Tension determination method and device, computer equipment and storage medium

Abstract

The embodiment of the invention discloses a tension determining method and device, computer equipment and a storage medium. The tension determining method comprises the steps that the winding diameter of a winding shaft for winding a current layer of coiled material is obtained; determining the external tension of the current layer of coiled material based on the rolling diameter of the current layer of coiled material; wherein the external tension of the current layer of coiled material is used for winding the current layer of coiled material onto the winding shaft.

Description

Technical Field

[0001] The present disclosure relates to, but is not limited to, the field of battery core winding technology, and in particular to a tension determination method and device, a computer device, and a storage medium. Background Art

[0002] In the related art, in the process of winding the coil (for example, the pole piece), the constant tension mode is basically adopted. In this way, the inner layer of the coil is prone to interlayer slippage, resulting in the barrel phenomenon, which not only causes a large amount of coil waste, but also reduces the reliability of the product. Summary of the invention

[0003] Embodiments of the present disclosure provide a tension determination method and apparatus, a computer device, a storage medium, and a computer program product.

[0004] The technical solution of the embodiment of the present disclosure is implemented as follows:

[0005] The present disclosure provides a tension determination method, the method comprising:

[0006] Get the winding diameter of the current layer of coiled material wound by the winding shaft;

[0007] Based on the winding diameter of the current layer of coiled material, the external tension of the current layer of coiled material is determined; wherein the external tension of the current layer of coiled material is used to wind the current layer of coiled material onto the winding shaft.

[0008] The present disclosure provides a tension determination method, the method comprising:

[0009] Displaying a first interface; wherein the first interface includes a tension determination control and a first display area;

[0010] In response to a triggering operation on the tension determination control, a first external tension of at least one layer of coiled material is displayed in the first display area; wherein each of the first external tensions is determined based on second configuration information of the coiled material, and each of the first external tensions is used to cooperate with the winding diameter of the current layer of coiled material to determine the external tension for winding the current layer of coiled material onto the winding shaft, and the second configuration information includes at least one of the following: the first external tension of the j-th layer of coiled material, the winding diameter of the j-th layer of coiled material, the initial winding diameter, and the static friction coefficient of the coiled material, where j is a positive integer.

[0011] The present disclosure provides a tension determination method, the method comprising:

[0012] Display a second interface; wherein the second interface includes a coil configuration control and a third display area;

[0013] In response to a triggering operation on the coil configuration control, acquiring first configuration information of the coil;

[0014] The external tension of the current layer of coil is displayed in the third display area; wherein the external tension of the current layer of coil is determined based on the first configuration information of the coil and the winding diameter of the current layer of coil, and the external tension of the current layer of coil is used to wind the current layer of coil onto the winding shaft.

[0015] The present disclosure provides a tension determination device, the device comprising:

[0016] The first acquisition module is used to obtain the winding diameter of the current layer of coiled material wound by the winding shaft;

[0017] A determination module is used to determine the external tension of the current layer of coiled material based on the winding diameter of the current layer of coiled material; wherein the external tension of the current layer of coiled material is used to wind the current layer of coiled material onto the winding shaft.

[0018] The present disclosure provides a tension determination device, the device comprising:

[0019] A first display module, used to display a first interface; wherein the first interface includes a tension determination control and a first display area;

[0020] A second display module is used to display the first external tension of at least one layer of coiled material in the first display area in response to a trigger operation on the tension determination control; wherein each of the first external tensions is determined based on the second configuration information of the coiled material, and each of the first external tensions is used to cooperate with the winding diameter of the current layer of coiled material to determine the external tension for winding the current layer of coiled material onto the winding shaft, and the second configuration information includes at least one of the following: the first external tension of the j-th layer of coiled material, the winding diameter of the j-th layer of coiled material, the initial winding diameter, and the static friction coefficient of the coiled material, and j is a positive integer.

[0021] The present disclosure provides a tension determination device, the device comprising:

[0022] A third display module, used to display a second interface; wherein the second interface includes a coil configuration control and a third display area;

[0023] A second acquisition module, configured to acquire first configuration information of the coil in response to a triggering operation on the coil configuration control;

[0024] The fourth display module is used to display the external tension of the current layer of coiled material in the third display area; wherein the external tension of the current layer of coiled material is determined based on the first configuration information of the coiled material and the winding diameter of the current layer of coiled material, and the external tension of the current layer of coiled material is used to wind the current layer of coiled material onto a winding shaft.

[0025] An embodiment of the present disclosure provides a computer device, including a processor and a memory, wherein the memory stores a computer program that can be run on the processor, and the processor implements the above method when executing the computer program.

[0026] An embodiment of the present disclosure provides a computer-readable storage medium on which a computer program is stored. When the computer program is executed by a processor, the above method is implemented.

[0027] An embodiment of the present disclosure provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and when the computer program is read and executed by a computer, the above method is implemented.

[0028] In the disclosed embodiment, the winding diameter of the current layer of coiled material is obtained by the winding reel; based on the winding diameter of the current layer of coiled material, the external tension of the current layer of coiled material is determined; wherein the external tension of the current layer of coiled material is used to roll the current layer of coiled material onto the winding reel. In this way, the external tension of the winding is determined in real time by the winding reel diameter, and compared with the constant tension mode, the degree of interlayer slippage of the inner layer of coiled material is reduced, thereby reducing the possibility of barrel phenomenon, thereby reducing the waste of coiled material and improving the reliability of the product.

[0029] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The drawings herein are incorporated into the specification and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and are used to illustrate the technical solutions of the present disclosure together with the specification.

[0031] Figure 1A A schematic diagram of the structure of a coiled material transmission device provided in an embodiment of the present disclosure;

[0032] Figure 1B A schematic diagram of an implementation flow of a tension determination method provided in an embodiment of the present disclosure;

[0033] Figure 2A A schematic diagram of an implementation flow of a tension determination method provided in an embodiment of the present disclosure;

[0034] Figure 2B A schematic diagram of the external tension required for the i-th layer of coil to pull the j-th layer of coil provided in an embodiment of the present disclosure;

[0035] Figure 2C A schematic diagram of the internal tension of a first layer of coiled material provided in an embodiment of the present disclosure;

[0036] Figure 2D A schematic diagram of a coil winding process provided by an embodiment of the present disclosure;

[0037] Figure 2E A schematic diagram of the interlayer pressure of a first layer of coiled material provided in an embodiment of the present disclosure;

[0038] Figure 3A A schematic diagram of an implementation flow of a tension determination method provided in an embodiment of the present disclosure;

[0039] Figure 3B A schematic diagram of a first interface provided by an embodiment of the present disclosure;

[0040] Figure 3C A schematic diagram of a first interface provided by an embodiment of the present disclosure;

[0041] Figure 3D A schematic diagram of a coil configuration interface provided by an embodiment of the present disclosure;

[0042] Figure 3E A schematic diagram of a first interface provided by an embodiment of the present disclosure;

[0043] Figure 4A A schematic diagram of an implementation flow of a tension determination method provided in an embodiment of the present disclosure;

[0044] Figure 4B A schematic diagram of a second interface provided by an embodiment of the present disclosure;

[0045] Figure 5A A schematic diagram of an axial interference provided by an embodiment of the present disclosure;

[0046] Figure 5B A schematic diagram of a relationship between a second difference and a winding diameter provided in an embodiment of the present disclosure;

[0047] Figure 5C A schematic diagram of the relationship between a second difference and a winding diameter provided in an embodiment of the present disclosure;

[0048] Figure 5D A schematic diagram of an implementation flow of a tension determination method provided in an embodiment of the present disclosure;

[0049] Figure 5E A schematic diagram of an implementation flow of a tension determination method provided in an embodiment of the present disclosure;

[0050] Fig. 5F A schematic diagram of an implementation flow of a tension determination method provided in an embodiment of the present disclosure;

[0051] Figure 6 A schematic diagram of the structure of a tension determination device provided in an embodiment of the present disclosure;

[0052] Figure 7 A schematic diagram of the structure of a tension determination device provided in an embodiment of the present disclosure;

[0053] Figure 8 A schematic diagram of the structure of a tension determination device provided in an embodiment of the present disclosure;

[0054] Fig. 9 A hardware entity schematic diagram of a computer device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0055] In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below in conjunction with the accompanying drawings. The described embodiments should not be regarded as limiting the present disclosure. All other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0056] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0057] In the following description, the terms "first\second\third" involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged with a specific order or sequence where permitted, so that the embodiments of the present disclosure described herein can be implemented in an order other than that illustrated or described herein.

[0058] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used herein are only for the purpose of describing the embodiments of the present disclosure and are not intended to limit the present disclosure.

[0059] In the related technology, power batteries are widely used in energy storage power systems, electric vehicles, military equipment, aerospace and other fields. Power batteries include battery cells. The electrode plate is the main component of the single cell, which directly determines the electrochemical performance and safety of the battery. The battery plate consists of a metal current collector and a coating uniformly coated on the metal current collector. During the manufacturing process, the battery plate is delivered in the form of a roll so that the battery plate can be coated, rolled, slit and other processes.

[0060] An important criterion for judging the quality of a coil is the density of the coil. When the coil is wound too loosely, it is very easy to deform and the barrel phenomenon will occur (i.e., the coil is not round enough), which is not conducive to transportation and storage. When the coil that is not round enough is rewound, it will cause periodic tension fluctuations and even cause the coil to move during transportation, making it impossible to achieve smooth transportation. At the same time, if the coil is not tight, it is easy to slip axially, resulting in uneven end faces of the coil. When the coil is wound too tightly, it will cause different layers in the coil to stick to each other, causing wrinkles. At the same time, a higher coil density means that there is a greater residual stress inside the coil, and these residual stresses will cause deformation or even damage to the coil after winding.

[0061] The production equipment for the pre-cell process (e.g., coating equipment, cold pressing equipment) currently adopts a "roll-to-roll" winding and unwinding structure. During the winding process, as the roll diameter increases, the inner layer tension will continue to decrease. If the constant tension mode is used, then when the inner layer tension value decreases to a certain extent, the maximum circumferential static friction between the layers will be less than the actual friction between the layers, causing the inner layer coil to slip between the layers, and then the barrel phenomenon will occur, which not only causes a large amount of coil waste, but also reduces the reliability of the product.

[0062] The embodiment of the present disclosure provides a tension determination method, which determines the external tension of the winding in real time by the winding diameter. Compared with the constant tension mode, the degree of interlayer slippage of the inner layer of the coil is reduced, thereby reducing the possibility of the barrel phenomenon, thereby reducing the waste of the coil and improving the reliability of the product. The method provided by the embodiment of the present disclosure can be executed by a computer device, and the computer device can be various types of terminals such as a laptop computer, a tablet computer, a desktop computer, and a coil transmission device. Among them, the coil transmission device can be a device for coil transmission of any suitable type and any suitable scenario. For example, for the battery manufacturing field, the coil transmission device can be a device for coating / rolling / slitting processes. At the same time, the coil transmission device can also be a device in a non-battery manufacturing field. In some embodiments, the coil transmission device also has a programmable logic controller (PLC).

[0063] Below, the technical solutions in the embodiments of the present disclosure will be clearly and completely described in conjunction with the drawings in the embodiments of the present disclosure.

[0064] In order to better understand the method provided by the embodiment of the present disclosure, the coil material transmission equipment in the deployment scenario of winding the coil material is described below.

[0065] Figure 1A A schematic diagram of the structure of a coiled material transmission device provided in an embodiment of the present disclosure is shown in FIG. Figure 1AAs shown, the coil material transmission device includes an unwinding device 101, a traction device 102 and a reeling device 103. The coil material 104 is unwinded from the unwinding device 101 and is transported to the reeling device 103 under the traction of the traction device 102. When the reeling device 103 reels the coil material 104, tension is applied to the coil material 104 so that the coil material 104 is reeled into the reeling device 103. In some embodiments, the coil material transmission device 100 may further include corresponding devices or equipment for performing coating, rolling or slitting processes on the coil material 104 during the conveying process.

