Material area deviation rectification detection method, device and system

Abstract

The invention discloses a material area deviation rectification detection method, device and system, and the method comprises the steps: obtaining a surface image of a pole piece in response to a deviation rectification request; with the fact that the deviation value between the position of the center line of the material area and the position of the preset deviation rectification reference center line is smaller than the minimum value of the preset deviation rectification range, the preset deviation rectification step is executed repeatedly; the preset deviation rectifying step comprises the following steps: calculating a material area center line position in the width direction of the pole piece based on a surface image of the pole piece; calculating a deviation value based on the material area center line position and a preset deviation correction reference center line position; dividing a preset correction range into a plurality of range subintervals, wherein a common endpoint exists between adjacent range subintervals; on the basis of the deviation value, the multiple range subintervals and a preset deviation correction strategy, a deviation correction value is determined; and according to the deviation rectification value, a deviation rectification control signal is generated, so that deviation rectification equipment performs deviation rectification on the pole piece based on the deviation rectification control signal. According to the method, the deviation correction frequency can be reduced, and the achievable control precision is higher.

Description

Technical Field

[0001] The present invention belongs to the field of material deviation correction and detection, and particularly relates to a material area deviation correction and detection method, device and system. Background Art

[0002] During the battery manufacturing process, fluctuations in the slitting width can affect battery performance. First, it can reduce the cell capacity. When the material area width is too narrow during the manufacturing process, the positive electrode can actually release fewer lithium ions than designed, resulting in a lower actual capacity. Secondly, if the negative electrode slitting width is too small, it can lead to abnormal positive and negative electrode coating, causing lithium deposition or short circuit anomalies. Finally, abnormal fluctuations in the positive electrode width can lead to poor battery consistency. Therefore, in the actual battery cell manufacturing process, the control of the electrode correction system is particularly important.

[0003] In the actual production process, the deviation correction only relies on the photoelectric sensor to grasp the edge of the electrode, and then correct the electrode tape running mode. The photoelectric sensor grasps the edge through the reflection of light. In actual production, if AT9 and the material area are misdissolved, the color distinction of the misdissolved area is not obvious, which can easily cause misjudgment of the edge grasping and lead to deviation. Summary of the Invention

[0004] In response to the above problems, the present invention proposes a material area correction detection method, device and system, which can reduce the frequency of correction and achieve higher control accuracy.

[0005] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, the present invention provides a material area deviation correction detection method, comprising:

[0007] In response to a correction request, acquiring a surface image of the pole piece;

[0008] The preset correction steps are repeated with the goal that the deviation between the center line position of the material area and the preset correction reference center line position is less than the minimum value of the preset correction range;

[0009] The preset deviation correction steps include:

[0010] Based on the surface image of the pole piece, the centerline position of the material area in the width direction of the pole piece is calculated;

[0011] Calculating a deviation value based on the centerline position of the material area and the preset correction reference centerline position;

[0012] Divide the preset correction range into multiple range sub-intervals, and there is a common endpoint between adjacent range sub-intervals;

[0013] Determining a correction value based on the deviation value and the multiple range subintervals, and a preset correction strategy;

[0014] A correction control signal is generated according to the correction value, so that the correction device corrects the pole piece based on the correction control signal.

[0015] In the above scheme, by dividing the preset correction range into multiple range sub-intervals, the correction value is determined based on the deviation value between the center line position of the material area and the preset correction reference center line position, multiple range sub-intervals, and the preset correction strategy, so that the correction value gradually decreases until the material area is centered, which can reduce the frequency of correction and achieve higher control accuracy.

[0016] In combination with the first aspect, optionally, multiple range subintervals are arranged in sequence, and the maximum value of the previous range subinterval and the minimum value of the next range subinterval are the same value; the method for determining the correction value includes:

[0017] If the deviation value is less than the minimum value of the preset correction range, the correction value is 0;

[0018] If the deviation value is within the first range subinterval, the correction value is the deviation value;

[0019] If the deviation value is within a range subinterval other than the first range subinterval, the correction value is the minimum value of the range subinterval;

[0020] If the deviation value is greater than the maximum value of the preset correction range, the correction value is the maximum value of the preset correction range.

