Method and apparatus for coating rectification

Abstract

The embodiment of the present application provides a coating deviation correction method and device, which can effectively improve the performance of a battery. The method comprises the following steps: acquiring a first distance and a second distance, wherein the first distance is the distance from the edge of a coating area on a first surface of a pole piece substrate to a reference edge, and the second distance is the distance from the edge of a coating area on a second surface of the pole piece substrate to the reference edge; determining a target deviation correction amount in a coating process according to the first distance, the second distance and at least one preset deviation correction amount.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, and in particular to a method and apparatus for coating correction. Background Technology

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. In this context, electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the automotive industry's sustainable development. And for electric vehicles, battery technology is a crucial factor in their development.

[0003] The battery manufacturing process is quite complex, involving multiple steps. Among them, the coating process is an indispensable step, as it has a crucial impact on battery performance. Summary of the Invention

[0004] This application provides a coating correction method and apparatus that can effectively improve battery performance.

[0005] In a first aspect, a method for coating correction is provided, the method comprising: obtaining a first distance and a second distance, wherein the first distance is the distance from the edge of the coating area on a first surface of the electrode substrate to a reference edge, and the second distance is the distance from the edge of the coating area on a second surface of the electrode substrate to the reference edge; and determining a target correction amount during the coating process based on the first distance, the second distance and at least one preset correction amount.

[0006] In this embodiment, by obtaining the distance from the edge of the coating area on two corresponding surfaces of the electrode substrate to the reference edge, the coating misalignment size between the two corresponding surfaces can be determined. Then, based on a preset correction amount, the target correction amount during the coating process is determined, enabling the target correction amount to be determined with high efficiency and accuracy. Correction based on this target correction amount ensures that the coating misalignment size between the two corresponding surfaces remains within specifications, thereby effectively improving battery performance.

[0007] In some possible implementations, determining the target correction amount during the coating process based on the first distance, the second distance, and the at least one preset correction amount includes: determining a first misalignment value set based on the first distance and the second distance, the first misalignment value set including a first misalignment value between the edge of the coating area on at least one first surface and the edge of the coating area on the corresponding second surface in the width direction of the electrode substrate; and determining the target correction amount based on the first misalignment value and the at least one preset correction amount.

[0008] The above technical solution determines the misalignment value between two corresponding surfaces based on a first distance and a second distance, which is simple to implement and effectively reduces the complexity of implementation. Furthermore, a target correction amount is determined based on the misalignment value between the two corresponding surfaces and a preset correction amount, enabling the target correction amount to be determined with high efficiency and accuracy. Correction is performed based on this target correction amount, ensuring that the coating misalignment size between the two corresponding surfaces is within the specified range, thereby effectively improving battery performance.

[0009] In some possible implementations, determining the target correction amount based on the first misalignment value and the at least one preset correction amount includes: using the at least one preset correction amount to sequentially perform initial correction on the first misalignment value to obtain at least one set of second misalignment values, wherein each of the at least one set of second misalignment values ​​is a set of misalignment values ​​after performing initial correction on the first misalignment value using the same preset correction amount, and the number of the at least one set of second misalignment values ​​is the same as the number of the at least one preset correction amount; and determining the target correction amount based on the at least one set of second misalignment values, the at least one preset correction amount, and the first misalignment value.

[0010] The above technical solution first uses a preset correction amount to perform initial correction on the misalignment value between two corresponding surfaces, and then determines the final target correction amount based on the result of the initial correction. This helps to eliminate unsuitable correction amounts from the preset correction amounts, thereby reducing the computational load for determining the target correction amount and improving the efficiency of determining the target correction amount and performing correction.

[0011] In some possible implementations, each of the at least one set of second misaligned values ​​includes at least one second misaligned value. Determining the target correction amount based on the at least one set of second misaligned values, the at least one preset correction amount, and the first misaligned value includes: selecting the second misaligned value with the largest absolute value from each of the at least one set of second misaligned values; determining a second target misaligned value, where the second target misaligned value is a misaligned value less than the first target misaligned value among the at least one second misaligned value with the largest absolute value, and the first target misaligned value is the misaligned value with the largest absolute value in the first set of misaligned values; and determining the target correction amount based on a first preset correction amount among the at least one preset correction amount, where the first preset correction amount includes the preset correction amount corresponding to the second target misaligned value.

[0012] During the correction process, if using a certain correction amount to correct a misaligned value results in an absolute misalignment value that is larger than before correction—meaning the correction worsens the misalignment—then that correction amount is unsuitable. Therefore, the above technical solution selects misalignment values ​​after initial correction whose absolute values ​​are smaller than before correction, and determines the target correction amount based on the selected misalignment value, thus discarding unsuitable correction amounts. This not only reduces the probability of worsening the misalignment but also ensures that the number of suitable correction amounts selected is less than the initially preset number, effectively reducing the time spent determining the target correction amount and improving efficiency.

[0013] In some possible implementations, when there are multiple first preset correction amounts, determining the target correction amount based on the first preset correction amount among the at least one preset correction amount includes: selecting a set of misaligned values ​​from the second misaligned value set after initial correction of the first misaligned values ​​using the first preset correction amount, to obtain at least one second target misaligned value set; and determining the target correction amount based on the second misaligned value included in each second target misaligned value set in the at least one second target misaligned value set.

[0014] The above technical solution, based on the misalignment value obtained after initial correction of the misalignment value between two surfaces using an appropriate correction amount, determines the target correction amount, which can greatly improve the accuracy of the determined target correction amount.

[0015] In some possible implementations, determining the target correction amount based on the second misalignment value included in each of the at least one second target misalignment value sets includes: adding the second misalignment values ​​included in each of the second target misalignment value sets to obtain at least one sum of misalignment values; and determining the first preset correction amount corresponding to the sum of the misalignment values ​​with the smallest absolute value among the at least one sum of misalignment values ​​as the target correction amount.