[0066] Figure 1B A schematic diagram of a tension determination method according to an embodiment of the present disclosure is provided, which is applied to a computer device (eg, a lower computer), such as Figure 1B As shown, the method includes steps S11 to S12, wherein:

[0067] Step S11, obtaining the winding diameter of the current layer of coiled material wound by the winding shaft.

[0068] Here, the winding shaft can be any suitable shaft capable of winding the coil, for example, a seamless steel pipe. In practice, the winding shaft has an initial winding diameter, which refers to the radius of the coil when the winding shaft is not winding the coil.

[0069] The coiled material may be any suitable strip material, for example, a pole piece (i.e., a positive pole piece, a negative pole piece), a steel sheet, an adhesive tape, a cloth tape, a paper tape, etc.

[0070] The current layer of coiled material may be any layer of coiled material in the winding process, for example, the nth layer of coiled material, where n is a positive integer.

[0071] The winding diameter refers to the radius of the package after the winding shaft has wound up the nth layer of the coil. The winding diameter may be determined in any suitable manner.

[0072] For example, the winding shaft or coil is detected in real time by any suitable sensor, and the detection value (excluding the winding radius of the current layer of coil) is obtained to determine the winding diameter of the current layer. For example, the detection value is used as the winding diameter of the current layer. For another example, the sum of the detection value and the thickness of the coil is used as the winding diameter of the current layer.

[0073] For another example, in the absence of deformation, the winding diameter can be determined based on the initial winding diameter, the number of winding layers, and the thickness of the coil, where different coils can correspond to the same or different thicknesses. In some embodiments, the winding diameter R of the current layer can be obtained by the following formula (1-1): i ,Right now:

[0074] R i=R0+i×h(1-1);

[0075] Among them, R0 is the initial winding diameter, i is the number of winding layers, and h is the thickness of the coil.

[0076] Step S12: determining the external tension of the current layer of coil based on the winding diameter of the current layer of coil; wherein the external tension of the current layer of coil is used to wind the current layer of coil onto the winding shaft.

[0077] Here, the external tension refers to the external tension acting on the unit width of the coil when the current layer of coil is rolled up. In implementation, the external tension of the current layer of coil is obtained in real time according to the winding diameter of the current layer of coil. The external tension is used to roll the current layer of coil onto the winding shaft.

[0078] For example, according to a preset corresponding relationship, a target first external tension matching the winding diameter of the current layer of coil is determined from a plurality of first external tensions, and the target first external tension is used as the external tension of the current layer of coil. The corresponding relationship represents the relationship between at least one first external tension and the corresponding winding diameter. In implementation, the corresponding relationship between the first external tension and the winding diameter can be established in advance, so that the target first external tension matching the winding diameter of the current layer of coil can be obtained through the corresponding relationship. In implementation, those skilled in the art can independently set the corresponding relationship between the first external tension and the winding diameter according to actual needs, and the embodiment of the present disclosure is not limited. For example, according to the first external tension of the j-th layer of coil, the first external tension of the j-1 layer of coil before is reversed, wherein the first external tension of the j-th layer of coil can be a set value, and in implementation, the j-th layer of coil can be the outermost layer of coil. Each first external tension is used to minimize the interlayer circumferential slip between the inner layer coils, that is, no interlayer circumferential slip occurs, or the degree of interlayer circumferential slip is minimized.

[0079] For another example, according to a preset mapping relationship, based on the winding diameter of the current layer of coil, the external tension of the current layer of coil is calculated. The mapping relationship represents the relationship between the fitting information corresponding to the coil and the winding diameter, and the fitting information corresponding to the coil is obtained by fitting at least one first external tension and the corresponding winding diameter.

[0080] In some embodiments, the step S12 includes step S121, wherein:

[0081] Step S121 : determining the external tension of the current layer of coiled material based on the winding diameter of the current layer of coiled material and the first configuration information of the coiled material.

[0082] Here, the first configuration information may include but is not limited to the first external tension of the first j layers of coils and the corresponding winding diameter (i.e., the aforementioned corresponding relationship), the fitting information corresponding to the coils, etc. Among them, each first external tension is used to minimize the interlayer circumferential slip between the corresponding layers of coils. The fitting information corresponding to the coils is obtained by fitting at least one first external tension and the corresponding winding diameter. In some embodiments, the computer device that determines the first configuration information of the coils and the computer device that executes the tension determination method may be the same or different. For example, the computer device that determines the first configuration information of the coils may be a host computer, and the computer device that executes the tension determination method may be a slave computer.

[0083] In some implementations, the step S121 includes step S1211 or step S1212, wherein:

[0084] Step S1211: When the first configuration information includes the first external tension of the first j layers of coils and the corresponding winding diameter, determine the target first external tension that matches the winding diameter of the current layer of coil from the first external tensions of the first j layers of coils, and determine the external tension of the current layer of coil based on the target first external tension.

[0085] Here, the first external tension of the first j-1 layers of coils is determined based on the first external tension of the jth layer of coils, and j-1 is a positive integer. The winding diameter of each layer corresponds to a different first external tension. In some embodiments, due to the influence of factors such as the environment and equipment, the winding diameter of the current layer of coils actually detected is not necessarily the ideal winding diameter (i.e., the winding diameter calculated according to the above formula 1-1), so the number of target first external tensions can be at least one. For example, if the winding diameter of the current layer of coils is 100 millimeters (Millimeter, mm), and the winding diameter corresponding to a certain first external tension is also 100 mm, then the first external tension is used as the target first external tension. For another example, if the winding diameter of the current layer of coils is 105 millimeters (Millimeter, mm), the winding diameter corresponding to a certain first external tension is 100 mm, and the winding diameter corresponding to another first external tension is 110 mm, then the two first external tensions are respectively used as a target first external tension.

[0086] In implementation, when the number of the target first external tension is one first external tension, the target first external tension is used as the external tension of the current layer of coiled material. For example, if the target first external tension is 123.2N (Newton), then 123.2N is used as the external tension of the current layer of coiled material.

[0087] In the case where the number of target first external tensions is at least two first external tensions, the mean / variance / mean square error of the at least two first external tensions, weighting of the mean / variance / mean square error, etc. can be used as the external tension of the current layer of coiled material. For example, if one target first external tension is 123.2N and the other target first external tension is 123.3N, the mean of the two target first external tensions can be used as the external tension of the current layer of coiled material, that is, the external tension of the current layer of coiled material is 123.25N.

[0088] Step S1212: when the first configuration information includes fitting information corresponding to the coil, determine the external tension of the current layer of coil based on the fitting information corresponding to the coil and the winding diameter of the current layer of coil.

[0089] Here, the fitting information includes the fitting coefficient corresponding to the winding diameter. Different coils correspond to different fitting information. During implementation, a preset fitting algorithm can be used to fit the first external tension of at least one layer of coil and the corresponding winding diameter to obtain the fitting information. The fitting algorithm can be any suitable algorithm, such as a linear fitting algorithm, a curve fitting algorithm, etc. In some embodiments, a multi-order (e.g., third-order, fifth-order, etc.) curve fitting can be performed on the first external tension of the target layer coil and the corresponding winding diameter to obtain the fitting information. The target layer coil can include at least one layer of the first j layers of coils. For example, the target layer coil can be the first j layers of coils, or it can be a part of the first j layers of coils.

[0090] In some embodiments, the external tension corresponding to the winding diameter of the current layer of coiled material is calculated in real time according to a preset mapping relationship, wherein the mapping relationship represents the relationship between the fitting information corresponding to the coiled material and the winding diameter.

[0091] In some implementations, the mapping relationship may be expressed by the following formula (1-2), namely:

[0092] T=AR 5 +BR 4 +CR 3 +DR 2 +ER+F(1-2);

[0093] Wherein, T represents the external tension, R is the winding diameter, and A~F are fitting coefficients.

[0094] During implementation, the fitting information corresponding to the coil and the winding diameter of the current layer of coil are input into the above formula (1-2), and the external tension of the current layer of coil can be obtained.

[0095] In the disclosed embodiments, on the one hand, the external tension of the current layer of coil is determined according to the first external tension of the previous j layers of coil, and since the first external tension of the previous j layers of coil and the corresponding winding diameter are pre-stored, the time for determining the external tension of the current layer of coil is shortened and the response speed of the system is improved. On the other hand, the external tension of the current layer of coil is calculated in real time according to the fitting information and the winding diameter of the current layer of coil. In this way, not only the accuracy and smoothness of the external tension are improved, but also the data storage amount is reduced compared to storing the first external tension of the previous j layers of coil and the corresponding winding diameter, which alleviates the storage pressure of the equipment. At the same time, the errors caused by the influence of environmental factors, equipment and the like can be corrected, so that the calculation result of the external tension is more accurate.

[0096] During implementation, the external tension of the current layer of coiled material can be transmitted to the driving device, so that the driving device drives the winding shaft to wind up the current layer of coiled material.

[0097] In the disclosed embodiment, the external tension of the winding is determined in real time by the winding coil diameter, which reduces the degree of interlayer slippage of the inner layer of the coil compared to the constant tension mode, thereby reducing the possibility of the barrel phenomenon, thereby reducing the waste of the coil and improving the reliability of the product.

[0098] Figure 2A A schematic diagram of a tension determination method provided in an embodiment of the present disclosure is provided, which is applied to a computer device (eg, a lower computer). Figure 2A As shown, the method includes steps S21 to S23, wherein:

[0099] Step S21: Determine the first external tension of the first j-1 layers of coiled material based on the first external tension of the j-th layer of coiled material.

[0100] Here, j-1 is a positive integer. The first external tension of the j-th layer of coil may be a set value, and the j-th layer of coil may be the outermost layer of coil, that is, the j-th layer is the largest winding layer.

[0101] In some embodiments, the first external tension of the j-1 layer of coil can be inferred based on the first external tension of the j-1 layer of coil, and then the first external tension of the j-2 layer of coil can be inferred based on the first external tension of the j-1 layer to the j-2 layer of coil, and so on, until the first external tension of the first layer of coil is obtained.

[0102] In the actual winding process, the driving device (for example, a motor) drives the winding shaft to rotate, and the first layer of coil is generally connected to the winding shaft by adhesion. The first layer of coil pulls the second layer of coil to be wound, the second layer of coil pulls the third layer of coil to be wound, and so on, until the outermost layer of coil is pulled to complete the winding. In practice, when the driving force (i.e., external tension) of the i-th layer of coil (any layer of coil in the first j-1 layers) on the j-th layer of coil is insufficient to pull the j-th layer of coil, the interlayer circumferential static friction on the i-th layer of coil (i.e., the static friction generated by the inner layer of coil in the circumferential direction) will increase. When the interlayer circumferential static friction on the i-th layer of coil exceeds the maximum interlayer circumferential static friction, interlayer slippage will occur, causing the end faces of the rolled material to be uneven. Therefore, the interlayer circumferential static friction of the i-th layer of coil can be determined according to the first external tension of the i+1th to j-th layers of coil, and the first external tension of the i-th layer of coil can be determined according to the interlayer circumferential static friction of the i-th layer of coil and the interlayer circumferential maximum static friction of the i-th layer of coil. That is, the interlayer circumferential static friction of the i-th layer of coil is not greater than the interlayer circumferential maximum static friction of the i-th layer of coil, or the deviation between the interlayer circumferential static friction of the i-th layer of coil and the interlayer circumferential maximum static friction of the i-th layer of coil is the smallest.

[0103] In some embodiments, the step S21 includes steps S211 to S212, wherein:

[0104] Step S211: determining the first external tension of the j-1th layer of coiled material based on the first external tension of the jth layer of coiled material.

