module can be tested by the power tester. Compared with the traditional test scheme that requires laying long wires on the back of the photovoltaic module to connect the junction box and the power tester, the test fixture of this application uses a cable connector fixed on the main body of the fixture to connect the junction box, and then uses the probe contact on the main body of the fixture to contact the probe of the power tester to achieve electrical connection between the junction box and the power tester. Therefore, it is not necessary to lay long wires on the back of the photovoltaic module. Furthermore, since the main body of the fixture is fixed to the front of the photovoltaic module, the shading of the effective light-receiving surface on the back of the photovoltaic module is reduced, thereby improving the accuracy of power testing on the back of the photovoltaic module.

[0024] Furthermore, since the probe contacts on the fixture body make contact with the probes of the power tester, an electrical connection between the junction box and the power tester can be achieved. This allows the probes of the probe tester to be positioned on the testing station of the conveyor mechanism, which then transports the photovoltaic module with the testing fixture mounted to the testing station. This automatic docking of the testing fixture and the power tester eliminates the need for manual wiring, avoiding the risk of electrode scratches on the photovoltaic modules caused by manual wiring and reducing the damage rate. Simultaneously, it improves testing automation, thereby increasing testing efficiency. Attached Figure Description

[0025] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying 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.

[0027] Furthermore, the accompanying drawings are not drawn to a 1:1 scale, and the relative dimensions of the various components are shown as examples only and not necessarily to scale. In the accompanying drawings:

[0028] Figure 1 This is a front view of a photovoltaic module with a test fixture installed, according to one embodiment.

[0029] Figure 2 This is a rear view of a photovoltaic module with a test fixture installed, according to one embodiment.

[0030] Figure 3 This is a schematic diagram of the buckle structure of a test fixture according to one embodiment.

[0031] Figure 4 This is a schematic diagram of the structure of a test device according to one embodiment.

[0032] Figure 5 This is a bottom view of a test apparatus according to one embodiment.

[0033] Explanation of reference numerals in the attached figures:

[0034] 10. Test fixture; 11. Fixture body; 111. Main rod; 112. First telescopic rod; 113. Second telescopic rod; 114. Probe contact part; 1141. Positive contact part; 1142. Negative contact part; 12. Cable connector; 121. First cable; 122. Second cable; 131. Buckle; 1311. First clamping part; 1312. Second clamping part; 1313. Slot; 1314. Elastic element; 20. Photovoltaic module; 21. Positive junction box; 22. Negative junction box; 23. Frame; 24. Intermediate busbar; 30. Conveying mechanism; 40. Lifting mechanism; 50. Alignment mechanism; 51. Alignment wheel; 52. Pushing element. Detailed Implementation

[0035] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0036] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0037] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0038] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0040] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0041] One embodiment of this application provides a test fixture 10 for performing power testing on the back side of a photovoltaic module 20. See also Figure 1 as well as Figure 2 , Figure 1 This is a front view of a photovoltaic module 20 with the test fixture 10 installed according to an embodiment of this application; Figure 2 This diagram illustrates the rear view of a photovoltaic module 20 with a test fixture 10 installed according to an embodiment of this application. Specifically, the test fixture 10 in one embodiment includes a fixture body 11 and a cable connector 12. Wherein:

[0042] The fixture body 11 is used to install onto the front side of the photovoltaic module 20. The fixture body 11 is provided with a probe contact part 114, which is used to make electrical contact with the probe (not shown) of the power tester.

[0043] The cable connector 12 is fixed on the fixture body 11. The cable connector 12 is electrically connected to the probe contact part 114, and the cable connector 12 is used to electrically connect to the junction box on the back of the photovoltaic module 20.

[0044] When the aforementioned test fixture 10 is in operation, the fixture body 11 is first fixed to the front of the photovoltaic module 20. Then, the cable connector 12 is routed around the frame 23 of the photovoltaic module 20 and connected to the junction box located on the back of the photovoltaic module 20. Next, a light source is used to illuminate the back of the photovoltaic module 20, and the probe contact 114 on the fixture body 11 is electrically connected to the probe of the power tester. At this point, the power on the back of the photovoltaic module 20 can be tested by the power tester. Compared to the traditional method that requires laying long wires on the back of the photovoltaic module 20 to connect the junction box and the power tester, this method is more efficient. The test fixture 10 of this application uses a cable connector fixed on the fixture body 11 to connect the junction box, and then uses the probe contact part 114 fixed on the fixture body 11 to contact the probe of the power tester to realize the electrical connection between the junction box and the power tester. This eliminates the need to lay long wires on the back of the photovoltaic module 20. Furthermore, since the fixture body 11 is fixed on the front of the photovoltaic module 20, the shading of the effective light-receiving surface on the back of the photovoltaic module 20 is reduced, thereby improving the accuracy of power testing on the back of the photovoltaic module 20.

