Method, System, Device and Storage Medium for Identifying Abnormal Position of Diaphragm

Abstract

This application belongs to the technical field of battery cell manufacturing, and discloses a method, system, device and storage medium for identifying abnormal positions of diaphragm. The method includes: performing coating quality detection on the coating film areas in the diaphragm to be detected, where the diaphragm includes at least one coating film area; determining quality abnormal information based on the quality detection results, and the quality abnormal information includes the coating film area where the coating quality abnormal area is located, as well as the abnormal start position and abnormal end position of the coating quality abnormal area; sending an identification signal to the identification device based on the quality abnormal information, and the identification signal is used to instruct the identification device to print an abnormal start identification and an abnormal end identification at the corresponding abnormal start position and abnormal end position in the non-coating film area of the diaphragm respectively, and the content of the abnormal start identification and the abnormal end identification indicates the coating film area where the coating quality abnormal area is located. This method can reduce the number of identification devices for identifying coating quality abnormal areas and reduce production costs.

Description

Technical Field

[0001] The present application relates to the technical field of cell manufacturing, and particularly to a method, system, device and storage medium for identifying abnormal positions of diaphragm sheets. Background Art

[0002] The coating of electrode diaphragm sheets is a key step in the manufacturing process of lithium-ion batteries. It involves uniformly coating active materials on current collectors to form electrodes. Coating quality inspection is a very important quality control step, which ensures that the indicators of the coatings of electrode diaphragm sheets meet the design requirements, thereby guaranteeing the performance and consistency of the batteries.

[0003] In related technologies, generally, a corresponding laser is set for each coating film area in the diaphragm sheet, and the quality abnormal area is marked on the corresponding coating film area through the laser. Then, in the case of producing diaphragm sheets with multiple coating film areas, the support of multiple lasers is required, resulting in too high production costs.

[0004] The above content is only used to assist in understanding the technical solution of the present application, and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The main purpose of the present application is to provide a method, system, device and storage medium for identifying abnormal positions of diaphragm sheets, which can reduce the number of identification devices for identifying coating quality abnormal areas, thereby reducing production costs.

[0006] In a first aspect, the present application provides a method for identifying abnormal positions of diaphragm sheets, which is executed by a detection device. The method includes the following steps:

[0007] Perform coating quality inspection on the coating film areas in the diaphragm sheet to be detected. The diaphragm sheet includes at least one coating film area;

[0008] Determine quality abnormal information based on the quality inspection results. The quality abnormal information includes the coating film area where the coating quality abnormal area is located, as well as the abnormal start position and abnormal end position of the coating quality abnormal area;

[0009] Send an identification signal to the identification device based on the quality abnormal information. The identification signal is used to instruct the identification device to print an abnormal start identification and an abnormal end identification respectively at the abnormal start position and the abnormal end position corresponding to the non-coating film area of the diaphragm sheet. The content of the abnormal start identification and the abnormal end identification indicates the coating film area where the coating quality abnormal area is located.

[0010] In an embodiment of the present application, the coating quality of the coating film area on the diaphragm to be detected is detected, and quality anomaly information is determined based on the quality detection result. Since the quality anomaly information includes the coating film area where the coating quality anomaly area is located, as well as the start position and end position of the anomaly in the coating quality anomaly area, an identification signal is sent to the identification device based on the quality anomaly information, instructing the identification device to print a start anomaly identification and an end anomaly identification at the start position and end position of the anomaly respectively in the non-coating film area of the diaphragm. Moreover, the content of the start anomaly identification and the end anomaly identification also indicates the coating film area where the coating quality anomaly area is located. Therefore, subsequently, the diaphragm section where the coating quality anomaly area is located can be determined from the diaphragm based on the start anomaly identification and the end anomaly identification. Then, based on the coating film area indicated by the content of the start anomaly identification and the end anomaly identification, the coating quality anomaly area can be located, that is, the overlapping area of the coating film area and the diaphragm section. Therefore, this diaphragm anomaly position identification scheme can accurately identify the specific position of the coating quality anomaly area on the diaphragm. And regardless of which coating film area the coating quality anomaly area exists in, the identification is printed in the non-coating film area of the diaphragm. Then, the coating quality anomaly areas of multiple coating film areas can be identified by one identification device, without setting an identification device for each coating film area, thus reducing the number of identification devices for identifying the coating quality anomaly areas and lowering the production cost.

[0011] In some embodiments, the sending the identification signal to the identification device based on the quality anomaly information includes:

[0012] Determining a first time point when the start position of the anomaly passes through the identification device and a second time point when the end position of the anomaly passes through the identification device;

[0013] Based on the first time point and the second time point, sending the identification signal to the identification device, where the identification signal is used to instruct the identification device to print the start anomaly identification in the non-coating film area at the first time point and print the end anomaly identification in the non-coating film area at the second time point.

[0014] Since the first time point is the time point when the start position of the anomaly passes through the identification device and the second time point is the time point when the end position of the anomaly passes through the identification device, therefore, sending the identification signal to the identification device to instruct the identification device to print the start anomaly identification in the non-coating film area at the first time point and print the end anomaly identification in the non-coating film area at the second time point, then the start anomaly identification and the end anomaly identification exactly correspond to the start position and end position of the coating quality anomaly area, facilitating the subsequent accurate positioning of the coating quality anomaly area based on the start position and end position of the anomaly.

[0015] In some embodiments, determining the first time point when the abnormal starting position passes through the identification device and the second time point when the abnormal ending position passes through the identification device includes:

[0016] Determining the transmission duration required for any position on the diaphragm to be transmitted from the detection device to the identification device according to the distance between the detection device and the identification device and the transmission speed of the diaphragm;

[0017] Based on the third time point when the abnormal starting position passes through the detection device and the transmission duration, determining the first time point, and based on the fourth time point when the abnormal ending position passes through the detection device and the transmission duration, determining the second time point.

[0018] Since the third time point is the time point when the abnormal starting position passes through the detection device, and the transmission duration is the duration required for any position on the diaphragm to be transmitted from the detection device to the identification device, that is, the duration for the abnormal starting position to be transmitted from the detection device to the identification device. Therefore, based on the third time point and this transmission duration, the first time point when the abnormal starting position passes through the identification device can be accurately determined. Similarly, since the fourth time point is the time point when the abnormal ending position passes through the detection device, and this transmission duration is also the duration for the abnormal ending position to be transmitted from the detection device to the identification device. Therefore, based on the fourth time point and this transmission duration, the second time point when the abnormal ending position passes through the identification device can be accurately determined.

[0019] In some embodiments, based on the first time point and the second time point, sending the identification signal to the identification device includes:

[0020] Sending a first identification signal to the identification device at the first time point, and sending a second identification signal to the identification device at the second time point;

[0021] Wherein, the first identification signal is used to instruct the identification device to print the abnormal starting identification in the non-coated film area, and the second identification signal is used to instruct the identification device to print the abnormal ending identification in the non-coated film area.

[0022] Since the first time point is the time point when the abnormal starting position of the coating quality abnormal area passes through the identification device, therefore, a first identification signal is sent to the identification device at the first time point. Then, the abnormal starting identification printed by the identification device in response to the first identification signal exactly corresponds to the abnormal starting position. Similarly, since the second time point is the time point when the abnormal ending position of the coating quality abnormal area passes through the identification device, therefore, a second identification signal is sent to the identification device at the second time point. Then, the abnormal ending identification printed by the identification device in response to the second identification signal exactly corresponds to the abnormal ending position. In this way, it is ensured that the abnormal starting identification and the abnormal ending identification identified by the identification device can accurately reflect the position of the coating quality abnormal area.

[0023] In some embodiments, the sending the identification signal to the identification device based on the first time point and the second time point includes:

[0024] Sending a third identification signal carrying the first time point and a fourth identification signal carrying the second time point to the identification device;

[0025] Wherein, the third identification signal is used to instruct the identification device to print the abnormal starting identification in the non-coated film area at the first time point, and the fourth identification signal is used to instruct the identification device to print the abnormal ending identification in the non-coated film area at the second time point.

[0026] By carrying the first time point when the abnormal starting position passes through the identification device in the third identification signal, then when sending the third identification signal to the identification device, the identification device can know the first time point when the abnormal starting position passes through the identification device, so that it can print the abnormal starting identification in the non-coated film area at the first time point, making the printed abnormal starting identification exactly correspond to the abnormal starting position. Similarly, by carrying the second time point when the abnormal ending position passes through the identification device in the fourth identification signal, then when sending the fourth identification signal to the identification device, the identification device can know the second time point when the abnormal ending position passes through the identification device, so that it can print the abnormal ending identification in the non-coated film area at the second time point, making the printed abnormal ending identification exactly correspond to the abnormal ending position. In this way, it is ensured that the abnormal starting identification and the abnormal ending identification identified by the identification device can accurately reflect the position of the coating quality abnormal area.

[0027] In some embodiments, the determining the quality abnormal information based on the quality detection result includes:

[0028] For any coating film area, in the case that a continuous target number of detection points among the multiple detection points in this round of detection do not meet the reference quality range, the continuous detection points that do not meet the reference quality range are determined as abnormal points;

[0029] Based on the positions of multiple detection points in the front-wheel detection, determine the abnormal starting position of the coating quality abnormal area. The front-wheel detection is a round of detection before this round of detection and there are no such abnormal points during the detection.

