Method, device and equipment for multi-parameter collaborative balance control of oven and storage medium

Abstract

The application discloses a kind of oven multi-parameter collaborative equalization control method, device, equipment and storage medium, related to integrated through oven technical field, method includes: based on the sensor of each region setting in oven, monitoring obtains the wind speed data, pressure difference data and temperature data corresponding to each region;Using the global flow field distribution model constructed in advance, the wind speed data corresponding to each region is processed, and each region is adjusted according to the processing result;Based on the pressure difference data corresponding to each region, the double-layer drying cavity of oven is executed decoupling pressure difference regulation and control;Real-time wind speed adjustment amount and real-time pressure difference adjustment amount are obtained;Real-time wind speed adjustment amount and real-time pressure difference adjustment amount are used as feedforward compensation parameter, combined with the temperature data collected to form closed-loop feedback, and the output power of the temperature control branch of oven is regulated and controlled.Therefore, the problem of traditional oven wind field layering, local eddy current, through dead angle is solved, and the global wind speed uniformity is greatly improved.

Description

Technical Field

[0001] This application relates to the field of integrated through-type oven technology, and in particular to a method, device, equipment, and storage medium for multi-parameter coordinated and balanced control of an oven. Background Technology

[0002] The front-to-back through-type integrated drying oven is widely used in the industrial drying production of flexible substrates due to its advantages of continuous flow, smooth material passage, and high drying efficiency. This type of oven has no segmented partition structure, and hot air flows through the entire area along the material conveying direction. There is a strong nonlinear coupling relationship between the air field, pressure field, and temperature field, and the upper and lower air fields interfere with each other.

[0003] Existing oven control technologies mostly employ independent PID control modes for single parameters such as wind speed, negative pressure, and temperature, lacking comprehensive multi-parameter collaborative decoupled control logic. Related technologies typically only collect local single-point wind speed data, making it difficult to accurately identify uneven airflow areas between upper and lower stratospheres, at air inlets and outlets, and within the cavity. This prevents targeted adjustment of air valves and airflow guiding structures, leading to problems such as wind speed stratification, localized eddies, and dead zones within the oven, directly causing uneven drying of the substrate. Summary of the Invention

[0004] This application provides a method, device, equipment, and storage medium for multi-parameter collaborative equalization control of an oven, which can solve the problems of air field stratification, local eddies, and through dead corners in traditional ovens, and significantly improve the uniformity of wind speed across the entire area.

[0005] To achieve the above objectives, this application adopts the following technical solution: Firstly, a multi-parameter coordinated equalization control method for an oven is provided, including: Based on sensors set up in various areas of the oven, the corresponding wind speed data, pressure difference data and temperature data of each area are monitored and obtained. A pre-built global flow field distribution model is used to process the wind speed data corresponding to each region, and the region is adjusted according to the processing results. Based on the differential pressure data corresponding to each region, decoupled differential pressure control is performed on the double-layer drying chamber of the oven; Obtain real-time wind speed adjustment and real-time differential pressure adjustment; The real-time wind speed adjustment and real-time differential pressure adjustment are used as feedforward compensation parameters, and combined with the collected temperature data to form a closed-loop feedback to regulate the output power of the temperature control branch of the oven.

[0006] Secondly, a multi-parameter coordinated equalization control device for an oven is provided, comprising: The monitoring module is used to monitor the wind speed, pressure difference, and temperature data of each area based on the sensors set in each area of ​​the oven. The adjustment module is used to process the wind speed data corresponding to each region using a pre-built global flow field distribution model, and adjust each region according to the processing results. The decoupled differential pressure control module is used to perform decoupled differential pressure control on the double-layer drying chamber of the oven based on the differential pressure data corresponding to each region. The acquisition module is used to acquire real-time wind speed adjustment and real-time differential pressure adjustment. The control module uses real-time wind speed adjustment and real-time differential pressure adjustment as feedforward compensation parameters, combined with the collected temperature data to form a closed-loop feedback, and controls the output power of the oven's temperature control branch.

[0007] Thirdly, embodiments of this application provide an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the oven multi-parameter collaborative equalization control method as described in any of the first aspects above.

[0008] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program that, when executed by a processor, implements the oven multi-parameter collaborative equalization control method as described in any one of the first aspects above.

[0009] Fifthly, embodiments of this application provide a computer program product that, when run on an electronic device, causes the electronic device to execute the oven multi-parameter collaborative equalization control method described in any of the first aspects.

[0010] It is understood that the beneficial effects of the second to fifth aspects mentioned above can be found in the relevant descriptions in the first aspect mentioned above, and will not be repeated here.

[0011] As can be seen from the above, the multi-parameter collaborative equalization control method, device, equipment, and storage medium provided in this application firstly monitors the wind speed, differential pressure, and temperature data corresponding to each region based on sensors set in each region of the oven. Then, a pre-constructed global flow field distribution model is used to process the wind speed data corresponding to each region, and the regions are adjusted according to the processing results. Subsequently, based on the differential pressure data corresponding to each region, decoupled differential pressure control is performed on the double-layer drying chamber of the oven. Then, the real-time wind speed adjustment and real-time differential pressure adjustment are obtained. Finally, the real-time wind speed adjustment and real-time differential pressure adjustment are used as feedforward compensation parameters, combined with the collected temperature data to form a closed-loop feedback, and the output power of the temperature control branch of the oven is controlled. Therefore, by accurately locating areas of uneven airflow through multi-point matrix acquisition and threshold determination, and by linking air valves and flow guiding structures to adaptively correct deviations, the problem of airflow layering, local eddies, and dead zones in traditional drying ovens is solved. This significantly improves the uniformity of airflow across the entire area, breaks the traditional unified negative pressure control mode, independently calibrates the pressure difference between the upper and lower layers, and maintains a stable negative pressure difference. This fundamentally suppresses the shaking, warping, and wrinkling deformation of flexible substrates such as lithium battery electrodes during the drying process, and significantly improves product yield.

[0012] The above description is merely an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, specific embodiments of this application are given below. Attached Figure Description

[0013] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings: Figure 1 This is a flowchart illustrating a multi-parameter collaborative equalization control method for an oven according to an embodiment of this application; Figure 2 This is a schematic diagram of the overall air duct of an oven provided in one embodiment of this application; Figure 3 This is a schematic diagram of a single-section drying oven provided in one embodiment of this application; Figure 4 This is a schematic diagram of a single-section box layout provided in one embodiment of this application; Figure 5 This is a schematic diagram of the structure of a multi-parameter collaborative equalization control device for an oven provided in one embodiment of this application; Figure 6 This is a schematic diagram of the structure of an electronic device provided in one embodiment of this application. Detailed Implementation

[0014] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this application, and not all embodiments. The components of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0015] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0016] It should be noted that existing oven control technology does not achieve decoupled control of the upper and lower airflow fields, making it impossible to accurately manage the negative pressure difference between the upper and lower layers of the oven. This results in significant issues such as fluctuations in the cavity negative pressure and imbalances in the pressure difference between the upper and lower layers. For flexible thin substrates such as lithium battery electrodes, unstable negative pressure differences can cause high-frequency vibration, edge warping, and wrinkling deformation of the electrodes during the drying process, severely reducing product yield. Simultaneously, fluctuations in airflow and negative pressure drift further disturb the cavity temperature field, creating multi-parameter coupling interference. This leads to poor drying process stability and low product consistency, failing to meet the mass production drying requirements of high-end precision substrates.

