Photovoltaic glass detection device

Abstract

The utility model relates to the field of photovoltaic technology, and provides a photovoltaic glass detection device which comprises a storage table, a light source, a first photosensitive layer and an image collector. Wherein the object placing table is used for placing photovoltaic glass, and the photovoltaic glass is provided with a fluffy surface and a flat surface which are oppositely arranged in the thickness direction; the light source is used for irradiating photovoltaic glass; the first photosensitive layer and the light source are arranged on the same side of the object placing table and are opposite to each other, and the first photosensitive layer is used for receiving reflected light of the photovoltaic glass; and the image collector is used for collecting an image of the first photosensitive layer after receiving the reflected light of the photovoltaic glass. The reflection image of the photovoltaic glass can be acquired according to the image acquisition device, and the surface type of the side, facing the light source, of the photovoltaic glass can be judged.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of photovoltaic, in particular to a photovoltaic glass detection device. BACKGROUND

[0002] In the production process of photovoltaic modules, transparent rolled glass is an important packaging material. The transparent rolled glass has a flat surface and a textured surface (also known as an embossed surface), the textured surface faces the battery piece and is laminated with the EVA packaging adhesive layer to form a module, the textured surface can strengthen the connection with the adhesive film and increase the exhaust, and part of the textured surface is provided with a white coating for reflection; the flat surface is coated with an anti-reflection coating to improve the sunlight transmission effect. Therefore, the photovoltaic glass must be correctly distinguished between the textured surface and the flat surface when it is laid, otherwise it will affect the performance of the photovoltaic module. CONTENT OF THE UTILITY MODEL

[0003] Based on this, the present application provides a photovoltaic glass detection device capable of detecting the flat surface and the textured surface of the photovoltaic glass.

[0004] The present application provides a photovoltaic glass detection device, which comprises:

[0005] A placement table is used to place the photovoltaic glass, and the photovoltaic glass has a textured surface and a flat surface arranged opposite along the thickness direction.

[0006] A light source is used to irradiate the photovoltaic glass.

[0007] A first photosensitive layer is arranged on the same side of the placement table as the light source and opposite to the light source, and is used to receive the reflected light of the photovoltaic glass.

[0008] In addition, an image collector is used to collect the image of the first photosensitive layer after receiving the reflected light of the photovoltaic glass.

[0009] In some embodiments, the photovoltaic glass detection device further comprises a plurality of first light intensity detectors arranged on the first photosensitive layer, and the first light intensity detectors are used to detect the intensity of the reflected light of the photovoltaic glass.

[0010] In some embodiments, the plurality of first light intensity detectors are arranged in a matrix on the first photosensitive layer.

[0011] In some embodiments, the photovoltaic glass detection device further comprises a light source mover connected with the light source, and the light source mover is used to adjust the position of the light source.

[0012] In some embodiments, the photovoltaic glass detection device further comprises a sealed box, the object table, the light source and the first photosensitive layer are arranged in the sealed box, and the sealed box is used for preventing ambient light from irradiating the photovoltaic glass, the light source and the first photosensitive layer.

[0013] In some embodiments, the object table comprises a frame, the photovoltaic glass is arranged on the frame, and the light generated by the light source can irradiate the other side of the object table through the photovoltaic glass.

[0014] In some embodiments, the photovoltaic glass detection device further comprises a second photosensitive layer arranged on the side of the object table opposite to the first photosensitive layer, and used for receiving the transmitted light of the photovoltaic glass.

[0015] In some embodiments, the photovoltaic glass detection device further comprises a plurality of second light intensity detectors arranged on the second photosensitive layer, and used for detecting the intensity of the transmitted light of the photovoltaic glass.

[0016] In some embodiments, the photovoltaic glass detection device further comprises a control mechanism electrically connected with the image collector, the control mechanism is used for receiving the image collected by the image collector, and comparing the image with a preset image to determine the surface type of the side of the photovoltaic glass facing the light source.

[0017] In some embodiments, the photovoltaic glass detection device further comprises a display electrically connected with the control mechanism, and used for displaying the image collected by the image collector; and / or,

[0018] The photovoltaic glass detection device further comprises an alarm electrically connected with the control mechanism, and used for alarming that the image collected by the image collector is different from the preset image.

