Tension adjusting equipment and method for battery material

Abstract

The embodiment of the invention discloses tension adjusting equipment for a battery material. The equipment comprises a linear guide rail floating device, a winding shaft and a limiting device, the battery material penetrates through the limiting device, winds around the linear guide rail floating device and is connected with the winding shaft, so that the winding of the battery material is realized by controlling the winding shaft; the linear guide rail floating device is used for moving in the horizontal direction so as to adjust the tension of the battery material in the winding process. The embodiment of the invention further discloses a tension adjusting method.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a tension adjustment device and method for battery materials. Background Art

[0002] During the reeling process of lithium battery materials, the tension of the materials will affect the performance of the battery cells and batteries. In the prior art, the tension of the materials is generally adjusted by a swing arm mechanism, but the swing range of the swing arm mechanism is limited, the adjustable range of the tension is small, and there are safety risks caused by the uncontrolled action of the swing arm. Summary of the invention

[0003] In order to solve the above technical problems, the embodiments of the present application 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 movement of the swing arm in the prior art.

[0004] The technical solution of this application is implemented as follows:

[0005] A battery material tension adjustment device, the device comprising: a linear guide floating device, a winding shaft and a limit device;

[0006] 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;

[0007] 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.

[0008] It can be understood that the linear guide floating device has a larger moving range and a larger tension adjustment interval; moreover, the linear guide floating mechanism moves in the horizontal direction, there is no uncontrolled movement, and the safety is higher.

[0009] In the above scheme, the linear guide floating device includes: a servo device and a floating roller connected to the servo device;

[0010] 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.

[0011] 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.

[0012] In the above solution, the device further includes: a controller;

[0013] The controller is used to control the movement of the servo device to drive the floating roller to move in a horizontal direction.

[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 a controller to drive the floating roller to move in a 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;

[0016] The telescopic member is connected between the servo motor and the floating roller.

[0017] 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 floating roller through the telescopic member, which can eliminate the interference of external forces and make the tension adjustment more accurate.

[0018] In the above solution, the device further includes: a controller;

[0019] 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.

[0020] 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.

[0021] In the above scheme, 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 constant tension, so that the tension value of the battery material is constant at the tension setting value for the constant tension.

[0022] It can be understood that the controller can control the movement of the linear guide floating device to make the tension value of the battery material constant at a fixed tension value, thereby meeting the constant tension requirement of the battery material.

[0023] In the above scheme, 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.

[0024] 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 demand of the battery material.

[0025] A method for adjusting the tension of a battery material is applied to a tension adjusting device for a battery material, the device comprising a linear guide floating device and a winding shaft, and the method comprises:

[0026] 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;

[0027] 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.

[0028] It can be understood that the linear guide floating device has a large moving range, 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.

[0029] In the above scheme, the linear guide floating device includes the servo device and a floating roller connected to the servo device;

[0030] 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:

[0031] Determining the current tension value of the battery material by means of a tension sensor in the tension adjustment device of the battery material;

[0032] Based on the current tension mode, determining a target tension setting value;

[0033] 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.

[0034] 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.

[0035] In the above solution, determining the target tension setting value based on the current tension mode includes:

[0036] When the current tension mode is constant tension, determining a first tension setting value for the constant tension;

[0037] The first tension setting value is used as the target tension setting value.

[0038] 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.

[0039] In the above solution, determining the target tension setting value based on the current tension mode includes:

[0040] 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;

[0041] 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;

[0042] The second tension setting value is used as the target tension setting value.

[0043] 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 demand of the battery material.

[0044] In the above scheme, based on the target tension setting value and the current tension 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 during the winding process through the winding shaft to the target tension setting value, includes:

[0045] 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;

[0046] Determining a target position of the dancer roller after the dancer roller moves;

[0047] 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.

[0048] 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 adjustment accuracy of the tension.

[0049] In the above solution, adjusting the reeling speed of the reeling shaft based on the target position includes:

[0050] determining a reference position when the dancer roller is in a neutral position;

[0051] Based on the target position and the reference position, the winding speed of the winding shaft is adjusted.