[0030] Based on the positions of multiple detection points in the rear-wheel detection, determine the abnormal ending position of the coating quality abnormal area. The rear-wheel detection is a round of detection after this round of detection and there are no such abnormal points during the detection.

[0031] Since there are an abnormal number of consecutive target points in this round of detection, it indicates that there is an abnormality in the coating quality at the position of this round of detection. Then, it is possible that there are coating quality abnormalities in the area between a round of detection before this round of detection and this round of detection where there are no abnormal points during the detection. Similarly, it is also possible that there are coating quality abnormalities in the area between a round of detection after this round of detection and this round of detection where there are no abnormal points during the detection. In this case, based on the positions of multiple detection points in the front-wheel detection, determine the abnormal starting position of the coating quality abnormal area, and based on the positions of multiple detection points in the rear-wheel detection, determine the abnormal ending position of the coating quality abnormal area, which can avoid missing the detection of the coating quality abnormal area and improve the accuracy of determining the coating quality abnormal area.

[0032] In some embodiments, the determining the abnormal starting position of the coating quality abnormal area based on the positions of multiple detection points in the front-wheel detection includes:

[0033] Determine the position of the last detection point among the multiple detection points in the front-wheel detection as the abnormal starting position of the coating quality abnormal area;

[0034] The determining the abnormal ending position of the coating quality abnormal area based on the positions of multiple detection points in the rear-wheel detection includes:

[0035] Determine the position of the first detection point among the multiple detection points in the rear-wheel detection as the abnormal ending position of the coating quality abnormal area.

[0036] Since there are no abnormal points during the front-wheel detection, it indicates that there are no coating quality abnormalities at the positions of the front-wheel detection. Similarly, since there are no abnormal points during the rear-wheel detection, it indicates that there are no coating quality abnormalities at the positions of the rear-wheel detection. In this case, determine the position of the last detection point among the multiple detection points in the front-wheel detection as the abnormal starting position of the coating quality abnormal area, and determine the position of the first detection point among the multiple detection points in the rear-wheel detection as the abnormal ending position of the coating quality abnormal area, which can more accurately locate the coating quality abnormal area and improve the accuracy of determining the coating quality abnormal area.

[0037] In some embodiments, the non-coated film area includes the edge tab area of the film sheet. Then, regardless of which coated film area the coating quality abnormal area is in, an identification is printed in the edge tab area of the film sheet. Thus, the identification range of one identification device can cover this edge tab area. Therefore, the identification of the coating quality abnormal areas in multiple coated film areas can be achieved by one identification device, thereby reducing the number of identification devices for identifying the coating quality abnormal areas and lowering the production cost.

[0038] In some embodiments, the abnormal start identification and the abnormal end identification include a two-dimensional code identification and / or a text identification. The content of the two-dimensional code identification and the text identification indicates the coated film area where the coating quality abnormal area is located. Designing the abnormal start identification and the abnormal end identification as two-dimensional code identifications facilitates the subsequent device to identify and locate the abnormal start identification and the abnormal end identification. Designing the abnormal start identification and the abnormal end identification as text identifications facilitates the identification and location by coating technicians. If the abnormal start identification and the abnormal end identification include not only two-dimensional code identifications but also text identifications, it is beneficial for both the subsequent device to identify and locate the abnormal start identification and the abnormal end identification and for coating technicians to identify and locate, which is more user-friendly for both machines and humans and can improve the efficiency of identifying and locating the coating quality abnormal areas.

[0039] In a second aspect, the present application provides another method for identifying the abnormal position of a film sheet, which is executed by an identification device. The method includes the following steps:

[0040] Receiving an identification signal from a detection device, where the identification signal is sent by the detection device based on the quality abnormal information of the film sheet to be detected. The film sheet includes at least one coated film area, and the quality abnormal information includes the coated film area where the coating quality abnormal area is located, as well as the abnormal start position and the abnormal end position of the coating quality abnormal area;

[0041] In response to the identification signal, printing an abnormal start identification and an abnormal end identification at the corresponding abnormal start position and abnormal end position in the non-coated film area of the film sheet, where the content of the abnormal start identification and the abnormal end identification indicates the coated film area where the coating quality abnormal area is located.

[0042] In the embodiments of the present application, since the quality anomaly information includes the coating film area where the coating quality anomaly area is located, as well as the starting position and the ending position of the coating quality anomaly area, the marking device receives the marking signal sent by the detection device based on the quality anomaly information, and in response to the marking signal, prints an anomaly starting mark and an anomaly ending mark at the corresponding starting position and ending position of the coating quality anomaly area in the non-coating film area of the film sheet. Moreover, the content of the anomaly starting mark and the anomaly ending mark also indicates the coating film area where the coating quality anomaly area is located. Therefore, subsequently, the film sheet interval where the coating quality anomaly area is located can be determined from the film sheet based on the anomaly starting mark and the anomaly ending mark. Then, based on the coating film area indicated by the content of the anomaly starting mark and the anomaly ending mark, the coating quality anomaly area can be located, that is, the overlapping area of this coating film area and this film sheet interval. Therefore, this film sheet anomaly position marking scheme can accurately mark the specific position of the coating quality anomaly area in the film sheet, and regardless of which coating film area the coating quality anomaly area exists in, marks are printed in the non-coating film area of the film sheet. Then, the marking of the coating quality anomaly areas in multiple coating film areas can be achieved by one marking device, without setting a marking device for each coating film area, thereby reducing the number of marking devices for marking the coating quality anomaly areas and lowering the production cost.

[0043] In some embodiments, the step of printing the anomaly starting mark and the anomaly ending mark at the corresponding starting position and ending position of the coating quality anomaly area in the non-coating film area of the film sheet in response to the marking signal includes:

[0044] In response to the first marking signal, print the anomaly starting mark in the non-coating film area of the film sheet, where the first marking signal is sent by the detection device at the first time point, and the first time point is the time point when the starting position of the anomaly passes through the marking device;

[0045] In response to the second marking signal, print the anomaly ending mark in the non-coating film area of the film sheet, where the second marking signal is sent by the detection device at the second time point, and the second time point is the time point when the ending position of the anomaly passes through the marking device.

[0046] Since the first identification signal is sent by the detection device at the first time point, and the first time point is the time point when the abnormal starting position of the coating quality abnormal area passes through the identification device, the identification device prints an abnormal starting identification in response to the first identification signal, and the abnormal starting identification just corresponds to the abnormal starting position. Similarly, since the second identification signal is sent by the detection device at the second time point, and the second time point is the time point when the abnormal ending position of the coating quality abnormal area passes through the identification device, the identification device prints an abnormal ending identification in response to the second identification signal, and the abnormal ending identification just corresponds to the abnormal ending position. This ensures that the abnormal starting identification and the abnormal ending identification marked by the identification device can accurately reflect the position of the coating quality abnormal area.

[0047] In some embodiments, the printing of the abnormal starting identification and the abnormal ending identification corresponding to the abnormal starting position and the abnormal ending position respectively in the non-coated film area of the diaphragm in response to the identification signal includes:

[0048] In response to a third identification signal carrying the first time point, wait until the first time point to print the abnormal starting identification in the non-coated film area of the diaphragm. The first time point is the time point when the abnormal starting position passes through the identification device, and the third identification signal is sent by the detection device before the first time point;

[0049] In response to a fourth identification signal carrying the second time point, wait until the second time point to print the abnormal ending identification in the non-coated film area of the diaphragm. The second time point is the time point when the abnormal ending position passes through the identification device, and the fourth identification signal is sent by the detection device before the second time point.

[0050] Since the third identification signal is sent by the detection device before the first time point, and the first time point is the time point when the abnormal starting position passes through the identification device, the identification device prints an abnormal starting identification in the non-coated film area of the diaphragm in response to the third identification signal carrying the first time point, and the printed abnormal starting identification just corresponds to the abnormal starting position. Similarly, since the fourth identification signal is sent by the detection device before the second time point, and the second time point is the time point when the abnormal ending position passes through the identification device, the identification device prints an abnormal ending identification in the non-coated film area of the diaphragm in response to the fourth identification signal carrying the second time point, and the printed abnormal ending identification just corresponds to the abnormal ending position. This ensures that the abnormal starting identification and the abnormal ending identification marked by the identification device can accurately reflect the position of the coating quality abnormal area.

[0051] In some embodiments, the printing of the abnormal start identifier and the abnormal end identifier respectively corresponding to the abnormal start position and the abnormal end position in the non-coated film area of the diaphragm in response to the identification signal includes:

[0052] In response to the identification signal, the abnormal start identifier and the abnormal end identifier are respectively printed at the edge tab area of the diaphragm corresponding to the abnormal start position and the abnormal end position.

[0053] In the embodiments of the present application, regardless of which coated film area the coating quality abnormal area exists in, an identifier is printed at the edge tab area of the diaphragm. Then, the identification range of one identifier device can cover this edge tab area. Therefore, the identification of the coating quality abnormal areas in multiple coated film areas can be achieved through one identifier device, thereby reducing the number of identifier devices for identifying the coating quality abnormal areas and lowering the production cost.