[0105] Here, the first external tension of the j-1 layer of coil is inferred from the first external tension of the j-1 layer of coil. In implementation, the interlayer circumferential static friction of the j-1 layer of coil is first determined based on the first external tension of the j-1 layer of coil, and then the first external tension of the j-1 layer of coil is determined based on the interlayer circumferential static friction of the j-1 layer of coil and the interlayer circumferential maximum static friction of the j-1 layer of coil.

[0106] In some embodiments, step S211 includes steps S221 to S222, wherein:

[0107] Step S221: determining the interlayer circumferential static friction force of the j-1th layer of coiled material based on the first external tension of the jth layer of coiled material.

[0108] Here, the first external tension required for the j-th layer of coil should be greater than the interlayer circumferential static friction of the j-1-th layer of coil. When winding the j-th layer of coil, the driving force required for the j-1-th layer of coil to pull the j-th layer of coil (i.e., the first external tension of the j-th layer of coil) should not be less than the sum of the internal tension of the j-1-th layer of coil and the interlayer circumferential static friction of the j-2-th layer of coil. The internal tension represents the actual tension borne by the inner layer of coil when winding the j-th layer of coil.

[0109] Figure 2B A schematic diagram of the external tension required for the i-th layer of coil to pull the j-th layer of coil provided in an embodiment of the present disclosure, such as Figure 2B As shown in the figure, during the winding process, when the j-th layer of coil is rolled up, the external tension required for the i-th layer of coil to pull the j-th layer of coil should be the internal tension T of the i-th layer of coil. i,j The interlayer circumferential static friction force f between the i-th layer of coil i,j sum.

[0110] In some embodiments, step S221 includes steps S231 to S232, wherein:

[0111] Step S231: determining a second external tension of the j-1th layer of coil based on the first external tension of the j-th layer of coil, the winding diameter of the j-th layer of coil, and the winding diameter of the j-1th layer of coil.

[0112] Here, according to the relationship between the winding diameters of the various layers of coils, the first external tension of the j-th layer of coil can be converted into the second external tension of the i-th layer of coil.

[0113] In some implementations, the step S231 includes steps S2311 to S2312, wherein:

[0114] Step S2311, determining a first ratio between the winding diameter of the j-th layer of coil and the winding diameter of the j-1-th layer of coil.

[0115] Here, the first ratio is the ratio between the winding diameter of the j-th layer of coil and the winding diameter of the j-1-th layer of coil. In implementation, the first ratio α1 can be obtained by the following formula (2-1), that is:

[0116]

[0117] Among them, R i is the winding diameter of the i-th layer of coil, R j is the winding diameter of the j-th layer of coil. In implementation, R can be obtained according to the above formula (1-1): i and R j , i is a positive integer not greater than j-1.

[0118] Step S2312: Determine the second external tension of the j-1th layer of coiled material based on the first ratio and the first external tension of the jth layer of coiled material.

[0119] Here, the second external tension of the j-1 layer of coil can be the first product, the weighted value of the first product, etc. The first product refers to the product of the first ratio and the first external tension of the j-1 layer of coil. For example, the first product is used as the second external tension of the j-1 layer of coil.

[0120] In some embodiments, the second external tension T of the i-th layer of coil can be obtained by the following formula (2-2): i2 ,Right now:

[0121] T i2 =T j *α1(2-2);

[0122] Among them, α1 is the first ratio, T j is the first external tension of the j-th layer of coil, and i is a positive integer not greater than j-1.

[0123] Step S232: determining the interlayer circumferential static friction force of the j-1th layer of coil based on the second external tension of the j-1th layer of coil and the internal tension of the j-1th layer of coil.

[0124] Here, the interlayer circumferential static friction of the j-1 layer of coil can be the third difference, the weighted value of the third difference, etc. The third difference refers to the difference between the second external tension of the j-1 layer of coil and the internal tension of the j-1 layer of coil. For example, the third difference is used as the interlayer circumferential static friction of the j-1 layer of coil.

[0125] In some embodiments, the interlayer circumferential static friction force f of the i-th layer of coil can be obtained by the following formula (2-3): i,j ,Right now:

[0126] f i,j =T i2 -T i,j (2-3);

[0127] Among them, T i2 is the second external tension of the i-th layer of coil, T i,j is the internal tension of the i-th layer of coil, and i is a positive integer not greater than j-1.

[0128] In some embodiments, step S232 includes steps S241 to S243, wherein:

[0129] Step S241: Determine the internal tension of the j-1th layer of coil based on the circumferential stress of the j-1th layer of coil.

[0130] Here, the circumferential stress of the i-th layer of coil represents the stress borne by the i-th layer of coil in the circumferential direction. In implementation, the factors affecting the circumferential stress of the i-th layer of coil may include, but are not limited to, the first external tension when winding the i-th layer of coil, the in-coil circumferential stress generated by each layer of coil after the i-th layer of coil on the i-th layer of coil, etc.

[0131] In the actual winding process, since the coil is in a stretched state due to the external tension, a radial inward pressure will be generated on the inner coil that has been wound. As the number of winding layers increases, the pressure on the inner coil will continue to accumulate. In this way, the inner tension of the inner coil is not equal to the external tension applied during winding, but it will continue to decrease as the number of winding layers increases. After the jth layer of coil is wound, the jth layer of coil will generate a uniform radial pressure inward, which will generate circumferential stress inside the coil for the first j-1 layers of coil.

[0132] Figure 2C A schematic diagram of the internal tension of a first layer of coiled material provided in an embodiment of the present disclosure, such as Figure 2C As shown in the figure, as the winding diameter R increases, the internal tension T of the first layer of coil increases. 1,n It will continue to decrease, where n represents the total number of layers of winding. When the winding diameter R is close to 500mm, the internal tension of the first layer of coil is 0. If the winding diameter continues to increase, the internal tension of the first layer of coil will be less than 0, and the coil will be wrinkled.

[0133] The internal tension of the j-1th coil may be the product of the circumferential stress of the j-1th coil and the thickness of the coil, or the product may be weighted, etc. For example, the internal tension of the j-1th coil is the product of the circumferential stress of the j-1th coil and the thickness of the coil.

[0134] In some embodiments, the internal tension T of the i-th layer of coil can be obtained by the following formula (2-4): i,j ,Right now:

[0135] T i,j =σ θ(i,j) *h (2-4);

[0136] Among them, σ θ(i,j) is the circumferential stress of the i-th layer of coil, h is the thickness of the coil, and i is a positive integer not greater than j-1.

[0137] In some embodiments, step S241 includes steps S251 to S253, wherein:

[0138] Step S251: Determine the circumferential stress of the j-1th layer of coil based on the in-coil circumferential stress of the j-1th layer of coil.

[0139] Here, the circumferential stress in the coil refers to the stress in the circumferential direction of a certain inner layer of coil during or after the winding process. In implementation, the circumferential stress in the coil is independent of the thickness of the coil. According to the superposition principle, the first external tension of the i-th layer of coil, the circumferential stress in the coil generated by each layer of coil after the i-th layer of coil, etc., will all affect the circumferential stress of the i-th layer of coil. In implementation, the circumferential stress of the i-th layer of coil can be the first sum value, the weighted value of the first sum value, etc. Among them, the first sum value is the sum of the average external tension of the i-th layer of coil and the circumferential stress in the coil generated by each layer of coil after the i-th layer of coil on the i-th layer of coil, and the average external tension of the i-th layer of coil is the ratio between the first external tension of the i-th layer of coil and the thickness of the coil. For example, the circumferential stress of the i-th layer of coil can be the first sum value.

[0140] In some embodiments, the circumferential stress σ of the i-th layer of coil can be obtained by the following formula (2-5): θ(i,j) ,Right now:

[0141]

[0142] Among them, T i is the first external tension of the i-th layer of coil, h is the thickness of the coil, σ′ θ(i,k) is the in-coil circumferential stress generated by the k-th coil on the i-th coil, where i is a positive integer not greater than j-1.

[0143] In some implementations, the step S251 includes steps S2511 to S2512, wherein:

[0144] Step S2511, determining the in-roll circumferential stress of the j-1th layer of coil based on the first external tension of the j-1th layer of coil, the winding diameter of the j-1th layer of coil, and the winding diameter of the jth layer of coil.

[0145] Here, during the winding process, each time a layer of coil is wound, the layer of coil will generate internal pressure on each inner layer of coil that has been wound, and this internal pressure causes the internal tension of each layer to decrease.

[0146] Figure 2D A schematic diagram of a coil winding process provided by an embodiment of the present disclosure, such as Figure 2D As shown in the figure, when the coil is wound to the jth layer, the winding diameter of the coil is R j , the jth layer of coil will produce a uniform radial pressure P inward in the radial direction j , the uniform radial pressure P j The i-th layer of coil will generate a circumferential stress σ′ θ(i,j) and radial stress σ′ in the roll r(i,j)The radial stress inside the coil refers to the stress in the radial direction of each layer inside the coil during or after the coiling process. During the coiling process, each layer of coiled material will cause an inward pressure on any layer of coiled material that has been wound before.

[0147] In some embodiments, according to the principles of elastic mechanics, the external tension of the rolled coil can be treated as an axisymmetric plane strain problem. j is generated by the first external tension of the coiled material when winding the jth layer, then the uniform radial pressure P j The circumferential stress σ′ generated in the i-th layer of coil θ(i,j) It can be expressed by the following formula (2-6):

[0148]

[0149] Among them, T j is the first external tension of the j-th layer of coil, R j is the winding diameter of the j-th layer of coil, R i is the winding diameter of the i-th layer of coil, λ is the influence factor, and i is a positive integer not greater than j-1. The influence factor λ is determined based on the Poisson's ratio corresponding to the coil and the initial winding diameter of the winding shaft. Different coils correspond to different Poisson's ratios.

[0150] In some implementations, the impact factor λ may be determined by the following formula (2-7), namely:

[0151] λ=(1-2μ)×R0 2 (2-7);

[0152] Among them, μ is the Poisson's ratio corresponding to the coil, and R0 is the initial winding diameter of the winding shaft.

[0153] In practice, the circumferential stress σ′ of the j-1 layer of coil can be obtained according to the above formula (2-6): θ(j-1,j) .

[0154] Step S2512: Determine the circumferential stress of the j-1th layer of coil based on the second external tension of the j-1th layer of coil and the circumferential stress within the coil of the j-1th layer of coil.

[0155] Here, the factors affecting the circumferential stress of the j-1 layer of coil may include but are not limited to the first external tension of the j-1 layer of coil, the in-coil circumferential stress generated by the j-1 layer of coil on the j-1 layer of coil, etc. In implementation, the circumferential stress σ of the j-1 layer of coil can be obtained according to the above formula (2-5): θ(j-1,j) .

[0156] Step S252: determine the product of the circumferential stress of the j-1th layer of coil and the thickness of the coil.

[0157] Here, the thicknesses of different coils may be the same or different.

[0158] Step S253: Determine the internal tension of the j-1th layer of coil based on the product.

[0159] Here, the internal tension of the j-1 layer of coiled material can be the product, the weighted product of the product, etc. For example, the internal tension of the j-1 layer of coiled material is the product. In implementation, the internal tension T of the j-1 layer of coiled material can be obtained according to the above formula (2-4): j-1,j In some embodiments, since the thickness of the coil is small, according to the above formula (2-5) and formula (2-6), the above formula (2-4) is simplified into the following formula (2-8) by integration, namely:

[0160]

[0161] Among them, T i is the external tension of the i-th layer of coil, R i is the winding diameter of the i-th layer of coil, R j is the winding diameter of the j-th layer of coil, h is the thickness of the coil, λ is the influencing factor, and i is a positive integer not greater than j-1.

