Method, device and intelligent pure water replenishment system for dynamic setting of pure water replenishment level

Abstract

This invention relates to the field of intelligent water replenishment technology, and discloses a method, device, and intelligent pure water replenishment system for dynamically setting the liquid level of pure water. Based on the production plan, the system identifies and determines the planned start time of each batch for each production line, the processing time of each batch of the washing process on each production line, the process water consumption of each batch for each production line, the fixed lower limit liquid level of the pure water tank, and the fixed upper limit liquid level of the pure water tank, wherein the production plan includes at least one production line. Based on the planned start time of each batch for each production line, the water consumption pattern of the current batch is determined. Based on the water consumption pattern of the current batch and the processing time of each batch of the washing process on each production line for the current batch, the time window of the current batch is determined. Based on the water consumption pattern of the current batch, the process water consumption of each batch on each production line for the current batch, the fixed lower limit liquid level of the replenishment system, and the fixed upper limit liquid level of the safety system, predictions are made to determine the lower limit threshold of the replenishment system and the stop threshold of the time window for the current batch.

Description

Technical Field

[0001] This invention relates to the field of intelligent water replenishment technology, and in particular to a method, device, and intelligent pure water replenishment system for dynamically setting the liquid level of intelligent pure water replenishment. Background Technology

[0002] In the production process of lithium battery cathode materials, low-temperature chillers are used to provide chilled pure water at a constant temperature for key equipment such as washing kettles.

[0003] In related technologies, the pure water replenishment system adopts a control method based on a fixed liquid level threshold, namely, a preset lower replenishment limit L_low and a stop upper limit L_high: replenishment is started when the water tank level drops to L_low and stopped when it rises to L_high. During the replenishment process, ambient temperature pure water enters the pure water tank after being cooled by a plate heat exchanger. However, since the temperature drop is limited when flowing through the plate heat exchanger each time, the replenishment water temperature may not meet the standard, which may lead to abnormal fluctuations in the local water temperature within the tank. Summary of the Invention

[0004] The embodiments described in this specification aim to at least partially solve one of the technical problems in the related art. To this end, the embodiments of this specification propose a method, apparatus, and intelligent pure water replenishment system for dynamically setting the liquid level of intelligent pure water replenishment.

[0005] This specification provides a method for dynamically setting the intelligent pure water replenishment level, the method comprising: Identification is based on the production plan, which determines the planned start time of a single batch for each production line, the processing time of a single batch of the washing process for each production line, the process water consumption of a single batch for each production line, the fixed lower limit of the pure water tank and the fixed upper limit of the pure water tank, wherein the production plan includes at least one production line. Based on the planned start time of each batch for each production line, the water usage pattern for the current batch is determined; Based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch, the time window for the current batch is determined. Based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit of water replenishment level, and the fixed upper limit of safety level, the lower limit of water replenishment and the stop-on-line threshold of the time window for the current batch are predicted and determined.

[0006] In one implementation, determining the water usage pattern for the current batch based on the planned start time of each production line's single batch includes: The maximum value h in the single-batch processing time of the water washing process for each production line. max The target processing time is determined; Set the basic density coefficient to K0, and 1.0. <K0<1.2; Based on the aforementioned basic density coefficient and target processing time, the density time length K0 is determined. h max ; Based on the planned start time of each batch of production lines included in each batch, determine the earliest planned start time T for each batch. 早 ; Based on the earliest single-batch planned start time T 早 and the dense time length K0 h max Determine the peak time interval for each batch [T] 早 T 早 +K0 h max ]; When the planned start times of single batches for at least two production lines both fall within a dense time interval [T] 早 T 早 +K0 h max If the water usage pattern is within the specified range, then the water usage pattern is determined to be an intensive water usage pattern. or Based on the planned start time of each batch for each production line and the processing time of each batch of the water washing process for each production line, the water usage time range for each batch of each production line is determined. When the water usage time range of a single batch of at least two production lines overlaps or is continuous, the water usage pattern is determined to be a relay water usage pattern.

[0007] In one implementation, determining the time window for the current batch based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch includes: If the water usage pattern of the current batch is determined to be an intensive water usage pattern, then the maximum value h of the single-batch processing time of the water washing process for each production line in the current batch is calculated. max-p The target intensive processing time was determined; Based on the density coefficient K1 and the target intensive processing time h max-p Determine the time window T p ; Where, K1 = K0 × (1 + m × (N - 1)); N is the number of production lines whose single batch planned start time falls within the dense time interval, N ≥ 2; m is a coefficient, 0.1 ≤ m ≤ 0.3; T p =K1 h max-p ; The method of predicting and determining the water replenishment lower limit threshold and the stop-start threshold for the time window of the current batch based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit water replenishment level, and the fixed upper limit safety level includes: If the water usage pattern of the current batch is determined to be an intensive water usage pattern, the single-batch process water usage of each production line in the current batch is summed to obtain the emergency water usage. Based on the emergency water consumption and the preset water safety threshold, the gradual water consumption is obtained; Based on the emergency water demand and the fixed lower limit of water replenishment level, the time window T is determined. p The lower limit threshold for water replenishment; Based on the gradual water consumption and the fixed safe upper limit liquid level, the time window T is determined. p The threshold for stopping online access.

[0008] In one implementation, determining the time window for the current batch based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch includes: If the water usage pattern of the current batch is determined to be the relay water usage pattern, the processing time of each batch of the water washing process of each production line in the current batch is summed to obtain the time window. The method of predicting and determining the water replenishment lower limit threshold and the stop-start threshold for the time window of the current batch based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit water replenishment level, and the fixed upper limit safety level includes: If the water usage pattern of the current batch is determined to be a relay water usage pattern, the single batch process water usage of each production line in the current batch is summed to obtain the smooth water usage. The maximum value of the single-batch process water consumption for each production line in the current batch is taken as the emergency water consumption. Based on the emergency water consumption and the fixed lower limit water replenishment level, the lower limit threshold for water replenishment in the time window is determined. Based on the gradual water consumption and the fixed safety upper limit liquid level, the stop threshold for the time window is determined.

[0009] In one implementation, determining the time window for the current batch based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch includes: If the water usage mode for the current batch is determined to be the normal mode, then the maximum value h of the single-batch processing time for the water washing process on each production line of the current batch is taken. max-n The target processing time is determined; Based on the preset general coefficient K2 and the target general processing time h max-n Determine the time window T n ; The method of predicting and determining the water replenishment lower limit threshold and the stop-start threshold for the time window of the current batch based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit water replenishment level, and the fixed upper limit safety level includes: If the water usage pattern of the current batch is determined to be the normal mode, the maximum and second maximum values ​​of the single-batch process water usage of each production line in the current batch are summed to obtain the average water usage. The maximum value of the single-batch process water consumption for each production line in the current batch is taken as the emergency water consumption. Based on the emergency water demand and the fixed lower limit of water replenishment level, the time window T is determined. n The lower limit threshold for water replenishment; Based on the gradual water consumption and the fixed safe upper limit liquid level, the time window T is determined. n The threshold for stopping online access.

[0010] In one embodiment, the method further includes the step of replenishing the pure water tank with water up to the stop threshold before the start of the current batch, the step including: Obtain the current water level value when the pure water tank is not in water supply mode; If the current water level is lower than the lower limit threshold for water replenishment, water is added to the pure water tank until the upper limit threshold for stopping is reached; If the current water level is higher than the lower water replenishment threshold but lower than the upper stop threshold, water is added to the pure water tank until the upper stop threshold is reached.

[0011] In one embodiment, the method further includes: When the production line requests water supply, obtain the current water temperature of the pure water tank; If the current water temperature meets the standard conditions, obtain the current water level value; If the current water level is greater than or equal to the requested water volume, the pure water tank is permitted to supply water to the production line.

[0012] In one embodiment, the method further includes: If the pure water tank is not replenished to the stop threshold before the start of the current batch, an early warning will be issued and the start time of the current batch will be delayed until the water level reaches the stop threshold.

[0013] This specification provides a method for intelligent pure water replenishment, wherein the liquid level setting of the intelligent pure water replenishment system is implemented based on the dynamic liquid level setting method for intelligent pure water replenishment described in any one of the above-mentioned methods, and the system includes: The main pure water tank is used to supply water to the production line; A backup pure water tank is connected to the main pure water tank via a main / backup water tank connecting valve. The backup pure water tank is used to store water that meets the required water temperature, and when the main pure water tank needs to be replenished, it outputs water that meets the required water temperature to the main pure water tank through the main / backup water tank connecting valve.

[0014] This specification provides a device for dynamically setting the intelligent water replenishment level of pure water, the device comprising: The basic parameter determination module is used to identify based on the production plan and determine the single batch start time of each production line, the single batch processing time of the water washing process of each production line, the single batch process water consumption of each production line, the fixed lower limit liquid level of the pure water tank and the fixed upper limit liquid level of the pure water tank, wherein the production plan includes at least one production line. The water usage pattern determination module is used to determine the water usage pattern of the current batch based on the planned start time of each batch for each production line. The time window determination module is used to determine the time window for the current batch based on the water usage pattern of the current batch and the single batch processing time of the water washing process of each production line in the current batch. The water replenishment threshold determination module is used to predict and determine the water replenishment lower limit threshold and the stop-on-line threshold for the time window of the current batch based on the water usage pattern of the current batch, the single batch process water consumption of each production line in the current batch, the fixed water replenishment lower limit liquid level and the fixed safety upper limit liquid level.

[0015] This specification provides a computer device comprising: a memory, and one or more processors communicatively connected to the memory; the memory stores instructions executable by the one or more processors, the instructions being executed by the one or more processors to cause the one or more processors to perform the steps of the method described in any of the above embodiments.

[0016] This specification provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described in any of the above embodiments.

[0017] This specification provides a computer program product that includes instructions that, when executed by a processor of a computer device, enable the computer device to perform the steps of the method described in any of the above embodiments.

[0018] In the above-described implementation method, firstly, based on the production plan, the planned start time for each batch of a production line, the processing time for each batch of the washing process on each production line, the process water consumption for each batch of a production line, the fixed lower limit level of the pure water tank, and the fixed upper limit level of the pure water tank are determined. The production plan includes at least one production line. Based on this, the water consumption pattern for the current batch is determined according to the planned start time for each batch of a production line. Subsequently, based on the water consumption pattern for the current batch and the processing time for each batch of the washing process on each production line for the current batch, the time window for the current batch is determined. Finally, based on the water consumption pattern for the current batch, the process water consumption for each batch of a production line for the current batch, the fixed lower limit level of the water tank, and the fixed upper limit level of the safe water tank, predictions are made to determine the lower limit threshold for water replenishment and the stop-start threshold for the time window of the current batch.

