Electrode sheet material roll matching method and system

Abstract

An electrode sheet material roll matching method and system. The electrode sheet material roll matching method comprises: acquiring first material parameter information of a first material roll, winding machine identifiers of candidate winding machines, and second material parameter information of second material rolls on the candidate winding machines; and on the basis of the first material parameter information and the second material parameter information, determining from among the candidate winding machines a target winding machine matching the first material roll, so as to load the first material roll onto the target winding machine. The electrode sheet material roll matching method and system can avoid the quality problem of a battery cell caused by improper matching between a material roll and a winding machine.

Description

Electrode roll matching method and system

[0001] Cross-references to related applications

[0002] This application claims priority to Chinese Patent Application No. 202510356772.7, filed on March 25, 2025, entitled “Method and System for Matching Electrode Rolls”, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This application relates to the field of battery manufacturing technology, and in particular to a method and system for matching electrode rolls. Background Technology

[0004] In the battery manufacturing process, the winding process involves winding the anode and cathode material rolls to obtain bare cells.

[0005] In related technologies, after the material coils leave the vertical storage unit, production relies on the individual judgment of the personnel pulling the coils. These personnel typically load the coils randomly onto a winding machine for production. This randomness can have several adverse effects. For example, due to the randomness of loading, it is difficult to guarantee that each winding machine can use a matching coil, affecting the quality and yield of the bare cells. Summary of the Invention

[0006] This application provides a method and system for matching sheet rolls with electrode rolls, which can avoid cell quality problems caused by improper matching of the sheet rolls and the winding machine.

[0007] In a first aspect, this application provides a method for matching sheet rolls with electrode rolls, comprising: acquiring first material parameter information of a first roll, a winding machine identifier of a candidate winding machine, and second material parameter information of a second roll on a candidate winding machine; and determining a target winding machine that matches the first roll from among the candidate winding machines based on the first material parameter information and the second material parameter information.

[0008] According to the electrode roll matching method provided in the embodiments of this application, based on the first material parameter information of the first roll and the second material parameter information of the second roll on the candidate winding machine, a target winding machine matching the first roll is determined from the candidate winding machines so as to load the first roll onto the target winding machine that matches it. Compared with randomly loading the roll, the electrode roll matching method of the embodiments of this application matches a suitable target winding machine for the first roll based on the material parameter information, which can avoid the bare cell quality problem caused by improper matching of the roll and the winding machine and improve the yield of the bare cell.

[0009] In some embodiments, determining a target winding machine matching the first roll from the candidate winding machines based on the first material parameter information and the second material parameter information includes:

[0010] Based on the first material parameter information and the second material parameter information, determine the matching degree between the second roll and the first roll on each of the candidate winding machines;

[0011] Candidate winding machines that meet the preset matching conditions are selected as target winding machines that match the first roll.

[0012] In this embodiment, the matching degree corresponding to each candidate winding machine is determined, and matching is performed based on the matching degree and preset matching conditions to obtain the target winding machine that matches the first roll, which can improve the matching accuracy.

[0013] In some embodiments, the first roll and the second roll have opposite polarities, the first material parameter information includes a first film width, and the second material parameter information includes a second film width. The step of determining the matching degree between the second roll and the first roll on each of the candidate winding machines based on the first material parameter information and the second material parameter information, and selecting candidate winding machines whose matching degree meets preset matching conditions as target winding machines matching the first roll, includes:

[0014] Calculate the first difference between the first film width and the second film width of the second roll on each of the candidate winding machines;

[0015] Calculate the deviation between each of the first differences and the first preset target threshold;

[0016] Based on the aforementioned deviations, a target winding machine that matches the first roll is determined.

[0017] In this embodiment, the deviation can represent the matching degree between the first roll and the second roll. Based on the deviation corresponding to each candidate winding machine, the target winding machine that matches the first roll can be determined, which can improve the matching accuracy and thus ensure the OH yield of the bare cells produced by the winding machine.

[0018] In some embodiments, determining the target winding machine that matches the first roll according to each of the deviations includes:

[0019] The candidate winding machine corresponding to the deviation with the smallest absolute value among the multiple deviations is selected as the target winding machine to match the first roll.

[0020] In this embodiment, the candidate winding machine corresponding to the smallest absolute deviation is selected as the target winding machine to match the first roll. In other words, the candidate winding machine that best matches the first roll is selected as the target winding machine, which can ensure that the target winding machine and the first roll are the most matched and better optimize the OH of the produced bare cells.

[0021] In some embodiments, determining the target winding machine that matches the first roll according to each of the deviations includes:

[0022] The candidate winding machines are sorted in ascending order of the absolute values ​​of the deviations to obtain a candidate winding machine sequence.

[0023] Select a candidate winding machine located at the first preset number position from the candidate winding machine sequence to obtain a target winding machine that matches the first roll.

[0024] In this embodiment, the deviations are sorted to obtain a candidate winding machine sequence. The candidate winding machine that ranks higher in the candidate winding machine sequence has a higher degree of matching with the first material roll. The candidate winding machine located at the first preset number position in the candidate winding machine sequence is selected to obtain the target winding machine that matches the first material roll. The method of determining the target winding machine is more flexible and can facilitate the selection of the target winding machine that is closest to the current position of the first material roll for feeding, thereby improving production efficiency.

[0025] In some embodiments, the first roll and the second roll have the same polarity, the first material parameter information includes a first film width, and the second material parameter information includes a second film width. The step of determining the matching degree between the second roll and the first roll on each of the candidate winding machines based on the first material parameter information and the second material parameter information, and selecting the candidate winding machines whose matching degree meets preset matching conditions as target winding machines matching the first roll, includes:

[0026] Calculate the second difference between the first film width and the second film width of the second roll on each of the candidate winding machines;

[0027] The candidate winding machine corresponding to the difference that is less than the second preset target threshold is taken as the target winding machine that matches the first material roll.

[0028] In this embodiment, the candidate winding machine corresponding to the second difference whose absolute value is less than the second preset target threshold is used as the target winding machine to match the first roll, which can ensure that the film width consistency of the first roll and the second roll on the target winding machine meets the requirements.

[0029] In some embodiments, the first material parameter information includes a first film width, and the second material parameter information includes a second film width. The step of determining a target winding machine matching the first roll from the candidate winding machines based on the first material parameter information and the second material parameter information includes:

[0030] From multiple first membrane width intervals, determine the first target membrane width interval to which the first membrane width belongs;

[0031] From a plurality of second membrane width intervals, a second target membrane width interval corresponding to the first target membrane width interval is determined, and the plurality of first membrane width intervals and the plurality of second membrane width intervals correspond one-to-one, and the membrane width difference between the corresponding first membrane width intervals and the second membrane width intervals is within a preset difference range;

[0032] From the candidate winding machines corresponding to the second film width within the second target film width range, a target winding machine that matches the first roll is determined.

