Sheet production line and battery preparation system

Abstract

The application discloses a sheet production line and a battery preparation system, and relates to the technical field of batteries.A sheet production line comprises a unwinding mechanism, a tension adjusting mechanism and a first conveying roller.The tension adjusting mechanism is used for unwinding a sheet, and the tension adjusting mechanism is used for adjusting the tension of the sheet.The first conveying roller is located between the unwinding mechanism and the tension adjusting mechanism in the conveying direction of the sheet, and is used for conveying the sheet.The first conveying roller comprises a first roller body and a first flexible layer, and the first flexible layer is sleeved on the first roller body.By arranging the first conveying roller upstream of the tension adjusting mechanism, the first flexible layer has a buffering characteristic, can reduce the tension fluctuation caused by the movement of the tension adjusting mechanism to a certain extent, releases stress concentration, and can reduce the risk of sheet wrinkling compared with a steel roller.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a sheet production line and a battery manufacturing system. Background Technology

[0002] Electrode production lines typically involve coating the surface of foil with an active material layer. With the rapid development of lithium-ion batteries and increasingly stringent cost requirements, the use of wide-width and multi-width foils is gradually increasing. Existing electrode production lines cannot guarantee that the coated sheets are at a stable level, resulting in foil wrinkling. Foil wrinkling can easily cause problems such as short circuits between the positive and negative electrodes, cell runaway, and reduced peel strength, seriously affecting battery product quality and economic efficiency. Utility Model Content

[0003] The embodiments of this application provide a sheet battery fabrication system to at least partially solve the above-mentioned technical problems.

[0004] In a first aspect, embodiments of this application provide a sheet production line, comprising: Unwinding mechanism, used for unwinding sheet materials; A tension adjustment mechanism is used to adjust the tension of the sheet. A first conveying roller is located between the unwinding mechanism and the tension adjusting mechanism in the conveying direction of the sheet, and is used to convey the sheet. The first conveying roller includes a first roller body and a first flexible layer, and the first flexible layer is sleeved on the first roller body.

[0005] In the above technical solution, by setting the first conveying roller upstream of the tension adjustment mechanism, the first flexible layer has buffering characteristics, which can reduce the tension fluctuation caused by the movement of the tension adjustment mechanism to a certain extent, release stress concentration, and reduce the risk of sheet wrinkling compared with steel roller.

[0006] In one possible implementation, the tension adjustment mechanism includes a swing roller configured to adjust the tension of the sheet.

[0007] In the above technical solution, the tension of the sheet can be adjusted by controlling the swing amplitude of the swing roller, which helps to reduce the difficulty of tension adjustment.

[0008] In one possible implementation, the sheet production line further includes: A tension detection mechanism is used to detect the tension of the sheet, and the swing roller is configured to adjust the swing amplitude according to the tension detected by the tension detection mechanism.

[0009] The above technical solutions help improve the accuracy of tension adjustment and ensure the consistency of sheet tension.

[0010] In one possible implementation, the first conveying roller is positioned between the tension detection mechanism and the tension adjustment mechanism in the conveying direction of the sheet.

[0011] In one possible implementation, the sheet production line further includes: The alignment mechanism is located downstream of the tension adjustment mechanism in the conveying direction of the sheet and is used to align the position of the sheet.

[0012] In the above technical solution, the correction mechanism can reduce the adverse effects on subsequent steps, such as the coating of the active material layer. In one possible implementation, the sheet production line further includes: The second conveying roller is located between the tension adjustment mechanism and the correction mechanism in the conveying direction of the sheet. The second conveying roller includes a second roller body and a second flexible layer, with the second flexible layer sleeved on the second roller body.

[0013] In the above technical solution, the correction mechanism for the position of the sheet can cause tension fluctuations in the sheet, which can easily lead to wrinkling. The second flexible layer of the second conveyor roller can alleviate the tension fluctuations caused by the correction mechanism, thereby reducing the risk of wrinkling of the sheet.

