Copper acid concentration automatic monitoring and compensation regulation and control system and method

Abstract

The invention discloses a cupric acid concentration automatic monitoring and compensation regulation and control system, which comprises a cupric acid concentration detection module used for detecting copper ion concentration and hydrogen ion concentration in electrolyte; the error compensation module is used for correcting the detection readings of the copper ion concentration and the hydrogen ion concentration by utilizing a trained error compensation model; the concentration ratio judgment module is used for calculating a copper acid ratio according to the corrected copper ion concentration and hydrogen ion concentration, and identifying that the electrolyte is in a meta-acid state or a meta-copper state when the copper acid ratio deviates from a preset interval; and the liquid supplementing calculation and execution module is used for calculating a real-time concentration gap according to the copper acid ratio and the deviation of a preset interval, calculating the liquid supplementing amount according to the concentration gap and the total volume of the electrolyte, and correspondingly supplementing the liquid. According to the invention, the real-time change of solution components and the real-time liquid supplementing control are reflected in time, the fine adjustment of the liquid adding rhythm and dosage is also realized, and the over-supplementing or oscillation phenomenon is reduced.

Description

Technical Field

[0001] This invention relates to the field of electrolytic copper foil production technology, specifically to an automatic monitoring and compensation control system and method for copper acid concentration. Background Technology

[0002] The concentrations of copper ions and sulfuric acid in the electrolyte directly affect the crystal morphology, current efficiency, copper deposition uniformity, and surface roughness of copper foil. Too low a copper concentration leads to a slower copper deposition rate and a porous surface; too high an acid concentration causes the foil to become brittle, has poor adhesion, and develops mottled spots on the glossy surface.

[0003] Traditional methods of manual periodic sampling and titration measurement suffer from lag and cannot achieve continuous and precise adjustment, exhibiting the following drawbacks:

[0004] 1. Detection lag: It is difficult to reflect real-time changes in solution components in a timely manner;

[0005] 2. Adjustment delay: Relies on human experience and judgment, making it impossible to achieve real-time fluid replacement control;

[0006] 3. Inefficient control: The rhythm and dosage of fluid addition are difficult to adjust precisely, which can easily lead to over-addition or turbulence;

[0007] 4. Inability to provide early warning of anomalies: There is no effective identification and response mechanism for phenomena such as additive interference and conductivity shift. Summary of the Invention

[0008] To overcome the technical problem of the difficulty in continuously and accurately adjusting the concentration of copper acid in existing technologies, this invention provides an automatic monitoring and compensation control system and method for copper acid concentration. By establishing a concentration control system with online detection and automatic feeding closed-loop control, the system can achieve real-time detection and replenishment control of electrolyte components.

[0009] According to one aspect of the present invention, an automatic monitoring and compensation control system for copper acid concentration is provided, comprising: a copper acid concentration detection module for detecting the concentrations of copper ions and hydrogen ions in an electrolyte; an error compensation module for correcting the detection readings of the copper ion concentration and hydrogen ion concentration using a trained error compensation model; a concentration ratio judgment module for calculating the copper acid ratio based on the corrected copper ion concentration and hydrogen ion concentration, and identifying whether the electrolyte is in an acidic or copper-prone state when the copper acid ratio deviates from a preset range; and a replenishment calculation and execution module for calculating the real-time concentration gap based on the deviation between the copper acid ratio and the preset range, and calculating the replenishment amount based on the concentration gap and the total volume of the electrolyte and replenishing accordingly.

[0010] Furthermore, the copper acid concentration detection module is equipped with a combination of two or more concentration detection methods, including conductivity method, potentiometric titration method, UV-Vis colorimetry method or spectroscopy method. The copper acid concentration detection module automatically switches to different concentration detection methods or integrates multiple different concentration detection methods according to the production stage.

