Lamination device

Abstract

The present application provides a lamination device, which includes a lamination assembly, a diaphragm unwinding mechanism, a first conveying mechanism, a second conveying mechanism and at least one manipulator. The lamination assembly is used to support and fix the first pole piece and the first pole piece and the diaphragm conveyed thereon; the diaphragm unwinding mechanism is used to move the diaphragm toward the lamination assembly via a transition roller; the first conveying mechanism is used to convey the first pole piece to the loading station and position it on the first surface of the diaphragm; the second conveying mechanism is used to convey the second pole piece to the loading station and position it on the second surface of the diaphragm opposite to the first surface, so that the first pole piece and the second pole piece are arranged oppositely; at least one manipulator is used to move the first pole piece, the second pole piece and the diaphragm therebetween to the top of the lamination assembly, and is used to clamp the positioned first pole piece, the second pole piece and the diaphragm therebetween in the process of conveying the first pole piece and the second pole piece to the lamination assembly. The lamination device can effectively improve the lamination efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of battery processing, and in particular relates to a lamination device. Background Art

[0002] During the battery manufacturing process, it is often necessary to stack the positive electrode sheets, negative electrode sheets and separators of the battery to form a battery cell.

[0003] At present, the Z-type lamination method is generally used, which basically stacks the negative electrode sheet, the separator and the positive electrode sheet one by one from bottom to top in a Z-type. However, in this Z-type lamination method, since the negative electrode sheet and the positive electrode sheet need to be loaded onto the lamination assembly in sequence for lamination, the lamination speed is slow, which in turn affects the lamination efficiency of the battery cell. Summary of the invention

[0004] The present application provides a lamination device, which can effectively increase the lamination rate.

[0005] In order to solve the above technical problems, a technical solution adopted by the present application is: to provide a lamination device, which includes a lamination assembly, a diaphragm unwinding mechanism, a first conveying mechanism, a second conveying mechanism and at least one manipulator. Among them, the lamination assembly is used to support and fix the first pole piece, the second pole piece and the diaphragm conveyed thereon; the diaphragm unwinding mechanism has a transition roller, and the diaphragm unwinding mechanism is used to move the diaphragm toward the lamination assembly via the transition roller; the first conveying mechanism is used to convey the first pole piece to the loading station between the lamination assembly and the transition roller, and position the first pole piece on the first surface of the diaphragm; the second conveying mechanism is used to convey the second pole piece to the loading station, and position the second pole piece on the second surface of the diaphragm opposite to the first surface, so that the first pole piece and the second pole piece are arranged oppositely; at least one manipulator is used to move the first pole piece, the second pole piece and the diaphragm therebetween to the top of the lamination assembly, and is used to clamp the positioned first pole piece, the second pole piece and the diaphragm therebetween in the process of conveying the first pole piece and the second pole piece to the lamination assembly.

[0006] Optionally, the lamination assembly is arranged downstream of the transition roller along the moving direction of the diaphragm, and the diaphragm is horizontally transported to the lamination assembly via the transition roller.

[0007] Optionally, the stacking assembly includes a base plate, at least one first pressing block and a first pressing block driving mechanism; wherein the base plate can move in a direction perpendicular to the plane where the base plate is located; at least one first pressing block is arranged on a side of the base plate close to the loading station, and is used to press the first pole piece, the second pole piece and at least one corner of the diaphragm therebetween that are transferred to the base plate; the first pressing block driving mechanism includes a first longitudinal driving assembly and a first vertical driving assembly, wherein the first longitudinal driving assembly is used to drive at least one first pressing block to move in the width direction of the diaphragm; and the first vertical driving assembly is used to drive at least one first pressing block to move in a direction perpendicular to the plane where the base plate is located.

[0008] Optionally, the stacking assembly includes a base plate, which can move in a direction perpendicular to the plane where the base plate is located; the base plate is provided with a through hole penetrating the upper and lower surfaces in a direction perpendicular to the plane where the base plate is located, so that when the unloading mechanism grabs the battery cell formed by the stacking, the lower jaw of the unloading mechanism extends into the through hole and cooperates with the upper jaw of the unloading mechanism to clamp the battery cell.

[0009] Optionally, the lamination assembly further includes a movable plate, which is disposed at a position corresponding to the through hole and can move toward and away from the through hole, so as to fill the through hole during the lamination operation and expose the through hole during blanking.

[0010] Optionally, the stacking assembly also includes at least one second pressing block and a second pressing block driving mechanism, wherein at least one second pressing block is arranged on a side of the base plate away from the loading station, and is used to press at least one corner of the first pole piece, the second pole piece and the diaphragm therebetween that are transferred to the base plate; the second pressing block driving mechanism includes a second longitudinal driving assembly and a second vertical driving assembly, wherein the second longitudinal driving assembly is used to drive at least one second pressing block to move along the width direction of the diaphragm; and the second vertical driving assembly is used to drive at least one second pressing block to move in a direction perpendicular to the plane of the base plate.

[0011] Optionally, a first adsorption plate is fixedly provided at the movable end of the first transport mechanism, and the first adsorption plate is used to adsorb the first pole piece and correct the position of the first pole piece; and / or a second adsorption plate is fixedly provided at the movable end of the second transport mechanism, and the second adsorption plate is used to adsorb the second pole piece and correct the position of the second pole piece.

[0012] Optionally, the first adsorption plate is provided with at least one first groove on the side facing the first pole piece, and the second adsorption plate is provided with at least one second groove on the side facing the second pole piece; and when the first adsorption plate and the second adsorption plate position the first pole piece and the second pole piece on the diaphragm, the first groove and the second groove are arranged opposite to each other, and the first groove is opposite to the surface of the first pole piece.

