Winding device and rolling equipment

Abstract

The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a winding device and rolling equipment, the winding device comprises a winding mechanism used for pulling a pole piece to walk and winding the pole piece; the unwinding mechanism is used for arranging a traction material; the tape splicing mechanism is arranged between the unwinding mechanism and the winding mechanism along the traction direction of the pole piece; when the cut-off end of the working pole piece, the end part of the standby pole piece and the traction material are all positioned on the tape connecting mechanism, the tape connecting mechanism is used for connecting the traction material between the cut-off end of the working pole piece and the end part of the standby pole piece; the position of the unwinding mechanism is effectively changed, and the roll changing mechanism is arranged in front of the belt connecting mechanism and behind the weight measuring device, so that the traction material is effectively prevented from being broken due to the force applied by the rollers when passing through the plurality of rollers.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a winding device and a rolling device. Background Art

[0002] As a new type of secondary battery, lithium-ion batteries have the advantages of high energy density and power density, high operating voltage, light weight, small size, long cycle life, good safety, and green environmental protection. They have broad application prospects in portable appliances, power tools, large-scale energy storage, electric transportation power supply, etc.

[0003] During the rolling process of battery electrodes, lower-cost traction materials are often selected to reduce scrap during roll changes. However, during the unwinding and rewinding process, the battery electrodes undergo multiple tests and weight checks. During this process, the forces exerted by the rollers on the traction material can cause it to break. Utility Model Content

[0004] The purpose of the utility model is to provide a winding device and a rolling device to address the deficiencies of the existing technology, thereby solving the technical problem in the existing technology that the traction material may be broken due to the force applied by the roller when passing through multiple mechanisms from unwinding to rewinding.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In the first aspect, the utility model provides a winding device, comprising: a winding mechanism for pulling the pole piece and winding the pole piece; an unwinding mechanism for setting the traction material; a splicing mechanism, which is arranged between the unwinding mechanism and the winding mechanism along the traction direction of the pole piece; when the cut end of the working pole piece, the end of the spare pole piece and the traction material are all located in the splicing mechanism, the splicing mechanism is used to connect the traction material between the cut end of the working pole piece and the end of the spare pole piece.

[0007] Preferably, the unwinding mechanism includes an unwinding base and an unwinding roller, the unwinding roller is rotatably arranged on the base, and the unwinding roller is used to set the traction material, the winding mechanism includes a winding base, a winding roller and a drive assembly, the winding roller is rotatably arranged on the winding base, the winding roller is used to pull the pole piece and wind up the pole piece, and the output shaft of the drive assembly is connected to the winding roller.

[0008] Preferably, it also includes a tension control system, which includes a controller and a tension sensor. The tension sensor is arranged on the unwinding roller and / or the winding roller, and the controller is electrically connected to the tension sensor and the drive assembly.

[0009] Preferably, the unwinding tension of the unwinding mechanism is 10-150N.

[0010] Preferably, the diameter of the traction material is greater than 280 mm.

[0011] Preferably, it further comprises a first conveying mechanism and a second conveying mechanism. Along the pulling direction of the pole piece, the first conveying mechanism is arranged between the unwinding mechanism and the tape connecting mechanism, and the second conveying mechanism is arranged between the tape connecting mechanism and the winding mechanism.

[0012] Preferably, the first conveying mechanism includes a first conveying roller and a second conveying roller. Along the traction direction of the pole piece, the first conveying roller and the second conveying roller are sequentially arranged between the unwinding mechanism and the belt connecting mechanism. The first conveying roller and the second conveying roller are used to convey the traction material from the unwinding mechanism to the belt connecting mechanism.

[0013] Preferably, the second conveying mechanism includes a third conveying roller and a fourth conveying roller. Along the traction direction of the pole piece, the third conveying roller and the fourth conveying roller are sequentially arranged between the belt connecting mechanism and the winding device, and the pole piece is configured to pass between the third conveying roller and the fourth conveying roller.

