Battery current collector micropore processing method and battery current collector production equipment

Abstract

The embodiment of the invention discloses a battery current collector micropore processing method and battery current collector production equipment, and the battery current collector micropore processing method comprises the following steps: driving one of a first cutter and a second cutter to move relative to the other, the first cutter is arranged in the cutting space, so that the first cutter can approach or deviate from the second cutter along a straight line in the first direction relative to the second cutter, and the first cutter can also reciprocate along a straight line in the second direction relative to the second cutter, so that the coiled material in the cutting space is processed into a metal net, and an included angle is formed between the first direction and the second direction; and through staggered movement of the first cutter and the second cutter, the material utilization rate of the coiled material can be increased, meanwhile, the mesh size and the wire diameter size are reduced, and then the forming quality of the metal net is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery current collectors, and in particular to a method for processing micropores of battery current collectors and battery current collector production equipment. Background Art

[0002] The battery current collector is an important component of the battery. It is responsible for carrying the positive and negative electrode materials, and collecting and outputting the current generated by the active materials during the charging and discharging process. The mesh size and wire diameter of the battery current collector mesh structure are important indicators for measuring the performance of the battery current collector material. Smaller mesh size and wire diameter can increase the contact area between the active material and the current collector and improve the electron transmission efficiency.

[0003] The mesh processing methods of battery current collectors mainly include chemical method, mechanical cutting method and laser method. The existing mechanical cutting method usually uses a stamping die, and the processing surface of the stamping die is evenly distributed with cutting blades. The metal coil is placed on the static die. After the dynamic die is closed relative to the static die, the metal coil is stamped into a mesh. However, the mesh size and wire diameter of the stamping die are relatively large. Summary of the invention

[0004] The purpose of the present invention is to propose a battery current collector micropore processing method and battery current collector production equipment, aiming to solve the problem that the mesh size and wire diameter size of existing stamping die forming are both large.

[0005] In a first aspect, the present invention provides a method for processing micropores of a battery current collector, the method comprising the following steps:

[0006] Providing a coil, a first cutting tool and a second cutting tool, wherein the first cutting edge of the first cutting tool is a flat cutting edge, and the second cutting edge of the second cutting tool is a toothed cutting edge;

[0007] conveying the coil into a cutting space formed by the first cutting tool and the second cutting tool;

[0008] Driving one of the first tool and the second tool to move relative to the other, so that the first tool can approach or move away from a straight line along a first direction relative to the second tool, and the first tool can also reciprocate relative to the straight line along a second direction relative to the second tool, so as to process the coil in the cutting space into a metal mesh, wherein the first direction and the second direction are arranged at an angle;

[0009] The coil is conveyed along a third direction in the cutting space, and the third direction is arranged at an angle to the first direction and the second direction.

[0010] In one embodiment, the step of enabling the first tool to approach the straight line along the first direction relative to the second tool specifically includes:

[0011] The first tool can approach the straight line along the first direction relative to the second tool, and make the second toothed edge partially overlap with the first flat edge so as not to cut the coil, and punch holes on the coil to deform it into a mesh structure.

[0012] In one embodiment, the step of conveying the coil along the third direction in the cutting space specifically includes:

[0013] conveying the coiled material along a third direction at a conveying speed;

[0014] The metal mesh is stretched and moved at a pre-stretching speed, and the pre-stretching speed is greater than the conveying speed.

[0015] In a second aspect, the present invention further provides a battery current collector production device, the battery current collector production device comprising:

[0016] A metal mesh processing device, the metal mesh processing device comprising a first tool, a second tool and a driving mechanism, wherein the first cutting edge of the first tool is a flat cutting edge, the second cutting edge of the second tool is toothed, the first tool and the second tool enclose a cutting space, the driving mechanism drives one of the first tool and the second tool to move relative to the other, so that the first tool can approach or depart from a straight line along a first direction relative to the second tool, and the first tool can also reciprocate relative to the straight line along a second direction relative to the second tool, so as to process a coil in the cutting space into a metal mesh, the first direction and the second direction are arranged at an angle; and

[0017] A feeding device is used to transport the coil along a third direction to the metal mesh processing device, and the third direction is set at an angle to the first direction and the second direction.

[0018] In one embodiment, the drive mechanism includes a first drive assembly and a second drive assembly;

[0019] The first drive assembly is mounted on the frame and connected to the second drive assembly, the second drive assembly is connected to the second tool, one of the first drive assembly and the second drive assembly is used to drive the second tool to reciprocate along a straight line in the first direction, and the other is used to drive the second tool to reciprocate along a straight line in the second direction;

[0020] Wherein, the first driving assembly and the second driving assembly are both linear motors.

[0021] In one of the embodiments, the metal mesh processing device further includes an adaptive structure;

[0022] A first mating surface is formed on a side of the first tool opposite to the second tool, and a second mating surface is formed on a side of the second tool opposite to the first tool, and the first mating surface and the second mating surface are guided and matched with each other and used to guide the second cutting edge of the second tool to move against the first cutting edge of the first tool;

[0023] The driving mechanism is connected to the second tool via the adaptive structure;

[0024] Among them, the adaptive structure includes a self-aligning bearing and an elastic support assembly, the movable end of the driving mechanism is movably connected to the second tool through the self-aligning bearing, and the movable end of the driving mechanism also elastically abuts against the second tool through the elastic support assembly so that the second mating surface fits against the first mating surface.

[0025] In one embodiment, the feeding device comprises a first feeding roller and a second feeding roller arranged opposite to each other, the coil is passed through the first feeding roller and the second feeding roller, and can convey the coil when at least one of the first feeding roller and the second feeding roller rotates;

[0026] The battery current collector production equipment also includes a pre-tensioning device, which is arranged on the carrier and located between the metal mesh processing device and the winding device. The pre-tensioning device includes a first pre-tensioning roller and a second pre-tensioning roller that are arranged opposite to each other. The metal mesh formed by the coil processing is passed through the first pre-tensioning roller and the second pre-tensioning roller, and can be pre-tensioned and flattened when at least one of the first pre-tensioning roller and the second pre-tensioning roller rotates.

[0027] Wherein, the pre-stretching speed of the metal mesh by the pre-stretching device is greater than the conveying speed of the coil by the feeding device.

[0028] In one embodiment, the battery current collector production equipment further includes:

[0029] A carrier frame, on which the metal mesh processing device and the feeding device are both arranged;

[0030] an unwinding device, the unwinding device being disposed on the carrier frame and located before the metal mesh processing device, the unwinding device being used to unwind the coil; and

[0031] A winding device is arranged on the supporting frame and is located behind the metal mesh processing device. The winding device is used to roll up the metal mesh.

[0032] In one embodiment, the winding device comprises:

[0033] A support frame, arranged on the bearing frame;

[0034] A material shaft, which is rotatably disposed on the support frame and is used to fix the material roll;

[0035] A driving mechanism, the driving mechanism is mounted on the support frame and is in driving connection with the material shaft so as to drive the material shaft to drive the material roll to rotate; and

[0036] A deviation correction mechanism, which is mounted on the support frame and is drivingly connected to the material shaft so as to be able to adjust the axial position of the material shaft and the material roll relative to the support frame;

[0037] Among them, the driving mechanism includes a first driving motor and a transmission shaft drivingly connected to the output shaft of the first driving motor, and the material shaft is slidably connected to the transmission shaft so that the end of the material shaft can be circumferentially positioned and axially moved relative to the transmission shaft.