[0013] Optionally, the first transport mechanism includes a four-axis manipulator, a five-axis manipulator or a six-axis manipulator; and / or the second transport mechanism includes a four-axis manipulator, a five-axis manipulator or a six-axis manipulator.

[0014] Optionally, the manipulator includes at least one clamping mechanism and a transverse drive assembly; wherein, at least one clamping mechanism is used to clamp the positioned first pole piece, the second pole piece and the diaphragm therebetween; the clamping mechanism of the transverse drive assembly is installed at the moving end of the transverse drive assembly, and the transverse drive assembly is used to drive the clamping mechanism to move toward the stacking assembly to transfer the first pole piece, the second pole piece and the diaphragm therebetween to the stacking assembly.

[0015] Optionally, there are two clamping mechanisms, and the spacing between one side edge of one clamping mechanism and one side edge of the other clamping mechanism is twice the width of one of the battery cells; when one clamping mechanism moves to the stacking assembly, the other clamping mechanism moves to the loading station and is used to clamp the newly loaded first pole piece and second pole piece and the diaphragm therebetween; the one side edge of one clamping mechanism and the one side edge of the other clamping mechanism are both close to the transition roller.

[0016] Optionally, the clamping mechanism includes an upper clamping block, a lower clamping block, a third longitudinal drive assembly and a third vertical drive assembly: the upper clamping block and the lower clamping block are used to clamp the positioned first pole piece, the second pole piece and the diaphragm therebetween; the upper clamping block and the lower clamping block are arranged at the movable end of the third longitudinal drive assembly, and the third longitudinal drive assembly is used to drive the upper clamping block and the lower clamping block to move relative to and away from each other along the width direction of the diaphragm, so that the upper clamping block and the lower clamping block move to a position corresponding to the loading station; the third vertical drive assembly is connected to the upper clamping block and the lower clamping block, and is used to drive the upper clamping block and the lower clamping block to move relative to and away from each other in a direction perpendicular to the plane where the diaphragm is located, so as to clamp and release the first pole piece, the second pole piece and the diaphragm therebetween.

[0017] Optionally, the lateral drive assembly drives the clamping mechanism to translate.

[0018] Optionally, the distance between one side edge of the first pole sheet placed for the first time on the stacking assembly and one side edge of the first pole sheet on the loading station is twice the width of a battery cell; wherein, the one side edge of the first pole sheet placed for the first time and the one side edge of the first pole sheet on the loading station are both away from the transition roller.

[0019] Optionally, the stacking assembly includes a base plate and at least one first pressing block, and the base plate can move in a direction perpendicular to the plane of the base plate; the at least one first pressing block is arranged on a side of the base plate close to the loading station, and is used to compress at least one corner of the first pole piece, the second pole piece and the diaphragm therebetween that are transferred to the base plate; the manipulator includes a clamping mechanism for clamping the positioned first pole piece, the second pole piece and the diaphragm therebetween; wherein the distance between one side edge of the compressed diaphragm and one side edge of the clamping mechanism on the loading station is the width dimension of a battery cell; wherein the one side edge of the compressed diaphragm is close to the transition roller, and the one side edge of the clamping mechanism on the loading station is away from the transition roller.

[0020] Optionally, the clamping mechanism also clamps a first partial diaphragm, which is not between the first pole piece and the second pole piece on the loading station; and / or, the at least one first pressure block also corresponds to a second partial diaphragm, which is not covered by the first pole piece or the second pole piece pressed by the at least one first pressure block.

[0021] Optionally, there are two manipulators, which are located on opposite sides of the diaphragm.

[0022] The stacking device provided in the present application is provided with a stacking assembly and a diaphragm unwinding mechanism to support and fix the first electrode sheet, the second electrode sheet and the diaphragm conveyed thereon through the stacking assembly, and a transition roller is provided on the diaphragm unwinding mechanism to move the diaphragm toward the stacking assembly via the transition roller; at the same time, a first conveying mechanism and a second conveying mechanism are provided to convey the first electrode sheet and the second electrode sheet to the loading station of the diaphragm and position them respectively through the first conveying mechanism and the second conveying mechanism. Compared with the method of conveying the electrode sheets by one conveying mechanism in the prior art, not only the accuracy of the position of the two electrode sheets on the diaphragm can be improved, but also the conveying efficiency can be improved; in addition, a manipulator is provided to continuously clamp the positioned first electrode sheet, the second electrode sheet and the diaphragm therebetween during the process of conveying the electrode sheets by the diaphragm, so that the stacking device can convey and stack the two electrode sheets at the same time, thereby greatly improving the stacking efficiency of the stacking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0024] Figure 1 A schematic diagram of the structure of a lamination device provided in one embodiment of the present application;

[0025] Figure 2 for Figure 1 A top view of

[0026] Figure 3 A schematic diagram of the structure of a lamination assembly provided in one embodiment of the present application;

[0027] Figure 4 for Figure 3 A top view of

[0028] Figure 5 A schematic structural diagram of a lamination assembly provided in another embodiment of the present application;

[0029] Figure 6 A schematic diagram of the structure of a manipulator provided in one embodiment of the present application;

[0030] Figure 7 for Figure 6 A top view of

[0031] Figure 8 A schematic diagram of the operation of transferring a pole piece provided by an embodiment of the present application;

[0032] Fig. 9 A schematic top view of a manipulator provided in another embodiment of the present application;

[0033] Fig.10 A schematic diagram of the distance between a compressed diaphragm on a lamination assembly and a clamping structure at a loading station provided in an embodiment of the present application;

[0034] Fig.11 A schematic top view of a manipulator disposed on one side of a diaphragm provided in an embodiment of the present application;

[0035] Fig.12 A schematic top view of a robot arm provided on one side of a diaphragm provided in another embodiment of the present application;

[0036] Fig.13 A schematic top view of a mechanical arm provided on both sides of a diaphragm provided in an embodiment of the present application;

[0037] Fig.14 A schematic top view of manipulators provided on both sides of a diaphragm provided in another embodiment of the present application;

[0038] Fig.15 A schematic top view of a robot disposed on both sides of a diaphragm provided in yet another embodiment of the present application. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0040] See also Figure 1 to Figure 2 ,in, Figure 1 A schematic diagram of the structure of a lamination device provided in one embodiment of the present application; Figure 2 for Figure 1 In this embodiment, a lamination device 100 is provided, and the lamination device 100 includes a lamination assembly 10, a membrane unwinding mechanism 41, a first conveying mechanism, a second conveying mechanism, and at least one robot 30.

