Tension determination method and apparatus, computer device, storage medium, and computer program product

Abstract

A tension determination method, comprising: acquiring the winding diameter of a current-layer coiled material wound by a winding reel; and on the basis of the winding diameter of the current-layer coiled material, determining an external tension of the current-layer coiled material, wherein the external tension of the current-layer coiled material is used for winding the current-layer coiled material onto the winding reel. According to the method, the external tension of winding is determined in real time by means of the winding diameter, thereby reducing the interlayer sliding degree of the inner-layer coiled material, thus reducing the gun barrel phenomenon, and reducing the waste of coiled materials. The present invention further comprises a tension determination apparatus, a computer device, a storage medium, and a computer program product.

Description

Tension determination method and device, computer equipment, storage medium and computer program product

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on Chinese patent application number 202310942664.9, application date July 28, 2023, and invention name “Tension determination method and device, computer equipment and storage medium”, and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby introduced into this disclosure as a reference. Technical Field

[0003] The present disclosure relates to, but is not limited to, the field of battery cell winding technology, and in particular to a tension determination method and apparatus, computer equipment, storage medium, and computer program product. Background Art

[0004] In the related art, in the process of winding the coil (for example, the pole piece), a constant tension mode is basically adopted. In this way, the inner layer of the coil is prone to interlayer slippage, resulting in a barrel phenomenon, which not only causes a large amount of coil waste, but also reduces the reliability of the product.

[0005] Summary of the Invention

[0006] Embodiments of the present disclosure provide a tension determination method and apparatus, a computer device, a storage medium, and a computer program product.

[0007] The technical solution of the embodiment of the present disclosure is implemented as follows:

[0008] An embodiment of the present disclosure provides a tension determination method, the method comprising:

[0009] Get the winding diameter of the current layer of coiled material being wound by the winding shaft;

[0010] 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.

[0011] An embodiment of the present disclosure provides a tension determination method, the method comprising:

[0012] Displaying a first interface; wherein the first interface includes a tension determination control and a first display area;

[0013] In response to the triggering operation of the tension determination control, the first external tension of at least one layer of coil is displayed in the first display area; wherein, each first external tension is determined based on the second configuration information of the coil, and each first external tension is used to cooperate with the winding diameter of the current layer of coil to determine the external tension for winding the current layer of coil onto the winding shaft, and the second configuration information includes at least one of the following: the first external tension of the fourth target layer of coil, the winding diameter of the fourth target layer of coil, the initial winding diameter, and the static friction coefficient of the coil.

[0014] An embodiment of the present disclosure provides a tension determination method, the method comprising:

[0015] Display a second interface; wherein the second interface includes a coil configuration control and a third display area;

[0016] In response to a triggering operation on the coil configuration control, obtaining first configuration information of the coil;

[0017] 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.

[0018] An embodiment of the present disclosure provides a tension determination device, the device comprising:

[0019] The first acquiring part is configured to acquire the winding diameter of the current layer of coiled material wound by the winding shaft;

[0020] The determining part is configured 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.

[0021] An embodiment of the present disclosure provides a tension determination device, the device comprising:

[0022] A first display portion is configured to display a first interface; wherein the first interface includes a tension determination control and a first display area;

[0023] The second display part is configured to display the first external tension of at least one layer of coil in the first display area in response to the triggering operation of the tension determination control; wherein, each first external tension is determined based on the second configuration information of the coil, and each first external tension is used to cooperate with the winding diameter of the current layer of coil to determine the external tension for winding the current layer of coil onto the winding shaft, and the second configuration information includes at least one of the following: the first external tension of the fourth target layer of coil, the winding diameter of the fourth target layer of coil, the initial winding diameter, and the static friction coefficient of the coil.

[0024] An embodiment of the present disclosure provides a tension determination device, the device comprising:

[0025] The third display portion is configured to display a second interface; wherein the second interface includes a coil configuration control and a third display area;

[0026] A second acquiring part is configured to acquire first configuration information of the coil in response to a triggering operation on the coil configuration control;

[0027] The fourth display part is configured 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.

[0028] 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.

[0029] An embodiment of the present disclosure provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, the above method is implemented.

[0030] An embodiment of the present disclosure provides a computer program product, which includes a non-transitory computer-readable storage medium storing a computer program. When the computer program is read and executed by a computer, the above method is implemented.

[0031] In the disclosed embodiment, the winding diameter of the current layer of coiled material is obtained 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. In this way, the real-time determination of the winding external tension based on the winding diameter reduces the degree of interlayer slippage of the inner layer of coiled material compared to the constant tension mode, thereby reducing the possibility of barrel phenomenon, thereby reducing coil waste and improving product reliability.

[0032] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are not restrictive of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings herein are incorporated into and constitute a part of the specification. These drawings illustrate embodiments consistent with the present disclosure and, together with the specification, are used to explain the technical solutions of the present disclosure.

[0034] FIG1A is a schematic diagram of the structure of a coiled material transmission device provided by an embodiment of the present disclosure;

[0035] FIG1B is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure;

[0036] FIG2A is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure;

[0037] FIG2B is a schematic diagram of the external tension required for the i-th layer of coil to pull the j-th layer of coil provided by an embodiment of the present disclosure;

[0038] FIG2C is a schematic diagram of the internal tension of a first layer of coiled material provided by an embodiment of the present disclosure;

[0039] FIG2D is a schematic diagram of a coil winding process provided by an embodiment of the present disclosure;

[0040] FIG2E is a schematic diagram of interlayer pressure of a first layer of coiled material provided by an embodiment of the present disclosure;

[0041] FIG3A is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure;

[0042] FIG3B is a schematic diagram of a first interface provided by an embodiment of the present disclosure;

[0043] FIG3C is a schematic diagram of a first interface provided by an embodiment of the present disclosure;

[0044] FIG3D is a schematic diagram of a coil configuration interface provided by an embodiment of the present disclosure;

[0045] FIG3E is a schematic diagram of a first interface provided by an embodiment of the present disclosure;

[0046] FIG4A is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure;

[0047] FIG4B is a schematic diagram of a second interface provided by an embodiment of the present disclosure;

[0048] FIG5A is a schematic diagram of an axial interference provided by an embodiment of the present disclosure;

[0049] FIG5B is a schematic diagram of a relationship between a second difference and a winding diameter provided by an embodiment of the present disclosure;

[0050] FIG5C is a schematic diagram of a relationship between a second difference and a winding diameter provided by an embodiment of the present disclosure;

[0051] FIG5D is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure;

[0052] FIG5E is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure;

[0053] FIG5F is a schematic diagram of an implementation flow of a tension determination method provided in an embodiment of the present disclosure;

[0054] FIG6 is a schematic diagram of the structure of a tension determination device provided in an embodiment of the present disclosure;

[0055] FIG7 is a schematic diagram of the structure of a tension determination device provided in an embodiment of the present disclosure;

[0056] FIG8 is a schematic diagram of the structure of a tension determination device provided in an embodiment of the present disclosure;

[0057] FIG9 is a schematic diagram of a hardware entity of a computer device provided in an embodiment of the present disclosure. DETAILED DESCRIPTION

[0058] In order to make the purpose, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limiting the present disclosure. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0059] In the following description, reference is made to “some embodiments”, which describes 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.

[0060] In the following description, the terms "first\second\third" are used to distinguish similar objects and do not represent a specific order for the objects. It can be understood that "first\second\third" can be interchanged with the 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.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art in the art of the present disclosure. 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.

[0062] In related technologies, power batteries are widely used in a variety of fields, including energy storage systems, electric vehicles, military equipment, and aerospace. Power batteries consist of battery cells. Electrode sheets are the primary component of a single cell and directly determine the battery's electrochemical performance and safety. Electrode sheets consist of a metal current collector and a coating uniformly applied to the metal current collector. During the manufacturing process, electrode sheets are delivered in rolls for coating, rolling, and slitting.

[0063] An important criterion for judging the quality of a coil is its density. When the coil is wound too loosely, it is very easy to deform, resulting in a barrel phenomenon (i.e., the coil is not round enough), which is not conducive to transportation and storage. When the out-of-round coil is rewound, it will cause periodic tension fluctuations and even cause the coil to move during transportation, making smooth transportation impossible. At the same time, if the coil is not tight, it is prone to axial slippage, resulting in uneven end faces of the coil. When the coil is wound too tightly, it will cause different layers within the coil to adhere to each other, resulting in wrinkles. At the same time, a higher coil density means greater residual stress inside the coil, which will cause deformation or even damage to the coil after winding.

[0064] Currently, production equipment for the pre-cell process (e.g., coating equipment and cold pressing equipment) all utilize a roll-to-roll unwinding and rewinding structure. During the rewinding process, as the roll diameter increases, the inner layer tension decreases. If a constant tension mode is used, when the inner layer tension decreases to a certain level, the maximum circumferential static friction between the layers will be less than the actual friction between the layers, causing interlayer slippage in the inner coil and, in turn, the barrel phenomenon. This not only results in significant material waste but also reduces product reliability.

