Dry-method electrode mixing coordinated regulation and control method and system based on variable-pitch blades

Abstract

The invention relates to a dry-method electrode mixing coordinated regulation and control method and system based on variable-pitch blades, and belongs to the technical field of dry-method electrode production processes. The method comprises the following steps: obtaining dry-method electrode powder regulation and control parameters, establishing a powder mixing attribute library to analyze the particle size and the agglomeration state of powder, and extracting powder fibrosis data; a cooperative regulation and control system is constructed, the rotating speed and the rotating angle weight of a variable-pitch blade are dynamically adjusted based on a variable-pitch feedback control algorithm, and a dry-method electrode mixing regulation and control instruction is generated; carrying out coordination verification on the movement of the variable-pitch blade, and outputting material mixing coordination feedback when detecting that the material temperature exceeds a fibration threshold value; and based on the mixed material collaborative feedback, synchronously matching the movement of the stirring shaft and the variable-pitch blade, removing the attribute of the disturbed powder in the mixed material, monitoring the fluctuation of the material temperature in real time by combining with the fibrosis degree of the powder, and carrying out independent compensation on the variable-pitch blade.

Description

Technical Field

[0001] This invention belongs to the field of dry electrode production technology, specifically relating to a method and system for synergistic control of dry electrode mixing based on variable pitch blades. Background Technology

[0002] As lithium-ion batteries develop towards higher energy density, higher safety, and green manufacturing, dry electrode fabrication processes are gradually becoming an important development direction in the electrode manufacturing field due to their advantages such as not using organic solvents, low energy consumption, and environmental friendliness. The mixing process in dry electrode fabrication is a key step, and its mixing uniformity and powder structure directly affect the electrode film quality, electrochemical performance, and cycle stability.

[0003] Existing dry electrode mixing equipment mostly uses fixed-structure paddles or simple variable-speed stirring to mix powders, relying mainly on empirical parameters to set stirring speed, mixing time, and temperature control conditions. However, in the mixing process involving high binder content or high specific surface area conductive materials, the powder is prone to fibrous evolution and agglomeration rearrangement under strong shear and compaction, resulting in uneven shear distribution and significant local temperature rise within the mixing system. This leads to problems such as powder structure instability and decreased mixing consistency.

[0004] Furthermore, existing technologies generally lack quantitative characterization methods for the degree of powder fibrosis, making it difficult to establish an engineering mapping relationship between agitation energy input, powder morphology changes, and mixing performance. This results in the inability to achieve dynamic control of the mixing process based on the powder state. In particular, in multi-blade collaborative mixing scenarios, the rotational speed, angle, and phase difference between different blades can easily generate torque interference and powder flow coupling effects, further exacerbating the instability in the mixing process.

[0005] Typically, adjustments are made solely based on the overall temperature of the cavity, failing to adequately consider the coupling relationship between material temperature fluctuations and powder fibrosis evolution, making it difficult to suppress abnormal fibrosis trends during the mixing process. These issues result in significant shortcomings in the existing dry electrode mixing process regarding mixing stability, repeatability, and scalability.

[0006] Therefore, there is an urgent need for a dry electrode mixing method that can integrate powder fibrous state perception, variable pitch blade coordinated control, and dynamic temperature feedback, so as to achieve precise control of the mixing process and stable adjustment of the powder structure state. Summary of the Invention

[0007] To address the aforementioned problems in the prior art, this invention provides a method for coordinated control of dry electrode mixing based on variable-pitch blades. The objective of this invention can be achieved through the following technical solutions: S1: Obtain the dry electrode powder control parameters, establish a powder mixing attribute library to analyze the particle size and agglomeration state of the powder, and extract the powder fiberization data based on the engineering mapping relationship between the stirring energy input and the powder morphology change. S2: Construct a collaborative control system based on the powder fiberization data, dynamically adjust the rotation speed and angle weight of the variable pitch blade based on the variable pitch feedback control algorithm, and combine the material temperature of the mixing chamber with the cooling water temperature to generate dry electrode mixing control instructions. S3: Executes dry electrode mixing control commands, verifies the coordination of variable pitch blade motion, and evaluates the powder state in combination with blade torque and mixing uniformity. When the material temperature is detected to exceed the fiberization threshold, it outputs mixing coordination feedback. S4: Based on the synchronous matching of the mixing shaft and the variable pitch blades through the collaborative feedback of the mixing, the perturbed powder properties in the mixture are removed, and the temperature fluctuation is monitored in real time in conjunction with the degree of powder fiberization, so as to independently compensate the variable pitch blades.

