An automatic measurement method for full-tab size based on ceramic edge fusion process
By combining automatic measurement programs and tools, the problem of blurred boundaries after ceramic melting was solved, realizing automatic measurement of all tab electrodes, improving detection accuracy and efficiency, and adapting to various coating modes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHENGZHOU BAK BATTERY CO LTD
- Filing Date
- 2026-04-17
- Publication Date
- 2026-06-05
AI Technical Summary
Existing technologies cannot automatically capture the edges after ceramic melting, resulting in blurred boundaries and low measurement efficiency and accuracy, which cannot meet the precise detection requirements of all tab electrodes.
An automatic measurement program-based method is adopted, utilizing line-following tools, point-finding tools, straight-line construction tools, measurement parameter modifiers, and line distance construction tools. By establishing a physical coordinate system, clear imaging, setting breakpoints, and adjusting measurement parameters, the automatic measurement of all tab electrodes is achieved.
It enables automatic measurement of all tab electrodes, improving measurement accuracy and efficiency, adapting to multiple coating patterns and different tolerance zones, and meeting the batch testing needs of production lines.
Smart Images
Figure CN122149322A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of total tab size measurement technology, specifically a method for automatic measurement of total tab size based on ceramic edge melting process. Background Technology
[0002] During the rapid development of new energy, the all-tab battery technology has gradually emerged in the industry. The electrode structure at this stage differs from intermittent single-coating. All-tab electrodes employ multi-coating with strict tolerance requirements for electrode width, ceramic layer width, material area width, fusion zone width, and foil width. Current electrode size inspection methods often use steel rulers, film rulers, and projectors, but these suffer from insufficient testing accuracy, inability to produce clear images, or inability to identify the boundaries between multiple coating layers. While image processing instruments can be used for electrode size inspection, their testing accuracy meets requirements and can achieve automatic testing when the ceramic and slurry are not fused, when they are fused, considering that the ceramic slurry is white and the positive electrode active slurry is black, the fusion edge becomes blurred after they mix, making automatic edge detection impossible under testing instruments. Furthermore, while the boundary (material edge) where the positive electrode active slurry begins to coat is visually distinguishable under testing instruments, the instruments cannot directly detect the edge, resulting in low overall testing efficiency.
[0003] Based on this, we now provide an automatic measurement method for the dimensions of all tabs based on ceramic edge melting technology, which can eliminate the drawbacks of existing technical solutions. Summary of the Invention
[0004] The purpose of this invention is to provide an automatic measurement method for the dimensions of all tabs based on ceramic edge melting process, so as to solve the problems of blurred boundaries after ceramic edge melting, inability to automatically grasp the edge, low measurement efficiency, and poor accuracy in the background technology.
[0005] To achieve the above objectives, the present invention provides the following technical solution: An automatic measurement method for the dimensions of all tabs based on ceramic edge melting technology is implemented using an automatic measurement program. This program employs a line-following tool, a point-finding tool, a straight-line construction tool, a measurement parameter modifier, and a line distance construction tool. Specifically, it includes the following steps: Step S1: Based on the tolerance zone of the total tab electrode test size, select the magnification of the image instrument so that the effective field of view of the image display is greater than 3 times the tolerance zone of the test size. Establish a physical coordinate system in the test area of the image instrument using a transparent plate and determine the positioning origin and positioning angle. Step S2: Develop an automatic measurement program based on the magnification of the imager and the physical coordinate system. Select a point on one side of the positioning origin, use this point as the reference point and construct a test coordinate system to complete the testing and positioning of the full electrode sheet. Step S3: Use the line edge-tracking tool to grab the edge foil on one side of the full-tab electrode sheet, turn on the bottom light, make the edge foil clear and the color difference obvious with the surrounding area, and complete the edge-tracking operation. Step S4: Use the line edge-tracking tool to capture the non-fused ceramic edge on the same side as the edge foil in step S3, turn on the surface light and bottom light to make the non-fused ceramic edge clear and obvious in color difference from the surrounding area, and complete the edge-tracking operation. Step S5: Turn on the front light and the bottom light. When the image is clear, use the point finding tool to pick up at least two feature points on the material edge on the same side. Use the line construction tool to click on the feature points to complete the material edge grabbing operation. Step S6: Turn on the front light and the bottom light. When the image is clear, use the point finding tool to pick up at least two feature points on the ceramic fusion edge on the same side. Use the line construction tool to click on the feature points to complete the ceramic fusion edge grabbing operation. Step S7: Following the sequence of Step S6, Step S5, Step S4, and Step S3, perform the following operations in sequence: ceramic fusion edge gripping, material edge gripping, ceramic non-fusion edge inspection, and edge foil edge inspection on the other side of the full electrode tab to form a complete electrode test line group. Step S8: Set breakpoints for all picked feature points and grabbed edges, manually confirm and correct parameters using the measurement parameter modifier, and then use the line distance construction tool to calculate foil width, material width, ceramic width, and the fusion width of ceramic and material to achieve automatic measurement of all tab dimensions.
