Coating system and coating method

Abstract

This application discloses a system and coating method. The coating system uses a driving device to drive the material from the unwinding device to the winding device, a data acquisition device to collect the material parameters, and a control device to predict the winding time of the material. At the winding time, the material parameters are stored in the film sheet corresponding to the material. Because the material parameters are stored based on the winding time, the discrepancy between the film sheet and the actual film roll is greatly reduced if the material parameters are stored before the material is wound by the coating winding device.

Description

Technical Field

[0001] This application relates to the field of coating, specifically to a coating system and coating method. Background Technology

[0002] Electrode sheets are the foundation of power batteries, affecting their electrochemical performance and safety. Electrode sheets typically consist of a current collector and a coating applied to the current collector. Currently, the common method for preparing electrode sheets is to apply a slurry to the current collector and then dry the organic solvent in the slurry.

[0003] Electrode sheets can be manufactured in the form of membrane rolls, each roll having a unique corresponding membrane sheet containing the material parameters for that roll. Currently, inconsistencies frequently arise between the data in the membrane roll and the data in the membrane roll sheet.

[0004] The above statements are for the purpose of providing background information in relation to this application only and do not necessarily constitute prior art. Summary of the Invention

[0005] In view of the above problems, embodiments of this application provide a system and coating method to reduce the degree of inconsistency between the data in the film roll and the film roll sheet during the coating process.

[0006] In a first aspect, this application provides a coating system, including: an unwinding device, a driving device, a collection device, a winding device, and a control device;

[0007] The driving device is used to drive the material unwound by the unwinding device to move toward the winding device, and the winding device is used to wind up the material;

[0008] The acquisition device is used to acquire material parameters of the material passing through the acquisition device;

[0009] The control device is used to predict the winding time when the material will be wound by the winding device based on the coating process parameters, and at the winding time, to store the material parameters obtained from the acquisition device into the film form corresponding to the material.

[0010] In the solution provided in this embodiment, since the material parameters of the material are stored based on the winding time of the material, the situation of inconsistency between the film roll sheet and the film roll caused by storing the material parameters of the material before the material is wound by the coating and winding device can be greatly reduced.

[0011] In some embodiments, the control device includes: a host computer and a slave computer;

[0012] The lower-level machine is used to acquire the driving parameters of the driving device and transmit the driving parameters to the upper-level machine;

[0013] The host computer is used to acquire the material parameters from the acquisition device; based on the driving parameters and the pre-configured distance parameters, it predicts the winding time when the material will be wound by the winding device, and at the winding time, it stores the material parameters in the film form corresponding to the material; the distance parameters are used to indicate the transmission distance between the acquisition device and the winding device.

[0014] In the solution provided in this embodiment, the control device in the coating system is jointly implemented by a host computer and a slave computer. The host computer and the slave computer interact with different devices in the coating system, which helps to improve the reliability of the control device.

[0015] In some embodiments, the host computer is used for:

[0016] Based on the driving parameters and the distance parameters, the transmission time required for the material to be transferred from the collection device to the winding device is predicted.

[0017] The winding time is calculated based on the transmission duration and the acquisition time of the material parameters acquired by the acquisition device.

[0018] In the solution provided in this embodiment, the transmission time from the acquisition device to the winding device is calculated, and then the winding time is calculated, which can improve the accuracy of the determined winding time.

[0019] In some embodiments, the host computer is used for:

[0020] Based on the rotational speed acquisition cycle and the rotational speed acquired in each rotational speed acquisition cycle, the target distance of the material being transported in each rotational speed acquisition cycle is calculated.

[0021] Based on the target distance and the distance parameters, calculate the cumulative number of data collections;

[0022] The transmission duration is obtained by multiplying the cumulative number of acquisitions by the rotational speed acquisition cycle.

[0023] In the solution provided in this embodiment, the cumulative acquisition period is calculated by using multiple speed acquisition cycles and the speed within each acquisition cycle, and then the transmission time is calculated. This calculation method takes into account the situation where the speed of the drive device is not constant in actual operating conditions. Therefore, this calculation method is closer to the actual operating conditions of the drive device, thereby improving the accuracy of the final calculated transmission time.

[0024] In some embodiments, the coating system further includes:

[0025] A cutting device is used to determine that the current roll changing conditions are met and to cut the material passing through the cutting device.

[0026] The control device is also used to control the winding device to switch to a new roll and create a film form corresponding to the new roll.

