A continuous stacking machine

Abstract

This invention relates to a continuous stacking machine. The continuous stacking machine includes: a diaphragm unwinding mechanism for conveying a diaphragm sequentially through a bonding station, a pick-up station, and a stacking station; a bonding mechanism, positioned corresponding to the bonding station, for bonding positive and negative electrode sheets to both sides of the diaphragm passing through the bonding station, such that the positive and negative electrode sheets are alternately spaced along the length of the diaphragm, and the area between adjacent positive and negative electrode sheets on the diaphragm is a single-layer area; a stacking table, positioned corresponding to the stacking station; and a stacking mechanism, positioned corresponding to the pick-up station, for applying a force to the single-layer area of ​​the passing diaphragm at the pick-up station, causing the diaphragm to bend in the single-layer area and stacked in a "Z" shape onto the stacking table.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing equipment technology, and in particular to a continuous stacking machine. Background Technology

[0002] Lithium-ion batteries are high-energy-density batteries widely used in various portable electronic devices and automotive power batteries. A crucial step in lithium-ion battery manufacturing is lamination, the process of alternately stacking positive electrode sheets, negative electrode sheets, and separators to form a battery cell. This process is currently automated for mass production using lamination machines.

[0003] Existing stacking machines first attach the electrode sheets to the separator, then cut the separator to form a stacking unit consisting of a positive electrode sheet, a separator, and a negative electrode sheet. The stacking unit is then transported to the stacking table for stacking. Material transfer is required between each process step, the process steps are discontinuous and the process flow is long, resulting in low production efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a continuous stacking machine that improves upon the aforementioned shortcomings in addressing the issue of low production efficiency of existing stacking machines.

[0005] A continuous stacking machine, comprising:

[0006] A diaphragm unwinding mechanism is used to transport the diaphragm downstream;

[0007] The patching mechanism is located downstream of the diaphragm unwinding mechanism and is used to attach the positive electrode sheet and the negative electrode sheet to both sides of the diaphragm that it passes through, so that the positive electrode sheet and the negative electrode sheet are alternately arranged along the length of the diaphragm, and the area between adjacent positive electrode sheets and negative electrode sheets on the diaphragm is a single-layer area.

[0008] A stacking stage is arranged downstream of the placement mechanism; and

[0009] A stacking mechanism, arranged between the patching mechanism and the stacking table, is used to apply a force to the single-layer region of the diaphragm as it passes through, causing the diaphragm to bend at the single-layer region and stack onto the stacking table.

[0010] In one embodiment, the stacking mechanism includes a first stacking assembly and a second stacking assembly, with a diaphragm passing between the first stacking assembly and the second stacking assembly; the first stacking assembly has a first pickup portion, and the second stacking assembly has a second pickup portion, the first pickup portion and the second pickup portion moving alternately from an initial position toward the stacking stage during movement;

[0011] As the first pickup unit moves from the initial position toward the stacking stage, the first pickup unit picks up a single-layer area of ​​the diaphragm and moves a preset distance away from the second stacking assembly; as the second pickup unit moves from the initial position toward the stacking stage, the second pickup unit picks up a single-layer area of ​​the diaphragm and moves a preset distance away from the first stacking assembly.

[0012] In one embodiment, the first stack assembly includes a first track, the first pickup unit is disposed on the first track and is controllably movable along the first track.

[0013] In one embodiment, the first track is a closed loop so that the first pickup unit can cyclically pass through the initial position and the stacking stage as it moves along the first track.

[0014] In one embodiment, the second stack assembly includes a second track, the second pickup portion is disposed on the second track and is controllably movable along the second track.

[0015] In one embodiment, the second track is a closed loop, so that the second pickup unit can cyclically pass through the initial position and the stacking stage as it moves along the second track.

[0016] In one embodiment, the first pickup part is a clamping member for clamping and fixing a single-layer region of the diaphragm, or an adsorption member for adsorbing and fixing a single-layer region of the diaphragm.

[0017] The second pickup part is a clamping member for holding and fixing a single-layer region of the diaphragm, or an adsorption member for adsorbing and fixing a single-layer region of the diaphragm.

[0018] In one embodiment, the continuous stacking machine further includes a moving mechanism disposed between the stacking mechanism and the bonding mechanism;

[0019] The moving mechanism can controllably drive the diaphragm to reciprocate between the first stacked assembly and the second stacked assembly, so that the first pickup unit and the second pickup unit can alternately pick up single-layer regions of the diaphragm.

