Cylindrical lithium battery winding device

Abstract

The present invention discloses a cylindrical lithium battery winding device, which relates to the technical field of lithium battery winding, and comprises a winding machine body, a first feeding plate is fixedly installed on the top of one side of the winding machine body, a second feeding plate fixed to the winding machine body is provided at the bottom of the first feeding plate, a first inclined plate fixed to the winding machine body is provided at one end of the first feeding plate, and a second inclined plate fixed to the winding machine body is provided at one end of the second feeding plate. The present invention has a reasonable structure, so that manual pushing of positive or negative electrode sheets will not cause deviation, reduce the defects caused by the winding of lithium battery electrode sheets, improve the winding quality of the winding device, effectively avoid the existing lithium battery winding device lacks positioning of different sizes of electrode sheets, which makes it easy to deviate when manually pushing in the electrode sheets, resulting in defects in the winding of the lithium battery electrode sheets, and at the same time facilitates manual and stable pushing of the battery electrode sheets into the winding end of the winding device for winding, expanding the scope of application of the winding device.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium battery winding, and in particular to a cylindrical lithium battery winding device. Background Art

[0002] Lithium batteries are batteries that use lithium metal or lithium alloy as positive / negative electrode materials and non-aqueous electrolyte solutions. Due to the highly active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. The current winding device laminates the independent positive electrode sheet, separator, and negative electrode sheet simultaneously and then winds them onto the lithium battery cell.

[0003] Existing lithium battery winding devices often require manual movement of the positive and negative electrode sheets to the winding area so as to wind them onto the lithium battery cells. However, there is a lack of positioning for electrode sheets of different sizes, which makes it easy for the electrode sheets to be offset when they are manually pushed in, resulting in defects in the winding of the lithium battery electrode sheets, thus affecting the winding quality of the lithium battery. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that the prior art lacks positioning of pole pieces of different sizes, which makes it easy for the pole pieces to be offset when they are manually pushed in, resulting in defects in the winding of the lithium battery pole pieces, and a cylindrical lithium battery winding device is proposed.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A cylindrical lithium battery winding device, comprising a winding machine body, a first material discharge plate is fixedly installed on the top of one side of the winding machine body, a second material discharge plate fixed to the winding machine body is provided at the bottom of the first material discharge plate, a first inclined plate fixed to the winding machine body is provided at one end of the first material discharge plate, a second inclined plate fixed to the winding machine body is provided at one end of the second material discharge plate, and a movable positioning mechanism is provided between the first inclined plate and the second inclined plate;

[0007] The movable positioning mechanism includes a first limit rod and a second limit rod, wherein the first limit rod is located at the top of the first inclined plate, away from the winding machine body, and is fixedly connected to the first inclined plate, and a first movable rod is provided on one side of the first limit rod, and the first movable rod is fixed at both ends of the bottom of the first movable rod, and the first sliding groove is provided on the two end surfaces of the top of the first inclined plate, and is slidably connected to the first sliding groove. The bottom of the second inclined plate is provided with a second connecting rod, and the two ends of the second connecting rod are respectively fixedly connected to the two second sliding blocks, and a driving assembly is provided between the first connecting rod and the second connecting rod.

[0008] Preferably, the driving assembly includes a screw nut and a transmission belt, the screw nut is located in the middle of the bottom of the first limiting rod, a rotating shaft is fixed to one side of the screw nut, a first gear is fixed to the end of the rotating shaft away from the screw nut, a first screw is provided in the middle of the bottom of the first inclined plate, and a second screw is provided in the middle of the bottom of the second inclined plate.

[0009] Preferably, the first screw passes through the first connecting rod and is threadedly connected to the first connecting rod, the second screw passes through the second connecting rod and is threadedly connected to the second connecting rod, a limiting vertical groove is provided on the middle surface of one side of the winding machine body, the transmission belt is located on the inner side of the limiting vertical groove and its two ends are respectively connected to one end of the first screw and the second screw through pulleys, and the first screw and the second screw are rotatably connected to the winding machine body through bearings near one end of the transmission belt.

