Electrode slice loss detection method, electronic equipment and computer readable storage medium

Abstract

The invention discloses an electrode slice loss detection method, electronic equipment and a computer readable storage medium, and the method comprises the steps: firstly determining the interval length of an electrode slice in each preparation process in the preparation process of the electrode slice; then, according to the length of each interval and the fixed consumption length of the electrode plate in each preparation process, determining the tailing length of the electrode plate in each preparation process; and further determining loss data of electrode slice preparation according to the length of each tailing. On the premise that a production line is not transformed, the accuracy of electrode plate loss detection in the battery preparation process can be improved.

Description

Technical Field

[0001] This application relates to the field of lithium battery manufacturing technology, specifically to an electrode sheet loss detection method, electronic equipment, and computer-readable storage medium. Background Technology

[0002] The manufacturing of electrode sheets for lithium-ion batteries employs a continuous roll-to-roll production process, including multiple steps such as coating, drying, rolling, slitting, and winding. During the manufacturing process, electrode sheets inevitably suffer losses, such as those that occur during the manufacturing process itself, or abnormal losses due to manufacturing anomalies or malfunctions. The loss data from electrode sheet manufacturing affects the energy density and consistency of lithium-ion batteries, leading to increased production costs. Improving the accuracy of electrode sheet loss data detection during battery manufacturing is a key technical challenge currently being addressed by the industry. Summary of the Invention

[0003] This application provides an electrode sheet loss detection method, an electronic device, and a computer-readable storage medium, aiming to improve the detection accuracy of electrode sheet loss during battery manufacturing, so as to at least partially solve the above-mentioned technical problems.

[0004] In a first aspect, embodiments of this application provide an electrode sheet loss detection method, comprising the following steps: determining the interval length of the electrode sheet in each preparation step during the electrode sheet preparation process; determining the tail material length of the electrode sheet in each preparation step based on each interval length and the fixed consumption length of the electrode sheet in each preparation step; and determining the loss data of the electrode sheet preparation based on each tail material length.

[0005] Optionally, the fixed consumption length includes the tail length and the splicing length; determining the tail length of the electrode sheet in each of the preparation processes based on the length of each preparation interval and the fixed consumption length of the electrode sheet in each preparation process includes: determining the tail length of the second process based on the winding length of the electrode sheet in the first process, the splicing length between the first and second processes, and the unwinding length of the second process; wherein the preparation sequence of the second process is after the first process and adjacent to the first process.

[0006] Optionally, the method further includes: compensating the length of the electrode sheet in each of the preparation processes according to length compensation data to obtain the compensated length of the interval; wherein the length compensation data includes at least one of the following: installation offset data, roll tension data, and roll slip data; determining the tail length of the electrode sheet in each of the preparation processes according to the length of each interval and the fixed consumption length of the electrode sheet in each of the preparation processes includes: determining the tail length of the electrode sheet in each of the preparation processes according to the compensated length of each of the preparation processes and the fixed consumption length of the electrode sheet in each of the preparation processes.

[0007] Optionally, the method further includes: mapping sensor data into each of the interval lengths of the electrode sheet to correlate with loss data during the fabrication of the electrode sheet; wherein the sensor data includes at least one of the following: tension sensor data, thickness sensor data, and weight sensor data.

[0008] Optionally, determining the loss data of electrode sheet preparation based on the length of each tail material includes: associating the length of each tail material with the interval length to obtain the process loss of the electrode sheet in each preparation process; and obtaining the loss data of electrode sheet preparation based on the process loss of the electrode sheet in all preparation processes.

[0009] Optionally, the method further includes: determining the break length of the electrode sheet during the preparation process; and determining the loss data of the electrode sheet preparation based on the length of each tail material, including: determining the loss data of the electrode sheet preparation based on the tail material length and the break length.

[0010] Optionally, determining the band break length of the electrode sheet during the fabrication process includes: recording the band travel length of the electrode sheet at each fabrication step; when a band break signal is detected, clearing the band travel length of the target fabrication step corresponding to the band break signal, and obtaining a first set of band travel lengths for other fabrication steps; responding to a restart signal, controlling the target fabrication step to restart recording the band travel length of the electrode sheet; after a preset time, obtaining a second set of band travel lengths recorded by the other fabrication steps; and obtaining the band break length based on the first set of band travel lengths and the second set of band travel lengths.

[0011] Optionally, obtaining the broken tape length based on the first set of tape lengths and the second set of tape lengths includes: determining the first tape length value corresponding to the same manufacturing process in the first set of tape lengths and the second tape length value corresponding to the same manufacturing process in the second set of tape lengths; and obtaining the broken tape length based on the first tape length value and the second tape length value.

[0012] Optionally, the method further includes: obtaining a correction coefficient for the loss data based on the quality data during the electrode sheet preparation process; and correcting the loss data based on the correction coefficient to obtain corrected loss data.

[0013] Optionally, obtaining the correction coefficient for the loss data based on the quality data during the electrode sheet preparation process includes: determining the correction coefficient based on a first mass of the electrode sheet before preparation, a second mass of the electrode sheet after preparation, and a third mass measured per unit length of the electrode sheet.

[0014] Optionally, the method further includes: outputting the loss data of the electrode sheet fabrication according to a preset format.

[0015] Secondly, embodiments of this application also provide an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the steps in the above-described method.

[0016] Thirdly, embodiments of this application also provide a computer-readable storage medium having a computer program or instructions stored thereon, the computer program or instructions being loaded by a processor to perform the steps in the above-described method.

