Pole piece processing method and pole piece processing equipment

Abstract

The invention provides a pole piece processing method and pole piece processing device.The pole piece processing method is applied to the pole piece processing device.The pole piece processing method comprises the steps that a plurality of mark codes are sequentially arranged on a pole piece film roll at intervals; one tag code in the plurality of tag codes is used as a target tag code; binding the target tag code with target detection data corresponding to the target tag code; the target detection data is detection data of a film roll corresponding to the target mark code in the pole piece film roll; and in the process of winding the film roll corresponding to the target mark code, in response to the abnormality of the target detection data, scrapping the film roll corresponding to the target mark code. Through the mode, the scrapping accuracy can be improved, so that the possibility that defective products flow out is reduced, and the yield of battery cells formed by the pole pieces is improved.

Description

Technical Field

[0001] This application relates to the technical field of lithium battery preparation, and particularly relates to a method for processing a pole piece and a pole piece processing device. Background Art

[0002] With the development of the times, lithium batteries are widely used in energy systems such as hydraulic, thermal, wind, or solar energy, as well as in fields such as electric vehicles or other electric devices. In practice, when preparing lithium batteries, corresponding specifications of pole pieces are prepared according to requirements, and then the pole pieces are wound to form battery cores to obtain corresponding lithium batteries. In the existing method for processing pole pieces, when it is detected that there is an abnormality in the pole piece film roll, the pole piece film roll to be scrapped is usually labeled manually by stopping the machine. This method has the risks of poor accuracy of the labeling position and easy self-dropping of the labeling object, resulting in low accuracy of scrapping, a high possibility of defective products flowing out, and a reduction in the yield of the battery cores formed by the pole pieces. Summary of the Invention

[0003] The main technical problem to be solved by this application is to provide a method for processing a pole piece and a pole piece processing device, which can improve the accuracy of scrapping, reduce the possibility of defective products flowing out, and improve the yield of the battery cores formed by the pole pieces.

[0004] In a first aspect, this application provides a method for processing a pole piece, which is applied to a pole piece processing device. The processing method includes: sequentially and at intervals setting a plurality of marking codes on a pole piece film roll; using one of the plurality of marking codes as a target marking code; binding the target marking code and target detection data corresponding to the target marking code; the target detection data being the detection data of the film roll corresponding to the target marking code in the pole piece film roll; and during the winding process of the film roll corresponding to the target marking code, in response to the abnormality of the target detection data, performing a scrapping process on the film roll corresponding to the target marking code.

[0005] In the technical solution of the embodiments of this application, by sequentially and at intervals setting a plurality of marking codes on the pole piece film roll in the preparation process of the pole piece, and after obtaining the target detection data of the film roll corresponding to the target marking code in the pole piece film roll, binding the target marking code and the target detection data, it is possible to perform a scrapping process on the film roll with abnormal target detection data during the winding process of the pole piece later. Based on the setting of the marking codes, the binding of the target detection data and the target marking code, and the scrapping process of the film roll with abnormal target detection data during the winding process, automatic defect detection of the pole piece film roll and automatic scrapping process of the pole piece film roll can be realized, without the need for manual labeling of abnormal film rolls, reducing the possibility that defective products are not accurately and effectively scrapped due to inaccurate manual operations and easy self-dropping of labels, thereby improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield of the battery cores formed by the pole pieces.

[0006] In some embodiments, the processing method further includes: during the die-cutting process of the film roll corresponding to the target marking code, in response to abnormal target detection data, skipping the film roll corresponding to the target marking code.

[0007] In the technical solution of the embodiments of the present application, during the die-cutting stage of the pole piece film roll, target detection data is obtained based on the target marking code. The target detection data specifically may refer to the detection data obtained in the stage before the die-cutting process of the pole piece film roll. For example, it may be the detection data corresponding to the coating process and the cold pressing process respectively. During the die-cutting stage, only the film rolls with normal detection data can be die-cut, while the film rolls with abnormal detection data are skipped. Based on this method, since the film rolls with abnormal detection data will ultimately be scrapped, there is no need to perform die-cutting of the tab, reducing the ineffective workload and improving the processing efficiency. Moreover, in the stage before the die-cutting process, there is no need to judge whether the detection data is abnormal or perform any processing on the film rolls with abnormal detection data. Since the pole piece film rolls processed in the die-cutting stage have been slit to a relatively short film roll length compared to the pole piece film rolls processed in the stages before die-cutting (such as the coating process and the cold pressing process), skipping processing is performed only in the die-cutting stage and the skipped film rolls are scrapped only in the subsequent winding stage, which can reduce the minimum unit quantity of the film rolls for scrap processing, thereby reducing waste during scrap processing and improving the utilization rate of the pole piece film rolls.

[0008] In some embodiments, the target detection data includes first target detection data or second target detection data; the processing method further includes: during the die-cutting process of the film roll corresponding to the target marking code, identifying the target marking code and obtaining the first target detection data corresponding to the target marking code, where the first target detection data includes coating data and cold pressing data; during the winding process of the film roll corresponding to the target marking code, identifying the target marking code and obtaining the second target detection data corresponding to the target marking code, where the second target detection data includes coating data, cold pressing data, and die-cutting data.

[0009] In the technical solution of the embodiment of the present application, during the die-cutting process of the pole piece film roll, target detection data is obtained based on the target marking code. The target detection data may specifically refer to the detection data obtained before the die-cutting process of the pole piece film roll. For example, it may be the detection data corresponding to the coating process and the cold pressing process respectively. During the die-cutting process, only the film rolls with normal detection data are die-cut, while the film rolls with abnormal detection data are skipped. Based on this method, since the film rolls with abnormal detection data will ultimately be scrapped, there is no need to die-cut the tabs, reducing the ineffective workload and improving the processing efficiency. Moreover, in the stage before the die-cutting process, there is no need to judge whether the detection data is abnormal or perform any processing on the film rolls with abnormal detection data. Since the pole piece film rolls processed in the die-cutting process have been slit to a relatively short film roll length compared to the pole piece film rolls processed in the stages before die-cutting (such as the coating process and the cold pressing process), skipping processing is only carried out in the die-cutting process and the skipped film rolls are scrapped only in the subsequent winding process, which can reduce the minimum unit quantity of the scrapped film rolls, thereby reducing the waste during the scrapping process and improving the utilization rate of the pole piece film rolls.

