Piece production device, lamination equipment and battery production system

Abstract

The invention relates to the technical field of battery manufacturing, and discloses a piece production device, a piece stacking device and a battery production system.The piece production device comprises a cutting mechanism, a piece stacking mechanism and a piece stacking mechanism, the cutting mechanism comprises an upper cutter and a lower cutter which are oppositely arranged, and the cutting mechanism has a cutting state that the upper cutter and the lower cutter get close to each other and an avoiding state that the upper cutter and the lower cutter get away from each other; and the flaking table comprises a plurality of adsorption platforms which are arranged at intervals, a cutting channel is formed between every two adjacent adsorption platforms, in the cutting state, the upper cutter and the lower cutter are oppositely arranged with the cutting channel, and in the avoiding state, the adsorption platforms move and pass through the space between the upper cutter and the lower cutter. According to the pole piece production device, the movable pole piece production table is arranged, the adsorption platform drives the pole piece material belt to move in the moving process, the pole piece material belt is cut off at the cutting channel of the pole piece production table through the upper cutter and the lower cutter so that the pole piece material belt can be cut into a plurality of pole piece single pieces, and the pole piece material belt does not need to be transferred to the pole piece production table through a transfer device; and the tabletting process is simplified, the tabletting time is saved, and the overall production takt and the tabletting efficiency are ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of battery manufacturing, and in particular to a sheet making device, a sheet stacking device and a battery production system. Background Art

[0002] In the battery manufacturing process, the battery cell can be formed by lamination. The laminated battery cell is formed by laminating the positive electrode sheet, the negative electrode sheet and the separator. Therefore, the lamination process is an indispensable process in the lamination battery cell processing. In the prior art, the lamination table is usually fixed. Therefore, before cutting the lamination, the pole sheet strip needs to be transferred to the lamination table and then cut. The transfer process of the pole sheet strip increases the time consumption of lamination, affecting the overall production rhythm and lamination efficiency. Summary of the invention

[0003] In view of this, the present invention provides a film making device, a laminating device and a battery production system to solve the problem of low film making efficiency of the existing film making device.

[0004] In the first aspect, the present invention provides a film-making device, comprising: a cutting mechanism, comprising an upper knife and a lower knife arranged opposite to each other, the upper knife and the lower knife being movably arranged along a first direction, the cutting mechanism having a cutting state in which the upper knife and the lower knife are close to each other, and an avoiding state in which the upper knife and the lower knife are away from each other; a film-making table, movably arranged between the upper knife and the lower knife, the film-making table comprising a plurality of adsorption platforms arranged at intervals, a cutting channel being formed between adjacent adsorption platforms, in the cutting state, the upper knife and the lower knife are arranged opposite to the cutting channel, and in the avoiding state, the adsorption platform moves along the second direction to pass between the upper knife and the lower knife.

[0005] In an optional embodiment, the film-making device also includes a linear drive mechanism, which is suitable for driving the film-making table to move back and forth in a straight line, and each of the cutting channels is arranged opposite to the upper knife and the lower knife in sequence; or, the film-making device also includes a circulating drive mechanism, which is suitable for driving a plurality of the adsorption platforms to move in a circumferential direction, and each of the cutting channels is arranged opposite to the upper knife and the lower knife in sequence.

[0006] In an optional embodiment, the linear drive mechanism includes a linear fixed part and a linear motion part, the linear fixed part is fixedly arranged at a predetermined installation position, the linear fixed part is extended along the second direction, and the linear motion part is connected to the linear fixed part and is movably arranged along the second direction; the film-making table also includes a connecting arm, the connecting arm is connected to several of the adsorption platforms at the same time, and the linear motion part is connected to the connecting arm; or, there are several linear motion parts arranged along the second direction, and several of the adsorption platforms are respectively connected to several of the linear motion parts.

[0007] In an optional embodiment, the circulation driving mechanism includes a circulation fixed part and a circulation moving part, the circulation fixed part is fixedly arranged at a predetermined installation position, the circulation fixed part is circumferentially enclosed, the circulation moving part is connected to the circulation fixed part and is movably arranged circumferentially, and there are several circulation moving parts arranged circumferentially, and several adsorption platforms are respectively connected to several circulation moving parts.

[0008] In an optional embodiment, one upper knife is provided, and one lower knife is provided corresponding to the upper knife; or, along the moving direction of the adsorption platform, several upper knives are provided at intervals, and several upper knives are respectively provided corresponding to several cutting channels, and several lower knives are provided corresponding to several upper knives.

[0009] In an optional embodiment, the cutting mechanism also includes a knife body driving assembly for driving the upper knife and the lower knife. Under the drive of the knife body driving assembly, the upper knife, the lower knife and the pole piece strip to be cut intersect at a cutting position where the cutting channel intersects the connecting line between the upper knife and the lower knife.

[0010] In an optional embodiment, the knife body drive assembly includes an upper knife drive structure and a lower knife drive structure, the upper knife drive structure is transmission connected to the upper knife, and the lower knife drive structure is transmission connected to the lower knife; or, the knife body drive assembly is transmission connected to both the upper knife and the lower knife, and is suitable for driving the upper knife and the lower knife to move in opposite directions at the same time.

[0011] In an optional embodiment, the cutting mechanism also includes a knife holder, which includes a main body, the first end of the upper knife is connected to the main body, and the second end of the upper knife is arranged in a direction away from the main body so that the upper knife forms a cantilever structure, and the first end of the lower knife is connected to the main body, and the second end of the lower knife is arranged in a direction away from the main body so that the lower knife forms a cantilever structure.

[0012] In an optional embodiment, the tool holder further comprises an upper tool holder, which is arranged on a side of the upper knife away from the lower knife, the first end of the upper tool holder is connected to the main body, the second end of the upper tool holder is arranged in a direction away from the main body, the first end of the upper knife is transmission-connected to the upper knife driving structure, and an upper guide structure is arranged between the second end of the upper knife and the second end of the upper tool holder; and / or, the tool holder further comprises a lower tool holder, which is arranged on a side of the lower knife away from the upper knife, the first end of the lower tool holder is connected to the main body, the second end of the lower tool holder is arranged in a direction away from the main body, the first end of the lower knife is transmission-connected to the lower knife driving structure, and a lower guide structure is arranged between the second end of the lower knife and the second end of the lower tool holder.

[0013] In an optional embodiment, the main body includes a frame, a guide fixed structure and a guide movable structure, the guide fixed structure is connected to the frame, the guide movable structure is movably arranged along the guide fixed structure, two guide movable structures are arranged on the guide fixed structure at intervals, and the upper knife and the lower knife are respectively connected to the two guide movable structures.

[0014] In an optional embodiment, a plurality of the guide fixed structures are arranged at intervals on the frame, and each of the guide fixed structures is provided with two guide movable structures, and the upper knife is simultaneously connected to the guide movable structure located above each of the guide fixed structures, and the lower knife is simultaneously connected to the guide movable structure located below each of the guide fixed structures;

[0015] A plurality of the guide fixing structures and the upper guide structure and / or the lower guide structure are arranged along the same straight line; or, a plurality of the guide fixing structures and the upper guide structure and / or the lower guide structure are arranged in a triangle.

[0016] In an optional embodiment, a guide matching structure is arranged between the upper knife and the lower knife, one end of the guide matching structure is connected to the second end of the upper knife, and the other end of the guide matching structure is connected to the second end of the lower knife. In the cutting state, the guide matching structure is arranged in a matching manner, and in the avoidance state, the guide matching structure is arranged in a separated manner.

[0017] In an optional embodiment, the film-making device further includes a tail material lifting and placing mechanism, and the tail material lifting and placing mechanism is arranged above the film-making table and close to the upper knife.

[0018] In an optional embodiment, the tail material lifting and placing mechanism includes a lifting drive structure and a suction cup, and the lifting drive structure is suitable for driving the suction cup to approach or move away from the adsorption platform; the suction cup is suitable for adsorbing the pole piece strip on at least one of the adsorption platforms, and the suction cup is formed with a through opening allowing the upper knife to pass through.

[0019] In an optional embodiment, the cutting mechanism also includes a knife holder, the knife body drive assembly includes a knife holder drive structure and a knife body drive structure, the upper knife, the lower knife and the knife body drive structure are all arranged on the knife holder, the knife holder drive structure is suitable for driving the knife holder so that one of the upper knife and the lower knife reaches the cutting position, and the knife body drive structure is suitable for driving the other of the upper knife and the lower knife to reach the cutting position.

[0020] In an optional embodiment, the film-making device also includes a fixed seat, the tool holder is slidably connected to the fixed seat, the tool holder driving structure includes a linear drive part and a movable seat, the movable seat is slidably arranged on the fixed seat and arranged opposite to the tool holder, the linear drive part is transmission-connected to the movable seat, a side of the tool holder facing the movable seat and / or a side of the movable seat facing the tool holder is an inclined surface, the inclined surface is inclined relative to the driving direction of the linear drive part and the arrangement direction of the upper knife and the lower knife, and a side of the tool holder facing the movable seat and a side of the movable seat facing the tool holder are slidably connected.

[0021] In an optional embodiment, the knife body drive assembly includes a servo motor and a bidirectional screw, the upper knife and the lower knife are respectively connected to the bidirectional threads on the bidirectional screw, and the servo motor is suitable for driving the bidirectional screw to rotate so that the upper knife and the lower knife move in opposite directions.

[0022] In an optional embodiment, the knife body driving assembly includes a servo motor, an upper knife cam, an upper knife connecting rod structure, a lower knife cam and a lower knife connecting rod structure, the servo motor is transmission-connected to the upper knife cam and the lower knife cam, one end of the upper knife connecting rod structure is movably connected to the peripheral wall of the upper knife cam, and the other end of the upper knife connecting rod structure is connected to the upper knife, one end of the lower knife connecting rod structure is movably connected to the peripheral wall of the lower knife cam, and the other end of the lower knife connecting rod structure is connected to the lower knife.

[0023] In an optional embodiment, the knife body drive assembly is suitable for driving the upper knife and the lower knife to move horizontally or rotate; and / or, the upper knife and the lower knife are suitable for shearing or punching the pole piece strip to be cut at the cutting position.

[0024] In an optional embodiment, the film-making device further comprises a dust collection mechanism, wherein the dust collection mechanism has a dust collection position close to the cutting channel;

[0025] The dust collecting mechanism comprises an upper dust collecting structure having an upper dust collecting position; and / or, the dust collecting mechanism comprises a lower dust collecting structure having a lower dust collecting position.

[0026] In an optional embodiment, the upper dust collecting structure is fixed to the upper dust collecting position, or the upper dust collecting structure is movably arranged to be close to or away from the upper dust collecting position; and / or,

[0027] The lower dust collecting structure is fixed to the lower dust collecting position, or the lower dust collecting structure is movably arranged to be close to or away from the lower dust collecting position.

[0028] In an optional embodiment, the upper dust collecting structure is connected to the upper knife, or the dust collecting mechanism further includes an upper dust collecting drive structure, and the upper dust collecting drive structure is drivingly connected to the upper dust collecting structure; and / or,

[0029] The lower dust collecting structure is connected to the lower knife, or the dust collecting mechanism further includes a lower dust collecting drive structure, and the lower dust collecting drive structure is drivingly connected to the lower dust collecting structure.

[0030] In an optional embodiment, the upper dust collecting structure reaches the upper dust collecting position at the same time as the upper knife and the lower knife reach the cutting position, and the upper dust collecting structure leaves the upper dust collecting position at the same time as the upper knife and the lower knife leave the cutting position; and / or,

[0031] When the upper knife and the lower knife arrive at the cutting position, the lower dust collecting structure arrives at the lower dust collecting position, and when the upper knife and the lower knife leave the cutting position, the lower dust collecting structure leaves the lower dust collecting position.

