Coating system and coating method

Abstract

This application discloses a coating system and a coating method, wherein the system includes: a statistical process control system, a manufacturing execution system, and a controller; the controller is configured to generate a roll change signal when it detects that the winding device of the coating machine performs a tape breakage operation and connects the tape to the target film roll; the statistical process control system is configured to, in response to the roll change signal, send a processing request for the film roll number to the manufacturing execution system, obtain a first film roll number of the target film roll sent by the manufacturing execution system based on the processing request, and create a first film roll order based on the first film roll number; wherein the first film roll order is used to record the production process information of the target film roll during the coating process; the manufacturing execution system is configured to, in response to the processing request, determine the first film roll number of the target film roll and send the first film roll number to the statistical process control system.

Description

Technical Field

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

[0002] With the increasingly tense global energy and environmental situation, batteries are gaining popularity as a power source, becoming the preferred choice for the development of power batteries. Coating is a process in battery production. The battery coating process involves uniformly coating a prepared slurry onto the surface of a metal foil, followed by drying to form positive and negative electrode sheets.

[0003] During the battery coating process, membrane rolls are typically assigned roll numbers. If the roll numbers are inconsistent across multiple systems used in the coating process for the same roll, inconsistencies will arise between the roll material data and the roll order data. This will prevent accurate traceability of the membrane roll in the event of anomalies during coating or battery production.

[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] This application provides at least one coating system and coating method, which can alleviate the problem of inaccurate tracking and positioning of film rolls caused by inconsistent film roll numbers set in multiple systems involved in the battery coating process.

[0006] In a first aspect, embodiments of this application provide a coating system, including: a statistical process control system, a manufacturing execution system, and a controller;

[0007] The controller is configured to generate a roll change signal when it detects that the winding device of the coating machine performs a tape breakage operation and connects the tape to the target film roll;

[0008] The statistical process control system is configured to respond to the roll change signal by sending a processing request for the film roll number to the manufacturing execution system, obtaining the first film roll number of the target film roll sent by the manufacturing execution system based on the processing request, and creating a first film roll order based on the first film roll number; wherein, the first film roll order is used to record the production process information of the target film roll during the coating process;

[0009] The manufacturing execution system is configured to, in response to the processing request, determine a first roll number of the target roll and send the first roll number to the statistical process control system.

[0010] In some embodiments, the coating system further includes: a first register;

[0011] The first register is configured to store the roll-switching signal; wherein the storage address of the first register is a first storage address;

[0012] The statistical process control system is configured to read first stored data in the first register, and, if the first stored data is determined to be first data, to determine that the roll change signal has been detected; wherein the first data is used to characterize the winding device of the coating machine receiving the target film roll.

[0013] In the above embodiments, the coating machine controller writes the roll change signal to the first storage address. The statistical process control system can automatically obtain the roll change signal from the first storage address and automatically send a processing request for the film roll number to the manufacturing execution system, thereby automatically completing the process of obtaining the first film roll number and improving the automation level of the entire process. By setting the statistical process control system to automatically read the first stored data from the first storage address, the creation time of the film roll order can be shortened, which can meet the coating process scenarios with high real-time requirements and improve the consistency between the production process information in the film roll order and the film roll.

[0014] In some embodiments, the coating system further includes: a cutting device;

[0015] The controller is configured to generate the roll change signal and write the roll change signal into the first register after detecting the automatic tape breakage operation of the cutter device.

[0016] The above processing method can automatically generate and store roll change signals, enabling the statistical process control system to successfully acquire the roll change signal. This can shorten the creation time of the film roll order, meet the requirements of coating process scenarios with high real-time requirements, and improve the consistency between production process information and film rolls in the film roll order.

[0017] In some embodiments, the statistical process control system is configured to:

[0018] Read the first stored data in the first storage address at a preset time interval; wherein the storage duration of the first stored data in the first storage address is greater than the preset time interval.

[0019] By setting the storage duration of the first stored data in the first storage address, the problem of repeatedly sending processing requests to the manufacturing execution system due to repeated readings of the roll change signal can be alleviated. By setting a preset time interval shorter than the storage duration of the first stored data in the first storage address, the probability of successfully reading the roll change signal from the first storage address can be increased.

[0020] In some embodiments, the coating system further includes: a detection device;

[0021] The detection equipment is configured to detect production process information of the target film roll during the coating process;

[0022] The statistical process control system is configured to acquire the production process information of the target membrane roll returned by the detection device based on the data transmission signal; if the first membrane roll order is not completed, store the production process information in the target cache space; and if the first membrane roll order is completed, store the production process information cached in the target cache space in the first membrane roll order.

[0023] In the above embodiments, if the first membrane roll order is not completed, more comprehensive production process information can be obtained by caching the production process information in the target cache space, thereby improving the comprehensiveness and reliability of the production process information in the first membrane roll order.

[0024] In some embodiments, the testing device includes: a areal density meter and a size measurement system;

[0025] The areal density meter is configured to detect the density data of the substrate during the coating process;

[0026] The dimensional measurement system is configured to detect real-time dimensional data of each coated surface of the substrate during the coating process.

[0027] The above processing method can acquire the production process information of the target film roll in real time during the coating process, thereby realizing the automatic storage of production process information, improving the automation level of the whole process, saving labor costs, and reducing errors caused by human operation.

[0028] In some embodiments, the statistical process control system is configured to:

[0029] Determine the number of requests for the first film roll number;

[0030] The processing request is generated based on the number of requests.

[0031] By setting the number of requests for the first film roll number, at least one first film roll number can be requested from the manufacturing execution system each time, thereby improving the flexibility of requesting the first film roll number to meet different production needs.

[0032] In some embodiments, the manufacturing execution system is configured to:

[0033] The processing request is parsed to obtain the number of requested membrane roll numbers, thus obtaining the requested quantity;

[0034] Generate the requested number of first membrane roll numbers.

[0035] By setting the number of requests for the first film roll number, at least one first film roll number can be requested from the manufacturing execution system each time, thereby improving the flexibility of requesting the first film roll number to meet different production needs.

[0036] In some embodiments, the manufacturing execution system is configured to:

[0037] The processing request determines the attribute information of the coating machine and the coating attributes of the target film roll;

[0038] Based on the attribute information of the coating machine and the coating attributes of the target film roll, a first film roll number is generated for the target film roll.

[0039] By using the above processing method, the coating machine's attribute information and the coating attributes of the target film roll can be more intuitively reflected through the film roll number, which can speed up the film roll traceability and improve the success rate of film roll traceability.

[0040] In some embodiments,

[0041] The statistical process control system is configured to determine a second film roll number when it is determined that the substrate to be coated contains a coated surface, and to send a processing request carrying the second film roll number to the manufacturing execution system; wherein, the second film roll number is the film roll number obtained during the coating process of the coated surface, and the substrate to be coated is the substrate that needs to be coated after being attached to the target film roll.

[0042] The manufacturing execution system is configured to generate the first film roll number and establish an association between the first film roll number and the second film roll number.

[0043] By using the above processing method, the film rolls generated during the coating process on each coated surface of the substrate can be associated, thereby realizing the association of production process information and enabling rapid and accurate traceability of film rolls during battery production.

[0044] Secondly, embodiments of this application provide a coating method applied to a statistical process control system of a coating machine, the method comprising:

[0045] In response to a roll change signal from the controller of the coating machine, a processing request for the film roll number is sent to the manufacturing execution system of the coating machine;

[0046] The manufacturing execution system obtains the first film roll number of the target film roll sent based on the processing request, and creates a first film roll order based on the first film roll number; wherein, the first film roll order is used to record the production process information of the target film roll during the coating process.

[0047] The technical solution of this application embodiment eliminates the need for manual input of the film roll number and the creation of a film roll order based on a manually input film roll number. By automatically obtaining the first film roll number from the manufacturing execution system of the coating machine in response to the roll change signal, the process of obtaining the first film roll number and creating the first film roll order can be completed automatically, improving the automation level of the entire process, saving labor costs, and improving the consistency between the first film roll order and the roll material, reducing errors caused by human operation.

