Coating system and coating method

Abstract

The invention discloses a coating system and a coating method.The system comprises a statistical process control system, a manufacturing execution system and a controller; the controller is configured to generate a roll changing signal under the condition that it is detected that a winding device of the coating machine executes belt breaking operation and connects a belt to a target film roll. The statistical process control system is configured to respond to the roll changing signal, send a processing request of a film roll number to the manufacturing execution system, obtain a first film roll number of a target film roll sent by the manufacturing execution system based on the processing request, and create a first film roll list based on the first film roll number; wherein the first film roll list is used for recording production process information of the target film roll in the coating process; the manufacturing execution system is configured to determine a first film roll number of a target film roll in response to the processing request; and sending the first film roll number to the statistical process control system.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular, to a coating system and a coating method. Background Art

[0002] As the world's energy and environmental protection situation becomes increasingly tense, batteries are becoming more and more popular as a power source, and batteries are beginning to become the first choice for the development of power batteries. The coating process is a process flow in the battery production process. The battery coating process refers to the process of evenly coating the prepared slurry on the surface of the metal foil, and then drying it to make positive and negative electrodes respectively.

[0003] During the battery coating process, a film roll number is usually set for the film roll. For the same film roll, if the film roll numbers set in multiple systems set for the coating process are inconsistent, the roll material and film roll order data will be inconsistent. This will result in the inability to accurately trace the film roll in the event of an abnormality in the film roll coating process or an abnormality in the battery production process.

[0004] The above statements are only used to provide background information related to the present application and do not necessarily constitute prior art. Summary of the invention

[0005] The embodiments of the present application at least provide a coating system and a coating method, which can alleviate the problem of being unable to accurately track and locate the film roll due to inconsistent film roll numbers set in multiple systems involved in the battery coating process.

[0006] In a first aspect, an embodiment of the present application provides 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-changing signal when detecting that the winding device of the coating machine performs a tape-breaking 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, send a processing request for a film roll number to the manufacturing execution system, obtain a first film roll number of a target film roll sent by the manufacturing execution system based on the processing request, and create a first film roll list based on the first film roll number; wherein the first film roll list is used to record production process information of the target film roll during the coating process;

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

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

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

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

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

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

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

[0016] Through the above processing method, it is possible to automatically generate a roll change signal and automatically store the roll change signal so that the statistical process control system can successfully obtain the roll change signal, thereby shortening the creation time of the film roll list, meeting the coating process scenarios with high real-time requirements, and improving the consistency between the production process information and the film roll in the film roll list.

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

[0018] The first storage data in the first storage address is read at a preset time interval; wherein the storage time length of the first storage data in the first storage address is greater than the preset time interval.

[0019] By setting the storage time length of the first storage data in the first storage address, the problem of repeatedly sending processing requests to the manufacturing execution system due to repeated reading of the roll change signal can be alleviated. By setting the preset time interval to be shorter than the storage time length of the first storage 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 comprises: a detection device;

[0021] The detection device 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 obtain the production process information of the target film roll returned by the detection device based on the data transmission signal; when it is detected that the first film roll list has not been created, the production process information is stored in the target cache space; and when it is detected that the first film roll list has been created, the production process information cached in the target cache space is stored in the first film roll list.

[0023] In the above implementation, when it is detected that the first film roll order has not been created, 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 film roll order.

[0024] In some embodiments, the detection equipment includes: an areal density meter and a size measurement system;

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

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

[0027] Through the above processing method, the production process information of the target film roll during the coating process can be obtained in real time, thereby realizing automatic storage of the production process information, improving the degree of automation of the entire process, saving labor costs, and reducing errors caused by human operations.

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

[0029] determining a requested quantity for the first film roll number;

[0030] The processing request is generated based on the request quantity.

[0031] By setting the request quantity of the first film roll number, it is possible to request at least one first film roll number from the manufacturing execution system each time, thereby improving the flexibility of requesting the first film roll number to meet different production requirements.

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

[0033] Parsing the processing request, obtaining the number of the requested film roll numbers, and obtaining the requested quantity;

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

[0035] By setting the request quantity of the first film roll number, it is possible to request at least one first film roll number from the manufacturing execution system each time, thereby improving the flexibility of requesting the first film roll number to meet different production requirements.

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

[0037] determining, in the processing request, attribute information of the coating machine and coating attributes of the target film roll;

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

[0039] Through the above processing method, the attribute information of the coating machine and the coating attribute of the target film roll can be more intuitively reflected through the film roll number, which can speed up the tracing speed of the film roll and improve the success rate of the film roll tracing.

[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 includes a finished coated surface, and 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 finished coated surface, and the substrate to be coated is a substrate that is connected to the target film roll and needs to be coated;

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

[0043] Through the above processing method, the film roll list generated during the coating process on each coating surface of the substrate can be associated, thereby realizing the association of production process information, and the film roll can be traced quickly and accurately during the production process of the battery.

[0044] In a second aspect, an embodiment of the present application provides a coating method, which is applied to a statistical process control system of a coating machine, and the method comprises:

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

[0046] 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 list based on the first film roll number; wherein the first film roll list is used to record the production process information of the target film roll during the coating process.

[0047] The technical solution of the embodiment of the present application, in the above processing, does not require manual input of the film roll number, nor does it require the creation of a film roll list based on the manually input film roll number. By responding to the roll change signal, the first film roll number is automatically obtained from the manufacturing execution system of the coating machine, and the acquisition process of the first film roll number and the creation process of the first film roll list can be automatically completed, thereby improving the automation of the entire process, saving labor costs, and at the same time improving the consistency of the first film roll list and the roll material, and reducing errors caused by human operation.

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

[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 successfully reads the roll change signal.

[0050] In the above embodiment, by sending data update information to the controller of the coating machine to prompt the controller to modify the first data to the second data according to the data update information, the roll change signal can be updated in time, 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 comprises:

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

[0053] In the above embodiment, 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 the production process information of the target film roll corresponding to the first film roll list, thereby improving the consistency between the production process information in the first film roll list and the target film roll.

