Slice making device, lamination equipment and battery production line

Abstract

The utility model relates to the technical field of battery production and manufacturing, and discloses a piece production device, piece lamination equipment and a battery production line. The laser cutters are arranged above the fixed table, the number of the laser cutters is at least two, and the at least two laser cutters are suitable for cutting a pole piece material belt into one or a plurality of pole piece single pieces; and the movable cutting table is movably arranged on the fixed table, the movable cutting table is suitable for bearing and fixing a pole piece material belt, and the movable cutting table is suitable for driving the pole piece material belt to move below the at least two laser cutters. According to the utility model, the movable cutting table is arranged to drive the pole piece material belt to move, and at least two laser cutters are used to complete pole piece production of single pole pieces in the moving process of the pole piece material belt, so that cutting of pole lugs and slitting of the pole piece material belt can be completed in one working procedure, the pole piece production device is simplified and integrated, and the production efficiency is improved. The occupied space is reduced, and the flaking efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production and manufacturing, and in particular to a film making device, a film stacking device and a battery production line. Background Art

[0002] The production of pole pieces is an important part of the battery lamination process. The production of pole pieces refers to the use of cutting equipment to cut the pole piece strip into pole piece single pieces for lamination. In the prior art, the production process is divided into two steps: the preparation of pole ears and the slitting of the strip. That is, in the former step, the pole ears are prepared at the predetermined position on the pole piece strip by using metal die cutting or laser cutting, and then in the latter step, the pole piece strip with the pole ears is transported to a fixed production table, and then a laser cutter or a cutter is used to cut the pole piece strip into pole pieces. Therefore, the overall structure of the production device is complicated and the production efficiency is low. Utility Model Content

[0003] In view of this, the utility model provides a film making device, a laminating device and a battery production line to solve the problems of complex overall structure and low film making efficiency of the film making device in the prior art.

[0004] In the first aspect, the utility model provides a film making device, comprising: a fixed table; a laser cutter, which is arranged above the fixed table and is provided with at least two, and the at least two laser cutters are suitable for cutting the pole piece strip into one or several pole piece single pieces; a mobile cutting table, which is movably arranged on the fixed table, and the mobile cutting table is suitable for carrying and fixing the pole piece strip, and the mobile cutting table is suitable for driving the pole piece strip to move to the bottom of at least two of the laser cutters.

[0005] Beneficial effect: A mobile cutting table is set up to drive the movement of the pole piece strip, and at least two laser cutters are used to complete the production of a single pole piece during the movement of the pole piece strip. Therefore, the cutting of the pole ear and the slitting of the pole piece strip can be completed in one process, which simplifies and integrates the production device, reduces space occupancy, and improves production efficiency.

[0006] In an optional embodiment, two laser cutters are provided, one of which is suitable for cutting the pole tab and the fillet on one side of the pole tab, and the other laser cutter is suitable for slitting the pole sheet strip and cutting the fillet on the side away from the pole tab.

[0007] Beneficial effect: Two laser cutters can be used to complete the preparation of the pole ear, the cutting of the fillets on both sides, and the slitting of the pole piece strip. The cutting path of each laser cutter is reasonable, which further ensures the production efficiency.

[0008] In an optional embodiment, the mobile cutting table is arranged to be reciprocatingly movable along a straight line, and the two laser cutters are arranged at intervals along the moving path of the mobile cutting table. The mobile cutting table has a first position and a second position on the fixed table. In the first position, the mobile cutting table receives and fixes the pole piece strip, and the two laser cutters cut the pole piece strip during the transfer from the first position to the second position.

[0009] Beneficial effect: The mobile cutting table is set to move back and forth, and one mobile cutting table is used in conjunction with two laser cutters to achieve continuous film making.

[0010] In an optional embodiment, the film making device further includes a feeding mechanism, which is suitable for conveying the pole piece material strip, and the feeding mechanism is arranged corresponding to the movable cutting table located at the first position.

[0011] In an optional embodiment, the mobile cutting table includes an adsorption platform and a driving structure, and the driving structure is suitable for driving the adsorption platform to move on the fixed table.