[0045] Furthermore, since the probe contact portion 114 on the fixture body 11 contacts the probe of the power tester, an electrical connection between the junction box and the power tester can be achieved. This allows the probe of the probe tester to be positioned on the test station of the conveying mechanism 30. The photovoltaic module 20, equipped with the test fixture 10, is then transported to the test station via the conveying mechanism 30, enabling automatic docking between the test fixture 10 and the power tester. This eliminates the need for manual wiring, avoiding the risk of electrode scratches on the photovoltaic module 20 caused by manual wiring and reducing the damage rate of the photovoltaic module 20. Simultaneously, it improves testing automation, thereby increasing testing efficiency.

[0046] See Figure 1 In one embodiment, both ends of the fixture body 11 are provided with buckles 131, which are used to snap and fix to the frame 23 of the photovoltaic module 20. Exemplarily, the buckle 131 at one end of the fixture body 11 is fixed to one long frame of the photovoltaic module 20, and the buckle 131 at the other end of the fixture body 11 is fixed to the other long frame of the photovoltaic module 20, thereby fixing the fixture body 11 to the front of the photovoltaic module 20.

[0047] See Figure 1 In some embodiments, the fixture body 11 includes a main rod 111, a first telescopic rod 112 telescopically connected to one end of the main rod 111, and a second telescopic rod 113 telescopically connected to the other end of the main rod 111. A probe contact part 114 is disposed on the main rod 111. The end of the first telescopic rod 112 away from the main rod 111 is connected to one of the clips 131, and the end of the second telescopic rod 113 away from the main rod 111 is connected to the other clip 131. In this way, the distance between the two clips 131 can be flexibly adjusted according to the size of the photovoltaic module 20 to be tested, so that the testing fixture 10 can be adapted to photovoltaic modules 20 of different widths.

[0048] For example, a first telescopic rod 112 is movably inserted through one end of the main rod 111, and a first spring connects the first telescopic rod 112 to the main rod 111, thereby enabling the first telescopic rod 112 to extend and retract relative to the main rod 111. Similarly, a second telescopic rod 113 is movably inserted through the other end of the main rod 111, and a second spring connects the second telescopic rod 113 to the main rod 111, thereby enabling the second telescopic rod 113 to extend and retract relative to the main rod 111.

[0049] See Figure 3The buckle 131 includes a first clamping part 1311 and a second clamping part 1312. The first clamping part 1311 is connected to the tooling body 11, and the second clamping part 1312 is connected to the first clamping part 1311. The second clamping part 1312 and the first clamping part 1311 form a slot 1313 for snapping onto the frame 23. For example, both the first clamping part 1311 and the second clamping part 1312 are L-shaped. By using the slot 1313 to clamp the first clamping part 1311 and the second clamping part 1312 onto the opposite sides of the frame 23, the buckle 131 can be snapped and fixed onto the frame 23, thereby fixing the tooling body 11 to the front of the photovoltaic module 20.

[0050] See also Figure 3 The buckle 131 also includes an elastic element 1314, through which the first clamping part 1311 is movably connected to the second clamping part 1312. Thus, the distance between the first clamping part 1311 and the second clamping part 1312 can be flexibly adjusted according to the thickness of the frame 23, thereby adjusting the width of the slot 1313, allowing the buckle 131 to adapt to photovoltaic modules 20 of different thicknesses. Simultaneously, the elasticity of the elastic element 1314 can also improve the clamping force between the first clamping part 1311 and the second clamping part 1312, thereby enhancing the connection stability between the fixture body 11 and the photovoltaic module 20.

[0051] For example, in other embodiments, the tooling body 11 may also be fixed to the front of the photovoltaic module 20 by means of suction cup adsorption or magnetic attraction, and there is no limitation here.

[0052] See Figure 1 as well as Figure 2 In some embodiments, the probe contact portion 114 includes a positive contact portion 1141 and a negative contact portion 1142, which are disposed on the tooling body 11 at intervals. Specifically, the positive contact portion 1141 is used to contact the positive probe of the power tester, and the negative contact portion 1142 is used to contact the negative probe of the power tester.

[0053] Furthermore, the cable connector 12 includes a first cable 121 and a second cable 122. The first cable 121 is electrically connected to the positive contact portion 1141 and is used to connect to the positive terminal box 21 of the photovoltaic module 20 along the middle busbar 24 on the back of the photovoltaic module 20. The second cable 122 is electrically connected to the negative contact portion 1142 and is used to connect to the negative terminal box 22 of the photovoltaic module 20 along the middle busbar 24 on the back of the photovoltaic module 20.