[0006] Furthermore, in step S1, the magnification of the imager is 30 to 50 times.
[0007] Furthermore, in step S1, the distance between the positioning origin and the four edges of the test platform is greater than 2cm. The transparent plate forms a right angle with the positioning origin in the X-axis and Y-axis directions and extends to form a positioning angle. The extension length in the X-axis and Y-axis directions is greater than 5cm.
[0008] Furthermore, step S1 also includes: if the dimensional tolerance zone of a single test is different, then the effective field of view width of the image display is made to be greater than 3 times the maximum test dimensional tolerance zone.
[0009] Furthermore, the line-following tool is used to generate a rectangular recognition box, and the first gray value variation boundary in the direction of the arrow search of the rectangular recognition box is taken as the test edge to be captured. The gray value difference of the test edge is greater than 45, and the edge-following direction is from the side without color difference interference to the side with color difference blemishes.
[0010] Furthermore, the point-finding tool is used to select any feature point in the test edge, and the line-constructing tool is used to construct the test edge based on the principle that two points form a line. When the point-finding tool selects two feature points, it works in conjunction with the line-constructing tool to perform the test edge grabbing operation.
[0011] Furthermore, the measurement parameter modifier is used to adjust the measurement parameters and brightness, thereby increasing the difference in image grayscale values.
[0012] Furthermore, the line distance construction tool is used to test the vertical distance of a straight line, and the output is the foil width, material width, ceramic width, and ceramic-material fusion width on the left and right sides.
[0013] Furthermore, step S8 specifically includes: after forming a complete electrode test line group, setting breakpoints for the feature points and edges to realize the interruption confirmation of each step; if the edge inspection result is incorrect, adjusting the measurement parameters and brightness through the measurement parameter modifier to increase the difference in imaging grayscale values until the edge inspection result is correct, and then continuing to use the line distance construction tool to perform vertical distance calculation operation.
[0014] Furthermore, it also includes: storing steps S2 to S8 into an automatic measurement program to achieve repeated testing of electrode sheets of the same specification.
[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention effectively solves the problem of blurred boundaries and inability to automatically grasp edges after ceramic melting, achieving fully automatic measurement of foil width, material width, ceramic width, and the width of ceramic-material fusion. It shortens the inspection cycle and is compatible with multiple coatings and different tolerance zones, improving measurement stability and data consistency. The automatic measurement program can be written once and called multiple times, with low switching costs, meeting the batch inspection needs of production lines. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the method steps of the present invention.
[0017] Figure 2 This is a schematic diagram illustrating the establishment of the physical coordinate system according to the present invention.
[0018] Figure 3 This is a schematic diagram of the line-following edge recognition frame of the present invention.
[0019] Figure 4 This is a schematic diagram of the point finding and straight line construction method of the present invention.
[0020] Figure 5 This is a schematic diagram of the measurement parameter modifier of the present invention.
[0021] Figure 6 This is a schematic diagram of the single-coat application method of the present invention.
[0022] Figure 7 This is a schematic diagram of the edge-following process of the edge foil material according to the present invention.
[0023] Figure 8This is a schematic diagram of the ceramic non-fusion edge patrolling method of the present invention.
[0024] Figure 9 This is a schematic diagram of the ceramic fusion edge gripping method of the present invention.
[0025] Figure 10 This is a schematic diagram showing the completed line distance construction tool of the present invention.
[0026] Figure 11 This is a schematic diagram of the single-coating process of the present invention.
[0027] Figure label annotations: 1. Left edge foil; 2. Left non-fused ceramic edge; 3. Left material edge; 4. Left fused ceramic edge; 5. Right fused ceramic edge; 6. Right material edge; 7. Right non-fused ceramic edge; 8. Right edge foil; 9. Foil; 10. Positive electrode active slurry area; 11. Ceramic slurry. Detailed Implementation
[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments.