[0048] In some embodiments, the method further includes:

[0049] In response to the roll change signal, data update information is sent to the controller of the coating machine; wherein, the data update information is used to indicate that the first data in the first storage address is updated to the second data, and the second data is used to indicate that the statistical process control system has successfully read the roll change signal.

[0050] In the above embodiments, by sending data update information to the controller of the coating machine, the controller is prompted to modify the first data to the second data according to the data update information. This enables timely updates of the roll change signal, thereby alleviating the problem of repeatedly sending processing requests to the manufacturing execution system due to repeated reading of the roll change signal.

[0051] In some embodiments, the method further includes:

[0052] A data transmission signal carrying the number of the first film roll is sent to the detection device; wherein, the detection device is used to detect the production process information of the target film roll during the coating process.

[0053] In the above embodiments, by sending a data transmission signal carrying the first film roll number to the detection device, the production process information transmitted by the detection device can be made to be the production process information of the target film roll corresponding to the first film roll order, thereby improving the consistency between the production process information in the first film roll order and the target film roll.

[0054] In some embodiments, the method further includes:

[0055] Obtain the production process information of the target film roll returned by the detection device based on the data transmission signal;

[0056] If the first membrane roll order is not completed, the production process information is stored in the target cache space; and if the first membrane roll order is completed, the production process information cached in the target cache space is stored in the first membrane roll order.

[0057] In the above embodiments, if the first membrane roll order is not completed, more comprehensive production process information can be obtained by caching the production process information in the target cache space, thereby improving the comprehensiveness and reliability of the production process information in the first membrane roll order.

[0058] In some embodiments, the processing request to send the film roll number to the manufacturing execution system of the coating machine includes:

[0059] If it is determined that the substrate to be coated includes a coated surface, a second film roll number is determined; wherein, the second film roll number is the film roll number obtained during the coating process of the coated surface, and the substrate to be coated is the substrate that needs to be coated and attached to the target film roll.

[0060] A processing request carrying the second membrane roll number is sent to the manufacturing execution system; wherein the processing request is used to request the generation of the first membrane roll number and to establish an association between the first membrane roll number and the second membrane roll number.

[0061] By using the above processing method, the film rolls generated during the coating process on each coated surface of the substrate can be associated, thereby realizing the association of production process information and enabling rapid and accurate traceability of film rolls during battery production.

[0062] Thirdly, this application provides a coating method applied to a manufacturing execution system for a coating machine, the method comprising:

[0063] In response to a processing request for the film roll number sent by the statistical process control system of the coating machine, a first film roll number for the target film roll is generated.

[0064] The first film roll number is sent to the statistical process control system; wherein, the first film roll number is used to create a first film roll order for the target film roll, and the first film roll order is used to record the production process information of the target film roll during the coating process.

[0065] The technical solution of this application embodiment can generate a first film roll number for the target film roll after detecting a processing request for a film roll number sent by the statistical process control system of the coating machine, and send the first film roll number to the statistical process control system. The first film roll number is used to create a first film roll order for the target film roll, and the first film roll order is used to record the production process information of the target film roll during the coating process. This process eliminates the need for manual input of the film roll number and the creation of a film roll order based on a manually input film roll number. By responding to the processing request for a film roll number sent by the statistical process control system, generating the first film roll number for the target film roll, and automatically returning the first film roll number to the statistical process control system, the generation process of the first film roll number and the creation process of the first film roll order can be completed automatically. This improves the automation level of the entire process, saves labor costs, and improves the consistency between the first film roll order and the roll material, reducing errors caused by human operation.

[0066] In some embodiments, the method further includes:

[0067] In response to a processing request for a film roll number sent by the statistical process control system of the coating machine, a first film roll number is generated and a second film roll number is determined; wherein, the second film roll number is a film roll number generated when coating the already coated surface of the substrate to be coated, and the substrate to be coated is the substrate that needs to be coated and is attached to the target film roll.

[0068] Establish the association between the first film roll number and the second film roll number.

[0069] By using the above processing method, the film rolls generated during the coating process on each coated surface of the substrate can be associated, thereby realizing the association of production process information and enabling rapid and accurate traceability of film rolls during battery production.

[0070] 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

[0071] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. These drawings are incorporated in and constitute a part of this specification. They illustrate embodiments conforming to this application and, together with the specification, serve to explain the technical solutions of this application. It should be understood that the following drawings only show some embodiments of this application and should not be considered as limiting the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0072] Figure 1 This is a schematic diagram of a coating system provided according to one or more embodiments.

[0073] Figure 2 This is a structural schematic diagram of a single-layer coating machine provided according to one or more embodiments.

[0074] Figure 3 This is a schematic diagram of a double-layer coating machine provided according to one or more embodiments.

[0075] Figure 4 This is a schematic diagram of electrode size data provided according to one or more embodiments.

[0076] Figure 5 This is a schematic diagram of another coating system provided according to one or more embodiments.

[0077] Figure 6 This is a schematic diagram of the structure of another coating system provided according to one or more embodiments.

[0078] Figure 7 This is a schematic flowchart of a coating method provided according to one or more embodiments.

[0079] Figure 8 This is a schematic flowchart of another coating method provided according to one or more embodiments.

[0080] Figure 9 This is a schematic flowchart of another coating method according to one or more embodiments. Detailed Implementation

[0081] 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.

[0082] 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.

[0083] 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 (including two), unless otherwise explicitly defined.

[0084] 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.

[0085] 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 three cases: A exists, A and B exist simultaneously, and B exists. In addition, the character " / " in this document generally indicates that the related objects before and after it have an "or" relationship.

[0086] In the various stages of battery production, coating is a key process. Battery coating involves uniformly applying a prepared slurry to the surface of a metal foil, followed by drying to create positive and negative electrode sheets.

[0087] Specifically, the substrate is placed in the unwinding device, and after automatic alignment, it enters the coating head. The coating head applies the coating slurry to the substrate according to the coating system's preset program. The coated wet electrode then enters the coating oven for hot air drying. After drying, the electrode's tension is adjusted by a tension roller, while the winding speed of the rewinding device is controlled to synchronize with the coating speed. The dried electrode is then automatically aligned by the alignment system to maintain its centered position before being wound up by the rewinding device.

[0088] Before coating the substrate, a corresponding number can usually be assigned to the substrate. Then, before coating, this number can be manually entered into the coating machine's control system. The control system then sets a coating sheet for the substrate, which records the film roll data during the battery coating process. During the coating process, an electronic tag can also be generated for the substrate by manually entering the number, and this electronic tag is placed on the film roll of the coated substrate. The tag content contains the substrate's number.

[0089] If the serial number assigned to the substrate and the content of the electronic tag do not match, accurate traceability of the substrate will be impossible during battery production. When an anomaly occurs during film coating or battery production, timely tracking and location of the substrate will be impossible.

[0090] Based on the above research, this application discloses a coating system. In this system, when the controller detects that the winding device of the coating machine performs a tape breakage operation and connects the tape to the target film roll, it generates a roll change signal. Then, after detecting the roll change signal, the statistical process control system sends a processing request for the film roll number to the manufacturing execution system. After receiving the processing request, the manufacturing execution system determines the first film roll number of the target film roll and sends the first film roll number to the statistical process control system. After obtaining the first film roll number, the statistical process control system can create a first film roll order based on the first film roll number, thereby recording the production process information of the target film roll during the coating process through the first film roll order.

[0091] In this embodiment, the automatic generation of film roll numbers can be achieved through the interactive operation between the controller, the statistical process control system, and the manufacturing execution system. This processing method eliminates the need for manual input of film roll numbers and the creation of film roll lists based on manually input film roll numbers. By automatically obtaining the first film roll number from the coating machine's manufacturing execution system in response to the roll change signal, the process of obtaining the first film roll number can be completed automatically, improving the automation level of the entire process, saving labor costs, and improving the consistency between the first film roll list and the film roll identification set on the film roll, reducing errors caused by human operation.

