A visual inspection device based on lithium sulfinyl chloride battery production

Abstract

The application relates to the technical field of battery visual detection, and particularly discloses a visual detection equipment based on lithium hyposulfuryl chloride battery production, which comprises a detection table, a turnover plate for driving a to-be-detected battery to turn over above the detection table, a reversing plate arranged outside the to-be-detected battery, a rotating assembly arranged at the bottom of the turnover plate, and the rotating assembly is used for driving the to-be-detected battery to rotate along a vertical plane, the rotating assembly releases the to-be-detected battery after the to-be-detected battery is turned over once, the reversing plate clamps the to-be-detected battery, and drives the to-be-detected battery to rotate along a horizontal plane. Through the cooperative action of the turnover plate and the reversing plate, the to-be-detected battery is first vertically turned over to align four surfaces with a visual sensor, then horizontally rotated to align other two surfaces with the visual sensor, and the process ensures that the visual sensor can completely acquire the image of each side surface of the to-be-detected battery, avoids the blind area or omission caused by a fixed visual angle, and thus improves the comprehensiveness and reliability of detection.

Description

Technical Field

[0001] This invention relates to the field of battery visual inspection technology, and in particular to a visual inspection device based on lithium thionyl chloride battery production. Background Technology

[0002] The visual inspection equipment based on lithium thionyl chloride batteries is a specialized automated quality control system for the manufacturing process of this type of battery. It captures images of the battery's appearance using a high-resolution industrial camera and performs real-time analysis using machine vision algorithms. This automatically detects defects such as battery dimensions, scratches or dents on the casing, electrode welding quality, and the accuracy and completeness of label printing and affixing. This replaces traditional manual visual inspection, significantly improving the efficiency, consistency, and reliability of the production line's inspection, ensuring that batteries leaving the factory meet stringent quality standards.

[0003] For defects in the plastic casing of lithium thionyl chloride batteries, visual inspection is typically used for quality control.

[0004] For example, a machine vision inspection device disclosed in existing technology announcement CN119595541A includes a support frame on which several sets of industrial cameras and lenses are placed at equal intervals. A housing is set on one side of the support frame, and a conversion roller assembly is rotatably installed inside the housing. A guide cover for storing axles is welded to one side of the housing. A belt conveyor mechanism is set below the housing. The conversion roller assembly includes a conversion roller body, which is rotatably installed inside the housing, and six sets of placement slots opened at equal angles on the conversion roller body for placing axles. The housing is sequentially provided with a feed inlet, a detection window, and a discharge outlet. The guide cover faces the feed inlet, and the belt conveyor mechanism is located directly below the discharge outlet. The detection window is used for the industrial cameras and lenses to capture images of the axles. As the conversion roller body rotates continuously, the axles are automatically fed, conveyed to the detection window, and discharged, thus increasing the automation rate and efficiency of axle inspection.

[0005] However, existing detection components can only detect a maximum of five sides of a battery when inspecting its six sides due to the obstruction of the fixture. When inspecting the remaining side, the device needs to be flipped. Therefore, a detection device that can easily flip the battery is needed to avoid incomplete detection. Summary of the Invention

[0006] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0007] This invention provides a visual inspection device based on lithium thionyl chloride batteries, which can solve the problem of incomplete detection in existing technologies. The specific solution is as follows:

[0008] This invention provides a visual inspection device based on lithium thionyl chloride battery production, including an inspection table, a flipping plate on the top of the inspection table for flipping the battery under test, a reversing plate on the outside of the battery under test, and a rotating component at the bottom of the flipping plate. The rotating component is used to drive the battery under test to rotate along the vertical plane. After the rotating component flips the battery under test once, the rotating component releases the battery under test, and the reversing plate clamps the battery under test and drives the battery under test to rotate along the horizontal plane.

[0009] It also includes vision sensors, which are distributed on at least one side of the battery under test. The rotating component and commutator drive the battery under test to flip, and each side of the battery under test is aligned with the vision sensors for visual inspection. The vision inspection system adopts multi-angle image acquisition and advanced processing technology, including image enhancement and feature extraction. By optimizing the image through grayscale, filtering and edge detection, the system can effectively identify minor defects such as scratches, dents and packaging damage, and compare them with preset standards to reduce human subjective error. This solution improves the accuracy of defect identification and ensures that the packaging quality meets safety standards.

