Tension adjusting device and method for battery material

Abstract

Disclosed in embodiments of the present disclosure is a tension adjusting device for a battery material. The device comprises a linear guide rail floating apparatus, a winding shaft, and a limiting apparatus. The battery material passes through the limiting apparatus, and runs around the linear guide rail floating apparatus to be connected to the winding shaft, so that the battery material is wound by controlling the winding shaft. The linear guide rail floating apparatus is used for moving in the horizontal direction, so as to adjust the tension of the battery material in the winding process. Further disclosed in the embodiments of the present disclosure is a tension adjusting method.

Description

Battery material tension adjustment device and method

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on a Chinese patent application with application number 202311025717.7, application date August 15, 2023, and invention name “A tension adjustment device and method for battery materials”, 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 the technical field of battery manufacturing, and in particular to a tension adjustment device and method for battery materials. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.

[0005] During the reeling process, the tension of the lithium battery material affects the performance of the cell and battery. Existing techniques typically use a swing arm mechanism to adjust the tension, but this mechanism has a limited swing range, a narrow adjustable tension range, and poses safety risks due to uncontrolled swing arm movement.

[0006] Summary of the Invention

[0007] In order to solve the above technical problems, the embodiments of the present disclosure hope to provide a tension adjustment device and method for battery materials, which solves the problems of small adjustable tension range and safety risks caused by uncontrolled swing arm movements in the prior art.

[0008] The technical solution of the present disclosure is achieved as follows:

[0009] A tension adjustment device for battery material, comprising: a linear guide floating device, a winding shaft and a limiting device; the battery material passes through the limiting device, passes around the linear guide floating device, and is connected to the winding shaft, so that the battery material can be wound by controlling the winding shaft; the linear guide floating device is used to move in the horizontal direction to adjust the tension of the battery material during the winding process.

[0010] It can be understood that the linear guide floating device has a larger range of movement and a larger tension adjustment range; moreover, the linear guide floating mechanism moves in the horizontal direction, there is no uncontrolled movement, and the safety is higher.

[0011] In the above solution, the linear guide floating device includes: a servo device and a floating roller connected to the servo device; the servo device is used to drive the floating roller to move in the horizontal direction to adjust the tension of the battery material during the winding process.

[0012] It can be understood that the control accuracy of the servo device is relatively high, so by driving the dancing roller through the servo device, the adjustment accuracy of the tension can be improved.

[0013] In the above scheme, the device also includes: a controller; the controller is used to control the movement of the servo device based on the current tension value and tension mode of the battery material to drive the floating roller to move in the horizontal direction; the tension mode indicates whether the tension of the battery material during the winding process is constant or variable.

[0014] It can be understood that the linear guide floating device includes a servo device and a floating roller. The servo device is controlled by the controller to drive the floating roller to move in the horizontal direction. That is, the linear guide floating device is controlled by the controller. In this way, the linear guide floating device can be easily and quickly controlled by the controller to achieve precise adjustment of the tension.

[0015] In the above solution, the servo device includes a telescopic member and a servo motor; the telescopic member is connected between the servo motor and the dancing roller.

[0016] It can be understood that the telescopic member has high anti-interference ability and wear resistance, and is simple and convenient to install. In this way, the servo motor adjusts the position of the dancing roller through the telescopic member, which can eliminate the interference of external forces and make the tension adjustment more accurate.

[0017] In the above scheme, the device also includes: a controller; the controller is used to control the linear guide floating device to move in the horizontal direction so that the tension of the battery material during the winding process satisfies the corresponding tension mode; the tension mode indicates whether the tension of the battery material during the winding process is constant or variable.

[0018] It can be understood that the tension of the battery material during the winding process can be controlled in a corresponding tension mode through the controller, so that the tension of the battery material during the winding process can be constant or variable, meeting various tension requirements of the battery material.

[0019] In the above solution, the controller is further used to control the linear guide rail floating device to move in the horizontal direction when the tension mode of the battery material is constant tension, so that the tension value of the battery material is constant at the tension setting value for the constant tension.

[0020] It can be understood that the controller can control the movement of the linear guide floating device to keep the tension value of the battery material constant at a fixed tension value, thereby meeting the constant tension requirement of the battery material.

[0021] In the above solution, the controller is also used to control the linear guide floating device to move in the horizontal direction when the tension mode of the battery material is variable tension, so that the tension value of the battery material meets the tension setting value corresponding to different winding diameters.

[0022] It can be understood that the controller can control the movement of the linear guide floating device to change the tension value of the battery material according to the size of the coil diameter, thereby meeting the variable tension requirements of the battery material.

[0023] In the above scheme, the device also includes: a tension sensor; the tension sensor is used to detect the tension value of the battery material; the controller is specifically used to control the linear guide floating device to move in the horizontal direction based on the tension value of the battery material detected by the tension sensor, so as to adjust the tension of the battery material during the winding process.

[0024] It can be understood that the tension sensor can detect the tension value of the battery material during the winding process in real time, and adjust the tension of the battery material in a timely manner.

[0025] In the above solution, the device further includes: a displacement sensor; the displacement sensor is used to detect the position of the floating roller; and the controller is specifically used to control the winding speed of the winding shaft based on the position of the floating roller detected by the displacement sensor.

[0026] It can be understood that the position of the floating stick can be detected in real time by the displacement sensor.

[0027] In the above solution, the limiting device includes a traction shaft and a pressure roller shaft.

[0028] A method for adjusting the tension of a battery material is applied to a tension adjustment device for the battery material, the device including a linear guide floating device and a winding shaft. The method includes: determining a current tension mode of the battery material; the tension mode characterizes whether the tension of the battery material during the winding process is constant or variable; based on the current tension mode and the current tension value of the battery material, controlling the linear guide floating device to move in a horizontal direction to adjust the tension of the battery material passing through the winding shaft during the winding process.

[0029] It can be understood that the linear guide floating device has a large range of movement, so the linear guide floating device can expand the tension adjustment range, improve the tension adjustment accuracy, and meet the various tension requirements of battery materials; and the linear guide floating mechanism moves in the horizontal direction, there is no uncontrolled movement, and the safety is high.

