Laminated device

Abstract

The application relates to a laminating device, which comprises a laminating mechanism, a swing roller mechanism, a fixing mechanism and a cutting mechanism. After the completion of the laminating of the battery cell, the fixing mechanism fixes the diaphragm between the output end of the swing roller mechanism and the laminating table on the first adsorption surface, the diaphragm is clamped by the blocking assembly, and the cutting mechanism cuts off the diaphragm between the first pressing member and the laminating table. The cut-off diaphragm is adsorbed by the first adsorption surface, and the first pressing member can abut the adsorbed diaphragm against the side surface of the laminating table. Then, the swing roller mechanism and the laminating table move relatively along the first direction, and the diaphragm is clamped or released by the blocking assembly, so that the first layer of diaphragm is laid on the bearing surface. Since the diaphragm can be adsorbed and fixed by the first adsorption surface before and after cutting, and the free section formed after the diaphragm is cut off can be pulled to the laminating table under the driving of the first pressing member, the first layer of diaphragm does not need to be corrected after being laid. Therefore, the laminating device can improve the laminating efficiency.

Description

Technical Field

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

[0002] The manufacturing process of lithium-ion battery cells requires alternating stacking of positive and negative electrode sheets, separated by a separator. The Z-type stacking process involves placing pre-cut electrode sheets sequentially on a stacking table, with a separator folded over each sheet to form a Z-shape. The separator used in the Z-type stacking process is continuous. After a cell is stacked, the separator needs to be cut to prepare the cell. The cut separator first forms a free segment with one end that swings. This free segment needs to be pulled back onto the stacking table to serve as the first separator layer for the next cell.

[0003] After the battery cells are cut, the diaphragm in the free section is typically blown onto the stacking table's bearing surface using a backflushing method. The airflow causes a degree of randomness in the diaphragm's movement, making it prone to misalignment, wrinkles, and edge flipping. Therefore, after backflushing, the diaphragm needs to be corrected, which takes a considerable amount of time, resulting in low stacking efficiency. Summary of the Invention

[0004] Therefore, it is necessary to provide a stacking device that can improve stacking efficiency in order to address the above problems.

[0005] A stacking device, comprising:

[0006] A stacking mechanism includes a stacking table, the stacking table having a bearing surface and a side surface;

[0007] The oscillating roller mechanism includes a partition assembly, the diaphragm can pass around the oscillating roller mechanism and be output from the output end of the oscillating roller mechanism, the oscillating roller mechanism and the stacking table can reciprocate relative to each other in a first direction so that the diaphragm is laid in a Z-shape on the bearing surface, and the partition assembly can clamp or release the diaphragm.

[0008] A fixing mechanism includes a first pressing member, which is disposed on one side of the stacking table along the first direction and is movable along the first direction. The first pressing member includes a first adsorption surface, and is capable of switching between a first state in which the first adsorption surface is parallel to the bearing surface and a second state in which the first adsorption surface faces the side surface.

[0009] A cutting mechanism used to cut the diaphragm;

[0010] After the stacking is completed, the swing roller mechanism is located on the side of the first pressing member facing away from the stacking table. The fixing mechanism can fix the diaphragm between the output end of the swing roller mechanism and the stacking table to the first adsorption surface. The cutting mechanism can cut the diaphragm between the first pressing member and the stacking table. After the diaphragm is cut, the first pressing member switches from the first state to the second state and moves towards the stacking table along the first direction until the adsorbed diaphragm is held against the side surface.

[0011] In one embodiment, the fixing mechanism further includes a base and a rotating shaft. The base is mounted on the stacking mechanism and located on one side of the stacking table along the first direction. The first pressing member is rotatably mounted on the base via the rotating shaft. The first pressing member is capable of rotating around the rotating shaft to switch between the first state and the second state.

[0012] In one embodiment, the fixing mechanism further includes a second pressing member. When the first pressing member is in the first state, the second pressing member can move along a second direction perpendicular to the bearing surface and press the diaphragm between the output end of the swing roller mechanism and the stacking table onto the first adsorption surface.

[0013] In one embodiment, the second pressing member has an air blowing hole on its surface facing the stacking stage and / or the first pressing member.

[0014] In one embodiment, the second pressing member is mounted on the swing roller mechanism, and after the stacking is completed, the second pressing member can move with the swing roller mechanism to above the first pressing member.