[0012] In an optional embodiment, the drive structure includes a linear motor.

[0013] Beneficial effect: The adsorption platform is driven by a linear motor, which realizes high-speed movement of the adsorption platform and greatly improves the film production efficiency.

[0014] In an optional embodiment, a material clamp is correspondingly provided on the movable cutting table, and the material clamp is suitable for fixing the end of the pole piece strip on the movable cutting table.

[0015] In an optional embodiment, the film-making device further includes a dust removal mechanism, and the dust removal mechanism is disposed on the fixed platform and located below the laser cutter.

[0016] In an optional embodiment, the laser cutter is fixedly disposed above the fixed table, and a galvanometer is disposed inside the laser cutter, and the galvanometer is suitable for adjusting the cutting position of the laser cutter; or, the laser cutter is movably disposed above the fixed table, and the laser cutter is suitable for moving within a predetermined interval and cutting the pole piece strip while the pole piece strip is moved by the movable cutting table.

[0017] In a second aspect, the utility model also provides a lamination device, comprising the above-mentioned lamination device.

[0018] In a third aspect, the utility model also provides a battery production line, including the above-mentioned stacking equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a structural schematic diagram of the slice making device of the embodiment of the utility model when the movable cutting table is in the first position;

[0021] Figure 2 for Figure 1 A is a partial enlarged schematic diagram;

[0022] Figure 3 It is a structural schematic diagram of the film-making device of the embodiment of the utility model when the movable cutting table is in the second position;

[0023] Figure 4 for Figure 3 A partial enlarged schematic diagram of B in the middle;

[0024] Figure 5 for Figure 1 A schematic diagram of the positional relationship of various structures of the film-making device;

[0025] Figure 6 for Figure 3 A schematic diagram of the positional relationship of various structures of the film-making device;

[0026] Figure 7 for Figure 1 Schematic diagram of the laser cutter of the film-making device when cutting the pole piece strip;

[0027] Figure 8 A schematic diagram of the cutting path of one of the laser cutters when cutting the first type of pole piece in an embodiment of the utility model;

[0028] Fig. 9 A schematic diagram of the cutting path of another laser cutter when cutting the first type of pole piece in an embodiment of the utility model;

[0029] Fig.10 A schematic diagram of the cutting path of one of the laser cutters when cutting the second type of pole piece in an embodiment of the utility model;

[0030] Fig.11 A schematic diagram of the cutting path of another laser cutter when cutting a second type of pole piece in an embodiment of the utility model;

[0031] Fig.12A schematic diagram of the cutting path of one of the laser cutters when cutting the third type of pole piece in an embodiment of the utility model;

[0032] Fig.13 This is a schematic diagram of the cutting path of another laser cutter when cutting the third type of pole piece in an embodiment of the utility model.

[0033] Description of reference numerals:

[0034] 10. Fixed table; 20. Laser cutter; 30. Mobile cutting table; 40. Material clamp; 50. Material feeding mechanism; 60. Dust removal mechanism. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0036] Combine the following Figures 1 to 9 , describing an embodiment of the utility model.

[0037] According to an embodiment of the utility model, on the one hand, a film making device is provided, including a fixed table 10, a laser cutter 20 and a movable cutting table 30. The laser cutter 20 is arranged above the fixed table 10 and at least two are arranged, and at least two laser cutters 20 are suitable for cutting the pole piece strip into one or more pole piece single pieces. The movable cutting table 30 is movably arranged on the fixed table 10, and the movable cutting table 30 is suitable for carrying and fixing the pole piece strip, and the movable cutting table 30 is suitable for driving the pole piece strip to move to the bottom of at least two laser cutters 20.

[0038] A movable cutting table 30 is provided to drive the movement of the pole piece strip, and at least two laser cutters 20 are used to complete the production of a single pole piece during the movement of the pole piece strip. Therefore, the cutting of the pole ear and the slitting of the pole piece strip can be completed in one process, thereby simplifying and integrating the production device, reducing space occupancy, and improving production efficiency.

[0039] The film making device of this embodiment refers to a device for cutting a pole piece strip into a plurality of pole piece single pieces. The pole piece strip may be a positive pole piece strip or a negative pole piece strip.

