Safety item detection method and system

Abstract

This invention provides a safety inspection method and system, relating to the field of lithium battery manufacturing technology. The method utilizes an image sensor to detect notch size, and based on the notch size, it completes the detection and verification of tab folding / missing parts, folding, and electrode damage, eliminating the need for manual operation on the electrode in conventional technologies. Simultaneously, an automatic sensing labeling mechanism completes the detection and verification of defective electrode yellow labels and defective separator blue labels. Then, a damage sensor completes the detection and verification of damaged electrode yellow labels, eliminating the need for manual tape application for verification, further improving efficiency. Compared to existing technologies, this invention provides a safety inspection method and system that can automatically complete various detection and verification processes without human intervention, offering high efficiency, good consistency, and eliminating uncontrollable human factors, significantly improving the reliability and safety of the equipment.

Description

Technical Field

[0001] This invention relates to the field of lithium battery manufacturing technology, and more specifically, to a safety item detection method and system. Background Technology

[0002] In the development of lithium battery equipment, achieving ultimate efficiency and maximizing value creation are the industry's relentless goals and important driving forces for the development of the lithium battery industry. Currently, CTS safety testing involves a lot of manual intervention, is time-consuming, has poor consistency, and is subject to many uncontrollable human factors, resulting in reduced safety and reliability, and seriously affecting equipment efficiency, uptime, and overall reliability and safety.

[0003] Currently, human intervention methods typically require manual operation of electrodes, diaphragms, etc., followed by testing and verification. This process is time-consuming, labor-intensive, inefficient, and inconsistent, and also suffers from numerous uncontrollable human factors, poor reliability, and low safety. Summary of the Invention

[0004] The objectives of this invention include, for example, providing a safety item detection method and system that can automatically complete various detection and verification processes without human intervention, achieving high efficiency and consistency, and eliminating uncontrollable human factors, thereby greatly improving the reliability and safety of the equipment.

[0005] The embodiments of the present invention can be implemented as follows:

[0006] In a first aspect, the present invention provides a method for detecting safety items, comprising:

[0007] A punching mechanism is used to punch notches at the edge of the electrode and at the electrode tab;

[0008] The size of the notch is detected using an image sensor to complete the verification of tab folding / missing, folding, and electrode breakage detection.

[0009] An automatic sensing label mechanism is used to complete the yellow label detection and verification of defective electrode sheets and the blue label detection and verification of defective diaphragms.

[0010] A labeling device is used to attach labeling patches to the edges of the electrode sheets;

[0011] The yellow label detection verification of the electrode damage sensor is completed by using the damage sensor to detect the label patch.

[0012] In an optional implementation, the steps of detecting and verifying tab folding, missing, and flipping, as well as electrode breakage, are completed by using a sensor to detect the size of the punching blade. These steps include:

[0013] The sensor is used to detect notches at the edge of the electrode to complete the electrode damage detection and verification.

[0014] The sensor detects gaps at the tabs to verify tab folding / missing and tab flipping.

[0015] In an optional implementation, an automatic sensing labeling mechanism is used to complete the steps of yellow label detection and verification for defective electrode sheets and blue label detection and verification for defective diaphragms, including:

[0016] A color mark sensor is used to emit detection light;

[0017] The fixed plate with color markings is moved back and forth so that the color markings are aligned with or offset from the detection light;

[0018] The color mark sensor detects the signal of the detection light aligning or misaligning with the color mark to complete the yellow mark detection and verification of defective electrode sheets and the blue mark detection and verification of defective diaphragms.

[0019] The color markings include yellow and blue markings.

[0020] In an optional implementation, the step of affixing a labeling patch to the edge of the electrode using a labeling mechanism includes:

[0021] Adjust the preset position of the label patch on the electrode;

[0022] A labeling mechanism is used to attach label sheets to the edges of the electrode sheets;

[0023] The preset position is aligned with the detection position of the damage sensor.

[0024] In an optional implementation, the security item detection method further includes:

[0025] The position of the diaphragm inside and outside is controlled by a correction mechanism;

[0026] The diaphragm misalignment value is detected by using a diaphragm winding sensor to complete the diaphragm damage detection and verification.