[0092] The coating method provided in this application can be applied to process any target membrane roll. The battery in this application can be a lithium-ion battery, a lithium metal battery, such as a lithium cobalt oxide battery, a lithium manganese oxide battery, a nickel-cobalt-manganese lithium oxide battery, a nickel-cobalt-aluminum lithium oxide battery, a lithium iron phosphate battery, a lithium titanate battery, a lithium-sulfur battery, etc. Alternatively, the battery in this application can include, but is not limited to, batteries with other material systems, such as lead-acid batteries, nickel-metal hydride batteries, or sodium-ion batteries.

[0093] For ease of description, the following uses the equipment involved, including statistical process control systems, manufacturing execution systems, and controllers, as examples to illustrate the specific processing procedures of the embodiments of this application.

[0094] See Figure 1 This application provides a coating system 10, which includes a statistical process control system 11, a manufacturing execution system 12, and a controller 13 for a coating machine.

[0095] Controller 13 is configured to generate a roll change signal when it detects that the winding device of the coating machine has performed a tape breakage operation and connected the tape to the target film roll;

[0096] The statistical process control system 11 is configured to respond to a roll change signal, send a processing request for the roll number to the manufacturing execution system, obtain the first roll number of the target roll sent by the manufacturing execution system based on the processing request, and create a first roll order based on the first roll number; wherein, the first roll order is used to record the production process information of the target roll during the coating process;

[0097] Manufacturing execution system 12 is configured to, in response to a processing request, determine the first roll number of the target roll and send the first roll number to the statistical process control system.

[0098] The Statistical Process Control (SPC) system can include, but is not limited to, equipment that performs statistical analysis and evaluation of the coating machine's production process, while the Manufacturing Execution System (MES) can include, but is not limited to, equipment that maintains the coating machine's roll numbering and roll sheet. Here, the SPC system and the MES can be different system modules within the same equipment; alternatively, they can be different system modules within different equipment. The connection between the SPC system and the MES can be wired or wireless.

[0099] like Figure 1 As shown, the manufacturing execution system 12 and the controller 13 of the coating machine are respectively connected to the statistical process control system 11. Each coating machine can be equipped with a corresponding statistical process control system 11 and a controller 13 of the coating machine, and each manufacturing execution system 12 can be connected to multiple statistical process control systems 11.

[0100] In this embodiment, the coating machine includes a coating machine controller, a coating machine unwinding device, a coating die, a coating oven, and a coating machine rewinding device. The coating machine controller includes, but is not limited to, a programmable logic controller (PLC) controller.

[0101] Here, the coating machine can be a single-layer coating machine or a double-layer coating machine. For example... Figure 2 The diagram shown is a structural schematic of a single-layer coating machine. Figure 3 The diagram shown is a schematic of a double-layer coating machine.

[0102] like Figure 2 As shown, the single-layer coating machine includes a coating machine unwinding device 21, a single-sided coating die head 22, a coating oven 23, a tension roller 24, a cutting device 25, and a coating machine rewinding device 26. Figure 3 As shown, the double-layer coating machine includes a coating machine unwinding device 31 and a double-sided coating die head, that is, Figure 3 The first coating die 32 and the second coating die 33, and two coating ovens, namely, Figure 3 The coating includes a first-side coating oven 34, a second-side coating oven 35, a cutting device 36, and a coating machine winding device 37. (Example) Figure 3 As shown, the double-layer coating machine also includes an areal density meter 141 and a dimensional measurement system 142.

[0103] like Figure 2 and Figure 3 As shown, the substrate can be placed on the unwinding device, and after automatic alignment, it enters the coating die. The coating die applies the coating slurry to the substrate according to a set program. The resulting wet electrode sheet enters the coating oven for hot air drying. After drying, the electrode sheet's tension is adjusted by a tension roller, which simultaneously controls the winding speed of the winding device to synchronize with the coating speed. The dried electrode sheet is automatically aligned by the alignment system to maintain its centered position, and then wound up by the winding device. When the coating machine detects that the diameter of the film roll wound by the winding device has reached the set value, the coating machine's controller generates a roll change signal. At this time, the winding device automatically breaks the tape and connects to a new film roll.

[0104] After the statistical process control system detects a roll change signal from the coating machine, it can send a processing request for the film roll number to the coating machine's manufacturing execution system. Upon receiving this processing request, the manufacturing execution system can determine the first film roll number of the target film roll and send the first film roll number to the statistical process control system.

[0105] In this embodiment, the film roll number may include, but is not limited to, the following: location information, time information, coating surface information, and indicator. The location information indicates the location of the coating machine; the coating surface information indicates the information of the surface coated by the coating machine; the time information indicates the production date of the coating slurry and the coating date of the substrate; and the indicator is an indicator generated according to the order in which processing requests are sent. Here, the film roll number is the carrier of film roll-related information, and material identification and traceability can be performed through this film roll number.

[0106] Here, the first film roll record is used to record the production process information of the target film roll during the coating process. This production process information includes, but is not limited to, the production base, workshop, machine, date, formula, time, weight data and real-time dimensional data of the substrate during the coating process, and coating machine process parameters. Here, the weight data includes the substrate weight before coating, the substrate weight after the first side of the substrate is coated, and the substrate weight after both the first and second sides of the substrate are coated.

[0107] In this embodiment, the weight of the substrate can be determined by measuring its density data. Here, the density data includes the substrate areal density, the areal density of the first side, and the areal density of the first side + the second side. The substrate areal density indicates the areal density of the uncoated substrate in the target film roll; the areal density of the first side indicates the areal density after coating one side of the substrate; and the areal density of the first side + the second side indicates the areal density after coating both sides of the substrate. Figure 4 As shown, the real-time dimensional data includes the total width M1 of the substrate 41, the width M2 of the coating area, the coating interval width M3, the width M4 of the blank area, and the misalignment width M5 between the coating areas of the first surface 42 and the second surface 43.

[0108] In these embodiments, the statistical process control system of the coating machine can detect the roll change signal of the coating machine and, upon detecting the roll change signal, send a processing request for the film roll number to the manufacturing execution system of the coating machine. In response to the processing request, the manufacturing execution system determines a first film roll number for the target film roll and sends the first film roll number to the statistical process control system. The statistical process control system obtains the first film roll number of the target film roll sent by the manufacturing execution system based on the processing request, and creates a first film roll order based on the first film roll number. This first film roll order then records the production process information of the target film roll during the coating process. This process automatically completes the acquisition of the first film roll number and the creation of the first film roll order, improving the automation level of the entire process, saving labor costs, and improving the consistency between the first film roll order and the roll material, reducing errors caused by human operation.

[0109] In some embodiments of this application, the coating system further includes a first register.

[0110] The first register is configured to store the roll-swapping signal; wherein, the storage address of the first register is the first storage address.

[0111] The statistical process control system is configured to read first stored data in a first register and, upon determining that the first stored data is first data, to determine that a roll change signal has been detected; wherein the first data is used to characterize the winding device of the coating machine receiving the target film roll.

[0112] In this embodiment of the application, a first register for storing roll-changing signals can be preset, wherein the address of the first register is the aforementioned first storage address.

[0113] The statistical process control system of the coating machine can read data from the first storage address as the first stored data. Next, the statistical process control system can determine whether a roll change signal has been detected based on the read first stored data. At this point, it can be determined whether the first stored data is the first data; if it is determined that the first stored data is the first data, then it can be determined that a roll change signal has been detected.

[0114] Here, the first data is used to characterize the winding device of the coating machine receiving the target film roll, wherein the target film roll can be the new film roll described above; that is, after the controller of the coating machine detects the automatic tape breaking operation of the cutting device, the roll change signal written to the first storage address is the first data, for example, the first data can be "1", or "01", or "001" and other data.

[0115] In the above embodiments, the coating machine controller writes the roll change signal to the first storage address. The statistical process control system can automatically obtain the roll change signal from the first storage address and automatically send a processing request for the film roll number to the manufacturing execution system, thereby automatically completing the process of obtaining the first film roll number and improving the automation level of the entire process. By setting the statistical process control system to automatically read the first stored data from the first storage address, the creation time of the film roll order can be shortened, which can meet the coating process scenarios with high real-time requirements and improve the consistency between the production process information in the film roll order and the film roll.