[0038] In one embodiment, the metal mesh processing device further comprises a leveling structure, the leveling structure comprises an adjustment frame, a rotating shaft and an adjustment assembly, and the adjustment frame is mounted on the supporting frame;

[0039] The first tool is arranged on the adjustment frame, and the adjustment frame includes a rotating end and an adjusting end arranged opposite to each other. The rotating end is rotatably connected to the frame through the rotating shaft, so that the adjustment frame can drive the first tool to rotate around the axis of the rotating shaft. The adjustment component is installed on the frame and is used to adjust the position of the adjusting end relative to the frame, so that the first cutting edge of the first tool is parallel to the second cutting edge of the second tool.

[0040] The embodiments of the present invention have the following beneficial effects:

[0041] In the battery current collector micropore processing method of the present invention, the first cutting edge of the first tool is a flat cutting edge, and the second cutting edge of the second tool is toothed. One of the first tool and the second tool is driven to move relative to the other, so that the first tool can approach or move away from the straight line along the first direction relative to the second tool, and the first tool can also reciprocate relative to the straight line along the second direction relative to the second tool, so as to process the coil in the cutting space into a metal mesh. Through the staggered movement setting of the first tool and the second tool, the material utilization rate of the coil can be improved, while the mesh size and wire diameter size can be reduced, thereby improving the forming quality of the metal mesh.

[0042] In the battery current collector production equipment of the present invention, a driving mechanism drives one of the first tool and the second tool to move relative to the other, so that the first tool can approach or move away from the straight line along the first direction relative to the second tool, and the first tool can also reciprocate along the straight line along the second direction relative to the second tool, so as to process the coil in the cutting space into a metal mesh. Through the staggered movement setting of the first tool and the second tool, the material utilization rate of the coil can be improved, while the mesh size and wire diameter size can be reduced, thereby improving the forming quality of the metal mesh. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0044] in:

[0045] Figure 1 Schematic diagram of a battery current collector production device in one embodiment.

[0046] Figure 2 for Figure 1 Schematic diagram of the metal mesh processing device, feeding device and pre-tensioning device in the battery current collector production equipment shown.

[0047] Figure 3 for Figure 2 Another angle schematic diagram of the metal mesh processing device, feeding device and pre-tensioning device shown.

[0048] Figure 4 for Figure 1 Schematic diagram of the metal mesh processing device and feeding device in the battery current collector production equipment shown.

[0049] Figure 5 for Figure 4 Enlarged schematic diagram of part A in the middle.

[0050] Figure 6 for Figure 5 Partial top view of section A in the middle.

[0051] Figure 7 for Figure 4 A cross-sectional view of the metal mesh processing device and the feeding device shown.

[0052] Figure 8 for Figure 4 Another angle schematic diagram of the metal mesh processing device and the feeding device shown.

[0053] Fig. 9 for Figure 8 A top view of the metal mesh processing device and the feeding device is shown.

[0054] Fig.10 for Fig. 9 Middle BB section view.

[0055] Fig.11 for Fig.10 Enlarged view of middle part E.

[0056] Fig.12 for Fig. 9 Middle CC section view.

[0057] Fig.13 for Figure 2 Enlarged view of part F in the middle.

[0058] Fig.14 for Fig. 9 Middle DD section view.

[0059] Fig.15 for Figure 8 A partial schematic diagram of the metal mesh processing device and the feeding device shown.

[0060] Fig.16 Schematic diagram of a winding device in one embodiment.

[0061] Fig.17 for Fig.16 Another angle schematic diagram of the winding device shown.

[0062] Fig.18 for Fig.16 Exploded view of the wind-up device shown.

[0063] Fig.19 for Fig.16 A partial cross-sectional view of the winding device shown.

[0064] Fig. 20 Schematic diagram of a metal mesh processing device processing a coil to form a metal mesh according to an embodiment Figure 1 .

[0065] Fig.21 Schematic diagram of a metal mesh processing device processing a coil to form a metal mesh according to an embodiment Figure 2 .

[0066] Fig. 22 Schematic diagram of a metal mesh processing device processing a coil to form a metal mesh according to an embodiment Figure 3 .

[0067] Fig.23 Schematic diagram of tool alignment of a first tool and a second tool in a metal mesh processing device according to an embodiment Figure 1 .

[0068] Fig.24 Schematic diagram of tool alignment of a first tool and a second tool in a metal mesh processing device according to an embodiment Figure 2 .

[0069] Figure numbers: 10, material roll; 20, coil; 21, mesh structure; 100, winding device; 110, support frame; 120, material shaft; 121, plug connector; 130, material driving mechanism; 131, first driving motor; 132, transmission shaft; 133, accommodating groove; 135, coupling; 136, mounting frame; 140, deviation correction mechanism; 141, second driving motor; 142, first pulley; 143, transmission belt; 144, second pulley; 145, screw rod; 146, nut; 147, connecting piece; 148, shaft hole; 149, fixing frame; 150, sensor; 160, adjustment bracket; 161, fixing rod; 162, Sliding frame; 164, locking member; 165, adjusting rod; 166, adjusting slot; 170, over roller; 200, metal mesh processing device; 210, frame; 211, first rotating hole; 212, first fixing hole; 213, second fixing hole; 220, first tool; 221, first cutting edge; 222, first matching surface; 230, second tool; 231, second cutting edge; 232, second matching surface; 250, driving mechanism; 251, first driving assembly; 252, second driving assembly; 260, adaptive structure; 261, self-aligning bearing; 262, supporting member; 263, first frame; 264, second frame; 265, elastic member; 266, mounting groove; 267, gasket; 268, abutment member; 270, leveling structure; 271, adjustment frame; 2711, second rotating hole; 2712, first adjustment hole; 2713, second adjustment hole; 272, rotating shaft; 273, adjustment assembly; 2731, elastic module; 2732, fixed block; 2733, moving block; 2734, adjustment rod; 2735, hand wheel; 2736, first inclined surface; 2737, second inclined surface; 2738, push block; 2739, roller; 274, first adjustment member; 275, second adjustment member; 300, carrier; 400, unwinding device; 500, feeding device; 510 , the first feeding roller; 520, the second feeding roller; 530, the feeding motor; 540, the first guide roller; 550, the feeding rack; 560, the first clamping assembly; 600, the pre-tensioning device; 610, the first pre-tensioning roller; 620, the second pre-tensioning roller; 630, the pre-tensioning rack; 640, the pre-tensioning motor; 650, the second clamping assembly; 660, the pre-tensioning transmission assembly; 661, the first pre-tensioning pulley; 662, the pre-tensioning transmission belt; 663, the second pre-tensioning pulley; 670, the first pre-tensioning tooth; 680, the second pre-tensioning tooth; 700, the tension detection device; 710, the tension roller; 800, the position detection device; 900, the damping adjustment device; 910, the damping roller. DETAILED DESCRIPTION

[0070] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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 ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0071] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0072] In addition, the descriptions of "first", "second", etc. in the present invention are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0073] The embodiment of the present invention discloses a method for processing micropores of a battery current collector, which is mainly used to produce a metal mesh of a current collector to prepare a battery current collector. Figures 1 to 24 A method for processing micropores of a battery current collector according to an embodiment of the present invention comprises the following steps:

[0074] A coil 20, a first cutter 220 and a second cutter 230 are provided. The first cutting edge 221 of the first cutter 220 is a flat cutting edge, and the second cutting edge 231 of the second cutter 230 is tooth-shaped.

