Photovoltaic module testing all-in-one machine

Abstract

The utility model relates to the technical field of photovoltaic modules, in particular to a photovoltaic module testing all-in-one machine, which comprises an IV testing device, an EL testing device, a switching box, a control cabinet and a probe piece, the IV testing device comprises a darkroom, a lamp box and an IV acquisition system, the EL testing device comprises an EL camera and an EL power supply system, and the EL power supply system is used for supplying power to the EL camera. According to the utility model, when an IV test needs to be carried out, the lamp box is turned on, the control cabinet controls the probe member to be connected with the photovoltaic assembly, controls the first relay to be turned on, controls the second relay to be turned off, and controls the photovoltaic assembly to be communicated with the IV acquisition system to carry out the IV test, and when an EL test is carried out, the control cabinet controls the second relay to be turned on and the first relay to be turned off. And the photovoltaic module is communicated with the EL power supply system for EL test, so that the darkroom and the EL camera can be integrated on one station to test the photovoltaic module under the condition that the IV test and the EL test do not influence each other.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic modules, and particularly relates to an integrated photovoltaic module testing machine. Background Art

[0002] In the production of photovoltaic modules, in order to ensure the safe and stable operation of photovoltaic power stations, IV testing equipment and EL testing equipment are usually used to perform IV testing and EL testing on photovoltaic modules.

[0003] The IV testing equipment includes an IV acquisition system, a dark room, a lamp box, a control cabinet, and a probe. Both the probe and the lamp box are connected to the IV acquisition system. In the IV testing, the lamp box works to simulate sunlight irradiating on the photovoltaic module. By controlling the connection between the probe and the photovoltaic module, since the probe contacts the photovoltaic module, the current and voltage are transmitted to the IV acquisition system for acquisition and testing. By simulating sunlight with the lamp box, the electrical performance parameters of the photovoltaic module are thus tested.

[0004] The EL testing equipment includes an EL power supply system, an EL camera (electroluminescence camera), and a probe. The probe is connected to the photovoltaic module, and the EL power supply system is connected to the photovoltaic module. By applying a certain voltage to the photovoltaic module, electrons inside the photovoltaic module are excited and visible light is emitted. The fluorescence image on the surface of the photovoltaic module is captured by the EL camera to test the quality of the photovoltaic module and determine whether there are any defects in the photovoltaic module.

[0005] Since the purposes and methods of the IV testing equipment and the EL testing equipment are different, currently, the IV testing and the EL testing are carried out at two workstations. After the photovoltaic modules on the assembly line are subjected to IV testing by the IV testing equipment, they enter the next workstation through the assembly line for EL testing.

[0006] However, this method requires an additional conveyor line between the IV testing equipment and the EL testing equipment, occupying space in the production site and increasing costs. Summary of the Utility Model

[0007] (1) The problem to be solved by the utility model is: how to save the space in the production site and reduce costs.

[0008] (2) Technical Solution

[0009] An integrated photovoltaic module testing machine provided by the utility model includes an IV testing device, an EL testing device, a switching box, a control cabinet, and a probe;

[0010] The IV testing device includes a dark room, a lamp box, and an IV acquisition system;

[0011] The EL test device includes an EL camera and an EL power supply system for powering the EL camera;

[0012] The light box and the EL camera are both arranged on the top of the darkroom. The IV acquisition system, the EL power supply system, and the light box are all electrically connected to the control cabinet;

[0013] The probe is used to connect with the photovoltaic module;

[0014] The switching box includes a first relay and a second relay, and both the first relay and the second relay are electrically connected to the control cabinet;

[0015] The probe is electrically connected to the IV acquisition system through the first relay;

[0016] The probe is electrically connected to the EL power supply system through the second relay;

[0017] When in the IV test mode, the probe is connected to the photovoltaic module, and the control cabinet controls the first relay to turn on and the second relay to turn off, so that the photovoltaic module is connected to the IV acquisition system;

[0018] When in the EL test mode, the probe is connected to the photovoltaic module, and the control cabinet controls the first relay to turn off and the second relay to turn on, so that the photovoltaic module is connected to the EL power supply system.