[0033] In this embodiment, during the matching process, it is not necessary to match the first roll with any candidate winding machine. Instead, the matching range is narrowed down to the candidate winding machines whose second film width belongs to the second target film width range, which can improve the matching efficiency.

[0034] In some embodiments, obtaining the first material parameter information of the first roll includes:

[0035] Obtain the first identification information of the first material roll;

[0036] Based on the correspondence between the identifier and the membrane width, the first membrane width corresponding to the first identifier information is determined. The correspondence between the identifier and the membrane width includes the correspondence between multiple identifier information and multiple membrane widths.

[0037] In this embodiment, the first film width of the first roll can be accurately obtained through the first identification information of the first roll and the pre-stored film width information, thereby ensuring the accuracy of the matching result.

[0038] In some embodiments, before determining the first film width corresponding to the first material identification information based on the correspondence between the identifier and the film width, the method further includes:

[0039] Obtain production information from each die-cutting machine, including identification information and film width corresponding to multiple rolls;

[0040] Store the identification information and the correspondence between the identification and film width of the multiple rolls respectively.

[0041] In this embodiment, the film width of the roll is obtained and stored directly based on the production information of the die-cutting machine in conjunction with the die-cutting machine, so as to ensure that effective and accurate film width data can be obtained.

[0042] In some embodiments, the production information includes multiple film widths corresponding to multiple location points on the roll; storing the identification information and film widths corresponding to the multiple rolls into film width information includes:

[0043] For at least one roll, calculate the mean or median of the film width corresponding to multiple film widths at multiple locations on the roll, and store the identification information corresponding to the roll and the mean or median of the film width in the film width information.

[0044] In this embodiment, the mean or median film width can more accurately characterize the film width of the roll, thereby ensuring the accuracy of subsequent matching.

[0045] In some embodiments, obtaining the winding machine identifier of the candidate winding machine and the second material parameter information of the second roll on the candidate winding machine includes:

[0046] Obtain the winding machine identifier and material status of each of the multiple winding machines;

[0047] The winding machine whose material status is missing the first roll is identified as a candidate winding machine;

[0048] Obtain the winding machine identifier of the candidate winding machine and the second material parameter information of the second roll on the candidate winding machine.

[0049] In this embodiment, identifying the winding machine lacking material as a candidate winding machine can narrow down the matching range and improve production efficiency.

[0050] In some embodiments, after determining the winding machine whose material status is lacking the first roll as a candidate winding machine, the method further includes:

[0051] Store the winder identifier corresponding to the candidate winder in the first roll material shortage information;

[0052] After determining a target winding machine matching the first roll from the candidate winding machines based on the first material parameter information and the second material parameter information, the method further includes:

[0053] Remove the winding machine identifier of the target winding machine from the material shortage information of the first coil.

[0054] In this embodiment, after the target winding machine is determined, the first roll is fed onto the target winding machine. Once the target winding machine has no shortage of rolls, the winding machine identifier of the target winding machine is removed from the shortage list to avoid the winding machine that has already been matched being matched repeatedly.

[0055] In some embodiments, after determining a target winding machine matching the first roll from the candidate winding machines based on the first material parameter information and the second material parameter information, the method further includes:

[0056] The location information of the target winding machine and the equipment identification information are sent to the material roll identification acquisition device.

[0057] In this embodiment, the material roll identification acquisition device displays the location information of the target winding machine and the equipment identification information to prompt the material handling personnel to load the material. The material handling personnel can obtain the information of the target winding machine displayed on the device based on the material roll identification and directly transport the first material roll to the target winding machine, which can improve the matching accuracy and production efficiency.

[0058] Based on the same technical concept, in a second aspect, embodiments of this application provide an electrode roll matching system, including:

[0059] The material roll identification acquisition device is used to acquire the first identification information of the first material roll and transmit the first identification information to the control system;

[0060] The control system is configured to acquire first material parameter information of the first roll based on first identification information, and acquire the winding machine identifier of the candidate winding machine and the second material parameter information of the second roll on the candidate winding machine; and determine the target winding machine that matches the first roll from the candidate winding machines according to the first material parameter information and the second material parameter information.

[0061] According to the electrode roll matching system provided in this application embodiment, the roll identification acquisition device acquires the first identification information of the first roll, the control system acquires the first material parameter information of the first roll based on the first identification information, and acquires the second material parameter information of the second roll on the candidate winding machine, and determines the target winding machine that matches the first roll from the candidate winding machines, so as to load the first roll onto the target winding machine that matches it; compared with randomly loading the roll, the electrode roll matching system of this application embodiment matches the first roll with a suitable target winding machine based on the material parameter information, which can avoid the bare cell quality problem caused by improper matching of the roll and the winding machine, and can improve the yield of the bare cell.

[0062] In some embodiments, the control system is further configured to send the location information of the target winding machine and the equipment identification information to the roll identification acquisition device;

[0063] The coil identification acquisition device is also used to display the location information and equipment identification information of the target winding machine.

[0064] The material roll identification acquisition device displays the location information and equipment identification information of the target winding machine to prompt the material handling personnel to load the material. The material handling personnel can obtain the information of the target winding machine displayed on the device based on the material roll identification and directly transport the first material roll to the target winding machine, which can improve matching accuracy and production efficiency.

[0065] In some embodiments, the system further includes:

[0066] The control system is also used to acquire production information of the die-cutting machine, the production information including the identification information and film width corresponding to the plurality of material rolls respectively, and to store the correspondence between the identification information and film width corresponding to the plurality of material rolls respectively.

[0067] In this embodiment, the intelligent control system is linked with the die-cutting machine to directly obtain and store the film width of the roll based on the production information of the die-cutting machine, so as to ensure that effective and accurate film width data can be obtained.

[0068] In some embodiments, the electrode roll matching system further includes: a warehouse management system that issues an outbound task for the first roll to the warehouse control system;

[0069] The warehouse control system controls the release of the first roll of material based on the outbound task;

[0070] The material roll identification acquisition device is specifically used to acquire the first identification information of the first material roll after it leaves the warehouse.

[0071] Electrode roll matching method Electrode roll matching method Electrode roll matching method The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it according to the contents of the specification, and in order to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0072] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0073] Figure 1 is one of the schematic diagrams of the electrode roll matching method provided in the embodiments of this application;

[0074] Figure 2 is a second schematic diagram of the electrode roll matching method provided in the embodiments of this application;

[0075] Figure 3 is a third schematic diagram of the electrode roll matching method provided in the embodiments of this application;

[0076] Figure 4 is a schematic diagram of the electrode roll matching method provided in the embodiments of this application;

[0077] Figure 5 is a schematic diagram of the electrode roll matching method provided in the embodiments of this application;

[0078] Figure 6 is a schematic diagram of the electrode roll matching method provided in the embodiments of this application;

[0079] Figure 7 is the seventh schematic diagram of the electrode roll matching method provided in the embodiments of this application;

[0080] Figure 8 is a schematic diagram of the electrode roll matching method provided in the embodiments of this application;

[0081] Figure 9 is a flowchart illustrating a specific scenario embodiment of the electrode roll matching method provided in this application.