[0017] To address the aforementioned issues, this application proposes a multi-parameter collaborative equilibrium control method for an oven. By constructing a global flow field distribution model for the oven, it achieves precise monitoring of multi-point wind speed and intelligent determination of uneven wind field areas. It also completes the linkage correction of inlet and outlet valves and guide valves. Through decoupled negative pressure control of the upper and lower layers of the air field, it stabilizes the negative pressure difference between the upper and lower layers, suppresses electrode vibration and warping, and ultimately achieves collaborative equilibrium control of multiple parameters such as wind speed, negative pressure, and temperature, thereby improving the uniformity of substrate drying and product yield.

[0018] See Figure 1 This is a flowchart illustrating a multi-parameter collaborative equalization control method for an oven according to an embodiment of this application. The specific implementation details of this application are described below with reference to the accompanying drawings.

[0019] like Figure 1 As shown, the multi-parameter collaborative equalization control method for an oven provided in this embodiment includes the following steps: Step 101: Based on the sensors set in each area of ​​the oven, the wind speed data, pressure difference data and temperature data corresponding to each area are monitored and obtained.

[0020] Optionally, the oven is an integrated through-type oven with no partitions between the front and back. The oven is equipped with a double-layer drying chamber, a circulating variable frequency fan, a dehumidification variable frequency fan, an inlet and outlet electric air valve, an adjustable guide air valve, and a multi-point sensor acquisition module.

[0021] The system includes a circulating variable frequency fan to drive the hot air circulation within the double-layer drying chamber, and an exhaust variable frequency fan that works in conjunction with inlet and outlet electric dampers to achieve dehumidification and negative pressure control. Adjustable airflow guide valves are installed within the air ducts of the double-layer drying chamber to adjust the airflow distribution within the chamber. Multi-point sensor acquisition modules are arranged at multiple measuring points within the double-layer drying chamber to collect temperature and differential pressure signals in real time and upload them to the control system.

[0022] Among them, the integrated through-type oven with no partitions at the front and back can refer to an oven that is continuously connected along the material conveying direction, with no segmented partitions inside the cavity, and hot air flows through the entire area along the material's direction of travel. It is suitable for drying equipment in continuous production lines of flexible substrates such as lithium battery electrodes.

[0023] The double-layer drying chamber refers to the vertical division of the oven into an upper drying chamber and a lower drying chamber. The two chambers are independent of each other and can transport substrates separately. They also have independent air duct adjustment capabilities, enabling decoupled control of the upper and lower air fields.

[0024] Among them, the circulating variable frequency fan is used to drive the hot air circulation flow in the oven cavity. By adjusting the operating frequency, it changes the circulating air volume inside the cavity and serves as the core actuator for regulating the air field and pressure field.

[0025] Among them, the dehumidification variable frequency fan refers to the variable frequency fan that undertakes the function of discharging moisture and exhaust gas from the oven. It can adjust the dehumidification air volume by frequency adjustment to maintain the negative pressure level of the cavity.

[0026] Among them, the electric air inlet and exhaust valves are electrically adjustable valves installed in the air inlet channel and the air outlet channel, respectively. By changing the valve opening, the ventilation volume of the channel is adjusted to achieve air volume distribution.

[0027] Among them, the adjustable air guide valve is arranged inside the cavity air duct and is an air valve component that can change the air guide angle. It is used to correct the airflow direction, eliminate local eddies and airflow dead angles, and balance the regional wind speed.

[0028] The multi-point sensing acquisition module is an integrated sensing module composed of multi-point wind speed sensors, micro differential pressure transmitters, and temperature sensors, distributed in a three-dimensional matrix to achieve synchronous data acquisition from multiple points across the entire drying oven. Specifically, the multi-point sensing acquisition module, such as multi-point wind speed sensors, micro differential pressure transmitters, and PT100 temperature sensors, forms a three-dimensional sensing matrix to collect wind speed data from the upper and lower stratospheres, air inlets and outlets, and the interior of the cavity; pressure difference between the negative pressure chamber and the main chamber; pressure difference between the upper and lower drying cavities; and temperature data from multiple points across the entire oven.

[0029] Among them, the three-dimensional matrix sensing points refer to the sensing points being evenly arranged along the axial direction of the drying oven (feeding section, middle section, discharge section), vertical direction (upper drying chamber, lower drying chamber), and radial direction, covering the upper and lower stratigraphic layers, air inlet and outlet, the middle of the chamber, and key areas of the negative pressure chamber, to achieve a thorough sensing of the air field without any blind spots.

[0030] For example, three-dimensional matrix sensor points can be deployed in the upper and lower stratigraphic layers, inlet, outlet, middle of the cavity, and negative pressure chamber of the oven to synchronously collect raw signals of wind speed, pressure difference, and temperature at each point. The raw signals are then filtered and preprocessed to remove outliers, yielding the corresponding effective wind speed, pressure difference, and temperature data for each region.

[0031] It should be noted that an integrated flow field distribution model can be constructed in advance based on the oven cavity structure, air duct size, and material process parameters. The standard wind speed range, wind speed deviation threshold, upper and lower standard negative pressure difference range, and temperature equalization threshold of each monitoring area can be calibrated. A full-domain sensor acquisition matrix can be deployed, with acquisition points covering the upper and lower stratospheres, inlet, outlet, middle of the cavity, and negative pressure cavity, for the acquisition of wind speed, pressure difference, and temperature signals.

[0032] In other words, a unified three-dimensional wind speed distribution model that adapts to the air duct can be constructed in advance based on the oven's cavity structure, air duct dimensions, and production line material process parameters. Based on the oven's drying process requirements, the standard wind speed range, single-point wind speed deviation threshold, target threshold for overall wind speed non-uniformity, standard negative pressure difference range between the upper and lower cavities, and overall cavity temperature equalization threshold are uniformly calibrated for all monitoring areas.

[0033] Furthermore, a three-dimensional global sensing matrix can be deployed throughout the entire interior of the oven, with the collection points fully covering the upper stratosphere, lower stratosphere, inlet, outlet, middle section of the cavity, and key locations in the negative pressure cavity. At each point, wind speed sensing units, differential pressure sensing units, and temperature sensing units are simultaneously deployed to complete the global acquisition layout of three types of raw signals: wind speed, differential pressure, and temperature.