[0065] The embodiments of the present disclosure provide a tension determination method, which determines the external tension of the winding in real time by the winding coil 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 barrel phenomenon, thereby reducing the waste of the coil and improving the reliability of the product. The method provided by the embodiments of the present disclosure can be executed by a computer device, which can be various types of terminals such as laptop computers, tablet computers, desktop computers, and coil transmission equipment. The coil transmission equipment can be any suitable type of coil transmission equipment for any suitable scenario. For example, in the field of battery manufacturing, the coil transmission equipment can be equipment for coating / rolling / slitting processes. At the same time, the coil transmission equipment can also be equipment in non-battery manufacturing fields. In some embodiments, the coil transmission equipment also has a programmable logic controller (PLC).

[0066] 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.

[0067] 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.

[0068] FIG1A is a schematic diagram of the structure of a coil transport device provided by an embodiment of the present disclosure. As shown in FIG1A , the coil transport device includes an unwinding device 101, a traction device 102, and a rewinding device 103. A coil 104 is unwound from the unwinding device 101 and conveyed to the rewinding device 103 under the traction of the traction device 102. During the process of rewinding the coil 104 by the rewinding device 103, tension is applied to the coil 104 so that the coil 104 is rewound into the rewinding device 103. In some embodiments, the coil transport device 100 may further include corresponding devices or equipment for performing coating, rolling, or slitting processes on the coil 104 during the transport process.

[0069] FIG1B is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure, which is applied to a computer device (e.g., a slave computer). As shown in FIG1B , the method includes steps S11 to S12, wherein:

[0070] Step S11: obtaining the winding diameter of the current layer of coiled material wound by the winding shaft.

[0071] Here, the winding shaft can be any suitable shaft capable of winding the coiled material, such as 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 coiled material.

[0072] 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.

[0073] 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.

[0074] The winding diameter refers to the radius of the package after the winding shaft has wound the nth layer of coil. The winding diameter can be determined in any suitable manner.

[0075] For example, any suitable sensor can be used to perform real-time detection on the winding shaft or coil, and the detected value (excluding the coil radius of the current layer of coil) is used to determine the winding diameter of the current layer. For example, the detected value is used as the winding diameter of the current layer. In another example, the sum of the detected value and the thickness of the coil is used as the winding diameter of the current layer.

[0076] 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, wherein 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 , that is: R i =R0+i×h (1-1);

[0077] Among them, R0 is the initial winding diameter, i is the number of winding layers, and h is the thickness of the coil.

[0078] 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.

[0079] Here, external tension refers to the external tension acting on the unit width of the current coil when winding the current coil. During implementation, the external tension of the current coil is calculated in real time based on the coil diameter of the current coil. This external tension is used to wind the current coil onto the winding reel.

[0080] For example, based on a preset correspondence, a target first external tension matching the winding diameter of the current layer of coil is determined from multiple first external tensions, and this target first external tension is used as the external tension of the current layer of coil. This correspondence characterizes the relationship between at least one first external tension and the corresponding winding diameter. During implementation, a correspondence between the first external tension and the winding diameter can be pre-established. Thus, the target first external tension matching the winding diameter of the current layer of coil can be determined based on this correspondence. During implementation, those skilled in the art can independently set the correspondence between the first external tension and the winding diameter based on actual needs, and this is not limited in the present embodiment. For example, based on the first external tension of the last layer of coil (i.e., the outermost layer of coil) in a coil sequence, the first external tension of each layer of coil preceding the last layer can be inferred. The first external tension of the last layer of coil can be a set value. If the coil sequence includes at least one layer of coil, for example, layer j, then the first external tension of the j-1 layers preceding it can be inferred based on the first external tension of the j-th layer of coil, where j is a positive integer. Each first external tension is used to minimize the interlayer circumferential slippage between the inner layer coils, that is, no interlayer circumferential slippage occurs, or the degree of interlayer circumferential slippage is minimized.

[0081] For another example, the external tension of the current layer of coil is calculated based on the winding diameter of the current layer according to a preset mapping relationship. The mapping relationship represents the relationship between the fitting information corresponding to the coil and the winding diameter, where the fitting information corresponding to the coil is obtained by fitting at least one first external tension and the corresponding winding diameter.

[0082] In some embodiments, step S12 includes step S121, wherein:

[0083] 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.

[0084] Here, the first configuration information may include, but is not limited to, the first external tension and corresponding winding diameter of each layer of coil in the coil sequence (i.e., the aforementioned correspondence), and the corresponding fitting information for the coil. The coil sequence includes at least one layer of coil, and the first external tension of each layer of coil is used to minimize interlayer circumferential slippage between the corresponding layers of coil. The corresponding fitting information for the coil is obtained by fitting the first external tension and corresponding winding diameter of at least one layer of coil in the coil sequence. In some embodiments, the computer device that determines the first configuration information of the coil 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 coil may be a host computer, and the computer device that executes the tension determination method may be a slave computer.

[0085] In some embodiments, step S121 includes step S1211 or step S1212, wherein:

[0086] Step S1211. When the first configuration information includes the first external tension of each layer of coil in the coil sequence 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 tension of each layer of coil in the coil sequence, and determine the external tension of the current layer of coil based on the target first external tension.

[0087] Here, the first external tension of the first target layer of coils in the coil sequence is determined based on the first external tension of the last layer of coils in the coil sequence. The first target layer of coils includes all layers of coils in the coil sequence except the last layer. For example, if the coil sequence includes j layers of coils, then 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, where j is a positive integer. For example, if the coil sequence includes 50 layers of coils, then the first external tensions of the 1st to 49th layers of coils are all determined based on the first external tension of the 50th layer of coil. 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 may not necessarily be the ideal winding diameter (i.e., the winding diameter calculated according to the above formula 1-1). Therefore, the number of target first external tensions may be at least one. For example, if the winding diameter of the current layer of coiled material is 100 millimeters (mm), and the winding diameter corresponding to a first external tension is also 100 mm, then that first external tension is used as the target first external tension. For another example, if the winding diameter of the current layer of coiled material is 105 millimeters (mm), and the winding diameter corresponding to a first external tension is 100 mm, and the winding diameter corresponding to another first external tension is 110 mm, then these two first external tensions are each used as the target first external tension.

[0088] During implementation, if the number of the target first external tension is one, the target first external tension is used as the external tension of the current layer of the coil. For example, if the target first external tension is 123.2 N (Newton), then 123.2 N is used as the external tension of the current layer of the coil.

[0089] When there are at least two target first external tensions, the mean / variance / mean squared deviation of the at least two first external tensions, or weighting of the mean / variance / mean squared deviation, can be used as the external tension of the current layer of web. For example, if one target first external tension is 123.2N and another 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 web, i.e., the external tension of the current layer of web is 123.25N.

[0090] 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.

[0091] 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 or a curve fitting algorithm. In some embodiments, a multi-order (e.g., third-order, fifth-order, etc.) curve fit can be performed on the first external tension of the target layer of coil and the corresponding winding diameter to obtain the fitting information. The target layer of coil can include at least one layer of coil in the coil sequence. For example, the target layer of coil can include all layers of coil in the coil sequence, or it can include only a portion of the layers of coil in the coil sequence.

[0092] In some embodiments, the external tension corresponding to the winding diameter of the current layer of coiled material is calculated in real time based on a preset mapping relationship, wherein the mapping relationship represents the relationship between the fitting information corresponding to the coiled material and the winding diameter.

[0093] In some implementations, the mapping relationship may be expressed by the following formula (1-2), namely: T = AR 5 +BR 4 +CR 3 +DR 2 +ER+F (1-2);

[0094] Wherein, T represents the external tension, R is the winding diameter, and A~F are fitting coefficients.

[0095] 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.

[0096] In the embodiment of the present disclosure, on the one hand, the external tension of the current layer of coil is determined according to the first external tension of each layer of coil in the coil sequence. Since the first external tension of each layer of coil in the coil sequence 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 volume is reduced compared to storing the first external tension of each layer of coil in the coil sequence and the corresponding winding diameter, which relieves the storage pressure of the equipment. At the same time, the errors caused by the influence of environmental, equipment and other factors can be corrected, so that the calculation result of the external tension is more accurate.

[0097] 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 rewind the current layer of coiled material.

[0098] In the disclosed embodiment, the external tension of the winding is determined 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.

[0099] FIG2A is a schematic diagram of a flow chart of a method for determining tension according to an embodiment of the present disclosure, which is applied to a computer device (e.g., a slave computer). As shown in FIG2A , the method includes steps S21 to S23, wherein:

[0100] Step S21 : determining a first external tension of a first target layer of coils based on a first external tension of a last layer of coils in a coil sequence; wherein the first target layer of coils includes all layers of coils in the coil sequence except the last layer of coils.

[0101] Here, the coil sequence can include multiple layers of coils, and the first target layer of coils can include at least one layer of coils. The first target layer is all coils in the coil sequence except the last layer. For example, if the coil sequence includes j layers of coils, then the last layer is the jth layer, and the first target layer is the first j-1 layers, where j is a positive integer. The first external tension of the last layer of coils can be a set value, and the last layer of coils can be the outermost layer of coils, that is, the last layer is the largest winding layer.