[0116] In some embodiments of this application, the coating system further includes a cutting device.

[0117] The controller is configured to generate a roll change signal and write the roll change signal into a first register after detecting an automatic tape breakage operation of the cutter device.

[0118] In this embodiment, when the diameter of the film roll taken up by the coating machine's winding device is detected to have reached a set value, the coating machine's winding device automatically cuts the tape and takes over a new film roll via a cutting device. After the coating machine's controller detects the automatic tape-cutting operation of the cutting device, it generates a roll-changing signal and writes this signal to a first storage address. For example, a roll-changing signal "1" can be generated and written to the first storage address.

[0119] The above processing method can automatically generate and store roll change signals, enabling the statistical process control system to successfully acquire the roll change signal. This can shorten the creation time of the film roll order, meet the requirements of coating process scenarios with high real-time requirements, and improve the consistency between production process information and film rolls in the film roll order.

[0120] In some embodiments of this application, the statistical process control system is configured to:

[0121] Read the first stored data in the first storage address at a preset time interval; wherein the storage duration of the first stored data in the first storage address is longer than the preset time interval.

[0122] In this embodiment, when the diameter of the film roll taken up by the coating machine's winding device reaches a set value, the winding device automatically cuts the tape and attaches it to the target film roll via a cutting device. After the coating machine's controller detects the automatic tape-cutting operation of the cutting device, it generates a roll-changing signal and writes this signal to a first storage address. The storage duration of the roll-changing signal in the first storage address can be set to a target duration, such as 1 second, 2 seconds, or 3 seconds. The storage duration of the roll-changing signal in the first storage address can be determined based on the coating speed and real-time requirements of the coating machine.

[0123] In this embodiment, the statistical process control system can be configured to periodically refresh and read data from the first storage address. Upon determining that the read first stored data is the first data, a processing request for the film roll number is sent to the manufacturing execution system of the coating machine. Here, the statistical process control system can be configured to read the first stored data from the first storage address at preset time intervals.

[0124] To ensure that the statistical process control system can quickly and accurately read the roll change signal from the first storage address, the storage duration of the roll change signal in the first storage address can be set to be greater than a preset time interval. For example, if the storage duration is 1 second, the preset time interval can be less than 1 second, such as 0.8 seconds.

[0125] Since the statistical process control system periodically refreshes and reads the data in the first storage address, setting the storage duration of the first stored data in the first storage address can alleviate the problem of repeatedly sending processing requests to the manufacturing execution system due to repeated readings of the roll change signal. By setting a preset time interval shorter than the storage duration of the first stored data in the first storage address, the probability of reading the roll change signal from the first storage address can be increased.

[0126] In some embodiments of this application, such as Figure 5 As shown, the coating system also includes: detection equipment 14.

[0127] The detection device 14 is configured to detect production process information of the target film roll during the coating process.

[0128] The statistical process control system is configured to acquire production process information of the target membrane roll returned by the detection equipment based on the data transmission signal; if the first membrane roll order is not completed, the production process information is stored in the target cache space; and if the first membrane roll order is completed, the production process information cached in the target cache space is stored in the first membrane roll order.

[0129] In this embodiment of the application, after the detection device acquires the data transmission signal, it can feed back the production process information that has not yet been transmitted to the statistical process control system.

[0130] After acquiring the production process information, the statistical process control system can detect whether the first membrane roll has been created. If it detects that creation has not been completed, the production process information can be stored in a target cache space. This target cache space can be the same as or different from the cache space described in the above embodiments. If it detects that creation has been completed, the production process information can be recorded in the first membrane roll; simultaneously, the production process information stored in the target cache space can be recorded in the first membrane roll, and the target cache space can be cleared.

[0131] In the above embodiments, if the first membrane roll order is not completed, more comprehensive production process information can be obtained by caching the production process information in the target cache space, thereby improving the comprehensiveness and reliability of the production process information in the first membrane roll order.

[0132] In some embodiments of this application, such as Figure 6 As shown, the testing equipment 14 includes: a surface density meter 141 and a size measurement system 142.

[0133] A surface density meter 141 is configured to detect density data of the substrate during the coating process;

[0134] The dimensional measurement system 142 is configured to detect real-time dimensional data of each coated surface of the substrate during the coating process.

[0135] Here, the areal density meter can be an x / β-Ray areal density meter, and the dimensional measurement system can be a CCD measurement system (Charge Coupled Device, CCD). Both the areal density meter and the dimensional measurement system in the testing equipment are connected to the statistical process control system.

[0136] like Figure 6 As shown, the number of areal density gauges can be multiple, for example, such as Figure 3 As shown, three areal density meters are installed in the double-layer coating machine. These three areal density meters are respectively installed between the unwinding device and the coating oven of the first side, between the coating oven of the first side and the coating oven of the second side, and between the coating oven of the second side and the CCD measurement system.

[0137] Here, density data includes substrate areal density, first surface areal density, and first surface + second surface areal density. Substrate areal density indicates the areal density of the uncoated substrate in the target film roll; first surface areal density indicates the areal density after coating one side of the substrate; and first surface + second surface areal density indicates the areal density after coating both sides of the substrate. For example... Figure 4 As shown, the real-time dimensional data includes the total width M1 of the substrate 41, the width M2 of the coating area, the coating interval width M3, the width M4 of the blank area, and the misalignment width M5 between the coating areas of the first surface 42 and the second surface 43.

[0138] The above processing method can acquire the production process information of the target film roll in real time during the coating process, thereby realizing the automatic storage of production process information, improving the automation level of the whole process, saving labor costs, and reducing errors caused by human operation.

[0139] In some embodiments of this application, the statistical process control system is configured to:

[0140] Determine the number of requests for the first membrane roll number; and generate a processing request based on the number of requests.

[0141] In this embodiment of the application, the statistical process control system can determine the number of requests for the first membrane roll number, wherein the number of requests can be an integer greater than or equal to 1. For example, the statistical process control system can request one first membrane roll number from the manufacturing execution system, or it can request multiple first membrane roll numbers from the manufacturing execution system.

[0142] Here, the requested quantity of the first membrane roll number can be determined based on a quantity threshold preset by the user. The statistical process control system can provide an input interface for the user, receive the user-set quantity threshold through this interface, and then request the first membrane roll number from the manufacturing execution system according to the quantity threshold.

[0143] If the statistical process control system requests multiple first membrane roll numbers from the manufacturing execution system, the statistical process control system can use each first membrane roll number sequentially until all the first membrane roll numbers have been used up. After that, it can request more first membrane roll numbers from the manufacturing execution system. The process of the statistical process control system using multiple first membrane roll numbers can be described as follows:

[0144] The statistical process control system creates a first film roll order B for the target film roll based on the first film roll number A. If another roll change signal is detected, it checks whether multiple first film roll numbers have been used up. If it is determined that they have not been used up, a second film roll order D is created for the target film roll based on the unused first film roll number C. If it is determined that multiple first film roll numbers have been used up, a film roll number processing request is sent to the coating machine's manufacturing execution system.

[0145] By setting the number of requests for the first film roll number, at least one first film roll number can be requested from the manufacturing execution system each time, thereby improving the flexibility of requesting the first film roll number to meet different production needs.

[0146] In some embodiments of this application, the manufacturing execution system is configured to:

[0147] The processing request is parsed to obtain the number of requested membrane roll numbers, thus obtaining the request quantity; the number of first membrane roll numbers is generated for the requested quantity.

[0148] The statistical process control system can determine the number of requests for the first membrane roll number based on a user-preset quantity threshold, where the requested quantity can be an integer greater than or equal to 1. Here, the statistical process control system can provide an input interface to the user, receive the user-set quantity threshold through this interface, and then request the first membrane roll number from the manufacturing execution system according to the quantity threshold. Subsequently, the statistical process control system generates a processing request based on the requested quantity and sends the membrane roll number processing request to the manufacturing execution system.