[0014] In one possible implementation, the sheet production line further includes: A traction mechanism, located downstream of the correction mechanism in the conveying direction of the sheet, is used to traction the sheet.

[0015] In the above technical solution, the traction mechanism is used to traction the sheet material.

[0016] In one possible implementation, the traction mechanism has a clamping gap for the sheet to pass through, and the sheet production line further includes: An adjustment mechanism is used to adjust the size of the clamping gap.

[0017] In the above technical solution, the adjustment mechanism is used to adjust the size of the clamping gap, so that the sheet is subjected to uniform force.

[0018] In one possible implementation, the traction mechanism includes a first clamping roller and a second clamping roller spaced apart, defining the clamping gap between the first clamping roller and the second clamping roller, and the adjustment mechanism includes a drive member configured to drive one of the first clamping roller and the second clamping roller to move to adjust the size of the clamping gap.

[0019] In the above technical solution, the difficulty of adjusting the clamping gap can be reduced by driving one of the first clamping rollers and the second clamping roller to move by a driving component.

[0020] In one possible implementation, the driving element is a cylinder, the cylinder having an output shaft that is drive-connected to the first clamping roller, and the adjusting mechanism further includes: The stroke adjustment component is configured to adjust the output stroke of the output shaft.

[0021] In the above technical solution, the cylinder has low adjustment accuracy. It can drive the first clamping roller to a position that matches the second clamping roller, but it cannot control the stroke of its output shaft more precisely, which is not conducive to the uniform force on the sheet. The adjustment component can fine-tune the output stroke of the output shaft, thereby more precisely adjusting the relative position of the first clamping roller and the second clamping roller, and thus adjusting the size of the clamping gap.

[0022] In one possible implementation, the adjusting mechanism further includes a connecting arm, one end of which is rotatably connected to the output shaft and the other end of which is rotatably connected to the first clamping roller.

[0023] In the above technical solution, the position of the first clamping roller can be adjusted by driving the connecting arm to move, thereby adjusting the clamping gap.

[0024] In one possible implementation, the stroke adjustment assembly includes an abutment and an adjustment member. The abutment abuts against the side of the connecting arm opposite to the output shaft along the axial direction of the output shaft. The adjustment member is drively connected to the abutment. The adjustment member indirectly drives the output shaft to move along the axial direction of the output shaft by driving the abutment to move.

[0025] In the above technical solution, the adjusting component indirectly controls the formation of the output shaft through the abutting component, which can reduce the difficulty of adjustment.

[0026] In one possible implementation, the abutment is a wedge, the inclined surface of which abuts against the connecting arm, and the adjusting member is threadedly connected to the abutment.

[0027] In the above technical solution, when the adjusting component is rotated, the rotational motion of the adjusting component is converted into the linear motion of the abutting component. The abutting component moves along the axial direction of the adjusting component. Since the inclined surface abuts against the connecting arm, the displacement of the inclined iron will force the output shaft to make a slight movement, thereby forcing the stroke of the output shaft to change slightly, so as to achieve the purpose of adjusting the clamping gap within a small range.

[0028] In one possible implementation, the connecting arm includes a body and a roller, one end of the body is rotatably connected to the output shaft and the other end is rotatably connected to the first clamping roller, the roller is rotatably disposed on the body, and the inclined surface of the wedge abuts against the roller.

[0029] In the above technical solution, the roller can change the friction between the wedge and the connecting arm into sliding friction, thereby reducing the adjustment resistance.

