Tension control mechanism for battery cell separator

Abstract

The application discloses a kind of tension control mechanism of battery cell diaphragm, including diaphragm unwinding assembly, transition roller assembly, tension control assembly, diaphragm swing assembly and diaphragm swing follow-up assembly, diaphragm unwinding assembly is used to place diaphragm roll, and provide extension power;Transition roller assembly is used to guide diaphragm;Tension control assembly is arranged between diaphragm unwinding assembly and transition roller assembly, and control diaphragm keeps stable tension;Diaphragm swing assembly is relative transition roller assembly and can reciprocate between first position and second position, so as to place diaphragm;Diaphragm swing follow-up assembly is arranged between transition roller assembly and diaphragm swing assembly, diaphragm swing follow-up assembly moves following diaphragm swing assembly when diaphragm swing assembly reaches third position, so as to reach first position or second position simultaneously with diaphragm swing assembly;Therefore, not only can reduce the space occupied, but also prevent damage to battery cell while protecting diaphragm.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing technology, and in particular to a tension control mechanism for a battery cell separator. Background Technology

[0002] In related technologies, during the cell production process, positive and negative electrode sheets are alternately stacked. The separator is fed in a Z-shaped manner to isolate the positive and negative electrode sheets. The separator feeding mechanism and the stacking table have relative displacement, and the distance between the separator feeding point and the stacking table will vary from large to small. If the separator tension is not controlled, it will cause the separator to wrinkle. Existing tension control mechanisms require the addition of a movable stacking table because the separator swing component is fixed, resulting in a large space occupation. Moreover, the speed of separator tension control cannot keep up with the stacking speed, causing the separator stacked on the electrode sheets to be uneven, which affects the quality of the cell. Summary of the Invention

[0003] The present invention aims to at least partially solve one of the technical problems in the aforementioned technologies. To this end, one objective of the present invention is to provide a tension control mechanism for a battery cell separator. By configuring the separator swing assembly as a movable structure and adding a separator swing follower assembly to avoid changes in separator tension during the initiation of the membrane translation operation, this not only reduces the space occupied but also protects the separator while preventing damage to the battery cell. In other words, it ensures stable separator tension during separator swing, thereby guaranteeing battery cell quality.

[0004] To achieve the above objectives, the present invention provides a tension control mechanism for a battery cell separator, comprising: a separator unwinding assembly for placing a separator roll and providing extension power for unwinding the separator roll; a transition roller assembly for guiding the separator unwound by the separator unwinding assembly; a tension control assembly disposed between the separator unwinding assembly and the transition roller assembly, controlling the separator to maintain a stable tension; a separator oscillation assembly disposed relative to the transition roller assembly and capable of reciprocating between a first position and a second position for placing the separator; and a separator oscillation following assembly disposed between the transition roller assembly and the separator oscillation assembly, wherein the separator oscillation following assembly moves along with the separator oscillation assembly when the separator oscillation assembly reaches a third position, so as to reach the first position or the second position simultaneously with the separator oscillation assembly, wherein the third position is located between the first position and the second position.

[0005] The tension control mechanism for a battery cell separator according to the present invention includes a separator unwinding assembly, a transition roller assembly, a tension control assembly, a separator oscillation assembly, and a separator oscillation following assembly. The separator unwinding assembly is used to place the separator roll and provide extension power for the unwinding. The transition roller assembly guides the separator unwound by the separator unwinding assembly. The tension control assembly is disposed between the separator unwinding assembly and the transition roller assembly and controls the separator to maintain a stable tension. The separator oscillation assembly is disposed relative to the transition roller assembly and can reciprocate between a first position and a second position to adjust the separator's tension. The diaphragm swing follower assembly is positioned between the transition roller assembly and the diaphragm swing assembly. When the diaphragm swing assembly reaches the third position, the diaphragm swing follower assembly moves with the diaphragm swing assembly so as to reach the first position or the second position simultaneously with the diaphragm swing assembly. The third position is located between the first position and the second position. Thus, by making the diaphragm swing assembly a movable structure and adding the diaphragm swing follower assembly to avoid changes in diaphragm tension during the start of the coating translation operation, not only is the space occupied reduced, but the diaphragm is also protected while preventing damage to the battery cell.

[0006] In addition, the tension control mechanism for the battery cell separator proposed above according to the present invention may also have the following additional technical features:

[0007] Optionally, the third position is located at the midpoint between the first position and the second position, and when the diaphragm swing assembly reaches the third position, the diaphragm swing assembly is longitudinally aligned with the transition roller assembly.