[0010] Preferably, the end of the second screw away from the transmission belt is rotatably connected to the second inclined plate via a bearing seat, the end of the first screw away from the transmission belt is provided with a limit seat fixed to the first inclined plate, the end of the first screw away from the transmission belt is rotatably connected to the limit seat via a bearing, a second gear is meshedly connected to the top side of the first gear, the end of the first screw close to the limit seat passes through the second gear and is fixedly connected to the second gear, and the rotating shaft is rotatably connected to the limit seat via the bearing seat.

[0011] Preferably, a connecting limit mechanism is provided on the top of one side of the winding machine body, and the connecting limit mechanism includes two limit frames and two limit pressure plates. The two limit frames are respectively located at the top of the first material discharge plate and the second material discharge plate and are fixedly connected to the first material discharge plate and the second material discharge plate. The two limit pressure plates are respectively located on the inner side of the bottom of the two limit frames and are slidably connected to the limit frames.

[0012] Preferably, both ends of the top of the limiting pressure plate are fixed with return springs fixed to the limiting frame, movable vertical rods are provided on both sides of the top of the first discharge plate, a connecting cross rod is fixed between the tops of the two movable vertical rods, and the bottom of the connecting cross rod is fixedly connected to the two limiting pressure plates respectively.

[0013] Preferably, a plurality of anti-skid pads distributed in an array are fixed to one end of the top of the first inclined plate and the second inclined plate, and the bottom of one end of the first movable rod and the second movable rod respectively penetrate the anti-skid pads and are slidably connected to the anti-skid pads.

[0014] Preferably, a first stop rod slidably connected to the first material discharge plate is fixed at one end of the first movable rod, and a second stop rod slidably connected to the first material discharge plate is fixed at one end of the second movable rod.

[0015] Compared with the prior art, the present invention provides a cylindrical lithium battery winding device, which has the following beneficial effects:

[0016] 1. By setting up an active positioning mechanism, battery pole pieces of different sizes can be flexibly positioned. The positive pole piece is pushed into the winding end of the winding device through the first inclined plate, and the negative pole piece is pushed into the winding end of the winding device through the second inclined plate. The active positioning mechanism flexibly positions the positive pole pieces or negative pole pieces of different sizes, so that manual pushing of the positive pole piece or the negative pole piece will not cause deviation, reducing the defects caused by the winding of the lithium battery pole piece, improving the winding quality of the winding device, and effectively avoiding the problem that the existing lithium battery winding device lacks positioning for pole pieces of different sizes, which makes it easy to deviate when the pole piece is manually pushed in, resulting in defects in the winding of the lithium battery pole piece;

[0017] 2. A driving assembly is provided to simultaneously drive the first movable rod and the second movable rod to move, and the rotating screw cap is rotated to drive the rotating shaft and the first gear to rotate, and the first gear drives the second gear and the first screw to rotate, and the first screw drives the transmission belt at one end thereof to start running, and the transmission belt drives the second screw to rotate, and the first screw and the second screw rotate at the same time, and the first screw and the second screw rotate while driving the first connecting rod and the second pull rod to move, and the first connecting rod and the second pull rod drive the first movable rod and the second movable rod to move through the first slider and the second slider respectively, so as to position battery pole pieces of different sizes, so as to facilitate manual and stable pushing of the battery pole piece into the winding end of the winding device for winding, thereby expanding the application scope of the winding device;

[0018] 3. A connecting limit mechanism is provided to limit the positive and negative electrode sheets stored on the first unloading plate and the second unloading plate. The two limit pressure plates provide a certain pressure for the multiple positive and negative electrode sheets respectively, so that the positive and negative electrode sheets are more stable when stored and are convenient for manual operation.