[0014] Preferably, it also includes a frame, and the winding mechanism, the unwinding mechanism and the belt splicing mechanism are all arranged on the frame, the winding mechanism is arranged at one end of the frame, the unwinding mechanism and the belt splicing mechanism are both arranged at the other end of the frame, and the belt splicing mechanism is located above the unwinding mechanism.

[0015] In the second aspect, the utility model provides a rolling device, including a unwinding device, a rolling device, a testing device, a weighing device and the winding device of the above embodiment. Along the pulling direction of the pole piece, the unwinding device, the testing device, the weighing device and the winding device are arranged in sequence.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] The winding device of the utility model cooperates with the winding mechanism, the unwinding mechanism and the tape splicing mechanism. Along the traction direction of the pole piece, the tape splicing mechanism is arranged between the unwinding mechanism and the winding mechanism, effectively changing the position of the unwinding mechanism, and arranging the roll changing mechanism before the tape splicing mechanism and after the weighing device, effectively avoiding the traction material from being broken by the force exerted by the rollers when passing through multiple rollers.

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

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0020] Figure 1 It is a structural schematic diagram of the winding device of the present utility model.

[0021] The description of the accompanying drawings is as follows:

[0022] 100. Winding device;

[0023] 10. Winding mechanism; 11. Winding base; 12. Winding roller;

[0024] 20. Unwinding mechanism; 21. Unwinding base; 22. Unwinding roller;

[0025] 30. Belt connecting mechanism;

[0026] 40. First conveying mechanism; 41. First conveying roller; 42. Second conveying roller;

[0027] 50. Second conveying mechanism; 51. Third conveying roller; 52. Fourth conveying roller;

[0028] 60. Rack;

[0029] 200, pole piece;

[0030] 300. Traction materials. DETAILED DESCRIPTION

[0031] For example, certain words are used in the specification and claims to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. This specification and claims do not use differences in names as a way to distinguish components, but use differences in the functions of the components as the criteria for distinction. For example, "including" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". "Approximately" means that within an acceptable error range, those skilled in the art can solve technical problems within a certain error range and basically achieve technical effects.

[0032] Furthermore, the terms “first,” “second,” etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance.

[0033] In this utility model, unless otherwise expressly specified or limited, terms such as "installed," "connected," "connect," and "fixed" should be interpreted broadly. For example, they may refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this utility model based on specific circumstances.

[0034] The following will be combined with the Figure 1 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0035] The rolling equipment of an embodiment of the present invention includes a reeling device, a rolling device, a testing device, a weighing device and the reeling device 100 of the above embodiment. Along the pulling direction of the pole piece 200, the reeling device, the testing device, the weighing device and the reeling device are arranged in sequence.

[0036] It should be noted that the unwinding device is used to set the pole piece 200 .

[0037] See also Figure 1 The winding device 100 of the embodiment of the present invention includes a winding mechanism 10, an unwinding mechanism 20, and a splicing mechanism 30. The winding mechanism 10 is used to pull the pole piece 200 along the tape and rewind the pole piece 200; the unwinding mechanism 20 is used to set the traction material 300; the splicing mechanism 30 is arranged between the unwinding mechanism 20 and the winding mechanism 10 along the traction direction of the pole piece 200. When the cut end of the working pole piece, the end of the spare pole piece, and the traction material 300 are all located in the splicing mechanism 30, the splicing mechanism 30 is used to connect the traction material 300 between the cut end of the working pole piece and the end of the spare pole piece.

[0038] Compared with the prior art, the winding device 100 of the embodiment of the utility model, through the coordinated use of the winding mechanism 10, the unwinding mechanism 20 and the belt connecting mechanism 30, is arranged between the unwinding mechanism 20 and the winding mechanism 10 along the traction direction of the pole piece 200, effectively changing the position of the unwinding mechanism 20, and arranging the winding mechanism before the belt connecting mechanism 30 and after the weighing device, effectively avoiding the traction material 300 from being broken due to the force exerted by the rollers after passing through multiple rollers.