[0017] In summary, the electrode sheet loss detection method of this application first determines the interval length of the electrode sheet in each preparation step during the electrode sheet preparation process; then, based on the interval length and the fixed consumption length of the electrode sheet in each preparation step, the tail material length of the electrode sheet in each preparation step is determined; and finally, based on the tail material length, the loss data of electrode sheet preparation is determined. This application's embodiment calculates the electrode sheet preparation loss data based on the length data of the electrode sheet during the electrode sheet preparation process, which can solve the problems of repeated measurement, omissions, and time alignment errors across preparation steps. Without modifying the production line, it can improve the accuracy of electrode sheet loss detection during battery preparation, enable quality traceability of electrode sheet manufacturing, and improve the reliability of the electrode sheet. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1A schematic flowchart illustrating an electrode sheet loss detection method provided in an embodiment of this application; Figure 2 A flowchart illustrating sensor data unification is provided as an embodiment of this application; Figure 3 A schematic diagram of a process for anchoring tail material data ranges provided in an embodiment of this application; Figure 4 A schematic diagram of a loss data correction process provided for an embodiment of this application; Figure 5 This is a schematic flowchart of another electrode sheet loss detection method provided in an embodiment of this application. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] A lithium-ion battery consists of a positive electrode, a negative electrode, a separator, an electrolyte, and a casing. During charging, electrons on the surface of the negative electrode react with the electrolyte to generate conductive lithium ions. During discharging, electrons flow into the positive electrode through an external current. Under the influence of potential and concentration difference, lithium ions pass through the electrolyte, through the separator, and reach the positive electrode to form lithium metal compounds.

[0022] The fabrication of lithium-ion batteries involves processes such as coating, drying, rolling, slitting, and winding. In this multi-stage production process, electrode sheets experience losses, which are recorded as electrode sheet fabrication loss data. This loss data includes fixed loss data (referred to as "fixed loss") and abnormal loss data. Fixed loss data represents the inevitable electrode sheet losses that occur during fabrication, such as scrapping due to the transfer of electrode sheet rolls from the coating to winding stages, splicing during unwinding and rewinding, wrinkling during winding, tape breakage, and wrinkling of the bottom roll. Abnormal loss data represents electrode sheet losses caused by improper operation or malfunctions during fabrication, such as tape breakage, large-area coating defects leading to scrap, and misalignment leading to scrap. The loss data during electrode sheet fabrication directly affects the battery's energy density, consistency, and production cost.

[0023] The relevant technologies for detecting electrode fabrication loss data have the following shortcomings: 1. Insufficient time alignment accuracy of multi-source signals.

[0024] Related technologies can acquire data through multiple sensors and synchronize multi-dimensional signals such as thickness, areal density, tension, and weight, using timestamps as the main axis, to trigger measurement based on thresholds. However, in real industrial environments, even with precise clock synchronization, sensors at different physical locations still suffer from problems such as sampling clock drift, network transmission delays, and asynchronous data processing. For example, in scenarios without hardware time synchronization, the time difference between the weight sensor and the thickness sensor can be on the order of minutes, resulting in a positional uncertainty of nearly 100 meters.

[0025] 2. It is difficult to trace solid losses across processes.

[0026] Related technologies can map thickness or weight data to slit rolls based on cutting parameters and scanning time, thereby achieving solid loss detection. However, this method still uses "time period" as the key mapping factor and fails to solve the fundamental problem of cross-process solid loss traceability. Each process uses an independent metering system and different traceability benchmarks, which may lead to the repeated measurement of the same physical defects in different processes. Furthermore, it is difficult to accurately detect solid losses such as those from joints, tailings, and edge materials between processes, and solid loss data from each process cannot be directly compared and summarized for analysis.

[0027] 3. Insufficient reliability of multi-signal fusion.

[0028] The relevant technologies mainly employ simple logical judgments when fusing multiple signals. This method has a high false alarm rate in industrial noise environments, potentially exceeding 15%, which seriously affects the practicality of solid loss detection.

[0029] 4. Lack of system-level calibration mechanism.

[0030] Due to factors such as sensor drift, model error, and installation deviation, there is a system-level deviation between the instantaneous measurement value of the sensor and the actual solid loss data. Current technology lacks an effective system-level calibration mechanism, making it difficult to guarantee the long-term accuracy of solid loss measurements and failing to meet the requirements of accurate cost accounting and quality control.

[0031] 5. There are differences between the objectives of location tracing and fixed loss decomposition.

[0032] Related technologies can track electrode positions across different processes to achieve coordinate unification across processes. However, the detection, identification, and resolution of solid losses across processes remain a technological blind spot.

[0033] 6. Single-process or single-point inspection results are not good.

[0034] Related technologies can perform single-point weighing or sampling inspection for a single process, estimating losses based on roll thickness or sampling inspection weight. However, single-process inspection cannot be closed when crossing processes; the length or weight of the mother roll and daughter roll cannot be directly reconciled, making it difficult to locate the length range and the specific process to which it belongs. This results in low online availability and a tendency to lag.

[0035] In view of this, embodiments of this application provide an electrode sheet loss detection method, medium, and electronic device, which can overcome the uncertainty of time synchronization of multi-sensor data, realize accurate traceability across processes, and improve the detection accuracy of electrode sheet loss during battery manufacturing.

[0036] In a first aspect, embodiments of this application provide a method for detecting electrode sheet loss.

[0037] Please see Figure 1 , Figure 1 This is a schematic flowchart illustrating an electrode sheet loss detection method provided in an embodiment of this application. Figure 1 As shown, the electrode sheet loss detection method includes the following steps S110 to S130.

[0038] Step S110: Determine the interval length of the electrode sheet in each preparation process during the preparation of the electrode sheet; Step S120: Determine the tail material length of the electrode sheet in each preparation process based on the length of each interval and the fixed consumption length of the electrode sheet in each preparation process. Step S130: Determine the loss data for electrode sheet preparation based on the length of each tail material.

[0039] The electrode sheet fabrication process may include multiple steps such as coating, drying, rolling, slitting, and coiling. In this embodiment, before calculating loss data, the interval length corresponding to each fabrication step of the electrode sheet is first determined. The interval length can be calculated based on encoder data for each fabrication step. Determining the interval length corresponding to each fabrication step is equivalent to determining the encoder identifier for each step boundary.

