Method and system for calibrating the position of the tabs in the inner and outer rings of a full-tab pole pack

Abstract

The present application belongs to the technical field of lithium ion battery manufacturing, and particularly relates to a method and system for calibrating the position of full-tab tab groups' inner and outer rings. 标 ; S2. Collecting the actual position of the winding tab: obtaining the actual position value of the innermost ring tab P 内实 , the actual position value of the outermost ring tab P 外实 ; S3. Calculating the single-ring tab position deviation: first obtaining the total number of layers N of the tab group, then calculating the total deviation of the outer ring and the total deviation of the inner ring, and finally calculating the single-ring tab position deviation value ΔP according to the total number of layers of the tab group; S4. Winding parameter calibration and correction; S5. Closed-loop verification, rewinding and retesting until the qualified threshold. The present application directly uses the actual measured data of the tab group after winding as the calibration basis, effectively solves the problems of inner ring deviation, outer ring misplacement and layer deviation accumulation in the full-tab winding process, and is suitable for high-speed winding production of square and cylindrical full-tab battery cells.

Description

Technical Field

[0001] This invention belongs to the field of lithium-ion battery manufacturing technology, and particularly relates to a method and system for calibrating the position of the inner and outer rings of the full-tab electrode assembly. Background Technology

[0002] All-tab wound cells offer advantages such as low internal resistance, high-rate discharge, and uniform heat dissipation, making them widely used in power banks, floor scrubbers, and power and energy storage batteries. The core production process for all-tab cells is winding. However, during winding, factors such as electrode thickness dispersion, separator tension fluctuations, radial layer-by-layer expansion, and mechanical transmission gaps can cause inner ring misalignment, outer ring drift, and cumulative interlayer deviations in the tab position. This leads to poor tab alignment, poor welding, and an increased risk of short circuits in the cell.

[0003] Currently, the calibration methods for the position of the full-tie winding electrode in the industry are mainly divided into three categories, and their structures, principles, and shortcomings are as follows: 1. Physical Model Calibration Method: This method establishes a physical model of the winding process and derives the tab position by combining parameters such as the width of the winding needle and the thickness of the electrode / diaphragm, then presets a calibration compensation value. Limitations of this method: It relies solely on theoretical parameter calculations and cannot compensate for dynamic deviations caused by actual winding processes, such as dynamic fluctuations in diaphragm tension and dynamic deviations resulting from layer-by-layer radial expansion.

[0004] 2. Real-time visual correction method: This method uses a visual inspection system to detect the position of the tabs in the current winding layer and adjusts the winding needle angle in real time to achieve single-layer correction. Limitations of this method: It only corrects the deviation of the current winding layer, does not consider the linear cumulative characteristics of winding deviations, and cannot compensate for the overall trend deviation of the entire tab assembly from the inner to the outer ring. This can easily lead to problems such as inner ring misalignment and outer ring drift.

[0005] 3. Single-point calibration method: This method involves detecting the tab deviation at a single position on the outer or inner ring of the wound electrode assembly and then using a fixed coefficient for overall compensation. The drawback of this method is that the fixed coefficient compensation ignores the difference in deviation between the inner and outer rings, leading to poor alignment of the tab positions between layers. This results in inaccurate compensation across all layers and significant cumulative deviation.

[0006] None of the above methods are based on the actual deviation data of the actual wound electrode assembly to achieve full-layer linear deviation compensation from the inner ring to the outer ring. They cannot completely solve the technical problems of inner ring misalignment, outer ring drift, and interlayer deviation accumulation during the full electrode winding process. As a result, the electrode position calibration accuracy is difficult to reach the industry's high requirement of ±0.05mm, which affects the subsequent welding and performance of the battery cell. Summary of the Invention

[0007] The purpose of this invention is to provide a method and system for calibrating the position of the inner and outer rings of the full-ring electrode assembly. By collecting the actual positions of the innermost and outermost rings of the electrode assembly after winding, the single-ring calibration deviation factor is calculated. The winding parameters are used to compensate and correct the winding electrode position layer by layer. The electrode position meets the calibration accuracy through closed-loop verification. Its core is to evenly distribute the deviation difference between the inner and outer rings to each winding layer to achieve full-level linear compensation.

