Device for detecting front and back surfaces of photovoltaic glass

Abstract

The utility model relates to a photovoltaic glass front and back surface detection device. The device comprises a support, a probe, a detection module and a processor. The support is provided with a plurality of mounting holes, the probes are arranged in the mounting holes in a one-to-one correspondence mode, and the probes can move in the length direction of the probes. The number of the detection modules is multiple, all the detection modules and all the probes are arranged in a one-to-one correspondence mode, and the detection modules are used for detecting displacement information of the probes corresponding to the detection modules. The processor is in communication connection with the detection module and is used for judging whether the face, making contact with the first end of the probe, of the photovoltaic glass is the front face or the back face according to the displacement information. The probe is in contact with the photovoltaic glass, and the front and back surfaces of the photovoltaic glass are judged according to the displacement information of the probe in the length direction, so that the detection accuracy can be improved.

Description

Technical Field

[0001] This application relates to the field of photovoltaic module manufacturing technology, and in particular to a device for inspecting the front and back sides of photovoltaic glass. Background Technology

[0002] During the production of photovoltaic modules, photovoltaic glass needs to be bonded to the front and back of the solar cells. The photovoltaic glass protects the solar cells and can extend the life of the photovoltaic module. At the same time, the high optical transmittance of the photovoltaic glass allows sunlight to enter the photovoltaic module, improving the power generation efficiency of the photovoltaic module.

[0003] Photovoltaic glass has a front and a back side; the front side is smooth, and the back side is a textured, embossed surface. During production, the back side of the photovoltaic glass is bonded to the solar cell. However, during the production of photovoltaic modules, the front side of the photovoltaic glass may be mistakenly bonded to the solar cell, which will reduce the power generation efficiency of the photovoltaic module and may even cause the module to be scrapped. Therefore, a device for detecting the front and back sides of photovoltaic glass is needed. Utility Model Content

[0004] Therefore, it is necessary to provide a device for detecting the front and back sides of photovoltaic glass, which can determine the front and back sides of photovoltaic glass and improve the accuracy of detection.

[0005] A device for detecting the front and back surfaces of photovoltaic glass, wherein the photovoltaic glass has a front surface and a back surface, the front surface is a smooth surface and the back surface is a rough surface, and the device comprises:

[0006] The bracket has multiple mounting holes;

[0007] The probe is provided in multiple parts, and all the probes are arranged one-to-one in all the mounting holes. When the front and back detection device of the photovoltaic glass is placed on the photovoltaic glass, the first end of all the probes is in contact with the photovoltaic glass, and all the probes can be displaced in their length direction.

[0008] The detection module comprises multiple modules, each corresponding to one of the probes. Each detection module is used to detect the displacement information of its corresponding probe.

[0009] The processor is communicatively connected to the detection module and is used to determine, based on the displacement information, whether the side of the photovoltaic glass that contacts the first end of the probe is the front or the back.

[0010] In one embodiment, the displacement information includes the number of probes with abnormal displacement; the detection module includes a first sensor disposed at a first end of the probe, the first sensor being used to measure the pressure applied to the probe, and the processor being able to obtain the number of probes with abnormal displacement based on all the pressure values.

[0011] In one embodiment, the displacement information further includes the displacement of the probe in its length direction when the displacement is abnormal; the detection module further includes a second sensor, and the photovoltaic glass front and back detection device further includes a control module, which is communicatively connected to the first sensor and the second sensor, and the control module is used to control the second sensor to measure the displacement of the probe in its length direction when the displacement is abnormal according to the pressure value.

[0012] In one embodiment, the displacement information includes the displacement of the probe with abnormal displacement in its length direction; the detection module includes a first sensor and a second sensor, the first sensor being used to measure the pressure on the probe; the photovoltaic glass front and back detection device further includes a control module, the control module being communicatively connected to the first sensor and the second sensor, the control module being used to control the second sensor to measure the displacement of the probe with abnormal displacement in its length direction according to the pressure value; the processor includes an information acquisition module, a coordinate transformation module, and an image generation module, the information acquisition module being used to acquire the two-dimensional coordinates of all the probes, the coordinate transformation module being used to derive the three-dimensional coordinates based on the two-dimensional coordinates and the displacement, and the image generation module being used to construct a three-dimensional model of the photovoltaic glass based on the three-dimensional coordinates.