[0011] Furthermore, when the copper-acid ratio is higher than the upper limit of the preset range, the electrolyte is determined to be in a copper-prone state, triggering the acid addition adjustment logic; when the copper-acid ratio is lower than the lower limit of the preset range, the electrolyte is determined to be in a acid-prone state, triggering the copper addition adjustment logic.

[0012] Furthermore, the electrolyte replenishment calculation and execution module calculates the target concentration value based on the deviation between the copper-acid ratio and the preset range; obtains the concentration gap based on the difference between the target concentration value and the current concentration value; calculates the total replenishment volume based on the concentration gap and the total electrolyte volume; and performs replenishment using a dynamic adjustment strategy. The dynamic adjustment strategy includes real-time monitoring of the difference between the current concentration and the target concentration value, and automatically reducing the single replenishment volume when the current concentration approaches the target concentration value.

[0013] Furthermore, the error compensation module detects the concentrations of brightener, leveling agent, and chloride ions in the electrolyte; inputs the concentrations of copper ions, hydrogen ions, brightener, leveling agent, and chloride ions into the trained error compensation model; uses the trained error compensation model to remove the influence of the concentrations of brightener, leveling agent, and chloride ions on the concentrations of copper ions and hydrogen ions, and outputs the corrected concentrations of copper ions and hydrogen ions.

[0014] Furthermore, the error compensation model is as follows: In the formula, This represents the corrected copper ion concentration or hydrogen ion concentration. This represents the concentrations of copper ions and hydrogen ions in the electrolyte detected by the copper acid concentration detection module. This represents the shift in copper or hydrogen ion concentration caused by the additives. In the formula, n represents the total number of factors affecting conductivity detection; This represents the concentration of the i-th influencing factor; This represents the weight coefficient of the i-th influencing factor.

[0015] According to one aspect of the present invention, an automatic monitoring and compensation control method for copper acid concentration is provided, comprising:

[0016] The system detects the concentrations of copper ions and hydrogen ions in the electrolyte; corrects the detection readings of the copper ion and hydrogen ion concentrations using a trained error compensation model; calculates the copper-acid ratio based on the corrected copper ion and hydrogen ion concentrations; when the copper-acid ratio deviates from a preset range, it identifies the electrolyte as either acidic or copper-prone; calculates the real-time concentration gap based on the deviation between the copper-acid ratio and the preset range; and calculates the replenishment amount based on the concentration gap and the total electrolyte volume, and replenishes the electrolyte accordingly.

[0017] Furthermore, the detection readings of copper ion concentration and hydrogen ion concentration are corrected using a trained error compensation model, including: detecting the concentrations of brightener, leveling agent, and chloride ion in the electrolyte; inputting the concentrations of copper ion, hydrogen ion, brightener, leveling agent, and chloride ion into the trained error compensation model; using the trained error compensation model to remove the influence of the concentrations of brightener, leveling agent, and chloride ion on the concentrations of copper ion and hydrogen ion, and outputting the corrected concentrations of copper ion and hydrogen ion.

[0018] Furthermore, when the copper-acid ratio deviates from the preset range, the electrolyte is identified as either acidic or copper-oriented, including: when the copper-acid ratio is higher than the upper limit of the preset range, the electrolyte is determined to be copper-oriented; when the copper-acid ratio is lower than the lower limit of the preset range, the electrolyte is determined to be acidic.

[0019] Further, the real-time concentration gap is calculated based on the deviation between the copper-acid ratio and the preset range, and the replenishment volume is calculated and replenished accordingly based on the concentration gap and the total electrolyte volume. This includes: calculating the target concentration value based on the deviation between the copper-acid ratio and the preset range; obtaining the concentration gap based on the difference between the target concentration value and the current concentration value; calculating the replenishment volume based on the concentration gap and the total electrolyte volume; and replenishing the electrolyte using a dynamic adjustment strategy. The dynamic adjustment strategy includes real-time monitoring of the difference between the current concentration and the target concentration value, and automatically reducing the single replenishment volume when the current concentration approaches the target concentration value.