[0040] An encoder is a position or speed sensor corresponding to each manufacturing process, used to record the length or speed of the roll material movement. Commonly used encoders include rotary encoders and displacement encoders. A rotary encoder can determine the interval length by the number of rotations and the roll circumference; a displacement encoder can determine the interval length by the encoder's displacement indicator. For example, taking a displacement encoder as an example, the interval length of a manufacturing process can be determined by the encoder position indicator at the beginning of a manufacturing process and the encoder position indicator at the end of the manufacturing process.

[0041] Fixed consumption length refers to the fixed data corresponding to a standardized event in each electrode sheet fabrication process. That is, the fixed number of electrode sheets required in that fabrication process, such as the splice length and tail length. The splice is the area where the electrode sheet rolls connect. To ensure the continuity of the electrode sheet fabrication process, a new roll is connected when the old roll is used up; this connection area is called the splice. The tail is the area where the beginning and end of the electrode sheet roll are unstable. The length of the splice or tail can vary depending on the fabrication requirements and the type of electrode sheet. Generally, the splice and tail lengths are fixed during the fabrication of the same electrode sheet, but may differ in different fabrication processes.

[0042] The tail material length of the electrode sheet in the fabrication process characterizes the length lost after each fabrication step. The tail material length of each fabrication step is related to the loss data during electrode sheet fabrication. Based on the tail material length of each fabrication step, the fixed loss data during electrode sheet fabrication can be determined.

[0043] It is understood that the embodiments of this application do not limit the method for determining the fixed consumption length. The fixed consumption length can be determined by process standards, by fixing the stroke through mechanical tool positions, or by setting the length according to a program.

[0044] This application's embodiments calculate electrode sheet manufacturing loss data based on length data during electrode sheet fabrication. Compared to traditional time-aligned calculation methods based on multi-source sensor data, by standardizing the length of the electrode sheet roll during the fabrication process, it can solve the problems of repeated measurement, omissions, and time alignment errors across fabrication steps. Without modifying the production line, it can improve the detection accuracy of electrode sheet loss during battery fabrication, enable quality traceability of electrode sheet manufacturing, and improve the reliability of the electrode sheets.

[0045] In some embodiments, the fixed consumption length includes the tail length and the splicing length; the tail length of the electrode sheet in each preparation step is determined according to the length of each interval and the fixed consumption length of the electrode sheet in each preparation step, including: determining the tail length of the second step according to the winding length of the electrode sheet in the first step, the splicing length between the first step and the second step, and the unwinding length of the second step; wherein the preparation sequence of the second step is after the first step and adjacent to the first step.

[0046] When calculating the tail band data of the electrode sheet at each preparation step, it is necessary to first determine all preparation steps in the electrode sheet preparation process, as well as the preparation sequence between each preparation step. This application's embodiments illustrate all preparation steps in the electrode sheet preparation process through the first and second steps. Provided that the preparation sequence of the first and second steps is continuous, and the first step precedes the second step, the first or second step can be any preparation step.

[0047] The tail length of the electrode sheet in the second process can be obtained by subtracting the output length of the roll from the input length of the second process. The input length of the roll in the second process can be determined by the output length of the roll in the first process preceding the second process, i.e., the winding length of the first process. Furthermore, the unwinding length of the first process can be obtained by combining the winding length of the first process with the tail length of the first set of tapes. Since there is also a splicing loss between the first and second processes, the splicing length between the first and second processes must be subtracted when calculating the tail length of the electrode sheet in the second process. For example, the unwinding length of any preparation process can be determined by the encoder identifier of that preparation process.

[0048] In some implementations, the electrode sheet fabrication process includes three steps: coating, rolling, and slitting. The length L of the electrode sheet in the rolling process is... base,roll It can be represented as: L base,roll =M1- L tail,coat - L splice,coat\toroll -L unwind,roll The length L of the base material for the electrode sheet during the cutting and rolling process. base,cut It can be represented as: L base,cut = L unwind,roll -L splice,roll\tocut - L unwind,cut - L tail,roll Where M1 represents the length of the coating master roll, i.e., the unwinding length of the electrode sheet during the coating process, and L... tail,coat L represents the tail length of the electrode sheet during the coating process. splice,coat\toroll L represents the overlap length of the electrode sheet between the coating and rolling processes. unwind,roll L represents the unwinding length of the electrode sheet during the slitting process. splice,roll\tocut L represents the length of the electrode sheet at the junction between the rolling and slitting processes. unwind,cut L represents the unwinding length of the electrode sheet during the slitting and winding process. tail,roll This indicates the tail length of the electrode sheet during the rolling process. In some implementations, if the calculated tail length of the electrode sheet is negative, the calculated tail length is set to zero, and an error message is displayed, indicating that the tail length calculation is abnormal.

[0049] For example, the encoder identifiers collected during the coating process of the electrode sheet are 1235 to 3721, and the encoder identifiers collected during the roll sizing process are 3154 to 5237. It can be understood that different preparation processes correspond to independent encoders, therefore the encoder identifiers for each preparation process are not necessarily continuous. Assuming the tail length of both the coating and roll sizing processes is 1m, the connection length between the coating and roll sizing processes is 2m, and the connection length between the roll sizing and slitting processes is 3m, the unwinding length of the coating process can be calculated as: 3721 - 1235 = 2486m, and the unwinding length of the roll sizing process is: 5237 - 3154 = 2083m. The tail length of the roll sizing process is: 2486 - 2 - 1 - 2083 = 400m. Assuming the unwinding length of the slitting process is 1879m, the tail length of the slitting process is: 2083 - 1 - 3 - 1879 = 200m.

[0050] According to the embodiments of this application, based on the input and output roll lengths of the electrode sheet in each preparation process and in combination with the preparation sequence between the preparation processes, the fixed consumption length of the electrode sheet in the preparation process can be determined, and the tail length of the electrode sheet in the preparation process can be obtained. This allows for the calculation of electrode sheet preparation loss data based on the electrode sheet length data, thereby improving the reliability and accuracy of electrode sheet loss data calculation.