[0027] In the solution provided in this embodiment, a cutting device is used in the coating system to cut the material, which can improve coating efficiency compared to manual material cutting. Furthermore, the control device controls the winding device to automatically switch to a new roll and creates a new film sheet corresponding to the new roll, thereby realizing automatic roll changing of the winding device and improving coating efficiency.

[0028] In some embodiments, the coating system further includes a coating device, which includes a coating die and a coating oven;

[0029] A coating die head, used to coat the material that has passed through the coating die head;

[0030] A coating oven is used to bake the material coated by the coating die.

[0031] In the solution provided in this embodiment, the coating system includes a coating die for coating the material and a coating oven for baking the coated material. The introduction of coating equipment such as the coating die and the coating oven allows the data acquisition device to collect more material parameters, thereby helping to understand the coating performance of the coating system.

[0032] Secondly, this application provides a coating method applied to the coating system described in the first aspect, the method comprising:

[0033] Based on the coating process parameters, the control device predicts the winding time when the material will be wound by the winding device.

[0034] At the winding time, the control device stores the material parameters of the material collected by the acquisition device into the film form corresponding to the material.

[0035] In the solution provided in this embodiment, since the material parameters of the material are stored based on the winding time of the material, the situation of inconsistency between the film roll sheet and the film roll caused by storing the material parameters of the material before the material is wound by the coating and winding device can be greatly reduced.

[0036] In some embodiments, the control device includes a host computer and a slave computer; based on coating process parameters, the control device predicts the winding time when the material is wound by the winding device, including:

[0037] The lower-level machine obtains the driving parameters of the driving device and transmits the driving parameters to the upper-level machine;

[0038] The host computer acquires the material parameters collected by the acquisition device, and based on the driving parameters and pre-configured distance parameters, predicts the winding time when the material will be wound by the winding device, and stores the material parameters in the film sheet corresponding to the material at the winding time; the distance parameters are used to indicate the transmission distance between the acquisition device and the winding device.

[0039] In the solution provided in this embodiment, the upper computer and the lower computer interact with different devices in the coating system to determine the winding time when the material is wound by the winding device. This helps to improve the reliability of the control device.

[0040] In some embodiments, the host computer acquires the material parameters collected by the acquisition device, and based on the driving parameters and pre-configured distance parameters, predicts the winding time when the material will be wound by the winding device, including:

[0041] Based on the driving parameters and the distance parameters, the host computer predicts the transmission time required for the material to be transmitted from the acquisition device to the winding device.

[0042] Based on the transmission duration and the acquisition time of the material parameters acquired by the acquisition device, the winding time is calculated by the host computer.

[0043] In the solution provided in this embodiment, the transmission time from the acquisition device to the winding device is calculated, and then the winding time is calculated, which can improve the accuracy of the determined winding time.

[0044] In some embodiments, based on the driving parameters and the distance parameters, the host computer predicts the transmission time required for the material to be transferred from the acquisition device to the winding device, including:

[0045] Based on the rotational speed acquisition cycle and the rotational speed acquired in each rotational speed acquisition cycle, the target distance of the material being transported in each rotational speed acquisition cycle is calculated.

[0046] Based on the target distance and the distance parameters, calculate the cumulative number of data collections;

[0047] The transmission duration is obtained by multiplying the cumulative number of acquisitions by the rotational speed acquisition cycle.

[0048] In the solution provided in this embodiment, the cumulative acquisition period is calculated by using multiple speed acquisition cycles and the speed within each acquisition cycle, and then the transmission time is calculated. This calculation method takes into account the situation where the speed of the drive device is not constant in actual operating conditions. Therefore, this calculation method is closer to the actual operating conditions of the drive device, thereby improving the accuracy of the final calculated transmission time.

[0049] Thirdly, this application provides a coating method, applied to a control device in the coating system described in the first aspect, the method comprising:

[0050] Based on the coating process parameters, predict the winding time when the material is wound up by the winding device;

[0051] At the winding time, the material parameters of the material obtained from the acquisition device are stored in the film form corresponding to the material.

[0052] In some embodiments, predicting the winding time of the material being wound by the winding device based on coating process parameters includes:

[0053] Based on the driving parameters obtained from the driving device and the pre-configured distance parameters, the transmission time required for the material to be transferred from the collecting device to the winding device is predicted, wherein the distance parameters are used to indicate the distance between the collecting device and the winding device.

[0054] The winding time is calculated based on the transmission duration and the acquisition time of the material parameters obtained from the acquisition device.