[0052] It can be understood that the position of the floating 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.

[0053] In the above solution, before determining the current tension mode of the battery material, the method further includes:

[0054] 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;

[0055] Accordingly, determining the current tension mode of the battery material includes:

[0056] When it is determined that the battery material already has tension, the current tension mode is determined.

[0057] It can be understood that using the alarm status and the ready 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.

[0058] The battery material tension adjustment device and method provided in the embodiment of the present application includes: a linear guide floating device, a winding shaft and a limit device; the battery material passes through the limit device, passes through the linear guide floating device, and is connected to the winding shaft to achieve winding of the battery material 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. In this way, since the linear guide floating device has a large moving range, the tension adjustment range is large; and the linear guide floating mechanism moves in the horizontal direction, there is no uncontrolled action, and the safety is high, which overcomes the problem of small adjustable tension range and safety risks caused by uncontrolled action of the swing arm in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a structural schematic diagram of a tension adjustment device based on a swing arm mechanism;

[0060] Figure 2 A schematic diagram of the structure of a tension adjustment device for battery materials provided in an embodiment of the present application;

[0061] Figure 3 A schematic diagram of a process for adjusting tension of a battery material provided in an embodiment of the present application;

[0062] Figure 4 A schematic diagram of the structure of a telescopic rod 2013 provided in an embodiment of the present application;

[0063] Figure 5 A schematic flow chart of a method for adjusting tension of a battery material provided in an embodiment of the present application.

[0064] The reference numerals included in the specific implementation manner are as follows:

[0065] Figure 1 : Traction shaft 101, pressure roller 102, tension sensor 103, floating roller 104, winding shaft 105, potentiometer 106, swing rod cylinder 107, swing rod low limit 108, swing rod high limit 109, swing rod 110;

[0066] 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, winding shaft 203, tension sensor 204. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0068] It should be understood that the "embodiments of the present application" or "the aforementioned embodiments" mentioned throughout the specification mean that specific features, structures or characteristics related to the embodiments are included in at least one embodiment of the present application. Therefore, "in the embodiments of the present application" or "in the aforementioned embodiments" appearing throughout the specification may 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 application, the size of the sequence 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 application. The above-mentioned sequence numbers of the embodiments of the present application are for description only and do not represent the advantages and disadvantages of the embodiments.

[0069] Unless otherwise specified, the electronic device performs any step in the embodiments of the present application, and the processor of the electronic device may perform the step. It is also worth noting that the embodiments of the present application 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 application can be independently executed by the electronic device, that is, when the electronic device executes any step in the following embodiments, it may not rely on the execution of other steps.

[0070] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0071] In order to better understand the tension adjustment device for battery materials provided in the embodiments of the present application, the scheme of the tension adjustment device based on the swing arm mechanism in the prior art is first described below.

[0072] Reference Figure 1 As shown, 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 swing rod cylinder 107, a swing rod low limit 108, a swing rod high limit 109, and a swing rod 110.

[0073] The swing arm 110, the swing arm cylinder 107 and the floating roller 104 constitute a swing arm mechanism, which adjusts the tension of the battery material during the winding process by swinging left and right. Figure 1 The area between the rocker lower limit 108 and the rocker upper limit 109 is the movable area of ​​the rocker.

[0074] Figure 1 The line with an arrow in the figure can refer to the battery material. After the battery material passes through the limiting mechanism composed of the traction shaft 101 and the pressure roller 102, it passes through the tension sensor 103 and the floating roller 104 and is connected to the winding shaft 105 to realize the winding of the battery material by controlling the winding shaft 105. Specifically, the tension value of the battery material can be obtained by the tension sensor 103. When the tension value is large, the swing rod 110 is driven to move by controlling the swing rod cylinder 107, thereby driving the floating roller 104 to move to adjust the tension of the battery material; the position of the floating roller 104 can also be detected by the potentiometer 106 to avoid safety problems caused by abnormal movement of the floating roller 104.

