Lamination device

Abstract

The utility model relates to a lamination device which comprises a driving mechanism, the driving mechanism is provided with a first mover and two second movers located on the two sides of the first mover, a diaphragm swing roller mechanism is installed on the first mover, and lamination hand mechanisms are installed on the second movers. And the diaphragm swing roller mechanism comprises a plurality of rotary swing rollers for adjusting the tension of the diaphragm. The first mover and the second mover are arranged on the driving mechanism, the first mover can drive the diaphragm swing roller mechanism to move to adjust the position of the diaphragm, the rotating swing roller in the diaphragm swing roller mechanism can adjust the tension of the diaphragm to prevent the diaphragm from wrinkling in the lamination process, and the second mover can drive the lamination hand mechanism to move to adjust the position of the diaphragm. The stacking of the diaphragm and the pole piece is realized, and the technical problem that the diaphragm is wrinkled in the lamination process in the prior art is solved.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and in particular to a stacking device. Background Art

[0002] With the continuous innovation and development of lithium battery production technology, whether it is using stacking technology or winding technology, increasing production speed has become a development trend.

[0003] In the related art, in the high-speed cutting and stacking machine, since the high-speed stacking device has very little stacking time, problems are more likely to occur. Problems such as poor electrode sheet material, poor deviation correction, and diaphragm wrinkles will cause the positive and negative electrode sheets to be misaligned during stacking. This misalignment of the electrode sheets will cause a series of effects on the battery cell, such as short circuit, battery capacity loss, poor size, and shortened life.

[0004] Therefore, it is necessary to design a new lamination device to overcome at least one of the above problems. Summary of the invention

[0005] The present application provides a lamination device, which can solve the technical problem of diaphragm wrinkles during the lamination process in the related art.

[0006] In a first aspect, an embodiment of the present application provides a stacking device, comprising: a driving mechanism, wherein the driving mechanism has a first mover and two second movers located on both sides of the first mover, a diaphragm swing roller mechanism is installed on the first mover, and a stacking hand mechanism is installed on the second mover, and the diaphragm swing roller mechanism includes a plurality of rotating swing rollers for adjusting the diaphragm tension.

[0007] In combination with the first aspect, in one embodiment, the driving mechanism is a linear motor, the first mover and the second mover both move in a straight line, and the first mover and the second mover have the same movement direction.

[0008] In combination with the first aspect, in one embodiment, the stacking hand mechanism is installed on the second mover through a stacking hand lifting mechanism.

[0009] In combination with the first aspect, in one embodiment, the stacking hand lifting mechanism includes: a stacking hand back plate, which is fixed to the second mover; a driving motor, which is installed on the stacking hand back plate, the driving motor is connected to a vertically arranged ball screw, the ball screw is fixed with a driving plate, and the stacking hand mechanism is installed on the driving plate.

[0010] In combination with the first aspect, in one embodiment, the driving plate includes: a first movable plate, the first movable plate is fixed to the ball screw; a second movable plate, the second movable plate is connected to the first movable plate through a buffer cylinder, and the stacking hand mechanism is installed on the second movable plate.

[0011] In combination with the first aspect, in one embodiment, the diaphragm swing roller mechanism also includes: a fixed frame, the fixed frame is equipped with a first motor, and the plurality of rotating swing rollers are installed on the fixed frame, the first motor is connected to the rotating swing roller, and in a working state, the first motor can drive the plurality of rotating swing rollers to rotate as a whole in the same direction around the axis of the first motor; at least two first swing rollers, the first swing rollers are installed on the fixed frame, and along a moving direction perpendicular to the diaphragm, the axes of at least two of the first swing rollers are facing each other, and the axes of the plurality of rotating swing rollers are staggered.

[0012] In combination with the first aspect, in one embodiment, the diaphragm swing roller mechanism also includes at least two second swing rollers installed on the fixed frame, and the axes of at least two second swing rollers are opposite to each other along the moving direction perpendicular to the diaphragm; the second swing roller and the first swing roller are located on opposite sides of the rotating swing roller along the moving direction of the diaphragm.