[0010] In addition, during the winding process, by combining the detection data corresponding to the coating process, the cold pressing process, and the die-cutting process respectively, it is comprehensively determined whether there is a situation where the detection data of the film roll to be wound is abnormal. If so, regardless of whether the film roll with abnormal target detection data has undergone skipping processing, it is scrapped, thereby further improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield rate of the battery cells formed by the pole pieces.

[0011] In some embodiments, during the die-cutting process of the film roll corresponding to the target marking code, in response to the abnormal target detection data, skipping the film roll corresponding to the target marking code includes: during the die-cutting process of the film roll corresponding to the target marking code, in response to at least one detection data in the first target detection data being abnormal, skipping the film roll corresponding to the target marking code.

[0012] In the technical solution of the embodiment of the present application, by carrying out the skipping process only in the die-cutting process and scrapping the skipped film rolls only in the subsequent winding process, the minimum unit quantity of the scrapped film rolls can be reduced, thereby reducing the waste during the scrapping process and improving the utilization rate of the pole piece film rolls.

[0013] In some embodiments, during the winding process of the film roll corresponding to the target marking code, in response to abnormal target detection data, the film roll corresponding to the target marking code is scrapped, including: during the winding process of the film roll corresponding to the target marking code, in response to at least one detection data in the second target detection data being abnormal, the film roll corresponding to the target marking code is scrapped.

[0014] In the technical solution of the embodiment of the present application, by combining the detection data corresponding to the coating process, the cold pressing process, and the die-cutting process respectively in the winding stage, it is comprehensively determined whether there is an abnormal situation in the detection data of the film roll to be wound. If so, regardless of whether the film roll with abnormal target detection data has been skipped, it is scrapped, thereby further improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield of the battery cells formed by the electrode sheets.

[0015] In some embodiments, a plurality of marking codes are sequentially and spacedly arranged on the electrode sheet film roll, including: on the electrode sheet film roll after the coating process, a plurality of marking codes are sequentially and spacedly arranged; binding the target marking code and the target detection data corresponding to the target marking code includes: binding the target detection data obtained respectively in the coating process and the process performed on the electrode sheet film roll after the coating process with the target marking code.

[0016] In the technical solution of the embodiment of the present application, by sequentially and spacedly arranging a plurality of marking codes on the electrode sheet film roll in the preparation process of the electrode sheet, and binding the target marking code with the target detection data after obtaining the target detection data of the film roll corresponding to the target marking code in the electrode sheet film roll, in the subsequent winding process of the electrode sheet, the film roll with abnormal target detection data can be scrapped. Based on the setting of the marking code, the binding of the target detection data and the target marking code, and the scrapping of the film roll with abnormal target detection data during the winding process, automatic defect detection of the electrode sheet film roll and automatic scrapping processing of the electrode sheet film roll can be realized, without manual labeling of the abnormal film roll, reducing the possibility that defective products are not accurately and effectively scrapped due to inaccurate manual operation and easy self-dropping of the label, thereby improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield of the battery cells formed by the electrode sheets.

[0017] In some embodiments, the target detection data includes at least one of coating data, cold pressing data, and die cutting data; binding the target detection data obtained respectively in the coating process and the process performed on the electrode sheet film roll after the coating process to the target identification code includes: after performing the coating process and setting the target identification code on the film roll corresponding to the target identification code, binding the target identification code and the coating data; and / or, after performing the cold pressing process on the film roll corresponding to the target identification code, binding the target identification code and the detection data corresponding to the cold pressing process; and / or, after performing the die cutting process on the film roll corresponding to the target identification code, binding the target identification code and the detection data corresponding to the die cutting process.

[0018] In the technical solution of the embodiment of the present application, by sequentially and intermittently setting a plurality of identification codes on the electrode sheet film roll in the preparation process of the electrode sheet, and after obtaining the target detection data of the film roll corresponding to the target identification code in the electrode sheet film roll, binding the target identification code to the target detection data. Subsequently, when winding the electrode sheet, the film roll with abnormal target detection data can be scrapped. It is possible to realize automatic defect detection of the electrode sheet film roll and automatic scrapping of the electrode sheet film roll based on the setting of the identification code, the binding of the target detection data to the target identification code, and the scrapping of the film roll with abnormal target detection data during the winding process, without the need for manual labeling of abnormal film rolls, reducing the possibility that defective products are not accurately and effectively scrapped due to inaccurate manual operation and easy self - shedding of labels, thereby improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield of the battery cells formed by the electrode sheets.

[0019] In some embodiments, the coating data includes at least one of coating position, coating weight, coating speed, drying temperature, drying air frequency, and coating viscosity; and / or, the cold pressing data includes at least one of cold pressing thickness, cold pressing pressure, cold pressing speed, and electrode sheet tension; and / or, the detection data corresponding to the die cutting process includes at least one of die cutting width, die cutting electrode sheet image, die cutting power, die cutting frequency, and die cutting pulse width.

[0020] In the technical solution of the embodiment of the present application, during the preparation process of the electrode sheet, a plurality of marking codes are sequentially and spacedly arranged on the electrode sheet film roll. After obtaining the target detection data of the film roll corresponding to the target marking code in the electrode sheet film roll, the target marking code is bound to the target detection data. Subsequently, when winding the electrode sheet, the film roll with abnormal target detection data can be scrapped. Based on the setting of the marking code, the binding of the target detection data to the target marking code, and the scrapping of the film roll with abnormal target detection data during the winding process, automatic defect detection of the electrode sheet film roll and automatic scrapping processing of the electrode sheet film roll can be realized, without manual labeling of abnormal film rolls, reducing the possibility that defective products are not accurately and effectively scrapped due to inaccurate manual operation and easy self-dropping of labels, thereby improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield rate of the battery cells formed by the electrode sheets.

[0021] In some embodiments, the marking code is located in the insulating layer area or the tab area of the electrode sheet film roll.

[0022] In the technical solution of the embodiment of the present application, by arranging the marking code in the insulating layer area and the tab area of the electrode sheet film roll, compared with arranging the marking code in the coating area, the existence duration of the marking code can be effectively increased, and the possibility that the marking code is covered or dissolved by the coating material or damaged or disappeared for other reasons can be reduced. Further, the accuracy of scrapping is improved, the possibility of defective products flowing out is reduced, and the yield rate of the battery cells formed by the electrode sheets is improved.

[0023] In some embodiments, sequentially and spacedly arranging a plurality of marking codes on the electrode sheet film roll includes: on the electrode sheet film roll, a marking code is sequentially arranged at every preset film roll length; when the marking code is located in the tab area of the electrode sheet film roll, the preset film roll length is less than the preset tab length.