[0055] In some embodiments, based on driving parameters obtained from the driving device and pre-configured distance parameters, predicting the transmission time required for the material to be transferred from the collection device to the winding device includes:

[0056] Based on the rotational speed acquisition cycle and the rotational speed acquired in each rotational speed acquisition cycle, the target distance of the material being transported in each rotational speed acquisition cycle is calculated.

[0057] Based on the target distance and the distance parameters, calculate the cumulative number of data collections;

[0058] The transmission duration is obtained by multiplying the cumulative number of acquisitions by the rotational speed acquisition cycle.

[0059] 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 in accordance with the contents of the specification, and 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

[0060] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0061] Figure 1 This is a schematic diagram of the coating system of some embodiments of this application;

[0062] Figure 2 This is a schematic flowchart of a coating method according to some embodiments of this application;

[0063] Figure 3 This is another schematic flowchart of a coating method according to some embodiments of this application;

[0064] Figure 4 This is another schematic flowchart of a coating method according to some embodiments of this application. Detailed Implementation

[0065] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0066] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein 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 specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0067] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0068] In this document, the term "embodiment" means that a particular 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 separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0069] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0070] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0071] Energy conservation and emission reduction are key to the sustainable development of the automotive industry, and electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an integral part of this sustainable development. For electric vehicles, battery technology is another crucial factor in their development.

[0072] Electrode plates are the foundation of power batteries, affecting their electrochemical performance and safety.

[0073] Electrode sheets typically consist of a current collector and a coating applied to the current collector. Currently, the common method for preparing electrode sheets is to apply a slurry to the current collector and then dry the organic solvent in the slurry.

[0074] Electrode sheets can be manufactured in the form of film rolls, each roll having a unique corresponding film sheet containing the material parameters of that roll. These material parameters characterize parameters such as the size and weight of the electrode sheet, the weight of the coating, and the viscosity of the slurry.

[0075] In related technologies, the material parameters detected by the acquisition device are stored in the membrane form in real time; that is, the acquisition device stores the material parameters in the membrane form immediately after detecting them. However, because the detection position of the acquisition device is different from the winding position of the electrode sheet, after the electrode sheet is detected by the acquisition device, it usually takes some time before it is transferred from the acquisition device to the winding device and wound up. Therefore, it is possible that the material parameters of the electrode sheet are stored in the membrane form corresponding to the current membrane roll, but when the cutting device at the winding device moves to realize the roll change, the electrode sheet has not yet been wound up to the current membrane roll, resulting in a discrepancy between the material parameters in the membrane roll and the membrane roll sheet.

[0076] To reduce discrepancies between the film roll and the film roll sheet during the coating and winding process, one or more embodiments of this application propose a coating system. This system uses a driving device to move the material from the unwinding device to the winding device, employs a data acquisition device to collect the material parameters, and a control device to predict the winding time. At the winding time, the material parameters are stored in the corresponding film roll sheet. Because the material parameters are stored based on the winding time, the discrepancy between the film roll sheet and the film roll can be significantly reduced if the material parameters are stored before the material is wound by the coating and winding device.

[0077] It should be understood that the data storage method based on coating process disclosed in the embodiments of this application includes, but is not limited to, applications in coating processes of coating objects that can be coated, such as current collectors, paper, cloth, and plastic films.

[0078] like Figure 1 As shown, the coating system may include:

[0079] Unwinding device 11, driving device 12, data acquisition device 13, winding device 14, and control device 15;

[0080] The drive device 12 is used to drive the material unwound by the unwinding device 11 to move toward the winding device 14, and the winding device 14 is used to wind up the material.

[0081] The data acquisition device 13 is used to collect the material parameters of the material passing through the data acquisition device 13;

[0082] The control device 15 is used to predict the winding time of the material by the winding device based on the coating process parameters, and at the winding time, it stores the material parameters obtained from the acquisition device 13 into the film form corresponding to the material.

[0083] In this embodiment, the coating process parameters are parameters that characterize the transmission time required for material to be transferred from the collection device 13 to the winding device 14. In application, these coating process parameters include, but are not limited to, relevant data in the coating system drawings and historical operating data of the coating system. The relevant data in the coating system drawings may include the distance between the winding device 14 and the collection device 13, and the historical operating data of the coating system can characterize the transmission time required for material to be transferred from the collection device 13 to the winding device 14.

[0084] In this embodiment, the winding time of the material includes, but is not limited to, the moment when the material is taken up by the roll in the coating machine winding device or the moment when the material is completely covered by the roll.