[0010] It also includes a feeding assembly, which is used to transport the battery to be tested to one side of the vision sensor, and to transport the tested battery to the outside of the testing station after testing.

[0011] In the above scheme, through the coordinated action of the flip plate and the reversing plate, the battery under test is first vertically flipped so that four faces are aligned with the vision sensor, and then horizontally rotated so that the other two faces are aligned with the vision sensor. This process ensures that the vision sensor can completely acquire images of each side of the battery under test, avoiding blind spots or omissions caused by a fixed viewing angle, thereby improving the comprehensiveness and reliability of the detection and ensuring that the overall quality of the battery is without blind spots.

[0012] Preferably, a positioning device is provided below the flip plate. The positioning device is used to confirm the position of the battery to be tested. Both the positioning device and the feeding assembly are electrically connected to the industrial control computer.

[0013] Preferably, a first telescopic component is fixedly installed on the top of the flip plate, and a first motor is fixedly installed on the top of the first telescopic component. The first motor is used to drive the flip plate to rotate.

[0014] Preferably, the reversing plate is located in the middle of the tilting plate, and the top of the reversing plate is rotatably connected to the top of the tilting plate. A second motor is fixedly installed on the top of the tilting plate, and the output shaft of the second motor is connected to the top of the reversing plate, so that the second motor can drive the reversing plate to rotate.

[0015] Preferably, the rotating assembly includes two rotating blocks, which are rotatably mounted on the bottom of the flip plate. The rotating blocks have an annular groove in the middle to ensure that they do not detach from the bottom of the flip plate. A sliding groove is provided in the middle of the rotating blocks, and a pressing rod is provided inside the sliding groove. The pressing rod is slidably connected to the inside of the sliding groove, and a pressing plate is fixedly connected to the end of the pressing rod near the battery to be tested.

[0016] Preferably, a fixing plate is provided on the outer side of the flip plate, a second telescopic member is fixedly connected to the top side of the fixing plate, the other end of the second telescopic member is fixedly connected to the outer wall of the flip plate, a limit rod is connected to the bottom side of the fixing plate near the sliding groove, a limit groove is opened on the side of the extrusion rod near the limit rod, and the limit rod is slidably connected to the limit groove.

[0017] Preferably, a first gear is connected to the outer wall of the rotating block, and a gear belt is meshed on the outer side of the first gear. The gear belt extends to the top of the flipping plate. A drive rod is provided above the two gear belts. The two ends of the drive rod are coupled to the gear belts. A second gear is connected to the middle of the drive rod. A third motor is fixedly installed on the top of the flipping plate. A third gear is installed on the drive shaft of the third motor. The third gear meshes with the second gear.

[0018] Preferably, clamping blocks are provided at both ends of the reversing plate, and clearance grooves are provided at both ends of the reversing plate. The clearance grooves are matched with the rotation trajectory of the clamping blocks. A drive arm is fixedly connected to one end of the clamping block, and the end of the drive arm is hinged to the inner wall of the clearance groove.

[0019] Preferably, a spring is connected between the outer wall of the drive arm and the inner wall of the clearance groove, a cavity is opened in the middle of the reversing plate, a third telescopic member is fixedly connected to the top of the inner wall of the cavity, a pull rope is connected to the bottom of the third telescopic member, and the ends of the pull rope are fixedly connected to the two drive arms respectively.

[0020] Preferably, the discharge assembly is a belt conveyor or a roller conveyor.

[0021] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0022] 1. This invention utilizes the coordinated action of a flip plate and a reversing plate. The battery under test is first vertically flipped so that four faces are aligned with the vision sensor, and then horizontally rotated so that the other two faces are aligned with the vision sensor. This process ensures that the vision sensor can completely acquire images of each side of the battery under test, avoiding blind spots or omissions caused by a fixed viewing angle, thereby improving the comprehensiveness and reliability of the detection and ensuring that the overall quality of the battery is without blind spots.

[0023] 2. The visual inspection system of this invention adopts multi-angle image acquisition and advanced processing technology, including image enhancement and feature extraction. By optimizing the image through grayscale conversion, filtering and edge detection, the system can effectively identify minor defects such as scratches, dents and packaging damage, and compare them with preset standards to reduce human subjective error. This solution improves the accuracy of defect identification and ensures that the quality of the battery casing meets safety standards.