[0162] Step S242: Determine a first difference between a second external tension of the j-1th layer of coil and an internal tension of the j-1th layer of coil.

[0163] Here, the first difference is the difference between the second external tension of the j-1th layer of the coil and the internal tension of the j-1th layer of the coil.

[0164] Step S243: Determine the interlayer circumferential static friction force of the j-1th layer of coiled material based on the first difference.

[0165] Here, the interlayer circumferential static friction force of the j-1th layer of coiled material can be the first difference, weighted first difference, etc. For example, the first difference is used as the interlayer circumferential static friction force of the j-1th layer of coiled material. In implementation, the interlayer circumferential static friction force f of the j-1th layer of coiled material can be obtained according to the above formula (2-3): j-1,j .

[0166] Step S222: determining a first external tension of the j-1th layer of coiled material based on the interlayer circumferential static friction of the j-1th layer of coiled material and the interlayer circumferential maximum static friction of the j-1th layer of coiled material.

[0167] Here, the first external tension of the j-1th layer of coil can be determined based on the second difference of the j-1th layer of coil, wherein the second difference is the difference between the maximum circumferential static friction between the layers of the j-1th layer of coil and the circumferential static friction between the layers of the j-1th layer of coil. In implementation, the second difference should be no less than 0, or the second difference is close to 0.

[0168] In some embodiments, the second difference F of the i-th layer of the coil can be expressed by the following formula (2-9): i ,Right now:

[0169] F i =F imax -f i,j (2-9);

[0170] Among them, F imax is the maximum circumferential static friction between the layers of the i-th coil, f i,j is the interlayer circumferential static friction force on the i-th layer of coil when the j-th layer of coil is rolled up, and i is a positive integer not greater than j-1.

[0171] In some embodiments, the step S222 includes steps S2221 to S2222, wherein:

[0172] Step S2221: Determine a second difference between the maximum circumferential static friction force between layers of the j-1th layer of coil and the circumferential static friction force between layers of the j-1th layer of coil.

[0173] Here, the second difference is the difference between the maximum circumferential static friction between the layers of the j-1th layer of coil and the circumferential static friction between the layers of the j-1th layer of coil. In implementation, the second difference F of the j-1th layer of coil can be determined according to the above formula (2-9): j-1 .

[0174] In some embodiments, the method further comprises step S26, wherein:

[0175] Step S26: determining the maximum circumferential static friction force between layers of the j-1th layer of coiled material based on the interlayer pressure of the j-1th layer of coiled material.

[0176] Here, the maximum circumferential static friction force between layers of the j-1th layer of coil can be the second product, the weighted second product, etc. The second product is the product of the interlayer pressure of the j-1th layer of coil and the static friction coefficient of the coil. For example, the second product is used as the maximum circumferential static friction force between layers of the j-1th layer of coil.

[0177] In some embodiments, the maximum circumferential static friction force F between layers of the i-th coil can be determined according to the following formula (2-10): imax ,Right now:

[0178] F imax =μ*N (i,j) (2-10);

[0179] Where μ is the static friction coefficient of the coil, N (i,j) is the interlayer pressure on the i-th layer of coil when the j-th layer of coil is rolled up, and i is a positive integer not greater than j-1.

[0180] In some embodiments, step S26 includes steps S261 to S262, wherein:

[0181] Step S261: determining the interlayer pressure of the j-1th layer of coil based on the first external tension of the j-th layer of coil and the winding diameter of the j-1th layer of coil to the winding diameter of the j-1th layer of coil.

[0182] Here, the interlayer pressure of the j-1 layer of coil refers to the pressure acting on the j-1 layer of coil after the j layer of coil is rolled up. In practice, according to the derivation method of the internal tension of the i layer of coil, it can be obtained that the interlayer pressure acting on the i layer of coil after the j layer of coil is rolled up should be the sum of the pressures of each layer of coil after the i layer of coil on the i layer of coil. In practice, the interlayer pressure of the i layer of coil can be determined according to the following formula (2-11), that is:

[0183]

[0184] Among them, R i is the winding diameter of the i-th layer of coil, R j is the winding diameter of the j-th layer of coil, h is the thickness of the coil, λ is the influencing factor, and i is a positive integer not greater than j-1.

[0185] In practice, the interlayer pressure N of the j-1th layer of coil can be obtained according to the above formula (2-11): (j-1,j) .

[0186] In the actual winding process, since the coil is in a stretched state due to the external tension, a radial inward pressure will be generated on the inner layer of the coil that has been wound. As the number of winding layers increases, the pressure on the inner layer of the coil will continue to accumulate. Figure 2E A schematic diagram of the interlayer pressure of a first layer of coiled material provided in an embodiment of the present disclosure, such as Figure 2E As shown in the figure, as the winding diameter R increases, the interlayer pressure N of the first layer of coil increases. 1,n It will continue to decrease, where n represents the total number of layers of winding, and the interlayer pressure of the first layer of coil is N 1,n It is the largest near the center of the winding shaft, and gradually decreases along the increasing radius of the roll, even to 0. The decreasing trend is larger in the inner layer of the roll and smaller in the outer layer of the roll, and gradually tends to be stable as the radius of the roll increases.

[0187] Step S262: Determine the maximum circumferential static friction force between layers of the j-1th layer of coil based on the static friction coefficient of the coil and the interlayer pressure of the j-1th layer of coil.

[0188] Here, different coils correspond to different or the same static friction coefficients. In practice, the maximum circumferential static friction F between layers of the j-1 layer of coil can be obtained according to the above formula (2-10): j-1 .

[0189] Step S2222: Determine the first external tension of the j-1th layer of coil based on the second difference.

[0190] Here, the second difference should be not less than 0, or close to 0. In practice, by combining the above formulas (2-1) to (2-11), the second difference F of the i-th layer of coil can be expressed by the following formula (2-12): i ,Right now:

[0191]

[0192] Among them, T j is the first external tension of the j-th layer of coil, T i is the first external tension of the i-th layer of coil, R i is the winding diameter of the i-th layer of coil, R j is the winding diameter of the j-th layer of coil, h is the thickness of the coil, λ is the influencing factor, and i is a positive integer not greater than j-1.

[0193] In implementation, for any layer of the first j-1 layers of coiled material, if the second difference of the layer is not less than 0, no interlayer circumferential slippage will occur. On the contrary, if the second difference of the layer is less than 0, interlayer circumferential slippage will occur. Then, according to F i is not less than 0, and the first external tension T of the i-th layer of coil is obtained. i , so that the i-th layer of coil does not have interlayer circumferential slip. Alternatively, F i is close to 0, and the first external tension T of the i-th layer of coil is obtained. i , so as to minimize the interlayer circumferential slippage of the i-th layer of coil, thereby reducing the possibility of barrel phenomenon.

[0194] Step S212: for the i-th layer of the first j-2 layers of coils, determine the first external tension of the i-th layer of coil based on the first external tension of the i+1-th layer of coil to the first external tension of the j-th layer of coil; wherein i is a positive integer not greater than j-2.

[0195] Here, the method for determining the first external tension of the i-th layer of coil is similar to the method for determining the first external tension of the j-1-th layer of coil. When implementing, reference may be made to the specific implementation of the aforementioned step S211.

[0196] Step S22, obtaining the winding diameter of the current layer of coiled material wound by the winding shaft.

[0197] Here, the above step S22 corresponds to the above step S11, and when implementing it, reference may be made to the specific implementation of the above step S11.

[0198] Step S23, determining the external tension of the current layer of coil based on the winding diameter of the current layer of coil and the first external tension of the previous j layers of coil; wherein the external tension of the current layer of coil is used to wind the current layer of coil onto the winding shaft.

[0199] Here, the above step S23 corresponds to the above step S112, and when implementing it, reference may be made to the specific implementation of the above step S112.

[0200] In the disclosed embodiment, the external tension of the current layer of coil is determined in real time based on the predetermined first external tension of the previous j layers of coil and the winding diameter of the current layer of coil. On the one hand, compared with the constant tension mode, the degree of interlayer slippage of the inner layer of coil is reduced, thereby reducing the possibility of the barrel phenomenon, thereby reducing the waste of coils and improving the reliability of the product; on the other hand, the determination time of the external tension is shortened while the accuracy of the external tension is improved.

[0201] Figure 3A A schematic diagram of a tension determination method according to an embodiment of the present disclosure is provided, which is applied to a computer device (eg, a host computer). Figure 3A As shown, the method includes steps S31 to S33, wherein:

[0202] Step S31, displaying a first interface; wherein the first interface includes a tension determination control and a first display area.

[0203] Here, the first interface is an interactive interface for configuring the coil and displaying information. The first interface may include, but is not limited to, an area where configuration operations can be performed, operation controls, etc. Among them, the area where configuration operations can be performed may include, but is not limited to, at least one of an area for configuring tension and an area for fitting tension, etc. During implementation, those skilled in the art may determine the number of areas where configuration operations can be performed in the first interface, and the specific layout of each area where configuration operations can be performed in the first interface according to actual conditions, and the embodiments of the present disclosure are not limited thereto.

[0204] The first display area is at least used to display a first external tension of winding at least one layer of coiled material.

[0205] The operation control may be any suitable operable control. For example, a tension management control, a tension determination control, an information display control, a tension output control, a list, a coil management control, etc. Among them, the tension management control is used to display the first interface. The tension determination control is used to display the first external tension of the first j layers of coils. The information display control is used to display fitting information, which is obtained by fitting the first external tension of the first j layers of coils and the corresponding winding diameter. The tension output control is used to output the first configuration information. The list is used to display the first external tension of the first j layers of coils and the corresponding winding diameter. In some embodiments, the list is located in the first display area. The coil management control is used to display the coil management interface, wherein the coil management interface is used to manage the second configuration information of different coils. During implementation, those skilled in the art may determine the number of operation controls and the position of each operation control in the first interface according to actual conditions, and the embodiments of the present disclosure are not limited thereto.

[0206] The first interface can be displayed on any suitable computer device with an interface interaction function, for example, the first interface can be displayed on a laptop, a mobile phone, a tablet computer, a PDA, a personal digital assistant, a digital television, or a desktop computer. In implementation, the computer device that displays the first interface and the computer device that executes the tension determination method can be the same or different, which is not limited here. For example, the computer device that executes the tension determination method can be a lower computer, and the computer device that displays the first interface can be a laptop computer. The first interface can be an interactive interface of a client running on the laptop computer, or it can be a web page displayed in a browser running on the laptop computer. For another example, the computer device that executes the tension determination method and the computer device that displays the first interface are both upper computers.

[0207] Figure 3B A schematic diagram of a first interface provided by an embodiment of the present disclosure is shown as follows: Figure 3B As shown, the first interface 30 includes a configuration area 301, a tension management control 302, and a coil management control 303. The configuration area 301 includes at least a first display area 304 and a tension configuration area 305, and the tension configuration area 305 includes a coil input control 3051 and a tension determination control 3052. The coil input control 3051 is used to input the name of the coil, and the tension determination control 3052 is used to display the first external tension of the first j layers of coil and the corresponding winding diameter in the first display area 304. The tension management control 302 is used to display at least the first display area 304 and the tension configuration area 305 in the configuration area 301. The coil management control 303 is used to display the coil management interface in the configuration area 301.

[0208] Step S32, in response to the triggering operation of the tension determination control, displaying the first external tension of winding at least one layer of coiled material in the first display area; wherein each of the first external tensions is determined based on the second configuration information of the coiled material, and each of the first external tensions is used to cooperate with the winding diameter of the current layer of coiled material to determine the external tension for winding the current layer of coiled material onto the winding shaft.