[0102] In some embodiments, the first external tension of the second target layer of coils (i.e., the coil above the last layer) can be inferred based on the first external tension of the last coil. The first external tension of the coils from the second target layer to the last layer can then be inferred based on the first external tensions. This can be repeated until the first external tension of the first coil is obtained. For example, if the coil sequence includes j layers of coils, the first external tension of the j-1 layer can be inferred based on the first external tension of the j-1 layer. The first external tension of the j-2 layer can then be inferred based on the first external tensions of the coils from the j-1 layer to the j layer. The first external tension of the j-3 layer can then be inferred based on the first external tensions of the coils from the j-2 layer to the j layer. This can be repeated until the first external tension of the first coil is obtained.

[0103] During the actual winding process, a drive device (e.g., a motor) drives the winding shaft to rotate. The first layer of coil is typically connected to the winding shaft by adhesion. The first layer pulls the second layer of coil to be wound, the second layer pulls the third layer of coil to be wound, and so on, until the outermost layer of coil is wound to complete the winding. In practice, when the driving force (i.e., external tension) of the i-th layer of coil (any of 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, resulting in uneven end faces of the wound coil. Therefore, the interlayer circumferential static friction of the i-th coil can be determined based on the first external tensions of the i+1-th to j-th coils. The first external tension of the i-th coil can be determined based on the interlayer circumferential static friction of the i-th coil and the maximum interlayer circumferential static friction of the i-th coil. That is, the interlayer circumferential static friction of the i-th coil must be no greater than the maximum interlayer circumferential static friction of the i-th coil, or the deviation between the interlayer circumferential static friction of the i-th coil and the maximum interlayer circumferential static friction of the i-th coil is minimal.

[0104] In some embodiments, step S21 includes steps S211 to S212, wherein:

[0105] Step S211 : determining the first external tension of a second target layer of coil based on the first external tension of the last layer of coil; wherein the second target layer of coil is the coil above the last layer of coil.

[0106] Here, the first external tension of the second target layer of coil is inferred based on the first external tension of the last layer of coil. During implementation, the interlayer circumferential static friction of the second target layer of coil is first determined based on the first external tension of the last layer of coil. The first external tension of the second target layer of coil is then determined based on the interlayer circumferential static friction of the second target layer of coil and the maximum interlayer circumferential static friction of the second target layer of coil. For example, the interlayer circumferential static friction of the j-1 layer of coil (corresponding to the second target layer of coil) is first determined based on the first external tension of the j-1 layer of coil (corresponding to the last layer of coil). The first external tension of the j-1 layer of coil is then determined based on the interlayer circumferential static friction of the j-1 layer of coil and the maximum interlayer circumferential static friction of the j-1 layer of coil.

[0107] In some embodiments, step S211 includes steps S221 to S222, wherein:

[0108] Step S221 : determining the interlayer circumferential static friction force of the second target layer of coiled material based on the first external tension of the last layer of coiled material.

[0109] Here, the first external tension required for the last layer of coil should be greater than the interlayer static friction of the second target layer of coil. In practice, when winding the last layer of coil, the driving force required for the second target layer of coil to pull the last layer of coil (i.e., the first external tension of the last layer of coil) should be no less than the sum of the internal tension of the second target layer of coil and the interlayer static friction of the layer above the second target layer of coil. The internal tension represents the actual tension experienced by the internal coil when winding the last layer of coil. For example, when winding the jth layer of coil (corresponding to the aforementioned last layer of coil), the driving force required for the j-1th layer of coil (corresponding to the aforementioned second target layer of coil) to pull the jth layer of coil (i.e., the first external tension of the jth layer of coil) should be no less than the sum of the internal tension of the j-1th layer of coil and the interlayer static friction of the j-2th layer of coil (corresponding to the aforementioned second target layer of coil). The internal tension represents the actual tension borne by the inner layer of the coil when the j-th layer of the coil is rolled up.

[0110] FIG2B is a schematic diagram of the external tension required for the i-th layer of coil to pull the j-th layer of coil provided by an embodiment of the present disclosure. As shown in FIG2B , during the winding process, when the j-th layer of coil is wound, 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 static friction force f between the i-th layer of coil i,j sum.

[0111] In some embodiments, step S221 includes steps S231 to S232, wherein:

[0112] Step S231 : determining a second external tension of the second target layer of coil based on the first external tension of the last layer of coil, the winding diameter of the last layer of coil, and the winding diameter of the second target layer of coil.

[0113] Here, based on the relationship between the winding diameters of each layer of coil, the first external tension of the last coil can be converted to the second external tension for winding the remaining layers of coil. For example, the first external tension of the jth coil (corresponding to the last coil) can be converted to the second external tension for winding the ith coil, where i is a positive integer less than j.

[0114] In some embodiments, step S231 includes steps S2311 to S2312, wherein:

[0115] Step S2311: Determine a first ratio between the winding diameter of the last layer of coil and the winding diameter of the second target layer of coil.

[0116] Here, the first ratio is the ratio between the winding diameter of the last layer of coil and the winding diameter of the second target layer of coil. In practice, if the last layer of coil is the jth layer of coil, then the first ratio αi1 between the winding diameter of the jth layer of coil and the i-th layer of coil can be obtained by the following formula (2-1), that is:

[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 practice, 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] Then, according to the above formula (2-1), the first ratio α(j-1)1 between the winding diameter of the last layer of coil and the winding diameter of the second target layer of coil can be obtained, which can be:

[0119] Step S2312: Determine the second external tension of the second target layer of coil based on the first ratio and the first external tension of the last layer of coil.

[0120] Here, the second external tension of the second target layer of coils can be the first product, a weighted sum of the first products, etc. The first product refers to the product of the first ratio and the first external tension of the last layer of coils. For example, the first product can be used as the second external tension of the second target layer of coils, i.e., the second external tension of the second target layer of coils can be the product of the first ratio and the first external tension of the last layer of coils. For example, the second external tension of the j-1 layer of coils (corresponding to the aforementioned second target layer of coils) can be the product of the first ratio and the first external tension of the j-1 layer of coils (corresponding to the aforementioned last layer of coils), where the first ratio is the ratio between the winding diameter of the j-1 layer of coils and the winding diameter of the j-1 layer of coils.

[0121] In some embodiments, if the last layer of coil is the jth layer of coil, the second external tension T of the i-th layer of coil can be obtained by the following formula (2-2): i2 , that is: T i2 =T j *αi1 (2-2);

[0122] Wherein, αi1 is the first ratio between the winding diameter of the j-th layer coil and the winding diameter of the i-th layer coil, 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] Then, according to the above formula (2-2), the second external tension T of the second target layer coil can be obtained:(j-1)2 , which can be: T j *α(j-1)1.

[0124] Step S232: Determine the interlayer circumferential static friction force of the second target layer coil based on the second external tension of the second target layer coil and the internal tension of the second target layer coil.

[0125] Here, the interlayer circumferential static friction of the second target layer coil can be the third difference, a weighted value of the third difference, or the like. The third difference refers to the difference between the second external tension of the second target layer coil and the internal tension of the second target layer coil. For example, the third difference is used as the interlayer circumferential static friction of the second target layer coil.

[0126] In some embodiments, if the last layer of coil is the jth layer of coil, 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 , that is: 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] Then, according to the above formula (2-3), the interlayer circumferential static friction force f of the second target layer of coil can be obtained: j-1,j , which can be: T (j-1)2 -T j-1,j .

[0129] In some embodiments, step S232 includes steps S241 to S243, wherein:

[0130] Step S241 : Determine the internal tension of the second target layer coil based on the circumferential stress of the second target layer coil.

[0131] Here, the circumferential stress of the i-th coil represents the stress experienced by the i-th coil in the circumferential direction. In practice, factors influencing the circumferential stress of the i-th coil may include, but are not limited to, the first external tension during winding of the i-th coil, the in-coil circumferential stress exerted on the i-th coil by each subsequent coil, and the like.

[0132] During the actual winding process, the coil is stretched by external tension, generating radially inward pressure on the inner coil. As the number of winding layers increases, the pressure on the inner coil increases. Therefore, the inner tension of the inner coil is not equal to the external tension applied during winding, but decreases as the number of winding layers increases. After winding the jth layer, the jth layer will generate a uniform radial inward pressure, which will generate circumferential stress within the coil for the previous j-1 layers.

[0133] FIG2C is a schematic diagram of the internal tension of a first layer of coiled material provided by an embodiment of the present disclosure. As shown in FIG2C , as the winding diameter R increases, the internal tension T of the first layer of coiled material increases. 1,n It will continue to decrease, where n represents the total number of coiled layers. When the coiling diameter R is close to 500mm, the internal tension of the first layer of coiled material is 0. If the coiling diameter continues to increase, the internal tension of the first layer of coiled material will be less than 0, and the coiled material will wrinkle.

[0134] The internal tension of the second target layer coil can be the product of the hoop stress of the second target layer coil and the thickness of the coil, or a weighting of the product, etc. For example, the internal tension of the second target layer coil is the product of the hoop stress of the second target layer coil and the thickness of the coil.