[0024] In the technical solution of the embodiment of the present application, by making the preset film roll length less than the preset tab length, after the tab is cut out through die-cutting in the tab area, the marking code can still be effectively retained on the cut tab, so as to ensure the normal operation of the judgment of the target detection data and the corresponding scrapping process during the subsequent winding process, further improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield rate of the battery cells formed by the electrode sheets.

[0025] In some embodiments, the processing method further includes: after winding the film roll corresponding to the target marking code to form a battery cell, in response to all the detection data corresponding to the winding process being normal, binding the target marking code and the detection data corresponding to the winding process; setting a battery cell information code on the battery cell, and binding all the target detection data to the battery cell information code respectively.

[0026] In the technical solution of the embodiment of the present application, by acquiring corresponding detection data during the winding process, and when it is determined that the winding data is normal, binding it to the target marking code, and after the battery cell is formed, binding all the target detection data corresponding to the target marking codes in the battery cell to the battery cell information code for subsequent information traceability, the reliability of the battery cell is improved.

[0027] In some embodiments, the processing method further includes: after winding the film roll corresponding to the target marking code to form a battery cell, in response to the detection data corresponding to the winding process being abnormal, scrapping the battery cell.

[0028] In the technical solution of the embodiment of the present application, by acquiring corresponding detection data during the winding process, and when it is determined that the winding data is abnormal, scrapping the battery cell with defects generated by the winding process, the possibility of defective products flowing out can be reduced, and the yield rate of the battery cells formed by the electrode sheets is improved.

[0029] In a second aspect, the present application provides a device for processing electrode sheets, including: a coding device for sequentially and at intervals set a plurality of marking codes on the electrode sheet film roll; one of the plurality of marking codes is used as the target marking code; an electrode sheet preparation device for binding the target marking code and the target detection data corresponding to the target marking code; wherein, the target detection data is the detection data of the film roll corresponding to the target marking code in the electrode sheet film roll; during the winding process of the film roll corresponding to the target marking code, in response to the target detection data being abnormal, performing a scrapping process on the film roll corresponding to the target marking code.

[0030] It can be understood that the beneficial effects of the above second aspect can refer to the relevant descriptions in the above first aspect, and will not be elaborated here.

[0031] The above description is only an overview of the technical solution of the present application. In order to be able 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 purposes, features and advantages of the present application more obvious and understandable, the following specifically describes the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0033] Figure 1 It is a schematic flowchart of the first embodiment of the method for processing electrode sheets provided by the present application.

[0034] Figure 2 Schematic flow chart of the second embodiment of the method for processing the electrode sheet provided in this application.

[0035] Figure 3 Schematic structural diagram of the first embodiment of the electrode sheet roll provided in this application.

[0036] Figure 4 Schematic structural diagram of the second embodiment of the electrode sheet roll provided in this application.

[0037] Figure 5 Schematic structural diagram of the third embodiment of the electrode sheet roll provided in this application.

[0038] Figure 6 Schematic structural diagram of the fourth embodiment of the electrode sheet roll provided in this application.

[0039] Figure 7 Schematic structural diagram of an embodiment of the electrode sheet processing device provided in this application. Detailed implementation manners

[0040] Next, the technical solutions in the embodiments of this application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without creative efforts shall fall within the protection scope of this application.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments 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 accompanying drawings are intended to cover non-exclusive inclusion.

[0042] 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 "plurality" is more than two, unless otherwise specifically defined.

[0043] Reference to "embodiment" in this document means that the specific features, structures, or characteristics described in connection with the embodiment may be included in at least one embodiment of the present application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein may be combined with other embodiments.

[0044] In the description of the embodiments of the present application, the term "and / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B may represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally represents an "or" relationship between the associated objects before and after.

[0045] In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two). Similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple sheets" refers to two or more sheets (including two sheets).

[0046] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, technical terms such as "installation", "connection", "connection", "fixation" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may also be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may 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 circumstances.

[0047] With the development of the times, lithium batteries are widely used in energy systems such as hydraulic, thermal, wind, or solar energy, as well as in fields such as electric vehicles or other electric devices. In practice, when preparing lithium batteries, corresponding specifications of electrode sheets are prepared according to requirements, and then the electrode sheets are wound to form battery cores to obtain corresponding lithium batteries. When preparing the battery cores of lithium batteries, it is usually necessary to perform coating treatment, cold pressing treatment, die cutting treatment, and winding treatment on the electrode sheet rolls in sequence. Among them, the coating treatment can be to coat the corresponding electrode active material on the electrode sheet roll, and when preparing electrode sheets of different polarities, different electrode active materials are coated respectively. The cold pressing treatment can be to compact the electrode coating formed by the above coating treatment through a high-pressure roller press to improve the electrode density and mechanical stability. The die cutting treatment can be to cut the electrode sheet roll into electrode sheets with a specific length and punch out electrode tabs in the tab area of the electrode sheet (if the electrode sheet of a full-tab lithium battery is prepared, there is no need to punch out electrode tabs), forming cathode electrode sheets or anode electrode sheets. The winding treatment can be to wind the cathode electrode sheet, the separator roll, and the anode electrode sheet to form a battery core.

[0048] During the process of each of the above-mentioned treatments, abnormalities may occur on the corresponding pole piece film roll due to incorrect corresponding parameters during processing, mechanical equipment malfunctions, environmental reasons, or other reasons. If a lithium battery cell is prepared based on a pole piece film roll with abnormalities, it is likely to result in a relatively high defective rate of the finally formed cell, and thus easily lead to various safety accidents.

[0049] In the existing methods for treating pole pieces, usually when an abnormality is detected in the pole piece (for example, when an abnormality in terms of weight, thickness, microstructure, etc. is detected in the pole piece film roll), first, the entire section of the pole piece film roll is scrapped. This method results in a huge waste, and all other normal parts of the pole piece film roll will be wasted. Therefore, this scrapping method is rarely used. Second, the machine can be manually stopped, and when the machine is stopped, a yellow label is attached to the location on the pole piece film roll where the abnormality is detected to achieve marking. Subsequently, the film roll with the yellow label is scrapped. This method has two problems. One is that the pole piece film roll lacks a precise positioning system during high-speed operation. After the machine is manually stopped, the operator can only estimate the location of the abnormality on the pole piece film roll through the equipment counter or by visual inspection. In practice, the yellow label often deviates from the location of the abnormality by 5 to 10 meters, resulting in incomplete scrapping of the film roll with the abnormality, and thus easily leading to the outflow of defective products. The other is that the yellow label set on the pole piece film roll is usually a yellow tape. During the subsequent operation of the pole piece film roll, the yellow tape is likely to shift relative to the film roll or directly fall off due to mechanical stress, also resulting in incomplete scrapping of the film roll with the abnormality, and thus easily leading to the outflow of defective products.

