Error detection system and method, pole piece production device, computer equipment and medium

Abstract

The invention relates to an error detection system and method, a pole piece production device, computer equipment and a medium, and is used for detecting a pole piece of an energy storage device, and the system comprises a measurement module which is used for measuring the rotation amount of at least two supporting structures when the pole piece slides on a plurality of supporting structures at different positions; the control module is connected with the measurement module and is used for acquiring multiple pieces of size information of the pole piece according to the rotation amounts of different supporting structures relative to the pole piece measured by the measurement module, and judging that a size measurement error occurs in the measurement module under the condition that a comparison result among the multiple pieces of size information meets a preset error condition; the control module is further used for obtaining error comparison values according to the multiple pieces of size information of the pole pieces, obtaining a target error range according to the error comparison values of the multiple pole pieces, and judging that size measurement errors occur in the measurement module under the condition that the error comparison value corresponding to the target pole piece is out of the target error range. Whether errors occur in the size measurement process of the measurement module can be automatically diagnosed.

Description

Technical Field

[0001] The present application relates to the field of measurement technology, and in particular to an error detection system, method, pole piece production device, computer device and medium. Background Art

[0002] In the process of cutting large-sized sheets into sizes that meet actual requirements, it is necessary to verify the size of the cut sheets to ensure product quality. However, existing size detection systems usually use encoders to achieve the length measurement function. During the rotation of the encoder, there are easily situations such as slipping or non-synchronous movement with the sheet, resulting in deviations in the size measurement results and reducing the processing efficiency. Summary of the Invention

[0003] Based on this, in view of the problem that the encoder in the prior art is prone to slipping or non-synchronous movement with the sheet during rotation, resulting in deviations in the size measurement results and reducing the processing efficiency, it is necessary to provide an error detection system, method, pole piece production device, computer device and medium.

[0004] To achieve the above object, the present application provides an error detection system for detecting the pole piece of an energy storage device, including:

[0005] A measurement module for measuring the rotation amounts of at least two of the support structures when the support structures of the pole piece slide at multiple different positions;

[0006] A control module, connected to the measurement module, for obtaining multiple size information of the pole piece according to the rotation amounts of different support structures of the pole piece measured by the measurement module, and determining that the measurement module has a size measurement error when the comparison result between the multiple size information meets a preset error condition; the control module is further configured to obtain an error comparison value according to the multiple size information of the pole piece, obtain a target error range according to the error comparison values of multiple pole pieces, and determine that the measurement module has a size measurement error when the error comparison value corresponding to the target pole piece is outside the target error range.

[0007] In one embodiment, the measurement module includes a plurality of measurement units, and each measurement unit is configured to generate a corresponding number of pulse signals according to the rotation amount of a corresponding support structure measured;

[0008] Wherein, the control module obtains the size information according to the pulse signals.

[0009] In one embodiment, the plurality of measurement units includes:

[0010] A first measurement unit, connected to the control module, rotates as the corresponding measured support structure rotates to generate a corresponding number of first pulse signals;

[0011] A second measurement unit, connected to the control module, rotates as the corresponding measured support structure rotates to generate a corresponding number of second pulse signals;

[0012] Wherein, the control module respectively obtains first dimension information and second dimension information of the pole piece according to the first pulse signal and the second pulse signal.

[0013] In one embodiment, it further includes:

[0014] An image acquisition module, respectively connected to the first measurement unit, the second measurement unit, and the control module, is configured to acquire image information of the pole piece when receiving the first pulse signal and / or the second pulse signal;

[0015] Wherein, the control module is configured to obtain the dimension of the pole piece according to the image information, the first dimension information, and the second dimension information.

[0016] In one embodiment, the preset error condition includes: the gap between any two dimension information is greater than or equal to a preset value.

[0017] In one embodiment, the control module is further configured to output an alarm signal and control the error detection system to stop working when it determines that there is a dimension measurement error in the measurement module, and the alarm signal is used to indicate that there is a dimension measurement error in the current measurement module.

[0018] In one embodiment, an error detection method is provided, including:

[0019] Measuring the rotation amounts of at least two of the support structures when the support structures of the pole piece slide at multiple different positions;

[0020] Obtaining multiple dimension information of the pole piece according to the rotation amounts of different support structures relative to the pole piece, and determining that there is a dimension measurement error in the measurement module when the comparison result between the multiple dimension information meets the preset error condition;

[0021] Obtaining an error comparison value according to the multiple dimension information of the pole piece, obtaining a target error range according to the error comparison values of multiple pole pieces, and determining that there is a dimension measurement error in the measurement module when the error comparison value corresponding to the target pole piece is outside the target error range.

