Diaphragm tension testing system

Abstract

The utility model relates to a diaphragm tension testing system, and belongs to the technical field of battery manufacturing. The utility model provides a diaphragm tension testing system, which comprises an unwinding module, a tension testing module and a tension testing module, the winding module is used for winding the diaphragm; the tension acquisition module and the tension control module are arranged between the unwinding module and the winding module; wherein in the running process of the diaphragm, the tension acquisition module is used for acquiring the tension of the diaphragm, and the tension control module is used for adjusting the tension of the diaphragm in real time according to data acquired by the tension acquisition module so as to provide tension control data for actual lamination operation. The diaphragm tension test system can simulate to obtain a control mode for stably conveying the diaphragm, is applied to the tension control process of the diaphragm of the lamination machine, can improve the lamination quality of the lamination machine, and improves the size precision and safety performance of a battery cell.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a diaphragm tension testing system. Background Art

[0002] During the manufacturing process of lithium batteries, a stacking machine is required to stack the positive electrode sheets, negative electrode sheets and separators to form a battery cell. The separator is an important component of the battery cell. During the stacking process, if the separator tension fluctuates too much, the separator may deform, which not only leads to a large dimensional error of the stacked battery cell, but also poses a serious safety hazard.

[0003] Therefore, how to reduce the tension fluctuation amplitude of the diaphragm during the lamination process of the lamination machine has become a problem that needs to be solved urgently. Utility Model Content

[0004] To this end, the present application proposes a diaphragm tension testing system, which is capable of testing and adjusting the tension changes during the transportation process of the diaphragm, so as to obtain a control method for stable transportation of the diaphragm. It is applied to the tension control process of the diaphragm of the stacking machine, which can improve the stacking quality of the stacking machine and improve the dimensional accuracy and safety performance of the battery cell.

[0005] The diaphragm tension testing system of some embodiments of the present application includes: an unwinding module for unwinding the diaphragm; a winding module for winding the diaphragm; a tension acquisition module and a tension control module, which are arranged between the unwinding module and the winding module; wherein, during the tape running of the diaphragm, the tension acquisition module is used to collect the tension of the diaphragm, and the tension control module is used to adjust the tension of the diaphragm in real time according to the data collected by the tension acquisition module, so as to provide tension control data for the actual lamination operation.

[0006] According to some embodiments of the present application, the tension control module is disposed downstream of the tension acquisition module.

[0007] According to some embodiments of the present application, the tension control module includes: a swing roller for tensioning the diaphragm; and a swing roller driving assembly for driving the swing roller to swing so as to adjust the tension of the diaphragm.

[0008] According to some embodiments of the present application, the tension collection module includes: a collection roller, used to tension the diaphragm; and a tension sensor, installed at the end of the collection roller, used to collect the tension of the diaphragm.

[0009] According to some embodiments of the present application, it also includes: a diaphragm driving module, which is arranged between the unwinding module and the winding module, and is used to drive the diaphragm to move at a preset speed.

[0010] According to some embodiments of the present application, the diaphragm driving module includes: a driving roller assembly, including a motor assembly and a driving roller, the motor assembly is used to drive the driving roller to rotate, and the driving roller is used to tension the diaphragm; a pressing member, used to press the diaphragm against the driving roller.

[0011] According to some embodiments of the present application, it also includes: a diaphragm buffer module, which is arranged between the unwinding module and the winding module and is used to buffer the diaphragm.

[0012] According to some embodiments of the present application, two diaphragm buffer modules are provided, and the two diaphragm buffer modules are respectively arranged upstream and downstream of the diaphragm driving module.

[0013] According to some embodiments of the present application, it also includes: a speed acquisition module, which is arranged between the unwinding module and the winding module, and is used to detect the travel speed of the diaphragm.

[0014] According to some embodiments of the present application, it also includes: a plurality of reversing modules, which are arranged between the unwinding module and the winding module, and are used to tension the diaphragm and change the running direction of the diaphragm.

[0015] According to some embodiments of the present application, the real-time tension of the diaphragm collected by the tension collection module is Q, and the tension control module is used to adjust the tension of the diaphragm in real time so that the tension Q of the diaphragm approaches a preset value Q0.