[0019] The structure of the present invention is reasonable, so that the manual pushing of the positive electrode sheet or the negative electrode sheet will not cause deviation, the defects caused by the winding of the lithium battery electrode sheet are reduced, the winding quality of the winding device is improved, and the existing lithium battery winding device lacks positioning for electrode sheets of different sizes, which makes it easy to deviate when the electrode sheet is manually pushed in, resulting in defects in the winding of the lithium battery electrode sheet. At the same time, it is convenient to manually push the battery electrode sheet into the winding end of the winding device for winding in a stable manner, thereby expanding the application range of the winding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of a cylindrical lithium battery winding device proposed by the present invention;

[0021] Figure 2 This is a front cross-sectional view of a cylindrical lithium battery winding device proposed by the present invention;

[0022] Figure 3 This is a schematic diagram of the exploded structure of a movable positioning mechanism of a cylindrical lithium battery winding device proposed by the present invention;

[0023] Figure 4 This is a schematic diagram of the exploded structure of a connection and limiting mechanism of a cylindrical lithium battery winding device proposed by the present invention;

[0024] Figure 5 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0025] Figure 6 for Figure 3 An enlarged schematic diagram of the structure of part B.

[0026] In the figure: 1. winding machine body; 2. first unloading plate; 3. second unloading plate; 4. first inclined plate; 5. second inclined plate; 6. first limiting rod; 7. second limiting rod; 8. first movable rod; 9. first slider; 10. first slide groove; 11. first connecting rod; 12. second movable rod; 13. second slider; 14. second slide groove; 15. second connecting rod; 16. screw cap; 17. transmission belt; 18. rotating shaft; 19. first screw rod; 20. first gear; 21. second screw rod; 22. limiting vertical groove; 23. limiting seat; 24. second gear; 25. limiting frame; 26. limiting pressure plate; 27. return spring; 28. movable vertical rod; 29. ​​connecting cross bar; 30. anti-skid pad; 31. first gear rod; 32. second gear rod. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] Embodiment 1

[0030] Reference Figure 1-6 A cylindrical lithium battery winding device comprises a winding machine body 1, a first unloading plate 2 is fixedly installed on the top of one side of the winding machine body 1, a second unloading plate 3 fixed to the winding machine body 1 is provided at the bottom of the first unloading plate 2, a plurality of positive electrode sheets are stored on the first unloading plate 2, and a plurality of negative electrode sheets are stored on the second unloading plate 3, a first inclined plate 4 fixed to the winding machine body 1 is provided at one end of the first unloading plate 2, a second inclined plate 5 fixed to the winding machine body 1 is provided at one end of the second unloading plate 3, an active positioning mechanism is provided between the first inclined plate 4 and the second inclined plate 5, and the active positioning mechanism is used to flexibly position battery electrodes of different sizes so that manual pushing of positive electrode sheets or negative electrode sheets will not cause deviation;

[0031] The movable positioning mechanism includes a first limiting rod 6 and a second limiting rod 7. The first limiting rod 6 A first movable rod 8 is arranged on one side of the first limiting rod 6, and first sliders 9 are fixed at both ends of the bottom of the first movable rod 8. Both ends of the top surface of the first inclined plate 4 are provided with first slide grooves 10 slidably connected to the first sliders 9. A first connecting rod 11 is arranged at the bottom of the first inclined plate 4, and both ends of the first connecting rod 11 are respectively fixedly connected to the two first sliders 9. A second limiting rod 7 is arranged on the top of the second inclined plate 5, and both ends of the winding machine body 1 are fixedly connected to the second inclined plate 5. A second movable rod 12 is arranged on one side of the second limiting rod 7, and second sliders 13 are fixed at both ends of the bottom of the second movable rod 12. Both ends of the top surface of the second inclined plate 5 are provided with second slide grooves 14 slidably connected to the second sliders 13. A second connecting rod 15 is arranged at the bottom of the second inclined plate 5, and both ends of the second connecting rod 15 are respectively fixedly connected to the two second sliders 13. A driving component is arranged between the first connecting rod 11 and the second connecting rod 15, and the driving component is used to simultaneously drive the first movable rod 8 and the second movable rod 12 to move.