[0039] It should be noted that the working electrode is the roll of material from which the electrode 200 strip is being unwound, and the standby electrode is the roll of material waiting to be used. Reel change means that when the working strip on the working electrode is unwound, the working strip needs to be cut, and then the working strip is connected to the standby strip on the standby electrode, so that the electrode 200 strip can continue to be unwound downstream, thus completing the reel change.

[0040] In some embodiments, the unwinding mechanism 20 includes an unwinding base 21 and an unwinding roller 22. The unwinding roller 22 is rotatably mounted on the base and is used to set the traction material 300. The unwinding base 21 and the unwinding roller 22 are used in conjunction with each other, and the unwinding roller 22 is rotatably mounted on the base, ensuring that the traction material 300 can be smoothly wound and released when subjected to traction.

[0041] The winding mechanism 10 includes a winding base 11, a winding roller 12 and a drive assembly. The winding roller 12 is rotatably arranged on the winding base 11. The winding roller is used to pull the pole piece 200 and wind up the pole piece 200. The output shaft of the drive assembly is connected to the winding roller 12. Through the coordinated use of the winding base 11, the winding roller 12 and the drive assembly, efficient and stable winding of the pole piece 200 can be achieved. Among them, the winding base 11 serves as the supporting structure of the entire winding mechanism 10. It not only bears the weight of the winding roller 12, but also ensures the stability of the winding roller 12 during rotation. The winding roller 12 is in direct contact with the pole piece 200. Through the friction and traction force on its surface, it pulls the pole piece 200 from one end of the production line to the other end and gradually winds it up. The output shaft of the driving assembly is connected to the winding roller shaft 12 . Under the action of the driving assembly, the winding roller shaft 12 can rotate at a certain speed and direction, thereby achieving stable winding of the pole piece 200 .

[0042] In some embodiments, the winding device 100 also includes a tension control system, which includes a controller and a tension sensor. The tension sensor is arranged on the unwinding roller 22 and / or the winding roller 12, and the controller is electrically connected to the tension sensor and the drive assembly. Through the setting of the tension control system, the tension of the pole piece 200 and / or the traction material 300 during the winding process can be monitored and adjusted in real time to ensure the stability of the winding process and the quality of the material. The tension sensor can accurately sense the tension changes of the pole piece 200 and / or the traction material 300 during the unwinding and winding process, and convert these changes into electrical signals and transmit them to the controller. The controller accurately controls the drive assembly based on the received electrical signals, combined with the preset tension parameters and algorithms, thereby realizing real-time adjustment of the tension of the pole piece 200 and / or the traction material 300.

[0043] Specifically, when the tension sensor detects excessive tension, the controller will issue an instruction to reduce the speed or output power of the drive assembly to reduce the tension of the pole piece 200 and / or the traction material 300, thereby preventing the pole piece 200 and / or the traction material 300 from being damaged due to excessive stretching. Conversely, when the tension is detected to be too low, the controller will increase the speed or output power of the drive assembly to increase the tension of the pole piece 200 and / or the traction material 300, ensuring that the pole piece 200 and / or the traction material 300 can fit tightly on the winding roller 12, thereby avoiding problems such as looseness or wrinkles.

[0044] In some embodiments, the unwinding tension of the unwinding mechanism 20 is between 10 and 150 N. By setting the unwinding tension of the unwinding mechanism 20, the unwinding tension of the unwinding mechanism 20 should be neither too high nor too low. If the unwinding tension of the unwinding mechanism 20 is too high, the traction material 300 may be damaged due to excessive stretching. If the unwinding tension of the unwinding mechanism 20 is too low, the traction material 300 may not be able to maintain a stable conveying speed in a relaxed state, thereby affecting the accuracy and efficiency of subsequent processing steps.

[0045] Therefore, by setting the unwinding tension of the unwinding mechanism 20 to 10-150 N, the traction material 300 can be effectively prevented from being broken, and the flatness of the unwinding of the traction material 300 can be guaranteed.