[0054] In some embodiments, the abnormal start identifier and the abnormal end identifier include a two-dimensional code identifier and / or a text identifier, and the content of the two-dimensional code identifier and the text identifier indicates the coated film area where the coating quality abnormal area is located.

[0055] The abnormal start identifier and the abnormal end identifier are designed as two-dimensional code identifiers, which is convenient for subsequent devices to identify and locate the abnormal start identifier and the abnormal end identifier. And the abnormal start identifier and the abnormal end identifier are designed as text identifiers, which is convenient for coating technicians to identify and locate. If the abnormal start identifier and the abnormal end identifier include not only two-dimensional code identifiers but also text identifiers, it is beneficial to both the subsequent devices to identify and locate the abnormal start identifier and the abnormal end identifier and the coating technicians to identify and locate, which is more friendly to both machines and people and can improve the efficiency of identifying and locating the coating quality abnormal area.

[0056] In some embodiments, the identifier device includes an identifier printing module and an identifier detection module. After the abnormal start identifier and the abnormal end identifier are respectively printed at the non-coated film area of the diaphragm corresponding to the abnormal start position and the abnormal end position in response to the identification signal, the method further includes:

[0057] Performing identifier detection on the non-coated film area of the diaphragm through the identifier detection module;

[0058] In the case where no identifier is detected, outputting a prompt message for prompting that the identifier is not successfully printed.

[0059] After printing an identification on the identification printing module in the identification device, the non-coated film area of the diaphragm is detected for identification by the identification detection module in the identification device. In the case where no identification is detected, a prompt message is output to indicate that the identification has not been successfully printed. Then, at the position where the identification has not been successfully printed, the technician can be prompted to locate the abnormal coating quality area based on other methods, avoiding missed detection of the abnormal coating quality area and improving the accuracy of determining the abnormal coating quality area.

[0060] In a third aspect, to achieve the above object, the present application provides a diaphragm abnormal position identification system, the system includes a diaphragm transmission device, a detection device and an identification device;

[0061] The diaphragm transmission device is used to carry the diaphragm to be detected and drive the diaphragm to move along the length direction of the diaphragm; the diaphragm includes at least one coated film area;

[0062] The detection device is located above the diaphragm transmission device and scans and detects the diaphragm along the width direction of the diaphragm; the detection device is used to detect the coating quality of the coated film area in the diaphragm, determine the abnormal start position and the abnormal end position of the abnormal coating quality area, and send an identification signal to the identification device;

[0063] The identification device is located on one side of the diaphragm transmission device and has a preset distance from the detection device in the length direction of the diaphragm; the identification device is used to respond to the identification signal and print an abnormal start identification and an abnormal end identification on the non-coated film area of the diaphragm corresponding to the abnormal start position and the abnormal end position respectively, and the contents of the abnormal start identification and the abnormal end identification also indicate the coated film area where the abnormal coating quality area is located.

[0064] In an embodiment of the present application, a detection device performs a coating quality detection on a coated film area of a diaphragm to be detected, determines an abnormal start position and an abnormal end position of an area with abnormal coating quality, and sends a marking signal to a marking device. In response to the marking signal, the marking device prints an abnormal start mark and an abnormal end mark at positions corresponding to the abnormal start position and the abnormal end position respectively in the non-coated film area of the diaphragm. Moreover, the contents of the abnormal start mark and the abnormal end mark also indicate the coated film area where the area with abnormal coating quality is located. Therefore, subsequently, based on the abnormal start mark and the abnormal end mark, the diaphragm section where the area with abnormal coating quality is located can be determined from the diaphragm, and then based on the coated film area indicated by the contents of the abnormal start mark and the abnormal end mark, the area with abnormal coating quality can be located, that is, the overlapping area of this coated film area and this diaphragm section. Therefore, this diaphragm abnormal position marking scheme can accurately mark the specific position of the area with abnormal coating quality in the diaphragm, and regardless of which coated film area the area with abnormal coating quality exists in, marks are printed in the non-coated film area of the diaphragm. Then, the marking of the areas with abnormal coating quality in multiple coated film areas can be achieved by one marking device, without setting a marking device for each coated film area, thereby reducing the number of marking devices for marking the areas with abnormal coating quality and lowering the production cost.

[0065] In some embodiments, the system further includes a cutting device;

[0066] The cutting device is configured to detect the marks in the non-coated film area of the diaphragm;

[0067] In response to detecting the abnormal start mark, control the winding device to stop to display the abnormal start position of the area with abnormal coating quality in the diaphragm;

[0068] In response to detecting the abnormal end mark, control the winding device to stop to display the abnormal end position of the area with abnormal coating quality in the diaphragm;

[0069] Based on the abnormal start position, the abnormal end position, and the coated film area indicated by the contents of the abnormal start mark and the abnormal end mark, locate the area with abnormal coating quality from the coated film area in the diaphragm.

[0070] In an embodiment of the present application, a cutting device detects an identifier in the non-coated film area of a diaphragm. In response to detecting an abnormal start identifier, the winding device is controlled to stop, so that the abnormal start position of the abnormal coating quality area in the diaphragm can be displayed. Further, in response to detecting an abnormal end identifier, the winding device is controlled to stop again, so that the abnormal end position of the abnormal coating quality area in the diaphragm can be displayed. The diaphragm section where the abnormal coating quality area is located is between the abnormal start position and the abnormal end position. Combining with the coating film area indicated by the content of the abnormal start identifier and the abnormal end identifier, the abnormal coating quality area can be quickly located from the coating film area in the diaphragm, and thus, based on the coating condition of the abnormal coating quality area, it can be determined whether to cut the abnormal coating quality area.

[0071] Fourthly, to achieve the above object, the present application further provides a detection device, which includes: a memory, a processor, and a diaphragm abnormal position identification program stored on the memory and executable on the processor. The diaphragm abnormal position identification program is configured to implement the steps of the diaphragm abnormal position identification method as described above.

[0072] Fifthly, to achieve the above object, the present application further provides an identification device, which includes: a memory, a processor, and a diaphragm abnormal position identification program stored on the memory and executable on the processor. The diaphragm abnormal position identification program is configured to implement the steps of the diaphragm abnormal position identification method as described above.

[0073] Sixthly, to achieve the above object, the present application further provides a storage medium, on which a diaphragm abnormal position identification program is stored. When the diaphragm abnormal position identification program is executed by a processor, it implements the steps of the diaphragm abnormal position identification method as described above.

[0074] The above description is only an overview of the technical solution of the present application. In order to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other objects, features, and advantages of the present application more obvious and understandable, the specific embodiments of the present application are hereinafter specifically exemplified. Description of the Drawings

[0075] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. And in all the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0076] Figure 1 is a schematic flowchart of a diaphragm abnormal position identification method executed by a detection device provided by some embodiments of the present application;

[0077] Figure 2 A schematic diagram of a diaphragm provided for some embodiments of the present application;

[0078] Figure 3 A schematic diagram of an abnormal coating quality area provided for some embodiments of the present application;

[0079] Figure 4 A schematic diagram of a marking printing position provided for some embodiments of the present application;

[0080] Figure 5 A schematic flowchart of a method for identifying abnormal positions of a diaphragm executed by a marking device provided for some embodiments of the present application;

[0081] Figure 6 A schematic diagram of the module structure of a diaphragm abnormal position marking system provided for some embodiments of the present application.

[0082] The reference numerals in the specific embodiments are as follows:

[0083] 20: Diaphragm;

[0084] 201: Coated film area;

[0085] 202: Non-coated film area;

[0086] 30: Scanning path of the detection device;

[0087] 301: Detection point;

[0088] 302: Abnormal point;

[0089] 40: Abnormal coating quality area;

[0090] 401: Abnormal start mark;

[0091] 402: Abnormal end mark.

[0092] The realization of the purpose, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0093] Hereinafter, embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to illustrate the technical solution of the present application more clearly, and therefore are only examples and cannot be used to limit the protection scope of the present application.

[0094] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0095] In the description of the embodiments of this application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity, specific order, or primary-secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "a plurality" is more than two, unless otherwise specifically defined.

[0096] Referring to "embodiments" herein means that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0097] In the description of the embodiments of this application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0098] In the description of the embodiments of this application, the term "a plurality" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0099] In the description of the embodiments of this application, the orientation or positional relationship indicated by technical terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of this application and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of this application.

[0100] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "coupling", "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral body; it can also be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific situations.

[0101] During the manufacturing process of lithium-ion batteries, the coating quality of the electrode diaphragm is crucial. The uniformity and accuracy of the coating directly affect the performance, consistency, and safety of the battery. Therefore, it is necessary to detect the coating quality of the coating film area in the diaphragm and use a laser to mark the areas with abnormal coating quality for later positioning and cutting of the areas with abnormal coating quality. Considering that there may be multiple coating film areas on the diaphragm, and each coating film area may have abnormal coating quality, while the marking range of the laser is limited and cannot cover multiple coating film areas on the diaphragm. Therefore, a corresponding laser is set for each coating film area, and the laser is used to mark the areas with abnormal coating quality in the corresponding coating film area. This will result in a high cost for purchasing lasers, an increase in the combined debugging time of multiple lasers, and in addition, when the varieties of multiple coating film areas on the diaphragm are inconsistent, multiple lasers may not be compatible for use.