[0024] 3. This invention integrates mechanical and electronic control modules to automatically complete the conveying, flipping, and detection of the battery to be tested. The feeding component and positioning device work in coordination to accurately convey the battery to the detection point. The flipping action is automatically switched by the rotating component and the reversing plate without manual intervention. This significantly improves detection efficiency, reduces operational complexity, and is suitable for large-scale assembly line operations.

[0025] 4. The system of this invention supports diverse inspection needs, such as geometric dimension measurement, flatness inspection and texture analysis. It adopts a method that combines template matching and machine learning to classify and process different defects (such as scratches or gaps), improving the ability to handle complex problems. This enhances the versatility of the device and makes it suitable for various quality risk control of batteries.

[0026] 5. The detection results of this invention are transmitted to the industrial control computer system in real time and linked with the sorting mechanism to realize the automatic rejection of non-conforming products. At the same time, the interface displays the location and type of defects to assist manual re-inspection decisions. This solution enhances the timeliness and traceability of quality control, reduces the flow of defective products into subsequent stages, and improves overall production safety.

[0027] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0029] Figure 1 This is a perspective view of the entire invention;

[0030] Figure 2 A perspective view of the present invention without the testing station;

[0031] Figure 3 This is a perspective view of the present invention without the feeding and discharging components;

[0032] Figure 4 This is a perspective view of the flip plate and the battery under test of the present invention;

[0033] Figure 5 This is a perspective view of the flip plate of the present invention;

[0034] Figure 6 This is a perspective view of the rotating block and gear belt of the present invention;

[0035] Figure 7 This is an exploded view of the rotating block, the pressing rod, and the fixing plate of the present invention;

[0036] Figure 8 This is a perspective view of the commutator plate and the battery under test of the present invention;

[0037] Figure 9 This is a partial cross-sectional view of the commutator plate of the present invention;

[0038] Figure 10 This is a perspective view of the clamping block of the present invention.

[0039] The accompanying figure is labeled as follows:

[0040] 1. Testing table; 2. Battery to be tested; 3. Flip plate; 4. Reversing plate; 5. Vision sensor; 6. Feeding assembly; 7. Positioning device; 8. First telescopic component; 9. First motor; 10. Mounting plate; 11. Second motor; 12. Rotating block; 13. Sliding groove; 14. Extrusion rod; 15. Extrusion plate; 16. Fixing plate; 17. Second telescopic component; 18. Limiting rod; 19. Limiting groove; 20. First gear; 21. Gear belt; 22. Drive rod; 23. Second gear; 24. Third gear; 25. Third motor; 26. Clamping block; 27. Clearance groove; 28. Drive arm; 29. ​​Spring; 30. Third telescopic component; 31. Pull rope. Detailed Implementation

[0041] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0042] Example 1: As Figure 1 , Figure 2As shown, this embodiment provides a visual inspection device based on lithium thionyl chloride battery production, including an inspection platform 1. Above the inspection platform 1 is a flip plate 3 that drives the battery under test 2 to flip. A reversing plate 4 is also provided on the outside of the battery under test 2. A rotating component is provided at the bottom of the flip plate 3. The rotating component is used to drive the battery under test 2 to rotate in the vertical direction. After the rotating component flips the battery under test 2 one revolution, the rotating component releases the battery under test 2, and the reversing plate 4 clamps the battery under test 2. At this time, the reversing plate 4 then drives the battery under test 2 to rotate in the horizontal direction. Through the above scheme, the flip plate 3 avoids causing blind spots in the inspection of the battery under test 2.

[0043] like Figure 2 As shown, the above scheme also includes a vision sensor 5, which is distributed on at least one side of the battery under test 2. The rotating component and the commutator 4 drive the battery under test 2 to flip, and align each side of the battery under test 2 with the vision sensor 5 in sequence for visual inspection.

[0044] It should be noted that the specific working principle of the aforementioned visual sensor 5 is as follows:

[0045] First, images of the battery are acquired using a high-resolution camera (such as a CCD or CMOS camera). Depending on the testing requirements, multi-angle shooting (such as arranging three cameras at 120° intervals) or line scanning (such as using a high-speed line scan camera to scan a rotating propellant column) can be used to cover all appearance features.