[0020] In one embodiment, the moving mechanism includes a moving seat, a first clamping roller, and a second clamping roller; the moving seat is controllably movable, the first clamping roller and the second clamping roller are rotatably connected to the moving seat about their own axes, and a membrane-penetrating gap is formed between the first clamping roller and the second clamping roller for the diaphragm to pass through.

[0021] In one embodiment, the continuous stacking machine further includes a clamping roller mechanism, which includes a fixed base, a third clamping roller, and a fourth clamping roller. The fixed base is fixedly arranged between the moving mechanism and the bonding mechanism. The third clamping roller and the fourth clamping roller are rotatably connected to the fixed base about their own axes, and a conveying gap is formed between the third clamping roller and the fourth clamping roller for the passing diaphragm to pass through.

[0022] In one embodiment, the patching mechanism includes a first patching roller and a second patching roller, both rotatable about their own axes, with a patching gap formed between the first patching roller and the second patching roller for the diaphragm to pass through.

[0023] The continuous stacking machine further includes a first feeding mechanism and a second feeding mechanism. The first feeding mechanism is used to feed a positive electrode sheet onto the first bonding roller. The first bonding roller rotates and drives the positive electrode sheet into the bonding gap and attaches it to one side of the separator. The second feeding mechanism is used to feed a negative electrode sheet onto the second bonding roller. The second bonding roller rotates and drives the negative electrode sheet into the bonding gap and attaches it to the other side of the separator.

[0024] In one embodiment, the bonding mechanism further includes a first adhesive application section and a second adhesive application section, wherein the first adhesive application section is arranged corresponding to the first bonding pressure roller and is used to apply adhesive to the positive electrode sheet on the first bonding pressure roller.

[0025] The second adhesive coating section is arranged corresponding to the second patch roller and is used to apply adhesive to the negative electrode sheet on the second patch roller.

[0026] In the aforementioned continuous stacking machine, the diaphragm unwinding mechanism continuously conveys the diaphragm downstream, and the diaphragm sequentially passes through the bonding mechanism, the stacking mechanism, and the stacking table. The bonding mechanism attaches the positive and negative electrode sheets to both sides of the diaphragm. The stacking mechanism applies a force to the single-layer area of ​​the diaphragm (i.e., between adjacent positive and negative electrode sheets), causing the diaphragm to bend at the single-layer area under this force, so that the diaphragm is stacked on the stacking table. Thus, in this application, bonding, bending, and stacking are completed during the diaphragm conveying process, eliminating the need to cut the diaphragm and eliminating the need for the diaphragm to stop at any station, achieving continuous stacking and greatly improving production efficiency. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of a continuous stacking machine according to an embodiment of the present invention;

[0028] Figure 2 for Figure 1 The diagram shows the structural schematic of the stacking mechanism of the continuous stacking machine;

[0029] Figure 3 for Figure 1The diagram shows the structure of the chip placement mechanism in a continuous chip stacker.

[0030] Figure 4 for Figure 1 A schematic diagram of the first wafer feeding mechanism of the continuous wafer stacker is shown.

[0031] Figure 5 for Figure 1 The diagram shows the structure of the second feeding mechanism of the continuous stacking machine. Detailed Implementation

[0032] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0033] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0035] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0036] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0037] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0038] Please see Figure 1 and Figure 2 An embodiment of the present invention provides a continuous stacking machine, including a diaphragm unwinding mechanism 10, a bonding mechanism 20, a stacking mechanism 30, and a stacking table (not shown).

[0039] The diaphragm unwinding mechanism 10 is used to transport the diaphragm b1 downstream, so that the diaphragm b1 passes sequentially through the bonding station a1, the pick-up station a2, and the stacking station a3. The bonding mechanism 20 is arranged downstream of the diaphragm unwinding mechanism 10, corresponding to the bonding station a1. This bonding mechanism 20 is used to bond the positive electrode d1 (see...) Figure 3 ) and negative electrode d2 (see Figure 3 The positive electrode d1 and negative electrode d2 are respectively attached to both sides of the separator b1 passing through the bonding station a1, so that the positive electrode d1 and negative electrode d2 are alternately arranged along the length of the separator b1. The area between adjacent positive electrode d1 and negative electrode d2 on the separator b1 is a single-layer area (not shown in the figure). The stacking stage is arranged downstream of the bonding mechanism 20, corresponding to the stacking station a3. The stacking mechanism 30 is arranged between the bonding mechanism 20 and the stacking stage, corresponding to the pick-up station a2. The stacking mechanism 30 is used to apply a force to the single-layer area of ​​the passing separator b1, so that the separator b1 is bent at the single-layer area and stacked on the stacking stage (for example, the separator b1 is bent at the single-layer area and stacked on the stacking stage in a "Z" shape).