[0008] To achieve the above objectives, the technical solution adopted by the present invention is as follows: This application provides a method for calibrating the position of the inner and outer windings of a full-tie electrode assembly, including the following steps: S1. Calibrate the standard position of the wound electrode tabs: Based on the product process parameters, design and determine the standard electrode tab position values ​​for the innermost and outermost rings of the full electrode tab assembly. 标 ; S2. Acquire the actual position of the wound electrode tabs: Detect the completed full-bend electrode group and obtain the actual position value of the innermost electrode tab as P. 内实 The actual position value of the outermost electrode tab is P. 外实 ; It should be noted that: the fully wound tab assembly is selected as the test sample and placed on a dedicated positioning platform of a high-precision end-face vision inspection system (inspection accuracy not less than ±0.001mm). The inspection angle, focal length, and light source brightness are adjusted to ensure clear imaging of the tab end face, without reflection or obstruction. The inspection system automatically identifies the tab edge contour and accurately acquires the actual position of the innermost tab of the sample (denoted as P). 内实 ) and the actual position of the outermost electrode (denoted as P) 外实 To avoid errors from a single detection, the detection is repeated three times, and the average of the three detection data is taken as the final actual position data, which is then uploaded to the winding control system for subsequent deviation calculation.

[0009] S3. Calculate the positional deviation of a single-ring pole lug: First, obtain the total number of pole group layers N, then calculate the total deviation Δ of the outer rings respectively. 外 Total deviation of inner circle Δ 内 Finally, the position deviation value ΔP of a single-turn electrode tab is calculated based on the total number of electrode layers. It should be noted that: Δ 外 When Δ is positive, it indicates that the outer ring tab is offset outwards relative to the standard position. 外 When the value is negative, it indicates that the outer ring tab is offset inwards relative to the standard position, and the absolute value is the actual deviation of the outer ring tab; Δ 内 When Δ is positive, it indicates that the inner loop tab is offset outwards relative to the standard position. 内 When the value is negative, it indicates that the inner tab is offset inwards from the standard position, and the absolute value is the actual deviation of the inner tab.

[0010] S4. Winding parameter calibration and correction: The single-turn electrode position calibration deviation value ΔP is transmitted to the winding control system. During the winding process, the winding parameters of each layer are adjusted according to the compensation amount of the corresponding layer to perform linear compensation calibration of the electrode feeding position layer by layer, and the winding needle angular velocity and correction execution amount are corrected simultaneously. S5. Closed-loop verification, re-rolling and retesting until the qualified threshold is reached.

[0011] Furthermore, in step S1, P 标 To determine the reference position of the electrode tab based on the product design drawings and process requirements, the radial coordinate along the end face of the electrode assembly is set with the center of the winding needle as the reference, ensuring precise correspondence with the electrode tab design reference line.

[0012] Furthermore, in step S3, the total number of electrode layers N is one of the positive electrode layer, the negative electrode layer, or the separator layer, with the total tab lead-out layer as the counting reference.

[0013] Furthermore, the total deviation Δ of the outer ring 外 =P 外实 -P 标 The total deviation Δ of the inner ring 内 =P 内实 -P 标 The single-turn electrode position deviation value ΔP=(Δ 外 -Δ 内 )÷N=[(P 外实 -P 标 )-(P 内实 -P 标 )]÷N.

[0014] Furthermore, in step S4, the winding parameters of each layer are adjusted according to the compensation amount of the kth layer = k × ΔP to adjust the feeding position of the kth layer electrode, where k is an integer greater than 1.

[0015] Furthermore, the determination of the k-th electrode feeding position is as follows: when winding the k-th layer, the electrode feeding position = the original set feeding position + k × ΔP, where the original set feeding position is the position relative to P. 标 The corresponding process reference feed position.

[0016] Furthermore, the specific steps of step S5 are as follows: rewind the sample according to the calibrated winding parameters to obtain a new full-tab electrode group; repeat step S2 to re-measure the positions of the innermost and outermost tabs of the new electrode group; repeat the test 3 times and take the average value; if the tab position deviation after re-measurement reaches the qualified threshold and meets the product process requirements, the calibration is completed, and subsequent batch winding is carried out according to the parameters; if the deviation exceeds the qualified threshold, return to step S2 to re-collect the actual position data, and iteratively execute steps S3 to S5 until the tab position deviation reaches the qualified standard.