[0020] The above technical solution, by taking into account the online detection accuracy under corrosive environments, the real-time response capability to concentration fluctuations, and the synergistic control strategy of electrolyte components, and the concentration regulation system of online detection and automatic feeding closed-loop control, achieves timely reflection of real-time changes in electrolyte components and real-time replenishment control. It also enables fine adjustment of the replenishment rhythm and dosage, reducing the occurrence of over-replenishment or oscillation phenomena.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0022] (1) This invention provides online real-time monitoring of copper ion concentration and hydrogen ion concentration in electrolyte, replacing manual sampling and analysis, and can reflect the real-time changes of electrolyte components more promptly.

[0023] (2) The present invention controls the amount of liquid added through system self-feedback, and finely adjusts the liquid addition rhythm and dosage based on the active correction mechanism of concentration fluctuation, reducing over-addition or oscillation, and can more accurately and timely identify acid or copper excess, so as to achieve real-time liquid addition control.

[0024] (3) The present invention adopts multi-component linkage control (i.e., copper-acid linkage) to better adapt to the actual fluctuation characteristics of copper ion and sulfuric acid concentration during electrolysis, thereby ensuring the stability of electrolytic copper foil production and product quality.

[0025] (4) The present invention supports programmed concentration control settings to meet multi-stage control requirements. Attached Figure Description

[0026] Figure 1 This is a flowchart of an automatic monitoring and compensation control of copper acid concentration provided in an embodiment of the present invention.

[0027] Figure 2 This is a schematic diagram of an automatic monitoring and compensation control system for copper acid concentration provided in an embodiment of the present invention.

[0028] In the diagram: 100. Automatic monitoring and compensation control system for copper acid concentration; 1. Copper acid concentration detection module; 2. Error compensation module; 3. Concentration ratio judgment module; 4. Liquid replenishment calculation and execution module. Detailed Implementation

[0029] The technical solutions of various embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] This invention provides an automatic monitoring and compensation control system for copper acid concentration, which constructs an online detection and automatic feeding closed-loop control system for copper acid concentration in the electrolytic copper foil production process. It solves the pain points of traditional processes such as lagging manual intervention, crude component control, and weak anti-interference ability, and significantly improves production stability, product consistency and process economy, providing core equipment support for the intelligent upgrading of copper foil manufacturing.

[0034] Please refer to the appendix. Figure 2 The copper acid concentration automatic monitoring and compensation control system 100 provided by this invention includes a copper acid concentration detection module 1, an error compensation module 2, a concentration ratio judgment module 3, and a replenishment calculation and execution module 4. The copper acid concentration detection module 1 is used to detect the copper ion concentration and hydrogen ion concentration in the electrolyte. The error compensation module 2 uses a trained error compensation model to correct the detected readings of the copper ion concentration and hydrogen ion concentration. The concentration ratio judgment module 3 is used to calculate the copper acid ratio based on the corrected copper ion concentration and hydrogen ion concentration. When the copper acid ratio deviates from a preset range, it identifies the electrolyte as either acidic or copper-prone. The replenishment calculation and execution module 4 is used to calculate the real-time concentration gap based on the deviation between the copper acid ratio and the preset range, and calculate the replenishment amount based on the concentration gap and the total electrolyte volume, and perform replenishment accordingly.

[0035] Please refer to the appendix for details. Figure 1 This invention provides a method for monitoring and controlling the concentration of copper acid, comprising the following steps (steps S101-S107):

[0036] Step S101: Detect the concentrations of copper ions and hydrogen ions in the electrolyte.

[0037] In step S101, the present invention uses the copper acid concentration detection module 1 to detect the concentrations of copper ions and hydrogen ions in the electrolyte online in real time, replacing manual sampling and analysis, and can more timely reflect the real-time changes of components in the electrolyte. In this embodiment, the copper acid concentration detection module 1 is equipped with a combination of two or more concentration detection methods, including but not limited to conductivity method, potentiometric titration method, UV-Vis colorimetry or spectroscopy, wherein the conductivity method is used to reflect the overall ionic strength of the solution (…). The change. Orthostatic titration (ORP) is used to more accurately reflect the change. Activity. UV-Vis colorimetry or spectroscopy is used for quantitative analysis. Ion concentration.