[0040] In the aforementioned continuous stacking machine, the diaphragm unwinding mechanism 10 continuously conveys the diaphragm b1 downstream. The diaphragm b1 sequentially passes through the bonding mechanism 20 at bonding station a1, the stacking mechanism 30 at pick-up station a2, and the stacking table at stacking station a3. At bonding station a1, the bonding mechanism 20 attaches the positive electrode d1 and the negative electrode d2 to both sides of the diaphragm b1. At pick-up station a2, the stacking mechanism 30 applies a force to the single-layer region of the diaphragm b1 passing through pick-up station a2 (i.e., between adjacent positive electrode d1 and negative electrode d2). Under the action of this force, the diaphragm b1 bends at the single-layer region, so that the diaphragm b1 is stacked on the stacking table in a "Z" shape. Thus, in this application, the diaphragm b1 is attached, bent, and stacked in a "Z" shape during the conveying process, without the need to cut the diaphragm b1. The diaphragm b1 does not need to stop at each station, thus achieving continuous stacking and greatly improving production efficiency.

[0041] In the embodiments of this application, the stacking mechanism 30 includes a first stacking assembly 31 and a second stacking assembly 32. The diaphragm b1 passing through the stacking station a3 passes between the first stacking assembly 31 and the second stacking assembly 32, meaning that the first stacking assembly 31 and the second stacking assembly 32 are located on opposite sides of the diaphragm b1 passing through the stacking station a3. The first stacking assembly 31 has a first pickup portion 311, and the second stacking assembly 32 has a second pickup portion 321. During movement, the first pickup portion 311 and the second pickup portion 321 alternately move from their initial positions towards the stacking table.

[0042] When the first pickup unit 311 or the second pickup unit 321 moves to the initial position, it picks up a single-layer region of the diaphragm b1. As the first pickup unit 311 moves from the initial position toward the stacking table, it moves the picked-up single-layer region of the diaphragm b1 a predetermined distance away from the second stacking assembly 32, causing the diaphragm b1 to bend at its single-layer region. Similarly, as the second pickup unit 321 moves from the initial position toward the stacking table, it moves the picked-up single-layer region of the diaphragm b1 a predetermined distance away from the first stacking assembly 31, causing the diaphragm b1 to bend at its single-layer region. Thus, with the cooperation of the first pickup unit 311 and the second pickup unit 321, all the diaphragms b1 stacked on the stacking table are bent at their single-layer regions, forming a "Z"-shaped stacking structure.

[0043] Specifically Figure 2In the illustrated embodiment, after the first pickup unit 311 picks up a single-layer region of the diaphragm b1 at the initial position, it moves to the stacking table. During the movement of the first pickup unit 311 from the initial position to the stacking table, the first pickup unit 311 moves downwards and to the left (i.e., the first pickup unit 311 moves in the lower left direction). After the second pickup unit 321 picks up a single-layer region of the diaphragm b1 at the initial position, it moves to the stacking station a3. During the movement of the second pickup unit 321 from the initial position to the stacking table, the second pickup unit 321 moves downwards and to the right (i.e., the second pickup unit 321 moves in the lower right direction).

[0044] It should be noted that if a single-layer region of the diaphragm b1 that has reached the initial position is picked up and fixed by the first pickup unit 311, then the second pickup unit 321 is used to pick up and fix the next single-layer region of the diaphragm b1 that has reached the initial position. If a single-layer region of the diaphragm b1 that has reached the initial position is picked up and fixed by the second pickup unit 321, then the first pickup unit 311 is used to pick up and fix the next single-layer region of the diaphragm b1 that has reached the initial position.

[0045] It should also be noted that the distance between the first pickup part 311 and the second pickup part 321 that pick up two adjacent single-layer regions of the fixed diaphragm is approximately equal to the length of the positive electrode d1 or the negative electrode d2, so that the diaphragm b1 is stacked in a "Z" shape on the stacking table.

[0046] Optionally, the first pickup part 311 is a clamping member for clamping and fixing a single-layer region of the diaphragm b1, that is, the first pickup part 311 uses a clamping method to pick up the single-layer region of the diaphragm b1. Of course, in other embodiments, the first pickup part 311 can also be an adsorption member for adsorbing and fixing a single-layer region of the diaphragm b1, that is, the first pickup part 311 can also use an adsorption method to pick up the single-layer region of the diaphragm b1.