[0046] S1. Image preprocessing:

[0047] Grayscale conversion and filtering: After converting to grayscale, noise is removed by median filtering or smoothing filtering;

[0048] Edge detection: The edge contour of the battery under test is extracted using operators such as Canny and Sobel, which facilitates the subsequent measurement of geometric parameters (such as length and diameter);

[0049] Image enhancement: Histogram equalization or thresholding (such as the Otsu algorithm) can enhance the contrast between defects and the background.

[0050] S2. Feature Extraction and Target Recognition:

[0051] Geometric features: The dimensions (length, diameter), end face flatness, etc. of the battery under test are calculated by edge detection and line / circle fitting algorithms, and the pass rate is judged by comparing with the preset standard;

[0052] Defect characteristics: Morphological processing (expansion, erosion) and region segmentation (connected component labeling) are used to identify defects such as scratches, dents, and press-fit gaps. For example, after filling the defect area with a closing operation, the image is subtracted from the original image, and the root mean square error is calculated to determine the degree of defect.

[0053] Texture and color analysis: Extract areas of texture anomalies or color changes for damaged or leaked packaging.

[0054] S3. Defect Classification and Decision-Making:

[0055] Template matching: The detected features are compared with a standard template (such as an image of a defect-free battery under test). If the difference exceeds a threshold, it is judged as unqualified.

[0056] Machine learning: Some systems use support vector machines (SVM) or convolutional neural networks (CNN) to classify defects (such as scratches vs. bubbles), improving the accuracy of identifying complex defects.

[0057] S4. Result Output and Control:

[0058] The test results are transmitted to the PLC system in real time, triggering the sorting mechanism to remove defective products, or displaying the location and type of defects through the interface to assist manual re-inspection.

[0059] As one possible implementation, such as Figure 2 As shown, it also includes a feeding assembly 6, which is used to transport the battery to be tested 2 to one side of the vision sensor 5, and to transport the tested battery 2 to the outside of the testing station 1 after testing. The feeding assembly 6 specifically includes two drive rollers and a conveyor belt. The two drive rollers are installed at both ends of the conveyor belt, and the two ends of the two drive rollers are rotatably connected to the side wall of the testing station 1 through bearings. One of the drive rollers is connected to a drive source, which can be a stepper motor.

[0060] As one possible implementation, such as Figure 2 As shown, a positioning device 7 is provided below the flip plate 3. The positioning device 7 is used to confirm the position of the battery 2 to be tested. The positioning device 7 and the feeding assembly 6 are both electrically connected to the industrial control computer.

[0061] It should be noted that the positioning device 7 mentioned above can be an infrared sensor. The feeding assembly 6 conveys the battery 2 to be tested, and then the length of the battery 2 to be tested is measured by two infrared sensors. The length is then calculated by the industrial control computer, and the feeding assembly 6 is controlled to convey the battery 2 to be tested directly under the flip plate 3, thereby completing the positioning of the battery 2 to be tested, so that the battery 2 to be tested is exactly under the flip plate 3.

[0062] As one possible implementation, such as Figure 3As shown, a first telescopic member 8 is fixedly installed on the top of the flip plate 3, and a first motor 9 is fixedly installed on the top of the first telescopic member 8. The first motor 9 is used to drive the flip plate 3 to rotate. The first motor 9 is fixedly installed on the top of the inspection table 1, and the output shaft of the first motor 9 extends into the interior of the inspection table 1. It should be noted that a mounting plate 10 is also connected between the bottom output shaft of the first motor 9 and the top of the first telescopic member 8. In order to improve the stability of lifting, two symmetrical first telescopic members 8 are provided, and the tops of the two first telescopic members 8 are fixedly connected to the bottom of the mounting plate 10.

[0063] like Figure 4 As shown, the reversing plate 4 is located in the middle of the flip plate 3, and the top of the reversing plate 4 is rotatably connected to the top of the flip plate 3. The top of the flip plate 3 is fixedly mounted with a second motor 11, and the output shaft of the second motor 11 is connected to the top of the reversing plate 4, so that the second motor 11 can drive the reversing plate 4 to rotate.

[0064] As one possible implementation, such as Figure 5 , Figure 6 , Figure 7 As shown, the rotating assembly includes two rotating blocks 12, which are rotatably mounted on the bottom of the flip plate 3. The middle of the rotating block 12 has an annular groove to ensure that it does not detach from the bottom of the flip plate 3. A sliding groove 13 is provided in the middle of the rotating block 12. A pressing rod 14 is provided inside the sliding groove 13. The pressing rod 14 is slidably connected to the inside of the sliding groove 13. The cross-section of the pressing rod 14 and the sliding groove 13 is square. A pressing plate 15 is fixedly connected to one end of the pressing rod 14 near the battery 2 under test.