[0082] Figure 10 is a schematic diagram of the electrode roll matching method provided in the embodiments of this application (the ninth one).

[0083] Figure 11 is a flowchart illustrating a specific scenario embodiment of the electrode roll matching method provided in this application.

[0084] Figure 12 is a flowchart illustrating a specific scenario embodiment of the electrode roll matching method provided in this application.

[0085] Figure 13 is one of the schematic diagrams of the electrode roll matching system provided in the embodiments of this application;

[0086] Figure 14 is a second schematic diagram of the electrode roll matching system provided in the embodiments of this application. Detailed Implementation

[0087] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0088] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0089] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0090] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0091] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0092] Unless otherwise specified, all steps of this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order; for example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0093] In related technologies, the loading of battery coils relies on random human judgment. Specifically, after the coils leave the vertical storage silo, the loading depends on the individual judgment of the personnel pulling the coils. These personnel typically load the coils randomly onto a winding machine for production. This randomness can have some adverse effects. For example, due to the randomness of loading, it is difficult to guarantee that each winding machine can use a matching coil for production, affecting the quality and yield of the bare battery cells.

[0094] Therefore, ensuring the quality and yield of bare battery cells produced by winding machines is a problem that needs to be optimized.

[0095] Based on this, embodiments of this application provide an electrode roll matching method and a electrode roll matching system to solve the aforementioned technical problems. The electrode roll matching method provided in this application embodiment will be introduced first below.

[0096] As shown in Figure 1, the electrode roll matching method provided in this embodiment includes steps S101 to S102. This electrode roll matching method can be applied to a control system.

[0097] S101, obtain the first material parameter information of the first coil, the winding machine identifier of the candidate winding machine, and the second material parameter information of the second coil on the candidate winding machine.

[0098] In S101, the first roll can be a roll dispensed from the vertical silo. The cell manufacturing process may include steps such as mixing, coating, rolling, die-cutting, and winding. After die-cutting, anode and cathode rolls are obtained, and the die-cut rolls are stored in the vertical silo. Then, the rolls are dispensed from the vertical silo and loaded onto a winding machine. The winding machine winds the anode roll, cathode roll, and separator to obtain a bare cell. It should be noted that in this article, "roll" refers to electrode rolls.

[0099] For example, each roll includes a roll identifier. After the first roll leaves the warehouse, the control system obtains the roll identifier of the first roll and obtains the first material parameter information of the first roll based on the roll identifier. The roll identifier is unique, and different rolls have different roll identifiers.

[0100] For example, a winding production line includes multiple winding machines, each with a unique identifier. The winding machine identifier is unique; different winding machines have different identifiers. A candidate winding machine can be any winding machine on the winding production line. The control system can acquire information on all winding machines on the winding production line and select at least a subset of them as candidate winding machines.

[0101] The candidate winding machine includes a second roll. The first and second rolls have different polarities; one of them is an anode roll, and the other is a cathode roll. Alternatively, the first and second rolls have the same polarity; both the first and second rolls can be anode rolls or both can be cathode rolls.

[0102] The first material parameter information and the second material parameter information refer to information of the same category. For example, the first material parameter information refers to the film width information of the first roll, and the second material parameter information refers to the film width information of the second roll. As another example, the first material parameter information refers to the film thickness information of the first roll, and the second material parameter information refers to the film thickness information of the second roll.

[0103] The feed roll includes a body and tabs. Taking an anode feed roll as an example, the anode feed roll includes an anode body and anode tabs. At least a portion of the anode body is provided with an anode film layer, and the width of the portion of the anode film layer located on the anode body is the film width of the anode feed roll. The sum of the thicknesses of the anode film layer and the anode body is the film thickness of the anode feed roll. The film width and film thickness of the cathode feed roll are similar.

[0104] S102, based on the first material parameter information and the second material parameter information, determine the target winding machine that matches the first roll from the candidate winding machines.

[0105] After determining the target winding machine that matches the first roll, control the first roll to be fed to the target winding machine.

[0106] In S102, in one example, when the first material parameter information refers to the film width information of the first roll and the second material parameter information refers to the film width information of the second roll, a target winding machine matching the first roll can be determined from the candidate winding machines based on the film width of the first roll and the film width of the second roll, as well as the preset film width matching rules. This ensures that the first roll and the second roll on the target winding machine have a good width difference (overhang, OH), thereby preventing lithium dendrite precipitation, ensuring the safety and stability of the bare cells produced by the target winding machine, and improving the quality and yield of the bare cells.

[0107] In another example, where the first material parameter information refers to the film thickness information of the first roll and the second material parameter information refers to the film thickness information of the second roll, a target winding machine that matches the first roll can be determined from the candidate winding machines based on the film thickness of the first roll and the film thickness of the second roll, as well as the preset film thickness matching rules. This ensures that the thickness of the first roll and the second roll on the target winding machine can meet the matching requirements, thereby avoiding misalignment of the bare cell tabs due to the non-compliance of the roll thickness.

[0108] According to the electrode roll matching method provided in this application embodiment, based on the first material parameter information of the first roll and the second material parameter information of the second roll on the candidate winding machine, a target winding machine matching the first roll is determined from the candidate winding machines, so that the first roll is loaded onto the target winding machine that matches it. Compared with randomly loading the roll, the electrode roll matching method of this application embodiment matches a suitable target winding machine for the first roll based on the material parameter information, which can avoid the bare cell quality problem caused by improper matching of the roll and the winding machine, and can improve the yield of the bare cell.

[0109] In related technologies, material handlers randomly load coils onto a winding machine for production. To ensure the yield rate of the winding machine and avoid defective bare cells due to improper random matching, material coils are deliberately produced beyond specifications in the preceding process of winding. However, producing beyond specifications results in material waste and increases production costs.

[0110] The electrode roll matching method of this application matches a suitable target winding machine for the first roll based on the material parameter information. In this way, there is no need to deliberately produce rolls of higher specifications in the previous process, which can save material resources of the roll.

[0111] In some embodiments, as shown in FIG2, determining a target winding machine that matches the first roll from candidate winding machines based on first material parameter information and second material parameter information includes:

[0112] S201, Based on the first material parameter information and the second material parameter information, determine the matching degree between the second roll and the first roll on each candidate winding machine;

[0113] S202, select the candidate winding machine whose matching degree meets the preset matching conditions as the target winding machine to match the first roll.

[0114] For example, there may be multiple candidate winding machines, and the matching degree between the second roll and the first roll on each candidate winding machine is determined according to the first material parameter and the second material parameter of each candidate winding machine.