[0027] In an optional implementation, the security item detection method further includes:

[0028] The electrode is fed into the equipment with a delayed feeding end;

[0029] The electrode head folding CCD safety item detection and verification is completed by using a CCD sensor to detect the image at the feed end of the electrode.

[0030] Secondly, the present invention provides a safety item detection system, applicable to the safety item detection method as described in any of the foregoing embodiments, comprising:

[0031] The punching mechanism is used to punch notches at the edges of the electrode plates and at the electrode tabs;

[0032] An image sensor is used to detect the size of the notch to complete the detection and verification of tab folding / missing, folding, and electrode breakage.

[0033] An automatic sensing label mechanism is used to complete the yellow label detection and verification of defective electrode sheets and the blue label detection and verification of defective diaphragms;

[0034] Labeling mechanism, used to attach label patches to the edge of the electrode sheet;

[0035] A damage sensor is used to detect the label patch to complete the yellow label detection verification of the electrode damage sensor.

[0036] In an optional embodiment, the corner punching mechanism includes a first corner punching assembly, a second corner punching assembly, and a waste box. The first corner punching assembly and the second corner punching assembly are disposed opposite to each other. The first corner punching assembly is used to punch a notch on the inner edge of the electrode sheet, and the second corner punching assembly is used to punch a notch on the outer edge of the electrode sheet or at the electrode tab. The waste box is disposed below the first corner punching assembly and the second corner punching assembly and is used to receive punching waste.

[0037] In an optional embodiment, the automatic sensing label mechanism includes a mounting platform, a color mark sensor, a fixing plate, and a plate drive component. The color mark sensor and the plate drive component are both mounted on the mounting platform. The color mark sensor is used to emit detection light to the electrode or diaphragm. The fixing plate is driven by the plate drive component and is used to move under or away from the color mark sensor under the drive of the plate drive component. The fixing plate is also provided with a color mark. The color mark sensor is used to detect the color mark to complete the yellow mark detection verification for defective electrode products and the blue mark detection verification for defective diaphragm products.

[0038] In an optional embodiment, the labeling mechanism includes a mounting plate, an adjusting component, an unwinding shaft, a rewinding shaft, and an adhesive block. The adjusting component is movably disposed on the mounting plate and is used to adjust the preset position of the label patch on the electrode. The unwinding shaft and the rewinding shaft are rotatably disposed on the mounting plate. The adhesive block is disposed below the unwinding shaft and is used to apply the label patch to the electrode.

[0039] The beneficial effects of the embodiments of the present invention include, for example:

[0040] The safety inspection method and system provided in this invention punches notches at the edge of the electrode and the tab using a punching mechanism. An image sensor then detects the size of the notches, and the detection and verification of tab folding / missing parts, folding, and electrode damage are completed based on the notch size. This eliminates the need for manual operation on the electrode in conventional techniques, significantly improving efficiency. Simultaneously, an automatic sensing labeling mechanism completes the yellow label detection and verification of defective electrode products and the blue label detection and verification of defective diaphragms. Furthermore, a labeling mechanism affixes identification patches to the edge of the electrode, and a damage sensor with added identification patches completes the yellow label detection and verification of electrode damage, eliminating the need for manual tape application and further improving efficiency. Compared to existing technologies, this invention provides a safety inspection method and system that can automatically complete various inspection and verification processes without human intervention, offering high efficiency, good consistency, and eliminating uncontrollable human factors, greatly improving the reliability and safety of the equipment. Attached Figure Description

[0041] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0042] Figure 1 This is a schematic diagram of the angle-attacking mechanism in the first embodiment of the present invention from a first perspective;

[0043] Figure 2 This is a schematic diagram of the angle-attacking mechanism in the first embodiment of the present invention from a second perspective;

[0044] Figure 3 This is a schematic diagram of the automatic sensing tag mechanism in the first embodiment of the present invention;

[0045] Figure 4 This is a schematic diagram of the labeling mechanism in the first embodiment of the present invention;

[0046] Figure 5 This is a flowchart illustrating the steps of the safety item detection method in the second embodiment of the present invention.