[0032] In an optional embodiment, the upper dust collecting structure arrives at the upper dust collecting position before the upper knife and the lower knife arrive at the cutting position, and / or the upper dust collecting structure leaves the upper dust collecting position later than the upper knife and the lower knife leave the cutting position; and / or,

[0033] The lower dust collecting structure arrives at the lower dust collecting position before the upper knife and the lower knife arrive at the cutting position, and / or the lower dust collecting structure leaves the lower dust collecting position after the upper knife and the lower knife leave the cutting position.

[0034] In an optional embodiment, at the cutting position, along the second direction, the upper knife and the lower knife have upper and lower abutment surfaces that are arranged opposite to each other; and the dust collecting mechanism is arranged at least corresponding to one side of the upper and lower abutment surfaces.

[0035] In an optional embodiment, the dust collecting mechanism includes an upper dust collecting part and a lower dust collecting part, the upper dust collecting part is arranged at least corresponding to one side of the upper abutting surface, and the lower dust collecting part is arranged at least corresponding to one side of the lower abutting surface; or,

[0036] The dust collecting mechanism includes a dust suction part and an air blowing part, at least one of the dust suction part and the air blowing part is arranged on one side of the upper abutting surface, at least one of the dust suction part and the air blowing part is arranged on one side of the lower abutting surface, and the dust suction part is arranged opposite to the air blowing part along a first direction.

[0037] In an optional embodiment, a blowing hole is provided on one side of the adsorption platform facing the cutting channel; and / or the adsorption platform has an adsorption surface for adsorbing the pole piece strip, the adsorption surface is provided with adsorption holes and blowing holes, and along the second direction, the blowing holes are located on opposite sides of the adsorption holes.

[0038] In an optional embodiment, the tablet making device further comprises a positive pressure supply mechanism, the adsorption platform is provided with a positive pressure channel, the positive pressure channel is connected to the blowing hole, and the positive pressure supply mechanism is suitable for providing positive pressure to the positive pressure channel;

[0039] The positive pressure supply mechanism moves synchronously with the adsorption platform; or, the positive pressure supply mechanism is arranged on the lower knife, so that when the lower knife moves along the first direction, the positive pressure supply mechanism is connected to or separated from the positive pressure channel.

[0040] In a second aspect, the present invention further provides a lamination device, comprising: a lamination table; the above-mentioned production device, arranged on the side of the lamination table; and a pole piece conveying device, suitable for conveying pole pieces cut on the production table to the lamination table.

[0041] In a third aspect, the present invention further provides a battery production system, including the above-mentioned film making device, or including the above-mentioned lamination equipment.

[0042] The technical solution of this application has the following advantages:

[0043] By setting up a movable production table, the adsorption platform can drive the pole piece material strip to move during the movement, and the pole piece material strip is cut at the cutting channel of the production table by the upper and lower knives, so as to cut the pole piece material strip into several pole piece single pieces for subsequent stacking. Therefore, there is no need to transfer the pole piece material strip to the production table through a transfer device, which simplifies the production process, saves production time, and ensures the overall production rhythm and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the specific implementation methods of the present invention 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 present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 It is a schematic diagram of the overall structure of a film-making device according to an embodiment of the present invention;

[0046] Figure 2 for Figure 1 Front view of the film making device shown

[0047] Figure 3 for Figure 1 A top view of the film-making device shown;

[0048] Figure 4 for Figure 1 A schematic structural diagram of a film-making table of a film-making device shown;

[0049] Figure 5 A schematic diagram of the structure of another film-making table and a circulating drive mechanism according to an embodiment of the present invention;

[0050] Figure 6 It is a structural schematic diagram of the tail material lifting and placing mechanism according to an embodiment of the present invention;

[0051] Figure 7 It is a structural schematic diagram of a first implementation mode of a cutting mechanism according to an embodiment of the present invention;

[0052] Figure 8 for Figure 7 A front view of the cutting mechanism shown;

[0053] Fig. 9 for Figure 7 A top view of the cutting mechanism shown;

[0054] Fig.10 A schematic structural diagram of a second implementation of the cutting mechanism of an embodiment of the present invention;

[0055] Fig.11for Fig.10 a rear view of the cutting mechanism shown;

[0056] Fig.12 for Fig.10 A left side view of the cutting mechanism shown;

[0057] Fig.13 for Fig.10 A top view of the cutting mechanism shown;

[0058] Fig.14 It is a schematic diagram of the overall structure of another film-making device according to an embodiment of the present invention;

[0059] Fig.15 for Fig.14 A left side view of the film making device shown;

[0060] Fig.16 A schematic diagram of an arrangement of a guide fixing structure according to an embodiment of the present invention;

[0061] Fig.17 A schematic diagram of another arrangement of the guide fixing structure according to an embodiment of the present invention;

[0062] Fig.18 It is a structural schematic diagram of a third implementation mode of the cutting mechanism of an embodiment of the present invention;

[0063] Fig.19 for Fig.18 a rear view of the cutting mechanism shown;

[0064] Fig. 20 for Fig.18 A right side view of the cutting mechanism shown;

[0065] Fig.21 for Fig.19 A top view of the cutting mechanism shown;

[0066] Fig. 22 This is a schematic structural diagram of a fourth embodiment of a cutting mechanism according to an embodiment of the present invention, in which the guide fixing structure, the guide moving structure and the guide matching structure are a ball bushing guide assembly;

[0067] Fig.23 for Fig. 22 A front view of the cutting mechanism shown;

[0068] Fig.24 This is a schematic structural diagram of a fourth embodiment of a cutting mechanism according to an embodiment of the present invention, in which the guide fixing structure, the guide moving structure and the guide matching structure are guide rail, guide block and guide assembly;

[0069] Fig.25 for Fig.24 a rear view of the cutting mechanism shown;

[0070] Fig.26 for Fig.24 A right side view of the cutting mechanism shown;

[0071] Fig. 27 for Fig.25 A top view of the cutting mechanism shown;

[0072] Fig.28 It is a schematic structural diagram of an upper knife, a lower knife, an upper dust collecting structure, and a lower dust collecting structure according to an embodiment of the present invention;

[0073] Fig.29 It is a schematic diagram of the overall structure of another film-making device according to an embodiment of the present invention;

[0074] Fig.30 for Fig.29 A front view of the film-making device shown;

[0075] Fig.31 for Fig.29 A left side view of the film making device shown;

[0076] Fig.32 for Fig.29 A top view of the film-making device shown;

[0077] Fig.33 A schematic structural diagram of an alternative embodiment of the fourth embodiment of the cutting mechanism of the embodiment of the present invention;

[0078] Fig.34 for Fig.33 A front view of the cutting mechanism shown;

[0079] Fig.35 for Fig.33 A left side view of the cutting mechanism shown;

[0080] Fig.36 for Fig.33 A top view of the cutting mechanism shown;

[0081] Fig.37 It is a structural schematic diagram of an upper knife, a lower knife, an adsorption platform and a dust collection mechanism according to an embodiment of the present invention;

[0082] Fig.38 It is a structural schematic diagram of an adsorption platform according to an embodiment of the present invention;

[0083] Fig.39 for Fig.38 A top view of the adsorption platform is shown.

[0084] Description of reference numerals:

[0085] 1. Cutting mechanism; 11. Upper knife; 111. Upper knife body; 112. Upper knife seat; 113. Upper abutting surface; 12. Lower knife; 121. Lower knife body; 122. Lower knife seat; 123. Lower abutting surface; 13. Knife holder; 131. Main body; 1311. Holder; 1312. Guide fixed structure; 1313. Guide movable structure; 132. Upper knife holder; 133. Upper guide structure; 134. Lower knife holder; 1 35. Lower guide structure; 14. Tool holder drive structure; 141. Linear drive unit; 142. Moving seat; 15. Upper tool drive structure; 151. Upper servo motor; 152. Upper screw rod; 153. Upper connecting block; 16. Lower tool drive structure; 161. Lower servo motor; 162. Lower screw rod; 163. Lower connecting block; 17. Guide matching structure; 18. Tool body drive structure; 19. Servo motor; 20. Bidirectional screw; 101, upper knife cam; 102, upper knife connecting rod structure; 103, lower knife cam; 104, lower knife connecting rod structure; 105, cam follower; 106, guide rail; 2, film making table; 21, adsorption platform; 211, blowing hole; 212, adsorption surface; 213, adsorption hole; 22, cutting channel; 23, connecting arm; 3, linear drive mechanism; 31, linear fixed part; 32, linear motion part; 4, circulation drive mechanism; 41, circulation fixed part; 42, circulation motion part; 5, fixed seat; 6, dust collecting mechanism; 61, upper dust collecting structure; 62, lower dust collecting structure; 63, dust suction part; 64, blowing part; 7, tail material lifting and placing mechanism; 71, lifting and lowering drive structure; 72, suction cup; 721, connecting part; 722, suction part; 8, mounting seat; 100, pole piece strip; 200, pole piece single piece. DETAILED DESCRIPTION

[0086] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0087] Combine the following Figures 1 to 39 , describing an embodiment of the present invention.

[0088] According to an embodiment of the present invention, on the one hand, a film-making device is provided, comprising: a cutting mechanism 1 and a film-making table 2. The cutting mechanism 1 comprises an upper knife 11 and a lower knife 12 arranged opposite to each other, and the upper knife 11 and the lower knife 12 are movably arranged along a first direction, and the cutting mechanism 1 has a cutting state in which the upper knife 11 and the lower knife 12 are close to each other, and an avoidance state in which the upper knife 11 and the lower knife 12 are away from each other. The film-making table 2 is movably arranged between the upper knife 11 and the lower knife 12, and the film-making table 2 comprises a plurality of adsorption platforms 21 arranged at intervals, and a cutting channel 22 is formed between adjacent adsorption platforms 21. In the cutting state, the upper knife 11 and the lower knife 12 are arranged opposite to the cutting channel 22; in the avoidance state, the adsorption platform 21 moves along the second direction and passes between the upper knife 11 and the lower knife 12.

[0089] The production device of this embodiment is applied, and a movable production table 2 is set up, so that the adsorption platform 21 drives the pole piece strip 100 to move during the movement, and the pole piece strip 100 is cut at the cutting channel 22 of the production table 2 by the upper knife 11 and the lower knife 12, so as to cut the pole piece strip 100 into a plurality of pole piece single pieces 200 for subsequent lamination. Therefore, there is no need to transfer the pole piece strip 100 to the production table 2 by a transfer device, which simplifies the production process, saves production time, and ensures the overall production rhythm and production efficiency.

[0090] It is worth mentioning that please refer to Figure 4 The production table 2 forms a plurality of cutting channels 22 through a plurality of adsorption platforms 21 arranged at intervals. During the movement of the production table 2, the plurality of cutting channels 22 are arranged opposite to the upper knife 11 and the lower knife 12 in sequence. Thus, the upper knife 11 and the lower knife 12 are used to cut the electrode strip 100 in sequence at the plurality of cutting channels 22 to form a plurality of electrode single pieces 200.

[0091] When the cutting channel 22 is arranged opposite to the upper knife 11 and the lower knife 12, the upper knife 11 and the lower knife 12 are close to each other to cut the pole piece strip 100 at the cutting channel 22; after the cutting of the pole piece strip 100 at the cutting channel 22 is completed, the upper knife 11 and the lower knife 12 are moved away from each other, and the production table 2 moves so that the cutting channel 22 at the rear is moved to be arranged opposite to the upper knife 11 and the lower knife 12; repeat the above steps to complete the cutting of the pole piece strip 100 at several cutting channels 22 in turn.

[0092] It is worth noting that the cutting channel includes a first region located between adjacent adsorption platforms and a second region extending from the first region along a first direction.