[0038] Furthermore, this invention can automatically switch to different concentration detection methods or integrate multiple different concentration detection methods according to different production stages of electrolytic copper foil, thereby improving anti-interference and applicability. Production stages include a normal stable stage, an aging stage, and a fluctuating stage. In the normal stable stage, current density, temperature, and solution circulation are normal, and concentration fluctuations are small. In the aging stage, the electrolyte runs for a long time, and impurities accumulate, which may cause spectral background or potential drift. In the fluctuating stage, data instability can be caused by abnormal pump speed, localized concentration abnormalities, or drastic pH fluctuations. Understandably, for stages with small fluctuations, the copper acid concentration detection module 1 can select a detection method with fast response and strong anti-interference ability (such as potentiometric titration) as the main detection method according to the actual process characteristics, reducing redundant measurements and optimizing resource consumption. For stages with large fluctuations, the copper acid concentration detection module 1 automatically switches to multiple detection methods (such as conductivity and UV-Vis spectroscopy) for simultaneous online monitoring. The data is then used to calculate the copper / acid concentration through a weighted fusion algorithm, improving measurement stability and accuracy.

[0039] Step S103: Correct the detection readings of copper ion concentration and hydrogen ion concentration using the trained error compensation model.

[0040] In step S103, the error compensation module 2 collects a large number of conductivity / spectral signals under the "standard ratio" state during the initial stage of production or continuous operation. / Actual concentration relationship data. Compare the current conductivity / spectral signal with the historical baseline value of conductivity under the same conditions such as temperature, current density, and pH. If the current conductivity / spectral signal is found to be too high / too low, it is initially judged to be "signal drift caused by additives". Therefore, it is necessary to use the trained error compensation model to analyze the electrolyte concentration detected by copper acid concentration detection module 1. / The concentration was corrected.

[0041] Furthermore, an error compensation model (i.e., baseline conductivity / spectral shift model) under the influence of additives is established. The error compensation model is as follows: In the formula, This represents the corrected copper ion concentration or hydrogen ion concentration. This represents the concentrations of copper ions and hydrogen ions in the electrolyte detected by the copper acid concentration detection module. This represents the effect of additives. / Concentration offset; In the formula, n represents the total number of factors affecting conductivity detection; This represents the concentration of the i-th influencing factor; This represents the weighting coefficient of the i-th influencing factor. In this embodiment, the additives include brighteners, leveling agents, and chloride ions, meaning the total number of influencing factors, n, is 3. Represents the concentration of the brightener; This represents the concentration of the leveling agent; Represents the concentration of chloride ions; The weighting coefficient representing the brightening agent; The weighting coefficient representing the leveling agent; The weighting coefficients represent chloride ions. Understandably, in some feasible embodiments, the number of influencing factors can be increased or decreased as needed. Furthermore, the training process of the error compensation model involves: collecting historical copper acid concentration data, using this data to train the error compensation model to obtain the weighting coefficients. , , This leads to the obtained trained error compensation model.

[0042] The correction process involves: detecting the concentrations of brightener, leveling agent, and chloride ions in the electrolyte; inputting the concentrations of copper ions, hydrogen ions, brightener, leveling agent, and chloride ions into a trained error compensation model; and using the concentrations of brightener, leveling agent, and chloride ions to determine the impact of additives on the error. / Concentration offset value If the offset value If the threshold is exceeded (e.g., >5%, not limited here), it enters "correction mode" and uses the offset value. The detection readings of copper ion and hydrogen ion concentrations are corrected to eliminate the influence of brightener, leveling agent, and chloride ion concentrations on these concentrations, and the corrected copper ion and hydrogen ion concentrations are output. If the offset value does not conform to any model trend (such as jumps or discontinuous drift), a "data anomaly alarm" is triggered, liquid addition is paused, and manual verification is awaited. In other words, this invention, through error compensation module 2, can achieve an effective identification and response mechanism for phenomena such as additive interference and conductivity shift.