[0022] In one embodiment, a pole piece production device is provided, including:

[0023] The error detection system as described above;

[0024] A processing module, configured to cut the pole piece according to preset processing parameters when the pole piece moves to a cutting area.

[0025] In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory. When the computer program is executed by the processor, the processor executes the steps of the above method.

[0026] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the above method are implemented.

[0027] For the above error detection system, method, pole piece production device, computer device and medium, by measuring the rotation amounts generated by at least two support structures correspondingly when the support structures of the pole piece slide at multiple different positions, the control module obtains multiple dimension information of the pole piece according to the rotation amounts of different support structures relative to the pole piece, and uses the comparison result between the multiple dimension information as a criterion for reflecting the dimension measurement error of the measurement module. On the one hand, when the comparison result between the multiple dimension information meets the preset error condition, it is determined that the measurement module has a dimension measurement error, which not only realizes the automatic monitoring and diagnosis of whether there is an error in the dimension measurement process of the measurement module, ensures the accuracy of dimension measurement in the production process, so as to correct the error in time to improve the product quality, improve the reliability and automation degree of the system, but also avoids damaging the pole piece by manually measuring the length of the pole piece to detect whether the measurement module has a dimension measurement error, effectively reducing the manufacturing cost. On the other hand, by dynamically adjusting the target error range according to the distribution of the current data, rather than relying on a fixed threshold, the abnormality of the dimension information can be captured more accurately, so as to effectively avoid the data noise caused by material fluctuations, thereby improving the stability and accuracy of the error detection system. Description of the Drawings

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings.

[0029] Figure 1 It is one of the structural schematic diagrams of the error detection system provided in an embodiment;

[0030] Figure 2 It is the second structural schematic diagram of the error detection system provided in an embodiment;

[0031] Figure 3 It is the third structural schematic diagram of the error detection system provided in an embodiment;

[0032] Figure 4 It is the process schematic diagram of the error detection method provided in an embodiment.

[0033] Explanation of reference numerals:

[0034] Measurement module: 100; First measurement unit: 111; Second measurement unit: 112; Electrode tab: 200; Control module: 300; Image acquisition module: 400; Support structure: 500; Processing module: 600. Detailed implementation manners

[0035] To facilitate the understanding of the present application, the present application will be described more comprehensively below with reference to the relevant drawings. Embodiments of the present application are shown in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present application more thorough and comprehensive.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this application belongs. The terms used in the description of this application herein are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0037] As used herein, the singular forms "a", "an" and "the" may also include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms "comprises / include" or "has" etc. specify the presence of the stated features, wholes, steps, operations, components, parts or combinations thereof, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof. At the same time, in this specification, the term "and / or" includes any and all combinations of the related listed items.

[0038] In one embodiment, please refer to Figure 1 , a kind of error detection system is provided, which is used to detect the electrode tab of an energy storage device and includes: a measurement module 100 and a control module 300.

[0039] The measurement module 100 is used to measure the rotation amounts of at least two support structures 500 when the support structures 500 of the pole piece 200 slide at multiple different positions. The control module 300 is connected to the measurement module 100 and is used to obtain multiple dimensional information of the pole piece 200 according to the rotation amounts of different support structures 500 relative to the pole piece 200 measured by the measurement module 100, and determine that the measurement module 100 has a dimensional measurement error when the comparison result between the multiple dimensional information meets the preset error condition. The control module 300 is further used to obtain an error comparison value according to the multiple dimensional information of the pole piece 200, obtain a target error range according to the error comparison values of multiple pole pieces, and determine that the measurement module 100 has a dimensional measurement error when the error comparison value corresponding to the target pole piece is outside the target error range.

[0040] Among them, the pole piece 200 is the battery pole piece of the energy storage device. The battery pole piece is an important part of the lithium battery, mainly including the positive pole piece (positive electrode material) and the negative pole piece (negative electrode material). The two are the two electrodes in the battery, and they are isolated from each other through the electrolyte and the separator. The lithium battery is based on the movement of lithium ions between the positive and negative pole pieces in the electrolyte inside the battery to realize the charge and discharge process of the battery. This electrochemical reaction is the basis for the lithium battery to be reused. The lithium battery has the advantages of high energy density, long life and light weight, so it is widely used in fields such as mobile devices, electric vehicles, and energy storage systems.