[0115] The matching degree indicates the degree of matching between the first roll and the second roll on the candidate winding machine. Matching conditions are preset and stored in the control system. The control system calculates the matching degree corresponding to each candidate winding machine and selects the candidate winding machine whose matching degree meets the preset matching conditions as the target winding machine to match the first roll.

[0116] In this embodiment, the matching degree corresponding to each candidate winding machine is determined, and matching is performed based on the matching degree and preset matching conditions to obtain the target winding machine that matches the first roll, which can improve the matching accuracy.

[0117] During the winding process, if the OH groups of the wound anode and cathode coils are not properly matched, it will affect the safety and stability of the resulting bare battery cell. Therefore, ensuring good OH group matching between the matched anode and cathode coils is crucial.

[0118] In some embodiments, the first roll and the second roll have opposite polarities. The first material parameter information includes a first film width, and the second material parameter information includes a second film width, as shown in Figure 3. Based on the first material parameter information and the second material parameter information, the matching degree between the second roll and the first roll on each candidate winding machine is determined. The candidate winding machine whose matching degree meets the preset matching conditions is selected as the target winding machine for matching the first roll, including:

[0119] S301, Calculate the first difference between the first film width and the second film width of the second roll on each candidate winding machine;

[0120] S302, calculate the deviation between each first difference and the first preset target threshold;

[0121] S303, determine the target winding machine that matches the first roll according to each deviation.

[0122] For example, the first and second rolls have opposite polarities, with one being an anode roll and the other a cathode roll. It is understood that the film width of the anode roll is greater than the film width of the cathode roll. The first difference in S301 is the difference between the film width of the anode roll and the film width of the cathode roll, and this first difference is a positive number.

[0123] For example, when the first roll is an anode roll and the second roll is a cathode roll, for any candidate winding machine, the calculation of the first difference between the first film width and the second film width of the second roll on each candidate winding machine includes:

[0124] Subtract the first film width of the first roll from the second film width of the second roll on the candidate winding machine to obtain the first difference value corresponding to the candidate winding machine.

[0125] For example, when the first roll is a cathode roll and the second roll is an anode roll, for any candidate winding machine, the calculation of the first difference between the first film width and the second film width of the second roll on each candidate winding machine includes:

[0126] Subtract the first film width of the first film width from the second film width of the second roll on the candidate winding machine to obtain the first difference value corresponding to the candidate winding machine.

[0127] For example, a first preset target threshold can be set according to actual needs and stored in the control system.

[0128] For example, calculating the deviation between each first difference and the first preset target threshold includes: subtracting each first difference from the first preset target threshold to obtain the deviation.

[0129] The deviation is used to represent how close the first difference between the first roll and the second roll is to a first preset target threshold; in other words, the deviation represents the degree of matching between the first roll and the second roll. The smaller the absolute value of the deviation, the closer the difference corresponding to that deviation is to the first preset target threshold, and the higher the degree of matching between the first roll and the second roll corresponding to that deviation. Conversely, the larger the absolute value of the deviation, the less close the difference corresponding to that deviation is to the first preset target threshold, and the lower the degree of matching between the first roll and the second roll corresponding to that deviation.

[0130] In this embodiment, the deviation can represent the matching degree between the first roll and the second roll. Based on the deviation corresponding to each candidate winding machine, the target winding machine that matches the first roll can be determined, which can improve the matching accuracy and thus ensure the OH yield of the bare cells produced by the winding machine.

[0131] In some embodiments, as shown in FIG4, determining a target winding machine to match the first roll according to various deviations includes:

[0132] S401, select the candidate winding machine corresponding to the deviation with the smallest absolute value among multiple deviations as the target winding machine to match the first roll.

[0133] The smallest absolute value of the deviation corresponds to the difference that is closest to the first preset target threshold, and the highest degree of matching between the first and second material rolls corresponds to this deviation.

[0134] Among multiple deviations, there may be deviations with equal absolute values. For example, there may be multiple deviations with the smallest absolute value. In this case, the candidate winding machines corresponding to these multiple deviations are all used as target winding machines to match the first coil. Alternatively, there may be only one deviation with the smallest absolute value. In this case, the candidate winding machine corresponding to this one deviation is used as the target winding machine to match the first coil.

[0135] In this embodiment, the candidate winding machine corresponding to the smallest absolute deviation is selected as the target winding machine to match the first roll. In other words, the candidate winding machine that best matches the first roll is selected as the target winding machine, which can ensure that the target winding machine and the first roll are the most matched and better optimize the OH of the produced bare cells.

[0136] In other embodiments, as shown in FIG5, determining the target winding machine to match the first roll according to various deviations includes:

[0137] S501, sort the multiple candidate winding machines in ascending order of the absolute value of each deviation to obtain a candidate winding machine sequence;

[0138] S502, Select the candidate winding machine located at the first preset number position in the candidate winding machine sequence to obtain the target winding machine that matches the first roll.

[0139] For example, given 10 candidate winding machines, the absolute values ​​of the 10 deviations corresponding to these 10 candidate winding machines are 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10, respectively. The candidate winding machine with an absolute deviation value of 1 is located first in the candidate winding machine sequence, the candidate winding machine with an absolute deviation value of 2 is located second, the candidate winding machine with an absolute deviation value of 3 is located third, and so on, with the candidate winding machine with an absolute deviation value of 10 located tenth. It is understandable that the earlier a candidate winding machine appears in the sequence, the better its match with the first coil.

[0140] The preset quantity can be set as needed. For example, the top three candidate winding machines in the candidate winding machine sequence can be selected as the target winding machines to match the first coil. That is, the first, second, and third candidate winding machines in the candidate winding machine sequence can be selected as the target winding machines to match the first coil. If the preset quantity is greater than 1, the number of target winding machines is greater than 1, and the first coil can be loaded onto any one of the multiple target winding machines. For example, the target winding machine closest to the current position of the first coil can be selected from the multiple target winding machines, and the first coil can be transported to the target winding machine closest to that position for loading, thereby improving production efficiency.

[0141] In this embodiment, the deviations are sorted to obtain a candidate winding machine sequence. The candidate winding machine that ranks higher in the candidate winding machine sequence has a higher degree of matching with the first material roll. The candidate winding machine located at the first preset number position in the candidate winding machine sequence is selected to obtain the target winding machine that matches the first material roll. The method of determining the target winding machine is more flexible and can facilitate the selection of the target winding machine that is closest to the current position of the first material roll for feeding, thereby improving production efficiency.

[0142] Figures 3 to 5 illustrate examples of matching schemes when the first and second rolls have opposite polarities. In other embodiments, the first and second rolls may have the same polarity. The first material parameter information includes a first film width, and the second material parameter information includes a second film width. As shown in Figure 6, based on the first and second material parameter information, the matching degree between the second roll and the first roll on each candidate winding machine is determined. The candidate winding machine whose matching degree meets the preset matching conditions is selected as the target winding machine for matching the first roll, including:

[0143] S601, calculate the second difference between the first film width and the second film width of the second roll on each candidate winding machine;

[0144] S602, the candidate winding machine corresponding to the second difference whose absolute value is less than the second preset target threshold is selected as the target winding machine to match the first roll.