[0016] Compared with the prior art, this application has the following beneficial effects:

[0017] The diaphragm tension test system of the embodiment of the present application is used to simulate the movement process of the diaphragm. The tension of the diaphragm can be collected through the tension acquisition module. The tension control module adjusts the diaphragm tension in real time according to the data collected by the tension acquisition module to maintain the tension of the diaphragm within a smaller fluctuation range. By obtaining the control data of the tension control module, a control method for stably conveying the diaphragm can be obtained, which is applied to the tension control process of the stacking machine, which can improve the stacking quality of the stacking machine and improve the dimensional accuracy and safety performance of the battery cell.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of a diaphragm tension testing system provided in an embodiment of the present application;

[0021] Figure 2 A schematic diagram of a tension acquisition module and a tension control module in a diaphragm tension testing system provided in an embodiment of the present application;

[0022] Figure 3 A schematic diagram of a diaphragm driving module, a diaphragm buffer module and a speed acquisition module in a diaphragm tension testing system provided in an embodiment of the present application;

[0023] Figure 4 A diagram showing the working principle of the diaphragm tension testing system provided in an embodiment of the present application.

[0024] Icons: 100-diaphragm tension test system; 110-unwinding module; 120-tension acquisition module; 121-acquisition roller; 122-tension sensor; 130-tension control module; 131-swing roller drive assembly; 132-swing roller; 140-diaphragm drive module; 141-drive roller assembly; 1411-motor assembly; 1412-drive roller; 150-diaphragm buffer module; 151-linear motor; 152-cache reversing roller; 160-winding module; 170-reversing module; 171-reversing roller; 180-speed acquisition module; 181-encoder; 182-pressure roller; 191-pneumatic control module; 192-frame module; 193-control device. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution 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. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for which protection is sought, but merely represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0027] In the related art, the stacking machine stacks the positive electrode sheets, the negative electrode sheets and the diaphragm to form a battery cell. The diaphragm is provided by the diaphragm feeding module, and the stacking machine receives the diaphragm and performs the battery cell stacking operation. During the stacking operation of the stacking machine, the diaphragm enters the stacking machine at a preset tape speed, and the tension of the diaphragm is adjusted in real time to reduce the tension fluctuation of the diaphragm during the stacking process to ensure the quality of the battery cell forming. The faster the feedback speed of the diaphragm tension adjustment, the more stable the tension value of the diaphragm, and thus the higher the stacking quality of the battery cell. In order to improve the feedback speed of the diaphragm tension adjustment, it is necessary to study the law of the tension change of the diaphragm during the stacking process of the stacking machine and optimize the optimal tension control mode. However, most of the tension control data is currently obtained during the test stacking process. Due to the need to drive the entire battery cell assembly line and the need to waste electrode material, it is not only costly but also inefficient.

[0028] After research, the inventor found that if the entire movement process of the diaphragm in the stacking machine can be simulated and the tension characteristics of the diaphragm during the stacking process can be obtained through optimized control, the optimal diaphragm tension control method in the stacking machine can be obtained, thereby reducing the tension fluctuation range of the diaphragm.

[0029] Based on the above ideas, the present application proposes a diaphragm tension testing system, which can directly simulate the movement process of the diaphragm during the stacking process of the stacking machine, test and adjust the tension changes during the transportation process of the diaphragm, so as to obtain a control method for stable transportation of the diaphragm. Applying it to the tension control process of the diaphragm of the stacking machine can improve the stacking quality of the stacking machine and improve the dimensional accuracy and safety performance of the battery cell.

[0030] like Figure 1 As shown, the diaphragm tension testing system 100 of the embodiment of the present application includes an unwinding module 110, a tension acquisition module 120, a tension control module 130 and a winding module 160. The unwinding module 110 is used to unwind the diaphragm, and the winding module 160 is used to wind the diaphragm. The tension acquisition module 120 and the tension control module 130 are arranged between the unwinding module 110 and the winding module 160. In the process of the diaphragm running, the tension acquisition module 120 is used to collect the tension of the diaphragm, and the tension control module 130 is used to adjust the tension of the diaphragm in real time according to the data collected by the tension acquisition module 120, so as to provide tension control data for the actual lamination operation.