[0008] Optionally, after the diaphragm swing assembly moves from the first position to the third position, the diaphragm swing follow assembly starts moving from the first position and arrives at the second position simultaneously with the diaphragm swing assembly.

[0009] Optionally, the diaphragm unwinding assembly includes an unwinding shaft and a first driving member. The diaphragm roll is placed on the unwinding shaft, the first driving member is fixed to a vertical plate, and the unwinding shaft is fixed to the output end of the first driving member, so as to provide unwinding extension power by driving the diaphragm roll through the first driving member.

[0010] Optionally, it also includes a diaphragm rewinding assembly for receiving the diaphragm unwound by the diaphragm unwinding assembly.

[0011] Optionally, the tension control assembly includes a storage assembly and a tension swing arm assembly. The diaphragm on the diaphragm roll passes sequentially through the storage assembly and the tension swing arm assembly. The storage assembly stores the diaphragm to accommodate the rhythm difference between the diaphragm unwinding assembly and the diaphragm swinging assembly. The tension swing arm assembly provides tension control to maintain a stable tension on the diaphragm.

[0012] Optionally, the storage assembly includes a first movable roller, a first fixed roller, a slider, and a guide rail. The first fixed roller is disposed between the first movable roller and the diaphragm material exchange assembly, and the highest point of the first movable roller coincides with the highest point of the diaphragm material exchange assembly. The lowest point of the first movable roller coincides with the highest point of the first fixed roller, so that the diaphragm passes through the first movable roller and the first fixed roller in sequence. The first movable roller slides on the guide rail via the slider to move away from or towards the first fixed roller in order to store the diaphragm.

[0013] Optionally, the tension swing arm assembly includes a second drive member, a pressure regulating valve, an encoder, a second fixed roller, a third fixed roller, and a second movable roller. The second fixed roller is connected to the second movable roller, and the third fixed roller is disposed opposite to the second fixed roller and the second movable roller, so that the diaphragm passes sequentially through the second fixed roller, the third fixed roller, and the second movable roller. The encoder controls the driving speed of the second drive member, so that the second drive member drives the second movable roller to swing relative to the second fixed roller according to the pressure controlled by the pressure regulating valve, so as to ensure the diaphragm tension.

[0014] Optionally, the diaphragm swing following assembly includes a first sensor, a first controller, a sliding plate, and a first slide rail. The sliding plate has a through hole through which the diaphragm passes. The sliding plate reciprocates on the first slide rail through the cooperation of the first controller and the first sensor. The diaphragm swing assembly includes a second sensor, a second controller, a second slide rail, and a clamping roller. The diaphragm passes through the through hole and enters the clamping roller. The clamping roller reciprocates on the second slide rail through the cooperation of the second controller and the second sensor.

[0015] Optionally, it also includes a correction detection element and a diaphragm overall correction assembly. When the correction detection element detects the diaphragm offset, it sends the offset result to the diaphragm overall correction assembly so that the diaphragm overall correction assembly can correct the offset of the diaphragm. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the tension control mechanism for the battery cell separator according to an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the tension control mechanism of the battery cell separator according to an embodiment of the present invention from another perspective.

[0018] Figure 3 This is a schematic diagram of the tension control mechanism of the battery cell separator according to an embodiment of the present invention from another perspective.

[0019] Figure 4 This is a schematic diagram of the structure of a diaphragm swing-following assembly according to an embodiment of the present invention.

[0020] Explanation of reference numerals in the attached figures:

[0021] Diaphragm unwinding assembly 1, unwinding shaft 11, diaphragm roll 12;

[0022] Transition roller assembly 2;

[0023] Tension control assembly 3, material storage assembly 31, tension swing arm assembly 32, first movable roller 311, first fixed roller 312, guide rail 313, second fixed roller 321, third fixed roller 322, second movable roller 323;

[0024] Diaphragm swing assembly 4, second slide rail 41, clamping roller 42;

[0025] Diaphragm swing follower assembly 5, sliding plate 51, first slide rail 52, through hole 511;

[0026] Diaphragm feeding assembly 6;

[0027] Correction inspection item 7;

[0028] 8. Diaphragm overall alignment component. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] To better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the invention to those skilled in the art.

[0031] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.

[0032] like Figure 1-4 As shown, the tension control mechanism for the battery cell separator proposed in this embodiment of the invention includes a separator unwinding assembly 1, a transition roller assembly 2, a tension control assembly 3, a separator swing assembly 4, and a separator swing following assembly 5.

[0033] The diaphragm unwinding assembly 1 is used to place the diaphragm roll and provide the unwinding extension power for the diaphragm roll.