[0019] The above methods enable intelligent prediction of water demand based on production plans and dynamic adjustment of water replenishment level thresholds. This provides a basis for interlocking and coordinated control of water replenishment and supply, thereby ensuring safe and continuous water supply to the production line, reducing ineffective start-ups and shutdowns of chillers to save energy and extend equipment lifespan. By introducing an adaptive time window, production fluctuations can be smoothed proactively, and control strategies can be automatically optimized under different water usage modes. By dynamically adjusting the upper limit of water replenishment stoppage, excessive storage of pure water and ineffective cooling cycles of chillers are reduced, significantly lowering system energy consumption and mitigating the start-up and shutdown frequency and load impact of core components such as compressors, thus effectively extending equipment lifespan. Attached Figure Description

[0020] Figure 1 A flowchart illustrating the method for dynamically setting the intelligent pure water replenishment level in the embodiments of this specification; Figure 2 A flowchart illustrating the process of determining the water usage pattern as an intensive water usage pattern for the implementation of this specification; Figure 3 A flowchart illustrating the process of determining the water use mode as a relay water use mode for the implementation of this specification; Figure 4 A flowchart illustrating the determination of a time window under an intensive water use pattern, provided for the implementation of this specification. Figure 5 A flowchart illustrating the process of determining the lower limit threshold for water replenishment and the upper limit threshold for stopping water use under the intensive water use mode, as provided in the embodiments of this specification. Figure 6 A flowchart illustrating the process of determining the lower limit threshold for water replenishment and the upper limit threshold for stopping water use in the time window under the relay water use mode provided in this specification. Figure 7A flowchart illustrating the determination of a time window in a general mode, provided for implementation of this specification; Figure 8 A flowchart illustrating the process of determining the lower limit threshold for water replenishment and the upper limit threshold for stopping the online activity in a time window under normal conditions, as provided in the embodiments of this specification. Figure 9 A schematic diagram illustrating the process of replenishing water to the pure water tank to the stop threshold provided in the embodiments of this specification; Figure 10 A schematic diagram illustrating the process of allowing a pure water tank to supply water to the production line, provided for the implementation of this specification. Figure 11 A schematic diagram of the intelligent pure water replenishment level dynamic setting system provided for the embodiments of this specification; Figure 12 A schematic diagram of the intelligent pure water replenishment level dynamic setting device provided for the embodiments of this specification; Figure 13 An internal structural diagram of a computer device provided for embodiments of this specification. Detailed Implementation

[0021] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0022] In the production process of lithium battery cathode materials, low-temperature chillers are used to provide chilled pure water at a constant temperature for key equipment such as washing kettles.

[0023] In related technologies, the pure water replenishment system adopts a control method based on a fixed liquid level threshold, namely, a preset lower replenishment limit L_low and a stop upper limit L_high: replenishment is started when the water tank level drops to L_low and stopped when it rises to L_high. During the replenishment process, ambient temperature pure water enters the pure water tank after being cooled by a plate heat exchanger. However, since the temperature drop is limited when flowing through the plate heat exchanger each time, the replenishment water temperature may not meet the standard, which may lead to abnormal fluctuations in the local water temperature within the tank.

[0024] However, the relevant technology has three major flaws: 1. Fixed thresholds are difficult to match dynamic water demand. When the production line's water consumption is low and the water tank level remains near L for an extended period, the pure water in the tank needs to be repeatedly circulated and cooled by the chiller unit to maintain the set temperature because it is not consumed in time, leading to frequent start-ups and shutdowns of the chiller unit. This not only increases ineffective energy consumption but also adversely affects the service life of core components such as compressors and expansion valves due to frequent load shocks.

[0025] 2. Delayed water replenishment response makes it difficult to cope with peak water usage. When multiple production lines start up simultaneously or a production line enters a high water-consuming process, the instantaneous water consumption increases sharply. Since the system relies solely on a fixed lower limit (L) for water replenishment, it cannot store enough water in advance to cope with the upcoming peak water consumption. This easily leads to the water replenishment rate lagging behind the consumption rate, which in turn risks causing the production line to shut down due to water shortage.

[0026] 3. Lack of predictive capability, unable to achieve proactive control. The control logic of related technologies only responds passively based on real-time liquid levels, failing to combine production plans to predict future water demand, and therefore cannot proactively adapt to water consumption fluctuations caused by changes in production rhythm.

[0027] Furthermore, the water supply logic of the relevant technology only checks whether the pure water tank temperature meets the standard when the production line requests water, but fails to include whether the real-time liquid level in the tank is sufficient to meet the expected water consumption for that request in the water supply judgment conditions. This may lead to water being supplied to the production line even when the liquid level is already low, further exacerbating the risk of water shortage.

[0028] Based on this, the embodiments of this specification provide a method for dynamically setting the intelligent pure water replenishment level. First, based on the production plan, the start time of a single batch plan for each production line, the processing time of a single batch in the washing process of each production line, the process water consumption of a single batch for each production line, the fixed lower limit replenishment level of the pure water tank, and the fixed upper limit safety level of the pure water tank are determined. The production plan includes at least one production line. Based on this, the water consumption pattern for the current batch is determined according to the start time of the single batch plan for each production line. Subsequently, based on the water consumption pattern of the current batch and the processing time of the washing process of each production line for the current batch, the time window for the current batch is determined. Finally, based on the water consumption pattern of the current batch, the process water consumption of each production line for the current batch, the fixed lower limit replenishment level, and the fixed upper limit safety level, predictions are made to determine the lower limit replenishment threshold and the stop-up threshold for the time window of the current batch.

[0029] The above methods enable intelligent prediction of water demand based on production plans and dynamic adjustment of water replenishment level thresholds. This provides a basis for interlocking and coordinated control of water replenishment and supply, thereby ensuring safe and continuous water supply to the production line, reducing ineffective start-ups and shutdowns of chillers to save energy and extend equipment lifespan. By introducing an adaptive time window, production fluctuations can be smoothed proactively, and control strategies can be automatically optimized under different water usage modes. By dynamically adjusting the upper limit of water replenishment stoppage, excessive storage of pure water and ineffective cooling cycles of chillers are reduced, significantly lowering system energy consumption and mitigating the start-up and shutdown frequency and load impact of core components such as compressors, thus effectively extending equipment lifespan.

[0030] This specification provides a method for dynamically setting the intelligent pure water replenishment level. Please refer to [link / reference]. Figure 1 The method may include the following steps: S110. Based on the production plan, identify and determine the planned start time of each batch for each production line, the processing time of each batch of the water washing process for each production line, the process water consumption of each batch for each production line, the fixed lower limit of the pure water tank and the fixed upper limit of the pure water tank.

[0031] The production plan must include at least one production line.

[0032] Specifically, the first step is to establish a data linkage mechanism with the Manufacturing Execution System (MES) and the Batch Control System (BATCH). Through this linkage mechanism, production line planning information from the MES can be obtained in real time.

[0033] Production plans are issued by the MES in the form of production task orders and transmitted to the field execution layer via the BATCH system. The production plan retrieved from the MES by the system not only includes task instructions but also the corresponding product process formula. This formula is the core basis for subsequent analysis, linking the product model, the designated production line, the complete process route, and specifically specifying the key process parameters of the washing process in the route, including the single-batch processing time for the washing process on each production line, the single-batch process water consumption on each production line, the fixed lower limit of the pure water tank's replenishment level, and the fixed upper limit of the pure water tank's safety level. The single-batch process water consumption is typically set within a standard range, such as (400~700) ± 2L, to ensure process stability and accuracy. The process route is composed of the required equipment selected from multiple devices on the production line, thus defining the specific production flow for a particular product. The fixed lower limit of the pure water tank's replenishment level and the fixed upper limit of the pure water tank serve as the basic boundaries to ensure production continuity and safety.

[0034] Based on the production plan and formula information obtained above, the system analyzes and determines the task start sequence of each production line within a preset time dimension. This analysis process aims to clarify the production cycle of each production line and specifically determine the start time of each batch plan for each production line.

[0035] It should be noted that when the production plan changes, such as inserting new production line tasks or adjusting the original plan, the system will not immediately interrupt the current water replenishment window. To ensure production continuity, the system will wait until the currently running time window ends before re-analyzing the task sequence of all production lines based on the updated production plan and calculating a new water replenishment time window sequence.

[0036] S120. Based on the planned start time of each batch for each production line, determine the water usage pattern for the current batch.

[0037] S130. Based on the water usage pattern of the current batch and the single-batch processing time of the water washing process of each production line in the current batch, determine the time window for the current batch.

[0038] Specifically, an adaptive time window strategy is adopted to dynamically respond to and match different production conditions. In implementation, firstly, the start time of each batch's planned usage for each production line is matched with preset water usage patterns to automatically identify and determine the water usage pattern for the current batch. Based on this, and considering the single-batch processing time of the washing process on each production line for the current batch, a built-in algorithm automatically calculates and generates the corresponding time window for the current batch. This window precisely defines the water demand period for the current batch from start to end, ensuring that water supply remains synchronized with changes in the actual production process, achieving on-demand supply and precise control.

[0039] S140. Based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit of water replenishment level and the fixed upper limit of safety level, predict and determine the lower limit of water replenishment threshold and the stop-on-line threshold of the time window for the current batch.

[0040] Specifically, under the current batch's water usage pattern, before the current batch's time window opens, the system will recalculate based on the production tasks to be executed within the current batch's time window (i.e., the water washing processes of the production lines planned to start during this period), combined with the single-batch process water consumption of each production line in the current batch. During the prediction process, it is also necessary to combine the fixed lower limit water replenishment level and the fixed upper limit safety level to determine the lower limit threshold for water replenishment and the stop-on-line threshold for the current batch's time window.

[0041] The water replenishment lower limit threshold is used to ensure that during water supply periods when water replenishment is prohibited, the remaining water in the pure water tank can meet the maximum expected water demand in the future urgent period output by the prediction module.

[0042] The stop-on threshold is used to prevent excessive pure water from being stored in the pure water tank, provided that the water demand for a period of time in the future, as output by the prediction module, is met.