[0075] The coil 20 is transported to a cutting space formed by the first cutter 220 and the second cutter 230 .

[0076] Drive one of the first tool 220 and the second tool 230 to move relative to the other, so that the first tool 220 can approach or move away from the straight line along the first direction of the second tool 230, and the first tool 220 can also reciprocate relative to the straight line along the second direction of the second tool 230, so as to process the coil 20 in the cutting space into a metal mesh, and the first direction and the second direction are set at an angle.

[0077] The coil 20 is transported along a third direction in the cutting space, and the third direction is arranged at an angle with the first direction and the second direction.

[0078] It is understandable that, by setting the first cutter 220 and the second cutter 230 in a staggered motion, the material utilization rate of the coil 20 can be improved, while the mesh size and wire diameter can be reduced, thereby improving the forming quality of the metal mesh.

[0079] In one embodiment, the step of the first tool 220 being able to approach the straight line along the first direction relative to the second tool 230 specifically includes: the first tool 220 being able to approach the straight line along the first direction relative to the second tool 230, and making the toothed second cutting edge 231 partially overlap with the flat first cutting edge 221 so as not to cut the coil 20, and punching and deforming the coil 20 to form a mesh structure 21, thereby realizing the processing of the mesh structure 21.

[0080] In one embodiment, the step of conveying the coil 20 along the third direction in the cutting space specifically includes: conveying the coil 20 along the third direction at a conveying speed; stretching and moving the metal mesh at a pre-stretching speed, and the pre-stretching speed is greater than the conveying speed, so that the metal mesh can be stretched uniformly, making the mesh structure 21 on the metal mesh uniform, thereby ensuring the forming quality of the metal mesh.

[0081] See also Figures 1 to 24 The embodiment of the present invention also discloses a battery current collector production device, which includes a metal mesh processing device 200 and a feeding device 500. The metal mesh processing device 200 includes a first tool 220, a second tool 230 and a driving mechanism 250. The first cutting edge 221 of the first tool 220 is a flat cutting edge, and the second cutting edge 231 of the second tool 230 is toothed. The first tool 220 and the second tool 230 are enclosed to form a cutting space. The driving mechanism 250 drives one of the first tool 220 and the second tool 230 to move relative to the other, so that the first tool 220 can approach or depart from the straight line along the first direction of the second tool 230, and the first tool 220 can also reciprocate relative to the straight line along the second direction of the second tool 230, so as to process the coil 20 in the cutting space into a metal mesh, and the first direction is set at an angle to the second direction.

[0082] In this embodiment, the feeding device 500 is used to transport the coil 20 to the metal mesh processing device 200 along a third direction, and the third direction is set at an angle with the first direction and the second direction.

[0083] It is understandable that, by setting the first cutter 220 and the second cutter 230 in a staggered motion, the material utilization rate of the coil 20 can be improved, while the mesh size and wire diameter can be reduced, thereby improving the forming quality of the metal mesh.

[0084] Figure 20 to Figure 22 The arrow Z in the middle points to the third direction. As the feeding device 500 conveys the coil 20 to move along the third direction, the driving mechanism 250 drives the second cutter 230 to move relative to the first cutter 220 once, and forms a row of mesh structures 21 on the coil 20. At this time, the mesh structures 21 are triangular, as shown in FIG. Fig. 20 As shown, then, as the feeding device 500 conveys the coil 20 to continue to move along the third direction, the driving mechanism 250 drives the second cutter 230 to move relative to the first cutter 220 again, and forms another row of mesh structures 21 on the coil 20. At this time, the first row of mesh structures 21 are stretched into prismatic shapes, and the second row of mesh structures 21 are triangular shapes, as shown in FIG. Fig.21 As shown, the above steps are repeated and the coils are processed and shaped respectively. Fig. 22 shown.

[0085] Fig.23 and Fig.24 Schematic diagrams of tool setting of the first tool 220 and the second tool 230, respectively. Fig. 20 FIG. 2 is a schematic diagram showing that the second cutting edge 231 of the second tool 230 moves away from the first cutting edge 221 of the first tool 220. At this time, there is a gap between the second cutting edge 231 of the second tool 230 and the first cutting edge 221 of the first tool 220, through which the metal mesh can pass. Fig.21 The figure shows a schematic diagram of the movement of the second cutting edge 231 of the second tool 230 approaching the first cutting edge 221 of the first tool 220. At this time, the second cutting edge 231 of the second tool 230 and the first cutting edge 221 of the first tool 220 partially overlap, that is, the toothed second cutting edge 231 partially overlaps with the flat-edged first cutting edge 221, but the coil is not cut yet, so that holes are punched and deformed on the coil to form a mesh structure 21.

[0086] In one embodiment, see Figures 8 to 15 The driving mechanism 250 includes a first driving assembly 251 and a second driving assembly 252; the first driving assembly 251 is installed on the frame 210 and connected to the second driving assembly 252, and the second driving assembly 252 is connected to the second tool 230. One of the first driving assembly 251 and the second driving assembly 252 is used to drive the second tool 230 to reciprocate along the straight line in the first direction, and the other is used to drive the second tool 230 to reciprocate along the straight line in the second direction, so as to realize the dislocation movement of the first tool 220 and the second tool 230. The tool alignment movement of the first tool 220 and the second tool 230 can improve the material utilization rate of the coil 20 and reduce the mesh size and wire diameter size. Specifically, the first driving assembly 251 and the second driving assembly 252 are both linear motors.

[0087] In one embodiment, the metal mesh processing device 200 further includes an adaptive structure 260; a first mating surface 222 is formed on the side of the first tool 220 relative to the second tool 230, and a second mating surface 232 is formed on the side of the second tool 230 relative to the first tool 220. The first mating surface 222 and the second mating surface 232 are guided and matched, and are used to guide the second cutting edge 231 of the second tool 230 to move in alignment with the first cutting edge 221 of the first tool 220, thereby ensuring the tool alignment accuracy and facilitating the improvement of the material utilization rate of the coil 20. The driving mechanism 250 is connected to the second tool 230 through the adaptive structure 260, thereby facilitating the cutting and punching of the coil 20 to form the mesh structure 21.

[0088] It is understandable that since there will still be a tool alignment error between the first tool 220 and the second tool 230 after they are assembled, the second tool 230 is movably connected to the drive mechanism 250 through the self-aligning bearing 261 and the elastic support assembly, so that the second tool 230 can adapt to the tool alignment with the first tool 220 to eliminate the tool alignment error.

[0089] In this embodiment, the adaptive structure 260 includes a self-aligning bearing 261 and an elastic support assembly. The movable end of the driving mechanism 250 is movably connected to the second tool 230 via the self-aligning bearing 261. The movable end of the driving mechanism 250 also elastically abuts against the second tool 230 via the elastic support assembly so that the second mating surface 232 fits against the first mating surface 222, thereby enabling the second tool 230 to adapt to the first tool 220 for tool alignment, eliminating tool alignment errors, and thereby ensuring the tool alignment accuracy of the metal mesh processing device 200 to form a more uniform mesh structure 21 on the metal mesh.