[0041] The transmission direction of the diaphragm 3 involved in the following embodiments specifically refers to the X direction, the width direction of the diaphragm 3 specifically refers to the Y direction, and the direction perpendicular to the plane where the bottom plate 110 is located specifically refers to the Z direction.

[0042] The stacking assembly 10 includes a bottom plate 110, which is used to support the diaphragm 3 and the first pole piece 1 and the second pole piece 2 transferred thereon; the bottom plate 110 can also be called a stacking platform, which has a working surface, and the stacking assembly 10 specifically supports and fixes the diaphragm 3 and the first pole piece 1 and the second pole piece 2 transferred thereon and the diaphragm 3 on the working surface of the bottom plate 110. The working surface can usually be the upper surface of the bottom plate 110. Specifically, the bottom plate 110 can be driven by the bottom plate lifting mechanism 12 to move in a direction perpendicular to the plane where the bottom plate 110 is located (Z direction) to ensure that the pole piece at the top of the stacking assembly 10 is at the same height after each loading. The bottom plate lifting mechanism 12 is arranged directly below the bottom plate 110, and it may include a motor, a lead screw nut or an electric cylinder, etc., to drive the bottom plate 110 to rise and fall.

[0043] The membrane unwinding mechanism 41 may include a transition roller 42 and an unwinding roller and other intermediate rollers, such as a membrane buffer roller, a membrane tension control roller, etc. The unwinding roller is used to carry the rolled membrane 3, and the transition roller 42 can be used to change the conveying direction of the membrane 3. The membrane unwinding mechanism 41 is used to move the membrane 3 toward the stacking assembly 10 via the transition roller 42. The stacking assembly 10 is arranged downstream of the transition roller 42 along the moving direction of the membrane 3, and the membrane 3 is horizontally transported to the stacking assembly 10 via the transition roller 42; of course, the membrane 3 can also be transported to the stacking assembly 10 via the transition roller 42 at a slight inclination relative to the horizontal plane, such as within 30° upward or downward.

[0044] Among them, the first conveying mechanism is used to convey the first pole piece 1 to the loading station A between the stacking assembly 10 and the transition roller 42, and position the first pole piece 1 on the first surface 4 of the diaphragm 3. The second conveying mechanism is used to convey the second pole piece 2 to the loading station A, and position the second pole piece 2 on the second surface 5 of the diaphragm 3 opposite to the first surface 4, so that the first pole piece 1 and the second pole piece 2 are arranged relative to each other. Since the first pole piece 1 and the second pole piece 2 are respectively conveyed to the first surface 4 and the second surface 5 of the diaphragm 3 by the first conveying mechanism and the second conveying mechanism, compared with the method of conveying the pole pieces by one conveying mechanism, not only the accuracy of the position of the two pole pieces on the diaphragm 3 can be improved, but also the conveying efficiency can be improved. Specifically, the first conveying mechanism may include a four-axis manipulator, a five-axis manipulator or a six-axis manipulator, and / or the second conveying mechanism may include a four-axis manipulator, a five-axis manipulator or a six-axis manipulator; specifically, the polarities of the first pole piece 1 and the second pole piece 2 are opposite; and in one embodiment, the lengths of the first pole piece 1 and the second pole piece 2 may be different, for details, please refer to Figure 1 .

[0045] Among them, at least one robot 30 is used to clamp the positioned first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween; and it can drive the diaphragm 3 and the first pole piece 1 and the second pole piece 2 thereon to move to the top of the stacking assembly 10, and transfer the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween to the stacking assembly 10.

[0046] The stacking assembly 10 provided in this embodiment is provided with a stacking assembly 10 and a diaphragm unwinding mechanism 41, so that the stacking assembly 10 supports and fixes the first electrode sheet 1, the second electrode sheet 2 and the diaphragm 3 therebetween, and a transition roller 42 is provided on the diaphragm unwinding mechanism 41, so that the diaphragm 3 moves toward the stacking assembly 10 via the transition roller 42; at the same time, a first conveying mechanism and a second conveying mechanism are provided, so that the first electrode sheet 1 and the second electrode sheet 2 are respectively conveyed to the feeding station A of the diaphragm 3 by the first conveying mechanism and the second conveying mechanism are carried out Compared with the prior art method of transporting the electrode pieces by a transport mechanism, positioning can not only improve the accuracy of the positions of the two electrode pieces on the diaphragm 3, but also improve the transport efficiency; in addition, by setting a manipulator 30 and enabling the manipulator 30 to move toward the stacking assembly 10, the positioned first electrode piece 1, the second electrode piece 2 and the diaphragm 3 therebetween are continuously clamped during the process of transporting the electrode pieces by the diaphragm 3, so that the stacking device 100 can transport and stack the two electrode pieces at the same time, thereby greatly improving the stacking efficiency of the stacking device 100.

