Pole piece flaw marking method

Abstract

The application discloses a kind of pole piece flaw identification methods, suitable for pole piece winding and unwinding device, winding and unwinding device includes feeding assembly and discharging assembly, feeding assembly and discharging assembly are respectively arranged in the feeding end and discharging end of coating ink-jet printing device;Feeding assembly is equipped with first detection mechanism and second detection mechanism, first detection mechanism and second detection mechanism are respectively arranged in the opposite side of base material, and first detection mechanism and second detection mechanism are used to detect adhesive tape on base material;Discharging assembly is equipped with third detection mechanism, distance measuring mechanism, labeling mechanism and review mechanism, third detection mechanism detects the flaw pole piece on base material, distance measuring mechanism measures the conveying distance of base material, labeling mechanism sticks flaw identification on base material, and review mechanism detects the accuracy of flaw identification sticking.The winding and unwinding device of the application can realize the automatic identification of the defective position of base material, with high identification accuracy and low error rate, thereby improving the overall yield of battery product.

Description

Technical Field

[0001] This application relates to the field of battery electrode processing equipment technology, and in particular to a method for identifying electrode defects. Background Technology

[0002] In the production process of battery cell electrodes, the electrode substrate needs to be coated or printed with materials at intervals along its length, and then cut to form individual electrodes. In this production scenario, the electrode substrate is usually supplied in roll form; when one roll of substrate is about to run out and the next roll is switched, in order to ensure the continuity of substrate supply, the joint between the two rolls of substrate needs to be connected and fixed with tape.

[0003] Meanwhile, during the production process of coating or printing dressings on substrates, due to factors such as equipment operating precision, material physical properties, and environmental cleanliness, some substrate areas are prone to process defects such as uneven dressing thickness, localized missed coatings, and foreign matter inclusions. These defective areas will form defective electrode sheets after cutting. Therefore, before the subsequent cutting process, it is necessary to accurately mark the tape joints and defective electrode sheet areas on the substrate so that defective electrode sheets can be sorted and removed after subsequent cutting.

[0004] Currently, the industry relies heavily on manual marking to identify defective locations on substrates. This not only requires significant manpower but also results in a high error rate, ultimately affecting the overall yield of battery cells and making it difficult to meet the demands of large-scale, high-precision battery cell production. Summary of the Invention

[0005] To address the aforementioned technical issues, this application proposes a method for identifying electrode defects, applicable to electrode winding and unwinding devices. This method enables automatic identification and verification of defective locations on the substrate, achieving high identification accuracy and low error rate, thereby improving the overall yield of battery cell products.

[0006] The electrode winding and unwinding apparatus according to the first aspect of this application includes:

[0007] The feeding assembly is equipped with a first detection mechanism and a second detection mechanism. The first detection mechanism and the second detection mechanism are respectively disposed on opposite sides of the substrate. The first detection mechanism and the second detection mechanism are used to detect the tape on the substrate.

[0008] The feeding assembly is equipped with a third inspection mechanism, which detects defective electrode sheets on the substrate.

[0009] A ranging mechanism measures the conveying distance of the substrate;

[0010] A labeling mechanism is installed on the feeding assembly, and the labeling mechanism affixes defect labels to the tape and defective electrode on the substrate.

[0011] The review agency checks the accuracy of the defect label affixing.

[0012] The feeding component is located at the feeding end of the dressing inkjet printing device, and the unloading component is located at the unloading end of the dressing inkjet printing device.

[0013] In some embodiments of this application, the feeding assembly is equipped with a first tension detection roller and a first swing roller mechanism, and the substrate is wound around the first tension detection roller and the first swing roller mechanism;

[0014] The first tension detection roller detects the tension of the substrate, and the first swing roller mechanism adjusts the tension of the substrate.

[0015] In some embodiments of this application, the feeding assembly is equipped with a second tension detection roller and a second swing roller mechanism, and the substrate is wound around the second tension detection roller and the second swing roller mechanism;

[0016] The second tension detection roller detects the tension of the substrate, and the second swing roller mechanism adjusts the tension of the substrate.