[0051] In some embodiments, the electrode sheet loss detection method further includes: compensating the interval length of the electrode sheet in each preparation process according to length compensation data to obtain the compensated interval length; wherein the length compensation data includes at least one of the following: installation offset data, roll tension data, and roll slip data; determining the tail length of the electrode sheet in each preparation process according to each interval length and the fixed consumption length of the electrode sheet in each preparation process, including: determining the tail length of the electrode sheet in each preparation process according to each compensated interval length and the fixed consumption length of the electrode sheet in each preparation process.

[0052] To improve the accuracy of calculating the tail material length of the electrode sheet in each preparation process, and thus improve the accuracy of calculating the electrode sheet loss data, embodiments of this application can also compensate for the length of each interval of the electrode sheet according to the length compensation data to obtain the compensated interval length, and then determine the tail material length of each preparation process based on the compensated interval length.

[0053] The installation offset data represents the error present when acquiring the length of the electrode sheet. Offset data can be acquired by setting a reference point and calculating the geometric distance between the sensor and the reference point. Since the reference point is fixed, the sensor's installation offset data, denoted as ΔL, can be determined based on the displacement difference between each sensor and the reference point. When performing length compensation based on the installation offset data, the compensated interval data s' = s - ΔL, where s represents the interval length before compensation.

[0054] The coil tension data represents the stretching or shrinking of the electrode sheet coil during fabrication due to tension. Because of this tension, the length recorded by the length sensor deviates from the actual physical length. The coil slippage data represents the slippage of the electrode sheet coil during fabrication; slippage data also causes a deviation between the interval length and the actual length.

[0055] Compensation for coil tension or slippage data can be achieved through length mapping using methods such as speed ratios, roll maps, tension-elongation models, or fixed empirical coefficients to obtain the compensated interval length. For example, the speed ratio can be adjusted based on the ratio between the machine transmission speed and the actual speed of the coil. Roll maps can be identifiable markings on the electrode sheet coil, with length compensation achieved through the alignment of these markings. Tension-elongation models can predict the elongation of the coil based on the tension and elasticity of the electrode sheet coil material, and then compensate for the length based on the prediction. Fixed empirical data can compensate for the interval length of the electrode sheet at a fixed ratio based on historical experience.

[0056] In some embodiments, the electrode fabrication loss detection method further includes: mapping sensor data onto the length of each interval of the electrode sheet to correlate with the loss data of the electrode sheet fabrication; wherein the sensor data includes at least one of the following: tension sensor data, thickness sensor data, and weight sensor data.

[0057] Tension sensor data refers to the tension data of the coil material collected by a tension sensor, representing the tensile force during the coil material's transport process and used to determine the stability of the coil material. Thickness sensor data, such as data detected by a thickness gauge, represents the thickness change of the electrode sheet during processing and is used to monitor the processing quality of the electrode sheet. Weight sensor data, detected by a weight gauge, represents the weight change of the electrode sheet during processing and is used to monitor the processing quality and solids content of the electrode sheet.

[0058] The embodiments of this application can map sensor data collected by multiple sensors into each interval length to associate it with the loss data of electrode sheet fabrication, thereby achieving alignment of multi-sensor data.

[0059] Please see Figure 2 , Figure 2 This is a flowchart illustrating sensor data unification as provided in an embodiment of this application. Figure 2 As shown, sensor data unification includes the following steps S210 to S270.

[0060] Step S210: Acquire the data collected by multiple sensors.

[0061] Among them, multiple sensors can be tension sensors, thickness sensors, weight sensors, etc.

[0062] Step S220: Based on the length compensation data, the length of the electrode sheet in each preparation process is compensated to obtain the compensated length.

[0063] The length compensation data can be installation offset data, roll tension data, or roll slip data.

[0064] Step 230: Resample based on the interval length after electrode sheet compensation.

[0065] First, determine the standardized step size Δs of the compensated interval length s', and then resample the data on the length grid of the standardized step size.

[0066] Step S240: Construct a new data grid based on the resampled sensor data.

[0067] Step S250: Interpolation algorithm is used to interpolate the non-grid point data.

[0068] The interpolation process can be either linear interpolation or spline interpolation.

[0069] Step S260: Map the data collected by the multiple sensors to a unified length coordinate system.

[0070] After the data collected by multiple sensors is mapped to a unified length coordinate system, a multidimensional signal sequence is obtained by fusing multidimensional sensor data.

[0071] Step S270: Output the aligned multidimensional signal sequence.

[0072] This application embodiment is based on the length during the electrode sheet preparation process. Data collected by different sensors are mapped to the length. Based on the multi-sensor data, it is possible to effectively distinguish between real loss events and instantaneous interference during the preparation process, thereby reducing the false alarm rate and false negative rate of the system and improving the reliability and accuracy of detection in complex environments.

[0073] In some embodiments, determining the loss data of electrode sheet preparation based on the length of each tail material includes: associating the length of each tail material with the length of each interval to obtain the process loss of the electrode sheet in each preparation step; and obtaining the loss data of electrode sheet preparation based on the process loss of the electrode sheet in all preparation steps.

[0074] After calculating the tail material data of the electrode sheet in each preparation process, the tail material data is associated with each interval length, that is, the interval length corresponding to each tail material length is determined, and each tail material length is anchored to the corresponding interval length to determine the interval to which the tail material length belongs. Then, the process loss of the electrode sheet in each preparation process is obtained. By combining the process losses of all preparation processes, the loss data of the electrode sheet preparation process can be obtained.

[0075] When anchoring the length of the tail material within a certain interval, the tail material length can be anchored to the boundary of that interval. That is, the boundary of the manufacturing process is determined first, and then the tail material length is anchored to that boundary. This application embodiment does not limit the method for determining the boundary of the manufacturing process. For example, the boundary of the manufacturing process can be determined by encoder mileage, tape trigger signal, tension peak, etc. In some implementations, after associating the tail material length with the interval length, the length tolerance between the end point of the tail material length and the end point of the interval length is limited to 1 to 5 mm. If an end point is detected to be out of bounds, the material is truncated, an anomaly marker is generated, and an anomaly message is displayed.