[0015] In one embodiment, the second holding member is mounted on the cutting mechanism, and when the cutting mechanism enters a cutting station capable of cutting the diaphragm between the first holding member and the stacking table, the second holding member can move with the cutting mechanism to above the first holding member.

[0016] In one embodiment, the cutting mechanism includes a cutter, a cutting drive, a support, and an elastic member. The cutter and the second holding member are both mounted on the support. The elastic member is disposed between the second holding member and the support. The cutting drive can drive the support to move along the second direction. During the movement of the support towards the first holding member along the second direction, the second holding member can contact the diaphragm before the cutter and press the diaphragm against the first holding member. As the support continues to move, the elastic member can be deformed under pressure and cause the cutter to move relative to the second holding member along the second direction until the diaphragm is cut.

[0017] In one embodiment, the stacking mechanism further includes a support body and a first lifting assembly. The first lifting assembly, the stacking platform, and the first pressing member are all mounted on the support body, and the stacking platform can move along a second direction perpendicular to the bearing surface under the drive of the first lifting assembly.

[0018] In one embodiment, the stacking mechanism further includes a second lifting component, the support body being disposed at the movable end of the second lifting component and capable of moving along the second direction under the drive of the second lifting component.

[0019] In one embodiment, a negative pressure hole is provided on the bearing surface, and the bearing surface can perform vacuum adsorption on the diaphragm laid on the bearing surface by means of the negative pressure hole.

[0020] In one embodiment, the cutting mechanism includes a cutter with an insulating protective layer on one side, and the insulating protective layer is located on the side of the cutter facing the stacking table when the cutting mechanism enters a cutting station capable of cutting the diaphragm between the first pressing member and the stacking table.

[0021] In one embodiment, the device further includes a lower wire gripper fixedly connected to the cutting mechanism, the lower wire gripper being used to grip the battery cell located on the bearing surface;

[0022] The lower wire gripper can move with the cutting mechanism to move the held battery cell away from the bearing surface.

[0023] In the aforementioned stacking device, after the battery cells are stacked, the fixing mechanism fixes the diaphragm between the output end of the swing roller mechanism and the stacking table to the first adsorption surface. The partition component clamps the diaphragm, and the cutting mechanism cuts the diaphragm between the first holding member and the stacking table. The cut diaphragm is adsorbed by the first adsorption surface, and the first holding member can hold the adsorbed diaphragm against the side surface of the stacking table. Then, the swing roller mechanism and the stacking table move relative to each other in the first direction, and cooperate with the partition component to clamp or release the diaphragm, so that the first layer of diaphragm can be laid on the bearing surface. Since the diaphragm can be adsorbed and fixed by the first adsorption surface before and after cutting, and the free segment formed after the diaphragm is cut can be pulled to the stacking table by the first holding member, no correction is required after the first layer of diaphragm is laid. Therefore, the aforementioned stacking device can improve the stacking efficiency. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a front view of the stacking device in one embodiment of the present invention;

[0026] Figure 2 for Figure 1 Front view of the stacking mechanism in the stacking device shown;

[0027] Figure 3 for Figure 2 Left side view of the stacking mechanism shown;

[0028] Figure 4 for Figure 2 A top view of the stacking mechanism shown;

[0029] Figure 5 for Figure 1 A partial structural diagram of the fixing mechanism in the stacking device shown;

[0030] Figure 6 This is a schematic diagram of the cutting mechanism in another embodiment of the present invention;

[0031] Figures 7 to 20 for Figure 1 A simplified schematic diagram of the state changes of the stacking device during the stacking process;

[0032] Figures 21 to 25 This is a simplified schematic diagram illustrating the state changes of the stacking device during the stacking process in another embodiment. Detailed Implementation

[0033] 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.

[0034] 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.

[0035] 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.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] Please see Figure 1 In one embodiment of the present invention, the stacking device 10 includes a stacking mechanism 100, a swing roller mechanism 200, a fixing mechanism 300, and a cutting mechanism 400.

[0040] The stacking mechanism 100 enables the stacking of electrode sheets and separators to obtain a battery cell. Specifically, the electrode sheets include positive electrode sheets and negative electrode sheets, which can be stacked alternately on the stacking mechanism 100. The separator is disposed between adjacent positive and negative electrode sheets to separate them.

[0041] In addition, in order to successfully obtain the electrode sheets required for stacking and unload the stacked cells from the stacking mechanism 100, the stacking device 10 in this embodiment also includes a sheet picking mechanism (not shown) and a wire unloading gripper 500.