[0029] Considering the problems of blurred boundaries after ceramic fusion, inability to automatically grasp edges, low measurement efficiency, and poor accuracy in existing technologies, this invention selects the lens magnification based on the product design tolerance, ensuring that the width and length of the video display field of view are greater than the product tolerance zone, thus achieving clear imaging. Based on this, an automatic measurement program for the image instrument is developed, constructing a physical coordinate system. Utilizing the image instrument's programming function and combining it with the imaging of the test product, point, line, and spacing combinations are programmed, and interruption judgment is added to achieve automatic testing under the ceramic-material fusion process, improving testing speed and accuracy. Breakpoints are set for each test edge to avoid repeated testing due to edge grasping errors, effectively improving dimensional testing speed and meeting the dimensional testing needs of different process modes for all tabs. The specific technical solution is shown below.
[0030] like Figures 1-5 As shown, this invention provides an automatic measurement method for the dimensions of all tabs based on ceramic edge melting technology. This method is implemented using an automatic measurement program, which employs a line-following tool, a point-finding tool, a straight-line construction tool, a measurement parameter modifier, and a line distance construction tool. Specifically, it includes the following steps: Step S1: Based on the dimensional tolerance zone of the full-tab electrode sheet test, select the magnification of the image instrument so that the effective field of view of the image display is greater than 3 times the dimensional tolerance zone of the test. If the dimensional tolerance zone of a single test is different, the effective field of view of the image display should be greater than 3 times the maximum dimensional tolerance zone of the test. In the test area of the image instrument, a physical coordinate system is established using a transparent plate to determine the positioning origin and positioning angle. The distance from the positioning origin to the four edges of the test platform is greater than 2cm. The transparent plate forms a right angle in the X-axis and Y-axis directions of the positioning origin and extends to form the positioning angle. The extension length in the X-axis and Y-axis directions is greater than 5cm. Specifically, considering the diversity of processes, the coating switching and machine adjustment process, and the compatibility of the image instrument program and light adjustment, the effective field of view of the image display is usually selected to be greater than 3 times the tolerance band of the test size. If the tolerance band of a single test size is different, the effective field of view of the image display is selected to be greater than 3 times the tolerance band of the maximum test size. Assuming that the maximum tolerance band is 1mm, a magnification of less than 50 times should be selected. The magnification of the image instrument is preferably 30 to 50 times, as shown in Table 1 below. Table 1 - Schematic diagram of imager magnification and axial width Magnification Axial 30.26 34.6 50 80.2 100.2 150 X-axis field of view width 4.21 4.00 3.19 2.08 1.97 1.57 Y-axis field of view width 3.18 3.03 2.42 1.56 1.21 1.17 Specifically, a physical coordinate system is established: Using a transparent sheet such as acrylic, a suitable test starting point—the positioning origin—is selected within the test area based on the product dimensions. This origin is used for rapid edge tracing in the automatic measurement program. The transparent sheet forms a right angle with the positioning origin along the X and Y axes, with an extension length >5cm, preferably 5cm~10cm, forming a positioning angle. The selection criteria for the positioning origin are: the distance from the positioning origin to the four edges (left, right, top, and bottom) of the X and Y axis test plane must be >2cm to avoid the lead screw getting stuck at the edge of the test platform, causing distortion of the test results. Furthermore, the distance between the origin after forming the positioning angle and the test boundaries along the X and Y axes must be greater than the length and width of the test object. Additionally, the formed positioning angle must facilitate the operator's handling of the test object. Based on these requirements, a suitable positioning origin is selected, and a physical coordinate system is established. Figure 2 As shown; Step S2: Develop an automatic measurement program based on the magnification of the image instrument and the physical coordinate system. Select a point on one side of the positioning origin, use this point as the reference point and construct a test coordinate system to complete the testing and positioning of the full electrode tab. Step S3: Use the line edge-tracking tool to grab the