[0013] In one embodiment, the photovoltaic glass front and back detection device further includes an elastic reset member. Multiple elastic reset members are provided, and each probe corresponds to at least one elastic reset member. One end of the elastic reset member is connected to the probe, and the other end of the elastic reset member is connected to the bracket. The elastic reset member is used to drive the probe connected to it to reset.

[0014] In one embodiment, the elastic reset element is a spring, which is sleeved on the probe and disposed within the mounting hole.

[0015] In one embodiment, the first end of the probe is tapered.

[0016] In one embodiment, the first end of the probe is spherical.

[0017] In one embodiment, all the probes are arranged in an array.

[0018] In one embodiment, the photovoltaic glass front and back detection device further includes connecting cables, and multiple connecting cables are provided. All connecting cables are connected to all detection modules in a one-to-one correspondence, and all connecting cables are connected to the processor; or, the detection modules are wirelessly connected to the processor.

[0019] The aforementioned photovoltaic glass front and back inspection device, after the photovoltaic glass is transported to the inspection station, places the photovoltaic glass front and back inspection device on the surface of the photovoltaic glass, that is, the first end of the probe contacts the surface of the photovoltaic glass, all the probes are displaced in their length direction, the inspection module detects the displacement information of the probes in their length direction, and the processor determines the front and back of the photovoltaic glass based on the displacement information, which can improve the accuracy of inspection. Attached Figure Description

[0020] Figure 1 This is a partial structural schematic diagram of a photovoltaic glass front and back inspection device according to an embodiment of this application.

[0021] Figure 2 for Figure 1 The cross-sectional view of the photovoltaic glass front and back inspection device shown.

[0022] Figure 3 This is a schematic diagram of the structure of the photovoltaic glass front and back inspection device according to one embodiment of this application.

[0023] Figure 4 This is a top view of a photovoltaic glass front and back inspection device according to an embodiment of this application during inspection.

[0024] Figure 5 This is a front view of a photovoltaic glass front and back inspection device according to an embodiment of this application during inspection.

[0025] Explanation of icon numbers:

[0026] 10. Bracket; 11. Mounting hole; 20. Probe; 21. First end; 30. Processor; 40. Resilient reset element; 50. Connecting cable; 60. Photovoltaic glass; 61. Protrusion. Detailed Implementation

[0027] 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.

[0028] During the production of photovoltaic modules, photovoltaic glass 60 needs to be bonded to the front and back of the solar cells. The photovoltaic glass 60 protects the solar cells and can extend the service life of the photovoltaic modules. At the same time, the photovoltaic glass 60 has high optical transmittance, which allows sunlight to enter the photovoltaic modules and improves the power generation efficiency of the photovoltaic modules.

[0029] The photovoltaic glass 60 has a front and a back surface. The front surface is smooth, and the back surface is a rough surface with embossing, wherein the embossing depth is 15μm to 90μm. During production, the back surface of the photovoltaic glass 60 is bonded to the solar cell. However, during the production of photovoltaic modules, there is a phenomenon where the front surface of the photovoltaic glass 60 is mistakenly bonded to the solar cell, which reduces the power generation efficiency of the photovoltaic module and may even cause the photovoltaic module to be scrapped. Therefore, this embodiment provides a photovoltaic glass front and back inspection device. In use, the photovoltaic glass front and back inspection device is placed on the front or back surface of the photovoltaic glass 60 to inspect the front and back surfaces of the photovoltaic glass 60.

[0030] In one embodiment, see Figure 3 The photovoltaic glass front and back inspection device includes a bracket 10, a probe 20, an inspection module, and a processor 30.

[0031] Further, see Figure 1 The bracket 10 has multiple mounting holes 11. Multiple probes 20 are provided, each corresponding to one of the mounting holes 11. When the photovoltaic glass front and back inspection device is placed on the photovoltaic glass 60, the first end 21 of all probes 20 contacts the photovoltaic glass 60, and all probes 20 can be displaced along their length.