[0013] In combination with the first aspect, in one embodiment, the diaphragm swing roller mechanism further includes two guide rods, and the two guide rods are located between the first swing roller and the rotating swing roller.

[0014] In combination with the first aspect, in one embodiment, the stacking device further includes a positive pole deviation correction positioning platform located on one side of one stacking hand mechanism, and a negative pole deviation correction positioning platform located on the other side of the stacking hand mechanism.

[0015] In combination with the first aspect, in one embodiment, the stacking device further includes a stacking table lifting mechanism, and the stacking table lifting mechanism is equipped with a stacking table.

[0016] The beneficial effects brought by the technical solution provided in the embodiments of the present application include:

[0017] By arranging the first mover and the second mover on the driving mechanism, the first mover can drive the diaphragm swing roller mechanism to move to adjust the position of the diaphragm, and the rotating swing roller in the diaphragm swing roller mechanism can adjust the diaphragm tension to prevent the diaphragm from wrinkling during the stacking process. The second mover can drive the stacking hand mechanism to move to achieve stacking of the diaphragm and the pole piece, thereby solving the technical problem of diaphragm wrinkling during the stacking process in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 A schematic structural diagram of a lamination device provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of the diaphragm swing roller mechanism and the lamination hand mechanism provided in the embodiment of the present application being installed on the drive mechanism;

[0021] Figure 3 A partial structural schematic diagram of a stacking hand lifting mechanism provided in an embodiment of the present application;

[0022] Figure 4 This is a schematic diagram of the structure of the diaphragm swing roller mechanism provided in an embodiment of the present application.

[0023] In the figure:

[0024] 1. driving mechanism; 11. first mover; 12. second mover;

[0025] 2. Diaphragm swing roller mechanism; 21. Rotating swing roller; 22. Fixed frame; 23. First motor; 24. First swing roller; 25. Second swing roller; 26. Guide rod;

[0026] 3. Stacking hand mechanism;

[0027] 4. Lamination hand lifting mechanism; 41. Lamination hand back plate; 42. Driving motor; 43. Ball screw; 44. Driving plate; 441. First moving plate; 442. Second moving plate; 443. Buffer cylinder;

[0028] 5. Positive electrode deviation correction and positioning platform; 6. Negative electrode deviation correction and positioning platform; 7. Stacking table lifting mechanism; 8. Stacking table; 9. Stacking press knife; 100. Diaphragm. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings 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.

[0030] The embodiment of the present application provides a lamination device, which can solve the technical problem of diaphragm wrinkles during the lamination process in the related art.

[0031] See also Figure 1 and Figure 2As shown, a lamination device provided in an embodiment of the present application may include: a driving mechanism 1, wherein the driving mechanism 1 has a first mover 11 and two second movers 12 located on both sides of the first mover 11, a diaphragm swing roller mechanism 2 is installed on the first mover 11, and a lamination hand mechanism 3 is installed on the second mover 12, and the diaphragm swing roller mechanism 2 includes a plurality of rotating swing rollers 21 for adjusting the tension of the diaphragm 100.

[0032] In this embodiment, the driving mechanism 1 is preferably a high-speed linear motor, and the high-speed linear motor is provided with three movers, namely a first mover 11 and two second movers 12, the first mover 11 is located between the two second movers 12, the second mover 12 on the left can be installed with the negative electrode stacking hand mechanism 3, and the second mover 12 on the right can be installed with the positive electrode stacking hand mechanism 3, the second mover 12 can drive the negative electrode stacking hand mechanism 3 and the positive electrode stacking hand mechanism 3 to move, and the first mover 11 can drive the diaphragm swing roller mechanism 2 to move. In this embodiment, the rotating swing roller 21 of the diaphragm swing roller mechanism 2 can not only rotate, but also swing around a certain axis to adjust the tension of the diaphragm 100.