[0093] In one embodiment, Figures 1 to 3As shown, the film-making device further includes a linear drive mechanism 3, which is suitable for driving the film-making table 2 to move back and forth along a straight line, and making each cutting channel 22 arranged opposite to the upper knife 11 and the lower knife 12 in sequence. Specifically, in this embodiment, the linear drive mechanism 3 drives the film-making table 2 to move back and forth in the horizontal direction. Figure 2 and Figure 3 The film-making table 2 can move back and forth in the left and right directions. Figure 2 and Figure 3 At this time, the production table 2 is at the right extreme position, that is, the position where the cutting is completed. It can be understood that when the production table 2 is at the left extreme position, the end of the pole piece strip 100 is adsorbed by the adsorption platform 21; when the production table 2 moves to the right, it drives the pole piece strip 100 to move to the right, and the unwinding roller of the pole piece strip 100 unwinds so that the pole piece strip 100 is laid on several adsorption platforms 21 in sequence, and the pole piece strip 100 is cut by the upper knife 11 and the lower knife 12 at the position of the cutting channel 22; when the production table 2 reaches the right extreme position, this cutting is completed; after that, the production table 2 moves to the left to reset and perform the next cutting.

[0094] That is, in this embodiment, when the production table 2 drives the pole piece material strip 100 to move, the unwinding roller unwinds synchronously, and when the production table 2 moves to a predetermined position, the upper knife 11 and the lower knife 12 cut the pole piece material strip 100 at the corresponding cutting channel 22. Of course, in other alternative embodiments, the pole piece material strip 100 can also be spread on a plurality of adsorption platforms 21 first, and then the production table 2 is moved, and when the production table 2 moves to a predetermined position, the upper knife 11 and the lower knife 12 cut the pole piece material strip 100 at the corresponding cutting channel 22.

[0095] In one embodiment, Figures 1 to 3 As shown, the linear drive mechanism 3 includes a linear fixed portion 31 and a linear motion portion 32, the linear fixed portion 31 is fixedly arranged at a predetermined installation position, the linear fixed portion 31 is extended along the second direction, and the linear motion portion 32 is connected to the linear fixed portion 31 and is movably arranged along the second direction. In this embodiment, the film-making table 2 also includes a connecting arm 23, the connecting arm 23 is connected to a plurality of adsorption platforms 21 at the same time, and the linear motion portion 32 is connected to the connecting arm 23. As an alternative embodiment, a plurality of linear motion portions 32 can also be arranged along the second direction, and a plurality of adsorption platforms 21 are respectively connected to a plurality of linear motion portions 32.

[0096] Specifically, in this embodiment, the linear drive mechanism 3 is a linear motor, and accordingly, the linear fixed part 31 is the stator of the linear motor, and the linear motion part 32 is the mover of the linear motor. As an alternative embodiment, the linear drive mechanism 3 can also be a motor and a screw assembly, in which case the linear fixed part 31 is the screw, and the linear motion part 32 is a slider threadedly connected to the screw; the linear drive mechanism 3 can also be a magnetic suspension mechanism, and accordingly, the linear fixed part 31 is the stator of the magnetic suspension mechanism, and the linear motion part 32 is the mover of the magnetic suspension mechanism.

[0097] It is worth noting that in the related art, a hardware mold is used to cut the pole piece strip 100 to form a pole piece single piece 200 of a predetermined size. Specifically, the pole piece strip 100 is conveyed to the hardware mold by roller conveying for cutting, and then the pole piece single piece 200 is conveyed toward the laminating machine by a negative pressure belt conveyor. However, the conveying method of the negative pressure belt conveyor has the disadvantages of slipping, deviation, and weak adsorption of the pole piece, which leads to the need for secondary positioning of the pole piece before lamination, and the equipment structure is complex and the cost is high. In this embodiment, the linear motor drives the film making table 2 to move back and forth, which has higher position accuracy. Therefore, the cut pole piece single piece 200 can be directly used for lamination without secondary positioning, which simplifies the lamination process and the overall equipment, reduces the equipment cost, and improves the lamination efficiency.

[0098] In one embodiment, Figures 1 to 3 As shown, the film-making device further includes a mounting seat 8 , and the linear drive mechanism 3 is arranged on the mounting seat 8 .

[0099] Of course, as an alternative implementation, Figure 5 and Fig.29 As shown, the film making device may also include a circulation drive mechanism 4, which is suitable for driving a plurality of adsorption platforms 21 to circumferentially move in a circular manner, and for each cutting channel 22 to be arranged opposite to the upper knife 11 and the lower knife 12 in sequence. Figure 29 to Figure 32 As shown, the circulation driving mechanism 4 includes a circulation fixing part 41 and a circulation moving part 42. The circulation fixing part 41 is fixedly arranged at a predetermined installation position, and the circulation fixing part 41 is arranged to be enclosed along the circumferential direction. The circulation moving part 42 is connected to the circulation fixing part 41 and is movably arranged along the circumferential direction. There are several circulation moving parts 42 arranged along the circumferential direction, and several adsorption platforms 21 are respectively connected to several circulation moving parts 42.

[0100] It is worth mentioning that please refer to Fig.30 and Fig.32, on the upper layer of the circulating fixed part 41, the circulating motion part 42 moves from left to right, and on the left side of the cutting mechanism 1, at least two adsorption platforms 21 are always maintained for adsorbing the end of the pole piece strip 100 to drive the pole piece strip 100 to move to the right; when the cutting is completed, the circulating motion part 42 drives the adsorption platform 21 to move to the right side of the cutting mechanism 1, and several adsorption platforms 21 located on the right side of the cutting mechanism 1 are driven by the corresponding several circulating motion parts 42 to change the distance, so that the distance between adjacent adsorption platforms 21 becomes larger, so that in the subsequent stacking process, the pole piece handling device can directly transport the pole piece single pieces 200 on the several adsorption platforms 21 after the distance change for stacking without changing the distance again.

[0101] Furthermore, the circulating driving mechanism 4 can be a circulating belt conveyor, a circulating conveyor chain or other structures, and correspondingly, the circulating moving part 42 is a belt, a chain, etc., and the circulating fixed part 41 is a support frame for supporting the belt or chain, etc.; the circulating driving mechanism 4 can also be a magnetic levitation mechanism, and correspondingly, the circulating fixed part 41 is the stator of the magnetic levitation mechanism, and the circulating moving part 42 is the mover of the magnetic levitation mechanism.

[0102] In one embodiment, Figure 8 As shown, along the moving direction of the adsorption platform 21, a plurality of upper knives 11 are arranged at intervals, and the plurality of upper knives 11 are respectively arranged corresponding to the plurality of cutting channels 22, and a plurality of lower knives 12 are also arranged corresponding to the plurality of upper knives 11. In this way, in one cutting action of the upper knives 11 and the lower knives 12, the electrode strips 100 at the plurality of cutting channels 22 can be cut by the plurality of upper knives 11 and the plurality of lower knives 12 at the same time, thereby improving the cutting efficiency.

[0103] Specifically, in this embodiment, if Figure 8 As shown, two upper knives 11 are provided, and two lower knives 12 are provided corresponding to the upper knives 11. The two upper knives 11 and the two lower knives 12 simultaneously cut the pole piece strip 100 at two adjacent cutting channels 22, that is, when cutting, the two upper knives 11 are provided on opposite sides of the corresponding adsorption platform 21, and the two lower knives 12 are provided on opposite sides of the adsorption platform 21. Therefore, the distance between the two upper knives 11 is the width of a pole piece 200, and the distance between the two lower knives 12 is also the width of a pole piece 200.

[0104] Of course, in other alternative embodiments, two upper knives 11 are provided, and two lower knives 12 are provided corresponding to the upper knives 11. The two upper knives 11 are not provided corresponding to two adjacent cutting channels 22, that is, at least one cutting channel 22 is provided between the two cutting channels 22 corresponding to the two upper knives 11, and the two lower knives 12 are provided corresponding to the two upper knives 11. For example, during cutting, there is another cutting channel 22 provided between the two cutting channels 22 corresponding to the two upper knives 11. The cutting process is described below by way of example. Please refer to Figure 4 During this cutting, the first upper knife 11 cuts the cutting channel 22 between the first adsorption platform 21 and the second adsorption platform 21, and the second upper knife 11 cuts the cutting channel 22 between the third adsorption platform 21 and the fourth adsorption platform 21; during the next cutting, the first upper knife 11 cuts the cutting channel 22 between the second adsorption platform 21 and the third adsorption platform 21, and the second upper knife 11 cuts the cutting channel 22 between the fourth adsorption platform 21 and the fifth adsorption platform 21.

[0105] As an alternative embodiment, one upper knife 11 is provided, and one lower knife 12 is provided corresponding to the upper knife 11. Therefore, by using one upper knife 11 and one lower knife 12, only one pole piece strip 100 at one cutting channel 22 is cut each time.

[0106] In one embodiment, Figures 1 to 3 As shown, the film-making device further includes a tail material lifting and placing mechanism 7, which is arranged above the film-making table 2 and close to the upper knife 11. After the cutting of the pole piece strip 100 on the film-making table 2 is completed, the tail material lifting and placing mechanism 7 is used to lift the end of the pole piece strip 100 on the film-making table 2, and then the film-making table 2 can be moved and reset, and then the end of the pole piece strip 100 is placed on the adsorption platform 21 by the tail material lifting and placing mechanism 7, and is adsorbed and fixed by the adsorption platform 21, and the next cutting can be carried out.

[0107] It is worth mentioning that please refer to Figure 2 and Figure 3 , the production table 2 is in the right extreme position, that is, the position where the cutting is completed. At this time, the end of the pole piece strip 100 formed after the cutting is completed is lifted by the tail material lifting and placing mechanism 7 (that is, away from the production table 2). After that, the production table 2 can move to the left and reset to the left extreme position. Then, the tail material lifting and placing mechanism 7 places the end of the pole piece strip 100 on the corresponding adsorption platform 21 for adsorption and fixation. The production table 2 can drive the pole piece strip 100 to move to the right again for the next cutting.

[0108] In one embodiment, Figure 6As shown, the tail material lifting and placing mechanism 7 includes a lifting drive structure 71 and a suction cup 72, and the lifting drive structure 71 is suitable for driving the suction cup 72 to approach or move away from the adsorption platform 21. When it is necessary to lift the pole piece material strip 100 on the adsorption platform 21, the lifting drive structure 71 drives the suction cup 72 to descend to approach the adsorption platform 21, the adsorption platform 21 cancels the adsorption of the pole piece material strip 100, the suction cup 72 adsorbs the pole piece material strip 100, the lifting drive structure 71 drives the suction cup 72 to rise, and drives the pole piece material strip 100 away from the adsorption platform 21; when it is necessary to place the pole piece material strip 100 on the adsorption platform 21, the lifting drive structure 71 drives the suction cup 72 to descend to approach the adsorption platform 21, the suction cup 72 cancels the adsorption of the pole piece material strip 100, the adsorption platform 21 adsorbs the pole piece material strip 100 to adsorb and fix the pole piece material strip 100, and the lifting drive structure 71 drives the suction cup 72 to rise away from the pole piece material strip 100.

[0109] In one embodiment, the suction cup 72 is suitable for adsorbing the pole piece strip 100 on at least one adsorption platform 21, and the suction cup 72 is formed with a through hole for allowing the upper knife 11 to pass through. Figure 6 As shown, the suction cup 72 includes a connecting portion 721 and two suction portions 722. The two suction portions 722 are spaced apart from the connecting portion 721 to form the above-mentioned through opening. The upper knife 11 is arranged between the two suction portions 722. The two suction portions 722 are suitable for being arranged opposite to the two adsorption platforms 21 respectively.

[0110] Of course, in other alternative embodiments, the number of the suction parts 722 can be specifically set according to actual needs, and can be one or more, such as three, four, etc.

[0111] Specifically, in this embodiment, two upper knives 11 are provided, and the two upper knives 11 are both provided between the two suction portions 722, that is, see Figure 3 , the two upper knives 11 are arranged at intervals along the left-right direction, one of the suction parts 722 is arranged on the left side of the upper knife 11 on the left, and the other suction part 722 is arranged on the right side of the upper knife 11 on the right. Further, when the two upper knives 11 are arranged opposite to two adjacent cutting channels 22, the two suction parts 722 are arranged on the left and right sides of the suction platform 21 between the two cutting channels 22. Therefore, the suction cup 72 can suck the pole piece strip 100 corresponding to the length of the three suction platforms 21.