[0075] from Figure 1 It can be clearly seen that the range of movement of the swing rod is narrow, so the range of tension that can be adjusted by the swing rod is limited, and there are problems such as a small adjustable range of tension and low tension adjustment accuracy; in other words, the setting range of the high and low limits limits the adjustment range of tension. In addition, although the range of movement of the swing rod has been limited by setting the swing rod low limit 108 and the swing rod high limit 109 to ensure the safety of the equipment; however, when the belt breaks, the tension value of the tension sensor is 0, at this time the proportional valve output of the floating roller 104 is the maximum opening, and the swing rod will automatically and quickly swing to the low limit. This operation is an uncontrolled action, and there is a safety risk that the swing rod exceeds the low limit due to excessive speed and affects other components. In addition, the detection range of the potentiometer is small, which makes the accuracy of the detected movement displacement of the swing rod low, which in turn leads to the inaccurate accuracy of the tension adjustment.

[0076] To this end, the present application embodiment provides a battery material tension adjustment device, see Figure 2The tension adjustment device of the battery material may include: a linear guide floating device 201, a winding shaft 203 and a limit device 202; the battery material ( Figure 2 The line with an arrow in the figure) passes through the limiting device 202, passes through 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.

[0077] Among them, the battery material can be aluminum foil, copper foil and other materials. The limit device 202 is used to fix the battery material, and can also be used to adjust the thickness of the battery material; in a feasible implementation, the limit device 202 can include a traction shaft 2021 and a pressure roller shaft 2022. The linear guide floating device 201 can be an important component for adjusting the tension of the battery material; specifically, the linear guide floating device 201 adjusts the force of the battery material by moving in the horizontal direction to achieve tension adjustment of the battery material. The winding shaft 203 is the shaft for winding the battery material, which is usually made of metal or plastic.

[0078] During the winding process, the tension of the battery material can be adjusted by controlling the linear guide floating device 201 to move left and right in the horizontal direction; specifically, if the current tension value of the battery material is large, the linear guide floating device 201 can be controlled to move 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 left in the horizontal direction to increase the tension of the battery material.

[0079] It can be understood that the linear guide floating device 201 moves in the horizontal direction without affecting other components in the device, and there is no uncontrolled movement, so the safety is high. In addition, the linear guide floating device 201 has a large movement range and a large tension adjustment range; and the linear guide floating device 201 moves in the horizontal direction.

[0080] In some embodiments, the tension adjustment device for the battery material also 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.

[0081] The controller is a control device in the tension adjustment device of the battery material, and is used to control various components in the tension adjustment device of the battery material. Optionally, the controller can be a servo drive, a programmable logic controller (PLC), etc. The tension mode is used to characterize whether the tension of the battery material during the winding process is constant or variable.

[0082] In a feasible implementation, multiple tension modes can be set according to business needs; in this way, the linear guide floating device 201 can be controlled to move in the horizontal direction through the controller, and the tension of the battery material during the winding process can be controlled in the corresponding tension mode to meet the various tension requirements of the battery material; and the linear guide floating device 201 can be easily and quickly controlled through the controller to achieve precise control of the tension. Exemplarily, the tension mode can include constant tension and variable tension; constant tension can refer to the tension value of the battery material during the winding process is always a constant value, and variable tension can refer to the tension value of the battery material during the winding process is constantly changing.

[0083] 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.

[0084] The tension setting value for constant tension is the tension value that the battery material must maintain when the tension mode is constant tension. For example, the tension setting value for constant tension can be preset, and the tension setting value for constant tension can be set to 150N / m (Newton / meter). It can be set according to business needs and business experience, and the embodiment of the present application does not limit this.

[0085] 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 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.

[0086] 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 variable tension, so that the tension value of the battery material meets the tension setting value corresponding to different winding diameters.

[0087] Among them, variable tension can refer to setting different tension setting values ​​according to the reel diameter of the reel, so that the variable tension is constantly changing according to the reel diameter of the reel. For example, the tension setting value in the range of 100 mm to 200 mm is 200 N / m; the tension setting value in the range of 200 mm to 300 mm is 150 N / m.