[0065] like Figure 7 As shown, a fixing plate 16 is provided on the outer side of the flip plate 3. A second telescopic member 17 is fixedly connected to the top side of the fixing plate 16. The other end of the second telescopic member 17 is fixedly connected to the outer wall of the flip plate 3. A limiting rod 18 is connected to the bottom side of the fixing plate 16 near the sliding groove 13. A limiting groove 19 is opened on the side of the pressing rod 14 near the limiting rod 18. The limiting rod 18 is slidably connected to the limiting groove 19. The end of the limiting rod 18 and the inner end of the limiting groove 19 are both provided with limiting structures, so that the limiting rod 18 and the limiting groove 19 cannot be separated.

[0066] like Figure 6As shown, a first gear 20 is connected to the outer wall of the rotating block 12. A gear belt 21 is meshed on the outer side of the first gear 20. The gear belt 21 extends to the top of the flip plate 3. A drive rod 22 is set above the two gear belts 21. The two ends of the drive rod 22 are coupled to the gear belts 21. A second gear 23 is connected to the middle of the drive rod 22. A third motor 25 is fixedly installed on the top of the flip plate 3. A third gear 24 is installed on the drive shaft of the third motor 25. The third gear 24 meshes with the second gear 23, so that the third motor 25 can drive the drive rod 22 to rotate. Then, through the gear belt 21, it drives the rotating block 12 to rotate. The drive rod 22 drives the two gear belts 21 to move, which in turn drives the two first gears 20 and the rotating block 12 to rotate. In a symmetrical manner, the battery under test 2 can be driven to rotate stably, avoiding the instability caused by unilateral drive.

[0067] like Figure 8 , Figure 9 , Figure 10 As shown, clamping blocks 26 are provided at both ends of the reversing plate 4, and clearance grooves 27 are provided at both ends of the reversing plate 4. The clearance grooves 27 are matched with the rotation trajectory of the clamping blocks 26. A drive arm 28 is fixedly connected to one end of the clamping block 26. The end of the drive arm 28 is hinged to the inner wall of the clearance groove 27. A spring 29 is connected between the outer wall of the drive arm 28 and the inner wall of the clearance groove 27. A cavity is provided in the middle of the reversing plate 4. A third telescopic member 30 is fixedly connected to the top of the inner wall of the cavity. A pull rope 31 is connected to the bottom of the third telescopic member 30. The ends of the pull rope 31 are fixedly connected to the two drive arms 28 respectively.

[0068] In the above scheme, the third telescopic component 30 drives the pull rope 31 to move upward, thereby using the restoring force of the spring 29 to move the two clamping blocks 26 and the two drive arms 28 closer to the inside, and the clamping force formed by the two clamping blocks 26 clamps the two ends of the battery to be tested 2.

[0069] Example 2: This example differs from Example 1 in that it provides a working principle for a visual inspection device based on lithium thionyl chloride batteries, including the following steps:

[0070] S1. Preparation Stage (Positioning and Initial Conveying of the Battery Under Test): At the start, the feeding assembly 6 is activated, and its conveyor belt is driven by a drive source (such as a stepper motor) to transport the battery under test 2 from the entrance to the testing area; the positioning device 7 (such as an infrared sensor) works simultaneously: by measuring the length of the battery under test and transmitting the data to the industrial control computer, the precise position is calculated, and then the feeding assembly 6 is controlled to move the battery under test 2 to directly below the flip plate 3; this step ensures that the battery under test 2 is aligned with the position of the vision sensor 5 to avoid offset affecting the accuracy of the test.