[0016] The above technical solution, based on the rule that the sum of the errors approaches zero after correction (i.e., the smaller the sum, the better), determines the preset correction amount corresponding to the sum of the errors with the smallest absolute value among the sums of the errors as the target correction amount. The accuracy of the target correction amount determined in this way is relatively high, and the effect of correction based on the target correction amount is better, thereby further improving the performance of the battery.

[0017] In some possible implementations, when the number of the first preset correction amount is one, determining the target correction amount based on the first preset correction amount among the at least one preset correction amount includes: determining the first preset correction amount as the target correction amount.

[0018] The above technical solution, when the number of the first preset correction amount is one, determines the first preset correction amount as the target correction amount, which not only greatly reduces the computational complexity, but also has a high accuracy rate in determining the target correction amount.

[0019] In some possible implementations, the at least one preset correction amount includes at least one of the following correction amounts: -0.1mm, 0.1mm, -0.2mm, 0.2mm, -0.3mm, 0.3mm, -0.4mm, 0.4mm, -0.5mm, and 0.5mm.

[0020] The above technical solution sets at least one preset correction amount to at least one of -0.1mm, 0.1mm, -0.2mm, 0.2mm, -0.3mm, 0.3mm, -0.4mm, 0.4mm, -0.5mm, and 0.5mm. This not only corrects the misalignment of the coated AB side to within the specification range, but also meets the correction accuracy of the correction mechanism and reduces the probability of strip breakage of the electrode substrate.

[0021] In a second aspect, a coating correction device is provided, comprising: an acquisition unit for acquiring a first distance and a second distance, wherein the first distance is the distance from the edge of the coating area on a first surface of the electrode substrate to a reference edge, and the second distance is the distance from the edge of the coating area on a second surface of the electrode substrate to the reference edge; and a determination unit for determining a target correction amount during the coating process based on the first distance, the second distance, and at least one preset correction amount.

[0022] In some possible implementations, the determining unit is specifically configured to: determine a first misalignment value set based on the first distance and the second distance, the first misalignment value set including a first misalignment value between the edge of a coating area on at least one first surface and the edge of a corresponding coating area on the second surface in the width direction of the electrode substrate; and determine the target correction amount based on the first misalignment value and the at least one preset correction amount.

[0023] In some possible implementations, the apparatus further includes: a correction unit, configured to perform initial correction on the first misalignment value sequentially using the at least one preset correction amount to obtain at least one set of second misalignment values, wherein each of the at least one set of second misalignment values ​​is a set of misalignment values ​​after initial correction of the first misalignment value using the same preset correction amount, and the number of the at least one set of second misalignment values ​​is the same as the number of the at least one preset correction amount; the determining unit is specifically configured to: determine the target correction amount based on the at least one set of second misalignment values, the at least one preset correction amount, and the first misalignment value.

[0024] In some possible implementations, each of the at least one set of second misaligned values ​​includes at least one second misaligned value, and the apparatus further includes: a selection unit, configured to select the second misaligned value with the largest absolute value from each of the at least one set of second misaligned values; the determining unit is specifically configured to: determine a second target misaligned value, wherein the second target misaligned value is a misaligned value less than a first target misaligned value among the at least one second misaligned value with the largest absolute value, and the first target misaligned value is the misaligned value with the largest absolute value in the first set of misaligned values; and determine a target correction amount based on a first preset correction amount among the at least one preset correction amount, wherein the first preset correction amount includes a preset correction amount corresponding to the second target misaligned value.

[0025] In some possible implementations, when there are multiple first preset correction amounts, the selection unit is specifically used to: select, from the second misalignment value set, a set of misalignment values ​​after initial correction of the first misalignment value using the first preset correction amount, to obtain at least one second target misalignment value set; the determination unit is specifically used to: determine the target correction amount based on the second misalignment value included in each second target misalignment value set in the at least one second target misalignment value set.

[0026] In some possible implementations, the determining unit is specifically used to: add the second target misalignment values ​​included in each second misalignment value set to obtain at least one sum of misalignment values; and determine the first preset correction amount corresponding to the sum of the misalignment values ​​with the smallest absolute value among the at least one sum of misalignment values ​​as the target correction amount.

[0027] In some possible implementations, when the number of the first preset correction amount is one, the determining unit is specifically used to: determine the first preset correction amount as the target correction amount.

[0028] In some possible implementations, the at least one preset correction amount includes at least one of the following correction amounts: -0.1mm, 0.1mm, -0.2mm, 0.2mm, -0.3mm, 0.3mm, -0.4mm, 0.4mm, -0.5mm, and 0.5mm.

[0029] Thirdly, an apparatus for coating correction is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to invoke the computer program to execute the methods in the first aspect or its various implementations described above.

[0030] Fourthly, a computer-readable storage medium is provided for storing a computer program that causes a computer to perform the methods described in the first aspect or its implementations. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the drawings without creative effort.

[0032] The accompanying drawings are not drawn to scale.

[0033] Figure 1 This is a schematic flowchart of a coating correction method according to an embodiment of this application.

[0034] Figure 2 This is a schematic diagram of an AB side coating according to an embodiment of this application.

[0035] Figure 3 This is a schematic block diagram of a coating correction device according to an embodiment of this application.

[0036] Figure 4 This is a schematic block diagram of a coating correction device according to an embodiment of this application. Detailed Implementation

[0037] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to illustrate the principles of this application by way of example, but should not be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0038] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," etc., indicating orientation or positional relationships are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0039] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0040] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0041] With the development of new energy technologies, the application fields of batteries are becoming increasingly widespread. For example, batteries can serve as the main power source for electrical devices (such as vehicles, ships, or spacecraft). It should be understood that the battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity.

[0042] Optionally, the battery can be a power storage battery. In terms of battery type, it can be a lithium-ion battery, lithium metal battery, lead-acid battery, nickel-metal hydride battery, lithium-sulfur battery, lithium-air battery, or sodium-ion battery, etc., and no specific limitation is made in this application embodiment. In terms of battery size, the battery in this application embodiment can be a cell / battery unit, or a battery module or battery pack, and no specific limitation is made in this application embodiment.