[0032] A plurality of anti-skid pads 30 distributed in an array are fixed to one end of the top of the first inclined plate 4 and the second inclined plate 5, and the bottom of one end of the first movable rod 8 and the second movable rod 12 respectively penetrate the anti-skid pads 30 and are slidably connected to the anti-skid pads 30. The anti-skid pads 30 on one end of the top of the first inclined plate 4 and the second inclined plate 5 are respectively conducive to providing a certain anti-skid effect on the positive electrode sheet and the negative electrode sheet, so that it is more stable to manually push the positive electrode sheet and the negative electrode sheet to the winding mouth of the winding device. A first stopper 31 slidably connected to the first unloading plate 2 is fixed to one end of the first movable rod 8, and a second stopper 32 slidably connected to the first unloading plate 2 is fixed to one end of the second movable rod 12. The first stopper 31 and the second stopper 32 respectively provide a certain limiting effect on the bottom of the stored positive electrode sheet and the negative electrode sheet;

[0033] The driving assembly includes a screw cap 16 and a transmission belt 17. The screw cap 16 is located in the middle of the bottom of the first limiting rod 6. A rotating shaft 18 is fixed to one side of the screw cap 16. A first gear 20 is fixed to the end of the rotating shaft 18 away from the screw cap 16. A first screw 19 is provided in the middle of the bottom of the first inclined plate 4. The first screw 19 penetrates the first connecting rod 11 and is threadedly connected to the first connecting rod 11. A second screw 21 is provided in the middle of the bottom of the second inclined plate 5. The second screw 21 penetrates the second connecting rod 15 and is threadedly connected to the second connecting rod 15. A limiting vertical groove 22 is provided on the middle surface of one side of the winding machine body 1. The transmission belt 17 is located in the limiting vertical groove 22. The inner side and both ends are respectively connected to the first screw 19 and one end of the second screw 21 through pulleys. The first screw 19 and the second screw 21 are rotatably connected to the winding machine body 1 at one end close to the transmission belt 17 through bearings. The second screw 21 is rotatably connected to the second inclined plate 5 at one end away from the transmission belt 17 through a bearing seat. The first screw 19 is provided with a limit seat 23 fixed to the first inclined plate 4 at one end away from the transmission belt 17. The first screw 19 is rotatably connected to the limit seat 23 at one end away from the transmission belt 17 through a bearing. The top side of the first gear 20 is meshed with the second gear 24. The end of the first screw 19 close to the limit seat 23 passes through the second gear 24 and is fixedly connected to the second gear 24. The rotating shaft 18 is rotatably connected to the limit seat 23 through a bearing seat.

[0034] In this embodiment, when the battery electrode sheet is manually wound, the screw cap 16 is first rotated according to the width of the positive electrode sheet and the negative electrode sheet of the battery. The screw cap 16 drives the coaxial rotating shaft 18 on one side thereof to rotate, and the rotating shaft 18 drives the first gear 20 at its end to rotate. The first gear 20 drives the second gear 24 meshing with it to rotate, and the second gear 24 drives the first screw 19 coaxial with it to rotate. The first screw 19 drives the transmission belt 17 at one end thereof to start running, and the transmission belt 17 drives the second screw 21 to rotate. The first screw 19 and the second screw 21 rotate at the same time. Since the first screw 19 passes through the first connecting rod 11 and is threadedly connected to the first connecting rod 11, and the second screw 21 passes through the second connecting rod 15 and is threadedly connected to the second connecting rod 15, the first screw 19 and the second screw 21 rotate while driving the first connecting rod 11 and the second pull rod to make linear motion. The first connecting rod 11 and the second pull rod respectively drive the first slider 9 and the second slider 13 at both ends thereof to move. The first slider 9 and the second slider 13 The first slider 9 and the second slider 13 respectively slide inside the first slide groove 10 and the second slide groove 14, and respectively drive the first movable rod 8 and the second movable rod 12 to move. The distances between the first movable rod 8 and the first limit rod 6 and the second movable rod 12 and the second limit rod 7 are adjusted to adapt to the width of the positive and negative electrode sheets of the battery to be wound. Then, the winding machine body 1 is started, and the positive and negative electrode sheets are manually pushed into the winding end of the winding machine body 1, and the positive and negative electrode sheets are respectively laminated and wound onto the battery cells of the lithium battery.