[0040] It is worth mentioning that please refer to Figure 8 and Fig. 9At least two laser cutters 20 are used to cut the pole piece strip of predetermined length on the movable cutting table 30 to form a number of pole piece single pieces. Therefore, at least two cutting paths corresponding to the at least two laser cutters 20 correspond to the outer contours of the several pole piece single pieces to be cut.

[0041] It should be noted that the fixed table 10 in this embodiment is fixed relative to the ground, that is, it does not move, and it mainly serves to carry the mobile cutting table 30. The mobile cutting table 30 is movably arranged on the fixed table 10, and the movement of the mobile cutting table 30 may include but is not limited to the following modes: reciprocating along a straight line; reciprocating along a specific trajectory (a curved trajectory, a combined trajectory of a straight line and a curve); circumferential movement on a plane; circumferential movement on a vertical plane, etc.

[0042] In one embodiment, Figures 1 to 7 As shown, two laser cutters 20 are provided, one of which is suitable for cutting the pole ear and the fillet on one side of the pole ear, and the other laser cutter 20 is suitable for slitting the pole sheet strip and cutting the fillet away from the side of the pole ear. The two laser cutters 20 can be used to complete the preparation of the pole ear, the cutting of the fillets on both sides, and the slitting of the pole sheet strip. The cutting path of each laser cutter 20 is reasonable, which further ensures the production efficiency.

[0043] It is worth noting that for the first type of pole piece, please refer to Figure 8 , one of the laser cutters 20 cuts along the cutting path of abcdefga, where de is the edge of the pole piece strip that does not need to be cut. Fig. 9 , another laser cutter 20 cuts along the cutting path of ABCDEDFGHIA, wherein the laser of the laser cutter 20 in the FG process does not act on the pole piece, thereby avoiding damage to the pole ear, which can be achieved by laser skip cutting or shading.

[0044] It is worth noting that for the second type of pole piece, please refer to Fig.10 , one of the laser cutters 20 cuts along the cutting path of abcdefga, where de is the edge of the pole piece strip that does not need to be cut. Fig.11 , another laser cutter 20 cuts along the cutting path of ABCDEDFGHIA, wherein the laser of the laser cutter 20 in the FG process does not act on the pole piece.

[0045] It is worth noting that for the third type of pole piece, please refer to Fig.12, one of the laser cutters 20 cuts along the cutting path of abcdefghia, where ef is the edge of the pole piece strip and does not need to be cut. Fig.13 , another laser cutter 20 cuts along the cutting path of ABCDEFGHFIJKLMA, wherein the laser of the laser cutter 20 does not act on the pole piece during the IJ process.

[0046] It should be noted that, in one embodiment, the laser cutter 20 is fixedly disposed above the fixed table 10, and a galvanometer is provided inside the laser cutter 20 to adjust the position of the laser spot, that is, to adjust the cutting position of the laser cutter 20. Therefore, when the mobile cutting table 30 moves from the first position to the second position, the laser cutter 20 can achieve continuous cutting of the electrode material strip, that is, the mobile cutting table 30 does not have to stop during the movement, thereby greatly improving the production efficiency.

[0047] Of course, in other alternative embodiments, the laser cutter 20 can also be movably arranged above the fixed table 10, and the laser cutter 20 is suitable for moving within a predetermined interval and cutting the pole piece strip while the mobile cutting table 30 drives the pole piece strip to move. Specifically, when the mobile cutting table 30 starts to move, the laser cutter 20 starts to move synchronously (that is, chase cutting), and after the laser cutter 20 moves to the end of the predetermined interval, it completes the cutting of a pole piece single piece; then the laser cutter 20 returns to the starting end of the predetermined interval and continues to move toward the end of the predetermined interval, thereby cutting the second pole piece single piece. So on and so forth, the cutting of all pole pieces is completed. The moving time of the laser cutter 20 within the predetermined interval is the tape running time for a pole piece single piece to be cut, and the moving distance of the laser cutter 20 within the predetermined interval is the tape running distance for a pole piece single piece to be cut. Further, in the process of the mobile cutting table 30 moving from the first position to the second position, the laser cutter 20 can also always chase cutting within the predetermined interval.