[0041] Furthermore, in the lithium battery manufacturing process, laser die-cutting is a commonly used process, mainly used to cut the long strip-shaped battery pole piece into a specified size. This step is very crucial for ensuring the dimensional consistency, quality and performance of the battery. Among them, laser die-cutting is a processing method that uses laser technology for precise cutting. In laser die-cutting, the laser beam is used to cut the pole piece 200 along a predetermined contour or path. Therefore, in the pole piece cutting process in the lithium battery production process, the laser die-cutting technology can provide a high-precision, high-speed and non-contact cutting solution. The accuracy of the size of the cut pole piece 200 has a direct impact on the performance and cycle life of the battery. Therefore, in the manufacturing process, it is usually necessary to perform dimensional inspection on the laser-cut pole piece for quality control.

[0042] In the related art, a dimension detection system is usually used to perform an online full inspection of the dimension parameters of the cut pole piece 200. The dimension detection system in the related art usually associates the image information captured by the linear array CCD (Charge-Coupled Device) with the position information provided by the encoder to obtain the dimension data of the pole piece 200. However, on the one hand, the encoder usually determines the position by measuring the rotation of the rotating shaft. If there is asynchronous movement between the encoder and the rotating shaft, such as encoder slippage, in the case of asynchronous movement, even if the encoder sends the same number of pulses, the actual forward length of the pole piece 200 is no longer proportional to the number of pulses. This is because the relative movement between the pole piece 200 and the encoder may cause the actual rotation of the shaft to be inconsistent with the rotation measured by the encoder. Since the existing dimension measurement system relies on the pulse signal of the encoder to calculate the length of the pole piece 200, if the pulse does not match the actual length, the dimension measurement will be wrong. In other words, the asynchronous movement of the encoder will destroy the dimension matching relationship between the encoder and the pole piece, resulting in errors in dimension measurement.

[0043] On the other hand, the related technology usually uses a periodic calibration method to determine the measurement accuracy of the size detection system, wherein the periodic calibration can be understood as using some manual measurement methods (such as a tape measure) to actually measure the length of the pole piece at the beginning of each production shift, and comparing the measured value with the measurement result of the size detection system, so as to determine whether the size detection system has a measurement error and correct the error, but the above-mentioned manual measurement operation is easy to cause wear and tear on the product, that is, such destructive testing is not only inefficient, but also causes great cost waste to the product. Based on this, this embodiment provides an error detection system, which automatically determines the measurement accuracy of the size measurement system while avoiding the use of manual measurement of the actual pole piece length to determine whether the size detection system has a measurement error, thereby improving the automation of error diagnosis and reducing the manufacturing cost of the product.

[0044] Among them, the transportation of the pole piece 200 in the laser die-cutting process usually involves the cooperative transmission of the support structure 500. The support structure 500 in this embodiment can be understood as a roller-shaped structure such as a driving roller or a guiding roller (i.e., the rotating shaft mentioned above). The number of them is multiple. Multiple support structures 500 can be respectively arranged at different positions below or above the pole piece 200 to press against the pole piece 200, and power is provided by a motor or other power devices to drive and guide the movement of the pole piece 200, so that the pole piece 200 moves along a predetermined direction. The predetermined direction here can be understood as the tape-running direction of the pole piece 200. The tape-running direction of the pole piece 200 is usually along the process direction of the production line. This direction can be set according to the needs of the production process to ensure that the pole piece 200 flows in the correct order and direction during the manufacturing process. It should be noted that the design of the tape-running direction of the pole piece can be in the forms of straight line, curve, rising, falling, etc. to meet the process requirements of the pole piece 200 on the production line.

[0045] Further, the measurement module 100 can be understood to include multiple encoders. The multiple encoders are respectively arranged on different support structures 500. Then, a motor or other drive system is used to drive the shaft of the support structure 500 to rotate around its own axis. This rotational movement will drive the pole piece 200 to move along the tape-running direction. At the same time, the axis of the encoder rotates synchronously with the axis of the support structure 500. As the support structure 500 rotates, the pole piece 200 moves. The encoder rotates synchronously with the support structure 500. The encoder outputs a pulse signal every time it rotates a certain angle. That is, the number of pulses generated by the encoder is proportional to the rotation angle of the support structure 500. Among them, every time the encoder generates a pulse signal, it triggers the line array camera to scan and photograph the pole piece 200. The photographing frequency of the line array camera is associated with the moving speed of the pole piece 200.