[0043] In the aforementioned method for dynamically setting the intelligent pure water replenishment level, firstly, based on the production plan, the start time of a single batch plan for each production line, the processing time of a single batch in the washing process of each production line, the process water consumption of a single batch for each production line, the fixed lower limit replenishment level of the pure water tank, and the fixed upper limit safety level of the pure water tank are determined. The production plan includes at least one production line. Based on this, the water consumption pattern for the current batch is determined according to the start time of the single batch plan for each production line. Subsequently, based on the water consumption pattern of the current batch and the processing time of the washing process of each production line for the current batch, the time window for the current batch is determined. Finally, based on the water consumption pattern of the current batch, the process water consumption of each production line for the current batch, the fixed lower limit replenishment level, and the fixed upper limit safety level, predictions are made to determine the lower limit replenishment threshold and the stop-up threshold for the time window of the current batch.

[0044] The above methods enable intelligent prediction of water demand based on production plans and dynamic adjustment of water replenishment level thresholds. This provides a basis for interlocking and coordinated control of water replenishment and supply, thereby ensuring safe and continuous water supply to the production line, reducing ineffective start-ups and shutdowns of chillers to save energy and extend equipment lifespan. By introducing an adaptive time window, production fluctuations can be smoothed proactively, and control strategies can be automatically optimized under different water usage modes. By dynamically adjusting the upper limit of water replenishment stoppage, excessive storage of pure water and ineffective cooling cycles of chillers are reduced, significantly lowering system energy consumption and mitigating the start-up and shutdown frequency and load impact of core components such as compressors, thus effectively extending equipment lifespan.

[0045] In some implementations, please refer to Figure 2 Based on the planned start time of each batch on each production line, determining the water usage pattern for the current batch can include the following steps: S210. Calculate the maximum value h of the single-batch processing time for the water washing process on each production line. max The target processing time is determined.

[0046] S220, Set the basic density coefficient to K0, and 1.0 <K0<1.2。

[0047] S230. Based on the basic density coefficient and the target processing time, determine the density time length K0. h max .

[0048] S240. Based on the planned start time of each batch of production lines included in each batch, determine the earliest planned start time T of each batch. 早 .

[0049] S250, based on the earliest single-batch planned start time T 早 and dense time length K0 hmax , determine the intensive time interval [T 早 , T 早 + K0 h max .

[0050] S260. When the single-batch planned start times of at least two production lines all fall within the intensive time interval [T 早 , T 早 + K0 h max , then determine the water use pattern as the intensive water use pattern.

[0051] Specifically, identify the single-batch processing time of the water washing process for each production line, and select the maximum value h max as the target processing time. Set the basic intensive coefficient as K0, and 1.0 < K0 < 1.2. On this basis, multiply the basic intensive coefficient K0 and the target processing time h max to obtain an intensive time length K0 h max , and this length is used as the core time scale for measuring the aggregation degree of the planned start times of each production line. Next, obtain the single-batch planned start time of the current batch for each production line, and find the earliest start time from them, denoted as the earliest single-batch planned start time T 早 . Taking the earliest single-batch planned start time T 早 as the starting moment, and taking the intensive time length K0 h max as the interval length, construct the intensive time interval [T 早 , T 早 + K0 h max . Then, compare and judge the single-batch planned start times of each production line one by one. If it is detected that the single-batch planned start times of at least two production lines all fall within the intensive time interval [T 早 , T 早 + K0 h max ] , then determine that the water use state conforms to the characteristics of the intensive water use pattern. It should be noted that the above process is independently executed once in each batch scheduling cycle. That is to say, the earliest single-batch planned start time T 早 will be re-determined for each batch, and then the intensive time interval [T 早 , T 早 + K0 h max will be re-determined. The batches that meet the intensive water use pattern are the current batches.

[0052] Among them, the basic density coefficient K0 is a multiplier factor used to calculate the density time length, which is usually set according to actual production requirements or experience. In some embodiments, the basic density coefficient is set to K0, where 1.0 < K0 < 1.2. The lower limit of the basic density coefficient K0 is taken as 1.0 to reserve a basic fault tolerance for the density time length, so as to adapt to the minor time deviations that may occur in actual production and avoid misjudging the true density water use situation due to strict alignment. The upper limit is taken as 1.2 to limit the excessive extension of the density time length and prevent misjudging the working conditions that do not originally belong to density water use as density water use, thereby avoiding energy consumption waste and control logic confusion caused by excessive prediction of the system.

[0053] Exemplarily, based on the production plan for identification, it is determined that the single-batch processing time of the water washing process of production line A is h1, and the single-batch planned start time of production line A is T1; the single-batch processing time of the water washing process of production line B is h2, and the single-batch planned start time of production line B is T2; the single-batch processing time of the water washing process of production line C is h3, and the single-batch planned start time of production line C is T3, where h3 > h1 > h2; T1 is earlier than T2 and T2 is earlier than T3. The maximum value h3 of the single-batch processing time of the water washing process of each production line is determined as the target processing time, and the density time length K0 h3 is determined. Based on the single-batch planned start time of each production line included in each batch, the earliest single-batch planned start time T1 is determined; based on the earliest single-batch planned start time T1 and the density time length K0 h3, the density time interval [T1, T1 + K0 h3] for each batch is determined.

[0054] In this embodiment, T1 and T2 fall within the density time interval [T1, T1 + K0 h3], while T3 does not fall within the density time interval [T1, T1 + K0 h3]. Since the single-batch planned start times of two production lines both fall within the density time interval [T1, T1 + K0 h3], the water use mode is determined as the density water use mode.

[0055] It should be noted that the density water use mode means that the planned start times of the water washing processes of at least two production lines are highly concentrated, and almost enter the high water consumption stage simultaneously, resulting in an instantaneous flow peak faced by the system in a very short time period. Specifically, when the single-batch planned start times of at least two production lines both fall within the density time interval and at the same time satisfy that the water use time ranges of the single batches of at least two production lines overlap or are continuous, it is determined as the density water use mode.

[0056] In the above method for dynamically setting the intelligent pure water replenishment liquid level, the maximum value h of the single-batch processing time of the water washing process of each production linemax Determine the target processing time, set the basic density coefficient as K0, and 1.0 < K0 < 1.2. Based on the basic density coefficient and the target processing time, determine the density time length K0 h max , Based on the start time of a single batch plan of the production lines included in each batch, determine the earliest start time of a single batch plan T 早 , Based on the earliest start time of a single batch plan T 早 and the density time length K0 h max , Determine the density time interval [T 早 , T 早 +K0 h max , When the start times of single batch plans of at least two production lines all fall within the density time interval [T 早 , T 早 +K0 h max , then determine the water use mode as the intensive water use mode, so as to provide a data basis for accurately responding to the extreme water use conditions of the relay water supply through adaptive prediction in the follow-up, and combining the double verification of the dynamic water replenishment lower limit and the water level before water supply.

[0057] In some embodiments, please refer to Figure 3 , Based on the start time of a single batch plan of each production line, determine the water use mode of the current batch, which may include the following steps: S310. Based on the start time of a single batch plan of each production line and the single batch processing time of the water washing process of each production line, determine the water use time range of each batch of each production line.

[0058] Specifically, first, according to the start time of a single batch plan of each production line and the single batch processing time of the water washing process of each production line, determine the specific water use time range of each production line in each production batch. Among them, the water use time range of a certain production line in a certain batch refers to the time interval starting from the planned start moment of the water washing process of this batch and ending after the required processing time of this process is completed, that is, the time period when this production line actually occupies the water use resources in this batch.

[0059] S320. When the water use time ranges of single batches of at least two production lines overlap or are continuous, determine the water use mode as the relay water use mode.

[0060] Among them, the relay water use mode ensures the close connection of the production plans of the front and rear production lines. Specifically, when the water washing process of the previous production line has not ended, the subsequent production line has already entered the water use stage, thus forming a quasi-continuous water use process. In this mode, the water use load of the system has no obvious instantaneous peak value, but shows a continuous and stable water use demand.

[0061] Specifically, after determining the water usage time range for each batch on each production line, the water usage time relationship between multiple production lines is further analyzed. If it is identified that the water usage time ranges for single batches of at least two production lines overlap in time, or that the two water usage ranges are consecutive with no significant time interval (i.e., the planned start time of the washing process on the later production line is no later than the end time of the water usage on the earlier production line (i.e., the planned start time of a single batch on the earlier production line plus the processing time of a single batch in the washing process), then the water usage of these batches forms a continuous, relay-style load transfer on the time axis, rather than a scattered or disjointed routine water usage. In this case, the water usage pattern is determined to be a relay water usage pattern. It should be noted that the batch that conforms to the relay water usage pattern is the current batch.

[0062] For example, based on the production plan, the planned start time for a single batch of production line A is determined to be 9:00 AM, and the processing time for a single batch of washing in production line A is 2 hours, so the water usage time range is from 9:00 AM to 11:00 AM; the planned start time for a single batch of production line B is 10:00 AM, and the processing time for a single batch of washing in production line B is 1 hour, so the water usage time range is from 10:00 AM to 11:00 AM; the planned start time for a single batch of production line C is 11:00 AM, and the processing time for a single batch of washing in production line C is 3 hours, so the water usage time range is from 11:00 AM to 2:00 PM.

[0063] Production line B's start time of 10:00 falls within the water usage period of production line A (i.e., there is a time overlap), while production line C's start time of 11:00 seamlessly connects with production line A's water usage end time of 11:00. The water usage of these production lines forms a continuous, relay-style load transfer on the timeline, therefore this water usage pattern is determined to be a relay water usage pattern.

[0064] In the above-mentioned method for dynamically setting the intelligent pure water replenishment level, the water usage time range for each batch of each production line is determined based on the planned start time of each batch of each production line and the processing time of each batch of the water washing process of each production line. When the water usage time ranges of at least two production lines overlap or are continuous, the water usage mode is determined to be the relay water usage mode. This provides a data basis for subsequent adaptive prediction to accurately deal with extreme relay water usage conditions and combines the dynamic replenishment lower limit and the water level before water supply for dual verification.

[0065] It should be noted that intensive water use refers to a situation where the planned start times of the washing processes on at least two production lines are highly concentrated, entering the high water consumption phase almost simultaneously, causing the system to face instantaneous flow peaks within a very short period. Compared to the gradual transfer of load over time in relay water use, intensive water use places a more severe impact on the pure water supply system and requires a higher instantaneous response time for water replenishment. Therefore, in determining the actual water use pattern, priority should be given to identifying whether it conforms to the intensive water use pattern. Specifically, when the planned start times of single batches on at least two production lines all fall within the intensive time interval, and the water use time ranges of single batches on at least two production lines overlap or are consecutive, it is determined to be an intensive water use pattern.