[0030] In the above scheme, the linear guide floating device includes the servo device and a floating roller connected to the servo device; based on the current tension mode and the current tension value of the battery material, the linear guide floating device is controlled to move in the horizontal direction to adjust the tension of the battery material passing through the winding shaft during the winding process, including: determining the current tension value of the battery material through the tension sensor in the tension adjustment device of the battery material; determining the target tension setting value based on the current tension mode; based on the target tension setting value and the current tension value, controlling the servo device to move to drive the floating roller to move in the horizontal direction, and adjusting the tension of the battery material passing through the winding shaft during the winding process to the target tension setting value.

[0031] It can be understood that the control accuracy of the servo device is relatively high, so by driving the dancing roller through the servo device, the adjustment accuracy of the tension can be improved.

[0032] In the above solution, determining the target tension setting value based on the current tension mode includes: when the current tension mode is constant tension, determining a first tension setting value for the constant tension; and using the first tension setting value as the target tension setting value.

[0033] It can be understood that by controlling the movement of the linear guide floating device, the tension value of the battery material can be kept constant at a fixed tension value, thereby meeting the constant tension requirement of the battery material.

[0034] In the above scheme, the target tension setting value is determined based on the current tension mode, including: when the current tension mode is variable tension, determining the current winding diameter of the winding shaft in the tension adjustment device of the battery material; based on the corresponding relationship between the winding diameter size and the tension value, determining the second tension setting value corresponding to the current winding diameter; and using the second tension setting value as the target tension setting value.

[0035] It can be understood that by controlling the movement of the linear guide floating device, the tension value of the battery material can be changed according to the coil diameter, thereby meeting the variable tension requirements of the battery material.

[0036] In the above scheme, based on the target tension setting value and the current tension value, the servo device is controlled to move to drive the floating roller to move in the horizontal direction, and the tension of the battery material passing through the winding shaft during the winding process is adjusted to the target tension setting value, including: based on the target tension setting value and the current tension value, the servo device is controlled to move to drive the floating roller to move in the horizontal direction; determining the target position of the floating roller after movement; based on the target position, the winding speed of the winding shaft is adjusted to the target tension setting value.

[0037] It can be understood that not only can the floating roller (linear guide floating device) be driven to move by controlling the servo device, but the winding speed of the winding shaft can also be adjusted by the position of the floating roller after movement, thereby further improving the tension adjustment accuracy.

[0038] In the above solution, adjusting the winding speed of the winding shaft based on the target position includes: determining a reference position when the floating roller is in the middle position; and adjusting the winding speed of the winding shaft based on the target position and the reference position.

[0039] It can be understood that the position of the dancing roller when it is in the middle position can be used as a reference to adjust the winding speed of the winding shaft to achieve precise adjustment of the tension.

[0040] In the above solution, before determining the current tension mode of the battery material, the method further includes: determining that the battery material has tension when it is determined that the tension adjustment device of the battery material has not issued an alarm signal and a ready signal sent by the tension adjustment device of the battery material is received;

[0041] Correspondingly, determining the current tension mode of the battery material includes: determining the current tension mode when it is determined that the battery material already has tension.

[0042] It can be understood that using the alarm status and readiness status of the tension adjustment device of the battery material as the judgment conditions for whether the battery material has been enabled can ensure the effectiveness of the tension adjustment.

[0043] In the above scheme, before determining the second tension setting value corresponding to the current roll diameter based on the correspondence between the roll diameter size and the tension value, the method also includes: setting the tension setting values ​​corresponding to different roll diameter sizes according to the roll diameter change of the reel during the reeling process to obtain the correspondence.

[0044] It can be understood that by setting the tension setting value corresponding to different roll diameters according to the change in roll diameter of the reel during the reeling process, the "bamboo shoot" phenomenon generated when the roll diameter of the battery material increases can be reduced.

[0045] In the above scheme, the tension setting values ​​corresponding to different winding diameters are set according to the change of the winding diameter of the winding shaft during the winding process to obtain the corresponding relationship, including: determining multiple winding diameter intervals according to the change of the winding diameter of the winding shaft during the winding process; setting the tension setting value corresponding to each winding diameter interval; and storing the multiple winding diameter intervals and the tension setting value corresponding to each winding diameter interval in correspondence to obtain the corresponding relationship.

[0046] It can be understood that by setting the tension setting values ​​corresponding to different winding diameter intervals, the tension of the battery material during the winding process can be adjusted by varying the tension in the intervals.

[0047] In the above scheme, based on the target tension setting value and the current tension value, the servo device is controlled to move, so as to drive the floating roller to move in the horizontal direction, and the tension of the battery material passing through the winding shaft during the winding process is adjusted to the target tension setting value, including: performing proportional differential integral PID operation on the target tension setting value and the current tension value to obtain the calculated value; adjusting the proportional valve output based on the calculated value, and controlling the servo device to move, so as to drive the floating roller to move in the horizontal direction, and the tension of the battery material passing through the winding shaft during the winding process is adjusted to the target tension setting value.

[0048] It can be understood that by performing PID calculation on the target tension setting value and the current tension value, the tension value can be converted into a proportional valve output value to adjust the proportional valve output, thereby controlling the movement of the servo device, driving the floating roller to move in the horizontal direction, and achieving the purpose of adjusting the tension of the battery material during the winding process.