[0149] After receiving the processing request, the manufacturing execution system parses each request field in the request, thereby retrieving the request quantity of the first membrane roll number from the quantity field indicating the request quantity. Then, it can generate the requested quantity of first membrane roll numbers.

[0150] By setting the number of requests for the first film roll number, at least one first film roll number can be requested from the manufacturing execution system each time, thereby improving the flexibility of requesting the first film roll number to meet different production needs.

[0151] In some embodiments of this application, the manufacturing execution system is configured to:

[0152] Determine the coating machine's attribute information and the coating attributes of the target film roll during the request processing;

[0153] Based on the attribute information of the coating machine and the coating attributes of the target film roll, the first film roll number of the target film roll is generated.

[0154] Here, the coating machine's attribute information includes, but is not limited to, base, workshop, and anode / cathode. Base and workshop indicate the base and workshop where the coating machine is located; anode / cathode indicates whether the coating surface is the cathode or anode side. The coating attributes of the target film roll include, but are not limited to, substrate type, slurry date, and roll type. Substrate type indicates the type of substrate to be coated; slurry date indicates the production date of the coating slurry and the date the coating process was performed on the substrate; and roll type indicates the type of roll containing the target film roll.

[0155] Once the attribute information of the coating machine and the coating attributes of the target film roll are determined, the first film roll number of the target film roll can be generated.

[0156] By using the above processing method, the coating machine's attribute information and the coating attributes of the target film roll can be more intuitively reflected through the film roll number, which can speed up the film roll traceability and improve the success rate of film roll traceability.

[0157] In some embodiments of this application, the statistical process control system is configured to determine a second film roll number when it is determined that the substrate to be coated contains a coated surface, and to send a processing request carrying the second film roll number to the manufacturing execution system; wherein, the second film roll number is a film roll number obtained during the coating process of the coated surface, and the substrate to be coated is the substrate that needs to be coated after being attached to the target film roll; the manufacturing execution system is configured to generate a first film roll number and establish an association between the first film roll number and the second film roll number.

[0158] In this embodiment, the statistical process control system determines a second film roll number when it determines that the substrate to be coated contains a coated surface, and sends a processing request carrying the second film roll number to the manufacturing execution system. Here, the process by which the statistical process control system determines whether the substrate to be coated contains a coated surface is the same as the process described in the above embodiments, and will not be described in detail here.

[0159] After receiving the processing request, the manufacturing execution system can parse each request field in the processing request, thereby obtaining the second membrane roll number from the number field and generating the first membrane roll number; then, the association between the first membrane roll number and the second membrane roll number can be established.

[0160] Here, a relationship table can be pre-set to record membrane roll numbers that have a relationship. The first membrane roll number and the second membrane roll number can then be recorded in this relationship table, thus establishing a relationship between them.

[0161] By using the above processing method, the film rolls generated during the coating process on each coated surface of the substrate can be associated, thereby realizing the association of production process information and enabling rapid and accurate traceability of film rolls during battery production.

[0162] See Figure 7 This application provides a coating method, wherein the method is applied to the statistical process control system of a coating machine, and specifically includes the following steps:

[0163] Step 701: In response to the roll change signal from the coating machine, send a processing request for the film roll number to the manufacturing execution system of the coating machine.

[0164] In this embodiment, the coating machine includes a coating machine controller, a coating machine unwinding device, a coating die, a coating oven, and a coating machine rewinding device. The coating machine controller includes, but is not limited to, a programmable logic controller (PLC) controller.

[0165] Here, the coating machine can be a single-layer coating machine or a double-layer coating machine. For example... Figure 2 The diagram shown is a structural schematic of a single-layer coating machine. Figure 3 The diagram shown is a schematic of a double-layer coating machine.

[0166] like Figure 2 As shown, the single-layer coating machine includes a coating machine unwinding device, a single-sided coating die, a coating oven, a tension roller, a cutting device, and a coating machine rewinding device. Figure 3 As shown, the double-layer coating machine includes a coating machine unwinding device and a double-sided coating die (i.e., Figure 3 The first coating die and the second coating die), and two coating ovens (i.e., Figure 3 The equipment includes a first-side coating oven and a second-side coating oven, a tension swing roller, a cutting device, and a coating machine winding device.

[0167] like Figure 2 and Figure 3 As shown, the substrate can be placed on the unwinding device, and after automatic alignment, it enters the coating die. The coating die applies the coating slurry to the substrate according to a set program. The resulting wet electrode sheet enters the coating oven for hot air drying. After drying, the electrode sheet's tension is adjusted by a tension roller, which simultaneously controls the winding speed of the winding device, ensuring synchronization with the coating speed. The dried electrode sheet is automatically aligned by the alignment system to maintain its centered position before being wound up by the winding device. When the coating machine detects that the diameter of the film roll wound by the winding device has reached the set value, the coating machine generates a roll change signal. At this time, the winding device automatically breaks the tape and connects to a new film roll.

[0168] After the statistical process control system detects the roll change signal of the coating machine, it can send a processing request for the film roll number to the manufacturing execution system of the coating machine.

[0169] In this embodiment of the application, the statistical process control system can be an SPC (Statistical Process Control) system, and the manufacturing execution system can be a MES system.

[0170] Step 702: Obtain the first film roll number of the target film roll sent by the manufacturing execution system based on the processing request, and create a first film roll order based on the first film roll number; wherein, the first film roll order is used to record the production process information of the target film roll during the coating process.

[0171] Here, after the statistical process control system sends a processing request for the membrane roll number to the manufacturing execution system, it can obtain the feedback information from the manufacturing execution system in response to the processing request, and obtain the first membrane roll number determined by the manufacturing execution system for the target membrane roll from the feedback information.

[0172] In this embodiment, the film roll number may include, but is not limited to, the following: location information, time information, coating surface information, and indicator. The location information indicates the location of the coating machine; the coating surface information indicates the information of the surface coated by the coating machine; the time information indicates the production date of the coating slurry and the coating date of the substrate; and the indicator is an indicator generated according to the order in which processing requests are sent. Here, the film roll number is the carrier of film roll-related information, and material identification and traceability can be performed through this film roll number.

[0173] After obtaining the first film roll number, the statistical process control system can create a first film roll order based on that number. Here, a film roll order template matching the coating machine can be obtained from the film roll order template library; the name of the film roll order template is determined based on the first film roll number, thus obtaining the first film roll order. The name of the first film roll order is denoted by the first film roll number.

[0174] Here, the first film roll record is used to record the production process information of the target film roll during the coating process. This production process information includes, but is not limited to, the production base, workshop, machine, date, formula, time, weight data and real-time dimensional data of the substrate during the coating process, and coating machine process parameters. Here, the weight data includes the substrate weight before coating, the substrate weight after the first side of the substrate is coated, and the substrate weight after both the first and second sides of the substrate are coated.

[0175] In this embodiment, the weight of the substrate can be determined by measuring its density data. Here, the density data includes the substrate areal density, the areal density of the first side, and the areal density of the first side + the second side. The substrate areal density indicates the areal density of the uncoated substrate in the target film roll; the areal density of the first side indicates the areal density after coating one side of the substrate; and the areal density of the first side + the second side indicates the areal density after coating both sides of the substrate. Figure 4 As shown, the real-time dimensional data includes the total width of the substrate, the width of the coated area, the width of the coating interval, the width of the blank area, and the misalignment width between the coating areas of the first and second sides.

[0176] The technical solution of this application embodiment can send a processing request for the film roll number to the manufacturing execution system of the coating machine after detecting the roll change signal of the coating machine; and obtain the first film roll number of the target film roll sent by the manufacturing execution system based on the processing request, and then create a first film roll order based on the first film roll number. The above process does not require manual input of the film roll number, nor does it require the creation of a film roll order based on a manually input film roll number. By automatically obtaining the first film roll number from the manufacturing execution system of the coating machine in response to the roll change signal, the process of obtaining the first film roll number and creating the first film roll order can be completed automatically, improving the automation level of the entire process, saving labor costs, and improving the consistency between the first film roll order and the roll material, reducing errors caused by human operation.