[0046] Further, image processing software can be used to analyze the images taken by the line array camera to identify the edges or features of the pole piece 200. By applying techniques such as edge detection algorithms, color analysis, or pattern matching, the contour and dimension information of the pole piece 200 can be accurately extracted. Then, the control module 300 determines the starting and ending positions of the pole piece 200 according to the analysis results of the images, and according to the number of pulses output by the encoder during the measurement of the pole piece 200, combined with the resolution of the encoder, the actual length of the pole piece 200 can be calculated. The resolution refers to the proportional relationship between the number of pulses generated by the encoder and the actual movement, that is, the length of the pole piece 200 advanced corresponding to a single pulse is fixed. Thus, the control module 300 can obtain the length dimension of the pole piece 200 by combining the displacement or position information of the pole piece 200 recorded by the encoder and the images provided by the line array camera, and then compare the obtained length dimension with the specified dimension preset in the process to complete the dimension detection of the pole piece 200.

[0047] Based on this, the measuring module 100 can rotate synchronously with the support structures 500 at different positions. When the pole piece 200 passes through each support structure 500 in sequence, the measuring module 100 can measure the rotation amount of at least two of the support structures 500, which can be understood as the angular displacement of the support structure 500. Then, the measuring module 100 generates a corresponding number of pulse signals from the rotation amount of at least two support structures 500, and the rotation amount of each support structure 500 actually corresponds to the same forward length of the same pole piece 200. Further, the control module 300 obtains the size information of the support structures 500 at different position areas of the pole piece 200 according to the pulse signals corresponding to the rotation amounts of different support structures 500 measured by the measuring module 100, and the size information can be understood as the length data of the pole piece 200 along the running direction.

[0048] Among them, the control module 300 compares the multiple size information generated by the measuring module 100 at the support structure 500 at different positions, for example, by comparing the difference between the multiple size information. For example, assuming that there are three support structures marked as A, B and C, the measuring module 100 will measure the rotation amount of the pole piece 200 through A, B and C respectively, and the control module 300 obtains the size information measured by the measuring module 100 for the pole piece 200 at positions A, B and C according to the rotation amount generated by A, B and C respectively, thereby generating three difference results, where difference 1 is the size at A. The difference 2 is the difference between the size information at A and the size information at C, the difference 3 is the difference between the size information at B and the size information at C, and the control module 300 further compares the three differences with the preset error conditions. The preset error conditions here can be preset values ​​pre-set by the system, which are used to determine whether the differences are within an acceptable range. If any difference exceeds the preset value, the control module 300 will determine that the measurement module 100 has a size measurement error, that is, the measurement module 100 has problems such as slipping that cause it to move asynchronously with the support structure 500. It can be understood that since the probability of abnormalities occurring simultaneously when the measuring module 100 measures at different positions of the support structure 500 and the same deviation amount caused by the abnormalities is extremely small, the comparison results between multiple dimensional information measured by the measuring module 100 at at least two different positions of the support structure 500 can be used as a criterion for reflecting the dimensional measurement error of the measuring module 100, thereby avoiding damage to the pole piece 200 caused by manually measuring the length of the pole piece 200 to detect whether the measuring module 100 has a dimensional measurement error. This not only realizes real-time monitoring of the measuring module 100 and automatic diagnosis of whether a dimensional measurement error occurs, thereby improving the reliability and automation of the system, but also avoids cost waste caused by damage to the pole piece 200.

[0049] Furthermore, the measuring module 100 can correspondingly measure multiple dimension information for the pole piece 200, and the control module 300 can obtain an error comparison value according to the comparison result between the multiple dimension information. Exemplarily, when the measuring module 100 correspondingly measures two dimension information for the pole piece 200, the control module 300 can calculate the absolute value of the difference between the two dimension information to obtain the error comparison value. It can be understood that during the processing, there may be situations such as uneven thickness among multiple pole pieces, and the slight difference in thickness will also cause asynchronous movement between the measuring module 100 and the support structure 500, resulting in dimension measurement errors of the measuring module 100. Therefore, in order to avoid data noise caused by fluctuations in the thickness of the pole piece, the target error range can be determined according to the error comparison values generated by multiple pole pieces. The target error range can be based on the 3σ principle, where the average value μ of the error comparison values of n pole pieces is taken n and the standard deviation σ is calculated. If the error comparison value Y of the next pole piece n+1 exceeds the range of three times the standard deviation, for example, referring to formula (1), it is considered that there is abnormal data and an alarm is triggered. It should be noted that Y n+1 is the error comparison value of the dimension information measured by the measuring module for the (n + 1)-th pole piece. For example, Y n+1 can be the difference between two dimension information ┃Xn+1 （1） - Xn+1 （2） ┃.

[0050] μ n - 3*σ < Y n+1 < μ n + 3*σ --- (1)

[0051] Based on this, by dynamically adjusting the target error range according to the distribution of the current data, rather than relying on a fixed threshold, the abnormality of the data can be captured more accurately, effectively avoiding data noise caused by material fluctuations, better adapting to the changing working environment and data characteristics, thereby improving the stability and accuracy of the error detection system.