[0035] Embodiment 2

[0036] like Figure 1-2 As shown in Figure 4, this embodiment is basically the same as the first embodiment, and is more optimized in that a connecting limit mechanism is provided on the top of one side of the winding machine body 1, and the connecting limit mechanism includes two limit frames 25 and two limit pressure plates 26. The two limit frames 25 are respectively on the top of the first discharge plate 2 and the second discharge plate 3 and are fixedly connected to the first discharge plate 2 and the second discharge plate 3. The two limit pressure plates 26 are respectively located on the inner sides of the bottoms of the two limit frames 25 and are slidably connected to the limit frames 25. Both ends of the top of the limit pressure plate 26 are fixed with return springs 27 fixed to the limit frames 25. The elastic coefficient of the return spring 27 is relatively small, and it can only provide a certain limiting extrusion force for the positive and negative electrode sheets. Movable vertical rods 28 are provided on both sides of the top of the first discharge plate 2, and a connecting cross bar 29 is fixed between the tops of the two movable vertical rods 28. The bottoms of the connecting cross bar 29 are respectively fixedly connected to the two limit pressure plates 26.

[0037] In this embodiment, before winding the battery electrode sheets, the connecting cross bar 29 is pulled upward, and the connecting cross bar 29 drives the movable vertical bars 28 at both ends of its bottom to move upward respectively, and the movable vertical bars 28 drive the two limit pressure plates 26 at its bottom to move upward respectively, and the two limit pressure plates 26 slide upward on the inner sides of the two limit frames 25 respectively, and the limit pressure plates 26 squeeze the return springs 27 at both ends of its top, and the return springs 27 produce elastic deformation and are compressed, and then multiple positive electrode sheets and negative electrode sheets are stored on the first discharge plate 2 and the second discharge plate 3 respectively, and then the connecting cross bar 29 is slowly loosened, and the return spring 27 restores the elastic deformation and pushes the limit pressure plates 26, and the two limit pressure plates 26 contact the positive electrode sheets and negative electrode sheets on the top respectively.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A cylindrical lithium battery winding device, comprising a winding machine body (1), characterized in that: A first unloading plate (2) is fixedly mounted on the top of one side of the winding machine body (1); a second unloading plate (3) fixed to the winding machine body (1) is provided at the bottom of the first unloading plate (2); a first inclined plate (4) fixed to the winding machine body (1) is provided at one end of the first unloading plate (2); a second inclined plate (5) fixed to the winding machine body (1) is provided at one end of the second unloading plate (3); and a movable positioning mechanism is provided between the first inclined plate (4) and the second inclined plate (5); The movable positioning mechanism comprises a first limiting rod (6) and a second limiting rod (7), wherein the first limiting rod (6) is located at the top of the first inclined plate (4) away from the winding machine body (1) and is fixedly connected to the first inclined plate (4), a first movable rod (8) is provided on one side of the first limiting rod (6), first sliders (9) are fixed at both ends of the bottom of the first movable rod (8), first sliding grooves (10) are provided on the surfaces of both ends of the top of the first inclined plate (4) and are slidably connected to the first sliders (9), a first connecting rod (11) is provided at the bottom of the first inclined plate (4), and both ends of the first connecting rod (11) are respectively fixedly connected to the two first sliders (9), and the The second limiting rod (7) is located at the top of the second inclined plate (5) away from the winding machine body (1) and is fixedly connected to the second inclined plate (5); a second movable rod (12) is provided on one side of the second limiting rod (7); second sliders (13) are fixed at both ends of the bottom of the second movable rod (12); second sliding grooves (14) are provided on both end surfaces of the top of the second inclined plate (5) and are slidably connected to the second sliders (13); a second connecting rod (15) is provided at the bottom of the second inclined plate (5); both ends of the second connecting rod (15) are fixedly connected to the two second sliders (13) respectively; a driving component is provided between the first connecting rod (11) and the second connecting rod (15); The driving assembly comprises a screw cap (16) and a transmission belt (17), wherein the screw cap (16) is located in the middle of the bottom of the first limiting rod (6), a rotating shaft (18) is fixed on one side of the screw cap (16), and a first gear (20) is fixed on the end of the rotating shaft (18) away from the screw cap (16), a first screw rod (19) is provided in the middle of the bottom of the first inclined plate (4), and a second screw rod (21) is provided in the middle of the bottom of the second inclined plate (5), and the first screw rod (19) passes through the first connecting rod (11) and is connected to the first connecting rod ( 11) is threadedly connected, the second screw rod (21) passes through the second connecting rod (15) and is threadedly connected to the second connecting rod (15), a limiting vertical groove (22) is provided on the middle surface of one side of the winding machine body (1), the transmission belt (17) is located inside the limiting vertical groove (22) and its two ends are respectively connected to the first screw rod (19) and one end of the second screw rod (21) through pulleys, and the first screw rod (19) and the second screw rod (21) are connected to the winding machine body (1) through bearings at one end close to the transmission belt (17); The end of the second screw rod (21) away from the transmission belt (17) is rotatably connected to the second inclined plate (5) through a bearing seat, the end of the first screw rod (19) away from the transmission belt (17) is provided with a limit seat (23) fixed to the first inclined plate (4), the end of the first screw rod (19) away from the transmission belt (17) is rotatably connected to the limit seat (23) through a bearing, the top side of the first gear (20) is meshedly connected with the second gear (24), the end of the first screw rod (19) close to the limit seat (23) passes through the second gear (24) and is fixedly connected to the second gear (24), and the rotating shaft (18) is rotatably connected to the limit seat (23) through the bearing seat.

2. A cylindrical lithium battery winding device according to claim 1, characterized in that: A connection limit mechanism is provided at the top of one side of the winding machine body (1), and the connection limit mechanism comprises two limit frames (25) and two limit pressure plates (26). The two limit frames (25) are respectively located at the top of the first unloading plate (2) and the second unloading plate (3) and are fixedly connected to the first unloading plate (2) and the second unloading plate (3). The two limit pressure plates (26) are respectively located at the inner sides of the bottoms of the two limit frames (25) and are slidably connected to the limit frames (25).

3. A cylindrical lithium battery winding device according to claim 2, characterized in that: Both ends of the top of the limit pressure plate (26) are fixed with return springs (27) fixed to the limit frame (25); both sides of the top of the first discharge plate (2) are provided with movable vertical rods (28); a connecting cross rod (29) is fixed between the tops of the two movable vertical rods (28); and the bottom of the connecting cross rod (29) is fixedly connected to the two limit pressure plates (26) respectively.

4. A cylindrical lithium battery winding device according to claim 1, characterized in that: A plurality of anti-skid pads (30) distributed in an array are fixed to one end of the top of the first inclined plate (4) and the second inclined plate (5); the bottom of one end of the first movable rod (8) and the second movable rod (12) respectively penetrate the anti-skid pads (30) and are slidably connected to the anti-skid pads (30).

5. A cylindrical lithium battery winding device according to claim 1, characterized in that: A first stopper (31) slidably connected to the first material discharge plate (2) is fixed to one end of the first movable rod (8), and a second stopper (32) slidably connected to the first material discharge plate (2) is fixed to one end of the second movable rod (12).

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