[0017] In some embodiments of this application, the feeding assembly is equipped with a traction wheel, the traction wheel is in close contact with the substrate, and the traction wheel rotates axially to drive the substrate to move;

[0018] The ranging mechanism measures the number of rotations of the traction wheel and converts it into the conveying distance of the substrate.

[0019] In some embodiments of this application, the feeding assembly is provided with a first guide wheel, the unloading assembly is provided with a second guide wheel, the substrate moves horizontally between the first guide wheel and the second guide wheel, and the dressing inkjet printing device is disposed between the first guide wheel and the second guide wheel.

[0020] In some embodiments of this application, the feeding assembly is equipped with a roller mechanism, which is disposed between the first guide wheel and the second guide wheel;

[0021] The roller mechanism includes a support wheel that is in contact with the substrate.

[0022] In some embodiments of this application, the first detection mechanism and the second detection mechanism are spaced apart along the conveying direction of the substrate.

[0023] In some embodiments of this application, dust removal mechanisms are provided on both opposite sides of the substrate, and the dust removal mechanisms clean impurities from the surface of the substrate;

[0024] The feeding assembly and / or the unloading assembly are equipped with the dust removal mechanism.

[0025] The electrode defect identification method of this application is applicable to the above-mentioned electrode unwinding and rewinding device, and includes the following steps:

[0026] The first detection mechanism detects the tape and sends a first position signal, the second detection mechanism detects the tape and sends a second position signal, and the third detection mechanism detects the defective electrode and sends a third position signal.

[0027] The controller presets a first preset distance corresponding to the first position signal, a second preset distance corresponding to the second position signal, and a third preset distance corresponding to the third position signal;

[0028] The controller acquires the first position signal and matches it with a corresponding first preset distance, acquires the second position signal and matches it with a corresponding second preset distance, and acquires the third position signal and matches it with a corresponding third preset distance;

[0029] The controller acquires the substrate conveying distance of the ranging mechanism; when the substrate conveying distance reaches a first preset distance, a second preset distance, or a third preset distance, the controller controls the labeling mechanism to affix defect labels to the substrate.

[0030] In some embodiments of this application, the controller presets a first detection distance corresponding to a first position signal, a second detection distance corresponding to a second position signal, and a third detection distance corresponding to a third position signal;

[0031] The controller acquires the first position signal and matches it with the corresponding first detection distance, acquires the second position signal and matches it with the corresponding second detection distance, acquires the third position signal and matches it with the corresponding third detection distance;

[0032] The controller acquires the substrate conveying distance of the ranging mechanism; when the substrate conveying distance reaches the first detection distance, the second detection distance, or the third detection distance, the controller controls the verification mechanism to detect the defect mark; if the verification mechanism does not detect the defect mark, the verification mechanism sends a warning signal.

[0033] The winding and unwinding device of this application, by employing the above-described electrode defect identification method, has at least the following beneficial effects:

[0034] The adhesive tape on the substrate is inspected by the first and second inspection agencies, and defective electrode sheets are inspected by the third inspection agency. Then, a labeling agency affixes defect labels to the defective electrode sheets, which facilitates the quick location of defective electrode sheets for sorting and removal. At the same time, it reduces labor costs and lowers the labeling error rate. The verification agency further verifies and confirms the defect labels to avoid missing any labels, further reducing the labeling error rate and improving the overall yield of battery cell products. This meets the needs of large-scale, high-precision battery cell production.

[0035] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0036] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0037] Figure 1 This is an isometric view of an embodiment of this application;

[0038] Figure 2 This is a cross-sectional view of an embodiment of this application;

[0039] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0040] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0041] Figure 5 for Figure 2 A magnified view of point C in the middle.

[0042] Icon labels:

[0043] The feeding assembly 100, the first detection mechanism 110, the second detection mechanism 120, the first tension detection roller 130, the first swing roller mechanism 140, the first guide wheel 150, the feeding mechanism 160, and the manual belt receiving platform 170 are included.

[0044] The components include: feeding assembly 200, third detection mechanism 210, second tension detection roller 220, second swing roller mechanism 230, traction wheel 240, second guide wheel 250, support roller mechanism 260, and feeding mechanism 270.