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

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

[0056] When it is detected that the first film roll order has not been created, the production process information is stored in the target cache space; and when it is detected that the first film roll order has been created, the production process information cached in the target cache space is stored in the first film roll order.

[0057] In the above implementation, when it is detected that the first film roll order has not been created, 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 film roll order.

[0058] In some embodiments, the sending of a processing request for a film roll number to a manufacturing execution system of the coating machine comprises:

[0059] In the case where it is determined that the substrate to be coated includes a completed coated surface, a second film roll number is determined; wherein the second film roll number is a film roll number obtained during the coating process of the completed coated surface, and the substrate to be coated is a substrate that is connected to the target film roll and needs to be coated;

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

[0061] Through the above processing method, the film roll list generated during the coating process on each coating surface of the substrate can be associated, thereby realizing the association of production process information, and the film roll can be traced quickly and accurately during the production process of the battery.

[0062] In a third aspect, the present application provides a coating method, which is applied to a manufacturing execution system of a coating machine, and the method comprises:

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

[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 list of the target film roll, and the first film roll list is used to record the production process information of the target film roll during the coating process.

[0065] The technical solution of the embodiment of the present application can generate the first film roll number of the target film roll after detecting the processing request of the 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; wherein the first film roll number is used to create the first film roll list of the target film roll, and the first film roll list is used to record the production process information of the target film roll during the coating process. In the above processing, there is no need to manually input the film roll number, nor to create a film roll list based on the manually input film roll number. By responding to the processing request of the film roll number sent by the statistical process control system, generating the first film roll number of 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, and the creation process of the first film roll list can be automatically completed, thereby improving the degree of automation of the entire process and saving labor costs. At the same time, it can improve the consistency of the first film roll list and the roll material, and reduce errors caused by human operation.

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

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

[0068] An association relationship between the first film roll number and the second film roll number is established.

[0069] Through the above processing method, the film roll list generated during the coating process on each coating surface of the substrate can be associated, thereby realizing the association of production process information, and the film roll can be traced quickly and accurately during the production process of the battery.

[0070] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0071] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present application and are used together with the specification to illustrate the technical solutions of the present application. It should be understood that the following drawings only illustrate certain embodiments of the present application and should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can also be obtained based on these drawings without creative work.

[0072] Figure 1 The present invention is a schematic diagram of the structure of a coating system provided according to one or more embodiments.

[0073] Figure 2 The figure is a schematic diagram of the structure of a single-layer coating machine provided according to one or more embodiments.

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

[0075] Figure 4 FIG. 1 is a schematic diagram of pole piece dimension data provided according to one or more embodiments.

[0076] Figure 5 A schematic diagram of the structure of another coating system provided according to one or more embodiments.

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

[0078] Figure 7 The present invention is a schematic flow chart of a coating method according to one or more embodiments.

[0079] Figure 8 The present invention is a schematic flow chart of another coating method according to one or more embodiments.

[0080] Fig. 9 is a schematic flow chart of yet another coating method according to one or more embodiments. DETAILED DESCRIPTION

[0081] The following embodiments of the technical solution of the present application are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0082] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0083] In the description of the embodiments of the present application, the technical terms "first", "second", etc. are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two (including two), unless otherwise clearly and specifically defined.

[0084] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0085] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0086] Among all the production links of batteries, the coating process is a process flow in the battery production process. The battery coating process refers to coating the prepared slurry evenly on the surface of the metal foil, and then drying it to make the positive and negative electrodes respectively.

[0087] Specifically, the substrate can be placed on the unwinding device, and after the substrate is automatically corrected, it enters the coating head. The coating head can apply the coating slurry to the substrate according to the set program of the coating system. The wet electrode after coating enters the coating oven and is dried by hot air. The tension of the dried electrode is adjusted by the tension swing roller, and the winding speed of the winding device is controlled at the same time, so that the winding speed is synchronized with the coating speed. The electrode after drying is automatically corrected by the correction system to keep it in the center position, and the winding device performs the winding operation.

[0088] Before coating the substrate, a corresponding number can usually be set for the substrate. Then, before coating the substrate, the number can be manually input into the control system of the coating machine, and then a coating sheet is set for the substrate through the control system, and the film roll data during the battery coating process is recorded through the coating sheet. During the coating process of the substrate, an electronic tag can also be generated for the substrate by manually inputting the number, and the electronic tag is set on the film roll of the substrate after coating, wherein the label content of the electronic tag is recorded as the number of the above-mentioned substrate.

[0089] If the number set for the substrate and the label content of the electronic tag are different, the substrate cannot be accurately traced during the battery production process. When an abnormality occurs during the film roll coating process or an abnormality occurs during the battery production process, the substrate cannot be tracked and located in time.

[0090] Based on the above research, an embodiment of the present application discloses a coating system, in which a controller generates a roll change signal when it detects that the winding device of the coating machine performs a tape breaking operation and connects the tape to the target film roll; 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 list 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 list.

[0091] In this embodiment, the film roll number can be automatically generated through the interactive operation between the controller, the statistical process control system and the manufacturing execution system. This processing method does not require manual input of the film roll number, nor does it require the creation of a film roll list based on the manually input film roll number. By responding to the roll change signal and automatically obtaining the first film roll number from the manufacturing execution system of the coating machine, the acquisition process of the first film roll number can be automatically completed, thereby improving the automation of the entire process, saving labor costs, and at the same time improving the consistency of 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 the embodiment of the present application can be applied to process any film roll of the target film roll. The battery in the embodiment of the present application can be a lithium ion battery, a lithium metal battery, etc., such as a lithium cobalt oxide battery, a lithium manganese oxide battery, a nickel cobalt manganese oxide battery, a nickel cobalt aluminum oxide battery, a lithium iron phosphate battery, a lithium titanate battery, a lithium sulfur battery, etc. Alternatively, the battery in the embodiment of the present application includes but is not limited to batteries of other material systems, such as lead-acid batteries, nickel-cathode batteries, nickel-hydrogen batteries, or sodium-ion batteries.