[0017] Furthermore, the qualified threshold in step S5 is that the electrode position deviation is ≤ ±0.05mm.

[0018] This application also provides a full-tie pole group inner and outer ring winding pole position calibration system, characterized in that it includes: a detection unit, a calculation unit, a control unit, and an execution unit, wherein: Detection unit: Using a CCD linear array camera or laser displacement sensor, installed on the electrode group detection station, it scans radially along the end face of the electrode group to collect the actual positions of the innermost and outermost electrode tabs of the full electrode group, and connects to the calculation unit to transmit the measured position data to the calculation unit. Calculation unit: An industrial control computer with a data processing module is used. It is connected to the detection unit and the control unit by signals. It receives the measured data from the detection unit, calculates the single-turn tab position deviation value, and transmits the calculation result to the control unit. Control unit: It is a winding control system, which is connected to the calculation unit and the execution unit by signal. It receives the single-turn tab position deviation value, generates the compensation amount of each layer winding parameter, performs layer-by-layer linear compensation calibration command and sends it to the execution unit. The execution unit includes an electrode feeding mechanism, a winding needle driving mechanism, and a correction mechanism. It is connected to the control unit and adjusts the electrode feeding position, winding needle angular velocity, and correction mechanism displacement according to the calibration instructions issued by the control unit, thereby achieving layer-by-layer correction of winding parameters.

[0019] Compared with the prior art, the beneficial effects of the present invention are: This application, based on the measured deviations of the inner and outer rings of the actual wound electrode assembly, achieves full-layer electrode tab position calibration through a simple linear allocation algorithm. Specifically, using the single-ring calibration deviation value ΔP, the winding parameters of each layer are linearly corrected layer by layer according to the compensation amount of the k-th layer = k × ΔP, achieving full-layer deviation compensation and fundamentally eliminating the problems of inner ring misalignment, outer ring drift, and inter-layer deviation accumulation during the winding process. It has the following advantages: 1) The calibration basis is in line with actual production and eliminates the influence of dynamic deviation: The actual measured position data of the electrode group after winding is directly used as the calibration basis, abandoning the calculation of purely theoretical physical models. It can effectively compensate for dynamic deviations in actual production such as electrode thickness tolerance, diaphragm tension fluctuation, and winding radial expansion, and solve the problem of the disconnect between theory and practice in the existing model method.

[0020] 2) Achieve full-level linear compensation and completely eliminate deviation accumulation: By evenly distributing the difference between the inner and outer ring deviations to each winding layer, full-process linear calibration from the inner ring to the outer ring is achieved. This solves the problem that the existing real-time correction method only corrects the current layer and the single-point detection method ignores the difference between the inner and outer rings, so that the tab position of each layer can be accurately aligned.

[0021] 3) High calibration accuracy, reliable method, and strong versatility: The calibration accuracy of the tab position of this method is ≤ ±0.05mm. At the same time, the algorithm is extremely simple and reliable, easy to integrate, and has a fast response. It can be adapted to the production of multiple types of cells, such as supporting square and cylindrical full-tab cells, and adapting to pole groups with different layers and different tab position standards, to meet different production conditions such as mass production and small-batch model changeover. Attached Figure Description

[0022] Figure 1 The standard electrode position P for the full electrode group in this application. 标 Schematic diagram; Figure 2 This is a schematic diagram showing the inner and outer rings of the electrode positions of the total electrode group in this application. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solution of the present invention, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings and preferred embodiments.

[0024] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0025] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," "fixed connection," and "fixed connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Several improvements and modifications can be made without departing from the principle of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention.

[0026] Example 1 This embodiment is for a square full-tab lithium battery electrode assembly with a total number of N=40 layers (20 layers each for positive and negative electrode sheets, alternately wound in a counterclockwise direction). Equipment: Dedicated winding machine for all tabs, CCD vision inspection system (inspection accuracy ±0.001mm, adapted for inspection of the end face of all tab pole groups), laser cutting and winding control system (supports layer-by-layer parameter compensation, and can adjust the electrode feeding position in real time).