[0048] In one embodiment, Figures 1 to 6 As shown, the mobile cutting table 30 is arranged to be reciprocating along a straight line, and two laser cutters 20 are arranged at intervals along the moving path of the mobile cutting table 30. The mobile cutting table 30 has a first position and a second position on the fixed table 10. In the first position, the mobile cutting table 30 receives and fixes the pole piece strip, and the two laser cutters 20 cut the pole piece strip during the transfer from the first position to the second position. The mobile cutting table 30 is arranged to be reciprocating, and one mobile cutting table 30 is used in conjunction with two laser cutters 20 to achieve continuous film production.

[0049] It is worth noting that the two laser cutters 20 are started one after another, and the start time interval of the two laser cutters 20 is calculated according to the tape running speed of the pole piece tape (ie the moving speed of the moving cutting table 30 ) and the distance between the two laser cutters 20 .

[0050] It should be noted that when the mobile cutting table 30 moves to the second position, the electrode sheet strip on the mobile cutting table 30 can be cut into a number of electrode sheet single pieces; after the cutting of the electrode sheet strip is completed, the multiple electrode sheet single pieces are unloaded from the mobile cutting table 30, and then the mobile cutting table 30 returns from the second position to the first position for the next production.

[0051] In one embodiment, Figures 5 to 7 As shown, the film making device also includes a feeding mechanism 50, which is suitable for conveying the pole piece material strip, and the feeding mechanism 50 is arranged corresponding to the mobile cutting table 30 located at the first position. That is, when the mobile cutting table 30 is in the first position, the feeding mechanism 50 is used to convey the pole piece material strip to the mobile cutting table 30.

[0052] In one embodiment, the mobile cutting table 30 includes an adsorption platform and a driving structure, and the driving structure is suitable for driving the adsorption platform to move on the fixed table 10. The adsorption platform is used to adsorb and fix the pole piece strip to ensure the stability of the pole piece strip during the movement and cutting process, thereby ensuring the processing accuracy of the pole piece.

[0053] In one embodiment, the driving structure includes a linear motor. That is, the adsorption platform is driven by the linear motor, so that the adsorption platform can move at a high speed, which greatly improves the film production efficiency.

[0054] It is worth noting that the mobile cutting table 30 can reciprocate between the first position and the second position at high speed with almost no stopping (including only a short stop time for unloading and a switching stop time between the first position and the second position), thereby greatly improving the film production efficiency.

[0055] In one embodiment, Figures 1 to 7 As shown, a material clamp 40 is correspondingly provided on the movable cutting table 30 , and the material clamp 40 is suitable for fixing the end of the pole piece strip on the movable cutting table 30 .

[0056] It is worth noting that, through the cooperation of the material clamp 40 and the adsorption action of the adsorption platform, the electrode material strip delivered by the feeding mechanism 50 is fixed on the mobile cutting table 30, and the electrode material strip can be driven to move synchronously during the movement of the mobile cutting table 30. For details, please refer to Figure 5When the movable cutting table 30 is in the first position, the material clamp 40 is located on the front side of the feeding mechanism 50 (that is, the side close to the second position), and the material clamp 40 can fix the end of the pole piece strip; in the process of the movable cutting table 30 sliding from the first position to the second position, the pole piece strip is pulled out from the feeding mechanism 50 and moves synchronously with the movable cutting table 30.

[0057] Please note that Figure 7 After the laser cutter 20 has cut the first pole piece, the first pole piece is completely separated from the upstream pole piece strip. At this time, the material clamp 40 can no longer drive the upstream pole piece strip to move. However, due to the adsorption effect of the adsorption platform, the pole piece strip can still be fixed on the upper surface of the mobile cutting table 30 by negative pressure. That is, at this time, the pole piece strip moves synchronously with the mobile cutting table 30 through the adsorption force generated by the adsorption platform, ensuring that when the pole piece is cut off, the upstream pole piece strip can still keep moving synchronously with the mobile cutting table 30.