[0066] In some implementations, please refer to Figure 4 Based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch, the time window for the current batch is determined, which may include the following steps: S410. If the water usage pattern of the current batch is determined to be an intensive water usage pattern, then the maximum value h of the single-batch processing time of the water washing process for each production line in the current batch is calculated. max-p The target intensive processing time was determined.

[0067] S420, based on the density coefficient K1 and the target dense processing time h max-p Determine the time window T p .

[0068] Where, K1 = K0 × (1 + m × (N - 1)); N is the number of production lines whose single batch planned start time falls within the dense time interval, N ≥ 2; m is a coefficient, 0.1 ≤ m ≤ 0.3; T p =K1 h max-p .

[0069] Specifically, if the water usage pattern of the current batch is determined to be intensive water usage, the single-batch processing time of the water washing process for each production line in the current batch is identified, and the maximum value h is selected. max-p The target intensive processing time forms the basis for subsequent time window calculations. Then, based on the basic intensive coefficient K0 and the number of production lines N included in the current batch, an intensive coefficient K1 applicable to this batch is determined. Finally, based on the intensive coefficient K1 and the target intensive processing time h... max-p Calculate a time window T that focuses on recent peak demand. pThis allows for rapid and sensitive capture of peak instantaneous water demand, driving the system into a high-alert state and activating the water storage mechanism in advance. The time window setting aims to balance forecast accuracy and economy: a window that is too small may lead to insufficient response to short-term sudden demands, while a window that is too large may introduce unnecessary delays or resource waste. By rationally configuring the time window, the water replenishment mechanism can achieve balanced, on-demand water supply, avoiding excessive or delayed replenishment. The density coefficient K1 is an adjustable parameter used to enhance the system's responsiveness to recent instantaneous peak water demand, making the time window more targeted and dynamically adaptable. This parameter is set with the number of production lines falling within the candidate time interval as the core decision variable, and the density coefficient is calculated through a linear proportional relationship to adapt to production scenarios with dynamically changing production line numbers. The density coefficient is positively correlated with the number of production lines starting intensively: the more production lines that start simultaneously within the same time window, the higher the expected peak instantaneous water demand. To address this, the system needs to expand the range of the intensive water supply time interval to predict and schedule water volume in advance. Therefore, the density coefficient will be adjusted in real time based on the dynamic changes in the number of production lines using a simple linear formula, thereby ensuring that the division of time windows is more targeted and dynamically adaptable.

[0070] In some implementations, the basic water usage coefficient K0 can be set as the coefficient for a single production line starting independently. Then, the number N of production lines whose planned start time for a single batch falls within the intensive water usage time interval is counted (N≥2, meeting the criteria for intensive water usage pattern determination). Then, the water usage coefficient K1 is determined according to the following formula: K1 = K0 × (1 + m × (N-1)) This formula indicates that for each additional production line that starts intensively, the density coefficient increases by K0×m, thereby balancing the accuracy of prediction while avoiding excessive expansion of the time interval.

[0071] It should be noted that the coefficient m in the formula is an adjustable parameter. In this application, the coefficient range applicable to cathode material production lines is 0.1-0.3, preferably 0.2. The specific value can be flexibly adjusted according to the actual production scenario, water usage characteristics, or scheduling needs to ensure that the density coefficient setting is more in line with the on-site working conditions, further improving the rationality and dynamic adaptability of the time window division. Among them, the lower limit of 0.1 ensures that the time window has a basic extension capability under any number of dense production lines, thereby accurately covering the actual water usage peak and avoiding the risk of water outages; the upper limit of 0.3 is used to limit the excessive expansion of the time window, avoid the ineffective energy consumption of the chiller due to predictive redundancy, and at the same time ensure the stability of the control logic for dynamic liquid level setting. The combination of the two allows the coefficient m to accurately adapt to the dynamic changes in the number of dense production lines, ultimately achieving the optimal balance between water supply security and system economy under dense water usage mode.

[0072] For example, if K0=1.1, m=0.2, and the number of production lines N falling into the dense time interval is 3, then the density coefficient K1=1.1×(1+0.2×(3-1))=1.54; if the number of production lines N falling into the dense time interval is 4, then the density coefficient K1=1.1×(1+0.2×(4-1))=1.76.

[0073] For example, based on the production plan, the processing time for a single batch of the washing process in production line A is determined to be 2 hours, and the process water consumption per batch in production line A is 600L; the processing time for a single batch of the washing process in production line B is 1 hour, and the process water consumption per batch in production line B is 700L; the processing time for a single batch of the washing process in production line C is 3 hours, and the process water consumption per batch in production line C is 750L. The fixed lower limit level for replenishing the pure water tank is 800L, and the fixed upper limit level for safe operation of the pure water tank is 5000L.

[0074] Based on the production plan, the start time of each batch plan for each production line is determined. The MES shows that the washing process of a certain batch of production line A and the washing process of a certain batch of production line B both start within 1 hour, which is judged as an intensive water use mode.

[0075] In the intensive water usage mode, the maximum value of 2 hours (2 hours for a single batch of washing operations in production line A and 1 hour for a single batch of washing operations in production line B) is determined as the target intensive processing time. Then, the intensive processing coefficient of 1.3 is multiplied by the target intensive processing time of 2 hours to determine the time window as 2.6 hours.

[0076] In the above-mentioned method for dynamically setting the intelligent pure water replenishment level, when it is determined that the water usage mode of the current batch is an intensive water usage mode, the maximum value h of the single-batch processing time of the water washing process of each production line in the current batch is set. max-p The target intensive processing time is determined based on the intensive processing coefficient K1 and the target intensive processing time h. max-p Determine the time window T p This ensures that water consumption forecasts consistently provide optimal foresight and decision relevance under varying production loads and schedules.

[0077] In some implementations, please refer to Figure 5 Based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit water replenishment level, and the fixed upper limit safety level, predictions are made to determine the lower limit water replenishment threshold and the stop-up threshold for the time window of the current batch. This can include the following steps: S510. If the water usage pattern of the current batch is determined to be an intensive water usage pattern, sum up the single-batch process water usage of each production line in the current batch to obtain the emergency water usage.

[0078] S520: Based on emergency water usage and preset water safety thresholds, the gradual water usage is obtained.

[0079] S530. Based on emergency water consumption and fixed lower limit water supply level, determine the time window T. p The lower limit threshold for water replenishment.

[0080] S540. Based on a gradual water consumption and a fixed upper limit of the safe water level, determine the time window T. p The threshold for stopping online access.

[0081] Specifically, if the water usage pattern of the current batch is determined to be an intensive water usage pattern, the single-batch process water usage of each production line in the current batch is summed, and the result is defined as the emergency water usage, serving as a reference for subsequent water replenishment strategies. Then, based on the emergency water usage and a preset water usage safety threshold, the gradual water usage is calculated. Next, in order to determine the time window T... p The lower limit threshold for water replenishment is determined by comparing the emergency water consumption with the fixed lower limit level of the pure water tank, and the larger of the two values ​​is taken as the fixed time window T. p The lower limit threshold for water replenishment. On the other hand, in order to determine the time window T p The upper limit threshold for stopping water replenishment is determined by comparing the gradual water consumption with the fixed safe upper limit liquid level of the pure water tank, and taking the smaller value as the upper limit threshold to prevent the water level in the tank from being too high and causing the risk of overflow. Under the premise of ensuring safety, the water replenishment control is optimized to avoid unnecessary frequent start-stop.

[0082] For example, in the intensive water use mode, the single-batch process water consumption of production line A (600L) and production line B (700L) are summed to obtain an emergency water consumption of 1300L. The emergency water consumption of 1300L is then summed with the preset water safety threshold of 200L to obtain a moderate water consumption of 1500L.

[0083] Then, comparing the emergency water consumption of 1300L and the fixed lower limit of water replenishment of 800L, the larger value of 1300L was determined as the time window T. p The lower limit threshold for water replenishment.

[0084] Comparing the gradual water consumption of 1500L and the fixed safety upper limit liquid level of 5000L, the smaller value of the gradual water consumption of 1500L is determined as the time window T. p The threshold for stopping online access.

[0085] The final water replenishment limit was set at 1300L and the stop limit at 1500L within a 2.6-hour time window, balancing water supply safety and economy.

[0086] In the above-mentioned method for dynamically setting the intelligent pure water replenishment level, when the water usage mode of the current batch is determined to be an intensive water usage mode, the single-batch process water consumption of each production line in the current batch is summed to obtain the emergency water consumption. Based on the emergency water consumption and the preset water safety threshold, the gradual water consumption is obtained. Based on the emergency water consumption and the fixed replenishment lower limit level, the time window T is determined. p The lower limit threshold for water replenishment is determined based on a gradual water consumption and a fixed upper limit level for safety, and the time window T is determined accordingly. p The method allows for the dynamic adjustment of the water replenishment threshold based on actual water usage patterns, achieving efficient and stable water supply management. This method eliminates the need for large water storage; the chiller only operates for a short time after water replenishment, significantly reducing energy consumption while ensuring uninterrupted water supply for regular use.

[0087] In some implementations, determining the time window for the current batch based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch may include: if the water usage pattern of the current batch is determined to be a relay water usage pattern, summing the single-batch processing time of the water washing process on each production line of the current batch to obtain the time window.

[0088] Specifically, assuming the current batch's water usage pattern is a relay water usage pattern, the processing time of each batch's washing process on each production line in the current batch is summed to obtain a time window. This time window must be no less than a complete production line cycle, fully covering the water usage rhythm of all continuous production lines. The time window is designed to balance forecast accuracy and economy: a window that is too small may lead to insufficient response to short-term sudden demands, while a window that is too large may introduce unnecessary delays or resource waste. By rationally configuring the time window, the water replenishment mechanism can be driven to achieve balanced, on-demand water supply, avoiding excessive or delayed water replenishment.

[0089] For example, based on the production plan, the processing time for a single batch of the washing process in production line A is determined to be 2 hours, and the process water consumption per batch in production line A is 600L; the processing time for a single batch of the washing process in production line B is 1 hour, and the process water consumption per batch in production line B is 700L; the processing time for a single batch of the washing process in production line C is 3 hours, and the process water consumption per batch in production line C is 750L. The fixed lower limit level for replenishing the pure water tank is 800L, and the fixed upper limit level for safe operation of the pure water tank is 5000L.