[0085] In this embodiment, the acquisition device 13 includes, but is not limited to, a surface density meter, a CCD (Charge Coupled Device) measurement system, etc. It should be understood that the coating system can be equipped with multiple acquisition devices 13. The multiple acquisition devices 13 can be of the same type or of different types. For example, multiple acquisition devices 13 can all be surface density meters, or multiple acquisition devices 13 can include both surface density meters and CCD measurement systems.

[0086] In the solution provided in this embodiment, since the material parameters of the material are stored based on the winding time of the material, the situation of inconsistency between the film roll sheet and the film roll caused by storing the material parameters of the material before the material is wound by the coating and winding device can be greatly reduced.

[0087] In one or more embodiments of this application, such as Figure 1 As shown, the control device 15 includes: a host computer 151 and a slave computer 152;

[0088] The lower-level computer 152 is used to obtain the driving parameters of the driving device 12 and transmit the driving parameters to the upper-level computer 151;

[0089] The host computer 151 is used to obtain material parameters from the acquisition device 13; based on the driving parameters and the pre-configured distance parameters, it predicts the winding time when the material will be wound by the winding device 14, and at the winding time, it stores the material parameters in the film form corresponding to the material; the distance parameters are used to indicate the transmission distance between the acquisition device 13 and the winding device 14.

[0090] In this embodiment, the driving device includes, but is not limited to, a motor, a back roller, etc., and the driving parameters include, but are not limited to, parameters such as speed and power.

[0091] In this embodiment, the lower-level machine 152 and the upper-level machine 151 can communicate using wired or wireless means.

[0092] In the solution provided in this embodiment, the control device in the coating system is jointly implemented by a host computer and a slave computer. The host computer and the slave computer interact with different devices in the coating system, which helps to improve the reliability of the control device.

[0093] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0094] In one or more embodiments of this application, the host computer 151 is used for:

[0095] Based on the driving parameters and distance parameters, the transmission time required for the material to be transferred from the collection device 13 to the winding device 14 is predicted.

[0096] The winding time is calculated based on the transmission duration and the acquisition time of the material parameters acquired by the acquisition device 13.

[0097] In this embodiment, the driving parameters can be converted to obtain the driving speed of the driving device 12, and the ratio of the distance represented by the distance parameter to the driving speed can be calculated to obtain the transmission time required for the collected material to be transmitted from the collection device 13 to the winding device 14.

[0098] In one example, taking the rotational speed of the back roller as the driving parameter, the formula for calculating the driving speed can be V = 2π * R * n, where R is the radius of the back roller and n is the rotational speed of the back roller. It should be noted that the rotational speed of the back roller here can be the theoretical speed. Of course, to improve the accuracy of the calculation, the rotational speed of the back roller can also be acquired in real time. In practical applications, an encoder can be installed on the back roller to acquire the rotational speed of the back roller.

[0099] It should be understood that the roll-up time is the sum of the transmission time and the acquisition time.

[0100] In the solution provided in this embodiment, the transmission time from the acquisition device to the winding device is calculated, and then the winding time is calculated, which can improve the accuracy of the determined winding time.

[0101] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0102] In one or more embodiments of this application, the host computer 151 is used for:

[0103] Based on the driving parameters, including the rotational speed acquisition cycle and the rotational speed acquired in each rotational speed acquisition cycle, the target distance of material being transported in each rotational speed acquisition cycle is calculated.

[0104] Calculate the cumulative number of data collections based on the target distance and distance parameters;

[0105] The transmission duration is obtained by multiplying the cumulative number of data acquisitions by the data acquisition cycle at rotation speed.

[0106] It should be understood that the cumulative number of data collections represents the number of target distances required to reach the distance parameter.

[0107] Taking the data acquisition device 13 as an example of a surface density meter, assuming that the material parameters measured by the surface density meter at time T1 are recorded in the film roll at time T2 after a delay of x, and the distance between the surface density meter and the winding device is L1, then L1 = t * (V1 + V2 + ... + Vm). The distance the material moves every t time is equal to the coating speed multiplied by time. When the cumulative distance traveled in the mth time is equal to the distance L1, it is considered that the electrode at the surface density meter has moved to the winding device, with a delay of x = t * m, and T2 = T1 + x.

[0108] In this embodiment, to meet engineering application requirements, the cumulative number of data collections can be rounded down if the calculated cumulative number of collections is not an integer. Specifically, based on the target distance and distance parameters, the maximum integer number of collections is calculated; the cumulative target distance corresponding to the maximum integer number of collections is less than the distance parameters, and the cumulative target distance is the sum of the target distances; a mapping relationship is determined with the remaining distance parameters; the remaining distance parameters are the difference between the distance parameters and the cumulative target distances; the mapping relationship is the correspondence between the maximum integer number of collections and the cumulative number of collections; based on the mapping relationship and the maximum integer number of collections, the cumulative number of collections is determined.