[0135] In some embodiments, if the last layer of coil is the jth layer of coil, the internal tension T of the i-th layer of coil can be obtained by the following formula (2-4): i,j , that is: 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] Then, according to the above formula (2-4), the internal tension T of the second target layer can be obtained: j-1,j , can be: θ(j-1,j) *h.

[0138] In some embodiments, step S241 includes steps S251 to S253, wherein:

[0139] Step S251 : determining the circumferential stress of the second target layer coil based on the in-coil circumferential stress of the second target layer coil.

[0140] Here, the circumferential stress within the coil refers to the stress in the circumferential direction of a certain inner layer of coil during or after the winding process. In practice, the circumferential stress within the coil is independent of the coil thickness. According to the superposition principle, the first external tension during winding of the i-th coil layer, the circumferential stress within the coil generated by each subsequent coil layer on the i-th coil layer, and so on, all affect the circumferential stress within the i-th coil layer. In practice, the circumferential stress within the i-th coil layer can be a first sum value, a weighted sum of the first sum values, and so on. The first sum value is the sum of the average external tension during winding of the i-th coil layer and the circumferential stress within the coil generated by each subsequent coil layer on the i-th coil layer, and the average external tension within the i-th coil layer is the ratio of the first external tension within the i-th coil layer to the coil thickness. For example, the circumferential stress within the i-th coil layer can be the first sum value.

[0141] In some embodiments, if the last coil is the jth coil, the circumferential stress σ of the i-th coil can be obtained by the following formula (2-5): θ(i,j) ,Right now:

[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 circumferential stress within the coil generated by the kth layer of coil on the ith layer of coil, where i is a positive integer not greater than j-1.

[0143] Then, according to the above formula (2-5), the circumferential stress σ of the second target layer coil can be obtained: θ(j-1,j) , which can be the average external tension of the second target layer of coiled material during winding The internal circumferential stress σ′ generated by the last layer of coil on the second target layer of coil θ(j-1,j) The sum between, that is:

[0144] In some embodiments, step S251 includes steps S2511 to S2512, wherein:

[0145] Step S2511: Determine the in-roll circumferential stress of the second target layer coil based on the first external tension of the second target layer coil, the winding diameter of the second target layer coil, and the winding diameter of the last layer coil.

[0146] 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.

[0147] FIG2D is a schematic diagram of a coil winding process provided by an embodiment of the present disclosure. As shown in FIG2D , when the coil is wound to the jth layer, the winding diameter of the coil is R j, the jth layer of coil will generate a uniform radial pressure P inward in the radial direction j , the uniform radial pressure P j Will generate the circumferential stress σ′ in the coil of the i-th layer θ(i,j ) and radial stress σ′ in the roll r(i,j) The radial stress within the coil refers to the stress in the radial direction of each layer inside the coil during or after winding. During the winding process, each layer of coil will cause an inward pressure on any previously wound layer of coil.

[0148] In some embodiments, according to the principles of elastic mechanics, the external tension of the wound 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 coil of the i-th layer θ(i,j) It can be expressed by the following formula (2-6):

[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 of the coil and the initial winding diameter of the reel. Different coils have different Poisson's ratios.

[0150] In some embodiments, the impact factor λ can be determined by the following formula (2-7), namely: λ = (1-2μ) × R0 2 (2-7);

[0151] Among them, μ is the Poisson's ratio corresponding to the coil, and R0 is the initial winding diameter of the winding shaft.

[0152] In practice, if the last layer of coil is the jth layer of coil, then the circumferential stress σ′ of the second target layer of coil can be obtained according to the above formula (2-6): θ(j-1,j) .

[0153] Step S2512: Determine the circumferential stress of the second target layer coil based on the second external tension of the second target layer coil and the circumferential stress within the coil of the second target layer coil.

[0154] Here, factors influencing the circumferential stress of the second target layer coil may include, but are not limited to, the first external tension of the second target layer coil, the internal circumferential stress of the second target layer coil generated by the last coil, etc. In practice, if the last coil is the jth coil, then the circumferential stress σ of the second target layer coil can be obtained according to the above formula (2-5): θ(j-1,j) .

[0155] Step S252: Determine the product of the circumferential stress of the second target layer coil and the thickness of the coil.

[0156] Here, the thicknesses of different coils may be the same or different.

[0157] Step S253: Determine the internal tension of the second target layer coil based on the product.

[0158] Here, the internal tension of the second target layer of coil can be the product, the weighted product, etc. For example, the internal tension of the second target layer of coil is the product. In practice, if the last layer of coil is the jth layer of coil, then the internal tension T of the second target layer of coil can be obtained according to the above formula (2-4): j-1,j .

[0159] In some embodiments, since the thickness of the coil is relatively small, if the last coil is the jth coil, then according to the above formulas (2-5) and (2-6), and by integrating the above formula (2-4), the following formula (2-8) is simplified, namely:

[0160] Among them, T i,j is the internal tension of the i-th layer of coil, 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 coil diameter of the j-th layer of coil, h is the thickness of the coil, λ is the influence factor, and i is a positive integer not greater than j-1.

[0161] Then, according to the above formula (2-8), the internal tension T of the second target layer coil is j-1,j , which can be

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

[0163] Here, the first difference is a difference between the second outer tension of the second target layer web and the inner tension of the second target layer web.

[0164] Step S243: Determine the interlayer circumferential static friction force of the second target layer of coiled material based on the first difference.

[0165] Here, the interlayer circumferential static friction force of the second target layer of coiled material can be the first difference, a weighted value of the first difference, etc. For example, the first difference is used as the interlayer circumferential static friction force of the second target layer of coiled material. In practice, if the last layer of coiled material is the jth layer of coiled material, then the interlayer circumferential static friction force f of the second target layer of coiled material can be obtained according to the above formula (2-3): j-1,j .

[0166] Step S222: Determine a first external tension of the second target layer coil based on the interlayer circumferential static friction of the second target layer coil and the maximum interlayer circumferential static friction of the second target layer coil.

[0167] Here, the first external tension of the second target layer web can be determined based on a second difference value of the second target layer web, wherein the second difference value is the difference between the maximum circumferential static friction between the layers of the second target layer web and the circumferential static friction between the layers of the second target layer web. In practice, the second difference value should be no less than 0, or the second difference value should be 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 , that is: F i =F imax -f i,j (2-9);

[0169] Among them, F imax is the maximum circumferential static friction between 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 wound, and i is a positive integer not greater than j-1.

[0170] Then, if the last layer of coil is the jth layer of coil, according to the above formula (2-9), the second difference F for the second target layer of coil is j-1 , which can be (F (j-1)max -f j-1,j ).

[0171] In some embodiments, 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 second target layer coil and the circumferential static friction force between layers of the second target layer coil.

[0173] Here, the second difference is the difference between the maximum circumferential static friction between the layers of the second target layer coil and the circumferential static friction between the layers of the second target layer coil. In implementation, the second difference F of the second target layer 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: Determine the maximum circumferential static friction force between the layers of the second target layer coil based on the interlayer pressure of the second target layer coil.

[0176] Here, the maximum circumferential static friction force between layers of the second target layer of web material can be a second product, a weighted sum of the second products, or the like. The second product is the product of the interlayer pressure of the second target layer of web material and the coefficient of static friction of the web material. For example, the second product is used as the maximum circumferential static friction force between layers of the second target layer of web material.

[0177] In some embodiments, if the last layer of coiled material is the jth layer of coiled material, the maximum circumferential static friction force F between layers of the i-th layer of coiled material can be determined according to the following formula (2-10): imax , that is: F imax =μ*N (i,j) (2-10);

[0178] 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.

[0179] During implementation, the maximum circumferential static friction force F between the layers of the second target layer of coil can be obtained according to the above formula (2-10): (j-1)max .

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

[0181] Step S261 : determining the interlayer pressure of the second target layer of coil based on the first external tension of the last layer of coil and the winding diameter of the second target layer of coil to the winding diameter of the last layer of coil.

[0182] Here, the interlayer pressure of the second target layer of coil refers to the pressure acting on the second target layer of coil after the last coil is wound. In practice, based on the derivation of the internal tension of the i-th coil, it can be concluded that the interlayer pressure acting on the i-th coil after the last coil is wound should be the sum of the pressures exerted on the i-th coil by each subsequent coil. In practice, if the last coil is the j-th coil, the interlayer pressure of the i-th coil can be determined according to the following formula (2-11), namely:

[0183] Among them, R i is the winding diameter of the i-th layer of coil, R j is the coil diameter of the j-th layer of coil, h is the thickness of the coil, λ is the influence factor, and i is a positive integer not greater than j-1.

[0184] During implementation, the interlayer pressure N of the second target layer of coil can be obtained according to the above formula (2-11): (j-1,j) .

[0185] During the actual winding process, the coil is in a stretched state due to the external tension, which will generate a radially inward pressure on the inner layer of the coil. As the number of winding layers increases, the pressure on the inner layer of the coil will continue to accumulate. Figure 2E is a schematic diagram of the interlayer pressure of the first layer of coil provided by an embodiment of the present disclosure. As shown in Figure 2E, 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 N of the first layer of coiled material 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 stabilizes as the radius of the roll increases.

[0186] Step S262: Determine the maximum circumferential static friction force between layers of the second target layer of coil based on the static friction coefficient of the coil and the interlayer pressure of the second target layer of coil.