[0042] Please refer to the following: Figure 2 and Figure 3 The stacking mechanism 100 includes a stacking table 110. The stacking table 110 can be a plate-like structure formed from a material with high mechanical strength, such as metal, and is generally rectangular. The stacking table 110 has a bearing surface 111 and side surfaces 112, with the side surfaces 112 distributed on the sides of the stacking table 110. In actual use, the bearing surface 111 of the stacking table 110 faces upward and is used to support the electrode and diaphragm. The electrode picking mechanism can pick up the electrode and place it sequentially on the bearing surface 111. The bearing surface 111 and the side surfaces 112 generally form a 90-degree angle, so when the bearing surface 111 faces upward, the side surfaces 112 face to the left or right.

[0043] Please refer to the following: Figure 4 In this embodiment, a negative pressure hole 101 is provided on the bearing surface 111, and the bearing surface 111 can adsorb the membrane laid on the bearing surface 111 by means of the negative pressure hole 101.

[0044] Specifically, the negative pressure holes 101 can be evenly distributed on the bearing surface 111, or they can be distributed only at specific locations on the bearing surface 111, such as one edge. The negative pressure holes 101 can be connected through a pipeline vacuum generator, thereby creating negative pressure at the contact surface between the bearing surface 111 and the diaphragm. During cell stacking, a diaphragm layer, i.e., the first diaphragm, needs to be laid on the bearing surface 111 first. The negative pressure holes 101 enable the first diaphragm to reliably adhere to the bearing surface 111, thereby preventing displacement of the first diaphragm during the stacking process and helping to improve the quality of the battery cell.

[0045] In this embodiment, the stacking mechanism 100 further includes a support body 120 and a first lifting assembly 130. Stacking stages 110 are all mounted on the support body 120, and the stacking stages 110 can move along a second direction perpendicular to the bearing surface 111 under the drive of the first lifting assembly 130. Specifically, the second direction refers to... Figure 1 The vertical direction is shown. The first lifting assembly 130 can be a cylinder, electric cylinder, or motor with a matching screw pair, etc. It can be seen that the first lifting assembly 130 can adjust the height of the stacking table 110 as needed during the stacking process, thereby ensuring the smooth progress of the stacking process.

[0046] Furthermore, in this embodiment, the stacking mechanism 100 also includes a second lifting component 140. The support body 120 is disposed at the movable end of the second lifting component 140 and can move along a second direction under the drive of the second lifting component 140. The second lifting component 140 may have the same structure as the first lifting component 130. The second lifting component 140 can adjust the height of the stacking mechanism 100 as a whole, thereby making the stacking mechanism 100 applicable to more application scenarios.

[0047] Furthermore, in this embodiment, the stacking mechanism 100 also includes a pressing component 150, which has a pressing state and a repositioning state. When the pressing component 150 is in the pressing state, it can press the electrode and the separator against the bearing surface 111, thereby preventing the already stacked electrode and separator 11 from loosening or shifting; while when the pressing component 150 is in the repositioning state, it can create a repositioning on the bearing surface 111, thereby facilitating the smooth stacking of the electrode and the separator on the bearing surface 111.

[0048] Specifically, the clamping assembly 150 includes a clamping knife 151 disposed on the edge of the stacking table 110 and a clamping drive 152. The clamping drive 152 can drive the clamping knife 151 to move in a direction parallel to the bearing surface and in a direction perpendicular to the bearing surface, so that the clamping assembly 150 switches between a clamping state and a retraction state. The clamping drive 152 can be an electric cylinder or a pneumatic cylinder. For a rectangular stacking table 110, the clamping knife 151 is preferably distributed at the four apex corners of the stacking table 110.

[0049] Please refer to it again. Figure 1 In actual use, the oscillating roller mechanism 200 is located above the stacking table 110. The continuously unwound diaphragm 11 can pass through the oscillating roller mechanism 200 and be output from its output end. Specifically, the output end of the oscillating roller mechanism 200 is provided with a main drive oscillating roller 220. The diaphragm 11 output from the oscillating roller mechanism 200 can pass through the main drive oscillating roller 220, which can drive the diaphragm 11 to oscillate in a first direction. The first direction is perpendicular to the second direction, specifically referring to... Figure 1 The left and right directions are shown.