[0047] Optionally, the second pickup unit 321 is a clamping member for clamping and fixing a single-layer region of the diaphragm b1, that is, the second pickup unit 321 uses a clamping method to pick up the single-layer region of the diaphragm b1. Of course, in other embodiments, the second pickup unit 321 can also be an adsorption member for adsorbing the single-layer region of the diaphragm b1, that is, the second pickup unit 321 can also use an adsorption method to pick up the single-layer region of the diaphragm b1.

[0048] Specifically, in this embodiment, the first stacking assembly 31 includes a first track 313. A first pickup unit 311 is disposed on the first track 313 and can be moved controllably along the first track 313, thereby enabling the first pickup unit 311 to move from an initial position to the stacking table, and to generate a certain displacement in a direction away from the second stacking assembly 32 during the movement from the initial position to the stacking table. The first track 313 is a closed loop, so that the first pickup unit 311 can cyclically pass through the initial position and the stacking table during the movement along the first track 313. That is, after the first pickup unit 311 moves from the initial position to the stacking table along the first track 313, it releases the single-layer region of the diaphragm b1 and continues to move back to the initial position along the first track 313, thus repeating the cycle.

[0049] Specifically, in this embodiment, the second stacking assembly 32 includes a second track 323. A second pickup unit 321 is disposed on the second track 323 and can be controllably moved along the second track 323, allowing the second pickup unit 321 to move from an initial position to the stacking table, and to undergo a certain displacement away from the first stacking assembly 31 during this movement. The second track 323 is a closed loop, allowing the second pickup unit 321 to cyclically pass through the initial position and the stacking table during its movement along the second track 323. In other words, after the second pickup unit 321 moves from the initial position to the stacking table along the second track 323, it releases the single-layer region of the diaphragm b1 and continues to move back to the initial position along the second track 323, repeating this cycle.

[0050] Furthermore, there are multiple first pickup units 311, which are arranged along the first track 313 and can move sequentially along the first track 313 in a controlled manner. There are also multiple second pickup units 321, which are arranged along the second track 323 and can move sequentially along the second track 323 in a controlled manner. In this way, by using multiple first pickup units 311 and multiple second pickup units 321 to alternately pick up and fix a single-layer region of the diaphragm b1 passing through the pickup station a2, it is ensured that each single-layer region of the diaphragm b1 reaching its initial position can be picked up and fixed by the corresponding first pickup unit 311 or second pickup unit 321.

[0051] In embodiments of this application, the continuous stacking machine further includes a moving mechanism 40 disposed between the stacking mechanism 30 and the bonding mechanism 20. This moving mechanism 40 can controllably drive the passing diaphragm b1 to reciprocate between the first stacking assembly 31 and the second stacking assembly 32, causing the diaphragm b1 to be picked up and fixed by the first pickup unit 311, or to be picked up and fixed by the second pickup unit 321. Thus, when a single-layer region of the diaphragm b1 currently at its initial position needs to be picked up by the first pickup unit 311, the moving mechanism 40 drives the diaphragm b1 to swing towards the first stacking assembly 31, bringing the single-layer region of the diaphragm b1 currently at its initial position closer to the first pickup unit 311, so that the single-layer region of the diaphragm b1 currently at its initial position is picked up and fixed by the corresponding first pickup unit 311. When the single-layer region of the diaphragm b1 that has reached the initial position needs to be picked up by the second pickup unit 321, the moving mechanism 40 drives the diaphragm b1 to swing towards the second stack assembly 32, so that the single-layer region of the diaphragm b1 that has reached the initial position is closer to the second pickup unit 321, so that the single-layer region of the diaphragm b1 that has reached the initial position is picked up and fixed by the corresponding second pickup unit 321.

[0052] In a specific embodiment, the moving mechanism 40 includes a moving base (not shown), a first clamping roller 41, and a second clamping roller 42. The moving base is controllably movable, and both the first clamping roller 41 and the second clamping roller 42 are rotatably connected to the moving base about their own axes, thereby enabling the moving base to drive the first clamping roller 41 and the second clamping roller 42 to move. A film-passing gap (not shown) is formed between the first clamping roller 41 and the second clamping roller 42 for the passing diaphragm b1 to pass through. Thus, the diaphragm b1 passing through the moving mechanism 40 passes between the first clamping roller 41 and the second clamping roller 42, allowing the moving base to move and drive the diaphragm b1 between the first and second stacked sheet assemblies 31 and 32 to oscillate back and forth as the diaphragm b1 passes through the film-passing gap between the first clamping roller 41 and the second clamping roller 42. Since both the first clamping roller 41 and the second clamping roller 42 are rotatable about their own axes, the diaphragm b1 can pass through the film-passing gap between the first clamping roller 41 and the second clamping roller 42 and be conveyed downstream.