[0090] Based on the production plan, the planned start time of each batch on each production line is determined. The MES shows that after a certain batch of production line A starts the water washing process for 1 hour, production line B starts; after a certain batch of production line B starts the water washing process for 1 hour, production line C starts. The three are closely connected to form a continuous water use pattern, which is determined to be a relay water use pattern.

[0091] In the relay water usage mode, the single batch processing time of the water washing process in production line A is 2 hours, the single batch processing time of the water washing process in production line B is 1 hour, and the single batch processing time of the water washing process in production line C is 3 hours. The result is a time window of 6 hours.

[0092] In the above-mentioned method for dynamically setting the intelligent pure water replenishment level, when the water usage mode of the current batch is determined to be the relay water usage mode, the processing time of the single batch of the water washing process of each production line in the current batch is summed to obtain the time window, ensuring that the water consumption prediction result can always have the best foresight and decision relevance under different production loads and rhythms.

[0093] In some implementations, please refer to Figure 6 Based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit water replenishment level, and the fixed upper limit safety level, predictions are made to determine the lower limit water replenishment threshold and the stop-up threshold for the time window of the current batch. This can include the following steps: S610. If the water usage pattern of the current batch is determined to be the relay water usage pattern, the single batch process water usage of each production line in the current batch is summed to obtain the smooth water usage.

[0094] S620. Take the maximum value of the single-batch process water consumption of each production line in the current batch as the emergency water consumption.

[0095] S630. Based on emergency water consumption and fixed water replenishment lower limit level, determine the water replenishment lower limit threshold for the time window.

[0096] S640. Based on the gradual water consumption and the fixed safety upper limit liquid level, determine the stop upper limit threshold of the time window.

[0097] Specifically, if the water usage pattern for the current batch is determined to be a relay water usage pattern, the single-batch process water consumption of each production line in the current batch is summed, and the result is defined as the smooth water consumption, serving as a reference for subsequent water replenishment strategies. Simultaneously, the single-batch process water consumption of each production line within the current batch is identified, and the maximum single-batch process water consumption of all production lines in the current batch is extracted as the emergency water consumption. Next, to determine the lower limit threshold for water replenishment within the time window, the emergency water consumption is compared with the fixed lower limit level of the pure water tank, and the larger of the two is taken as the lower limit threshold for water replenishment within the fixed time window. On the other hand, to determine the upper limit threshold for stopping water replenishment within the time window, the smooth water consumption is compared with the fixed safe upper limit level of the pure water tank, and the smaller of the two is taken as the upper limit threshold to prevent the risk of overflow due to excessively high tank levels, and to optimize water replenishment control while ensuring safety, avoiding unnecessary frequent start-ups and shutdowns.

[0098] For example, in the relay water usage mode, the single-batch process water usage of production line A (600L), production line B (700L), and production line C (750L) is summed to obtain a smooth water usage of 2050L. The maximum value of 750L among the single-batch process water usages of each production line in the current batch is taken as the emergency water usage.

[0099] Then, the emergency water consumption of 750L and the fixed water replenishment lower limit of 800L are compared, and the larger value of the two, the fixed water replenishment lower limit of 800L, is determined as the water replenishment lower limit threshold of the time window.

[0100] Comparing the gradual water consumption of 2050L and the fixed safety upper limit of 5000L, the smaller value of the gradual water consumption of 2050L is determined as the stop upper limit threshold of the time window.

[0101] The final water replenishment limit was 800L and the stop limit was 2050L within a 6-hour time window, balancing water supply safety and economy.

[0102] In the aforementioned method for dynamically setting the intelligent pure water replenishment level, when the current batch's water usage mode is determined to be a relay water usage mode, the single-batch process water consumption of each production line in the current batch is summed to obtain the gradual water consumption. The maximum value among the single-batch process water consumptions of each production line in the current batch is taken as the emergency water consumption. Based on the emergency water consumption and the fixed lower limit replenishment level, the lower limit threshold for the time window is determined. Based on the gradual water consumption and the fixed upper limit safety level, the upper limit threshold for the time window is determined. This method can dynamically adjust the replenishment threshold according to the actual water usage mode, achieving efficient and stable water supply management. This method does not require large amounts of water storage; the chiller only operates for a short time after replenishment, thereby significantly reducing energy consumption while ensuring no risk of water outages during normal use.

[0103] In some implementations, please refer to Figure 7 Based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch, the time window for the current batch is determined, which may include the following steps: S710. If the water usage mode for the current batch is determined to be the normal mode, then the maximum value h of the single-batch processing time for the water washing process of each production line in the current batch is calculated. max-n The target processing time is determined.

[0104] S720, based on the preset general coefficient K2 and the target general processing time h max-n Determine the time window T n .

[0105] In some cases, the production plan does not identify obvious simultaneous or relay water usage characteristics. This means that the water usage behavior of each production line is relatively independent in time, without concentrated water usage peaks or continuous water demand closely linked to upstream and downstream processes. In this situation, the water usage rhythm of the production line is relatively dispersed, and the overall load is stable, with neither instantaneous surges in water usage nor continuous loads. This is a normal operating condition in production. In other words, apart from intensive water usage patterns and relay water usage patterns, all other situations are classified as general patterns.

[0106] Specifically, if the water usage mode for the current batch is determined to be the general mode, the single-batch processing time of the water washing process for each production line in the current batch is identified, and the maximum value h is selected. max-n The target general processing time forms the basis for subsequent time window calculations. Then, based on the preset general coefficient K2 and the target general processing time h... max-n Calculate a time window T n This window is used to dynamically adjust the forecast range of water demand. The setting of the time window aims to balance the accuracy and economy of forecasting: a window that is too small may lead to insufficient response to short-term sudden demand, while a window that is too large may introduce unnecessary lag or waste of resources. By reasonably configuring the time window, the water replenishment mechanism can be driven to achieve balanced and on-demand water supply, avoiding excessive or delayed water replenishment. Among them, the preset general coefficient K2 is an adjustable parameter used to balance the forecast accuracy between short-term urgent demand and medium- and long-term stable demand. Under normal water usage patterns, short-term demand fluctuations are small, while medium- and long-term trends are relatively stable. Therefore, the value of the preset general coefficient K2 needs to be adapted to this characteristic, so that the forecasting model can quickly respond to occasional small changes while maintaining accurate tracking of the overall stable trend, thereby ensuring that the system always operates in an efficient and economical state under normal conditions.

[0107] A negative correlation is established between the preset general coefficient and the maximum value of the single-batch processing time in the washing process of the production line. This ensures a precise match between process parameters and the time window, preventing the window from being unreasonably expanded when the processing time is long. When the maximum value of the single-batch processing time in the washing process of the production line is long, the water usage cycle of a single production line is correspondingly extended, and the start-up times of each production line naturally tend to be more dispersed. In this case, there is no need to expand the time window with a high multiplier coefficient. Conversely, when the maximum value of the single-batch processing time in the washing process of the production line is short, the frequency of production line start-up increases, and the coefficient needs to be appropriately increased to cover possible short-interval start-up situations.

[0108] In some implementations, the maximum processing time per batch in the washing process of the production line is determined as Tstandard (Tstandard in hours). Then, a preset general coefficient is calculated by setting a base coefficient according to Tstandard and combining this with linear fine-tuning. The preset general coefficient K2 is determined using the following formula: K2=Cm×T_standard It should be noted that the constant term C and the coefficient m in the above formula are adjustable parameters, and their specific values ​​can be adaptively adjusted according to actual production conditions, production line type, or historical operating data. In practical applications, the preset range of the general coefficient K2 is limited to greater than 1. The maximum value T of the single-batch processing time in the water washing process of the production line is determined by the process characteristics of the lithium battery cathode material water washing process, and the single-batch processing time is typically 1 to 5 hours. The coefficient m, as a linear adjustment factor for T, maintains process coordination with the adjustment factor in the intensive mode, with a value of 0.1 ≤ m ≤ 0.3. If the coefficient m is adjusted, the constant term C must be adjusted simultaneously to ensure the stability of K2.

[0109] The hard constraint K2>1 can be transformed to obtain C>1+m×T_standard. Combining the upper and lower limits of T_standard (1~5 hours) and m (0.1~0.3), the critical value of the constant term C can be calculated.

[0110] When m takes the maximum value of 0.3 and T takes the maximum value of 5 hours, we get C>1+0.3×5=2.5, which is the actual critical lower limit of C. If C is lower than 2.5, K2≤1 will occur under some extreme process conditions, causing the water replenishment time window to fail and the water demand to be unmet.

[0111] When m takes the minimum value of 0.1 and T takes the minimum value of 1 hour, we get C>1+0.1×1=1.1. This value is only a mathematical lower limit and has no technological significance in actual production.

[0112] Therefore, the core reasonable range of C is not simply based on the lower limit of mathematics, but needs to be combined with the characteristics of general water use patterns and the control requirement of K2>1. Finally, the actual commonly used reasonable range of C is determined to be 3.0 to 4.0. This range can ensure that when T is within 1 to 5 hours and m is within 0.1 to 0.3 throughout the entire process, K2 is always within the reasonable range of 2.0 to 3.5. This achieves the control objective that the water replenishment time window in general mode can fully cover water demand without gaps, while avoiding the redundant energy consumption caused by over-prediction.

[0113] Specifically, if we take the lower limit of C as 3.0, then K2 = 3.0 - m × T_standard. Under the most typical working conditions (for example, when m is 0.2 and T_standard is 5 hours, K2 is approximately 2.0), the corresponding time window is approximately 10 hours. This window provides a 5-hour buffer time for the long-term washing process, which not only covers the entire process itself but also effectively copes with sudden production anomalies such as equipment failure and material fluctuations, perfectly matching the buffering needs of long-term processes.

[0114] If we take the upper limit of C as 4.0, then K2 = 4.0 - m × T_standard. Under typical operating conditions, K2 is approximately 3.0, corresponding to a time window of about 15 hours. This range can cover the total water demand of 5-hour long-running processes and other dispersed production lines, while avoiding unnecessary energy waste due to over-prediction. It is the optimal solution that balances water security and energy conservation.