[0019] According to an embodiment of the present invention, the probe includes two probes, and the two probes are installed in the darkroom and are respectively used to connect with the positive copper sheet and the negative copper sheet of the photovoltaic module.

[0020] According to an embodiment of the present invention, the darkroom includes a frame, the light box is installed on the top of the frame, and there are two EL cameras, and the two EL cameras are respectively located on both sides of the light box.

[0021] According to an embodiment of the present invention, the frame includes a sealing plate and fixing rods for installing the sealing plate;

[0022] Yield holes are formed on both sides of the sealing plate, and an adjusting component is arranged in each yield hole. The adjusting component is installed on the fixing rod, and one EL camera is installed on each adjusting component. The adjusting component is used to adjust the position of the EL camera.

[0023] According to an embodiment of the present invention, the fixing rod includes a first rod body, and a first sliding groove is formed on the first rod body;

[0024] The adjusting assembly includes a first mounting plate and a first fastener;

[0025] The first mounting plate is slidably connected to the first sliding groove, and the first fastener is used to fix the first mounting plate on the first sliding groove.

[0026] According to an embodiment of the present invention, the adjusting assembly includes a second mounting plate, a second fastener, a third mounting plate and a third fastener;

[0027] A first strip-shaped hole is formed in the first mounting plate, the second mounting plate is slidably connected to the first strip-shaped hole, and the second fastener is used to fix the second mounting plate on the first strip-shaped hole;

[0028] The EL camera is fixed on the third mounting plate, a second strip-shaped hole is formed in the second mounting plate, the third mounting plate is slidably connected to the second strip-shaped hole, and the third fastener is used to fix the third mounting plate on the second strip-shaped hole.

[0029] According to an embodiment of the present invention, the first rod body includes a limiting groove, the length direction of the limiting groove is the same as the length direction of the first sliding groove, and a reinforcing plate is fixedly connected to the first mounting plate, and the reinforcing plate is slidably connected to the limiting groove.

[0030] According to an embodiment of the present invention, the first fastener includes a first bolt and a first nut. After the first bolt sequentially passes through the first sliding groove and the first mounting plate, the first bolt is screwed with the first nut;

[0031] The second fastener includes a second bolt and a second nut. After the second bolt sequentially passes through the second mounting plate and the first strip-shaped hole, the second bolt is screwed with the second nut.

[0032] According to an embodiment of the present invention, a third strip-shaped hole is formed in the third mounting plate, and the width of the third strip-shaped hole is greater than the width of the second strip-shaped hole;

[0033] The third fastener includes a third bolt and a third nut. After the third bolt sequentially passes through the second strip-shaped hole and the third strip-shaped hole, the third bolt is screwed with the third nut;

[0034] The length directions of the first sliding groove, the first strip-shaped hole and the second strip-shaped hole are perpendicular to each other.

[0035] According to an embodiment of the present invention, the control cabinet is located on one side of the darkroom, and the IV acquisition system and the EL power supply system are both located in the control cabinet.

[0036] Advantages of the present utility model:

[0037] By electrically connecting the first relay in the switching box to the IV acquisition system in the IV test device, and electrically connecting the second relay to the EL power supply system in the EL test device, after the photovoltaic module on the production line enters the darkroom, when it is necessary to perform an IV test on it, the light box is turned on, the first relay is controlled to turn on, and the second relay is turned off. The probe is connected to the photovoltaic module, and then the photovoltaic module is connected to the IV acquisition system to perform the IV test. When performing the EL test, the second relay is controlled to turn on and the first relay is turned off through the control cabinet, the EL camera works, and the photovoltaic module is connected to the EL power supply system to perform the EL test. Thus, the light box, the darkroom, and the EL camera can be integrated into one station to test the photovoltaic module without interfering with each other in the IV test and the EL test, without the need to purchase an additional conveyor line between the darkroom and the EL camera, reducing costs and saving space at the production site.

