Winding tension value determination method and apparatus, computer device, and storage medium

Abstract

The application relates to a winding tension value determination method and device, computer equipment, a storage medium and a computer program product, and relates to the technical field of winding batteries. The method comprises the following steps: obtaining a current thickness of a to-be-wound material and an initial winding tension value; the initial winding tension value represents a winding tension value when a winding diameter of the material is the smallest under a reference thickness; in the case that a change value of the current thickness relative to the reference thickness exceeds a change threshold value, the current winding diameter of the material is determined according to the current thickness, and the initial winding tension value is updated; and the current winding tension value of the material is determined according to the updated initial winding tension value and the current winding diameter. According to the method, the corresponding initial winding tension value can be updated and adjusted in real time according to the current thickness of the winding material, and then an accurate current winding tension value can be obtained. The inaccurate problem caused by the winding tension due to the too large change of the thickness of the material is avoided, and therefore the qualified rate of the winding product is improved.

Description

Technical Field

[0001] This application relates to the field of wound battery technology, and in particular to a method, apparatus, computer device, storage medium, and computer program product for determining winding tension value. Background Technology

[0002] Existing cylindrical cell tension control methods generally include constant tension control, constant torque control, segmented tension control based on upper and lower tension limits, linear tension control based on upper and lower tension limits, or tension control based on the reciprocal of the winding diameter based on upper and lower tension limits.

[0003] However, when the incoming material exceeds the tolerance requirements or the thickness varies significantly, the existing methods may result in substandard product quality due to inaccurate tension adjustment, leading to waste of raw materials. Summary of the Invention

[0004] Therefore, it is necessary to provide a method, apparatus, computer equipment, computer-readable storage medium, and computer program product for determining winding tension values ​​to address the technical problem of inaccurate winding tension values.

[0005] Firstly, this application provides a method for determining winding tension value. The method includes:

[0006] Obtain the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0007] If the change in the current thickness relative to the reference thickness exceeds a change threshold, the current roll diameter of the incoming material is determined and the initial winding tension value is updated based on the current thickness.

[0008] Based on the updated initial winding tension value and the current roll diameter, a current winding tension value is determined for the incoming material; the current winding tension value is used to control the current winding force of the incoming material.

[0009] In one embodiment, the process of updating the initial winding tension value includes:

[0010] Obtain the thickness difference between the current thickness and the reference thickness;

[0011] The initial winding tension value is updated based on the initial winding tension value, the reference thickness, and the thickness difference.

[0012] In one embodiment, updating the initial winding tension value based on the initial winding tension value, the reference thickness, and the thickness difference includes:

[0013] The ratio between the thickness difference and the reference thickness is obtained as the update rate for the initial winding tension value;

[0014] The initial winding tension value is updated according to the update rate to obtain the updated initial winding tension value.

[0015] In one embodiment, determining the current roll diameter of the incoming material based on the current thickness includes:

[0016] Obtain the current winding angle of the incoming material;

[0017] The current roll diameter of the incoming material is determined based on the current winding angle and the current thickness.

[0018] In one embodiment, determining the current roll diameter of the incoming material based on the current winding angle and the current thickness includes:

[0019] The product of the current winding angle and the current thickness is obtained as the change in roll diameter;

[0020] The diameter of the core is obtained, and the change in the core diameter is added to the current core diameter to obtain the current core diameter of the incoming material; the core is used to wind the incoming material.

[0021] In one embodiment, determining the current winding tension value for the incoming material based on the updated initial winding tension value and the current roll diameter includes:

[0022] Obtain the winding diameter range and winding tension coefficient of the incoming material;

[0023] The current winding tension value for the incoming material is determined based on the roll diameter range, the winding tension coefficient, the updated initial winding tension value, and the current roll diameter.

[0024] Secondly, this application also provides a device for determining winding tension value. The device includes:

[0025] The information acquisition module is used to acquire the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter of the incoming material is at its minimum under the reference thickness.

[0026] The information processing module is used to determine the current roll diameter of the incoming material and update the initial winding tension value based on the current thickness when the change value of the current thickness relative to the reference thickness exceeds the change threshold.

[0027] The tension determination module is used to determine the current winding tension value for the incoming material based on the updated initial winding tension value and the current winding diameter; the current winding tension value is used to control the current winding force of the incoming material.