[0019] Compared with the prior art, the present application has at least the following beneficial effects:

[0020] The present application receives the reflected light of the photovoltaic glass by the first photosensitive layer, and collects the light spot image formed by the reflected light of the photovoltaic glass on the first photosensitive layer by the image collector, and determines whether the surface of the photovoltaic glass facing the light source is a flat surface or a textured surface through the collected light spot image. When the first photosensitive layer presents irregular shape and specific brightness distribution and other characteristics, it is the textured surface of the photovoltaic glass; when the first photosensitive layer presents relatively regular and uniform brightness distribution and other characteristics, it is the flat surface of the photovoltaic glass. The present application realizes the detection of the flat surface and the textured surface of the transparent glass by image collection of the reflected light of the photovoltaic glass, thereby avoiding the problem of photovoltaic glass installation in reverse in the assembly process of the photovoltaic module. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of a photovoltaic glass testing device provided in one embodiment of this application.

[0022] Among them, 1-Placement platform; 2-Photovoltaic glass; 3-Light source; 4-First photosensitive layer; 5-Image acquisition device; 6-First light intensity detector; 7-Sealed box; 8-Second photosensitive layer; 9-Second light intensity detector. Detailed Implementation

[0023] The present application will be further described in detail below with reference to the accompanying drawings, embodiments, and examples. These embodiments and examples are for illustrative purposes only and are not intended to limit the scope of the present application. The purpose of providing these embodiments and examples is to enable a more thorough and comprehensive understanding of the disclosure of the present application. It should also be understood that the present application can be implemented in many different forms and is not limited to the embodiments and examples described herein. Those skilled in the art can make various modifications or alterations without departing from the spirit of the present application, and the equivalent forms obtained also fall within the protection scope of the present application. Furthermore, numerous specific details are set forth in the following description to provide a fuller understanding of the present application. It should be understood that the present application can be implemented without one or more of these details.

[0024] It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this application.

[0025] In the description of this application, unless otherwise expressly specified and limited, the terms "connected," "linked," "fixed," and "set" 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. Those skilled in the art can understand the meaning of the above terms in this application according to the specific circumstances.

[0026] In this application, "optionally," "optionally," and "optional" mean that something is optional, that is, it means that it is selected from either "with" or "without." If there are multiple "optional" entries in a technical solution, unless otherwise specified, and there are no contradictions or mutual constraints, each "optional" entry shall be independent.

[0027] In this application, the technical features described in an open-ended manner include both closed technical solutions consisting of the listed features and open technical solutions that include the listed features.

[0028] In this application, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or quantity, nor should they be construed as implicitly indicating the importance or quantity of the indicated technical features. Moreover, "first," "second," etc., serve only as a non-exhaustive enumeration and should be understood not to constitute a closed limitation on quantity.

[0029] All references to this application are incorporated herein by reference as if each document were individually incorporated herein by reference. Unless they conflict with the purpose and / or technical solution of this application, all cited references are incorporated herein by reference in their entirety and for all purposes. When references are cited in this application, the definitions of relevant technical features, terms, nouns, phrases, etc., are also incorporated herein by reference. Examples and preferred embodiments of the cited technical features may also be incorporated herein by reference, but only to the extent that they enable the implementation of this application. It should be understood that when the cited content conflicts with the description in this application, this application shall prevail or modifications shall be made adaptably to the description in this application.

[0030] In traditional technology, high-resolution cameras are used to inspect laminates to avoid defects. However, for transparent photovoltaic glass, cameras can only detect whether there are stains on the surface, but cannot detect the front and back of the photovoltaic glass (i.e., flat surface and textured surface). If the photovoltaic glass is reversed during the lamination process, it will lead to the scrapping of a large number of products.

[0031] Based on this, this application provides a photovoltaic glass testing device, such as... Figure 1 As shown, the photovoltaic glass testing device includes a platform 1, a light source 3, a first photosensitive layer 4, and an image acquisition device 5.