[0034] Step 102: Using a pre-built global flow field distribution model, the wind speed data corresponding to each region is processed, and the regions are adjusted according to the processing results.

[0035] Optionally, a global flow field distribution model can be used to compare the wind speed data corresponding to each region with the wind speed reference interval corresponding to each region to obtain the local wind speed deviation corresponding to each region. Based on the local wind speed deviation, the local wind speed non-uniformity can be calculated. If the local wind speed deviation of any region exceeds the wind speed deviation threshold and the local wind speed non-uniformity exceeds the target value, any region is determined to be an abnormal region. Then, based on the location of the abnormal region and the deviation value of the local wind speed deviation, the air duct adjustment components in the oven are adjusted.

[0036] Among them, the global flow field distribution model refers to the three-dimensional flow field calculation model adapted to the front and rear straight-through integrated double-layer oven. It is built on the basis of the oven duct size and cavity structure. It can input the wind speed at multiple points in the global area, fit the complete airflow distribution in the oven axis (feed section / middle section / discharge section) and vertical (upper layer / lower layer), quantify the regional wind speed difference, and be used to identify wind field defects such as eddies, dead angles, and wind speed stratification.

[0037] Among them, the wind speed reference range refers to the range of qualified wind speed fluctuations in each area calibrated according to the material drying process during the equipment initialization stage. It is the standard numerical range for judging whether the wind speed meets the standard.

[0038] Among them, local area wind speed deviation refers to the difference between the measured wind speed at a single sensing point and the standard wind speed center value at that point, reflecting the degree to which the wind speed at a single point deviates from the standard.

[0039] Among them, the wind speed deviation threshold refers to the maximum allowable deviation of wind speed at a single point, which is preset. If the deviation at a single point exceeds this value, it means that the wind speed at a single point is seriously inaccurate.

[0040] Local wind speed non-uniformity refers to the discrete quantitative index of wind speed deviation at all points within the same drying section. It is used to measure the overall uniformity of wind speed in a region. The larger the value, the higher the risk of uneven drying and wetting in that section.

[0041] The non-uniformity target value refers to the maximum local wind speed non-uniformity allowed by the process. If this value is exceeded, the flow field of the entire area is judged to be unbalanced.

[0042] The duct adjustment components include electric inlet and outlet air valves, adjustable guide air valves, and upper and lower layer circulating variable frequency fans, which are the actuators for adjusting the air volume and airflow direction of the duct.

[0043] Specifically, the real-time wind speed data of various regions uploaded by the sensor acquisition matrix can be imported into the pre-built global flow field distribution model. The measured wind speed at each point can be compared with the pre-calibrated standard wind speed range of the region to calculate the local wind speed deviation corresponding to each monitoring point.

[0044] Furthermore, based on the local wind speed deviation values ​​at all points, the local wind speed non-uniformity corresponding to the axial feeding section, middle section, and discharge section of the oven, as well as the vertical upper and lower stratospheres, can be calculated in segments. Then, for any monitoring area, two conditions can be simultaneously determined: the local wind speed deviation exceeds a preset single-point wind speed deviation threshold, and the local wind speed non-uniformity in that area exceeds a preset non-uniformity target threshold. When both conditions are met simultaneously, the area is determined to be an area with abnormal airflow.

[0045] Furthermore, the controller can read the axial segment and upper / lower layer position of the abnormal area, and combine the magnitude of the local wind speed deviation in that area to control the opening of the electric air inlet and outlet valves and the deflection angle of the adjustable guide valves inside the air duct at the corresponding positions. It can also synchronously match and adjust the air volume of the circulating variable frequency fan in the corresponding area. By changing the airflow direction in the air duct and the total ventilation volume in the area, it can eliminate the problems of local eddies, dead corners of airflow penetration, and stratification of wind speed between upper and lower layers inside the oven, thereby achieving uniform wind speed throughout the oven.

[0046] For example, the standard wind speed reference range for the lower feeding section of the oven is 1.6 to 2.0 m / s, and the standard center wind speed is 1.8 m / s; Wind speed deviation threshold: ±0.2m / s; Target value for local wind speed non-uniformity: 6%.

[0047] The global sensing matrix collected measured wind speeds at three points in the lower feeding section: 1.4 m / s, 1.5 m / s, and 1.7 m / s. The measured wind speed at point 1 was 1.4 m / s, which is -0.4 m / s different from the standard center wind speed of 1.8 m / s. The wind speed deviation in the local area was -0.4 m / s, which exceeds the wind speed deviation threshold of ±0.2 m / s.

[0048] Based on the wind speed deviation calculation at three points in this section, the local wind speed non-uniformity of this feeding section is 7.2%, which is greater than the preset non-uniformity target value of 6%. This area simultaneously meets the requirements of single-point deviation exceeding the limit and segment non-uniformity exceeding the limit, and the system determines that the lower feeding section of the oven is an area with abnormal wind field.

[0049] The controller identified the abnormal location as the lower feed section, with a negative deviation and low air velocity. It opened the electric inlet and outlet valves on the lower feed side, deflecting the adjustable guide valves in that section of the duct to direct airflow downwards to the lower stratosphere. Simultaneously, it slightly increased the operating frequency of the lower circulating variable frequency fan. This increased the air intake volume in the area, corrected the airflow direction, and eliminated the low air velocity and dead zones on the lower feed side. After adjustment, the air velocity was measured again; the single-point deviation was reduced to within 0.1 m / s, and the segmented non-uniformity decreased to 4.5%, thus resolving the abnormal condition.

[0050] In the above embodiments, based on the front and rear straight-through integrated air field structure, a three-dimensional global wind speed distribution mathematical model of the oven is established, covering the upper and lower stratosphere, air inlet and outlet, and key areas inside the cavity. It can accurately locate areas with uneven wind field by real-time collection of wind speed at multiple points and comparison with deviation thresholds, and adaptively adjust the opening of the electric air inlet and outlet valves and the guide air valves to eliminate local wind speed dead zones and flow field stratification problems.

[0051] Step 103: Based on the differential pressure data corresponding to each region, decoupled differential pressure control is performed on the double-layer drying chamber of the oven.

[0052] Optionally, the double-layer drying chamber includes an upper drying chamber and a lower drying chamber. Each region includes at least the upper and lower drying chambers of the oven. The pressure difference data of the upper drying chamber, the lower drying chamber, and the negative pressure chamber can be compared with a preset standard pressure difference range for the double-layer chamber. If the pressure difference corresponding to the upper drying chamber deviates from the first target pressure difference range, the corresponding upper-layer matching airflow drive mechanism and / or air valve assembly is activated to adjust the pressure difference of the upper drying chamber. If the pressure difference corresponding to the lower drying chamber deviates from the second target pressure difference range, the corresponding lower-layer matching airflow drive mechanism and / or air valve assembly is activated to adjust the pressure difference of the lower drying chamber. Thus, the pressure difference fluctuation between the upper and lower drying chambers is controlled within a preset fluctuation range.