[0053] It should be noted that linear drive mechanisms such as cylinders, electric cylinders, and linear modules can be used to drive the moving base to move back and forth, and no limitation is made here.

[0054] In a specific embodiment, the continuous stacking machine further includes a clamping roller mechanism 50 arranged between the placement mechanism 20 and the moving mechanism 40. The clamping roller mechanism 50 includes a fixed base (not shown), a third clamping roller 51, and a fourth clamping roller 52. The fixed base is fixedly arranged between the moving mechanism 40 and the placement mechanism 20. The third clamping roller 51 and the fourth clamping roller 52 are rotatably connected to the fixed base about their own axes. A conveying gap is formed between the third clamping roller 51 and the fourth clamping roller 52 for the passing diaphragm b1 to pass through. Thus, the diaphragm b1 passing through the placement mechanism 20 passes through the conveying gap between the third clamping roller 51 and the fourth clamping roller 52 and is then conveyed downstream. Since the position of the clamping roller mechanism 50 is fixed, when the diaphragm b1 downstream of the clamping roller mechanism 50 reciprocates under the drive of the moving mechanism 40, the diaphragm b1 upstream of the clamping roller mechanism 50 is not affected by the oscillation, thereby preventing the diaphragm b1 passing through the placement mechanism 20 from also oscillating, which helps ensure the placement quality. Since both the third clamping roller 51 and the fourth clamping roller 52 can rotate around their own axes, the diaphragm b1 can pass through the conveying gap between the third clamping roller 51 and the fourth clamping roller 52 and be conveyed downstream.

[0055] Please see Figure 1 and Figure 3 As shown in the embodiments of this application, the bonding mechanism 20 includes a first bonding roller 21 and a second bonding roller 22, both rotatable about their own axes. A bonding gap (not shown) is formed between the first bonding roller 21 and the second bonding roller 22 for the diaphragm b1 to pass through. The continuous stacking machine also includes a first feeding mechanism 70 and a second feeding mechanism 80. The first feeding mechanism 70 is used to feed the positive electrode d1 onto the first bonding roller 21. The rotation of the first bonding roller 21 drives the positive electrode d1 into the bonding gap and attaches it to one side of the diaphragm b1. The second feeding mechanism 80 is used to feed the negative electrode d2 onto the second bonding roller 22. The rotation of the second bonding roller 22 drives the negative electrode d2 into the bonding gap and attaches it to the other side of the diaphragm b1.

[0056] Thus, the diaphragm b1 passes through the bonding gap between the first bonding roller 21 and the second bonding roller 22 and is conveyed downstream. During the downstream conveying of the diaphragm b1, when a positive electrode d1 needs to be bonded to one side of the diaphragm b1, the first feeding mechanism 70 feeds the positive electrode d1 onto the first bonding roller 21. The positive electrode d1 gradually enters the bonding gap with the first bonding roller 21 and is bonded to one side of the diaphragm b1 by the joint pressure of the first bonding roller 21 and the second bonding roller 22 within the bonding gap. When a negative electrode d2 needs to be bonded to the other side of the diaphragm b1, the second feeding mechanism 80 feeds the negative electrode d2 onto the second bonding roller 22. The negative electrode d2 gradually enters the bonding gap with the second bonding roller 22 and is bonded to the other side of the diaphragm b1 by the joint pressure of the first bonding roller 21 and the second bonding roller 22 within the bonding gap.

[0057] In a specific embodiment, the bonding mechanism 20 further includes a first adhesive application section 91 and a second adhesive application section 92. The first adhesive application section 91 is arranged corresponding to the first bonding roller 21 and is used to apply adhesive to the positive electrode sheet d1 on the first bonding roller 21, so that when the positive electrode sheet d1 follows the first bonding roller 21 into the bonding gap, the positive electrode sheet d1 can be bonded to one side of the separator b1 under the joint pressure of the first bonding roller 21 and the second bonding roller 22.