[0033] In this embodiment, a first mover 11 and a second mover 12 are arranged on the driving mechanism 1. The first mover 11 can drive the diaphragm swing roller mechanism 2 to move, so as to adjust the position of the diaphragm 100, and the rotating swing roller 21 in the diaphragm swing roller mechanism 2 can adjust the tension of the diaphragm 100 to prevent the diaphragm 100 from wrinkling during the lamination process. The second mover 12 can drive the lamination hand mechanism 3 to move, so as to realize the stacking of the diaphragm 100 and the pole piece, thereby solving the technical problem of wrinkling of the diaphragm 100 during the lamination process in the related art.

[0034] Further, see Figure 2 As shown, in one embodiment, the driving mechanism 1 is a linear motor, the first mover 11 and the second mover 12 both move in a straight line, and the movement directions of the first mover 11 and the second mover 12 are the same. In this embodiment, the first mover 11 and the second mover 12 both move in the left-right direction, the spacing direction of the first mover 11 and the second mover 12 is also the left-right direction, and the movement trajectories of the first mover 11 and the two second movers 12 do not interfere with each other.

[0035] Of course, in other embodiments, the driving mechanism 1 is not limited to a linear motor, and the first mover 11 and the second mover 12 are not limited to a single linear motion, but may also move in two directions or may also be a curved motion.

[0036] Further, see Figure 2As shown, in some embodiments, the stacking hand mechanism 3 is installed on the second mover 12 through the stacking hand lifting mechanism 4. In this embodiment, the stacking hand lifting mechanism 4 is installed on the second mover 12, and the second mover 12 can drive the stacking hand lifting mechanism 4 to move in the horizontal plane, for example, move in the left and right directions along a straight line. At the same time, the stacking hand mechanism 3 is installed on the stacking hand lifting mechanism 4, and the stacking hand lifting mechanism 4 can drive the stacking hand mechanism 3 to move up and down, so that the stacking hand mechanism 3 can not only move left and right, but also move up and down, so as to realize the grabbing and placement of the positive and negative electrode sheets.

[0037] Based on the above technical solution, see Figure 2 and Figure 3 As shown, in one embodiment, the stacking hand lifting mechanism 4 may include: a stacking hand back plate 41, which is fixed to the second mover 12; a driving motor 42, which is installed on the stacking hand back plate 41, the driving motor 42 is connected to a vertically arranged ball screw 43, the ball screw 43 is fixed with a driving plate 44, and the stacking hand mechanism 3 is installed on the driving plate 44. In this embodiment, the driving motor 42 is preferably a servo motor, the stacking hand back plate 41 is fixed to the second mover 12, and the second mover 12 can drive the stacking hand back plate 41 to move left and right, so that the stacking hand back plate 41 drives the driving motor 42, the ball screw 43, the driving plate 44 and the stacking hand mechanism 3 to move left and right, and at the same time, the driving motor 42 can control the rotation of the ball screw 43, drive the driving plate 44 to move vertically up and down, and the driving plate 44 drives the stacking hand mechanism 3 to move vertically up and down.

[0038] Further, see Figure 2 As shown, in some optional embodiments, the driving plate 44 may include: a first moving plate 441, the first moving plate 441 is fixed to the ball screw 43; a second moving plate 442, the second moving plate 442 is connected to the first moving plate 441 through a buffer cylinder 443, and the stacking hand mechanism 3 is installed on the second moving plate 442. In this embodiment, the driving plate 44 is split into a first moving plate 441 and a second moving plate 442, the first moving plate 441 and the second moving plate 442 are connected through a buffer cylinder 443, after the ball screw 43 drives the first moving plate 441 to move up and down, the buffer cylinder 443 can drive the second moving plate 442 to move up and down, and then drive the stacking hand mechanism 3 to move up and down; at the same time, the use of the buffer cylinder 443 can balance the deadweight of the stacking hand mechanism 3.

[0039] Of course, in other embodiments, the driving plate 44 may also be a whole plate.