[0145] For example, both the first roll and the second roll are anode rolls, or both the first roll and the second roll are cathode rolls.

[0146] For any candidate winding machine, the calculation of the second difference between the first film width and the second film width of the second roll on each candidate winding machine includes:

[0147] Subtract the second film width of the second roll on the candidate winding machine from the first film width of the first roll to obtain the second difference value corresponding to the candidate winding machine.

[0148] When the first film width is greater than the second film width, the second difference is greater than 0. When the first film width is less than the second film width, the second difference is less than 0. When the first film width is equal to the second film width, the second difference is equal to 0. The smaller the absolute value of the second difference, the closer the film widths of the first and second rolls are, that is, the better the consistency of the film widths of the first and second rolls.

[0149] For example, a second preset target threshold can be set and stored in the control system according to actual needs. The second preset target threshold can be used to represent the maximum value of the film width difference between two rolls with the same polarity, or in other words, the second preset target threshold can be used to represent the upper limit of the film width difference between two rolls with the same polarity. If the absolute value of the film width difference between two rolls with the same polarity is greater than or equal to the second preset target threshold, it indicates that the two rolls do not meet the matching requirements. If the film width difference between two rolls with the same polarity is less than or equal to the second preset target threshold, it indicates that the two rolls meet the matching requirements.

[0150] In this embodiment, the candidate winding machine corresponding to the second difference whose absolute value is less than the second preset target threshold is used as the target winding machine to match the first roll, which can ensure that the film width consistency of the first roll and the second roll on the target winding machine meets the requirements.

[0151] In some embodiments, the first material parameter information includes a first film width, and the second material parameter information includes a second film width. Based on the first material parameter information and the second material parameter information, as shown in FIG7, determining a target winding machine matching the first roll from candidate winding machines includes:

[0152] S701, determine the first target membrane width interval to which the first membrane width belongs from multiple first membrane width intervals;

[0153] S702, from multiple second membrane width intervals, determine the second target membrane width interval corresponding to the first target membrane width interval, and the multiple first membrane width intervals and multiple second membrane width intervals correspond one-to-one, and the membrane width difference between the corresponding first membrane width intervals and second membrane width intervals is within a preset difference range.

[0154] S703, determine the target winding machine that matches the first roll from the candidate winding machines corresponding to the second film width within the second target film width range.

[0155] For example, multiple first film width intervals can be pre-defined based on experience, or multiple first film width intervals can be pre-defined based on the minimum and maximum film width values ​​of multiple rolls obtained after die-cutting by the die-cutting machine. Different first film width intervals correspond to different film width ranges. Pre-defining multiple first film width intervals is equivalent to dividing the film width of the first roll to be wound into grades.

[0156] For example, multiple second film width intervals can be pre-defined based on experience, or based on the minimum and maximum film widths of the multiple rolls obtained after die-cutting by the die-cutting machine. Different second film width intervals correspond to different film width ranges. Pre-defining multiple second film width intervals is equivalent to grading the film width of the second rolls on the winding machine.

[0157] For example, n first film width intervals and n second film width intervals are pre-defined, namely, first film width intervals n_11, n_12 to n_1n and second film width intervals n_21, n_22 to n_2n, where n is greater than 1. The first film width intervals n_11 and n_21 correspond, and the difference in film width between them is within a preset difference range; similarly, the first film width intervals n_12 and n_22 correspond, and the difference in film width between them is within a preset difference range; and so on, the first film width intervals n_1n and n_2n correspond, and the difference in film width between them is within a preset difference range. For example, the first and second rolls are rolls with opposite polarities, and the preset difference range is a preset OH range.

[0158] If the first film width of the first roll falls within the first film width interval n_12, then the first film width interval n_12 is the first target film width interval corresponding to the first roll. The first film width interval n_12 corresponds to the second film width interval n_22, and the second film width interval n_22 is the second target film width interval. For example, if the second film width of the second roll on m candidate winding machines falls within the second film width interval n_22, then a target winding machine matching the first roll is determined from these m candidate winding machines.

[0159] In this embodiment, multiple first film width intervals and multiple second film width intervals are pre-set in a one-to-one correspondence. The first target film width interval to which the first film width of the first roll belongs is determined, and then the second target film width interval corresponding to the first target film width interval is determined. The target winding machine is determined only from the candidate winding machines whose second film width of the second roll is within the second target film width interval. In this way, during the matching process, it is not necessary to match the first roll with any candidate winding machine. Instead, the matching range is narrowed to the candidate winding machines whose second film width belongs to the second target film width interval, which can improve the matching efficiency.

[0160] In some embodiments, as shown in FIG8, obtaining the first material parameter information of the first roll includes:

[0161] S801, Obtain the first identification information of the first material roll;

[0162] S802, determine the first membrane width corresponding to the first identification information according to the correspondence between the identification and the membrane width, the correspondence between the identification and the membrane width includes the correspondence between multiple identification information and multiple membrane widths.

[0163] For example, each roll of material is labeled with a roll identifier. After the first roll leaves the warehouse, the first identifier information of the first roll can be obtained by a roll identifier acquisition device, which then uploads the first identifier information to the control system. The control system pre-stores a correspondence between identifiers and film widths, and searches for the first film width corresponding to the first identifier information in the identifier-film width correspondence.

[0164] For example, the device for obtaining the roll identification includes, but is not limited to, a portable device assistant (PDA). The identification information of the roll includes, but is not limited to, the roll number or the die-cutting number.

[0165] For example, the membrane width information can be stored based on the correspondence between the identifier and the membrane width, as shown in Table 1.

[0166] Table 1

[0167] For example, the film width in Table 1 is represented by the average value of the film width of the roll, which is not intended to limit this application.

[0168] In this embodiment, the first film width of the first roll can be accurately obtained through the first identification information of the first roll and the pre-stored film width information, thereby ensuring the accuracy of the matching result.

[0169] For example, the types of material rolls include fabric roll A and fabric roll B, with different tab positions. Correspondingly, the winding machine includes a first winding machine for winding fabric roll A and a second winding machine for winding fabric roll B. After obtaining the first identification information of the first material roll, the type of the first material roll can be obtained based on pre-stored film width information. For example, if the first material roll is fabric roll A, a first candidate winding machine is determined from the first winding machines capable of winding fabric roll A, and a target winding machine is determined from the first candidate winding machines. As another example, if the first material roll is fabric roll B, a second candidate winding machine is determined from the second winding machines capable of winding fabric roll B, and a target winding machine is determined from the second candidate winding machines.

[0170] In some embodiments, before determining the first film width corresponding to the first material identification information based on the correspondence between the identifier and the film width, the electrode roll matching method provided in this application embodiment further includes:

[0171] Obtain production information from each die-cutting machine. The production information includes the identification information and film width corresponding to multiple rolls.

