A method for automatic layout of a photovoltaic screen printing plate

Abstract

The present application relates to a kind of photovoltaic silk screen plate automatic layout method, it includes based on the size of the pattern to be laid out to photovoltaic silk screen cloth is fragmented shooting, obtain the photovoltaic silk screen cloth fragmented photo after fragmentation;The pattern to be laid out is fragmented, so that the pattern to be laid out after fragmentation and the photovoltaic silk screen cloth fragmented photo after fragmentation one-to-one correspondence;Each fragment in the pattern to be laid out is compared with its corresponding photovoltaic silk screen cloth fragmented photo one by one, obtain the line pressure adjustment range of each fragment in the pattern to be laid out;The intersection of the line pressure adjustment range of the fragment of all the pattern to be laid out is obtained, and the overall line pressure adjustment range of the pattern to be laid out is obtained;Based on the overall line pressure adjustment range of all the pattern to be laid out, the pattern to be laid out is laid out.The present application improves the efficiency of photovoltaic screen plate layout.

Description

Technical Field

[0001] This invention relates to the field of photovoltaic design technology, and in particular to a method for automatic layout of photovoltaic screen printing plates. Background Technology

[0002] Screen printing technology uses photosensitive materials to create a screen printing stencil through a photographic process. The mesh openings in the image areas of the stencil are open, while the openings in the non-image areas are blocked. During printing, ink or paste is forced through the mesh openings in the image areas onto the substrate by a squeegee, creating an image identical to the original artwork.

[0003] In the field of electrode printing for photovoltaic cells, there are grid lines on the pattern to be printed. The width of these grid lines is close to the diameter of the steel wires on the mesh. In order to avoid the grid lines from overlapping with the steel wires and thus failing to form through holes, it is necessary to align the drawing and the mesh through a layout method so that the grid lines avoid the steel wires.

[0004] To improve the success rate of layout, some steel wires are removed from the uniformly woven wire mesh, creating a non-uniform yarn-drawing area. The increased spacing between the steel wires at both ends of the yarn-drawing area reduces the risk of the inserted grid lines pressing against the yarn.

[0005] The width of the drawn thread area is usually only about 0.1 mm. In the existing technology, the layout of photovoltaic screen printing stencils is done by manually making the drawings into film, and then checking the layout by observing the overlap between the film and the mesh under a microscope.

[0006] Problems with existing technology: 1) It requires processing film for typesetting, leading to increased material consumption costs. 2) Manual operation is difficult to maintain consistently and in batches, resulting in low typesetting efficiency. Summary of the Invention

[0007] In view of this, it is necessary to provide a method, device, electronic equipment and medium for automatic layout of photovoltaic screen printing stencils to solve the problem of low efficiency caused by manual layout of photovoltaic screen printing stencils.

[0008] To address the above problems, this invention provides a method for automatic layout of photovoltaic screen printing stencils, comprising: The photovoltaic screen printing mesh is divided into pieces and photographed based on the size of the pattern to be printed, resulting in segmented photos of the photovoltaic screen printing mesh. The pattern to be laid out is divided into segments, so that the segmented pattern to be laid out corresponds one-to-one with the segmented photovoltaic screen printing mesh photograph. By comparing each segment of the pattern to be laid out with its corresponding photovoltaic screen printing mesh segment photo, the pressing line adjustment range of each segment of the pattern to be laid out is obtained. The intersection of the crease adjustment ranges of all the segments of the pattern to be laid out is taken to obtain the overall crease adjustment range of the pattern to be laid out. The pattern to be laid out is arranged based on the overall crease adjustment range of the pattern to be laid out.

[0009] In some possible implementations, the step of dividing the pattern to be laid out into segments, such that the segmented pattern to be laid out corresponds one-to-one with the segmented photovoltaic screen printing mesh photographs, includes: The pattern to be printed is aligned with the photovoltaic screen printing mesh based on the preset reference points on the photovoltaic screen printing mesh. The pattern to be laid out is obtained by using the horizontal and vertical spacing and size of the photovoltaic screen printing mesh slice photo to cut out the pattern to be laid out.

[0010] In some possible implementations, the creasing adjustment range is used to ensure that the grid lines in each segment of the pattern to be laid out are within the drawn yarn area of ​​their corresponding photovoltaic screen printing mesh segment photographs. The step of comparing each segment of the pattern to be laid out with its corresponding photovoltaic screen printing mesh segment photograph to obtain the creasing adjustment range for each segment of the pattern to be laid out includes: Each segment of the pattern to be laid out is matched one-to-one with the photovoltaic screen printing mesh segment photo according to the row and column number; The pressure adjustment range of each segment is the intersection of the pressure adjustment ranges of each gate line in that segment.