[0090] It is understandable that since there will still be a tool alignment error between the first tool 220 and the second tool 230 after they are assembled, the second tool 230 is movably connected to the drive mechanism 250 through the self-aligning bearing 261 and the elastic support assembly, so that the second tool 230 can adapt to the tool alignment with the first tool 220 to eliminate the tool alignment error.

[0091] Furthermore, the first mating surface 222 is arranged in parallel with the second mating surface 232. Therefore, when the driving mechanism 250 drives the second tool 230 to move relative to the first tool 220, the movement of the second tool 230 relative to the first tool 220 will produce motion errors, thereby affecting the tool alignment accuracy of the second tool 230 relative to the first tool 220.

[0092] By setting the self-aligning bearing 261, the second tool 230 can be fixed relative to the driving mechanism 250 in a plane parallel to the first mating surface 222, but can pitch and roll around the self-aligning bearing 261, thereby eliminating the error in the guided movement of the second mating surface 232 and the first mating surface 222. At the same time, by the support setting of the elastic support component, the elastic support component is in point contact with the bottom of the second tool 230, thereby facilitating the pitch and roll movement of the second tool 230, which is conducive to eliminating the movement error, thereby ensuring the tool alignment accuracy of the second tool 230 and the first tool 220, so as to form a more uniform mesh structure 21 on the metal mesh.

[0093] In one embodiment, the adaptive structure 260 also includes a connecting frame, which includes a first frame body 263 located on the side of the second tool 230, and a second frame body 264 located at the bottom of the second tool 230; two second frames 264 are provided, and are respectively arranged on both sides of the first frame body 263, and two groups of elastic support components are provided, and are respectively arranged on the second frames 264 in a one-to-one manner; the first frame body 263 is movably connected to the side of the second tool 230 through a self-aligning bearing 261, and the elastic support component is arranged on the second frame body 264, and is located between the bottom of the second tool 230 and the second frame body 264.

[0094] Through such an arrangement, the self-aligning bearing 261 can support the second tool 230 to be fixed relative to the driving mechanism 250 in a plane parallel to the first mating surface 222, but can pitch and roll around the self-aligning bearing 261, thereby eliminating the error in guiding the movement between the second mating surface 232 and the first mating surface 222.

[0095] At the same time, through such an arrangement, the elastic support components are symmetrically arranged on both sides of the second tool 230, which can ensure the reliability of the support of the elastic support components. The elastic support components can make point contact with the bottom of the second tool 230, thereby facilitating the support of the second tool 230 in pitching and elevating motion, thereby facilitating the elimination of motion errors, thereby ensuring the tool alignment accuracy between the second tool 230 and the first tool 220, so as to form a more uniform mesh structure 21 on the metal mesh.

[0096] In one embodiment, the adaptive structure 260 also includes a connecting rod, the outer ring of the self-aligning bearing 261 is fixed to the second tool 230, one end of the connecting rod is fixed to the first frame 263, and the other end is clearance-matched with the inner ring of the self-aligning bearing 261 so that the inner ring can slide along the axial direction of the connecting rod. Through such a setting, in a plane perpendicular to the axis of the connecting rod, that is, in a plane where the first mating surface 222 is located, the self-aligning bearing 261 can support the second tool 230 relative to the driving mechanism 250 and be fixed in a plane parallel to the first mating surface 222, but the second tool 230 can pitch and roll with the self-aligning bearing 261 as the center, and the second tool 230 can slide along the axial direction of the connecting rod, thereby eliminating the error in guiding the movement of the second mating surface 232 and the first mating surface 222.

[0097] Specifically, a plurality of self-aligning bearings 261 are provided and spaced apart along the side of the second cutter 230 to ensure the stability and reliability of the movable connection. Specifically, two self-aligning bearings 261 are provided. Of course, in other embodiments, the number of self-aligning bearings 261 can be three or more as needed.

[0098] In one embodiment, the elastic support assembly includes a support member 262 and an elastic member 265. The second frame 264 is provided with a mounting groove 266. The elastic member 265 is accommodated in the mounting groove 266 and elastically connected to the support member 262 so as to be able to push the universal ball of the support member 262 to abut against the bottom of the second tool 230. Through the provision of the elastic member 265, the support member 262 can be elastically abutted against the bottom of the second tool 230, so as to facilitate the pitching movement of the second tool 230 to eliminate the motion error during tool setting.

[0099] In this embodiment, the adaptive structure 260 further includes a gasket 267 and abutment member 268. The gasket 267 is accommodated in the installation groove 266. The elastic member 265 elastically abuts against the gasket 267 and the support member 262. The abutment member 268 penetrates the second frame 264 and is threadedly connected to the second frame 264. The abutment member 268 extends into the installation groove 266 and abuts against the gasket 267. By such a configuration, the elastic capacity of the elastic member 265 can be adjusted by operating the abutment member 268, thereby adjusting the strength of the elastic abutment between the support member 262 and the bottom of the second tool 230, thereby ensuring that the second mating surface 232 of the second tool 230 and the first mating surface 222 of the first tool 220 are closely fitted with the preload force, so as to ensure the tool alignment accuracy of the second tool 230 and the first tool 220.

[0100] Specifically, the support member 262 is a bull's eye bearing, and each group of the elastic support components is provided with a plurality of the elastic support components, thereby ensuring the stability and reliability of the elastic support for the second tool 230. Specifically, each group of the elastic support components is provided with two elastic support components. Of course, in other embodiments, the number of the elastic support components can be set to three or more as needed.

[0101] In one embodiment, the feeding device 500 includes a first feeding roller 510 and a second feeding roller 520 that are relatively arranged, and the coil 20 is passed through the first feeding roller 510 and the second feeding roller 520, and can convey the coil 20 when at least one of the first feeding roller 510 and the second feeding roller 520 rotates; the battery current collector production equipment also includes a pre-tensioning device, which is arranged on the supporting frame 300 and is located between the metal mesh processing device 200 and the winding device 100. The pre-tensioning device includes a first pre-tensioning roller 610 and a second pre-tensioning roller 620 that are relatively arranged. The metal mesh formed by the processing of the coil 20 is passed between the first pre-tensioning roller 610 and the second pre-tensioning roller 620, and can pre-tension and flatten the metal mesh when at least one of the first pre-tensioning roller 610 and the second pre-tensioning roller 620 rotates.

[0102] In this embodiment, the pre-stretching speed of the metal mesh by the pre-stretching device 600 is greater than the conveying speed of the coil 20 by the feeding device 500, so that the metal mesh can be stretched evenly, making the mesh structure 21 on the metal mesh uniform, thereby ensuring the molding quality of the metal mesh.

[0103] In one embodiment, the battery current collector production equipment also includes a tension detection device 700, which is arranged on the support frame 300 and is located between the feeding device 500 and the pre-tensioning device, and is distributed in a triangular shape with the feeding device 500 and the pre-tensioning device; the tension detection device 700 includes a tension roller 710 and a tension detector, the tension roller 710 is used to guide the metal mesh, the tension detector is arranged on the tension roller 710, and is used to sense the pressure value of the metal mesh, thereby judging the tension on the metal mesh.