[0058] The second adhesive application section 92 is arranged corresponding to the second patch roller 22 and is used to apply adhesive to the negative electrode sheet d2 on the second patch roller 22. This allows the negative electrode sheet d2 to be adhered to the other side of the diaphragm b1 under the joint pressure of the first patch roller 21 and the second patch roller 22 when it enters the patch gap along with the second patch roller 22.

[0059] In a specific embodiment, the first bonding roller 21 can be an adsorption roller, which can controllably adsorb and fix the positive electrode sheet d1 on it. Thus, when the first feeding mechanism 70 delivers the positive electrode sheet d1 to the first bonding roller 21, the first bonding roller 21 adsorbs and fixes the positive electrode sheet d1, preventing the positive electrode sheet d1 from shifting position or falling off. When the positive electrode sheet d1 follows the first bonding roller 21 into the bonding gap and is adhered to the separator b1, the first bonding roller 21 releases its adsorption of the positive electrode sheet d1, allowing the positive electrode sheet d1 to be conveyed downstream along with the separator b1.

[0060] The second bonding roller 22 can be an adsorption roller, which can controllably adsorb and fix the negative electrode sheet d2 on it. Thus, when the second feeding mechanism 80 conveys the negative electrode sheet d2 onto the second bonding roller 22, the second bonding roller 22 adsorbs and fixes the negative electrode sheet d2, preventing the negative electrode sheet d2 from shifting or falling off the second bonding roller 22. When the negative electrode sheet d2 follows the second bonding roller 22 into the bonding gap and is adhered to the diaphragm b1, the second bonding roller 22 releases its adsorption on the negative electrode sheet d2, allowing the negative electrode sheet d2 to be conveyed downstream along with the diaphragm b1.

[0061] In a specific embodiment, the continuous stacking machine further includes a pressing mechanism 60 arranged between the bonding mechanism 20 and the clamping roller mechanism 50. The pressing mechanism 60 presses the passing diaphragm b1, so that the positive electrode d1 and the negative electrode d2 are more reliably bonded to both sides of the diaphragm b1.

[0062] Furthermore, the pressing mechanism 60 includes two belt conveyor assemblies 61, with a pressing gap formed between the two belt conveyor assemblies 61 for the diaphragm b1 to pass through. The two belt conveyor assemblies 61 together press the diaphragm b1 passing through the pressing gap, thereby making the positive electrode d1 and the negative electrode d2 more reliably adhered to both sides of the diaphragm b1.

[0063] Furthermore, the belt conveyor assembly 61 includes a drive pulley 611, a driven pulley 612, and a belt 613. The belt 613 is fitted between the drive pulley 611 and the driven pulley 612. The drive pulley 611 can be controlled to rotate about its own axis, thereby driving the driven pulley 612 to rotate via the belt 613. The belt 613 and the diaphragm b1 in contact with it move downstream synchronously, so that the diaphragm b1 passing through the pressing gap is pressed together by the two belts 613.

[0064] Furthermore, the belt conveyor assembly 61 also includes a pressure roller 614. This pressure roller 614 is rotatably arranged between the driving pulley 611 and the driven pulley 612 about its own axis, and it presses the belt 613 against the diaphragm b1 passing through the pressing gap. Thus, the two belts 613 located on either side of the pressing gap press against the diaphragm b1 under the pressure of the two pressure rollers 614.

[0065] Please see Figure 1 and Figure 4 As shown in the embodiments of this application, the first feeding mechanism 70 includes a first unwinding assembly 71, a first cutting assembly 72, and a first conveying assembly (not shown). The first unwinding assembly 71 is used to unwind and output the positive electrode sheet material c1. The first cutting assembly 72 is arranged downstream of the first unwinding assembly 71 and is used to cut the positive electrode sheet material c1 to form a positive electrode sheet d1. The first conveying assembly is arranged between the first cutting assembly 72 and the first bonding roller 21 and is used to convey the positive electrode sheet d1 onto the first bonding roller 21.

[0066] It should be noted that the specific structure of the first unwinding assembly 71 is not limited here, as long as it can unwind and output the positive electrode strip c1. The structure of the first cutting assembly 72 is not limited here, as long as it can cut the passing positive electrode strip c1 to form the positive electrode d1.