[0187] Here, different coils correspond to different or the same static friction coefficients. In practice, if the last layer of coil is the jth layer of coil, then the maximum circumferential static friction F between the layers of the second target layer of coil can be obtained according to the above formula (2-10): j-1 .

[0188] Step S2222: Determine a first external tension of the second target layer coil based on the second difference.

[0189] Here, the second difference should be no less than 0, or close to 0. In practice, if the last layer of coil is the jth layer of coil, then 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:

[0190] 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 coil diameter of the j-th layer of coil, h is the thickness of the coil, λ is the influence factor, and i is a positive integer not greater than j-1.

[0191] In practice, if the last layer of coiled material is the jth layer of coiled material, then 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 Not less than 0, obtain the first external tension T of the i-th layer of coil i , so that the i-th layer of coil does not slip circumferentially between layers. Alternatively, F i Close to 0, the first external tension T of the i-th layer of coil is obtained i , so as to minimize the circumferential slippage between the layers of the i-th layer of coil, thereby reducing the possibility of the barrel phenomenon.

[0192] Then, according to the above formula (2-12), according to the second difference F of the second target layer coil j-1 Not less than 0 or close to 0, the first external tension T of the second target layer coil can be obtained j-1 .

[0193] Step S212: For each third target layer of coil in the coil sequence, determine the first external tension of the third target layer of coil based on the first external tension of the next layer of coil of the third target layer to the first external tension of the last layer of coil; wherein the third target layer of coil is a layer of coil in the coil sequence other than the last layer of coil and the second target layer of coil.

[0194] Here, the third target layer of coils may include at least one layer of coils. For example, if the coil sequence includes j layers of coils, then the third target layer of coils includes the first j-2 layers of coils, that is, the first layer of coils to the j-2 layer of coils.

[0195] The method for determining the first external tension of the third target layer coil is similar to the method for determining the first external tension of the second target layer coil. During implementation, 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. When implementing, 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 each layer of coil in the coil sequence; 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 S121. When implementing, the specific implementation of the above step S121 can be referred to.

[0200] In the embodiment of the present disclosure, the external tension of the current layer of coil is determined in real time based on the first external tension of each layer of coil in a predetermined coil sequence 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 accuracy of the external tension is improved while shortening the time for determining the external tension.

[0201] FIG3A is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure, which is applied to a computer device (e.g., a host computer). As shown in FIG3A , 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 coils and displaying information. The first interface may include, but is not limited to, areas for configuring operations, operational controls, and the like. The areas for configuring operations may include, but are not limited to, at least one of an area for configuring tension and an area for adjusting tension. During implementation, those skilled in the art may determine the number of areas for configuring operations within the first interface, as well as the specific layout of each area within the first interface, based on practical circumstances; this disclosure does not limit these areas.

[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 can 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 each layer of coil in the coil sequence. The information display control is used to display fitting information, which is obtained by fitting the first external tension of each layer of coil in the coil sequence 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 each layer of coil in the coil sequence 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 can 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 interface interaction capabilities, such as a laptop computer, mobile phone, tablet computer, PDA, personal digital assistant, digital television, or desktop computer. During implementation, the computer device displaying the first interface and the computer device executing the tension determination method can be the same or different, and this is not a limitation. For example, the computer device executing the tension determination method can be a slave computer, and the computer device displaying 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 a webpage displayed in a browser running on the laptop computer. For another example, the computer device executing the tension determination method and the computer device displaying the first interface can both be a master computer.

[0207] FIG3B is a schematic diagram of a first interface provided by an embodiment of the present disclosure. As shown in FIG3B , the first interface 30 includes a configuration area 301, a tension management control 302, and a roll management control 303. The configuration area 301 includes at least a first display area 304 and a tension configuration area 305. The tension configuration area 305 includes a roll input control 3051 and a tension determination control 3052. The roll input control 3051 is used to input the name of the roll, and the tension determination control 3052 is used to display the first external tension and corresponding winding diameter of the first j layers of rolls (corresponding to each layer of the roll sequence) 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 roll management control 303 is used to display the roll management interface in the configuration area 301.

[0208] Step S32: In response to the triggering operation of the tension determination control, the first external tension for 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 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] The triggering operation for the tension determination control can be any suitable triggering operation, such as a gesture or voice. For example, clicking the tension determination control. The second configuration information can include, but is not limited to, the coil identification information, the first external tension of the fourth target layer 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. The fourth target layer coil can be a layer of coil in the coil sequence, such as the last layer of coil.

[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 the web based on the second configuration information of the web in response to triggering the tension determination control. The specific process for determining each first external tension can be found in the detailed implementation of step S21 above. The method for determining the external tension of the current layer of the web can be found in the detailed implementation of step S12 above.

[0211] In the embodiment 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, and further reducing the waste of coils while 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 a gesture, voice, etc. For example, clicking the roll material management control 303 in FIG3B .

[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 areas where configuration operations can be performed may include, but are 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 to configure the relevant properties of the newly added 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 operation of editing existing coils may include, 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 in the coil management interface where configuration operations can be performed, as well as the specific layout of each area in the coil management interface where configuration operations can be performed, based on actual circumstances, and the embodiments of the present disclosure do not limit this.

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

[0217] The operation control can be any suitable operable control. 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 control, etc. During implementation, those skilled in the art can determine the number of operation controls and the location of each operation control in the roll material management interface based on actual circumstances, and the embodiments of this disclosure are not limited thereto. Roll material configuration controls may include, but are 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 is a schematic diagram of a first interface provided by an embodiment of the present disclosure. As shown in Figure 3C, the first interface includes a configuration area 301, a tension management control 302, and a coil management control 303. Configuration area 301 displays the coil management interface, which includes a add control 311, an edit control 312, a delete control 313, a save control 314, and a second display area 315. Add control 311 is used to add coil configuration information. Edit control 312 is used to edit the configuration information of a particular coil in list 315. Delete control 313 is used to delete the configuration information of at least one coil in list 315. Save control 314 is used to save the configuration information of each coil in list 315. Second display area 315 displays existing coil configuration information, which can be displayed in a list format during implementation. In practice, the list includes at least one row and at least one column, with each row representing an existing coil and each column representing certain configuration information of the existing coil, such as the coil name, the coil Poisson's ratio, etc. In some embodiments, the list also includes a page turn control and a scroll control, with the page turn control being used to turn pages in the list and the scroll control being used to scroll the contents of the list.

[0220] Step S34: in response to receiving a triggering 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 controls may include, but are not limited to, a new control, an edit control, and the like. In some embodiments, in response to a triggering operation on the new control 311 in FIG. 3C , a coil configuration interface is displayed. The coil configuration interface may be located within the coil management interface or may be independent of the coil management interface (e.g., 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 fourth target layer 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, and the like. During implementation, a configuration control for the corresponding coil attribute may be set within the coil configuration interface, and the configuration information of the corresponding coil may be obtained through the configuration control for the coil attribute. For example, when the coil material configuration interface includes a coil material name control, the name information of the coil material is obtained in response to the input on the coil material name control, wherein the coil material name control can be an input box, an edit box, a drop-down box, or any other control that can realize the function of configuring the name of the coil material. The user can independently set the implementation method of the coil material name control according to actual needs, and the embodiment of the present disclosure is not limited to this.

[0222] Figure 3D is a schematic diagram of a coil configuration interface provided by an embodiment of the present disclosure. As shown in Figure 3D, the coil configuration interface 32 includes a coil name control 321, an external tension control 322 for setting the layer of coil, a winding diameter control 323 for setting the 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 triggering the edit control 312 in Figure 3C, the roll configuration interface 32 in Figure 3D is displayed, and the property information of the target roll (a roll in the second display area 315 in Figure 3C) is displayed in each property control of the roll configuration interface 32.

[0224] In some embodiments, in response to triggering the save control 314 in FIG. 3C , the list 315 is saved to an information repository. The information repository is any suitable repository configured to store information, and in practice, may be a database, a data table, or the like. In some embodiments, the information repository may be located in a host computer or other computer device, and this is not limited in the present disclosure.

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

[0226] In the embodiment 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 the information library to provide data support for the subsequent calculation of the optimal external tension of the coil.

[0227] In some embodiments, 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, 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 at least one layer of the at least one layer of coil.

[0229] Here, the triggering operation can be any suitable operation. For example, a gesture, voice, etc. For example, clicking an information display control. In some embodiments, the fitting results can be displayed in the first interface, where the fitting results can include but are 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 can be determined by a host computer or other computer device. In some embodiments, the host computer, in response to a triggering operation on the information display control, performs fitting on the first external tension of the target layer coil and the corresponding winding diameter to obtain the fitting information corresponding to the coil. The target layer coil includes m layers of coil, where m is a positive integer.

[0231] In some embodiments, the first display area may further display fitting information. In implementation, the first display area may display the first external tension of at least one layer of coiled material 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 the fitting information corresponding to the coil, the first external tension of the first j layers of coil (corresponding to each layer of coil in the aforementioned coil sequence) and at least one of the corresponding winding diameters, etc.