[0102] In the solution of the present application, the coating quality of the coating film area in the diaphragm to be detected is detected, and the quality abnormal information is determined based on the quality detection result. Since the quality abnormal information includes the coating film area where the coating quality abnormal area is located, as well as the abnormal start position and abnormal end position of the coating quality abnormal area, an identification signal is sent to the identification device based on the quality abnormal information, instructing the identification device to print an abnormal start identification and an abnormal end identification at the corresponding abnormal start position and abnormal end position in the non-coating film area of the diaphragm respectively. Moreover, the content of the abnormal start identification and the abnormal end identification also indicates the coating film area where the coating quality abnormal area is located. Then, the film section where the coating quality abnormal area is located can be determined from the diaphragm based on the abnormal start identification and the abnormal end identification. Next, based on the coating film area indicated by the content of the abnormal start identification and the abnormal end identification, the coating quality abnormal area can be accurately located, that is, the overlapping area of the coating film area and the film section.

[0103] This diaphragm abnormal position identification scheme can, on the one hand, accurately identify the specific position of the coating quality abnormal area in the diaphragm. On the other hand, regardless of which coating film area the coating quality abnormal area is located in, the identification is printed in the same area of the diaphragm, that is, the non - coating film area. Then, the identification range of one identification device can cover this non - coating film area. Therefore, the identification of the coating quality abnormal areas in multiple coating film areas can be achieved through one identification device, without setting up an identification device for each coating film area. This not only reduces the cost of purchasing the identification device, but also reduces the debugging difficulty of the identification device, and can reduce the debugging time of the identification device. Therefore, the production cost is reduced in multiple aspects.

[0104] The diaphragm abnormal position identification scheme disclosed in the embodiments of the present application can be applied to a variety of scenarios. For example, the scenario of detecting the coating weight of the positive electrode diaphragm or the negative electrode diaphragm. Or, the scenario of detecting the roller - pressing thickness of the positive electrode diaphragm or the negative electrode diaphragm, etc. Of course, it can also be applied to other coating quality detection scenarios, and the embodiments of the present application do not limit this.

[0105] Please refer to Figure 1 , Figure 1 which is a schematic flowchart of a method for identifying the abnormal position of a diaphragm executed by a detection device provided in some embodiments of the present application, including the following steps:

[0106] S110, perform coating quality detection on the coating film areas in the diaphragm to be detected, and the diaphragm includes at least one coating film area;

[0107] S120, determine the quality abnormal information based on the quality detection result, and the quality abnormal information includes the coating film area where the coating quality abnormal area is located, as well as the abnormal start position and the abnormal end position of the coating quality abnormal area;

[0108] S130, send an identification signal to the identification device based on the quality abnormal information, and the identification signal is used to instruct the identification device to print an abnormal start identification and an abnormal end identification at the corresponding abnormal start position and abnormal end position in the non - coating film area of the diaphragm respectively, and the content of the abnormal start identification and the abnormal end identification indicates the coating film area where the coating quality abnormal area is located.

[0109] Among them, the diaphragm is a sheet-like material that includes at least one coated film area. For example, the diaphragm includes electrode diaphragms used in the battery manufacturing process, such as the positive electrode diaphragm, the negative electrode diaphragm, etc. Coating is a process of evenly applying a liquid or slurry on the surface of a substrate. The coated film area refers to the area on the diaphragm that has been processed by the coating process. Taking the electrode diaphragm as an example, the coated film area refers to the area where an active material is evenly applied on the electrode substrate, and these active materials determine the performance and characteristics of the battery. The non-coated film area refers to the area on the diaphragm where the active material has not been coated. In this application, printing the abnormal start mark and the abnormal end mark in the non-coated film area will not affect the electrochemical performance of the electrode diaphragm. In addition, there may be multiple non-coated film areas in the diaphragm. Printing the mark in the non-coated film area in this application means printing the mark in the same non-coated film area. Figure 2 This is a schematic diagram of a diaphragm provided for some embodiments of this application. Refer to Figure 2 , the diaphragm 20 includes three coated film areas 201 and four non-coated film areas 202, and any one of the non-coated film areas can be selected for printing the mark.

[0110] Coating quality detection refers to evaluating the performance and characteristics of the coated film area to ensure that it meets the predetermined standards and requirements. Taking the coating quality detection of the electrode diaphragm as an example, it includes thickness measurement, surface roughness detection, density detection, electrochemical performance detection, etc. Through these detection contents, the performance and quality of the coated film area can be comprehensively evaluated to ensure the high performance and reliability of the battery. In practical applications, the contents of coating quality detection can be selected according to needs.

[0111] The quality abnormal information refers to the problems that do not meet the standards or expectations found during the coating quality detection process, including the coated film area where the coating quality abnormal area is located, as well as the abnormal start position and the abnormal end position of the coating quality abnormal area. Of course, the quality abnormal information can also include the nature of the quality abnormality, such as abnormal coating density, abnormal coating thickness, etc. Among them, the coating quality abnormal area refers to the part with quality problems in the coated film area. For example, areas with uneven coating density, inconsistent coating thickness, etc. The abnormal start position refers to the starting point of the coating quality abnormal area. The abnormal end position refers to the end point of the coating quality abnormal area. The abnormal start position and the abnormal end position are used to accurately locate the range of the quality abnormal area, which is convenient for evaluating the severity of the quality problem and formulating solutions.

[0112] An identification device is a device used to print or mark specific identifications on a diaphragm. The identification device can be an inkjet printer, a laser, a labeling machine, etc. An identification signal is a marking instruction sent by a detection device to the identification device, used to instruct the identification device to perform a marking action. An abnormal start identification is a mark printed at the corresponding abnormal start position in the non-coated film area of the diaphragm, used to clearly indicate the starting point of the coating quality abnormal area in the diaphragm. An abnormal end identification is a mark printed at the corresponding abnormal end position in the non-coated film area of the diaphragm, used to clearly indicate the end point of the coating quality abnormal area in the diaphragm.

[0113] It should be noted that only based on the positions of the abnormal start identification and the abnormal end identification, the diaphragm section where the coating quality abnormal area is located can be determined. However, since the diaphragm contains multiple coated film areas, it is impossible to determine which coated film area in this diaphragm section the coating quality abnormal area is in. Therefore, the content of the abnormal start identification and the abnormal end identification in this application indicates the coated film area where the coating quality abnormal area is located. For example, each coated film area in the diaphragm has its own film area identification, and the abnormal start identification and the abnormal end identification include the identification of the coated film area where the coating quality abnormal area is located. In this way, based on the diaphragm section where the coating quality abnormal area is located and the identification of this coated film area, the coating quality abnormal area can be accurately located, that is, the overlapping area of this diaphragm section and this coated film area.

[0114] Taking the surface density detection of an electrode diaphragm as an example to illustrate the coating quality detection process, it includes placing the electrode diaphragm on a diaphragm transmission device, and the diaphragm transmission device drives the diaphragm to move along the length direction of the diaphragm. The surface density meter scans and detects the diaphragm along the width direction of the diaphragm, that is, scans from one side of the electrode diaphragm along the width direction to the other side, and then scans in the reverse direction, thus forming a scanning path similar to the shape of the letter "W". During the scanning process of the surface density meter, each scanning point is a detection point, and the surface density meter will record the surface density value of each detection point. Optionally, the surface density meter will also generate a surface density distribution map, showing the surface density values at different positions on the diaphragm, to visually display the surface density distribution and facilitate the evaluation of the coating uniformity.

[0115] Based on the quality detection results, the surface density meter determines the coated film area where the coating quality abnormal area is located, the abnormal start position and the abnormal end position of the coating quality abnormal area, and then can send an identification signal to the identification device, instructing the identification device to print the abnormal start identification and the abnormal end identification at the corresponding abnormal start position and abnormal end position in the non-coated film area of the diaphragm respectively.

[0116] Since there is a certain distance between the detection device and the marking device, when the detection device detects the abnormal start position and the abnormal end position of the coating quality abnormal area, there is a certain distance between the abnormal start position and the abnormal end position and the marking device. Therefore, the detection device needs to determine the accurate time points when the abnormal start position and the abnormal end position pass through the marking device, so that the marking device can print the abnormal start mark and the abnormal end mark at the moments when the abnormal start position and the abnormal end position pass through the marking device.

[0117] Correspondingly, in some embodiments, sending a marking signal to the marking device based on the quality abnormal information includes: determining a first time point when the abnormal start position passes through the marking device and a second time point when the abnormal end position passes through the marking device; sending a marking signal to the marking device based on the first time point and the second time point. The marking signal is used to instruct the marking device to print an abnormal start mark in the non-coated film area at the first time point and print an abnormal end mark in the non-coated film area at the second time point. Since the first time point is the time point when the abnormal start position passes through the marking device and the second time point is the time point when the abnormal end position passes through the marking device, then the marking device prints an abnormal start mark in the non-coated film area at the first time point and prints an abnormal end mark in the non-coated film area at the second time point, so that the abnormal start mark and the abnormal end mark exactly correspond to the abnormal start position and the abnormal end position of the coating quality abnormal area, facilitating subsequent accurate positioning of the coating quality abnormal area based on the abnormal start position and the abnormal end position.