[0109] In this embodiment, a mapping relationship can be pre-set based on the relative magnitude of the standard distance parameter and the remaining distance parameter within the acquisition period.

[0110] For example, the mapping relationship can be set as follows:

[0111]

[0112] Where s is the cumulative number of data collections, u is the maximum integer number of data collections, p is the remaining transmission distance, and A is the standard transmission distance.

[0113] In one example, the distance parameter is 100m, the standard transmission distance within one acquisition cycle is 20m, the target distance for the first acquisition cycle is 20m, the target distance for the second acquisition cycle is 18m, the target distance for the third acquisition cycle is 23m, the target distance for the fourth acquisition cycle is 17m, and the target distance for the fifth acquisition cycle is 21m. Calculations show that in this example, the maximum number of acquisitions is 5, the cumulative target distance is 99m, and the remaining distance is 1m. Since 1m < 20 / 2 = 10m, the cumulative number of acquisitions can be determined to be 5.

[0114] In the solution provided in this embodiment, the cumulative acquisition period is calculated by using multiple speed acquisition cycles and the speed within each acquisition cycle, and then the transmission time is calculated. This calculation method takes into account the situation where the speed of the drive device is not constant in actual operating conditions. Therefore, this calculation method is closer to the actual operating conditions of the drive device, thereby improving the accuracy of the final calculated transmission time.

[0115] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0116] In one or more embodiments of this application, such as Figure 1 As shown, the coating system also includes:

[0117] The cutting device 16 is used to determine that the current roll changing conditions are met and to cut the material passing through the cutting device 16;

[0118] The control device 15 is also used to control the winding device 14 to switch to a new roll and create a film sheet corresponding to the new roll.

[0119] In this embodiment, roll-changing conditions can be preset based on a roll diameter threshold or a roll-up duration threshold. For example, the roll-changing conditions can be set to the roll diameter being greater than the roll diameter threshold or the roll-up duration being greater than the roll-up duration threshold.

[0120] In the solution provided in this embodiment, a cutting device is used in the coating system to cut the material, which can improve coating efficiency compared to manual material cutting. Furthermore, the control device controls the winding device to automatically switch to a new roll and creates a new film sheet corresponding to the new roll, thereby realizing automatic roll changing of the winding device and improving coating efficiency.

[0121] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0122] In one or more embodiments of this application, such as Figure 1 As shown, the coating system also includes coating equipment, which includes a coating die 17 and a coating oven 18.

[0123] Coating die 17 is used to coat the material that has passed through the coating die 17;

[0124] The coating oven 18 is used to bake the material coated by the coating die 17.

[0125] In the solution provided in this embodiment, the coating system includes a coating die for coating the material and a coating oven for baking the coated material. The introduction of coating equipment such as the coating die and the coating oven allows the data acquisition device to collect more material parameters, thereby helping to understand the coating performance of the coating system.

[0126] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0127] This application also provides a coating method, which can be applied to the aforementioned coating system, such as... Figure 2 As shown, the method may include the following steps:

[0128] Step 201: Based on the coating process parameters, predict the winding time when the material will be wound by the winding device using the control device;

[0129] Step 202: At the winding time, the material parameters of the material collected by the acquisition device are stored in the film form corresponding to the material through the control device.

[0130] In the solution provided in this embodiment, since the material parameters of the material are stored based on the winding time of the material, the situation of inconsistency between the film roll sheet and the film roll caused by storing the material parameters of the material before the material is wound by the coating and winding device can be greatly reduced.

[0131] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0132] In some embodiments, the control device includes a host computer and a slave computer; based on coating process parameters, the control device predicts the winding time when the material is wound by the winding device, including:

[0133] The lower-level machine obtains the driving parameters of the driving device and transmits the driving parameters to the upper-level machine.

[0134] The host computer acquires the material parameters collected by the acquisition device. Based on the driving parameters and pre-configured distance parameters, it predicts the winding time when the material will be wound by the winding device. At the winding time, the material parameters are stored in the film form corresponding to the material. The distance parameters are used to indicate the transmission distance between the acquisition device and the winding device.

[0135] In the solution provided in this embodiment, the upper computer and the lower computer interact with different devices in the coating system to determine the winding time when the material is wound by the winding device. This helps to improve the reliability of the control device.