[0021] The above scheme provides specific steps for determining the deviation correction value. This approach can effectively reduce deviation correction frequency, enhance system sensitivity, and achieve higher control accuracy. Theoretically, the more sub-ranges (i.e., more decomposition segments) a range has, the smaller the deviation fluctuation range will be, resulting in higher deviation correction accuracy and fewer deviation corrections. During implementation, the number of sub-ranges can be determined based on actual needs.

[0022] In combination with the first aspect, optionally, the range subintervals include [a, b], (b, c], (c, d];

[0023] If the deviation value is less than a, the correction value is 0;

[0024] If a≤deviation value≤b, the correction value is the deviation value;

[0025] If b<deviation value≤c, the correction value is b;

[0026] If c<deviation value≤d, the correction value is c;

[0027] If d < deviation value, the correction value is d.

[0028] In the above scheme, the range sub-intervals are set to 3, and a method for determining the correction value when the deviation value is within each range sub-interval is given, which is conducive to implementation by technical personnel in this field, reduces implementation difficulty, and saves R&D time and cost.

[0029] In combination with the first aspect, optionally, a=0.1, b=0.2, c=0.4, d=0.8.

[0030] In the above scheme, specific values ​​of parameters a, b, c, and d are given. In theory, the electrode tape running range can be controlled within ±0.1mm.

[0031] In combination with the first aspect, optionally, when the number of surface images of the electrode obtained is greater than 1, the material area centerline position corresponding to each surface image is calculated respectively, and the average is calculated based on all material area centerline positions as the final material area centerline position.

[0032] In the above solution, by calculating the mean of the material area center line positions corresponding to all surface images, the accuracy of the material area center line positions can be effectively improved.

[0033] In combination with the first aspect, optionally, the surface image includes a front surface image and a back surface image.

[0034] In the above scheme, by calculating the mean of the center line positions of the material area corresponding to the front surface image and the back surface image, it is possible to avoid the coating grabbing the edge of the foil, resulting in the influence of the material width caused by the coating position deviation, and reduce the misalignment of the front and back surfaces.

[0035] In combination with the first aspect, optionally, the method for calculating the centerline position of the material area includes:

[0036] Calculate the material area width of the electrode through pixel points;

[0037] Based on the material zone width, the centerline position of the discharge zone is calculated.

[0038] In the above scheme, a specific calculation method for the centerline position of the material area is given, which is convenient for those skilled in the art to directly apply the calculation method provided in the present invention.

[0039] In a second aspect, the present invention provides a material area deviation correction detection device, comprising:

[0040] An image acquisition module, configured to acquire a surface image of the pole piece in response to a correction request;

[0041] A correction module is used to repeatedly execute preset correction steps with the goal of ensuring that the deviation between the center line position of the material area and the preset correction reference center line position is less than the minimum value of the preset correction range;

[0042] The preset deviation correction steps include:

[0043] Based on the surface image of the pole piece, the centerline position of the material area in the width direction of the pole piece is calculated;

[0044] Calculating a deviation value based on the centerline position of the material area and the preset correction reference centerline position;

[0045] Divide the preset correction range into multiple range sub-intervals, and there is a common endpoint between adjacent range sub-intervals;

[0046] Determining a correction value based on the deviation value and the multiple range subintervals, and a preset correction strategy;

[0047] A correction control signal is generated according to the correction value, so that the correction device corrects the pole piece based on the correction control signal.

[0048] In the above scheme, by dividing the preset correction range into multiple range sub-intervals, the correction value is determined based on the deviation value between the center line position of the material area and the preset correction reference center line position, multiple range sub-intervals, and the preset correction strategy, so that the correction value gradually decreases until the material area is centered. This can reduce the frequency of correction, make the system more sensitive, and achieve higher control accuracy.