[0118] In some embodiments, the detection device determines the first time point when the abnormal start position passes through the marking device and the second time point when the abnormal end position passes through the marking device, including: determining the transmission duration required for any position in the film to be transmitted from the detection device to the marking device according to the distance between the detection device and the marking device and the transmission speed of the film; determining the first time point based on the third time point when the abnormal start position passes through the detection device and the transmission duration, and determining the second time point based on the fourth time point when the abnormal end position passes through the detection device and the transmission duration.

[0119] Since the third time point is the time point when the abnormal start position passes through the detection device and the transmission duration is the duration required for any position in the film to be transmitted from the detection device to the marking device, that is, the duration for the abnormal start position to be transmitted from the detection device to the marking device, therefore, the first time point when the abnormal start position passes through the marking device can be accurately determined based on the third time point and the transmission duration. Similarly, since the fourth time point is the time point when the abnormal end position passes through the detection device and the transmission duration is also the duration for the abnormal end position to be transmitted from the detection device to the marking device, therefore, the second time point when the abnormal end position passes through the marking device can be accurately determined based on the fourth time point and the transmission duration.

[0120] Among them, the transmission duration required for any position on the diaphragm to be transmitted from the detection device to the identification device is the ratio of the distance between the detection device and the identification device to the transmission speed of the diaphragm. Adding the third time point when the abnormal starting position passes through the detection device to this transmission duration gives the first time point when the abnormal starting position passes through the identification device. Adding the fourth time point when the abnormal ending position passes through the detection device to this transmission duration gives the second time point when the abnormal ending position passes through the identification device.

[0121] Optionally, there are at least the following two implementation manners for the detection device to send an identification signal to the identification device based on the first time point and the second time point. The first manner of sending the identification signal requires the identification device to print an identification immediately when receiving the identification signal, so as to ensure the accuracy of the positions of the printed abnormal starting identification and abnormal ending identification. The second manner is to send the identification signal to the identification device in advance, requiring the identification device to print with a time delay, so as to ensure the accuracy of the positions of the printed abnormal starting identification and abnormal ending identification.

[0122] The first one: The detection device sends a first identification signal to the identification device at the first time point and a second identification signal to the identification device at the second time point; among them, the first identification signal is used to instruct the identification device to print an abnormal starting identification in the non-coated film area, and the second identification signal is used to instruct the identification device to print an abnormal ending identification in the non-coated film area. Since the first time point is the time point when the abnormal starting position of the coating quality abnormal area passes through the identification device, therefore, when the detection device sends the first identification signal to the identification device at the first time point, the abnormal starting identification printed by the identification device in response to this first identification signal just corresponds to the abnormal starting position. Similarly, since the second time point is the time point when the abnormal ending position of the coating quality abnormal area passes through the identification device, therefore, when sending the second identification signal to the identification device at the second time point, the abnormal ending identification printed by the identification device in response to this second identification signal just corresponds to the abnormal ending position. In this way, it is ensured that the abnormal starting identification and abnormal ending identification identified by the identification device can accurately reflect the position of the coating quality abnormal area.

[0123] The second method: The detection device sends a third identification signal carrying the first time point and a fourth identification signal carrying the second time point to the identification device; wherein, the third identification signal is used to instruct the identification device to print an abnormal start identification in the non-coated film area at the first time point, and the fourth identification signal is used to instruct the identification device to print an abnormal end identification in the non-coated film area at the second time point. By carrying the first time point when the abnormal start position passes through the identification device in the third identification signal, when the third identification signal is sent to the identification device, the identification device can know the first time point when the abnormal start position passes through the identification device, so as to be able to print the abnormal start identification in the non-coated film area at the first time point, making the printed abnormal start identification exactly correspond to the abnormal start position. Similarly, by carrying the second time point when the abnormal end position passes through the identification device in the fourth identification signal, when the fourth identification signal is sent to the identification device, the identification device can know the second time point when the abnormal end position passes through the identification device, so as to be able to print the abnormal end identification in the non-coated film area at the second time point, making the printed abnormal end identification exactly correspond to the abnormal end position. In this way, it is ensured that the abnormal start identification and abnormal end identification marked by the identification device can accurately reflect the position of the coating quality abnormal area.

[0124] For example, in response to receiving the third identification signal, the identification device records the first time point when the abnormal start position passes through in the third identification signal, and in response to the arrival of the first time point, prints the abnormal start identification. Similarly, in response to receiving the fourth identification signal, the identification device records the second time point when the abnormal end position passes through in the fourth identification signal, and in response to the arrival of the second time point, prints the abnormal end identification.

[0125] The quality inspection results of the film include the inspection results of multiple inspection points, among which there are both inspection points that meet the reference quality range and inspection points that do not meet the reference quality range. The detection device needs to determine the coating quality abnormal area according to the inspection results of these inspection points. If the determined coating quality abnormal area is too large or too small, it will directly lead to overkill or missed killing of the film. Only by accurately positioning the coating quality abnormal area can we avoid both material waste and omission of quality problems, and improve the quality of the produced coated film.

[0126] To this end, in some embodiments, the implementation manner in which the detection device determines quality anomaly information based on the quality detection result is as follows: for any coating film area, when a continuous target number of detection points among the multiple detection points in the current round of detection do not meet the reference quality range, the continuous detection points that do not meet the reference quality range are determined as anomaly points. Then, based on the positions of the multiple detection points in the previous round of detection, the anomaly start position of the coating quality anomaly area is determined, where the previous round of detection is a round of detection before the current round of detection and there are no anomaly points during the detection. Next, based on the positions of the multiple detection points in the subsequent round of detection, the anomaly end position of the coating quality anomaly area is determined, where the subsequent round of detection is a round of detection after the current round of detection and there are no anomaly points during the detection.

[0127] Among them, the reference quality range refers to a set of numerical ranges used to determine whether a product or material meets the standards during a specific quality detection or evaluation process. For example, in the coating quality detection of electrode membranes, the reference quality range can cover ranges of indicators such as areal density, thickness, and surface roughness.

[0128] The specific value of the target number can be set to any value as needed. For example, the target number is four. In this way, when four consecutive detection points among the multiple detection points in the current round of detection do not meet the reference quality range, these four consecutive detection points that do not meet the reference quality range are determined as anomaly points.

[0129] Exemplarily, for any coating film area, the detection device sequentially performs multiple rounds of scanning detections in this coating film area. Once there are anomaly points in any round of detection, the detection device will determine the anomaly start position of the coating quality anomaly area based on the positions of the multiple detection points in the previous round of detection. Among them, the round of detection with anomaly points is the current round of detection described above, and the previous round of detection of the current round of detection is the previous round of detection described above. Next, the detection device determines whether there are anomaly points in the next round of detection of the current round of detection. If there are anomaly points in the next round of detection, it continues to determine whether there are anomaly points in the next round of detection until a round of detection without anomaly points is determined. This round of detection is the subsequent round of detection described above, and the detection device will determine the anomaly end position of the coating quality anomaly area based on the positions of the multiple detection points in this subsequent round of detection.

[0130] Since there are abnormal points in the number of consecutive targets in this round of detection, it indicates that there is an abnormality in the coating quality at the position of this round of detection. Then, there may be an abnormality in the coating quality in the area between a round of detection before this round of detection and this round of detection where there are no abnormal points during the detection. Similarly, there may also be an abnormality in the coating quality in the area between a round of detection after this round of detection and this round of detection where there are no abnormal points during the detection. In this case, based on the positions of multiple detection points in the previous round of detection, the starting position of the abnormality in the coating quality abnormal area is determined, and based on the positions of multiple detection points in the subsequent round of detection, the ending position of the abnormality in the coating quality abnormal area is determined, which can avoid missing the detection of the coating quality abnormal area and improve the accuracy of determining the coating quality abnormal area.

[0131] In some embodiments, the detection device determines the starting position of the abnormality in the coating quality abnormal area based on the positions of multiple detection points in the previous round of detection, including: determining the position of the last detection point among the multiple detection points in the previous round of detection as the starting position of the abnormality in the coating quality abnormal area; determining the ending position of the abnormality in the coating quality abnormal area based on the positions of multiple detection points in the subsequent round of detection, including: determining the position of the first detection point among the multiple detection points in the subsequent round of detection as the ending position of the abnormality in the coating quality abnormal area.

[0132] Since there are no abnormal points during the previous round of detection, it indicates that there is no abnormality in the coating quality at the positions of the previous round of detection. Similarly, since there are no abnormal points during the subsequent round of detection, it indicates that there is no abnormality in the coating quality at the positions of the subsequent round of detection. In this case, determining the position of the last detection point among the multiple detection points in the previous round of detection as the starting position of the abnormality in the coating quality abnormal area and determining the position of the first detection point among the multiple detection points in the subsequent round of detection as the ending position of the abnormality in the coating quality abnormal area can more accurately locate the coating quality abnormal area and improve the accuracy of determining the coating quality abnormal area.