[0172] Store the identification information and the correspondence between the identification and film width of multiple rolls.

[0173] For example, the die-cutting machine includes a host computer, and a communication connection between the control system and the host computer of the die-cutting machine. The communication methods between the control system and the host computer of the die-cutting machine include, but are not limited to, Message Queuing Telemetry Transport (MQTT).

[0174] Compared to obtaining the film width of the roll from the Manufacturing Execution System (MES), which is manually entered and prone to errors, this embodiment directly obtains and stores the film width of the roll based on the production information of the die-cutting machine, in conjunction with the die-cutting machine, to ensure that effective and accurate film width data can be obtained.

[0175] In some specific scenario embodiments, as shown in Figure 9, the scenario embodiment may include:

[0176] S901, the host computer of the die-cutting machine uploads the production information of the die-cutting machine to the control system. The production information includes the identification information and film width corresponding to the multiple die-cut rolls.

[0177] S902, the control system stores the identification information and film width corresponding to each roll into the film width information table. The film width information table includes the information table shown in Table 1.

[0178] For example, the production information includes multiple film widths corresponding to multiple locations on the roll. Before S902, the method provided in this application embodiment further includes: the control system calculating the final film width corresponding to the roll based on the multiple film widths corresponding to the multiple locations on the roll. Correspondingly, S902 includes: storing the identification information corresponding to the roll and the final corresponding film width to a film width information table.

[0179] For example, the control system determines whether the identification information corresponding to the production information has changed. If it has changed, it executes S902; if it has not changed, it returns to execute S901. If the identification information corresponding to the production information has changed, it means that the die-cutting is complete and the die-cut roll is obtained. If the identification information corresponding to the production information has not changed, it means that the die-cutting is not yet complete.

[0180] For example, the method provided in this application embodiment further includes: storing the roll type of the production information in a film width information table. The roll type includes whether the roll is fabric roll A or fabric roll B.

[0181] For example, the method provided in this application further includes: calculating the process capability (cpk) of the die-cutting machine based on the production information of the die-cutting machine, and storing the process capability in a film width information table. The process capability of the die-cutting machine is used to represent the production stability of the die-cutting machine.

[0182] As an example, the production information of a die-cutting machine includes multiple film widths at multiple locations on the roll. Based on this production information, the process capability of the die-cutting machine is calculated, including:

[0183] Calculate the mean and standard deviation of the membrane width for multiple membrane widths;

[0184] Calculate the third difference between the preset upper limit value and the average membrane width;

[0185] Calculate the fourth difference between the average membrane width and the preset lower limit;

[0186] The ratio of the smaller of the third and fourth differences to the standard deviation is taken as the process capability of the die-cutting machine.

[0187] Of course, the process capability of the die-cutting machine can also be calculated using other methods.

[0188] In some embodiments, the production information of the die-cutting machine includes multiple film widths corresponding to multiple position points on the material roll; storing the identification information and film width corresponding to the multiple material rolls into the film width information includes:

[0189] For at least one roll, calculate the mean or median of the film width corresponding to multiple film widths at multiple locations on the roll to obtain the film width information of the roll.

[0190] For example, the production information of the die-cutting machine includes multiple film widths corresponding to more than 6,000 position points on the material roll. The upper and lower limits of the film width can be preset, and film widths outside the range defined by the upper and lower limits can be excluded. For multiple film widths within the range defined by the upper and lower limits, the mean or median of these film widths can be calculated, and the mean or median of the film width can be used as the final film width corresponding to the material roll.

[0191] In this embodiment, the mean or median film width can more accurately characterize the film width of the roll, thereby ensuring the accuracy of subsequent matching.

[0192] In some embodiments, as shown in FIG10, obtaining the winding machine identifier of the candidate winding machine and the second material parameter information of the second roll on the candidate winding machine includes:

[0193] S1001, Obtain the winding machine identifier of each of the multiple winding machines and the material status on each winding machine;

[0194] S1002, the winding machine whose material status is missing the first roll is identified as a candidate winding machine;

[0195] S1003, obtain the winding machine identifier of the candidate winding machine and the second material parameter information of the second roll on the candidate winding machine.

[0196] For example, the winding machine includes a host computer, and the control system and the host computer of the winding machine are directly connected for communication. The host computer of the winding machine reports the production information of the winding machine to the control system. The production information of the winding machine includes the winding machine identifier and the material status on each winding machine. The material status includes the quantity of each polarity roll on the winding machine. Based on the polarity and quantity of the rolls already on the winding machine, the intelligent control system determines whether the winding machine is missing an anode roll or a cathode roll. For example, if the first roll is an anode roll and the winding machine is missing an anode roll, then the winding machine is determined to be the candidate winding machine corresponding to the first roll. It can be understood that the candidate winding machine is the winding machine that is missing material, and what is missing is the roll of the polarity corresponding to the first roll.

[0197] In this embodiment, identifying the winding machine lacking material as a candidate winding machine can narrow down the matching range and improve production efficiency.

[0198] Furthermore, in related technologies, whether a winding machine is short of material relies entirely on manual judgment. This requires personnel to observe the winding machine to check for material shortages and then retrieve material from the discharge port, increasing the workload of workers and lacking flexibility. In this embodiment, however, the control system is linked to the winding machine, directly acquiring the machine's production information and automatically determining whether it is short of material. This eliminates the need for manual searching of winding machines on the production line, reducing the workload of on-site material retrieval personnel and improving production efficiency.

[0199] In some embodiments, after identifying a winding machine whose material status is missing the first roll as a candidate winding machine, the method further includes:

[0200] Store the winder identifier corresponding to the candidate winder in the first roll material shortage information;

[0201] After determining the target winding machine that matches the first roll from the candidate winding machines based on the first material parameter information and the second material parameter information, the method further includes:

[0202] Remove the target winding machine identifier from the material shortage information of the first coil.

[0203] For example, if the first roll is an anode roll and the candidate winding machine lacks an anode roll, then the winding machine identifier corresponding to the candidate winding machine is stored in the anode shortage list. As another example, if the first roll is a cathode roll and the candidate winding machine lacks a cathode roll, then the winding machine identifier corresponding to the candidate winding machine is stored in the cathode shortage list.

[0204] In this embodiment, after the target winding machine is determined, the first roll is fed onto the target winding machine. Once the target winding machine has no shortage of rolls, the winding machine identifier of the target winding machine is removed from the shortage list to avoid the winding machine that has already been matched being matched repeatedly.

[0205] In some specific scenario embodiments, as shown in Figure 11, the scenario embodiment may include:

[0206] S1101, the host computer of the winding machine uploads the production information of the winding machine to the control system. The production information of the winding machine includes the winding machine identification and the material status on the winding machine; the material status includes the quantity of coils of each polarity.