[0031] In the description of this article, the diaphragm is an important component of the lithium battery; in other embodiments, the diaphragm may also be other material strips that need to be tested for tension.

[0032] The tension control module 130 is connected to the control device 193 described below by wire or radio, and the tension control data can be exported through the control device 193, or the tension control module 130 can be provided with an export interface for exporting the tension control data.

[0033] The diaphragm tension testing system 100 of the embodiment of the present application is used to simulate the movement process of the diaphragm. The tension of the diaphragm can be collected through the tension acquisition module 120. The tension control module 130 adjusts the diaphragm tension in real time according to the data collected by the tension acquisition module 120 to maintain the tension of the diaphragm within a smaller fluctuation range. By obtaining the control data of the tension control module 130, a control method for stably conveying the diaphragm can be obtained, which is applied to the tension control process of the stacking machine, which can improve the stacking quality of the stacking machine and improve the dimensional accuracy and safety performance of the battery cell.

[0034] Specifically, the real-time tension of the diaphragm collected by the tension collection module 120 is Q, and the tension control module 130 is used to adjust the tension of the diaphragm in real time so that the tension Q of the diaphragm approaches the preset value Q0.

[0035] The fluctuation amplitude of the diaphragm tension refers to the maximum difference between the diaphragm tension value Q collected by the tension collection module 120 and Q0. The more timely the tension control module 130 adjusts the diaphragm tension to Q0, the more stable the diaphragm tension fluctuation is.

[0036] In other embodiments, the fluctuation range of the diaphragm may also be limited to a preset range, that is, Q satisfies: Q1≤Q≤Q2. When Q<Q1, Q is adjusted to be close to Q1; when Q>Q2, Q is adjusted to be close to Q2.

[0037] In some embodiments of the present application, the unwinding module 110 includes an air shaft and a motor reducer assembly, the motor reducer assembly includes a motor and a reducer, the motor drives the air shaft to rotate through the reducer, and the air shaft is used to install the diaphragm roll to unwind the diaphragm. Similarly, the winding module 160 also includes an air shaft and a motor reducer assembly for winding the diaphragm, which will not be further described here.

[0038] It is understandable that the membrane is unwound through the unwinding module 110 to simulate the membrane feeding process, and the membrane is unwound through the winding module 160 to simulate the membrane consumption process, such as the membrane consumption process in the lamination operation of the laminating machine.

[0039] like Figure 2 As shown, in some embodiments of the present application, the tension collection module 120 includes a collection roller 121 and a tension sensor 122. The collection roller 121 is used to tension the diaphragm, and the tension sensor 122 is installed at the end of the collection roller 121 to collect the tension of the diaphragm.

[0040] As a preferred embodiment, two tension sensors 122 are provided, and the two tension sensors 122 are respectively provided at both ends of the collection roller 121 to collect tension data at both ends of the collection roller 121; in other embodiments, the tension sensor 122 can also be provided only at one end of the collection roller 121.

[0041] With this arrangement, when the collecting roller 121 carries the traveling diaphragm, the diaphragm is tensioned on the collecting roller 121 , and the real-time tension of the diaphragm is collected by the tension sensor 122 .

[0042] like Figure 2 As shown, in some embodiments of the present application, the tension control module 130 includes a swing roller drive assembly 131 and a swing roller 132, the swing roller 132 is used to tension the diaphragm, and the swing roller drive assembly 131 is used to drive the swing roller 132 to swing to adjust the tension of the diaphragm. The swing roller drive assembly 131 includes a motor and a reducer, and the motor drives the swing roller 132 to swing through the reducer. During the movement of the diaphragm, the swing roller 132 carries the diaphragm, and the tension of the diaphragm can be adjusted by adjusting the position of the swing roller 132. The motor responds to the data collected in real time by the tension acquisition module 120 in a timely manner until the data value Q collected by the tension acquisition module 120 reaches a preset value or falls within a preset range.