[0133] Reference Figure 3 , Figure 3 is a schematic diagram of an abnormal area of coating quality provided by some embodiments of the present application. Reference Figure 3 , the diaphragm 20 includes three coated film areas 201 and four non-coated film areas 202. There are multiple detection points 301 on the scanning path 30 of the detection device. Figure 3 There are a total of five rounds of detection in , among which there are abnormal points 302 in the second round of detection and the third round of detection. Then, the starting position of the abnormality determined based on the multiple detection points in the first round of detection is the left border position of the coating quality abnormal area 40, and the ending position of the abnormality determined based on the multiple detection points in the fourth round of detection is the right border position of the coating quality abnormal area 40.

[0134] In some embodiments, the non-coated film area includes the edge tab area of the film sheet. Correspondingly, the identification signal sent by the detection device to the identification device is used to instruct the identification device to print an abnormal start identification and an abnormal end identification at the corresponding abnormal start position and abnormal end position in the edge tab area of the film sheet. Additionally, since the film sheet includes two edge tab areas, one of the edge tab areas is selected for printing the identification as needed. It should be noted that once the edge tab area for printing the identification is selected, the abnormal start identification and abnormal end identification of all coating quality abnormal areas in the film sheet are printed in the selected edge tab area. Then, the identification range of one identification device can cover this edge tab area. Therefore, the identification of coating quality abnormal areas in multiple coated film areas can be achieved through one identification device, thereby reducing the number of identification devices for identifying coating quality abnormal areas and lowering the production cost.

[0135] Reference Figure 4 , Figure 4 FIG. is a schematic diagram of an identification printing position provided in some embodiments of the present application. The edge tab area refers to the non-coated film areas 202 at the uppermost and lowermost positions in the film sheet 20. In the present application, the lowermost edge tab area is selected for printing the identification, and the abnormal start identification 401 and the abnormal end identification 402 are located in this edge tab area.

[0136] In some embodiments, the abnormal start identification and the abnormal end identification include a two-dimensional code identification and / or a text identification. The content of the two-dimensional code identification and the text identification indicates the coated film area where the coating quality abnormal area is located. Designing the abnormal start identification and the abnormal end identification as two-dimensional code identifications facilitates the subsequent device to identify and locate the abnormal start identification and the abnormal end identification. Designing the abnormal start identification and the abnormal end identification as text identifications facilitates the identification and location by coating technicians. If the abnormal start identification and the abnormal end identification include not only two-dimensional code identifications but also text identifications, it is beneficial for both the subsequent device to identify and locate the abnormal start identification and the abnormal end identification and for coating technicians to identify and locate, which is more user-friendly for both machines and humans and can improve the efficiency of identifying and locating coating quality abnormal areas.

[0137] It should be noted that in some possible implementation manners, since both the upper and lower surfaces of the film sheet need to be coated, in addition to indicating the coated film area where the coating quality abnormal area is located, the content of the abnormal start identification and the abnormal end identification also needs to indicate the coated surface where the coating quality abnormal area is located. For example, the film sheet includes two surfaces A and B, and each surface includes three coated film areas, and the identifications of the three coated film areas are 1, 2, and 3 respectively. If the coating quality abnormal area exists in the second coated film area of surface A, then the content of the abnormal start identification and the abnormal end identification includes "A2". Of course, the abnormal start identification and the abnormal end identification may also include other content, and the embodiments of the present application do not limit this.

[0138] Please refer to Figure 5 , Figure 5 which is a schematic flowchart of a method for identifying the abnormal position of a diaphragm executed by an identification device provided for some embodiments of the present application. For the same content as the above embodiments, please refer to the above embodiments and will not be elaborated here. The method includes the following steps:

[0139] S510, receiving an identification signal from a detection device, where the identification signal is sent by the detection device based on the quality abnormal information of the diaphragm to be detected. The diaphragm includes at least one coated film area, and the quality abnormal information includes the coated film area where the coating quality abnormal area is located, as well as the abnormal start position and abnormal end position of the coating quality abnormal area;

[0140] S520, in response to the identification signal, printing an abnormal start identification and an abnormal end identification at the corresponding abnormal start position and abnormal end position in the non-coated film area of the diaphragm respectively. The content of the abnormal start identification and the abnormal end identification indicates the coated film area where the coating quality abnormal area is located.

[0141] In the embodiments of the present application, since the quality abnormal information includes the coated film area where the coating quality abnormal area is located, as well as the abnormal start position and abnormal end position of the coating quality abnormal area, the identification device receives the identification signal sent by the detection device based on the quality abnormal information, and in response to the identification signal, prints an abnormal start identification and an abnormal end identification at the corresponding abnormal start position and abnormal end position in the non-coated film area of the diaphragm respectively. Moreover, the content of the abnormal start identification and the abnormal end identification also indicates the coated film area where the coating quality abnormal area is located. Therefore, subsequently, the film area where the coating quality abnormal area is located can be determined from the diaphragm based on the abnormal start identification and the abnormal end identification. Then, based on the coated film area indicated by the content of the abnormal start identification and the abnormal end identification, the coating quality abnormal area can be located, that is, the overlapping area of the coated film area and the film area. Therefore, this diaphragm abnormal position identification scheme can accurately identify the specific position of the coating quality abnormal area in the diaphragm, and regardless of which coated film area the coating quality abnormal area exists in, the identification is printed in the non-coated film area of the diaphragm. Then, the identification of the coating quality abnormal areas in multiple coated film areas can be achieved by one identification device, without setting an identification device for each coated film area, thereby reducing the number of identification devices for identifying the coating quality abnormal areas and reducing the production cost.

[0142] In some embodiments, in response to an identification signal, an identification device prints an abnormal start identification and an abnormal end identification at the corresponding abnormal start position and abnormal end position in the non-coated film area of the diaphragm, respectively, including: the identification device prints the abnormal start identification in the non-coated film area of the diaphragm in response to a first identification signal, where the first identification signal is sent by a detection device at a first time point, and the first time point is the time point when the abnormal start position passes through the identification device; and in response to a second identification signal, prints the abnormal end identification in the non-coated film area of the diaphragm, where the second identification signal is sent by the detection device at a second time point, and the second time point is the time point when the abnormal end position passes through the identification device. Since the first identification signal is sent by the detection device at the first time point, and the first time point is the time point when the abnormal start position of the coating quality abnormal area passes through the identification device, therefore, the identification device prints the abnormal start identification in response to the first identification signal, and this abnormal start identification just corresponds to the abnormal start position. Similarly, since the second identification signal is sent by the detection device at the second time point, and the second time point is the time point when the abnormal end position of the coating quality abnormal area passes through the identification device, therefore, the identification device prints the abnormal end identification in response to the second identification signal, and this abnormal end identification just corresponds to the abnormal end position. In this way, it is ensured that the abnormal start identification and the abnormal end identification marked by the identification device can accurately reflect the position of the coating quality abnormal area.

[0143] In some embodiments, in response to an identification signal, the identification device prints an abnormal start identification and an abnormal end identification at the non-coated film area of the diaphragm corresponding to the abnormal start position and the abnormal end position respectively, including: in response to a third identification signal carrying a first time point, waiting until the first time point to print the abnormal start identification at the non-coated film area of the diaphragm, the first time point being the time point when the abnormal start position passes through the identification device, and the third identification signal being sent by the detection device before the first time point; in response to a fourth identification signal carrying a second time point, waiting until the second time point to print the abnormal end identification at the non-coated film area of the diaphragm, the second time point being the time point when the abnormal end position passes through the identification device, and the fourth identification signal being sent by the detection device before the second time point. Since the third identification signal is sent by the detection device before the first time point, and the first time point is the time point when the abnormal start position passes through the identification device, therefore, in response to the third identification signal carrying the first time point, waiting until the first time point to print the abnormal start identification at the non-coated film area of the diaphragm, the printed abnormal start identification exactly corresponds to the abnormal start position. Similarly, since the fourth identification signal is sent by the detection device before the second time point, and the second time point is the time point when the abnormal end position passes through the identification device, therefore, in response to the fourth identification signal carrying the second time point, waiting until the second time point to print the abnormal end identification at the non-coated film area of the diaphragm, the printed abnormal end identification exactly corresponds to the abnormal end position. This ensures that the abnormal start identification and the abnormal end identification marked by the identification device can accurately reflect the position of the coating quality abnormal area.

[0144] In some embodiments, in response to an identification signal, the identification device prints an abnormal start identification and an abnormal end identification at the non-coated film area of the diaphragm corresponding to the abnormal start position and the abnormal end position respectively, including: in response to the identification signal, printing the abnormal start identification and the abnormal end identification at the edge tab area of the diaphragm corresponding to the abnormal start position and the abnormal end position respectively. In the embodiments of the present application, regardless of which coating film area the coating quality abnormal area exists in, the identification is printed at the edge tab area of the diaphragm. Then, the identification range of one identification device can cover this edge tab area. Therefore, the identification of the coating quality abnormal areas in multiple coating film areas can be achieved through one identification device, thereby reducing the number of identification devices used to identify the coating quality abnormal areas and lowering the production cost.