[0043] The battery manufacturing process is complex, involving multiple steps such as mixing, coating, rolling, die-cutting, winding, electrolyte injection, and formation. Among these, coating is a crucial step, significantly impacting battery performance. The stability, uniformity, and dimensions of the coating all affect the final battery performance. Specifically, the dimensions of the A and B sides of the coating, including positional dimensions, width dimensions, and A / B side misalignment dimensions, all have a substantial influence on battery performance.

[0044] During the coating process, deviations in the coating result of the electrode sheet may occur due to factors such as the pressure of the coating die nozzle. If the misalignment between the A and B sides of the electrode sheet coating area exceeds a certain range and is not detected and corrected in time, it may seriously affect the performance of the battery, significantly increase the scrap rate of the product, and increase manufacturing costs.

[0045] Based on this, this application proposes a coating correction method. By acquiring a first distance and a second distance, and determining the target correction amount during the coating process based on the first distance, the second distance, and at least one preset correction amount, the method involves obtaining a first distance and a second distance. The first distance is the distance from the edge of the coating area on the first surface of the electrode substrate to a reference edge, and the second distance is the distance from the edge of the coating area on the second surface of the electrode substrate to the reference edge. Thus, by acquiring the distances from the edges of the coating areas on two corresponding surfaces of the electrode substrate to the reference edge, the coating misalignment size between the two corresponding surfaces can be determined. Then, based on the preset correction amount, the target correction amount during the coating process is determined, enabling the target correction amount to be determined with high efficiency and accuracy. Correction based on this target correction amount ensures that the coating misalignment size between the two corresponding surfaces remains within specifications, thereby effectively improving battery performance.

[0046] Figure 1 A schematic flowchart of a coating correction method 100 according to an embodiment of this application is shown. Figure 1 As shown, method 100 may include at least some of the following.

[0047] S110: Obtain the first distance and the second distance. Wherein, the first distance is the distance from the edge of the coating area on the first surface of the electrode substrate to the reference edge, and the second distance is the distance from the edge of the coating area on the second surface of the electrode substrate to the reference edge.

[0048] S120: Determine the target correction amount during the coating process based on the first distance, the second distance, and at least one preset correction amount.

[0049] In this embodiment, by obtaining the distance from the edge of the coating area on two corresponding surfaces of the electrode substrate to the reference edge, the coating misalignment size between the two corresponding surfaces can be determined. Then, based on a preset correction amount, the target correction amount during the coating process is determined, enabling the target correction amount to be determined with high efficiency and accuracy. Correction based on this target correction amount ensures that the coating misalignment size between the two corresponding surfaces remains within specifications, thereby effectively improving battery performance.

[0050] The electrode substrate may include, for example, aluminum foil, and the electrode obtained based on this electrode substrate is a positive electrode. Alternatively, the electrode substrate may include, for example, copper foil, and the electrode obtained based on this electrode substrate is a negative electrode.

[0051] The coating area is the region where the slurry is applied. The first surface can be one of the surfaces on the electrode substrate to which the slurry is applied; it can be either the front or the back of the electrode substrate. The second surface can be a surface on the electrode substrate corresponding to the first surface. For example, if the first surface is the front of the electrode substrate, then the second surface is the back of the electrode substrate; if the first surface is the back of the electrode substrate, then the second surface is the front of the electrode substrate.

[0052] The edge of the coating area can refer to the edge of the coating area along its length. It should be understood that the length direction can also be referred to as the longitudinal direction (machine direction, MD) of the electrode.

[0053] The slurry can also be called the active material. If the electrode substrate includes aluminum foil, the slurry can include lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. If the electrode substrate includes copper foil, the slurry can include carbon or silicon, etc.

[0054] The reference edge can be the edge of the electrode substrate along its length, and this edge can be either one or both of the two edges. Alternatively, the reference edge can be an edge manually set by the user.

[0055] Alternatively, the first and second distances can be measured manually, such as by using a measuring tape.

[0056] Alternatively, the first and second distances can be acquired using an imaging device, such as a charge-coupled device (CCD) vision system. This significantly improves the efficiency and accuracy of acquiring the first and second distances.

[0057] Optionally, the first and second distances can be acquired in real time. Alternatively, the first and second distances can be acquired periodically. For example, the first and second distances can be acquired every 5mm. Or, the first and second distances can be acquired randomly.

[0058] Optionally, the electrode substrate can be corrected, i.e., the target correction amount is the correction amount of the electrode substrate.

[0059] Optionally, the coating die head can be corrected, i.e., the target correction amount is the correction amount of the coating die head.

[0060] In some embodiments, S120 may specifically include: determining a first misalignment value set based on a first distance and a second distance, and determining a target correction amount based on the first misalignment value and at least one preset correction amount. The first misalignment value set includes first misalignment values ​​between the edge of a coating area on at least one first surface and the edge of a coating area on a corresponding second surface in the width direction of the electrode substrate.

[0061] This technical solution determines the misalignment value between two corresponding surfaces based on a first distance and a second distance, simplifying implementation and effectively reducing complexity. Furthermore, it determines a target correction amount based on the misalignment value and a preset correction amount, enabling high efficiency and accuracy in determining the target correction amount. Correction based on this target correction amount ensures that the coating misalignment size between the two corresponding surfaces remains within specifications, thereby effectively improving battery performance.

[0062] The width direction of the electrode substrate can also be referred to as the transverse direction (TD).

[0063] There can be multiple first distances, and correspondingly, there can also be multiple second distances. Therefore, there can also be multiple first misalignment values, and the number of first misalignment values ​​is the same as the number of first distances and second distances.

[0064] The preset correction amount can be determined based on at least one of the following parameters: national standards, company standards, or industry standards, the maximum allowable misalignment of the electrode A and B sides coating in battery manufacturing, empirical values, and on-site manufacturing requirements.

[0065] Normally, during normal manufacturing, the first misalignment value can range from -1mm to 1mm. Furthermore, excessive correction may lead to strip breakage in the electrode substrate. Moreover, the correction accuracy is typically 0.1mm during the correction process. Therefore, in this embodiment, at least one preset correction amount may include at least one of the following correction amounts: -0.1mm, 0.1mm, -0.2mm, 0.2mm, -0.3mm, 0.3mm, -0.4mm, 0.4mm, -0.5mm, and 0.5mm.