[0045] Distance measuring mechanism 300;

[0046] Labeling facility 400;

[0047] 500 review agencies;

[0048] Dust removal mechanism 600. Detailed Implementation

[0049] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0050] In the description of this application, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0051] In the description of this application, "multiple" refers to two or more. The use of "first" and "second" is for the purpose of distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features indicated, or the order in which the technical features are indicated.

[0052] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0053] Reference Figures 1 to 5 This application discloses an electrode winding and unwinding device and an electrode defect identification method. The electrode winding and unwinding device includes a feeding assembly 100 and an unloading assembly 200, as shown in the reference. Figure 1 , Figure 2 As shown, the feeding assembly 100 and the unloading assembly 200 are horizontally spaced apart. The feeding assembly 100 is located at the feeding end of the coating inkjet printing device, and the unloading assembly 200 is located at the unloading end of the coating inkjet printing device. The coating inkjet printing device is used to print coatings onto a substrate to form electrode sheets. The feeding assembly 100 is provided with a feeding mechanism 160, and the unloading assembly 200 is provided with a unloading mechanism 270.

[0054] In some embodiments of this application, reference is made to Figure 3 , Figure 4As shown, the feeding assembly 100 is equipped with a first detection mechanism 110 and a second detection mechanism 120. The first detection mechanism 110 and the second detection mechanism 120 are used to detect the tape on the substrate. The first detection mechanism 110 and the second detection mechanism 120 are respectively arranged on opposite sides of the substrate. Specifically, the first detection mechanism 110 and the second detection mechanism 120 can use the same detection mechanism, such as a color mark sensor. During the process of conveying the substrate roll for printing the coating, when one roll of substrate is about to be exhausted and the next roll is switched, in order to ensure the continuity of substrate conveying, the joint between the two rolls of substrate is usually connected and fixed with tape. However, substrate with tape attached, even if the coating is printed on the tape, cannot be used as a normal electrode. Therefore, the tape position needs to be marked to facilitate the subsequent sorting and rejection of the electrode.

[0055] Furthermore, both sides of the substrate need to be printed with adhesive, and the joint between the two rolls of substrate usually only has tape on one side. To avoid omissions, a first inspection mechanism 110 and a second inspection mechanism 120 are provided to inspect the two sides of the substrate respectively.

[0056] In some embodiments of this application, the first detection mechanism 110 and the second detection mechanism 120 may be correspondingly arranged or spaced apart along the transport direction of the substrate. Generally, it is preferred that the first detection mechanism 110 and the second detection mechanism 120 are spaced apart along the transport direction of the substrate, for example... Figure 3 As shown, this is to shorten the length of the feeding assembly 100 and reduce its volume.

[0057] In a specific embodiment of this application, the feeding component 100 is provided with a manual splicing platform 170 to facilitate manual splicing of two rolls of substrate.

[0058] In some embodiments of this application, the feeding assembly 200 is equipped with a third inspection mechanism 210, which inspects defective electrode sheets on the substrate. Specifically, the coating inkjet printing device prints coating material at intervals on the substrate to form multiple electrode sheets. When the electrode sheets pass through the third inspection mechanism 210, the third inspection mechanism 210 inspects the quality of the electrode sheets. If the electrode sheets fail to meet standards in terms of curing quality, etc., the defective electrode sheets are marked. The third inspection mechanism 210 may employ inspection equipment such as a camera.

[0059] In some embodiments of this application, the unwinding and rewinding device further includes a ranging mechanism 300, a labeling mechanism 400, and a verification mechanism 500. The ranging mechanism 300 measures the conveying distance of the substrate, the labeling mechanism 400 is mounted on the unloading assembly 200, and the labeling mechanism 400 affixes defect labels to the substrate; the verification mechanism 500 detects the accuracy of the defect label affixing. Specifically, refer to... Figure 1 , Figure 2 , Figure 4As shown, the first inspection mechanism 110 and the second inspection mechanism 120 are both installed on the feeding assembly 100, while the labeling mechanism 400 is installed on the unloading assembly 200. Therefore, after the first inspection mechanism 110 and the second inspection mechanism 120 mark the tape, the substrate needs to be moved below the labeling mechanism 400 before the labeling mechanism 400 will affix a defect label to the tape position. Therefore, the distance measuring mechanism 300 is needed to measure the distance the substrate has moved. The verification mechanism 500 is to prevent the labeling mechanism 400 from missing any defect labels, thereby improving the accuracy of defect label affixing.