[0177] In some embodiments of this application, based on the above embodiments, the technical solutions provided by the embodiments of this application further include the following steps:

[0178] In response to the roll change signal, data update information is sent to the controller of the coating machine; wherein, the data update information is used to indicate that the first data in the first storage address is updated to the second data, and the second data is used to indicate that the statistical process control system has successfully read the roll change signal.

[0179] In this embodiment, after the statistical process control system reads the first stored data from the first storage address and determines that the first stored data is the first data, it can determine that a roll change signal has been detected. At this time, the coating machine winding device has automatically cut and connected the tape to the target film roll, and wound the coated substrate into the target film roll. Before the diameter of the target film roll reaches the set value, there is no need to perform a roll change operation. At this time, the first data in the first storage address can be updated to the second data, so that the statistical process control system can successfully read the roll change signal through the second data.

[0180] Here, the statistical process control system can send data update information to the coating machine's controller after detecting a roll change signal. This data update information instructs the controller to update the first data in the first storage address to the second data. The first and second data can be binary, octal, decimal, or hexadecimal data. For example, if the first data is "1", the second data can be set to "0"; if the first data is "A", the second data can be set to "B".

[0181] After receiving the data update information, the controller of the coating machine can update the first data in the first storage address to the second data; and after determining that the diameter of the target film roll has reached the set value, it can update the second data in the first storage address to the first data again, so as to indicate that the winding device of the coating machine is connected to the next film roll.

[0182] In the above embodiments, by sending data update information to the controller of the coating machine, the controller is prompted to modify the first data to the second data according to the data update information. This enables timely updates of the roll change signal, thereby alleviating the problem of repeatedly sending processing requests to the manufacturing execution system due to repeated reading of the roll change signal.

[0183] In some embodiments of this application, based on the above embodiments, the technical solutions provided by the embodiments of this application further include the following steps:

[0184] A data transmission signal carrying the first film roll number is sent to the detection equipment; wherein, the detection equipment is used to detect the production process information of the target film roll during the coating process.

[0185] In this embodiment, after detecting the roll change signal, the statistical process control system can send a stop transmission signal to the detection device. The stop transmission signal instructs the device to stop transmitting production process information to the statistical process control system. In other words, after detecting the roll change signal, the detection device can continue to detect the substrate being fed to the target film roll, thereby obtaining the production process information.

[0186] After acquiring the first film roll number of the target film roll sent by the manufacturing execution system based on a processing request, the statistical process control system can send a data transmission signal carrying the first film roll number to the inspection equipment. Upon receiving this data transmission signal, the inspection equipment can transmit production process information that has not yet been transmitted to the statistical process control system for recording. Here, the production process information that has not yet been transmitted can be understood as the production process information obtained after inspecting the substrate following the receipt of a stop transmission signal.

[0187] After receiving a stop transmission signal, the detection equipment can store the detected production process information in its local storage space; and after receiving a data transmission signal, it can transmit the production process information to the statistical process control system. If the detection equipment's local storage space is full, it can send a transmission request to the statistical process control system to request the transmission of the production process information to the system's cache space.

[0188] In this embodiment of the application, the detection device includes a surface density meter and a size detection system, wherein the surface density meter can be an x / β-Ray surface density meter and the size detection system can be a CCD measurement system.

[0189] Here, data transmission signals carrying the first film roll number can be sent to the areal density meter and the dimensional detection system, respectively. The areal density meter is used to detect the density data of the substrate during the coating process, and the dimensional detection system is used to detect the real-time dimensional data of each coated surface of the substrate during the coating process. The density data includes the areal density of the substrate, the areal density of the first surface, and the areal density of the first surface plus the second surface, as described above. The real-time dimensional data includes the total width of the substrate, the width of the coated area, the width of the coating interval, and the width of the blank area, as described above.

[0190] In this embodiment of the application, the number of areal density gauges can be multiple, for example, such as Figure 2 As shown, a single-layer coating machine is equipped with two areal density meters and one CCD measurement system. The two areal density meters are designated as areal density meter 1 and areal density meter 2. These two areal density meters are respectively located between the unwinding device and the coating oven, and between the coating oven and the CCD measurement system. Figure 3 As shown, three areal density meters (area density meter 1, area density meter 2 and area density meter 3) and a CCD measurement system are set in the double-layer coating machine. These three area density meters are respectively set between the unwinding device and the coating oven of the first side, between the coating oven of the first side and the coating oven of the second side, and between the coating oven of the second side and the CCD measurement system.

[0191] When there are multiple areal density gauges, data transmission signals can be sent to each gauge simultaneously. Alternatively, data transmission signals can be sent to a master controller of multiple areal density gauges, which can then send the data transmission signal to each gauge.

[0192] After sending a data transmission signal to the testing equipment, the statistical process control system can obtain the testing information returned by the testing equipment based on the data transmission signal. The testing information includes the production process information of the target film roll during the coating process and the first film roll number. Next, the production process information can be stored in the first film roll sheet based on the first film roll number in the testing information.

[0193] In the above embodiments, by sending a data transmission signal carrying the first film roll number to the detection device, the production process information transmitted by the detection device can be made to be the production process information of the target film roll corresponding to the first film roll order, thereby improving the consistency between the production process information in the first film roll order and the target film roll.

[0194] In some embodiments of this application, based on the above embodiments, the technical solutions provided by the embodiments of this application further include the following steps:

[0195] The system acquires the production process information of the target membrane roll returned by the detection equipment based on the data transmission signal; if the first membrane roll order is not completed, the system stores the production process information in the target cache space; and if the first membrane roll order is completed, the system stores the production process information cached in the target cache space into the first membrane roll order.

[0196] In this embodiment of the application, after the detection device acquires the data transmission signal, it can feed back the production process information that has not yet been transmitted to the statistical process control system.

[0197] After acquiring the production process information, the statistical process control system can detect whether the first membrane roll has been created. If it detects that creation has not been completed, the production process information can be stored in a target cache space. This target cache space can be the same as or different from the cache space described in the above embodiments. If it detects that creation has been completed, the production process information can be recorded in the first membrane roll; simultaneously, the production process information stored in the target cache space can be recorded in the first membrane roll, and the target cache space can be cleared.

[0198] In the above embodiments, if the first membrane roll order is not completed, more comprehensive production process information can be obtained by caching the production process information in the target cache space, thereby improving the comprehensiveness and reliability of the production process information in the first membrane roll order.

[0199] In some embodiments of this application, sending a processing request for a film roll number to the manufacturing execution system of the coating machine specifically includes the following steps:

[0200] If it is determined that the substrate to be coated includes a coated surface, a second film roll number is determined; wherein, the second film roll number is the film roll number obtained during the coating process of the coated surface, and the substrate to be coated is the substrate that needs to be coated and is connected to the target film roll; a processing request carrying the second film roll number is sent to the manufacturing execution system; wherein, the processing request is used to request the generation of a first film roll number and to establish the association between the first film roll number and the second film roll number.

[0201] As described above, coating machines include single-layer coating machines and double-layer coating machines. In a single coating process, a single-layer coating machine performs coating operations on one surface of the substrate to be coated. Here, the coating mode of the single-layer coating machine can be set through a statistical process control system. For example, the coating mode of the single-layer coating machine can be set to Mode 1 and Mode 2; where Mode 1 indicates coating the first surface of the substrate, and Mode 2 indicates coating the second surface after the first surface of the substrate has been coated.

[0202] At this point, the statistical process control system of the single-layer coating machine can determine, based on the coating mode, whether the substrate to be coated includes a pre-coated surface; wherein, the substrate to be coated can be understood as the substrate placed on the unwinding device of the coating machine for performing the coating process. If it is determined that it includes a pre-coated surface, then the second film roll number can be determined, that is, the film roll number obtained during the coating process of the pre-coated surface.