[0052] In the above error detection system, when measuring the rotation amounts respectively generated by at least two support structures 500 when the support structures 500 of the pole piece 200 slide at multiple different positions, the control module 300 obtains multiple dimensional information of the pole piece 200 according to the rotation amounts of different support structures 500 relative to the pole piece 200 measured by the measurement module 100, and uses the comparison result between the multiple dimensional information as a criterion for reflecting the dimensional measurement error of the measurement module 100. On the one hand, when the comparison result between the multiple dimensional information meets the preset error condition, it is determined that the measurement module 100 has a dimensional measurement error. This not only realizes the automatic monitoring and diagnosis of whether there is an error in the dimensional measurement process of the measurement module 100, ensures the dimensional measurement accuracy in the production process, so that the error can be corrected in time to improve the product quality, improve the reliability and automation degree of the system, but also avoids the damage to the pole piece 200 caused by manually measuring the length of the pole piece 200 to detect whether the measurement module 100 has a dimensional measurement error, effectively reducing the manufacturing cost. On the other hand, by dynamically adjusting the target error range according to the distribution of the current data, rather than relying on a fixed threshold, the abnormality of the dimensional information can be captured more accurately to effectively avoid the data noise caused by material fluctuations, thereby improving the stability and accuracy of the error detection system.

[0053] In one embodiment, the measurement module includes a plurality of measurement units.

[0054] Each measurement unit is configured to generate a corresponding number of pulse signals according to the rotation amount of a support structure measured correspondingly, wherein the control module obtains the dimensional information according to the pulse signals.

[0055] Wherein, each measurement unit is disposed on a support structure and is responsible for measuring the rotation amount of the support structure. Each measurement unit may include an encoder. As a kind of sensor, an encoder is a device used to measure the position, speed, direction or angle of an object, which converts the movement of the object into an electrical signal, usually a pulse signal, so that the system can accurately track, monitor or control the movement state of the object. Therefore, the measurement unit is connected to the support structure. When multiple support structures rotate synchronously to drive the pole piece to move along the tape running direction, the measurement units corresponding to each support structure will also rotate synchronously, thereby generating a corresponding number of pulse signals according to the rotation amount of the support structure. The control module is connected to each measurement unit, responsible for collecting and processing the pulse signals from each measurement unit, and obtaining the dimensional information of the pole piece measured by each measurement unit according to these pulse signals, so as to compare the multiple dimensional information generated by each measurement unit at different support structures. When the comparison result between the multiple dimensional information meets the preset error condition, it is determined that the measurement module has a dimensional measurement error.

[0056] Thus, the rotation amounts of different support structures are measured by multiple measurement units. Each measurement unit generates a corresponding number of pulse signals based on the rotation amount to transmit the rotation information to the control module. On the one hand, the control module can obtain the measured size of the pole piece based on the pulse signals. On the other hand, the control module uses multiple size information measured at the support structures at different positions as a criterion for reflecting the size measurement error of the measurement module, and can monitor whether there are size differences when the multiple measurement units measure different support structures respectively, so as to determine whether the measurement module has a size measurement error.

[0057] In one embodiment, with reference to Figure 2 and Figure 3 , the multiple measurement units include: a first measurement unit 111 and a second measurement unit 112.

[0058] The first measurement unit 111 is connected to the control module 300. The first measurement unit 111 rotates as the corresponding measured support structure 500 rotates to generate a corresponding number of first pulse signals. The second measurement unit 112 is connected to the control module 300. The second measurement unit 112 rotates as the corresponding measured support structure 500 rotates to generate a corresponding number of second pulse signals. Among them, the control module 300 obtains the first size information and the second size information of the pole piece 200 according to the first pulse signal and the second pulse signal respectively.

[0059] Among them, the first measurement unit 111 and the second measurement unit 112 are respectively arranged on the support structures 500 at different positions and may respectively include a first encoder and a second encoder. The first measurement unit 111 and the second measurement unit 112 are independent of each other, independently rotate synchronously as the pole piece 200 advances, and respectively send the corresponding first pulse signal and second pulse signal to the control module 300. These two groups of signals are independent of each other, but the advancing length of the pole piece 200 corresponding to each pulse is the same. The control module 300 obtains and compares the first pulse signal and the second pulse signal. Among them, the two groups of pulse signals are respectively converted into the first size information X1 and the second size information X2, and arithmetic operations of subtraction or division can be performed on the first size information X1 and the second size information X2. For example, in the case of subtraction, if │X1 - X2│ is less than the first preset value, it means that the measurement module has no size measurement error, that is, the measurement module is normal. If │X1 - X2│ is greater than or equal to the first preset value, it means that the measurement module has a size measurement error, that is, the measurement module is abnormal.