[0112] For further information, see Figure 4During the cutting process, first, the two upper knives 11 and the two lower knives 12 perform cutting at the cutting channels 22 on the left and right sides of the second adsorption platform 21. After completing the cutting action, the film-making table 2 moves to the right, and the two upper knives 11 and the two lower knives 12 perform cutting at the cutting channels 22 on the left and right sides of the fourth adsorption platform 21, and so on, until the two upper knives 11 and the two lower knives 12 complete the cutting action at the cutting channels 22 on the left and right sides of the 12th adsorption platform 21; thereafter, the film-making table 2 continues to move to the right, so that the two upper knives 11 are respectively arranged on the left and right sides of the 14th adsorption platform 21 (of course, at this time, the two lower knives 12 are also respectively arranged on the left and right sides of the 14th adsorption platform 21). At this time, one of the suction parts 722 is in contact with the 13th adsorption platform 21. The platform 21 is correspondingly arranged, and another suction part 722 is located on the left side of the 14th suction platform 21; the suction cup 72 is driven by the lifting drive structure 71, and the suction cup 72 is used to lift the 13th suction platform 21, the 14th suction platform 21 and the pole piece strip 100 on the left side of the 14th suction platform 21; then, the production table 2 moves to the left and resets, so that the two upper knives 11 are again located at the cutting channel 22 on the left and right sides of the second suction platform 21; the suction cup 72 is driven by the lifting drive structure 71, and the pole piece strip 100 is placed on the first suction platform 21, the second suction platform 21 and the third suction platform 21, and at the same time, the three suction platforms 21 adsorb and fix the pole piece strip 100; thereafter, the above-mentioned cutting steps can be repeated.

[0113] In one embodiment, Fig.28 and Fig.33 As shown, the film making device also includes a dust collecting mechanism 6, and the dust collecting mechanism 6 has a dust collecting position close to the cutting channel 22. In this way, when the upper knife 11 and the lower knife 12 cut the pole piece strip 100, the dust collecting mechanism 6 absorbs the powder and slag generated during the cutting process to avoid polluting the environment and the pole piece.

[0114] In one embodiment, Fig.28 As shown, the dust collecting mechanism 6 includes an upper dust collecting structure 61, and the upper dust collecting structure 61 has an upper dust collecting position. The upper dust collecting position is spaced apart from the adsorption platform 21 along the first direction. Specifically, the upper dust collecting position is in the second area above the first area and a gap is left between the upper dust collecting position and the adsorption platform to accommodate the pole piece strip. The upper dust collecting structure 61 is fixed to the upper dust collecting position, or the upper dust collecting structure 61 is movably arranged to be close to or away from the upper dust collecting position.

[0115] It is worth noting that when the upper dust collecting structure 61 is fixed at the upper dust collecting position, there is a gap between the upper dust collecting structure 61 and the adsorption platform 21 , which does not affect the movement of the adsorption platform 21 .

[0116] The specific manner in which the upper dust collecting structure 61 is movably arranged is introduced below.

[0117] In one embodiment, the upper dust collecting structure 61 is connected to the upper knife 11. Therefore, the upper knife 11 can drive the upper dust collecting structure 61 to move simultaneously.

[0118] Specifically, in one embodiment, driven by the blade driving assembly, the upper blade 11 and the lower blade 12 reach the cutting position while the upper dust collecting structure 61 reaches the upper dust collecting position, and the upper blade 11 and the lower blade 12 leave the cutting position while the upper dust collecting structure 61 leaves the upper dust collecting position.

[0119] In addition, in another embodiment, the upper dust collecting structure 61 includes an upper dust collecting part and an upper dust collecting drive part, the upper dust collecting drive part is connected to the upper knife 11, and the upper dust collecting drive part is transmission-connected to the upper dust collecting part; driven by the upper dust collecting drive part and the knife body drive assembly, the upper dust collecting part reaches the upper dust collecting position before the upper knife 11 and the lower knife 12 reach the cutting position, and / or, the upper dust collecting part leaves the upper dust collecting position after the upper knife 11 and the lower knife 12 leave the cutting position. Therefore, before the upper knife 11 and the lower knife 12 cooperate in cutting at the cutting position, the upper dust collecting structure 61 has reached the upper dust collecting position first, and can remove dust from the upper knife 11 and the lower knife 12 before cutting; and / or, when the upper knife 11 and the lower knife 12 are cut and separated, the upper dust collecting structure 61 is still in the upper dust collecting position, and can remove dust from the upper knife 11 and the lower knife 12 after cutting. Thereby, the dust collection effect can be guaranteed and the processing quality of the pole piece can be improved.

[0120] As an alternative embodiment, the dust collecting mechanism 6 further includes an upper dust collecting driving structure, which is transmission-connected to the upper dust collecting structure 61. That is, the upper dust collecting structure 61 is not integrated with the upper knife 11, but is separately provided, and an additional upper dust collecting driving structure is used to drive the upper dust collecting structure 61.

[0121] Further, in the above alternative embodiments, when driven by the upper dust collection drive structure and the blade body drive assembly, the upper dust collection structure 61 reaches the upper dust collection position at the same time when the upper blade 11 and the lower blade 12 reach the cutting position, and when the upper blade 11 and the lower blade 12 leave the cutting position, the upper dust collection structure 61 leaves the upper dust collection position. Alternatively, when driven by the upper dust collection drive structure and the blade body drive assembly, the upper dust collection structure 61 reaches the upper dust collection position before the upper blade 11 and the lower blade 12 reach the cutting position, and / or the upper dust collection structure 61 leaves the upper dust collection position after the upper blade 11 and the lower blade 12 leave the cutting position.

[0122] In one embodiment, Fig.28 As shown, upper dust collecting structures 61 are provided on opposite sides of the upper knife 11 along the second direction.

[0123] In one embodiment, Fig.28 As shown, the dust collecting mechanism 6 includes a lower dust collecting structure 62, and the lower dust collecting structure 62 has a lower dust collecting position. The lower dust collecting position can be spaced apart from the adsorption platform 21 along the first direction, that is, the lower dust collecting position is located in the second area below the first area; the lower dust collecting position can also be located in the first area.

[0124] The lower dust collecting position is spaced apart from the adsorption platform 21 along the first direction; the lower dust collecting structure 62 is fixed to the lower dust collecting position, or the lower dust collecting structure 62 can be movably arranged to be close to or away from the lower dust collecting position.

[0125] When the lower dust collecting position is located in the first area, the lower dust collecting structure 62 can be movably arranged to be close to or away from the lower dust collecting position. In the avoidance state, the lower dust collecting structure 62 is spaced apart from the adsorption platform 21 along the first direction.

[0126] It is worth noting that when the lower dust collecting structure 62 is fixed at the lower dust collecting position, there is a gap between the lower dust collecting structure 62 and the adsorption platform 21 , which does not affect the movement of the adsorption platform 21 .

[0127] The specific manner in which the lower dust collecting structure 62 is movably arranged is introduced below.

[0128] In one embodiment, the lower dust collecting structure 62 is connected to the lower knife 12. Therefore, the lower knife 12 can drive the lower dust collecting structure 62 to move simultaneously.

[0129] Specifically, in one embodiment, driven by the blade driving assembly, the upper blade 11 and the lower blade 12 reach the cutting position while the lower dust collecting structure 62 reaches the lower dust collecting position, and the upper blade 11 and the lower blade 12 leave the cutting position while the lower dust collecting structure 62 leaves the lower dust collecting position.

[0130] In addition, in another embodiment, the lower dust collecting structure 62 includes a lower dust collecting part and a lower dust collecting drive part, the lower dust collecting drive part is connected to the lower knife 12, and the lower dust collecting drive part is transmission-connected to the lower dust collecting part; driven by the lower dust collecting drive part and the knife body drive assembly, the lower dust collecting part reaches the lower dust collecting position before the upper knife 11 and the lower knife 12 reach the cutting position, and / or, the lower dust collecting part leaves the lower dust collecting position after the upper knife 11 and the lower knife 12 leave the cutting position. Therefore, before the upper knife 11 and the lower knife 12 cooperate in cutting at the cutting position, the lower dust collecting structure 62 has arrived at the lower dust collecting position first, and can remove dust from the upper knife 11 and the lower knife 12 before cutting; and / or, when the upper knife 11 and the lower knife 12 are cut and separated, the lower dust collecting structure 62 is still in the lower dust collecting position, and can remove dust from the upper knife 11 and the lower knife 12 after cutting. Thereby, the dust collection effect can be guaranteed and the processing quality of the pole piece can be improved.

[0131] As an alternative embodiment, the dust collecting mechanism 6 further includes a lower dust collecting driving structure, which is drivingly connected to the lower dust collecting structure 62. That is, the lower dust collecting structure 62 is not integrated with the lower knife 12, but is separately provided, and an additional lower dust collecting driving structure is used to drive the lower dust collecting structure 62.

[0132] Further, in the above alternative embodiment, under the drive of the lower dust collection drive structure and the blade drive assembly, the lower dust collection structure 62 reaches the lower dust collection position at the same time when the upper blade 11 and the lower blade 12 reach the cutting position, and the lower dust collection structure 62 leaves the lower dust collection position at the same time when the upper blade 11 and the lower blade 12 leave the cutting position. Under the drive of the lower dust collection drive structure and the blade drive assembly, the lower dust collection structure 62 reaches the lower dust collection position before the upper blade 11 and the lower blade 12 reach the cutting position, and / or the lower dust collection structure 62 leaves the lower dust collection position after the upper blade 11 and the lower blade 12 leave the cutting position.

[0133] In one embodiment, Fig.28 As shown, lower dust collecting structures 62 are provided on opposite sides of the lower knife 12 along the second direction.

[0134] In one embodiment, Fig.37 As shown, in the cutting position, along the second direction, the upper knife 11 and the lower knife 12 have an upper abutting surface 113 and a lower abutting surface 123 that are arranged opposite to each other; the dust collecting mechanism 6 is arranged at least corresponding to one side of the upper abutting surface 113 and one side of the lower abutting surface 123 .

[0135] It is worth noting that the end of the upper knife 11 facing the lower knife 12 and the end of the lower knife 12 facing the upper knife 11 are misaligned along the second direction (that is, they are not facing each other along the first direction). Therefore, the pole piece strip 100 is cut under the shear force of the end of the upper knife 11 facing the lower knife 12 and the end of the lower knife 12 facing the upper knife 11. Therefore, when the upper knife 11 and the lower knife 12 cooperate in cutting, the upper knife 11 and the lower knife 12 have two relatively arranged abutting side surfaces, namely the upper abutting surface 113 and the lower abutting surface 123. When the cutting is completed, powder and residue are easy to adhere to the upper abutting surface 113 and the lower abutting surface 123; therefore, the dust collecting mechanism 6 is at least arranged corresponding to the upper abutting surface 113 and the lower abutting surface 123, so that the upper abutting surface 113 and the lower abutting surface 123 can be dusted, thereby improving the processing quality of the pole piece.

[0136] Further, in one embodiment, the dust collecting mechanism 6 includes an upper dust suction part and a lower dust suction part, the upper dust suction part is at least provided corresponding to one side of the upper abutting surface 113, and the lower dust suction part is at least provided corresponding to one side of the lower abutting surface 123. Therefore, the powder and the like adhering to the upper abutting surface 113 are sucked out by the upper dust suction part, and the powder and the like adhering to the lower abutting surface 123 are sucked out by the lower dust suction part. Optionally, along the second direction, the upper dust suction part may also be provided on the other side of the upper blade 11 opposite to the upper abutting surface 113, and the lower dust suction part may also be provided on the other side of the lower blade 12 opposite to the lower abutting surface 123.