[0076] Please see Figure 3 , Figure 3 This is a schematic diagram illustrating a process for anchoring tailings data ranges, provided as an embodiment of this application. For example... Figure 3 As shown, the manufacturing process still includes coating, rolling, and slitting as an example. The tailings data range anchoring includes the following steps S310 to S350.

[0077] Step S310: Determine the length of the bottom material for the electrode sheet in the rolling process and the length of the bottom material for the cutting process.

[0078] Step S320: The length of the roll-separated bottom material and the length of the cut-roll bottom material are anchored within a range.

[0079] Step S330: Anchor the length of the roll-separated bottom material to the length boundary of the roll-separated section, and anchor the length of the cut-coil bottom material to the length boundary of the cut-coil section.

[0080] In this embodiment of the application, when associating the tail material length with the interval length of each preparation process, the tail material length is anchored to the loading and rewinding boundary of that preparation process. For example, the tail material length of the roll slitting process is anchored to one side of the loading and rewinding boundary of the roll slitting process, and the tail material length of the cutting and rewinding process is anchored to one side of the loading and rewinding boundary of the cutting and rewinding process.

[0081] Step S340: Assigning the preparation process of the anchored interval length.

[0082] The length of the roll-separated material anchored at the length boundary of the roll-separation interval is marked as the roll-separation preparation process, and the length of the cut-and-roll material anchored at the length boundary of the cut-and-roll interval is marked as the cut-and-roll preparation process.

[0083] Step S350: Obtain and output standardized event log data.

[0084] In some embodiments, the electrode sheet loss detection method further includes: determining the length of the broken band during the electrode sheet preparation process; and determining the loss data of electrode sheet preparation based on the length of each tail material, including: determining the loss data of electrode sheet preparation based on the tail material length and the broken band length.

[0085] Electrode breakage refers to the separation of an electrode sheet during actual production due to factors such as product quality fluctuations, tension control mismatch, or abnormal equipment parameters. After a breakage occurs, splicing is required at the breakage point. During splicing, the irregular portion at the breakage point is trimmed to ensure the quality of the electrode sheet connection. The splicing at the breakage point will result in a breakage loss of varying length, called the breakage length, which represents abnormal loss data during the electrode sheet manufacturing process.

[0086] In this embodiment, when an electrode sheet experiences a breakage, the length of the breakage point is determined, and the electrode sheet loss data is determined by combining the breakage length with the tail material length. The resulting loss data can include the tail material length, splicing length, tail material length, and breakage length during the electrode sheet fabrication process, achieving high accuracy.

[0087] In some embodiments, determining the band break length of the electrode sheet during the fabrication process includes: recording the band travel length of the electrode sheet at each fabrication step; when a band break signal is detected, clearing the band travel length of the target fabrication step corresponding to the band break signal, and obtaining a first set of band travel lengths for other fabrication steps; responding to a restart signal, controlling the target fabrication step to restart recording the band travel length of the electrode sheet; after a preset time, obtaining a second set of band travel lengths recorded by other fabrication steps; and obtaining the band break length based on the first set of band travel lengths and the second set of band travel lengths.

[0088] To obtain accurate tape breakage length, embodiments of this application record the tape travel length of the electrode sheet at each preparation step. The tape travel length represents the length of the electrode sheet transported by the transmission system during the preparation process. This application sets up an independent length measuring device at each preparation step to continuously record the tape travel length of the electrode sheet at each step. Exemplarily, the length measuring device can be set at key locations in each preparation step, such as the coating head in the coating process, the tension roller in the slitting process, or the winding machine in each preparation step. During the electrode sheet preparation process, each length measuring device continuously records the tape travel length of the electrode sheet.

[0089] A tape breakage signal is used to indicate a tape breakage fault in the electrode sheet. The tape breakage signal can be generated by a sudden drop in tension detected by a tension sensor, or by an abnormal transmission speed in the conveyor system. Upon detecting a tape breakage signal, the fabrication process that generated the signal is designated as the target fabrication process. The recorded data from the length measuring device in the target fabrication process is cleared, marking a tape breakage fault as occurring in the target fabrication process. The first set of tape lengths recorded by the length measuring devices in all other fabrication processes besides the target fabrication process is then obtained, denoted as... Lbreak,i Where i represents the process identifier of each preparation process.

[0090] The re-trace signal indicates that the tape breakage point has been fully reconnected and the electrode sheet is being transported back on the conveyor, resuming the electrode sheet fabrication process. The length measurement equipment for the target fabrication step, which has been zeroed, responds to the re-trace signal and resumes recording the electrode sheet's trace length. In all fabrication steps other than the target fabrication step, the length measurement equipment continues to record the electrode sheet's trace length.

[0091] The preset time represents a period of time after the electrode sheet recovers from disconnection. After the preset time, the transmission of the electrode sheet stabilizes, and the length measuring device can record stable length data. For example, after the preset time, the electrode sheet may be in a stable production stage, at the end of the roll, or at a new breakpoint. After the preset time, the second set of conveyor lengths for all other preparation processes after the target preparation process is obtained again, denoted as... Lresume,i Where i represents the process identifier of each preparation process.

[0092] In this embodiment of the application, when a band break occurs during the electrode sheet fabrication process, the target fabrication process in which the band break occurs is used as a reference to determine the break point of the band break length, and then the band break length is calculated based on the band length of other fabrication processes.

[0093] In some embodiments, obtaining the broken tape length based on a first tape length set and a second tape length set includes: determining a first tape length value corresponding to the same preparation process in the first tape length set, and a second tape length value corresponding to the same preparation process in the second tape length set; wherein the first tape length value of the target preparation process is zero; and obtaining the broken tape length based on the first tape length value and the second tape length value.

[0094] The first set of conveyor lengths includes several first conveyor lengths corresponding to several preparation processes, and different first conveyor lengths are distinguished by the process identifier of the preparation process; similarly, the second set of conveyor lengths includes several second conveyor lengths corresponding to several preparation processes, and different second conveyor lengths are also distinguished by the process identifier of the preparation process.