[0209] Here, the triggering operation of the tension determination control may be any suitable triggering operation, such as a gesture, voice, etc. For example, clicking the tension determination control. The second configuration information may include, but is not limited to, identification information of the coil, the first external tension of the j-th layer of coil, the initial coil diameter of the coil, the static friction coefficient of the coil, the Poisson's ratio of the coil, the thickness of the coil, etc.

[0210] Each first external tension may be determined by a host computer or other computer device. In some embodiments, the host computer determines the first external tension of each layer of coiled material based on the second configuration information of the coiled material in response to a trigger operation on the tension determination control. The specific process of determining each first external tension may refer to the specific implementation of the aforementioned step S21. The method of determining the external tension of the current layer of coiled material may refer to the specific implementation of the aforementioned step S12.

[0211] In the embodiments disclosed herein, on the one hand, the optimal external tension of each layer of coil (i.e., the first external tension) is determined in real time through a visual interface, which not only simplifies the operating steps but also improves the accuracy of the optimal external tension and lowers the operating threshold; on the other hand, the external tension of the current layer of coil is determined in real time based on the optimal external tension of each layer of coil and the winding diameter of the current layer of coil. Compared with the constant tension mode, the degree of interlayer slippage of the inner layer of coil is reduced, thereby reducing the possibility of the barrel phenomenon, thereby reducing the waste of coils and improving the reliability of the product.

[0212] In some embodiments, the first interface further includes a roll material management control, and the method further includes steps S33 to S34, wherein:

[0213] Step S33: in response to the triggering operation on the roll material management control, displaying a roll material management interface; wherein the roll material management interface includes a roll material configuration control and a second display area.

[0214] Here, the triggering operation for the roll material management control may be any suitable triggering operation, such as gesture, voice, etc. For example, click Figure 3B The roll material management control 303 in.

[0215] The coil management interface is an interactive interface for configuring coil information and displaying information. The coil management interface may include but is not limited to areas where configuration operations can be performed, operation controls, etc. Among them, the area where configuration operations can be performed may include but is not limited to at least one of an area for adding new coils, an area for querying or editing existing coils, etc. The area for adding new coils is mainly used as an area for configuring the relevant attributes of the new coils. The operation of querying existing coils may include but is not limited to at least one of searching for a coil based on keywords, directly viewing a coil, etc. The editing operation of existing coils includes but is not limited to at least one of editing a coil, deleting a coil, etc. During implementation, those skilled in the art may determine the number of areas where configuration operations can be performed in the coil management interface, and the specific layout of each area where configuration operations can be performed in the coil management interface according to actual conditions, and the embodiments of the present disclosure are not limited thereto.

[0216] The second display area is used to display second configuration information of the coil.

[0217] The operation control may be any suitable control that can be operated. For example, a new add control (e.g., single add, batch add, etc.), a keyword input control, a search control, a page turn control, a delete control, a save control, an edit control, a list, etc. During implementation, those skilled in the art may determine the number of operation controls and the position of each operation control in the coil management interface according to actual conditions, and the embodiments of the present disclosure do not limit this. The coil configuration control may include, but is not limited to, a new add control, an edit control, etc.

[0218] The roll material management interface may be located in the first interface, or may be independent of the first interface (eg, a pop-up window, a new window, etc.).

[0219] Figure 3C A schematic diagram of a first interface provided by an embodiment of the present disclosure is shown as follows: Figure 3CAs shown, the first interface includes a configuration area 301, a tension management control 302, and a coil management control 303. The configuration area 301 displays a coil management interface, which includes a new control 311, an edit control 312, a delete control 313, a save control 314, and a second display area 315. The new control 311 is used to add configuration information of a coil. The edit control 312 is used to edit the configuration information of a certain coil in the list 315. The delete control 313 is used to delete the configuration information of at least one coil in the list 315. The save control 314 is used to save the configuration information of each coil in the list 315. The second display area 315 is used to display the configuration information of the existing coil, which can be displayed in a list when implemented. When implemented, the list includes at least one row and at least one column, each row is used to represent an existing coil, and each column represents a certain configuration information of the existing coil, such as the name of the coil, the Poisson's ratio of the coil, etc. In some implementations, the list further includes a page turning control and a scrolling control. The page turning control is used to turn pages of the list, and the scrolling control is used to scroll the contents of the list.

[0220] Step S34: in response to receiving a trigger operation on the coil configuration control in the coil management interface, obtaining second configuration information of the coil, and displaying the second configuration information of the coil in the second display area.

[0221] Here, the coil configuration control may include but is not limited to a new control, an edit control, etc. In some embodiments, in response to Figure 3C The coil configuration interface is displayed by triggering the new control 311 in the coil management interface. The coil configuration interface can be located in the coil management interface or can be independent of the coil management interface (for example, a pop-up window, a new window, etc.). The coil configuration interface is an interface for configuring the attribute information of the coil. The attribute information of the coil may include but is not limited to the name, the first external tension of the j-th layer of the coil, the initial winding diameter of the winding shaft, the static friction coefficient of the coil, the Poisson's ratio of the coil, the thickness of the coil, etc. In implementation, the configuration control of the corresponding coil attribute can be set in the coil configuration interface, and the configuration information of the corresponding coil is obtained through the configuration control of the coil attribute. For example, when the coil configuration interface includes a coil name control, in response to the input on the coil name control, the name information of the coil is obtained, wherein the coil name control can be any control that can realize the function of configuring the name of the coil, such as an input box, an edit box, a drop-down box, etc. The user can independently set the implementation method of the coil name control according to actual needs, and the embodiment of the present disclosure is not limited.

[0222] Figure 3D A schematic diagram of a coil configuration interface provided by an embodiment of the present disclosure, such as Figure 3DAs shown, the coil configuration interface 32 includes a coil name control 321, an external tension control 322 for setting a layer of coil, a winding diameter control 323 for setting a layer of coil, an initial winding diameter control 324, a static friction coefficient control 325, a Poisson's ratio control 326, and a thickness control 327.

[0223] In some embodiments, in response to Figure 3C The trigger operation of the edit control 312 in the display Figure 3D The coil configuration interface 32 is provided, and the target coil ( Figure 3C The property information of a certain roll material in the second display area 315 in FIG.

[0224] In some embodiments, in response to Figure 3C The trigger operation of the save control 314 in the information storage 315 is saved to the information library. The information library is any suitable information library set for storing information, which can be a database, a data table, etc. In some embodiments, the information library can be located in a host computer or in other computer devices, which is not limited in the embodiments of the present disclosure.

[0225] In some implementations, the roll material management interface is open or available only to certain personnel (e.g., managers, developers, etc.). For example, managers can manage various roll materials, such as creating a new roll material, editing, deleting, saving, etc., only after successfully logging in with an account and password.

[0226] In the embodiments of the present disclosure, on the one hand, different coils are configured through a visual interface, which not only simplifies the operating steps but also improves the accuracy of the configuration information and lowers the configuration threshold; on the other hand, the second configuration information of the coil is stored in an information library to provide data support for subsequent calculations of the optimal external tension of the coil.

[0227] In some implementations, the first interface further includes an information display control, and the method further includes step S35, wherein:

[0228] Step S35, in response to the triggering operation of the information display control, displaying the fitting information corresponding to the coil in the first display area; wherein the fitting information corresponding to the coil is obtained by fitting the first external tension of the target layer coil and the corresponding winding diameter, and the target layer coil includes m layers of coil in the at least one layer of coil, and m is a positive integer.

[0229] Here, the trigger operation may be any suitable operation, such as a gesture, voice, etc. For example, clicking on an information display control. In some embodiments, the fitting result may be displayed in the first interface, wherein the fitting result may include but is not limited to a fitting curve (corresponding to the aforementioned mapping relationship), a fitting coefficient (corresponding to the aforementioned fitting information), etc.

[0230] The fitting information corresponding to the coil may be determined by a host computer or other computer devices. In some embodiments, the host computer, in response to a trigger operation on the information display control, fits the first external tension of the target layer coil and the corresponding winding diameter to obtain the fitting information corresponding to the coil.

[0231] In some embodiments, the first display area may also display fitting information. In implementation, the first display area may display the first external tension of at least one layer of coil and the corresponding winding diameter, and / or display fitting information.

[0232] In some embodiments, the first interface may also include a tension output control, through which the first configuration information of the coil is output, wherein the first configuration information may include but is not limited to at least one of the fitting information corresponding to the coil, the first external tension of the first j layers of the coil, and the corresponding winding diameter.

[0233] Figure 3E A schematic diagram of a first interface provided by an embodiment of the present disclosure, such as Figure 3E As shown, the first interface 31 includes a configuration area 301, a tension management control 302, and a coil management control 303. The configuration area 301 includes at least a coil configuration area 305, a first display area 304, and a fitting configuration area 306. The coil configuration area 305 includes a coil input control 3051 and a tension determination control 3052. The fitting configuration area 306 includes at least an information display control 3061 and a tension output control 3062. The first display area 304 includes at least a list 3041 and a fitting result 3042. The information display control 3061 is used to display the fitting result 3042 (for example, fitting coefficient, fitting curve, etc.) in the first display area 304. The list 3041 displays the first external tension of the first j layers of coils and the corresponding winding diameter.

[0234] In the disclosed embodiments, on the one hand, the fitting information corresponding to the coil is generated and displayed through a visual interface, which simplifies the operation steps and improves the accuracy of the fitting information; on the other hand, the fitting information is quickly output through the control to provide data support for the subsequent real-time external tension calculation of the coil.

[0235] Figure 4AA schematic diagram of a tension determination method provided in an embodiment of the present disclosure is provided, which is applied to a computer device (eg, a lower computer). Figure 4A As shown, the method includes steps S41 to S42, wherein:

[0236] Step S41, displaying a second interface; wherein the second interface includes a coil configuration control and a third display area.

[0237] Here, the second interface is an interactive interface for configuring and displaying information on the coil. The second interface may include, but is not limited to, an area where configuration operations can be performed, an operation control, etc. The operation control may be any suitable operable control. For example, a coil configuration control, which is used to import the first configuration information of the coil. The first configuration information of the coil may include, but is not limited to, at least one of at least one winding diameter and a corresponding first external tension, and fitting information corresponding to the coil.

[0238] The third display area is used to display at least the external tension of the current layer of the web determined in real time.

[0239] The second interface can be displayed on any suitable computer device with interface interaction function. In implementation, the computer device displaying the second interface can be the same as or different from the computer device executing the tension determination method and the computer device displaying the first interface, which is not limited here.

[0240] Figure 4B A schematic diagram of a second interface provided by an embodiment of the present disclosure, such as Figure 4B As shown, the second interface 400 includes a coil configuration control 401 and a third display area 402. The first configuration information of the target coil is input through the coil configuration control 401, wherein the first configuration information includes the fitting information corresponding to the target coil and / or the first external tension of the first j layers of the target coil and the corresponding winding diameter. The third display area 402 is used to display the first configuration information.

[0241] Step S42: In response to the triggering operation on the coil configuration control, first configuration information of the coil is obtained.

[0242] Here, the trigger operation may be any suitable operation, such as a gesture, voice, etc. For example, double-clicking the coil configuration control. During implementation, the first configuration information of the coil stored in the information library may be imported into the electronic device.

[0243] In some embodiments, the third display area may also display the first configuration information. In implementation, the third display area may display the first configuration information and / or display the external tension of the current layer of the coil determined in real time.

[0244] Step S43, displaying the external tension of the current layer of coil in the third display area; wherein the external tension of the current layer of coil is determined based on the first configuration information of the coil and the winding diameter of the current layer of coil, and the external tension of the current layer of coil is used to wind the current layer of coil onto a winding shaft.

[0245] Here, the determined external tension of the current layer of coil can be displayed in the third display area. Figure 4B The external tension of the current layer of coiled material is displayed in the third display area 402 of the second interface. The method of determining the external tension of the current layer of coiled material can refer to the specific implementation of the aforementioned step S12.