[0233] FIG3E is a schematic diagram of a first interface provided by an embodiment of the present disclosure. As shown in FIG3E , 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 fitting results 3042. The information display control 3061 is used to display the fitting results 3042 (e.g., fitting coefficients, fitting curves, etc.) in the first display area 304. The list 3041 displays the first external tensions and corresponding winding diameters of the first j layers of coils (corresponding to each layer in the coil sequence).

[0234] In the disclosed embodiment, 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] FIG4A is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure, which is applied to a computer device (e.g., a slave computer). As shown in FIG4A , the method includes steps S41 to S43, 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 used for configuring coils and displaying information. The second interface may include, but is not limited to, areas for configuring operations, control panels, and the like. Control panels can be any suitable operable control. For example, a coil configuration panel is used to import first coil configuration information. This first coil configuration information may include, but is not limited to, at least one of at least one winding diameter and its corresponding first external tension, and corresponding coil fitting information.

[0238] The third display area is used to display at least the external tension of the current layer of 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] FIG4B is a schematic diagram of a second interface provided by an embodiment of the present disclosure. As shown in FIG4B , the second interface 400 includes a coil configuration control 401 and a third display area 402. The coil configuration control 401 is used to input first configuration information of the target coil, wherein the first configuration information includes fitting information corresponding to the target coil and / or the first external tension and corresponding winding diameter of the first j layers of the target coil (corresponding to each layer of the coil in the aforementioned coil sequence). 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 triggering operation can 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 can be imported into the electronic device.

[0243] In some embodiments, the third display area may further 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 web 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 the winding shaft.

[0245] Here, the determined external tension of the current layer of coiled material can be displayed in the third display area. For example, the external tension of the current layer of coiled material is displayed in the third display area 402 of the second interface of FIG. The method for determining the external tension of the current layer of coiled material can be referred 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 external tension of the current layer of coil can be displayed in real time using the display device of the lower computer.

[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, and further reducing the waste of coils while 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 a practical scenario, taking the determination of the external tension of a pole piece (ie, a coil) as an example for explanation.

[0249] In related technologies, as the winding diameter increases, the internal tension of the inner layer will continue to decrease. If a constant tension mode is adopted, when the internal tension of the inner layer is reduced to a certain extent, the maximum circumferential static friction force between the inner layers will be less than the circumferential static friction force 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 embodiments provide a tension determination method that calculates the external tension of the current layer of electrode pieces in real time based on the first configuration information of the electrode pieces (e.g., the optimal external tension and corresponding winding diameter of each layer of electrode pieces in the coil sequence, or the fitting information corresponding to the electrode pieces) and the winding diameter of the current layer of electrode pieces. The external tension of the current layer of electrode pieces is used to wind the current layer of electrode pieces. In this way, compared to the constant tension mode, the degree of interlayer slippage of the inner layer of electrode pieces is reduced, thereby reducing the possibility of barrel phenomenon, thereby reducing electrode waste and improving product reliability.

[0251] The following describes the implementation process of the method provided in the embodiment of the present disclosure 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 cannon 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 cannon 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, the roll will probabilistically exhibit the cannon phenomenon. If the thickness of the winding pole piece is inconsistent 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] FIG5A is a schematic diagram of an axial interference provided by an embodiment of the present disclosure. As shown in FIG5A , due to the different thickness H (H1>H2) of the winding 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 winding pole piece. The pressure P generates an axial component force P along the axial direction X. X And the 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 component P X If interlayer circumferential slip occurs, the static friction force F along the axial direction is X Greater than the axial force P X .

[0255] Therefore, to solve 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 causes the second difference of all layers to be no less than 0 (i.e., the circumferential friction between the layers is no greater than the maximum circumferential static friction between the layers), then the axial interference will be suppressed and will not manifest, and the barrel phenomenon will not occur. Figure 5B is a schematic diagram of the relationship between the second difference and the winding diameter provided by an embodiment of the present disclosure. As shown in Figure 5B, as the winding diameter R continues to increase, the second difference F becomes smaller and smaller until it approaches 0. For example, when the winding diameter R is 250 mm, the second difference F is close to 0 N.

[0257] For another example, if the input external tension cannot make the second difference of all layers not less than 0, then interlayer circumferential slip will inevitably occur. Therefore, the only way to minimize the degree of interlayer circumferential slip is to minimize the axial shape uncertainty and reduce the possibility of the barrel phenomenon. Figure 5C is a schematic diagram of the relationship between the second difference and the winding diameter provided by an embodiment of the present disclosure. As shown in Figure 5C, 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 150mm, 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 is such that the second difference of the corresponding layer of pole pieces is not less than 0, or the second difference is close to 0.

[0260] FIG5D is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure, which is applied to a host computer. As shown in FIG5D , 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 electrode piece, wherein the second configuration information of at least one electrode 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 electrode piece, the first external tension of the j-th layer electrode piece (corresponding to the aforementioned fourth target layer of coiled material), the initial winding diameter of the winding shaft, the static friction coefficient of the electrode piece, the Poisson's ratio of the electrode piece, the thickness of the electrode piece, etc.

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

[0264] Here, the at least one electrode piece includes a newly added electrode piece, an existing electrode piece, etc. During implementation, a new electrode piece can be added using the add 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 particular electrode piece displayed in the second display area can be edited using the 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, a tension determination control, an information display control, a tension output control, and a first display area are displayed in the configuration area of ​​the first interface;

[0266] Here, the first display area is used to display at least the optimal external tension and corresponding winding diameter of the first j layers of pole pieces of the target pole piece (corresponding to each layer of coil in the aforementioned coil sequence).

[0267] Step S504: In response to the triggering operation of the tension determination control, the second configuration information of the target pole piece is obtained from the information library, and based on the second configuration information of the target pole piece, the optimal external tension of the first j-1 layer of pole pieces (corresponding to the aforementioned first target layer of coiled material) is determined, and the optimal external tension of the first j-1 layer of pole pieces and the corresponding winding diameter are displayed 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 pole pieces.

[0269] Step S505: In response to a trigger operation on the information display control, a fitting coefficient (i.e., fitting information) of the target electrode piece is generated based on the optimal external tension and corresponding winding diameter of the first j layers of electrode pieces, 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, deriving first configuration information of the target pole piece.

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

[0273] (3) Usage stage

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

[0275] FIG5E is a schematic diagram of an implementation flow of a tension determination method provided by an embodiment of the present disclosure, which is applied to a lower computer. As shown in FIG5E , 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 a triggering operation on the coil configuration control, first configuration information of the target electrode is imported and displayed in the third display area;

[0278] Step S513: In response to receiving the external tension of the current layer of pole pieces, the external tension of the current layer of pole pieces is displayed in the third display area; wherein the external tension of the current layer of pole pieces is used to reel the current layer of coil onto the reeling shaft.

[0279] FIG5F is a schematic diagram of an implementation flow of a tension determination method provided in an embodiment of the present disclosure, which is applied to a lower computer. As shown in FIG5F , the method includes steps S521 to S522, wherein:

[0280] Step S521, obtaining the winding diameter of the winding shaft for winding the electrode 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 that matches 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.

[0283] When the first configuration information includes the fitting information corresponding to the target pole piece, the fitting information and the winding diameter of the current layer pole piece are input into the mapping relationship of formula (1-2) to obtain the external tension of the current layer pole piece.

[0284] 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 may be used to display the determined external tension of the pole piece of the current layer in real time.

[0285] Based on the above embodiments, an embodiment of the present disclosure provides a tension determination device. FIG6 is a schematic diagram of the structure of a tension determination device provided by an embodiment of the present disclosure. As shown in FIG6 , the tension determination device 60 includes a first acquisition part 61 and a determination part 62, wherein:

[0286] The first acquiring part 61 is configured to acquire the winding diameter of the current layer of coiled material wound by the winding shaft;

[0287] The determining portion 62 is configured to determine the external tension of the current coil layer based on the winding diameter of the current coil layer; wherein the external tension of the current coil layer is used to wind the current coil layer onto the winding shaft.

[0288] In some embodiments, the determination portion 62 is further configured 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 and the corresponding winding diameter of each layer of coil in the coil sequence, 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 coil in the coil sequence, and the coil sequence includes at least one layer of coil.

[0289] In some embodiments, the determination part 62 is further configured as one of the following: when the first configuration information includes the first external tension of each layer of coil in the coil sequence and the corresponding winding diameter, the target first external tension that matches the winding diameter of the current layer of coil is determined from the first external tension of each layer of coil in the coil sequence, 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 target layer of coil in the coil sequence is determined based on the first external tension of the last layer of coil in the coil sequence, and the first target layer of coil includes all layers of coil in the coil sequence except the last layer of coil; when 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.

[0290] In some embodiments, the device further includes a second determination part, which is configured to determine the first external tension of the first target layer of coils based on the first external tension of the last layer of coils in the coil sequence; wherein the first target layer of coils includes all layers of coils in the coil sequence except the last layer of coils.

[0291] In some embodiments, the second determination portion is further configured to: determine the first external tension of the second target layer of coil based on the first external tension of the last layer of coil; wherein the second target layer of coil is the coil above the last layer of coil; for each third target layer of coil in the coil sequence, determine the first external tension of the third target layer of coil based on the first external tension of the next layer of coil of the third target layer to the first external tension of the last layer of coil; wherein the third target layer of coil is a layer of coil in the coil sequence other than the last layer of coil and the second target layer of coil.