[0049] In a third aspect, the present invention provides a material area deviation correction detection device, comprising:

[0050] The feeding unit is used to transport the electrode to the designated location;

[0051] The vision unit includes a camera subunit and an algorithm subunit, wherein the camera subunit is used to collect a surface image of the electrode piece; the algorithm subunit is used to repeatedly perform a preset correction step based on the surface image of the electrode piece, with the goal of ensuring that the deviation between the center line position of the material area and the preset correction reference center line position is less than the minimum value of the preset correction range;

[0052] The preset correction step includes: calculating the position of the centerline of the material area in the width direction of the electrode piece based on the surface image of the electrode piece; calculating the deviation value based on the centerline position of the material area and the position of the preset correction reference centerline; dividing the preset correction range into multiple range sub-intervals, with a common endpoint between adjacent range sub-intervals; determining the correction value based on the deviation value and the multiple range sub-intervals, and a preset correction strategy; and generating a correction control signal according to the correction value;

[0053] The correction unit is connected to the algorithm subunit, receives the correction control signal sent by the algorithm subunit, and corrects the pole piece based on the correction control signal.

[0054] In the above scheme, by dividing the preset correction range into multiple range sub-intervals, the correction value is determined based on the deviation value between the center line position of the material area and the preset correction reference center line position, multiple range sub-intervals, and the preset correction strategy, so that the correction value gradually decreases until the material area is centered. This can reduce the frequency of correction, make the system more sensitive, and achieve higher control accuracy.

[0055] In a fourth aspect, the present invention provides a material area deviation correction detection system, comprising a storage medium and a processor;

[0056] The storage medium is used to store instructions;

[0057] The processor is configured to operate according to the instructions to execute the method according to any one of the first aspects.

[0058] Compared with the prior art, the present invention has the following beneficial effects:

[0059] The present invention divides the preset correction range into multiple range sub-intervals, and determines the correction value based on the deviation value between the center line position of the material area and the preset correction reference center line position, multiple range sub-intervals, and a preset correction strategy, so as to achieve a gradual decrease in the correction value until the material area is centered. The frequency of correction can be reduced, the system is more sensitive, and the achievable control accuracy is also higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive work, among which:

[0061] Figure 1 This is a flow chart of a material area deviation correction detection method in one embodiment of the present invention;

[0062] Figure 2 1 is a hardware configuration diagram of a material area deviation correction detection system in one embodiment of the present invention;

[0063] Figure 3 is a diagram of a visual unit structure in one embodiment of the present invention;

[0064] In the picture:

[0065] 1-feeding unit, 2-vision unit, 3-correction unit, 201-camera subunit, 202-algorithm subunit. DETAILED DESCRIPTION

[0066] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0067] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features specified as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0068] Example 1

[0069] An embodiment of the present invention provides a material area deviation correction detection method, comprising the following steps:

[0070] (1) Responding to a correction request, obtaining a surface image of the pole piece;

[0071] (2) With the deviation between the center line position of the material area and the preset correction reference center line position being less than the minimum value of the preset correction range, the preset correction steps are repeated;

[0072] The preset deviation correction steps include:

[0073] Based on the surface image of the pole piece, the centerline position of the material area in the width direction of the pole piece is calculated;

[0074] Calculating a deviation value based on the centerline position of the material area and the preset correction reference centerline position;

[0075] Divide the preset correction range into multiple range sub-intervals, and there is a common endpoint between adjacent range sub-intervals;

[0076] Determining a correction value based on the deviation value and the multiple range subintervals, and a preset correction strategy;

[0077] A correction control signal is generated according to the correction value, so that the correction device corrects the pole piece based on the correction control signal.