edge foil on one side of the full-tab electrode sheet, turn on the bottom light, make the edge foil clear and the color difference obvious with the surrounding area, and complete the edge-tracking operation. Step S4: Use the line edge-tracking tool to capture the non-fused ceramic edge on the same side as the edge foil in step S3, turn on the surface light and bottom light to make the non-fused ceramic edge clear and obvious in color difference from the surrounding area, and complete the edge-tracking operation. Specifically, such as Figure 3As shown, the line-following tool is used to generate a rectangular recognition box. The first gray value variation boundary in the direction of the arrow of the rectangular recognition box is taken as the test edge to be captured. The gray value difference of the test edge is greater than 45. The edge-following direction is from the side without color difference interference to the side with color difference blemishes. Step S5: Turn on the front light and the bottom light. When the image is clear, use the point finding tool to pick up at least two feature points on the material edge on the same side. Use the line construction tool to click on the feature points to complete the material edge grabbing operation. Step S6: Turn on the front light and the bottom light. When the image is clear, use the point finding tool to pick up at least two feature points on the ceramic fusion edge on the same side. Use the line construction tool to click on the feature points to complete the ceramic fusion edge grabbing operation. Specifically, considering that the boundary where the positive electrode active slurry begins to be coated (called the material edge) and the fusion edge between the ceramic and the material can be visually distinguished under testing instruments such as an image analyzer, but the rectangular recognition box cannot find the variation boundary when the line tracking tool is selected, the gray value difference does not meet the tracking requirements, and the image analyzer cannot directly capture the edge at all, therefore, when using this invention, a point-finding tool is first used and then a straight line construction tool is used. like Figure 4 As shown, the point finding tool is used to select any feature point in the test edge, and the line construction tool is used to construct the test edge based on the principle that two points form a line. When the point finding tool selects two feature points, it works in conjunction with the line construction tool to perform the test edge grabbing operation. Step S7: Following the sequence of Step S6, Step S5, Step S4, and Step S3, perform the following operations in sequence: ceramic fusion edge gripping, material edge gripping, ceramic non-fusion edge inspection, and edge foil edge inspection on the other side of the full electrode tab to form a complete electrode test line group. Step S8: Set breakpoints for all picked feature points and grabbed edges, manually confirm and correct parameters using the measurement parameter modifier, and then use the line distance construction tool to calculate foil width, material width, ceramic width, and the fusion width of ceramic and material to achieve automatic measurement of all tab dimensions.
[0031] Specifically, after forming a complete electrode test line group, breakpoints are set at feature points and edges to achieve interruption confirmation of each step. After each automatic edge tracking is completed, the operator manually judges whether the edge tracking is correct. If correct, the mouse is moved to proceed to the next test. If the edge tracking result is incorrect, intervention is made to correct it. The measurement parameters and brightness are adjusted using the measurement parameter modifier to increase the difference in image grayscale values until the edge tracking result is correct. Then, the vertical distance calculation operation is performed using the line distance construction tool. The measurement parameter modifier is used to adjust the measurement parameters and brightness to increase the difference in image grayscale values. The measurement parameter modifier is as follows: Figure 5As shown, the measurement parameters include, but are not limited to, contrast, effective length, interference length, etc. Interruption confirmation can avoid the situation where edge grabbing errors are not detected or retesting is required after an edge grabbing error occurs. When an edge grabbing error occurs, it can be manually modified, which can also improve the accuracy of the automatic measurement program. Specifically, the line distance construction tool is used to test the vertical distance of a straight line, and the output is the foil width, material width, ceramic width, and ceramic-material fusion width on the left and right sides; After the above steps are completed, the process also includes: storing steps S2 to S8 into the automatic measurement program to achieve repeated testing of electrode sheets of the same specification.