[0008] Specifically, the method for obtaining the dry electrode powder control parameters is as follows: based on the mixing and stirring shaft system information, the collected powder structure data is analyzed for fibrosis, fibrosis characterization index is constructed, the fibrosis state of the powder is quantitatively characterized, and the fibrosis characterization results are correlated and mapped with the mixing process parameters to obtain the dry electrode powder mixing data.

[0009] Specifically, the method for constructing the powder mixing attribute library is as follows: the powder attribute parameters and powder fiberization data obtained under different powder formulations and mixing conditions are classified and stored; feature annotation is performed according to the powder attribute parameters and mixing condition parameters; and the fiberization response coefficient corresponding to each type of powder is associated with the number to construct the powder mixing attribute library.

[0010] Specifically, the method for extracting the powder fiberization data is as follows: the fiberization rebound time constant of the feature points in the curve is calculated based on the correspondence between particle distribution intensity and powder fiberization characteristics to extract the fiberization response feature parameters of the powder at different stirring speed nodes, and the time segments exceeding the powder mixing fluctuation threshold are marked as fiberization response intervals to extract the powder fiberization data.

[0011] Specifically, the construction method of the collaborative control system is as follows: taking the material temperature and cooling water temperature in the mixing chamber as constraints, establishing the mapping relationship between the powder structure state and the variable pitch blade speed and angle parameters based on the powder fiberization data and mixing working parameters, and modeling the dynamic adjustment strategy of the variable pitch blade speed and angle weights to obtain the collaborative control system.

[0012] Specifically, the method for adjusting the weight of the variable pitch blades in the variable pitch feedback control algorithm is as follows: based on the rotational speed, rotation angle and stirring shaft torque signal of each variable pitch blade, the current blade motion state is detected, and combined with the cavity working condition data during the mixing process, it is compared with the preset mixing target parameters to calculate the deviation values ​​of the blade rotational speed, rotation angle and fiber characterization index, and the rotational speed and rotation angle weights of the variable pitch blades are adjusted.

[0013] Specifically, the method for generating the dry electrode mixing control command is as follows: based on the powder fiberization response characteristic parameters and mixing condition constraints, a material temperature control model is constructed to plan the variable pitch blade speed trajectory, the rotation angle offset is dynamically corrected, and the cooling water flow rate linkage factor is incorporated according to the fiberization heat release effect to generate the dry electrode mixing control command.

[0014] Specifically, the method for verifying the coordination of the variable-pitch blade motion is as follows: the adjusted blade speed and angle parameters are input into a multi-subject collaborative simulation framework; the torque interference between blades and the coupling effect of powder flow are evaluated based on the variable-pitch blade torque and the powder flow field; the motion trajectory is checked to see if it meets the preset mixing turbulence threshold and fiberization requirements; if there is an incoordination interval, the blade phase difference is dynamically adjusted through a phase difference adaptive algorithm, and the stability response under multiple working conditions is simulated to generate a coordination verification report.

[0015] Specifically, the method for generating the mixing collaborative feedback is as follows: integrating powder fiberization characterization indicators and disturbance noise, determining whether the current mixing state deviates from the target fiberization curve, and for scenarios where the deviation exceeds the adaptive threshold, activating the feedback loop mechanism to calculate the compensation vector, and decomposing and weighting the compensation vector to generate a mixing collaborative feedback package containing priority ordering for strain pitch blade speed, rotation angle and temperature control adjustment parameters respectively.