[0043] Step S105: Calculate the copper-acid ratio based on the corrected copper ion concentration and hydrogen ion concentration. When the copper-acid ratio deviates from the preset range, identify whether the electrolyte is in an acidic state or a copper-rich state.

[0044] In step S105, the present invention calculates the copper-acid ratio based on the corrected copper ion concentration and hydrogen ion concentration using the concentration ratio judgment module 3. Compared with manual judgment, this method can more accurately and promptly identify whether there is an excess of acid or copper, thereby achieving real-time replenishment control. Furthermore, because the present invention employs multi-component linkage control (copper-acid linkage), it better adapts to the actual fluctuation characteristics of copper ion and sulfuric acid concentrations during electrolysis, ensuring the stability of electrolytic copper foil production and product quality. The copper-acid ratio refers to the ratio of copper ion concentration to hydrogen ion concentration. When the copper-acid ratio is higher than the upper limit of the preset range (e.g., 1.5), it indicates that the copper ion concentration is too high or the hydrogen ion concentration is too low, and the electrolyte is determined to be copper-prone. When the copper-acid ratio is lower than the lower limit of the preset range (e.g., 1.0), it indicates that the hydrogen ion concentration is too high or the copper ion concentration is too low, and the electrolyte is determined to be acid-prone. In this embodiment, the preset range is 1.0~1.5. It is understood that the preset range can be adjusted according to actual needs and is not limited here.

[0045] Step S107: Calculate the real-time concentration gap based on the deviation between the copper-acid ratio and the preset range, and calculate the replenishment amount based on the concentration gap and the total electrolyte volume, and replenish accordingly.

[0046] In step S107, the present invention calculates the target concentration value based on the deviation between the copper-acid ratio and a preset range using the replenishment calculation and execution module 4. It then calculates the real-time concentration gap based on the difference between the target concentration value and the current concentration value, and calculates and replenishes the electrolyte based on the concentration gap and the total electrolyte volume. When the concentration ratio judgment module 3 determines that the current state is copper-biased, it triggers the replenishment calculation and execution module 4 to execute the acid addition adjustment logic. Alternatively, when the concentration ratio judgment module 3 determines that the current state is acid-biased, it triggers the replenishment calculation and execution module 4 to execute the copper addition adjustment logic.

[0047] The following explanation uses a slightly acidic state as an example. Assume the current concentration of copper ions is C1 = 14 (g / L) and the current concentration of hydrogen ions is C2 = 15 (g / L). At this point, the copper-acid ratio is C1 / C2 ≈ 0.93 < 1.0, indicating that the hydrogen ion concentration is too high or the copper ion concentration is too low. Assuming a target copper-acid ratio of 1.0, and keeping the hydrogen ion concentration constant, the target copper ion concentration is C3 = 1.0 * 15 = 15 (g / L). The concentration gap is then the absolute difference between the target copper ion concentration and the current copper ion concentration, i.e., the concentration gap ΔC = C3 - C1 = 15 - 14 = 1 (g / L). Furthermore, assuming the total electrolyte volume V = 1000 L, the concentration of the added copper ion solution is C4 = 115 (g / L), and the replenishment volume is ΔV, according to the law of conservation of solute, the amount of solute remains unchanged before and after replenishment: C1*V + C4*ΔV = C3*(V + ΔV). Therefore, the replenishment volume ΔV = (ΔC*V) / (C4 - C3) = 1 * 1000 / (115 - 15) = 10 L, requiring the addition of 10 L of copper ion solution with a concentration of C4 = 115 (g / L). Understandably, the type of copper ion solution can be selected according to actual needs and is not limited here.

