Unreeling and deviation rectifying device for tab material for lithium ion battery

Abstract

The invention discloses an unwinding and deviation rectifying device for a tab material for a lithium ion battery, and relates to the technical field of battery manufacturing, the unwinding and deviation rectifying device comprises a workbench, a fourth rotating shaft is rotatably connected in the workbench, the fourth rotating shaft is fixedly connected with a rotary table, one side of the rotary table is slidably connected with an arc-shaped plate, and a telescopic mechanism is arranged in the arc-shaped plate; the telescopic mechanism comprises a telescopic rod fixedly connected into the arc-shaped plate, the telescopic rod is slidably connected with a third fixing plate, the side, away from the rotary table, of the third fixing plate is rotatably connected with a second gear, a plurality of sliding grooves are formed in the surface of the second gear, the sliding grooves are slidably connected with sliding rods, and the sliding rods are fixedly connected with the telescopic rod. And the fifth rotating shaft rotates to finally drive the telescopic mechanism to operate, the radius size of a circle formed by the multiple arc-shaped plates can be changed, the radius size of a winding roller formed by the multiple arc-shaped plates can be conveniently adjusted according to different characteristics of different tab materials, and the integrity of the tab materials and the battery performance are guaranteed.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and particularly to an unwinding deviation rectifying device for tab materials used in lithium-ion batteries. Background Art

[0002] Lithium-ion batteries are widely used in various large, medium and small-sized electric devices such as electric tools, mobile phones, laptop computers, etc. due to their advantages of high energy density, long cycle life, low self-discharge rate, etc. With the continuous development of the technology of electric devices, the market has higher and higher requirements for the performance of lithium-ion batteries. This requires ensuring high precision and high quality in all production links during the production process of lithium-ion batteries. In the production process of lithium-ion batteries, the sheet making process is a very crucial link. In this process, tabs need to be welded to the copper foil area of the electrode sheet, and the electrode sheet usually exists in a roll material state. Before subsequent processing such as welding tabs, the electrode sheet needs to be unwound first. During the unwinding process, the position accuracy of the electrode sheet has an important impact on the smooth progress of subsequent processes and the final quality of the battery.

[0003] After retrieval, a patent with the Chinese patent number CN114406516B discloses a deviation rectifying unwinding device for electrode sheets, including an expansion shaft module, a main shaft module, an unwinding auxiliary module and a moving platform module. The expansion shaft module includes an expansion shaft for winding the electrode sheet roll material. The main shaft module is arranged on the moving platform module and coupled to the expansion shaft module and the unwinding auxiliary module. The main shaft module is used to drive the expansion shaft to rotate for unwinding the electrode sheet. The moving platform module is used to drive the main shaft module, the expansion shaft module and the unwinding auxiliary module to move according to the electrode sheet deviation signal to compensate for the errors generated during the unwinding process of the electrode sheet. A deviation rectifying rewinding device for electrode sheets is also correspondingly disclosed. The present invention can effectively reduce the errors in the rewinding and unwinding of battery electrode sheets and improve the accuracy of rewinding and unwinding of electrode sheets.