[0203] Here, when the coating mode of the single-layer coating machine is set to mode two, the electronic tag on the substrate to be coated can be scanned by the label scanning device installed in the coating machine to obtain the second film roll number. After the coating machine detects that the winding device has broken the tape and connects the tape to the target film roll, it can generate a roll change signal and write the roll change signal into the first storage address. At the same time, it can also write the second film roll number into the second storage address.

[0204] If the statistical process control system determines that the substrate to be coated placed by the unwinding device of the coating machine includes a coated surface, and if it determines that a roll change signal has been detected based on the first stored data in the first storage address, it can continue to read the second film roll number stored in the second storage address. Then, the statistical process control system can send a processing request carrying the second film roll number to the manufacturing execution system. After receiving the processing request, the manufacturing execution system can generate the first film roll number and establish the association between the first and second film roll numbers.

[0205] By using the above processing method, the film rolls generated during the coating process on each coated surface of the substrate can be associated, thereby realizing the association of production process information and enabling rapid and accurate traceability of film rolls during battery production.

[0206] See Figure 8 This application provides a coating method, which is applied to the manufacturing execution system of a coating machine, and specifically includes the following steps:

[0207] S801: In response to the processing request for the film roll number sent by the statistical process control system of the coating machine, generate the first film roll number of the target film roll.

[0208] When the coating machine detects that the diameter of the film roll taken up by the coating machine's winding device has reached the set value (e.g., 1.2 meters), the coating machine generates a roll change signal. At this time, the coating machine's winding device automatically breaks the tape and takes over a new film roll. After the statistical process control system detects the roll change signal from the coating machine, it can send a processing request for the film roll number to the coating machine's manufacturing execution system.

[0209] In this embodiment of the application, the statistical process control system can be an SPC (Statistical Process Control) system, and the manufacturing execution system can be a MES (Manufacturing Execution System). After receiving the processing request, the manufacturing execution system responds to the processing request and determines the first membrane roll number of the target membrane roll.

[0210] In this embodiment, the film roll number may include, but is not limited to, the following: location information, time information, coating surface information, and indicator. The location information indicates the location of the coating machine; the coating surface information indicates the information of the surface coated by the coating machine; the time information indicates the production date of the coating slurry and the coating date of the substrate; and the indicator is an indicator generated according to the order in which processing requests are sent. Here, the film roll number is the carrier of film roll-related information, and material identification and traceability can be performed through this film roll number.

[0211] S802: Send the first film roll number to the statistical process control system; wherein, the first film roll number is used to create the first film roll order for the target film roll, and the first film roll order is used to record the production process information of the target film roll during the coating process.

[0212] After generating the first membrane roll number, the manufacturing execution system can send the first membrane roll number to the statistical process control system.

[0213] Here, the first film roll is used to record the production process information of the target film roll during the coating process. This production process information includes, but is not limited to, the production base, workshop, machine, date, formula, time, weight data and real-time dimensional data of the substrate during the coating process, and coating machine process parameters. Here, the weight data includes the substrate weight before coating, the substrate weight after coating the first side, and the substrate weight after coating both the first and second sides. In this embodiment, the substrate weight can be determined by measuring the substrate density data. Here, the density data includes the substrate areal density, the areal density of the first side, and the areal density of the first and second sides. The substrate areal density indicates the areal density of the uncoated substrate in the target film roll, the areal density of the first side indicates the areal density after coating one side of the substrate, and the areal density of the first and second sides indicates the areal density after coating both sides of the substrate.

[0214] Here, the first side and the second side are two opposite coated surfaces of the substrate. The first side is usually referred to as side A and the second side as side B.

[0215] The technical solution of this application embodiment can generate a first film roll number for the target film roll after detecting a processing request for film roll number sent by the statistical process control system of the coating machine, and send the first film roll number to the statistical process control system. The first film roll number is used to create a first film roll order for the target film roll, and the first film roll order is used to record the production process information of the target film roll during the coating process. This process eliminates the need for manual input of the film roll number and the creation of a film roll order based on a manually input film roll number. By responding to the processing request for film roll number sent by the statistical process control system, generating the first film roll number for the target film roll, and automatically returning the first film roll number to the statistical process control system, the generation process of the first film roll number can be automatically completed, improving the automation level of the entire process, saving labor costs, and improving the consistency of the film roll identification set on the first film roll order and the film roll, reducing errors caused by human operation.

[0216] In some embodiments of this application, based on the above embodiments, the method further includes the following steps:

[0217] In response to a processing request for a film roll number sent by the statistical process control system of the coating machine, a first film roll number is generated and a second film roll number is determined; wherein, the second film roll number is the film roll number generated when coating the already coated surface of the substrate to be coated, and the substrate to be coated is the substrate used to coat the target film roll; and an association relationship is established between the first film roll number and the second film roll number.

[0218] In this embodiment, the statistical process control system determines a second film roll number when it determines that the substrate to be coated contains a coated surface, and sends a processing request carrying the second film roll number to the manufacturing execution system. Here, the process by which the statistical process control system determines whether the substrate to be coated contains a coated surface is the same as the process described in the above embodiments, and will not be described in detail here.

[0219] After receiving the processing request, the manufacturing execution system can parse each request field in the processing request, thereby obtaining the second membrane roll number from the number field and generating the first membrane roll number; then, the association between the first membrane roll number and the second membrane roll number can be established.

[0220] Here, a relationship table can be pre-set to record membrane roll numbers that have a relationship. The first membrane roll number and the second membrane roll number can then be recorded in this relationship table, thus establishing a relationship between them.

[0221] By using the above processing method, the film rolls generated during the coating process on each coated surface of the substrate can be associated, thereby realizing the association of production process information and enabling rapid and accurate traceability of film rolls during battery production.

[0222] The following example illustrates the film roll processing procedure in the coating process. In this example, the statistical process control system (SPC), the manufacturing execution system (MAS), the coating machine controller is the coating machine PLC, and the testing equipment includes an areal density meter and a CCD measurement system. (See also...) Figure 9 The flowchart shown illustrates the specific steps involved in this particular example.

[0223] S1: After detecting a roll change signal, the statistical process control system stops recording production process information for the current film roll.

[0224] When the diameter of the film roll taken up by the coating machine's winding device reaches a set value (e.g., 1.2 meters), the winding device automatically cuts the tape using a cutting device and attaches it to a new film roll. After the coating machine's controller (e.g., a PLC controller) detects the automatic tape-cutting operation of the cutting device, it generates a roll-changing signal and writes this signal to a first memory address. For example, a roll-changing signal "1" can be generated and written to the first memory address.

[0225] The statistical process control system reads data from the first storage address as the first stored data. Next, the statistical process control system can determine whether a roll change signal has been detected based on the read first stored data. At this point, it can be determined whether the first stored data is the first data; if it is determined that the first stored data is the first data, then it can be determined that a roll change signal has been detected.

[0226] After a roll change signal is detected, a stop transmission signal can be sent to the detection equipment to instruct it to stop sending the detected production process information to the statistical process control system and to stop recording the production process information on the current film roll.

[0227] S2: The statistical process control system sends a processing request for the film roll number to the manufacturing execution system.

[0228] After the statistical process control system detects the roll change signal of the coating machine, it can send a processing request for the film roll number to the manufacturing execution system of the coating machine.

[0229] S3: The manufacturing execution system generates the first membrane roll number.

[0230] Here, the first film roll number may include, but is not limited to, the following: base + workshop + anode and cathode + slurry date + N-digit serial number, where the base and workshop are used to indicate the base and workshop where the coating machine is located; the anode and cathode are used to indicate whether the coating surface is the cathode side or the anode side; the slurry date is used to indicate the production date of the coating slurry and the date of the coating process on the substrate; the N-digit serial number is a serial number generated according to the order in which the statistical process control system of each coating machine sends processing requests, where N can be a positive integer greater than 1.

[0231] S4: The manufacturing execution system sends the first membrane roll number to the statistical process control system.

[0232] Here, after generating the first membrane roll number, the manufacturing execution system can send the first membrane roll number to the statistical process control system.