[0088] 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, thereby meeting the variable tension demand of the battery material.

[0089] 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.

[0090] The controller is used to control the movement of the servo device 2011 to drive the floating roller 2012 to move in a horizontal direction.

[0091] The linear guide floating device 201 includes a servo device 2011 and a floating roller 2012. The servo device 2011 is controlled to move by a controller 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 linear guide floating device 201 can be easily and quickly controlled by the controller to achieve precise control of the tension.

[0092] 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 floating roller 2012 .

[0093] The servo motor 2014 is used to drive the floating roller 2012 to move left and right in the horizontal direction through the telescopic member 2013. Optionally, the servo motor 2014 can be a tension linear servo motor, or the servo motor 2014 can also be a linear displacement cylinder, which is not limited in the embodiment of the present application, as long as the servo motor 2014 can drive the floating roller 2012 to move left and right in the horizontal direction.

[0094] 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.

[0095] During implementation, a tension linear servo motor can be selected as the servo motor 2014 because: the driving ability of the tension linear servo motor is better than that of the linear displacement cylinder; thus, by driving the floating roller 2012 with the tension linear servo motor, the control over the floating roller 2012 can be improved, thereby improving the adjustment accuracy of the tension.

[0096] In some embodiments, the tension adjustment device for the battery material may also 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 floating device 201 to move in the horizontal direction based on the tension value of the battery material detected by the tension sensor 204, so as to adjust the tension of the battery material during the winding process.

[0097] In some embodiments, the battery material tension adjustment device may further include: a displacement sensor; the displacement sensor is used to detect the position of the floating roller 2012; and the controller is used to control the winding speed of the winding shaft 203 based on the position of the floating roller 2012 detected by the displacement sensor. The displacement sensor may be a displacement ruler, which has a high detection accuracy, thereby improving the tension adjustment accuracy.

[0098] It should be noted that the tension adjustment device for battery materials provided in the embodiment of the present application adjusts the tension of the battery materials during the winding process through a linear guide floating device. Since the linear guide floating device has a wider range of movement, the adjustable range of tension is larger; and the linear guide floating device includes a tension linear servo motor and a floating roller. Since the travel range of the tension linear servo motor is larger, the control accuracy is higher, and the response is more accurate, the adjustment accuracy of the tension can be improved by driving the floating roller to move through the linear servo motor; and the linear guide floating mechanism moves in the horizontal direction, there is no uncontrolled action, and the safety is higher. Furthermore, the detection range of the displacement sensor is larger, so the response of the tension adjustment is faster.

[0099] Based on the above embodiments, the present application provides a method for adjusting the tension of a battery material, which can be applied to a tension adjustment device for a battery material. The device includes a linear guide floating device and a winding shaft. Figure 3 As shown, the method includes the following steps 301 to 302:

[0100] Step 301 : determining 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.

[0101] In a feasible implementation, after the battery material has passed through the limiting device, passed through 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.

[0102] 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.

[0103] 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.

[0104] In a feasible implementation, determining that the battery material has tension may be implemented 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 has been received.

[0105] Among them, the alarm signal is used to indicate that the corresponding device is abnormal and needs maintenance. The ready signal is used to indicate that the corresponding device is ready and can operate normally.

[0106] During implementation, the components in the tension adjustment device for the battery material may be provided with a signal receiver and a signal transmitter. Thus, when all components are normal and ready, a ready signal may be sent to the controller via the signal transmitter. After receiving the ready signal, the controller determines that the battery material has tension.

[0107] 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 through the winding shaft.

[0108] 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.

[0109] 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:

[0110] Step 3021: Determine the current tension value of the battery material through the tension sensor in the tension adjustment device of the battery material.

[0111] 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.

[0112] Step 3022: Determine a target tension setting value based on the current tension mode.

[0113] The target tension setting value is the tension setting value in the current tension mode.

[0114] 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.

[0115] In some implementations, 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.