[0292] In some embodiments, the second determination part is further configured to: determine the interlayer circumferential static friction of the second target layer coil based on the first external tension of the last layer coil; determine the first external tension of the second target layer coil based on the interlayer circumferential static friction of the second target layer coil and the interlayer maximum circumferential static friction of the second target layer coil.

[0293] In some embodiments, the second determination portion is further configured to: determine the second external tension of the second target layer of coil based on the first external tension of the last layer of coil, the winding diameter of the last layer of coil, and the winding diameter of the second target layer of coil; determine the interlayer circumferential static friction of the second target layer of coil based on the second external tension of the second target layer of coil and the internal tension of the second target layer of coil.

[0294] In some embodiments, the second determination part is further configured to: determine a first ratio between the winding diameter of the last layer of coil and the winding diameter of the second target layer of coil; and determine a second external tension of the second target layer of coil based on the first ratio and the first external tension of the last layer of coil.

[0295] In some embodiments, the second determination portion is further configured to: determine the internal tension of the second target layer coil based on the circumferential stress of the second target layer coil; determine a first difference between the second external tension of the second target layer coil and the internal tension of the second target layer coil; and determine the interlayer circumferential static friction of the second target layer coil based on the first difference.

[0296] In some embodiments, the second determination portion is further configured to: determine the circumferential stress of the second target layer coil based on the circumferential stress within the coil of the second target layer coil; determine the product between the circumferential stress of the second target layer coil and the thickness of the coil; and determine the internal tension of the second target layer coil based on the product.

[0297] In some embodiments, the second determination portion is further configured to: determine the in-roll circumferential stress of the second target layer coil based on the first external tension of the second target layer coil, the winding diameter of the second target layer coil, and the winding diameter of the last layer coil; determine the circumferential stress of the second target layer coil based on the second external tension of the second target layer coil and the in-roll circumferential stress of the second target layer coil.

[0298] In some embodiments, the second determining portion is further configured to: determine a second difference between the maximum interlayer circumferential static friction of the second target layer coil and the interlayer circumferential static friction of the second target layer coil; and determine a first external tension of the second target layer coil based on the second difference.

[0299] In some embodiments, the apparatus includes a third determining portion configured to determine the maximum interlayer circumferential static friction force of the second target layer web based on the interlayer pressure of the second target layer web.

[0300] In some embodiments, the third determination part is further configured to: determine the interlayer pressure of the second target layer of coil based on the first external tension of the last layer of coil and the winding diameter of the second target layer of coil to the winding diameter of the last layer of coil; determine the maximum circumferential static friction between the layers of the second target layer of coil based on the static friction coefficient of the coil and the interlayer pressure of the second target layer of coil.

[0301] 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.

[0302] Based on the above embodiments, an embodiment of the present disclosure provides a tension determination device. FIG7 is a schematic diagram of the structure of a tension determination device provided by an embodiment of the present disclosure. As shown in FIG7 , the tension determination device 70 includes a first display portion 71 and a second display portion 72, wherein:

[0303] The first display portion 71 is configured to display a first interface; wherein the first interface includes a tension determination control and a first display area;

[0304] The second display portion 72 is configured to display the first external tension of at least one layer of coil in the first display area in response to a triggering operation on the tension determination control; wherein each first external tension is determined based on the second configuration information of the coil, and each first external tension is used to cooperate with the winding diameter of the current layer of coil to determine the external tension for winding the current layer of coil onto the winding shaft, and the second configuration information includes at least one of the following: the first external tension of the fourth target layer of coil, the winding diameter of the fourth target layer of coil, the initial winding diameter, and the static friction coefficient of the coil.

[0305] In some embodiments, the first interface also includes a roll material management control, and the device also includes a fifth display portion, which is configured to display the roll material management interface in response to a triggering 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 triggering operation on the roll material configuration control, the second configuration information of the roll material is obtained, and the second configuration information of the roll material is displayed in the second display area.

[0306] In some embodiments, the first interface also includes an information display control, and the device also includes a sixth display part, which is configured to display the fitting information corresponding to the coil in the first display area in response to a triggering 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 at least one layer of the at least one layer of coil.

[0307] In some embodiments, the device further includes a fifth determination part, which is configured to determine the first external tension of the first target layer of coils based on the first external tension of the last layer of coils in the coil sequence; wherein the first target layer of coils includes all layers of coils in the coil sequence except the last layer of coils.

[0308] In some embodiments, the fifth determination part is further configured to: determine the first external tension of the second target layer of coil based on the first external tension of the last layer of coil; wherein the second target layer of coil is the previous layer of coil of the last layer of coil; for each third target layer of coil in the coil sequence, determine the first external tension of the third target layer of coil based on the first external tension of the next layer of coil of the third target layer to the first external tension of the last layer of coil; wherein the third target layer of coil is a layer of coil in the coil sequence except the last layer of coil and the second target layer of coil.

[0309] In some embodiments, the fifth determination part is further configured to: determine the interlayer circumferential static friction of the second target layer coil based on the first external tension of the last layer coil; determine the first external tension of the second target layer coil based on the interlayer circumferential static friction of the second target layer coil and the interlayer maximum circumferential static friction of the second target layer coil.

[0310] In some embodiments, the fifth determination part is further configured to: determine the second external tension of the second target layer of coil based on the first external tension of the last layer of coil, the winding diameter of the last layer of coil, and the winding diameter of the second target layer of coil; determine the interlayer circumferential static friction of the second target layer of coil based on the second external tension of the second target layer of coil and the internal tension of the second target layer of coil.

[0311] In some embodiments, the fifth determination part is further configured to: determine a first ratio between the winding diameter of the last layer of coil and the winding diameter of the second target layer of coil; and determine a second external tension of the second target layer of coil based on the first ratio and the first external tension of the last layer of coil.

[0312] In some embodiments, the fifth determination portion is further configured to: determine the internal tension of the second target layer coil based on the circumferential stress of the second target layer coil; determine a first difference between the second external tension of the second target layer coil and the internal tension of the second target layer coil; and determine the interlayer circumferential static friction of the second target layer coil based on the first difference.

[0313] In some embodiments, the fifth determination portion is further configured to: determine the circumferential stress of the second target layer coil based on the circumferential stress within the coil of the second target layer coil; determine the product between the circumferential stress of the second target layer coil and the thickness of the coil; and determine the internal tension of the second target layer coil based on the product.

[0314] In some embodiments, the fifth determination part is further configured to: determine the in-roll circumferential stress of the second target layer coil based on the first external tension of the second target layer coil, the winding diameter of the second target layer coil, and the winding diameter of the last layer coil; determine the circumferential stress of the second target layer coil based on the second external tension of the second target layer coil and the in-roll circumferential stress of the second target layer coil.

[0315] In some embodiments, the fifth determining part is further configured to: determine a second difference between the maximum interlayer circumferential static friction of the second target layer coil and the interlayer circumferential static friction of the second target layer coil; and determine a first external tension of the second target layer coil based on the second difference.

[0316] In some embodiments, the apparatus includes a sixth determining portion configured to determine the maximum interlayer circumferential static friction force of the second target layer web based on the interlayer pressure of the second target layer web.

[0317] In some embodiments, the sixth determination part is further configured to: determine the interlayer pressure of the second target layer of coil based on the first external tension of the last layer of coil and the winding diameter of the second target layer of coil to the winding diameter of the last layer of coil; determine the maximum circumferential static friction between the layers of the second target layer of coil based on the static friction coefficient of the coil and the interlayer pressure of the second target layer of coil.

[0318] 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.

[0319] Based on the above embodiments, an embodiment of the present disclosure provides a tension determination device. FIG8 is a schematic diagram of the structure of a tension determination device provided by an embodiment of the present disclosure. As shown in FIG8 , the tension determination device 80 includes a third display portion 81, a second acquisition portion 82, and a fourth display portion 83, wherein:

[0320] The third display portion 81 is configured to display a second interface; wherein the second interface includes a coil configuration control and a third display area;

[0321] The second acquiring part 82 is configured to acquire first configuration information of the coil in response to a triggering operation on the coil configuration control;

[0322] The fourth display portion 83 is configured 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.

[0323] 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.

[0324] In the embodiments of the present disclosure and other embodiments, "part" can be part of a circuit, part of a processor, part of a program or software, etc., and of course it can also be a unit, a module, or a non-modular one.

[0325] 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 embodiment 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 for enabling 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.

[0326] 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.

[0327] The present disclosure provides a computer-readable storage medium having a computer program stored thereon, which implements the above method when executed by a processor. The computer-readable storage medium may be transient or non-transient.

[0328] 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, implements some or all of the steps in the above method. 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. In another optional embodiment, the computer program product is specifically embodied as a software product, such as a software development kit (SDK), etc.