[0054] In this way, the positive terminal junction box 21 can be electrically connected to the positive probe of the power tester, and the negative terminal junction box 22 can be electrically connected to the negative probe. Furthermore, since both the first cable 121 and the second cable 122 extend along the intermediate busbar 24, they will not block the effective light-receiving surface on the back of the photovoltaic module 20.

[0055] See Figure 4 as well as Figure 5 This application also provides a testing apparatus in another aspect. One embodiment of the testing apparatus includes a conveying mechanism 30, a light source (not shown), a power tester (not shown), and a testing fixture 10 from any of the above embodiments. Wherein:

[0056] The test fixture 10 is used to install onto the photovoltaic module 20 to be tested.

[0057] The conveying mechanism 30 is provided with a testing station, which is used to transport the photovoltaic module 20 to the testing station. Exemplarily, the conveying mechanism 30 can be a conveyor belt or a conveyor roller mechanism, and there is no limitation thereto.

[0058] A light source is positioned above the test station to provide light to the photovoltaic module 20 entering the test station, thereby causing the photovoltaic module 20 to generate current. For example, the light source can be a xenon lamp.

[0059] The probe of the power tester is set at the test station, and when the photovoltaic module 20 enters the test station, the probe makes electrical contact with the detection contact part of the test fixture 10 fixed on the photovoltaic module 20 to perform power testing on the back side of the photovoltaic module 20.

[0060] Specifically, when using the above-mentioned testing device, the main body 11 of the testing fixture 10 is first fixed to the front of the photovoltaic module 20, and then the cable connector 12 is bypassed around the frame 23 of the photovoltaic module 20 and connected to the junction box located on the back of the photovoltaic module 20. Then, the photovoltaic module 20 is conveyed to the test station with its back side facing up by the conveying mechanism 30. After the photovoltaic module 20 enters the test station, the light source illuminates the back side of the photovoltaic module 20, and at this time, the probe contact part 114 of the test fixture 10 contacts the probe of the power tester. At this time, the power of the back side of the photovoltaic module 20 can be tested by the power tester. Compared with the traditional test scheme that requires laying long wires on the back side of the photovoltaic module 20 to connect the junction box and the power tester, the test fixture 10 of this application uses a cable connector fixed on the fixture body 11 to connect the junction box, and then uses the probe contact part 114 fixed on the fixture body 11 to contact the probe of the power tester to realize the electrical connection between the junction box and the power tester. Therefore, it is not necessary to lay long wires on the back side of the photovoltaic module 20. In addition, since the fixture body 11 is fixed on the front side of the photovoltaic module 20, the shading of the effective light-receiving surface on the back side of the photovoltaic module 20 is reduced, thereby improving the accuracy of the power test on the back side of the photovoltaic module 20.

[0061] Furthermore, since the probe contact portion 114 on the fixture body 11 contacts the probe of the power tester, an electrical connection between the junction box and the power tester can be achieved. The probe of the power tester is positioned at the test station of the conveying mechanism 30, allowing the photovoltaic module 20 equipped with the test fixture 10 to be automatically connected to the power tester via the conveying mechanism 30. This eliminates the need for manual wiring, avoiding the risk of electrode scratches on the photovoltaic module 20 caused by manual wiring and reducing the damage rate of the photovoltaic module 20. Simultaneously, it improves testing automation, thereby increasing testing efficiency.

[0062] See Figure 5 In one embodiment, the testing device further includes a lifting mechanism 40, which is disposed at the testing station and is used to drive the photovoltaic module 20 entering the testing station to rise or fall.

[0063] Specifically, in the traditional solution, due to the thickness of the frame 23, when the conveying mechanism 30 transports the photovoltaic module 20 face up to the test station for testing, the distance from the front of the photovoltaic module 20 to the light source is different from the distance from the back of the photovoltaic module 20 to the light source. This results in a deviation between the test results for the front of the photovoltaic module 20 and the test results for the back of the photovoltaic module 20.

[0064] The testing apparatus of one embodiment of this application lifts the photovoltaic module 20 using a lifting mechanism 40. When testing the back of the photovoltaic module 20, the distance from the back of the photovoltaic module 20 to the light source is equal to the distance from the front of the photovoltaic module 20 to the light source when testing the front of the photovoltaic module 20. This ensures the consistency of the testing conditions and thus ensures the accuracy of the test results.

[0065] For example, the lifting mechanism 40 may include a plurality of spaced-apart electric telescopic rods or lifting cylinders, etc., without limitation.