[0095] In this embodiment of the application, when calculating the tape breakage length, the difference between the first tape travel length and the second tape travel length in the same preparation process can be used to obtain the tape breakage length calculated based on the tape travel length recorded in that preparation process. For example, during the coating process, if a tape breakage occurs at a recorded tape travel length of 1500.0 m, the coating process record is reset to zero, and the first tape travel length recorded in the first preparation process is retrieved. Lbreak The length was 1500.5m. After the tape breakage was repaired, the tape travel length for the coating process was recorded again, and the tape travel lengths for other preparation processes were continuously recorded. After the electrode sheet production reached a stable state at a preset time, the second tape travel length recorded for the first preparation process was obtained. Lresume The calculated length of the broken zone is 1498.8m. Lloss, splice = Lbreak - Lresume =1500.5m-1498.8m=1.7m.

[0096] In some implementations, embodiments of this application can also calculate the tape breakage length based on the tape travel length recorded in all other preparation processes, expressed as: Lloss,splice,i=Lbreak,i Lresume,i When calculating the breakage length based on the tape length of multiple preparation processes, the average or consistent value of the breakage length calculated for each preparation process can be used as the final calculated breakage length.

[0097] In this embodiment, when determining loss data based on the broken strip length, the broken strip length is anchored to the length coordinate interval corresponding to the moment the broken strip occurs. The starting position is the last stable length point before the broken strip, and the ending position is that point plus the broken strip length. This embodiment, by continuously recording the electrode sheet's conveying length, can calculate the broken strip fault length, thereby determining the loss data for electrode sheet fabrication based on the broken strip length and the tail material length. This improves the accuracy of loss data calculation and facilitates refined cost control of the electrode sheet.

[0098] In some embodiments, the electrode sheet loss detection method further includes: obtaining a correction coefficient for the loss data based on the quality data during the electrode sheet preparation process; and correcting the loss data based on the correction coefficient to obtain corrected loss data.

[0099] This application is based on loss detection by measuring the length of the electrode sheet. However, errors may occur due to sensor errors, deviations in tail or connector estimations, or fluctuations in the manufacturing process. Since the weight data of the electrode sheet is the same before and after the manufacturing process, this application can also form a correction coefficient based on the principle of mass conservation. The loss data calculated from the length diameter can be calibrated using this correction coefficient to avoid data deviation.

[0100] The correction factor is determined based on the quality data of the electrode sheet fabrication. It can be used to compare, calibrate, and limit the detected loss data without changing the length or range of the loss data. In some implementations, the correction factor is calculated based on the quality data generated during the electrode sheet fabrication process, or it can be obtained by adding the material weights of each fabrication step.

[0101] In some embodiments, obtaining a correction coefficient for loss data based on mass data during electrode fabrication includes: determining the correction coefficient based on a first mass of the electrode before fabrication, a second mass of the electrode after fabrication, and a third mass measured per unit length of the electrode.

[0102] The first mass refers to the total mass of all materials used in the preparation of the electrode sheet; the second mass refers to the mass of the electrode sheet after preparation; and the third mass is the mass calculated based on the unit length of the electrode sheet. It can be understood that the first and second masses are measured mass data, while the third mass is the theoretical mass of the electrode sheet calculated through testing.

[0103] Correction coefficient It can be represented as:

[0104] in, This represents the difference between the first mass and the second mass. Indicates the third mass. Indicates the limit amount, such as 0.1; To prevent the third mass from being zero, such as 0.5 kg; clip indicates truncation to avoid the correction factor being too large or too small. For example, in the case of a limiting range of [0.9, 1.1], if the calculated correction factor is 1.05, then the correction factor does not need to be adjusted, i.e., 1.05. If the calculated correction factor is greater than 1.1, then the correction factor is adjusted to 1.1. If the calculated correction factor is less than 0.9, then the correction factor is adjusted to 0.9.

[0105] In some implementations, the electrode loss detection method further includes: evaluating the corrected loss data and updating the data based on the evaluation results.

[0106] Please participate Figure 4 , Figure 4 This is a schematic diagram illustrating a loss data correction process provided in an embodiment of this application. Figure 4 As shown, loss data correction includes the following steps S410 to S490.

[0107] Step S410: Collect the total mass of input materials and the total mass of output qualified products in the preparation of electrode sheets.

[0108] Step S420: Obtain theoretical loss data based on the total mass of input materials and the total mass of output qualified products.

[0109] Step S430: Based on the length of the electrode sheet in each preparation process, obtain the detection loss data.

[0110] Step S440: Determine whether to calibrate the loss data.

[0111] If calibration is required, proceed to step S450; otherwise, wait.

[0112] Step S450: Determine the correction coefficient based on the theoretical loss data and the detected loss data.

[0113] Step S460: Obtain the corrected loss data based on the correction coefficient.

[0114] Step S470: Evaluate the corrected loss data.

[0115] If the assessment and correction are abnormal, proceed to step S480; if the assessment and correction are valid, proceed to step S490.

[0116] Step S480: Alarm correction, adjust correction coefficient.

[0117] After adjusting the correction coefficient, return to step S440 to determine whether to perform calibration.

[0118] Step S490: Update the calibration parameter database.

[0119] The calibration parameter database is calibrated, and the calibration process is fed back as historical data in step S440.

[0120] In some embodiments, electrode loss detection further includes: outputting loss data of electrode fabrication in a preset format.

[0121] The default format can be a data format that is common to all interfaces, such as: {event_id, type(tail / splice / base_roll / base_cut / loss-splice), start_m,end_m, length_m}; Wherein, event_id represents the event identifier, type represents different loss types, such as tail, splice, base roll, base cut, or loss-splice, start_m represents the starting length position, end_m represents the ending length position, and length_m represents the length range, that is, the difference between the starting length position and the ending length position.

[0122] In some implementations, loss data can be represented as a continuous interval, or it can be divided into several sub-intervals according to process experience without changing the total length.

[0123] When corrected using a correction factor, the corrected loss data can be expressed as: κ:{quantity_raw / calibrated, kappa, clip_flag}; quantity_raw represents the raw loss data, calibrated represents the calibrated loss data, kappa represents the correction coefficient, and clip_flag represents the clipping flag.