[0004] However, in the actual use process of the above device, it is difficult to adjust the radius of the rewinding roller. Due to the different characteristics of different tab materials, it may cause the ultra-thin material to break due to excessive interlayer pressure on the large-diameter rewinding roller, or the thick material to wrinkle due to too small a winding diameter on the small-diameter rewinding roller, affecting the integrity of the material and the performance of the battery. Therefore, an unwinding deviation rectifying device for tab materials used in lithium-ion batteries needs to be proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem in the prior art that it is difficult to adjust the radius of the rewinding roller. Due to the different characteristics of different tab materials, it may cause the ultra-thin material to break due to excessive interlayer pressure on the large-diameter rewinding roller, or the thick material to wrinkle due to too small a winding diameter on the small-diameter rewinding roller, affecting the integrity of the material and the performance of the battery, and to propose an unwinding deviation rectifying device for tab materials used in lithium-ion batteries.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A deviation rectifying device for unreeling an ear material for a lithium-ion battery, comprising a workbench, wherein a fourth rotating shaft is rotatably connected inside the workbench, a turntable is fixedly connected to the fourth rotating shaft, an arc-shaped plate is slidably connected to one side of the turntable, a telescopic mechanism is arranged inside the arc-shaped plate, the telescopic mechanism comprises a telescopic rod fixedly connected inside the arc-shaped plate, the telescopic rod is slidably connected with a third fixing plate, a second gear is rotatably connected to a side of the third fixing plate away from the turntable, a plurality of sliding grooves are formed on the surface of the second gear, a sliding rod is slidably connected to the sliding groove, and the sliding rod is fixedly connected with the telescopic rod; A height adjusting mechanism is arranged inside the workbench, the height adjusting mechanism comprises a first threaded rod rotatably connected inside the workbench, the first threaded rod is threadedly connected with a lifting plate, a tension adjusting roller for maintaining the tension of the ear material is rotatably connected to a side of the lifting plate away from the first threaded rod, a third rotating shaft is fixedly connected to a lower part of the first threaded rod, and the third rotating shaft penetrates through the workbench and extends to the lower part of the workbench; Wherein, a plurality of the sliding grooves, the sliding rods and the telescopic rods are arranged, which is convenient for simultaneously moving a plurality of arc-shaped plates, thereby changing the radius size. Two groups of the first threaded rod and the lifting plate are arranged, which is convenient for keeping the tension adjusting roller stable when lifting.

[0007] The above technical solutions further include: The turntable is rotatably connected to the workbench on a side away from the arc-shaped plate, the third fixing plate is fixedly connected to the turntable, a second motor is fixedly installed on a side of the turntable away from the arc-shaped plate, a fifth rotating shaft is arranged at an output end of the second motor, the fifth rotating shaft is rotatably connected to the turntable, a first gear is fixedly connected to the fifth rotating shaft, and the first gear is meshed with the second gear; Wherein, the turntables are symmetrically arranged at both ends of the arc-shaped plate, and a gap is left between the turntables for installing the second motor.

[0008] A third gear is fixedly connected to the fifth rotating shaft, the third gear is meshed with a fourth gear, the fourth gear is rotatably connected to the turntable, the fourth gear is meshed with a fifth gear, and the fifth gear is fixedly connected to the fourth rotating shaft.

[0009] A second clutch is provided on one side of the fourth rotating shaft. The second clutch is fixedly connected to the workbench. A first rotating shaft is provided on the side of the second clutch away from the fourth rotating shaft. The first rotating shaft is rotatably connected to the workbench. The first rotating shaft is drivingly connected to a third belt. The side of the third belt away from the first rotating shaft is drivingly connected to a second rotating shaft. The second rotating shaft is rotatably connected to the workbench. The second rotating shaft is fixedly connected to a first bevel gear set. The first bevel gear set is fixedly connected to the third rotating shaft. Among them, the second clutch facilitates disconnecting the connection between the fourth rotating shaft and the first rotating shaft when the device is winding, so that the rotation of the fourth rotating shaft no longer affects the height of the tensioning roller at this time.

[0010] A third motor is fixedly installed on one side of the workbench. The output end of the third motor is provided with a sixth rotating shaft. The sixth rotating shaft is rotatably connected to the workbench. A control panel is provided on the side of the workbench close to the third motor. Among them, the control panel facilitates controlling the operation of the second motor, the third motor, and the first motor, and simultaneously controlling the states of the first clutch and the second clutch.