[0053] The double-layer drying chamber refers to a front-to-back integrated drying oven that is vertically divided into two independent drying air ducts, consisting of an upper drying chamber and a lower drying chamber. Each air duct is equipped with an independent circulating fan and inlet / outlet valves, which can independently transport flexible substrates and independently adjust the air pressure.

[0054] like Figure 2 As shown, 11 is the waste heat recovery system, 12 is the second-layer inlet and outlet air duct, 13 is the second-layer oven, 14 is the first-layer inlet and outlet air duct, 15 is the first-layer oven, and 16 is the negative pressure control component. The waste heat recovery system is connected to the second-layer oven and the first-layer oven through the second-layer inlet and outlet air duct and the first-layer inlet and outlet air duct, respectively, to realize the recovery of hot air waste heat and airflow circulation. The negative pressure control component is used to maintain a slightly negative pressure environment inside the oven and to regulate the airflow operating parameters in conjunction with the control. The second-layer oven and the first-layer oven form a double-layer drying chamber with no partitions between them. The upper and lower air ducts are independent of each other and can realize independent control of air volume and air pressure. The waste heat recovery system is used to recover exhaust heat to preheat the intake air, and the negative pressure chamber component maintains the negative pressure inside the chamber.

[0055] Figure 3This is a schematic diagram of a single-section oven structure provided in one embodiment of this application. 21 is a lamp cooling fan assembly, 22 is a cable tray assembly, 23 is an oven frame assembly, 24 is an oven door assembly, 25 is an internal infrared mounting assembly, 26 is a lamp cooling pipe assembly, 27 is a roller assembly, 28 is a base frame assembly, and 29 is a crossflow fan assembly. The base frame assembly 28 supports the entire machine structure, and the roller assembly 27 conveys the substrate to be dried. The internal infrared mounting assembly 25 provides an infrared heat source, and the crossflow fan assembly 29 drives the hot air circulation within the cavity. The lamp cooling fan assembly 21, together with the lamp cooling pipe assembly 26, forms a lamp cooling circuit. The oven frame assembly 23 is the main enclosure structure, the oven door assembly 24 is used for equipment maintenance opening and closing, and the cable tray assembly 22 integrates various electrical wiring.

[0056] Figure 4 This is a schematic diagram of the oven cavity layout according to one embodiment of this application. 31 is a crossflow fan, 32 is a roller, and 33 is an infrared lamp. The roller 32 conveys the substrate to be dried, the infrared lamp 33 provides an infrared radiation heat source, and the crossflow fan 31 forms a transverse airflow to balance the temperature field of the cavity and work together to complete the substrate drying operation.

[0057] The negative pressure chamber refers to the independent negative pressure exhaust chamber of the oven, which continuously extracts moisture from the oven through a dehumidifying fan to control the overall negative pressure environment of the oven. The sensor simultaneously collects the pressure difference between the negative pressure chamber and the upper and lower chambers.

[0058] Among them, decoupled differential pressure control refers to splitting the originally mutually interfering upper and lower wind fields into two independent closed-loop pressure regulation loops. Adjusting the air volume and valves of one layer will not change the pressure difference of the other layer cavity, thus eliminating the pressure coupling interference of the two-layer air duct.

[0059] The first target pressure difference range refers to the standard negative pressure range of the upper drying chamber as defined by the process, which serves as the benchmark for independent pressure adjustment in the upper chamber.

[0060] The second target pressure difference range refers to the standard negative pressure range of the lower drying chamber as defined by the process, which serves as the benchmark for independent pressure adjustment in the lower chamber.

[0061] The upper-layer airflow drive mechanism refers to the upper-layer dedicated circulating variable frequency fan and the upper-layer dehumidification variable frequency fan, which are only used to adjust the circulating airflow and negative pressure of the upper-layer drying chamber.

[0062] The lower-level airflow drive mechanism refers to the lower-level dedicated circulating variable frequency fan and the lower-level dehumidification variable frequency fan, which are only used to adjust the circulating airflow and negative pressure of the lower-level drying chamber.

[0063] Among them, the air valve assembly refers to the independently configured air inlet and outlet electric air valves and adjustable air guide valves on the upper and lower floors, which belong to two independent air ducts and control the ventilation volume of the corresponding cavity separately.

[0064] The preset fluctuation range refers to the maximum allowable fluctuation limit of the pressure difference between the upper and lower chambers. This solution can stably control the pressure difference fluctuation within ±1Pa.

[0065] Optionally, the monitoring area for differential pressure acquisition includes at least the upper and lower drying chambers of the oven. Simultaneously, pressure data from the negative pressure chamber is collected. The real-time differential pressure of the upper and lower drying chambers is compared item by item with the preset standard differential pressure range for both chambers. Pressure regulation is performed independently in two separate steps. If only the differential pressure of the upper drying chamber deviates from the first target differential pressure range: only the upper-layer airflow drive mechanism and the upper-layer dedicated air valve assembly are driven to independently regulate the pressure, while all fans and valves in the lower layer maintain their current operating parameters. If only the differential pressure of the lower drying chamber deviates from the second target differential pressure range: only the lower-layer airflow drive mechanism and the lower-layer dedicated air valve assembly are driven to independently regulate the pressure, while all fans and valves in the upper layer maintain steady-state operation.

[0066] If the pressure difference between the upper and lower layers deviates from their respective target ranges at the same time, the two sets of actuators will adjust independently and synchronously without affecting each other. The real-time pressure difference between the upper and lower layers will be monitored in a closed loop throughout the process, and the pressure difference fluctuation between the upper and lower drying chambers will be continuously and stably controlled within the preset allowable fluctuation range.

[0067] For example, the process settings for this drying oven are: the upper layer target negative pressure range is -10~-8Pa (first target pressure difference range), the lower layer target negative pressure range is -10~-8Pa (second target pressure difference range), and the allowable fluctuation range of the pressure difference between the upper and lower layers is ±1Pa. The sensor module detects that the real-time negative pressure of the upper drying chamber is -13Pa, and the negative pressure of the lower drying chamber is stable at -9Pa; the upper layer pressure difference deviates from the first target pressure difference range, while the lower layer pressure difference is normal. The system only activates the upper layer pressure regulating circuit, increases the speed of the upper layer exhaust variable frequency fan, and slightly closes the upper layer exhaust electric air valve; the parameters of the lower layer circulating fan and all lower layer air valves remain completely unchanged. The upper layer negative pressure is continuously monitored, and after adjustment, the upper layer negative pressure stabilizes at -9Pa, the pressure difference between the upper and lower layers is controlled within 0.3Pa, within the preset ±1Pa fluctuation range, and the substrate does not vibrate or warp. If changes in production load cause the lower layer negative pressure to become -6Pa and the upper layer negative pressure to remain at -9Pa, then only the lower layer fan and lower layer air valve are adjusted, and the upper layer equipment does not operate. Eventually, the lower layer negative pressure returns to the standard range, and the pressure difference between the two layers remains stable.