[0016] Specifically, the coordinated control system also includes jacket cooling water temperature detection and material temperature detection; The jacket cooling water temperature detection: Combined with the fluid dynamics finite element method, the water temperature gradient distribution is simulated and monitored in real time at the nodes of the jacket flow channel. Based on the attenuation of the node heat exchange efficiency, the variable pitch blade speed is linked to reduce frictional heat generation and regulate the thermal balance of the fiberization process. The material temperature detection identifies the evolution of local hot spots in the powder induced by fibrosis. When the material temperature exceeds the critical threshold for fibrosis set in the powder property library, an emergency cooling protocol is triggered and the heat release peak is recorded as a quantitative indicator of the degree of fibrosis.

[0017] Specifically, the method for independent compensation of the variable pitch blades is as follows: the material mixing collaborative feedback is decomposed into discrete compensation subdomains according to the spatial distribution and time response characteristics of the variable pitch blades, a dynamic weight factor is assigned to each subdomain, the compensation signal is superimposed segment by segment to the servo drive quantity of the target blade, and the local disturbance of a single blade is isolated and compensated by combining the online light scattering monitoring data of the powder agglomeration state.

[0018] Specifically, a dry electrode mixing and synergistic control system based on variable-pitch blades includes: Powder fiberization data extraction module: acquires dry electrode powder control parameters, establishes a powder mixing attribute library to analyze the particle size and agglomeration state of the powder, and extracts powder fiberization data based on the engineering mapping relationship between the stirring energy input and the powder morphology change. Mixing and Coordination Control Instruction Generation Module: Constructs a coordination control system based on the powder fiberization data, dynamically adjusts the rotation speed and angle weight of the variable pitch blade based on the variable pitch feedback control algorithm, and generates dry electrode mixing and control instructions in conjunction with the material temperature of the mixing chamber and the cooling water temperature. Blade coordination verification feedback module: executes dry electrode mixing control command, performs coordination verification of variable pitch blade motion, and evaluates powder state by combining blade torque and mixing uniformity. When the material temperature is detected to exceed the fiberization threshold, mixing coordination feedback is obtained. Temperature suppression independent compensation module: Based on the synchronous matching of the mixing collaborative feedback and the movement of the stirring shaft and the variable pitch blade, the disturbable powder properties in the mixture are removed, and the temperature fluctuation is monitored in real time in combination with the degree of powder fiberization, so as to independently compensate the variable pitch blade.

[0019] The beneficial effects of this invention are as follows: Compared with existing technologies, the dry electrode mixing collaborative control method based on variable-pitch blades provided by this invention achieves refined and state-aware control of the dry electrode mixing process by introducing powder fiberization data as the core control variable. By establishing a powder mixing attribute library and analyzing powder particle size and agglomeration state, combined with the engineering mapping relationship between stirring energy input and powder morphology changes, the degree of powder fiberization can be quantitatively characterized, effectively avoiding the parameter mismatch problem caused by the lack of state feedback in traditional dry mixing processes.

[0020] A collaborative control system was constructed, utilizing a variable-pitch feedback control algorithm to dynamically adjust the rotational speed and angle weights of the variable-pitch impellers, and to collaboratively regulate the material temperature and cooling water temperature in the mixing chamber. This achieved coupled optimization of the mixing mechanical action and temperature control process, significantly improving the stability and consistency of the mixing process. Through coordination verification of the variable-pitch impeller motion, and by comprehensively evaluating the powder state in conjunction with impeller torque and mixing uniformity, timely collaborative feedback in mixing can be generated, effectively suppressing local over-shearing and abnormal fiberization phenomena.