[0030] Secondly, embodiments of this application provide a battery manufacturing system, including the aforementioned sheet production line. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 Schematic diagrams of the sheet production line provided for some embodiments of this application; Figure 2 A schematic diagram of the structure of a first conveyor roller provided for some embodiments of this application; Figure 3 A partial structural schematic diagram of the correction mechanism provided for some embodiments of this application; Figure 4 A schematic diagram of the structure of the second conveyor roller provided for some embodiments of this application; Figure 5 Schematic diagrams of the traction mechanism and adjustment mechanism provided for some embodiments of this application; Figure 6 A schematic diagram of the sheet production line control process provided for some embodiments of this application; Explanation of reference numerals in the attached figures: 1000-Sheet Production Line; 10-Unwinding mechanism; 20 - Tension testing agency; 30 - First conveyor roller; 31 - First roller body; 32 - First flexible layer; 40 - Tension adjustment mechanism; 50 - Unwinding guide; 60 - Areal density testing agency; 70 - Dust removal mechanism; 80 - Second conveyor roller; 81 - Second roller body; 82 - Second flexible layer; 90 - Correction mechanism; 91 - Third conveyor roller; 92 - Fourth conveyor roller; 100-Adjusting mechanism; 11-Drive component; 12-Output shaft; 13-Stroke adjustment assembly; 131-Abutting component; Inclined surface; 132-Adjusting component; 14-Connecting arm; 141-Body; 142-Roller; 110 - Traction mechanism; 111 - First clamping roller; 112 - Second clamping roller; 120 - Coating mechanism; 130 - Centralized testing agency; 200-Sheet. Detailed Implementation

[0033] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0034] This application provides a battery manufacturing system, including a sheet production line 1000.

[0035] The sheet 200 can be used as foil for producing electrode sheets. At least one side of the sheet 200 in the thickness direction is coated with an active material layer, and the electrode sheet is formed through processes such as compaction and drying.

[0036] In some embodiments, the sheet 200 may be a wide foil or a multi-width foil.

[0037] In some embodiments, the electrode sheets are wound to form a wound electrode assembly.

[0038] Figure 1 A schematic diagram of the structure of a sheet production line 1000 provided for some embodiments of this application. Figure 2 A schematic diagram of the structure of the first conveying roller 30 provided for some embodiments of this application, with reference to Figure 1 and Figure 2 In some embodiments, the sheet production line 1000 includes an unwinding mechanism 10, a tension adjusting mechanism 40, and a first conveying roller 30. The unwinding mechanism 10 is used to unwind the sheet 200, the tension adjusting mechanism 40 is used to adjust the tension of the sheet 200, and the first conveying roller 30 is located between the unwinding mechanism 10 and the tension adjusting mechanism 40 in the conveying direction of the sheet 200 and is used to convey the sheet 200. The first conveying roller 30 includes a first roller body 31 and a first flexible layer 32, and the first flexible layer 32 is sleeved on the first roller body 31.

[0039] In related technologies, steel rollers are typically used to convey the electrode sheets, which can cause the sheets to wrinkle, especially when preparing wide or multi-width foils, where there is a risk of wrinkling.

[0040] In electrode production, sheet 200 is prone to deformation, and tension fluctuations can lead to problems such as coating wrinkles and slitting deviations. A tension adjustment mechanism 40 is installed to stabilize the tension of sheet 200 and prevent sudden increases or decreases in tension from causing foil breakage or loosening. However, the tension adjustment mechanism 40 has a large range of motion, which can easily cause tension fluctuations in sheet 200. Traditional steel rollers are unable to release stress, especially when preparing wide or multi-width foils, which can exacerbate the risk of wrinkling.

[0041] In this embodiment, by placing the first conveying roller 30 upstream of the tension adjustment mechanism 40, the first flexible layer 32 has buffering characteristics, which can reduce the tension fluctuations caused by the movement of the tension adjustment mechanism 40 to a certain extent and release stress concentration. Compared with steel rollers, it can reduce the risk of wrinkling of the sheet 200.

[0042] In some embodiments, the flexible layer is rubber or silicone.

[0043] In some embodiments, the tension adjustment mechanism 40 includes a swing roller configured to adjust the tension of the sheet 200 by swinging. Adjusting the tension of the sheet 200 by controlling the swing amplitude of the swing roller helps reduce the difficulty of tension adjustment.