[0093] For ease of description, the specific processing process of the embodiment of the present application is described in detail below by taking the devices involved including a statistical process control system, a manufacturing execution system and a controller as an example.

[0094] See also Figure 1 An embodiment of the present application provides a coating system, the coating system 10 including: a statistical process control system 11, a manufacturing execution system 12 and a controller 13 of a coating machine.

[0095] The controller 13 is configured to generate a roll-changing signal when detecting that the winding device of the coating machine performs a tape-breaking operation and connects the tape to the target film roll;

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

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

[0098] Among them, the Statistical Process Control (SPC) system may include but is not limited to equipment for statistical analysis and evaluation of the production process of the coating machine, and the Manufacturing Execution System may include but is not limited to equipment for maintaining the film roll numbering and film roll list of the coating machine. Here, the Statistical Process Control System and the Manufacturing Execution System may be different system modules in the same device; or, the Statistical Process Control System and the Manufacturing Execution System may be different system modules in different devices. The connection relationship between the Statistical Process Control System and the Manufacturing Execution System may be a wired connection or a wireless connection, etc.

[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 for communication; wherein, each coating machine can be correspondingly provided with a 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 for communication.

[0100] In the embodiment of the present application, the coating machine includes a coating machine controller, a coating machine unwinding device, a coating die head, a coating oven, a coating machine winding device, etc. 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. Figure 2 The structure diagram of a single-layer coating machine is shown in FIG. Figure 3 Shown is a schematic diagram of the structure of a double-layer coating machine.

[0102] like Figure 2 As shown, the single-layer coating machine comprises a coating machine unwinding device 21, a single-sided coating die head 22, a coating oven 23, a tension swing roller 24, a cutting device 25 and a coating machine winding device 26. Figure 3 As shown, the double-layer coating machine comprises 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, two coating ovens, that is, Figure 3 The first side coating oven 34 and the second side coating oven 35, the cutting device 36 and the coating machine winding device 37. Figure 3 As shown, the double-layer coater further includes an area density meter 141 and a size measurement system 142 .

[0103] like Figure 2 and Figure 3 As shown, the substrate can be placed on the unwinding device, and the substrate enters the coating die after automatic deviation correction. The coating die can apply the coating slurry to the substrate according to the set program. The wet electrode obtained after coating enters the coating oven and is dried by hot air. The tension of the dried electrode is adjusted by the tension swing roller, and the winding speed of the winding device is controlled at the same time, so that the winding speed is synchronized with the coating speed. The dried electrode is automatically corrected by the deviation correction system to keep it in the center position, and the winding device performs the winding operation. When the coater detects that the diameter of the film roll received by the coating machine winding device reaches the set value, the coater controller generates a roll change signal. At this time, the coating machine winding device automatically breaks the belt and connects the belt to the new film roll.

[0104] After the statistical process control system detects the roll change signal of the coating machine, a processing request for the film roll number can be sent to the manufacturing execution system of the coating machine. After receiving the 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 the embodiment of the present application, the film roll number may include but is not limited to the following: location information, time information, coating surface information and indication mark, wherein the location information is used to indicate the location of the coating machine; the coating surface information is used to indicate the information of the surface coated by the coating machine; the time information is used to indicate the production date of the coating slurry and the coating date of the substrate; the indication mark is an indication mark generated according to the sending order of the processing request. Here, the film roll number is the carrier of the film roll related information, and the material can be identified and traced through the film roll number.

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

[0107] In the embodiment of the present application, the weight of the substrate can be determined by measuring the density data of the substrate. Here, the density data includes the surface density of the substrate, the surface density of the first surface, and the surface density of the first surface + the second surface. The surface density of the substrate is used to indicate the surface density of the substrate that has not been coated in the target film roll, the surface density of the first surface is used to indicate the surface density after coating one surface of the substrate, and the surface density of the first surface + the second surface is used to indicate the surface density after coating both surfaces of the substrate. Figure 4 As shown, the real-time dimension 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 offset width M5 of 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 after detecting the roll change signal, send a processing request for the film roll number to the manufacturing execution system of the coating machine; the manufacturing execution system determines a first film roll number for the target film roll in response to the processing request, 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 list based on the first film roll number, and then records the production process information of the target film roll during the coating process through the first film roll list. Through this processing process, the process of obtaining the first film roll number and the process of creating the first film roll list can be automatically completed, which improves the degree of automation of the entire process and saves labor costs. At the same time, it can improve the consistency between the first film roll list and the roll material and reduce errors caused by human operation.

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

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

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

[0112] In the embodiment of the present application, a first register for storing the roll-changing signal may be pre-set, wherein the address of the first register is the above-mentioned first storage address.

[0113] The statistical process control system of the coating machine can read the data in the first storage address as the first storage data; next, the statistical process control system can determine whether a roll change signal is detected based on the read first storage data. At this time, it can be determined whether the first storage data is the first data, wherein if it is determined that the first storage data is the first data, it can be determined that a roll change signal is detected.

[0114] Here, the first data is used to characterize that the winding device of the coating machine connects the tape to 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 changing 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 implementation, the controller of the coating machine writes the roll change signal into the first storage address, and the statistical process control system can automatically obtain the roll change signal in the first storage address, and automatically send a processing request for the film roll number to the manufacturing execution system, so that the acquisition process of the first film roll number can be automatically completed, thereby improving the automation of the entire process. By setting the statistical process control system to automatically read the first storage data in the first storage address, the creation time of the film roll list can be shortened, which can meet the coating process scenarios with high real-time requirements and improve the consistency between the production process information and the film roll in the film roll list.