[0032] The system includes a platform 1 for placing photovoltaic glass 2, which has a textured surface and a flat surface arranged opposite each other along its thickness direction. A light source 3 illuminates the photovoltaic glass 2. A first photosensitive layer 4 is located on the same side of the platform 1 as the light source 3 and is positioned opposite to the light source 3. The first photosensitive layer 4 receives reflected light from the photovoltaic glass 2. An image acquisition device 5 is positioned above the platform 1 and is used to acquire an image of the first photosensitive layer 4 after receiving reflected light from the photovoltaic glass 2.

[0033] This application utilizes a first photosensitive layer 4 to receive reflected light from photovoltaic glass 2, and uses an image acquisition device 5 to acquire images of light spots formed by the reflected light from photovoltaic glass 2 on the first photosensitive layer 4. The acquired light spot images are used to determine whether the surface of photovoltaic glass 2 facing the light source 3 is a flat surface or a textured surface. Specifically, if the first photosensitive layer 4 exhibits irregular shapes and specific brightness distributions, it is considered a textured surface of photovoltaic glass 2; if the first photosensitive layer 4 exhibits relatively regular shapes and uniform brightness distributions, it is considered a flat surface of photovoltaic glass 2. This application achieves the detection of flat and textured surfaces of transparent glass by acquiring images of the reflected light from photovoltaic glass 2, thus avoiding problems such as the photovoltaic glass 2 being installed backwards during the assembly of photovoltaic modules.

[0034] It should be noted that during the lamination process, the textured surface of the photovoltaic glass 2 faces the solar cell, thus bonding and laminating it with the EVA encapsulation to form the module. The textured surface enhances the stability of the connection with the encapsulant film and improves air permeability. Furthermore, the textured surface can be coated with a reflective coating. The flat surface, on the other hand, is away from the solar cell and is typically coated with an anti-reflective coating to improve the transmission effect to optical fibers.

[0035] In some embodiments, the light source is positioned above the photovoltaic glass and projected onto the outside of the photovoltaic glass, so that the generated light is obliquely directed onto the photovoltaic glass, thereby increasing the brightness of the light spot.

[0036] In some embodiments, the first photosensitive layer 4 can be a screen that clearly shows the brightness of light, thereby improving the image clarity of the image acquisition device 5. Furthermore, the image acquisition device 5 can be a high-resolution camera.

[0037] In some embodiments, such as Figure 1 As shown, the photovoltaic glass inspection device also includes multiple first light intensity detectors 6, which are disposed on the first photosensitive layer 4. The first light intensity detectors 6 are used to detect the intensity of reflected light from the photovoltaic glass 2. Optionally, the multiple first light intensity detectors 6 are arranged in a matrix on the first photosensitive layer 4. By setting the first light intensity detectors 6 on the first photosensitive layer 4, this application can assist in judging the accuracy of image results based on the intensity of reflected light. For example, under the same illumination intensity, the reflected light intensity of the flat surface of the photovoltaic glass 2 is less than that of the textured surface.

[0038] In some embodiments, the photovoltaic glass inspection device further includes a light source mover (not shown in the figure), which is connected to the light source 3 and is used to adjust the position of the light source 3. This application adjusts the position of the light source 3, thereby adjusting the incident angle of the light, so that a clear light spot image is formed on the first photosensitive layer 4, to meet the usage requirements of different types of photovoltaic glass 2 and improve the inspection accuracy.

[0039] In some embodiments, such as Figure 1 As shown, the photovoltaic glass testing device also includes a sealed box 7. The stage 1, the light source 3, and the first photosensitive layer 4 are all housed inside the sealed box 7. The sealed box 7 is used to prevent ambient light from shining on the photovoltaic glass 2, the light source 3, and the first photosensitive layer 4. It is understandable that when the ambient light does not change significantly during the test, i.e., the ambient light does not affect the light spot image on the first photosensitive layer 4, the sealed box 7 is not necessary. However, when the ambient light changes significantly, it is necessary to seal all components in the sealed box 7 to prevent changes in ambient light from affecting the accuracy of the test.

[0040] In some embodiments, the shelf 1 includes a frame, the photovoltaic glass 2 is mounted on the frame, and the light generated by the light source 3 can shine through the photovoltaic glass 2 to the other side of the shelf 1.