[0049] The battery material tension adjustment device and method provided by the disclosed embodiments include: a linear guide float device, a reel, and a limit device; the battery material passes through the limit device, winds around the linear guide float device, and connects to the reel, so that the reel can be controlled to achieve reeling of the battery material; the linear guide float device is used to move horizontally to adjust the tension of the battery material during the reeling process. As such, since the linear guide float device has a large range of movement, the tension adjustment range is large; and since the linear guide float mechanism moves horizontally, there is no uncontrolled movement, resulting in high safety. This overcomes the problems of the prior art, such as the small adjustable tension range and the safety risks caused by the uncontrolled movement of the swing arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] FIG1 is a schematic structural diagram of a tension adjustment device based on a swing arm mechanism;

[0051] FIG2 is a schematic structural diagram of a battery material tension adjustment device provided in an embodiment of the present disclosure;

[0052] FIG3 is a schematic flow chart of a method for adjusting tension of a battery material according to an embodiment of the present disclosure;

[0053] FIG4 is a schematic structural diagram of a telescopic rod provided in an embodiment of the present disclosure;

[0054] FIG5 is a flow chart of a method for adjusting tension of a battery material provided in an embodiment of the present disclosure.

[0055] The reference numerals included in the detailed description are as follows:

[0056] Figure 1: Traction shaft 101, pressure roller 102, tension sensor 103, dancer roller 104, take-up shaft 105, potentiometer 106, rocker cylinder 107, rocker low limit 108, rocker high limit 109, rocker 110;

[0057] Figure 2: Linear guide floating device 201, servo device 2011, floating roller 2012, telescopic member 2013, servo motor 2014, limit device 202, traction shaft 2021, pressure roller 2022, reeling shaft 203, tension sensor 204. DETAILED DESCRIPTION

[0058] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below with reference to the accompanying drawings in the embodiments of the present disclosure.

[0059] It should be understood that the “embodiments of the present disclosure” or “the aforementioned embodiments” mentioned throughout the specification mean that the specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present disclosure. Therefore, “in the embodiments of the present disclosure” or “in the aforementioned embodiments” appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the various embodiments of the present disclosure, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present disclosure. The serial numbers of the above-mentioned embodiments of the present disclosure are for description only and do not represent the advantages and disadvantages of the embodiments.

[0060] Unless otherwise specified, when an electronic device performs any step in the embodiments of the present disclosure, the processor of the electronic device may perform the step. It is also worth noting that the embodiments of the present disclosure do not limit the order in which the electronic device performs the following steps. In addition, the methods used to process data in different embodiments may be the same method or different methods. It should also be noted that any step in the embodiments of the present disclosure can be independently executed by the electronic device, that is, when the electronic device performs any step in the following embodiments, it can be independent of the execution of other steps.

[0061] It should be understood that the specific embodiments described herein are only used to illustrate the present disclosure and are not intended to limit the present disclosure.

[0062] In order to better understand the tension adjustment device for battery materials provided by the embodiments of the present disclosure, the scheme of the tension adjustment device based on the swing arm mechanism in the prior art is first described below.

[0063] As shown in Figure 1, the tension adjustment device based on the swing arm mechanism includes: a traction shaft 101, a pressure roller 102, a tension sensor 103, a floating roller 104, a winding shaft 105, a potentiometer 106, a rocker cylinder 107, a rocker low limit 108, a rocker high limit 109, and a rocker 110.

[0064] The swing arm 110, swing arm cylinder 107, and dancer roller 104 form a swing arm mechanism that adjusts the tension of the battery material during the winding process by swinging left and right. The area between the swing arm low limit 108 and the swing arm high limit 109 in Figure 1 is the area where the swing arm can move.

[0065] The arrowed lines in Figure 1 represent battery material. After passing through the limiting mechanism formed by the traction shaft 101 and the pressure roller 102, the battery material passes through the tension sensor 103 and the dancing roller 104, and is connected to the reeling shaft 105. The reeling shaft 105 is controlled to achieve reeling of the battery material. Specifically, the tension sensor 103 detects the tension of the battery material. When the tension is high, the rocker cylinder 107 controls the movement of the rocker 110, which in turn moves the dancing roller 104 to adjust the tension of the battery material. The position of the dancing roller 104 can also be detected by the potentiometer 106 to prevent safety issues caused by abnormal movement of the dancing roller 104.

[0066] As clearly shown in Figure 1, the narrow range of movement of the swing arm limits the range of tension adjustment that can be made using it, resulting in a small adjustable tension range and low tension adjustment precision. In other words, the high and low limit settings restrict the tension adjustment range. Furthermore, although the swing arm's range of movement is limited by setting the swing arm's low limit 108 and high limit 109 to ensure equipment safety, if a belt breaks, the tension sensor registers zero tension. At this point, the proportional valve output of the dancer roller 104 is at its maximum opening, and the swing arm automatically and rapidly swings to the low limit. This is an uncontrolled action, posing a safety risk of the swing arm exceeding the low limit due to excessive speed, potentially impacting other components. Furthermore, the potentiometer's narrow detection range results in low precision in detecting the swing arm's movement, which in turn leads to inaccurate tension adjustment.

[0067] To this end, an embodiment of the present disclosure provides a tension adjustment device for battery material, referring to Figure 2, the tension adjustment device for battery material may include: a linear guide floating device 201, a winding shaft 203 and a limiting device 202; the battery material (the line with an arrow in Figure 2) passes through the limiting device 202, passes around the linear guide floating device 201, and is connected to the winding shaft 203, so as to realize the winding of the battery material by controlling the winding shaft 203; the linear guide floating device 201 is used to move in the horizontal direction to adjust the tension of the battery material during the winding process.

[0068] The battery material may be aluminum foil, copper foil, or other materials. The limiting device 202 is used to secure the battery material and can also be used to adjust its thickness. In one feasible implementation, the limiting device 202 may include a traction shaft 2021 and a pressure roller 2022. The linear guide float 201 may be an important component for adjusting the tension of the battery material. Specifically, the linear guide float 201 adjusts the force applied to the battery material by moving horizontally to achieve tension adjustment. The reel 203 is the shaft for winding the battery material and is typically made of metal or plastic.

[0069] During the winding process, the tension of the battery material can be adjusted by controlling the horizontal left and right movement of the linear guide floating device 201; specifically, if the current tension value of the battery material is large, the linear guide floating device 201 can be controlled to move to the right in the horizontal direction to reduce the tension of the battery material; if the current tension value of the battery material is small, the linear guide floating device 201 can be controlled to move to the left in the horizontal direction to increase the tension of the battery material.