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

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

[0118] In the embodiment of the present application, when it is detected that the diameter of the film roll received by the winding device of the coating machine reaches the set value, the winding device of the coating machine automatically breaks the tape and connects the tape to a new film roll through the cutting device. After the controller of the coating machine detects the automatic tape breaking operation of the cutting device, a roll change signal is generated and written to the first storage address. For example, a roll change signal "1" can be generated and the roll change signal "1" can be written to the first storage address.

[0119] Through the above processing method, it is possible to automatically generate a roll change signal and automatically store the roll change signal so that the statistical process control system can successfully obtain the roll change signal, thereby shortening the creation time of the film roll list, meeting the coating process scenarios with high real-time requirements, and improving the consistency between the production process information and the film roll in the film roll list.

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

[0121] The first stored data in the first storage address is read at a preset time interval; wherein the storage time length of the first stored data in the first storage address is greater than the preset time interval.

[0122] In an embodiment of the present application, when it is detected that the diameter of the film roll received by the winding device of the coating machine reaches the set value, the winding device of the coating machine automatically breaks the tape and connects the tape to the target film roll through the cutting device. After the controller of the coating machine detects the automatic tape breaking operation of the cutting device, a roll change signal is generated and the roll change signal is written to the first storage address. Among them, the storage time of the roll change signal in the first storage address can be set to the target time, for example, the target time can be 1 second, 2 seconds, 3 seconds, etc. Here, the storage time of the roll change signal in the first storage address can be determined according to the coating speed and real-time requirements of the coating machine.

[0123] In an embodiment of the present application, a statistical process control system can be set to refresh the data in the first storage address at a fixed time. When it is determined that the read first storage 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 set to read the first storage data in the first storage address at a preset time interval.

[0124] In order for the statistical process control system to quickly and accurately read the roll change signal from the first storage address, the storage time length of the roll change signal in the first storage address may be set to be greater than a preset time interval. For example, if the storage time length is 1 second, the preset time interval may be less than 1 second, for example, 0.8 seconds.

[0125] Since the statistical process control system periodically refreshes and reads the data in the first storage address, the problem of repeatedly sending processing requests to the manufacturing execution system due to repeated reading of the roll change signal can be alleviated by setting the storage time length of the first storage data in the first storage address. The probability of reading the roll change signal from the first storage address can be increased by setting the preset time interval to be less than the storage time length of the first storage data in the first storage address.

[0126] In some embodiments of the present application, Figure 5 As shown, the coating system further includes: a detection device 14.

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

[0128] A statistical process control system is configured to obtain production process information of a target film roll returned by a detection device based on a data transmission signal; upon detecting that the creation of a first film roll order has not been completed, the production process information is stored in a target cache space; and upon detecting that the creation of the first film roll order has been completed, the production process information cached in the target cache space is stored in the first film roll order.

[0129] In the embodiment of the present application, after acquiring the data transmission signal, the detection device 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 film roll list has been created. If it is detected that the creation is not completed, the production process information can be stored in the target cache space. The target cache space described here can be the same cache space as the cache space described in the above embodiment, or it can be a different cache space. If it is detected that the creation is completed, the production process information can be recorded in the first film roll list; at the same time, the production process information stored in the target cache space can also be recorded in the first film roll list, and the target cache space can be cleared.

[0131] In the above implementation, when it is detected that the first film roll order has not been created, 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 film roll order.

[0132] In some embodiments of the present application, Figure 6 As shown, the detection device 14 includes: an area density meter 141 and a dimension measurement system 142 .

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

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

[0135] Here, the surface density meter can be an x / β-Ray surface density meter, and the size detection system can be a CCD measurement system (Charge Coupled Device, CCD). The surface density meter and the size detection system in the detection equipment are both connected to the statistical process control system.

[0136] like Figure 6 As shown, the number of the surface densitometers can be multiple, for example, Figure 3 As shown, three surface density meters are arranged in the double-layer coating machine. These three surface density meters are arranged respectively between the unwinding device and the coating oven on the first side, between the coating oven on the first side and the coating oven on the second side, and between the coating oven on the second side and the CCD measuring system.

[0137] Here, the density data includes the surface density of the substrate, the surface density of the first surface, and the surface density of the first surface + the second surface, wherein the surface density of the substrate is used to indicate the surface density of the substrate that has not been coated in the target film roll, the surface density of the first surface is used to indicate the surface density after coating one surface of the substrate, and the surface density of the first surface + the second surface is used to indicate the surface density after coating both surfaces of the substrate. Figure 4 As shown, the real-time dimension 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 offset width M5 of the coating areas of the first surface 42 and the second surface 43 .

[0138] Through the above processing method, the production process information of the target film roll during the coating process can be obtained in real time, thereby realizing automatic storage of the production process information, improving the degree of automation of the entire process, saving labor costs, and reducing errors caused by human operations.

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

[0140] Determining a request quantity for the first film roll number; and generating a processing request based on the request quantity.

[0141] In the embodiment of the present application, the statistical process control system may determine the requested number of the first film roll number, wherein the requested number may be an integer greater than or equal to 1. For example, the statistical process control system may request a first film roll number from the manufacturing execution system, or request multiple first film roll numbers from the manufacturing execution system.

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

[0143] If the statistical process control system requests multiple first film roll numbers from the manufacturing execution system, the statistical process control system may use each first film roll number in sequence until the multiple first film roll numbers are used up, and then request the first film roll number from the manufacturing execution system again, wherein the statistical process control system uses the multiple first film roll numbers and the process can be described as follows:

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

[0145] By setting the request quantity of the first film roll number, it is possible to request at least one first film roll number from the manufacturing execution system each time, thereby improving the flexibility of requesting the first film roll number to meet different production requirements.

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

[0147] The processing request is parsed, the number of the requested film roll numbers is obtained, and the requested number is obtained; and the requested number of first film roll numbers is generated.