[0137] In addition, in another embodiment, Fig.37 As shown, the dust collecting mechanism 6 includes a dust suction part 63 and an air blowing part 64, at least one of the dust suction part 63 and the air blowing part 64 is disposed on one side of the upper abutting surface 113, at least one of the dust suction part 63 and the air blowing part 64 is disposed on one side of the lower abutting surface 123, and the dust suction part 63 is disposed opposite to the air blowing part 64 along the first direction. For details, please refer to Fig.37 , the right side of the upper knife 11 forms an upper abutting surface 113, and the left side of the lower knife 12 forms a lower abutting surface 123. When the upper knife 11 is provided with a dust suction part 63 on the right side, the lower knife 12 may be provided with a dust suction part 63 or an air blowing part 64 on the right side; when the upper knife 11 is provided with an air blowing part 64 on the right side, the lower knife 12 is provided with a dust suction part 63 on the right side. Similarly, when the lower knife 12 is provided with a dust suction part 63 on the left side, the upper knife 11 may be provided with a dust suction part 63 or an air blowing part 64 on the left side; when the lower knife 12 is provided with an air blowing part 64 on the left side, the lower knife 12 is provided with a dust suction part 63 on the left side. Of course, both the dust suction part 63 and the air blowing part 64 may be provided on one side of the upper abutting surface 113, and both the dust suction part 63 and the air blowing part 64 may be provided on one side of the lower abutting surface 123.

[0138] In one embodiment, Fig.38 and Fig.39 As shown, a blowing hole 211 is provided on one side of the adsorption platform 21 facing the cutting channel 22; and / or, the adsorption platform 21 has an adsorption surface 212 for adsorbing the electrode strip 100, and the adsorption surface 212 has an adsorption hole 213 and an air blowing hole 211, and along the second direction, the air blowing holes 211 are located on opposite sides of the adsorption hole 213. By providing the air blowing holes 211, the edge of the electrode formed by cutting can be blown, thereby reducing the powder and residue adhering to the electrode, and improving the processing quality of the electrode.

[0139] Specifically, in one embodiment, the film-making device further includes a positive pressure supply mechanism, the adsorption platform 21 is provided with a positive pressure channel, the positive pressure channel is connected to the air blowing hole 211, and the positive pressure supply mechanism is suitable for providing positive pressure to the positive pressure channel. In this way, the positive pressure supply mechanism supplies gas to the positive pressure channel, the gas flows through the positive pressure channel to the air blowing hole 211, and is blown out from the air blowing hole 211.

[0140] Furthermore, the positive pressure supply mechanism moves synchronously with the adsorption platform 21; that is, the positive pressure supply mechanism remains connected to the adsorption platform 21, for example, the pipeline of the positive pressure supply mechanism is integrated with the drag chain of the linear motor. Alternatively, the positive pressure supply mechanism is arranged on the lower knife 12, so that when the lower knife 12 moves along the first direction, the positive pressure supply mechanism is connected to or separated from the positive pressure channel; specifically, one end of the positive pressure channel away from the air hole 211 passes through the adsorption platform 21 to form an air supply port, when the lower knife 12 moves toward the cutting position, the positive pressure supply mechanism can be connected to the air supply port and supply air to the positive pressure channel, when the lower knife 12 moves away from the cutting position, the positive pressure supply mechanism is separated from the air supply port, and the positive pressure supply mechanism stops supplying air.

[0141] In one embodiment, the cutting mechanism 1 also includes a knife body driving assembly for driving the upper knife 11 and the lower knife 12. Driven by the knife body driving assembly, the upper knife 11, the lower knife 12 and the pole piece strip 100 to be cut intersect at a cutting position where the cutting channel 22 intersects the line connecting the upper knife 11 and the lower knife 12.

[0142] Specifically, under the drive of the knife body drive assembly, the lower knife 12 can arrive at the cutting position before the upper knife 11. Alternatively, under the drive of the knife body drive assembly, the upper knife 11 and the lower knife 12 can arrive at the cutting position at the same time. Alternatively, under the drive of the knife body drive assembly, the upper knife 11 can arrive at the cutting position before the lower knife 12. In specific implementation, the above three methods can be selected according to the structure of the upper knife 11 and the lower knife 12 (whether it has a blade), the movement mode of the upper knife 11 and the lower knife 12 (translation or rotation), and the cutting mode of the upper knife 11 and the lower knife 12 on the electrode sheet strip 100 (punching or shearing).

[0143] It is worth noting that the knife body driving assembly is suitable for driving the upper knife 11 and the lower knife 12 to move in translation or rotation.

[0144] It should be noted that when the blade drive assembly drives the upper blade 11 and the lower blade 12 to move horizontally, the first direction and the second direction are set at an angle. In this embodiment, the first direction and the second direction are set vertically. Further, the first direction is a vertical direction, and the second direction is a horizontal direction. It can be understood that when the blade drive assembly drives the upper blade 11 and the lower blade 12 to rotate, the first direction is a rotation direction.

[0145] It is worth noting that the upper knife 11 and the lower knife 12 are suitable for shearing or punching the pole piece strip 100 to be cut at the cutting position.

[0146] It should be noted that shearing means that both the upper knife 11 and the lower knife 12 have blades, and the electrode strip 100 is cut at the cutting position by the blades of the upper knife 11 and the lower knife 12; for the shearing scheme, the upper knife 11 and the lower knife 12 usually reach the cutting position at the same time. Punching means that one of the upper knife 11 and the lower knife 12 has a blade, and the other of the upper knife 11 and the lower knife 12 is a supporting plane arranged opposite to the blade, and the blade punches the electrode strip 100 on the supporting plane; for the punching scheme, the one of the upper knife 11 and the lower knife 12 with the supporting plane usually arrives at the cutting position first, and the one of the upper knife 11 and the lower knife 12 with the blade arrives at the cutting position slightly later, so as to punch the electrode strip 100 corresponding to the supporting plane.

[0147] Various embodiments of the cutting mechanism 1 in which the knife body driving assembly drives the upper knife 11 and the lower knife 12 to move in translation are introduced below.

[0148] In a first embodiment, if Figures 7 to 9 As shown, the cutting mechanism 1 also includes a knife holder 13, and the knife body driving assembly includes a knife holder driving structure 14 and a knife body driving structure 18. The upper knife 11, the lower knife 12 and the knife body driving structure 18 are all arranged on the knife holder 13. The knife holder driving structure 14 is suitable for driving the knife holder 13 to make one of the upper knife 11 and the lower knife 12 reach the cutting position, and the knife body driving structure 18 is suitable for driving the other of the upper knife 11 and the lower knife 12 to reach the cutting position.

[0149] It is worth noting that, in one case, when the upper knife 11 and the lower knife 12 are cutting, the knife holder 13 is driven to rise by the knife holder driving structure 14, which can simultaneously drive the lower knife 12, the knife body driving structure 18 and the upper knife 11 to rise (at this time, the relative positions of the upper knife 11 and the lower knife 12 remain unchanged), until the upper end surface of the lower knife 12 is flush with the adsorption surface 212 of the adsorption platform 21; then, the knife body driving structure 18 drives the upper knife 11 to descend, and with the cooperation of the upper knife 11 and the lower knife 12, the pole piece strip 100 is cut off; then, the knife body driving structure 18 drives the upper knife 11 to rise and reset, and the knife holder driving structure 14 drives the knife holder 13 to descend and reset, waiting for the next cutting action.

[0150] It should be noted that, driven by the knife holder driving structure 14, the lower knife 12 first rises to between adjacent adsorption platforms 21 and is flush with the adsorption surface 212 of the adsorption platform 21, so that the lower knife 12 can first contact the pole piece material strip 100 and support the pole piece material strip 100; then, driven by the knife body driving structure 18, the upper knife 11 descends and cooperates with the lower knife 12 to cut the pole piece material strip 100. At this time, the upper knife 11 and the lower knife 12 cut the pole piece material strip 100 by punching, and the upper knife 11 has a blade and the lower knife 12 has a support plane.

[0151] In another case, when the upper knife 11 and the lower knife 12 are cutting, the knife holder driving structure 14 drives the knife holder 13 to descend, which can simultaneously drive the lower knife 12, the knife body driving structure 18 and the upper knife 11 to descend (at this time, the relative positions of the upper knife 11 and the lower knife 12 remain unchanged) until the lower end surface of the lower knife 12 is flush with the adsorption surface 212 of the adsorption platform 21; then, the knife body driving structure 18 drives the lower knife 12 to rise, and with the cooperation of the upper knife 11 and the lower knife 12, the pole piece strip 100 is cut off; then, the knife body driving structure 18 drives the lower knife 12 to descend and reset, and the knife holder driving structure 14 drives the knife holder 13 to rise and reset, waiting for the next cutting action.

[0152] It should be noted that, driven by the knife holder driving structure 14, the upper knife 11 first descends to between adjacent adsorption platforms 21 and is flush with the adsorption surface 212 of the adsorption platform 21, so that the upper knife 11 can first contact the pole piece material strip 100 and exert a downward pressure on the pole piece material strip 100; then, driven by the knife body driving structure 18, the lower knife 12 rises and cooperates with the upper knife 11 to cut the pole piece material strip 100. At this time, the upper knife 11 and the lower knife 12 cut the pole piece material strip 100 by punching, and the upper knife 11 has a support plane and the lower knife 12 has a blade.

[0153] Specifically, in the first embodiment, if Figures 7 to 9As shown, the film-making device also includes a fixed seat 5, and the tool holder 13 is slidably connected to the fixed seat 5. The tool holder driving structure 14 includes a linear driving part 141 and a movable seat 142. The movable seat 142 is slidably arranged on the fixed seat 5 and is arranged opposite to the tool holder 13. The linear driving part 141 is transmission-connected with the movable seat 142. A side of the tool holder 13 facing the movable seat 142 and / or a side of the movable seat 142 facing the tool holder 13 are inclined surfaces. The inclined surfaces are inclined relative to the driving direction of the linear driving part 141 and the arrangement direction of the upper knife 11 and the lower knife 12. A side of the tool holder 13 facing the movable seat 142 and a side of the movable seat 142 facing the tool holder 13 are slidably connected. Furthermore, the tool holder 13 is slidably disposed on the fixed seat 5 in the vertical direction, and the movable seat 142 is slidably disposed on the fixed seat 5 in the horizontal direction. The side of the tool holder 13 facing the movable seat 142 and the side of the movable seat 142 facing the tool holder 13 are both inclined surfaces. The driving direction of the linear drive unit 141 is the horizontal direction, and the arrangement direction of the upper knife 11 and the lower knife 12 is the vertical direction. The inclined surfaces are inclined relative to the horizontal direction and the vertical direction, and the two inclined surfaces are slidably connected. Therefore, when the linear drive unit 141 drives the movable seat 142 to move in the horizontal direction, the tool holder 13 moves in the vertical direction under the pushing action of the two inclined surfaces.

[0154] It is worth mentioning that please refer to Figure 8 When the linear driving part 141 drives the movable seat 142 to move to the left, the interaction between the two inclined surfaces causes the tool holder 13 to move upward; when the linear driving part 141 drives the movable seat 142 to move to the right, the interaction between the two inclined surfaces causes the tool holder 13 to move downward.

[0155] Please note that Figure 8 The fixed seat 5 and the tool holder 13, the movable seat 142 and the fixed seat 5, and the two inclined surfaces are all slidably connected through the matching structure of the slider and the slide rail.

[0156] In a second embodiment, if Figures 10 to 15 As shown, the knife body driving assembly includes an upper knife driving structure 15 and a lower knife driving structure 16. The upper knife driving structure 15 is connected to the upper knife 11 by transmission, and the lower knife driving structure 16 is connected to the lower knife 12 by transmission. Therefore, when cutting, the upper knife driving structure 15 drives the upper knife 11 to descend, and the lower knife driving structure 16 drives the lower knife 12 to rise, and the pole piece strip 100 is cut off with the cooperation of the upper knife 11 and the lower knife 12.