[0124] The output interface for loss data can be based on different transmission protocols, such as REST (Representational State Transfer), MQTT (Message Queuing Telemetry Transport), and OPC UA (OPC Unified Architecture).

[0125] The electrode sheet loss detection method of this application embodiment will be described below through a specific example.

[0126] Please see Figure 5 , Figure 5 This is a schematic flowchart of another electrode sheet loss detection method provided in an embodiment of this application. Figure 5 As shown, the electrode sheet loss detection method includes the following steps S510 to S550.

[0127] Step S510: During the preparation of the electrode sheet, the length of the electrode sheet in each preparation process is collected.

[0128] Step S520: Determine the fixed consumption length of the electrode sheet in each preparation process.

[0129] Fixed consumption lengths include tail belt length and splice belt length.

[0130] Step S530: Calculate the tail material length of the electrode sheet in each preparation process based on the interval length and the fixed consumption length.

[0131] Step S540: In the case of a broken electrode sheet, determine the length of the broken strip.

[0132] Step S540 is optional. If no tape breakage occurs, this step is not executed. If multiple tape breaks occur, this step is executed repeatedly.

[0133] Step S550: The length of the tail material and the length of the broken strip are anchored in intervals to obtain the loss data of the electrode sheet preparation.

[0134] Step S560: Structure the output loss data.

[0135] In some implementations, embodiments of this application may also correct loss data based on quality data.

[0136] For example, the encoder identifiers collected during the coating process are 1235 to 3721, meaning the master roll length for the coating process is 3721 - 1235 = 2486m; the encoder identifiers collected during the slitting process are 3154 to 5237, meaning the unwinding length for the slitting process is 5237 - 3154 = 2083m. Assuming the unwinding length for the cutting process is 1879m, the tail lengths for both the coating and slitting processes are 1m, the connection length between the coating and slitting processes is 2m, and the connection length between the slitting and cutting processes is 3m, the tail length for the slitting process can be calculated as: 2486 - 2 - 1 - 2083 = 400m. The tail length for the cutting process is: 2083 - 1 - 3 - 1879 = 200m.

[0137] Assuming a tape break occurs at length 1500.0 recorded in the coating process, clear the coating process record and obtain the first tape length recorded in the first preparation process. Lbreak The length is 1500.5m. After the preset time for reconnection and recovery from the tape breakage fault, the second tape length recorded in the first preparation process is obtained. Lresume The calculated length of the broken zone is 1498.8m. Lloss, splice = Lbreak - Lresume =1500.5m-1498.8m=1.7m. Anchor this broken strip length at the coating process where the strip broke, with the starting position being the length point recorded in the coating process before the strip broke, and the ending position being the starting position plus 1.7m.

[0138] By mapping the length of the tail material from the slitting and rolling process to a specific range, the quality status of the slitting electrode sheet in other processes can be determined. For example, the length of the slitting and rolling process can be mapped to the coating process, first by mapping the length of the slitting and rolling process to the roll splitting process, and then by mapping the length of the roll splitting process to the coating process. In the above embodiment, the length of the slitting and rolling process mapped to the roll splitting process is represented as [3154, 5033], and the length mapped to the coating process is represented as [1438, 3317]. The loss data output according to a preset format includes the length of each preparation process and the length corresponding to different events. For example, type=tail indicates the tail length; type=splice indicates the splicing length; type=base_roll indicates the tail length of the roll splitting process; and type=base_cut indicates the tail length of the slitting and rolling process.

[0139] In summary, the embodiments of this application have at least the following advantages and improvements.

[0140] 1. Significantly Improved Traceability Accuracy: This application's embodiment completely abandons the traditional timestamp alignment method by using the cumulative length of the electrode sheet as the unique traceability primary key, fundamentally eliminating time synchronization errors caused by clock drift, network latency, and asynchronous sampling. This application's embodiment, based on a geometric length-based traceability mechanism, achieves precise location mapping across processes, significantly improving the accuracy and reliability of electrode sheet loss data calculation.

[0141] 2. Breakthrough in consistency across processes: The embodiments of this application establish a unified length coordinate system, which realizes seamless connection of solid loss data in multiple processes such as coating, rolling, and cutting. This effectively solves the problems of repeated measurement, missed loss and inconsistent caliber in traditional methods, and provides a unified and reliable data foundation for quality control and cost accounting throughout the entire process.

[0142] 3. Significantly enhanced anti-interference capability: The embodiments of this application adopt a triple criterion mechanism of "amplitude threshold + minimum distinguishable length + hysteresis jitter reduction", combined with a multi-signal intelligent fusion strategy based on overlap, which can effectively distinguish between real solid loss events and various instantaneous interferences in industrial sites, significantly reducing the false alarm rate and false negative rate of the system, and improving the detection reliability in complex industrial environments.

[0143] 4. Long-term stable system measurement accuracy: The embodiments of this application can effectively compensate for system deviations such as sensor drift and model error based on the principle of mass conservation through a batch closed calibration mechanism, ensuring the long-term accuracy and stability of solid loss measurement results and providing reliable data support for production process optimization and quality improvement.

[0144] 5. Excellent Engineering Practicality and Integrability: The parameters in this application's embodiments have clear physical meanings, and the compensation rules are clear and concise, greatly reducing the difficulty of on-site debugging and maintenance. Simultaneously, the standardized structured output and open industrial communication interface enable the system to be quickly and seamlessly integrated with existing manufacturing execution systems, statistical process control systems, etc., demonstrating excellent engineering feasibility and promotional value.

[0145] 6. Outstanding value of technological paradigm innovation: The embodiments of this application realize the technological paradigm shift from the traditional time domain to the geometric length domain. It not only solves the specific technical problems in the current monitoring of electrode sheet loss data, but also provides new technical ideas and methodological support for quality traceability in the continuous roll-to-roll production process. It has important industry promotion value and demonstration significance.

[0146] Secondly, embodiments of this application provide an electronic device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the steps in the above-described method.