[0032] Furthermore, multiple detection modules are provided, each corresponding to one of the probes 20. Each detection module is used to detect the displacement information of its corresponding probe 20. The processor 30 is communicatively connected to the detection modules and is used to determine, based on the displacement information, whether the side of the photovoltaic glass 60 in contact with the probe 20 is the front or the back.

[0033] After the photovoltaic glass 60 is transported to the inspection station, the robot arm places the front and back inspection device of the photovoltaic glass 60 on the surface of the photovoltaic glass 60, that is, the first end 21 of the probe 20 contacts the surface of the photovoltaic glass 60. All probes 20 are displaced in their length direction. The inspection module detects the displacement information of the probes 20 in their length direction. The processor 30 determines the front and back of the photovoltaic glass 60 based on the displacement information, which can improve the accuracy of the inspection.

[0034] Specifically, if the displacement of all probes 20 in their length direction is basically normal, the processor 30 determines that the side of the photovoltaic glass 60 that contacts the first end 21 of the probe 20 is the front side. If the displacement of the probe 20 in its length direction is abnormal, the processor 30 determines that the side of the photovoltaic glass 60 that contacts the first end 21 of the probe 20 is the back side.

[0035] It should be noted that the statement that the displacement of probe 20 along its length is essentially normal means that the second ends of all probes 20 are basically located on the same horizontal line. (See also...) Figure 5 An abnormal displacement of probe 20 in its length direction means that the second ends of all probes 20 are not completely on the same horizontal line. Here, the first end 21 and the second end of probe 20 are the two opposite ends of probe 20.

[0036] In one embodiment, the displacement information includes the number of probes 20 with abnormal displacement. It should be noted that abnormal displacement refers to abnormal displacement of probe 20 in its length direction.

[0037] Furthermore, the detection module includes a first sensor. The first sensor is located at the first end 21 of the probe 20 and is used to measure the pressure on the probe 20. The processor 30 can obtain the number of probes 20 with abnormal displacement based on all the pressure values.

[0038] Specifically, when the pressure value detected by the first sensor is greater than the preset pressure value, it indicates that the displacement of the probe 20 corresponding to the first sensor is abnormal and is counted. When the pressure value detected by the first sensor is less than or equal to the preset pressure value, it indicates that the displacement of the probe 20 corresponding to the first sensor is normal and is not counted.

[0039] When the number of probes 20 with abnormal displacement is less than a preset value, the processor 30 determines that the side of the photovoltaic glass 60 in contact with the probes 20 is the front. When the number of probes 20 with abnormal displacement is greater than or equal to the preset value, the processor 30 determines that the side of the photovoltaic glass 60 in contact with the probes 20 is the back. In this way, by detecting the number of probes 20 with abnormal displacement, the front and back of the photovoltaic glass 60 can be determined, which is convenient for inspection.

[0040] It should be noted that the preset value can be set according to the actual production situation. Optionally, the preset value is one-third of the number of probes 20.

[0041] In one embodiment, the displacement information also includes the amount of displacement of the probe 20 with displacement anomalies along its length. It is understood that the processor 30 is used to determine, based on the number and displacement of the probes 20 with displacement anomalies, whether the side of the photovoltaic glass 60 in contact with the probes 20 is the front or the back.

[0042] Furthermore, the detection module also includes a second sensor, optionally a displacement sensor, which is located at the second end of the probe 20. The photovoltaic glass front and back inspection device also includes a control module, which is communicatively connected to the first and second sensors. The control module is used to control the second sensor to measure the displacement of the probe 20 in its length direction when there is an abnormal displacement, based on the pressure value.

[0043] It should be noted that when the pressure value detected by the first sensor is greater than the preset pressure value, the controller activates the second sensor corresponding to the probe 20 with abnormal displacement to measure the displacement of the probe 20 in its length direction. When the pressure value detected by the first sensor is less than or equal to the preset pressure value, the second sensor does not activate. It can be understood that during the detection process, the first sensor is also used to trigger the activation of the second sensor; that is, the controller determines whether to activate the second sensor based on the pressure value detected by the first sensor.