[0047] See also Figure 3 to Figure 4 ,in, Figure 3 A schematic diagram of the structure of a lamination assembly provided in one embodiment of the present application; Figure 4 for Figure 3In one embodiment, a plurality of adsorption holes 111 are provided on one side of the bottom plate 110 facing the diaphragm 3, and the adsorption holes 111 are connected to a vacuum pumping device, so that when the vacuum pumping device is working, an adsorption force is generated on the surface of the bottom plate 110 to adsorb the diaphragm 3.

[0048] See also Figure 4 In one embodiment, the bottom plate 110 is also provided with a through hole 112 penetrating the upper and lower surfaces in a direction perpendicular to the plane of the bottom plate 110 (Z direction), so that when the unloading mechanism grabs the battery cell formed by lamination, the lower clamping claw of the unloading mechanism can extend into the through hole 112 and cooperate with the upper clamping claw of the unloading mechanism to clamp the battery cell; this facilitates the unloading mechanism to remove the battery cell from the lamination assembly 10. Further, in order to improve the lamination efficiency, the lamination assembly 10 is also provided with a movable plate 14 at a position corresponding to the through hole 112, and the movable plate 14 can move toward and away from the through hole 112 to fill the through hole 112 during the lamination operation, thereby supporting the diaphragm 3 and the first pole piece 1 and the second pole piece 2 transferred to the bottom plate 110, and exposing the through hole 112 during unloading, so as to facilitate the unloading mechanism to remove the battery cell from the lamination assembly 10; specifically, the movable plate 14 is arranged directly below the through hole 112.

[0049] See also Figure 3 to Figure 4 In one embodiment, the lamination assembly 10 further includes at least one first pressing block 13, at least one second pressing block 13', a first pressing block driving mechanism and a second pressing block driving mechanism.

[0050] Among them, at least one first pressing block 13 can be arranged on a side of the stacking assembly 10 close to the loading station A, and is used to press at least one edge corner of the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween that are transferred to the base plate 110 to prevent the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween from moving; at least one second pressing block 13' is arranged on a side of the base plate 110 away from the loading station A, and is used to press at least one edge corner of the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween that are transferred to the base plate 110 to prevent the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween from moving.

[0051] Among them, the first pressure block driving mechanism may include a first longitudinal driving component 15 and a first vertical driving component 16; the first longitudinal driving component 15 is used to drive at least one first pressure block 13 to move along the width direction (Y direction) of the diaphragm 3; the first vertical driving component 16 is used to drive at least one first pressure block 13 to move along a direction perpendicular to the plane where the base plate 110 is located (Z direction).

[0052] In one embodiment, there are two first pressing blocks 13, and the two first pressing blocks 13 are distributed along the width direction of the diaphragm 3. When there are two first pressing blocks 13, the first longitudinal driving component 15 can also be used to drive the two first pressing blocks 13 to move relative to or away from each other along the width direction (Y direction) of the diaphragm 3. Specifically, in this embodiment, the first longitudinal driving component 15 may include a transmission screw, one end of which has a left-handed thread and the other end has a right-handed thread. The two first pressing blocks 13 are respectively screwed to two threads with opposite rotation directions on the transmission screw, so that the two first pressing blocks 13 can be driven to move relative to or away from each other synchronously through the transmission screw, thereby realizing the movement of the two first pressing blocks 13 along the Y direction to move away from or close to the base plate 110.

[0053] Among them, the second pressure block driving mechanism may include a second longitudinal driving component 15' and a second vertical driving component 16'; the second longitudinal driving component 15' is used to drive at least one second pressure block 13' to move along the width direction (Y direction) of the diaphragm 3; the second vertical driving component 16' is used to drive at least one second pressure block 13' to move in a direction perpendicular to the plane where the base plate 110 is located (Z direction).

[0054] In one embodiment, there are two second pressing blocks 13', and the two second pressing blocks 13' are distributed along the width direction of the diaphragm 3. When there are two second pressing blocks 13', the second longitudinal driving component 15' can also be used to drive the two second pressing blocks 13' to move relative to or away from each other along the width direction (Y direction) of the diaphragm 3; specifically, in this embodiment, the second longitudinal driving component 15' can also be a transmission screw, and its specific structure and function can refer to the structure and function of the above-mentioned first longitudinal driving component 15 when it is a transmission screw, which will not be repeated here.

[0055] It can be understood that the movement of the first pressing block 13 and the second pressing block 13' in the Z direction can be used to press the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween onto the stacking assembly 10, or to release the pressing state; the movement of the first pressing block 13 and the second pressing block 13' in the Y direction can be used to break away from the overlap with the diaphragm 3 and the first pole piece 1 and the second pole piece 2 thereon, so that the first pressing block 13 and the second pressing block 13' can bypass the diaphragm 3 and the first pole piece 1 and the second pole piece 2 thereon and move in the Z direction. When the clamped first pole piece 1 and the second pole piece 2 and the diaphragm 3 therebetween are placed above the stacking assembly 10, the first pressing block 13 and the second pressing block 13' on the stacking assembly 10 release the compressed first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween so that the first pressing block 13 and the second pressing block 13' bypass the diaphragm 3 and press the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween from above onto the stacking assembly 10.

[0056] In the specific implementation process, in order to ensure that the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween are reliably pressed against the upper surface of the base plate 110, the stacking assembly 10 also includes a first cylinder 17 and a second cylinder 17', the first pressing block 13 is specifically arranged at the moving end of the first cylinder 17, and the first cylinder 17 is connected to the first longitudinal driving assembly 15 via the first connecting plate 18; the second pressing block 13' is specifically arranged at the moving end of the second cylinder 17', and the second cylinder 17' is connected to the second longitudinal driving assembly 15' via the second connecting plate 18'; specifically, the piston rods of the first cylinder 17 and the second cylinder 17' are generally in a retracted state, and the first cylinder 17 and the second cylinder 17' each have only one air inlet, and compressed air enters the cylinder from the air inlet to drive the piston rods of the cylinders to retract. Specifically, when the first vertical drive component 16 drives the first pressure block 13 to press against the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween, if the downward force exerted by the first vertical drive component 16 on the first pressure block 13 is greater than the force exerted by the piston rod on the first pressure block 13, the piston rod is stretched, but the first pressure block 13 also presses the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween onto the bottom plate 110.