[0044] Of course, in other embodiments, a floating roller can also be used to adjust the tension of the sheet 200.

[0045] In some embodiments, the sheet production line 1000 further includes a tension detection mechanism 20 for detecting the tension of the sheet 200, and the swing roller is configured to adjust its swing amplitude according to the tension detected by the tension detection mechanism 20. This configuration helps to improve the accuracy of tension adjustment and ensure the consistency of the tension of the sheet 200.

[0046] In some embodiments, the first conveying roller 30 is located between the tension detection mechanism 20 and the tension adjustment mechanism 40 in the conveying direction of the sheet 200. This arrangement allows the first conveying roller 30 to be closer to the tension adjustment mechanism 40 in the conveying path of the sheet 200, thus largely avoiding wrinkling caused by tension fluctuations in the sheet 200 due to the tension adjustment mechanism 40.

[0047] Figure 3 A partial structural schematic diagram of the correction mechanism 90 provided for some embodiments of this application, with reference to... Figure 3 In some embodiments, the sheet production line 1000 further includes a correction mechanism 90, located downstream of the tension adjustment mechanism 40 in the conveying direction of the sheet 200, for correcting the position of the sheet 200. The correction mechanism 90 can reduce the adverse effects on subsequent steps, such as the coating of the active material layer. Correction refers to bringing the sheet 200, which originally deviated from the preset central axis or reference path during conveying, back to the target position (i.e., within the preset central trajectory or the specified conveying path range), achieving stable and flat operation along a fixed reference, with positional deviation controlled within a very small range. In other words, the sheet 200 must not deviate from its designated position.

[0048] In some embodiments, the correction mechanism 90 is a CPC (Center Position Control) correction device, and its specific structure can be referred to the prior art.

[0049] In some embodiments, the web guiding mechanism 90 includes a third conveying roller 91 and a fourth conveying roller 92. At least one of the third conveying roller 91 and the fourth conveying roller 92 has a groove on its surface, which extends along the axial direction of the conveying roller. When conveying the electrode sheet, the groove can reduce the contact area between the conveying roller and the sheet 200, and expel compressed gas, thereby reducing the risk of wrinkling of the sheet 200.

[0050] Figure 4 A schematic diagram of the structure of the second conveyor roller 80 provided for some embodiments of this application is shown below. Figure 4 In some embodiments, the sheet production line 1000 further includes a second conveying roller 80, which is located between the tension adjustment mechanism 40 and the correction mechanism 90 in the conveying direction of the sheet 200. The second conveying roller 80 includes a second roller body 81 and a second flexible layer 82, which is sleeved on the second roller body 81.

[0051] It is understood that the second conveyor roller 80 operates on the same principle as the first conveyor roller 30. Since the correction mechanism 90 causes tension fluctuations in the sheet 200 when adjusting its position, which can easily lead to wrinkling, in this embodiment, the second flexible layer 82 of the second conveyor roller 80 can alleviate the tension fluctuations caused by the correction mechanism 90, thereby reducing the risk of wrinkling of the sheet 200.

[0052] Figure 5 Schematic diagrams of the traction mechanism 110 and the adjustment mechanism 100 provided for some embodiments of this application, with reference to Figure 5 The sheet production line 1000 also includes a traction mechanism 110, which is located downstream of the correction mechanism 90 in the conveying direction of the sheet 200 and is used to traction the sheet 200.

[0053] In some embodiments, the traction mechanism 110 has a clamping gap through which the sheet 200 passes, and the sheet production line 1000 further includes an adjustment mechanism 100 for adjusting the size of the clamping gap so that the sheet 200 is subjected to uniform force.

[0054] In some embodiments, two sets of traction mechanisms 110 may be provided, which are spaced apart along the width direction of the sheet 200 and jointly traction the sheet 200.

[0055] Since the thickness of sheet 200 may vary between different batches, the clamping gap can be adjusted by setting the adjustment mechanism 100 so that the traction mechanism 110 can pull sheet 200 with appropriate traction force.