[0071] S2, Flipping Detection Stage (Vertical Rotation and Image Acquisition): After positioning, the flipping plate 3 descends, and its bottom rotating component is activated to clamp the battery 2 under test for vertical flipping. Specific actions: The third motor 25 drives the third gear 24 to rotate, which in turn drives the second gear 23 and the drive rod 22 to rotate, causing the gear belt 21 to link with the first gear 20, thereby driving the two rotating blocks 12 to rotate. During rotation, the pressing rod 14 slides along the sliding groove 13, clamping the battery 2 under test through the pressing plate 15. Simultaneously, the limiting rod 18 slides within the limiting groove 19 to stabilize the battery. Trajectory; The battery under test 2 rotates completely around the vertical direction to ensure that each side is exposed to the vision sensor 5; The vision sensor 5 is distributed on one or more sides of the battery under test, for example, multiple cameras are arranged at 120° intervals to continuously acquire images; Image processing includes: grayscale conversion and filtering for noise reduction, edge detection to extract contours, image enhancement (such as histogram equalization) to improve contrast, and then extracting geometric features (size, flatness) and defect features (such as scratches, dents), and classifying and judging defects through template matching or machine learning (SVM / CNN).

[0072] S3, Reversing Stage (Horizontal Rotation and Adjustment): After completing the vertical flip, the rotating component is released: the second telescopic member 17 retracts, driving the fixed plate 16 to move, causing the limiting rod 18 to disengage from the limiting groove 19, and the squeezing rod 14 to release the battery 2 under test; at the same time, the reversing plate 4 takes over: the second motor 11 drives the reversing plate 4 to rotate, and through the cooperation of the avoidance groove 27 and the spring 29, the third telescopic member 30 pulls the pull rope 31, causing the drive arm 28 to drive the clamping block 26 to clamp the battery 2 under test; then, the reversing plate 4 drives the battery 2 under test to rotate in the horizontal direction, further aligning the not fully exposed surface (such as the top or bottom surface) with the vision sensor 5 for supplementary detection; this stage avoids detection blind spots caused by a single flip direction.

[0073] S4. Result Processing Stage (Output and Control): After all inspections are completed, the visual processing results (such as pass / fail judgment or defect type) are transmitted to the PLC system in real time; the industrial control computer controls the feeding component 6 to transport the battery 2 to be tested out of the inspection station 1 according to the results; non-conforming products are automatically triggered to be rejected by the sorting mechanism, while qualified products flow to the next stage; at the same time, the user interface displays the defect location and type, which is convenient for manual re-inspection; the whole process is carried out in a cycle to ensure the high efficiency of continuous assembly line operation; the device achieves full automation through mechanical linkage (telescopic parts, motors, gears) and electronic coordination (positioning, image algorithms), which significantly improves the safety and reliability of battery quality inspection.

[0074] In summary, this invention, through the coordinated action of the flipping plate 3 and the reversing plate 4, first vertically flips the battery 2 under test so that four faces are aligned with the vision sensor 5, and then horizontally rotates it so that the other two faces are aligned with the vision sensor 5. This process ensures that the vision sensor 5 can completely acquire images of each side of the battery 2 under test, avoiding blind spots or omissions caused by a fixed viewing angle, thereby improving the comprehensiveness and reliability of the inspection and ensuring that the overall quality of the battery is without blind spots. The visual inspection system adopts multi-angle image acquisition and advanced processing technology, including image enhancement and feature extraction. Through grayscale conversion, filtering, and edge detection to optimize the image, the system can effectively identify minor defects such as scratches, dents, and packaging damage, and compare them with preset standards, reducing human subjective error. This solution improves the accuracy of defect identification and ensures that the packaging quality meets safety standards. The visual inspection system as a whole is related to the vision sensor 5, but is not a direct component name. By integrating mechanical and electronic control modules, it automatically completes the process of... The battery 2 is conveyed, flipped, and inspected. The feeding assembly 6 and positioning device 7 work in coordination to accurately deliver the battery 2 to the inspection point. The flipping action is automatically switched by the rotating assembly and the reversing plate 4 without manual intervention, which significantly improves inspection efficiency, reduces operational complexity, and is suitable for large-scale assembly line operations. The system supports diverse inspection needs, such as geometric dimension measurement, flatness inspection, and texture analysis. It adopts a method combining template matching and machine learning to classify and handle different defects (such as scratches or gaps), improving the ability to handle complex problems. This enhances the versatility of the device and is suitable for various quality risk control of batteries. The inspection results are transmitted to the industrial control computer system in real time and linked to the sorting mechanism to realize the automatic rejection of non-conforming products. At the same time, the interface displays the location and type of defects to assist manual re-inspection decisions. This solution enhances the timeliness and traceability of quality control, reduces the flow of defective products into subsequent stages, and improves overall production safety.