[0070] As can be understood, the linear guide float 201 moves horizontally, without affecting other components in the equipment and preventing uncontrolled movement, thus providing increased safety. Furthermore, the linear guide float 201 has a wide range of motion, allowing for a wide range of tension adjustment. Furthermore, the linear guide float 201 moves horizontally.

[0071] In some embodiments, the tension adjustment device for the battery material further includes: a controller; the controller is used to control the linear guide rail floating device 201 to move in the horizontal direction so that the tension of the battery material during the winding process satisfies the corresponding tension mode; the tension mode indicates whether the tension of the battery material during the winding process is constant or variable.

[0072] The controller is a control device within the battery material tension adjustment device, used to control various components within the device. Alternatively, the controller can be a servo drive, a programmable logic controller (PLC), or other similar device. The tension mode indicates whether the tension of the battery material during the winding process is constant or variable.

[0073] In one feasible implementation, multiple tension modes can be set based on business needs. Thus, a controller can be used to control the linear guide float 201 to move horizontally, controlling the tension of the battery material during the winding process within a corresponding tension mode to meet the various tension requirements of the battery material. Furthermore, the controller can conveniently and quickly control the linear guide float 201 to achieve precise tension control. For example, tension modes can include constant tension and variable tension. Constant tension refers to a constant tension value during the winding process, while variable tension refers to a continuously changing tension value during the winding process.

[0074] Furthermore, in some embodiments, the controller is also used to control the linear guide floating device 201 to move in the horizontal direction when the tension mode of the battery material is constant tension, so that the tension value of the battery material is constant at the tension setting value for the constant tension.

[0075] The constant tension setting value is the tension value that the battery material must maintain when the tension mode is constant tension. For example, the constant tension setting value can be pre-set, such as 150 N / m (Newtons / meter). The specific setting can be based on business needs and business experience, and is not limited in this embodiment of the present disclosure.

[0076] In a feasible implementation, when the tension mode is constant tension, if the tension setting value for constant tension is 150N / m, then when the tension mode of the battery material is constant tension, the linear guide rail floating device 201 can be controlled by the controller to move in the horizontal direction so that the tension value of the battery material is constant at 150N / m; in this way, the tension value of the battery material can be kept constant at a fixed tension value to meet the constant tension requirement of the battery material.

[0077] In some embodiments, the controller is further used to control the linear guide floating device 201 to move in the horizontal direction when the tension mode of the battery material is variable tension, so that the tension value of the battery material meets the tension setting value corresponding to different winding diameters.

[0078] Variable tension refers to setting different tension values ​​based on the reel diameter. This means the tension continuously changes based on the reel diameter. For example, for a reel diameter between 100mm and 200mm, the tension setting is 200N / m; for a reel diameter between 200mm and 300mm, the tension setting is 150N / m.

[0079] In a feasible implementation, when the tension mode is variable tension, the controller can first determine the current winding diameter of the winding shaft, and then determine the tension setting value corresponding to the current winding diameter, and then control the linear guide floating device 201 to move in the horizontal direction, so that the tension value of the battery material meets the tension setting value corresponding to different winding diameters; in this way, the controller can control the movement of the linear guide floating device 201 to change the tension value of the battery material according to the winding diameter size, thereby meeting the variable tension requirements of the battery material.

[0080] In some embodiments, the linear guide floating device 201 includes: a servo device 2011 and a floating roller 2012 connected to the servo device 2011; the servo device 2011 is used to drive the floating roller 2012 to move in a horizontal direction to adjust the tension of the battery material during the winding process.

[0081] The controller is used to control the movement of the servo device 2011 based on the current tension value and tension mode of the battery material to drive the floating roller 2012 to move in the horizontal direction; the tension mode indicates whether the tension of the battery material during the winding process is constant or variable.

[0082] The linear guide floating device 201 includes a servo device 2011 and a floating roller 2012. The servo device 2011 is controlled by a controller to move so as to drive the floating roller 2012 to move in a horizontal direction. That is, the linear guide floating device 201 is controlled by a controller. In this way, the controller can conveniently and quickly control the linear guide floating device 201 to achieve precise control of the tension.

[0083] In some embodiments, the servo device 2011 includes a telescopic member 2013 and a servo motor 2014 ; the telescopic member 2013 is connected between the servo motor 2014 and the dancing roller 2012 .

[0084] The servo motor 2014 is used to drive the dancing roller 2012 to move horizontally left and right via the telescopic member 2013. Optionally, the servo motor 2014 may be a tension linear servo motor, or a linear displacement cylinder. This is not limited in the present embodiment, as long as the servo motor 2014 can drive the dancing roller 2012 to move horizontally left and right.

[0085] It can be understood that the telescopic member 2013 has high anti-interference ability and wear resistance, and is simple and convenient to install. In this way, the servo motor adjusts the position of the floating roller through the telescopic member, which can eliminate the interference of external forces and make the tension control more accurate.

[0086] During implementation, a tension linear servo motor can be selected as the servo motor 2014 because the driving capability of the tension linear servo motor is better than that of the linear displacement cylinder. Thus, by driving the floating roller 2012 through the tension linear servo motor, the control over the floating roller 2012 can be improved, thereby improving the tension adjustment accuracy.

[0087] In some embodiments, the tension adjustment device for the battery material may further include: a tension sensor 204; the tension sensor 204 is used to detect the tension value of the battery material; and the controller is used to control the linear guide rail floating device 201 to move in the horizontal direction based on the tension value of the battery material detected by the tension sensor 204 to adjust the tension of the battery material during the winding process.

[0088] In some embodiments, the battery material tension adjustment device may further include a displacement sensor for detecting the position of the dancer roller 2012; and a controller for controlling the reeling speed of the reeling shaft 203 based on the position of the dancer roller 2012 detected by the displacement sensor. The displacement sensor may be a displacement ruler, which has high detection accuracy, thereby improving the accuracy of tension adjustment.

[0089] In some embodiments, the device is used to control the horizontal displacement of the linear guide floating device and / or the winding speed of the winding shaft to adjust the tension of the battery material during the winding process.