[0043] In some embodiments of the present application, the tension control module 130 is disposed downstream of the tension acquisition module 120. That is, along the traveling direction of the diaphragm, the diaphragm passes through the tension acquisition module 120 and the tension control module 130 in sequence.

[0044] Through this setting form, the feedback adjustment mode of "first collect-adjust-collect again-adjust again" can be realized, which can improve the tension collection accuracy of the diaphragm, thereby improving the diaphragm tension control accuracy.

[0045] In other embodiments, the tension control module 130 may also be disposed upstream of the tension acquisition module 120 .

[0046] like Figure 3 As shown, in some embodiments of the present application, the diaphragm tension testing system 100 further includes a diaphragm driving module 140, which is disposed between the unwinding module 110 and the winding module 160, and is used to drive the diaphragm to move at a preset speed.

[0047] Specifically, the diaphragm driving module 140 is located downstream of the tension control module 130 , and the diaphragm passes through the tension acquisition module 120 , the tension control module 130 and the diaphragm driving module 140 in sequence.

[0048] By setting up the diaphragm driving module 140, the diaphragm can be driven to move at a preset speed to simulate the travel speed of the diaphragm during the lamination process, and the optimal tension control method of the diaphragm at the preset speed is obtained through the tension control module 130.

[0049] In other embodiments, the diaphragm driving module 140 may not be provided, and the diaphragm may be driven to move forward by the winding module 160 .

[0050] In some embodiments of the present application, the diaphragm driving module 140 includes a driving roller assembly 141 and a pressure piece (not shown in the figure), the driving roller assembly 141 includes a motor assembly 1411 and a driving roller 1412, the motor assembly 1411 is used to drive the driving roller 1412 to rotate, the driving roller 1412 is used to tension the diaphragm, and the pressure piece is used to press the diaphragm against the driving roller 1412.

[0051] The motor assembly 1411 includes a motor and a reducer, and the motor drives the driving roller 1412 to rotate through the reducer. The clamping member is arranged close to the outer peripheral surface of the driving roller 1412, and the clamping member can press the diaphragm against the outer peripheral surface of the driving roller 1412, so that the driving roller 1412 can drive the diaphragm to move forward through friction during its own rotation. As an example form, the clamping member is a clamping cylinder, which extends to press the diaphragm against the surface of the driving roller 1412, and the clamping cylinder buffers the force on the diaphragm through its own internal air pressure in the extended state, thereby reducing the possibility of damaging the diaphragm. In other embodiments, the clamping member can also be other linear driving members.

[0052] In other embodiments, the diaphragm driving module 140 may also include an active roller and a driven roller, the diaphragm is sandwiched between the active roller and the driven roller, and the active roller and the driven roller jointly drive the diaphragm to move forward.

[0053] In some embodiments of the present application, the diaphragm tension testing system 100 further includes a diaphragm buffer module 150 , which is disposed between the unwinding module 110 and the winding module 160 and is used to buffer the diaphragm.

[0054] The diaphragm buffer module 150 includes a linear motor 151, a buffer reversing roller 152 and a balancing cylinder (not shown in the figure). The linear motor 151 drives the buffer reversing roller 152 to move in a linear direction. The buffer reversing roller 152 is used to tension the diaphragm. The buffered diaphragm length is adjusted by adjusting the different positions of the buffer reversing roller 152 in the linear direction. The balancing cylinder is arranged opposite to the linear motor 151 to maintain the buffer reversing roller 152 in a force balance state during the movement of the buffer reversing roller 152 driven by the linear motor 151, thereby reducing the possibility of positional deviation caused by the diaphragm tension during the buffering process.

[0055] By providing the diaphragm buffer module 150, it is possible to buffer excess diaphragms and realize winding of the diaphragms at a preset speed, thereby simulating the action process of the diaphragms entering the stacking machine at a preset speed.

[0056] like Figure 1 As shown, in some embodiments of the present application, two diaphragm buffer modules 150 are provided, and the two diaphragm buffer modules 150 are respectively provided upstream and downstream of the diaphragm driving module 140 .