[0044] Furthermore, if the number of probes 20 with abnormal displacement is less than a preset value, and the displacement of the probes 20 with abnormal displacement in their length direction is not within a preset range, then the processor 30 determines that the side of the photovoltaic glass 60 that is in contact with the probes 20 is the front side.

[0045] If the number of probes 20 with abnormal displacement is greater than or equal to a preset value, and the displacement of the probes 20 with abnormal displacement in their length direction is within a preset range, then the processor 30 determines that the side of the photovoltaic glass 60 that is in contact with the probes 20 is the back side.

[0046] It should be noted that the preset range can be set according to the embossing depth of the photovoltaic glass 60. Optionally, the preset range is 30μm to 70μm.

[0047] Since there may be foreign objects such as burrs and debris on the surface of the photovoltaic glass 60, the number and displacement of the probes 20 with abnormal displacement can be combined to determine whether the side of the photovoltaic glass 60 in contact with the probes 20 is the front or the back. This can avoid the influence of foreign objects on the surface of the photovoltaic glass 60 on the detection results and improve the accuracy of the detection.

[0048] In another embodiment, the processor 30 includes an information acquisition module, a coordinate transformation module, and an image generation module. The information acquisition module acquires the two-dimensional coordinates of all probes 20, the coordinate transformation module derives the three-dimensional coordinates based on the two-dimensional coordinates and displacement, and the image generation module constructs a three-dimensional model of the photovoltaic glass 60 based on the three-dimensional coordinates. Thus, using the three-dimensional model to determine whether the side of the photovoltaic glass 60 in contact with the probe 20 is the front or back is more intuitive and improves the accuracy of the detection results. Furthermore, the three-dimensional model can be stored for subsequent traceability.

[0049] Specifically, with Figure 4 For example, probes 20 are arranged in an array. A two-dimensional coordinate system is established with the top-left probe 20 as the origin, the row containing the top-left probe 20 as the X-axis, and the column containing the top-left probe 20 as the Y-axis. Since the distance between any two adjacent probes 20 is equal, the two-dimensional coordinates of each probe 20 can be quickly obtained. Simultaneously, based on the displacement of probes 20 with abnormal displacement along their length, the three-dimensional coordinates of each probe 20 can be obtained.

[0050] In one embodiment, see Figure 1 and Figure 5 The first end 21 is conical. Because the protrusions 61 on the back of the photovoltaic glass 60 are relatively small and their distribution is uncertain, the first end 21 is made conical. During testing, the conical part of the first end 21 contacts the front or back of the photovoltaic glass 60. When the probe 20 touches the protrusions 61 of the photovoltaic glass 60, there will be a noticeable displacement change. Of course, in other embodiments, the first end 21 can also be spherical.

[0051] In one embodiment, see Figure 2 The photovoltaic glass front and back inspection device also includes a resilient reset element 40. Multiple resilient reset elements 40 are provided, with at least one resilient reset element 40 corresponding to each probe 20. One end of the resilient reset element 40 is connected to the bracket 10, and the other end is connected to the probe 20. After inspection, the resilient reset element 40 can automatically reset the probe 20 connected to it.

[0052] Optionally, the elastic reset element 40 is a spring. The spring is sleeved on the probe 20 and disposed within the mounting hole 11. Thus, by sleeved on the probe 20, the probe 20 guides the movement of the spring, improving the stability of the spring's movement and ensuring that the spring can better drive the probe 20 to reset. Furthermore, housing the spring within the mounting hole 11 prevents external interference with the spring.