[0090] The battery material tension adjustment device provided in the embodiment of the present disclosure can not only adjust the tension of the battery material during the winding process by the horizontal displacement of the linear guide floating device, but also adjust the tension of the battery material during the winding process by the winding speed of the winding shaft, or, can also adjust the tension of the battery material during the winding process by both the horizontal displacement of the linear guide floating device and the winding speed of the winding shaft.

[0091] It should be noted that the battery material tension adjustment device provided in the embodiments of the present disclosure adjusts the tension of the battery material during the winding process via a linear guide float. Because the linear guide float has a wide range of motion, the adjustable range of tension is larger. Furthermore, the linear guide float includes a tension linear servo motor and a float roller. Because the tension linear servo motor has a wider range of travel, higher control precision, and more accurate response, the linear servo motor drives the float roller to move, thereby improving the accuracy of tension adjustment. Furthermore, the linear guide float mechanism moves horizontally, eliminating uncontrolled motion and providing greater safety. Furthermore, the displacement sensor has a wider detection range, resulting in a faster response to tension adjustment.

[0092] Based on the aforementioned embodiments, the present disclosure provides a method for adjusting the tension of a battery material. The method can be applied to a battery material tension adjustment device. The device includes a linear guide floating device and a reel. As shown in FIG3 , the method includes the following steps 301 to 302:

[0093] Step 301: Determine the current tension mode of the battery material; the tension mode indicates whether the tension of the battery material during the winding process is constant or variable.

[0094] In a feasible implementation method, after the battery material has passed through the limiting device, wrapped around the linear guide floating device, and connected to the winding shaft, the current tension mode of the battery material can be set in the controller in the tension adjustment device of the battery material. In this way, the current tension mode of the battery material can be obtained.

[0095] In some embodiments, step 301 may be implemented by: determining the current tension mode when it is determined that the battery material already has tension.

[0096] The battery material already has tension, which may mean that tension is already enabled in the battery material; at this time, the current tension mode of the battery material may be determined to adjust the tension of the battery material during the winding process based on the current tension mode.

[0097] In a feasible implementation, determining that the battery material has tension can be achieved by: determining that the battery material has tension when it is determined that the tension adjustment device of the battery material has not issued an alarm signal and a ready signal sent by the tension adjustment device of the battery material is received.

[0098] The alarm signal is used to indicate that the corresponding device is abnormal and needs maintenance, while the ready signal is used to indicate that the corresponding device is ready and can operate normally.

[0099] During implementation, the devices in the battery material tension adjustment device can be provided with a signal receiver and a signal transmitter. In this way, when there is no abnormality in each device and it is ready, a ready signal can be sent to the controller through the signal transmitter; after receiving the ready signal, the controller determines that the battery material has tension.

[0100] Step 302: Based on the current tension mode and the current tension value of the battery material, control the linear guide floating device to move in the horizontal direction to adjust the tension of the battery material during the winding process of the winding shaft.

[0101] In a feasible implementation, the controller can control the horizontal movement direction and distance of the linear guide floating device based on the current tension mode and the current tension value of the battery material, so that the tension of the battery material meets the current tension mode.

[0102] In some embodiments, when the linear guide floating device includes the servo device and a floating roller connected to the servo device, step 302 can be implemented by the following steps 3021 to 3023:

[0103] Step 3021: Determine the current tension value of the battery material through the tension sensor in the tension adjustment device of the battery material.

[0104] In a feasible implementation, the current tension value of the battery material may be detected by a tension sensor in a tension adjustment device of the battery material.

[0105] Step 3022: Determine a target tension setting value based on the current tension mode.

[0106] The target tension setting value is the tension setting value in the current tension mode.

[0107] In a feasible implementation, tension setting values ​​corresponding to different tension modes may be preset, so that the tension setting value corresponding to the current tension mode may be determined and used as the target tension setting value.

[0108] In some embodiments, when the current tension mode is constant tension, step 3022 may be implemented by: determining a first tension setting value for the constant tension; and using the first tension setting value as the target tension setting value.

[0109] There is only one tension setting value for constant tension, and the tension setting value corresponding to constant tension can be called the first tension setting value. When the current tension mode is constant tension, the first tension setting value for constant tension is directly used as the target tension setting value.

[0110] In other embodiments, when the current tension mode is variable tension, step 3022 can be implemented by: determining the current roll diameter of the winding shaft in the tension adjustment device of the battery material; based on the correspondence between the roll diameter size and the tension value, determining the second tension setting value corresponding to the current roll diameter; and using the second tension setting value as the target tension setting value.

[0111] The second tension setting value is the tension setting value corresponding to the current reel diameter in variable tension mode. Variable tension has multiple tension setting values, which can be set based on the reel diameter. The relationship between reel diameter and tension value represents the correlation between the force applied to the battery material during reeling and the reel diameter.

[0112] In a feasible implementation, the specific implementation method for determining the correspondence between the roll diameter and the tension value can be: setting tension setting values ​​corresponding to different roll diameters according to the roll diameter change of the reel during the reeling process to obtain the correspondence.

[0113] Specifically, according to the change of the winding diameter of the winding shaft during the winding process, multiple winding diameter intervals are determined; the tension setting value corresponding to each winding diameter interval is set; the multiple winding diameter intervals and the tension setting value corresponding to each winding diameter interval are stored in correspondence to obtain the corresponding relationship.

[0114] Setting the tension setting values ​​corresponding to different winding diameter intervals is also called adopting interval tension taper (variable tension). During implementation, multiple winding diameter intervals and the tension setting values ​​corresponding to each winding diameter interval are set according to the actual business scenario. The multiple winding diameter intervals are used as key information items, and the tension setting values ​​corresponding to each winding diameter interval are used as value information items. The correspondence between the winding diameter intervals and the tension setting values ​​is established in the form of key-value pairs. In this way, after determining the current winding diameter of the winding shaft, the second tension setting value corresponding to the current winding diameter can be determined from the correspondence; the second tension setting value is used as the target tension setting value.