[0060] Therefore, in the first aspect, two independent measurement units can reduce the setup of measurement units while providing redundancy for the measurement system to reduce manufacturing costs. Even if one measurement unit fails or has an error, the other measurement unit can still provide accurate measurement data. This redundancy helps reduce the impact of system failures on measurement accuracy and improve the reliability of the system. In the second aspect, by using two measurement units simultaneously, the control module 300 can detect the measurement difference between the two measurement units in real time. If there is a difference in the size information represented by the pulse signals generated when the two measurement units measure the electrode tab 200, the control module 300 can identify this difference and issue a warning or perform correction, realizing real-time monitoring of the measurement module and automatic diagnosis of whether there is a size measurement error, which further helps to timely detect potential measurement errors and improve the accuracy of the measurement system. In the third aspect, using two independent measurement units can improve the resolution and precision of the measurement system. By simultaneously reading the pulse signals of the two measurement units, the control module 300 can measure movement or rotation more precisely, thus improving the detection accuracy of the size of the electrode tab 200.

[0061] In one embodiment, with continued reference to Figure 2 , the error detection system further includes: an image acquisition module 400.

[0062] The image acquisition module 400 is respectively connected to the first measurement unit 111, the second measurement unit 112, and the control module 300, and is configured to acquire the image information of the electrode tab 200 when receiving the first pulse signal and / or the second pulse signal. Among them, the control module 300 is configured to obtain the size of the electrode tab 200 according to the image information, the first size information, and the second size information.

[0063] Among them, the image acquisition module 400 may include a linear array CCD camera and a light source. The linear array CCD camera may be vertically arranged relative to the pole piece 200, so that the contour and surface features of the pole piece 200 can be more accurately captured at the camera position in the vertical direction, which helps to improve the accuracy and reliability of dimension measurement. Further, a plurality of support structures 500 are respectively arranged at different positions below or above the pole piece 200 to press against the pole piece 200. Based on the rotation of the plurality of support structures 500 around their own central axes, the pole piece 200 can be driven and guided to move along the tape running direction. The first measurement unit 111 and the second measurement unit 112 are respectively arranged on any two different support structures 500. When the support structure 500 rotates to drive the pole piece 200 to move, the first measurement unit 111 and the second measurement unit 112 rotate synchronously. For example, every time the first measurement unit 111 and the second measurement unit 112 rotate one circle, they will respectively send a first pulse signal and a second pulse signal to the linear array CCD camera of the image acquisition module 400. Based on any one pulse signal or in combination with two sets of pulse signals, the image acquisition module 400 captures an image of the pole piece 200 according to the uniform illumination provided by the light source. Thus, the time synchronization of the two measurement units and the image acquisition module 400 can associate the time of the pulse signal with the image captured by the image acquisition module 400. In this way, the measurement values of the measurement units corresponding to each image acquisition moment can be determined. Finally, the captured images can be processed, which may specifically include steps such as enhancement, filtering, and feature extraction, to identify the contour and key features of the pole piece 200. The control module 300 receives the pulse signal and the image information, associates them, and through time synchronization, determines the measurement values of the measurement units corresponding to each image acquisition moment, so as to obtain parameters such as the measured dimensions of the pole piece 200 and perform an appearance inspection on the pole piece 200 to monitor whether there are appearance defects that do not meet the production standards.

[0064] Among them, the control module 300 will also detect the measurement error of the measurement module according to the two sets of pulse signals sent by the two measurement units. If there is an unacceptable difference in the dimension information represented by the pulse signals generated when the two measurement units measure the pole piece 200, the control module 300 can identify this difference and issue a warning or perform correction, which not only realizes real-time monitoring and automatic diagnosis of whether there is a dimension measurement error in the measurement module, improves the reliability and automation degree of the system, but also avoids cost waste caused by damage to the pole piece 200.

[0065] In one embodiment, the preset error condition includes: the gap between any two dimension information is greater than or equal to a preset value.

[0066] Among the multiple dimension information measured by multiple measuring units in the measuring module for the pole piece, if the difference between any two dimension information (i.e., the absolute value of the difference between the two) is greater than or equal to a preset value, the control module will determine that there is a dimension measurement error in the measuring module. Thus, using the difference between multiple dimension information as the criterion for dimension measurement error can avoid damaging the pole piece by manually measuring the length of the pole piece to detect whether there is a dimension measurement error in the measuring module, and realize real-time monitoring and automatic diagnosis of whether there is a dimension measurement error in the measuring module, improving the reliability and automation level of the system.