[0028] Thirdly, this application also provides a computer device. The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to perform the following steps:

[0029] Obtain the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0030] If the change in the current thickness relative to the reference thickness exceeds a change threshold, the current roll diameter of the incoming material is determined and the initial winding tension value is updated based on the current thickness.

[0031] Based on the updated initial winding tension value and the current roll diameter, a current winding tension value is determined for the incoming material; the current winding tension value is used to control the current winding force of the incoming material.

[0032] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, performs the following steps:

[0033] Obtain the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0034] If the change in the current thickness relative to the reference thickness exceeds a change threshold, the current roll diameter of the incoming material is determined and the initial winding tension value is updated based on the current thickness.

[0035] Based on the updated initial winding tension value and the current roll diameter, a current winding tension value is determined for the incoming material; the current winding tension value is used to control the current winding force of the incoming material.

[0036] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, performs the following steps:

[0037] Obtain the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0038] If the change in the current thickness relative to the reference thickness exceeds a change threshold, the current roll diameter of the incoming material is determined and the initial winding tension value is updated based on the current thickness.

[0039] Based on the updated initial winding tension value and the current roll diameter, a current winding tension value is determined for the incoming material; the current winding tension value is used to control the current winding force of the incoming material.

[0040] The aforementioned method, apparatus, computer equipment, storage medium, and computer program for determining winding tension values ​​obtain the current thickness of the incoming material in real time. When the thickness of the incoming material changes excessively, the initial winding tension value is updated and adjusted in real time based on the current thickness of the incoming material, thereby obtaining an accurate current winding tension. This avoids the inaccuracy of winding tension caused by excessive changes in the thickness of the incoming material, thus improving the yield rate of wound products. Attached Figure Description

[0041] Figure 1 This is a diagram illustrating the application environment of the winding tension value determination method in one embodiment;

[0042] Figure 2 This is a flowchart illustrating a method for determining winding tension value in one embodiment;

[0043] Figure 3 This is a flowchart illustrating the initial winding tension update step in one embodiment;

[0044] Figure 4 This is a flowchart illustrating the steps for determining the current roll diameter in one embodiment;

[0045] Figure 5 This is a complete flowchart illustrating the method for determining the winding tension value in another embodiment;

[0046] Figure 6 This is a structural block diagram of a winding tension value determination device in one embodiment;

[0047] Figure 7 This is an internal structural diagram of a winding control device in one embodiment. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0049] The winding tension value determination method provided in this application embodiment can be applied to, for example, Figure 1In the application environment shown, the thickness measuring device 102 communicates with the winding control device 104 via a network. The winding control device 104 includes a data memory and a microprocessor. The winding control device 104 acquires the current thickness of the incoming material to be wound, as measured by the thickness measuring device 102, then updates the initial winding tension value retrieved from the data memory based on the current thickness, and finally obtains the current winding tension value based on the updated initial winding tension value to control the winding of the incoming material. The thickness measuring device 102 may include, but is not limited to, laser thickness measuring devices and ultrasonic thickness measuring devices. The winding control device 104 can be implemented using a programmable logic control system (PLC control system).

[0050] In one embodiment, such as Figure 2 As shown, a method for determining winding tension value is provided, which can be applied to... Figure 1 The following steps are used as an example to illustrate the winding control device 104:

[0051] Step 201: Obtain the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0052] The initial winding tension value is the winding tension value when the incoming material has the smallest roll diameter, that is, the winding tension value when the incoming material just starts winding. Furthermore, the minimum roll diameter is determined by the diameter of the core in the specific operation. For example, if the diameter of the core is 10 cm, then the roll diameter when the incoming material just starts winding is 10 cm, which is the minimum roll diameter.

[0053] It should be noted that the winding tension value is the force applied to the incoming material. The magnitude of the winding tension value affects the tightness of the winding of the incoming material. The greater the winding tension, the tighter the winding, and vice versa.

[0054] The reference thickness is the theoretical thickness of the incoming material without any tolerance.

[0055] For example, the winding control device 104 obtains the current thickness information of the material to be wound from the thickness measuring device 102; and retrieves the user-preset initial winding tension value from the data storage.