[0046] Furthermore, the unwinding tension of the unwinding mechanism 20 is 10 N, 15 N, 20 N, 30 N, 40 N, 43 N, 50 N, 60 N, 61 N, 70 N, 80 N, 90 N, 98 N, 100 N, 110 N, 120 N, 130 N, 140 N, or 150 N. However, the values ​​are not limited to the values ​​listed above, and other values ​​within the numerical range are also applicable.

[0047] In some embodiments, the diameter of the pulling material (300) is greater than 280 mm. A pulling material 300 with a larger diameter generally means longer continuous production time because a larger roll diameter can reduce the frequency of roll changes when changing rolls. This helps improve overall production efficiency and reduce production interruptions caused by roll changes.

[0048] In addition, using a large diameter traction material 300 can reduce material waste generated during roll changes. This is because each roll change will result in a section of traction material 300 being unable to be effectively utilized, and a larger roll diameter means fewer roll changes, thereby reducing this waste.

[0049] In some embodiments, the winding device 100 further includes a first conveying mechanism 40 and a second conveying mechanism 50. Along the traction direction of the pole piece 200, the first conveying mechanism 40 is arranged between the unwinding mechanism 20 and the splicing mechanism 30, and the second conveying mechanism 50 is arranged between the splicing mechanism 30 and the winding mechanism 10. By using the first conveying mechanism 40 and the second conveying mechanism 50 in conjunction with each other, the transmission efficiency and stability of the pole piece 200 and the traction material 300 can be effectively improved. The first conveying mechanism 40 is responsible for smoothly conveying the traction material 300 from the unwinding mechanism 20 to the splicing mechanism 30, ensuring that the movement of the traction material 300 in the initial stage will not be stuck or offset. The second conveying mechanism 50 further conveys the pole piece 200 processed by the splicing mechanism 30 to the winding mechanism 10. This effectively avoids deformation or offset of the pole piece 200 due to tension changes during the winding process.

[0050] In some embodiments, the first conveying mechanism 40 includes a first conveying roller 41 and a second conveying roller 42. The first conveying roller 41 and the second conveying roller 42 are sequentially arranged between the unwinding mechanism 20 and the splicing mechanism 30 along the pulling direction of the pole piece 200. The first conveying roller 41 and the second conveying roller 42 are used to convey the pulled material 300 from the unwinding mechanism 20 to the splicing mechanism 30. The coordinated use of the first conveying roller 41 and the second conveying roller 42 forms a continuous and smooth conveying path. This allows the pulled material 300 to smoothly transition from the unwinding mechanism 20 to the splicing mechanism 30, avoiding interruptions and delays in the production process.

[0051] In some embodiments, the second conveying mechanism 50 includes a third conveying roller 51 and a fourth conveying roller 52. Along the pulling direction of the pole piece 200, the third conveying roller 51 and the fourth conveying roller 52 are sequentially arranged between the splicing mechanism 30 and the winding device 100, and the pole piece 200 is configured to pass between the third conveying roller 51 and the fourth conveying roller 52. The coordinated use of the third conveying roller 51 and the fourth conveying roller 52 can ensure the stability and accuracy of the pole piece 200 during the conveying process. The third conveying roller 51 mainly plays a guiding and supporting role to ensure that the pole piece 200 does not deviate from the predetermined path during the conveying process. The fourth conveying roller 52 is more responsible for smoothly feeding the pole piece 200 into the winding device 100 to ensure that the tension and speed are properly controlled during the winding process.

[0052] In some embodiments, the winding device 100 further includes a frame 60, on which the winding mechanism 10, the unwinding mechanism 20 and the splicing mechanism 30 are all arranged. The winding mechanism 10 is arranged at one end of the frame 60, and the unwinding mechanism 20 and the splicing mechanism 30 are both arranged at the other end of the frame 60, and the splicing mechanism 30 is located above the unwinding mechanism 20. By providing the frame 60, the structure of the winding device 100 is made more compact, and is easy to install and maintain. The frame 60 serves as the basis for supporting and fixing each mechanism, ensuring the stability and reliability of the winding, unwinding and splicing processes. At the same time, the winding mechanism 10 is provided at one end of the frame 60, while the unwinding mechanism 20 and the splicing mechanism 30 are arranged at the other end. This layout not only optimizes the workflow, but also makes the equipment run more smoothly, reducing unnecessary interference and failures.