[0148] The statistical process control system may determine the requested quantity of the first film roll number according to the quantity threshold value preset by the user, wherein the requested quantity may be an integer greater than or equal to 1. Here, the statistical process control system may provide an input interface for the user, and receive the quantity threshold value set by the user through the input interface, and then request the first film roll number from the manufacturing execution system according to the quantity threshold value. Afterwards, the statistical process control system generates a processing request based on the requested quantity, and sends the processing request for the film roll number to the manufacturing execution system.

[0149] After acquiring the processing request, the manufacturing execution system parses each request field in the processing request, and parses the requested quantity of the first film roll number in the quantity field indicating the requested quantity. Then, the requested quantity of first film roll numbers can be generated.

[0150] By setting the request quantity of the first film roll number, it is possible to request at least one first film roll number from the manufacturing execution system each time, thereby improving the flexibility of requesting the first film roll number to meet different production requirements.

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

[0152] Determining the attribute information of the coating machine and the coating attribute of the target film roll in the processing request;

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

[0154] Here, the attribute information of the coater includes but is not limited to the base, workshop, and cathode, wherein the base and workshop are used to indicate the base and workshop where the coater is located; the cathode and cathode are used to indicate whether the coated surface of the coater is the cathode surface or the anode surface. The coating attributes of the target film roll include but are not limited to the substrate model, slurry date, and reel model; wherein the substrate model is used to indicate the model of the substrate to be coated, the slurry date is used to indicate the production date of the coating slurry and the production date of the coating process performed on the substrate, and the reel model is used to indicate the model of the reel where the target film roll is located.

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

[0156] Through the above processing method, the attribute information of the coating machine and the coating attribute of the target film roll can be more intuitively reflected through the film roll number, which can speed up the tracing speed of the film roll and improve the success rate of the film roll tracing.

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

[0158] In the embodiment of the present application, when the statistical process control system determines that the substrate to be coated includes a finished coating surface, it determines the second film roll number and sends a processing request carrying the second film roll number to the manufacturing execution system. Here, the process of the statistical process control system determining whether the substrate to be coated includes a finished coating surface is the same as the process described in the above embodiment, and will not be described in detail here.

[0159] After obtaining the processing request, the manufacturing execution system can parse each request field in the processing request, thereby parsing the second film roll number in the number field and generating the first film roll number; thereafter, an association relationship between the first film roll number and the second film roll number can be established.

[0160] Here, an association table may be pre-set, through which film roll numbers with associations may be recorded. At this time, the first film roll number and the second film roll number may be recorded in the association table, thereby establishing an association relationship between the first film roll number and the second film roll number.

[0161] Through the above processing method, the film roll list generated during the coating process on each coating surface of the substrate can be associated, thereby realizing the association of production process information, and the film roll can be traced quickly and accurately during the production process of the battery.

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

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

[0164] In the embodiment of the present application, the coating machine includes a coating machine controller, a coating machine unwinding device, a coating die head, a coating oven, a coating machine winding device, etc. Among them, 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. Figure 2 The structure diagram of a single-layer coating machine is shown in FIG. Figure 3 Shown is a schematic diagram of the structure of a double-layer coating machine.

[0166] like Figure 2 As shown in FIG. 1 , the single-layer coating machine comprises a coating machine unwinding device, a single-sided coating die head, a coating oven, a tension swing roller, a cutting device and a coating machine winding device. Figure 3 As shown, the double-layer coating machine includes a coating machine unwinding device, a double-sided coating die head (i.e., Figure 3 The first side coating die and the second side coating die in the middle), two coating ovens (i.e., Figure 3 The first side coating oven and the second side coating oven are provided in the coating machine), a tension swing roller, a cutting knife 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 the substrate enters the coating die after automatic deviation correction. The coating die can apply the coating slurry to the substrate according to the set program. The wet electrode obtained after coating enters the coating oven and is dried by hot air. The tension of the dried electrode is adjusted by the tension swing roller, and the winding speed of the winding device is controlled at the same time, so that the winding speed is synchronized with the coating speed. The dried electrode is automatically corrected by the deviation correction system to keep it in the center position, and the winding device performs the winding operation. When the coater detects that the diameter of the film roll received by the coating machine winding device reaches the set value, the coater generates a roll change signal. At this time, the coating machine winding device automatically breaks the belt and connects the belt to the new film roll.

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

[0169] In the embodiment of the present application, the statistical process control system may be an SPC (Statistical Process Control) system, and the manufacturing execution system may be an 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 list based on the first film roll number; wherein the first film roll list is used to record the production process information of the target film roll during the coating process.

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

[0172] In the embodiment of the present application, the film roll number may include but is not limited to the following: location information, time information, coating surface information and indication mark, wherein the location information is used to indicate the location of the coating machine; the coating surface information is used to indicate the information of the surface coated by the coating machine; the time information is used to indicate the production date of the coating slurry and the coating date of the substrate; the indication mark is an indication mark generated according to the sending order of the processing request. Here, the film roll number is the carrier of the film roll related information, and the material can be identified and traced through the film roll number.

[0173] After obtaining the first film roll number, the statistical process control system can create a first film roll list based on the first film roll number. Here, a film roll list template matching the coating machine can be obtained from the film roll list template library; the name of the film roll list template is determined based on the first film roll number to obtain the first film roll list. The name of the first film roll list is recorded as the first film roll number.

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

[0175] In the embodiment of the present application, the weight of the substrate can be determined by measuring the density data of the substrate. Here, the density data includes the surface density of the substrate, the surface density of the first surface, and the surface density of the first surface + the second surface. The surface density of the substrate is used to indicate the surface density of the substrate that has not been coated in the target film roll, the surface density of the first surface is used to indicate the surface density after coating one surface of the substrate, and the surface density of the first surface + the second surface is used to indicate the surface density after coating both surfaces of the substrate. Figure 4 As shown, the real-time dimension data includes the total width of the substrate, the width of the coating area, the coating interval width, the width of the blank area, and the offset width of the coating area on the first side and the second side.