[0057] A diaphragm buffer module 150 is provided upstream of the diaphragm driving module 140 to buffer excess diaphragms when the driving speed is reduced; and a diaphragm buffer module 150 is provided downstream of the diaphragm driving module 140 to buffer excess diaphragms when the driving speed is increased.

[0058] It can be understood that the unwinding speed of the unwinding module 110, the driving speed of the diaphragm driving module 140 and the winding speed of the winding module 160 all have corresponding preset values. During operation, if one of them changes, the other two need to adjust the corresponding operating speeds to match the speeds of the three. The diaphragm buffer module 150 caches excess diaphragm during the speed adjustment process.

[0059] like Figure 1 As shown, in some embodiments of the present application, the diaphragm tension testing system 100 further includes a plurality of reversing modules 170 disposed between the unwinding module 110 and the rewinding module 160 for tensioning the diaphragm and changing the running direction of the diaphragm.

[0060] The reversing module 170 includes a reversing roller 171 installed on a roller bracket, and the reversing roller 171 is used to carry the diaphragm.

[0061] The reversing module 170 can simulate the actual turning situation of the diaphragm feeding into the laminating machine, so that the diaphragm can move along the same path as the actual feeding situation, thereby improving the effectiveness of the diaphragm tension control.

[0062] like Figure 1 As shown, in some embodiments of the present application, the diaphragm tension testing system 100 further includes a speed acquisition module 180 , which is disposed between the unwinding module 110 and the winding module 160 and is used to detect the traveling speed of the diaphragm.

[0063] like Figure 3 As shown, the speed acquisition module 180 includes an encoder 181, a pressure roller 182 and a cylinder (not shown in the figure). The pressure roller 182 is used to tension the diaphragm, and the cylinder presses the diaphragm against the surface of the pressure roller 182. The diaphragm drives the pressure roller 182 to rotate synchronously during the movement. The encoder 181 detects the angular velocity of the pressure roller 182 to calculate the linear velocity of the pressure roller 182, thereby determining the actual travel speed of the diaphragm at the detection point.

[0064] There are multiple speed acquisition modules 180 to measure the speed of different positions of the diaphragm. For example, a speed acquisition module 180 can be configured for each module with a speed control function, and a speed acquisition module 180 can be respectively set at the unwinding module 110, the winding module 160, and the in-and-out diaphragm driving module 140, so that each module can feedback and adjust its own speed.

[0065] like Figure 1 As shown, in some embodiments of the present application, the diaphragm tension testing system 100 also includes an air control module 191 and a rack module 192. The air control module 191 is used to provide air circuit connection and control functions for the entire system, thereby controlling various cylinder actions; the rack module 192 includes a steel structure support frame, bolts, nuts, etc., which are used to support the above-mentioned modules.

[0066] like Figure 4 As shown, the diaphragm tension test system 100 further includes a control device 193. The control device 193 is electrically connected to each module, and is used to comprehensively control the operation of each module, and collect the control mode of the tension control module 130 for application in actual lamination operations.

[0067] The simulation principle of the diaphragm tension testing system 100 of the embodiment of the present application is as follows:

[0068] The unwinding module 110 unwinds the membrane, and the membrane passes through the tension collection module 120, the tension control module 130, the membrane buffer module 150, the membrane driving module 140, and another membrane buffer module 150 in sequence, and then enters the winding module 160, and passes through multiple reversing modules 170. The membrane driving module 140 drives the membrane to move at a corresponding preset speed, and the winding module 160 rewinds at a corresponding preset speed. The unwinding module 110 unwinds at a corresponding preset speed, and the tension collection module 120 collects the tension data of the membrane in real time. The tension control module 130 adjusts the tension of the membrane according to the collected tension data feedback, so that the tension data collected by the tension collection module 120 approaches the preset value or falls within the preset range. At the same time, the tension control process of the tension control module 130 is collected, and the optimal control method is obtained under the preset unwinding speed, winding speed and driving speed, so as to be applied to the actual stacking operation.