[0057] Further, see Figure 5 , Figure 5 A schematic diagram of the structure of a lamination assembly provided in another embodiment of the present application; in order to facilitate the adjustment of the overall height of the lamination assembly 10, an integral lifting mechanism 12' is further provided below the lamination assembly 10. In this embodiment, the first pressing block driving mechanism, the second pressing block driving mechanism and the bottom plate lifting mechanism 12 of the lamination assembly 10 can be fixedly mounted on a frame 11, and the integral lifting mechanism 12' can be provided below the frame 11, and is used to drive the frame 11 to move up and down, thereby driving the bottom plate 110, the first pressing block 13 and the second pressing block 13' on the frame 11 to move as a whole. Among them, the integral lifting mechanism 12' can adopt a motor screw nut transmission assembly or an electric cylinder, etc.

[0058] In one embodiment, see Figure 1 , the first transport mechanism is also fixed with a first adsorption plate 21 at the moving end, so as to adsorb the first pole piece 1 through the first adsorption plate 21 and correct the position of the first pole piece 1; and / or the second transport mechanism is fixed with a second adsorption plate 21' at the moving end, so as to adsorb the second pole piece 2 through the second adsorption plate 21' and correct the position of the second pole piece 2. The length of the first adsorption plate 21 and the second adsorption plate 21' can be less than the length of the first pole piece 1 and the second pole piece 2.

[0059] Furthermore, in order to enable the manipulator 30 to clamp the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween before the first conveying mechanism and the second conveying mechanism release the first pole piece 1 and the second pole piece 2, at least one first groove 211 is opened on the side of the first adsorption plate 21 facing the first pole piece 1, and at least one second groove 211' is opened on the side of the second adsorption plate 21' facing the second pole piece 2; and when the first adsorption plate 21 and the second adsorption plate 21' position the first pole piece 1 and the second pole piece 2 on the diaphragm 3, the first groove 211 and the second groove 211' are arranged opposite to each other.

[0060] In one embodiment, a first groove 211 is provided on the first adsorption plate 21, a second groove 211' is provided on the second adsorption plate 21', and the first groove 211 faces the surface of the first pole piece 1. For example, the first groove 211 may face a portion of the surface of the first pole piece 1 close to the transition roller 42.

[0061] In one embodiment, see Figure 6 and Figure 7 ,in, Figure 6 A schematic diagram of the structure of a manipulator provided in one embodiment of the present application; Figure 7 for Figure 6 ; the manipulator 30 may specifically include a clamping mechanism 32 and a lateral drive assembly 31; wherein the clamping mechanism 32 is mounted on the moving end of the lateral drive assembly 31, and is used to clamp the positioned first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween; specifically, part of the clamping mechanism 32 acts on one side edge of the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween, so as to clamp the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween; wherein the one side edge of the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween is close to the stacking assembly 10, and the specific clamping position can be seen in Figure 1 .

[0062] The lateral driving assembly 31 is used to drive the clamping mechanism 32 to move to the stacking assembly 10 , so as to transfer the first pole piece 1 , the second pole piece 2 and the diaphragm 3 therebetween to the top of the stacking assembly 10 and make the second pole piece 2 close to the bottom plate 110 .

[0063] Among them, the way in which the lateral drive component 31 drives the clamping mechanism 32 to move may include translation, movement along a curve, movement along a broken line, etc., as long as the placement orientation of the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween that are moved to the top of the stacking assembly 10 is ensured not to be changed. In the specific implementation process, when the lateral drive component 31 drives the clamping mechanism 32 to move, the bottom plate 110 on the stacking assembly 10 can be driven by the bottom plate lifting mechanism 12 to drop a certain height to avoid the first pressing block 13 and the second pressing block 12 from colliding with the clamping mechanism 32, and at the same time facilitate the clamped first pole piece 1 and the second pole piece 2 and the diaphragm 3 therebetween to be placed above the stacking assembly 10. In one embodiment, the lateral drive component 31 drives the clamping mechanism 32 to translate, that is, the lateral drive component 31 drives the clamping mechanism 32 to move linearly from the loading station A to the top of the stacking assembly 10. The translation may include translation in the horizontal direction. Since the clamping mechanism 32 performs translation, compared with movement along a curve, movement along a broken line, etc., this translation method can shorten the time consumption and thus increase work efficiency.

[0064] It should be noted that, in order to ensure that the size of the battery cell formed by lamination meets the set requirements, the distance L1 between the edge of one side of the first electrode sheet 1 placed for the first time on the lamination assembly 10 and the edge of one side of the first electrode sheet 1 on the loading station A is twice the width W of a battery cell, that is, the distance L1 is 2W (see Figure 1 ); wherein, the one side edge of the first pole piece 1 placed for the first time and the one side edge of the first pole piece 1 on the loading station A are both away from the transition roller 42. In the illustrated embodiment, the one side edge of the first pole piece 1 placed for the first time and the one side edge of the first pole piece 1 on the loading station A can both be the right side edge of the first pole piece 1.