[0050] In summary, the existing methods for treating pole pieces have a low precision in scrapping, resulting in a relatively high possibility of defective products flowing out, and reducing the yield rate of the cells formed by the pole pieces.

[0051] Based on the above considerations, the present application provides a method for treating pole pieces and a pole piece treatment device. Among them, the method for treating pole pieces includes: sequentially and at intervals setting a plurality of marking codes on the pole piece film roll; one of the plurality of marking codes being used as a target marking code; binding the target marking code and the target detection data corresponding to the target marking code; the target detection data being the detection data of the film roll corresponding to the target marking code in the pole piece film roll; and during the process of winding the film roll corresponding to the target marking code, in response to the abnormality of the target detection data, scrapping the film roll corresponding to the target marking code. This can improve the precision of scrapping, reduce the possibility of defective products flowing out, and improve the yield rate of the cells formed by the pole pieces.

[0052] According to some embodiments of the present application, please refer to Figure 1 , Figure 1Schematic flow chart of the first embodiment of the method for processing a pole piece provided in this application. The method for processing a pole piece is applied to a pole piece processing device, which may include, but is not limited to, a coding mechanism, a coating mechanism, a cold pressing mechanism, a die cutting mechanism, a winding mechanism, and a processor; the method for processing a pole piece includes the following steps.

[0053] S101: Sequentially and at intervals, set a plurality of marking codes on the pole piece film roll.

[0054] The pole piece film roll may specifically refer to the film roll material to be subjected to coating treatment, cold pressing treatment, and die cutting treatment to form a pole piece. The length of the pole piece film roll may be several kilometers, and the length of the pole piece may be 4 - 30 meters. For example, the length of the pole piece may be 10 meters.

[0055] The marking code may specifically be a code that can obtain corresponding information through code scanning processing, including but not limited to barcodes and two-dimensional codes.

[0056] After completing the coating treatment of the pole piece film roll and after the pole piece active material coated on the pole piece film roll is dried, a plurality of marking codes may be sequentially and at intervals set on the pole piece film roll through the coding mechanism, so that the plurality of marking codes are respectively set on different segments of the pole piece film roll. Subsequently, by identifying the marking code, the detection data of the roll film at the position where the marking code is located may be bound to the marking code, or the detection data of the roll film at the position where the marking code is located may be obtained.

[0057] S102: Bind the target marking code and the target detection data corresponding to the target marking code.

[0058] Among them, the target detection data is the detection data of the roll film in the pole piece film roll corresponding to the target marking code.

[0059] Taking one of the plurality of marking codes as the target marking code as an example, during the coating treatment, when setting the target marking code, the distance between the position where the target marking code is located and the detection mechanism may be determined through an encoder, so as to determine the acquisition time of each detection data according to the moving speed of the pole piece film roll, the current moment, and the detection mechanism, and determine the target detection data of the roll film at the position where the target marking code is located, and then bind the target detection data of the roll film at the position where the target marking code is located to the target marking code, that is, bind the detection data of the coating treatment of the roll film at the position where the target marking code is located to the target marking code.

[0060] During the cold pressing treatment, when the target marking code is recognized, the target detection data of the roll film at the position where the target marking code is located may also be bound to the target marking code, that is, bind the detection data of the cold pressing treatment of the roll film at the position where the target marking code is located to the target marking code.

[0061] And in the die-cutting process, when the target marker code is recognized, the target detection data of the winding film at the position where the target marker code is located is bound to the target marker code, that is, the detection data of the die-cutting process of the winding film at the position where the target marker code is located is bound to the target marker code.

[0062] After each process, the target detection data obtained during the corresponding process can be bound to the target marker code, so that when the target marker code is recognized in any subsequent process, all the target detection data obtained in the processes before the arbitrary process can be obtained, which is convenient for corresponding anomaly analysis.

[0063] In practice, specifically, a code reader can be used to scan the target marker code to obtain the corresponding target identification code. For example, during the relative movement of the pole piece film roll relative to the code reader, each marker code can be scanned in sequence, that is, each marker code is used as the target marker code in sequence for corresponding code scanning processing, so as to obtain each marker code in sequence and perform subsequent processing such as binding of detection data.

[0064] S103: During the winding process of the film roll corresponding to the target marker code, in response to abnormal target detection data, the film roll corresponding to the target marker code is scrapped.

[0065] When winding the film roll corresponding to the target marker code, first, if it has been determined that the target detection data is abnormal in the process before the winding process, the film roll corresponding to the target marker code can be directly scrapped. Second, if it has not been determined that the target detection data is abnormal in the process before the winding process, but the target detection data is determined to be abnormal during the winding process, the film roll corresponding to the target marker code can also be scrapped.

[0066] In this application, by sequentially and intermittently setting multiple marker codes on the pole piece film roll in the preparation process of the pole piece, and after obtaining the target detection data of the film roll corresponding to the target marker code in the pole piece film roll, binding the target marker code to the target detection data. Subsequently, when winding the pole piece, the film roll with abnormal target detection data can be scrapped. It can realize automatic defect detection of the pole piece film roll and automatic scrapping of the pole piece film roll based on the setting of the marker code, the binding of the target detection data and the target marker code, and the scrapping of the film roll with abnormal target detection data during the winding process, without manual labeling of abnormal film rolls, reducing the possibility that defective products are not accurately and effectively scrapped due to inaccurate manual operation and easy self-dropping of labels, thereby improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield of the battery cells formed by the pole pieces.

[0067] According to some embodiments of the present application, please refer to Figure 2 ,Figure 2 Schematic flow chart of the second embodiment of the method for processing a pole piece provided in this application. The method for processing a pole piece in this embodiment includes the following steps: S201: Set a plurality of marking codes at intervals on the pole piece film roll in sequence.

[0068] Step S201 corresponds to step S101, which will not be elaborated here.

[0069] S202: Bind the target marking code and the target detection data corresponding to the target marking code. Among them, the target detection data is the detection data of the film roll corresponding to the target marking code in the pole piece film roll.