[0078] In the above scheme, by dividing the preset correction range into multiple range sub-intervals, the correction value is determined based on the deviation value between the center line position of the material area and the preset correction reference center line position, multiple range sub-intervals, and the preset correction strategy, so that the correction value is gradually reduced until the material area is centered. This can reduce the frequency of correction, make the system more sensitive, and achieve higher control accuracy. The material area correction detection method in the embodiment of the present invention can be used in the closed-loop correction system of the coating machine or slitting machine in the lithium battery industry. The coating machine or slitting machine process needs to use correction to correct the electrode so that the size of the coil after slitting meets the requirements of the subsequent process.

[0079] In a specific implementation of the embodiment of the present invention, multiple range sub-intervals are arranged in sequence, and the maximum value of the previous interval and the minimum value of the next interval are the same value; the method for determining the correction value includes:

[0080] If the deviation value is less than the minimum value of the preset correction range, the correction value is 0;

[0081] If the deviation value is within the first range subinterval, the correction value is the deviation value;

[0082] If the deviation value is within a range subinterval other than the first range subinterval, the correction value is the minimum value of the range subinterval;

[0083] If the deviation value is greater than the maximum value of the preset correction range, the correction value is the maximum value of the preset correction range.

[0084] The above scheme provides specific steps for determining the deviation correction value. This approach can effectively reduce deviation correction frequency, enhance system sensitivity, and achieve higher control accuracy. Theoretically, the more sub-ranges (i.e., more decomposition segments) a range has, the smaller the deviation fluctuation range will be, achieving higher deviation correction accuracy and reducing the number of deviation corrections required. During implementation, the number of sub-ranges can be determined based on actual needs.

[0085] In a specific implementation of the embodiment of the present invention, the range subintervals include [a, b], (b, c], (c, d];

[0086] If the deviation value is less than a, the correction value is 0;

[0087] If a≤deviation value≤b, the correction value is the deviation value;

[0088] If b<deviation value≤c, the correction value is b;

[0089] If c<deviation value≤d, the correction value is c;

[0090] If d < deviation value, the correction value is d.

[0091] In the above scheme, the range sub-intervals are set to 3, and a method for determining the correction value when the deviation value is within each range sub-interval is given, which is conducive to implementation by technical personnel in this field, reduces implementation difficulty, and saves R&D time and cost.

[0092] In a specific implementation of the embodiment of the present invention, a=0.1, b=0.2, c=0.4, and d=0.8.

[0093] In the above scheme, specific values ​​of parameters a, b, c, and d are given. In theory, the electrode tape running range can be controlled within ±0.1mm.

[0094] In a specific implementation of an embodiment of the present invention, when the number of surface images of the electrode obtained is greater than 1, the material area centerline position corresponding to each surface image is calculated respectively, and the average is calculated based on all material area centerline positions as the final material area centerline position.

[0095] In the above solution, by calculating the mean of the material area center line positions corresponding to all surface images, the accuracy of the material area center line positions can be effectively improved.

[0096] In a specific implementation of the embodiment of the present invention, the surface image includes a front surface image and a back surface image.

[0097] In the above solution, by calculating the mean of the center line positions of the material area corresponding to the front surface image and the back surface image, it is possible to avoid the coating grabbing the edge of the foil, resulting in the influence of the material width caused by the coating position deviation.

[0098] In a specific implementation of the embodiment of the present invention, the method for calculating the centerline position of the material area includes:

[0099] Calculate the material area width of the electrode through pixel points;

[0100] Based on the material zone width, the centerline position of the discharge zone is calculated.

[0101] In the above scheme, a specific calculation method for the centerline position of the material area is given, which is convenient for those skilled in the art to directly apply the calculation method provided in the present invention.