[0157] It should be noted that, driven by the lower knife driving structure 16, the lower knife 12 first rises to between the adjacent adsorption platforms 21 and is flush with the adsorption surface 212 of the adsorption platform 21, so that the lower knife 12 can first contact the pole piece material strip 100 and support the pole piece material strip 100; then, driven by the upper knife driving structure 15, the upper knife 11 descends and cooperates with the lower knife 12 to cut the pole piece material strip 100. Specifically, the lower knife driving structure 16 can first drive the lower knife 12 to move, and after a predetermined time interval, the upper knife driving structure 15 can drive the upper knife 11 to move; the stroke of the lower knife 12 can also be made shorter than the stroke of the upper knife 11, at which time the lower knife driving structure 16 and the upper knife driving structure 15 can drive the lower knife 12 and the upper knife 11 at the same time. At this time, the upper knife 11 and the lower knife 12 cut the pole piece material strip 100 by punching, and the upper knife 11 has a blade and the lower knife 12 has a supporting plane.

[0158] Of course, it is also possible that, driven by the upper knife driving structure 15, the upper knife 11 first descends to between the adjacent adsorption platforms 21 and is flush with the adsorption surface 212 of the adsorption platform 21, so that the upper knife 11 can first contact the pole piece material strip 100 and exert a downward pressure on the pole piece material strip 100; then, driven by the lower knife driving structure 16, the lower knife 12 rises and cooperates with the upper knife 11 to cut the pole piece material strip 100. Specifically, the upper knife driving structure 15 can first drive the upper knife 11 to move, and after a predetermined time interval, the lower knife driving structure 16 can drive the lower knife 12 to move; the stroke of the upper knife 11 can also be made shorter than the stroke of the lower knife 12, at which time the lower knife driving structure 16 and the upper knife driving structure 15 can drive the lower knife 12 and the upper knife 11 at the same time. At this time, the upper knife 11 and the lower knife 12 cut the pole piece material strip 100 by punching, and the upper knife 11 has a support plane and the lower knife 12 has a blade.

[0159] Alternatively, the upper knife driving structure 15 may drive the upper knife 11 to descend, and the lower knife driving structure 16 may drive the lower knife 12 to ascend, and the upper knife 11 and the lower knife 12 may reach the cutting position at the same time. At this time, the upper knife 11 and the lower knife 12 cut the pole piece strip 100 in a shearing manner, and both the upper knife 11 and the lower knife 12 have blades.

[0160] In a second embodiment, if Figures 10 to 13 As shown, the cutting mechanism 1 also includes a knife holder 13, which includes a main body 131. The first end of the upper knife 11 is connected to the main body 131, and the second end of the upper knife 11 is set in a direction away from the main body 131 so that the upper knife 11 forms a cantilever structure. The first end of the lower knife 12 is connected to the main body 131, and the second end of the lower knife 12 is set in a direction away from the main body 131 so that the lower knife 12 forms a cantilever structure.

[0161] Specifically, in the second embodiment, if Figures 10 to 12 As shown, the tool holder 13 also includes an upper tool holder 132, which is arranged on a side of the upper knife 11 away from the lower knife 12, a first end of the upper tool holder 132 is connected to the main body 131, and a second end of the upper tool holder 132 is arranged in a direction away from the main body 131, a first end of the upper knife 11 is transmission-connected to the upper knife driving structure 15, and an upper guide structure 133 is arranged between the second end of the upper knife 11 and the second end of the upper tool holder 132; the tool holder 13 also includes a lower tool holder 134, which is arranged on a side of the lower knife 12 away from the upper knife 11, a first end of the lower tool holder 134 is connected to the main body 131, and a second end of the lower tool holder 134 is arranged in a direction away from the main body 131, a first end of the lower knife 12 is transmission-connected to the lower knife driving structure 16, and a lower guide structure 135 is arranged between the second end of the lower knife 12 and the second end of the lower tool holder 134. In this way, the upper knife 11 is installed on the main body 131 by using the upper knife holder 132, and the lower knife 12 is installed on the main body 131 by using the lower knife holder 134. The upper knife 11 and the lower knife 12 form a cantilever structure through the knife holder 13, which is convenient for the film making table 2 to pass through between the upper knife 11 and the lower knife 12. In addition, the upper guide structure 133 is provided to guide and limit the movement of the upper knife 11 to ensure the position accuracy of the upper knife 11. The lower guide structure 135 is provided to guide and limit the movement of the lower knife 12 to ensure the position accuracy of the lower knife 12, thereby ensuring the matching accuracy of the upper knife 11 and the lower knife 12, thereby improving the cutting accuracy of the electrode sheet strip 100.

[0162] Further, in this embodiment, the upper guide structure 133 and the lower guide structure 135 are both ball bushing guide assemblies. Of course, the upper guide structure 133 and / or the lower guide structure 135 can also be guide rail guide block guide assemblies.

[0163] Specifically, in the second embodiment, if Fig.12 As shown, the main body 131 includes a frame 1311, a guide fixed structure 1312 and a guide movable structure 1313. The guide fixed structure 1312 is connected to the frame 1311. The guide movable structure 1313 is movably arranged along the guide fixed structure 1312. Two guide movable structures 1313 are arranged at intervals on the guide fixed structure 1312. The upper knife 11 and the lower knife 12 are respectively connected to the two guide movable structures 1313. In this way, through the guiding cooperation of the guide movable structure 1313 and the guide fixed structure 1312, the movement of the upper knife 11 and the lower knife 12 is guided and limited at the first end of the upper knife 11 and the first end of the lower knife 12, so as to further ensure the position accuracy of the upper knife 11 and the lower knife 12, thereby further improving the cutting accuracy of the polar sheet material strip 100.

[0164] It should be noted that, in this embodiment, Fig.10 and Fig.12As shown, the guide fixed structure 1312 is a guide shaft, the guide movable structure 1313 is a guide sleeve, and a ball is arranged between the guide shaft and the guide sleeve to form a ball bushing guide assembly. Of course, the guide fixed structure 1312 can also be a guide rail, and correspondingly, the guide movable structure 1313 is a guide block to form a guide rail guide block guide assembly (see Fig.25 ).

[0165] For further information, see Fig.10 and Fig.13 A plurality of guide fixed structures 1312 are arranged at intervals on the frame 1311, and each guide fixed structure 1312 is provided with two guide movable structures 1313. The upper knife 11 is connected to the upper guide movable structure 1313 of each guide fixed structure 1312, and the lower knife 12 is connected to the lower guide movable structure 1313 of each guide fixed structure 1312. Since both the upper knife 11 and the lower knife 12 are cantilever structures, the first end of the upper knife 11 cooperates with the plurality of guide fixed structures 1312 through the plurality of guide movable structures 1313, and the first end of the lower knife 12 cooperates with the plurality of guide fixed structures 1312 through the plurality of guide movable structures 1313, so as to improve the overall rigidity of the upper knife 11 and the lower knife 12, improve the stability of the upper knife 11 and the lower knife 12, and ensure the cutting accuracy.

[0166] Specifically, Fig.13 and Fig.16 As shown, a plurality of guide fixing structures 1312 and the upper guide structure 133 and / or the lower guide structure 135 are arranged along the same straight line; further, in this embodiment, the upper guide structure 133 and the lower guide structure 135 are arranged along the vertical direction ( Fig.16 The guide fixing structure 1312 is provided with two collinear arrangements. Fig.16 In the figure shown, the two guide fixing structures 1312 and the upper guide structure 133 and the lower guide structure 135 are arranged along the same straight line. Of course, the guide fixing structures 1312 can also be set to other numbers, such as three, four, etc.

[0167] Or, if Fig.17 As shown, the plurality of guide fixing structures 1312 and the upper guide structure 133 and / or the lower guide structure 135 are arranged in a triangle, so that the main body 131 has a higher stability. Further, the upper guide structure 133 and the lower guide structure 135 are arranged in a vertical direction ( Fig.17 The guide fixing structure 1312 is provided with two collinear arrangements. Fig.17In the figure shown, the locations of the two guide fixing structures 1312 are two vertices of the triangle, and the location of the upper guide structure 133 (actually also the location of the lower guide structure 135) is another vertex of the triangle. Of course, the guide fixing structures 1312 can also be set to other numbers, such as three, four, etc. Specifically, Fig.17 Another guiding and fixing structure 1312 is provided between the two guiding and fixing structures 1312 shown.

[0168] It is worth noting that the plurality of guide fixing structures 1312 can be arranged only along the same straight line with the upper guide structure 133 or in a triangular arrangement; or, the plurality of guide fixing structures 1312 can be arranged only along the same straight line with the lower guide structure 135 or in a triangular arrangement.

[0169] In a second embodiment, if Figures 10 to 13 As shown, the upper knife driving structure 15 and the lower knife driving structure 16 are both arranged on the main body 131 .

[0170] Specifically, in the second embodiment, if Fig.10 and Fig.12 As shown, the upper knife driving structure 15 includes an upper servo motor 151, an upper screw rod 152 and an upper connecting block 153. The upper servo motor 151 is arranged on the frame 1311. The upper servo motor 151 is suitable for driving the upper screw rod 152 to rotate. The upper connecting block 153 is threadedly connected to the upper screw rod 152 and connected to the upper knife 11; therefore, under the drive of the upper servo motor 151, the upper screw rod 152 rotates to make the upper connecting block 153 move along the upper screw rod 152 and drive the upper knife 11 to move. The lower knife driving structure 16 includes a lower servo motor 161, a lower screw rod 162 and a lower connecting block 163. The lower servo motor 161 is arranged on the frame 1311. The lower servo motor 161 is suitable for driving the lower screw rod 162 to rotate. The lower connecting block 163 is threadedly connected to the lower screw rod 162 and connected to the lower knife 12; therefore, under the drive of the lower servo motor 161, the lower screw rod 162 rotates to make the lower connecting block 163 move along the lower screw rod 162 and drive the lower knife 12 to move.

[0171] Of course, in the second embodiment, the upper knife driving structure 15 and the lower knife driving structure 16 may also be linear motors, or telescopic cylinders and other structures.

[0172] It should be noted that if Fig.14As shown, for one film-making table 2, two cutting mechanisms 1 in the second embodiment described above can be arranged at intervals along the moving direction of the film-making table 2, so that the two upper knives 11 are respectively arranged corresponding to two adjacent cutting channels 22, and correspondingly, the two lower knives 12 are also arranged corresponding to two adjacent cutting channels 22. Of course, one cutting mechanism 1 can also include two upper knives 11 arranged at intervals and two lower knives 12 arranged at intervals, for example, two upper knives 11 are arranged at intervals on an upper knife holder 132, an upper guide structure 133 is arranged between the second end of each upper knife 11 and the second end of the upper knife holder 132, and two lower knives 12 are arranged at intervals under a lower knife holder 134, and a lower guide structure 135 is arranged between the second end of each lower knife 12 and the second end of the lower knife holder 134.

[0173] In a third embodiment, if Figures 18 to 21 As shown, compared with the second implementation, only the differences between the second implementation are introduced below.

[0174] In a third embodiment, if Figures 18 to 20 As shown, the tool holder 13 also includes a lower tool holder 134, which is arranged on the side of the lower knife 12 away from the upper knife 11, the first end of the lower tool holder 134 is connected to the main body 131, the second end of the lower tool holder 134 is arranged in a direction away from the main body 131, the first end of the lower knife 12 is transmission-connected to the lower knife driving structure 16, and a lower guide structure 135 is arranged between the second end of the lower knife 12 and the second end of the lower tool holder 134.

[0175] In a third embodiment, if Fig.18 and Fig.19 As shown, a guide matching structure 17 is arranged between the upper knife 11 and the lower knife 12, one end of the guide matching structure 17 is connected to the second end of the upper knife 11, and the other end of the guide matching structure 17 is connected to the second end of the lower knife 12. In the cutting state, the guide matching structure 17 is matched, and in the avoidance state, the guide matching structure 17 is separated.