[0056] Step 202: If the change in current thickness relative to reference thickness exceeds the change threshold, determine the current roll diameter of the incoming material and update the initial winding tension value based on the current thickness.

[0057] The current roll diameter refers to the roll diameter of the incoming material that has already been wound, including the diameter of the core.

[0058] For example, the winding control device 104 calculates the thickness difference between the current thickness of the material and the reference thickness, and determines whether the thickness difference exceeds a user-preset change threshold. When the thickness difference exceeds the change threshold, the winding control device 104 updates the initial winding tension based on the current thickness, and simultaneously calculates the current roll diameter of the material.

[0059] Step 203: Determine the current winding tension value for the incoming material based on the updated initial winding tension value and the current winding diameter; the current winding tension value is used to control the current winding force of the incoming material.

[0060] Among them, the winding tension can be the tapered winding tension, that is, the winding tension value should decrease as the winding diameter increases, and the initial winding tension value is the maximum winding tension value in one actual operation.

[0061] For example, the winding control device 104 calculates the current winding tension value of the incoming material at the current winding diameter based on the updated initial winding tension and the current winding diameter, and on the basis of the law of tapered winding tension, so as to control the winding operation of the incoming material.

[0062] In the above method for determining the winding tension value, the current thickness of the incoming material is obtained through real-time detection. When the thickness of the incoming material changes too much, the initial winding tension value is updated and adjusted in real time according to the current thickness of the incoming material, thereby obtaining an accurate current winding tension. This avoids the problem of inaccurate winding tension caused by excessive changes in the thickness of the incoming material, thus improving the pass rate of the wound products.

[0063] In one embodiment, such as Figure 3 As shown, the process of updating the initial winding tension value in step 202 above can also be achieved through the following steps:

[0064] Step 301: Obtain the thickness difference between the current thickness and the reference thickness;

[0065] Step 302: Update the initial winding tension value based on the initial winding tension value, the reference thickness, and the thickness difference.

[0066] The thickness difference is specifically obtained by subtracting the reference thickness from the current thickness, and can be a positive or negative number.

[0067] In the same embodiment, step 302 above, which updates the initial winding tension value based on the initial winding tension value, the reference thickness, and the thickness difference, can also be achieved through the following steps:

[0068] Step 1: Obtain the ratio between the thickness difference and the reference thickness, as the update rate for the initial winding tension value;

[0069] Step 2: Update the initial winding tension value according to the update rate to obtain the updated initial winding tension value.

[0070] The update rate can be positive or negative, depending on the sign of the thickness difference. That is, when the thickness difference is positive, the update rate is the rate of increase of the initial winding tension; when the thickness difference is negative, the update rate is the rate of decrease of the initial winding tension.

[0071] For example, the initial winding tension is updated using the formula T0'=(1+Δh / h)*T0, where T0 is the initial winding tension before the update, T0' is the initial winding tension after the update, Δh is the thickness difference, and h is the reference thickness.

[0072] In this embodiment, the initial winding tension update rate is determined by the determined thickness difference, thereby realizing the dynamic adjustment of the initial winding tension based on the current thickness of the incoming material. This can avoid the problem of unqualified products due to excessive changes in the thickness of the incoming material, and improve the qualification rate of the wound products.

[0073] In one embodiment, such as Figure 4 As shown, step 202 above, which determines the current roll diameter of the incoming material based on the current thickness, can also be achieved through the following steps:

[0074] Step 401: Obtain the current winding angle of the incoming material;

[0075] Step 402: Determine the current roll diameter of the incoming material based on the current winding angle and current thickness.

[0076] The current winding angle is determined by the number of turns of the incoming material already wound on the core, which is also the angle by which the core has rotated.

[0077] For example, the current winding angle can be determined by the core controller detecting the angle through which the core has rotated.

[0078] In the same real-time example, step 402 above, which determines the current roll diameter of the incoming material based on the current winding angle and current thickness, can also be achieved through the following steps:

[0079] Step 1: Obtain the product between the current winding angle and the current thickness as the change in winding diameter;

[0080] Step 2: Obtain the diameter of the core, add the change in core diameter to the change in core diameter to obtain the current core diameter of the incoming material.

[0081] For example, through formula r i =r0 + h*θ is used to calculate the current volume diameter, where r iLet r be the current roll diameter, r0 be the core diameter, h be the current thickness, and θ be the current winding angle. It should be noted that the above formula is based on the publicly available laws governing the Archimedean spiral.