[0032] To further demonstrate the application value of the automatic measurement method for all tab dimensions based on ceramic edge melting process in this invention, the specific process of the automatic measurement method for all tab dimensions based on ceramic edge melting process is described below, taking single-width continuous coating as an example: Step S1: Based on the tolerance zone of the total tab electrode test size, select the magnification of the image instrument. The magnification of the image instrument is 30.26 times. Step S2: Establish the test coordinate system of the automatic measurement program. Select 1 point near the positioning origin, click the point finding tool to set point 1, and select "Build Test Coordinate System" to establish the test coordinate system using this point. Step S3: Use the line-following tool to capture the edge foil on one side of the full-tab electrode sheet, i.e., the left edge foil edge 1 (line 1). Turn on the bottom light and adjust the brightness to make the left edge foil edge 1 (line 1) clearly visible and with a distinct color difference from the surrounding area, thus completing the edge-following operation. Figure 6 and Figure 7 As shown; Step S4: Use the line-following tool to capture the non-fused ceramic edge on the same side as the edge foil in step S3, i.e., the left non-fused ceramic edge 2 (line 2). Turn on the surface light and bottom light, and adjust the brightness to make the left non-fused ceramic edge 2 (line 2) clear in image and with obvious color difference from the surrounding area, thus completing the edge-following operation. Figure 6 and Figure 8 As shown; Step S5: Turn on the front light and bottom light. When the image is clear, use the point-finding tool to pick up at least two feature points on the same side of the material edge, i.e., the left material edge 3 (line 3). Use the line-construction tool to click on the feature points to complete the left material edge 3 (line 3) picking operation. Figure 6 As shown; Step S6: Turn on the surface light and bottom light. When the image is clear, use the point-finding tool to pick up at least two feature points on the same side of the ceramic fusion edge, i.e., the left ceramic fusion edge 4 (line 4). Complete the left ceramic fusion edge 4 (line 4) picking operation by clicking the feature points using the line construction tool. Figure 6 and Figure 9 As shown; Step S7: Following the sequence of steps S6, S5, S4, and S3, sequentially complete the following operations on the other side of the full-tab electrode: gripping the right ceramic fusion edge 5 (line 5), gripping the right material edge 6 (line 6), tracing the right non-fused ceramic edge 7 (line 7), and tracing the right edge foil edge 8 (line 8), forming a complete electrode test line group. Figure 6 As shown, 9 represents the foil material, 10 represents the positive electrode active slurry region, and 11 represents the ceramic slurry. Step S8: Set breakpoints for all picked feature points and grabbed edges. Manually confirm and correct parameters using the measurement parameter modifier. Then, use the line distance construction tool to calculate the foil width, material width, ceramic width, and the fusion width between the ceramic and material. For example: Select the left edge foil edge 1 (line 1) and the left material edge 3 (line 3) on one side, and click the line distance construction tool to obtain the left foil width (distance a). Select the right material edge 6 (line 6) and the right edge foil edge 8 (line 8), and click the line distance construction tool to obtain the right foil width (distance b). Repeat the above steps to complete the measurement operations for the material width (e.g., distance c), ceramic width (e.g., distance d), and the fusion width between the ceramic and material (e.g., distance e). The schematic diagram after the line distance construction tool is completed is shown below. Figure 10 As shown, the automatic measurement of all tab sizes is achieved, and the overall program process is as follows: Figure 11 As shown; After the above steps are completed, the following steps are also included: storing steps S2 to S8 into an automatic measurement program. When there are no significant changes in subsequent tolerances and material systems, this program can be directly called to achieve repeated testing of electrode sheets of the same specification. The above process demonstrates that the method of the present invention is applicable to single-width continuously coated full-tab electrode sheets. All dimensional measurements can be automatically completed under ceramic fusion edge conditions, with a testing time of approximately 1.5 minutes and accuracy meeting process tolerance requirements.
[0033] To further demonstrate the application value of the automatic measurement method for all tab dimensions based on ceramic edge melting process in this invention, the specific process of the automatic measurement method for all tab dimensions based on ceramic edge melting process is described below, taking multi-coating as an example: The steps and operations for multi-coating are the same as those for single-coating continuous coating. The difference is that in steps S5 and S6, the material edge and ceramic fusion edge of each coating are captured by two-point line drawing, and in step S8, the size data of multiple coatings are output simultaneously. The above process demonstrates that the method of the present invention is compatible with multiple coating modes, requiring no modification to the main program, only the addition of corresponding point capture.
[0034] In summary, this invention discloses an automatic measurement method for the dimensions of all tabs based on ceramic edge melting technology. By adjusting the magnification, constructing a coordinate system, classifying and capturing edges, verifying breakpoints, calculating dimensions, and fixing the program, it effectively solves the problem of not being able to automatically measure the blurred boundaries after ceramic edge melting, improves testing efficiency, and ensures measurement accuracy and data consistency. This method is simple to operate, highly compatible, and has good fault tolerance. It can be widely applied to the dimension inspection stage in the production process of lithium-ion battery all tab electrodes, effectively improving production efficiency and product yield.