[0065] See also Figure 8 , Figure 8 An operation diagram of conveying electrodes provided in an embodiment of the present application; specifically, after the first conveying mechanism and the second conveying mechanism convey the first electrode 1 and the second electrode 2 to the loading station A and position them, the first electrode 1, the second electrode 2 and the diaphragm 3 therebetween are clamped by the clamping mechanism 32, and then the first conveying mechanism and the second conveying mechanism withdraw the positioning of the first electrode 1 and the second electrode 2, and the clamping mechanism 32 is moved toward the stacking assembly 10 under the drive of the transverse driving assembly 31; when the first electrode 1, the second electrode 2 and the diaphragm 3 therebetween are moved to the top of the stacking assembly 10, the clamping mechanism 32 can be moved from the stacking assembly 10 to the loading station A under the drive of the transverse driving assembly 31, and clamp the next first electrode 1, the second electrode 2 and the diaphragm 3 therebetween that are conveyed to the loading station A, and then convey them to the top of the stacking assembly 10 again.

[0066] See also Fig. 9, Fig. 9 A schematic top view of a manipulator provided for another embodiment of the present application. In this embodiment, in order to further improve the stacking efficiency, a manipulator 30 may include two clamping mechanisms 32, wherein the spacing L2 between one side edge of one clamping mechanism 32 and one side edge of another clamping mechanism 32 is twice the width dimension W of one of the battery cells; the one side edge of one clamping mechanism 32 and the one side edge of another clamping mechanism 32 are both close to the transition roller 42; and when one clamping mechanism 32 moves to the stacking assembly 10, the other clamping mechanism 32 moves to the loading station A, and is used to clamp the newly loaded first pole piece 1 and the second pole piece 2 and the diaphragm 3 therebetween. In the illustrated embodiment, the one side edge of one clamping mechanism 32 and the one side edge of the other clamping mechanism 32 are both left edges.

[0067] For details, see Figure 6 to Figure 7 The clamping mechanism 32 mentioned above specifically includes an upper clamping block 321, a lower clamping block 322, a third longitudinal drive assembly and a third vertical drive assembly. The upper clamping block 321 and the lower clamping block 322 are arranged to be close to each other and clamp at least one side edge of the first pole piece 1 and the second pole piece 2 facing the stacking assembly 10, so as to clamp the positioned first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween.

[0068] In one embodiment, there are two upper clamping blocks 321 and two lower clamping blocks 322, one of which clamps the first pole piece 1, the second pole piece 2 and one side edge of the diaphragm 3 therebetween; the size of the other upper clamping block 321 and the lower clamping block 322 matches the size of the first groove 211 and the second groove 211', so that in the specific implementation process, they extend into the first groove 211 and the second groove 211' to clamp the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween, and then withdraw from the first handling mechanism and the second handling mechanism to position the first pole piece 1 and the second pole piece 2. Thus, the first handling mechanism and the second handling mechanism can position the first pole piece 1 and the second pole piece 2 on the diaphragm 3 respectively, and can also clamp the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween through the clamping mechanism 32. Of course, in other embodiments, the upper clamping block 321 and the lower clamping block 322 and the first conveying mechanism and the second conveying mechanism may also be configured to contact different parts of the first pole piece 1 and the second pole piece 2 respectively, which is not limited here.

[0069] Among them, the upper clamping block 321 and the lower clamping block 322 are specifically arranged at the movable end of the third longitudinal drive assembly and the third vertical assembly, so as to drive the upper clamping block 321 and the lower clamping block 322 to move along the Y direction through the third longitudinal drive assembly, so that the upper clamping block 321 and the lower clamping block 322 move to the position corresponding to the loading station A.

[0070] The third vertical drive assembly is connected to the upper clamp block 321 and the lower clamp block 322 to drive the upper clamp block 321 and the lower clamp block 322 to move relative to and away from each other in the Z direction, thereby clamping and loosening the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween. In one embodiment, the third vertical drive assembly includes two vertical drive members, which are respectively connected to the upper clamp block 321 and the lower clamp block 322 to respectively control the upper clamp block 321 and the lower clamp block 322 to move in the Z direction.

[0071] Specifically, the driving components involved in the present application can all be motors, lead screw nuts or electric cylinders.

[0072] In one embodiment, see Figures 1 to 10 ,in, Fig.10 A schematic diagram of the distance between the compressed diaphragm on the stacking assembly provided in one embodiment of the present application and the clamping structure at the loading station; specifically, the stacking assembly 10 includes at least one first pressing block 13, which is arranged on one side of the bottom plate 110 close to the loading station A, and is used to compress at least one corner of the first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween, which are transferred to the bottom plate 110; the manipulator 30 includes at least one clamping mechanism 32, which is used to clamp the positioned first pole piece 1, the second pole piece 2 and the diaphragm 3 therebetween; wherein, see Fig.10 , the distance L3 between one side edge of the compressed diaphragm 3 and one side edge of the clamping mechanism 32 on the loading station A is the width W of a battery cell; wherein, the one side edge of the compressed diaphragm 3 is close to the transition roller 42, and the one side edge of the clamping mechanism 32 on the loading station A is away from the transition roller 42. It is easy to understand that the one side edge of the clamping mechanism 32 on the loading station A is aligned with the one side edge of the diaphragm 3 clamped by the clamping mechanism 32. In addition, as Fig.10 As shown, the clamping mechanism 32 can also clamp the first part of the diaphragm, which is not between the first pole piece 1 and the second pole piece 2 on the loading station A; the first part of the diaphragm is Fig.10 Similarly, the at least one first pressing block 13 may also correspond to a second portion of the diaphragm, the second portion of the diaphragm is not covered by the first pole piece 1 or the second pole piece 2 pressed by the at least one first pressing block 13; the second portion of the diaphragm is Fig.10The portion corresponding to the length L5 in the diaphragm 3 on the bottom plate 110; for example, when only one of the first pole pieces 1 is placed on the diaphragm 3 on the bottom plate 110, the second portion of the diaphragm is not covered by the first pole piece 1 pressed by the at least one first pressing block 13; when only one of the second pole pieces 2 is placed on the diaphragm 3 on the bottom plate 110, the second portion of the diaphragm is not covered by the second pole piece 2 pressed by the at least one first pressing block 13; when the first pole piece 1 and the second pole piece 2 are placed on the diaphragm 3 on the bottom plate 110, the second portion of the diaphragm is not between the first pole piece 1 and the second pole piece 2 on the bottom plate 110. In one embodiment, the length L4 and the length L5 may be substantially equal. In addition, the first pole piece 1 may be a negative pole piece, the second pole piece 2 may be a positive pole piece, and the width of the negative pole piece may be greater than the width of the positive pole piece.