[0047] Icons: 110-Punching mechanism; 111-First punching assembly; 113-Second punching assembly; 115-Scrap box; 130-Automatic label sensing mechanism; 131-Mounting platform; 133-Color mark sensor; 135-Fixing plate; 137-Plate driver; 139-Color mark; 150-Labeling mechanism; 151-Mounting plate; 153-Adjusting component; 155-Unwinding shaft; 157-Rewinding shaft; 159-Adhesive block; 200-Diaphragm; 300-Electrode sheet; 310-Electrode tab. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0050] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0051] In the description of this invention, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0052] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0053] As disclosed in the background section, existing security item detection techniques typically require multiple human interventions, specifically, for example:

[0054] 1. Before starting the equipment, the electrode head is folded and the CCD safety item is checked and verified: The operator needs to fold the electrode feed end in a triangle (e.g., 3*3mm) to confirm the CCD detection results and alarm records.

[0055] 2. Before starting the equipment, check and verify the tab folding / missing tabs: Production staff fold the tabs diagonally and along the base of the tabs towards the electrode sheet to confirm the equipment alarm records.

[0056] 3. Before starting the equipment, verify the folding of the tabs at the winding point: Production staff fold the tabs diagonally and along the base of the tabs towards the electrode sheet, and confirm the equipment alarm records. At the same time, confirm that the distance from the tab sensor at the winding point to the outer edge of the electrode sheet is within 2 / h of the tab width.

[0057] 4. Before starting the equipment, electrode breakage detection and verification: Production staff use special electrode breakage tools to cause damage to the electrode, and confirm the equipment's detection results and alarm shutdown records.

[0058] 5. Before starting the equipment, verify the yellow label detection of the electrode defect sensor: Production staff place the yellow label on the electrode defect sensor and then remove it to confirm the equipment's detection results, alarm records, and whether the electrode rolls are normal. Simultaneously, check whether the alarm value is within the specifications in the process document (e.g., 900).

[0059] 6. Before starting the equipment, verify the yellow label detection of the electrode breakage sensor: Production staff will affix a yellow label to the electrode behind the defective electrode sensor, with the label extending beyond the inner edge of the electrode by a certain distance (e.g., 3mm). Turn on the equipment and confirm the detection results, alarm records, and whether the electrode is being discharged normally into the NG slot of the unloading machine.

[0060] 7. Before starting the equipment, verify the blue label detection of the diaphragm defect sensor: Production staff place the blue label on the electrode defect sensor and then remove it to confirm the equipment's detection results, alarm records, and whether the diaphragm is a normal single roll. Simultaneously, check whether the alarm value is within the specifications in the process document (e.g., 900).

[0061] 8. Before starting the equipment, the diaphragm winding sensor is tested for damage: Production staff pull the diaphragm beyond the range of the winding sensor, turn on the equipment, and confirm the equipment's test results, alarm records, whether the diaphragm is rolled up normally, and whether it is properly discharged to the NG slot of the unloading machine.

[0062] Safety testing and verification in traditional processes require multiple manual interventions, which is not only time-consuming, labor-intensive, and inefficient, but also suffers from problems such as numerous uncontrollable human factors, poor reliability, and low safety.

[0063] To address the aforementioned problems, this application provides a novel safety item detection method and system, significantly improving efficiency to establish a highly efficient, reliable, safe, and stable winding machine. It should be noted that, unless otherwise specified, features in the embodiments of this invention can be combined with each other.

[0064] First Embodiment

[0065] See also Figures 1 to 4 This embodiment provides a safety item detection system that can automatically complete various detection and verification processes without human intervention. It is highly efficient, consistent, and free from uncontrollable human factors, greatly improving the reliability and safety of the equipment.

[0066] The safety inspection system provided in this embodiment includes a program controller, a punching mechanism 110, an image sensor, an automatic sensing adhesive applicator, a labeling mechanism 150, and a damage sensor. The program controller is electrically connected to the punching mechanism 110, the image sensor, the labeling mechanism 150, the automatic sensing adhesive applicator, and the damage sensor. The punching mechanism 110 is used to punch notches at the edge of the electrode 300 and the tab 310. The image sensor is used to detect the size of the notches to complete the folding / missing detection verification, folding detection verification, and electrode 300 damage detection verification of the tab 310. The automatic sensing labeling mechanism 130 is used to complete the yellow label detection verification of defective electrode 300 and the blue label detection verification of defective diaphragm 200. The labeling mechanism 150 is used to attach a label patch to the edge of the electrode 300. The damage sensor is used to detect the label patch to complete the yellow label detection verification of electrode 300 damage.