[0058] In one embodiment, Figures 1 to 6 As shown, the film making device further includes a dust removal mechanism 60, which is disposed on the fixing table 10 and is located below the laser cutter 20. When the laser cutter 20 cuts the pole piece strip, the dust generated is collected by the dust removal mechanism 60.

[0059] When using the film making device of this embodiment, first, the mobile cutting table 30 is in the first position, the feeding mechanism 50 conveys the pole piece strip to the mobile cutting table 30, and the end of the pole piece strip is fixed on the mobile cutting table 30 using the material clamp 40; then, the mobile cutting table 30 moves toward the second position, and drives the pole piece strip to move synchronously, the pole piece strip is laid on the mobile cutting table 30, and the mobile cutting table 30 adsorbs and fixes the pole piece strip; during the movement, the two laser cutters 20 respectively cut the pole piece strip according to the predetermined cutting path; when the mobile cutting table 30 moves to the second position, the film making is completed.

[0060] According to an embodiment of the present utility model, on the other hand, a lamination device is provided, comprising the above-mentioned lamination device.

[0061] According to an embodiment of the present invention, in another aspect, a battery production line is provided, comprising the above-mentioned lamination equipment.

[0062] Although the embodiments of the present invention are described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the appended claims.

Claims

1. A film-making device, characterized in that: include: Fixed table (10); A laser cutter (20), arranged above the fixing platform (10) and provided with at least two thereof, wherein the at least two laser cutters (20) are suitable for cutting the pole piece strip into one or more pole piece single pieces; The movable cutting table (30) is movably arranged on the fixed table (10), the movable cutting table (30) is suitable for carrying and fixing the pole piece strip, and the movable cutting table (30) is suitable for driving the pole piece strip to move below at least two of the laser cutters (20).

2. The film-making device according to claim 1, characterized in that: Two laser cutters (20) are provided, one of which is suitable for cutting the pole tab and the fillet located on one side of the pole tab, and the other of which is suitable for slitting the pole sheet strip and cutting the fillet away from the side of the pole tab.

3. The film making device according to claim 2, characterized in that: The movable cutting table (30) is arranged to be reciprocatingly movable along a straight line, and the two laser cutters (20) are arranged at intervals along the moving path of the movable cutting table (30). The movable cutting table (30) has a first position and a second position on the fixed table (10). In the first position, the movable cutting table (30) receives and fixes the pole piece strip, and in the process of transferring from the first position to the second position, the two laser cutters (20) cut the pole piece strip.

4. The film-making device according to claim 3, characterized in that: The film making device further comprises a feeding mechanism (50), wherein the feeding mechanism (50) is suitable for conveying the pole piece material strip, and the feeding mechanism (50) is arranged corresponding to the movable cutting table (30) located at the first position.

5. The film-making device according to any one of claims 1 to 4, characterized in that: The mobile cutting table (30) comprises an adsorption platform and a driving structure, wherein the driving structure is suitable for driving the adsorption platform to move on the fixed table (10).

6. The film-making device according to claim 5, characterized in that: The driving structure includes a linear motor.

7. The film-making device according to any one of claims 1 to 4, characterized in that: A material clamp (40) is correspondingly arranged on the movable cutting table (30), and the material clamp (40) is suitable for fixing the end of the pole piece strip on the movable cutting table (30).

8. The film-making device according to any one of claims 1 to 4, characterized in that: The film-making device further comprises a dust removal mechanism (60), wherein the dust removal mechanism (60) is arranged on the fixing platform (10) and is located below the laser cutter (20).

9. The film-making device according to any one of claims 1 to 4, characterized in that: The laser cutter (20) is fixedly arranged above the fixed platform (10), and a galvanometer is arranged inside the laser cutter (20), and the galvanometer is suitable for adjusting the cutting position of the laser cutter (20); or, The laser cutter (20) is movably arranged above the fixed platform (10), and the laser cutter (20) is suitable for moving within a predetermined interval and cutting the pole piece strip when the pole piece strip is driven to move by the movable cutting platform (30).

10. A lamination device, characterized in that: A film-making device comprising the film-making device according to any one of claims 1 to 9.

11. A battery production line, characterized in that: Includes the lamination device as claimed in claim 10.

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