[0082] In this embodiment, the current winding diameter is calculated in real time based on the winding diameter calculation method determined by the Archimedes spiral, and then the corresponding current winding tension value can be determined based on the current winding diameter.

[0083] In one embodiment, step 203 above, which determines the current winding tension value for the incoming material based on the updated initial winding tension value and the current winding diameter, can also be achieved through the following steps:

[0084] Step 1: Obtain the range of the incoming material's winding diameter and the winding tension coefficient;

[0085] Step 2: Determine the current winding tension value for the incoming material based on the roll diameter range, winding tension coefficient, updated initial winding tension value, and current roll diameter.

[0086] The roll diameter range consists of the maximum roll diameter and the minimum roll diameter.

[0087] Furthermore, the maximum roll diameter is the target roll diameter that the product needs to be wound in actual operation; the minimum roll diameter is the diameter of the core.

[0088] The winding tension coefficient can be preset by the user, and is generally set to 0.6 to 0.8.

[0089] For example, the user-preset target roll diameter and core diameter are obtained, respectively serving as the maximum and minimum roll diameters, forming the roll diameter range for incoming material winding, and the user-preset winding tension coefficient is also obtained. Then, the formula T is used... i =T0'*[1-k*(A / B)], A=r i -r min B = r max -r min The current winding tension value is calculated, where T i T0' is the current winding tension value, T0' is the updated initial winding tension value, k is the winding tension coefficient, and r is the winding tension coefficient. i r is the current volume diameter min For the minimum roll diameter, r max This is the maximum roll diameter.

[0090] In this embodiment, the current winding tension value is calculated based on the initial winding tension value updated based on the current thickness and the current winding diameter, thereby accurately obtaining the current winding tension value corresponding to the current winding diameter, improving the pass rate of the products wound from the incoming material, and reducing the waste of incoming material.

[0091] In another embodiment, such as Figure 5 As shown, a method for determining winding tension value is provided, including the following steps:

[0092] Step 501: Obtain the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0093] Step 502: If the change in the current thickness relative to the reference thickness exceeds the change threshold, obtain the thickness difference between the current thickness and the reference thickness.

[0094] Step 503: Obtain the ratio between the thickness difference and the reference thickness as the update rate for the initial winding tension value;

[0095] Step 504: Update the initial winding tension value according to the update rate to obtain the updated initial winding tension value.

[0096] Step 505: Obtain the current winding angle of the incoming material;

[0097] Step 506: Obtain the product between the current winding angle and the current thickness as the change in winding diameter;

[0098] Step 507: Obtain the diameter of the core, add the change in roll diameter to the diameter of the core to obtain the current roll diameter of the incoming material; the core is used to wind the incoming material.

[0099] Step 508: Obtain the winding diameter range and winding tension coefficient of the incoming material;

[0100] Step 509: Determine the current winding tension value for the incoming material based on the roll diameter range, winding tension coefficient, updated initial winding tension value, and current roll diameter.

[0101] For example, the above method can be applied to the battery winding process. The winding control device executing the method can be a programmable logic control system (PLC control system). The winding control device obtains the current thickness of the incoming electrode material from a thickness measuring device via a controller area network (CANopen). The thickness measuring device has a repeatability of ±0.3μm and is positioned after the unwinding roller and before laser cutting. The winding control device also obtains the user-preset initial winding tension value for the current incoming electrode material. When the change in the current thickness of the incoming material relative to the reference thickness exceeds a change threshold (the change threshold is preset to 5μm), the ratio between the thickness difference and the reference thickness is obtained as the update rate of the initial winding tension value, and the update processing of the initial winding tension value is completed. The winding control system can obtain the current winding angle of the incoming electrode material through a core control device, or obtain the length of the incoming electrode material that has been wound through an encoder length measuring roller, and indirectly calculate the current winding angle. The product of the current winding angle and the current thickness is obtained as the change in winding diameter. The diameter of the core is obtained through the core control device. The change in winding diameter is added to the diameter of the core to obtain the current winding diameter of the incoming material. The core diameter is used as the minimum winding diameter for winding the electrode material, and the target winding diameter for winding the battery is used as the maximum winding diameter for winding the electrode material. Together, they form the winding diameter range for the electrode material. The user-preset winding tension coefficient for the electrode material is also obtained. Finally, based on the winding diameter range, the winding tension coefficient, the updated initial winding tension value, and the current winding diameter, the current winding tension value for the current winding diameter of the electrode material is determined to achieve winding tension control of the electrode material.