[0027] The specific steps are as follows: S1. Calibrate the standard position of the wound tab Through the parameter input interface of the all-tie winding machine control system, accurately input the standard tab position parameters specified in the product process, and clearly mark: the position of the innermost standard tab and the position of the outermost standard tab P. 标 =14.80mm, such as Figure 1 As shown. The system automatically saves this baseline parameter as the sole reference standard for subsequent deviation calculations and parameter compensation.

[0028] S2. Collect the actual position of the wound tab. The first wound square electrode assembly is removed from the winding machine and placed stably on the dedicated inspection platform of the CCD inspection system (a positioning fixture suitable for square electrode assemblies is used to prevent electrode assembly displacement from affecting inspection accuracy). The inspection angle, focal length, and light source brightness are adjusted to ensure clear imaging of the electrode tab end face without reflection or obstruction. The system automatically identifies the edge contour of the electrode tab and accurately acquires the actual positions of the innermost and outermost electrode tabs. The specific acquisition results are as follows: Inner ring tab actual position P 内实 =15.08mm; The actual position of the outermost electrode P 外实 =14.62mm; After data collection, the system automatically records the raw detection data. To ensure the accuracy of the data and avoid errors from a single detection, the detection is repeated three times, and the average of the three detection data is taken as the final actual position (the three detection data are: P...). 内实1 =15.07mm, P 内实2 =15.08mm, P 内实3 =15.09mm, average value P 内实 =15.08mm; P 外实1 =14.61mm, P 外实2 =14.62mm, P 外实3 =14.63mm, average value P 外实 =14.62mm), the detection data is synchronously uploaded to the control system for subsequent deviation calculation.

[0029] S3. Calculate the position deviation of a single-turn electrode. Given that the total number of layers in the square all-electrode assembly is N=40, and combining this with the standard position P entered in step S1... 标 =14.80mm and the final actual position data (P) collected in step S2 内实 =15.08mm, P 外实 =14.62mm), calculate the total outer ring deviation, total inner ring deviation, and single ring calibration deviation step by step according to the formula, such as Figure 2 As shown, the specific calculation process is as follows: 1. Total deviation of outer ring: Δ 外 =P 外实 -P标 =14.62mm-14.80mm=-0.18mm (The negative value indicates that the outer ring lug is offset inwards from the standard position, with a deviation of 0.18mm). 2. Total deviation of inner ring: Δ 内 =P 内实 -P 标 =15.08mm-14.80mm=+0.28mm (A positive value indicates that the inner ring lug is off-center relative to the standard position, with a deviation of 0.28mm). 3. Single-turn calibration deviation: ΔP = (Δ 外 -Δ 内 )÷N=(-0.18mm-0.28mm)÷40=(-0.46mm)÷40=-0.0115mm / layer (a negative value indicates that the position of each electrode layer needs to be adjusted inward relative to the original position, and the adjustment amount is 0.0115mm / layer). After the calculation is completed, the single-turn calibration deviation ΔP = -0.0115mm / layer is accurately entered into the winding control system. The system automatically generates a layer-by-layer compensation scheme based on this deviation value, specifying the adjustment amount for the electrode feed position of each layer, and synchronously linking the adjustment parameters of the winding needle angular velocity and the correction execution amount to ensure that the compensation scheme can be directly executed. S4. Winding Parameter Calibration and Correction The calculated single-turn electrode position calibration deviation value ΔP = -0.0115 mm / layer is transmitted to the winding machine control system. The system automatically generates winding parameters for each layer based on this deviation value. That is, the compensation amount for the k-th layer = k × ΔP. The electrode feed position of the k-th layer is adjusted for compensation. Taking the 20th layer as an example, the compensation amount is calculated as follows: Compensation amount = 20 × (-0.0115 mm / layer) = -0.13 mm. According to the compensation rule (adjusting the electrode feed position): the electrode feed position of the k-th layer = original feed position + k × ΔP (k is the number of winding layers, an integer ranging from 1 to 40; the original feed position is the reference feed position specified by the process, i.e., the same as P). 标 =14.80mm corresponds to the feed position, ensuring that the original position and the standard tab position are accurately matched. Therefore, the feed position of the 20th layer electrode is calculated as: Original feed position - 0.13mm = 14.80mm - 0.13mm = 14.67mm. This compensation brings the 20th layer tab position closer to the standard position, offsetting the accumulated deviation. Simultaneously, the associated winding needle angular velocity and correction execution parameters are corrected to ensure the compensation scheme can be directly executed.