[0069] Among them, the unwinding module 110 simulates the process of feeding the diaphragm to the stacking machine, that is, the speed of the unwinding module 110 corresponds to the travel speed of the incoming side of the diaphragm; the diaphragm driving module 140 simulates the speed control process before the diaphragm enters the stacking machine, that is, the driving speed of the diaphragm driving module 140 corresponds to the travel speed of the diaphragm during the actual stacking operation; the winding module 160 simulates the diaphragm consumption process of the stacking process of the stacking machine, that is, the winding speed of the winding module 160 corresponds to the consumption speed of the diaphragm during the actual stacking operation; the arrangement path of multiple reversing modules 170 is the same as the actual diaphragm travel path, so as to simulate the travel and reversing path of the diaphragm in the actual operation.

[0070] The diaphragm tension testing system 100 of the embodiment of the present application is used to simulate the entire movement process of the diaphragm during the stacking operation, so that the best way to control the diaphragm tension can be obtained. Since only the movement process of the diaphragm is simulated, there is no need to start the real assembly line and no need to consume the pole pieces. The tension control data in the actual stacking operation process is obtained in a low-cost and high-efficiency manner, reducing the risk of diaphragm deformation damage and improving the stacking quality of the battery cell.

[0071] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0072] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A diaphragm tension testing system (100), characterized in that: include: An unwinding module (110) for unwinding a diaphragm; A winding module (160) for winding the diaphragm; A tension acquisition module (120) and a tension control module (130) are arranged between the unwinding module (110) and the winding module (160); In which, during the tape running process of the diaphragm, the tension acquisition module (120) is used to collect the tension of the diaphragm, and the tension control module (130) is used to adjust the tension of the diaphragm in real time according to the data collected by the tension acquisition module (120) to provide tension control data for the actual lamination operation.

2. The diaphragm tension testing system (100) according to claim 1, characterized in that: The tension control module (130) is arranged downstream of the tension acquisition module (120).

3. The diaphragm tension testing system (100) according to claim 1, characterized in that: The tension control module (130) comprises: A swing roller (132) for tensioning the diaphragm; The swing roller driving assembly (131) is used to drive the swing roller (132) to swing so as to adjust the tension of the diaphragm.

4. The diaphragm tension testing system (100) according to claim 1, characterized in that: The tension acquisition module (120) comprises: A collecting roller (121) for tensioning the diaphragm; A tension sensor (122) is installed at the end of the collecting roller (121) and is used to collect the tension of the diaphragm.

5. The diaphragm tension testing system (100) according to claim 1, characterized in that: Also includes: The diaphragm driving module (140) is arranged between the unwinding module (110) and the winding module (160), and is used to drive the diaphragm to move at a preset speed.

6. The diaphragm tension testing system (100) according to claim 5, characterized in that: The diaphragm driving module (140) comprises: A driving roller assembly (141), comprising a motor assembly (1411) and a driving roller (1412), wherein the motor assembly (1411) is used to drive the driving roller (1412) to rotate, and the driving roller (1412) is used to tension the diaphragm; A pressing member is used to press the diaphragm against the driving roller (1412).

7. The diaphragm tension testing system (100) according to claim 5, characterized in that: Also includes: A diaphragm buffer module (150) is arranged between the unwinding module (110) and the winding module (160) and is used for buffering the diaphragm.

8. The diaphragm tension testing system (100) according to claim 7, characterized in that: Two diaphragm buffer modules (150) are provided, and the two diaphragm buffer modules (150) are respectively provided upstream and downstream of the diaphragm driving module (140).

9. The diaphragm tension testing system (100) according to claim 1, characterized in that: Also includes: The speed acquisition module (180) is arranged between the unwinding module (110) and the winding module (160) and is used to detect the traveling speed of the diaphragm.

10. The diaphragm tension testing system (100) according to claim 1, characterized in that: Also includes: A plurality of reversing modules (170) are arranged between the unwinding module (110) and the rewinding module (160) and are used to tension the diaphragm and change the running direction of the diaphragm.

11. The diaphragm tension testing system (100) according to claim 1, characterized in that: The real-time tension of the diaphragm collected by the tension collection module (120) is Q, and the tension control module (130) is used to adjust the tension of the diaphragm in real time so that the tension Q of the diaphragm approaches a preset value Q0.

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