[0070] Step S202 corresponds to step S102, which will not be elaborated here.

[0071] S203: During the die-cutting process of the film roll corresponding to the target marking code, in response to abnormal target detection data, skip the film roll corresponding to the target marking code.

[0072] During the die-cutting process, the target detection data may include coating data and cold pressing data. If it is determined that at least one piece of information in the coating data and the cold pressing data is abnormal, during the die-cutting process, the step of skipping the film roll corresponding to the target marking code can be executed, that is, reset and re-cut, skip the film roll with abnormal conditions, and do not perform ear punching on the film roll with abnormal conditions. Instead, start punching the pole piece and its ears from the film roll with normal subsequent detection data.

[0073] It should be noted here that generally, during the cold pressing process, the pole piece film roll will be cut for the first time, and during the die-cutting process, the pole piece film roll will be cut for the second time to obtain the pole piece. The length of a single pole piece film roll after the first cut is less than the length of a single pole piece film roll before the first cut, but greater than the length of a single finally formed pole piece. If during the die-cutting process, it is recognized that the target detection data is normal, but the length of the film roll where the target marking code is located is less than the length of a single pole piece, the film roll corresponding to the target marking code is also skipped. For example, the length of the pole piece film roll after the first cut is 20 meters. If it is determined that the film roll from 0 to 5 meters is abnormal and needs to be skipped, the film roll from 5.1 to 15.1 meters can be punched to form the pole piece. Finally, the remaining 4.9 meters need to be skipped because its length is less than the length of a single pole piece (assumed to be 10 meters).

[0074] S204: During the winding process of the film roll corresponding to the target marking code, scrap the film roll that has been skipped.

[0075] In some embodiments, the target detection data includes first target detection data or second target detection data. The processing method may further include: During the die-cutting process of the film roll corresponding to the target marking code, the target marking code is identified, and the first target detection data corresponding to the target marking code is obtained. The first target detection data includes coating data and cold pressing data.

[0076] During the winding process of the film roll corresponding to the target marking code, the target marking code is identified, and the second target detection data corresponding to the target marking code is obtained. The second target detection data includes coating data, cold pressing data, and die-cutting data.

[0077] Among them, the coating data may refer to the detection data corresponding to the coating process collected during the coating process, the cold pressing data may refer to the detection data corresponding to the cold pressing process collected during the cold pressing process, and the die-cutting data may refer to the detection data corresponding to the die-cutting process collected during the die-cutting process.

[0078] Optionally, step S203 may specifically include: during the die-cutting process of the film roll corresponding to the target marking code, in response to at least one detection data in the first target detection data being abnormal, the film roll corresponding to the target marking code is skipped.

[0079] Optionally, step S204 may specifically include: during the winding process of the film roll corresponding to the target marking code, the film roll that has been skipped is scrapped, and in response to at least one detection data in the second target detection data being abnormal, the film roll corresponding to the target marking code is scrapped.

[0080] Specifically, during the winding process, when a film roll that skips the die-cutting stage is identified by means of the target marking code or the presence or absence of tabs, the film roll that has been skipped is cut off from the normal film roll and corresponding scrapping processing is performed.

[0081] In addition, during the winding process, since at this time, the die-cutting data has been updated and added to the target detection data, that is, during the die-cutting stage, the target detection data is the above-mentioned first target detection data, and during the winding stage, the target detection data is the above-mentioned second detection data. Therefore, during the winding stage, the target marking code can continue to be identified to obtain the target detection data, and when it is determined that the target detection data is abnormal, even if the die-cutting process does not skip the film roll corresponding to the target marking code, the film roll corresponding to the target marking code should also be scrapped.

[0082] In the die-cutting process stage of the pole piece film roll, target detection data is obtained based on the target marking code. The target detection data specifically refers to the detection data obtained in the stage before the die-cutting process of the pole piece film roll. For example, it can be the detection data corresponding to the coating process and the cold pressing process respectively. In the die-cutting process stage, only the film rolls with normal detection data are die-cut, while the film rolls with abnormal detection data are skipped. Based on this method, since the film rolls with abnormal detection data will ultimately be scrapped, there is no need to die-cut the tabs, reducing the ineffective workload and improving the processing efficiency. Moreover, in the stage before the die-cutting process, there is no need to judge whether the detection data is abnormal or perform any processing on the film rolls with abnormal detection data. Since the pole piece film rolls processed in the die-cutting process stage have been slit to a relatively short film roll length compared to the pole piece film rolls processed in the stages before the die-cutting process (such as the coating process and the cold pressing process), skipping processing is performed only in the die-cutting process stage and the skipped film rolls are scrapped only in the subsequent winding process stage, which can reduce the minimum unit quantity of the scrapped film rolls, thereby reducing the waste during the scrapping process and improving the utilization rate of the pole piece film rolls.

[0083] In addition, in the winding process stage, by combining the detection data corresponding to the coating process, the cold pressing process, and the die-cutting process respectively, it is comprehensively determined whether there is a situation where the detection data of the film roll to be wound is abnormal. If so, regardless of whether the film roll with abnormal target detection data has undergone skipping processing, it is scrapped, thereby further improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield rate of the battery cells formed by the pole pieces.

[0084] According to some embodiments of the present application, step S101 of this embodiment includes the following steps: On the pole piece film roll that has undergone the coating process, a plurality of marking codes are sequentially and spacedly arranged.

[0085] Step S102 of this embodiment includes the following steps: Bind the target detection data obtained respectively in the coating process and the process performed on the pole piece film roll after the coating process to the target marking code.

[0086] Specifically, the process performed on the pole piece film roll after the coating process may include cold pressing and / or die-cutting. In other examples, it may also include other processes performed on the pole piece film roll, which can be determined according to actual needs and are not limited here.

[0087] In addition, the binding of detection data and target marker code can be understood as informationally associating the detection data with the data corresponding to the target marker code, and establishing a mapping relationship between the detection data and the target marker code, so as to obtain all the detection data that have been bound to the target marker code by searching for the data corresponding to the target marker code.

[0088] The target detection data may include at least one of coating data, cold pressing data, and die-cutting data.

[0089] In this embodiment, the target detection data obtained in the coating process and the processing of the electrode film roll after the coating process are respectively bound to the target marking code, which may include the following steps: After coating the film roll corresponding to the target mark code and setting the target mark code, the target mark code and the coating data are bound. And / or, After the film roll corresponding to the target mark code is cold pressed, the target mark code and the cold pressing data are bound. And / or, After die-cutting the film roll corresponding to the target mark code, the target mark code and the die-cutting data are bound.