[0176] Specifically, in the third embodiment, as Fig.18 and Fig.19 As shown, the lower guide structure 135 is a ball bushing guide assembly, that is, the lower guide structure 135 includes a guide shaft and a guide sleeve, one end of the guide shaft (the lower end of the guide shaft) is connected to the second end of the lower tool holder 134, and the other end of the guide shaft (the upper end of the guide shaft) passes through the second end of the lower knife 12, and the guide sleeve is arranged on the outside of the guide shaft and can be movably arranged along the guide shaft, and the guide sleeve is connected to the second end of the lower knife 12.

[0177] Further, such as Fig.18 and Fig.19As shown, the guide shaft is extended from the lower knife 12 toward the upper knife 11, and the second end of the upper knife 11 is also provided with a guide sleeve to form a guide matching structure 17. In the cutting state, the guide sleeve of the upper knife 11 and the guide shaft are inserted and guided, and in the avoidance state, the guide sleeve of the upper knife 11 is separated from the guide shaft. It is worth noting that the end of the guide shaft close to the upper knife 11 (the upper end of the guide shaft) is provided with a chamfer to facilitate insertion with the guide sleeve of the upper knife 11.

[0178] It should be noted that, as an alternative implementation, the lower guide structure 135 may also be a guide rail guide block guide structure (see Fig.24 and Fig.25 ). Specifically, the lower guide structure 135 includes a guide rail and a guide block. One end of the guide rail (the lower end of the guide rail) is connected to the second end of the lower knife holder 134, and the other end of the guide rail (the upper end of the guide rail) passes through the second end of the lower knife 12. The guide block is slidably connected to the guide rail, and the guide block is connected to the second end of the lower knife 12. Further, the guide rail is extended from the lower knife 12 toward the upper knife 11, and the second end of the upper knife 11 is also provided with a guide block to form a guide matching structure 17. In the cutting state, the guide block of the upper knife 11 is inserted into the guide rail for guidance, and in the avoidance state, the guide block of the upper knife 11 is separated from the guide rail.

[0179] That is, in the third embodiment, part of the guide matching structure 17 is integrally provided with the lower guide structure 135. Of course, the guide matching structure 17 and the lower guide structure 135 can be provided separately as long as the guide requirements are met.

[0180] It should be noted that the above-mentioned guide matching structure 17 can also be applied between the upper knife 11 and the lower knife 12 in the second embodiment.

[0181] It is worth noting that, in the third embodiment, the tool holder 13 only includes the lower tool holder 134, but not the upper tool holder 132. Of course, as an alternative embodiment, the tool holder 13 may also only include the upper tool holder 132, but not the lower tool holder 134. Accordingly, an upper guide structure 133 is provided between the second end of the upper knife 11 and the second end of the upper tool holder 132. Furthermore, the guide matching structure 17 may also be provided together with the upper guide structure 133.

[0182] In a fourth embodiment, the knife body drive assembly is connected to the upper knife 11 and the lower knife 12 at the same time, and is suitable for driving the upper knife 11 and the lower knife 12 to move in opposite directions at the same time. At this time, driven by the knife body drive assembly, the lower knife 12 and the upper knife 11 can reach the cutting position at the same time. For example, the upper knife 11 and the lower knife 12 have equal strokes, and the knife body drive assembly drives the upper knife 11 and the lower knife 12 to move in opposite directions at the same time; therefore, when performing the cutting action, the knife body drive assembly drives the upper knife 11 to descend and the lower knife 12 to rise at the same time, and the pole piece strip 100 is cut off with the cooperation of the upper knife 11 and the lower knife 12.

[0183] It should be noted that, in the fourth embodiment, both the upper knife 11 and the lower knife 12 usually have blades to shear the pole piece strip 100 .

[0184] Specifically, in the fourth embodiment, as Figure 22 to Figure 27 As shown, the knife body drive assembly may include a servo motor 19 and a bidirectional screw rod 20. The upper knife 11 and the lower knife 12 are respectively connected to the bidirectional threads on the bidirectional screw rod 20. The servo motor 19 is suitable for driving the bidirectional screw rod 20 to rotate, and under the action of the bidirectional threads, the upper knife 11 and the lower knife 12 move in opposite directions.

[0185] As an alternative embodiment, in a fourth embodiment, if Figure 33 to Figure 36 As shown, the knife body driving assembly includes a servo motor 19, an upper knife cam 101, an upper knife connecting rod structure 102, a lower knife cam 103 and a lower knife connecting rod structure 104. The servo motor 19 is connected to the upper knife cam 101 and the lower knife cam 103 in a transmission manner. One end of the upper knife connecting rod structure 102 is movably connected to the peripheral wall of the upper knife cam 101, and the other end of the upper knife connecting rod structure 102 is connected to the upper knife 11. One end of the lower knife connecting rod structure 104 is movably connected to the peripheral wall of the lower knife cam 103, and the other end of the lower knife connecting rod structure 104 is connected to the lower knife 12. Further, the upper knife cam 101 is connected to the upper knife connecting rod structure 102 through a cam follower 105, and the lower knife cam 103 is connected to the lower knife connecting rod structure 104 through a cam follower 105. It is worth noting that a guide rail 106 is provided on the tool holder 13 . The guide rail 106 is extended along the first direction. The upper tool connecting rod structure 102 and the lower tool connecting rod structure 104 are both slidably connected to the guide rail 106 .

[0186] It is worth noting that, with regard to the technical solution of the knife body driving assembly driving the upper knife 11 and the lower knife 12 to rotate, the connection method and working principle of the upper knife 11 and the lower knife 12 can be similar to those of scissors, which will not be described in detail here.

[0187] Please note that Fig.10 and Fig. 22The upper knife 11 includes an upper knife body 111 and an upper knife seat 112, the upper knife body 111 is connected to the upper knife seat 112, and the upper knife seat 112 is connected to the knife holder 13; the lower knife 12 includes a lower knife body 121 and a lower knife seat 122, the lower knife body 121 is connected to the lower knife seat 122, and the lower knife seat 122 is connected to the knife holder 13. The upper knife body 111 and the lower knife body 121 are arranged opposite to each other, and the pole piece strip 100 is cut by the upper knife body 111 and the lower knife body 121.

[0188] When using the film-making device of this embodiment, first, the film-making table 2 is located at the extreme position on one side, at which time the film-making table 2 is in the loading position, and the film-making table 2 adsorbs and fixes the end of the pole piece strip 100; then, the pole piece strip 100 is cut with the cooperation of the upper knife 11 and the lower knife 12, and the film-making of several pole piece single pieces 200 is completed in the process of the film-making table 2 moving to the extreme position on the other side; when the film-making table 2 is located at the extreme position on the other side, at which time the film-making table 2 is in the cutting completion position, the tail material lifting and placing mechanism 7 lifts the end of the pole piece strip 100 on the film-making table 2, and at the same time, the pole piece transporting device takes away the pole piece single piece 200 on the film-making table 2 for stacking; finally, the film-making table 2 moves and resets, and the tail material lifting and placing mechanism 7 places the end of the pole piece strip 100 on the film-making table 2 for loading; repeat the above steps.

[0189] According to an embodiment of the present invention, on the other hand, a lamination device is provided, including: a lamination table; the above-mentioned production device, arranged on the side of the lamination table; and a pole piece conveying device, suitable for conveying the pole piece single piece 200 cut and formed on the production table 2 to the lamination table.

[0190] It is worth noting that the above-mentioned film-making device may be provided with one, and the film-making device is used to form a single electrode sheet 200 of one polarity of the positive electrode sheet and the negative electrode sheet; the lamination equipment also includes another film-making device, which may be other types of film-making devices, such as laser cutting film-making, hardware die-cutting film-making, etc., and the film-making device can form a single electrode sheet 200 of the other polarity of the positive electrode sheet and the negative electrode sheet; thus, the two polarity single electrode sheets 200 are used to laminate and manufacture battery cells. Alternatively, the above-mentioned film-making device is provided with two, and the two film-making devices are used to prepare two polarity single electrode sheets 200 (that is, positive electrode sheets and negative electrode sheets) respectively, and the two polarity single electrode sheets 200 are used to laminate and manufacture battery cells. Of course, the above-mentioned film-making device can also be set as one, and the one above-mentioned film-making device can be used to laminate and form both positive electrode sheets and negative electrode sheets, and the two polarity single electrode sheets 200 are used to laminate and manufacture battery cells.

[0191] According to an embodiment of the present invention, on another aspect, a battery production system is provided, comprising the above-mentioned film making device, or comprising the above-mentioned film stacking equipment.

[0192] Although the embodiments of the present invention have been 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: A cutting mechanism (1) comprises an upper knife (11) and a lower knife (12) arranged opposite to each other, wherein the upper knife (11) and the lower knife (12) are movably arranged along a first direction, and the cutting mechanism (1) has a cutting state in which the upper knife (11) and the lower knife (12) are close to each other, and an avoiding state in which the upper knife (11) and the lower knife (12) are away from each other; A film-making table (2) is movably arranged between the upper knife (11) and the lower knife (12), and the film-making table (2) comprises a plurality of adsorption platforms (21) arranged at intervals, and a cutting channel (22) is formed between adjacent adsorption platforms (21). In the cutting state, the upper knife (11) and the lower knife (12) are arranged relative to the cutting channel (22), and in the avoidance state, the adsorption platform (21) moves along a second direction and passes between the upper knife (11) and the lower knife (12).

2. The film-making device according to claim 1, characterized in that: The film-making device further comprises a linear drive mechanism (3), wherein the linear drive mechanism (3) is adapted to drive the film-making table (2) to move back and forth along a straight line, and to enable each of the cutting channels (22) to be arranged opposite to the upper knife (11) and the lower knife (12) in sequence; or, The film-making device further comprises a circulating drive mechanism (4), wherein the circulating drive mechanism (4) is suitable for driving a plurality of the adsorption platforms (21) to move circumferentially and circularly, and for making each of the cutting channels (22) be arranged opposite to the upper knife (11) and the lower knife (12) in sequence.

3. The film-making device according to claim 2, characterized in that: The linear drive mechanism (3) comprises a linear fixed part (31) and a linear motion part (32), wherein the linear fixed part (31) is fixedly arranged at a predetermined installation position, the linear fixed part (31) is extended along the second direction, and the linear motion part (32) is connected to the linear fixed part (31) and is movably arranged along the second direction; the film-making table (2) further comprises a connecting arm (23), the connecting arm (23) is connected to a plurality of the adsorption platforms (21) at the same time, and the linear motion part (32) is connected to the connecting arm (23); or, a plurality of the linear motion parts (32) are arranged along the second direction, and a plurality of the adsorption platforms (21) are respectively connected to a plurality of the linear motion parts (32).

4. The film-making device according to claim 2, characterized in that: The circulation drive mechanism (4) comprises a circulation fixed part (41) and a circulation moving part (42), wherein the circulation fixed part (41) is fixedly arranged at a predetermined installation position, the circulation fixed part (41) is arranged to be enclosed in the circumferential direction, the circulation moving part (42) is connected to the circulation fixed part (41) and is movably arranged in the circumferential direction, and a plurality of the circulation moving parts (42) are arranged in the circumferential direction, and a plurality of the adsorption platforms (21) are respectively connected to a plurality of the circulation moving parts (42).

5. The film-making device according to any one of claims 1 to 4, characterized in that: The upper knife (11) is provided with one, and the lower knife (12) is also provided with one corresponding to the upper knife (11); or, Along the moving direction of the adsorption platform (21), a plurality of upper knives (11) are arranged at intervals, and a plurality of the upper knives (11) are respectively arranged corresponding to a plurality of the cutting channels (22), and a plurality of the lower knives (12) are also arranged corresponding to a plurality of the upper knives (11).

6. The film-making device according to any one of claims 1 to 4, characterized in that: The cutting mechanism (1) further comprises a knife body driving assembly for driving the upper knife (11) and the lower knife (12); under the drive of the knife body driving assembly, the upper knife (11), the lower knife (12) and the electrode strip (100) to be cut intersect at a cutting position where the cutting channel (22) intersects with a line connecting the upper knife (11) and the lower knife (12).