[0056] Furthermore, due to limitations in the processing technology, the thickness of the two ends of the same roll of sheet 200 may be inconsistent in the width direction; for example, the thickness on the left side of the roll may be greater than that on the right side. To address this technical problem, the clamping gap of the traction mechanism 110 corresponding to the thicker side can be increased.

[0057] In some embodiments, the traction mechanism 110 includes a first clamping roller 111 and a second clamping roller 112 spaced apart, defining a clamping gap between the first clamping roller 111 and the second clamping roller 112. The adjustment mechanism 100 includes a drive member 11, which is configured to drive one of the first clamping roller 111 and the second clamping roller 112 to move to adjust the size of the clamping gap. This configuration reduces the difficulty of adjusting the clamping gap.

[0058] In some embodiments, the drive member 11 is a cylinder, which has an output shaft 12 that is throttle-connected to the first clamping roller 111. The adjustment mechanism 100 further includes a stroke adjustment component 13, configured to adjust the output stroke of the output shaft 12. It is understood that the adjustment precision of the cylinder is relatively low. It can drive the first clamping roller 111 to a position that matches the second clamping roller 112, but it cannot more precisely control the stroke of its output shaft 12, which is not conducive to the uniform force on the sheet 200. The adjustment component can fine-tune the output stroke of the output shaft 12, thereby more precisely adjusting the relative position of the first clamping roller 111 and the second clamping roller 112, and thus adjusting the size of the clamping gap.

[0059] In some embodiments, the adjusting mechanism 100 further includes a connecting arm 14, one end of which is rotatably connected to the output shaft 12, and the other end of which is rotatably connected to the first clamping roller 111. The position of the first clamping roller 111 can be adjusted by driving the output shaft 12 of the cylinder to move the connecting arm 14.

[0060] In some embodiments, the stroke adjustment assembly 13 includes an abutment 131 and an adjustment member 132. The abutment 131 abuts against the side of the connecting arm 14 opposite to the output shaft 12 along the axial direction of the output shaft 12. The adjustment member 132 is drively connected to the abutment 131, and the adjustment member 132 indirectly drives the output shaft 12 to move along the axial direction of the output shaft 12 by driving the abutment 131 to move. This configuration can reduce the difficulty of adjustment.

[0061] In some embodiments, the abutment 131 is a wedge, the inclined surface of which abuts against the connecting arm 14, and the adjusting member 132 and the abutment 131 are threadedly driven.

[0062] For example, the cylinder output shaft 12 extends horizontally, and the adjusting member 132 extends vertically. When the adjusting member 132 is rotated, the rotational motion of the adjusting member 132 is converted into the linear motion of the abutment member 131 in the vertical direction. The abutment member 131 moves axially along the adjusting member 132. Since the inclined surface abuts the connecting arm 14, the displacement of the inclined iron will force the output shaft 12 to move slightly in the horizontal direction, thereby forcing the stroke of the output shaft 12 to change slightly, so as to achieve the purpose of adjusting the clamping gap within a small range.

[0063] In some embodiments, the extension direction of the output shaft 12 is perpendicular to the extension direction of the adjustment member 132.

[0064] In some embodiments, the adjusting member 132 is a lead screw.

[0065] In some embodiments, the connecting arm 14 includes a body 141 and a roller 142. One end of the body 141 is rotatably connected to the output shaft 12, and the other end is rotatably connected to the first clamping roller 111. The roller 142 is rotatably disposed on the body 141, and the inclined surface of the wedge abuts against the roller 142. The roller 142 can change the friction between the wedge and the connecting arm 14 to sliding friction, reducing the adjustment resistance.

[0066] In some embodiments, the sheet production line 1000 further includes a coating mechanism 120, which is disposed downstream of the clamping mechanism and is used to coat the surface of the sheet 200 with an active material layer. After the sheet 200 is coated with the active material layer, its two sides are empty foil areas, which can serve as tabs.