[0068] Step 104: Obtain the real-time wind speed adjustment and real-time differential pressure adjustment.

[0069] Specifically, during the execution of the above steps, namely the global wind speed balance adjustment and the decoupled pressure difference control of the upper and lower cavities, the controller records the control output value of each round in real time and extracts two types of feedforward basic parameters: real-time wind speed adjustment and real-time pressure difference adjustment.

[0070] The real-time wind speed regulation includes the adjustment values ​​of the opening of the guide valves in each area, the changes in the opening of the inlet and outlet electric dampers, and the frequency adjustment values ​​of the circulating variable frequency fan. The real-time differential pressure regulation includes the adjustment of the speed of the upper / lower layer matching fans and the changes in the opening of the corresponding cavity exhaust valve.

[0071] Step 105: The real-time wind speed adjustment and real-time differential pressure adjustment are used as feedforward compensation parameters, and combined with the collected temperature data to form a closed-loop feedback to regulate the output power of the temperature control branch of the oven.

[0072] Optionally, the real-time wind speed adjustment can be used as the first compensation factor to correct the differential pressure adjustment parameter, thereby obtaining the corrected differential pressure adjustment parameter. Based on the corrected differential pressure adjustment parameter, the air volume drive mechanism and the air valve assembly are driven to complete the cavity pressure regulation. Based on the temperature data collected in each area, the temperature deviation between the temperature data and the target temperature is compared.

[0073] Furthermore, based on the temperature deviation, heating control parameters are determined, and the real-time differential pressure adjustment is used as a second compensation factor to correct the heating control parameters, thereby obtaining the target heating control parameters. The target heating control parameters are then sent to the first temperature control branch and the second temperature control branch.

[0074] In other words, the real-time wind speed adjustment is used as the first compensation factor to correct the differential pressure adjustment parameter, and the corrected differential pressure adjustment parameter is obtained. Based on the corrected differential pressure adjustment parameter, the corresponding air volume drive mechanism and air valve assembly are driven to complete the pressure adjustment of the upper and lower cavities. The temperature data of each area collected by the global sensing matrix is ​​read, and the measured temperature is compared with the preset target temperature of each zone to calculate the temperature deviation of each zone.

[0075] Furthermore, basic heating control parameters are generated based on the temperature deviation of the zones. Then, the real-time differential pressure adjustment is used as the second compensation factor to correct the basic heating control parameters, so as to obtain the final target heating control parameters. The target heating control parameters are synchronously sent to the first temperature control branch and the second temperature control branch. The two temperature control branches adjust their output power synchronously according to the parameters to work together to complete the temperature compensation of the entire oven.

[0076] The first temperature control branch regulates the basic temperature of the oven intake air through the intake preheating component, airflow distribution valve, and waste heat reuse mechanism. The second temperature control branch independently adjusts the heat source output power of each zone according to the different zones of the oven.

[0077] The oven is equipped with two independent temperature control circuits that work together: The first temperature control branch refers to the coordinated operation of the air intake preheating component, the airflow distribution valve, and the exhaust waste heat recovery mechanism; by adjusting the air intake preheating power, the fresh air valve opening, and the exhaust waste heat recovery ratio, the overall air intake base temperature of the oven is uniformly adjusted. The second temperature control branch refers to the oven being divided into multiple independent temperature control zones along the axial direction, including the feeding section, the middle section, and the discharge section. Each zone is equipped with an independent heat source. The branch adjusts the number of heat sources turned on and the output power of each zone according to the parameters issued, and precisely compensates for local temperature differences.

[0078] Among them, the real-time wind speed adjustment refers to the adjustment range of various duct actuators output by the controller to balance the wind field, including the angle of the guide valve, the opening degree of the inlet and outlet valves, and the frequency change value of the circulating fan, which is used to predict airflow disturbances.

[0079] Among them, the real-time differential pressure adjustment refers to the adjustment range of the upper and lower layer fans and exhaust valves during the decoupling pressure regulation process, reflecting the degree of change in cavity air pressure.

[0080] Among them, the feedforward compensation parameter refers to the ability to predict heat loss in advance by adjusting wind speed and wind pressure before temperature fluctuations occur, and to correct the heating output in advance to solve the problem of temperature control lag.

[0081] The first compensation factor refers to the wind speed adjustment, which is used to correct the differential pressure control parameters in advance and offset the pressure deviation in the cavity caused by changes in air volume.

[0082] Among them, the corrected differential pressure adjustment parameters refer to the fan and valve control parameters after superimposed wind speed disturbance compensation, which have higher pressure regulation accuracy.

[0083] Temperature deviation refers to the difference between the measured temperature of each zone and the target temperature of the process, which serves as the basis for temperature control closed-loop calibration.

[0084] The second compensation factor refers to the differential pressure adjustment. Changes in air pressure will remove heat from the chamber and are used to correct the basic heating parameters.

[0085] Among them, the target heating control parameter refers to the final heating output command after superimposed differential pressure feedforward compensation and temperature closed-loop correction, which is simultaneously issued to two temperature controllers.

[0086] Among them, the air intake preheating component refers to the fresh air heating pack, which is used to preheat the cold air entering the oven from the outside.

[0087] Among them, the airflow distribution valve refers to the fresh air electric valve, which controls the proportion of fresh air mixed in.

[0088] Among them, the waste heat reuse mechanism refers to the exhaust waste heat recovery component, which recovers the heat from high-temperature exhaust air to preheat fresh air and reduce energy consumption.

[0089] Among them, the zoned heat source refers to the infrared heating lamp tube, which can be independently adjusted in different areas to achieve precise local temperature control.

[0090] For example, the target temperature in the middle section of the oven is 85℃. The reference preheating power of the first temperature control branch is 60%, and the reference lamp power in the middle section of the second temperature control branch is 50%. The system performs airflow correction, opening the air inlet valve of the lower feeding section by 20%. This value is extracted as the real-time wind speed adjustment (first compensation factor) to correct the lower fan pressure difference parameters. The lower fan speed is simultaneously increased to complete the pressure adjustment. After the pressure adjustment is completed, the measured temperature in the middle section is 82℃, and the temperature deviation is calculated as -3℃. Based on this deviation, the basic heating control parameters are generated (preheating power +10%, lamp power +12%). This time, the lower fan speed is increased, and the pressure difference shifts. The fan adjustment range is extracted as the real-time pressure difference adjustment (second compensation factor) to correct the basic heating parameters again, resulting in the target heating control parameters: preheating power +16%, lamp power +18%. Parameters are sent to the two temperature control branches: First temperature control branch: Increase the power of the fresh air heating pack, open the fresh air valve, increase the proportion of exhaust waste heat recovery, and increase the overall intake base temperature; Second temperature control branch: Increase the output power of the middle section infrared lamp to accurately supplement the temperature of the middle section area; Continuous temperature monitoring forms a closed loop, and the mid-section temperature stabilizes in the range of 84.5~85.5℃. Fluctuations in wind speed and negative pressure no longer cause significant temperature drops, and there is no lag temperature difference.