[0021] Based on the synergistic feedback of the mixing process, independent compensation and adjustment of the variable-pitch impeller are implemented, synchronously matching the movement of the stirring shaft and the impeller. This isolates the impact of local disturbances on the overall mixing state and combines the real-time monitoring of material temperature fluctuations with the degree of powder fiberization, thereby improving the adaptability of the mixing process to changes in operating conditions. This method helps to improve the repeatability and controllability of dry electrode mixing quality, providing reliable technical support for the large-scale application of dry electrode technology. Attached Figure Description

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0023] Figure 1 This is a schematic diagram of the framework of a dry electrode mixing and synergistic control method and system based on variable pitch blades according to the present invention.

[0024] Figure 2 This is a schematic diagram of the collaborative control system of a dry electrode mixing collaborative control method and system based on variable pitch blades according to the present invention. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by the present invention to achieve the intended purpose, the following detailed description of the specific implementation methods, structures, features and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided.

[0026] Please see Figure 1 A method for coordinated control of dry electrode mixing based on variable pitch blades: S1: Obtain the dry electrode powder control parameters, establish a powder mixing attribute library to analyze the particle size and agglomeration state of the powder, and extract the powder fiberization data based on the engineering mapping relationship between the stirring energy input and the powder morphology change. S2: Construct a collaborative control system based on the powder fiberization data, dynamically adjust the rotation speed and angle weight of the variable pitch blade based on the variable pitch feedback control algorithm, and combine the material temperature of the mixing chamber with the cooling water temperature to generate dry electrode mixing control instructions. S3: Executes dry electrode mixing control commands, verifies the coordination of variable pitch blade motion, and evaluates the powder state in combination with blade torque and mixing uniformity. When the material temperature is detected to exceed the fiberization threshold, it outputs mixing coordination feedback. S4: Based on the synchronous matching of the mixing shaft and the variable pitch blades through the collaborative feedback of the mixing, the perturbed powder properties in the mixture are removed, and the temperature fluctuation is monitored in real time in conjunction with the degree of powder fiberization, so as to independently compensate the variable pitch blades.

[0027] In this embodiment, the method for obtaining the dry electrode powder control parameters is as follows: based on the mixing and stirring shaft system information, the collected powder structure data is analyzed for fibrosis, a fibrosis characterization index is constructed, the fibrosis state of the powder is quantitatively characterized, and the fibrosis characterization results are correlated and mapped with the mixing process parameters to obtain the dry electrode powder mixing data.

[0028] In this embodiment, the method for constructing the powder mixing attribute library is as follows: the powder attribute parameters and powder fiberization data obtained under different powder formulations and mixing conditions are classified and stored; feature annotation is performed according to the powder attribute parameters and mixing condition parameters; and the fiberization response coefficient corresponding to each type of powder is associated with the number to establish a record, thereby constructing the powder mixing attribute library.

[0029] This embodiment uses a dual-pitch blade dry electrode mixing device as an example to illustrate a collaborative control method for dry electrode mixing based on pitch blades. The effective volume of the mixing chamber is 120 L. Two sets of pitch blades with independently adjustable rotation speed and angle are installed within the mixing chamber. The initial blade rotation speed is set to 300 rpm, the initial rotation angle is 35°, and the target material temperature control range is 45 ℃~60 ℃.

[0030] (I) Construction of a Multi-Agent Collaborative Simulation Framework In the process of mixing and controlling materials, each variable-pitch blade is regarded as an independent control subject, and the powder flow field is regarded as a common coupling environment, so as to construct a multi-subject collaborative simulation framework.

[0031] The state vector of each blade body is defined as follows: , Where, ω i (t) represents the rotational speed of the i-th blade, θ i (t) is the blade rotation angle, τ i (t) represents the real-time torque feedback value. The powder flow field coupling state is defined as: , Among them, E s (t) represents the energy input for agitation per unit time.

[0032] Numerical simulation was used to calculate the powder velocity distribution and shear strength under different blade parameter combinations to evaluate the coupling effect between blade torque interference and powder flow.