[0040] Further, see Figure 1 and Figure 4As shown, in one embodiment, the diaphragm swing roller mechanism 2 may further include: a fixed frame 22, the fixed frame 22 is equipped with a first motor 23, and a plurality of the rotating swing rollers 21 are installed on the fixed frame 22, the first motor 23 is connected to the rotating swing roller 21, and in a working state, the first motor 23 can drive the plurality of rotating swing rollers 21 to rotate in the same direction as a whole around the axis of the first motor 23; at least two first swing rollers 24, the first swing rollers 24 are installed on the fixed frame 22, and along a moving direction perpendicular to the diaphragm 100, the axes of at least two of the first swing rollers 24 are facing each other, and the axes of the plurality of rotating swing rollers 21 are staggered. In this embodiment, the first motor 23 is preferably a servo motor. The first motor 23 has an output shaft and is preferably provided with two rotating swing rollers 21. The output shaft of the first motor 23 is fixed with a fixed block. The two rotating swing rollers 21 are both mounted on the fixed block, so that when the output shaft of the first motor 23 rotates, it can drive the two rotating swing rollers 21 to rotate in the same direction around the axis of the first motor 23 as a whole, so as to control the tension of the diaphragm 100, wherein the diaphragm 100 passes between the two rotating swing rollers 21. It is also preferred to provide two first swing rollers 24, the two first swing rollers 24 are located below the two rotating swing rollers 21, the axes of the two first swing rollers 24 are located in the same horizontal plane, and the axes of the two rotating swing rollers 21 are located in different horizontal planes. The first swing roller 24 can rotate around its axis under the pull of the diaphragm 100. In other embodiments, more than two first swing rollers 24 and rotating swing rollers 21 may also be provided.

[0041] Further, see Figure 1 and Figure 4 As shown, in some embodiments, the diaphragm swing roller mechanism 2 may further include at least two second swing rollers 25 mounted on the fixed frame 22, and the axes of at least two second swing rollers 25 are directly opposite to each other along the moving direction perpendicular to the diaphragm 100; the second swing roller 25 and the first swing roller 24 are located on opposite sides of the rotating swing roller 21 along the moving direction of the diaphragm 100. In this embodiment, the second swing roller 25 is located above the rotating swing roller 21, and preferably two second swing rollers 25 are provided, the axes of the two second swing rollers 25 are located in the same horizontal plane, and the diaphragm 100 passes between the two second swing rollers 25; in this embodiment, the diaphragm 100 first passes through the uppermost second swing roller 25, and then passes through the middle rotating swing roller 21 to fine-tune the tension of the diaphragm 100, reduce the wrinkles of the diaphragm 100, and finally passes through the lowermost first swing roller 24 for output.

[0042] In some optional embodiments, the diaphragm swing roller mechanism 2 further includes two guide rods 26, and the two guide rods 26 are located between the first swing roller 24 and the rotating swing roller 21. In this embodiment, the axes of the two guide rods 26 are located in the same horizontal plane, and the diaphragm 100 passes between the two guide rods 26, and the guide rods 26 can guide the diaphragm 100.

[0043] Further, see Figure 1 As shown, in one embodiment, the stacking device may further include a positive electrode deviation correction positioning platform 5 located on one side of one stacking hand mechanism 3, and a negative electrode deviation correction positioning platform 6 located on the other side of the stacking hand mechanism 3. In this embodiment, the positive and negative electrodes are inspected for defective incoming materials, alignment accuracy, etc. on the positive electrode deviation correction positioning platform 5 and the negative electrode deviation correction positioning platform 6. After the inspection and correction are completed, the positive electrode stacking hand mechanism 3 or the negative electrode stacking hand mechanism 3 grabs the electrode and places it on the stacking table 8. The positive electrode deviation correction positioning platform 5 and the negative electrode deviation correction positioning platform 6 are mainly used to correct and adjust the positions of the positive and negative electrodes, thereby improving the stacking quality and reducing the misalignment of the electrodes.

[0044] See also Figure 1 As shown, in some embodiments, the stacking device further includes a stacking platform lifting mechanism 7, and the stacking platform lifting mechanism 7 is installed with a stacking platform 8. In this embodiment, the stacking platform 8 is installed on the stacking platform lifting mechanism 7, and the stacking platform lifting mechanism 7 can control the stacking platform 8 to move up and down, so that the stacking platform 8 can always remain at the same horizontal plane during stacking.