[0090] A plurality of marking codes can be arranged in sequence and at intervals on the coated and dried electrode film roll to reduce the possibility of the marking code being damaged or corroded by the coating process or the electrode active material, further improve the stability of the marking code, and thus improve the accuracy of subsequent scrapping.

[0091] After each processing is completed, the electrode film roll that has undergone the corresponding processing is inspected, and the detection data obtained by the detection is bound to the target mark code to continuously enrich the target detection data bound to the target mark code, so that the target detection data will increase the detection data corresponding to the processing after each processing.

[0092] In some embodiments, the coating data includes at least one of coating position, coating weight, coating speed, drying temperature, drying wind frequency and coating viscosity; and / or, The cold pressing data includes at least one of cold pressing thickness, cold pressing pressure, cold pressing speed and pole piece tension; and / or, The detection data corresponding to the die-cutting process includes at least one of a die-cutting width, a die-cutting pole piece image, a die-cutting power, a die-cutting frequency, and a die-cutting pulse width.

[0093] Specifically, the coating position can be the relative position between the electrode active material coated on the electrode film roll and the electrode film roll. For example, in the detection and judgment of the coating position, first, it is necessary to determine whether the distance between the edge of the electrode active material and the edge of the electrode film roll meets the condition of the preset edge spacing, and the preset edge spacing can be 5 mm, 7 mm, 10 mm or other spacings; second, if it is necessary to coat the electrode active material on both sides of the electrode film roll, it is necessary to make the coating areas of the electrode active materials coated on both sides of the electrode film roll correspond to each other, that is, it is necessary to determine whether the coating widths and coating positions of the electrode active materials coated on both sides of the electrode film roll are the same.

[0094] The coating weight can be the weight of the electrode active material on the electrode film roll. Since the coating thickness is usually constant, the coating weight can usually be determined according to the coating width or coating area of the electrode active material.

[0095] The coating speed can be the relative moving speed between the coating mechanism for coating the electrode active material and the electrode film roll.

[0096] The drying temperature can be the temperature used for drying after the electrode active material is coated.

[0097] The drying air frequency can be the air frequency used for drying after the electrode active material is coated.

[0098] The coating viscosity can be the viscosity of the electrode active material.

[0099] The cold pressing thickness can be the thickness of the electrode film roll after cold pressing treatment.

[0100] The cold pressing pressure can be the pressure used during the cold pressing treatment.

[0101] The cold pressing speed can be the cold pressing speed during the cold pressing treatment.

[0102] The electrode tension can be the tension of the electrode film roll after cold pressing treatment.

[0103] The die-cutting width can be the width of the electrode obtained after die-cutting treatment.

[0104] The die-cut electrode pattern can be the appearance image corresponding to the electrode obtained after die-cutting treatment. For example, it can be the image obtained by using a CCD (Charge Coupled Device) image sensor, that is, the CCD image.

[0105] The die-cutting power, die-cutting frequency, and die-cutting pulse width can be the parameters for controlling the die-cutting mechanism during die-cutting, respectively.

[0106] When judging the target detection data, in response to any one of the above information in the target detection data obtained by identifying the target marking code being abnormal, that is, when not meeting the corresponding preset conditions, it can be determined that the film roll corresponding to the target marking code is a defective product, and skip processing in the die-cutting processing stage and / or scrap processing in the winding processing stage are required.

[0107] In this application, in the preparation process of the electrode sheet, multiple marking codes are sequentially and spacedly arranged on the electrode sheet film roll. After obtaining the target detection data of the film roll corresponding to the target marking code in the electrode sheet film roll, the target marking code is bound to the target detection data. Subsequently, when winding the electrode sheet, the film roll with abnormal target detection data can be scrapped. Based on the setting of the marking code, the binding of the target detection data to the target marking code, and the scrapping of the film roll with abnormal target detection data during the winding process, automatic detection of defects in the electrode sheet film roll and automatic scrapping of the electrode sheet film roll can be realized, without the need for manual labeling of abnormal film rolls, reducing the possibility that defective products are not accurately and effectively scrapped due to inaccurate manual operations and easy self-dropping of labels, thereby improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield rate of the battery cells formed by the electrode sheets.

[0108] According to some embodiments of the present application, the marking code is located in the insulating layer area or the tab area of the electrode sheet film roll.

[0109] Please refer to Figures 3 to 6 , Figure 3 which is a schematic structural diagram of the first embodiment of the electrode sheet film roll provided by the present application, Figure 4 which is a schematic structural diagram of the second embodiment of the electrode sheet film roll provided by the present application, Figure 5 which is a schematic structural diagram of the third embodiment of the electrode sheet film roll provided by the present application, Figure 6 which is a schematic structural diagram of the fourth embodiment of the electrode sheet film roll provided by the present application.

[0110] As Figures 3 to 5 shown, the tab area 1 can refer to the area where the tabs are located in the electrode sheet film roll. The tab area 1 of the electrode sheet film roll is usually reserved for subsequent die-cutting to form tabs. The insulating layer area 2 can refer to the area where the insulating layer is located in the electrode sheet film roll. The insulating layer area 2 can play a role in avoiding short circuits, that is, reducing the possibility of short circuits caused by direct contact between the anode electrode sheet and the cathode electrode sheet. The coating area 3 can refer to the area where coating is performed in the electrode sheet film roll. The coating area 3 is the area where the electrode active material is coated. The marking code 4 can be a two-dimensional code, a bar code, or other types of codes.

[0111] As Figure 6As shown, the specific distribution of the coating area and the insulating layer area is as shown in the figure. During the die-cutting process, pre-cutting can be performed on the tab area between the two insulating layer areas, and then die-cutting can be performed on the insulating area and the tab area between the two insulating layer areas to cut the tabs. It should be noted that Figure 6 The shown electrode film roll is an electrode film roll to be prepared into a semi-tab battery. When the electrode film roll needs to be prepared into an electrode of any other type of battery, the electrode film roll can be die-cut with a dividing line of other shapes, or the tabs can not be cut (such as the electrode of a full-tab battery that does not require tab cutting). It can be determined according to specific requirements and is not limited here.

[0112] For example, assume Figure 6 The shown electrode film roll is an electrode film roll of a cathode electrode. By setting an insulating layer area composed of ceramic or other material particles between the coating area with active material and the area where the tabs to be cut are located, the burrs generated by die-cutting can be reduced, thereby improving the smoothness and reliability of the tabs generated by die-cutting.