[0038] Since the EL camera is arranged on the top of the darkroom and on one side of the light box, during the IV test, the EL camera will not block the light source of the light box and thus will not interfere with the IV test. Similarly, when performing the EL test on the photovoltaic module, the light box is on one side of the EL camera and will not interfere with the EL camera photographing the photovoltaic module. Description of the Drawings

[0039] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0040] Figure 1 Schematic three-dimensional view of the photovoltaic module integrated machine provided by the embodiment of the present utility model;

[0041] Figure 2 First three-dimensional view of the darkroom, light box, EL camera and adjustment component provided by the embodiment of the present utility model;

[0042] Figure 3 Provided by the embodiment of the present utility model Figure 2 Enlarged view of part A in

[0043] Figure 4 Second three-dimensional view of the darkroom, light box, EL camera and adjustment component provided by the embodiment of the present utility model;

[0044] Figure 5Provided by an embodiment of the present utility model Figure 4 An enlarged view of part B in

[0045] Figure 6 A schematic diagram of the connection relationship of the IV acquisition system, EL power supply system, probe member, and switching box provided by an embodiment of the present utility model;

[0046] Figure 7 A front view of the darkroom provided by an embodiment of the present utility model.

[0047] Icons: 1, darkroom; 101, sealing plate; 102, first rod body; 103, first chute; 104, relief hole; 105, light box; 106, probe member; 2, EL camera; 3, adjustment assembly; 301, first mounting plate; 302, second mounting plate; 303, third mounting plate; 304, first strip-shaped hole; 305, second strip-shaped hole; 306, third strip-shaped hole; 4, first relay; 5, second relay; 6, control cabinet; 7, IV acquisition system; 8, EL power supply system. Detailed implementation manners

[0048] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0049] As Figures 1-7 shown, an embodiment of the present utility model provides a photovoltaic module testing all-in-one machine, including an IV testing device, an EL testing device, a switching box, a control cabinet 6, and a probe member 106;

[0050] The IV testing device includes a darkroom 1, a light box 105, and an IV acquisition system 7;

[0051] The EL testing device includes an EL camera 2 and an EL power supply system 8, and the EL power supply system 8 is used to supply power to the EL camera 2;

[0052] The light box 105 and the EL camera 2 are both arranged on the top of the darkroom 1, and the IV acquisition system 7, the EL power supply system 8, and the light box 105 are all electrically connected to the control cabinet 6;

[0053] The probe member 106 is used to connect with the photovoltaic module;

[0054] The switching box includes a first relay 4 and a second relay 5, and both the first relay 4 and the second relay 5 are electrically connected to the control cabinet 6;

[0055] The probe member 106 is electrically connected to the IV acquisition system 7 through the first relay 4;

[0056] The probe member 106 is electrically connected to the EL power supply system 8 through the second relay 5;

[0057] When in the IV test mode, the probe member 106 is connected to the photovoltaic module, and the control cabinet 6 controls the first relay 4 to turn on and the second relay 5 to turn off, so that the photovoltaic module is connected to the IV acquisition system 7;

[0058] When in the EL test mode, the probe member 106 is connected to the photovoltaic module, and the control cabinet 6 controls the first relay 4 to turn off and the second relay 5 to turn on, so that the photovoltaic module is connected to the EL power supply system 8.