[0011] In some possible implementations, the preset reference point includes the center point of the photovoltaic screen printing mesh.

[0012] In some possible implementations, the pressure line adjustment range includes a translation adjustment range and a rotation adjustment range.

[0013] In some possible implementations, the translation adjustment range is between a first distance and a second distance, where the first distance is the distance between the grid line and the steel wire above its corresponding yarn-drawing area, and the second distance is the distance between the grid line and the steel wire below its corresponding yarn-drawing area.

[0014] In some possible implementations, the intersection of the line adjustment ranges of all the segments of the pattern to be laid out includes a first intersection and a second intersection. The first intersection is obtained by taking the intersection of the translation adjustment ranges of the line adjustment ranges of all the segments of the pattern to be laid out; the second intersection is obtained by taking the intersection of the rotation adjustment ranges of the line adjustment ranges of all the segments of the pattern to be laid out.

[0015] The beneficial effects of the above embodiments are as follows: The automatic layout method for photovoltaic screen printing stencils provided by the present invention first divides the photovoltaic screen printing mesh into sections based on the size of the pattern to be laid out, obtaining section photos of the photovoltaic screen printing mesh. Then, the pattern to be laid out is further divided into sections, so that the sectioned pattern corresponds one-to-one with the section photos of the photovoltaic screen printing mesh. Next, each section of the pattern to be laid out is compared with its corresponding section photo to obtain the creasing adjustment range of each section. Finally, the intersection of the creasing adjustment ranges of all sections of the pattern to be laid out is taken to obtain the overall creasing adjustment range of the pattern. Finally, the pattern to be laid out is based on the overall creasing adjustment range of all sections. The present invention improves the efficiency of photovoltaic screen printing stencil layout by dividing the photovoltaic screen printing mesh section photos into sections and corresponding them one-to-one with the pattern to be laid out, and by determining the overall creasing adjustment range based on the creasing adjustment range of all sections of the pattern. Attached Figure Description

[0016] Figure 1 This is a flowchart of an embodiment of a method for automatic layout of photovoltaic screen printing plates provided by the present invention; Figure 2 In one embodiment of the automatic layout method for photovoltaic screen printing stencils provided by the present invention, a segment of a photovoltaic screen printing mesh photograph is provided. Figure 3 In one embodiment of the automatic layout method for photovoltaic screen printing plates provided by the present invention, a segment of the pattern to be laid out is provided. Figure 4 In one embodiment of the automatic layout method for photovoltaic screen printing stencils provided by the present invention, a photovoltaic screen printing mesh photo segmentation and a pattern segmentation alignment diagram to be laid out are provided. Figure 5 The image shown is an example of the automatic layout method for photovoltaic screen printing plates provided by the present invention, after the pattern to be laid out has been adjusted into segments. Detailed Implementation

[0017] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0018] Figure 1 This is a schematic flowchart of an embodiment of the automatic layout method for photovoltaic screen printing plates provided by the present invention, as shown below. Figure 1 As shown, a method for automatic layout of photovoltaic screen printing plates includes: S101. Based on the size of the pattern to be laid out, the photovoltaic screen printing mesh is divided into pieces and photographed to obtain the divided photovoltaic screen printing mesh photographs. S102. Divide the pattern to be laid out into pieces so that the pieced pattern to be laid out corresponds one-to-one with the pieced photovoltaic screen printing mesh photograph. S103. Compare each segment of the pattern to be laid out with its corresponding photovoltaic screen printing mesh segment photo to obtain the pressing line adjustment range of each segment of the pattern to be laid out. S104. Take the intersection of the creasing adjustment ranges of all the segments of the pattern to be laid out to obtain the overall creasing adjustment range of the pattern to be laid out. S105. Arrange the pattern to be laid out based on the overall crease adjustment range of the pattern to be laid out.

[0019] Compared with existing technologies, the present invention provides an automatic layout method for photovoltaic screen printing stencils. First, the photovoltaic screen printing mesh is divided into segments based on the size of the pattern to be laid out, resulting in segmented photographs. The pattern to be laid out is further divided into segments, ensuring a one-to-one correspondence between the segmented pattern and the segmented photographs. Each segment of the pattern is then compared with its corresponding photograph to determine the seam adjustment range for each segment. The intersection of these seam adjustment ranges is then calculated to obtain the overall seam adjustment range for the pattern. Finally, the pattern is laid out based on this overall seam adjustment range. This invention improves the efficiency of photovoltaic screen printing stencil layout by creating a one-to-one correspondence between the photovoltaic screen printing mesh segment photographs and the pattern to be laid out, and by determining the overall seam adjustment range based on the seam adjustment ranges of all segments.