[0115] Step 3023: Based on the target tension setting value and the current tension value, control the movement of the servo device to drive the floating roller to move in the horizontal direction, and adjust the tension of the battery material during the winding process through the winding shaft to the target tension setting value.

[0116] In a feasible implementation, the controller can control the movement of the servo device based on the target tension setting value and the current tension value to drive the floating roller to move in the horizontal direction, and adjust the tension of the battery material during the winding process through the winding shaft to the target tension setting value, so that the tension of the battery material meets the corresponding tension mode.

[0117] In a feasible implementation, the specific implementation method of step 3023 can be: performing proportional differential integral PID operation on the target tension setting value and the current tension value to obtain the calculated value; adjusting the proportional valve output based on the calculated value, controlling the movement of the servo device to drive the floating roller to move in the horizontal direction, and adjusting the tension of the battery material passing through the winding shaft during the winding process to the target tension setting value.

[0118] Proportional-Integral-Derivative Control (PID) is used to calculate the proportional valve output based on the tension error signal. The proportional (P) operation maintains a proportional relationship between the proportional valve output and the current error. A larger proportional gain increases the controller's response to the error, but excessively high proportional gain can cause system overshoot and oscillation. The integral (I) operation accumulates the error over time. The integral gain can eliminate steady-state error and improve system stability. The derivative (D) operation estimates the current rate of change of the error, predicting error trends and enabling proactive adjustments to reduce system overshoot and oscillation.

[0119] It can be understood that when the tension mode is variable tension, the tension of the battery material is adjusted according to the first tension setting value corresponding to the variable tension to meet the constant tension requirement of the battery material; when the tension mode is constant tension, the tension of the battery material can be adjusted according to the second tension setting value corresponding to the current winding diameter of the reel to meet the variable tension requirement of the battery material. In this way, various tension requirements of the battery material can be met.

[0120] In some embodiments, step 3023 may be implemented by steps 3023a to 3023c as follows:

[0121] Step 3023a: Based on the target tension setting value and the current tension value, control the servo device to move so as to drive the dancing roller to move in a horizontal direction.

[0122] In one feasible implementation, a PID operation can be performed on the current tension value and the target tension setting value, and the analog output of the proportional valve can be adjusted according to the calculated value to control the movement of the servo device to drive the floating roller to move horizontally. Specifically, if the current tension value is greater than the target tension setting value, the tension of the battery material needs to be reduced. In this case, the controller can perform a PID operation on the current tension value and the target tension setting value, adjust the analog output of the proportional valve according to the calculated value, and control the movement of the servo device to drive the floating roller to the right in the horizontal direction. If the current tension value is less than the target tension setting value, the tension of the battery material needs to be increased. In this case, the controller can perform a PID operation on the current tension value and the target tension setting value, adjust the analog output of the proportional valve according to the calculated value, and control the movement of the servo device to drive the floating roller to the left in the horizontal direction.

[0123] Among them, the conversion formula between the tension value and the proportional valve can be: proportional valve analog output = F*k+b; F is the tension value, k is the proportional value, and b is the compensation value. The compensation value can be obtained based on the corresponding relationship between multiple sets of proportional valve analog outputs and actual tension.

[0124] Step 3023b: Determine the target position of the dancer roller after it moves.

[0125] Among them, the target position is the position where the floating stick is located after moving.

[0126] In a feasible implementation, a displacement sensor may be used to determine the target position of the dancer roller after it moves.

[0127] Step 3023c: Based on the target position, adjust the winding speed of the winding shaft in the tension adjustment device of the battery material, and adjust the tension of the battery material to the target tension setting value through the winding shaft during the winding process.

[0128] In some embodiments, the implementation method of "adjusting the winding speed of the winding shaft in the tension adjustment device of the battery material based on the target position" in step 3023c can be: determining the reference position when the floating roller is in the middle position; adjusting the winding speed of the winding shaft based on the target position and the reference position.

[0129] The reference position may refer to the position of the dancer roller when it is in the middle position. As shown in FIG4 , the middle position of the total length of the telescopic rod 2013 may be used as the middle position, the movable area to the left of the middle position may be used as the winding area, and the movable area to the right of the middle position may be used as the unwinding area.

[0130] In one feasible implementation, a PID calculation can be performed on the reference and target positions. The calculated value is then used to adjust the analog output of the proportional valve to control the reel's reeling speed. This not only adjusts tension by controlling the servo device to drive the dancer (linear guide float) but also adjusts the reel's reeling speed based on the dancer's position, further improving tension adjustment accuracy.

[0131] The tension adjustment method provided in the embodiment of the present disclosure not only drives the floating roller to move according to the current tension value of the battery material when adjusting the tension, but also adjusts the winding speed of the winding shaft according to the distance the floating roller moves; in this way, the tension adjustment accuracy can be made higher.

[0132] The following describes the application of the tension adjustment method for battery materials provided by the embodiments of the present disclosure in actual scenarios.

[0133] The present disclosure provides a method for adjusting the tension of a battery material. The method can be executed by a PLC of a battery material tension adjustment device. As shown in FIG5 , the method includes the following steps 501 to 506:

[0134] Step 501: When it is determined that the battery material tension adjustment device has not issued an alarm signal and a ready signal is received from the battery material tension adjustment device, it is determined that the battery material has tension.

[0135] Specifically, after the battery material tension adjustment device is powered on, if none of the components such as the reel and the linear guide floating device send out an alarm signal and the ready signal (ready) sent by each component is received, it is determined that the tension is enabled, that is, the battery material has tension.

[0136] Step 502 , determine whether the current tension mode of the battery material is constant tension; if it is constant tension, execute step 503 ; if not, execute step 505 .

[0137] Step 503: Determine a first tension setting value for constant tension.

[0138] Step 504: Output the first tension setting value as the target tension setting value.

[0139] Step 505: Determine the current winding diameter of the winding shaft.

[0140] Step 506: Determine a second tension setting value corresponding to the current roll diameter.