[0102] Example 2

[0103] The present invention provides a material area deviation correction detection device, comprising:

[0104] An image acquisition module, configured to acquire a surface image of the pole piece in response to a correction request;

[0105] A correction module is used to repeatedly execute preset correction steps with the goal of ensuring that the deviation between the center line position of the material area and the preset correction reference center line position is less than the minimum value of the preset correction range;

[0106] The preset deviation correction steps include:

[0107] Based on the surface image of the pole piece, the centerline position of the material area in the width direction of the pole piece is calculated;

[0108] Calculating a deviation value based on the centerline position of the material area and the preset correction reference centerline position;

[0109] Divide the preset correction range into multiple range sub-intervals, and there is a common endpoint between adjacent range sub-intervals;

[0110] Determining a correction value based on the deviation value and the multiple range subintervals, and a preset correction strategy;

[0111] A correction control signal is generated according to the correction value, so that the correction device corrects the pole piece based on the correction control signal.

[0112] In the above scheme, by dividing the preset correction range into multiple range sub-intervals, the correction value is determined based on the deviation value between the center line position of the material area and the preset correction reference center line position, multiple range sub-intervals, and the preset correction strategy, so that the correction value gradually decreases until the material area is centered. This can reduce the frequency of correction, make the system more sensitive, and achieve higher control accuracy.

[0113] The rest are the same as in Example 1.

[0114] Example 3

[0115] Based on the same inventive concept as that of Example 1, a material zone deviation correction detection device is provided in the embodiment of the present invention, such as Figure 2-Figure 3 Shown, including:

[0116] The feeding unit 1 is used to transport the electrode to a designated position; in the specific implementation process, the designated position refers to the shooting range of the visual unit so that the visual unit 2 can capture the surface image of the electrode;

[0117] The vision unit 2 includes a camera subunit 201 and an algorithm subunit 202, wherein the camera subunit 201 is used to collect the surface image of the pole piece; the algorithm subunit 202 is used to repeatedly perform the preset correction step based on the surface image of the pole piece, with the deviation value between the material area centerline position and the preset correction reference centerline position being less than the minimum value of the preset correction range; the preset correction step includes: calculating the material area centerline position in the width direction of the pole piece based on the surface image of the pole piece; calculating the deviation value based on the material area centerline position and the preset correction reference centerline position; dividing the preset correction range into multiple range subintervals, with a common endpoint between adjacent range subintervals; determining the correction value based on the deviation value and the multiple range subintervals, and the preset correction strategy; generating a correction control signal according to the correction value; in the specific implementation process, the camera subunit 201 can adopt an industrial camera or other shooting equipment, etc., as long as it can realize the collection of the surface image of the pole piece, the specific structure of the camera subunit 201 is not limited in the present invention;

[0118] The correction unit 3 is connected to the algorithm subunit 202, receives the correction control signal sent by the algorithm subunit 202, and corrects the pole piece based on the correction control signal. In the specific implementation process, the correction unit 3 can be implemented using existing technology, and the specific structure of the correction unit 3 is not limited in the present invention.

[0119] In the above scheme, by dividing the preset correction range into multiple range sub-intervals, the correction value is determined based on the deviation value between the center line position of the material area and the preset correction reference center line position, multiple range sub-intervals, and the preset correction strategy, so that the correction value gradually decreases until the material area is centered. This can reduce the frequency of correction, make the system more sensitive, and achieve higher control accuracy.

[0120] The working process of the material area deviation correction detection device in the embodiment of the present invention is described in detail below with reference to a specific implementation method.

[0121] The main working process of the material area correction detection device is as follows: the feeding unit 1 is responsible for the operation of the pole piece, and the pole piece is moved into the shooting range of the visual unit 2 so that the visual unit 2 can detect the material width of the pole piece. The visual unit 2 is generally installed in front of the correction unit 3 to facilitate the correction unit 3 to correct the pole piece. The visual unit 2 includes a camera subunit 201 and an algorithm subunit 202, wherein the camera subunit 201 captures the edge of the pole piece and calculates the material width of the pole piece through pixel points (this process is implemented using existing technology, so the present invention will not go into details). The algorithm subunit 202 analyzes the material width of the pole piece, calculates the deviation between the center line position of the material area and the preset correction reference center line position, and determines the range sub-interval to which the deviation value belongs. Based on the deviation value and multiple range sub-intervals, as well as the preset correction strategy, after determining the correction value, the correction value is sent to the correction unit 3, and the correction unit 3 corrects the pole piece path by adjustment.