[0136] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0137] In some embodiments, the material parameters collected by the acquisition device are obtained through a host computer, and the winding time of the material being wound by the winding device is predicted based on the driving parameters and pre-configured distance parameters, including:

[0138] Based on driving parameters and distance parameters, the transmission time required for the material to be transferred from the acquisition device to the winding device is predicted by the host computer.

[0139] Based on the transmission time and the acquisition time of material parameters collected by the acquisition device, the rewinding time is calculated by the host computer.

[0140] In the solution provided in this embodiment, the transmission time from the acquisition device to the winding device is calculated, and then the winding time is calculated, which can improve the accuracy of the determined winding time.

[0141] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0142] In some embodiments, based on driving parameters and distance parameters, the host computer predicts the transmission time required for material to be transferred from the acquisition device to the winding device, including:

[0143] Based on the driving parameters, including the rotational speed acquisition cycle and the rotational speed acquired in each rotational speed acquisition cycle, the target distance of material being transported in each rotational speed acquisition cycle is calculated.

[0144] Calculate the cumulative number of data collections based on the target distance and distance parameters;

[0145] The transmission duration is obtained by multiplying the cumulative number of data acquisitions by the data acquisition cycle at rotation speed.

[0146] In the solution provided in this embodiment, the cumulative acquisition period is calculated by using multiple speed acquisition cycles and the speed within each acquisition cycle, and then the transmission time is calculated. This calculation method takes into account the situation where the speed of the drive device is not constant in actual operating conditions. Therefore, this calculation method is closer to the actual operating conditions of the drive device, thereby improving the accuracy of the final calculated transmission time.

[0147] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0148] It should be understood that the coating method in the embodiments of this application and the aforementioned coating system belong to the same inventive concept, and therefore the implementation details of the coating method and the coating system can be referred to each other.

[0149] This application also provides a coating method, which can be applied to the control device of a coating system, such as... Figure 3 As shown, the method may include the following steps:

[0150] Step 301: Based on the coating process parameters, predict the winding time when the material will be wound by the winding device;

[0151] Step 302: At the rewinding time, the material parameters of the material obtained from the acquisition device are stored in the film form corresponding to the material.

[0152] In some embodiments, predicting the winding time of the material by the winding device based on coating process parameters includes:

[0153] Based on the driving parameters obtained from the driving device and the pre-configured distance parameters, the transmission time required for the material to be transferred from the collection device to the winding device is predicted. The distance parameters are used to indicate the distance between the collection device and the winding device.

[0154] The winding time is calculated based on the transmission duration and the acquisition time of the material parameters obtained from the acquisition device.

[0155] In some embodiments, based on driving parameters obtained from the driving device and pre-configured distance parameters, predicting the transmission time required for material to be transferred from the collection device to the winding device includes:

[0156] Based on the driving parameters, including the rotational speed acquisition cycle and the rotational speed acquired in each rotational speed acquisition cycle, the target distance of material being transported in each rotational speed acquisition cycle is calculated.

[0157] Calculate the cumulative number of data collections based on the target distance and distance parameters;

[0158] The transmission duration is obtained by multiplying the cumulative number of data acquisitions by the data acquisition cycle at rotation speed.

[0159] The coating method provided in the above embodiments of this application has the same inventive concept and has the same beneficial effects as the methods adopted, run or implemented by the application stored therein.

[0160] By calculating the target distance of material transported within each sampling period, and then combining the target distance and the transport distance to calculate the cumulative number of samplings, the accuracy of the cumulative number of samplings is improved.

[0161] According to some embodiments of this application, optionally, in order to improve the consistency between the storage time of material parameters in the membrane form and the winding time of the material, after the acquisition device detects the material parameters, it can first store the material parameters in a storage device, and then read the material parameters from the storage device and write them into the membrane form after the winding time arrives. The storage device includes, but is not limited to, disks, caches, etc.

[0162] Specifically, at the rewinding time, the material parameters of the material are stored in the membrane form corresponding to the material, including: reading the material parameters from the storage device at the rewinding time; and writing the material parameters into the membrane form.

[0163] By temporarily storing material parameters in a storage device, the foundation is laid for storing material parameters in the film form when the subsequent winding time arrives.

[0164] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0165] The following is based on Figure 1 Taking the coating system shown as an example, the coating method in the embodiments of this application is described, wherein, in Figure 1 In the diagram, starting from the unwinding device 11, the acquisition device 13 located between the unwinding device 11 and the coating die 17 is labeled as surface density meter 1, the acquisition device 13 adjacent to surface density meter 1 is labeled as surface density meter 2, the acquisition device 13 adjacent to surface density meter 2 is labeled as surface density meter 3, the acquisition device 13 adjacent to surface density meter 2 is labeled as CCD measurement system 1, and the acquisition device 13 adjacent to CCD measurement system 1 is labeled as CCD measurement system 2.