[0091] Furthermore, it is possible to obtain operating condition change information corresponding to at least one target operating condition, and to correct the target parameters based on the operating condition change information.

[0092] The target operating conditions include at least one of the following: material inlet and outlet, furnace door opening and closing, filter resistance change, and ambient temperature and humidity fluctuation; the target parameters include at least one of the following: global flow field distribution model parameters, differential pressure adjustment parameters, and heating control parameters.

[0093] It should be noted that various disturbances occur during continuous mass production in the oven, directly altering the airflow in the duct, the negative pressure in the cavity, and the base temperature of the incoming air, thereby disrupting the equilibrium between airflow, negative pressure, and temperature. This step identifies disturbance signals in real time, eliminating the need for manual recalibration of equipment parameters. It automatically corrects three core parameters—flow field model, differential pressure control, and heating control—to adapt to all production conditions and continuously maintain a stable and balanced airflow, pressure, and temperature field across the entire oven.

[0094] The controller collects real-time signals of material position on the production line, furnace door opening and closing, filter differential pressure monitoring, and workshop environmental temperature and humidity sensing. It identifies any target operating condition such as material entry and exit, furnace door opening and closing, filter resistance attenuation, and environmental temperature and humidity fluctuations, and extracts the corresponding operating condition change information.

[0095] Specifically, regarding the furnace door opening and closing operation, when the furnace door is open / not fully closed, the system maintains a slight negative pressure inside the oven to prevent gas from leaking out. Under normal operating conditions, the inspection port, observation hole, and manhole remain closed. The controller adjusts the corresponding target parameters based on the disturbance characteristics corresponding to different operating conditions.

[0096] Among them, material entry and exit, furnace door opening and closing will cause instantaneous loss of cavity air volume, and the parameters of the global flow field distribution model, differential pressure adjustment parameters, and heating control parameters will be corrected simultaneously. Among them, the filter resistance gradually increases with the usage time, and the ventilation volume of the air duct decreases. The focus is on correcting the parameters of the global flow field distribution model and the differential pressure adjustment parameters. Among them, large fluctuations in ambient temperature and humidity will change the base temperature of fresh air. Therefore, the heating control parameters should be corrected first, and the flow field model should be finely adjusted simultaneously to compensate for changes in intake air volume. Optionally, the corrected global flow field distribution model parameters, differential pressure adjustment parameters, and heating control parameters are synchronously updated to the control loop. Subsequent wind speed balancing, decoupled pressure regulation, and dual-path temperature control processes are all executed based on the updated parameters, adaptively matching the current production conditions throughout the process.

[0097] In summary, this invention utilizes a global flow field distribution model to perform multi-point wind speed quantitative analysis. Simultaneously, it combines wind speed deviation and wind speed non-uniformity as dual judgment criteria to accurately locate abnormal areas such as eddies, airflow dead zones, and wind speed stratification, allowing for targeted adjustment of the air duct adjustment components. Unlike traditional single-point wind speed monitoring methods, it can cover the entire area, including the upper and lower layers, inlet and outlet ports, and the middle section of the cavity, significantly improving the uniformity of wind speed inside the drying oven. This avoids over- or under-drying of flexible substrates in certain areas, improving product drying consistency. Employing a decoupled control logic with separate regulation of the dual-layer drying cavity, the upper and lower layer fans and valve actuators do not interfere with each other. Adjustment is only made independently for single layers with excessive pressure difference, preventing the problem of adjusting one layer's airflow causing negative pressure imbalance in the other layer. It can stably lock the pressure difference fluctuation range between the upper and lower cavities, effectively solving the problems of shaking, wrinkling, and edge warping caused by pressure difference fluctuations in thin, flexible substrates such as lithium battery electrodes, significantly improving product yield. The system uses two levels of feedforward factors—wind speed regulation and differential pressure regulation—to pre-correct pressure regulation and heating parameters, completing pre-compensation before temperature lag fluctuations occur. Combined with dual-path temperature control branches for fresh air preheating and zoned heat sources, one path uniformly regulates the intake base temperature, while the other path precisely supplements temperature in different zones. This, along with closed-loop correction of heating output to address overall temperature deviation, overcomes the shortcomings of traditional single-parameter independent PID control, such as temperature control lag and large temperature differences, achieving a coordinated balance between wind speed, negative pressure, and temperature. For various production disturbances such as material inflow / outflow, furnace door opening / closing, filter clogging, and changes in ambient temperature and humidity, the system automatically and dynamically corrects the flow field model, differential pressure, and heating parameters, eliminating the need for manual on-site equipment recalibration. The fan filter is equipped with a pressure monitoring device that monitors the filter differential pressure in real time, determining the filter clogging status based on the differential pressure signal. It can stably maintain a balanced wind field, pressure field, and temperature field under complex operating conditions such as no-load, full-load, maintenance, and environmental fluctuations, reducing manual debugging workload and optimizing waste heat recovery to lower overall equipment energy consumption.

[0098] This solution features a seamless, through-type double-layer drying oven structure, equipped with a three-dimensional matrix multi-point sensor acquisition module. This module fully covers key points such as the upper and lower stratigraphic layers, the inlet, the outlet, and the negative pressure chamber, simultaneously acquiring three types of data: wind speed, pressure difference, and temperature. All acquired parameters participate in closed-loop control, with no idle sensor features. It is also equipped with an independent variable frequency fan, multi-stage electric air valves, waste heat recovery, and a complete set of actuators for zoned heating. The hardware collaborative control logic is complete, resulting in high control precision and strong mass production stability.

[0099] Corresponding to the oven multi-parameter collaborative equalization control method in the above embodiment, Figure 5 This is a structural block diagram of a multi-parameter collaborative equalization control device for an oven provided in one embodiment of this application.

[0100] Reference Figure 5 The oven multi-parameter coordinated equalization control device 200 includes: The monitoring module 210 is used to monitor and obtain the wind speed data, pressure difference data and temperature data corresponding to each area based on the sensors set in each area of ​​the oven. The adjustment module 220 is used to process the wind speed data corresponding to each region using a pre-built global flow field distribution model, and adjust each region according to the processing results. The decoupled differential pressure control module 230 is used to perform decoupled differential pressure control on the double-layer drying chamber of the oven based on the differential pressure data corresponding to each region. The acquisition module 240 is used to acquire real-time wind speed adjustment and real-time differential pressure adjustment. The control module 250 is used to use the real-time wind speed adjustment and real-time differential pressure adjustment as feedforward compensation parameters, and combine them with the collected temperature data to form a closed-loop feedback to regulate the output power of the temperature control branch of the oven.