7. The film-making device according to claim 6, characterized in that: The knife body driving assembly comprises an upper knife driving structure (15) and a lower knife driving structure (16), wherein the upper knife driving structure (15) is in driving connection with the upper knife (11), and the lower knife driving structure (16) is in driving connection with the lower knife (12); or, The knife body driving assembly is simultaneously connected to the upper knife (11) and the lower knife (12) in transmission, and is suitable for driving the upper knife (11) and the lower knife (12) to move in opposite directions at the same time.

8. The film-making device according to claim 7, characterized in that: The cutting mechanism (1) further comprises a knife holder (13), wherein the knife holder (13) comprises a main body (131), wherein a first end of the upper knife (11) is connected to the main body (131), and a second end of the upper knife (11) is arranged in a direction away from the main body (131), so that the upper knife (11) forms a cantilever structure, and a first end of the lower knife (12) is connected to the main body (131), and a second end of the lower knife (12) is arranged in a direction away from the main body (131), so that the lower knife (12) forms a cantilever structure.

9. The film-making device according to claim 8, characterized in that: The tool holder (13) further comprises an upper tool holder (132), wherein the upper tool holder (132) is arranged on a side of the upper tool (11) away from the lower tool (12), a first end of the upper tool holder (132) is connected to the main body (131), a second end of the upper tool holder (132) is arranged in a direction away from the main body (131), a first end of the upper tool holder (132) is transmission-connected to the upper tool drive structure (15), and an upper guide structure (133) is arranged between the second end of the upper tool (11) and the second end of the upper tool holder (132); and / or, The tool holder (13) further comprises a lower tool holder (134), wherein the lower tool holder (134) is arranged on a side of the lower tool (12) away from the upper tool (11), a first end of the lower tool holder (134) is connected to the main body (131), a second end of the lower tool holder (134) is arranged in a direction away from the main body (131), a first end of the lower tool holder (134) is transmission-connected to the lower tool drive structure (16), and a lower guide structure (135) is arranged between the second end of the lower tool (12) and the second end of the lower tool holder (134).

10. The film-making device according to claim 9, characterized in that: The main body (131) comprises a frame (1311), a guide fixed structure (1312) and a guide movable structure (1313); the guide fixed structure (1312) is connected to the frame (1311); the guide movable structure (1313) is movably arranged along the guide fixed structure (1312); two guide movable structures (1313) are arranged at intervals on the guide fixed structure (1312); and the upper knife (11) and the lower knife (12) are respectively connected to the two guide movable structures (1313).

11. The film-making device according to claim 10, characterized in that: A plurality of the guide fixed structures (1312) are arranged at intervals on the frame (1311), and each of the guide fixed structures (1312) is provided with two guide movable structures (1313); the upper knife (11) is simultaneously connected to the guide movable structure (1313) located above each of the guide fixed structures (1312), and the lower knife (12) is simultaneously connected to the guide movable structure (1313) located below each of the guide fixed structures (1312); A plurality of the guide fixing structures (1312) and the upper guide structure (133) and / or the lower guide structure (135) are arranged along the same straight line; or, a plurality of the guide fixing structures (1312) and the upper guide structure (133) and / or the lower guide structure (135) are arranged in a triangle.

12. The film-making device according to claim 8, characterized in that: A guide matching structure (17) is provided between the upper knife (11) and the lower knife (12); one end of the guide matching structure (17) is connected to the second end of the upper knife (11), and the other end of the guide matching structure (17) is connected to the second end of the lower knife (12); in the cutting state, the guide matching structure (17) is matched, and in the avoidance state, the guide matching structure (17) is separated.

13. The film-making device according to claim 1, characterized in that: The film-making device further comprises a tail material lifting and placing mechanism (7), wherein the tail material lifting and placing mechanism (7) is arranged above the film-making table (2) and close to the upper knife (11).

14. The film-making device according to claim 13, characterized in that: The tail material lifting and placing mechanism (7) comprises a lifting drive structure (71) and a suction cup (72), wherein the lifting drive structure (71) is suitable for driving the suction cup (72) to approach or move away from the adsorption platform (21); the suction cup (72) is suitable for adsorbing a pole piece strip (100) on at least one of the adsorption platforms (21), and the suction cup (72) is formed with a through opening for allowing the upper knife (11) to pass through.

15. The film-making device according to claim 6, characterized in that: The cutting mechanism (1) further comprises a knife holder (13), the knife body driving assembly comprises a knife holder driving structure (14) and a knife body driving structure (18), the upper knife (11), the lower knife (12) and the knife body driving structure (18) are all arranged on the knife holder (13), the knife holder driving structure (14) is suitable for driving the knife holder (13) so that one of the upper knife (11) and the lower knife (12) reaches the cutting position, and the knife body driving structure (18) is suitable for driving the other of the upper knife (11) and the lower knife (12) to reach the cutting position.

16. The film-making device according to claim 15, characterized in that: The film-making device also includes a fixed seat (5), the tool holder (13) is slidably connected to the fixed seat (5), the tool holder driving structure (14) includes a linear driving part (141) and a movable seat (142), the movable seat (142) is slidably arranged on the fixed seat (5) and arranged opposite to the tool holder (13), the linear driving part (141) is transmission-connected to the movable seat (142), a side of the tool holder (13) facing the movable seat (142) and / or a side of the movable seat (142) facing the tool holder (13) is an inclined surface, and the inclined surface is inclined relative to the driving direction of the linear driving part (141) and the arrangement direction of the upper knife (11) and the lower knife (12), and a side of the tool holder (13) facing the movable seat (142) and a side of the movable seat (142) facing the tool holder (13) are slidably connected.

17. The film-making device according to claim 7, characterized in that: The knife body driving assembly comprises a servo motor (19) and a bidirectional screw rod (20); the upper knife (11) and the lower knife (12) are respectively connected to the bidirectional threads on the bidirectional screw rod (20); the servo motor (19) is suitable for driving the bidirectional screw rod (20) to rotate so that the upper knife (11) and the lower knife (12) move in opposite directions.

18. The film-making device according to claim 7, characterized in that: The knife body driving assembly comprises a servo motor (19), an upper knife cam (101), an upper knife connecting rod structure (102), a lower knife cam (103) and a lower knife connecting rod structure (104); the servo motor (19) is transmission-connected to the upper knife cam (101) and the lower knife cam (103); one end of the upper knife connecting rod structure (102) is movably connected to the peripheral wall of the upper knife cam (101); the other end of the upper knife connecting rod structure (102) is connected to the upper knife (11); one end of the lower knife connecting rod structure (104) is movably connected to the peripheral wall of the lower knife cam (103); and the other end of the lower knife connecting rod structure (104) is connected to the lower knife (12).

19. The film-making device according to claim 6, characterized in that: The knife body driving assembly is suitable for driving the upper knife (11) and the lower knife (12) to move in translation or rotation; and / or, The upper knife (11) and the lower knife (12) are suitable for shearing or punching the pole piece strip (100) to be cut at the cutting position.

20. The film-making device according to claim 6, characterized in that: The film-making device further comprises a dust collecting mechanism (6), wherein the dust collecting mechanism (6) has a dust collecting position close to the cutting channel (22); The dust collecting mechanism (6) comprises an upper dust collecting structure (61), wherein the upper dust collecting structure (61) has an upper dust collecting position; and / or the dust collecting mechanism (6) comprises a lower dust collecting structure (62), wherein the lower dust collecting structure (62) has a lower dust collecting position.

21. The film-making device according to claim 20, characterized in that: The upper dust collecting structure (61) is fixed to the upper dust collecting position, or the upper dust collecting structure (61) is movably arranged to be close to or away from the upper dust collecting position; and / or, The lower dust collecting structure (62) is fixed to the lower dust collecting position, or the lower dust collecting structure (62) is movably arranged to be close to or away from the lower dust collecting position.

22. The film-making device according to claim 21, characterized in that: The upper dust collecting structure (61) is connected to the upper knife (11), or the dust collecting mechanism (6) further comprises an upper dust collecting drive structure, and the upper dust collecting drive structure is drivingly connected to the upper dust collecting structure (61); and / or, The lower dust collecting structure (62) is connected to the lower knife (12), or the dust collecting mechanism (6) further comprises a lower dust collecting drive structure, and the lower dust collecting drive structure is connected to the lower dust collecting structure (62) in a transmission manner.

23. The film-making device according to claim 22, characterized in that: When the upper knife (11) and the lower knife (12) reach the cutting position, the upper dust collecting structure (61) reaches the upper dust collecting position, and when the upper knife (11) and the lower knife (12) leave the cutting position, the upper dust collecting structure (61) leaves the upper dust collecting position; and / or, When the upper knife (11) and the lower knife (12) reach the cutting position, the lower dust collecting structure (62) reaches the lower dust collecting position; when the upper knife (11) and the lower knife (12) leave the cutting position, the lower dust collecting structure (62) leaves the lower dust collecting position.

24. The film-making device according to claim 22, characterized in that: The upper dust collecting structure arrives at the upper dust collecting position before the upper knife (11) and the lower knife (12) arrive at the cutting position, and / or the upper dust collecting structure leaves the upper dust collecting position after the upper knife (11) and the lower knife (12) leave the cutting position; and / or, The lower dust collecting structure arrives at the lower dust collecting position before the upper knife (11) and the lower knife (12) arrive at the cutting position, and / or the lower dust collecting structure leaves the lower dust collecting position after the upper knife (11) and the lower knife (12) leave the cutting position.

25. The film-making device according to claim 20, characterized in that: At the cutting position, along the second direction, the upper knife (11) and the lower knife (12) have an upper abutting surface (113) and a lower abutting surface (123) that are arranged opposite to each other; the dust collecting mechanism (6) is arranged at least corresponding to one side of the upper abutting surface (113) and one side of the lower abutting surface (123).

26. The film-making device according to claim 25, characterized in that: The dust collecting mechanism (6) comprises an upper dust collecting portion (63) and a lower dust collecting portion (63), wherein the upper dust collecting portion (63) is arranged at least corresponding to one side of the upper abutting surface (113), and the lower dust collecting portion (63) is arranged at least corresponding to one side of the lower abutting surface (123); or, The dust collecting mechanism (6) comprises a dust suction part (63) and an air blowing part (64); at least one of the dust suction part (63) and the air blowing part (64) is arranged on one side of the upper abutting surface (113); at least one of the dust suction part (63) and the air blowing part (64) is arranged on one side of the lower abutting surface (123); and the dust suction part (63) is arranged opposite to the air blowing part (64) along a first direction.

27. The film-making device according to any one of claims 1 to 4, characterized in that: The adsorption platform (21) is provided with a blowing hole (211) on one side facing the cutting channel (22); and / or the adsorption platform (21) has an adsorption surface (212) for adsorbing the electrode strip (100), the adsorption surface (212) is provided with an adsorption hole (213) and an air blowing hole (211), and along the second direction, the air blowing hole (211) is located on two opposite sides of the adsorption hole (213).

28. The film-making device according to claim 27, characterized in that: The film-making device further comprises a positive pressure supply mechanism, the adsorption platform (21) is provided with a positive pressure channel, the positive pressure channel is connected to the blowing hole (211), and the positive pressure supply mechanism is suitable for providing positive pressure to the positive pressure channel; The positive pressure supply mechanism moves synchronously with the adsorption platform (21); or, the positive pressure supply mechanism is arranged on the lower knife (12) so that when the lower knife (12) moves along the first direction, the positive pressure supply mechanism is connected to or separated from the positive pressure channel.

29. A lamination device, characterized in that: include: Lamination table; The film making device according to any one of claims 1 to 28, arranged on the side of the laminating table; The electrode piece transport device is suitable for transporting the electrode piece single piece (200) cut on the film making table (2) to the film stacking table.

30. A battery production system, characterized in that: A film-making device comprising any one of claims 1 to 28, or a film-stacking device comprising the film-stacking device according to claim 29.

Images