[0034] As one embodiment, the diaphragm unwinding assembly 1 includes an unwinding shaft 11 and a first drive member. The diaphragm roll 12 is placed on the unwinding shaft 11, the first drive member is fixed on the upright plate, and the unwinding shaft 11 is fixed to the output end of the first drive member so as to provide the unwinding extension power by driving the diaphragm roll 12 through the first drive member.

[0035] That is, a diaphragm roll 12 is placed on the unwinding shaft 11, and the unwinding shaft 11 is driven to rotate by a first driving member, such as a motor, so as to provide power according to the rotation speed to unwind the diaphragm on the diaphragm roll 12.

[0036] The transition roller assembly 2 is used to guide the diaphragm unwound by the diaphragm unwinding assembly.

[0037] In other words, after the diaphragm roll 12 is released from the diaphragm unwinding assembly 1, it is wound and transitioned between multiple transition rollers in the transition roller assembly 2.

[0038] The tension control component 3 is located between the diaphragm unwinding component 1 and the transition roller component 2, and controls the diaphragm to maintain a stable tension.

[0039] It should be noted that the tension control mechanism of the cell separator also includes a separator material exchange assembly 6, which is used to receive the separator unwound by the separator unwinding assembly 1.

[0040] In other words, when the diaphragm material is used up and needs to be replaced, a quick switching function can be provided through the diaphragm material replacement assembly 6.

[0041] As one embodiment, the tension control assembly 3 includes a storage assembly 31 and a tension swing arm assembly 32. The diaphragm on the diaphragm roll 12 passes sequentially through the storage assembly 31 and the tension swing arm assembly 32. The storage assembly 31 is used to store the diaphragm to accommodate the rhythm difference between the diaphragm unwinding assembly 1 and the diaphragm swinging assembly 4. The tension swing arm assembly 32 is used to provide tension control so that the diaphragm maintains a stable tension.

[0042] In one specific embodiment, the storage assembly 31 includes a first movable roller 311, a first fixed roller 312, a slider, and a guide rail 313. The first fixed roller 312 is disposed between the first movable roller 311 and the diaphragm material exchange assembly 6, and the highest point of the first movable roller 311 coincides with the highest point of the diaphragm material exchange assembly 6, and the lowest point of the first movable roller 311 coincides with the highest point of the first fixed roller 312, so that the diaphragm passes through the first movable roller 311 and the first fixed roller 312 in sequence. The first movable roller 311 slides on the guide rail 313 via the slider, so as to move away from or closer to the first fixed roller 312, so as to store the diaphragm.

[0043] It should be noted that, since the speed of the tension swing arm assembly 32 during swing is different from that of the diaphragm unwinding assembly 1, and the tension swing arm assembly 32 pauses at the first position A and the second position B to wait for the next electrode sheet to be stacked, it is necessary to store material through the storage assembly 31 to avoid the excess diaphragm unwound by the diaphragm unwinding assembly 1 affecting the tension, thereby causing fine lines or wrinkles. Specifically, material is stored when the first movable roller 311 moves away from the first fixed roller 312, and material is unwound when the first movable roller 311 moves closer to the first fixed roller 312.

[0044] As a specific embodiment, the tension swing arm assembly 32 includes a second drive member, a pressure regulating valve, an encoder, a second fixed roller 321, a third fixed roller 322, and a second movable roller 323. The second fixed roller 321 is connected to the second movable roller 323, and the third fixed roller 322 is arranged opposite to the second fixed roller 321 and the second movable roller 323 so that the diaphragm passes through the second fixed roller 321, the third fixed roller 322, and the second movable roller 323 in sequence. The encoder controls the driving speed of the second drive member so that the second drive member drives the second movable roller 323 to swing relative to the second fixed roller 321 according to the pressure controlled by the pressure regulating valve, so as to ensure the tension of the diaphragm.

[0045] In other words, the tension swing arm assembly 32 drives the second movable roller 323 to swing relative to the second fixed roller 321 according to the pressure controlled by the pressure regulating valve to adjust the tension. The second driving component is a cylinder, that is, the tension is precisely controlled by the cylinder and the precision pressure regulating valve, and the encoder is used for feedback to ensure the diaphragm tension.

[0046] The diaphragm swing assembly 4 is positioned relative to the transition roller assembly 2 and can reciprocate between the first position A and the second position B to place the diaphragm, thereby making the diaphragm tension adjustment visible, providing a basis for tension adjustment, and feeding back data.