[0102] In this embodiment, the current thickness of the incoming material is detected in real time from the source. When the thickness of the incoming material changes significantly, the initial winding tension value is updated and adjusted in real time based on the current thickness, thereby obtaining an accurate current winding tension. This solves problems such as electrode alignment exceeding tolerance requirements due to large variations in the thickness of the incoming electrode material, reduces waste of intermediate cell material and winding time caused by manual measurement and correction after winding, and improves product yield and equipment efficiency.

[0103] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0104] Based on the same inventive concept, this application also provides a winding tension value determining device for implementing the winding tension value determining method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations in one or more embodiments of the winding tension value determining device provided below can be found in the limitations of the winding tension value determining method described above, and will not be repeated here.

[0105] In one embodiment, such as Figure 6 As shown, a winding tension value determination device is provided, comprising: an information acquisition module 601, an information processing module 602, and a tension determination module 603, wherein:

[0106] The information acquisition module 601 is used to acquire the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0107] The information processing module 602 determines the current roll diameter of the incoming material and updates the initial winding tension value based on the current thickness when the change in the current thickness relative to the reference thickness exceeds a change threshold.

[0108] The tension determination module 603 is used to determine the current winding tension value for the incoming material based on the updated initial winding tension value and the current winding diameter; the current winding tension value is used to control the current winding force of the incoming material.

[0109] In one embodiment, the information processing module 602 is further configured to obtain the thickness difference between the current thickness and the reference thickness; and update the initial winding tension value based on the initial winding tension value, the reference thickness, and the thickness difference.

[0110] In one embodiment, the information processing module 602 is further configured to obtain the ratio between the thickness difference and the reference thickness as the update rate of the initial winding tension value; and update the initial winding tension value according to the update rate to obtain the updated initial winding tension value.

[0111] In one embodiment, the information processing module 602 is further configured to obtain the current winding angle of the incoming material and determine the current roll diameter of the incoming material based on the current winding angle and the current thickness.

[0112] In one embodiment, the information processing module 602 is further configured to: obtain the product between the current winding angle and the current thickness as the change in winding diameter; obtain the diameter of the core; add the change in winding diameter to the diameter of the core to obtain the current winding diameter of the incoming material; and use the core to wind the incoming material.

[0113] In one embodiment, the tension determination module 603 is further configured to: obtain the winding diameter range and winding tension coefficient of the incoming material; and determine the current winding tension value for the incoming material based on the winding diameter range, winding tension coefficient, updated initial winding tension value, and current winding diameter.

[0114] Each module in the aforementioned winding tension value determining device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in the processor of a computer device in hardware form or independent of it, or stored in the memory of a computer device in software form, so that the processor can call and execute the operations corresponding to each module.

[0115] In one embodiment, a winding control device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 7 As shown, the device includes a processor, memory, input / output interfaces, and a communication interface. The processor, memory, and input / output interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the input / output interfaces. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores the operating system and computer programs. The internal memory provides the environment for the operation of the operating system and computer programs stored in the non-volatile storage medium. The input / output interfaces are used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When executed by the processor, the computer program implements a method for determining winding tension values.

[0116] Those skilled in the art will understand that Figure 7The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the winding control device to which the present application is applied. The specific winding control device may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0117] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0118] Obtain the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0119] If the change in current thickness relative to reference thickness exceeds the change threshold, determine the current roll diameter of the incoming material and update the initial winding tension value based on the current thickness.

[0120] Based on the updated initial winding tension value and the current roll diameter, determine the current winding tension value for the incoming material; the current winding tension value is used to control the current winding force of the incoming material.

[0121] In one embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0122] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0123] Obtain the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0124] If the change in current thickness relative to reference thickness exceeds the change threshold, determine the current roll diameter of the incoming material and update the initial winding tension value based on the current thickness.