[0060] Similarly, refer to Figure 2 , Figure 4 As shown, along the conveying direction of the substrate, the third inspection mechanism 210 is located in front of the labeling mechanism 400. Therefore, after the third mechanism marks the defective electrode, the labeling mechanism 400 will only affix the defective mark to the defective electrode when the substrate needs to be moved below the labeling mechanism 400.

[0061] In a specific embodiment of this application, since both the tape and the defective electrode are considered defects, the labeling mechanism 400 affixes only one type of label; that is, the same defect label is applied to both the tape and the defective electrode. The labeling mechanism 400 and the verification mechanism 500 of this application can procure suitable existing technologies based on actual circumstances, and are not limited in this embodiment.

[0062] In some embodiments of this application, the feeding assembly 200 is equipped with a traction wheel 240, which is in close contact with the substrate. The traction wheel 240 rotates axially to move the substrate. The distance measuring mechanism 300 measures the number of rotations of the traction wheel 240 and converts it into the conveying distance of the substrate. Specifically, refer to... Figure 2 , Figure 5 As shown, the traction wheel 240 is connected to the drive mechanism and drives its axial rotation. The traction wheel 240 moves the substrate through axial rotation. The distance measuring mechanism 300 can use an encoder or other equipment to calculate the conveying distance of the substrate through the traction wheel 240. The distance measuring mechanism 300 can use an encoder or other solution for distance measurement, and no specific limitation is made in this embodiment.

[0063] In some embodiments of this application, reference is made to Figure 2 As shown, in order to facilitate the printing of dressings on the substrate by the dressing inkjet printing device, the feeding assembly 100 is provided with a first guide wheel 150, the unloading assembly 200 is provided with a second guide wheel 250, the substrate moves horizontally between the first guide wheel 150 and the second guide wheel 250, and the dressing inkjet printing device is set between the first guide wheel 150 and the second guide wheel 250.

[0064] In some embodiments of this application, reference is made to Figure 2As shown, the unloading assembly 200 is equipped with a roller mechanism 260, which is positioned between the first guide wheel 150 and the second guide wheel 250. The roller mechanism 260 includes a support wheel that is in contact with the substrate. The roller mechanism 260 extends toward the loading assembly 100. Since the substrate itself has a certain length, the support wheel is positioned to contact the substrate to support it, preventing the substrate between the first guide wheel 150 and the second guide wheel 250 from sagging excessively due to its own weight, which would affect the printing quality.

[0065] In some embodiments of this application, reference is made to Figure 3 As shown, the feeding assembly 100 is equipped with a first tension detection roller 130 and a first swing roller mechanism 140. The substrate is wound around the first tension detection roller 130 and the first swing roller mechanism 140; the first tension detection roller 130 detects the tension of the substrate, and the first swing roller mechanism 140 adjusts the tension of the substrate. Similarly, referring to... Figure 4 As shown, the feeding assembly 200 is equipped with a second tension detection roller 220 and a second swing roller mechanism 230. The substrate is wound around the second tension detection roller 220 and the second swing roller mechanism 230. The second tension detection roller 220 detects the tension of the substrate, and the second swing roller mechanism 230 adjusts the tension of the substrate.

[0066] The first tension detection roller 130 and the second tension detection roller 220 preferably adopt the same structure to reduce manufacturing costs. Similarly, the first swing roller mechanism 140 and the second swing roller mechanism 230 preferably adopt the same structure to reduce manufacturing and maintenance costs. The first swing roller mechanism 140 and the second swing roller mechanism 230 can adopt various technical solutions according to actual conditions, for example, they can adopt... Figure 3 , Figure 4 The substrate is tensioned by driving one of the rollers to swing, but depending on the actual situation, the substrate can also be tensioned by driving one roller to move laterally or to lift vertically.