[0030] S5. Closed-loop verification, re-testing until qualified. According to the parameters calibrated by S4, the first square electrode assembly was rewound (re-wound sample preparation). The rewinding process strictly followed the compensation method of adjusting the electrode feeding position layer by layer after calibration and the synchronous correction parameters. After rewinding, the electrode assembly was placed on the end face vision inspection system again, and the electrode tab position was checked three times. The average value was taken as the final calibration result. The specific inspection and verification results are as follows: Average actual position of the innermost tab after rewinding: 14.81 mm; Average actual position of the outermost tab after rewinding: 14.79 mm; Average actual position of tabs in the middle layer (20th layer) after rewinding: 14.795 mm; Calculate the tab position deviation after rewinding: innermost ring deviation = 14.81mm - 14.80mm = +0.01mm, outermost ring deviation = 14.79mm - 14.80mm = -0.01mm, middle layer (20th layer) deviation = 14.795mm - 14.80mm = -0.005mm. The tab position deviation of all layers is within ±0.03mm, which meets the product process requirements (deviation ≤ ±0.05mm). Calibration is complete.

[0031] This application also provides a full-tie electrode assembly inner and outer ring winding tab position calibration system. It includes: a detection unit for acquiring the actual positions of the innermost and outermost ring tabs of the electrode assembly; a calculation unit for calculating the single-turn deviation value ΔP; a control unit for receiving ΔP and outputting winding compensation calibration commands to the winding actuator; and an execution unit for adjusting the electrode feed position according to the winding compensation amount, and simultaneously correcting the winding needle angular velocity and the correction execution amount, so that the electrode feed speed and winding speed are precisely matched, avoiding electrode wrinkling or offset during the compensation process, and ensuring that the tabs are always aligned with the reference position.

[0032] In summary, this application is based on the fact that the tab deviation during the winding process of a full-tab electrode assembly exhibits a significant linear cumulative characteristic, meaning that the tab deviation changes linearly with the number of winding layers from the inner to the outer ring. Based on this characteristic, this application abandons the drawbacks of existing technologies that rely on theoretical models, directly using actual measured data of the inner and outer ring tab positions after winding for calculation. By subtracting the total deviation between the inner and outer rings, it effectively eliminates fixed deviations such as mechanical transmission clearance of the winding machine and fixed errors in the detection system, retaining only the linear trend portion of the tab deviation. This linear trend deviation is then evenly distributed to each layer of electrode sheets. By adjusting the electrode sheet feeding position, precise linear compensation is achieved throughout the entire process from the inner to the outer ring, ensuring that the tab position of each layer is accurately aligned with the reference position, thus completely solving the problems of inner ring misalignment, outer ring drift, and inter-layer deviation accumulation.

[0033] It should be noted that the acceptance threshold in this application can be adjusted to ±0.08mm or ±0.10mm depending on the process requirements of different battery cell products, to adapt to the production of omni-tab battery cells with medium to low precision requirements.

[0034] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A method for calibrating the position of the inner and outer windings of a full-electrode electrode assembly, characterized in that, Includes the following steps: S1. Calibrate the standard position of the wound electrode tabs: Based on the product process parameters, design and determine the standard electrode tab position values ​​for the innermost and outermost rings of the full electrode tab assembly. 标 ; S2. Acquire the actual position of the wound electrode tabs: Detect the completed full-bend electrode group and obtain the actual position value of the innermost electrode tab as P. 内实 The actual position value of the outermost electrode tab is P. 外实 ; S3. Calculate the position deviation of a single loop of the electrode: First, obtain the total number of layers N of the electrode group, then calculate the total deviation of the outer loop and the total deviation of the inner loop respectively, and finally, calculate the position deviation value ΔP of the single loop of the electrode based on the total number of layers of the electrode group. S4. Winding parameter calibration and correction: The single-turn electrode position calibration deviation value ΔP is transmitted to the winding control system. During the winding process, the winding parameters of each layer are adjusted according to the compensation amount of the corresponding layer to perform linear compensation calibration of the electrode feeding position layer by layer, and the winding needle angular velocity and correction execution amount are corrected simultaneously. S5. Closed-loop verification, re-rolling and retesting until the qualified threshold is reached.