[0073] Among them, the specific functions and working principles of the first pressure block 13 and the clamping mechanism 32 involved in this embodiment are the same or similar to the specific functions and working principles of the first pressure block 13 and the clamping mechanism 32 involved in the above-mentioned embodiment, and can achieve the same or similar technical effects; at the same time, the stacking assembly 10 and the manipulator 30 involved in this embodiment may also include other structures involved in the above-mentioned embodiments, and the details can be referred to the above-mentioned relevant text description, which will not be repeated here.

[0074] In one embodiment, see Figure 11 to Figure 12 ,in, Fig.11 A schematic top view of a manipulator disposed on one side of a diaphragm provided in an embodiment of the present application; Fig.12 A schematic top view of a manipulator provided on one side of the diaphragm according to another embodiment of the present application; the manipulator 30 may be provided on only one side of the diaphragm 3; specifically, when the manipulator 30 includes a clamping mechanism 32, its specific structure can be seen in Fig.11 When the manipulator 30 includes two clamping mechanisms 32, the specific structure thereof can be seen in Fig.12 .

[0075] Further, in another embodiment, see Figures 13 to 15 , Fig.13 A schematic top view of a mechanical arm provided on both sides of a diaphragm provided in an embodiment of the present application; Fig.14 A schematic top view of manipulators provided on both sides of a diaphragm provided in another embodiment of the present application; Fig.15 A schematic top view of manipulators provided on both sides of the diaphragm according to another embodiment of the present application; to further improve the stacking efficiency, manipulators 30 may also be provided on both sides of the diaphragm 3, so that when one of the manipulators 30 moves to the stacking assembly 10, the other manipulator 30 moves from the location of the stacking assembly 10 to the loading station A; specifically, when the manipulator 30 includes a clamping mechanism 32, its specific structure can be seen in Fig.13 and Fig.14 When the manipulator 30 includes two clamping mechanisms 32, the specific structure thereof can be seen in Fig.15 .

[0076] In one embodiment, when the first pole piece 1 and the second pole piece 2 are narrow and long, a lamination device 100 (such as a lamination device 100) with manipulators 30 disposed on both sides of the diaphragm 3 can be used. Fig.13 ) stacks the first pole piece 1 and the second pole piece 2; further, in order to improve the stacking efficiency, a stacking device 100 (such as Fig.15 ) stacks the first pole piece 1 and the second pole piece 2, so that when one clamping mechanism 32 moves to the stacking assembly 10, the other clamping mechanism 32 moves to the loading station A and is used to clamp the newly loaded first pole piece 1 and the second pole piece 2 and the diaphragm 3 therebetween; and when the first pole piece 1 and the second pole piece 2 are short and strong, a stacking device 100 (such as Fig.11 and Fig.12 ) stacks the first pole piece 1 and the second pole piece 2; further, in order to improve the stacking efficiency, a stacking device 100 (such as Fig.14 ) stack the first pole piece 1 and the second pole piece 2 so that when one of the robots 30 moves to the stacking assembly 10, the other robot 30 moves from the location of the stacking assembly 10 to the loading station A.

[0077] The above are merely embodiments of the present application and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A lamination device, characterized in that: include: A lamination assembly, used for supporting and fixing the first pole piece, the second pole piece and the diaphragm transferred thereto; A diaphragm unwinding mechanism, comprising a transition roller, wherein the diaphragm unwinding mechanism is used to move the diaphragm toward the lamination assembly via the transition roller; A first transport mechanism, used for transporting the first pole piece to a loading station between the lamination assembly and the transition roller, and positioning the first pole piece on the first surface of the diaphragm; a second transport mechanism, used for transporting the second pole piece to the loading station, and positioning the second pole piece on a second surface of the diaphragm opposite to the first surface, so that the first pole piece and the second pole piece are arranged opposite to each other; At least one robot, used to move the first pole piece, the second pole piece and the diaphragm therebetween to above the stack assembly, and the robot comprises at least one clamping mechanism, the at least one clamping mechanism is used to clamp the positioned first pole piece, the second pole piece and the diaphragm therebetween during the process of transferring the first pole piece and the second pole piece to the stack assembly; The stacking assembly includes a base plate, which is provided with through holes penetrating the upper and lower surfaces in a direction perpendicular to the plane where the base plate is located, so that when a feeding mechanism grabs a battery cell formed by stacking, a lower clamping jaw of the feeding mechanism extends into the through hole and cooperates with an upper clamping jaw of the feeding mechanism to clamp the battery cell.

2. The lamination device according to claim 1, characterized in that: The lamination assembly is arranged downstream of the transition roller along the moving direction of the diaphragm, and the diaphragm is horizontally transported to the lamination assembly via the transition roller.