[0035] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. An automatic measurement method for the dimensions of all tabs based on ceramic edge melting technology, characterized in that, This is achieved through an automatic measurement program, which employs a line-following tool, a point-finding tool, a straight-line construction tool, a measurement parameter modifier, and a line distance construction tool. Specifically, it includes the following steps: Step S1: Based on the tolerance zone of the total tab electrode test size, select the magnification of the image instrument so that the effective field of view of the image display is greater than 3 times the tolerance zone of the test size. Establish a physical coordinate system in the test area of the image instrument using a transparent plate and determine the positioning origin and positioning angle. Step S2: Develop an automatic measurement program based on the magnification of the imager and the physical coordinate system. Select a point on one side of the positioning origin, use this point as the reference point and construct a test coordinate system to complete the testing and positioning of the full electrode sheet. Step S3: Use the line edge-tracking tool to grab the edge foil on one side of the full-tab electrode sheet, turn on the bottom light, make the edge foil clear and the color difference obvious with the surrounding area, and complete the edge-tracking operation. Step S4: Use the line edge-tracking tool to capture the non-fused ceramic edge on the same side as the edge foil in step S3, turn on the surface light and bottom light to make the non-fused ceramic edge clear and obvious in color difference from the surrounding area, and complete the edge-tracking operation. Step S5: Turn on the front light and the bottom light. When the image is clear, use the point finding tool to pick up at least two feature points on the material edge on the same side. Use the line construction tool to click on the feature points to complete the material edge grabbing operation. Step S6: Turn on the front light and the bottom light. When the image is clear, use the point finding tool to pick up at least two feature points on the ceramic fusion edge on the same side. Use the line construction tool to click on the feature points to complete the ceramic fusion edge grabbing operation. Step S7: Following the sequence of Step S6, Step S5, Step S4, and Step S3, perform the following operations in sequence: ceramic fusion edge gripping, material edge gripping, ceramic non-fusion edge inspection, and edge foil edge inspection on the other side of the full electrode tab to form a complete electrode test line group. Step S8: Set breakpoints for all picked feature points and grabbed edges, manually confirm and correct parameters using the measurement parameter modifier, and then use the line distance construction tool to calculate foil width, material width, ceramic width, and the fusion width of ceramic and material to achieve automatic measurement of all tab dimensions.
2. The automatic measurement method for the dimensions of all tabs based on ceramic edge melting process according to claim 1, characterized in that, In step S1, the magnification of the imager is 30 to 50 times.
3. The automatic measurement method for the dimensions of all tabs based on ceramic edge melting process according to claim 1, characterized in that, In step S1, the distance between the positioning origin and the four edges of the test platform is greater than 2cm. The transparent plate forms a right angle with the positioning origin in the X-axis and Y-axis directions and extends to form a positioning angle. The extension length in the X-axis and Y-axis directions is greater than 5cm.
4. The automatic measurement method for the dimensions of all tabs based on ceramic edge melting process according to claim 1, characterized in that, Step S1 further includes: if the dimensional tolerance zone of a single test is different, then the effective field of view width of the image display is made to be greater than 3 times the maximum test dimensional tolerance zone.
5. The automatic measurement method for the dimensions of all tabs based on ceramic edge melting process according to claim 1, characterized in that, The line-following tool is used to generate a rectangular recognition box. The first gray value variation boundary in the direction of the arrow search of the rectangular recognition box is taken as the test edge to be captured. The gray value difference of the test edge is greater than 45. The edge-following direction is from the side without color difference interference to the side with color difference blemishes.
6. The automatic measurement method for the dimensions of all tabs based on ceramic edge melting process according to claim 4, characterized in that, The point-finding tool is used to select any feature point in the test edge, and the line-constructing tool is used to construct the test edge based on the principle that two points form a line. When the point-finding tool selects two feature points, it works in conjunction with the line-constructing tool to perform the test edge grabbing operation.
7. The automatic measurement method for the dimensions of all tabs based on ceramic edge melting process according to claim 1, characterized in that, The measurement parameter modifier is used to adjust measurement parameters and brightness, thereby increasing the difference in image grayscale values.
8. The automatic measurement method for the dimensions of all tabs based on ceramic edge melting process according to claim 1, characterized in that, The line distance construction tool is used to test the vertical distance of a straight line, and the output is the foil width, material width, ceramic width, and ceramic-material fusion width on the left and right sides.
9. The automatic measurement method for the dimensions of all tabs based on ceramic edge melting process according to claim 1, characterized in that, Step S8 specifically includes: after forming a complete electrode test line group, setting breakpoints for the feature points and edges to realize the interruption confirmation of each step; if the edge inspection result is incorrect, adjusting the measurement parameters and brightness through the measurement parameter modifier to increase the difference in imaging grayscale values until the edge inspection result is correct, and then continuing to use the line distance construction tool to perform vertical distance calculation operation.
10. The automatic measurement method for the dimensions of all tabs based on ceramic edge melting process according to claim 1, characterized in that, Also includes: Steps S2 to S8 are stored in the automatic measurement program to achieve repeated testing of electrodes of the same specification.