[0176] The technical solution of the embodiment of the present application 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 list based on the first film roll number. In the above processing process, there is no need to manually input the film roll number, nor to create a film roll list based on the manually input film roll number. By responding to the roll change signal and automatically obtaining the first film roll number from the manufacturing execution system of the coating machine, the acquisition process of the first film roll number and the creation process of the first film roll list can be automatically completed, which improves the degree of automation of the entire process and saves labor costs. At the same time, it can improve the consistency of the first film roll list and the roll material and reduce errors caused by human operation.

[0177] In some embodiments of the present application, based on the above embodiments, the technical solution provided by the embodiments of the present application further includes 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 successfully reads the roll change signal.

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

[0180] Here, after detecting the roll change signal, the statistical process control system can send data update information to the controller of the coating machine, so as to instruct the controller to update the first data in the first storage address to the second data through the data update information. Here, the first data and the second data can be binary data, octal data, decimal data 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 obtaining 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 reaches the set value, the second data in the first storage address is updated to the first data again to indicate that the winding device of the coating machine is connected to the next film roll.

[0182] In the above embodiment, by sending data update information to the controller of the coating machine to prompt the controller to modify the first data to the second data according to the data update information, the roll change signal can be updated in time, thereby alleviating the problem of repeated sending of processing requests to the manufacturing execution system due to repeated reading of the roll change signal.

[0183] In some embodiments of the present application, based on the above embodiments, the technical solution provided by the embodiments of the present application further includes the following steps:

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

[0185] In the embodiment of the present application, after detecting the roll change signal, the statistical process control system can send a stop transmission signal to the detection device, wherein the stop transmission signal is used to instruct to stop transmitting the production process information to the statistical process control system. That is, after detecting the roll change signal, the detection device can continue to detect the substrate that is connected to the target film roll, thereby detecting and obtaining the production process information.

[0186] After obtaining the first film roll number of the target film roll sent by the manufacturing execution system based on the processing request, the statistical process control system can send a data transmission signal carrying the first film roll number to the detection device. After obtaining the data transmission signal, the detection device can transmit the production process information that has not been transmitted to the statistical process control system for recording. Here, the production process information that has not been transmitted can be understood as the production process information obtained after the substrate is detected after receiving the stop transmission signal.

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

[0188] In an embodiment of the present application, the detection equipment includes an area density meter and a size detection system, wherein the area density meter may be an x / β-Ray area density meter, and the size detection system may be a CCD measurement system.

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

[0190] In the embodiment of the present application, the number of the surface density meter can be multiple, for example, Figure 2 As shown, two surface density meters and a CCD measurement system are set in the single-layer coating machine. The two surface density meters are surface density meter 1 and surface density meter 2. The two surface density meters are respectively set between the unwinding device and the coating oven, and between the coating oven and the CCD measurement system. Figure 3 As shown, three surface density meters (surface density meter 1, surface density meter 2 and surface density meter 3) and a CCD measurement system are arranged in the double-layer coating machine. The three surface density meters are arranged respectively between the unwinding device and the coating oven on the first side, between the coating oven on the first side and the coating oven on the second side, and between the coating oven on the second side and the CCD measurement system.

[0191] In the case of multiple areal density meters, the data transmission signal can be sent to each areal density meter at the same time. Alternatively, the data transmission signal can be sent to a host computer of multiple areal density meters, and the host computer can send the data transmission signal to each areal density meter.

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

[0193] In the above embodiment, 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 the production process information of the target film roll corresponding to the first film roll list, thereby improving the consistency between the production process information in the first film roll list and the target film roll.

[0194] In some embodiments of the present application, based on the above embodiments, the technical solution provided by the embodiments of the present application further includes the following steps:

[0195] Obtain the production process information of the target film roll returned by the detection device based on the data transmission signal; when it is detected that the first film roll order has not been created, store the production process information in the target cache space; and when it is detected that the first film roll order has been created, store the production process information cached in the target cache space in the first film roll order.

[0196] In the embodiment of the present application, after acquiring the data transmission signal, the detection device 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 film roll list has been created. If it is detected that the creation is not completed, the production process information can be stored in the target cache space. The target cache space described here can be the same cache space as the cache space described in the above embodiment, or it can be a different cache space. If it is detected that the creation is completed, the production process information can be recorded in the first film roll list; at the same time, the production process information stored in the target cache space can also be recorded in the first film roll list, and the target cache space can be cleared.

[0198] In the above implementation, when it is detected that the first film roll order has not been created, 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 film roll order.

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

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

[0201] It can be seen from the above description that the coating machine includes a single-layer coating machine and a double-layer coating machine. In one coating process, the single-layer coating machine performs a coating operation on one coating surface of the substrate to be coated. Here, the coating mode of the single-layer coating machine can be set by the statistical process control system, for example, the coating mode of the single-layer coating machine is set to mode one and mode two; wherein mode one means coating the first surface of the substrate to be coated, and mode two means coating the second surface after the first surface of the substrate to be coated has been coated.

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

[0203] Here, when the coating mode of the single-layer coating machine is set to mode 2, the label scanning device set in the coating machine can be set to scan the electronic label set on the substrate to be coated, so as to obtain the second film roll number. After the coating machine detects that the winding device breaks the tape and connects the tape to the target film roll, it can generate a roll change signal and write the roll change signal in the first storage address, and at the same time, it can also write the second film roll number in the second storage address.

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

[0205] Through the above processing method, the film roll list generated during the coating process on each coating surface of the substrate can be associated, thereby realizing the association of production process information, and the film roll can be traced quickly and accurately during the production process of the battery.

[0206] See also Figure 8 The embodiment of the present application provides a coating method, wherein the method is applied to a manufacturing execution system of a coating machine, and specifically comprises the following steps:

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

[0208] When the coating machine detects that the diameter of the film roll received by the coating machine winding device reaches the set value (for example, 1.2 meters), the coating machine generates a roll change signal. At this time, the coating machine winding device automatically breaks the belt and connects the belt to a new film roll. After the statistical process control system detects the roll change signal of the coating machine, a processing request for the film roll number can be sent to the manufacturing execution system of the coating machine.