[0115] In summary, by taking the value of the constant term C between 3.0 and 4.0, and coordinating the adjustment of m between 0.1 and 0.3 and T between 1 and 5 hours, it can be ensured that the water replenishment time window in the general mode is always in a reasonable and effective state.

[0116] For example: if the maximum processing time of a single batch in the washing process of the production line, i.e., T_standard = 3h, then the preset general coefficient K2 = 3.5 - 0.2 × 3 = 2.9; if the maximum processing time of a single batch in the washing process of the production line, i.e., T_standard = 2h, then the preset general coefficient K2 = 3.5 - 0.2 × 2 = 3.1; if the maximum processing time of a single batch in the washing process of the production line, i.e., T_standard = 4h, then the preset general coefficient K2 = 3.5 - 0.2 × 4 = 2.7.

[0117] For example, based on the production plan, the processing time for a single batch of the washing process in production line A is determined to be 2 hours, and the process water consumption per batch in production line A is 600L; the processing time for a single batch of the washing process in production line B is 1 hour, and the process water consumption per batch in production line B is 700L; the processing time for a single batch of the washing process in production line C is 3 hours, and the process water consumption per batch in production line C is 750L. The fixed lower limit level for replenishing the pure water tank is 800L, and the fixed upper limit level for safe operation of the pure water tank is 5000L.

[0118] Based on the production plan, the start time of each batch on each production line is determined. The MES shows that a batch on production line A starts the water washing process at 9:00 AM, a batch on production line B starts the water washing process at 2:00 PM, and a batch on production line C starts the water washing process at 10:00 AM the next day. The water usage rhythms of the three are highly dispersed, which is judged as a normal mode.

[0119] In the normal mode, the maximum value of 3h in the single batch processing time of the water washing process of each production line in the current batch is determined as the target normal processing time; then the preset normal coefficient 2.9 and the target normal processing time 3h are multiplied to determine the time window as 8.7h.

[0120] In the above-mentioned method for dynamically setting the intelligent pure water replenishment level, when the water usage mode of the current batch is determined to be the general mode, the maximum value of the single batch processing time of the water washing process of each production line in the current batch is determined as the target processing time. Based on the preset general coefficient and the target processing time, the time window is determined to ensure that the water consumption prediction results can always have the best foresight and decision relevance under different production loads and rhythms.

[0121] In some implementations, please refer to Figure 8 Based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit water replenishment level, and the fixed upper limit safety level, predictions are made to determine the lower limit water replenishment threshold and the stop-up threshold for the time window of the current batch. This can include the following steps: S810. If the water usage mode of the current batch is determined to be the general mode, the maximum and second maximum values ​​of the single-batch process water usage of each production line in the current batch are summed to obtain the average water usage.

[0122] S820. Take the maximum value of the single-batch process water consumption of each production line in the current batch as the emergency water consumption.

[0123] S830. Based on emergency water consumption and fixed lower limit water supply level, determine the time window T. n The lower limit threshold for water replenishment.

[0124] S840, Based on a gradual water consumption and a fixed upper limit of the safe liquid level, determine the time window T. n The threshold for stopping online access.

[0125] Specifically, assuming the current batch's water usage pattern is determined to be the normal mode, the single-batch process water consumption of each production line within the current batch is identified. First, the maximum and second-largest values ​​of these single-batch process water consumptions are extracted, and these two values ​​are summed. The result is defined as the smooth water consumption, serving as a reference for subsequent water replenishment strategies. Simultaneously, the maximum value among the single-batch process water consumptions of all production lines in the current batch is extracted separately as the emergency water consumption. Next, to determine the lower limit threshold for water replenishment within the time window, the emergency water consumption is compared with the fixed lower limit level of the pure water tank, and the larger of the two values ​​is taken as the fixed time window T. n The lower limit threshold for water replenishment. On the other hand, in order to determine the time window T nThe upper limit threshold for stopping water replenishment is determined by comparing the gradual water consumption with the fixed safe upper limit liquid level of the pure water tank, and taking the smaller value as the upper limit threshold to prevent the water level in the tank from being too high and causing the risk of overflow. Under the premise of ensuring safety, the water replenishment control is optimized to avoid unnecessary frequent start-stop.

[0126] For example, in the normal mode, the maximum value of 750L and the second maximum value of 700L in the single-batch process water consumption of each production line in the current batch are summed to obtain a smooth water consumption of 1450L. The maximum value of 750L in the single-batch process water consumption of each production line in the current batch is taken as the emergency water consumption.

[0127] Then, the emergency water consumption of 750L and the fixed water replenishment lower limit of 800L are compared, and the larger value of the two, the fixed water replenishment lower limit of 800L, is determined as the water replenishment lower limit threshold of the time window.

[0128] Comparing the gradual water consumption of 1450L and the fixed safety upper limit of 5000L, the smaller value of the gradual water consumption of 1450L is determined as the stop upper limit threshold of the time window.

[0129] The final water replenishment limit was set at 800L and the stop limit at 1450L within a time window of 8.7h, balancing water supply safety and economy.

[0130] In the above-mentioned method for dynamically setting the intelligent pure water replenishment level, when the water usage mode of the current batch is determined to be the normal mode, the maximum and second-largest values ​​of the single-batch process water consumption of each production line in the current batch are summed to obtain the smooth water consumption. The maximum value of the single-batch process water consumption of each production line in the current batch is taken as the emergency water consumption. Based on the emergency water consumption and the fixed replenishment lower limit level, the time window T is determined. n The lower limit threshold for water replenishment is determined based on a gradual water consumption and a fixed upper limit level for safety, and the time window T is determined accordingly. n The method allows for the dynamic adjustment of the water replenishment threshold based on actual water usage patterns, achieving efficient and stable water supply management. This method eliminates the need for large water storage; the chiller only operates for a short time after water replenishment, significantly reducing energy consumption while ensuring uninterrupted water supply for regular use.

[0131] In some implementations, the method may further include: replenishing the pure water tank with water up to the stop threshold before the current batch begins.

[0132] Specifically, during the process of supplying water from the pure water tank to the production line, water supply will continue as long as there is water in the tank. However, the amount of water at this time may not be sufficient to meet the entire production batch's needs. Simultaneously, if water replenishment is performed during the supply period, the treated, compliant low-temperature water will mix with the newly added water that has not yet met the standards, potentially leading to substandard water quality. To avoid this and ensure the safety and stability of production water, it is necessary to ensure that the pure water tank contains sufficient water to support the entire batch's production before the current batch starts. Therefore, before actual production begins, the pure water tank should be replenished until the water level reaches the set stop-replenishment threshold to ensure that the water stored in the tank is sufficient and meets the requirements before the batch is executed.

[0133] In the above-mentioned intelligent pure water replenishment level dynamic setting method, before the start of the current batch, water is replenished to the pure water tank up to the stop threshold, ensuring that the pure water tank stores enough water to support the production of the entire batch, thereby avoiding the need to replenish water midway due to insufficient water supply; at the same time, by completing the water replenishment in advance, the risk of qualified low-temperature water and unqualified replenishment water being mixed during the water supply period is eliminated, ensuring the quality stability and process safety of the production water.

[0134] In some implementations, please refer to Figure 9 This includes the step of replenishing the pure water tank to the stop threshold before the current batch begins, and prohibiting the water replenishment operation after the current batch begins. The steps are as follows: S910. Obtain the current water level value when the pure water tank is not in a water supply state.

[0135] S920. If the current water level is lower than the lower limit threshold for water replenishment, replenish the pure water tank until the upper limit threshold for stopping water replenishment is reached.

[0136] S930. When the current water level is higher than the lower limit of water replenishment but lower than the upper limit of the stop limit, replenish the pure water tank with water up to the upper limit of the stop limit.

[0137] Specifically, a strict interlocking logic is established to ensure that the replenishment operation of the pure water tank and the water supply operation to the production line are mutually exclusive: when the pure water tank is in the replenishment state, all water requests from the production line will be rejected, that is, water supply is not allowed during the replenishment process; conversely, when the pure water tank is supplying water to any production line, the replenishment operation is prohibited. Through this interlocking mechanism, the risk of mixing qualified low-temperature water with substandard replenishment water is eliminated, while dynamic control accelerates water circulation to ensure uniform and stable water temperature.

[0138] When the pure water tank is not supplying water, the current water level is acquired and compared with the lower water replenishment threshold and the upper stop threshold. If the current water level is below the lower water replenishment threshold, a water replenishment operation is automatically initiated, continuously replenishing the pure water tank until the water level reaches the upper stop threshold, at which point replenishment stops. If the current water level is above the lower water replenishment threshold but below the upper stop threshold, the same water replenishment operation is performed, replenishing the water level to the upper stop threshold before stopping. It should be noted that the water replenishment device rejects all water requests.

[0139] In some implementations, a "sprint" water replenishment can be performed at the maximum permissible flow rate, so that the level in the pure water tank can reach the stop upper limit threshold before the current batch begins.

[0140] In the above-mentioned intelligent pure water replenishment level dynamic setting method, when the pure water tank is not in a water supply state, the current water level value is obtained. If the current water level value is lower than the replenishment lower limit threshold, water is replenished to the pure water tank until the stop upper limit threshold is reached. If the current water level value is higher than the replenishment lower limit threshold but lower than the stop upper limit threshold, water is replenished to the pure water tank until the stop upper limit threshold is reached. With the dual verification of dynamic replenishment lower limit and water level before water supply, the risk of water outage is fundamentally eliminated, ensuring the safe and stable operation of the system.

[0141] In some implementations, please refer to Figure 10 The method may also include the following steps: S1010: When the production line requests water supply, obtain the current water temperature of the pure water tank.

[0142] S1020. If the current water temperature meets the water temperature standard, obtain the current water level value.

[0143] S1030. If the current water level is greater than or equal to the requested water consumption, the pure water tank is allowed to supply water to the production line.

[0144] Specifically, when a production line requests water supply, the current water temperature of the pure water tank is first obtained. Then, it is determined whether the obtained current water temperature meets the preset water temperature compliance conditions. If it does not meet the water temperature compliance conditions, the pure water tank is refused water supply to the production line. If it meets the water temperature compliance conditions, the current water level in the pure water tank is further obtained. If the current water level is confirmed to be less than the water volume requested by the production line, the pure water tank is refused water supply to the production line. If the current water level is confirmed to be greater than or equal to the water volume requested by the production line, the pure water tank is allowed to supply water to the production line. It should be noted that the calculation method for the requested water volume varies depending on the production line request mode: if it is a single production line requesting water, the requested water volume is the single-batch process water volume of the production line in this batch of washing processes; if multiple production lines request water simultaneously, the requested water volume is the sum of the single-batch process water volumes of each production line.