[0104] Specifically, the pre-tensioning device also includes a controller. When the tension detector detects that the tension is too large, the controller can control the power of the pre-tensioning motor to decrease, reduce the rotational motion rate of the pre-tensioning motor, and thus reduce the tension on the metal mesh.

[0105] It can be understood that since the pre-stretching speed of the metal mesh by the pre-stretching device 600 is greater than the conveying speed of the coil 20 by the feeding device 500, the pre-stretching device 600 pulls the metal mesh quickly and the feeding device 500 conveys the coil 20 slowly, resulting in a speed difference. The pre-stretching device 600 can stretch the metal mesh. When the tension detector detects that the tension is too large, it is necessary to reduce the speed difference to avoid the metal mesh from being broken, and keep the tension of the coil 20 in the metal mesh processing device 200 within a preset range to support the metal mesh processing device 200 to cut and stamp the coil 20 to form a mesh structure 21.

[0106] In one embodiment, the pre-tensioning device further includes a first guide roller 540, which is disposed before the feeding device 500 and is used to guide the coil 20 to be transported between the first feeding roller 510 and the second feeding roller 520, thereby facilitating the transport of the coil 20 along a preset trajectory.

[0107] In one embodiment, the feeding device 500 also includes a feeding rack 550 and a feeding motor 530, the first feeding roller 510 and the second feeding roller 520 are both rotatably arranged on the feeding rack 550, the feeding motor 530 is transmission-connected to the first feeding roller 510, and is used to drive the first feeding roller 510 to rotate; the feeding device 500 also includes a first clamping assembly 560, the second feeding roller 520 is installed on the feeding rack 550 through the first clamping assembly 560, and the first clamping assembly 560 can release or clamp the second feeding roller 520 so that the second feeding roller 520 and the first feeding roller 510 are clearance-fitted or abutt-fitted.

[0108] By such an arrangement, the first clamping assembly 560 can release the second feed roller 520 so that the second feed roller 520 and the first feed roller 510 can be matched with each other in a clearance, making it easy for the operator to insert the coil 20 into the gap between the second feed roller 520 and the first feed roller 510 to complete the loading and installation of the coil 20.

[0109] The first clamping assembly 560 can also clamp the second feed roller 520 to make the second feed roller 520 abut against the first feed roller 510, so that when the first feed roller 510 rotates, it can drive the coil 20 to be transported. At the same time, the second feed roller 520 rotates passively to improve the reliability and smoothness of the transportation of the coil 20.

[0110] Specifically, the first clamping assembly 560 is an eccentric clamp, and two of them are provided; the two first clamping assemblies 560 are respectively provided at the two axial ends of the second feeding roller 520, and by operating the eccentric clamp, it is convenient to switch between the clearance fit or the abutment fit between the second feeding roller 520 and the first feeding roller 510. Of course, in other embodiments, the first clamping assembly 560 can also be a screw-screw abutment clamp, and the setting type and quantity of the first clamping assembly 560 can be adjusted according to specific needs.

[0111] In one embodiment, the pre-tensioning device 600 also includes a pre-tensioning frame 630 and a pre-tensioning motor 640, the first pre-tensioning roller 610 and the second pre-tensioning roller 620 are both rotatably arranged on the pre-tensioning frame 630, the pre-tensioning motor 640 is transmission-connected to the first pre-tensioning roller 610, and is used to drive the first pre-tensioning roller 610 to rotate; the pre-tensioning device 600 also includes a second clamping assembly 650, the second pre-tensioning roller 620 is installed on the pre-tensioning frame 630 through the second clamping assembly 650, and the second clamping assembly 650 can release or clamp the second pre-tensioning roller 620 so that the second pre-tensioning roller 620 and the first pre-tensioning roller 610 are gap-fitted or abutt-fitted.

[0112] Through such an arrangement, the second clamping assembly 650 can release the second pre-stretching roller 620 so that the second pre-stretching roller 620 and the first pre-stretching roller 610 can be matched with each other in a clearance, making it convenient for the operator to insert the coil 20 into the gap between the second pre-stretching roller 620 and the first pre-stretching roller 610 to complete the loading and installation of the coil 20.

[0113] The second clamping assembly 650 can also clamp the second pre-tensioning roller 620 to make the second pre-tensioning roller 620 abut against the first pre-tensioning roller 610 , so that when the first pre-tensioning roller 610 rotates, the coil 20 can be driven for transportation.

[0114] Specifically, the second clamping assembly 650 is an eccentric clamp, and two of them are provided; the two second clamping assemblies 650 are respectively provided at the two axial ends of the second pre-tensioning roller 620, and by operating the eccentric clamp, it is convenient to switch between the clearance fit or the abutment fit between the second pre-tensioning roller 620 and the first pre-tensioning roller 610. Of course, in other embodiments, the second clamping assembly 650 can also be a screw-screw abutment clamp, and the setting type and quantity of the second clamping assembly 650 can be adjusted according to specific needs.

[0115] In one embodiment, the pre-tensioning device 600 also includes a pre-tensioning transmission assembly 660, and the pre-tensioning motor 640 is transmission-connected to the first pre-tensioning roller 610 through the pre-tensioning transmission assembly 660. The pre-tensioning motor 640 is installed on the pre-tensioning frame 630 and is located on the inner side of the pre-tensioning frame 630; the pre-tensioning transmission assembly 660 includes a first pre-tensioning pulley 661, a pre-tensioning transmission belt 662 and a second pre-tensioning pulley 663. The first pre-tensioning pulley 661 is rotatably arranged on the outer side of the pre-tensioning frame 630 and is coaxially connected to the pre-tensioning motor 640. The second pre-tensioning pulley 663 is rotatably arranged on the outer side of the pre-tensioning frame 630 and is coaxially connected to the first pre-tensioning roller 610. The pre-tensioning transmission belt 662 is wound between the first pre-tensioning pulley 661 and the second pre-tensioning pulley 663, thereby realizing the pre-tensioning conveyance of the metal mesh by the second pre-tensioning roller 620 and the first pre-tensioning roller 610.

[0116] It is understandable that the rotational motion rate of the pre-tensioning motor 640 delivered to the first pre-tensioning roller 610 can be adjusted by changing the pulley size between the first pre-tensioning pulley 661 and the second pre-tensioning pulley 663. Since the pre-tensioning motor 640 is installed on the pre-tensioning frame 630 and located inside the pre-tensioning frame 630, it is convenient to realize the miniaturization design of the pre-tensioning device 600.

[0117] In one embodiment, the pre-tensioning device 600 also includes a first pre-tensioning tooth 670 and a second pre-tensioning tooth 680; the first pre-tensioning tooth 670 is rotatably arranged on the outer side of the pre-tensioning frame 630 and is coaxially connected to the first pre-tensioning roller 610, and the second pre-tensioning tooth 680 is rotatably arranged on the outer side of the pre-tensioning frame 630 and is coaxially connected to the second pre-tensioning roller 620, and the first pre-tensioning tooth 670 and the second pre-tensioning tooth 680 are meshed.

[0118] Through such an arrangement, the second pre-tensioning roller 620 and the first pre-tensioning roller 610 are both active rollers, and the second pre-tensioning roller 620 and the first pre-tensioning roller 610 rotate simultaneously, which facilitates the stable and reliable transportation of the metal mesh and realizes its pre-tensioning and flattening effects.