[0011] The sixth rotating shaft is drivingly connected to a second belt. The side of the second belt away from the sixth rotating shaft is drivingly connected to a seventh rotating shaft. The seventh rotating shaft is rotatably connected to the workbench. A first clutch is provided on one side of the seventh rotating shaft. The first clutch is fixedly connected to the workbench. The side of the first clutch away from the seventh rotating shaft is movably connected to the fourth rotating shaft. Among them, the first clutch facilitates disconnecting the connection between the fourth rotating shaft and the seventh rotating shaft when adjusting the position of the arc-shaped plate, so that the rotation of the fourth rotating shaft does not affect the seventh rotating shaft at this time.

[0012] The sixth rotating shaft is drivingly connected to a first belt. The side of the first belt away from the sixth rotating shaft is drivingly connected to a material feeding roller for releasing the tab material.

[0013] A first fixing plate is fixedly connected to the inside of the workbench. A fixing column is fixedly connected to the upper part of the first fixing plate. A second fixing plate is fixedly connected to the upper part of the fixing column. A threaded sleeve is fixedly connected to the upper part of the second fixing plate. A second threaded rod is threadedly connected to the threaded sleeve. The lower part of the second threaded rod is rotatably connected to a limiting plate. The two sides of the limiting plate are slidably connected to the fixing column. Among them, the sliding connection between the limiting plate and the fixing column facilitates keeping the limiting plate stable when adjusting the height of the limiting plate.

[0014] A first motor is fixedly installed on the upper part of the first fixed plate. A deviation rectifying mechanism is arranged at the output end of the first motor. The deviation rectifying mechanism includes a second bevel gear set arranged at the output end of the first motor. The second bevel gear set is fixedly connected with a third threaded rod. The third threaded rod is rotatably connected with the limiting plate. A slide plate is threadedly connected to the third threaded rod. Wherein, two sets of the deviation rectifying mechanisms are arranged and distributed on both sides of the limiting plate.

[0015] The slide plate is slidably connected with a limiting rod. The limiting rod is fixedly connected with the first fixed plate. One side of the slide plate close to the first fixed plate is fixedly connected with a connecting rod. The other side of the connecting rod away from the slide plate is fixedly connected with a limiting block. The limiting block is slidably connected with the limiting plate. Wherein, the slidable connection between the limiting block and the limiting plate facilitates the slide plate to drive the limiting block to move through the connecting rod.

[0016] The present invention has the following beneficial effects: In the present invention, before unwinding, by rotating the fifth rotating shaft, the telescopic mechanism is finally driven to operate, and the radius of the circle formed by multiple arc-shaped plates can be changed, so as to facilitate adjusting the radius of the winding roller formed by multiple arc-shaped plates according to different characteristics of different ear materials, and ensuring the integrity of the ear materials and the battery performance.

[0017] In the present invention, while adjusting the radius of the winding roller through the telescopic mechanism, the third gear will be driven to rotate, and finally the height adjusting mechanism will be driven to operate, so that the height of the tensioning roller can be adjusted at the same time, facilitating accurately controlling the tension of the ear materials during the unwinding process, and thus ensuring that the tension of the ear materials is always within a suitable range.

[0018] In the present invention, by rotating the second threaded rod, under the action of the threaded sleeve, the fixed column and the second fixed plate, the height of the limiting plate can be adjusted, and then the distance between the two limiting blocks can be adjusted through the deviation rectifying mechanism, that is, it is convenient to adapt to ear materials with different thicknesses and widths, reducing the deviation error in the thickness and width directions of the materials, ensuring that the ear materials always remain in the correct position during the unwinding process, and thus improving the deviation rectifying accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic diagram of the overall structure of a unwinding deviation rectifying device for ear materials of a lithium-ion battery proposed by the present invention; Figure 2 is a side view of the overall structure in the present invention; Figure 3 is a schematic diagram of the internal structure of the workbench in the present invention; Figure 4 is a schematic diagram of the deviation rectifying mechanism in the present invention; Figure 5 Schematic diagram of the internal structure of the arc-shaped plate in the present invention; Figure 6 Schematic diagram of the telescopic mechanism in the present invention; Figure 7 is Figure 1 Enlarged schematic diagram of the structure at position A in Figure 8 is Figure 2 Enlarged schematic diagram of the structure at position B in