[0059] By electrically connecting the first relay 4 in the switching box to the IV acquisition system 7 in the IV test device and the second relay 5 to the EL power supply system 8 in the EL test device, after the photovoltaic module on the production line enters the darkroom 1, when an IV test is required for it, the light box 105 is turned on, the first relay 4 is controlled to turn on, the second relay 5 is turned off, the probe member 106 is connected to the photovoltaic module, and then the photovoltaic module is connected to the IV acquisition system 7 for an IV test. When an EL test is performed, the second relay 5 is controlled to turn on and the first relay 4 is turned off by the control cabinet 6, the EL camera 2 works, the photovoltaic module is connected to the EL power supply system 8 for an EL test. Thus, the light box 105 and the EL camera 2 can be integrated into one station to test the photovoltaic module without interference between the IV test and the EL test, without the need to purchase an additional conveyor line between the darkroom 1 and the EL camera 2, reducing costs and saving space at the production site.

[0060] Since the EL camera 2 is arranged on the top of the darkroom 1 and the EL camera 2 is located on one side of the light box 105, during the IV test, the EL camera 2 will not block the light source of the light box 105 and thus will not interfere with the IV test. Similarly, when an EL test is performed on the photovoltaic module, the light box 105 is located on one side of the EL camera 2 and will not be interfered by the EL camera 2 when photographing the photovoltaic module.

[0061] The EL camera 2 is electrically connected to the EL power supply system 8.

[0062] Specifically, the probe member 106 includes two probes, the two probes are installed in the darkroom 1, and the two probes are respectively used to connect to the positive copper sheet and the negative copper sheet of the photovoltaic module.

[0063] During the EL and IV tests, two probes always press against the positive and negative copper sheets of the photovoltaic module respectively. After the test is completed, the two probes are separated from the photovoltaic module. The two probes rise through the lifting mechanism to separate from the photovoltaic module, and the lifting mechanism drives the two probes to descend to contact the positive and negative copper sheets of the photovoltaic module. This is the prior art and will not be elaborated here.

[0064] Of course, in this embodiment, when the photovoltaic module is installed with a junction box, the two probes can also be connected to the two MC4 connectors on the junction box of the photovoltaic module, and the probe member 106 can also be connected to the photovoltaic module.

[0065] It should be noted that both probes are electrically connected to the first relay 4 and both probes are electrically connected to the second relay 5.

[0066] The existing EL test is located at a separate workstation. Multiple EL cameras are arranged in a row perpendicular to the conveying direction of the assembly line and work together to test the photovoltaic module. Since the EL cameras are relatively close to the photovoltaic module, if multiple EL cameras only take one shot, a wide-angle lens, or even a fish-eye lens, must be used to take the entire photovoltaic module in one shot. However, this type of lens will cause image distortion around the edges of the photo, and software is required to adjust the distorted area. During the software adjustment process, the torn and damaged area in the original photovoltaic module may be corrected to a normal condition, resulting in unqualified photovoltaic modules not being detected. If the photovoltaic module is moved on the assembly line in a step-by-step manner and the EL camera takes three shots to capture the entire photovoltaic module, then each photo needs to be cropped and stitched together, so there will be obvious stitching marks on the photo. Moreover, each time a photo is taken, the power supply needs to be turned on once, and the power of the power supply each time will affect the gray value of the EL image, making the gray values of each part of the picture inconsistent and can only be adjusted from the software.

[0067] According to an embodiment of the present invention, the darkroom 1 includes a frame, a light box 105 is installed on the top of the frame, and there are two EL cameras 2, and the two EL cameras 2 are respectively located on both sides of the light box 105.

[0068] In this embodiment, by setting two EL cameras 2 and symmetrically installing them on both sides of the light box 105, the height of the frame of the dark room 1 can be utilized to keep the EL cameras 2 away from the photovoltaic module. The two EL cameras 2 can then capture the entire photovoltaic module without the need for a wide-angle or fish-eye lens. As a result, the photos taken are less likely to be distorted around the edges and do not require software adjustment and repair. Consequently, the situation where the torn and damaged parts of the photovoltaic module are repaired to normal will not occur, and unqualified photovoltaic modules can be detected. Since the EL cameras 2 are relatively far from the photovoltaic module, the two EL cameras 2 can capture the entire photovoltaic module in one power-on. The photos taken only need to have the overlapping area of the two photos cropped, and the splicing marks are not obvious. Moreover, the photos of the photovoltaic module are directly taken in one power-on. The grayscale values of the current photos of the photovoltaic module taken by the two EL cameras 2 each time are the same, and there is no need to adjust the grayscale value through software separately, saving time and effort.