[0147] Thirdly, embodiments of this application provide a computer-readable storage medium having a computer program or instructions stored thereon, the computer program or instructions being loaded by a processor to perform the steps in the above-described method.

[0148] Computer-readable storage media can be, for example, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof, without particular limitation herein. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0149] In some embodiments of this application, a computer-readable storage medium may be any tangible medium that contains or stores a program that may be used or combined with an instruction execution system, apparatus, or device.

[0150] The aforementioned computer-readable storage medium may be included in the aforementioned electronic device, or it may exist independently without being assembled into the electronic device. The aforementioned computer-readable storage medium carries one or more programs that, when executed by the electronic device, cause the control chip in the electronic device to communicate with the intelligent network system via Ethernet through a physical layer device.

[0151] Computer program code for performing operations of some embodiments of this application can be written in one or more programming languages ​​or a combination thereof. These programming languages ​​include object-oriented programming languages ​​such as Java, Smalltalk, and C++, as well as conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network (including a local area network (LAN) or a wide area network (WAN)), or it can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0152] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of methods and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function.

[0153] It should also be noted that in some alternative implementations, the functions marked in the box may occur in a different order than those marked in the attached figures.

[0154] For example, two consecutively represented blocks can actually be executed in substantially parallel order, and sometimes they can be executed in reverse order, depending on the functions involved. It should also be noted that each block in a block diagram and / or flowchart, as well as combinations of blocks in block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified functions or operations, or using a combination of dedicated hardware and computer instructions.

[0155] The units described in some embodiments of this application can be implemented in software or in hardware.

[0156] The functions described above in this document can be performed at least in part by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), system-on-a-chip (SoCs), complex programmable logic devices (CPLDs), and so on.

[0157] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0158] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0159] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0160] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A method for detecting electrode sheet loss, characterized in that, Includes the following steps: During the preparation of the electrode sheet, the length of the interval corresponding to each preparation step of the electrode sheet is determined; Based on the length of each interval and the fixed consumption length of the electrode sheet in each of the preparation processes, the tail material length of the electrode sheet in each of the preparation processes is determined; The loss data for the preparation of the electrode sheet is determined based on the length of each tail material.

2. The method according to claim 1, characterized in that, The fixed consumption length includes the tail length and the splice length; determining the tail length of the electrode sheet in each of the preparation processes based on the length of each interval and the fixed consumption length of the electrode sheet in each of the preparation processes includes: The tail length of the second process is determined based on the winding length of the electrode sheet in the first process, the joint length between the first and second processes, and the unwinding length in the second process. The second process is prepared after the first process and is adjacent to the first process.

3. The method according to claim 1, characterized in that, The method further includes: The length of the electrode sheet in each of the preparation processes is compensated according to the length compensation data to obtain the compensated length; wherein, the length compensation data includes at least one of the following: installation offset data, roll tension data, and roll slip data; The step of determining the tail material length of the electrode sheet in each of the preparation processes based on the length of each of the intervals and the fixed consumption length of the electrode sheet in each of the preparation processes includes: Based on the compensated interval length of each of the preparation processes and the fixed consumption length of the electrode sheet in each of the preparation processes, the tail material length of the electrode sheet in each of the preparation processes is determined.

4. The method according to claim 1, characterized in that, The method further includes: The sensor data is mapped across the length of each interval of the electrode sheet to correlate with the loss data generated during the fabrication of the electrode sheet; wherein the sensor data includes at least one of the following: tension sensor data, thickness sensor data, and weight sensor data.

5. The method according to claim 1, characterized in that, The step of determining the loss data for electrode fabrication based on the length of each tail material includes: By correlating the length of each tail material with the length of the interval, the process loss of the electrode sheet in each of the preparation processes is obtained; The loss data of the electrode sheet fabrication is obtained based on the process loss of the electrode sheet in all fabrication processes.

6. The method according to claim 1, characterized in that, The method further includes: Determine the length of the broken band during the preparation of the electrode sheet; The step of determining the loss data for electrode fabrication based on the length of each tail material includes: The loss data for the preparation of the electrode sheet is determined based on the tail material length and the broken strip length.

7. The method according to claim 6, characterized in that, Determining the band break length of the electrode sheet during the fabrication process includes: The travel length of the electrode sheet is recorded at each preparation step; If a tape break signal is detected, the tape length of the target preparation process corresponding to the tape break signal is cleared to zero, and the first tape length set of other preparation processes is obtained respectively. In response to the restart signal, the target fabrication process is controlled to restart recording the tape length of the electrode sheet; After a preset time, obtain the second set of conveyor belt lengths recorded in the other preparation processes; The broken tape length is obtained based on the first set of tape lengths and the second set of tape lengths.

8. The method according to claim 7, characterized in that, The step of obtaining the broken tape length based on the first set of tape lengths and the second set of tape lengths includes: Determine the first tape length value corresponding to the first tape length set and the second tape length value corresponding to the second tape length set for the same preparation process; The length of the broken tape is obtained based on the first tape length value and the second tape length value.

9. The method according to claim 1, characterized in that, The method further includes: The correction coefficient for the loss data is obtained based on the quality data from the electrode sheet fabrication process. The loss data is corrected according to the correction coefficient to obtain the corrected loss data.

10. The method according to claim 7, characterized in that, The step of obtaining the correction coefficient for the loss data based on the quality data during the electrode sheet fabrication process includes: The correction coefficient is determined based on the first mass of the electrode sheet before preparation, the second mass of the electrode sheet after preparation, and the third mass measured per unit length of the electrode sheet.

11. The method according to any one of claims 1 to 10, characterized in that, The method further includes: The loss data of the electrode sheet fabrication is output according to a preset format.

12. An electronic device, characterized in that, include: At least one processor; as well as A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor to enable the at least one processor to perform the steps of the method according to any one of claims 1-11.

13. A computer-readable storage medium, characterized in that, It stores a computer program or instructions thereon, which are loaded by a processor to perform the steps of the method according to any one of claims 1-11.

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