[0066] It should be noted that the "+" and "-" in the preset correction amount are not particularly limited in this application embodiment. If "+" indicates correction along the TD direction towards the first direction, such as correction to the left, then "-" indicates correction along the TD direction towards the opposite direction to the first direction, such as correction to the right. If "+" indicates correction along the TD direction towards the opposite direction to the first direction, such as correction to the right, then "-" indicates correction along the TD direction towards the first direction, such as correction to the left.

[0067] The above technical solution sets at least one preset correction amount to at least one of -0.1mm, 0.1mm, -0.2mm, 0.2mm, -0.3mm, 0.3mm, -0.4mm, 0.4mm, -0.5mm, and 0.5mm. This not only corrects the misalignment of the coated AB side to within the specification range, but also meets the correction accuracy of the correction mechanism and reduces the probability of strip breakage of the electrode substrate.

[0068] Figure 2 A schematic diagram of coating on sides A and B is shown. Figure 2 The example shown is a 1-out-of-4 material output, in which case the first misalignment value includes 4 misalignment values. In addition to a 1-out-of-4 material output, coating production lines can generally also include a 1-out-of-2 material output, a 1-out-of-6 material output, a 1-out-of-8 material output, a 1-out-of-10 material output, and a 1-out-of-12 material output.

[0069] from Figure 2 As can be seen from the data, the first distances on surface A are AL1, AL2, AL3 and AL4, and the corresponding second distances on surface B are BL1, BL2, BL3 and BL4. Therefore, the set of first misalignment values ​​includes four first misalignment values, namely a = AL1-BL1, b = AL2-BL2, c = AL3-BL3, and c = AL4-BL4.

[0070] Further, in this embodiment of the application, determining the target correction amount based on the first misalignment value and at least one preset correction amount may include: using at least one preset correction amount to sequentially perform initial correction on the first misalignment value to obtain at least one set of second misalignment values, where each of the at least one set of second misalignment values ​​is a set of misalignment values ​​after initial correction of the first misalignment value using the same preset correction amount, and the number of at least one set of second misalignment values ​​is the same as the number of at least one preset correction amount. Then, based on at least one set of second misalignment values, at least one preset correction amount, and the first misalignment value, the target correction amount is determined.

[0071] This technical solution first uses a preset correction amount to perform initial correction on the misalignment value between two corresponding surfaces, and then determines the final target correction amount based on the result of the initial correction. This helps to eliminate unsuitable correction amounts from the preset correction amounts, thereby reducing the amount of calculation required to determine the target correction amount and improving the efficiency of determining the target correction amount and performing correction.

[0072] Wherein, each of the at least one second misaligned value sets may include at least one second misaligned value, and the number of at least one second misaligned value included in each second misaligned value set is the same as the number of first misaligned values.

[0073] For example, suppose at least one preset correction value includes x1, x2, x3, x4, x5, x6, x7, x8, x9, and x10. First, x1 is used to perform initial correction on a, b, c, and d, resulting in the first set of second misaligned values, which includes four second misaligned values: (a+x1), (b+x1), (c+x1), and (d+x1). Then, x2 is used to perform initial correction on a, b, c, and d, resulting in the second set of second misaligned values, which includes four second misaligned values: (a+x2), (b+x2), (c+x2), and (d+x2)... Finally, x10 is used to perform initial correction on a, b, c, and d, resulting in the tenth set of second misaligned values, which includes four second misaligned values: (a+x10), (b+x10), (c+x10), and (d+x10).

[0074] Further, determining the target correction amount based on at least one second misalignment value set, at least one preset correction amount, and a first misalignment value may include: selecting the second misalignment value with the largest absolute value from each of the at least one second misalignment value set, and then determining a second target misalignment value, wherein the second target misalignment value is the misalignment value among the at least one second misalignment value with the largest absolute value that is smaller than the first target misalignment value, and the first target misalignment value is the misalignment value with the largest absolute value in the first misalignment value set. Then, the target correction amount is determined based on a first preset correction amount among the at least one preset correction amount, wherein the first preset correction amount includes the preset correction amount corresponding to the second target misalignment value.

[0075] During the correction process, if using a certain correction amount to correct a misaligned value results in an absolute misalignment that is larger than before correction—meaning the correction worsens the misalignment—then that correction amount is unsuitable. Therefore, the above technical solution selects misalignment values ​​after initial correction whose absolute values ​​are smaller than before correction, and determines the target correction amount based on the selected misalignment value, discarding unsuitable correction amounts. This not only reduces the probability of worsening the misalignment but also ensures that the number of suitable correction amounts selected is less than the initially preset number, effectively reducing the time spent determining the target correction amount and improving efficiency.

[0076] To continue with the example, in the first set of second misaligned values, we select the second misaligned value with the largest absolute value, i.e., h1 = max(|a+x1|、|b+x1|、|c+x1|、|d+x1|). In the second set of second misaligned values, we select the second misaligned value with the largest absolute value, i.e., h2 = max(|a+x2|、|b+x2|、|c+x2|、|d+x2|)... and in the tenth set of second misaligned values, we select the second misaligned value with the largest absolute value, i.e., h10 = max(|a+x10|、|b+x10|、|c+x10|、|d+x10|).

[0077] Then, select the misalignment value with the largest absolute value from the first misalignment value set and define it as the first target misalignment value, i.e., the first target misalignment value f = max(|a|, |b|, |c|, |d|).

[0078] Then, select the misalignment value less than f from h1, h2, h3...h10. Assuming that h1, h3, h6 and h8 are less than f, the preset correction values ​​corresponding to h1, h3, h6 and h8 are x1, x3, x6 and x8 respectively. x1, x3, x6 and x8 are collectively referred to as the first preset correction value.

[0079] The first preset correction value can be multiple or a single value.

[0080] When the number of the first preset correction amount is one, the first preset correction amount can be determined as the target correction amount.