[0069] In a traditional laboratory, an integrated machine for testing photovoltaic modules that combines a single-lens reflex camera and a dark room is used. Since the single-lens reflex camera needs to capture the entire photovoltaic module at once, due to the need for depth of field, the aperture of the single-lens reflex camera needs to be adjusted smaller, reducing the light input and resulting in a longer exposure time, approximately 8 - 10 seconds. To avoid damage to the copper sheets of the positive and negative electrodes of the photovoltaic module or an increase in the temperature of the copper sheets and an increase in the resistance of the internal circuit due to the long exposure time, a probe is continuously pressed against the copper sheets of the positive and negative electrodes of the photovoltaic module. Therefore, in the laboratory, a junction box is generally installed on the photovoltaic module, and two MC4 connectors are led out. Manual operation is required to cooperate with the two MC4 connectors of the single-lens reflex camera to perform EL testing on the photovoltaic module. The testing efficiency is low, and it is not suitable for batch testing of photovoltaic modules on a production line.

[0070] In this embodiment, since two EL cameras 2 are used and each EL camera 2 only needs to capture half of the photovoltaic module, the aperture of the EL camera 2 can be appropriately enlarged to increase the light input, and the exposure time can be shortened to between 400 - 500 milliseconds. Therefore, during the EL testing, due to the greatly shortened time, the wear and temperature rise of the copper sheets of the positive and negative electrodes of the photovoltaic module can be ignored. The two probes can be driven by the lifting mechanism in the IV testing device to descend and press against the copper sheets of the positive and negative electrodes of the photovoltaic module respectively, realizing the automatic connection between the probe member 106 and the photovoltaic module. The testing time of the photovoltaic module is shortened, and there is no need for manual connection. The testing efficiency is improved, and it is suitable for batch testing of photovoltaic modules on a production line. Moreover, the EL camera 2 has a more stable transmission, a higher frame rate, and a better shooting effect.

[0071] According to an embodiment of the present invention, as Figure 3 and Figure 5 shown, the frame includes a sealing plate 101 and fixing rods, and the fixing rods are used to install the sealing plate 101;

[0072] On both sides of the sealing plate 101, relief holes 104 are provided. An adjusting assembly 3 is arranged in each relief hole 104. The adjusting assembly 3 is installed on a fixed rod. An EL camera 2 is installed on each adjusting assembly 3. The adjusting assembly 3 is used to adjust the position of the EL camera 2.

[0073] Since the size specifications of the photovoltaic modules are different, in order to be able to photograph the photovoltaic modules completely while reducing the situation of photo cropping during shooting, usually after changing the specification of the photovoltaic module, according to the photos taken of the previous groups of photovoltaic modules, the positions of the two EL cameras 2 are adjusted to reduce the overlapping area or blank area of the photos taken, so that there is no need to crop the photos and the shooting effect is better.

[0074] According to an embodiment of the present invention, as Figure 3 shown, the fixed rod includes a first rod body 102, and a first sliding groove 103 is provided on the first rod body 102;

[0075] The adjusting assembly 3 includes a first mounting plate 301 and a first fastening member;

[0076] The first mounting plate 301 is slidably connected to the first sliding groove 103, and the first fastening member is used to fix the first mounting plate 301 on the first sliding groove 103.

[0077] According to an embodiment of the present invention, the first fastening member includes a first bolt and a first nut. After the first bolt passes through the first sliding groove 103 and the first mounting plate 301 in sequence, the first bolt is screwed with the first nut.