[0141] Step 507: Use the second tension setting value as the target tension setting value.

[0142] Step 508: Obtain the current tension value of the battery material through the tension sensor.

[0143] Step 509: Perform PID calculation on the current tension value and the target tension setting value to obtain a calculated value, adjust the proportional valve output according to the calculated value, control the movement of the tension linear servo motor, and drive the dancer to move to adjust the tension to the target tension setting value.

[0144] Step 510: Obtain the target position of the dancer roller after movement by using the displacement ruler.

[0145] Step 511: Perform PID calculation based on the target position and the reference position, and drive the servo according to the calculated value to adjust the winding speed of the winding shaft, thereby achieving the purpose of tension control.

[0146] The control involved in the tension adjustment method of the battery material in Figure 5 is explained:

[0147] Variable Tension: Constant tension control is generally used in winding applications. However, as the roll diameter increases, the so-called "bamboo shoot" phenomenon may occur. Therefore, the tension of the battery material needs to be adjusted accordingly with the change in roll diameter. This method of adjusting tension according to roll diameter is called tension taper control.

[0148] The disclosed embodiment adopts interval tension taper (variable tension), and sets multiple roll diameter intervals according to the on-site conditions of the actual scene, and different roll diameter intervals correspond to different tension setting values. Specifically, the tension setting values ​​corresponding to different roll diameter intervals can be set according to the roll diameter and debugging experience value of the product. For example, the roll diameter interval is 100 mm to 200 mm, and the tension setting value is 200 N / m; the roll diameter interval is 200 mm to 300 mm, and the tension setting value is 150 N / m. Among them, the tension setting value can be obtained by solving the corresponding relationship between multiple groups of analog output values ​​and actual pressure: analog output = F*k+b; wherein, F represents the tension setting value, k represents the proportional value, and b is the compensation value; k and b are solved by selecting the corresponding relationship between multiple groups of analog output values ​​and actual tension.

[0149] PID calculation of tension: PID calculation is performed through the tension value fed back by the tension sensor and the tension set value, the proportional valve output is adjusted, the movement of the tension float cylinder is controlled, and the tension is adjusted to the appropriate value.

[0150] Winding speed synchronization of the winding shaft: The servo speed synchronization motion module can be used to detect the target position of the floating roller after movement in real time according to the displacement ruler. PID calculation is performed based on the target position and the reference position when the floating roller is in the middle position to obtain the appropriate synchronization speed value, drive the servo action, and achieve the purpose of tension control.

[0151] For example, during the winding process, the battery material can be wound using the tension adjustment device for the battery material provided in the embodiments of the present disclosure. Specifically, the battery material is passed between the traction shaft 2021 and the pressure roller 2022, and then wound onto the reel 203 via the tension sensor 204 and the floating roller 2012. During the winding process, the tension sensor 204 detects the current tension value of the battery material. If the current tension mode is constant tension, it is determined whether the current tension value is the same as the first tension setting value corresponding to the constant tension. If they are different, the servo motor 2014 is controlled to move based on the difference between the current tension value and the first tension setting value, and the floating roller 2012 is driven to move horizontally via the telescopic member 2013 to adjust the tension of the battery material to the first tension setting value. When the current tension mode is variable tension, the current winding diameter of the winding shaft 203 is determined, the second tension setting value corresponding to the current winding diameter is determined, and the tension of the battery material is adjusted to the second tension setting value. In this way, the tension of the battery material is continuously adjusted according to the change in the winding diameter of the winding shaft 203 to achieve dynamic adjustment of the tension.

[0152] The protection points of the disclosed embodiments include at least: 1) a linear guide float device; the linear guide float device comprises a servo mechanism consisting of a telescopic member and a tension linear servo motor, and a floating roller connected to the servo mechanism. The tension linear servo motor drives the floating roller, resulting in a larger range of movement, a wider adjustable tension range, faster response speed, and higher tension adjustment accuracy. 2) a displacement sensor detects the position of the floating roller in real time, resulting in a wider range of detection and faster PID control response.

[0153] Those skilled in the art will appreciate that the embodiments of the present disclosure may be provided as methods, systems, or computer program products. Therefore, the present disclosure may take the form of hardware embodiments, software embodiments, or embodiments combining software and hardware. Furthermore, the present disclosure may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage and optical storage, etc.) containing computer-usable program code.

[0154] The present disclosure is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present disclosure. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device produce a device for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0155] These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce a product including an instruction device that implements the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0156] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, so that the instructions executed on the computer or other programmable device provide steps for implementing the functions specified in one or more processes in the flowchart and / or one or more boxes in the block diagram.

[0157] The above description is merely a preferred embodiment of the present disclosure and is not intended to limit the scope of protection of the present disclosure. Industrial Applicability

[0158] The battery material tension adjustment device and method provided by the disclosed embodiments include: a linear guide float device, a reel, and a limit device; the battery material passes through the limit device, winds around the linear guide float device, and connects to the reel, so that the reel can be controlled to achieve reeling of the battery material; the linear guide float device is used to move horizontally to adjust the tension of the battery material during the reeling process. As such, since the linear guide float device has a large range of movement, the tension adjustment range is large; and since the linear guide float mechanism moves horizontally, there is no uncontrolled movement, resulting in high safety. This overcomes the problems of the prior art, such as the small adjustable tension range and the safety risks caused by the uncontrolled movement of the swing arm.

Claims

1. A battery material tension adjustment device, the device comprising: Linear guide floating device, reel and limit device; The battery material passes through the limiting device, passes through the linear guide floating device, and is connected to the winding shaft, so that the winding of the battery material is achieved by controlling the winding shaft; The linear guide floating device is used to move in a horizontal direction to adjust the tension of the battery material during the winding process.

2. The device according to claim 1, wherein: The linear guide floating device comprises: a servo device and a floating roller connected to the servo device; The servo device is used to drive the floating roller to move in a horizontal direction to adjust the tension of the battery material during the winding process.