[0067] Furthermore, the safety detection system provided in this embodiment also includes a web-correcting mechanism, a CCD sensor, and a diaphragm 200 winding sensor. The web-correcting mechanism, CCD sensor, and diaphragm 200 winding sensor are all electrically connected to the programmable controller. The web-correcting mechanism controls the inward and outward positions of the diaphragm 200, causing misalignment. The diaphragm 200 winding sensor detects the misalignment value and performs diaphragm 200 damage detection verification. The CCD sensor can detect the image at the feed end of the electrode 300 that is fed into the equipment later to perform CCD safety detection verification of the electrode 300 head folding. Because a folded electrode 300 head appears as a shortened head in the image, using a delayed feeding method can control the less-than-perfect head of the electrode 300 for detection, thereby detecting whether the CCD sensor is intact.

[0068] In actual testing and verification, the electrode 300 is first fed into the equipment with a delayed start. Then, a CCD sensor is used to detect the image of the electrode 300's feed end to complete the CCD safety check for folding at the electrode 300's head. Next, a punching mechanism 110 punches notches at the edge of the electrode 300 and the tab 310. Then, an image sensor detects the size of the notches and compares them with a preset size to verify folding / missing tabs, folding, and electrode 300 damage. Then, an automatic sensing labeling mechanism 150 is used to complete the yellow label detection for defective electrode 300 and the blue label detection for defective diaphragm 200. Simultaneously, the labeling mechanism 150 affixes label patches to the edge of the electrode 300, and a damage sensor detects the label patches to complete the yellow label detection for electrode 300 damage. Finally, the correction mechanism is used to control the misalignment of the diaphragm 200, and the diaphragm 200 winding sensor is used to detect the misalignment value of the diaphragm 200 to complete the diaphragm 200 damage detection and verification.

[0069] See Figure 1 and Figure 2 In this embodiment, the punching mechanism 110 includes a first punching component 111, a second punching component 113, and a waste box 115. The first punching component 111 and the second punching component 113 are arranged opposite to each other. The first punching component 111 is used to punch a notch on the inner edge of the electrode 300, and the second punching component 113 is used to punch a notch on the outer edge of the electrode 300 or at the electrode tab 310. The waste box 115 is disposed below the first punching component 111 and the second punching component 113 and is used to receive punching waste.

[0070] Specifically, the first punching assembly 111 includes a first mold, a first cylinder, a first cutter, and a first die. The first mold is located on one edge of the electrode 300, the first die is mounted on the first mold, the first cylinder is mounted on the first mold, and the first cutter is connected to the first cylinder and punches the edge of the electrode 300 under the drive of the first cylinder, thereby forming a notch. During punching, the first cylinder provides power, the first cutter moves downward and enters the first die, punching a 1.5mm notch on the inner side of the electrode 300. The punched-out waste material falls into the waste box 115. When the waste box is full, it is pulled out and cleaned periodically.

[0071] The second punching assembly 113 includes a second mold, a second cylinder, a second cutter, and a second die. The first mold is located on the other edge of the electrode 300, the second die is mounted on the second mold, the second cylinder is mounted on the second mold, and the second cutter is connected to the second cylinder for transmission. Driven by the second cylinder, the cutter punches the edge of the electrode 300, thereby forming a notch. During punching, the second cylinder provides power, the second cutter moves downward and enters the second die, punching a notch on the outside of the electrode 300, and the punched waste falls into the waste box 115. The second cutter is a special-shaped cutter, punching a 1.5mm notch on one side and a slanted undercut on the other side. By controlling the movement of the electrode 300 on the mechanism, the relative position of the tab 310 in the undercut is controlled, and the size of the tab 310 on the left and right sides of the cutter edge determines the size of the tab 310 being punched. That is, by changing the relative position of the electrode 300 and the second cutter, a punching notch is formed at the edge of the electrode 300 and the tab 310. It should be noted that the notch here can simulate folded, flipped, or missing parts on the tab 310, thus facilitating detection by the image sensor. The image sensor determines whether it is a fold, flipped, or missing part by detecting the size and dimensions of the notch.