[0048] Furthermore, after determining the replenishment volume, the replenishment calculation and execution module 4 employs a dynamic adjustment strategy for replenishment. This strategy includes real-time monitoring of the difference between the current concentration and the target concentration. When the current concentration approaches the target concentration, the replenishment volume is automatically reduced, with the precision of each replenishment controlled within 0.1 liters to prevent excessive replenishment speed from exceeding the target concentration. This allows for precise adjustment of the replenishment rhythm and dosage, reducing over-replenishment or oscillations, and preventing deviations in process parameters due to component fluctuations. This ensures the stability of the electrolysis process and reduces safety hazards caused by misoperation or excessive replenishment. Additionally, all replenishment actions are recorded in real-time and traceable, facilitating the review of production data, analysis of quality issues, and achieving full-process quality control.

[0049] It should be noted that the present invention can set a preset range according to actual needs, thereby adjusting the concentration of copper acid. For example, in the initial stage of electrolytic copper foil production: when the equipment is just started up and the temperature is not stable, a higher concentration is required. The concentration ensures the deposition rate; a slightly higher acid concentration also helps stabilize the interface reaction. During the stable production stage: after reaching steady state, a suitable concentration range is set to ensure copper foil performance (such as crystal density and surface condition). Before purification: impurities accumulate in the electrolyte, and the acid concentration may need to be adjusted (e.g., slightly reduced) to improve current efficiency. For special production needs: some types of copper foil require higher grain fineness, necessitating a temporary setting of a higher acid concentration. Understandably, this invention supports pre-setting different copper acid concentration control parameters and programs, enabling automatic adjustment of copper acid concentration control as production stages change, eliminating the need for frequent manual intervention, improving production efficiency and automation, and better meeting the multi-stage control needs of the electrolytic copper foil production process.

[0050] In summary, the present invention takes into account the online detection accuracy under corrosive environments, the real-time response capability to concentration fluctuations, and the synergistic control strategy of electrolyte components. The concentration regulation system with online detection and automatic feeding closed-loop control realizes timely reflection of real-time changes in solution components and real-time replenishment control. It also realizes fine adjustment of the replenishment rhythm and dosage, reducing the occurrence of over-replenishment or oscillation.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the technical solutions of the embodiments of the present invention.

Claims

1. An automatic monitoring and compensation control system for copper acid concentration, characterized in that, include: The copper acid concentration detection module is used to detect the concentration of copper ions and hydrogen ions in the electrolyte; The error compensation module uses a trained error compensation model to correct the detection readings of copper ion concentration and hydrogen ion concentration. The concentration ratio judgment module calculates the copper-acid ratio based on the corrected copper ion concentration and hydrogen ion concentration. When the copper-acid ratio deviates from the preset range, it identifies whether the electrolyte is in an acidic state or a copper-rich state. The electrolyte replenishment calculation and execution module calculates the real-time concentration gap based on the deviation between the copper-acid ratio and the preset range, and calculates the replenishment amount based on the concentration gap and the total electrolyte volume, and replenishes the electrolyte accordingly.

2. The automatic monitoring and compensation control system for copper acid concentration according to claim 1, characterized in that, The copper acid concentration detection module is equipped with a combination of two or more concentration detection methods, including conductivity method, potentiometric titration method, UV-Vis colorimetry method or spectroscopy method. The copper acid concentration detection module automatically switches to different concentration detection methods or integrates multiple different concentration detection methods according to the production stage.

3. The automatic monitoring and compensation control system for copper acid concentration according to claim 1, characterized in that, When the copper-acid ratio is higher than the upper limit of the preset range, the electrolyte is determined to be in a copper-prone state, triggering the acid addition adjustment logic; when the copper-acid ratio is lower than the lower limit of the preset range, the electrolyte is determined to be in a acid-prone state, triggering the copper addition adjustment logic.