[0122] like Figure 1 As shown, the specific working process is:

[0123] S0: The device is started, and the pole piece moves to a designated position within the shooting range of the camera subunit 201 through the feeding unit 1;

[0124] S1: The camera subunit 201 collects the surface image of the pole piece, and the algorithm subunit 202 measures and records the width of the front and back fabric areas of the pole piece;

[0125] S2: The algorithm subunit 202 calculates the deviation between the centerline position of the discharge area and the preset correction reference centerline position;

[0126] S3: The camera subunit 201 collects n data, and then the algorithm subunit 202 calculates the deviation from the mean value x.

[0127] S4: The algorithm subunit 202 determines the relationship between the deviation mean x and the minimum value a of the first range subinterval. If x < a, the deviation correction value is 0 and the deviation corrector does not perform any action. If a ≤ x, then S5 is executed.

[0128] S5: The algorithm subunit 202 determines the relationship between the deviation mean x and the maximum value b of the first range subinterval. If the correction value a≤x<b, the correction value is x, and S6 is executed.

[0129] S6: The algorithm subunit 202 sends the correction value to the correction unit 3, and then executes S8;

[0130] S7: Send the maximum allowable correction value (i.e. the maximum value of the preset correction range);

[0131] S8: the correction unit 3 corrects the pole piece based on the received correction value, and then executes S9;

[0132] S9: After waiting for a certain distance, execute S10;

[0133] S10: Combine the camera subunit 201 and the algorithm subunit 202 to determine whether the process has been corrected. If the judgment result is yes, execute S11. If the judgment result is no, return to execute S5. If b < x, judge the x value. If b ≤ x < c, the correction value is b; if c ≤ x < d, the correction value is c; if d ≤ x (that is, x exceeds the maximum allowable range), the correction value is d, execute S7, then execute S8, the correction unit 3 corrects the pole piece, and then execute S9 and S10 to determine whether the process has been corrected. If so, execute S11. If the result is no, return to execute S5.

[0134] S11: Detection ends.

[0135] Based on the above steps, the correction value can be gradually reduced until the material area is centered.

[0136] In summary, the material zone deviation correction device in the embodiment of the present invention, through the cooperation of the feed unit 1, the visual unit 2, and the correction unit 3, can achieve electrode material zone deviation correction. By properly setting the values ​​of a, b, c, and d, the electrode tape running range can theoretically be controlled within ±0.1mm. The material zone deviation correction device in the embodiment of the present invention has excellent accuracy and compatibility, and its structure is simple and easy to operate.

[0137] Example 4

[0138] Based on the same inventive concept as Example 1, an embodiment of the present invention provides a material area deviation correction detection system, including a storage medium and a processor;

[0139] The storage medium is used to store instructions;

[0140] The processor is configured to operate according to the instructions to perform the method according to any one of the embodiments 1.

[0141] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present application may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0142] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0143] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0144] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 The steps for the function specified in one or more boxes.

[0145] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which are all protected by the present invention.

[0146] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A material area deviation correction detection method, characterized in that: include: In response to a correction request, acquiring a surface image of the pole piece; The preset correction steps are repeated with the goal that the deviation between the center line position of the material area and the preset correction reference center line position is less than the minimum value of the preset correction range; The preset deviation correction steps include: Based on the surface image of the pole piece, the centerline position of the material area in the width direction of the pole piece is calculated; Calculating a deviation value based on the centerline position of the material area and the preset correction reference centerline position; Divide the preset correction range into multiple range sub-intervals, and there is a common endpoint between adjacent range sub-intervals; Determining a correction value based on the deviation value and the multiple range subintervals, and a preset correction strategy; A correction control signal is generated according to the correction value, so that the correction device corrects the pole piece based on the correction control signal.