[0072] It should be noted that in this embodiment, the side of the electrode sheet 300 with the electrode tab 310 is located close to the second punching component 113, so that the second punching component 113 can complete the punching action on the electrode tab 310.

[0073] See Figure 3 The automatic sensing label mechanism 130 includes a mounting platform 131, a color mark sensor 133, a fixing plate 135, and a plate drive component 137. Both the color mark sensor 133 and the plate drive component 137 are mounted on the mounting platform 131. The color mark sensor 133 emits detection light towards the electrode 300 or the diaphragm 200. The fixing plate 135 is connected to the plate drive component 137 and is moved under or away from the color mark sensor 133 under the drive of the plate drive component 137. The fixing plate 135 also has color markings 139. The color mark sensor 133 detects the color markings 139 to complete the yellow label detection verification for defective electrode 300 and the blue label detection verification for defective diaphragm 200. Specifically, the fixing plate 135 has color markings 139, which include yellow and blue markings. In actual production, the electrode 300 is marked yellow, and the diaphragm 200 is marked blue. Under normal circumstances, the color mark sensor 133 emits detection light, but there is no signal when it is placed on the electrode 300 or the diaphragm 200. The board driver 137 drives the fixing plate 135 to extend, and there is a signal when the detection light shines on the color mark 139. The board driver 137 drives the fixing plate 135 to retract, and there is no signal when the detection light shines on the electrode 300 or the diaphragm 200. At this time, it indicates that the color mark sensor 133 is working properly, and the yellow mark detection verification for defective electrode 300 and the blue mark detection verification for defective diaphragm 200 are completed.

[0074] See Figure 4 In this embodiment, the labeling mechanism 150 includes a mounting plate 151, an adjusting member 153, an unwinding shaft 155, a rewinding shaft 157, and an adhesive block 159. The adjusting member 153 is movably mounted on the mounting plate 151 and is used to adjust the preset position of the label patch on the electrode 300. The unwinding shaft 155 and the rewinding shaft 157 are rotatably mounted on the mounting plate 151. The adhesive block 159 is located below the unwinding shaft 155 and is used to apply the label patch to the electrode 300. The adjusting member 153 is used for overall inward and outward adjustment, thereby adjusting the position of the label patch on the electrode 300. The label patch is a colored tape, such as yellow tape. The tape is placed on the reel 155 and passes through the tape attaching block 159. The label patch is then attached to the electrode 300 using the tape attaching block 159. The waste tape is returned to the take-up shaft 157 via the roller. The electrode 300 with the yellow tape / label patch is then inspected by the electrode 300 damage sensor to determine whether the electrode 300 damage sensor is intact.

[0075] It should be noted that the various security tests and verifications in this embodiment are essentially simulations of actual testing scenarios to verify whether the sensors in each testing stage are intact.

[0076] The safety inspection system provided in this embodiment punches notches at the edge of the electrode 300 and the tab 310 using a punching mechanism 110. An image sensor then detects the notch size, and based on the notch size, the system completes the verification of tab 310 folding / missing parts, folding, and electrode 300 damage. This eliminates the need for manual operation on the electrode 300 in conventional technologies, significantly improving efficiency. Simultaneously, an automatic sensing labeling mechanism 150 completes the verification of defective yellow labels on the electrode 300 and defective blue labels on the diaphragm 200. The labeling mechanism 150 affixes labeling patches to the edge of the electrode 300, and a damage sensor adds the labeling patches to complete the verification of damaged yellow labels on the electrode 300, eliminating the need for manual tape application and further improving efficiency. Compared to existing technologies, this invention provides a safety inspection method and system that can automatically complete various verifications without human intervention, offering high efficiency, good consistency, and eliminating uncontrollable human factors, greatly improving the reliability and safety of the equipment.

[0077] Second Embodiment

[0078] See also Figure 5This embodiment provides a safety item detection method applicable to the aforementioned safety item detection system. The basic structure, principle, and technical effects of the safety item detection system are the same as those in the first embodiment. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the first embodiment.