[0116] There is only one tension setting value for constant tension, and the tension setting value corresponding to the constant tension can be called the first tension setting value. When the current tension mode is constant tension, the first tension setting value for the constant tension is directly used as the target tension setting value.

[0117] In other embodiments, when the current tension mode is variable tension, step 3022 can be implemented by: 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 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.

[0118] Among them, the second tension setting value is the tension setting value corresponding to the current winding diameter of the winding shaft in the variable tension mode. There are multiple tension setting values ​​corresponding to the variable tension; the multiple tension setting values ​​corresponding to the variable tension can be set according to the winding diameter of the winding shaft. The corresponding relationship between the winding diameter and the tension value represents the correlation between the degree of force applied to the battery material during the winding process and the winding diameter of the winding shaft.

[0119] In a feasible implementation method, an interval tension taper (variable tension) can be used; specifically, multiple winding diameter intervals and the tension setting value corresponding to each winding diameter interval are set according to the actual situation of the business scenario, and the multiple winding diameter intervals are used as key information items, and the tension setting value corresponding to each winding diameter interval is used as a value information item, so as to establish a corresponding relationship between the winding diameter interval and the tension setting value in the form of a key-value pair; 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 corresponding relationship; the second tension setting value is used as the target tension setting value.

[0120] 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.

[0121] 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.

[0122] 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 winding shaft to meet the variable tension requirement of the battery material. In this way, various tension requirements of the battery material can be met.

[0123] In some embodiments, step 3023 may be implemented by steps 3023a to 3023c as follows:

[0124] 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 floating roller to move in a horizontal direction.

[0125] In a 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 value after the operation, and the servo device can be controlled to move to drive the floating roller to move in the horizontal direction. Specifically, if the current tension value is greater than the target tension setting value, it is necessary to reduce the tension of the battery material at this time. 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 value after the operation, and control the movement of the servo device to drive the floating roller to move to the right in the horizontal direction. If the current tension value is less than the target tension setting value, it is necessary to increase the tension of the battery material at this time. 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 value after the operation, and control the movement of the servo device to drive the floating roller to move to the left in the horizontal direction.

[0126] 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 solved based on the corresponding relationship between multiple sets of proportional valve analog outputs and actual tension.

[0127] Step 3023b, determining the target position of the floating roller after the floating roller moves.

[0128] Among them, the target position is the position where the floating stick is located after moving.

[0129] In a feasible implementation, the target position of the floating roller after the floating roller moves can be determined by a displacement sensor.

[0130] Step 3023c, based on the target position, adjusting the winding speed of the winding shaft in the tension adjustment device of the battery material, and adjusting the tension of the battery material to the target tension setting value during the winding process by the winding shaft.

[0131] 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.

[0132] The reference position may refer to the position of the floating roller when it is in the middle position. Figure 4 As shown, the middle position of the total length of the telescopic rod 2013 can be used as the middle position, the moving area to the left of the middle position can be used as the winding area, and the moving area to the right of the middle position can be used as the unwinding area.

[0133] In a feasible implementation, PID calculation can be performed on the reference position and the target position, and the analog output of the proportional valve can be adjusted according to the calculated value to control the winding speed of the winding shaft. In this way, not only the tension is adjusted by controlling the servo device to drive the floating roller (linear guide floating device) to move, but also the winding speed of the winding shaft is adjusted by the position of the floating roller after movement, further improving the adjustment accuracy of the tension.

[0134] The tension adjustment method provided in the embodiment of the present application, when adjusting the tension, not only drives the floating roller to move according to the current tension value of the battery material, 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 higher.

[0135] The following describes the application of the tension adjustment method of battery materials provided in an embodiment of the present application in actual scenarios.

[0136] The present application embodiment provides a method for adjusting the tension of a battery material, which can be executed by a PLC of a battery material tension adjustment device. Figure 5 As shown, the method includes the following steps 501 to 506:

[0137] Step 501: 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, it is determined that the battery material has tension.

[0138] 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 a ready signal (ready) sent by each component is received, it is determined that the tension is enabled, that is, the battery material has tension.