[0207] S1102, the control system processes the production information of the winding machine. This processing includes determining the number of anode coils on the winding machine, the number of cathode coils on the winding machine, the first total number of anode coils required by the winding machine, and the second total number of cathode coils required. For example, both the first and second total numbers are 2.

[0208] S1103, determine whether the number of anode material rolls on the winding machine is less than the first total quantity; if yes, execute S1105, otherwise execute S1109.

[0209] S1104, determine whether the number of cathode coils on the winding machine is less than the second total quantity; if yes, execute S1106, otherwise execute S1110.

[0210] S1105, Calculate the film width of the cathode roll on the winding machine. If there are two cathode rolls on the winding machine, the average film width of the two cathode rolls can be used as the film width of the cathode roll on the winding machine.

[0211] S1106, Calculate the film width of the anode material roll on the winding machine. If there are two anode material rolls on the winding machine, the average film width of the two anode material rolls can be used as the film width of the anode material roll on the winding machine.

[0212] S1107 stores the identification information of the winding machine and the film width of the cathode material roll on the winding machine into the anode shortage list.

[0213] S1108 stores the identification information of the winding machine and the film width of the anode material roll on the winding machine into the cathode shortage list.

[0214] S1109, clear the corresponding shortage information from the anode shortage list.

[0215] S1110, clear the corresponding shortage information from the cathode shortage list.

[0216] The above S1102 to S1110 are executed by the control system.

[0217] In some embodiments, after determining a target winding machine that matches the first roll from candidate winding machines based on the first material parameter information and the second material parameter information, the electrode roll matching method provided in this application further includes:

[0218] Send the location information of the target winding machine and the equipment identification information to the coil identification acquisition device.

[0219] The material roll identification acquisition device displays the location information and equipment identification information of the target winding machine to prompt the material handling personnel to load the material. The material handling personnel can obtain the information of the target winding machine displayed on the device based on the material roll identification and directly transport the first material roll to the target winding machine, which can improve matching accuracy and production efficiency.

[0220] In some specific scenario embodiments, as shown in Figure 12, the scenario embodiment may include:

[0221] S1201, the PDA scans the identification information of the first roll of material that has been shipped out of the warehouse and reports the identification information of the first roll of material to the control system.

[0222] S1202, the control system obtains the identification information of the first roll reported by the PDA.

[0223] S1203, query the polarity, first film width, and roll type of the first roll from the pre-stored film width information table. The roll type includes whether the first roll is an A-type fabric roll or a B-type fabric roll.

[0224] S1204, if the first roll is an anode roll, query the anode shortage list.

[0225] S1205, if the first roll is a cathode roll, query the cathode shortage list.

[0226] S1206, if the shortage list is not empty, a winding machine recommendation table is generated according to the film width in the shortage list and the first film width of the first roll, and the winding machine recommendation table is sent to the PDA. For example, the winding machine recommendation table includes winding machines with a matching degree at the previous preset number position.

[0227] S1207, the PDA displays the winding machine information corresponding to the recommended winding machine table.

[0228] The above S1202 to S1206 are executed by the control system.

[0229] Based on the same technical concept, this application also provides an electrode roll matching system. As shown in FIG13, the electrode roll matching system 1300 includes a roll identification acquisition device 1301 and a control system 1302.

[0230] The material roll identification acquisition device 1301 is used to acquire the first identification information of the first material roll and transmit the first identification information to the control system;

[0231] The control system 1302 is used to obtain first material parameter information of the first roll based on the first identification information, and to obtain the winding machine identifier of the candidate winding machine and the second material parameter information of the second roll on the candidate winding machine; and to determine the target winding machine that matches the first roll from the candidate winding machines according to the first material parameter information and the second material parameter information.

[0232] The roll identification acquisition device 1301 includes, but is not limited to, a PDA. The control system 1302 communicates with the PDA via a WebSocket interface.

[0233] According to the electrode roll matching system provided in this application embodiment, the roll identification acquisition device acquires the first identification information of the first roll, the control system acquires the first material parameter information of the first roll based on the first identification information, and acquires the second material parameter information of the second roll on the candidate winding machine, and determines the target winding machine that matches the first roll from the candidate winding machines, so as to load the first roll onto the target winding machine that matches it; compared with randomly loading the roll, the electrode roll matching system of this application embodiment matches the first roll with a suitable target winding machine based on the material parameter information, which can avoid the bare cell quality problem caused by improper matching of the roll and the winding machine, and can improve the yield of the bare cell.

[0234] In related technologies, material handlers randomly load coils onto a winding machine for production. To ensure the yield rate of the winding machine and avoid defective bare cells due to improper random matching, material coils are deliberately produced beyond specifications in the preceding process of winding. However, producing beyond specifications results in material waste and increases production costs.

[0235] The electrode roll matching system of this application matches a suitable target winding machine for the first roll based on the material parameter information. In this way, there is no need to deliberately produce rolls of higher specifications in the previous process, which can save material resources of the roll.

[0236] In some embodiments, the control system 1302 is further configured to send the location information of the target winding machine and the equipment identification information to the roll identification acquisition device;

[0237] The coil identification acquisition device 1301 is also used to display the location information of the target winding machine and the equipment identification information.

[0238] The material roll identification acquisition device displays the location information and equipment identification information of the target winding machine to prompt the material handling personnel to load the material. The material handling personnel can obtain the information of the target winding machine displayed on the device based on the material roll identification and directly transport the first material roll to the target winding machine, which can improve matching accuracy and production efficiency.

[0239] In some embodiments, the control system 1302 is further configured to acquire production information of the die-cutting machine, the production information including identification information and film width corresponding to the plurality of material rolls respectively, and to store the identification information and film width corresponding to the plurality of material rolls respectively.

[0240] In this embodiment, the intelligent control system is linked with the die-cutting machine to directly obtain and store the film width of the roll based on the production information of the die-cutting machine, so as to ensure that effective and accurate film width data can be obtained.

[0241] In some embodiments, as shown in FIG14, the electrode roll matching system 1300 further includes a warehouse management system 1303 and a warehouse control system 1304.

[0242] Warehouse management system 1303 sends the first roll of material outbound task to warehouse control system 1304;

[0243] The warehouse control system 1304 controls the outbound shipment of the first roll of material based on the outbound task;

[0244] The material roll identification acquisition device 1301 is specifically used to acquire the first identification information of the first material roll after the first material roll leaves the warehouse.

[0245] In this embodiment, the roll identification acquisition device scans and identifies the first roll that has been shipped out of the warehouse, and then matches the first roll that has been shipped out of the warehouse with its corresponding target winding machine.

[0246] It should be noted that the exemplary embodiments mentioned in this application describe methods or systems based on a series of steps or apparatus. However, this application is not limited to the order of the above steps; that is, the steps can be performed in the order mentioned in the embodiments, or in a different order, or several steps can be performed simultaneously.