[0033] (ii) Setting the target fibrosis curve Based on experimental calibration, a fiberization curve for the target powder was established to constrain the mixing process. The fiberization characterization index F(t) is defined as the fiberization growth rate per unit time, and its target curve is expressed as follows: , Where F0=0.15 is the initial fiberization baseline value, k=0.08 is the empirical fitting coefficient, and when the real-time detected F(t) exceeds the ±10% range of the target curve, it is determined to be a fiberization deviation state.

[0034] (III) Phase Difference Adaptive Algorithm To suppress torque interference between multiple blades, a phase difference adaptive algorithm is introduced. Let the instantaneous phase difference between two blades be Δϕ(t), and its update rule be: , Where α is the phase adjustment step size, with a value of 0.05, and the cost function J is defined as: , in, The variance of the blade torque fluctuation. The variance of the fiberization index is w1:w2=6:4. Through iterative updates, the system converges to a stable phase difference range under different operating conditions (in this embodiment, the stable range is 90°±5°).

[0035] (iv) Emergency Cooling Protocol When the material temperature T is detected during the mixing process m (t) exceeds the fiberization temperature threshold T c At 65℃, the emergency cooling protocol is triggered, and the cooling water temperature control law is set as follows: , Among them, β=0.3, the minimum cooling water temperature is limited to 15 ℃, and the blade speed weighting coefficient is reduced so that the speed decreases linearly by 20% within 10 s to reduce the instantaneous shear energy input.

[0036] Through the above-mentioned synergistic control method, the fluctuation range of the fiberization index during the mixing process was reduced from ±18% to ±6%, the peak material temperature was reduced by about 12 ℃, and the mixing uniformity was improved by about 15%, which verified the significant effect of this method on the stability and controllability of dry electrode mixing.

[0037] In this embodiment, the method for extracting the powder fiberization data is as follows: the fiberization rebound time constant of the feature points in the curve is calculated based on the correspondence between particle distribution intensity and powder fiberization characteristics to extract the fiberization response feature parameters of the powder at different stirring speed nodes, and the time segments exceeding the powder mixing fluctuation threshold are marked as fiberization response intervals to extract the powder fiberization data.

[0038] In this embodiment, the method for constructing the collaborative control system is as follows: taking the material temperature and cooling water temperature in the mixing chamber as constraints, establishing a mapping relationship between the powder structure state and the variable pitch blade speed and angle parameters based on the powder fiberization data and mixing working parameters, and modeling the dynamic adjustment strategy of the variable pitch blade speed and angle weights to obtain the collaborative control system.

[0039] In this embodiment, as Figure 2 The diagram illustrates the synergistic application of jacketed cooling water temperature detection and material temperature detection during the mixing process, using a dry electrode mixing device with a jacketed cooling structure as an example. The mixing device includes a mixing chamber, variable-pitch impellers, a stirring shaft, and a cooling jacket disposed on the outer wall of the mixing chamber, which is connected to an external cooling water circulation system.

[0040] Jacket cooling water temperature detection A first temperature sensor and a second temperature sensor are respectively installed on the inlet and outlet water pipes of the cooling jacket to detect the cooling water inlet temperature T in real time. in With outlet temperature T out In this embodiment, the temperature sensor is a platinum resistance temperature sensor (Pt100), with a measurement accuracy of ±0.2 ℃ and a sampling period of 1 s.

[0041] The cooling water temperature rise is obtained by calculating the difference between the inlet temperature and the outlet temperature. The cooling water temperature rise is used to characterize the heat transferred from the mixing chamber to the cooling jacket and is input into the mixing control system as a cooling efficiency evaluation parameter.

[0042] Material temperature detection A third temperature sensor is installed inside the mixing chamber near the main powder mixing area to detect the powder temperature T in real time. m The third temperature sensor is a wear-resistant thermocouple with an anti-wear coating on its probe to avoid interfering with the powder mixing process.