[0113] It should be noted that when processing the electrode film roll of batteries with different forms, the batteries with a coated insulating layer area usually undergo tab die-cutting. For example: Prismatic batteries usually undergo tab die-cutting, and some cylindrical batteries also undergo tab die-cutting.

[0114] For full-tab batteries, there is no need to cut the tabs in the tab area. The entire tab area is retained as the tab, and after winding the electrode film roll, the corresponding area of the tab area is flattened or smoothed to complete the preparation of the full-tab battery.

[0115] The length of the marking code in the extending direction of the electrode film roll can be 2 mm, or 5 mm, or other lengths.

[0116] First, the insulating layer area is the area where no punching will be performed during die-cutting or any other processing. Therefore, the marking code can be set in the insulating layer area so that the marking code can be stably retained on the electrode film roll for a long time until the winding process.

[0117] Second, since the tabs will be punched out in the tab area, the marking code can be set on the area corresponding to the tab in the tab area so that the marking code can be stably retained on the electrode film roll for a long time until the winding process. It should be noted here that if the electrode to be prepared from the electrode film roll is an electrode of a full-tab lithium battery cell, the tab area will usually be entirely retained without punching. At this time, the stability of the marking code in the tab area is the best.

[0118] Third, after the coating process is completed and the electrode sheet module is dried, a plurality of marking codes may be set in the coating area, so that the marking codes can be stably retained on the electrode sheet film roll for a long time until the winding process stage.

[0119] In this application, by setting the marking codes in the insulating layer area and the tab area of the electrode sheet film roll, compared with setting the marking codes in the coating area, the existence duration of the marking codes can be effectively increased, the possibility that the marking codes are covered or dissolved by the coating material or damaged or disappeared for other reasons can be reduced, the accuracy of scrapping is further improved, the possibility of defective products flowing out is reduced, and the yield of the battery cells formed by the electrode sheets is increased.

[0120] According to some embodiments of this application, a plurality of marking codes are sequentially and spacedly arranged on the electrode sheet film roll, including: On the electrode sheet film roll, marking codes are sequentially set at intervals of a preset film roll length.

[0121] When the marking code is located in the tab area of the electrode sheet film roll, the preset film roll length is less than the preset tab length.

[0122] As Figure 3 shown, the tab length may refer to the length of the tab punched out in the tab area through die-cutting processing in the extending direction Dx of the electrode sheet film roll.

[0123] As Figure 3 shown, on the electrode sheet film roll, along the extending direction Dx of the electrode sheet film roll, marking codes are sequentially set at intervals of a preset film roll length S.

[0124] The preset film roll length is a length set according to the actual requirement of the marking code distribution density, and is used to represent the interval distance between adjacent marking codes in the extending direction Dx of the electrode sheet film roll. By reasonably setting the preset film roll length, the distribution density of the marking codes in the extending direction Dx of the electrode sheet film roll can reach a reasonable level.

[0125] Since the preset film roll length is less than the preset tab length, the marking codes set at intervals of the preset film roll length can still leave part of the marking codes on the punched tabs even after the tabs in the tab area are punched through die-cutting, for subsequent use when binding and obtaining target detection data through a code reader for identification.

[0126] In this application, by making the preset film roll length less than the preset tab length, after the tabs are cut out in the tab area through die-cutting, the marking codes can still be effectively retained on the cut tabs, so as to ensure the normal operation of the judgment of target detection data and the corresponding scrapping process during the subsequent winding process, further improve the accuracy of scrapping, reduce the possibility of defective products flowing out, and increase the yield of the battery cells formed by the electrode sheets.

[0127] According to some embodiments of the present application, the processing method further includes: After winding the film roll corresponding to the target marker code to form an electrode core, in response to all winding data being normal, bind the target marker code and the winding data.

[0128] Set an electrode core information code on the electrode core, and bind all the target detection data to the electrode core information code respectively.

[0129] The electrode core information code can specifically be a code set on the surface of the electrode core after the electrode core is formed, and can specifically be a two-dimensional code or a bar code or other types of codes.

[0130] In the present application, by also acquiring the corresponding detection data in the winding process stage, and when it is determined that the winding data is normal, binding it to the target marker code, and after the electrode core is formed, binding all the target detection data corresponding to the target marker codes in the electrode core to the electrode core information code for subsequent information traceability, the reliability of the electrode core is improved.

[0131] According to some embodiments of the present application, the processing method further includes: After winding the film roll corresponding to the target marker code to form an electrode core, in response to the winding data being abnormal, scrap the electrode core.

[0132] In the present application, by also acquiring the corresponding detection data in the winding process stage, and when it is determined that the winding data is abnormal, scrapping the electrode core with defects generated by the winding process, the possibility of defective products flowing out can be reduced, and the yield rate of the electrode cores formed by the pole pieces is improved.

[0133] The present application provides a pole piece processing device, as Figure 7 shown, Figure 7 is a schematic structural diagram of an embodiment of the pole piece processing device provided by the present application. The pole piece processing device 5 includes: an inkjet printing device 51 and a pole piece preparation device 52.

[0134] The inkjet printing device 51 can specifically include but is not limited to the inkjet printing mechanism described in the previous embodiments.

[0135] The pole piece preparation device 52 can specifically include but is not limited to the coating mechanism, cold pressing mechanism, die cutting mechanism, winding mechanism and processor described in the previous embodiments.

[0136] The inkjet printing device 51 is used to sequentially and at intervals set a plurality of marker codes on the pole piece film roll. Among them, one of the plurality of marker codes is used as the target marker code.

[0137] The pole piece preparation device 52 is used for: Bind the target marker code to the target detection data corresponding to the target marker code. Among them, the target detection data is the detection data of the film roll corresponding to the target marker code in the pole piece film roll.

[0138] During the winding process of the film roll corresponding to the target marker code, in response to abnormal target detection data, the film roll corresponding to the target marker code is scrapped.

[0139] The inkjet printing device 51 or the pole piece preparation device 52 can also execute the steps described in any of the previous embodiments, which will not be elaborated here.