[0079] This embodiment provides a method for detecting security items, including the following steps:

[0080] S1: Use a CCD sensor to detect the image at the feed end of electrode 300 to complete the CCD safety test and verification of the folded head of electrode 300.

[0081] Specifically, firstly, the feed end of the electrode 300 is controlled to be fed into the equipment with a delay. Then, a CCD sensor is used to detect the image of the feed end of the electrode 300 to complete the CCD safety item detection and verification of the folded head of the electrode 300. A folded head of the electrode 300 appears as a shortened head in the image. In this embodiment, the detection method for insufficient feed of the electrode 300 head is controlled by a program, and the integrity of the CCD sensor is determined based on the CCD detection results and alarm records.

[0082] Normally, during the manual intervention stage, the electrode 300 head needs to be bent at a certain angle during the verification process. The angle of the head should be no less than or higher than a certain angle (e.g., 85° or 110°). In this embodiment, the corresponding measure is to ensure that the length of the head feed does not exceed a certain length (e.g., ±3mm), which can be controlled by adjusting the hysteresis time. Specifically, this can be achieved by delaying the feeding end of the electrode 300 to ensure that a small portion of the electrode 300 head falls within the field of view of the CCD sensor, thereby simulating the bending of the electrode 300 head and thus detecting whether the CCD sensor is intact.

[0083] S2: Use an image sensor to detect the size of the notch to complete the fold / missing detection verification of the tab 310.

[0084] S3: Use an image sensor to detect the size of the notch to complete the folding detection and verification.

[0085] S4: Use an image sensor to detect the size of the notch to complete the electrode 300 damage detection verification.

[0086] Specifically, steps S2, S3, and S4 can all be pre-operated using the punching mechanism 110. First, the punching mechanism 110 punches notches at the edge of the electrode 300 and at the tab 310. Then, an image sensor detects the size of the notches to verify the folding / missing parts, flipping, and breakage of the tab 310. Specifically, the image sensor detects the notches at the edge of the electrode 300 to verify breakage; and it detects the notches at the tab 310 to verify folding / missing parts and flipping. The punched notches can simulate folded, flipped, or missing parts on the tab 310, facilitating detection by the image sensor. The image sensor determines whether it is a fold, flip, or missing part by detecting the size and dimensions of the punch.

[0087] S5: The automatic sensing label mechanism 130 is used to complete the yellow label detection and verification of 300 defective electrode sheets.

[0088] S6: The automatic sensing label mechanism 130 is used to complete the blue label detection and verification of defective diaphragm 200.

[0089] Specifically, steps S5 and S6 can both be completed by the automatic sensing label mechanism 130. First, the color mark sensor 133 emits detection light; then, the fixed plate 135 with color mark 139 is moved back and forth so that the color mark 139 is aligned or misaligned with the detection light; the color mark sensor 133 detects the signal of the detection light aligning or misaligning with the color mark 139 to complete the yellow mark detection verification of defective electrode 300 and the blue mark detection verification of defective diaphragm 200; wherein, the color mark 139 includes a yellow mark and a blue mark.

[0090] During actual testing and verification, color markings 139 are affixed to the fixing plate 135. These color markings 139 include yellow and blue markings. In actual production, the electrode 300 is marked yellow, and the diaphragm 200 is marked blue. Under normal circumstances, the color mark sensor 133 emits detection light, but there is no signal when it is applied to either the electrode 300 or the diaphragm 200. The plate drive 137 drives the fixing plate 135 to extend, and there is a signal when the detection light shines on the color marking 139. The plate drive 137 drives the fixing plate 135 to retract, and there is no signal when the detection light shines on either the electrode 300 or the diaphragm 200. At this point, it indicates that the color mark sensor 133 is working properly, and the yellow marking detection verification for defective electrode 300 and the blue marking detection verification for defective diaphragm 200 are completed.

[0091] S7: Use the damage sensor to detect the label patch to complete the yellow label detection verification of the electrode 300 damage sensor.