[0139] Step 502 , determining whether the current tension mode of the battery material is constant tension; if it is constant tension, executing step 503 ; if it is not constant tension, executing step 505 .

[0140] Step 503: Determine a first tension setting value for constant tension.

[0141] Step 504: Output the first tension setting value as the target tension setting value.

[0142] Step 505: Determine the current winding diameter of the winding shaft.

[0143] Step 506: Determine a second tension setting value corresponding to the current roll diameter.

[0144] Step 507: Use the second tension setting value as the target tension setting value.

[0145] Step 508: Obtain the current tension value of the battery material through the tension sensor.

[0146] Step 509, perform PID operation on the current tension value and the target tension setting value to obtain the calculated value, adjust the proportional valve output according to the calculated value, control the movement of the tension linear servo motor to drive the floating roller to move, and adjust the tension to the target tension setting value.

[0147] Step 510: Obtain the target position of the floating roller after it moves by using the displacement ruler.

[0148] Step 511, according to the target position and the reference position, a PID operation is performed to obtain a calculated value, and the servo action is driven according to the calculated value to adjust the winding speed of the winding shaft, thereby achieving the purpose of tension control.

[0149] right Figure 5 The control involved in the tension adjustment method of the battery material is explained as follows:

[0150] Variable tension: In the case of winding, constant tension is generally used to control the winding. However, as the diameter of the material roll increases, the so-called "bamboo shoot" phenomenon may occur; therefore, the tension of the battery material needs to be changed accordingly according to the change of the roll diameter. This method of changing the tension with the roll diameter is called taper tension control.

[0151] The embodiment of the present application 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. Exemplarily, 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 solved according to the corresponding relationship between multiple groups of analog output values ​​and actual pressure: analog output = F*k+b.

[0152] 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.

[0153] Winding speed synchronization of the winding shaft: The servo speed synchronous motion module can be used to detect the target position of the floating roller after it moves 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.

[0154] The points to be protected in the embodiment of the present application include at least: 1) a linear guide floating device; the linear guide floating device includes: a servo device composed of a telescopic member and a tension linear servo motor, and a floating roller connected to the servo device; the floating roller is driven to move by the tension linear servo motor, the moving range is larger, the adjustable range of tension is larger, the response speed is faster, and the tension adjustment accuracy is higher. 2) The position of the floating roller is detected in real time by a displacement sensor, the detection moving range is larger, and the PID adjustment response is faster.

[0155] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of hardware embodiments, software embodiments, or embodiments in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0156] The present application 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 application. 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 generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0157] These computer program instructions may also be stored in a computer-readable memory capable of directing 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 an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0158] 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, thereby providing instructions for implementing the process in the computer or other programmable device. Figure 1 A process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0159] The above description is only a preferred embodiment of the present application and is not intended to limit the protection scope of the present application.

Claims

1. A battery material tension adjustment device, characterized in that: The equipment comprises: a linear guide floating device, a winding shaft and a limiting 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, characterized in that 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, characterized in that The device also includes: a controller; The controller is used to control the movement of the servo device to drive the floating roller to move in a horizontal direction.

4. The device according to claim 2 or 3, characterized in that 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, characterized in that 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, characterized in that 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 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, characterized in that 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. A method for adjusting the tension of a battery material, characterized in that: A tension adjustment device for battery materials, the device comprising a linear guide floating device and a winding shaft, and the method comprising: 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; Based on the current tension mode and the current tension value of the battery material, the linear guide rail floating device is controlled to move in a horizontal direction to adjust the tension of the battery material during the winding process through the winding shaft.

9. The method according to claim 8, characterized in that 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: Determining the current tension value of the battery material by means of a tension sensor in the tension adjustment device of the battery material; 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.

10. The method according to claim 9, characterized in that 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.

11. The method according to claim 9, characterized in that 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.

12. The method according to any one of claims 9 to 11, characterized in that 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.

13. The method according to claim 12, characterized in that The step of 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.

14. The method according to any one of claims 8 to 13, characterized in that 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.

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