3. The device according to claim 2, wherein: The device also includes: a controller; The controller is used to control the movement of the servo device based on the current tension value and tension mode of the battery material to drive the floating roller to move in the horizontal direction; the tension mode represents whether the tension of the battery material during the winding process is constant or variable.

4. The device according to claim 2 or 3, wherein: The servo device comprises a telescopic member and a servo motor; The telescopic member is connected between the servo motor and the floating roller.

5. The device according to any one of claims 1 to 4, wherein: The device also includes: a controller; The controller is used to control the linear guide floating device to move in the horizontal direction so that the tension of the battery material during the winding process satisfies the corresponding tension mode; the tension mode indicates whether the tension of the battery material during the winding process is constant or variable.

6. The device according to claim 5, wherein: The controller is further used to control the linear guide floating device to move in the horizontal direction when the tension mode of the battery material is constant tension, so that the tension value of the battery material is constant at the tension setting value for the constant tension.

7. The device according to claim 5, wherein: The controller is also used to control the linear guide floating device to move in the horizontal direction when the tension mode of the battery material is variable tension, so that the tension value of the battery material meets the tension setting value corresponding to different winding diameters.

8. The apparatus according to any one of claims 3 to 7, wherein: The device further comprises: a tension sensor; the tension sensor is used to detect the tension value of the battery material; The controller is specifically used to control the linear guide floating device to move in the horizontal direction based on the tension value of the battery material detected by the tension sensor, so as to adjust the tension of the battery material during the winding process.

9. The apparatus according to any one of claims 3 to 8, wherein: The device further comprises: a displacement sensor; the displacement sensor is used to detect the position of the floating roller; The controller is specifically used to control the winding speed of the winding shaft based on the position of the floating roller detected by the displacement sensor.

10. The device according to any one of claims 1 to 9, wherein: The limiting device comprises a traction shaft and a pressure roller shaft.

11. A method for adjusting the tension of a battery material, applied to a tension adjusting device for a battery material, the device comprising a linear guide floating device and a winding shaft, the method comprising: Determining a current tension mode of the battery material; The tension mode indicates whether the tension of the battery material during the winding process is constant or variable; Based on the current tension mode and the current tension value of the battery material, the linear guide floating device is controlled to move in the horizontal direction to adjust the tension of the battery material during the winding process through the winding shaft.

12. The method according to claim 11, wherein: The linear guide floating device includes the servo device and a floating roller connected to the servo device; Based on the current tension mode and the current tension value of the battery material, the linear guide floating device is controlled to move in the horizontal direction to adjust the tension of the battery material during the winding process through the winding shaft, including: The tension sensor in the tension adjustment device of the battery material determines the tension of the battery material when The tension value before Based on the current tension mode, determining a target tension setting value; Based on the target tension setting value and the current tension value, the servo device is controlled to move so as to drive the floating roller to move in the horizontal direction, and the tension of the battery material during the winding process through the winding shaft is adjusted to the target tension setting value.

13. The method according to claim 12, wherein: The step of determining a target tension setting value based on the current tension mode includes: When the current tension mode is constant tension, determining a first tension setting value for the constant tension; The first tension setting value is used as the target tension setting value.

14. The method according to claim 12, wherein: The step of determining a target tension setting value based on the current tension mode includes: When the current tension mode is variable tension, determining the current winding diameter of the winding shaft in the tension adjustment device of the battery material; Based on the corresponding relationship between the roll diameter and the tension value, determining a second tension setting value corresponding to the current roll diameter; The second tension setting value is used as the target tension setting value.

15. The method according to any one of claims 12 to 14, wherein: The step of controlling the servo device to move based on the target tension setting value and the current tension value to drive the floating roller to move in a horizontal direction, and adjusting the tension of the battery material during the winding process through the winding shaft to the target tension setting value includes: Based on the target tension setting value and the current tension value, controlling the servo device to move so as to drive the dancing roller to move in a horizontal direction; Determining a target position of the dancer roller after the dancer roller moves; Based on the target position, the winding speed of the winding shaft is adjusted, and the tension of the battery material during the winding process of the winding shaft is adjusted to the target tension setting value.

16. The method according to claim 15, wherein: The adjusting the reeling speed of the reeling shaft based on the target position includes: determining a reference position when the dancer roller is in a neutral position; Based on the target position and the reference position, the winding speed of the winding shaft is adjusted.

17. The method according to any one of claims 11 to 16, wherein: Before determining the current tension mode of the battery material, the method further includes: In the case where it is determined that the battery material tension adjustment device has not issued an alarm signal and a ready signal sent by the battery material tension adjustment device is received, determining that the battery material has tension; Accordingly, determining the current tension mode of the battery material includes: When it is determined that the battery material already has tension, the current tension mode is determined.

18. The method according to any one of claims 14 to 17, wherein: Before determining the second tension setting value corresponding to the current roll diameter based on the corresponding relationship between the roll diameter and the tension value, the method further includes: The corresponding relationship is obtained by setting tension setting values ​​corresponding to different winding diameters according to the change of the winding diameter of the winding shaft during the winding process.

19. The method according to claim 18, wherein: The setting of tension setting values ​​corresponding to different reel diameters according to the reel diameter change of the reel shaft during the reeling process to obtain the corresponding relationship includes: Determining a plurality of winding diameter intervals according to a change in winding diameter of the winding shaft during the winding process; Set the tension setting value corresponding to each winding diameter range; The plurality of winding diameter intervals and the tension setting value corresponding to each winding diameter interval are stored correspondingly to obtain the corresponding relationship.

20. The method according to any one of claims 12 to 14, wherein: The step of controlling the servo device to move based on the target tension setting value and the current tension value to drive the floating roller to move in a horizontal direction, and adjusting the tension of the battery material during the winding process through the winding shaft to the target tension setting value includes: Performing proportional differential integral PID operation on the target tension setting value and the current tension value to obtain a calculated value; The proportional valve output is adjusted based on the calculated value to control the movement of the servo device to drive the The floating roller moves in a horizontal direction to adjust the tension of the battery material during the winding process through the winding shaft to the target tension setting value.

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