[0081] The above technical solution, when the number of the first preset correction amount is one, determines the first preset correction amount as the target correction amount, which not only greatly reduces the computational complexity, but also has a high accuracy rate in determining the target correction amount.

[0082] When there are multiple first preset correction values, a set of misaligned values ​​after initial correction of the first misaligned value using the first preset correction value can be selected from the second misaligned value set to obtain at least one second target misaligned value set. Then, the target correction value is determined based on the second misaligned value included in each second target misaligned value set in the at least one second target misaligned value set.

[0083] This technical solution determines the target correction amount based on the initial correction value obtained after correcting the misalignment value between two surfaces using an appropriate correction amount, which can greatly improve the accuracy of the determined target correction amount.

[0084] To illustrate further, the first set of second-target misalignment values ​​includes the misalignment values ​​obtained after initial correction of a, b, c, and d using x1. That is, the first set of second-target misalignment values ​​includes misalignment values ​​a1, b1, c1, and d1, where a1 = a + x1, b1 = b + x1, c1 = c + x1, and d1 = d + x1. The second set of second-target misalignment values ​​includes the misalignment values ​​obtained after initial correction of a, b, c, and d using x3. That is, the second set of second-target misalignment values ​​includes misalignment values ​​a2, b2, c2, and d2, where a2 = a + x3, b2 = b + x3, c2 = c + x3, and d1 = d + x3. The third set of second-target misalignment values ​​includes the misalignment values ​​obtained after initial correction of a, b, c, and d using x6. Specifically, the third set of second-target misalignment values ​​includes misalignment values ​​a3, b3, c3, and d3, where a3 = a + x6, b3 = b + x6, c3 = c + x6, and d3 = d + x6. The fourth set of second-target misalignment values ​​includes the misalignment values ​​obtained after initial correction of a, b, c, and d using x8. Specifically, the fourth set of second-target misalignment values ​​includes four misalignment values ​​a4, b4, c4, and d4, where a4 = a + x8, b4 = b + x8, c4 = c + x8, and d4 = d + x8.

[0085] Then, the second misaligned values ​​included in each second target misaligned value set can be added together to obtain at least one sum of misaligned values. The first preset correction amount corresponding to the sum of the misaligned values ​​with the smallest absolute value among the at least one sum of misaligned values ​​is determined as the target correction amount.

[0086] The above technical solution, based on the rule that the sum of the errors approaches zero after correction (i.e., the smaller the sum, the better), determines the preset correction amount corresponding to the sum of the errors with the smallest absolute value among the sums of the errors as the target correction amount. The accuracy of the target correction amount determined in this way is relatively high, and the effect of correction based on the target correction amount is relatively high, thereby further improving the performance of the battery.

[0087] Specifically, after adding the second misaligned values ​​in each set of second target misaligned values, we get the sum of four misaligned values, namely y1=a1+b1+c1+d1, y2=a2+b2+c2+d2, y3=a3+b3+c3+d3, and y4=a4+b4+c4+d4.

[0088] Then, the target offset can be determined based on the sum of the four misalignment values.

[0089] As an example, the first preset correction amount corresponding to the sum of the four misalignment values ​​with the smallest absolute value can be determined as the target correction amount. For example, if min(|y1|、|y2|、|y3|、|y4|)=y2, then the target offset is x3.

[0090] As another example, the sum of each of the four misaligned values ​​can be averaged, and the first preset correction amount corresponding to the average with the smallest absolute value among the averages is the target correction amount.

[0091] Once the target correction amount is determined, the electrode substrate or coating die can be adjusted based on this target correction amount to ensure that the coating misalignment on the A and B sides is within the specified range.

[0092] The following describes the solutions of embodiments of this application with specific examples.

[0093] Assume the first misalignment value set includes four first misalignment values, which are 0.05mm, 0.2mm, 0.15mm and -0.5mm respectively, and the preset correction amount includes -0.1mm, 0.1mm, -0.2mm, 0.2mm, -0.3mm, 0.3mm, -0.4mm, 0.4mm, -0.5mm and 0.5mm.

[0094] First, 10 preset correction values ​​are used to correct the four first misalignment values ​​in sequence, and the second misalignment value with the largest absolute value is selected from each set of second misalignment values ​​obtained.

[0095] Specifically, after correcting the four first misalignment values ​​using -0.1mm, the first set of second misalignment values ​​is obtained: k1 = (-0.05mm, 0.1mm, 0.05mm, -0.6mm), and h1 = max(|-0.05mm|、|0.1mm|、|0.05mm|、|-0.6mm|) = 0.6mm.

[0096] After correcting the four first misalignment values ​​using 0.1mm, the second set of second misalignment values ​​is obtained: k2 = (0.15mm, 0.3mm, 0.25mm, -0.4mm), and h2 = max(|0.15mm|、|0.3mm|、|0.25mm|、|-0.4mm|) = 0.4mm.

[0097] After correcting the four first misalignment values ​​using -0.2mm, the third set of second misalignment values ​​is obtained: k3 = (-0.15mm, 0mm, -0.05mm, -0.7mm), and h3 = max(|-0.15mm|、|0mm|、|-0.05mm|、|-0.7mm|) = 0.7mm.

[0098] After correcting the four first misalignment values ​​using 0.2mm, the fourth set of second misalignment values ​​is obtained: k4 = (0.25mm, 0.4mm, 0.35mm, -0.3mm), and h4 = max(|0.25mm|、|0.4mm|、|0.35mm|、|-0.3mm|) = 0.4mm.

[0099] After correcting the four first misalignment values ​​using -0.3mm, the fifth set of second misalignment values ​​is obtained: k5 = (-0.25mm, -0.1mm, -0.15mm, -0.8mm), and h5 = max(|-0.25mm|、|-0.1mm|、|-0.15mm|、|-0.8mm|) = 0.8mm.

[0100] After correcting the four first misalignment values ​​using 0.3mm, the sixth set of second misalignment values ​​is obtained: k6 = (0.35mm, 0.5mm, 0.45mm, -0.2mm), and h6 = max(|0.35mm|、|0.5mm|、|-0.45mm|、|-0.2mm|) = 0.5mm.