[0043] The material temperature sampling period is 0.5s. The collected material temperature data is used to monitor the temperature fluctuation during the mixing process in real time and compare it with the preset fiberization temperature threshold T. c The temperature is compared to 65℃. The inlet and outlet temperatures of the jacket cooling water and the material temperature are synchronously input into the mixing control unit to comprehensively judge the thermal balance state of the mixing process. When the material temperature is detected to be close to the fiberization temperature threshold and the cooling water temperature rise continues to increase, the control system determines that the current cooling capacity is insufficient and triggers a command to increase the cooling water flow rate or decrease the cooling water temperature.

[0044] In this embodiment, the method for adjusting the weight of the variable pitch blades by the variable pitch feedback control algorithm is as follows: based on the rotational speed, rotation angle and stirring shaft torque signal of each variable pitch blade, the current blade motion state is detected, and combined with the cavity working condition data during the mixing process, it is compared with the preset mixing target parameters to calculate the deviation values ​​of the blade rotational speed, rotation angle and fiber characterization index, and the rotational speed and rotation angle weights of the variable pitch blades are adjusted.

[0045] In this embodiment, the method for generating the dry electrode mixing control command is as follows: based on the powder fiberization response characteristic parameters and mixing condition constraints, a material temperature control model is constructed to plan the variable pitch blade speed trajectory, the rotation angle offset is dynamically corrected, and the cooling water flow rate linkage factor is incorporated according to the fiberization heat release effect to generate the dry electrode mixing control command.

[0046] In this embodiment, the method for verifying the coordination of the variable-pitch blade motion is as follows: the adjusted blade rotation speed and angle parameters are input into a multi-subject collaborative simulation framework; the torque interference between blades and the coupling effect of powder flow are evaluated based on the variable-pitch blade torque and the powder flow field; the motion trajectory is checked to see if it meets the preset mixing turbulence threshold and fiberization requirements; if there is an incoordination interval, the blade phase difference is dynamically adjusted through a phase difference adaptive algorithm, and the stability response under multiple working conditions is simulated to generate a coordination verification report.

[0047] In this embodiment, the method for generating the mixing collaborative feedback is as follows: merging powder fiberization characterization indicators and disturbance noise, determining whether the current mixing state deviates from the target fiberization curve, and for scenarios where the deviation exceeds the adaptive threshold, activating the feedback loop mechanism to calculate the compensation vector, and decomposing and weighting the compensation vector to generate a mixing collaborative feedback package containing priority ordering for strain pitch blade speed, rotation angle, and temperature control adjustment parameters.

[0048] In this embodiment, the collaborative control system also includes jacket cooling water temperature detection and material temperature detection; The jacket cooling water temperature detection: Combined with the fluid dynamics finite element method, the water temperature gradient distribution is simulated and monitored in real time at the nodes of the jacket flow channel. Based on the attenuation of the node heat exchange efficiency, the variable pitch blade speed is linked to reduce frictional heat generation and regulate the thermal balance of the fiberization process. The material temperature detection identifies the evolution of local hot spots in the powder induced by fibrosis. When the material temperature exceeds the critical threshold for fibrosis set in the powder property library, an emergency cooling protocol is triggered and the heat release peak is recorded as a quantitative indicator of the degree of fibrosis.

[0049] In this embodiment, the method for independent compensation of the variable pitch blade is as follows: the material mixing collaborative feedback is decomposed into discrete compensation subdomains according to the spatial distribution and time response characteristics of the variable pitch blade, a dynamic weight factor is assigned to each subdomain, the compensation signal is superimposed segment by segment to the servo drive quantity of the target blade, and the local disturbance of a single blade is isolated and compensated by combining the online light scattering monitoring data of the powder agglomeration state.