[0092] Specifically, firstly, a labeling patch is affixed to the edge of the electrode 300 using the labeling mechanism 150; then, the damage sensor detects the labeling patch to complete the yellow label detection verification of the electrode 300 damage sensor. Specifically, in the labeling process, the preset position of the labeling patch on the electrode 300 is adjusted; then, the labeling mechanism 150 affixes the labeling patch to the edge of the electrode 300; the preset position is aligned with the detection position of the damage sensor. The labeling patch is colored tape, such as yellow tape. The tape is placed on the reel 155, passes through the tape applicator 159, and the labeling patch is affixed to the electrode 300 using the applicator 159. The waste tape returns to the take-up shaft 157 via the roller, and the electrode 300 with the yellow tape / labeling patch is detected by the electrode 300 damage sensor to determine whether the electrode 300 damage sensor is intact.

[0093] S8: Use the diaphragm 200 winding sensor to detect the misalignment value of the diaphragm 200 to complete the diaphragm 200 damage detection verification.

[0094] Specifically, the inside and outside positions of the diaphragm 200 are first controlled by the correction mechanism, and then the misalignment value of the diaphragm 200 is detected by the diaphragm 200 winding sensor to complete the diaphragm 200 damage detection and verification.

[0095] In this embodiment, steps S1-S8 do not have a clear order; they can be performed sequentially or simultaneously. The order of steps is not limited here.

[0096] The safety item detection method provided in this embodiment can be implemented using the following methods in actual operation:

[0097] 1. CCD Safety Item Detection and Verification for Bent Electrode 300 Head: Program-Controlled Method for Insufficient Insertion of Electrode 300 Head. Specifically, the amount of insertion of the electrode 300 head can be controlled by a program to detect whether the CCD sensor is intact.

[0098] 2. Detection and verification of tab 310 folding / missing parts: An additional detection method for the tab 310 bending / punching mechanism 110 is added. Specifically, the punching mechanism 110 can be used to punch a notch in the tab 310. Then, an image sensor is used to detect the size and dimensions of the notch to determine whether tab 310 is folded / missing. The image sensor's detection function for tab 310 folding / missing parts can be verified based on the sensor's determination result.

[0099] 3. Verification of tab 310 folding detection at the winding point: Add a detection method for the tab 310 bending / punching mechanism 110. Specifically, the punching mechanism 110 can punch a notch in the tab 310, and then the size and shape of the notch can be detected by an image sensor to determine whether folding has occurred. The detection result of the image sensor can also be used to check whether the image sensor's tab 310 folding detection function is intact.

[0100] 4. Electrode 300 damage detection verification: Add a punching mechanism 110 detection method. Specifically, the punching mechanism 110 can be used to punch a notch at the edge of the electrode 300, and then an image sensor can be used for detection. The image sensor's damage detection function for the electrode 300 can be checked based on the image sensor's judgment result.

[0101] 5. Verification of yellow label detection for defective electrode 300 sensors: Add an automatic sensing label mechanism for detection method 130.

[0102] 6. Verification of yellow label detection for electrode 300 damaged sensor: Add labeling mechanism 150 detection method.

[0103] 7. Diaphragm 200 defective product sensor detection blue label detection verification: Add automatic sensing label mechanism 130 detection method.

[0104] 8. Diaphragm 200 winding sensor damage detection verification: Program correction control method for detecting the inner and outer positions of diaphragm 200.

[0105] In summary, the safety inspection method provided in this embodiment punches notches at the edge of the electrode 300 and the tab 310 using the punching mechanism 110. Then, an image sensor detects the size of the notches, and the detection and verification of folding / missing tabs 310, folding, and electrode 300 damage are completed based on the notch size. This eliminates the need for manual operation on the electrode 300 in conventional techniques, significantly improving efficiency. Simultaneously, the automatic sensing labeling mechanism 150 completes the yellow label detection and verification of defective electrode 300 and blue label detection and verification of defective diaphragm 200. Furthermore, the labeling mechanism 150 affixes identification patches to the edge of the electrode 300, and the damage sensor, with the added identification patches, completes the yellow label detection and verification of damaged electrode 300, further eliminating the need for manual tape application and improving efficiency. Compared with existing technologies, this invention provides a safety item detection method and system that can automatically complete various detection and verification processes without human intervention. It is highly efficient, consistent, and free from uncontrollable human factors, greatly improving the reliability and safety of the equipment.