[0119] In one embodiment, the battery current collector production equipment also includes a position detection device 800, which is arranged on the carrier 300 and is located between the unwinding device 400 and the feeding device 500, and is used to sense the conveying position of the coil 20, so that when the coil 20 is offset, an alarm or correction can be issued.

[0120] In one embodiment, the battery current collector production equipment also includes a damping adjustment device 900, which is arranged on the support frame 300 and is located between the unwinding device 400 and the feeding device 500. The damping adjustment device 900 is a damping roller 910, and the coil 20 is wound around the damping roller 910, so that the transportation of the coil 20 is stable and reliable.

[0121] In one embodiment, the battery current collector production equipment also includes a carrier frame 300, a unwinding device 400 and a winding device 100, and the metal mesh processing device 200 and the feeding device 500 are both arranged on the carrier frame 300; the unwinding device 400 is arranged on the carrier frame 300 and is located before the metal mesh processing device 200, and the unwinding device 400 is used to unwind the coil 20; the winding device 100 is arranged on the carrier frame 300 and is located after the metal mesh processing device 200, and the winding device 100 is used to wind up the metal mesh, thereby realizing the automated production of the metal mesh with high production efficiency.

[0122] In one embodiment, the winding device 100 includes a support frame 110, a material shaft 120, a material driving mechanism 130 and a correcting mechanism 140, wherein the support frame 110 is arranged on the carrier frame 300; the material shaft 120 is rotatably arranged on the support frame 110 and is used to fix the material roll 10; the material driving mechanism 130 is installed on the support frame 110 and is transmission-connected with the material shaft 120 so as to be able to drive the material shaft 120 to drive the material roll 10 to rotate; the correcting mechanism 140 is installed on the support frame 110 and is transmission-connected with the material shaft 120 so as to be able to adjust the axial position of the material shaft 120 and the material roll 10 relative to the support frame 110.

[0123] In this embodiment, the material drive mechanism 130 includes a first drive motor 131, and a transmission shaft 132 that is transmission-connected to the output shaft of the first drive motor 131. The material shaft 120 is slidably connected to the transmission shaft 132 so that the end of the material shaft 120 can be circumferentially positioned and axially moved relative to the transmission shaft 132. The inherent structures of the material shaft 120 and the transmission shaft 132 are used to limit the deviation-correcting movement trajectory of the material shaft, thereby reducing the setting of the track mechanism, facilitating the miniaturization of the reeling and unwinding device 400, and further facilitating the spatial arrangement of the reeling and unwinding device 400 on the battery current collector production equipment.

[0124] Specifically, the structure of the unwinding device 400 may be the same as or different from that of the rewinding device 100. When the structure of the unwinding device 400 may be different from that of the rewinding device 100, the unwinding device 400 may only include the support frame 110, the material shaft 120 and the deviation correction mechanism 140, and in this case, the material shaft 120 is a secondary feed shaft.

[0125] In one embodiment, one of the transmission shaft 132 and the material shaft 120 is provided with a receiving groove 133, and the other is formed with a plug connector 121, and one of the groove wall of the receiving groove 133 and the plug connector 121 is provided with a key protrusion, and the other is provided with a key slot; the plug connector 121 is inserted into the receiving groove 133 and can move axially relative to the support frame 110, and the key protrusion is circumferentially abutted against the groove wall of the key slot so as to be able to transmit the rotational motion of the transmission shaft 132 to the material shaft 120 and the material roll 10. By setting the matching relationship between the transmission shaft 132 and the material shaft 120 in this way, not only can the rotational motion of the first drive motor 131 be transmitted to the material shaft 120, thereby driving the material shaft 120 to rotate to perform the winding and unwinding action, but also the inherent structure of the material shaft 120 and the transmission shaft 132 can be used to limit the deviation correction movement trajectory of the material shaft 120.

[0126] Specifically, a receiving groove 133 is provided on the transmission shaft 132, a plug connector 121 is formed at the end of the material shaft 120, a key protrusion extending in the axial direction is formed on the groove wall of the receiving groove 133, and a key groove extending in the axial direction is provided on the outer peripheral wall of the plug connector 121, so that the material shaft 120 can not only move axially relative to the transmission shaft 132 for axial correction, but also accept the rotational motion transmitted by the transmission shaft 132 to drive the material shaft 120 and the material roll 10 to rotate.

[0127] In one embodiment, the material driving mechanism 130 further includes a coupling 135 , which transmission-connects the output shaft of the first driving motor 131 and the transmission shaft 132 , thereby ensuring the stability and reliability of the first driving motor 131 transmitting the rotational motion to the transmission shaft 132 .

[0128] In one embodiment, the material drive mechanism 130 further includes a mounting frame 136, the mounting frame 136 is fixedly mounted on the support frame 110, the transmission shaft 132 and the material shaft 120 are both rotatably mounted on the mounting frame 136, and the first drive motor 131 is fixedly mounted on the mounting frame 136, thereby realizing the installation of various components. It is understandable that a plurality of bearings are provided in the winding device 100, thereby supporting the stability and reliability of the rotation of rotatable components such as the transmission shaft 132 and the material shaft 120.

[0129] In one embodiment, the correction mechanism 140 includes a second drive motor 141, a first pulley 142, a transmission belt 143, a second pulley 144, a screw rod 145, a nut 146 and a connecting piece 147; the screw rod 145 is provided with an axial hole 148, and is sleeved on the transmission shaft 132 so that the transmission shaft 132 can rotate relative to the screw rod 145, the nut 146 is sleeved on the outer wall of the screw rod 145, and is threadedly connected to the screw rod 145, and the connecting piece 147 connects the nut 146 and the material shaft 120; the first pulley 142 is fixed to the output shaft of the second drive motor 141, the second pulley 144 is sleeved on the outer wall of the screw rod 145, and the transmission belt 143 is wound between the first pulley 142 and the second pulley 144.

[0130] With such an arrangement, the second drive motor 141 can transmit the rotational motion to the first pulley 142, the first pulley 142 can transmit the rotational motion to the second pulley 144 through the transmission belt 143, the second pulley 144 can drive the screw rod 145 to rotate, thereby driving the nut 146 to move axially, and the axial movement of the nut 146 can drive the connecting piece 147, the material shaft 120 and the material roll 10 to move axially relative to the support frame 110, thereby realizing the correction of the deviation of the material roll 10.

[0131] Specifically, the deviation correction mechanism 140 further includes a fixing frame 149 , and the second drive motor 141 is fixed to the mounting frame 136 via the fixing frame 149 , thereby realizing the installation of the second drive motor 141 .

[0132] In one embodiment, the winding device 100 further includes a sensor 150 and an adjustment bracket 160. The sensor 150 is installed on the support frame 110 through the adjustment bracket 160 and is used to sense the coiled material on the material roll 10. The deviation correction mechanism 140 is set to monitor the position of the coiled material in real time. Once the position deviation is found, the deviation correction adjustment is immediately performed. This real-time performance not only ensures the continuity and stability of the coiling and unwinding, but also reduces the equipment downtime caused by the deviation of the coil position, thereby improving the utilization rate and production efficiency of the equipment. Specifically, the sensor 150 is an electric eye.