[0166] like Figure 4 As shown, the method may include the following steps:

[0167] Step 401: Distance calculation.

[0168] The distance difference between the areal density meter 1 and the winding device is L1. L1 is the length of the material between the starting point and the ending point, with the material at the areal density meter 1 as the starting point and the material at the winding device as the ending point. To obtain L1, lines can be drawn on the material at the starting and ending points, and after winding, the material can be taken out and the length of the material between the two lines can be measured.

[0169] The distance difference L2 between the areal density meter 2 and the winding device is the length of the material between the starting point and the ending point, with the material at the areal density meter 2 as the starting point and the material at the winding device as the ending point. To obtain L2, lines can be drawn between the starting and ending points of the material, and after winding, the material can be taken out and the length of the material between the two lines can be measured.

[0170] The distance difference L3 between the areal density meter 3 and the winding device is the length of the material between the starting point and the ending point, with the material at the areal density meter 3 as the starting point and the material at the winding device as the ending point. To obtain L3, lines can be drawn on the material at the starting and ending points, and after winding, the material can be taken out and the length of the material between the two lines can be measured.

[0171] The distance difference L4 between CCD measurement system 1 and the winding device is the length of the material from the starting point 4 (material at measurement start point) to the winding device (material at end point). Similarly, the distance difference L5 between CCD measurement system 2 and the winding device is the length of the material from the starting point 5 (material at measurement start point) to the winding device (material at end point). Likewise, L4 and L5 can also be obtained by marking lines on the material at the start and end points, winding it up, and then measuring the length of the material between the two marked lines.

[0172] Step 502, speed acquisition.

[0173] An encoder is installed on the shaft end of the back roller to record the rotational speed n in real time. The data is collected once at interval t. If the radius of the back roller is R, then the real-time transmission speed V = 2π*R*n.

[0174] Step 503, Delay recording.

[0175] Taking the material parameters at the surface density meter 1 as an example, the data measured by the surface density meter 1 at time T1 is recorded in the film roll sheet after a delay of x time.

[0176] L1 = t * (V1 + V2 + ... + Vm), the distance the material moves in each time interval t is equal to the transmission speed multiplied by the time, the cumulative distance traveled in the mth time is equal to the distance from L1, then it is considered that the material at the measurement starting point 1 has moved to the position of the winding device, the delay time x = t * m, T2 = T1 + x.

[0177] Similarly, the calculations are performed at the other four data acquisition devices, and the material parameters are stored in the film roll sheet based on the calculation time.

[0178] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0179] The description of the various embodiments above tends to emphasize the differences between the various embodiments. The similarities or similarities between them can be referred to, and for the sake of brevity, they will not be repeated here.

[0180] It should be noted that:

[0181] The term "module" is not intended to be limited to a specific physical form. Depending on the application, a module can be implemented as hardware, firmware, software, and / or a combination thereof. Furthermore, different modules may share common components or even be implemented using the same components. Clear boundaries may or may not exist between different modules.

[0182] The algorithms and displays provided herein are not inherently related to any particular computer, virtual device, or other equipment. Various general-purpose devices can also be used with the examples based on this. The required structure for constructing such devices is obvious from the above description. Furthermore, this application is not directed to any particular programming language. It should be understood that the content of this application described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of this application.

[0183] It should be understood that although the steps in the flowcharts of the accompanying figures are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the accompanying figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the sub-steps or stages of other steps.

[0184] The above embodiments merely illustrate the implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A coating system, characterized in that, include: Unwinding device, drive device, data acquisition device, winding device, and control device; The driving device is used to drive the material unwound by the unwinding device to move toward the winding device, and the winding device is used to wind up the material; The acquisition device is used to acquire material parameters of the material passing through the acquisition device; The control device is used to predict the winding time when the material will be wound by the winding device based on the coating process parameters, and at the winding time, to store the material parameters obtained from the acquisition device into the film form corresponding to the material.

2. The coating system according to claim 1, characterized in that, The control device includes: a host computer and a slave computer; The lower-level machine is used to acquire the driving parameters of the driving device and transmit the driving parameters to the upper-level machine; The host computer is used to acquire the material parameters from the acquisition device; based on the driving parameters and the pre-configured distance parameters, it predicts the winding time when the material will be wound by the winding device, and at the winding time, it stores the material parameters in the film form corresponding to the material; the distance parameters are used to indicate the transmission distance between the acquisition device and the winding device.