[0209] In the embodiment of the present application, the statistical process control system may be an SPC system (Statistical Process Control), and the manufacturing execution system may be an MES system. After acquiring the processing request, the manufacturing execution system responds to the processing request and determines the first film roll number of the target film roll.

[0210] In the embodiment of the present application, the film roll number may include but is not limited to the following: location information, time information, coating surface information and indication mark, wherein the location information is used to indicate the location of the coating machine; the coating surface information is used to indicate the information of the surface coated by the coating machine; the time information is used to indicate the production date of the coating slurry and the coating date of the substrate; the indication mark is an indication mark generated according to the sending order of the processing request. Here, the film roll number is the carrier of the film roll related information, and the material can be identified and traced through the film roll number.

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

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

[0213] Here, the first film roll list is used to record the production process information of the target film roll during the coating process. Among them, the production process information includes but is not limited to the production base, workshop, machine, date, formula, time and weight data and real-time size data of the substrate during the coating process of the target film roll, as well as information such as coating machine process parameters. Here, the weight data includes the weight of the substrate before coating, the weight of the substrate after the first side of the substrate is coated, and the weight of the substrate after the first side and the second side of the substrate are coated. In an embodiment of the present application, the weight of the substrate can be determined by measuring the density data of the substrate. Here, the density data includes the surface density of the substrate, the surface density of the first side, and the surface density of the first side + the second side, wherein the surface density of the substrate is used to indicate the surface density of the substrate that is not coated in the target film roll, the surface density of the first side is used to indicate the surface density after coating one side of the substrate, and the surface density of the first side + the second side is used to indicate the surface density after coating both sides of the substrate.

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

[0215] The technical solution of the embodiment of the present application can generate a first film roll number of the target film roll after detecting a processing request for the 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; wherein the first film roll number is used to create a first film roll list of the target film roll, and the first film roll list is used to record the production process information of the target film roll during the coating process. In the above processing, there is no need to manually input the film roll number, nor to create a film roll list based on the manually input film roll number. By responding to the processing request for the film roll number sent by the statistical process control system, generating the first film roll number of 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, thereby improving the degree of automation of the entire process and saving labor costs. At the same time, the consistency between the first film roll list and the film roll identification set on the film roll can be improved, and errors caused by human operation can be reduced.

[0216] In some embodiments of the present 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 a statistical process control system of a 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 a coating process is performed on a completed coated surface of a substrate to be coated, and the substrate to be coated is a substrate used to coat a target film roll; and an association relationship is established between the first film roll number and the second film roll number.

[0218] In the embodiment of the present application, when the statistical process control system determines that the substrate to be coated includes a finished coating surface, it determines the second film roll number and sends a processing request carrying the second film roll number to the manufacturing execution system. Here, the process of the statistical process control system determining whether the substrate to be coated includes a finished coating surface is the same as the process described in the above embodiment, and will not be described in detail here.

[0219] After obtaining the processing request, the manufacturing execution system can parse each request field in the processing request, thereby parsing the second film roll number in the number field and generating the first film roll number; thereafter, an association relationship between the first film roll number and the second film roll number can be established.

[0220] Here, an association table may be pre-set, through which film roll numbers with associations may be recorded. At this time, the first film roll number and the second film roll number may be recorded in the association table, thereby establishing an association relationship between the first film roll number and the second film roll number.

[0221] Through the above processing method, the film roll list generated during the coating process on each coating surface of the substrate can be associated, thereby realizing the association of production process information, and the film roll can be traced quickly and accurately during the production process of the battery.

[0222] The following is a specific example to illustrate the processing process of film roll processing in the coating process. In this specific example, the statistical process control system is the statistical process control system, the manufacturing execution system is the manufacturing execution system, the coating machine controller is the coating machine PLC, and the detection equipment includes the surface density meter and the CCD measurement system. Fig. 9 As shown in the flow chart, this specific example specifically includes the following steps.

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

[0224] When it is detected that the diameter of the film roll received by the winding device of the coating machine reaches the set value (for example, 1.2 meters), the winding device of the coating machine automatically breaks the tape and connects the tape to a new film roll through the cutting device. After the controller of the coating machine (for example, a PLC controller) detects the automatic tape breaking operation of the cutting device, a roll change signal is generated and written to the first storage address. For example, a roll change signal "1" can be generated and the roll change signal "1" can be written to the first storage address.

[0225] The statistical process control system reads the data in the first storage address as the first storage data; next, the statistical process control system can determine whether a roll change signal is detected based on the read first storage data. At this time, it can be determined whether the first storage data is the first data, wherein if it is determined that the first storage data is the first data, it can be determined that a roll change signal is detected.

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

[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, a processing request of the film roll number can be sent to the manufacturing execution system of the coating machine.

[0229] S3: The manufacturing execution system generates a first film roll number.

[0230] Here, the first film roll number may include but is not limited to the following: base + workshop + cathode and anode + slurry date + N-digit serial number, wherein the base and workshop are used to indicate the base and workshop where the coater is located; the cathode and anode are used to indicate whether the coated surface of the coater is the cathode surface or the anode surface; 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 coater sends processing requests, wherein N can be a positive integer greater than 1.

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

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

[0233] S5: The statistical process control system creates a first film roll list based on the first film roll number.

[0234] After obtaining the first film roll number, the statistical process control system can create a first film roll list based on the first film roll number. Here, a film roll list template matching the coating machine can be obtained from the film roll list template library; the name of the film roll list template is determined based on the first film roll number to obtain the first film roll list. The name of the first film roll list is recorded as the first film roll number.