[0020] It should be noted that the existing manual layout process involves processing film according to the drawing data, with the film carrying mark points, placing the screen on the light-emitting platform, placing the film on the screen, manually observing the film and screen through an electron microscope, and finally aligning the pattern on the film with the blank area of ​​the screen, and then fixing the film with tape.

[0021] In some embodiments of the present invention, the step of dividing the pattern to be laid out into segments, such that the segmented pattern to be laid out corresponds one-to-one with the segmented photovoltaic screen printing mesh photographs, includes: The pattern to be printed is aligned with the photovoltaic screen printing mesh based on the preset reference points on the photovoltaic screen printing mesh. The pattern to be laid out is obtained by using the horizontal and vertical spacing and size of the photovoltaic screen printing mesh slice photo to cut out the pattern to be laid out.

[0022] In a specific embodiment of the present invention Figure 2In one embodiment of the automatic layout method for photovoltaic screen printing stencils provided by the present invention, a segment of a photovoltaic screen printing stencil photograph is obtained. In step S101, the photovoltaic screen printing stencil is divided into segments and photographed based on the size of the pattern to be laid out, resulting in segmented photographs of the photovoltaic screen printing stencil. Specifically: The total shooting size of the photovoltaic screen printing mesh is determined based on the size of the pattern to be laid out, and the total shooting size is not less than the size of the pattern to be laid out. The horizontal and vertical spacing and segment size are determined based on the total shooting size and the camera's horizontal and vertical field of view, so that the cumulative shooting range of all segments covers the total shooting size; Based on the segment spacing and segment size, the photovoltaic screen printing mesh is photographed sequentially in the horizontal and vertical directions to obtain segment photos of the mesh.

[0023] In step S102, the pattern to be laid out is divided into segments, so that the segmented pattern to be laid out corresponds one-to-one with the segmented photovoltaic screen printing mesh photographs. Specifically, this includes: The pattern to be printed is aligned with the photovoltaic screen printing mesh based on the preset reference points on the photovoltaic screen printing mesh. Using the same range, area, and fraction of the same image segment, the image to be typed is cropped to obtain the segments of the image to be typed.

[0024] In a specific embodiment of the present invention, the size of the pattern to be typed is 182mm. 182mm, camera field of view is 18.2mm. 12.6mm, segment size is 18.2. The lens is 12.6mm thick, with horizontal and vertical segment intervals of 17mm and 11mm, and the number of segments is 11 and 17 respectively. The actual shooting size is 187mm. 187mm.

[0025] In some embodiments of the present invention Figure 3 This invention provides a method for automatic layout of photovoltaic screen printing plates, in one embodiment of which is a segment of a pattern to be laid out. Figure 4 In one embodiment of the automatic layout method for photovoltaic screen printing stencils provided by the present invention, a photovoltaic screen printing stencil photo segment and a pattern segment alignment diagram to be laid out are provided.

[0026] In some embodiments of the present invention, the pressure line adjustment range is used to ensure that the grid lines in each segment of the pattern to be laid out are within the yarn-drawing area of ​​their corresponding photovoltaic screen printing mesh segment photographs. The step of comparing each segment of the pattern to be laid out with its corresponding photovoltaic screen printing mesh segment photograph to obtain the pressure line adjustment range for each segment of the pattern to be laid out includes: Each segment of the pattern to be laid out is matched one-to-one with the photovoltaic screen printing mesh segment photo according to the row and column number; The pressure adjustment range of each segment is the intersection of the pressure adjustment ranges of each gate line in that segment.

[0027] In some embodiments of the present invention, the preset reference point includes the center point of the photovoltaic screen printing mesh, which is the center of the rectangular area formed by the topmost and bottommost yarn-drawing areas on the mesh. It is understood that the reference point in the embodiments of the present invention is not limited to the center point alignment method, and other alignment methods may also be used.

[0028] In some embodiments of the present invention, the pressure line adjustment range includes a translation adjustment range and a rotation adjustment range.

[0029] In some embodiments of the present invention, the translation adjustment range is between a first distance and a second distance, wherein the first distance is the distance between the grid line and the steel wire above its corresponding yarn-drawing area, and the second distance is the distance between the grid line and the steel wire below its corresponding yarn-drawing area.