[0020] In the figure: 1, workbench; 2, feeding roller; 3, first belt; 4, second belt; 5, first threaded rod; 6, tensioning roller; 7, first clutch; 8, first fixing plate; 9, control panel; 10, arc-shaped plate; 11, turntable; 12, first rotating shaft; 13, third belt; 14, second rotating shaft; 15, first bevel gear set; 16, third rotating shaft; 17, second fixing plate; 18, fixed column; 19, threaded sleeve; 20, second threaded rod; 21, limiting plate; 22, limiting rod; 23, sliding plate; 24, third threaded rod; 25, first motor; 26, second bevel gear set; 27, connecting rod; 28, limiting block; 29, second motor; 30, fourth rotating shaft; 31, fifth rotating shaft; 32, first gear; 33, second gear; 34, chute; 35, sliding rod; 36, telescopic rod; 37, third fixing plate; 38, third gear; 39, fourth gear; 40, fifth gear; 41, third motor; 42, sixth rotating shaft; 43, second clutch; 44, lifting plate; 45, seventh rotating shaft. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1 Refer to Figure 1 , Figure 2 , Figure 3 , Figure 5 , and Figure 6, a deviation rectifying device for unwinding an ear material for a lithium-ion battery, comprising a workbench 1. A fourth rotating shaft 30 is rotatably connected inside the workbench 1. The fourth rotating shaft 30 is fixedly connected with a turntable 11. An arc-shaped plate 10 is slidably connected to one side of the turntable 11. A telescopic mechanism is arranged inside the arc-shaped plate 10. The telescopic mechanism includes a telescopic rod 36 fixedly connected inside the arc-shaped plate 10. The telescopic rod 36 is slidably connected with a third fixing plate 37. A second gear 33 is rotatably connected to the side of the third fixing plate 37 away from the turntable 11. A plurality of sliding grooves 34 are formed on the surface of the second gear 33. A sliding rod 35 is slidably connected to the sliding groove 34. The sliding rod 35 is fixedly connected with the telescopic rod 36; A height adjusting mechanism is arranged inside the workbench 1. The height adjusting mechanism includes a first threaded rod 5 rotatably connected inside the workbench 1. The first threaded rod 5 is threadedly connected with a lifting plate 44. A tensioning roller 6 for maintaining the tension of the ear material is rotatably connected to the side of the lifting plate 44 away from the first threaded rod 5. A third rotating shaft 16 is fixedly connected to the lower part of the first threaded rod 5. The third rotating shaft 16 penetrates through the workbench 1 and extends to the lower part of the workbench 1.

[0023] Reference Figure 1 , Figure 5 , and Figure 6 , the side of the turntable 11 away from the arc-shaped plate 10 is rotatably connected to the workbench 1. The third fixing plate 37 is fixedly connected to the turntable 11. A second motor 29 is fixedly installed on the side of the turntable 11 away from the arc-shaped plate 10. An output end of the second motor 29 is provided with a fifth rotating shaft 31. The fifth rotating shaft 31 is rotatably connected to the turntable 11. The fifth rotating shaft 31 is fixedly connected with a first gear 32. The first gear 32 is meshed with the second gear 33.

[0024] Reference Figure 6 , the fifth rotating shaft 31 is fixedly connected with a third gear 38. The third gear 38 is meshed with a fourth gear 39. The fourth gear 39 is rotatably connected to the turntable 11. The fourth gear 39 is meshed with a fifth gear 40. The fifth gear 40 is fixedly connected with the fourth rotating shaft 30.