2. The method for calibrating the position of the inner and outer rings of the full-electrode electrode assembly according to claim 1, characterized in that, In step S1, P 标 To determine the reference position of the electrode tab based on the product design drawings and process requirements, the radial coordinate along the end face of the electrode assembly is set with the center of the winding needle as the reference, ensuring precise correspondence with the electrode tab design reference line.

3. The method for calibrating the position of the inner and outer rings of the full-electrode electrode assembly according to claim 1, characterized in that, The total number of electrode layers N in step S3 is one of the number of positive electrode layers, negative electrode layers, or separator layers, with the total tab lead-out layer as the counting standard.

4. The method for calibrating the position of the inner and outer rings of the full-electrode electrode assembly according to claim 3, characterized in that, The total deviation of the outer ring Δ 外 =P 外实 -P 标 The total deviation Δ of the inner ring 内 =P 内实 -P 标 The single-turn electrode position deviation value ΔP=(Δ 外 -Δ 内 )÷N=[(P 外实 -P 标 )-(P 内实 -P 标 )]÷N.

5. The method for calibrating the position of the inner and outer rings of the full-electrode electrode assembly according to claim 1, characterized in that, In step S4, the winding parameters of each layer are adjusted according to the compensation amount of the kth layer = k × ΔP to adjust the feeding position of the kth layer electrode, where k is an integer greater than 1.

6. The method for calibrating the position of the inner and outer rings of the full-electrode electrode assembly according to claim 5, characterized in that, The determination of the feeding position of the k-th electrode is as follows: When winding the k-th layer, the electrode feeding position = the original set feeding position + k × ΔP, where the original set feeding position is the position relative to P. 标 The corresponding process reference feed position.

7. The method for calibrating the position of the inner and outer rings of the full-electrode electrode assembly according to claim 1, characterized in that, The specific steps of step S5 are as follows: rewind the sample according to the calibrated winding parameters to obtain a new full-tab electrode group; repeat step S2 to re-measure the positions of the innermost and outermost tabs of the new electrode group; repeat the test 3 times and take the average value; if the tab position deviation after re-measurement reaches the qualified threshold and meets the product process requirements, the calibration is completed, and subsequent batch winding is carried out according to the parameters; if the deviation exceeds the qualified threshold, return to step S2 to re-collect the actual position data, and iteratively execute steps S3 to S5 until the tab position deviation reaches the qualified standard.

8. The method for calibrating the position of the inner and outer rings of the full-electrode electrode assembly according to claim 7, characterized in that, In step S5, the acceptable threshold is that the electrode position deviation is ≤ ±0.05mm.

9. A system for calibrating the position of the inner and outer coils of a full-electrode electrode assembly, characterized in that, include: The unit comprises a detection unit, a calculation unit, a control unit, and an execution unit, wherein: Detection unit: A CCD line array camera or laser displacement sensor is installed on the electrode group detection station to scan and collect data radially along the end face of the electrode group. The acquisition accuracy is ≤ ±0.02mm. It is used to collect the actual positions of the innermost and outermost electrode tabs of the full electrode group and connects to the calculation unit to transmit the measured position data to the calculation unit. Calculation unit: An industrial control computer with a data processing module is used. It is connected to the detection unit and the control unit by signals. It receives the measured data from the detection unit, calculates the single-turn tab position deviation value, and transmits the calculation result to the control unit. Control unit: It is a winding control system, which is connected to the calculation unit and the execution unit by signal. It receives the single-turn tab position deviation value, generates the compensation amount of each layer winding parameter, performs layer-by-layer linear compensation calibration command and sends it to the execution unit. The execution unit includes an electrode feeding mechanism, a winding needle driving mechanism, and a correction mechanism. It is connected to the control unit by signal. According to the calibration command issued by the control unit, it adjusts the electrode feeding position and corrects the winding needle angular velocity and the displacement of the correction mechanism to achieve layer-by-layer compensation calibration of the winding parameters.

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