[0125] Based on the updated initial winding tension value and the current roll diameter, determine the current winding tension value for the incoming material; the current winding tension value is used to control the current winding force of the incoming material.

[0126] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0127] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0128] Obtain the current thickness and initial winding tension value of the incoming material to be wound; the initial winding tension value represents the winding tension value when the roll diameter is at its minimum under the reference thickness.

[0129] If the change in current thickness relative to reference thickness exceeds the change threshold, determine the current roll diameter of the incoming material and update the initial winding tension value based on the current thickness.

[0130] Based on the updated initial winding tension value and the current roll diameter, determine the current winding tension value for the incoming material; the current winding tension value is used to control the current winding force of the incoming material.

[0131] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0132] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data shall comply with the relevant laws, regulations and standards of the relevant countries and regions.

[0133] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.

[0134] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0135] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A winding tension value determination method characterized by, The method comprises: acquiring a current thickness of a material to be wound and an initial winding tension value; the material to be wound comprises an electrode material; the initial winding tension value represents a winding tension value of the material at a minimum winding diameter under a reference thickness; the winding tension is a taper winding tension, the winding tension value decreases with the increase of the winding diameter, and the initial winding tension value is a maximum winding tension value in a first actual operation; in a case where a change value of the current thickness relative to the reference thickness exceeds a change threshold value, determining a current winding diameter of the material according to the current thickness, and updating the initial winding tension value; the current winding diameter is a winding diameter of the material that has been wound, and includes a diameter of a winding core; determining a current winding tension value for the material according to the updated initial winding tension value and the current winding diameter; the current winding tension value is used to control a current winding intensity of the material.

2. The method of claim 1, wherein, The updating process of the initial winding tension value comprises: acquiring a thickness difference between the current thickness and the reference thickness; updating the initial winding tension value according to the initial winding tension value, the reference thickness and the thickness difference.

3. The method of claim 2, wherein, The updating of the initial winding tension value according to the initial winding tension value, the reference thickness and the thickness difference comprises: acquiring a ratio between the thickness difference and the reference thickness as an updating rate of the initial winding tension value; updating the initial winding tension value according to the updating rate to obtain an updated initial winding tension value.

4. The method of claim 1, wherein, The determination of the current winding diameter of the material according to the current thickness comprises: acquiring a current winding angle of the material to be wound; determining the current winding diameter of the material according to the current winding angle and the current thickness.

5. The method of claim 4, wherein, The determination of the current winding diameter of the material according to the current winding angle and the current thickness comprises: acquiring a product between the current winding angle and the current thickness as a winding diameter change amount; acquiring a diameter of the winding core, adding the winding diameter change amount and the diameter of the winding core to obtain the current winding diameter of the material; the winding core is used to wind the material.

6. The method of claim 1, wherein, The determination of the current winding tension value for the material according to the updated initial winding tension value and the current winding diameter comprises: acquiring a winding diameter range and a winding tension coefficient of the material to be wound; determining the current winding tension value for the material according to the winding diameter range, the winding tension coefficient, the updated initial winding tension value and the current winding diameter.

7. A winding tension value determination device characterized by comprising: The device comprises: an information acquisition module, configured to acquire a current thickness of a material to be wound and an initial winding tension value; the material to be wound comprises an electrode material; the initial winding tension value represents a winding tension value of the material at a minimum winding diameter under a reference thickness; the winding tension is a taper winding tension, the winding tension value decreases with the increase of the winding diameter, and the initial winding tension value is a maximum winding tension value in a first actual operation; The information processing module is configured to determine a current winding diameter of the material to be wound according to the current thickness when a change value of the current thickness relative to a reference thickness exceeds a change threshold, and update the initial winding tension value according to the current thickness; the current winding diameter is a winding diameter of the material to be wound, and includes a diameter of a winding core. The tension determination module is configured to determine a current winding tension value for the material to be wound according to the updated initial winding tension value and the current winding diameter; the current winding tension value is used to control a current winding force of the material to be wound.

8. A computer device comprising a memory and a processor, the memory storing a computer program, characterized in that, The processor executes the computer program to implement the steps of the method in any one of claims 1 to 6.

9. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method in any one of claims 1 to 6.

10. A computer program product comprising a computer program, characterized in that, The computer program is executed by the processor to implement the steps of the method in any one of claims 1 to 6.

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