[0045] Taking the positive electrode stacking arm mechanism 3 as an example, the positive electrode stacking arm sucks the electrode sheet on the positive electrode correction positioning platform 5 and then lifts up, and quickly moves to the stacking platform 8 through a linear motor, and descends to break the vacuum to release the positive electrode sheet. At the same time, the stacking press 9 on the stacking platform 8 presses the positive electrode sheet and the diaphragm 100; the negative electrode stacking arm mechanism 3 moves, sucks and places the negative electrode sheet, and repeats the same action to complete the stacking of "electrode sheet-diaphragm 100-pole sheet".

[0046] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0047] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0048] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A lamination device, characterized in that: It includes: A driving mechanism (1), the driving mechanism (1) comprising a first mover (11) and two second movers (12) located on both sides of the first mover (11), a diaphragm swing roller mechanism (2) being installed on the first mover (11), a lamination hand mechanism (3) being installed on the second mover (12), the diaphragm swing roller mechanism (2) comprising a plurality of rotating swing rollers (21) for adjusting the tension of the diaphragm (100).

2. The lamination device according to claim 1, characterized in that: The driving mechanism (1) is a linear motor, the first mover (11) and the second mover (12) both move along a straight line, and the first mover (11) and the second mover (12) move in the same direction.

3. The lamination device according to claim 1, characterized in that: The stacking hand mechanism (3) is installed on the second mover (12) via a stacking hand lifting mechanism (4).

4. The lamination device according to claim 3, characterized in that: The stacking hand lifting mechanism (4) comprises: A laminated hand back plate (41) fixed to the second mover (12); A drive motor (42) is mounted on the laminated hand back plate (41), the drive motor (42) is connected to a vertically arranged ball screw (43), the ball screw (43) is fixed with a drive plate (44), and the laminated hand mechanism (3) is mounted on the drive plate (44).

5. The lamination device according to claim 4, characterized in that: The driving plate (44) comprises: A first movable plate (441), wherein the first movable plate (441) is fixedly mounted on the ball screw (43); A second movable plate (442), wherein the second movable plate (442) is connected to the first movable plate (441) via a buffer cylinder (443), and the stacking hand mechanism (3) is installed on the second movable plate (442).

6. The lamination device according to claim 1, characterized in that: The diaphragm swing roller mechanism (2) further comprises: A fixed frame (22), the fixed frame (22) being equipped with a first motor (23), and the plurality of rotating swing rollers (21) being equipped on the fixed frame (22), the first motor (23) being connected to the rotating swing rollers (21), and in a working state, the first motor (23) can drive the plurality of rotating swing rollers (21) to rotate as a whole around an axis of the first motor (23) in the same direction; At least two first swing rollers (24) are installed on the fixed frame (22), and along a moving direction perpendicular to the diaphragm (100), the axes of at least two of the first swing rollers (24) are directly opposite, and the axes of the plurality of rotating swing rollers (21) are staggered.

7. The lamination device according to claim 6, characterized in that: The diaphragm swing roller mechanism (2) further comprises at least two second swing rollers (25) mounted on the fixed frame (22), and the axes of the at least two second swing rollers (25) are directly opposite to each other along a moving direction perpendicular to the diaphragm (100); The second swing roller (25) and the first swing roller (24) are located on opposite sides of the rotating swing roller (21) along the moving direction of the diaphragm (100).

8. The lamination device according to claim 6, characterized in that: The diaphragm swing roller mechanism (2) further comprises two guide rods (26), wherein the two guide rods (26) are located between the first swing roller (24) and the rotating swing roller (21).

9. The lamination device according to claim 1, characterized in that: The lamination device further comprises a positive pole deviation correction positioning platform (5) located on one side of one lamination hand mechanism (3), and a negative pole deviation correction positioning platform (6) located on the other side of the lamination hand mechanism (3).

10. The lamination device according to claim 1, characterized in that: The lamination device further comprises a lamination platform lifting mechanism (7), and the lamination platform lifting mechanism (7) is equipped with a lamination platform (8).

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