[0133] In this embodiment, the adjustment bracket 160 includes a fixed rod 161, a sliding frame 162, an adjustment piece, a locking piece 164 and an adjustment rod 165. The fixed rod 161 is fixed to the support frame 110, the sliding frame 162 is sleeved on the fixed rod 161, and can move axially relative to the fixed rod 161. The adjustment piece passes through the sliding frame 162 and abuts against the fixed rod 161 to lock the axial position of the sliding frame 162 relative to the fixed rod 161. An adjustment groove 166 is provided at one end of the adjustment rod 165, and a sensor 150 is fixed at the other end. The locking piece 164 is passed through any position of the adjustment groove 166 and is detachably connected to the sliding frame 162 to adjust the position of the sensor 150 relative to the support frame 110.

[0134] By such arrangement, the position of the sensor 150 relative to the support frame 110 and the coil can be flexibly adjusted, so that the sensor 150 can sense the coiled material on the roll 10. Specifically, the winding device 100 further includes a roller 170, which is rotatably arranged on the support frame 110 to control the extension trajectory of the coiled material.

[0135] In one embodiment, the winding device 100 further includes a hand-increasing shaft, which is sleeved on the material shaft 120 and is used to fix and release the material roll.

[0136] In one embodiment, the metal mesh processing device 200 also includes a leveling structure 270, which includes an adjusting frame 271, a rotating shaft 272 and an adjusting assembly 273. The adjusting frame 271 is installed on the supporting frame 300; the first tool 220 is arranged on the adjusting frame 271, and the adjusting frame 271 includes a rotating end and an adjusting end that are relatively arranged. The rotating end is rotatably connected to the frame 210 through the rotating shaft 272, so that the adjusting frame 271 can drive the first tool 220 to rotate around the axis of the rotating shaft 272. The adjusting assembly 273 is installed on the frame 210 and is used to adjust the position of the adjusting end relative to the frame 210, so that the first cutting edge 221 of the first tool 220 is parallel to the second cutting edge 231 of the second tool 230, thereby ensuring the tool setting accuracy of the metal mesh processing device 200 to form a more uniform mesh structure 21 on the metal mesh.

[0137] In one embodiment, a first rotating hole 211 is provided on the frame 210, and a second rotating hole 2711 corresponding to the first rotating hole 211 is provided on the adjusting frame 271. One end of the rotating shaft 272 is accommodated in the first rotating hole 211, and the other end is accommodated in the second rotating hole 2711, so that the adjusting frame 271 is rotatably connected to the frame 210, thereby using one end of the adjusting frame 271 as a rotating axis.

[0138] Furthermore, in this embodiment, a first fixing hole 212 is provided on the frame 210, and a first adjusting hole 2712 corresponding to the first fixing hole 212 is provided on the adjusting frame 271, and the first adjusting hole 2712 extends in a strip or arc shape; by such a setting, the arc rotation of the adjusting frame 271 can be adapted.

[0139] Specifically, the metal mesh processing device 200 also includes a first adjusting member 274, and the first adjusting hole 2712 is penetrated at any position of the first adjusting hole 2712 and is detachably connected to the first fixing hole 212, so as to facilitate fixing and locking the adjusted adjustment frame 271 on the frame 210, thereby ensuring the position accuracy of the first tool 220.

[0140] Specifically, the adjustment component 273 includes an elastic module 2731 and an adjustment module; the elastic module 2731 and the adjustment module are respectively arranged on both sides of the adjustment end, the elastic module 2731 is installed on the frame 210 and elastically connected to the adjustment end, the adjustment module is installed on the frame 210, and is used to abut the adjustment end to move close to the elastic module 2731, and the elastic module 2731 is elastically compressed. Through such an arrangement, the adjustment module can adjust the rotation position of the adjustment frame 271 relative to the frame 210, thereby driving the first cutting edge 221 of the first tool 220 and the second cutting edge 231 of the second tool 230 to be parallel, thereby ensuring the tool setting accuracy of the metal mesh processing device 200, so as to form a more uniform mesh structure 21 on the metal mesh.

[0141] It is understandable that after the adjusting module releases the adjusting frame 271 , the adjusting frame 271 can be reset under the elastic force of the elastic module 2731 , so that the rotation position of the adjusting frame 271 relative to the frame 210 can be flexibly adjusted.

[0142] Further, the adjustment module is an electric adjustment module, and the manual adjustment module includes a fixed block 2732, a moving block 2733, an adjustment rod 2734 and a hand wheel 2735; the fixed block 2732 is installed on the frame 210, a threaded hole is provided on the fixed block 2732, the adjustment rod 2734 is passed through the threaded hole and is threadedly connected with the fixed block 2732, and the hand wheel 2735 is provided at the end of the adjustment rod 2734, and the rotation of the hand wheel 2735 can drive the adjustment rod 2734 to rotate, so that the adjustment rod 2734 pushes the moving block 2733 to abut against the adjustment end and move close to the elastic module 2731. Through such a setting, the screw and nut adjustment structure can be used to realize the position movement of the moving block 2733, thereby adjusting the rotation position of the adjustment frame 271 relative to the frame 210.

[0143] In this embodiment, in order to further improve the leveling accuracy of the first cutting edge 221 of the first tool 220 and the second cutting edge 231 of the second tool 230, a first inclined surface 2736 is provided on the side of the fixed block 2732 relative to the movable block 2733, and a second inclined surface 2737 is provided on the side of the movable block 2733 relative to the fixed block 2732, and the first inclined surface 2736 and the second inclined surface 2737 are slidably matched; a pushing block 2738 is provided on the adjusting rod 2734, and the pushing block 2738 abuts against the moving block 2733 to move, so that the moving block 2733 can slide relative to the fixed block 2732 along the extension trajectory of the first inclined surface 2736, and the moving block 2733 abuts against the adjustment end to move close to the elastic module 2731. Through such an arrangement, on the basis of the adjustment accuracy of each thread of the threaded structure, the first inclined surface 2736 and the second inclined surface 2737 can be introduced to cooperate with each other to further improve the displacement accuracy of the moving block 2733, thereby increasing the rotation position accuracy of the adjustment frame 271 relative to the frame 210. Therefore, it can be further ensured that the first cutting edge 221 of the first tool 220 is parallel to the second cutting edge 231 of the second tool 230, thereby ensuring the tool alignment accuracy of the metal mesh processing device 200, so as to form a more uniform mesh structure 21 on the metal mesh.

[0144] Specifically, the manual adjustment module also includes a roller 2739, which is rotatably connected to the adjustment end and rollingly cooperates with the moving block 2733, so that the surface cooperation between the moving block 2733 and the adjustment frame 271 can be changed to a rolling cooperation, thereby improving the leveling smoothness and accuracy of the first cutting edge 221 of the first tool 220 and the second cutting edge 231 of the second tool 230.

[0145] Of course, in other embodiments, the adjustment module can also be selected as an electric adjustment module, which includes a fixed block, a moving block, an adjustment rod and an adjustment motor; the fixed block is installed on the frame, a threaded hole is provided on the fixed block, the adjustment rod is passed through the threaded hole and is threadedly connected to the fixed block, the adjustment motor is transmission-connected to the adjustment rod, and is used to drive the adjustment rod to rotate, so that the adjustment rod pushes the moving block to abut the adjustment end and move close to the elastic module. Compared with the manual adjustment module, the electric adjustment module has higher adjustment accuracy, but the cost will also increase. Furthermore, the adjustment motor can be selected as a servo motor or a stepper motor.