[0053] Furthermore, the winding mechanism 10 is arranged on the frame 60 through the winding base 11 , and the unwinding mechanism 20 is arranged on the frame 60 through the unwinding base 21 .

[0054] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced within the present invention.

Claims

1. A winding device, characterized in that: include: A winding mechanism (10) is used for pulling the pole piece (200) along a tape and winding the pole piece (200); An unwinding mechanism (20) for setting a traction material (300); a tape splicing mechanism (30) disposed between the unwinding mechanism (20) and the rewinding mechanism (10) along the pulling direction of the pole piece (200); When the cut end of the working electrode piece, the end of the spare electrode piece, and the traction material (300) are all located in the connecting mechanism (30), the connecting mechanism (30) is used to connect the traction material (300) between the cut end of the working electrode piece and the end of the spare electrode piece.

2. The winding device according to claim 1, wherein: The unwinding mechanism (20) includes an unwinding base (21) and an unwinding roller (22), wherein the unwinding roller (22) is rotatably arranged on the base, and the unwinding roller (22) is used to set the traction material (300). The winding mechanism (10) includes a winding base (11), a winding roller (12) and a drive assembly, wherein the winding roller (12) is rotatably arranged on the winding base (11), and the winding roller is used to pull the pole piece (200) to run and wind up the pole piece (200), and the output shaft of the drive assembly is connected to the winding roller (12).

3. The winding device according to claim 2, wherein: It also includes a tension control system, which includes a controller and a tension sensor. The tension sensor is arranged on the unwinding roller (22) and / or the winding roller (12), and the controller is electrically connected to the tension sensor and the drive component.

4. The winding device according to claim 3, wherein: The unwinding tension of the unwinding mechanism (20) is 10-150N.

5. The winding device according to claim 1, wherein: The diameter of the traction material (300) is greater than 280 mm.

6. The winding device according to claim 1, wherein: The invention also includes a first conveying mechanism (40) and a second conveying mechanism (50). Along the pulling direction of the pole piece (200), the first conveying mechanism (40) is arranged between the unwinding mechanism (20) and the tape connecting mechanism (30), and the second conveying mechanism (50) is arranged between the tape connecting mechanism (30) and the winding mechanism (10).

7. The winding device according to claim 6, wherein: The first conveying mechanism (40) comprises a first conveying roller (41) and a second conveying roller (42). Along the pulling direction of the pole piece (200), the first conveying roller (41) and the second conveying roller (42) are sequentially arranged between the unwinding mechanism (20) and the belt connecting mechanism (30). The first conveying roller (41) and the second conveying roller (42) are used to convey the pulling material (300) from the unwinding mechanism (20) to the belt connecting mechanism (30).

8. The winding device according to claim 6, wherein: The second conveying mechanism (50) includes a third conveying roller (51) and a fourth conveying roller (52). Along the pulling direction of the pole piece (200), the third conveying roller (51) and the fourth conveying roller (52) are sequentially arranged between the belt splicing mechanism (30) and the winding device, and the pole piece (200) is configured to pass between the third conveying roller (51) and the fourth conveying roller (52).

9. The winding device according to claim 1, wherein: The invention also includes a frame (60), wherein the winding mechanism (10), the unwinding mechanism (20) and the tape connecting mechanism (30) are all arranged on the frame (60), the winding mechanism (10) is arranged at one end of the frame (60), the unwinding mechanism (20) and the tape connecting mechanism (30) are both arranged at the other end of the frame (60), and the tape connecting mechanism (30) is located above the unwinding mechanism (20).

10. A roller pressing device, characterized in that: The invention comprises an unwinding device, a rolling device, a testing device, a weighing device and a winding device according to any one of claims 1 to 9, wherein the unwinding device, the testing device, the weighing device and the winding device (100) are arranged in sequence along the pulling direction of the pole piece (200).

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