[0075] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0076] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0077] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0078] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A visual inspection device based on lithium thionyl chloride battery production, comprising an inspection stage, and a flipping plate above the inspection stage for rotating the battery under test, characterized in that: The battery under test is also equipped with a commutator plate on its exterior and a rotating component at the bottom of the flip plate. The rotating component is used to drive the battery under test to rotate along the vertical plane. After the rotating component flips the battery under test once, the rotating component releases the battery under test, and the commutator plate clamps the battery under test, driving the battery under test to rotate along the horizontal plane. It also includes a vision sensor, which is distributed on at least one side of the battery under test. The rotating assembly and the commutator drive the battery under test to flip, and align each side of the battery under test with the vision sensor in turn for visual inspection. It also includes a feeding assembly, which is used to transport the battery to be tested to one side of the vision sensor, and to transport the tested battery to the outside of the testing station.

2. The visual inspection device based on lithium thionyl chloride battery production as described in claim 1, characterized in that: A positioning device is installed below the flip plate. The positioning device is used to confirm the position of the battery to be tested. Both the positioning device and the feeding assembly are electrically connected to the industrial control computer.

3. The visual inspection device based on lithium thionyl chloride battery production as described in claim 1, characterized in that: A first telescopic component is fixedly installed on the top of the flip plate, and a first motor is fixedly installed on the top of the first telescopic component. The first motor is used to drive the flip plate to rotate.

4. The visual inspection device based on lithium thionyl chloride battery production as described in claim 1, characterized in that: The reversing plate is located in the middle of the tilting plate, and the top of the reversing plate is rotatably connected to the top of the tilting plate. A second motor is fixedly installed on the top of the tilting plate, and the output shaft of the second motor is connected to the top of the reversing plate, so that the second motor can drive the reversing plate to rotate.

5. The visual inspection device based on lithium thionyl chloride battery production as described in claim 1, characterized in that: The rotating assembly includes two rotating blocks, which are rotatably mounted on the bottom of the flip plate. The rotating blocks have an annular groove in the middle to ensure that they do not detach from the bottom of the flip plate. A sliding groove is provided in the middle of the rotating blocks, and a pressing rod is provided inside the sliding groove. The pressing rod is slidably connected to the inside of the sliding groove. A pressing plate is fixedly connected to the end of the pressing rod near the battery to be tested.

6. The visual inspection device based on lithium thionyl chloride battery production as described in claim 5, characterized in that: A fixed plate is provided on the outer side of the flip plate. A second telescopic component is fixedly connected to the top side of the fixed plate. The other end of the second telescopic component is fixedly connected to the outer wall of the flip plate. A limit rod is connected to the bottom side of the fixed plate near the sliding groove. A limit groove is opened on the side of the extrusion rod near the limit rod. The limit rod and the limit groove are slidably connected.

7. The visual inspection device based on lithium thionyl chloride battery production as described in claim 1, characterized in that: The outer wall of the rotating block is connected to a first gear, and a gear belt is meshed on the outer side of the first gear. The gear belt extends to the top of the flipping plate. A drive rod is set above the two gear belts. The two ends of the drive rod are coupled to the gear belts. A second gear is connected to the middle of the drive rod. A third motor is fixedly installed on the top of the flipping plate. A third gear is installed on the drive shaft of the third motor. The third gear meshes with the second gear.

8. The visual inspection device based on lithium thionyl chloride battery production as described in claim 1, characterized in that: Clamping blocks are provided at both ends of the commutator plate, and clearance grooves are provided at both ends of the commutator plate. The clearance grooves are matched with the rotation trajectory of the clamping blocks. A drive arm is fixedly connected to one end of the clamping block, and the end of the drive arm is hinged to the inner wall of the clearance groove.

9. A visual inspection device based on lithium thionyl chloride battery production as described in claim 8, characterized in that: A spring connects the outer wall of the drive arm to the inner wall of the clearance groove. A cavity is opened in the middle of the reversing plate. A third telescopic member is fixedly connected to the top of the inner wall of the cavity. A pull rope is connected to the bottom of the third telescopic member. The ends of the pull rope are fixedly connected to the two drive arms respectively.

10. A visual inspection device based on lithium thionyl chloride battery production as described in claim 1, characterized in that: The discharge assembly is a belt conveyor or a roller conveyor.

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