[0145] In some implementations, the average of the water temperatures measured at multiple points within the pure water tank can be taken as the current water temperature of the pure water tank. In other implementations, the water temperature at a single representative measuring point within the pure water tank can be selected as the current water temperature of the pure water tank.

[0146] In the above-mentioned intelligent pure water replenishment level dynamic setting method, when the production line requests water supply, the current water temperature of the pure water tank is obtained. If the current water temperature meets the water temperature standard, the current water level value is obtained. If the current water level value is greater than or equal to the requested water volume, the pure water tank is allowed to supply water to the production line, which effectively avoids water supply interruption due to insufficient water temperature or water level, thereby ensuring the continuity and reliability of the water supply process.

[0147] In some implementations, the method may further include: if the pure water tank is not replenished to the stop threshold before the start of the current batch, issuing an early warning and delaying the start time of the current batch until the water is replenished to the stop threshold.

[0148] Specifically, before the start of the current batch, the prediction module dynamically assesses the required time for water replenishment based on the current real-time level of the pure water tank, the water replenishment flow rate, and the stop-up threshold. If the prediction module determines that even if water replenishment is initiated immediately, the pure water tank level cannot be raised to the stop-up threshold before the scheduled start time of the current batch, an early warning mechanism will be automatically triggered. This early warning signal will be simultaneously sent to the Manufacturing Execution System (MES) and the Batch Control System (BATCH). The systems will request a delay in the start time of the current batch, utilizing the resulting short time window to prioritize water replenishment to the pure water tank. During this period, water replenishment will continue until the pure water tank level rises and reaches the stop-up threshold, thereby fundamentally ensuring water supply safety and avoiding production line operational risks due to insufficient water supply. Once the water replenishment meets the target, the water supply signal is released, allowing the production line to start normally according to the new sequence.

[0149] In the above-mentioned intelligent pure water replenishment level dynamic setting method, if the pure water tank is not replenished to the stop threshold before the start of the current batch, an early warning will be issued and the start time of the current batch will be delayed until the water replenishment reaches the stop threshold, so as to ensure water supply safety and avoid production line operation risks caused by insufficient water supply.

[0150] This specification provides a pure water intelligent water replenishment system, characterized in that the liquid level setting of the pure water intelligent water replenishment system is implemented based on any one of the above-mentioned pure water intelligent water replenishment liquid level dynamic setting methods, and the system includes: The main pure water tank is used to supply water to the production line.

[0151] Specifically, based on the production plan, the planned start time for each batch of a production line, the processing time for each batch of the washing process on each production line, the process water consumption for each batch of a production line, the fixed lower limit level of the main pure water tank, and the fixed upper limit level of the main pure water tank are determined. The production plan includes at least one production line. Based on the planned start time for each batch of a production line, the water consumption pattern for the current batch is determined. Combining this water consumption pattern with the processing time for each batch of the washing process on each production line for the current batch, the time window for the current batch is further determined. Based on the water consumption pattern of the current batch, the process water consumption for each batch of a production line for the current batch, the fixed lower limit level of the water supply, and the fixed upper limit level of the safety tank, predictions are made to determine the lower limit threshold of the water supply and the stop-up threshold for the time window of the current batch. Before the current batch begins, water is added to the main pure water tank to the stop-up threshold. When the production line requests water supply, the current water temperature of the main pure water tank is obtained. If the current water temperature meets the water temperature standard requirements, the current water level value is obtained. If the current water level is greater than or equal to the requested water consumption, the main pure water tank is permitted to supply water to the production line.

[0152] The backup pure water tank is connected to the main pure water tank via a main / backup water tank connecting valve. The backup pure water tank is used to store water that meets the required water temperature, and when the main pure water tank needs to be replenished, it outputs water that meets the required water temperature to the main pure water tank via the main / backup water tank connecting valve.

[0153] Specifically, the main pure water tank and the backup pure water tank are connected by a main / backup water tank connecting valve. The backup pure water tank stores pure water that meets the process water temperature standard, and replenishes the main pure water tank with qualified water through the main / backup water tank connecting valve when the main pure water tank needs to be replenished. To ensure water quality safety, the main / backup water tank connecting valve is only allowed to open when the water temperature in the backup pure water tank reaches the process set standard, to prevent substandard water from entering the main pure water tank.

[0154] When the main pure water tank supplies water to the production line, the coordinated control and execution layer can open the main and backup water tank connecting valve, allowing the backup pure water tank to simultaneously replenish qualified water to the main pure water tank. This replenishment flow rate is dynamically adjusted based on the rate of decrease in the main pure water tank level to ensure that the main pure water tank level never falls below the lower replenishment threshold for the current batch's time window and never exceeds the upper stop threshold, thereby eliminating the risk of abnormal water temperature or insufficient water volume that might occur from simply supplying and replenishing water from the main tank simultaneously. When the main pure water tank is not supplying water, it can be replenished directly through its own replenishment valve, or qualified water from the backup pure water tank can be used first to reduce the cooling energy consumption of the main pure water tank.

[0155] It also features a liquid level protection mechanism: when the liquid level in the backup pure water tank falls below its set low liquid level threshold, water is preferentially replenished to the backup pure water tank, while water replenishment to the main pure water tank is suspended, ensuring that the backup pure water tank always maintains an emergency reserve of water. If the main pure water tank malfunctions, such as abnormal water temperature or a failed liquid level sensor, the system can switch valves to directly supply water to the production line from the backup pure water tank, ensuring production continuity.

[0156] The backup pure water tank serves as a qualified water preparation and storage unit, receiving only room temperature pure water, which is then cooled to the process standard via an independent plate heat exchanger (the water temperature compliance judgment logic is consistent with that of the main pure water tank). In normal mode, the backup low liquid level threshold of the backup pure water tank is set to the maximum water consumption per batch of process water for each production line; the backup stop-replenishment upper limit of the backup pure water tank is set to the maximum single-time replenishment volume of the main pure water tank, i.e., the difference between the main pure water tank's stop upper threshold and replenishment lower threshold. After system startup, the backup pure water tank first autonomously replenishes water and cools until the liquid level reaches the backup stop-replenishment upper limit and the water temperature meets the standard, then maintains this state and enters standby mode. In intensive water use mode, the backup stop-replenishment upper limit of the backup pure water tank is set to 30% of the main pure water tank's stop upper threshold as an emergency reserve. In relay water use mode, the backup stop-replenishment upper limit of the backup pure water tank is set to the maximum water consumption per batch of process water for each production line.

[0157] It should be noted that, in terms of hardware configuration, a new standby pure water tank with the same specifications as the main pure water tank, an independent plate heat exchanger for replenishing water in the standby pure water tank, two level sensors installed in the main pure water tank and the standby pure water tank respectively, two water temperature sensors, and three electric valves, namely a standby pure water tank replenishment valve for controlling water replenishment in the standby pure water tank, a main and standby pure water tank connecting valve for connecting the main pure water tank and the standby pure water tank, and a standby pure water tank drain valve for draining water from the standby pure water tank.

[0158] Regarding connectivity, the main pure water tank retains its original structure, including its water supply valve, water pump, and connection channel to the subsequent washing reactor. The standby pure water tank connects to a room temperature pure water source via an independent plate heat exchanger, and its water intake is controlled by the standby water tank's water supply valve. The main and standby pure water tanks are interconnected via a main / standby water tank connecting valve, the opening and closing of which is centrally managed by the collaborative control and execution layer.

[0159] In the above implementation, the main pure water tank supply and the backup pure water tank replenishment are carried out simultaneously, achieving uninterrupted water replenishment and effectively improving replenishment efficiency. The water stored in the backup pure water tank is pre-prepared and maintained at a qualified water quality, preventing localized water temperature fluctuations when replenished to the main pure water tank, thus ensuring stable system water temperature. The dual pure water tank design has independent operating capabilities, capable of handling single pure water tank failures or maintenance, minimizing the risk of production interruptions and significantly improving water supply reliability. The backup pure water tank only activates cooling and preparation when the liquid level is below a set value; the main pure water tank does not require frequent cooling and replenishment, effectively reducing overall system energy consumption compared to the single-tank mode and achieving energy optimization.

[0160] This specification also provides an architecture for a pure water intelligent replenishment level dynamic setting system. Please refer to [link / reference]. Figure 11 First, the information analysis and prediction module, through its task order parsing unit, reads the production task orders to be executed from the Manufacturing Execution System (MES) based on the data interaction layer. The parsing unit extracts the process formula from the task order to determine the process water consumption per batch for each production line, extracts the planned time to determine the planned start time for each batch for each production line, and extracts the batch quantity to calculate the total water consumption.

[0161] Meanwhile, the information analysis and prediction module continuously monitors the status of the batch control system (BATCH) through the data interaction layer. When the batch control system performs a batch interruption operation, it triggers a signal to the information analysis and prediction module, marking the end of the previous production cycle and the start of the next cycle. This module obtains the batch execution status in real time to calibrate the deviation between the actual production progress and the planned progress.

[0162] Based on the planned start time of each batch on each production line, the water usage pattern for the current batch is determined. Considering that actual production may experience time deviations due to equipment cleaning, material preparation, etc., the information analysis and prediction module activates an adaptive window unit. Based on the water usage pattern of the current batch and the single-batch processing time of the washing process on each production line for the current batch, the time window for the current batch is determined.

[0163] The dynamic liquid level setting module predicts and determines the lower limit threshold for water replenishment and the upper limit threshold for stopping the current batch based on the water usage pattern of the current batch, the single batch process water consumption of each production line in the current batch, the fixed lower limit liquid level for water replenishment, and the fixed upper limit liquid level for safety.

[0164] The collaborative control and execution layer receives the lower and upper thresholds for water replenishment, the dynamic threshold, and interlock commands for the current batch's time window. Based on these parameters, it precisely controls actuators such as the water replenishment valve and water supply pump. Specifically, the water replenishment control layer monitors the water level and temperature in real time using level and temperature sensors installed in the pure water tank. When the water level drops to the lower threshold or exceeds the lower threshold but falls below the upper threshold, the water replenishment valve is opened to replenish water. When the water level reaches the upper threshold, the water replenishment valve is closed, ensuring that the water quantity and quality in the pure water tank meet process requirements. The water supply control layer, based on commands from the water supply permission judgment module, comprehensively assesses whether the current water level and temperature in the pure water tank meet preset conditions upon receiving a water supply request from the production line. Only when the conditions are met is the water supply pump activated to supply water to the washing tank, thus achieving safe and efficient water supply operations. The entire control process is also constrained by interlock commands to prevent misoperation or abnormal operating conditions.