[0030] In some embodiments of the present invention, the intersection of the crease adjustment ranges of all the segments of the pattern to be laid out includes a first intersection and a second intersection. The first intersection is obtained by taking the intersection of the translation adjustment ranges of the crease adjustment ranges of all the segments of the pattern to be laid out; the second intersection is obtained by taking the intersection of the rotation adjustment ranges of the crease adjustment ranges of all the segments of the pattern to be laid out.

[0031] In a specific embodiment of the present invention, in step S105, the pattern to be laid out is arranged based on the overall crease adjustment range of the pattern to be laid out, specifically: the pattern to be laid out is arranged based on the intersection of the overall crease adjustment ranges of the pattern to be laid out.

[0032] In a specific embodiment of the present invention Figure 5 The image shown is an example of the automatic layout method for photovoltaic screen printing plates provided by the present invention, after the pattern to be laid out has been adjusted into segments.

[0033] It should be noted that, for ease of understanding Figure 2 , Figure 3 , Figure 4 and Figure 5 The diagram provided for this embodiment of the invention illustrates the segmentation process. It is understood that the adjustment method for each segment is the same. The final result is the adjustment of the entire pattern to be laid out and the segmented photograph of the photovoltaic screen printing mesh.

[0034] Those skilled in the art will understand that all or part of the processes of the methods described in the above embodiments can be implemented by a computer program instructing related hardware, and the program can be stored in a computer-readable storage medium. The computer-readable storage medium may be a disk, optical disk, read-only memory, or random access memory, etc.

[0035] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for automatic layout of photovoltaic screen printing plates, characterized in that, include: The photovoltaic screen printing mesh is divided into pieces and photographed based on the size of the pattern to be printed, resulting in segmented photos of the photovoltaic screen printing mesh. The pattern to be laid out is divided into segments, so that the segmented pattern to be laid out corresponds one-to-one with the segmented photovoltaic screen printing mesh photograph. By comparing each segment of the pattern to be laid out with its corresponding photovoltaic screen printing mesh segment photo, the pressing line adjustment range of each segment of the pattern to be laid out is obtained. The intersection of the crease adjustment ranges of all the segments of the pattern to be laid out is taken to obtain the overall crease adjustment range of the pattern to be laid out. The pattern to be laid out is arranged based on the overall crease adjustment range of the pattern to be laid out; The step of dividing the pattern to be laid out into segments, so that the segmented pattern to be laid out corresponds one-to-one with the segmented photovoltaic screen printing mesh photographs, includes: The pattern to be printed is aligned with the photovoltaic screen printing mesh based on the preset reference points on the photovoltaic screen printing mesh. The pattern to be laid out is obtained by using the horizontal and vertical spacing and size of the photovoltaic screen printing mesh slice photo to cut out the pattern to be laid out.

2. The method for automatic layout of photovoltaic screen printing plates according to claim 1, characterized in that, The pressure line adjustment range is used to ensure that the grid lines in each segment of the pattern to be laid out are within the yarn-drawing area of ​​their corresponding photovoltaic screen printing mesh segment photographs. The step of comparing each segment of the pattern to be laid out with its corresponding photovoltaic screen printing mesh segment photograph to obtain the pressure line adjustment range for each segment of the pattern to be laid out includes: Each segment of the pattern to be laid out is matched one-to-one with the photovoltaic screen printing mesh segment photo according to the row and column number; The pressure adjustment range of each segment is the intersection of the pressure adjustment ranges of each gate line in that segment.

3. The method for automatic layout of photovoltaic screen printing plates according to claim 1, characterized in that, The preset reference point includes the center point of the photovoltaic screen printing mesh.

4. The method for automatic layout of photovoltaic screen printing plates according to claim 2, characterized in that, The pressure line adjustment range includes translation adjustment range and rotation adjustment range.

5. The method for automatic layout of photovoltaic screen printing plates according to claim 4, characterized in that, The translation adjustment range is between a first distance and a second distance. The first distance is the distance between the grid line and the steel wire above its corresponding yarn-drawing area, and the second distance is the distance between the grid line and the steel wire below its corresponding yarn-drawing area.

6. The method for automatic layout of photovoltaic screen printing plates according to claim 5, characterized in that, The intersection of the crease adjustment ranges of all the segments of the pattern to be laid out includes a first intersection and a second intersection. The first intersection is obtained by taking the intersection of the translation adjustment ranges of the crease adjustment ranges of all the segments of the pattern to be laid out. The second intersection is obtained by taking the intersection of the rotation adjustment ranges of the crease adjustment ranges of all the segments of the pattern to be laid out.

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