[0140] In this application, in the preparation process of the pole piece, a plurality of marker codes are sequentially and spacedly arranged on the pole piece film roll. After obtaining the target detection data of the film roll corresponding to the target marker code in the pole piece film roll, the target marker code is bound to the target detection data. Subsequently, when winding the pole piece, the film roll with abnormal target detection data can be scrapped. It can realize automatic defect detection of the pole piece film roll and automatic scrapping of the pole piece film roll based on the setting of the marker code, the binding of the target detection data and the target marker code, and the scrapping of the film roll with abnormal target detection data during the winding process, without the need for manual labeling of abnormal film rolls, reducing the possibility that defective products are not accurately and effectively scrapped due to inaccurate manual operation and easy self-dropping of labels, thereby improving the accuracy of scrapping, reducing the possibility of defective products flowing out, and improving the yield rate of the battery cells formed by the pole pieces.

[0141] The descriptions of the above embodiments tend to emphasize the differences between the embodiments. Their similarities or similarities can be referred to each other. For the sake of brevity, they will not be elaborated here.

[0142] In several embodiments provided by this application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device implementation manners described above are only illustrative. For example, the division of modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of devices or units can be in electrical, mechanical or other forms.

[0143] In addition, each functional unit in each embodiment of this application can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated units can be implemented in the form of hardware or in the form of software functional units.

[0144] When the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods in various embodiments of this application. The aforementioned storage medium includes: various media that can store program codes, such as USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs.

[0145] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this application, rather than to limit them; although this 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 recorded 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 various embodiments of this application, and they should all be covered by the scope of the claims and the description of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. This 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 processing a pole piece, characterized in that, Applied to a pole piece processing device, the processing method includes: Sequentially and at intervals, a plurality of marking codes are set on a pole piece film roll; wherein, one of the plurality of marking codes is used as a target marking code; Binding the target marking code and target detection data corresponding to the target marking code; wherein, the target detection data is the detection data of the film roll corresponding to the target marking code in the pole piece film roll; During the die-cutting process of the film roll corresponding to the target marking code, in response to the abnormality of the target detection data, skipping the film roll corresponding to the target marking code; During the winding process of the film roll corresponding to the target marking code, in response to the abnormality of the target detection data, scrapping the film roll corresponding to the target marking code.

2. The processing method according to claim 1, wherein The target detection data includes first target detection data or second target detection data; The processing method further includes: During the die-cutting process of the film roll corresponding to the target marking code, identifying the target marking code and obtaining first target detection data corresponding to the target marking code, where the first target detection data includes coating data and cold pressing data; During the winding process of the film roll corresponding to the target marking code, identifying the target marking code and obtaining second target detection data corresponding to the target marking code, where the second target detection data includes coating data, cold pressing data, and die-cutting data.

3. The processing method according to claim 2, characterized in that The step of, during the die-cutting process of the film roll corresponding to the target marking code, in response to the abnormality of the target detection data, skipping the film roll corresponding to the target marking code, includes: During the die-cutting process of the film roll corresponding to the target marking code, in response to the abnormality of at least one of the detection data in the first target detection data, skipping the film roll corresponding to the target marking code.

4. The processing method according to claim 2, characterized in that, The step of, during the winding process of the film roll corresponding to the target marking code, in response to the abnormality of the target detection data, scrapping the film roll corresponding to the target marking code, includes: During the winding process of the film roll corresponding to the target marking code, in response to the abnormality of at least one of the detection data in the second target detection data, scrapping the film roll corresponding to the target marking code.

5. The processing method according to any one of claims 1 to 4, characterized in that, The step of sequentially and at intervals setting a plurality of marking codes on the pole piece film roll includes: On the pole piece film roll that has undergone coating treatment, sequentially and at intervals setting a plurality of marking codes; The step of binding the target marking code and target detection data corresponding to the target marking code includes: Binding the target detection data respectively obtained from the coating treatment and the subsequent treatment of the pole piece film roll after the coating treatment to the target marking code.

6. The processing method according to claim 5, wherein The target detection data includes at least one of coating data, cold pressing data, and die-cutting data; The step of binding the target detection data respectively obtained from the coating treatment and the subsequent treatment of the pole piece film roll after the coating treatment to the target marking code includes: After coating treatment and setting of the target marking code for the film roll corresponding to the target marking code, bind the target marking code and the coating data; and / or, After cold pressing treatment of the film roll corresponding to the target marking code, bind the target marking code and the detection data corresponding to the cold pressing treatment; and / or, After die cutting treatment of the film roll corresponding to the target marking code, bind the target marking code and the detection data corresponding to the die cutting treatment.

7. The processing method according to claim 6, wherein The coating data includes at least one of coating position, coating weight, coating speed, drying temperature, drying air frequency, and coating viscosity; and / or, The cold pressing data includes at least one of cold pressing thickness, cold pressing pressure, cold pressing speed, and pole piece tension; and / or, The detection data corresponding to the die cutting treatment includes at least one of die cutting width, die cutting pole piece image, die cutting power, die cutting frequency, and die cutting pulse width.

8. The processing method according to any one of claims 1 to 4, characterized in that The marking code is located in the insulating layer area or the tab area of the pole piece film roll.

9. The processing method according to any one of claims 1 to 4, characterized in that, Sequentially and at intervals, setting multiple marking codes on the pole piece film roll includes: On the pole piece film roll, set the marking codes in sequence at intervals of a preset film roll length; When the marking code is located in the tab area of the pole piece film roll, the preset film roll length is less than the preset tab length.

10. The processing method according to any one of claims 1 to 4, characterized in that, The processing method further includes: After winding the film roll corresponding to the target marking code to form an electric core, in response to all the detection data corresponding to the winding treatment being normal, bind the target marking code and the detection data corresponding to the winding treatment; Set an electric core information code on the electric core, and bind all the target detection data to the electric core information code respectively.

11. The processing method according to any one of claims 1 to 4, characterized in that, The processing method further includes: After winding the film roll corresponding to the target marking code to form an electric core, in response to the detection data corresponding to the winding treatment being abnormal, scrap the electric core.

12. A pole piece processing device, characterized in that, Including: An inkjet coding device for sequentially and at intervals setting multiple marking codes on the pole piece film roll; wherein, one of the multiple marking codes is used as the target marking code; A pole piece preparation device for: Binding the target marking code and the target detection data corresponding to the target marking code; wherein, the target detection data is the detection data of the film roll corresponding to the target marking code in the pole piece film roll; During the die cutting treatment of the film roll corresponding to the target marking code, in response to the target detection data being abnormal, perform a skip treatment on the film roll corresponding to the target marking code; During the winding treatment of the film roll corresponding to the target marking code, in response to the target detection data being abnormal, perform a scrap treatment on the film roll corresponding to the target marking code.

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