[0025] Reference Figure 2 and Figure 6 , a second clutch 43 is arranged on one side of the fourth rotating shaft 30. The second clutch 43 is fixedly connected to the workbench 1. A first rotating shaft 12 is arranged on the side of the second clutch 43 away from the fourth rotating shaft 30. The first rotating shaft 12 is rotatably connected to the workbench 1. The first rotating shaft 12 is drivingly connected with a third belt 13. The third belt 13 is drivingly connected with a second rotating shaft 14 on the side away from the first rotating shaft 12. The second rotating shaft 14 is rotatably connected to the workbench 1. The second rotating shaft 14 is fixedly connected with a first bevel gear set 15. The first bevel gear set 15 is fixedly connected with the third rotating shaft 16.

[0026] In this embodiment, when it is necessary to adjust the radius of the winding roller composed of multiple arc plates 10, the second motor 29 is started, so that the fifth rotating shaft 31 arranged at the output end of the second motor 29 rotates. The fifth rotating shaft 31 will drive the fixedly connected first gear 32 to rotate. The first gear 32 will cause the meshing-connected second gear 33 to rotate, that is, the slide bar 35 will slide inside the chute 34 opened on the surface of the second gear 33, and the chute 34 has a radian. When the slide bar 35 slides inside the chute 34, it will drive the telescopic rod 36 fixedly connected to the slide bar 35 to slide on the surface of the third fixing plate 37. The sliding of the telescopic rod 36 will drive the fixedly connected arc plate 10 to slide on the surface of the turntable 11. And the chute 34, the slide bar 35, the telescopic rod 36 and the arc plate 10 are all provided in multiple groups, and the parts and installation methods are the same, so that multiple groups of arc plates 10 will slide synchronously away from or close to the fourth rotating shaft 30, that is, it is convenient to adjust the radius of the winding roller composed of multiple arc plates 10; When the fifth rotating shaft 31 rotates to adjust the radius of the winding roller, the second clutch 43 is controlled to connect the fourth rotating shaft 30 and the first rotating shaft 12. The fifth rotating shaft 31 will drive the fixedly connected third gear 38 to rotate. The third gear 38 will finally drive the fifth gear 40 to rotate through the meshing-connected fourth gear 39. The fifth gear 40 will cause the fixedly connected fourth rotating shaft 30 to rotate, that is, the rotation of the fourth rotating shaft 30 will drive the first rotating shaft 12 to rotate through the second clutch 43. The rotation of the first rotating shaft 12 will drive the externally connected third belt 13 to transmit power. The third belt 13 will drive the connected second rotating shaft 14 to rotate. The second rotating shaft 14 will drive the third rotating shaft 16 to rotate through the fixedly connected first bevel gear set 15; The rotation of the third rotating shaft 16 will cause the fixedly connected first threaded rod 5 to rotate. When the first threaded rod 5 rotates, the lifting plate 44 connected by thread will rise and fall. Since the first bevel gear set 15, the third rotating shaft 16, the first threaded rod 5 and the lifting plate 44 are all provided in two groups, and the parts and installation methods are the same, the two lifting plates 44 are respectively rotationally connected to both sides of the tensioning roller 6. That is, when the lifting plate 44 rises and falls, it will drive the tensioning roller 6 to rise and fall, which is convenient to synchronously adjust the height of the tensioning roller 6 when adjusting the radius of the winding roller composed of multiple arc plates 10, and is convenient to accurately control the tension of the tab material during the unwinding process, so as to ensure that the tension of the tab material is always within a suitable range. After the adjustment is completed, the second clutch 43 is controlled to disconnect the connection between the fourth rotating shaft 30 and the first rotating shaft 12 to prevent the height of the tensioning roller 6 from being affected during the winding process.

[0027] Embodiment 2 Reference Figure 1 AndFigure 7 On one side of the workbench 1, a third motor 41 is fixedly installed. The output end of the third motor 41 is provided with a sixth rotating shaft 42, and the sixth rotating shaft 42 is rotatably connected to the workbench 1. A control panel 9 is arranged on one side of the workbench 1 close to the third motor 41.