[0165] This specification provides a pure water intelligent replenishment level dynamic setting device 1200. Please refer to [link / reference]. Figure 12 The pure water intelligent water replenishment level dynamic setting device 1200 includes: a basic parameter determination module 1210, a water use mode determination module 1220, a time window determination module 1230, and a water replenishment threshold determination module 1240.

[0166] The basic parameter determination module 1210 is used to identify based on the production plan and determine the single batch plan start time of each production line, the single batch processing time of the water washing process of each production line, the single batch process water consumption of each production line, the fixed lower limit liquid level of the pure water tank and the fixed upper limit liquid level of the pure water tank, wherein the production plan includes at least one production line. The water usage pattern determination module 1220 is used to determine the water usage pattern of the current batch based on the planned start time of each batch for each production line. The time window determination module 1230 is used to determine the time window of the current batch based on the water usage pattern of the current batch and the single batch processing time of the water washing process of each production line of the current batch. The water replenishment threshold determination module 1240 is used to predict and determine the water replenishment lower limit threshold and the stop-on-line threshold of the time window of the current batch based on the water usage pattern of the current batch, the single batch process water consumption of each production line in the current batch, the fixed water replenishment lower limit liquid level and the fixed safety upper limit liquid level.

[0167] For a detailed description of the intelligent pure water replenishment level dynamic setting device, please refer to the description of the intelligent pure water replenishment level dynamic setting method above, which will not be repeated here.

[0168] This specification provides a computer device including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the method steps described above.

[0169] This specification provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method in any of the above embodiments.

[0170] One embodiment of this specification provides a computer program product including instructions that, when executed by a processor of a computer device, enable the computer device to perform the steps of the method described in any of the above embodiments.

[0171] In some embodiments, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 13 As shown, the computer device includes a processor, memory, communication interface, display screen, and input devices connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, carrier networks, NFC (Near Field Communication), or other technologies. When executed by the processor, the computer program implements a method for dynamically setting the intelligent pure water replenishment level. The display screen can be an LCD screen or an e-ink screen. The input devices can be a touch layer covering the display screen, buttons, a trackball, or a touchpad on the computer device's casing, or an external keyboard, touchpad, or mouse.

[0172] Those skilled in the art will understand that Figure 13 The structures shown are merely block diagrams of some structures related to the solutions disclosed in this specification, and do not constitute a limitation on the computer device to which the solutions disclosed in this specification are applied. Specifically, the computer device may include more or fewer components than shown in the figures, or combine certain components, or have different component arrangements.

[0173] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be specifically implemented in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Furthermore, computer-readable media can even be paper or other suitable media on which programs can be printed, because programs can be obtained electronically, for example, by optically scanning the paper or other media, followed by editing, interpreting, or otherwise processing as necessary, and then stored in computer memory.

Claims

1. A pure water intelligent water replenishment liquid level dynamic setting method, characterized in that, The method includes: Identification is based on the production plan, which determines the planned start time of a single batch for each production line, the processing time of a single batch of the washing process for each production line, the process water consumption of a single batch for each production line, the fixed lower limit of the pure water tank and the fixed upper limit of the pure water tank, wherein the production plan includes at least one production line. Based on the planned start time of each batch for each production line, the water usage pattern for the current batch is determined; Based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch, the time window for the current batch is determined. Based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit of water replenishment level, and the fixed upper limit of safety level, the lower limit of water replenishment and the stop-on-line threshold of the time window for the current batch are predicted and determined.

2. The method of claim 1, wherein, The determination of the water usage pattern for the current batch based on the planned start time of each production line includes: The maximum value h of the single-batch processing time in the water washing process of each production line max is determined as the target processing time; Set the basic density coefficient to K0, and 1.

0. <K0<1.2; determining a dense time length K0 based on the base dense coefficient and the target processing time h max ; determining an earliest single batch plan start time T based on single batch plan start times of lines included in each batch 早 ; based on the earliest single-batch plan start time T 早 and the intensive time length K0 h max , determine the intensive time interval of each batch [T 早 , T 早 +K0 h max ]; When the start time of the single-batch plan of at least two production lines falls into the intensive time interval [T 早 , T 早 +K0 h max ], the water use mode is determined as an intensive water use mode. or Based on the planned start time of each batch for each production line and the processing time of each batch of the water washing process for each production line, the water usage time range for each batch of each production line is determined. When the water usage time range of a single batch of at least two production lines overlaps or is continuous, the water usage pattern is determined to be a relay water usage pattern.

3. The method according to claim 2, characterized in that, The determination of the time window for the current batch based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch includes: determining that the water usage pattern of the current batch is a dense water usage pattern max-p determining a target dense processing time; based on the intensive coefficient K1 and the target intensive processing time h max-p , determine the time window T p ; Where, K1 = K0 × (1 + m × (N - 1)); N is the number of production lines whose single batch planned start time falls within the dense time interval, N ≥ 2; m is a coefficient, 0.1 ≤ m ≤ 0.3; T p =K1 h max-p ; The method of predicting and determining the water replenishment lower limit threshold and the stop-start threshold for the time window of the current batch based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit water replenishment level, and the fixed upper limit safety level includes: If the water usage pattern of the current batch is determined to be an intensive water usage pattern, the single-batch process water usage of each production line in the current batch is summed to obtain the emergency water usage. Based on the emergency water consumption and the preset water safety threshold, the gradual water consumption is obtained; determining the time window T based on the emergency water quantity and the fixed refill lower limit level p of the refill lower limit threshold; determining the time window T based on the flat water consumption and the fixed safe upper level p of the stop online threshold.

4. The method according to claim 2, characterized in that, The determination of the time window for the current batch based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch includes: If the water usage pattern of the current batch is determined to be the relay water usage pattern, the processing time of each batch of the water washing process of each production line in the current batch is summed to obtain the time window. The method of predicting and determining the water replenishment lower limit threshold and the stop-start threshold for the time window of the current batch based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit water replenishment level, and the fixed upper limit safety level includes: If the water usage pattern of the current batch is determined to be a relay water usage pattern, the single batch process water usage of each production line in the current batch is summed to obtain the smooth water usage. The maximum value of the single-batch process water consumption for each production line in the current batch is taken as the emergency water consumption. Based on the emergency water consumption and the fixed lower limit water replenishment level, the lower limit threshold for water replenishment in the time window is determined. Based on the gradual water consumption and the fixed safety upper limit liquid level, the stop threshold for the time window is determined.

5. The method according to claim 2, characterized in that, The determination of the time window for the current batch based on the water usage pattern of the current batch and the single-batch processing time of the water washing process on each production line of the current batch includes: In a case where it is determined that the water use mode of the current batch is the general mode, the maximum value h of the single batch processing time of the water washing process of each production line of the current batch max-n determining a target general processing time; based on a preset general coefficient K2 and the target general processing time h max-n , determine a time window T n ; The method of predicting and determining the water replenishment lower limit threshold and the stop-start threshold for the time window of the current batch based on the water usage pattern of the current batch, the single-batch process water consumption of each production line in the current batch, the fixed lower limit water replenishment level, and the fixed upper limit safety level includes: If the water usage pattern of the current batch is determined to be the normal mode, the maximum and second maximum values ​​of the single-batch process water usage of each production line in the current batch are summed to obtain the average water usage. The maximum value of the single-batch process water consumption for each production line in the current batch is taken as the emergency water consumption. determining the time window T based on the emergency water quantity and the fixed refill lower limit level n of the refill lower limit threshold; determining the time window T based on the flat water consumption and the fixed safe upper level n of the stop upper threshold.

6. The method according to claim 1, characterized in that, The method further includes a step of replenishing the pure water tank with water up to the stop threshold before the start of the current batch, the step including: Obtain the current water level value when the pure water tank is not in water supply mode; If the current water level is lower than the lower limit threshold for water replenishment, water is added to the pure water tank until the upper limit threshold for stopping is reached; If the current water level is higher than the lower water replenishment threshold but lower than the upper stop threshold, water is added to the pure water tank until the upper stop threshold is reached.

7. The method according to claim 1, characterized in that, The method further includes: When the production line requests water supply, obtain the current water temperature of the pure water tank; If the current water temperature meets the standard conditions, obtain the current water level value; If the current water level is greater than or equal to the requested water volume, the pure water tank is permitted to supply water to the production line.

8. The method according to claim 6, characterized in that, The method further includes: If the pure water tank is not replenished to the stop threshold before the start of the current batch, an early warning will be issued and the start time of the current batch will be delayed until the water level reaches the stop threshold.

9. A pure water intelligent water replenishment system, characterized in that, The liquid level setting of the intelligent pure water replenishment system is implemented based on the intelligent pure water replenishment liquid level dynamic setting method according to any one of claims 1-8, and the system includes: The main pure water tank is used to supply water to the production line; A backup pure water tank is connected to the main pure water tank via a main / backup water tank connecting valve. The backup pure water tank is used to store water that meets the required water temperature, and when the main pure water tank needs to be replenished, it outputs water that meets the required water temperature to the main pure water tank through the main / backup water tank connecting valve.

10. A pure water intelligent replenishment liquid level dynamic setting device, characterized in that, The device includes: The basic parameter determination module is used to identify based on the production plan and determine the single batch start time of each production line, the single batch processing time of the water washing process of each production line, the single batch process water consumption of each production line, the fixed lower limit liquid level of the pure water tank and the fixed upper limit liquid level of the pure water tank, wherein the production plan includes at least one production line. The water usage pattern determination module is used to determine the water usage pattern of the current batch based on the planned start time of each batch for each production line. The time window determination module is used to determine the time window for the current batch based on the water usage pattern of the current batch and the single batch processing time of the water washing process of each production line in the current batch. The water replenishment threshold determination module is used to predict and determine the water replenishment lower limit threshold and the stop-on-line threshold for the time window of the current batch based on the water usage pattern of the current batch, the single batch process water consumption of each production line in the current batch, the fixed water replenishment lower limit liquid level and the fixed safety upper limit liquid level.

11. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 8.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 8.

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