[0246] In some embodiments, when the control device of the lower computer determines the external tension of the current layer of coil, the external tension of the current layer of coil can be sent to the display device of the lower computer, so that the display device of the lower computer can display the external tension of the current layer of coil in real time.

[0247] In the disclosed embodiment, on the one hand, the configuration information of the coil is imported through a visual interface, which simplifies the operation steps and improves the accuracy of the configuration information; on the other hand, the external tension of the current layer of coil is determined in real time based on the configuration information of the coil and the winding diameter of the current layer of coil. Compared with the constant tension mode, the degree of interlayer slippage of the inner layer of coil is reduced, thereby reducing the possibility of the barrel phenomenon, thereby reducing the waste of coils and improving the reliability of the product.

[0248] The following describes the application of the tension determination method provided in the embodiment of the present disclosure in an actual scenario, taking the determination of the external tension of a pole piece (ie, a coil) as an example.

[0249] In the related technology, as the winding diameter increases, the internal tension of the inner layer will continue to decrease. If the constant tension mode is adopted, when the internal tension of the inner layer is reduced to a certain extent, the maximum circumferential static friction between the inner layers will be less than the circumferential static friction between the layers. At this time, the inner layer pole piece will experience interlayer slippage, and then the barrel phenomenon will occur.

[0250] The disclosed embodiment provides a tension determination method, which calculates the external tension of the current layer of pole pieces in real time according to the first configuration information of the pole piece (for example, the optimal external tension of the previous j layers of pole pieces and the corresponding winding diameter, or the fitting information corresponding to the pole piece) and the winding diameter of the current layer of pole pieces, and the external tension of the current layer of pole pieces is used to wind up the current layer of pole pieces. In this way, compared with the constant tension mode, the degree of interlayer slippage of the inner layer of pole pieces is reduced, thereby reducing the possibility of barrel phenomenon, thereby reducing the waste of pole pieces and improving the reliability of the product.

[0251] The implementation process of the method provided in the embodiment of the present disclosure is explained below from three stages: the cause of the barrel phenomenon, the determination stage, and the use stage.

[0252] (1) Causes of the barrel phenomenon

[0253] According to the principles of elastic mechanics, the conditions for the occurrence of the barrel phenomenon include the existence of circumferential slip between layers and axial interference in the axial direction (that is, there is a component force in the direction of the core axis). The barrel phenomenon will only occur when these two conditions exist at the same time. When there is circumferential slip between layers, the stable structure inside the roll will be destroyed, resulting in shape uncertainty. When circumferential slip between layers occurs, if axial interference occurs in the axial direction at this time, the roll will probabilistically exhibit the barrel phenomenon. If the thickness of the winding pole piece is uneven or the core axis is not level due to the influence of previous processes or mechanical equipment errors, a component force along the axial direction will be generated, namely axial interference.

[0254] Figure 5A A schematic diagram of an axial interference provided by an embodiment of the present disclosure, such as Figure 5A As shown in the figure, due to the different thickness H (H1>H2) of the rolled pole piece, the shape of the material roll is conical. At this time, the pressure P generated by the applied outer layer external tension is perpendicular to the contact surface of the rolled pole piece. The pressure P generates an axial component force P along the axial direction X. X and radial force P is generated along the radial direction Z Z In practice, if there is no circumferential slip between layers, the static friction force F along the axial direction is X Should be equal to the axial force P X ; If interlayer circumferential slip occurs, the static friction force F along the axial direction X Greater than the axial force P X .

[0255] Therefore, for the problem of interlayer circumferential slip, we only need to input appropriate external tension to prevent interlayer circumferential slip or minimize it.

[0256] For example, if the input external tension makes the second difference of all layers not less than 0 (that is, the circumferential friction between layers is not greater than the maximum circumferential static friction between layers), then the axial interference will be restrained and will not manifest itself, and the barrel phenomenon will not occur. Figure 5B A schematic diagram of the relationship between the second difference and the winding diameter provided in an embodiment of the present disclosure, such as Figure 5B As shown, as the winding diameter R continues to increase, the second difference F becomes smaller and smaller until it is close to 0. For example, when the winding diameter R is 250 mm, the second difference F is close to 0N.

[0257] For another example, if the input external tension cannot make the second difference of all layers not less than 0, then circumferential slip between layers will definitely occur. Then the only way is to minimize the degree of circumferential slip between layers, thereby minimizing the axial shape uncertainty and reducing the possibility of the barrel phenomenon. Figure 5C A schematic diagram of the relationship between the second difference and the winding diameter provided in an embodiment of the present disclosure, such as Figure 5C As shown, as the winding diameter R increases, the second difference F of some layer pole pieces may be less than 0. For example, when the winding diameter is 150 mm, the second difference F is less than 0.

[0258] (2) Determination stage

[0259] Here, this stage is mainly used to determine the optimal external tension (i.e., the first external tension) for winding each layer of pole pieces. The above formula (2-12) is used to determine the optimal external tension for each layer of pole pieces. That is, the optimal external tension for each layer of pole pieces makes the second difference of the corresponding layer of pole pieces not less than 0, or the second difference is close to 0.

[0260] Figure 5D A schematic diagram of the implementation flow of a tension determination method provided in an embodiment of the present disclosure is applied to a host computer, such as Figure 5D As shown, the method includes steps S501 to S506, wherein:

[0261] Step S501: in response to a triggering operation on a roll material management control in a first interface, displaying a roll material management interface in a configuration area of ​​the first interface;

[0262] Here, the coil management interface is used to manage the second configuration information of at least one pole piece, wherein the second configuration information of at least one pole piece is displayed in the second display area of ​​the coil management interface. The second configuration information may include but is not limited to the identification information of the pole piece, the first external tension of the j-th layer pole piece, the initial winding diameter of the winding shaft, the static friction coefficient of the pole piece, the Poisson's ratio of the pole piece, the thickness of the pole piece, etc.

[0263] Step S502, in response to a triggering operation on a save control of the coil management interface, saving second configuration information of at least one electrode piece displayed in a second display area of ​​the coil management interface to an information library;

[0264] Here, at least one electrode piece includes a newly added electrode piece, an existing electrode piece, etc. In implementation, a new electrode piece can be added through a new control in the coil management interface, and the added electrode piece can be displayed in the second display area. The second configuration information of a certain electrode piece displayed in the second display area can be edited through an edit control in the coil management interface.

[0265] Step S503: in response to a triggering operation on the tension management control in the first interface, displaying a tension determination control, an information display control, a tension output control, and a first display area in the configuration area of ​​the first interface;

[0266] Here, the first display area is used to display at least the optimal external tension of the first j layers of pole pieces of the target pole piece and the corresponding winding diameter.

[0267] Step S504, in response to the triggering operation of the tension determination control, obtaining the second configuration information of the target pole piece from the information library, and determining the optimal external tension of the first j-1 layers of target pole pieces based on the second configuration information of the target pole piece, and displaying the optimal external tension of the first j-1 layers of target pole pieces and the corresponding winding diameter in the first display area;

[0268] Here, the second difference value of each layer of pole pieces can be set to be not less than 0, and the above formula (2-12) can be used to reversely infer the optimal external tension of each layer of target pole pieces.

[0269] Step S505, in response to the triggering operation of the information display control, based on the optimal external tension of the first j layers of the target pole piece and the corresponding winding diameter, a fitting coefficient (i.e., fitting information) of the target pole piece is generated, and the fitting coefficient is displayed in the first display area;

[0270] Here, the fitting curve may also be displayed in the first display area.

[0271] Step S506: In response to the triggering operation on the tension output control, the first configuration information of the target pole piece is exported.

[0272] Here, the first configuration information includes the fitting information corresponding to the target pole piece, and / or the optimal external tension and the corresponding winding diameter of the first j layers of target pole pieces.

[0273] (3) Use phase

[0274] Here, this stage mainly uses the first configuration information of the target pole piece to determine in real time the external tension for rolling up the current layer of the target pole piece onto the winding shaft.

[0275] Figure 5E A schematic diagram of a tension determination method according to an embodiment of the present disclosure is provided, which is applied to a lower computer, such as Figure 5E As shown, the method includes steps S511 to S513, wherein:

[0276] Step S511, displaying a second interface including a coil configuration control and a third display area;

[0277] Step S512: In response to the triggering operation of the coil configuration control, first configuration information of the target electrode is imported, and the first configuration information is displayed in the third display area;

[0278] Step S513, in response to receiving the external tension of the current layer of pole pieces, displaying the external tension of the current layer of pole pieces in the third display area; wherein the external tension of the current layer of pole pieces is used to roll up the current layer of coiled material onto the winding shaft.

[0279] Fig. 5F A schematic diagram of a tension determination method according to an embodiment of the present disclosure is provided, which is applied to a lower computer, such as Fig. 5F As shown, the method includes steps S521 to S522, wherein:

[0280] Step S521, obtaining the winding diameter of the winding shaft for winding up the electrode sheet of the current layer;

[0281] Step S522, determining the external tension of the current layer of pole pieces based on the winding diameter of the current layer of pole pieces and the first configuration information of the target pole piece; wherein the external tension of the current layer of pole pieces is used to wind the current layer of pole pieces onto the winding shaft.

[0282] Here, when the first configuration information includes the first external tension of the first j layers of pole pieces and the corresponding winding diameter, the target first external tension matching the winding diameter of the current layer of pole pieces is determined from the first external tension of the first j layers of pole pieces, and the external tension of the current layer of pole pieces is determined based on the target first external tension. When the first configuration information includes fitting information corresponding to the target pole piece, the fitting information and the winding diameter of the current layer of pole pieces are input into the mapping relationship of formula (1-2), and the external tension of the current layer of pole pieces can be obtained.

[0283] In some embodiments, the external tension of the pole piece of the current layer may also be sent to other devices, such as a display device, and the display device is used to display the determined external tension of the pole piece of the current layer in real time.

[0284] Based on the above embodiments, the present disclosure provides a tension determination device. Figure 6 A schematic diagram of the structure of a tension determination device provided in an embodiment of the present disclosure is shown in FIG. Figure 6 As shown, the tension determination device 60 includes a first acquisition module 61 and a determination module 62, wherein:

[0285] The first acquisition module 61 is used to obtain the winding diameter of the current layer of coiled material wound by the winding shaft;

[0286] The determination module 62 is used to determine the external tension of the current layer of coiled material based on the winding diameter of the current layer of coiled material; wherein the external tension of the current layer of coiled material is used to wind the current layer of coiled material onto the winding shaft.

[0287] In some embodiments, the determination module 62 is further used to: determine the external tension of the current layer of coil based on the winding diameter of the current layer of coil and the first configuration information of the coil; wherein the first configuration information of the coil includes one of the following: the first external tension of the first j layers of coil and the corresponding winding diameter, and the fitting information corresponding to the coil, the fitting information corresponding to the coil is obtained by fitting the first external tension and the corresponding winding diameter of at least one layer of the first j layers of coil, and j is a positive integer.

[0288] In some embodiments, the determination module 62 is also used for one of the following: when the first configuration information includes the first external tension of the first j layers of coils and the corresponding winding diameter, determining the target first external tension that matches the winding diameter of the current layer of coil from the first external tensions of the first j layers of coils, and determining the external tension of the current layer of coil based on the target first external tension; wherein the first external tension of the first j-1 layers of coils is determined based on the first external tension of the jth layer of coil; when the first configuration information includes fitting information corresponding to the coil, determining the external tension of the current layer of coil based on the fitting information corresponding to the coil and the winding diameter of the current layer of coil.

[0289] In some embodiments, the device further includes a second determination module, the second determination module being configured to determine the first external tension of the first j-1 layers of coiled material based on the first external tension of the j-th layer of coiled material, wherein j-1 is a positive integer.