[0067] In some embodiments of this application, dust removal mechanisms 600 are provided on both opposite sides of the substrate to clean impurities from the substrate surface; the feeding assembly 100 and / or the unloading assembly 200 are equipped with dust removal mechanisms 600. Specifically, refer to... Figure 3 As shown, the feeding assembly 100 is equipped with two dust removal mechanisms 600, which are respectively located on opposite sides of the substrate; see reference. Figure 4 As shown, the feeding assembly 200 is also equipped with two dust removal mechanisms 600, which are respectively located on opposite sides of the substrate. In this embodiment, the dust removal mechanism 600 is preferably a magnetic dust removal mechanism 600. The specific installation positions of the multiple dust removal mechanisms 600 can be set according to the actual situation, and are not limited in this embodiment.

[0068] In some embodiments of this application, the electrode defect identification method applicable to the above-mentioned electrode unwinding and rewinding device includes the following steps:

[0069] The first detection mechanism 110 detects the tape and sends a first position signal; the second detection mechanism 120 detects the tape and sends a second position signal; the third detection mechanism 210 detects the defective electrode and sends a third position signal.

[0070] The controller presets a first preset distance corresponding to the first position signal, a second preset distance corresponding to the second position signal, and a third preset distance corresponding to the third position signal;

[0071] The controller acquires a first position signal and matches it with a corresponding first preset distance, acquires a second position signal and matches it with a corresponding second preset distance, and acquires a third position signal and matches it with a corresponding third preset distance.

[0072] The controller acquires the substrate conveying distance of the ranging mechanism 300; when the substrate conveying distance reaches the first preset distance, the second preset distance, or the third preset distance, the controller controls the labeling mechanism 400 to affix defect labels to the substrate.

[0073] In some embodiments of this application, the controller further presets a first detection distance corresponding to the first position signal, a second detection distance corresponding to the second position signal, and a third detection distance corresponding to the third position signal; since the verification mechanism 500 is located behind the labeling mechanism 400 along the substrate conveying method, the first detection distance is greater than the first preset distance, the second detection distance is greater than the second preset distance, and the third detection distance is greater than the third preset distance.

[0074] The controller can also acquire the first position signal, the second position signal, the third position signal, and the substrate conveying distance of the ranging mechanism 300. The controller acquires the first position signal and matches it with the corresponding first detection distance, acquires the second position signal and matches it with the corresponding second detection distance, and acquires the third position signal and matches it with the corresponding third detection distance.

[0075] The controller acquires the substrate conveying distance of the ranging mechanism 300; when the substrate conveying distance reaches the first detection distance, the second detection distance, or the third detection distance, the controller controls the verification mechanism 500 to detect the defect mark; if the verification mechanism 500 does not detect the defect mark, the verification mechanism 500 sends a warning signal, such as an audible and visual alarm.

[0076] The unwinding and winding device of this application embodiment detects the tape on the substrate through the first detection mechanism 110 and the second detection mechanism 120, detects defective electrode sheets through the third detection mechanism 210, and then affixes defect labels to the defective electrode sheet locations through the labeling mechanism 400, which facilitates the rapid positioning of defective electrode sheets for sorting and removal; at the same time, it reduces labor costs and lowers the labeling error rate; the verification mechanism 500 further verifies and confirms the defect labels, avoiding omissions in affixing defect labels, further reducing the labeling error rate, improving the overall yield of battery cell products, and meeting the needs of large-scale, high-precision battery cell production.

[0077] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," 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 this application. In this specification, the 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. In addition, those skilled in the art can combine the different embodiments or examples described in this specification.

[0078] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application.