[0101] After correcting the four first misalignment values ​​using -0.4mm, the seventh set of second misalignment values ​​is obtained: k7 = (-0.35mm, -0.2mm, -0.25mm, -0.9mm), and h7 = max(|-0.35mm|、|-0.2mm|、|-0.25mm|、|-0.9mm|) = 0.9mm.

[0102] After correcting the four first misalignment values ​​using 0.4mm, the eighth second misalignment value set k8 = (0.45mm, 0.6mm, 0.55mm, -0.1mm) is obtained, and h8 = max(|0.45mm|、|0.6mm|、|0.55mm|、|-0.1mm|) = 0.6mm.

[0103] After correcting the four first misalignment values ​​using -0.5mm, the ninth second misalignment value set k9 = (-0.45mm, -0.3mm, -0.35mm, -1mm) is obtained, and h9 = max(|-0.45mm|、|-0.3mm|、|-0.35mm|、|-1mm|) = 1mm.

[0104] After correcting the four first misalignment values ​​using 0.5mm, the tenth second misalignment value set k10 = (0.55mm, 0.7mm, 0.65mm, 0mm) is obtained, and h10 = max(|-0.55mm|、|0.7mm|、|0.65mm|、|0mm|) = 0.7mm.

[0105] Secondly, determine the first target misalignment value f = max(|0.05mm|, |0.2mm|, |0.15mm|, |-0.5mm|) = 0.5mm in the first misalignment value set.

[0106] It can be seen that h1, h3, h5, h7, h8, h9, and h10 are all greater than f, indicating that using the preset correction amounts of -0.1mm, -0.2mm, -0.3mm, -0.4mm, 0.4mm, -0.5mm, and 0.5mm corresponding to h1, h3, h5, h7, h8, h9, and h10 for correction results in further deviation. The misalignment size of the coating on the AB side after correction is larger than before correction. Therefore, the preset correction amounts of -0.1mm, -0.2mm, -0.3mm, -0.4mm, 0.4mm, -0.5mm, and 0.5mm corresponding to h1, h3, h5, h7, h8, h9, and h10 are abandoned. The preset correction amounts of 0.1mm, 0.2mm, and 0.3mm corresponding to h2, h4, and h6 meet the requirements.

[0107] After correcting the four first misalignment values ​​with a correction of 0.1 mm, the resulting second misalignment values ​​are 0.15 mm, 0.3 mm, 0.25 mm, and -0.4 mm. Summing these values ​​gives y1 = 0.3 mm. After correcting the four first misalignment values ​​with a correction of 0.2 mm, the resulting second misalignment values ​​are 0.25 mm, 0.4 mm, 0.35 mm, and -0.3 mm. Summing these values ​​gives y2 = 0.7 mm. After correcting the four first misalignment values ​​with a correction of 0.3 mm, the resulting second misalignment values ​​are 0.35 mm, 0.5 mm, 0.45 mm, and -0.2 mm. Summing these values ​​gives y3 = 1.1 mm.

[0108] Based on the rule that the correction value approaches 0, meaning the smaller the sum, the better, the target correction amount was ultimately determined to be 0.1mm.

[0109] In the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

[0110] Furthermore, without conflict, the various embodiments and / or technical features described in this application can be arbitrarily combined with each other, and the resulting technical solutions should also fall within the protection scope of this application.

[0111] The coating correction method according to embodiments of this application has been described in detail above. The coating correction apparatus according to embodiments of this application will now be described. It should be understood that the coating correction apparatus in embodiments of this application can execute the coating correction method in embodiments of this application.

[0112] Figure 3 A schematic block diagram of a coating correction apparatus 300 according to an embodiment of this application is shown. Figure 3 As shown, the coating correction device 300 may include:

[0113] The acquisition unit 310 is used to acquire a first distance and a second distance, wherein the first distance is the distance from the edge of the coating area on the first surface of the electrode substrate to the reference edge, and the second distance is the distance from the edge of the coating area on the second surface of the electrode substrate to the reference edge.

[0114] The determining unit 320 is used to determine the target correction amount during the coating process based on the first distance, the second distance and at least one preset correction amount.

[0115] Optionally, in this embodiment of the application, the determining unit 320 is specifically used to: determine a first misalignment value set based on a first distance and a second distance, the first misalignment value set including a first misalignment value between the edge of a coating area on at least one first surface and the edge of a coating area on a corresponding second surface in the width direction of the electrode substrate; and determine a target correction amount based on the first misalignment value and at least one preset correction amount.

[0116] Optionally, in this embodiment of the application, the coating correction device 300 may further include: a correction unit, configured to perform initial correction on a first misalignment value sequentially using at least one preset correction amount to obtain at least one set of second misalignment values, wherein each set of second misalignment values ​​is a set of misalignment values ​​after initial correction on the first misalignment value using the same preset correction amount, and the number of at least one set of second misalignment values ​​is the same as the number of at least one preset correction amount; and a determination unit 320 is specifically configured to: determine a target correction amount based on at least one set of second misalignment values, at least one preset correction amount, and the first misalignment value.

[0117] Optionally, in this embodiment of the application, each of the at least one set of second misaligned values ​​includes at least one second misaligned value. The coating correction device 300 may further include: a selection unit, configured to select the second misaligned value with the largest absolute value from each of the at least one set of second misaligned values; and a determination unit 320, specifically configured to: determine a second target misaligned value, wherein the second target misaligned value is a misaligned value less than a first target misaligned value among the at least one second misaligned value with the largest absolute value, and the first target misaligned value is the misaligned value with the largest absolute value in the first set of misaligned values; and determine a target correction amount based on a first preset correction amount among at least one preset correction amount, wherein the first preset correction amount includes the preset correction amount corresponding to the second target misaligned value.

[0118] Optionally, in this embodiment of the application, when there are multiple first preset correction amounts, the selection unit is specifically used to: select, from the second misalignment value set, a misalignment value set after initial correction of the first misalignment value using the first preset correction amount, so as to obtain at least one second target misalignment value set; the determination unit 320 is specifically used to: determine the target correction amount based on the second misalignment value included in each second target misalignment value set in the at least one second target misalignment value set.