[0247] The embodiments described above are not exhaustive, nor do they limit the application to the specific embodiments described herein. Clearly, many modifications and variations can be made based on the above description. These embodiments are selected and specifically described in this specification to better explain the principles and practical applications of this application, thereby enabling those skilled in the art to effectively utilize this application and its modifications. This application is limited only by the claims and their full scope and equivalents.

Claims

1. A method for matching electrode rolls, comprising: Obtain the first material parameter information of the first roll, the winding machine identifier of the candidate winding machine, and the second material parameter information of the second roll on the candidate winding machine; Based on the first material parameter information and the second material parameter information, a target winding machine that matches the first roll is determined from the candidate winding machines.

2. The method according to claim 1, wherein, The step of determining a target winding machine matching the first roll from the candidate winding machines based on the first material parameter information and the second material parameter information includes: Based on the first material parameter information and the second material parameter information, determine the matching degree between the second roll and the first roll on each of the candidate winding machines; Candidate winding machines that meet the preset matching conditions are selected as target winding machines that match the first roll.

3. The method according to claim 2, wherein, The first roll and the second roll have opposite polarities. The first material parameter information includes a first film width, and the second material parameter information includes a second film width. The matching degree between the second roll and the first roll on each of the candidate winding machines is determined based on the first material parameter information and the second material parameter information. Using candidate winding machines whose matching degree meets preset matching conditions as target winding machines to match the first roll includes: Calculate the first difference between the first film width and the second film width of the second roll on each of the candidate winding machines; Calculate the deviation between each of the first differences and the first preset target threshold; Based on the aforementioned deviations, a target winding machine that matches the first roll is determined.

4. The method according to claim 3, wherein, The step of determining the target winding machine that matches the first roll according to each of the aforementioned deviations includes: The candidate winding machine corresponding to the deviation with the smallest absolute value among the multiple deviations is selected as the target winding machine to match the first roll.

5. The method according to claim 3, wherein, The step of determining the target winding machine that matches the first roll according to each of the aforementioned deviations includes: The candidate winding machines are sorted in ascending order of the absolute values ​​of the deviations to obtain a candidate winding machine sequence. Select a candidate winding machine located at the first preset number position from the candidate winding machine sequence to obtain a target winding machine that matches the first roll.

6. The method according to claim 2, wherein, The first roll and the second roll have the same polarity. The first material parameter information includes a first film width, and the second material parameter information includes a second film width. The matching degree between the second roll and the first roll on each of the candidate winding machines is determined based on the first material parameter information and the second material parameter information. Using candidate winding machines whose matching degree meets preset matching conditions as target winding machines to match the first roll includes: Calculate the second difference between the first film width and the second film width of the second roll on each of the candidate winding machines; The candidate winding machine corresponding to the difference that is less than the second preset target threshold is taken as the target winding machine that matches the first material roll.

7. The method according to any one of claims 1-6, wherein, The first material parameter information includes a first film width, and the second material parameter information includes a second film width. The step of determining a target winding machine matching the first roll from the candidate winding machines based on the first material parameter information and the second material parameter information includes: From multiple first membrane width intervals, determine the first target membrane width interval to which the first membrane width belongs; From a plurality of second membrane width intervals, a second target membrane width interval corresponding to the first target membrane width interval is determined, and the plurality of first membrane width intervals and the plurality of second membrane width intervals correspond one-to-one, and the membrane width difference between the corresponding first membrane width intervals and the second membrane width intervals is within a preset difference range; From the candidate winding machines corresponding to the second film width within the second target film width range, a target winding machine that matches the first roll is determined.

8. The method according to any one of claims 1-7, wherein, The step of obtaining the first material parameter information of the first roll includes: Obtain the first identification information of the first material roll; Based on the correspondence between the identifier and the membrane width, the first membrane width corresponding to the first identifier information is determined. The correspondence between the identifier and the membrane width includes the correspondence between multiple identifier information and multiple membrane widths.

9. The method according to claim 8, wherein, Before determining the first film width corresponding to the first material identification information based on the correspondence between the identifier and the film width, the method further includes: Obtain production information from each die-cutting machine, including identification information and film width corresponding to multiple rolls; Store the identification information and the correspondence between the identification and film width of the multiple rolls respectively.

10. The method according to claim 9, wherein, The production information includes multiple film widths corresponding to multiple locations on the roll; The step of storing the identification information and film width corresponding to the multiple rolls into film width information includes: For at least one roll, calculate the mean or median of the film width corresponding to multiple film widths at multiple locations on the roll, and store the identification information corresponding to the roll and the mean or median of the film width in the film width information.

11. The method according to any one of claims 1-10, wherein, Obtain the winding machine identifier of the candidate winding machine and the second material parameter information of the second roll on the candidate winding machine, including: Obtain the winding machine identifier and material status of each of the multiple winding machines; The winding machine whose material status is missing the first roll is identified as a candidate winding machine; Obtain the winding machine identifier of the candidate winding machine and the second material parameter information of the second roll on the candidate winding machine.

12. The method according to claim 11, wherein, After identifying the winding machine whose material status is missing the first roll as a candidate winding machine, the method further includes: Store the winder identifier corresponding to the candidate winder in the first roll material shortage information; After determining a target winding machine matching the first roll from the candidate winding machines based on the first material parameter information and the second material parameter information, the method further includes: Remove the winding machine identifier of the target winding machine from the material shortage information of the first coil.

13. The method according to any one of claims 1-12, wherein, After determining a target winding machine matching the first roll from the candidate winding machines based on the first material parameter information and the second material parameter information, the method further includes: The location information of the target winding machine and the equipment identification information are sent to the material roll identification acquisition device.

14. An electrode roll matching system, comprising: A roll identification acquisition device is used to acquire first identification information of a first roll and transmit the first identification information to the control system; The control system is used to obtain the first material parameter information of the first roll based on the first identification information, and to obtain the winding machine identifier of the candidate winding machine and the second material parameter information of the second roll on the candidate winding machine. Based on the first material parameter information and the second material parameter information, a target winding machine that matches the first roll is determined from the candidate winding machines.

15. The electrode roll matching system according to claim 14, wherein, The control system is also used to send the location information of the target winding machine and the equipment identification information to the coil identification acquisition device; The coil identification acquisition device is also used to display the location information and equipment identification information of the target winding machine.

16. The electrode roll matching system according to any one of claims 13-15, wherein, The control system is also used to acquire production information of the die-cutting machine, the production information including identification information and film width corresponding to the plurality of material rolls respectively, and to store the identification and film width correspondence relationship between the identification information and film width corresponding to the plurality of material rolls respectively.

17. The electrode roll matching system according to any one of claims 13-16, wherein, The system also includes: The warehouse management system sends the outbound task for the first roll of material to the warehouse control system; The warehouse control system controls the outbound shipment of the first roll of material based on the outbound task; The material roll identification acquisition device is specifically used to acquire the first identification information of the first material roll after the first material roll leaves the warehouse.

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