[0053] In one embodiment, see Figure 3 The photovoltaic glass front and back inspection device also includes connecting cables 50. Multiple connecting cables 50 are provided, each corresponding to one of the inspection modules, and all connecting cables 50 are communicatively connected to the processor 30. Thus, the inspection modules are wiredly connected to the processor 30 via the connecting cables 50. Of course, in other embodiments, the inspection modules can also be wirelessly connected to the processor 30.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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 device for detecting the front and back sides of photovoltaic glass, characterized in that, The photovoltaic glass (60) has a front side and a back side, the front side being a smooth surface and the back side being a rough surface. The photovoltaic glass front and back side detection device includes: The bracket (10) is provided with a plurality of mounting holes (11); Probes (20), multiple probes (20) are provided, and all probes (20) are correspondingly provided in all mounting holes (11). When the photovoltaic glass front and back detection device is placed on the photovoltaic glass (60), the first end (21) of all probes (20) is in contact with the photovoltaic glass (60), and all probes (20) can be displaced in their length direction. The detection module is provided in multiple ways, and each detection module is configured to correspond one-to-one with each of the probes (20). The detection module is used to detect the displacement information of the probe (20) to which it corresponds; and The processor (30) is communicatively connected to the detection module. The processor (30) is used to determine, based on the displacement information, whether the side of the photovoltaic glass (60) that contacts the first end (21) of the probe (20) is the front or the back.

2. The photovoltaic glass front and back inspection device according to claim 1, characterized in that, The displacement information includes the number of probes (20) with displacement anomalies; The detection module includes a first sensor located at the first end (21) of the probe (20). The first sensor is used to measure the pressure on the probe (20). The processor (30) is able to obtain the number of probes (20) with abnormal displacement based on all pressure values.

3. The photovoltaic glass front and back inspection device according to claim 2, characterized in that, The displacement information also includes the amount of displacement of the probe (20) in its length direction in case of displacement anomalies; The detection module also includes a second sensor, and the photovoltaic glass front and back detection device also includes a control module. The control module is communicatively connected to the first sensor and the second sensor. The control module is used to control the second sensor to measure the displacement of the probe (20) in its length direction when the displacement is abnormal, according to the pressure value.

4. The photovoltaic glass front and back inspection device according to claim 1, characterized in that, The displacement information includes the displacement of the probe (20) in its length direction when the displacement is abnormal; the detection module includes a first sensor and a second sensor, the first sensor is used to measure the pressure on the probe (20), the photovoltaic glass front and back detection device also includes a control module, the control module is communicatively connected to the first sensor and the second sensor, the control module is used to control the second sensor to measure the displacement of the probe (20) in its length direction when the displacement is abnormal according to the pressure value; The processor (30) includes an information acquisition module, a coordinate transformation module and an image generation module. The information acquisition module is used to acquire the two-dimensional coordinates of all the probes (20). The coordinate transformation module is used to derive the three-dimensional coordinates based on the two-dimensional coordinates and the displacement. The image generation module is used to construct a three-dimensional model of the photovoltaic glass (60) based on the three-dimensional coordinates.

5. The photovoltaic glass front and back inspection device according to claim 1, characterized in that, The photovoltaic glass front and back detection device also includes an elastic reset member (40). Multiple elastic reset members (40) are provided. Each probe (20) corresponds to at least one elastic reset member (40). One end of the elastic reset member (40) is connected to the probe (20), and the other end of the elastic reset member (40) is connected to the bracket (10). The elastic reset member (40) is used to drive the probe (20) connected to it to reset.

6. The photovoltaic glass front and back inspection device according to claim 5, characterized in that, The elastic reset element (40) is a spring, which is sleeved on the probe (20) and located in the mounting hole (11).

7. The photovoltaic glass front and back inspection device according to any one of claims 1 to 6, characterized in that, The first end (21) of the probe (20) is conical.

8. The photovoltaic glass front and back inspection device according to any one of claims 1 to 6, characterized in that, The first end (21) of the probe (20) is spherical.

9. The photovoltaic glass front and back inspection device according to any one of claims 1 to 6, characterized in that, All of the probes (20) are arranged in an array.

10. The photovoltaic glass front and back inspection device according to any one of claims 1 to 6, characterized in that, The photovoltaic glass front and back inspection device also includes a connecting cable (50), and there are multiple connecting cables (50). All the connecting cables (50) are connected to all the inspection modules one by one, and all the connecting cables (50) are connected to the processor (30); or, the inspection module is wirelessly connected to the processor (30).

Images