2. A material area deviation correction detection method according to claim 1, characterized in that: Multiple range subintervals are arranged in sequence, and the maximum value of the previous range subinterval and the minimum value of the next range subinterval are the same value; the method for determining the correction value includes: If the deviation value is less than the minimum value of the preset correction range, the correction value is 0; If the deviation value is within the first range subinterval, the correction value is the deviation value; If the deviation value is within a range subinterval other than the first range subinterval, the correction value is the minimum value of the range subinterval; If the deviation value is greater than the maximum value of the preset correction range, the correction value is the maximum value of the preset correction range.

3. A material area deviation correction detection method according to claim 2, characterized in that: The range subintervals include [a, b], (b, c], (c, d]; If the deviation value is less than a, the correction value is 0; If a≤deviation value≤b, the correction value is the deviation value; If b<deviation value≤c, the correction value is b; If c<deviation value≤d, the correction value is c; If d < deviation value, the correction value is d.

4. A material area deviation correction detection method according to claim 3, characterized in that: a=0.1, b=0.2, c=0.4, d=0.

8.

5. A material area deviation correction detection method according to claim 1, characterized in that: When the number of surface images of the electrode obtained is greater than 1, the material area centerline position corresponding to each surface image is calculated respectively, and the average value based on all material area centerline positions is calculated as the final material area centerline position.

6. A material area deviation correction detection method according to claim 1 or 5, characterized in that: The surface image includes a front surface image and a back surface image.

7. A material area deviation correction detection method according to claim 1, characterized in that: The calculation method of the centerline position of the material area includes: Calculate the material area width of the electrode through pixel points; Based on the material zone width, the centerline position of the discharge zone is calculated.

8. A material area deviation correction detection device, characterized in that: include: An image acquisition module, configured to acquire a surface image of the pole piece in response to a correction request; A correction module is used to repeatedly execute preset correction steps with the goal of ensuring that the deviation between the center line position of the material area and the preset correction reference center line position is less than the minimum value of the preset correction range; The preset deviation correction steps include: Based on the surface image of the pole piece, the centerline position of the material area in the width direction of the pole piece is calculated; Calculating a deviation value based on the centerline position of the material area and the preset correction reference centerline position; Divide the preset correction range into multiple range sub-intervals, and there is a common endpoint between adjacent range sub-intervals; Determining a correction value based on the deviation value and the multiple range subintervals, and a preset correction strategy; A correction control signal is generated according to the correction value, so that the correction device corrects the pole piece based on the correction control signal.

9. A material area deviation correction detection device, characterized in that: include: The feeding unit is used to transport the electrode to the designated location; A vision unit, comprising a camera subunit and an algorithm subunit, wherein the camera subunit is used to collect a surface image of the pole piece; The algorithm subunit is used to repeatedly perform the preset correction steps based on the surface image of the pole piece, with the goal of ensuring that the deviation between the center line position of the material area and the preset correction reference center line position is less than the minimum value of the preset correction range; The preset correction step includes: calculating the position of the centerline of the material area in the width direction of the electrode piece based on the surface image of the electrode piece; calculating the deviation value based on the centerline position of the material area and the position of the preset correction reference centerline; dividing the preset correction range into multiple range sub-intervals, with a common endpoint between adjacent range sub-intervals; determining the correction value based on the deviation value and the multiple range sub-intervals, and a preset correction strategy; and generating a correction control signal according to the correction value; The deflection correction unit is connected to the algorithm subunit, receives the deflection correction control signal sent by the algorithm subunit, and corrects the pole piece based on the deflection correction control signal.

10. A material area deviation correction detection system, characterized in that: including storage media and processors; The storage medium is used to store instructions; The processor is configured to operate according to the instructions to perform the method according to any one of claims 1-7.

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