[0290] In some embodiments, the second determination module is further used to: determine the first external tension of the j-1th layer of coil based on the first external tension of the j-th layer of coil; for the ith layer of coil among the first j-2 layers of coil, determine the first external tension of the ith layer of coil based on the first external tension of the i+1th layer of coil to the first external tension of the j-th layer of coil; wherein i is a positive integer not greater than j-2.

[0291] In some embodiments, the second determination module is further used to: determine the interlayer circumferential static friction of the j-1th layer of coil based on the first external tension of the j-th layer of coil; determine the first external tension of the j-1th layer of coil based on the interlayer circumferential static friction of the j-1th layer of coil and the interlayer circumferential maximum static friction of the j-1th layer of coil.

[0292] In some embodiments, the second determination module is further used to: determine the second external tension of the j-1th layer of coil based on the first external tension of the j-1th layer of coil, the winding diameter of the j-1th layer of coil, and the winding diameter of the j-1th layer of coil; determine the interlayer circumferential static friction of the j-1th layer of coil based on the second external tension of the j-1th layer of coil and the internal tension of the j-1th layer of coil.

[0293] In some embodiments, the second determination module is further used to: determine a first ratio between the winding diameter of the j-th layer of coil and the winding diameter of the j-1-th layer of coil; and determine the second external tension of the j-1-th layer of coil based on the first ratio and the first external tension of the j-th layer of coil.

[0294] In some embodiments, the second determination module is further used to: determine the internal tension of the j-1th layer of coil based on the circumferential stress of the j-1th layer of coil; determine a first difference between the second external tension of the j-1th layer of coil and the internal tension of the j-1th layer of coil; and determine the interlayer circumferential static friction of the j-1th layer of coil based on the first difference.

[0295] In some embodiments, the second determination module is further used to: determine the circumferential stress of the j-1th layer of coil based on the circumferential stress within the coil of the j-1th layer of coil; determine the product of the circumferential stress of the j-1th layer of coil and the thickness of the coil; and determine the internal tension of the j-1th layer of coil based on the product.

[0296] In some embodiments, the second determination module is further used to: determine the circumferential stress inside the j-1 layer of coil based on the first external tension of the j-1 layer of coil, the winding diameter of the j-1 layer of coil, and the winding diameter of the j layer of coil; determine the circumferential stress of the j-1 layer of coil based on the second external tension of the j-1 layer of coil and the circumferential stress inside the roll of the j-1 layer of coil.

[0297] In some embodiments, the second determination module is further used to: determine a second difference between the maximum interlayer circumferential static friction of the j-1th layer of coil and the interlayer circumferential static friction of the j-1th layer of coil; and determine a first external tension of the j-1th layer of coil based on the second difference.

[0298] In some embodiments, the apparatus comprises a third determination module, and the third determination module is used to determine the maximum interlayer circumferential static friction force of the j-1th layer of coil based on the interlayer pressure of the j-1th layer of coil.

[0299] In some embodiments, the third determination module is further used to: determine the interlayer pressure of the j-1th layer of coil based on the first external tension of the j-th layer of coil, and the winding diameter of the j-1th layer of coil to the winding diameter of the j-1th layer of coil; determine the maximum circumferential static friction between layers of the j-1th layer of coil based on the static friction coefficient of the coil and the interlayer pressure of the j-1th layer of coil.

[0300] The description of the above device embodiment is similar to the description of the above method embodiment, and has similar beneficial effects as the method embodiment. For technical details not disclosed in the device embodiment of the present disclosure, please refer to the description of the method embodiment of the present disclosure for understanding.

[0301] Based on the above embodiments, the present disclosure provides a tension determination device. Figure 7 A schematic diagram of the structure of a tension determination device provided in an embodiment of the present disclosure is shown in FIG. Figure 7 As shown, the tension determination device 70 includes a first display module 71 and a second display module 72, wherein:

[0302] The first display module 71 is used to display a first interface; wherein the first interface includes a tension determination control and a first display area;

[0303] The second display module 72 is used to display the first external tension of at least one layer of coiled material in the first display area in response to a triggering operation on the tension determination control; wherein each of the first external tensions is determined based on the second configuration information of the coiled material, and each of the first external tensions is used to cooperate with the winding diameter of the current layer of coiled material to determine the external tension for winding the current layer of coiled material onto the winding shaft, and the second configuration information includes at least one of the following: the first external tension of the j-th layer of coiled material, the winding diameter of the j-th layer of coiled material, the initial winding diameter, and the static friction coefficient of the coiled material, where j is a positive integer.

[0304] In some embodiments, the first interface also includes a roll material management control, and the device also includes a fifth display module, and the fifth display module is used to display the roll material management interface in response to a trigger operation on the roll material management control; wherein the roll material management interface includes a roll material configuration control and a second display area; in response to the trigger operation on the roll material configuration control, the second configuration information of the roll is obtained, and the second configuration information of the roll is displayed in the second display area.

[0305] In some embodiments, the first interface also includes an information display control, and the device also includes a sixth display module, and the sixth display module is used to display the fitting information corresponding to the coil in the first display area in response to a trigger operation on the information display control; wherein the fitting information corresponding to the coil is obtained by fitting the first external tension and the corresponding winding diameter of the target layer coil, and the target layer coil includes m layers of coil in the at least one layer of coil, and m is a positive integer.

[0306] In some embodiments, the device further includes a fifth determination module, which is used to determine the first external tension of the first j-1 layers of coiled material based on the first external tension of the j-th layer of coiled material; wherein j-1 is a positive integer.

[0307] In some embodiments, the fifth determination module is further used to: determine the first external tension of the j-1th layer of coil based on the first external tension of the j-th layer of coil; for the ith layer of coil of the first j-2 layers of coil, determine the first external tension of the ith layer of coil based on the first external tension of the i+1th layer of coil to the first external tension of the j-th layer of coil; wherein i is a positive integer not greater than j-2.

[0308] In some embodiments, the fifth determination module is further used to: determine the interlayer circumferential static friction of the j-1th layer of coil based on the first external tension of the j-1th layer of coil; determine the first external tension of the j-1th layer of coil based on the interlayer circumferential static friction of the j-1th layer of coil and the interlayer circumferential maximum static friction of the j-1th layer of coil.

[0309] In some embodiments, the fifth determination module is further used to: determine the second external tension of the j-1 layer of coil based on the first external tension of the j-1 layer of coil, the winding diameter of the j-1 layer of coil, and the winding diameter of the j-1 layer of coil; determine the interlayer circumferential static friction of the j-1 layer of coil based on the second external tension of the j-1 layer of coil and the internal tension of the j-1 layer of coil.

[0310] In some embodiments, the fifth determination module is further used to: determine a first ratio between the winding diameter of the j-th layer of coil and the winding diameter of the j-1-th layer of coil; and determine the second external tension of the j-1-th layer of coil based on the first ratio and the first external tension of the j-th layer of coil.

[0311] In some embodiments, the fifth determination module is further used to: determine the internal tension of the j-1th layer of coil based on the circumferential stress of the j-1th layer of coil; determine a first difference between the second external tension of the j-1th layer of coil and the internal tension of the j-1th layer of coil; and determine the interlayer circumferential static friction of the j-1th layer of coil based on the first difference.

[0312] In some embodiments, the fifth determination module is further used to: determine the circumferential stress of the j-1th layer of coil based on the circumferential stress within the coil of the j-1th layer of coil; determine the product of the circumferential stress of the j-1th layer of coil and the thickness of the coil; and determine the internal tension of the j-1th layer of coil based on the product.

[0313] In some embodiments, the fifth determination module is further used to: determine the circumferential stress inside the roll of the j-1th layer of coil based on the first external tension of the j-1th layer of coil, the winding diameter of the j-1th layer of coil, and the winding diameter of the j-1th layer of coil; determine the circumferential stress of the j-1th layer of coil based on the second external tension of the j-1th layer of coil and the circumferential stress inside the roll of the j-1th layer of coil.

[0314] In some embodiments, the fifth determination module is further used to: determine a second difference between the maximum interlayer circumferential static friction of the j-1th layer of coil and the interlayer circumferential static friction of the j-1th layer of coil; and determine a first external tension of the j-1th layer of coil based on the second difference.

[0315] In some embodiments, the apparatus comprises a sixth determination module, and the sixth determination module is used to determine the maximum interlayer circumferential static friction force of the j-1th layer of coil based on the interlayer pressure of the j-1th layer of coil.

[0316] In some embodiments, the sixth determination module is also used to: determine the interlayer pressure of the j-1th layer of coil based on the first external tension of the j-th layer of coil, and the winding diameter of the j-1th layer of coil to the winding diameter of the j-1th layer of coil; determine the maximum circumferential static friction between layers of the j-1th layer of coil based on the static friction coefficient of the coil and the interlayer pressure of the j-1th layer of coil.

[0317] The description of the above device embodiment is similar to the description of the above method embodiment, and has similar beneficial effects as the method embodiment. For technical details not disclosed in the device embodiment of the present disclosure, please refer to the description of the method embodiment of the present disclosure for understanding.

[0318] Based on the above embodiments, the present disclosure provides a tension determination device. Figure 8 A schematic diagram of the structure of a tension determination device provided in an embodiment of the present disclosure is shown in FIG. Figure 8 As shown, the tension determination device 80 includes a third display module 81, a second acquisition module 82 and a fourth display module 83, wherein:

[0319] The third display module 81 is used to display a second interface; wherein the second interface includes a coil configuration control and a third display area;

[0320] The second acquisition module 82 is used to acquire first configuration information of the coil in response to a triggering operation on the coil configuration control;

[0321] The fourth display module 83 is used to display the external tension of the current layer of coil in the third display area; wherein the external tension of the current layer of coil is determined based on the first configuration information of the coil and the winding diameter of the current layer of coil, and the external tension of the current layer of coil is used to wind the current layer of coil onto the winding shaft.

[0322] The description of the above device embodiment is similar to the description of the above method embodiment, and has similar beneficial effects as the method embodiment. For technical details not disclosed in the device embodiment of the present disclosure, please refer to the description of the method embodiment of the present disclosure for understanding.

[0323] It should be noted that in the embodiments of the present disclosure, if the above method is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiments of the present disclosure is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present disclosure. The aforementioned storage medium includes: various media that can store program codes, such as a U disk, a mobile hard disk, a read-only memory (ROM), a magnetic disk or an optical disk. In this way, the embodiments of the present disclosure are not limited to any specific combination of hardware and software.

[0324] An embodiment of the present disclosure provides a computer device, including a memory and a processor, wherein the memory stores a computer program that can be run on the processor, and the processor implements the above method when executing the computer program.

[0325] The embodiment of the present disclosure provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above method is implemented. The computer-readable storage medium may be transient or non-transient.

[0326] The present disclosure provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program, and when the computer program is read and executed by a computer, some or all of the steps in the above method are implemented. The computer program product can be implemented specifically by hardware, software or a combination thereof. In an optional embodiment, the computer program product is specifically embodied as a computer storage medium, and in another optional embodiment, the computer program product is specifically embodied as a software product, such as a software development kit (Software Development Kit, SDK) and the like.

[0327] It should be noted that Fig. 9 is a schematic diagram of a hardware entity of a computer device in an embodiment of the present disclosure, such as Fig. 9 As shown, the hardware entity of the computer device 900 includes: a controller 901, a communication interface 902 and a memory 903, wherein:

[0328] The controller 901 generally controls the overall operation of the computer device 900. In practice, the controller 901 may be any suitable controller, such as a PLC.

[0329] The communication interface 902 enables the computer device to communicate with other terminals or servers through a network.