[0041] In some embodiments, the photovoltaic glass testing device further includes a second photosensitive layer 8, which is disposed on the side of the platform 1 away from the first photosensitive layer 4, and is used to receive the transmitted light from the photovoltaic glass 2. Optionally, the second photosensitive layer 8 may also be a screen.

[0042] In some embodiments, the photovoltaic glass testing device further includes a plurality of second light intensity detectors 9, which are disposed on the second photosensitive layer 8 and used to detect the intensity of transmitted light from the photovoltaic glass 2. Since the light transmittance of the flat surface and the textured surface of the photovoltaic glass 2 are different, a photovoltaic glass 2 with a known surface can be used as a benchmark to test the intensity range of transmitted light when the flat surface of the photovoltaic glass 2 faces the light source 3, and the intensity range of transmitted light when the textured surface of the photovoltaic glass 2 faces the light source 3, respectively, as a criterion for judging the light intensity when different surfaces face the light source 3.

[0043] This application sets the platform 1 as a frame structure with a hollow center, so that the light shining on the photovoltaic glass 2 can pass through the photovoltaic glass 2 and shine on the second photosensitive layer 8. The intensity of the light transmitted by the photovoltaic glass 2 is detected by the second light intensity detector 9. Since the light reflection of the two sides of the photovoltaic glass 2 is different, the transmitted light of the photovoltaic glass 2 on different surfaces is different, which can be used to help determine the surface type of the photovoltaic glass 2.

[0044] In some embodiments, the photovoltaic glass testing device further includes a control mechanism (not shown in the figure). The control mechanism is electrically connected to the image acquisition unit 5 and is used to receive images acquired by the image acquisition unit 5 and compare them with preset images to determine the surface type of the photovoltaic glass 2 facing the light source 3. It is understood that the preset image can be based on the light spot image reflected from the textured surface and the flat surface of the photovoltaic glass 2, and different preset images can be set according to different surfaces being tested. For example, a known photovoltaic glass 2 can be placed on the platform 1 beforehand, and after being illuminated by the light source 3, preset images of the flat surface and the textured surface can be acquired respectively, thereby setting preset images according to testing needs.

[0045] In some embodiments, the photovoltaic glass detection device further includes a display (not shown), which is electrically connected to the control mechanism and is used to display images acquired by the image acquisition device 5.

[0046] In some embodiments, the photovoltaic glass detection device further includes an alarm (not shown in the figure), which is electrically connected to the control mechanism and is used to alarm that the image acquired by the image acquisition device 5 is different from a preset image. In this application, the image acquired by the image acquisition device 5 is different from the preset image, that is, the surface facing the light source 3 is inconsistent with the surface to be detected.

[0047] Exemplarily, a method for detecting the textured surface and flat surface of photovoltaic glass 2 using the aforementioned photovoltaic glass inspection device is provided, comprising the following steps:

[0048] The photovoltaic glass 2 is transferred to the platform 1, and the light source 3 is turned on to illuminate the photovoltaic glass 2.

[0049] Image acquisition device 5 acquires images of light spots reflected on the first photosensitive layer 4, while the first light intensity detector 6 detects the light intensity of the light reflected from the photovoltaic glass 2 and the second light intensity detector 9 detects the light intensity of the light projected from the photovoltaic glass 2.

[0050] In the control mechanism, a known flat surface light spot image is used as a preset image to detect whether the flat surface of the photovoltaic glass 2 is facing upwards. When the acquired light spot image is consistent with the preset image, and the light intensity parameters of the first light intensity detector 6 and the second light intensity detector 9 are both within the standard range, then the flat surface of the photovoltaic glass 2 is facing upwards. When the acquired light spot image is inconsistent with the preset image, an alarm is issued, indicating that the velvety surface of the photovoltaic glass 2 is facing upwards. When the acquired light spot image is consistent with the preset image, but at least one of the light intensity parameters of the first light intensity detector 6 and the second light intensity detector 9 is not within the standard range, the control mechanism can record the photovoltaic glass 2 or issue an alarm to rule out whether the test results are deviated due to changes in ambient light.