[0066] See Figure 4 In one embodiment, the testing device further includes a correction mechanism 50, which is disposed at the testing station. The correction mechanism 50 is used to correct the photovoltaic module 20 entering the testing station, thereby ensuring that the probe contact part 114 of the testing fixture 10 makes accurate contact with the probe of the power tester.

[0067] Specifically, in one embodiment, the alignment mechanism 50 includes a plurality of alignment wheels 51, which are respectively arranged on both sides of the test station, for example, two alignment wheels 51 are provided on each side of the test station. Each alignment wheel 51 is connected to a pusher 52, which is used to drive the alignment wheel 51 to abut against the photovoltaic module 20, so as to align the photovoltaic module 20 from opposite sides.

[0068] Specifically, after the conveying mechanism 30 conveys the photovoltaic module 20 to the test station, the pusher 52 drives the alignment wheel 51 to move towards the photovoltaic module 20, so that the alignment wheel 51 limits the relative sides of the photovoltaic module 20, thereby achieving the alignment of the photovoltaic module 20.

[0069] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0070] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A testing fixture (10), characterized in that, include: The fixture body (11) is used to install onto the front side of the photovoltaic module (20). The fixture body (11) is provided with a probe contact part (114) for electrical contact with the probe of the power tester. Cable connector (12) is fixed on the tooling body (11), the cable connector (12) is electrically connected to the probe contact (114), and the cable connector (12) is used to electrically connect to the junction box on the back of the photovoltaic module (20).

2. The test fixture (10) according to claim 1, characterized in that, Both ends of the tooling body (11) are provided with buckles (131), which are used to snap and fix to the frame (23) of the photovoltaic module (20).

3. The test fixture (10) according to claim 2, characterized in that, The tooling body (11) includes a main rod (111), a first telescopic rod (112) telescopically connected to one end of the main rod (111), and a second telescopic rod (113) telescopically connected to the other end of the main rod (111). The probe contact part (114) is disposed on the main rod (111). The end of the first telescopic rod (112) away from the main rod (111) is connected to one of the buckles (131), and the end of the second telescopic rod (113) away from the main rod (111) is connected to the other buckle (131).

4. The test fixture (10) according to claim 2, characterized in that, The buckle (131) includes a first clamping part (1311) and a second clamping part (1312). The first clamping part (1311) is connected to the tooling body (11), and the second clamping part (1312) is connected to the first clamping part (1311). The second clamping part (1312) and the first clamping part (1311) are surrounded to form a slot (1313) for snapping onto the frame (23).

5. The test fixture (10) according to claim 4, characterized in that, The buckle (131) also includes an elastic element (1314), and the first clamping part (1311) is movably connected to the second clamping part (1312) through the elastic element (1314).

6. The test fixture (10) according to any one of claims 1-5, characterized in that, The probe contact portion (114) includes a positive electrode contact portion (1141) and a negative electrode contact portion (1142), and the positive electrode contact portion (1141) and the negative electrode contact portion (1142) are disposed on the tooling body (11) at intervals; The cable connector (12) includes a first cable (121) and a second cable (122). The first cable (121) is electrically connected to the positive contact (1141) and is used to connect to the positive terminal box (21) of the photovoltaic module (20) along the middle busbar (24) on the back of the photovoltaic module (20). The second cable (122) is electrically connected to the negative contact (1142) and is used to connect to the negative terminal box (22) of the photovoltaic module (20) along the middle busbar (24) on the back of the photovoltaic module (20).

7. A testing apparatus, characterized in that, include: The test fixture (10) according to any one of claims 1-6; A conveying mechanism (30) is provided with a test station, and the conveying mechanism (30) is used to convey the photovoltaic module (20) to the test station; A light source, which is arranged above the test station; as well as A power tester, wherein the probe of the power tester is set at the test station, and when the photovoltaic module (20) enters the test station, the probe makes electrical contact with the detection contact of the test fixture (10) fixed on the photovoltaic module (20) to perform power testing on the back side of the photovoltaic module (20).

8. The testing apparatus according to claim 7, characterized in that, The testing device also includes a lifting mechanism (40), which is located at the testing station and is used to drive the photovoltaic module (20) entering the testing station to rise or fall.

9. The testing apparatus according to claim 7, characterized in that, The testing device also includes a correction mechanism (50), which is located at the testing station and is used to correct the photovoltaic module (20) entering the testing station.

10. The testing apparatus according to claim 9, characterized in that, The correction mechanism (50) includes multiple correction wheels (51), which are respectively arranged on both sides of the test station. Each correction wheel (51) is connected to a pusher (52), which is used to drive the correction wheel (51) to abut against the photovoltaic module (20) to correct the photovoltaic module (20) from the opposite sides of the photovoltaic module (20).

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