[0145] In some embodiments, the abnormal start identifier and abnormal end identifier of the identification device include a two-dimensional code identifier and / or a text identifier, and the content of the two-dimensional code identifier and the text identifier indicates the coating film area where the coating quality abnormal area is located. The abnormal start identifier and abnormal end identifier are designed as two-dimensional code identifiers, which is convenient for subsequent devices to identify and locate the abnormal start identifier and abnormal end identifier. The abnormal start identifier and abnormal end identifier are designed as text identifiers, which is convenient for coating technicians to identify and locate. If the abnormal start identifier and abnormal end identifier include not only two-dimensional code identifiers but also text identifiers, it is beneficial for subsequent devices to identify and locate the abnormal start identifier and abnormal end identifier, and it is also beneficial for coating technicians to identify and locate. It is more friendly to both machines and people, and can improve the efficiency of identifying and locating the coating quality abnormal area.

[0146] In some embodiments, the identification device includes an identification printing module and an identification detection module. After the identification printing module responds to the identification signal and prints the abnormal start identifier and abnormal end identifier at the corresponding abnormal start position and abnormal end position in the non-coated film area of the film respectively, the identification detection module is also required to perform identification detection on the non-coated film area of the film; in the case where no identifier is detected, a prompt message is output, and the prompt message is used to prompt that the identifier is not successfully printed.

[0147] Exemplarily, the identification device includes a laser engraving module, that is, the identification printing module, for printing identifiers. It also includes a barcode scanner module, that is, the identification detection module, for detecting whether the identifier is successfully printed. According to needs, the identification printing module and the identification detection module can be set at any position of the identification device, and the embodiments of the present application do not limit this.

[0148] After printing the identifier through the identification printing module in the identification device, the identification detection module in the identification device performs identification detection on the non-coated film area of the film. In the case where no identifier is detected, by outputting a prompt message to prompt that the identifier is not successfully printed, then at the position where the identifier is not successfully printed, the technician can be prompted to locate the coating quality abnormal area based on other methods, avoiding missed detection of the coating quality abnormal area and improving the accuracy of determining the coating quality abnormal area.

[0149] Please refer to Figure 6 , Figure 6 , which is a schematic module structure diagram of a film abnormal position identification system provided by some embodiments of the present application. The film abnormal position identification system 600 includes a detection device 601, a film transmission device 602, and an identification device 603.

[0150] Among them, the film transmission device 602 is used to carry the film to be detected and drive the film to move along the length direction of the film. Among them, the film includes at least one coating film area.

[0151] The detection device 601 is located above the diaphragm transmission device 602 and scans and detects the diaphragm along the width direction of the diaphragm. The detection device 601 is used to detect the coating quality of the coated film area in the diaphragm, determine the abnormal start position and abnormal end position of the coating quality abnormal area, and send an identification signal to the identification device 603.

[0152] The identification device 603 is located on one side of the diaphragm transmission device 602 and has a preset distance from the detection device 601 in the length direction of the diaphragm. The identification device 603 is used to respond to the identification signal and print an abnormal start identification and an abnormal end identification at the corresponding abnormal start position and abnormal end position in the non-coated film area of the diaphragm, and the contents of the abnormal start identification and the abnormal end identification also indicate the coated film area where the coating quality abnormal area is located.

[0153] Exemplarily, the diaphragm transmission device 602 includes an unwinding device and a winding device. The unwinding device is used to smoothly unwind the rolled diaphragm from the reel for subsequent coating, drying and other processes. The winding device is used to wind the diaphragm after coating, drying and other processes into a reel for subsequent storage, transportation and use.

[0154] Among them, the unwinding device, the coating device, the detection device 601, the identification device 603 and the winding device are connected in sequence. That is, the output end of the unwinding device leads out the diaphragm through a guide roller and enters the coating device. The output end of the coating device leads out the diaphragm through a guide roller and enters the measurement area of the detection device 601. The output end of the detection device 601 leads out the diaphragm through a guide roller and enters the identification device 603. The output end of the identification device 603 leads out the diaphragm through a guide roller and enters the winding device.

[0155] In an embodiment of the present application, a detection device performs a coating quality inspection on a coated film area of a diaphragm to be inspected, determines the abnormal start position and abnormal end position of an area with abnormal coating quality, and sends an identification signal to an identification device. In response to the identification signal, the identification device prints an abnormal start identification and an abnormal end identification at the positions corresponding to the abnormal start position and the abnormal end position respectively in the non-coated film area of the diaphragm. Moreover, the content of the abnormal start identification and the abnormal end identification also indicates the coated film area where the area with abnormal coating quality is located. Therefore, subsequently, the diaphragm section where the area with abnormal coating quality is located can be determined from the diaphragm based on the abnormal start identification and the abnormal end identification. Then, based on the coated film area indicated by the content of the abnormal start identification and the abnormal end identification, the area with abnormal coating quality can be located, that is, the overlapping area of this coated film area and this diaphragm section. Therefore, this diaphragm abnormal position identification solution can accurately identify the specific position of the area with abnormal coating quality in the diaphragm. And regardless of which coated film area the area with abnormal coating quality is in, an identification is printed in the non-coated film area of the diaphragm. Then, the identification of the areas with abnormal coating quality in multiple coated film areas can be achieved by one identification device, without setting an identification device for each coated film area, thus reducing the number of identification devices for identifying the areas with abnormal coating quality and lowering the production cost.

[0156] In some embodiments, the diaphragm abnormal position identification system further includes a cutting device for detecting the identification in the non-coated film area of the diaphragm. Correspondingly, in response to detecting the abnormal start identification, the cutting device controls the rewinding device to stop to display the abnormal start position of the area with abnormal coating quality in the diaphragm; in response to detecting the abnormal end identification, the cutting device controls the rewinding device to stop to display the abnormal end position of the area with abnormal coating quality in the diaphragm; based on the abnormal start position, the abnormal end position, and the coated film area indicated by the content of the abnormal start identification and the abnormal end identification, the area with abnormal coating quality is located from the coated film area in the diaphragm.

[0157] Exemplarily, an identification detection module is installed at the unwinding device of the cutting device. During the transmission of the diaphragm, the identification detection module faces the non-coated film area of the diaphragm. In response to detecting the abnormal start identification or the abnormal end identification, the identification detection module sends a stop signal to the rewinding device, and in response to the stop signal, the rewinding device controls itself to stop. Exemplarily, the cutting device can be a cold pressing device, a slitting device, or other devices that need to cut the area with abnormal coating quality of the diaphragm.

[0158] Exemplarily, the identification is printed in the edge tab area of the diaphragm. Correspondingly, the cutting device is used to detect the identification in the edge tab area of the diaphragm. Correspondingly, during the transmission of the diaphragm, the identification detection module always faces the edge tab area of the diaphragm.

[0159] In the embodiment of the present application, the cutting device detects the identification in the non-coated film area of the diaphragm. In response to detecting an abnormal start identification, the winding device is controlled to stop, so that the abnormal start position of the abnormal coating quality area in the diaphragm can be displayed. And, in response to detecting an abnormal end identification, the winding device is controlled to stop again, so that the abnormal end position of the abnormal coating quality area in the diaphragm can be displayed. The area between the abnormal start position and the abnormal end position is the diaphragm section where the abnormal coating quality area is located. Combining with the coating film area indicated by the content of the abnormal start identification and the abnormal end identification, the abnormal coating quality area can be quickly located from the coating film area in the diaphragm, so as to determine whether to cut the abnormal coating quality area based on the coating condition of the abnormal coating quality area.

[0160] Exemplarily, other information can be combined to determine the treatment measures for the abnormal coating quality area. For example, information such as the detection result of the detection device, the application scenario of the diaphragm, and the type of coating material is not limited in the embodiment of the present application.

[0161] In addition, the embodiment of the present application also proposes a detection device, which includes: a memory, a processor, and a diaphragm abnormal position identification program stored on the memory and executable on the processor. The diaphragm abnormal position identification program is configured to implement the steps of the diaphragm abnormal position identification method as described above.

[0162] In addition, the embodiment of the present application also proposes an identification device, which includes: a memory, a processor, and a diaphragm abnormal position identification program stored on the memory and executable on the processor. The diaphragm abnormal position identification program is configured to implement the steps of the diaphragm abnormal position identification method as described above.

[0163] In addition, the embodiment of the present application also proposes a storage medium, on which a diaphragm abnormal position identification program is stored. When the diaphragm abnormal position identification program is executed by a processor, it implements the steps of the diaphragm abnormal position identification method as described above.

[0164] It should be noted that the above-described work process is only illustrative and does not limit the protection scope of the present application. In actual applications, those skilled in the art can select some or all of them according to actual needs to achieve the purpose of the solution of this embodiment, and there is no limitation here.

[0165] In addition, for the technical details not described in detail in this embodiment, reference can be made to the diaphragm abnormal position identification method provided in any embodiment of the present application, which will not be elaborated here.

[0166] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions that fall within the scope of the claims.