3. The lamination device according to claim 1, characterized in that: The lamination assembly comprises: The bottom plate can move in a direction perpendicular to the plane where the bottom plate is located; At least one first pressing block is arranged on one side of the bottom plate close to the loading station, and is used to press at least one corner of the first pole piece, the second pole piece and the diaphragm therebetween, which are transferred to the bottom plate; The first pressure block driving mechanism includes a first longitudinal driving component and a first vertical driving component, wherein the first longitudinal driving component is used to drive the at least one first pressure block to move along the width direction of the diaphragm; the first vertical driving component is used to drive the at least one first pressure block to move in a direction perpendicular to the plane where the base plate is located.

4. The lamination device according to claim 1, characterized in that: The bottom plate can move along a direction perpendicular to the plane where the bottom plate is located.

5. The lamination device according to claim 4, characterized in that: The lamination assembly further comprises a movable plate, which is arranged at a position corresponding to the through hole and can move toward and away from the through hole so as to fill the through hole during lamination operation and expose the through hole during blanking.

6. The lamination device according to claim 3, characterized in that: The lamination assembly further comprises: At least one second pressing block, arranged on a side of the bottom plate away from the loading station, for pressing at least one corner of the first pole piece, the second pole piece and the diaphragm therebetween, which are transferred to the bottom plate; The second pressing block driving mechanism includes a second longitudinal driving assembly and a second vertical driving assembly, wherein the second longitudinal driving assembly is used to drive the at least one second pressing block to move along the width direction of the diaphragm; the second vertical driving assembly is used to drive the at least one second pressing block to move in a direction perpendicular to the plane where the base plate is located.

7. The lamination device according to claim 1, characterized in that: A first adsorption plate is fixedly disposed at the moving end of the first transport mechanism, and the first adsorption plate is used to adsorb the first pole piece and correct the position of the first pole piece; and / or A second adsorption plate is fixedly provided at the moving end of the second transport mechanism, and the second adsorption plate is used for adsorbing the second pole piece and correcting the position of the second pole piece.

8. The lamination device according to claim 7, characterized in that: The first adsorption plate is provided with at least one first groove on the side facing the first pole piece, and the second adsorption plate is provided with at least one second groove on the side facing the second pole piece; and when the first adsorption plate and the second adsorption plate position the first pole piece and the second pole piece on the diaphragm, the first groove and the second groove are arranged opposite to each other, and the first groove faces the surface of the first pole piece.

9. The lamination device according to claim 1, characterized in that: The first handling mechanism includes a four-axis manipulator, a five-axis manipulator or a six-axis manipulator; and / or The second transport mechanism includes a four-axis manipulator, a five-axis manipulator or a six-axis manipulator.

10. The lamination device according to claim 1, characterized in that: The manipulator also includes: A transverse drive assembly, wherein the clamping mechanism is installed at the moving end of the transverse drive assembly, and the transverse drive assembly is used to drive the clamping mechanism to move toward the stacking assembly to transfer the first pole piece, the second pole piece and the diaphragm therebetween to the stacking assembly.

11. The lamination device according to claim 10, characterized in that: There are two clamping mechanisms, and the distance between one side edge of one clamping mechanism and one side edge of the other clamping mechanism is twice the width of a battery cell; when one of the clamping mechanisms moves to the stacking assembly, the other clamping mechanism moves to the loading station and is used to clamp the newly loaded first pole piece and the second pole piece and the diaphragm therebetween; the one side edge of one clamping mechanism and the one side edge of the other clamping mechanism are both close to the transition roller.

12. The lamination device according to claim 10, characterized in that: The clamping mechanism comprises: An upper clamping block and a lower clamping block, used to clamp the positioned first pole piece, the second pole piece and the diaphragm therebetween; A third longitudinal drive assembly, wherein the upper clamp block and the lower clamp block are arranged at a moving end of the third longitudinal drive assembly, and the third longitudinal drive assembly is used to drive the upper clamp block and the lower clamp block to move relative to and away from each other along the width direction of the diaphragm, so that the upper clamp block and the lower clamp block move to a position corresponding to the loading station; The third vertical driving assembly is connected to the upper clamping block and the lower clamping block, and is used to drive the upper clamping block and the lower clamping block to move relative to and away from each other, so as to clamp and release the first pole piece, the second pole piece and the diaphragm therebetween.

13. The lamination device according to claim 10, characterized in that: The lateral drive assembly drives the clamping mechanism to translate.

14. The lamination device according to claim 1, characterized in that: The distance between one side edge of the first pole sheet placed for the first time on the stacking assembly and one side edge of the first pole sheet on the loading station is twice the width of a battery cell; wherein, the one side edge of the first pole sheet placed for the first time and the one side edge of the first pole sheet on the loading station are both away from the transition roller.

15. The lamination device according to claim 1, characterized in that: The lamination assembly includes at least one first pressing block, and the bottom plate can move in a direction perpendicular to the plane where the bottom plate is located; the at least one first pressing block is arranged on one side of the bottom plate close to the loading station, and is used to press the first pole piece, the second pole piece and at least one corner of the diaphragm therebetween, which are transferred to the bottom plate; The robot includes a clamping mechanism for clamping the positioned first pole piece, the second pole piece and the diaphragm therebetween; wherein the distance between one side edge of the clamped diaphragm and one side edge of the clamping mechanism on the loading station is the width of a battery cell; wherein the one side edge of the clamped diaphragm is close to the transition roller, and the one side edge of the clamping mechanism on the loading station is away from the transition roller.

16. The lamination device according to claim 15, characterized in that: The clamping mechanism further clamps a first portion of the diaphragm, the first portion of the diaphragm being not between the first pole piece and the second pole piece on the loading station; and / or The at least one first pressing block further corresponds to a second partial diaphragm, and the second partial diaphragm is not covered by the first pole piece or the second pole piece pressed by the at least one first pressing block.

17. The lamination device according to any one of claims 1 to 16, characterized in that: There are two manipulators, and the two manipulators are respectively located on two opposite sides of the diaphragm.

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