[0028] Reference Figure 1 、 Figure 5 and Figure 7 The sixth rotating shaft 42 is drivingly connected to a second belt 4. The side of the second belt 4 far from the sixth rotating shaft 42 is drivingly connected to a seventh rotating shaft 45. The seventh rotating shaft 45 is rotatably connected to the workbench 1. A first clutch 7 is arranged on one side of the seventh rotating shaft 45. The first clutch 7 is fixedly connected to the workbench 1. The side of the first clutch 7 far from the seventh rotating shaft 45 is movably connected to a fourth rotating shaft 30.

[0029] Reference Figure 1 and Figure 7 The sixth rotating shaft 42 is drivingly connected to a first belt 3. The side of the first belt 3 far from the sixth rotating shaft 42 is drivingly connected to a material feeding roller 2 for releasing tab materials.

[0030] Reference Figure 1 、 Figure 3 and Figure 4 Inside the workbench 1, a first fixing plate 8 is fixedly connected. The upper part of the first fixing plate 8 is fixedly connected with a fixing column 18. The upper part of the fixing column 18 is fixedly connected with a second fixing plate 17. The upper part of the second fixing plate 17 is fixedly connected with a threaded sleeve 19. The threaded sleeve 19 is threadedly connected with a second threaded rod 20. The lower part of the second threaded rod 20 is rotatably connected with a limiting plate 21. The two sides of the limiting plate 21 are slidably connected to the fixing column 18.

[0031] Reference Figure 4 On the upper part of the first fixing plate 8, a first motor 25 is fixedly installed. The output end of the first motor 25 is provided with a deviation rectifying mechanism. The deviation rectifying mechanism includes a second bevel gear set 26 arranged at the output end of the first motor 25. The second bevel gear set 26 is fixedly connected with a third threaded rod 24. The third threaded rod 24 is rotatably connected to the limiting plate 21. The third threaded rod 24 is threadedly connected with a sliding plate 23.

[0032] Reference Figure 4 The sliding plate 23 is slidably connected with a limiting rod 22. The limiting rod 22 is fixedly connected to the first fixing plate 8. On the side of the sliding plate 23 close to the first fixing plate 8, a connecting rod 27 is fixedly connected. On the side of the connecting rod 27 far from the sliding plate 23, a limiting block 28 is fixedly connected. The limiting block 28 is slidably connected to the limiting plate 21.