[0050] This invention also provides a dry electrode mixing and synergistic control system based on variable-pitch blades, specifically including: Powder fiberization data extraction module: acquires dry electrode powder control parameters, establishes a powder mixing attribute library to analyze the particle size and agglomeration state of the powder, and extracts powder fiberization data based on the engineering mapping relationship between the stirring energy input and the powder morphology change. Mixing and Coordination Control Instruction Generation Module: Constructs a coordination control system based on the powder fiberization data, dynamically adjusts the rotation speed and angle weight of the variable pitch blade based on the variable pitch feedback control algorithm, and generates dry electrode mixing and control instructions in conjunction with the material temperature of the mixing chamber and the cooling water temperature. Blade coordination verification feedback module: executes dry electrode mixing control command, performs coordination verification of variable pitch blade motion, and evaluates powder state by combining blade torque and mixing uniformity. When the material temperature is detected to exceed the fiberization threshold, mixing coordination feedback is obtained. Temperature suppression independent compensation module: Based on the synchronous matching of the mixing collaborative feedback and the movement of the stirring shaft and the variable pitch blade, the disturbable powder properties in the mixture are removed, and the temperature fluctuation is monitored in real time in combination with the degree of powder fiberization, so as to independently compensate the variable pitch blade.

[0051] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for synergistically regulating dry electrode mixing based on variable pitch blades, characterized in that, include: S1: Obtain the dry electrode powder control parameters, establish a powder mixing attribute library to analyze the particle size and agglomeration state of the powder, and extract the powder fiberization data based on the engineering mapping relationship between the stirring energy input and the powder morphology change. S2: Construct a collaborative control system based on the powder fiberization data, dynamically adjust the rotation speed and angle weight of the variable pitch blade based on the variable pitch feedback control algorithm, and combine the material temperature of the mixing chamber with the cooling water temperature to generate dry electrode mixing control instructions. S3: Executes dry electrode mixing control commands, verifies the coordination of variable pitch blade motion, and evaluates the powder state in combination with blade torque and mixing uniformity. When the material temperature is detected to exceed the fiberization threshold, it outputs mixing coordination feedback. S4: Based on the synchronous matching of the mixing shaft and the variable pitch blades through the collaborative feedback of the mixing, the perturbed powder properties in the mixture are removed, and the temperature fluctuation is monitored in real time in conjunction with the degree of powder fiberization, so as to independently compensate the variable pitch blades.

2. The method of claim 1, wherein, The method for obtaining the dry electrode powder control parameters is as follows: based on the mixing and stirring shaft system information, the collected powder structure data is analyzed for fibrosis, a fibrosis characterization index is constructed, the fibrosis state of the powder is quantitatively characterized, and the fibrosis characterization results are correlated and mapped with the mixing process parameters to obtain the dry electrode powder mixing data.

3. The method of claim 1, wherein, The method for constructing the powder mixing attribute library is as follows: the powder attribute parameters and powder fiberization data obtained under different powder formulations and mixing conditions are classified and stored; feature annotation is performed according to the powder attribute parameters and mixing condition parameters; and the fiberization response coefficient corresponding to each type of powder is associated with the number to construct the powder mixing attribute library.

4. The method of claim 1, wherein, The method for extracting powder fiberization data is as follows: the fiberization rebound time constant of the feature points in the curve is calculated based on the correspondence between particle distribution intensity and powder fiberization characteristics. The fiberization response feature parameters of the powder at different stirring speed nodes are extracted, and the time segments exceeding the powder mixing fluctuation threshold are marked as fiberization response intervals to extract powder fiberization data.

5. The method of claim 2, wherein, The method for constructing the collaborative control system is as follows: taking the material temperature and cooling water temperature in the mixing chamber as constraints, establishing a mapping relationship between the powder structure state and the variable pitch blade speed and angle parameters based on powder fiberization data and mixing conditions, and modeling the dynamic adjustment strategy of the variable pitch blade speed and angle weights to obtain the collaborative control system.

6. The method of claim 5, wherein, The method for adjusting the weight of the variable pitch blades in the variable pitch feedback control algorithm is as follows: based on the rotational speed, rotation angle and stirring shaft torque signal of each variable pitch blade, the current blade motion state is detected, and combined with the cavity working condition data during the mixing process, it is compared with the preset mixing target parameters to calculate the deviation values ​​of blade rotational speed, rotation angle and fiber characterization index, and adjust the rotational speed and rotation angle weights of the variable pitch blades.