[0101] Optionally, the adjustment module is specifically used for: By using a global flow field distribution model, the wind speed data corresponding to each region is compared with the wind speed benchmark interval corresponding to each region to obtain the local wind speed deviation corresponding to each region. Calculate the local wind speed non-uniformity based on the wind speed deviation in the local area; If the wind speed deviation in any local area exceeds the wind speed deviation threshold and the local wind speed unevenness exceeds the target value, then any local area is determined to be an abnormal area. The air duct adjustment components in the oven are adjusted according to the location of the abnormal area and the deviation value of the local wind speed deviation.

[0102] Optionally, the double-layer drying chamber includes an upper drying chamber and a lower drying chamber, and each region includes at least an upper drying chamber and a lower drying chamber. The decoupled differential pressure control module is specifically used for: The pressure difference data of the upper drying chamber, lower drying chamber, and negative pressure chamber are compared with the preset standard pressure difference range of the double-layer chamber; If the pressure difference corresponding to the upper drying chamber deviates from the first target pressure difference range, the upper matching air volume drive mechanism and / or air valve assembly corresponding to the upper drying chamber will be driven to adjust the pressure difference corresponding to the upper drying chamber. If the pressure difference corresponding to the lower drying chamber deviates from the second target pressure difference range, the lower matching air volume drive mechanism and / or air valve assembly corresponding to the lower drying chamber will be driven to adjust the pressure difference corresponding to the lower drying chamber. Control the pressure difference fluctuation between the upper and lower drying chambers within a preset fluctuation range.

[0103] Optional, control module, specifically used for: The real-time wind speed adjustment is used as the first compensation factor to correct the differential pressure adjustment parameter, and the corrected differential pressure adjustment parameter is obtained. Based on the corrected differential pressure adjustment parameters, the air volume drive mechanism and the air valve assembly are driven to complete the chamber pressure regulation; Based on the temperature data collected in each region, the temperature deviation between the temperature data and the target temperature is compared. Based on the temperature deviation, determine the heating control parameters; The heating control parameters are corrected by using the real-time differential pressure adjustment as the second compensation factor to obtain the target heating control parameters; The target heating control parameters are sent to the first temperature control branch and the second temperature control branch. The first temperature control branch regulates the basic temperature of the oven intake air through the intake preheating component, airflow distribution valve, and waste heat reuse mechanism. The second temperature control branch independently adjusts the heat source output power of each zone according to the different zones of the oven.

[0104] Optionally, the device also includes a working condition update module, which is specifically used for: Obtain operating condition change information corresponding to at least one target operating condition; Based on information about changes in operating conditions, the target parameters are adjusted. The target operating conditions include at least one of the following: material inlet and outlet, furnace door opening and closing, filter resistance change, and ambient temperature and humidity fluctuation; the target parameters include at least one of the following: global flow field distribution model parameters, differential pressure adjustment parameters, and heating control parameters.

[0105] Optionally, the oven is an integrated through-type oven with no partitions between the front and back. The oven is equipped with a double-layer drying chamber, a circulating variable frequency fan, a dehumidification variable frequency fan, electric air inlet and outlet valves, an adjustable air guide valve, and a multi-point sensor acquisition module.

[0106] As can be seen from the above, the multi-parameter collaborative equalization control device for an oven provided in this application first monitors the wind speed, differential pressure, and temperature data corresponding to each region based on sensors installed in each region of the oven. Then, it uses a pre-constructed global flow field distribution model to process the wind speed data corresponding to each region and adjusts each region according to the processing results. Afterward, based on the differential pressure data corresponding to each region, it performs decoupled differential pressure control on the double-layer drying chamber of the oven and then obtains the real-time wind speed adjustment and real-time differential pressure adjustment. The real-time wind speed adjustment and real-time differential pressure adjustment are then used as feedforward compensation parameters and combined with the collected temperature data to form a closed-loop feedback to regulate the output power of the temperature control branch of the oven. Therefore, by accurately locating areas of uneven airflow through multi-point matrix acquisition and threshold determination, and by linking air valves and flow guiding structures to adaptively correct deviations, the problems of airflow stratification, local eddies, and dead zones in traditional drying ovens are completely solved. This significantly improves the uniformity of airflow across the entire area, breaks the traditional unified control mode of overall negative pressure, independently calibrates the pressure difference between upper and lower layers, and maintains a stable negative pressure difference. This fundamentally suppresses the shaking, warping, and wrinkling deformation of flexible substrates such as lithium battery electrodes during the drying process, and significantly improves product yield.

[0107] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the above-described division of functional units and modules is merely an example. In practical applications, the above functions can be assigned to different functional units and modules as needed, that is, the internal structure of the device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiments can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit. Furthermore, the specific names of the functional units and modules are only for easy differentiation and are not intended to limit the scope of protection of this application. The specific working process of the units and modules in the above system can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0108] Figure 6 This is a schematic diagram of the structure of the electronic device provided in an embodiment of this application. For example... Figure 6 As shown, the electronic device 5 of this embodiment includes: at least one processor 50 ( Figure 6 The diagram shows only one processor, memory 51, and computer program 52 stored in memory 51 and executable on at least one processor 50. When processor 50 executes computer program 52, it implements the steps in any of the above embodiments of the multi-parameter collaborative equalization control method for ovens.

[0109] The electronic device can be a desktop computer, laptop, handheld computer, or cloud server, etc. This electronic device may include, but is not limited to, a processor and memory. Those skilled in the art will understand that... Figure 6 This is merely an example of electronic device 5 and does not constitute a limitation on electronic device 5. It may include more or fewer components than shown in the figure, or combine certain components, or different components. For example, it may also include input / output devices, network access devices, etc.

[0110] The processor 50 may be a central processing unit, or it may be other general-purpose processors, digital signal processors, application-specific integrated circuits, off-the-shelf programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or any conventional processor.

[0111] In some embodiments, memory 51 may be an internal storage unit of electronic device 5, such as a hard disk or memory of electronic device 5. In other embodiments, memory 51 may be an external storage device of electronic device 5, such as a plug-in hard disk, smart memory card, secure digital card, flash memory card, etc., equipped on electronic device 5. Furthermore, memory 51 may include both internal storage units and external storage devices of electronic device 5. Memory 51 is used to store operating system, application programs, bootloaders, data, and other programs, such as program code of computer programs. Memory 51 may also be used to temporarily store data that has been output or will be output.

[0112] This application also provides a computer-readable storage medium storing a computer program that, when executed by a processor, can implement the steps in the above-described method embodiments.

[0113] This application provides a computer program product that, when run on an electronic device, enables the electronic device to implement the steps described in the various method embodiments above.