[0078] The first mounting plate 301 is a first L-shaped plate, and a first through hole is provided on the side thereof that fits with the first rod body 102. The first sliding groove 103 is a T-shaped groove, which is composed of a first groove body and a second groove body that are connected. The width of the first groove body is greater than the width of the second groove body. The head of the first bolt is located in the first groove body and the size of the head of the first bolt is greater than the second groove body.

[0079] Preferably, the threaded portion of the first bolt is adapted to the second groove body, so that the first bolt can only slide along the length direction of the first sliding groove 103.

[0080] Optionally, a slider adapted to the size of the first sliding groove 103 is fixedly connected to one side of the first mounting plate 301. The slider is slidably connected in the first sliding groove 103, and it can also realize that the first mounting plate 301 only slides along the length direction of the first sliding groove 103.

[0081] The threaded portion of the first bolt passes through the second groove body and the first through hole and is screwed with the first nut. By turning the first nut to move the first nut away from the head of the first bolt, the first bolt can slide along the length direction of the first chute 103 in the first chute 103, and then the first mounting plate 301 can move along the length direction of the first chute 103. By turning the first nut closer to the head of the first bolt, the first mounting plate 301 is clamped between the head of the first bolt and the first nut, thereby fixing the relative position of the first mounting plate 301 and the first chute 103.

[0082] It should be noted that one or more first fasteners can be provided. The more the number of fasteners provided, the better the stability of fixing the first mounting plate 301 to the first rod 102.

[0083] According to an embodiment of the present invention, the first rod 102 includes a limiting groove. The structure of the limiting groove is the same as that of the first chute 103, and the length direction of the limiting groove is the same as that of the first chute 103. A reinforcing plate is fixedly connected to the first mounting plate 301, and the reinforcing plate is slidably connected to the limiting groove.

[0084] The arrangement of the reinforcing plate and the limiting groove serves to assist the first mounting plate 301 in sliding along the first chute 103. Moreover, since the weights of the second mounting plate 302, the third mounting plate 303, and the EL camera 2 are all pressed on the first mounting plate 301, the reinforcing plate can also provide corresponding supporting effects.

[0085] Further, a fourth bolt is placed in the limiting groove. The fourth bolt passes through the limiting groove and the reinforcing plate in sequence and is screwed with a fourth nut, so that the stability of fixing the first mounting plate 301 is better.

[0086] It should be noted that the first rod 102 can be made of aluminum profile. The aluminum profile itself has the first chute 103 and the limiting groove, and thus the characteristics of the structure of the aluminum profile itself can be utilized to adjust the EL camera 2 along the length direction of the aluminum profile.

[0087] According to an embodiment of the present invention, as Figure 3 shown, the adjusting assembly 3 includes a second mounting plate 302, a second fastener, a third mounting plate 303, and a third fastener;

[0088] A first strip-shaped hole 304 is formed in the first mounting plate 301. The second mounting plate 302 is slidably connected to the first strip-shaped hole 304, and the second fastener is used to fix the second mounting plate 302 to the first strip-shaped hole 304;

[0089] The EL camera 2 is fixed on the third mounting plate 303. A second strip-shaped hole 305 is formed in the second mounting plate 302. The third mounting plate 303 is slidably connected to the second strip-shaped hole 305. A third fastener is used to fix the third mounting plate 303 on the second strip-shaped hole 305.

[0090] Wherein, the length direction of the second mounting plate 302, the length direction of the first mounting plate 301, and the length direction of the first rod 102 are perpendicular to each other, so that the position adjustment of the EL camera 2 in the horizontal direction and the vertical direction can be realized.

[0091] The second fastener includes a second bolt and a second nut. After the second bolt passes through the second mounting plate 302 and the first strip-shaped hole 304 in sequence, the second bolt is screwed with the second nut. The head of the second bolt is larger than the first strip-shaped hole 304, and the threaded part of the second bolt is adapted to the first strip-shaped hole 304.

[0092] It should be noted that one or more second fasteners can be provided. The more the number of second fasteners provided, the better the stability of fixing the first mounting plate 301 and the second mounting plate 302.