[0033] In this embodiment, the control panel 9 provided on one side of the workbench 1 facilitates the control of the operation of the second motor 29, the third motor 41, and the first motor 25, and simultaneously controls the states of the first clutch 7 and the second clutch 43. When winding, the third motor 41 fixedly installed on one side of the workbench 1 is started. The third motor 41 causes the sixth rotating shaft 42 provided at the output end to rotate. The sixth rotating shaft 42 drives the seventh rotating shaft 45 to rotate through the second belt 4 connected by transmission. When winding, the first clutch 7 is controlled to connect the seventh rotating shaft 45 and the fourth rotating shaft 30. That is, when the seventh rotating shaft 45 rotates, it drives the fourth rotating shaft 30 to rotate, that is, it causes the winding roller composed of a plurality of arc-shaped plates 10 to rotate to wind the tab material. When adjusting the winding roller composed of a plurality of arc-shaped plates 10, the first clutch 7 is controlled to disconnect the connection between the seventh rotating shaft 45 and the fourth rotating shaft 30 to prevent affecting the seventh rotating shaft 45. At the same time, the rotation of the sixth rotating shaft 42 can also drive the unwinding roller 2 to rotate through the first belt 3 connected by transmission, that is, it is convenient for the unwinding roller 2 to release the tab material; Before winding, rotate the second threaded rod 20. Under the action of the threaded sleeve 19, the second threaded rod 20 drives the height of the limiting plate 21 rotatably connected to the lower part to rise and fall. The two sides of the limiting plate 21 are respectively slidably connected to the two fixed columns 18 fixedly connected to the upper part of the first fixing plate 8, which is convenient for the limiting plate 21 to keep stable when rising and falling. Adjust the height of the limiting plate 21 until the gap between the limiting plate 21 and the first fixing plate 8 fits the thickness of the tab material. At this time, start the first motor 25 to make the second bevel gear set 26 provided at the output end rotate. The second bevel gear set 26 will drive the fixedly connected third threaded rod 24 to rotate, and the slide plate 23 threadedly connected to the third threaded rod 24 is slidably connected to the limiting rod 22; The limiting rod 22 is fixedly connected to the upper part of the first fixing plate 8. That is, when the third threaded rod 24 rotates, it drives the slide plate 23 to move on the third threaded rod 24. At this time, the slide plate 23 drives the limiting block 28 to slide under the limiting plate 21 through the two groups of connecting rods 27 fixedly connected. And the second bevel gear set 26, the third threaded rod 24, the limiting rod 22 and other parts are all provided in two groups, that is, it will make the two limiting blocks 28 slidably connected to the lower part of the limiting plate 21 approach or move away from each other, that is, it is convenient to adjust the distance between the two limiting blocks 28 until it fits the width of the tab material, that is, it is convenient to adapt to tab materials of different thicknesses and widths, reduce the offset error of the material in the thickness and width directions, and improve the rectification accuracy.

[0034] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and deformations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for unwinding and correcting the deviation of a tab material for a lithium-ion battery, comprising a workbench (1), characterized in that: The workbench (1) is rotatably connected to a fourth rotating shaft (30), the fourth rotating shaft (30) is fixedly connected to a turntable (11), one side of the turntable (11) is slidably connected to an arc plate (10), a telescopic mechanism is provided inside the arc plate (10), the telescopic mechanism comprises a telescopic rod (36) fixedly connected to the inside of the arc plate (10), the telescopic rod (36) is slidably connected to a third fixed plate (37), the third fixed plate (37) is rotatably connected to a second gear (33) on a side away from the turntable (11), a plurality of slide grooves (34) are provided on the surface of the second gear (33), the slide grooves (34) are slidably connected to a slide rod (35), and the slide rod (35) and the telescopic rod (36) are fixedly connected; A height adjustment mechanism is provided inside the workbench (1), and the height adjustment mechanism comprises a first threaded rod (5) rotatably connected inside the workbench (1), the first threaded rod (5) being threadably connected to a lifting plate (44), a side of the lifting plate (44) away from the first threaded rod (5) being rotatably connected to a tightening roller (6) for maintaining the tension of the tab material, and a third rotating shaft (16) being fixedly connected to the lower part of the first threaded rod (5), the third rotating shaft (16) penetrating the workbench (1) and extending to the lower part of the workbench (1).

2. The unwinding and correcting device for a tab material for a lithium-ion battery according to claim 1, characterized in that: The side of the turntable (11) away from the arc plate (10) is rotatably connected to the workbench (1), the third fixed plate (37) is fixedly connected to the turntable (11), a second motor (29) is fixedly mounted on the side of the turntable (11) away from the arc plate (10), a fifth rotating shaft (31) is provided at the output end of the second motor (29), the fifth rotating shaft (31) is rotatably connected to the turntable (11), the fifth rotating shaft (31) is fixedly connected to a first gear (32), and the first gear (32) and the second gear (33) are meshingly connected.

3. The unwinding and correcting device for a tab material for a lithium-ion battery according to claim 2, characterized in that: The fifth rotating shaft (31) is fixedly connected to a third gear (38), the third gear (38) is meshingly connected to a fourth gear (39), the fourth gear (39) is rotationally connected to the turntable (11), the fourth gear (39) is meshingly connected to a fifth gear (40), and the fifth gear (40) is fixedly connected to the fourth rotating shaft (30).