[0233] S5: The statistical process control system creates the first membrane roll order based on the first membrane roll number.

[0234] After obtaining the first film roll number, the statistical process control system can create a first film roll order based on that number. Here, a film roll order template matching the coating machine can be obtained from the film roll order template library; the name of the film roll order template is determined based on the first film roll number, thus obtaining the first film roll order. The name of the first film roll order is denoted by the first film roll number.

[0235] Here, the first film roll record is used to record the production process information of the target film roll during the coating process. This production process information includes, but is not limited to, the production base, workshop, machine, date, formula, time, weight data and real-time dimensional data of the substrate during the coating process, and coating machine process parameters. Here, the weight data includes the substrate weight before coating, the substrate weight after the first side of the substrate is coated, and the substrate weight after both the first and second sides of the substrate are coated.

[0236] S6: The statistical process control system sends a data transmission signal carrying the first film roll number to the areal density meter and the CCD measurement system.

[0237] S7: The areal density meter sends the density data of the substrate during the coating process to the statistical process control system, and the CCD measurement sends the real-time dimensional data of each coated surface of the substrate during the coating process to the statistical process control system.

[0238] S8: The statistical process control system records density data and real-time size data in the first film roll.

[0239] The process described above is completed automatically by the system without human intervention, effectively mitigating the problems of incorrect film roll number input due to human error such as misremembering, pressing the wrong key, or accidental keystrokes, thereby improving the accuracy of film roll numbering. Because the information transmission speed between the statistical process control system, manufacturing execution system, and controller is relatively fast, typically at the millisecond level, the total time from roll change to the completion of the film roll order creation and the start of data recording in the film roll order is less than 1 second. Compared to the existing technology that involves manually inputting the film roll number and then manually creating the film roll order based on that number, this shortens the film roll order creation time, eliminates the time lag, and improves the consistency between the roll material and the film roll order data.

[0240] 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.

[0241] Another embodiment of this application provides an electronic device that can be used to process film rolls in a coating process. The electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The processor executes the program to implement the coating method of any of the above embodiments.

[0242] It should be noted that:

[0243] 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.

[0244] 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.

[0245] 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.

[0246] 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: Statistical process control systems, manufacturing execution systems, and controllers; The controller is configured to generate a roll change signal when it detects that the winding device of the coating machine has performed a tape breakage operation and connected the tape to the target film roll. The statistical process control system is configured to respond to the roll change signal by sending a processing request for the film roll number to the manufacturing execution system, obtaining the first film roll number of the target film roll sent by the manufacturing execution system based on the processing request, and creating a first film roll order based on the first film roll number; wherein, the first film roll order is used to record the production process information of the target film roll during the coating process, and the film roll number is used for material identification and traceability; The manufacturing execution system is configured to, in response to the processing request, determine a first roll number of the target roll and send the first roll number to the statistical process control system.

2. The coating system according to claim 1, characterized in that, The coating system further includes: a first register; The first register is configured to store the roll-switching signal; wherein the storage address of the first register is a first storage address; The statistical process control system is configured to read first stored data in the first register, and, if the first stored data is determined to be first data, to determine that the roll change signal has been detected; wherein the first data is used to characterize the winding device of the coating machine receiving the target film roll.

3. The coating system according to claim 2, characterized in that, The coating system also includes: a cutting device; The controller is configured to generate the roll change signal and write the roll change signal into the first register after detecting the automatic tape breakage operation of the cutter device.

4. The coating system according to claim 2, characterized in that, The statistical process control system is configured to: Read the first stored data in the first storage address at a preset time interval; wherein the storage duration of the first stored data in the first storage address is greater than the preset time interval.

5. The coating system according to claim 1, characterized in that, The coating system also includes: a testing device; The detection equipment is configured to detect production process information of the target film roll during the coating process; The statistical process control system is configured to acquire the production process information of the target membrane roll returned by the detection device based on the data transmission signal; if the first membrane roll order is not completed, store the production process information in the target cache space; and if the first membrane roll order is completed, store the production process information cached in the target cache space in the first membrane roll order.

6. The coating system according to claim 5, characterized in that, The testing equipment includes: a surface density meter and a dimensional measurement system; The areal density meter is configured to detect the density data of the substrate during the coating process; The dimensional measurement system is configured to detect real-time dimensional data of each coated surface of the substrate during the coating process.

7. The coating system according to claim 1, characterized in that, The statistical process control system is configured to: Determine the number of requests for the first film roll number; The processing request is generated based on the number of requests.

8. The coating system according to claim 1, characterized in that, The manufacturing execution system is configured to: The processing request is parsed to obtain the number of requested membrane roll numbers, thus obtaining the requested quantity; Generate the requested number of first membrane roll numbers.

9. The coating system according to claim 1, characterized in that, The manufacturing execution system is configured to: The processing request determines the attribute information of the coating machine and the coating attributes of the target film roll; Based on the attribute information of the coating machine and the coating attributes of the target film roll, a first film roll number is generated for the target film roll.

10. The coating system according to claim 1, characterized in that, The statistical process control system is configured to determine a second film roll number when it is determined that the substrate to be coated contains a coated surface, and to send a processing request carrying the second film roll number to the manufacturing execution system; wherein, the second film roll number is the film roll number obtained during the coating process of the coated surface, and the substrate to be coated is the substrate that needs to be coated after being attached to the target film roll. The manufacturing execution system is configured to generate the first film roll number and establish an association between the first film roll number and the second film roll number.

11. A coating method, characterized in that, A statistical process control system applied to a coating machine, the method comprising: In response to a roll change signal from the controller of the coating machine, a processing request for a film roll number is sent to the manufacturing execution system of the coating machine. The film roll number is used for material identification and traceability. The manufacturing execution system obtains the first film roll number of the target film roll sent based on the processing request, and creates a first film roll order based on the first film roll number; wherein, the first film roll order is used to record the production process information of the target film roll during the coating process.

12. The method according to claim 11, characterized in that, The method further includes: In response to the roll change signal, data update information is sent to the controller of the coating machine; wherein the data update information is used to indicate that the first data in the first storage address is updated to the second data, and the second data is used to indicate that the statistical process control system has successfully read the roll change signal.

13. The method according to claim 11, characterized in that, The method further includes: A data transmission signal carrying the number of the first film roll is sent to the detection device; wherein, the detection device is used to detect the production process information of the target film roll during the coating process.

14. The method according to claim 13, characterized in that, The method further includes: Obtain the production process information of the target film roll returned by the detection device based on the data transmission signal; If the first membrane roll order is not completed, the production process information is stored in the target cache space; and if the first membrane roll order is completed, the production process information cached in the target cache space is stored in the first membrane roll order.

15. The method according to any one of claims 11 to 14, characterized in that, The process of sending the film roll number to the manufacturing execution system of the coating machine includes: If it is determined that the substrate to be coated includes a coated surface, a second film roll number is determined; wherein, the second film roll number is the film roll number obtained during the coating process of the coated surface, and the substrate to be coated is the substrate that needs to be coated and attached to the target film roll. A processing request carrying the second membrane roll number is sent to the manufacturing execution system; wherein the processing request is used to request the generation of the first membrane roll number and to establish an association between the first membrane roll number and the second membrane roll number.

16. A coating method, characterized in that, A manufacturing execution system applied to a coating machine, the method comprising: In response to a processing request for a film roll number sent by the statistical process control system of the coating machine, a first film roll number for the target film roll is generated, and the film roll number is used for material identification and traceability. The first film roll number is sent to the statistical process control system; wherein, the first film roll number is used to create a first film roll order for the target film roll, and the first film roll order is used to record the production process information of the target film roll during the coating process.

17. The method according to claim 16, characterized in that, The method further includes: In response to a processing request for a film roll number sent by the statistical process control system of the coating machine, a first film roll number is generated and a second film roll number is determined; wherein, the second film roll number is a film roll number generated when coating the already coated surface of the substrate to be coated, and the substrate to be coated is the substrate that needs to be coated and is attached to the target film roll. Establish the association between the first film roll number and the second film roll number.

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