Claims

1. A method for identifying electrode defects, applicable to electrode unwinding and rewinding devices, characterized in that, The electrode unwinding and rewinding device includes: The feeding assembly is equipped with a first detection mechanism and a second detection mechanism. The first detection mechanism and the second detection mechanism are respectively disposed on opposite sides of the substrate. The first detection mechanism and the second detection mechanism are used to detect the tape on the substrate. The feeding assembly is equipped with a third inspection mechanism, which detects defective electrode sheets on the substrate. A ranging mechanism measures the conveying distance of the substrate; A labeling mechanism is installed on the feeding assembly. The labeling mechanism affixes defect labels to the tape and defective electrode on the substrate. The same defect label is affixed to both the tape and the defective electrode. The review agency checks the accuracy of the defect label affixing. The feeding component is located at the feeding end of the dressing inkjet printing device, and the unloading component is located at the unloading end of the dressing inkjet printing device. The controller acquires the detection signals from the first detection mechanism, the second detection mechanism, and the third detection mechanism, and controls the labeling mechanism to affix defect labels. The defect identification method includes the following steps: The first detection mechanism detects the tape and sends a first position signal, the second detection mechanism detects the tape and sends a second position signal, and the third detection mechanism detects the defective electrode and sends a third position signal. The controller presets a first detection distance corresponding to the first position signal, a second detection distance corresponding to the second position signal, and a third detection distance corresponding to the third position signal; The controller acquires the first position signal and matches it with the corresponding first detection distance, acquires the second position signal and matches it with the corresponding second detection distance, and acquires the third position signal and matches it with the corresponding third detection distance. The controller acquires the substrate conveying distance of the ranging mechanism; when the substrate conveying distance reaches the first detection distance, the second detection distance, or the third detection distance, the controller controls the verification mechanism to detect the defect mark; if the verification mechanism does not detect the defect mark, the verification mechanism sends a warning signal.

2. The electrode defect identification method according to claim 1, characterized in that, The feeding assembly is equipped with a first tension detection roller and a first swing roller mechanism, and the substrate is wound around the first tension detection roller and the first swing roller mechanism. The first tension detection roller detects the tension of the substrate, and the first swing roller mechanism adjusts the tension of the substrate.

3. The electrode defect identification method according to claim 1, characterized in that, The feeding assembly is equipped with a second tension detection roller and a second swing roller mechanism, and the substrate is wound around the second tension detection roller and the second swing roller mechanism; The second tension detection roller detects the tension of the substrate, and the second swing roller mechanism adjusts the tension of the substrate.

4. The electrode defect identification method according to claim 1, characterized in that, The feeding assembly is equipped with a traction wheel, which is in close contact with the substrate. The traction wheel rotates axially to move the substrate. The ranging mechanism measures the number of rotations of the traction wheel and converts it into the conveying distance of the substrate.

5. The electrode defect identification method according to claim 1, characterized in that, The feeding assembly is provided with a first guide wheel, the unloading assembly is provided with a second guide wheel, the substrate moves horizontally between the first guide wheel and the second guide wheel, and the dressing inkjet printing device is disposed between the first guide wheel and the second guide wheel.

6. The electrode defect identification method according to claim 5, characterized in that, The feeding assembly is equipped with a roller mechanism, which is disposed between the first guide wheel and the second guide wheel; The roller mechanism includes a support wheel that is in contact with the substrate.

7. The electrode defect identification method according to claim 1, characterized in that, The first testing mechanism and the second testing mechanism are arranged at intervals along the conveying direction of the substrate.

8. The electrode defect identification method according to claim 1, characterized in that, Dust removal mechanisms are provided on both opposite sides of the substrate, and the dust removal mechanisms clean impurities from the surface of the substrate. The feeding assembly and / or the unloading assembly are equipped with the dust removal mechanism.

9. The electrode defect identification method according to claim 1, characterized in that, The controller presets a first preset distance corresponding to the first position signal, a second preset distance corresponding to the second position signal, and a third preset distance corresponding to the third position signal; The controller acquires the first position signal and matches it with a corresponding first preset distance, acquires the second position signal and matches it with a corresponding second preset distance, and acquires the third position signal and matches it with a corresponding third preset distance. The controller acquires the substrate conveying distance of the ranging mechanism; when the substrate conveying distance reaches a first preset distance, a second preset distance, or a third preset distance, the controller controls the labeling mechanism to affix defect labels to the substrate.

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