[0047] As one embodiment, the diaphragm swing assembly 4 includes a second sensor, a second controller, a second slide rail 41, and a clamping roller 42. The diaphragm passes through the through hole 511 and enters the clamping roller 42. The clamping roller 42 reciprocates on the second slide rail 41 in cooperation with the second controller and the second sensor.

[0048] In other words, the second controller controls the clamping roller 42 to move the diaphragm on the second slide rail 41, while simultaneously winding the diaphragm out and placing it. The second sensor detects the position of the clamping roller 42 and causes it to reciprocate to a set position. The diaphragm swinging follower component 5 is positioned between the transition roller assembly 2 and the diaphragm swinging assembly 4. The diaphragm swinging follower component 5 moves with the diaphragm swinging assembly 4 when the diaphragm swinging assembly 4 reaches the third position C, so that it simultaneously reaches the first position A or the second position B with the diaphragm swinging assembly 4. The third position C is located between the first position A and the second position B.

[0049] In other words, when the diaphragm swing assembly 4 is reciprocating to place the diaphragm, assuming the first position A is the starting position, after the diaphragm swing assembly 4 moves from the first position A to the third position C, the diaphragm swing follower assembly 5 starts moving from the first position A and arrives at the second position B at the same time as the diaphragm swing assembly 4 to complete the diaphragm placement of the electrode. When a new electrode is placed on the diaphragm, after the diaphragm swing assembly 4 moves from the second position A to the third position C, the diaphragm swing follower assembly 5 starts moving from the second position A and arrives at the first position B at the same time as the diaphragm swing assembly 4 to complete the diaphragm placement of the electrode. This process is repeated to isolate the stacking of electrode sheets.

[0050] As one embodiment, the diaphragm swing following assembly 5 includes a first sensor, a first controller, a sliding plate 51 and a first slide rail 52. The sliding plate 51 is provided with a through hole 511, through which the diaphragm passes. The sliding plate 51 moves back and forth on the first slide rail 52 through the cooperation of the first controller and the first sensor.

[0051] As an example, the third position C is located at the midpoint between the first position A and the second position B. When the diaphragm swing assembly 4 reaches the third position C, the diaphragm swing assembly 4 is longitudinally aligned with the transition roller assembly 2.

[0052] As an example, after the diaphragm swing assembly 4 moves from the first position A to the third position C, the diaphragm swing follow assembly 5 starts to move from the first position A and arrives at the second position B at the same time as the diaphragm swing assembly 4.

[0053] It should be noted that, by cooperating with the diaphragm swing follower component 5, the diaphragm swing component 4 is started after the diaphragm swing component 4 is longitudinally aligned with the transition roller component 2, and the diaphragm swing follower component 5 reaches the set endpoint at the same time. This action can avoid the change in diaphragm tension caused when the diaphragm swing component 4 moves horizontally to start, and protect the diaphragm while preventing damage to the battery cell.

[0054] As one embodiment, the tension control mechanism of the cell separator also includes a correction detection element and a separator overall correction assembly. When the correction detection element detects a separator offset, it sends the offset result to the separator overall correction assembly so that the separator overall correction assembly can correct the separator offset.

[0055] In other words, the tail end of the diaphragm is also equipped with a correction detection component 7, namely a correction U-shaped detection photoelectric sensor, which feeds back to the overall diaphragm correction assembly 8 for correction to prevent the diaphragm from shifting.

[0056] In summary, the tension control mechanism for the battery cell separator proposed according to the present invention includes a separator unwinding assembly, a transition roller assembly, a tension control assembly, a separator oscillation assembly, and a separator oscillation following assembly. The separator unwinding assembly is used to place the separator roll and provide the unwinding extension power to the separator roll; the transition roller assembly is used to guide the separator unwound by the separator unwinding assembly; the tension control assembly is disposed between the separator unwinding assembly and the transition roller assembly and controls the separator to maintain a stable tension; the separator oscillation assembly is disposed relative to the transition roller assembly and can reciprocate between a first position and a second position to control the tension of the separator. The diaphragm is placed; the diaphragm swing follower assembly is set between the transition roller assembly and the diaphragm swing assembly. The diaphragm swing follower assembly moves with the diaphragm swing assembly when the diaphragm swing assembly reaches the third position, so as to reach the first position or the second position at the same time as the diaphragm swing assembly. The third position is located between the first position and the second position. Thus, by setting the diaphragm swing assembly as a movable structure and adding the diaphragm swing follower assembly to avoid the change in diaphragm tension when the coating translation operation is started, not only is the space occupied reduced, but the diaphragm is also protected while preventing damage to the battery cell.