[0146] In one embodiment, the frame 210 is further provided with a second fixing hole 213, and the adjusting frame 271 is further provided with a second adjusting hole 2713 corresponding to the second fixing hole 213, and the second adjusting hole 2713 extends in a strip or arc shape; by such a setting, the arc rotation of the adjusting frame 271 can be adapted.

[0147] Specifically, the metal mesh processing device 200 also includes a second adjusting member 275, and the second adjusting hole 2713 is penetrated at any position of the second adjusting hole 2713 and is detachably connected to the second fixing hole 213, so as to facilitate fixing and locking the adjusted adjustment frame 271 on the frame 210, thereby ensuring the position accuracy of the first tool 220.

[0148] In one embodiment, the unwinding device 400, the feeding device 500, the pre-tensioning device and the winding device 100 are arranged around the metal mesh processing device 200, so as to facilitate the miniaturized spatial arrangement of the battery current collector production equipment.

[0149] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for processing micropores of a battery current collector, characterized in that: The battery current collector micropore processing method comprises the following steps: Providing a coil, a first cutting tool and a second cutting tool, wherein the first cutting edge of the first cutting tool is a flat cutting edge, and the second cutting edge of the second cutting tool is a toothed cutting edge; conveying the coil into a cutting space formed by the first cutting tool and the second cutting tool; Driving one of the first tool and the second tool to move relative to the other, so that the first tool can approach or move away from a straight line along a first direction relative to the second tool, and the first tool can also reciprocate relative to the straight line along a second direction relative to the second tool, so as to process the coil in the cutting space into a metal mesh, wherein the first direction and the second direction are arranged at an angle; The coil is conveyed along a third direction in the cutting space, and the third direction is arranged at an angle to the first direction and the second direction.

2. The battery current collector micropore processing method according to claim 1, characterized in that: The step of enabling the first tool to approach the second tool along a straight line in a first direction specifically includes: The first tool can approach the straight line along the first direction relative to the second tool, and make the second toothed edge partially overlap with the first flat edge so as not to cut the coil, and punch holes on the coil to deform it into a mesh structure.

3. The battery current collector micropore processing method according to claim 1, characterized in that: The step of conveying the coiled material along the third direction in the cutting space specifically includes: conveying the coiled material along a third direction at a conveying speed; The metal mesh is stretched and moved at a pre-stretching speed, and the pre-stretching speed is greater than the conveying speed.

4. A battery current collector production device, characterized in that: The battery current collector production equipment comprises: A metal mesh processing device, the metal mesh processing device comprising a first tool, a second tool and a driving mechanism, wherein the first cutting edge of the first tool is a flat cutting edge, the second cutting edge of the second tool is toothed, the first tool and the second tool enclose a cutting space, the driving mechanism drives one of the first tool and the second tool to move relative to the other, so that the first tool can approach or depart from a straight line along a first direction relative to the second tool, and the first tool can also reciprocate relative to the straight line along a second direction relative to the second tool, so as to process a coil in the cutting space into a metal mesh, the first direction and the second direction are arranged at an angle; and A feeding device is used to transport the coil along a third direction to the metal mesh processing device, and the third direction is set at an angle to the first direction and the second direction.

5. The battery current collector production equipment according to claim 4, characterized in that: The driving mechanism comprises a first driving assembly and a second driving assembly; The first drive assembly is mounted on the frame and connected to the second drive assembly, the second drive assembly is connected to the second tool, one of the first drive assembly and the second drive assembly is used to drive the second tool to reciprocate along a straight line in the first direction, and the other is used to drive the second tool to reciprocate along a straight line in the second direction; Wherein, the first driving assembly and the second driving assembly are both linear motors.

6. The battery current collector production equipment according to claim 4, characterized in that: The metal mesh processing device also includes an adaptive structure; A first mating surface is formed on a side of the first tool opposite to the second tool, and a second mating surface is formed on a side of the second tool opposite to the first tool. The first mating surface and the second mating surface are guided and matched with each other and are used to guide the second cutting edge of the second tool to move against the first cutting edge of the first tool. The driving mechanism is connected to the second tool via the adaptive structure; Among them, the adaptive structure includes a self-aligning bearing and an elastic support assembly, the movable end of the driving mechanism is movably connected to the second tool through the self-aligning bearing, and the movable end of the driving mechanism also elastically abuts against the second tool through the elastic support assembly so that the second mating surface fits against the first mating surface.

7. The battery current collector production equipment according to claim 4, characterized in that: The feeding device comprises a first feeding roller and a second feeding roller arranged opposite to each other, the coil is arranged between the first feeding roller and the second feeding roller, and can convey the coil when at least one of the first feeding roller and the second feeding roller rotates; The battery current collector production equipment also includes a pre-tensioning device, which is arranged on the carrier and located between the metal mesh processing device and the winding device. The pre-tensioning device includes a first pre-tensioning roller and a second pre-tensioning roller that are arranged opposite to each other. The metal mesh formed by the coil processing is passed through the first pre-tensioning roller and the second pre-tensioning roller, and can be pre-tensioned and flattened when at least one of the first pre-tensioning roller and the second pre-tensioning roller rotates. Wherein, the pre-stretching speed of the metal mesh by the pre-stretching device is greater than the conveying speed of the coil by the feeding device.

8. The battery current collector production equipment according to claim 4, characterized in that: The battery current collector production equipment also includes: A carrier frame, on which the metal mesh processing device and the feeding device are both arranged; an unwinding device, the unwinding device being disposed on the carrier frame and located before the metal mesh processing device, the unwinding device being used to unwind the coil; and A winding device is arranged on the supporting frame and is located behind the metal mesh processing device. The winding device is used to roll up the metal mesh.

9. The battery current collector production equipment according to claim 5, characterized in that: The winding device comprises: A support frame, arranged on the bearing frame; A material shaft, which is rotatably disposed on the support frame and is used to fix the material roll; A driving mechanism, the driving mechanism is mounted on the support frame and is in driving connection with the material shaft so as to drive the material shaft to drive the material roll to rotate; and A deviation correction mechanism, which is mounted on the support frame and is drivingly connected to the material shaft so as to be able to adjust the axial position of the material shaft and the material roll relative to the support frame; Among them, the driving mechanism includes a first driving motor and a transmission shaft drivingly connected to the output shaft of the first driving motor, and the material shaft is slidably connected to the transmission shaft so that the end of the material shaft can be circumferentially positioned and axially moved relative to the transmission shaft.

10. The battery current collector production equipment according to claim 4, characterized in that: The metal mesh processing device further comprises a leveling structure, the leveling structure comprising an adjustment frame, a rotating shaft and an adjustment assembly, and the adjustment frame is mounted on the supporting frame; The first tool is arranged on the adjustment frame, and the adjustment frame includes a rotating end and an adjusting end arranged opposite to each other. The rotating end is rotatably connected to the frame through the rotating shaft, so that the adjustment frame can drive the first tool to rotate around the axis of the rotating shaft. The adjustment component is installed on the frame and is used to adjust the position of the adjusting end relative to the frame, so that the first cutting edge of the first tool is parallel to the second cutting edge of the second tool.

Images