[0093] Of course, in this embodiment, the adjusting assembly 3 can also be in other forms. For example, the adjusting assembly 3 includes three first telescopic rods, second telescopic rods, and third telescopic rods with mutually perpendicular length directions. The fixed end of the first telescopic rod is fixedly connected to the first rod 102. The fixed end of the second telescopic rod is fixedly connected to the pushing end of the first telescopic rod. The fixed end of the third telescopic rod is fixedly connected to the pushing end of the second telescopic rod. The EL camera 2 is installed on the pushing end of the third telescopic rod. The position of the EL camera 2 can also be adjusted by the telescopic movement of the first telescopic rod, the second telescopic rod, and the third telescopic rod. Thus, the overlapping area of the taken photos can be reduced.

[0094] According to an embodiment of the present invention, a third strip-shaped hole 306 is formed in the third mounting plate 303. The width of the third strip-shaped hole 306 is greater than the width of the second strip-shaped hole 305;

[0095] The third fastener includes a third bolt and a third nut. After the third bolt passes through the second strip-shaped hole 305 and the third strip-shaped hole 306 in sequence, the third bolt is screwed with the third nut;

[0096] The length direction of the first chute 103, the length direction of the first strip-shaped hole 304, and the length direction of the second strip-shaped hole 305 are perpendicular to each other. The length direction of the first strip-shaped hole 304 is the same as the length direction of the first mounting plate 301. The length direction of the second strip-shaped hole 305 is the same as the length direction of the second mounting plate 302. The length direction of the first chute 103 is the same as the length direction of the first rod 102. The second mounting plate 302 and the third mounting plate 303 are both L-shaped plates.

[0097] It should be noted that one third bolt and one third nut can be provided. However, when there is only one, higher requirements are imposed on the third bolt and the third nut for clamping and fastening the second mounting plate 302 and the third mounting plate 303 to prevent deviation due to loosening. Therefore, usually, two or more third bolts and third nuts are provided.

[0098] By setting the width of the third elongated hole 306 to be greater than the width of the second elongated hole 305, the elevation angle of the EL camera 2 can be adjusted according to the actual situation when installing two third bolts and two third nuts, making the position adjustment of the EL camera 2 more appropriate.

[0099] According to an embodiment of the present invention, the control cabinet 6 is located on one side of the darkroom 1, and the IV acquisition system 7 and the EL power supply system 8 are both located inside the control cabinet 6.

[0100] The length of the second mounting plate 302 is less than the length of the relief hole 104, so that the second mounting plate 302 will not interfere with the EL camera 2 when adjusting its position.

[0101] The first nut, the second nut and the third nut are rear-mounted nuts, and this design makes it more convenient to adjust the position of the EL camera 2.

[0102] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper", "lower", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0103] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the connection inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0104] The above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A photovoltaic module testing machine, characterized in that: It includes an IV test device, an EL test device, a switch box, a control cabinet (6) and a probe member (106); The IV testing device comprises a darkroom (1), a light box (105) and an IV collection system (7); The EL testing device comprises an EL camera (2) and an EL power supply system (8), wherein the EL power supply system (8) is used to supply power to the EL camera (2); The light box (105) and the EL camera (2) are both arranged on the top of the darkroom (1), and the IV acquisition system (7), the EL power supply system (8) and the light box (105) are all electrically connected to the control cabinet (6); The probe member (106) is used to connect with a photovoltaic module; The switch box comprises a first relay (4) and a second relay (5), and the first relay (4) and the second relay (5) are both electrically connected to the control cabinet (6); The probe member (106) is electrically connected to the IV collection system (7) via the first relay (4); The probe member (106) is electrically connected to the EL power supply system (8) via the second relay (5); When in IV test mode, the probe member (106) is connected to the photovoltaic assembly, the control cabinet (6) controls the first relay (4) to be turned on, and the second relay (5) to be turned off, so that the photovoltaic assembly is connected to the IV collection system (7); When in the EL test mode, the probe member (106) is connected to the photovoltaic component, and the control cabinet (6) controls the first relay (4) to be closed and the second relay (5) to be opened, so that the photovoltaic component is connected to the EL power supply system (8).