Claims

1. A method for marking abnormal position of a diaphragm, characterized in that: The method for identifying abnormal position of the diaphragm, which is performed by a detection device, includes: Performing coating quality inspection on a coating film area in a membrane to be inspected, wherein the membrane includes at least one coating film area; Determine quality abnormality information based on the quality detection result, wherein the quality abnormality information includes a coating film area where a coating quality abnormality region is located, and an abnormal starting position and an abnormal ending position of the coating quality abnormality region; Sending an identification signal to an identification device based on the quality abnormality information, wherein the identification signal is used to instruct the identification device to print an abnormal start mark and an abnormal end mark at the non-coated film area of ​​the film sheet corresponding to the abnormal start position and the abnormal end position, respectively, and the contents of the abnormal start mark and the abnormal end mark indicate the coated film area where the coating quality abnormal area is located; Wherein, sending an identification signal to an identification device based on the abnormal quality information includes: Determine a first time point at which the abnormal starting position passes through the identification device and a second time point at which the abnormal ending position passes through the identification device; Based on the first time point and the second time point, the identification signal is sent to the identification device, and the identification signal is used to instruct the identification device to print the abnormal start mark in the non-coated film area at the first time point, and to print the abnormal end mark in the non-coated film area at the second time point.

2. The method according to claim 1, characterized in that The determining a first time point at which the abnormal starting position passes through the identification device and a second time point at which the abnormal ending position passes through the identification device comprises: Determine the transmission time required for any position in the film to be transmitted from the detection device to the identification device according to the distance between the detection device and the identification device and the transmission speed of the film; The first time point is determined based on a third time point when the abnormal starting position passes through the detection device and the transmission duration, and the second time point is determined based on a fourth time point when the abnormal ending position passes through the detection device and the transmission duration.

3. The method according to claim 1, characterized in that The sending the identification signal to the identification device based on the first time point and the second time point includes: sending a first identification signal to the identification device at the first time point, and sending a second identification signal to the identification device at the second time point; The first identification signal is used to instruct the identification device to print the abnormal start identification in the non-coated film area, and the second identification signal is used to instruct the identification device to print the abnormal end identification in the non-coated film area.

4. The method according to claim 1, characterized in that The sending the identification signal to the identification device based on the first time point and the second time point includes: Sending a third identification signal carrying the first time point and a fourth identification signal carrying the second time point to the identification device; The third identification signal is used to instruct the identification device to print the abnormal start identification in the non-coated film area at the first time point, and the fourth identification signal is used to instruct the identification device to print the abnormal end identification in the non-coated film area at the second time point.

5. The method according to claim 1, characterized in that The determining of quality abnormality information based on the quality detection result includes: For any coating film area, if a target number of detection points appear in succession among multiple detection points in this round of detection that do not meet the reference mass range, the continuous detection points that do not meet the reference mass range are determined as abnormal points; Determine the abnormal starting position of the coating quality abnormal area based on the positions of multiple detection points of the front wheel detection, the front wheel detection is a round of detection before the current round of detection, and the abnormal point does not exist during the detection; The abnormal end position of the coating quality abnormal area is determined based on the positions of multiple detection points of the rear wheel detection, which is a round of detection after the current round of detection and in which the abnormal point does not exist.

6. The method according to claim 5, characterized in that The method of determining the abnormal starting position of the coating quality abnormal area based on the positions of the plurality of detection points detected by the front wheel comprises: Determine the position of the last detection point among the multiple detection points detected by the front wheel as the abnormal starting position of the coating quality abnormal area; The method of determining the abnormal end position of the coating quality abnormal area based on the positions of the plurality of detection points detected by the rear wheel includes: The position of the first detection point among the plurality of detection points of the rear wheel detection is determined as the abnormal end position of the coating quality abnormal area.

7. The method according to claim 1, characterized in that The non-coated film area includes the edge tab area of ​​the diaphragm.

8. The method according to claim 1, characterized in that The abnormal start mark and the abnormal end mark include a two-dimensional code mark and / or a text mark, and the contents of the two-dimensional code mark and the text mark indicate the coating film area where the coating quality abnormal area is located.

9. A method for marking abnormal position of a diaphragm, characterized in that: Executed by a marking device, the diaphragm abnormal position marking method comprises: Receiving an identification signal from a detection device, wherein the identification signal is sent by the detection device based on quality abnormality information of a film to be detected, wherein the film includes at least one coating film area, and the quality abnormality information includes the coating film area where the coating quality abnormal area is located, and an abnormal starting position and an abnormal ending position of the coating quality abnormal area; In response to the identification signal, an abnormal start identification and an abnormal end identification are respectively printed at the non-coated film area of ​​the film corresponding to the abnormal start position and the abnormal end position, and the contents of the abnormal start identification and the abnormal end identification indicate the coated film area where the coating quality abnormal area is located; The process of the detection device sending the identification signal based on the quality abnormality information of the membrane to be detected includes: Determine a first time point at which the abnormal starting position passes through the identification device and a second time point at which the abnormal ending position passes through the identification device; Based on the first time point and the second time point, the identification signal is sent to the identification device, and the identification signal is used to instruct the identification device to print the abnormal start mark in the non-coated film area at the first time point, and to print the abnormal end mark in the non-coated film area at the second time point.

10. The method according to claim 9, characterized in that In response to the identification signal, printing an abnormal start identification and an abnormal end identification at the non-coated film area of ​​the film sheet corresponding to the abnormal start position and the abnormal end position respectively includes: printing the abnormal start mark on the non-coated film area of ​​the film in response to a first mark signal, wherein the first mark signal is sent by the detection device at the first time point; The abnormal end mark is printed on the non-coated film area of ​​the film in response to a second mark signal, wherein the second mark signal is sent by the detection device at the second time point.

11. The method according to claim 9, characterized in that In response to the identification signal, printing an abnormal start identification and an abnormal end identification at the non-coated film area of ​​the film sheet corresponding to the abnormal start position and the abnormal end position respectively includes: In response to a third identification signal carrying the first time point, waiting until the first time point to print the abnormal start identification on the non-coated film area of ​​the film, the third identification signal being sent by the detection device before the first time point; In response to a fourth identification signal carrying the second time point, the abnormal end identification is printed on the non-coated film area of ​​the film at the second time point, and the fourth identification signal is sent by the detection device before the second time point.

12. The method according to claim 9, characterized in that In response to the identification signal, printing an abnormal start identification and an abnormal end identification at the non-coated film area of ​​the film sheet corresponding to the abnormal start position and the abnormal end position respectively includes: In response to the identification signal, the abnormal start identification and the abnormal end identification are respectively printed on the side ear area of ​​the diaphragm corresponding to the abnormal start position and the abnormal end position.

13. The method according to claim 9, characterized in that The abnormal start mark and the abnormal end mark include a two-dimensional code mark and / or a text mark, and the contents of the two-dimensional code mark and the text mark indicate the coating film area where the coating quality abnormal area is located.

14. The method according to claim 9, characterized in that The identification device comprises an identification printing module and an identification detection module. After the abnormal start identification and the abnormal end identification are respectively printed on the non-coated film area of ​​the film corresponding to the abnormal start position and the abnormal end position in response to the identification signal, the method further comprises: Performing identification detection on the non-coated film area of ​​the film sheet by the identification detection module; In the case where the mark is not detected, a prompt message is output, wherein the prompt message is used to prompt that the mark is not printed successfully.

15. A diaphragm abnormal position identification system, characterized in that: The system includes a membrane transmission device, a detection device and a marking device; The membrane transmission device is used to carry the membrane to be detected and drive the membrane to move along the length direction of the membrane; the membrane includes at least one coated membrane area; The detection device is located above the film transmission device and scans and detects the film along the film width direction; the detection device is used to detect the coating quality of the coating film area in the film, determine the abnormal starting position and abnormal ending position of the coating quality abnormal area, and determine the first time point when the abnormal starting position passes through the identification device and the second time point when the abnormal ending position passes through the identification device; based on the first time point and the second time point, send an identification signal to the identification device; The identification device is located on one side of the film transmission device and has a preset distance with the detection device in the length direction of the film; the identification device is used to respond to the identification signal, print an abnormal start mark at the non-coated film area of ​​the film corresponding to the abnormal start position at the first time point, and print an abnormal end mark at the non-coated film area corresponding to the abnormal end position at the second time point, and the contents of the abnormal start mark and the abnormal end mark indicate the coated film area where the coating quality abnormal area is located.

16. The system of claim 15, wherein: The system also includes a cutting device; The cutting device is used to detect the mark in the non-coated film area of ​​the film; In response to detecting the abnormal start mark, controlling the winding device to stop to display the abnormal start position of the coating quality abnormal area in the film; In response to detecting the abnormal end mark, controlling the winding device to stop to display the abnormal end position of the coating quality abnormal area in the film; Based on the abnormal start position, the abnormal end position, and the coating film area indicated by the contents of the abnormal start mark and the abnormal end mark, the coating quality abnormal area is located from the coating film area in the film sheet.

17. A detection device, characterized in that: The device comprises: a memory, a processor, and a diaphragm abnormal position identification program stored in the memory and executable on the processor, wherein the diaphragm abnormal position identification program is configured to implement the steps of the diaphragm abnormal position identification method according to any one of claims 1 to 8.

18. A marking device, characterized in that: The device comprises: a memory, a processor, and a diaphragm abnormal position identification program stored in the memory and executable on the processor, wherein the diaphragm abnormal position identification program is configured to implement the steps of the diaphragm abnormal position identification method as described in any one of claims 9 to 14.

19. A storage medium, characterized in that: The storage medium stores a diaphragm abnormal position identification program, and when the diaphragm abnormal position identification program is executed by the processor, the steps of the diaphragm abnormal position identification method according to any one of claims 1 to 14 are implemented.

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