[0329] It should be noted that FIG9 is a schematic diagram of the hardware entities of a computer device provided in an embodiment of the present disclosure. As shown in FIG9 , the hardware entities of the computer device 900 include: a controller 901, a communication interface 902, and a memory 903, wherein:

[0330] The controller 901 generally controls the overall operation of the computer device 900. In implementation, the controller 901 can be any suitable controller, for example, a PLC. The communication interface 902 can enable the computer device to communicate with other terminals or servers via a network. 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 each module in the controller 901 and 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 (RAM). Data transmission can be carried out between the controller 901, the communication interface 902, and the memory 903 via a 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 references to "one embodiment" or "an embodiment" throughout this specification mean that specific features, structures, or characteristics associated with the embodiment are included in at least one embodiment of the present disclosure. Therefore, the appearance of "in one embodiment" or "in an embodiment" throughout this specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. It should be understood that in the various embodiments of the present disclosure, the order of execution of the above-mentioned processes does not necessarily indicate a precedence in execution. The execution order of each process should be determined by its function and inherent logic and should not constitute any limitation on the implementation of the embodiments of the present disclosure. The above-mentioned numbers of the embodiments of the present disclosure are for descriptive purposes and do not represent the superiority or inferiority of the embodiments. It should be noted that, in this document, the terms "comprise," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. Without further limitation, the phrase "comprises an..." does not preclude the presence of additional identical elements in the process, method, article, or apparatus comprising such elements.

[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 schematic. For example, the division of the units is 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 separate, and the components shown as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment. In addition, the various functional units in the embodiments of the present disclosure may all 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-mentioned integrated units may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0335] Those skilled in the art will understand that all or part of the steps of the above-mentioned method embodiments 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, it executes the steps of the above-mentioned method embodiments; and the aforementioned storage medium includes: a mobile storage device, a read-only memory (ROM), a magnetic disk or an optical disk, and other media that can store program codes. 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 this understanding, the technical solution of the present disclosure, 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 several instructions for enabling 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: a mobile storage device, a ROM, a magnetic disk or an optical disk, and other media that can store program codes.

[0336] The above is 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 replacements within the technical scope disclosed in the present disclosure, and they should all be covered by the protection scope of the present disclosure. Industrial Applicability

[0337] The present disclosure provides a tension determination method and apparatus, computer equipment, storage medium, and computer program product. The tension determination method comprises: obtaining the winding diameter of the current layer of coiled material being wound on a reel; and determining 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 reel. The above scheme determines the external tension of the coiled material in real time based on the winding diameter. Compared to a constant tension mode, this scheme reduces the degree of interlayer slippage of the inner layer of coiled material, thereby reducing the possibility of barreling, thereby reducing coil waste and improving product reliability.

Claims

1. A method for determining tension, wherein: 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, wherein: 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 and the corresponding winding diameter of each layer of coil in the coil sequence, and the fitting information corresponding to the coil, wherein 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 coil in the coil sequence, and the coil sequence includes at least one layer of coil.

3. The method according to claim 2, wherein: 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 each layer of coil in the coil sequence 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 tension of each layer of coil in the coil sequence, 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 target layer of coil in the coil sequence is determined based on the first external tension of the last layer of coil in the coil sequence, and the first target layer of coil includes all layers of coil in the coil sequence except the last layer of coil; 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, wherein: The method further comprises: Based on the first external tension of the last layer of coil in the coil sequence, the first external tension of the first target layer of coil is determined; wherein the first target layer of coil includes all layers of coil in the coil sequence except the last layer of coil.

5. The method according to claim 4, wherein: The determining the first external tension of the first target layer of coils based on the first external tension of the last layer of coils in the coil sequence comprises: Based on the first external tension of the last layer of coiled material, determining the first external tension of the second target layer of coiled material; wherein the second target layer of coiled material is the previous layer of coiled material of the last layer of coiled material; For each third target layer of coil in the coil sequence, the first external tension of the third target layer of coil is determined based on the first external tension of the next layer of coil of the third target layer to the first external tension of the last layer of coil; wherein the third target layer of coil is a layer of coil in the coil sequence except the last layer of coil and the second target layer of coil.

6. The method according to claim 5, wherein: The determining the first external tension of the second target layer of coiled material based on the first external tension of the last layer of coiled material comprises: Determining the interlayer circumferential static friction force of the second target layer of coiled material based on the first external tension of the last layer of coiled material; Based on the interlayer circumferential static friction of the second target layer coil and the interlayer circumferential maximum static friction of the second target layer coil, a first external tension of the second target layer coil is determined.

7. The method according to claim 6, wherein: The determining of the interlayer circumferential static friction force of the second target layer of coiled material based on the first external tension of the last layer of coiled material comprises: Determining a second external tension of the second target layer of coil based on the first external tension of the last layer of coil, the winding diameter of the last layer of coil, and the winding diameter of the second target layer of coil; The interlayer circumferential static friction force of the second target layer coil is determined based on the second external tension of the second target layer coil and the internal tension of the second target layer coil.

8. The method according to claim 7, wherein: The determining the second external tension of the second target layer of coil based on the first external tension of the last layer of coil, the winding diameter of the last layer of coil, and the winding diameter of the second target layer of coil comprises: Determining a first ratio between the winding diameter of the last layer and the winding diameter of the second target layer of coil; The second external tension of the second target layer web is determined based on the first ratio and the first external tension of the last layer.

9. The method according to claim 7 or 8, wherein: The step of determining the interlayer circumferential static friction force of the second target layer coil based on the second external tension of the second target layer coil and the internal tension of the second target layer coil comprises: determining the internal tension of the second target layer coil based on the circumferential stress of the second target layer coil; determining a first difference between a second external tension of the second target layer coil and an internal tension of the second target layer coil; Based on the first difference, the interlayer circumferential static friction force of the second target layer web is determined.

10. The method according to claim 9, wherein: The determining the internal tension of the second target layer coil based on the circumferential stress of the second target layer coil comprises: Determining the circumferential stress of the second target layer coil based on the circumferential stress within the coil of the second target layer coil; determining the product of the hoop stress of the second target layer coil and the thickness of the coil; Based on the product, the internal tension of the second target layer web is determined.

11. The method according to claim 10, wherein: The determining the circumferential stress of the second target layer coil based on the circumferential stress in the coil of the second target layer coil comprises: Determining the in-roll circumferential stress of the second target layer coil based on the first external tension of the second target layer coil, the coiling diameter of the second target layer coil, and the coiling diameter of the last layer coil; The hoop stress of the second target layer coil is determined based on the second external tension of the second target layer coil and the hoop stress within the coil of the second target layer coil.

12. The method according to any one of claims 6 to 11, wherein: The determining of the first external tension of the second target layer coil based on the interlayer circumferential static friction of the second target layer coil and the interlayer circumferential maximum static friction of the second target layer coil comprises: Determining a second difference between the maximum circumferential static friction force between layers of the second target layer coil and the circumferential static friction force between layers of the second target layer coil; Based on the second difference, a first external tension of the second target layer web is determined.

13. The method according to any one of claims 6 to 12, wherein: The method further comprises: Based on the interlayer pressure of the second target layer coil, the maximum interlayer circumferential static friction force of the second target layer coil is determined.

14. The method according to claim 13, wherein: The step of determining the maximum circumferential static friction force between layers of the second target layer coil based on the interlayer pressure of the second target layer coil comprises: Determining the interlayer pressure of the second target layer of coil based on the first external tension of the last layer of coil and the winding diameter of the second target layer of coil to the winding diameter of the last layer of coil; Based on the static friction coefficient of the coil and the interlayer pressure of the second target layer coil, the maximum interlayer circumferential static friction of the second target layer coil is determined.

15. A method for determining tension, wherein: 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 fourth target layer of coiled material, the winding diameter of the fourth target layer of coiled material, the initial winding diameter, and the static friction coefficient of the coiled material.

16. The method according to claim 15, wherein: 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, wherein: 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 at least one layer of the at least one layer of coil.

18. A method for determining tension, wherein: 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, wherein: The device comprises: The first acquisition part is configured to acquire the winding diameter of the current layer of coiled material wound by the winding shaft; The determination part is configured to determine 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.

20. A tension determination device, wherein: The device comprises: A first display portion is configured to display a first interface; wherein the first interface includes a tension determination control and a first display area; The second display portion is configured to display the first external tension of at least one layer of the coil in the first display area in response to the triggering operation of the tension determination control; wherein each of the first external tensions is determined based on the second configuration information of the coil, and each of the first external tensions is The force is used to cooperate with the winding diameter of the current layer of coil to determine the external tension for winding the current layer of coil onto the winding shaft, and the second configuration information includes at least one of the following: the first external tension of the fourth target layer of coil, the winding diameter of the fourth target layer of coil, the initial winding diameter, and the static friction coefficient of the coil.

21. A tension determination device, wherein: The device comprises: The third display portion is configured to display a second interface; wherein the second interface includes a coil configuration control and a third display area; A second acquisition part is configured to acquire first configuration information of the coil in response to a triggering operation on the coil configuration control; The fourth display portion is configured 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 a winding shaft.

22. A computer device, wherein: 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, wherein: 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.

24. A computer program product, comprising a computer program or instructions, which, when the computer program or instructions are run on an electronic device, causes the electronic device to execute the method according to any one of claims 1 to 18.

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