2. A photovoltaic module testing machine according to claim 1, characterized in that: The probe member (106) comprises two probes, the two probes are installed in the darkroom (1), and the two probes are used to connect to the positive copper sheet and the negative copper sheet of the photovoltaic module respectively.

3. The photovoltaic module testing machine according to claim 2, characterized in that: The darkroom (1) comprises a frame, the light box (105) is installed on the top of the frame, and two EL cameras (2) are provided, and the two EL cameras (2) are respectively located on both sides of the light box (105).

4. The photovoltaic module testing integrated machine according to claim 3, characterized in that: The frame comprises a sealing plate (101) and a fixing rod, wherein the fixing rod is used to install the sealing plate (101); Both sides of the sealing plate (101) are provided with clearance holes (104), each of the clearance holes (104) is provided with an adjustment component (3), the adjustment component (3) is mounted on the fixed rod, each of the adjustment components (3) is mounted with an EL camera (2), and the adjustment component (3) is used to adjust the position of the EL camera (2).

5. The photovoltaic module testing integrated machine according to claim 4, characterized in that: The fixed rod comprises a first rod body (102), and a first sliding groove (103) is formed on the first rod body (102); The adjustment assembly (3) comprises a first mounting plate (301) and a first fastener; The first mounting plate (301) is slidably connected to the first sliding groove (103), and the first fastener is used to fix the first mounting plate (301) on the first sliding groove (103).

6. The photovoltaic module testing integrated machine according to claim 5, characterized in that: The adjustment assembly (3) comprises a second mounting plate (302), a second fastener, a third mounting plate (303) and a third fastener; The first mounting plate (301) is provided with a first strip-shaped hole (304), the second mounting plate (302) is slidably connected to the first strip-shaped hole (304), and the second fastener is used to fix the second mounting plate (302) on the first strip-shaped hole (304); The EL camera (2) is fixed on the third mounting plate (303), a second strip hole (305) is provided on the second mounting plate (302), the third mounting plate (303) is slidably connected to the second strip hole (305), and the third fastener is used to fix the third mounting plate (303) on the second strip hole (305).

7. The photovoltaic module testing integrated machine according to claim 5, characterized in that: The first rod body (102) comprises a limiting groove, the length direction of the limiting groove is the same as the length direction of the first sliding groove (103), and a reinforcing plate is fixedly connected to the first mounting plate (301), and the reinforcing plate is slidably connected to the limiting groove.

8. The photovoltaic module testing integrated machine according to claim 6, characterized in that: The first fastener comprises a first bolt and a first nut, and after the first bolt passes through the first slide groove (103) and the first mounting plate (301) in sequence, the first bolt is threadedly connected to the first nut; The second fastener comprises a second bolt and a second nut. After the second bolt passes through the second mounting plate (302) and the first strip-shaped hole (304) in sequence, the second bolt is threadedly connected to the second nut.

9. The photovoltaic module testing integrated machine according to claim 6, characterized in that: The third mounting plate (303) is provided with a third strip-shaped hole (306), and the width of the third strip-shaped hole (306) is greater than the width of the second strip-shaped hole (305); The third fastener comprises a third bolt and a third nut. After the third bolt passes through the second strip hole (305) and the third strip hole (306) in sequence, the third bolt is threadedly connected with the third nut. The length direction of the first sliding groove (103), the length direction of the first strip-shaped hole (304), and the length direction of the second strip-shaped hole (305) are perpendicular to each other.

10. The photovoltaic module testing integrated machine according to claim 1, characterized in that: The control cabinet (6) is located at one side of the darkroom (1), and the IV acquisition system (7) and the EL power supply system (8) are both located inside the control cabinet (6).

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