3. The coating system according to claim 2, characterized in that, The host computer is used for: Based on the driving parameters and the distance parameters, the transmission time required for the material to be transferred from the collection device to the winding device is predicted. The winding time is calculated based on the transmission duration and the acquisition time of the material parameters acquired by the acquisition device.

4. The coating system according to claim 3, characterized in that, The host computer is used for: Based on the rotational speed acquisition cycle and the rotational speed acquired in each rotational speed acquisition cycle, the target distance of the material being transported in each rotational speed acquisition cycle is calculated. Based on the target distance and the distance parameters, calculate the cumulative number of data collections; The transmission duration is obtained by multiplying the cumulative number of acquisitions by the rotational speed acquisition cycle.

5. The coating system according to any one of claims 1-4, characterized in that, The coating system also includes: A cutting device is used to determine that the current roll changing conditions are met and to cut the material passing through the cutting device. The control device is also used to control the winding device to switch to a new roll and create a film form corresponding to the new roll.

6. The coating system according to any one of claims 1-4, characterized in that, The coating system also includes coating equipment, which includes a coating die and a coating oven; A coating die head, used to coat the material that has passed through the coating die head; A coating oven is used to bake the material coated by the coating die.

7. A coating method, characterized in that, The method, applied to the coating system according to any one of claims 1-6, comprises: Based on the coating process parameters, the control device predicts the winding time when the material will be wound by the winding device. At the winding time, the control device stores the material parameters of the material collected by the acquisition device into the film form corresponding to the material.

8. The coating method according to claim 7, characterized in that, The control device includes a host computer and a slave computer; based on coating process parameters, the control device predicts the winding time when the material is wound by the winding device, including: The lower-level machine obtains the driving parameters of the driving device and transmits the driving parameters to the upper-level machine; The host computer acquires the material parameters collected by the acquisition device, and based on the driving parameters and pre-configured distance parameters, predicts the winding time when the material will be wound by the winding device, and stores the material parameters in the film sheet corresponding to the material at the winding time; the distance parameters are used to indicate the transmission distance between the acquisition device and the winding device.

9. The coating method according to claim 8, characterized in that, The host computer acquires the material parameters collected by the acquisition device, and based on the driving parameters and pre-configured distance parameters, predicts the winding time when the material will be wound by the winding device, including: Based on the driving parameters and the distance parameters, the host computer predicts the transmission time required for the material to be transmitted from the acquisition device to the winding device. Based on the transmission duration and the acquisition time of the material parameters acquired by the acquisition device, the winding time is calculated by the host computer.

10. The coating method according to claim 9, characterized in that, Based on the driving parameters and the distance parameters, the host computer predicts the transmission time required for the material to be transferred from the acquisition device to the winding device, including: Based on the rotational speed acquisition cycle and the rotational speed acquired in each rotational speed acquisition cycle, the target distance of the material being transported in each rotational speed acquisition cycle is calculated. Based on the target distance and the distance parameters, calculate the cumulative number of data collections; The transmission duration is obtained by multiplying the cumulative number of acquisitions by the rotational speed acquisition cycle.

11. A coating method, characterized in that, The control device applied to the coating system according to any one of claims 1-6, the method comprising: Based on the coating process parameters, predict the winding time when the material is wound up by the winding device; At the winding time, the material parameters of the material obtained from the acquisition device are stored in the film form corresponding to the material.

12. The coating method according to claim 11, characterized in that, Based on coating process parameters, predict the winding time when the material is wound by the winding device, including: Based on the driving parameters obtained from the driving device and the pre-configured distance parameters, the transmission time required for the material to be transferred from the collecting device to the winding device is predicted, wherein the distance parameters are used to indicate the distance between the collecting device and the winding device. The winding time is calculated based on the transmission duration and the acquisition time of the material parameters obtained from the acquisition device.

13. The coating method according to claim 12, characterized in that, Based on the driving parameters obtained from the driving device and the pre-configured distance parameters, the prediction of the transmission time required for the material to be transferred from the collection device to the winding device includes: Based on the rotational speed acquisition cycle and the rotational speed acquired in each rotational speed acquisition cycle, the target distance of the material being transported in each rotational speed acquisition cycle is calculated. Based on the target distance and the distance parameters, calculate the cumulative number of data collections; The transmission duration is obtained by multiplying the cumulative number of acquisitions by the rotational speed acquisition cycle.

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