[0067] In some embodiments, the sheet production line 1000 further includes a centering detection mechanism 130, which is located downstream of the coating mechanism 120 and is used to detect whether the sheet 200 is centered.

[0068] Specifically, the centering detection mechanism 130 may include a first image sensor and a second image sensor. The first image sensor is located on one side of the sheet 200 in the width direction, and the second image sensor is located on the other side of the sheet 200 in the width direction. The sheet 200 has opposing first and second edges along its width direction. The area near the first edge where no active material layer is coated is the first empty foil area, and the area near the second edge where no active material layer is coated is the second empty foil area. The first image sensor identifies the width of the first empty foil area, and the second image sensor identifies the width of the second empty foil area. By comparing the widths of the first and second empty foil areas, it can be determined that the sheet 200 is not centered. If the sheet 200 is detected to be out of center, the correction mechanism 90 can correct the sheet 200.

[0069] In some embodiments, the central detection mechanism 130 is a CCD (Charge-Coupled Device Detection) detection mechanism.

[0070] In some embodiments, the sheet production line 1000 further includes a surface density detection mechanism 60, which is located between the tension detection mechanism 20 and the correction mechanism 90 in the conveying direction of the sheet 200, and is used to detect whether the surface density of the sheet 200 is qualified.

[0071] In some embodiments, the sheet production line 1000 further includes an unwinding guide 50, which is located between the tension detection mechanism 20 and the areal density detection mechanism 60 in the conveying direction of the sheet 200, and is used to stabilize the initial position of the sheet 200 when it leaves the tension adjustment mechanism 40.

[0072] In some embodiments, the sheet production line 1000 further includes a dust removal mechanism 70, which is located between the areal density detection mechanism 60 and the second conveying roller 80 in the conveying direction of the sheet 200, for removing dust from the surface of the sheet 200 so that the coating mechanism 120 can coat the active material layer.

[0073] Reference Figure 6 , Figure 6 This application provides a schematic diagram of the control flow of a sheet production line 1000 for some embodiments of the present application. The embodiments of the present application provide a control flow for a sheet production line 1000: Users can operate on the control screen and input preset information into the PLC (Programmable Logic Controller), such as the initial position of sheet 200 and the start / stop information of each mechanism. The PLC is connected to the signals of each mechanism on the sheet production line 1000 and works collaboratively under the control of the PLC.

[0074] Specifically, after receiving the start signal, the PLC controls the unwinding mechanism 10 to release the sheet 200. The sheet 200 is conveyed along a preset path: the tension is stabilized by the tension detection and adjustment mechanism 100, the initial deviation is corrected by the unwinding guide 50, and the quality and cleanliness are ensured by the areal density detection and dust removal mechanism 70. Then, it is sent to the correction mechanism 90 by the second conveyor roller 80 to maintain the center conveying. After the speed is matched by the traction mechanism 110, it enters the coating mechanism 120. Finally, it is detected by the center detection mechanism 130. The PLC controls the upstream correction mechanism 90 to work based on the information detected by the center detection mechanism 130.

[0075] During the above process, the centering detection mechanism 130 continuously detects the offset of the sheet 200. If the offset is within the preset range, the PLC does not send a command to the correction mechanism 90. If the offset exceeds the preset range, the PLC sends a correction value to the correction mechanism 90 according to the offset. The correction mechanism 90 performs a correction action according to the correction value to keep the sheet 200 centered.

[0076] In the description of this application, 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. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0077] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0078] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0079] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A sheet production line (1000), characterized in that, include: An unwinding mechanism (10) is used to unwind sheet material (200); Tension adjustment mechanism (40) for adjusting the tension of the sheet (200), The first conveying roller (30) is located between the unwinding mechanism (10) and the tension adjusting mechanism (40) in the conveying direction of the sheet (200) and is used to convey the sheet (200). The first conveying roller (30) includes a first roller body (31) and a first flexible layer (32), and the first flexible layer (32) is sleeved on the first roller body (31).