[0067] Specifically, in this embodiment, the first conveying assembly includes a first belt conveyor structure 73, a first transfer roller 74, and a second belt conveyor structure 75. The first belt conveyor structure 73 is arranged between the first cutting assembly 72 and the first transfer roller 74, and is used to convey the positive electrode sheet d1 formed by the first cutting assembly 72 onto the first transfer roller 74. The first transfer roller 74 is rotatably arranged between the first belt conveyor structure 73 and the second belt conveyor structure 75 about its own axis, and is used to convey the positive electrode sheet d1 onto the second belt conveyor structure 75 during rotation. The second belt conveyor structure 75 is arranged between the first transfer roller 74 and the first bonding roller 21, and is used to convey the positive electrode sheet d1 onto the first bonding roller 21.

[0068] Optionally, the first transfer roller 74 can controllably adsorb and fix the positive electrode d1, so that when the first transfer roller 74 rotates, it can drive the positive electrode d1 output by the first belt conveyor structure 73 to be conveyed to the second belt conveyor structure 75.

[0069] It should be noted that the specific structure of the first belt conveyor structure 73 is not limited here, as long as it can receive the positive electrode sheet d1 cut by the first cutting component 72 and convey the positive electrode sheet d1 to the first transfer roller 74. The specific structure of the second belt conveyor structure 75 is not limited here, as long as it can receive the positive electrode sheet d1 conveyed by the first transfer roller 74 and convey the positive electrode sheet d1 to the first bonding roller 21.

[0070] In a specific embodiment, the first feeding mechanism 70 further includes a first rejection component (not shown) and a first defective product collection box 76. When a defective positive electrode sheet d1 is detected passing between the first belt conveyor structure 73 and the first transfer roller 74, the first rejection component is used to unload the defective positive electrode sheet d1 into the first defective product collection box 76.

[0071] Please see Figures 1 to 5 As shown in the embodiments of this application, the second feeding mechanism 80 includes a second unwinding assembly 81, a second cutting assembly 82, and a second conveying assembly (not shown). The second unwinding assembly 81 is used to unwind and output the negative electrode sheet material strip c2. The second cutting assembly 82 is arranged downstream of the second unwinding assembly 81 and is used to cut the negative electrode sheet material strip c2 to form a negative electrode sheet d2. The second conveying assembly is arranged between the second cutting assembly 82 and the second bonding roller 22 and is used to convey the negative electrode sheet d2 onto the second bonding roller 22.

[0072] It should be noted that the specific structure of the second unwinding assembly 81 is not limited here, as long as it can unwind and output the negative electrode sheet material c2. The structure of the second cutting assembly 82 is not limited here, as long as it can cut the passing negative electrode sheet material c2 to form the negative electrode sheet d2.

[0073] Specifically, in this embodiment, the second conveying assembly includes a third belt conveyor structure 83, a second transfer roller 84, and a fourth belt conveyor structure 85. The third belt conveyor structure 83 is arranged between the second cutting assembly 82 and the second transfer roller 84, and is used to convey the negative electrode sheet d2 formed by the cutting assembly 82 onto the second transfer roller 84. The second transfer roller 84 is rotatably arranged between the third belt conveyor structure 83 and the fourth belt conveyor structure 85 about its own axis, and is used to convey the negative electrode sheet d2 onto the fourth belt conveyor structure 85 during rotation. The fourth belt conveyor structure 85 is arranged between the second transfer roller 84 and the second bonding roller 22, and is used to convey the negative electrode sheet d2 onto the second bonding roller 22.

[0074] Optionally, the second transfer roller 84 can controllably adsorb and fix the negative electrode sheet d2, so that when the second transfer roller 84 rotates, it can drive the negative electrode sheet d2 output by the third belt conveyor structure 83 to the fourth belt conveyor structure 85.

[0075] It should be noted that the specific structure of the third belt conveyor structure 83 is not limited here, as long as it can receive the negative electrode sheet d2 cut by the second cutting component 82 and convey the negative electrode sheet d2 to the second transfer roller 84. The specific structure of the fourth belt conveyor structure 85 is not limited here, as long as it can receive the negative electrode sheet d2 conveyed by the second transfer roller 84 and convey the negative electrode sheet d2 to the second bonding pressure roller 22.

[0076] In a specific embodiment, the second feeding mechanism 80 further includes a second rejection component (not shown) and a second defective product collection box 86. When a negative electrode sheet d2 passing between the third belt conveyor structure 83 and the second transfer roller 84 is detected to be defective, the second rejection component is used to unload the defective negative electrode sheet d2 into the second defective product collection box 86.