[0057] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0058] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0059] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0061] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0062] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tension control mechanism for a battery cell separator, characterized in that, include: A diaphragm unwinding assembly, which is used to place a diaphragm roll and provide extension power for unwinding the diaphragm roll; A transition roller assembly for guiding the diaphragm unwound by the diaphragm unwinding assembly; A tension control assembly is disposed between the diaphragm unwinding assembly and the transition roller assembly, and controls the diaphragm to maintain a stable tension; A diaphragm oscillation assembly is disposed relative to the transition roller assembly and is capable of reciprocating between a first position and a second position in order to place the diaphragm. A diaphragm swing following assembly is disposed between the transition roller assembly and the diaphragm swing assembly. The diaphragm swing following assembly moves with the diaphragm swing assembly when the diaphragm swing assembly reaches a third position, so as to reach the first position or the second position simultaneously with the diaphragm swing assembly, wherein the third position is located between the first position and the second position.

2. The tension control mechanism for the battery cell separator as described in claim 1, characterized in that, The third position is located at the midpoint between the first position and the second position. When the diaphragm swing assembly reaches the third position, the diaphragm swing assembly is longitudinally aligned with the transition roller assembly.

3. The tension control mechanism for the battery cell separator as described in claim 2, characterized in that, After the diaphragm swing assembly moves from the first position to the third position, the diaphragm swing follow assembly starts moving from the first position and arrives at the second position simultaneously with the diaphragm swing assembly.

4. The tension control mechanism for the cell separator as described in claim 1, characterized in that, The diaphragm unwinding assembly includes an unwinding shaft and a first driving member. The diaphragm roll is placed on the unwinding shaft, the first driving member is fixed to a vertical plate, and the unwinding shaft is fixed to the output end of the first driving member so that the diaphragm roll is driven by the first driving member to provide unwinding extension power.

5. The tension control mechanism for the cell separator as described in claim 1, characterized in that, It also includes a diaphragm rewinding assembly, which is used to receive the diaphragm unwound by the diaphragm unwinding assembly.

6. The tension control mechanism for the cell separator as described in claim 5, characterized in that, The tension control assembly includes a storage assembly and a tension swing arm assembly. The diaphragm on the diaphragm roll passes sequentially through the storage assembly and the tension swing arm assembly. The storage assembly stores the diaphragm to accommodate the rhythm difference between the diaphragm unwinding assembly and the diaphragm swinging assembly. The tension swing arm assembly provides tension control to maintain a stable tension on the diaphragm.

7. The tension control mechanism for the cell separator as described in claim 6, characterized in that, The material storage assembly includes a first movable roller, a first fixed roller, a slider, and a guide rail. The first fixed roller is disposed between the first movable roller and the diaphragm material exchange assembly, and the highest point of the first movable roller coincides with the highest point of the diaphragm material exchange assembly, while the lowest point of the first movable roller coincides with the highest point of the first fixed roller, so that the diaphragm passes sequentially through the first movable roller and the first fixed roller. The first movable roller slides on the guide rail via the slider to move away from or towards the first fixed roller in order to store the diaphragm.

8. The tension control mechanism for the cell separator as described in claim 6, characterized in that, The tension swing arm assembly includes a second drive element, a pressure regulating valve, an encoder, a second fixed roller, a third fixed roller, and a second movable roller. The second fixed roller is connected to the second movable roller, and the third fixed roller is arranged opposite to the second fixed roller and the second movable roller, so that the diaphragm passes through the second fixed roller, the third fixed roller, and the second movable roller in sequence. The encoder controls the driving speed of the second drive element, so that the second drive element drives the second movable roller to swing relative to the second fixed roller according to the pressure controlled by the pressure regulating valve, so as to ensure the tension of the diaphragm.

9. The tension control mechanism for the cell separator as described in claim 3, characterized in that, The diaphragm swing following assembly includes a first sensor, a first controller, a sliding plate, and a first slide rail. The sliding plate has a through hole through which the diaphragm passes. The sliding plate reciprocates on the first slide rail through the cooperation of the first controller and the first sensor. The diaphragm swing assembly includes a second sensor, a second controller, a second slide rail, and a clamping roller. The diaphragm passes through the through hole and enters the clamping roller. The clamping roller reciprocates on the second slide rail through the cooperation of the second controller and the second sensor.

10. The tension control mechanism for the cell separator as described in claim 1, characterized in that, It also includes a correction detection device and a diaphragm overall correction assembly. When the correction detection device detects the diaphragm offset, it sends the offset result to the diaphragm overall correction assembly so that the diaphragm overall correction assembly can correct the offset of the diaphragm.

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