[0051] In summary, this application utilizes the first photosensitive layer 4 to receive the reflected light from the photovoltaic glass 2, and uses an image acquisition device 5 to acquire images of the light spots formed by the reflected light from the photovoltaic glass 2 on the first photosensitive layer 4. The acquired light spot images are used to determine whether the surface of the photovoltaic glass 2 facing the light source 3 is a flat surface or a textured surface. Specifically, if the first photosensitive layer 4 exhibits irregular shapes and specific brightness distributions, it is considered a textured surface of the photovoltaic glass 2; if the first photosensitive layer 4 exhibits relatively regular shapes and uniform brightness distributions, it is considered a flat surface of the photovoltaic glass 2. This application achieves the detection of flat and textured surfaces of transparent glass by acquiring images of the reflected light from the photovoltaic glass 2, thus avoiding problems such as the photovoltaic glass 2 being installed backwards during the assembly of photovoltaic modules.

[0052] 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.

[0053] The above embodiments are merely illustrative of several implementation methods of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the 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 application should be determined by the appended claims.

Claims

1. A photovoltaic glass testing device, characterized in that, The photovoltaic glass testing device includes: A shelf (1) is used to place photovoltaic glass (2), the photovoltaic glass (2) having a velvety surface and a flat surface arranged opposite each other along the thickness direction; Light source (3), the light source (3) is used to illuminate the photovoltaic glass (2); The first photosensitive layer (4) and the light source (3) are disposed on the same side of the platform (1) and opposite to the light source (3). The first photosensitive layer (4) is used to receive the reflected light from the photovoltaic glass (2). And an image acquisition device (5), which is used to acquire an image of the first photosensitive layer (4) after receiving the reflected light from the photovoltaic glass (2).

2. The photovoltaic glass testing device as described in claim 1, characterized in that, The photovoltaic glass detection device also includes a plurality of first light intensity detectors (6), which are disposed on the first photosensitive layer (4) and are used to detect the intensity of the reflected light of the photovoltaic glass (2).

3. The photovoltaic glass testing device as described in claim 2, characterized in that, Multiple first light intensity detectors (6) are arranged in a matrix on the first photosensitive layer (4).

4. The photovoltaic glass testing device as described in claim 1, characterized in that, The photovoltaic glass testing device also includes a light source mover, which is connected to the light source (3) and is used to adjust the position of the light source (3).

5. The photovoltaic glass testing device as described in claim 1, characterized in that, The photovoltaic glass testing device also includes a sealed box (7), in which the platform (1), the light source (3) and the first photosensitive layer (4) are all disposed. The sealed box (7) is used to prevent ambient light from shining on the photovoltaic glass (2), the light source (3) and the first photosensitive layer (4).

6. The photovoltaic glass testing device according to any one of claims 1-5, characterized in that, The shelf (1) includes a frame, the photovoltaic glass (2) is mounted on the frame, and the light generated by the light source (3) can shine through the photovoltaic glass (2) to the other side of the shelf (1).

7. The photovoltaic glass testing device as described in claim 6, characterized in that, The photovoltaic glass testing device further includes a second photosensitive layer (8), which is disposed on the side of the platform (1) away from the first photosensitive layer (4) and is used to receive the transmitted light from the photovoltaic glass (2).

8. The photovoltaic glass testing device as described in claim 7, characterized in that, The photovoltaic glass detection device also includes a plurality of second light intensity detectors (9), which are disposed on the second photosensitive layer (8) and are used to detect the intensity of transmitted light of the photovoltaic glass (2).

9. The photovoltaic glass testing device as described in claim 8, characterized in that, The photovoltaic glass detection device also includes a control mechanism, which is electrically connected to the image acquisition device (5). The control mechanism is used to receive the image acquired by the image acquisition device (5) and compare it with a preset image to determine the surface type of the photovoltaic glass (2) facing the light source (3).

10. The photovoltaic glass testing device as described in claim 9, characterized in that, The photovoltaic glass testing device further includes a display, which is electrically connected to the control mechanism and is used to display images acquired by the image acquisition device (5); and / or, The photovoltaic glass detection device also includes an alarm, which is electrically connected to the control mechanism and is used to alarm that the image acquired by the image acquisition device (5) is different from the preset image.

Images