[0235] Here, the first film roll list is used to record the production process information of the target film roll during the coating process. The production process information includes but is not limited to the production base, workshop, machine, date, formula, time of the target film roll, and the weight data and real-time size data of the substrate during the coating process, as well as the process parameters of the coating machine. Here, the weight data includes the weight of the substrate before coating, the weight of the substrate after the first side of the substrate is coated, and the weight of the substrate after the first side and the second side 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 surface density meter and the CCD measurement system.

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

[0239] The process described above is completed automatically by the system without the need for human intervention, which effectively alleviates the problem of incorrect input of film roll numbers due to manual misremembering, wrong pressing, accidental keyboard touching, etc., thereby improving the accuracy of film roll numbers. Since the speed of information transmission between the statistical process control system, the manufacturing execution system and the controller is relatively fast, usually at the ms level, the total time from changing the roll to completing the creation of the new film roll list and starting to record data in the film roll list is less than 1s. Compared with the prior art method of manually inputting the film roll number and then manually creating the film roll list based on the film roll number, the film roll list creation time can be shortened, the time difference is eliminated, and the consistency of the roll material and film roll list data is improved.

[0240] The above description of various embodiments tends to emphasize the differences between the various embodiments. The same or similar aspects can be referenced to each other, and for the sake of brevity, they will not be repeated herein.

[0241] Another embodiment of the present application provides an electronic device, which can be a device for processing 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-mentioned 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 specific application, a module can be implemented as hardware, firmware, software, and / or a combination thereof. In addition, different modules can share common components or even be implemented by the same components. There may or may not be clear boundaries between different modules.

[0244] The algorithm and display provided herein are not inherently related to any specific computer, virtual device or other equipment. Various general devices can also be used together with examples based on this. According to the above description, it is obvious to construct the structure required for this type of device. In addition, the application is not directed to any specific programming language yet. It should be understood that various programming languages ​​can be utilized to realize the content of the application described herein, and the description made to specific languages ​​above is for the purpose of disclosing the best mode of implementation of the application.

[0245] It should be understood that, although the steps in the flowchart of the accompanying drawings are displayed in sequence as indicated by the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least a part of the steps in the flowchart of the accompanying drawings may include multiple sub-steps or multiple stages, and these sub-steps or stages are not necessarily executed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be executed in turn or alternately with other steps or at least a part of the sub-steps or stages of other steps.

[0246] The above embodiments only express the implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached 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-changing signal when detecting that the winding device of the coating machine performs a tape-breaking operation and connects the tape to the target film roll; The statistical process control system is configured to respond to the roll change signal, send a processing request for a film roll number to the manufacturing execution system, obtain a first film roll number of a target film roll sent by the manufacturing execution system based on the processing request, and create a first film roll list based on the first film roll number; wherein the first film roll list is used to record production process information of the target film roll during the coating process; The manufacturing execution system is configured to determine a first film roll number of a target film roll in response to the processing request; and send the first film roll number to the statistical process control system.

2. The coating system according to claim 1, characterized in that: The coating system further comprises: a first register; The first register is configured to store the roll change signal; wherein the storage address of the first register is a first storage address; The statistical process control system is configured to read the first stored data in the first register, and determine that the roll change signal is detected when it is determined that the first stored data is the first data; wherein the first data is used to characterize that the winding device of the coating machine is connected to the target film roll.

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

4. The coating system according to claim 2, characterized in that: The statistical process control system is configured to: The first storage data in the first storage address is read at a preset time interval; wherein the storage time length of the first storage 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 further comprises: a detection device; The detection device is configured to detect production process information of the target film roll during the coating process; The statistical process control system is configured to obtain the production process information of the target film roll returned by the detection device based on the data transmission signal; when it is detected that the first film roll list has not been created, the production process information is stored in the target cache space; and when it is detected that the first film roll list has been created, the production process information cached in the target cache space is stored in the first film roll list.

6. The coating system according to claim 5, characterized in that: The detection equipment includes: an area density meter and a size measurement system; The surface density meter is configured to detect density data of the substrate during the coating process; The dimension measurement system is configured to detect real-time dimension 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: determining a requested quantity for the first film roll number; The processing request is generated based on the request quantity.

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

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

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 includes a finished coated surface, and 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 finished coated surface, and the substrate to be coated is a substrate that is connected to the target film roll and needs to be coated; The manufacturing execution system is configured to generate the first film roll number and establish an association relationship 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 a controller of the coating machine, sending a processing request for a film roll number to a manufacturing execution system of the coating machine; 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 list based on the first film roll number; wherein the first film roll list 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 comprises: 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 successfully reads the roll change signal.

13. The method according to claim 11 or 12, characterized in that: The method further comprises: A data transmission signal carrying the first film roll number is sent to a detection device; wherein the detection device is used to detect 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 comprises: Acquire the production process information of the target film roll returned by the detection device based on the data transmission signal; When it is detected that the first film roll order has not been created, the production process information is stored in the target cache space; and when it is detected that the first film roll order has been created, the production process information cached in the target cache space is stored in the first film roll order.

15. The method according to any one of claims 11 to 14, characterized in that The sending of a processing request for a film roll number to a manufacturing execution system of the coating machine comprises: In the case where it is determined that the substrate to be coated includes a completed coated surface, a second film roll number is determined; wherein the second film roll number is a film roll number obtained during the coating process of the completed coated surface, and the substrate to be coated is a substrate that is connected to the target film roll and needs to be coated; A processing request carrying the second film roll number is sent to the manufacturing execution system; wherein the processing request is used to request generation of the first film roll number and establish an association relationship between the first film roll number and the second film 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 film roll number processing request sent by a statistical process control system of the coating machine, generating a first film roll number of a target film roll; 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 list of the target film roll, and the first film roll list 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 comprises: In response to a film roll number processing request sent by the statistical process control system of the coating machine, the first film roll number is generated, and the second film roll number is determined; wherein the second film roll number is a film roll number generated when the coated surface of the substrate to be coated is coated, and the substrate to be coated is a substrate that is connected to the target film roll and needs to be coated; An association relationship between the first film roll number and the second film roll number is established.

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