[0106] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention 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 the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method for detecting safety items, characterized in that, include: The electrode is fed into the equipment with a delayed feeding end. The image of the electrode feeding end is detected by a CCD sensor to complete the CCD safety item detection and verification of electrode head folding. By delaying the feeding end of the electrode, a small part of the electrode head falls within the field of view of the CCD sensor, thereby simulating the situation of electrode head folding and thus completing the CCD safety item detection and verification of electrode head folding. A punching mechanism is used to punch notches at the edge of the electrode and the tab. An image sensor is used to detect the size of the notches to complete the detection and verification of tab folding, missing and flipping and electrode damage. The image sensor's judgment result is used to check whether the image sensor's function of detecting tab folding, missing and flipping is intact. An automatic sensing label mechanism is used to complete the yellow label detection and verification of defective electrode sheets and the blue label detection and verification of defective diaphragms: a color mark sensor emits detection light; a fixed plate with color markings is moved back and forth to align or offset the color markings with the detection light; the color mark sensor detects the signal indicating that the detection light is aligned or offset with the color markings to complete the yellow label detection and verification of defective electrode sheets and the blue label detection and verification of defective diaphragms; wherein, the color markings include yellow and blue markings, and the fixed plate is affixed with color markings; A labeling mechanism is used to attach labeling patches to the edge of the electrode sheet, and a damage sensor is used to detect the labeling patches to complete the yellow label detection and verification of electrode sheet damage. The diaphragm is controlled by a correction mechanism, and the diaphragm misalignment is detected by a diaphragm winding sensor to complete the diaphragm damage detection and verification.

2. The safety item detection method according to claim 1, characterized in that, The steps for detecting and verifying electrode tab folding, missing and folded tabs, and electrode breakage using an image sensor include: The image sensor is used to detect notches at the edge of the electrode to complete the electrode damage detection and verification. The image sensor detects gaps at the tabs to verify tab folding, missing parts, and flipping.

3. The safety item detection method according to claim 1, characterized in that, The steps of affixing labeling patches to the edge of the electrode using a labeling mechanism include: Adjust the preset position of the label patch on the electrode; A labeling mechanism is used to attach label sheets to the edges of the electrode sheets; The preset position is aligned with the detection position of the damage sensor.

4. A safety item detection system based on the detection method according to any one of claims 1-3, characterized in that, include: The punching mechanism is used to punch notches at the edges of the electrode plates and at the electrode tabs; An image sensor is used to detect the size of the notch to complete the detection and verification of tab folding, missing and folded tabs and electrode breakage. An automatic sensing label mechanism is used to complete the yellow label detection and verification of defective electrode sheets and the blue label detection and verification of defective diaphragms; Labeling mechanism, used to attach label patches to the edge of the electrode sheet; A damage sensor is used to detect the label patch to complete the yellow label detection verification of the electrode damage sensor.

5. The safety item detection system according to claim 4, characterized in that, The corner punching mechanism includes a first corner punching component, a second corner punching component, and a waste box. The first corner punching component and the second corner punching component are arranged opposite to each other. The first corner punching component is used to punch a notch on the inner edge of the electrode sheet, and the second corner punching component is used to punch a notch on the outer edge of the electrode sheet or at the electrode tab. The waste box is arranged below the first corner punching component and the second corner punching component and is used to receive punching waste.

6. The safety item detection system according to claim 4, characterized in that, The automatic sensing label mechanism includes a mounting platform, a color mark sensor, a fixing plate, and a plate drive component. The color mark sensor and the plate drive component are both mounted on the mounting platform. The color mark sensor is used to emit detection light to the electrode or diaphragm. The fixing plate is connected to the plate drive component and is used to move under or away from the color mark sensor under the drive of the plate drive component. The fixing plate is also provided with a color mark. The color mark sensor is used to detect the color mark to complete the yellow mark detection verification for defective electrode products and the blue mark detection verification for defective diaphragm products.

7. The safety item detection system according to claim 4, characterized in that, The labeling mechanism includes a mounting plate, an adjusting component, an unwinding shaft, a rewinding shaft, and an adhesive block. The adjusting component is movably mounted on the mounting plate and is used to adjust the preset position of the label patch on the electrode. The unwinding shaft and the rewinding shaft are rotatably mounted on the mounting plate. The adhesive block is located below the unwinding shaft and is used to apply the label patch to the electrode.

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