[0114] If the integrated unit is implemented as a software functional unit and used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a computer-readable storage medium, and when executed by a processor, it can implement the steps of the various method embodiments described above. The computer program includes computer program code, which can be in the form of source code, object code, executable files, or certain intermediate forms. The computer-readable medium can include at least: any entity or device capable of carrying computer program code to a device / electronic device, a recording medium, a computer memory, a read-only memory, a random access memory, an electrical carrier signal, a telecommunication signal, and a software distribution medium. Examples include USB flash drives, portable hard drives, magnetic disks, or optical disks.

[0115] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0116] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0117] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0118] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0119] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A multi-parameter coordinated equalization control method for an oven, characterized in that, include: Based on sensors installed in various areas of the oven, wind speed data, pressure difference data, and temperature data corresponding to each area are monitored and obtained. A pre-built global flow field distribution model is used to process the wind speed data corresponding to each region, and the region is adjusted according to the processing results. Based on the differential pressure data corresponding to each region, decoupled differential pressure control is performed on the double-layer drying chamber of the oven; Obtain real-time wind speed adjustment and real-time differential pressure adjustment; The real-time wind speed adjustment and real-time differential pressure adjustment are used as feedforward compensation parameters, and combined with the collected temperature data to form a closed-loop feedback to regulate the output power of the temperature control branch of the oven.

2. The method according to claim 1, characterized in that, The process employs a pre-built global flow field distribution model to process the wind speed data corresponding to each region, and adjusts each region based on the processing results, including: By using a global flow field distribution model, the wind speed data corresponding to each region is compared with the wind speed benchmark interval corresponding to each region to obtain the local wind speed deviation corresponding to each region. Calculate the local wind speed non-uniformity based on the local wind speed deviation. If the wind speed deviation in any local area exceeds the wind speed deviation threshold and the local wind speed non-uniformity exceeds the target value, then any local area is determined to be an abnormal area. The air duct adjustment components in the oven are adjusted according to the location of the abnormal area and the deviation value of the wind speed deviation in the local area.

3. The method according to claim 1, characterized in that, The double-layer drying chamber includes an upper drying chamber and a lower drying chamber. Each region includes at least the upper drying chamber and the lower drying chamber. The decoupled differential pressure control of the double-layer drying chamber based on the differential pressure data corresponding to each region includes: The pressure difference data of the upper drying chamber, the lower drying chamber, and the negative pressure chamber are compared with the preset standard pressure difference range of the double-layer chamber; If the pressure difference corresponding to the upper drying chamber deviates from the first target pressure difference range, the upper matching air volume drive mechanism and / or air valve assembly corresponding to the upper drying chamber are driven to adjust the pressure difference corresponding to the upper drying chamber. If the pressure difference corresponding to the lower drying chamber deviates from the second target pressure difference range, the lower matching air volume drive mechanism and / or air valve assembly corresponding to the lower drying chamber are driven to adjust the pressure difference corresponding to the lower drying chamber. The pressure difference fluctuation between the upper drying chamber and the lower drying chamber is controlled within a preset fluctuation range.

4. The method according to claim 1, characterized in that, The step of using the real-time wind speed adjustment and real-time differential pressure adjustment as feedforward compensation parameters, combined with the collected temperature data to form a closed-loop feedback, to regulate the output power of the temperature control branch of the oven includes: The real-time wind speed adjustment amount is used as the first compensation factor to correct the differential pressure adjustment parameter, and the corrected differential pressure adjustment parameter is obtained. Based on the corrected differential pressure adjustment parameters, the air volume drive mechanism and the air valve assembly are driven to complete the chamber pressure regulation; Based on the temperature data collected in each region, the temperature deviation between the temperature data and the target temperature is compared. Based on the temperature deviation, the heating control parameters are determined; The heating control parameters are corrected by using the real-time differential pressure adjustment amount as a second compensation factor to obtain the target heating control parameters; The target heating control parameters are sent to the first temperature control branch and the second temperature control branch. The first temperature control branch regulates the basic temperature of the oven intake air in collaboration with the air intake preheating component, airflow distribution valve, and waste heat reuse mechanism. The second temperature control branch independently adjusts the heat source output power of each zone according to different zones of the oven.

5. The method according to claim 1, characterized in that, Also includes: Obtain operating condition change information corresponding to at least one target operating condition; Based on the aforementioned operating condition change information, the target parameters are corrected. The target operating conditions include at least one of the following: material inlet / outlet, furnace door opening / closing, filter resistance change, and ambient temperature and humidity fluctuation; the target parameters include at least one of the following: global flow field distribution model parameters, differential pressure adjustment parameters, and heating control parameters.

6. The method according to any one of claims 1-5, characterized in that, The oven is a one-piece, uninterrupted, through-type oven, equipped with a circulating variable frequency fan, an exhaust variable frequency fan, electric inlet and exhaust valves, an adjustable airflow guide valve, and a multi-point sensor acquisition module. The variable frequency fan is used to drive the hot air circulation inside the double-layer drying chamber. The dehumidification variable frequency fan, in conjunction with the inlet and outlet electric air valves, enables dehumidification and negative pressure regulation of the drying oven. The adjustable air guide valve is installed in the air duct of the double-layer drying chamber to adjust the airflow distribution in the chamber. The multi-point sensing acquisition module is arranged at multiple measuring points in the double-layer drying chamber to collect temperature and pressure difference signals in real time and upload them to the control system.

7. A multi-parameter coordinated equalization control device for an oven, characterized in that, include: The monitoring module is used to monitor and obtain the wind speed data, pressure difference data and temperature data corresponding to each area based on the sensors set in each area of ​​the oven; The adjustment module is used to process the wind speed data corresponding to each region using a pre-built global flow field distribution model, and adjust each region according to the processing results. The decoupled differential pressure control module is used to perform decoupled differential pressure control on the double-layer drying chamber of the oven based on the differential pressure data corresponding to each region. The acquisition module is used to acquire real-time wind speed adjustment and real-time differential pressure adjustment. The control module is used to use the real-time wind speed adjustment and real-time differential pressure adjustment as feedforward compensation parameters, and combine them with the collected temperature data to form a closed-loop feedback to regulate the output power of the temperature control branch of the oven.

8. The apparatus according to claim 7, characterized in that, The adjustment module is specifically used for: By using a global flow field distribution model, the wind speed data corresponding to each region is compared with the wind speed benchmark interval corresponding to each region to obtain the local wind speed deviation corresponding to each region. Calculate the local wind speed non-uniformity based on the local wind speed deviation. If the wind speed deviation in any local area exceeds the wind speed deviation threshold and the local wind speed non-uniformity exceeds the target value, then any local area is determined to be an abnormal area. The air duct adjustment components in the oven are adjusted according to the location of the abnormal area and the deviation value of the wind speed deviation in the local area.

9. An electronic device, characterized in that, The method includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor, when executing the computer program, implements the steps of the method as described in any one of claims 1 to 6.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store a computer program, which is loaded by a processor to perform the steps of the method according to any one of claims 1 to 6.

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