4. The unwinding and correcting device for a tab material for a lithium-ion battery according to claim 1, characterized in that: A second clutch (43) is provided on one side of the fourth rotating shaft (30), the second clutch (43) and the workbench (1) are fixedly connected, a first rotating shaft (12) is provided on the side of the second clutch (43) away from the fourth rotating shaft (30), the first rotating shaft (12) and the workbench (1) are rotationally connected, the first rotating shaft (12) is transmission-connected to a third belt (13), the side of the third belt (13) away from the first rotating shaft (12) is transmission-connected to a second rotating shaft (14), the second rotating shaft (14) and the workbench (1) are rotationally connected, the second rotating shaft (14) is fixedly connected to a first bevel gear set (15), and the first bevel gear set (15) and the third rotating shaft (16) are fixedly connected.

5. The unwinding and correcting device for a tab material for a lithium-ion battery according to claim 1, characterized in that: A third motor (41) is fixedly mounted on one side of the workbench (1); a sixth rotating shaft (42) is provided at the output end of the third motor (41); the sixth rotating shaft (42) is rotatably connected to the workbench (1); and a control panel (9) is provided on a side of the workbench (1) close to the third motor (41).

6. The unwinding and correcting device for a tab material for a lithium-ion battery according to claim 5, characterized in that: The sixth rotating shaft (42) is transmission-connected to a second belt (4); a side of the second belt (4) away from the sixth rotating shaft (42) is transmission-connected to a seventh rotating shaft (45); the seventh rotating shaft (45) is rotationally connected to the workbench (1); a first clutch (7) is provided on one side of the seventh rotating shaft (45); the first clutch (7) is fixedly connected to the workbench (1); and a side of the first clutch (7) away from the seventh rotating shaft (45) is movably connected to the fourth rotating shaft (30).

7. The unwinding and correcting device for a tab material for a lithium-ion battery according to claim 5, characterized in that: The sixth rotating shaft (42) is drivingly connected to a first belt (3), and a side of the first belt (3) away from the sixth rotating shaft (42) is drivingly connected to a discharge roller (2) for releasing the tab material.

8. The unwinding and correcting device for a tab material for a lithium-ion battery according to claim 1, characterized in that: A first fixing plate (8) is fixedly connected inside the workbench (1), a fixing column (18) is fixedly connected to the upper part of the first fixing plate (8), a second fixing plate (17) is fixedly connected to the upper part of the fixing column (18), a threaded sleeve (19) is fixedly connected to the upper part of the second fixing plate (17), a second threaded rod (20) is threadedly connected to the threaded sleeve (19), a lower part of the second threaded rod (20) is rotatably connected to a limit plate (21), and both sides of the limit plate (21) are slidably connected to the fixing column (18).

9. The unwinding and correcting device for a tab material for a lithium-ion battery according to claim 8, characterized in that: A first motor (25) is fixedly mounted on the upper portion of the first fixed plate (8); an output end of the first motor (25) is provided with a deviation correction mechanism, the deviation correction mechanism comprising a second bevel gear set (26) provided at the output end of the first motor (25); the second bevel gear set (26) is fixedly connected to a third threaded rod (24); the third threaded rod (24) is rotationally connected to the limit plate (21); and the third threaded rod (24) is threadedly connected to a slide plate (23).

10. The unwinding and correcting device for a tab material for a lithium-ion battery according to claim 9, characterized in that: The slide plate (23) is slidably connected to the limit rod (22), the limit rod (22) and the first fixed plate (8) are fixedly connected, a side of the slide plate (23) close to the first fixed plate (8) is fixedly connected to a connecting rod (27), a side of the connecting rod (27) away from the slide plate (23) is fixedly connected to a limit block (28), and the limit block (28) and the limit plate (21) are slidably connected.

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