[0067] In one embodiment, the control module is further configured to output an alarm signal and control the error detection system to stop working when it is determined that there is a dimension measurement error in the measuring module. The alarm signal is used to indicate that there is a dimension measurement error in the current measuring module. Among them, when it is determined that there is a dimension measurement error in the measuring module, an alarm signal can be generated to prompt that there is a measurement abnormality in the current measuring module, and the work of the error detection system is stopped to prevent continuous generation of incorrect measurement results and ensure that measures are taken in time when a dimension measurement error occurs.

[0068] In one embodiment, as Figure 4 shown, an error detection method is provided, including steps S102 to S106. The error detection method provided in this embodiment measures the rotation amounts generated by at least two support structures when the support structures of the pole piece slide at multiple different positions. The control module obtains multiple dimension information of the pole piece according to the rotation amounts of different support structures relative to the pole piece measured by the measuring module, and uses the comparison result between the multiple dimension information as the criterion for reflecting the dimension measurement error of the measuring module. On the one hand, when the comparison result between the multiple dimension information meets the preset error condition, it is determined that there is a dimension measurement error in the measuring module, which not only realizes automatic monitoring and diagnosis of whether there is an error in the dimension measurement process of the measuring module, ensures the accuracy of dimension measurement in the production process, so that errors can be corrected in time to improve the product quality, improve the reliability and automation level of the system, but also can avoid damaging the pole piece by manually measuring the length of the pole piece to detect whether there is a dimension measurement error in the measuring module, effectively reducing the manufacturing cost. On the other hand, by dynamically adjusting the target error range according to the distribution of the current data, rather than relying on a fixed threshold, it can more accurately capture the abnormality of the dimension information, so as to effectively avoid the data noise caused by material fluctuations, thereby improving the stability and accuracy of the error detection system.

[0069] Step S102: Measure the rotation amounts of at least two support structures when the support structures of the pole piece slide at multiple different positions.

[0070] Step S104: Obtain multiple size information of the pole piece according to the rotation amounts of different support structures of the measured relative pole piece, and determine that there is a size measurement error in the measurement module when the comparison result between the multiple size information meets a preset error condition.

[0071] Step S106: Obtain an error comparison value according to the multiple size information of the pole piece, obtain a target error range according to the error comparison values of multiple pole pieces, and determine that there is a size measurement error in the measurement module when the error comparison value corresponding to the target pole piece is outside the target error range.

[0072] For the error detection method provided in this embodiment, please refer to the relevant descriptions in the above embodiments and will not be elaborated here.

[0073] In one embodiment, as Figure 3 shown, a pole piece production device is provided, including: an error detection system and a processing module as provided in the above embodiment. The processing module is used to cut the pole piece according to preset processing parameters when the pole piece moves to the cutting area.

[0074] Among them, the processing module may include a laser die-cutting device, which irradiates the surface of the pole piece with a laser beam with high intensity and high energy, so that the pole piece is locally heated, evaporated or vaporized, and finally the precise cutting of the pole piece is realized. This cutting method does not involve physical contact, so it is suitable for applications with high-precision and surface quality requirements for materials, such as the production and manufacturing of electronic components, battery pole pieces, etc. The pole piece is driven to the cutting area by the synchronous rotation of multiple support structures, and the processing module then implements preset processing parameters to cut the pole piece, such as cutting depth, cutting speed, and cutting angle. During the processing, it is necessary to perform dimensional inspection on the pole piece after laser cutting for quality control. The error detection system measures the rotation amounts generated by at least two support structures correspondingly when the support structures of the pole piece slide at multiple different positions. The control module obtains multiple dimensional information of the pole piece based on the rotation amounts of different support structures relative to the pole piece measured by the measurement module, and uses the comparison result between the multiple dimensional information as the criterion for reflecting the dimensional measurement error of the measurement module. On the one hand, when the comparison result between the multiple dimensional information meets the preset error condition, it is determined that the measurement module has a dimensional measurement error, which not only realizes the automatic monitoring and diagnosis of whether there is an error in the dimensional measurement process of the measurement module, ensures the accuracy of dimensional measurement during the production process, so that the error can be corrected in time to improve the product quality, improve the reliability and automation degree of the system, but also avoids the damage of the pole piece caused by manually measuring the length of the pole piece to detect whether there is a dimensional measurement error in the measurement module, effectively reducing the manufacturing cost. And by dynamically adjusting the target error range according to the distribution of the current data, rather than relying on a fixed threshold, it can more accurately capture the abnormality of the dimensional information, so as to effectively avoid the data noise caused by material fluctuations, thereby improving the stability and accuracy of the error detection system.