2. The sheet production line (1000) according to claim 1, characterized in that, The tension adjustment mechanism (40) includes a swing roller configured to adjust the tension of the sheet (200).

3. The sheet production line (1000) according to claim 2, characterized in that, The sheet production line (1000) also includes: Tension detection mechanism (20) is used to detect the tension of the sheet (200), and the swing roller is configured to adjust the swing amplitude according to the tension detected by the tension detection mechanism (20).

4. The sheet production line (1000) according to claim 3, characterized in that, The first conveying roller (30) is located between the tension detection mechanism (20) and the tension adjustment mechanism (40) in the conveying direction of the sheet (200).

5. The sheet production line (1000) according to claim 1, characterized in that, The sheet production line (1000) also includes: The correction mechanism (90) is located downstream of the tension adjustment mechanism (40) in the conveying direction of the sheet (200) and is used to correct the position of the sheet (200).

6. The sheet production line (1000) according to claim 5, characterized in that, The sheet production line (1000) also includes: The second conveying roller (80) is located between the tension adjustment mechanism (40) and the correction mechanism (90) in the conveying direction of the sheet (200). The second conveying roller (80) includes a second roller body (81) and a second flexible layer (82), with the second flexible layer (82) sleeved on the second roller body (81).

7. The sheet production line (1000) according to claim 5, characterized in that, The sheet production line (1000) also includes: The traction mechanism (110) is located downstream of the correction mechanism (90) in the conveying direction of the sheet (200) and is used to traction the sheet (200).

8. The sheet production line (1000) according to claim 7, characterized in that, The traction mechanism (110) has a clamping gap for the sheet (200) to pass through, and the sheet production line (1000) further includes: An adjustment mechanism (100) is used to adjust the size of the clamping gap.

9. The sheet production line (1000) according to claim 8, characterized in that, The traction mechanism (110) includes a first clamping roller (111) and a second clamping roller (112) spaced apart, defining the clamping gap between the first clamping roller (111) and the second clamping roller (112). The adjustment mechanism (100) includes a drive member (11) configured to drive one of the first clamping roller (111) and the second clamping roller (112) to move to adjust the size of the clamping gap.

10. The sheet production line (1000) according to claim 9, characterized in that, The driving component (11) is a cylinder, which has an output shaft (12) that is drively connected to the first clamping roller (111). The adjusting mechanism (100) further includes: The stroke adjustment component (13) is configured to adjust the output stroke of the output shaft (12).

11. The sheet production line (1000) according to claim 10, characterized in that, The adjustment mechanism (100) further includes a connecting arm (14), one end of which is rotatably connected to the output shaft (12), and the other end is rotatably connected to the first clamping roller (111).

12. The sheet production line (1000) according to claim 11, characterized in that, The stroke adjustment assembly (13) includes an abutment (131) and an adjustment member (132). The abutment (131) abuts against the side of the connecting arm (14) away from the output shaft (12) along the axial direction of the output shaft (12). The adjustment member (132) is connected to the abutment (131) in a transmission manner. The adjustment member (132) indirectly drives the output shaft (12) to move along the axial direction of the output shaft (12) by driving the abutment (131) to move.

13. The sheet production line (1000) according to claim 12, characterized in that, The abutment (131) is a wedge, the inclined surface of which abuts against the connecting arm (14), and the adjusting member (132) is threadedly driven with the abutment (131).

14. The sheet production line (1000) according to claim 13, characterized in that, The connecting arm (14) includes a body (141) and a roller (142). One end of the body (141) is rotatably connected to the output shaft (12), and the other end is rotatably connected to the first clamping roller (111). The roller (142) is rotatably disposed on the body (141), and the inclined surface of the wedge abuts against the roller (142).

15. A battery fabrication system, characterized in that, Includes the sheet production line (1000) as described in any one of claims 1-14.

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