[0330] The memory 903 is configured to store instructions and applications executable by the controller 901, and can also cache data to be processed or processed by the controller 901 and each module in the computer device 900 (for example, image data, audio data, voice communication data, and video communication data), which can be implemented by flash memory (FLASH) or random access memory (Random Access Memory, RAM). Data can be transmitted between the controller 901, the communication interface 902, and the memory 903 through the bus 904.

[0331] It should be noted that the description of the above storage medium and device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium and device embodiments of the present disclosure, please refer to the description of the method embodiments of the present disclosure for understanding.

[0332] It should be understood that the "one embodiment" or "an embodiment" mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present disclosure. Therefore, "in one embodiment" or "in one embodiment" appearing throughout the specification may not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present disclosure, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and 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 embodiment of the present disclosure. The above-mentioned sequence numbers of the embodiments of the present disclosure are only for description and do not represent the advantages and disadvantages of the embodiments. It should be noted that in this article, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of more restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the element.

[0333] In the several embodiments provided in the present disclosure, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the devices or units can be electrical, mechanical or other forms.

[0334] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed on multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. In addition, all functional units in the embodiments of the present disclosure may be integrated into one processing unit, or each unit may be separately used as a unit, or two or more units may be integrated into one unit; the above integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0335] It can be understood by a person skilled in the art that all or part of the steps of the above-mentioned method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above-mentioned method embodiment are executed; and the aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, read-only memory (ROM), magnetic disks or optical disks. Alternatively, if the above-mentioned integrated unit of the present disclosure is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on such an understanding, the technical solution of the present disclosure can be essentially or partly embodied in the form of a software product that contributes to the relevant technology. The computer software product is stored in a storage medium, including several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in each embodiment of the present disclosure. And the aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks or optical disks.

[0336] The above description is only an implementation mode of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure.

Claims

1. A tension determination method, characterized in that: The method comprises: Get the winding diameter of the current layer of coiled material wound by the winding shaft; Based on the winding diameter of the current layer of coiled material, the external tension of the current layer of coiled material is determined; wherein the external tension of the current layer of coiled material is used to wind the current layer of coiled material onto the winding shaft.

2. The method according to claim 1, characterized in that The determining the external tension of the current layer of coiled material based on the winding diameter of the current layer of coiled material comprises: Based on the winding diameter of the current layer of coil and the first configuration information of the coil, the external tension of the current layer of coil is determined; wherein the first configuration information of the coil includes one of the following: the first external tension of the first j layers of coil and the corresponding winding diameter, and the fitting information corresponding to the coil, the fitting information corresponding to the coil is obtained by fitting the first external tension and the corresponding winding diameter of at least one layer of the first j layers of coil, and j is a positive integer.

3. The method according to claim 2, characterized in that The determining the external tension of the current layer of coiled material based on the winding diameter of the current layer of coiled material and the first configuration information of the coiled material comprises one of the following: In the case where the first configuration information includes the first external tension of the first j layers of coils and the corresponding winding diameter, a target first external tension matching the winding diameter of the current layer of coil is determined from the first external tensions of the first j layers of coils, and the external tension of the current layer of coil is determined based on the target first external tension; wherein the first external tension of the first j-1 layers of coils is determined based on the first external tension of the jth layer of coil, and j-1 is a positive integer; In the case where the first configuration information includes fitting information corresponding to the coil, the external tension of the current layer of coil is determined based on the fitting information corresponding to the coil and the winding diameter of the current layer of coil.

4. The method according to any one of claims 1 to 3, characterized in that The method further comprises: Based on the first external tension of the j-th layer of coil, the first external tension of the first j-1 layers of coil is determined; wherein j-1 is a positive integer.

5. The method according to claim 4, characterized in that The determining the first external tension of the first j-1 layers of coiled material based on the first external tension of the j-th layer of coiled material comprises: Determining the first external tension of the j-1th layer of coiled material based on the first external tension of the jth layer of coiled material; For the i-th layer of the first j-2 layers of coils, the first external tension of the i-th layer of coil is determined based on the first external tension of the i+1-th layer of coil to the first external tension of the j-th layer of coil; wherein i is a positive integer not greater than j-2.

6. The method according to claim 5, characterized in that The determining the first external tension of the j-1th layer of coiled material based on the first external tension of the jth layer of coiled material comprises: Determining the interlayer circumferential static friction force of the j-1th layer of coiled material based on the first external tension of the jth layer of coiled material; The first external tension of the j-1th layer of coil is determined based on the interlayer circumferential static friction of the j-1th layer of coil and the interlayer circumferential maximum static friction of the j-1th layer of coil.

7. The method according to claim 6, characterized in that The determining of the interlayer circumferential static friction force of the j-1th layer of coiled material based on the first external tension of the jth layer of coiled material comprises: Determining a second external tension of the j-1th layer of coil based on the first external tension of the j-th layer of coil, the winding diameter of the j-th layer of coil, and the winding diameter of the j-1th layer of coil; The interlayer circumferential static friction force of the j-1th layer of coil is determined based on the second external tension of the j-1th layer of coil and the internal tension of the j-1th layer of coil.

8. The method according to claim 7, characterized in that The method of determining the second external tension of the j-1 layer of coil based on the first external tension of the j-1 layer of coil, the winding diameter of the j-1 layer of coil, and the winding diameter of the j-1 layer of coil, comprises: Determining a first ratio between the winding diameter of the j-th layer of coil and the winding diameter of the j-1-th layer of coil; The second external tension of the j-1th layer of the web is determined based on the first ratio and the first external tension of the j-th layer of the web.

9. The method according to claim 7 or 8, characterized in that: The determining of the interlayer circumferential static friction force of the j-1th layer of coiled material based on the second external tension of the j-1th layer of coiled material and the internal tension of the j-1th layer of coiled material comprises: Determining the internal tension of the j-1th layer of coiled material based on the circumferential stress of the j-1th layer of coiled material; Determining a first difference between a second external tension of the j-1th layer of coil and an internal tension of the j-1th layer of coil; The interlayer circumferential static friction force of the j-1th layer of coiled material is determined based on the first difference.

10. The method according to claim 9, characterized in that The determining the internal tension of the j-1th layer of coiled material based on the circumferential stress of the j-1th layer of coiled material comprises: Determining the circumferential stress of the j-1th layer of coil based on the circumferential stress within the coil of the j-1th layer of coil; Determining the product of the circumferential stress of the j-1th layer of coil and the thickness of the coil; Based on the product, the internal tension of the j-1th layer of the web is determined.

11. The method according to claim 10, characterized in that The determining the circumferential stress of the j-1th layer of coil based on the circumferential stress within the coil of the j-1th layer of coil comprises: Determining the in-roll circumferential stress of the j-1th layer of coil based on the first external tension of the j-1th layer of coil, the winding diameter of the j-1th layer of coil, and the winding diameter of the jth layer of coil; The circumferential stress of the j-1th layer of coil is determined based on the second external tension of the j-1th layer of coil and the circumferential stress within the coil of the j-1th layer of coil.

12. The method according to any one of claims 6 to 11, characterized in that The determining of the first external tension of the j-1th layer of coiled material based on the interlayer circumferential static friction of the j-1th layer of coiled material and the interlayer circumferential maximum static friction of the j-1th layer of coiled material comprises: Determine a second difference between the maximum circumferential static friction force between layers of the j-1th layer of coil and the circumferential static friction force between layers of the j-1th layer of coil; Based on the second difference, a first external tension of the j-1th layer of web is determined.

13. The method according to any one of claims 5 to 12, characterized in that The method further comprises: Based on the interlayer pressure of the j-1th layer of coiled material, the maximum interlayer circumferential static friction force of the j-1th layer of coiled material is determined.

14. The method according to claim 13, characterized in that The step of determining the maximum circumferential static friction force between layers of the j-1th layer of coiled material based on the interlayer pressure of the j-1th layer of coiled material comprises: Determining the interlayer pressure of the j-1th layer of coil based on the first external tension of the j-th layer of coil and the winding diameter of the j-1th layer of coil to the winding diameter of the j-1th layer of coil; The maximum interlayer circumferential static friction force of the j-1th layer of coil is determined based on the static friction coefficient of the coil and the interlayer pressure of the j-1th layer of coil.

15. A method for determining tension, characterized in that: The method comprises: Displaying a first interface; wherein the first interface includes a tension determination control and a first display area; In response to a triggering operation on the tension determination control, a first external tension of winding at least one layer of coiled material is displayed in the first display area; wherein each of the first external tensions is determined based on second configuration information of the coiled material, and each of the first external tensions is used to cooperate with the winding diameter of the current layer of coiled material to determine the external tension for winding the current layer of coiled material onto the winding shaft, and the second configuration information includes at least one of the following: the first external tension of the j-th layer of coiled material, the winding diameter of the j-th layer of coiled material, the initial winding diameter, and the static friction coefficient of the coiled material, and j is a positive integer.

16. The method according to claim 15, characterized in that The first interface also includes a coil management control, and the method further includes: In response to a triggering operation on the roll material management control, a roll material management interface is displayed; wherein the roll material management interface includes a roll material configuration control and a second display area; In response to a triggering operation on the coil configuration control, second configuration information of the coil is acquired, and the second configuration information of the coil is displayed in the second display area.

17. The method according to claim 15 or 16, characterized in that The first interface also includes an information display control, and the method further includes: In response to a triggering operation on the information display control, the fitting information corresponding to the coil is displayed in the first display area; wherein the fitting information corresponding to the coil is obtained by fitting the first external tension and the corresponding winding diameter of the target layer coil, and the target layer coil includes m layers of coils in the at least one layer of coils, where m is a positive integer.

18. A method for determining tension, characterized in that: The method comprises: Display a second interface; wherein the second interface includes a coil configuration control and a third display area; In response to a triggering operation on the coil configuration control, acquiring first configuration information of the coil; The external tension of the current layer of coil is displayed in the third display area; wherein the external tension of the current layer of coil is determined based on the first configuration information of the coil and the winding diameter of the current layer of coil, and the external tension of the current layer of coil is used to wind the current layer of coil onto the winding shaft.

19. A tension determination device, characterized in that: The device comprises: The first acquisition module is used to obtain the winding diameter of the current layer of coiled material wound by the winding shaft; A determination module is used to determine the external tension of the current layer of coiled material based on the winding diameter of the current layer of coiled material; wherein the external tension of the current layer of coiled material is used to wind the current layer of coiled material onto the winding shaft.

20. A tension determination device, characterized in that: The device comprises: A first display module, used to display a first interface; wherein the first interface includes a tension determination control and a first display area; A second display module is used to display the first external tension of at least one layer of coiled material in the first display area in response to a trigger operation on the tension determination control; wherein each of the first external tensions is determined based on the second configuration information of the coiled material, and each of the first external tensions is used to cooperate with the winding diameter of the current layer of coiled material to determine the external tension for winding the current layer of coiled material onto the winding shaft, and the second configuration information includes at least one of the following: the first external tension of the j-th layer of coiled material, the winding diameter of the j-th layer of coiled material, the initial winding diameter, and the static friction coefficient of the coiled material, and j is a positive integer.

21. A tension determination device, characterized in that: The device comprises: A third display module, used to display a second interface; wherein the second interface includes a coil configuration control and a third display area; A second acquisition module, configured to acquire first configuration information of the coil in response to a triggering operation on the coil configuration control; The fourth display module is used to display the external tension of the current layer of coiled material in the third display area; wherein the external tension of the current layer of coiled material is determined based on the first configuration information of the coiled material and the winding diameter of the current layer of coiled material, and the external tension of the current layer of coiled material is used to wind the current layer of coiled material onto a winding shaft.

22. A computer device, characterized in that: The method comprises a processor and a memory, wherein the memory stores a computer program executable on the processor, and the processor implements the method according to any one of claims 1 to 18 when executing the computer program.

23. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor, the method described in any one of claims 1 to 18 is implemented.

Images