[0075] It can be understood that since the pole piece production device uses the error detection system provided in the above embodiment, when the performance of the error detection system is higher than that of the traditional system, the working performance of the corresponding pole piece production device also improves.

[0076] In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory. When the computer program is executed by the processor, the processor executes the steps of the method described in the above embodiment.

[0077] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method described in the above embodiment are implemented.

[0078] In one embodiment, a computer program product containing instructions is further provided. When it runs on a computer, the computer executes the steps of the method described in the above embodiment.

[0079] Any reference to memory, storage, database, or other media used in this application may include non-volatile and / or volatile memory. Suitable non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM), which is used as an external cache. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM).

[0080] It should be understood that although the steps in the flowchart are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless specifically stated herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in the flowchart may include multiple steps or multiple stages, and these steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be executed alternately or alternately with at least some of the steps or stages in other steps or other steps.

[0081] In the description of this specification, the description with reference to terms such as "some embodiments", "other embodiments", "ideal embodiments", etc. means that the specific features, structures, materials, or features described in connection with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic description of the above terms does not necessarily refer to the same embodiment or example.

[0082] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features of the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0083] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. An error detection system, characterized in that, A pole piece for detecting an energy storage device, comprising: A measurement module for measuring the rotation amounts of at least two of the support structures when the support structures of the pole piece slide at multiple different positions; A control module connected to the measurement module, configured to obtain a plurality of size information of the pole piece according to the rotation amounts of different support structures relative to the pole piece measured by the measurement module, and determine that the measurement module has a size measurement error when the comparison result between the plurality of size information meets a preset error condition; the control module is further configured to obtain an error comparison value according to the plurality of size information of the pole piece, obtain a target error range according to the error comparison values of the plurality of pole pieces, and determine that the measurement module has a size measurement error when the error comparison value corresponding to the target pole piece is outside the target error range.

2. The error detection system according to claim 1, wherein The measurement module includes a plurality of measurement units, and each measurement unit is configured to generate a corresponding number of pulse signals according to the rotation amount of a corresponding measured support structure; Wherein, the control module obtains the size information according to the pulse signals.

3. The error detection system according to claim 2, characterized in that, The plurality of measurement units include: A first measurement unit connected to the control module, and the first measurement unit rotates as the corresponding measured support structure rotates to generate a corresponding number of first pulse signals; A second measurement unit connected to the control module, and the second measurement unit rotates as the corresponding measured support structure rotates to generate a corresponding number of second pulse signals; Wherein, the control module obtains the first size information and the second size information of the pole piece according to the first pulse signal and the second pulse signal respectively.

4. The error detection system according to claim 3, characterized in that, It further includes: An image acquisition module respectively connected to the first measurement unit, the second measurement unit, and the control module, configured to acquire image information of the pole piece when receiving the first pulse signal and / or the second pulse signal; Wherein, the control module is configured to obtain the size of the pole piece according to the image information, the first size information, and the second size information.

5. The error detection system according to any one of claims 1 to 4, characterized in that, The preset error condition includes: the difference between any two size information is greater than or equal to a preset value.

6. The error detection system according to any one of claims 1 to 4, characterized in that, The control module is further configured to output an alarm signal and control the error detection system to stop working when it determines that the measurement module has a size measurement error, and the alarm signal is used to indicate that the current measurement module has a size measurement error.

7. An error detection method, characterized in that, It includes: Measuring the rotation amounts of at least two of the support structures when the support structures of the pole piece slide at multiple different positions; Obtaining a plurality of size information of the pole piece according to the rotation amounts of different support structures relative to the pole piece measured, and determining that the measurement module has a size measurement error when the comparison result between the plurality of size information meets a preset error condition; Obtaining an error comparison value according to the plurality of size information of the pole piece, obtaining a target error range according to the error comparison values of the plurality of pole pieces, and determining that the measurement module has a size measurement error when the error comparison value corresponding to the target pole piece is outside the target error range.

8. A pole piece production device, characterized in that, It includes: The error detection system according to any one of claims 1 to 6; A processing module, configured to cut the pole piece according to preset processing parameters when the pole piece moves to a cutting area.

9. A computer device, characterized in that, Comprising a memory and a processor, wherein a computer program is stored in the memory, and when the computer program is executed by the processor, the processor is caused to execute the steps of the method according to claim 7.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, the steps of the method according to claim 7 are implemented.

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