[0077] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0078] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A continuous lamination machine characterized by, The continuous laminating machine comprises: a diaphragm unwinding mechanism for conveying diaphragms downstream; a patching mechanism arranged downstream of the diaphragm unwinding mechanism for attaching positive and negative electrode sheets to both sides of the diaphragms passing through, so that the positive and negative electrode sheets are arranged alternately along the length direction of the diaphragms, and the area between adjacent positive and negative electrode sheets on the diaphragm is a single-layer area; a laminating table arranged downstream of the patching mechanism; and a laminating mechanism arranged between the patching mechanism and the laminating table for applying force to the single-layer area of the diaphragms passing through, so that the diaphragms are bent and stacked on the laminating table at the single-layer area. The laminating mechanism comprises a first laminating assembly and a second laminating assembly, and the diaphragm passes between the first laminating assembly and the second laminating assembly; the first laminating assembly has a first pickup part, and the second laminating assembly has a second pickup part; the first pickup part and the second pickup part move alternately from an initial position to the laminating table during movement; when the first pickup part moves from the initial position to the laminating table, the first pickup part picks up the single-layer area of the diaphragm and moves a preset distance away from the second laminating assembly; when the second pickup part moves from the initial position to the laminating table, the second pickup part picks up the single-layer area of the diaphragm and moves a preset distance away from the first laminating assembly; the first laminating assembly comprises a first track, the first pickup part is arranged on the first track and is controlled to move along the first track; the first pickup part is arranged in multiple, and multiple first pickup parts are arranged along the first track; The continuous laminating machine further comprises a moving mechanism arranged between the laminating mechanism and the patching mechanism; the moving mechanism is controlled to swing the diaphragm passing through back and forth between the first laminating assembly and the second laminating assembly, so that the first pickup part and the second pickup part alternately pick up the single-layer area of the diaphragm passing through; the moving mechanism comprises a moving seat, a first clamping roller and a second clamping roller; the moving seat is controlled to move, and the first clamping roller and the second clamping roller are arranged on the moving seat and rotate around their own axes, and the first clamping roller and the second clamping roller form a diaphragm passing gap for the diaphragm to pass through. The first track is in a closed ring shape, so that the first pickup part can circulate through the initial position and the laminating table during movement along the first track.

2. The continuous lamination machine of claim 1, wherein, The second laminating assembly comprises a second track, and the second pickup part is arranged on the second track and is controlled to move along the second track.

3. The continuous lamination machine of claim 1, wherein, The second track is in a closed ring shape, so that the second pickup part can circulate through the initial position and the laminating table during movement along the second track.

4. The continuous lamination machine of claim 3, wherein, The first pickup part is a clamping piece for clamping and fixing the single-layer area of the diaphragm, or is a suction piece for suction and fixing the single-layer area of the diaphragm; 5. The continuous lamination machine of claim 1, wherein, The second pickup part is a clamping piece for clamping and fixing the single-layer area of the diaphragm, or is a suction piece for suction and fixing the single-layer area of the diaphragm. ​ 6. The continuous lamination machine of claim 1, wherein, The continuous lamination machine further comprises a clamping roller mechanism, which comprises a fixed seat, a third clamping roller and a fourth clamping roller, the fixed seat is fixedly arranged between the moving mechanism and the laminating mechanism, the third clamping roller and the fourth clamping roller are both arranged on the fixed seat and are rotatable about their own axes, and a conveying gap for the diaphragm to pass through is formed between the third clamping roller and the fourth clamping roller.

7. The continuous lamination machine of claim 1, wherein, The laminating mechanism comprises a first laminating compression roller and a second laminating compression roller which are both rotatable about their own axes, and a laminating gap for the diaphragm to pass through is formed between the first laminating compression roller and the second laminating compression roller. The continuous lamination machine further comprises a first sheet feeding mechanism and a second sheet feeding mechanism, the first sheet feeding mechanism is used for feeding the positive electrode sheet to the first laminating compression roller, and the first laminating compression roller rotates to drive the positive electrode sheet into the laminating gap and attach to one side of the diaphragm; the second sheet feeding mechanism is used for feeding the negative electrode sheet to the second laminating compression roller, and the second laminating compression roller rotates to drive the negative electrode sheet into the laminating gap and attach to the other side of the diaphragm.

8. The continuous lamination machine of claim 7, wherein, The laminating mechanism further comprises a first glue applying part and a second glue applying part, the first glue applying part is arranged corresponding to the first laminating compression roller and is used for applying glue to the positive electrode sheet on the first laminating compression roller; The second glue applying part is arranged corresponding to the second laminating compression roller and is used for applying glue to the negative electrode sheet on the second laminating compression roller.

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