7. The method of claim 4, wherein, The method for generating the dry electrode mixing control command is as follows: based on the powder fiberization response characteristic parameters and mixing condition constraints, a material temperature control model is constructed to plan the variable pitch blade speed trajectory, the rotation angle offset is dynamically corrected, and the cooling water flow rate linkage factor is incorporated according to the fiberization heat release effect to generate the dry electrode mixing control command.

8. The method of claim 2, wherein, The method for verifying the coordination of the variable pitch blade motion is as follows: input the adjusted blade speed and rotation angle parameters into the multi-subject collaborative simulation framework, evaluate the torque interference between blades and the coupling effect of powder flow based on the variable pitch blade torque and powder flow field, and detect whether the motion trajectory meets the preset mixing turbulence threshold and fiberization requirements. If an incoordination interval exists, the blade phase difference is dynamically adjusted using a phase difference adaptive algorithm, and the stability response under multiple operating conditions is simulated to generate a coordination verification report.

9. The method according to claim 4, characterized in that, The method for generating the mixing collaborative feedback is as follows: integrate the powder fiberization characterization index and the disturbance noise, determine whether the current mixing state deviates from the target fiberization curve, and for scenarios where the deviation exceeds the adaptive threshold, activate the feedback loop mechanism to calculate the compensation vector, and decompose and weight the compensation vector to generate a mixing collaborative feedback package containing priority ordering for strain pitch blade speed, rotation angle and temperature control adjustment parameters respectively.

10. The method of claim 2, wherein, The coordinated control system also includes jacket cooling water temperature detection and material temperature detection; The jacket cooling water temperature detection: Combined with the fluid dynamics finite element method, the water temperature gradient distribution is simulated and monitored in real time at the nodes of the jacket flow channel. Based on the attenuation of the node heat exchange efficiency, the variable pitch blade speed is linked to reduce frictional heat generation and regulate the thermal balance of the fiberization process. The material temperature detection identifies the evolution of local hot spots in the powder induced by fibrosis. When the material temperature exceeds the critical threshold for fibrosis set in the powder property library, an emergency cooling protocol is triggered and the heat release peak is recorded as a quantitative indicator of the degree of fibrosis.

11. The method of claim 1, wherein, The method for independent compensation of the variable pitch blades is as follows: the material mixing collaborative feedback is decomposed into discrete compensation subdomains according to the spatial distribution and time response characteristics of the variable pitch blades, a dynamic weight factor is assigned to each subdomain, the compensation signal is superimposed segment by segment to the servo drive quantity of the target blade, and the local disturbance of a single blade is isolated and compensated by combining the online light scattering monitoring data of the powder agglomeration state.

12. A variable-pitch blade-based dry-process electrode mixing synergistic regulation system, used to perform the method of any one of claims 1-11, characterized in that, include: Powder fiberization data extraction module: acquires dry electrode powder control parameters, establishes a powder mixing attribute library to analyze the particle size and agglomeration state of the powder, and extracts powder fiberization data based on the engineering mapping relationship between the stirring energy input and the powder morphology change. Mixing and Coordination Control Instruction Generation Module: Constructs a coordination control system based on the powder fiberization data, dynamically adjusts the rotation speed and angle weight of the variable pitch blade based on the variable pitch feedback control algorithm, and generates dry electrode mixing and control instructions in conjunction with the material temperature of the mixing chamber and the cooling water temperature. Blade coordination verification feedback module: executes dry electrode mixing control command, performs coordination verification of variable pitch blade motion, and evaluates powder state by combining blade torque and mixing uniformity. When the material temperature is detected to exceed the fiberization threshold, mixing coordination feedback is obtained. Temperature suppression independent compensation module: Based on the synchronous matching of the mixing collaborative feedback and the movement of the stirring shaft and the variable pitch blade, the disturbable powder properties in the mixture are removed, and the temperature fluctuation is monitored in real time in combination with the degree of powder fiberization, so as to independently compensate the variable pitch blade.

Images