[0119] Optionally, in this embodiment of the application, the determining unit 320 is specifically used to: add the second misalignment values ​​included in each second target misalignment value set to obtain at least one sum of misalignment values; and determine the first preset correction amount corresponding to the sum of the misalignment values ​​with the smallest absolute value among the at least one sum of misalignment values ​​as the target correction amount.

[0120] Optionally, in this embodiment of the application, when the number of the first preset correction amount is one, the determining unit 320 is specifically used to: determine the first preset correction amount as the target correction amount.

[0121] Optionally, in the embodiments of this application, at least one preset correction amount includes at least one of the following correction amounts: -0.1mm, 0.1mm, -0.2mm, 0.2mm, -0.3mm, 0.3mm, -0.4mm, 0.4mm, -0.5mm, and 0.5mm.

[0122] It should be understood that the coating correction device 300 can perform the corresponding operations in method 100, and for the sake of simplicity, it will not be described in detail here.

[0123] Figure 4 This is a schematic diagram of the hardware structure of a coating correction device 400 according to an embodiment of this application. The coating correction device 400 includes a memory 401, a processor 402, a communication interface 403, and a bus 404. The memory 401, processor 402, and communication interface 403 are interconnected via the bus 404.

[0124] The memory 401 may be a read-only memory (ROM), a static storage device, or a random access memory (RAM). The memory 401 may store a program, and when the program stored in the memory 401 is executed by the processor 402, the processor 402 and the communication interface 403 are used to execute the various steps of the coating correction method of the embodiments of this application.

[0125] The processor 402 may be a general-purpose central processing unit (CPU), microprocessor, application-specific integrated circuit (ASIC), graphics processing unit (GPU), or one or more integrated circuits, used to execute relevant programs to achieve the functions required by the units in the apparatus of this application embodiment, or to execute the coating correction method of this application embodiment.

[0126] The processor 402 can also be an integrated circuit chip with signal processing capabilities. In implementation, each step of the coating correction method in this embodiment can be completed by the integrated logic circuitry in the processor 402 or by software instructions.

[0127] The processor 402 described above can also be a general-purpose processor, a digital signal processor (DSP), an ASIC, a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly implemented by the hardware processor, or implemented by a combination of hardware and software modules in the processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory 401. The processor 402 reads the information in memory 401 and, in conjunction with its hardware, completes the functions required by the units included in the coating correction device 400 of the embodiments of this application, or executes the coating correction method of the embodiments of this application.

[0128] The communication interface 403 uses a transceiver device, such as, but not limited to, a transceiver, to enable communication between the coating correction device 400 and other devices or communication networks.

[0129] Bus 404 may include a pathway for transmitting information between various components of the coating correction apparatus 400 (e.g., memory 401, processor 402, communication interface 403).

[0130] It should be noted that although the above-described coating correction device 400 only shows a memory, processor, and communication interface, those skilled in the art should understand that in specific implementations, the coating correction device 400 may also include other devices necessary for normal operation. Furthermore, depending on specific needs, those skilled in the art should understand that the coating correction device 400 may also include hardware devices for implementing other additional functions. In addition, those skilled in the art should understand that the coating correction device 400 may only include the devices necessary for implementing the embodiments of this application, and may not necessarily include... Figure 4 All the devices shown.

[0131] This application also provides a computer-readable storage medium for storing a computer program for performing the methods described in the various embodiments of this application.

[0132] The aforementioned computer-readable storage medium may be a transient computer-readable storage medium or a non-transitory computer-readable storage medium.

[0133] This application also provides a computer program product, which includes a computer program stored on a computer-readable storage medium. The computer program includes program instructions that, when executed by a computer, cause the computer to perform the above-described coating correction method.

[0134] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method of coating correction, characterized by, The method comprises: obtaining a first distance and a second distance, wherein the first distance is a distance from a coated area edge on a first surface of a pole piece substrate to a reference edge, the second distance is a distance from a coated area edge on a second surface of the pole piece substrate to the reference edge, the reference edge comprises two edges of the pole piece substrate along a length direction, the two edges comprise a first edge and a second edge, the first distance comprises a first sub-distance and a second sub-distance, the second distance comprises a third sub-distance and a fourth sub-distance, the first sub-distance is a distance from a coated area edge close to the first edge on the first surface of the pole piece substrate to the first edge along a width direction, the second sub-distance is a distance from a coated area edge close to the second edge on the first surface of the pole piece substrate to the second edge along the width direction, the third sub-distance is a distance from a coated area edge close to the first edge on the second surface of the pole piece substrate to the first edge along the width direction, and the fourth sub-distance is a distance from a coated area edge close to the second edge on the second surface of the pole piece substrate to the second edge along the width direction; determining a first displacement value set according to the first sub-distance and the corresponding third sub-distance, and according to the second sub-distance and the corresponding fourth sub-distance, the first displacement value set comprising a first displacement value between a coated area edge on the first surface and a corresponding coated area edge on the second surface in a width direction of the pole piece substrate; determining a target correction amount in a coating process according to the first displacement value and at least one preset correction amount.

2. The method of claim 1, wherein, The determining of the target correction amount in the coating process according to the first displacement value and the at least one preset correction amount comprises: performing initial correction on the first displacement value in sequence by using the at least one preset correction amount to obtain at least one second displacement value set, each second displacement value set in the at least one second displacement value set being a displacement value set after initial correction on the first displacement value by using a same preset correction amount, the number of the at least one second displacement value set being the same as the number of the at least one preset correction amount; determining the target correction amount based on the at least one second displacement value set, the at least one preset correction amount and the first displacement value.