4. The automatic monitoring and compensation control system for copper acid concentration according to claim 1, characterized in that, The electrolyte replenishment calculation and execution module calculates the target concentration value based on the deviation between the copper-acid ratio and the preset range; it obtains the concentration gap based on the difference between the target concentration value and the current concentration value; and it calculates the replenishment amount based on the concentration gap and the total electrolyte volume. A dynamic adjustment strategy is adopted for fluid replenishment; wherein, the dynamic adjustment strategy includes real-time monitoring of the difference between the current concentration and the target concentration value, and automatically reducing the single replenishment volume when the current concentration approaches the target concentration value.

5. The automatic monitoring and compensation control system for copper acid concentration according to claim 1, characterized in that, The error compensation module detects the concentrations of brightener, leveling agent, and chloride ions in the electrolyte; inputs the concentrations of copper ions, hydrogen ions, brightener, leveling agent, and chloride ions into the trained error compensation model; uses the trained error compensation model to remove the influence of brightener concentration, leveling agent concentration, and chloride ion concentration on the concentrations of copper ions and hydrogen ions, and outputs the corrected concentrations of copper ions and hydrogen ions.

6. The automatic monitoring and compensation control system for copper acid concentration according to claim 5, characterized in that, The error compensation model is as follows: In the formula, This represents the corrected copper ion concentration or hydrogen ion concentration. This represents the concentrations of copper ions and hydrogen ions in the electrolyte detected by the copper acid concentration detection module. This represents the shift in copper or hydrogen ion concentration caused by the additives. In the formula, n represents the total number of factors affecting conductivity detection; This represents the concentration of the i-th influencing factor; This represents the weight coefficient of the i-th influencing factor.

7. A method for automatic monitoring and compensation control of copper acid concentration, characterized in that, include: Detect the concentrations of copper ions and hydrogen ions in the electrolyte; The detection readings of copper ion concentration and hydrogen ion concentration are corrected using a trained error compensation model; The copper-acid ratio is calculated based on the corrected copper ion concentration and hydrogen ion concentration. When the copper-acid ratio deviates from the preset range, the electrolyte is identified as either acidic or copper-oriented. The real-time concentration gap is calculated based on the deviation between the copper-acid ratio and the preset range, and the replenishment amount is calculated based on the concentration gap and the total volume of electrolyte, and replenishment is performed accordingly.

8. The method for automatic monitoring and compensation control of copper acid concentration according to claim 7, characterized in that, The detection readings of copper ion concentration and hydrogen ion concentration are corrected using a trained error compensation model, including: The concentrations of brightener, leveling agent, and chloride ions in the electrolyte were measured. The concentrations of copper ions, hydrogen ions, brightener, leveling agent, and chloride ions are input into the trained error compensation model. The trained error compensation model is used to remove the effects of brightener concentration, leveling agent concentration, and chloride ion concentration on copper ion concentration and hydrogen ion concentration, and the corrected copper ion concentration and hydrogen ion concentration are output.

9. The method for automatic monitoring and compensation control of copper acid concentration according to claim 7, characterized in that, When the copper-acid ratio deviates from the preset range, the electrolyte is identified as either acidic or copper-rich, including: When the copper-acid ratio is higher than the upper limit of the preset range, the electrolyte is determined to be in a copper-biased state. When the copper-acid ratio is lower than the lower limit of the preset range, the electrolyte is determined to be in an acidic state.

10. The method for automatic monitoring and compensation control of copper acid concentration according to claim 7, characterized in that, The real-time concentration gap is calculated based on the deviation between the copper-acid ratio and the preset range, and the replenishment volume is calculated and replenished accordingly based on the concentration gap and the total electrolyte volume, including: The target concentration value is calculated based on the deviation between the copper-acid ratio and the preset range; The concentration gap is obtained by comparing the target concentration value with the current concentration value; Calculate the replenishment volume based on the concentration gap and the total volume of the electrolyte. A dynamic adjustment strategy is adopted for fluid replenishment; wherein, the dynamic adjustment strategy includes real-time monitoring of the difference between the current concentration and the target concentration value, and automatically reducing the single replenishment volume when the current concentration approaches the target concentration value.

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