3. The method of claim 2, wherein, Each second displacement value set in the at least one second displacement value set comprises at least one second displacement value, and the determining of the target correction amount based on the at least one second displacement value set, the at least one preset correction amount and the first displacement value comprises: selecting a second displacement value with a maximum absolute value in each second displacement value set in the at least one second displacement value set; determining a second target displacement value, the second target displacement value being a displacement value smaller than a first target displacement value in at least one second displacement value with the maximum absolute value, the first target displacement value being a displacement value with a maximum absolute value in the first displacement value set. The target correction amount is determined based on a first preset correction amount in the at least one preset correction amount, the first preset correction amount including a preset correction amount corresponding to the second target misalignment value.

4. The method of claim 3, wherein, In a case where the number of the first preset correction amounts is a plurality, the determining the target correction amount based on the first preset correction amount in the at least one preset correction amount includes: In the second misalignment value set, a misalignment value set obtained by initially correcting the first misalignment value by using the first preset correction amount is selected to obtain at least one second target misalignment value set; The target correction amount is determined according to the second misalignment value included in each of the at least one second target misalignment value set.

5. The method of claim 4, wherein, The target correction amount is determined according to the second misalignment value included in each of the at least one second target misalignment value set, including: The second misalignment values included in each of the at least one second target misalignment value set are added to obtain at least one misalignment value sum; The first preset correction amount corresponding to the misalignment value sum with the smallest absolute value in the at least one misalignment value sum is determined as the target correction amount.

6. The method of claim 3, wherein, In a case where the number of the first preset correction amounts is one, the determining the target correction amount based on the first preset correction amount in the at least one preset correction amount includes: The first preset correction amount is determined as the target correction amount.

7. The method according to any one of claims 1 to 6, characterized in that, The at least one preset correction amount includes at least one of -0.1 mm, 0.1 mm, -0.2 mm, 0.2 mm, -0.3 mm, 0.3 mm, -0.4 mm, 0.4 mm, -0.5 mm, and 0.5 mm.

8. A device for coating rectification, characterized in that, Including: An acquisition unit is configured to acquire a first distance and a second distance, wherein the first distance is a distance from an edge of a coated area on a first surface of a pole piece substrate to a reference edge, and the second distance is a distance from an edge of a coated area on a second surface of the pole piece substrate to the reference edge, the reference edge includes two edges of the pole piece substrate along a length direction, the two edges include a first edge and a second edge, the first distance includes a first sub-distance and a second sub-distance, and the second distance includes a third sub-distance and a fourth sub-distance, the first sub-distance is a distance from an edge of a coated area on the first surface of the pole piece substrate close to the first edge to the first edge along a width direction, the second sub-distance is a distance from an edge of a coated area on the first surface of the pole piece substrate close to the second edge to the second edge along the width direction, the third sub-distance is a distance from an edge of a coated area on the second surface of the pole piece substrate close to the first edge to the first edge along the width direction, and the fourth sub-distance is a distance from an edge of a coated area on the second surface of the pole piece substrate close to the second edge to the second edge along the width direction. The determining unit is configured to determine a first displacement value set according to the first sub-distance and the corresponding third sub-distance, and according to the second sub-distance and the corresponding fourth sub-distance, the first displacement value set comprising a first displacement value between an edge of a coating area on the first surface and an edge of a coating area on the corresponding second surface in a width direction of the pole piece substrate, and determine a target offset amount in a coating process according to the first displacement value and the at least one preset offset amount.

9. The apparatus of claim 8, wherein, The apparatus further comprises: The offset unit is configured to sequentially perform initial offset on the first displacement value by using the at least one preset offset amount to obtain at least one second displacement value set, each second displacement value set in the at least one second displacement value set being a displacement value set obtained by performing initial offset on the first displacement value by using a same preset offset amount, and the number of the at least one second displacement value set being the same as the number of the at least one preset offset amount. The determining unit is specifically configured to: determine the target offset amount based on the at least one second displacement value set, the at least one preset offset amount, and the first displacement value.

10. The apparatus of claim 9, wherein, Each second displacement value set in the at least one second displacement value set comprises at least one second displacement value, and the apparatus further comprises: The selecting unit is configured to select a second displacement value with a maximum absolute value in each second displacement value set in the at least one second displacement value set. The determining unit is specifically configured to: determine a second target displacement value, the second target displacement value being a displacement value smaller than a first target displacement value in the at least one second displacement value with the maximum absolute value, the first target displacement value being a displacement value with a maximum absolute value in the first displacement value set, and determine the target offset amount based on a first preset offset amount in the at least one preset offset amount, the first preset offset amount comprising a preset offset amount corresponding to the second target displacement value. In a case where the number of the first preset offset amount is a plurality, the selecting unit is specifically configured to:

11. The apparatus of claim 10, wherein, select, in the second displacement value set, a displacement value set obtained by performing initial offset on the first displacement value by using the first preset offset amount to obtain at least one second target displacement value set. The determining unit is specifically configured to: determine the target offset amount according to second displacement values included in each second target displacement value set in the at least one second target displacement value set. The determining unit is specifically configured to:

12. The apparatus of claim 11, wherein, add the second displacement values included in each second target displacement value set to obtain at least one sum of displacement values, and determine, as the target offset amount, a first preset offset amount corresponding to a sum of displacement values with a minimum absolute value in the at least one sum of displacement values. In a case where the number of the first preset offset amount is one, the determining unit is specifically configured to: determine, as the target offset amount, the first preset offset amount.

13. The apparatus of claim 10, wherein, ​ ​ 14. The apparatus of any one of claims 8-13, wherein, The at least one preset deviation correction amount comprises at least one of the following deviation correction amounts: -0.1 mm, 0.1 mm, -0.2 mm, 0.2 mm, -0.3 mm, 0.3 mm, -0.4 mm, 0.4 mm, -0.5 mm, and 0.5 mm.

15. A device for coating rectification, characterized in that, Comprise: a memory for storing a program; a processor for executing the program stored in the memory, and when the program stored in the memory is executed, the processor is configured to execute the coating deviation correction method according to any one of claims 1 to 7.

16. A computer-readable storage medium, characterized in that, A computer program for storing, the computer program enables a computer to execute the coating deviation correction method according to any one of claims 1 to 7. A computer program for storing, the computer program enables a computer to execute the coating deviation correction method according to any one of claims 1 to 7.

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