[0050] The rolled diaphragm 11 can be pre-wound onto the tensioning shaft and continuously unwound by the tensioning shaft axial swing roller mechanism 200 during the stacking process. Alternatively, the diaphragm 11 can be output from the previous process and directly enter the swing roller mechanism 200. The diaphragm 11 output from the swing roller mechanism 200 can be laid on the bearing surface 111, thereby separating two adjacent electrodes placed on the bearing surface 111 by the wafer-taking mechanism. Specifically, the swing roller mechanism 200 and the stacking table 110 can reciprocate relative to each other along a first direction, cooperating with the wafer-taking mechanism to sequentially place electrodes on the surface of the diaphragm 11, thus enabling the diaphragm 11 output from the swing roller mechanism 200 to be laid in a Z-shape on the bearing surface 111, completing the cell stacking.

[0051] Furthermore, the swing roller mechanism 200 includes a partition assembly 210, which can clamp or release the diaphragm. The partition assembly 210 is generally located upstream of the output end of the swing roller mechanism 200. During the stacking process, the partition assembly 210 releases the diaphragm; after stacking, the partition assembly 210 can switch between clamping and releasing the diaphragm according to actual working conditions. Specifically, in this embodiment, the partition assembly 210 includes a rotating roller 211, a partition drive member 212, and a pressing member 213 located at the drive end of the partition drive member 212. The diaphragm 11 can pass between the pressing member 213 and the rotating roller 211. The partition drive member 212 can drive the pressing member 213 to move closer to or away from the rotating roller 211, thereby clamping or releasing the diaphragm 11.

[0052] Specifically, in this embodiment, the stacking table 110 remains stationary while the swing roller mechanism 200 reciprocates along the first direction. Obviously, in other embodiments, the swing roller mechanism 200 may remain stationary while the stacking table 110 reciprocates along the first direction.

[0053] Before stacking, the swing roller mechanism 200 first lays the first layer of diaphragm, i.e. the first layer of diaphragm, on the bearing surface 111 and stops it on one side of the stacking table 110 in the first direction. Figure 1(As shown on the left), this position can be defined as the starting position for stacking. During the stacking process, the separator assembly 210 releases the separator 11, and the electrode picking mechanism alternately places the positive and negative electrodes on the stacking table 110. Each time an electrode is placed, the swing roller mechanism 200 moves once in the first direction and pulls the separator 11 to cover the electrode, so that there are electrodes between adjacent separators 11. The above operation is repeated until the number of stacked electrodes reaches the required number, and the preparation of a battery cell is completed. The separator 11 laid on the stacking table 110 is folded into a "Z" shape.

[0054] After stacking is completed, the swing roller mechanism 200 stops on the side of the stacking table 110 facing away from the stacking start position in the first direction. In this embodiment, specifically... Figure 1 As shown on the right. At this time, the position of the swing roller mechanism 200 can be defined as the stacking end position.

[0055] The fixing mechanism 300 includes a first pressing member 310, which is disposed on one side of the stacking table 110 along a first direction and is movable along the first direction. Specifically, the first pressing member 310 is mounted on the support body 120. The first pressing member 310 is located on the side of the stacking table 110 facing the aforementioned stacking end position, i.e. Figure 1 As shown on the right side. Moreover, the first pressing member 310 is located between the stacking table 110 and the aforementioned stacking end station. The first pressing member 310 may be a long strip-shaped plate structure, and its extension direction is consistent with the extension direction of the side surface 112 of the stacking table 110.

[0056] Please refer to the following: Figure 5 The first holding member 310 includes a first adsorption surface 311, which can adsorb the diaphragm 11. Specifically, the surface of the first adsorption surface 311 is provided with a first adsorption hole 301, which can be connected to a vacuum generator through a pipeline, thereby forming a negative pressure on the first adsorption surface 311. The first holding member 310 can switch between a first state and a second state. When the first holding member 310 is in the first state, the first adsorption surface 311 is parallel to the bearing surface 111; while when the first holding member 310 is in the second state, the first adsorption surface 311 faces the side surface 112 (see...). Figures 13 to 16 ).

[0057] It should be noted that when the first holding member 310 is in the first state, the first adsorption surface 311 being parallel to the bearing surface 111 means that the orientation of the first adsorption surface 311 and the bearing surface 111 is basically the same, and they do not have to be strictly parallel. Since the angle between the bearing surface 111 and the side surface 112 is approximately 90 degrees, the first holding member 310 also needs to be rotated approximately 90 degrees when switching from the first state to the second state.

[0058] Specifically, in this embodiment, the fixing mechanism 300 further includes a base 330 and a rotating shaft 340. The base 330 is mounted on the stacking mechanism 100 and located on one side of the stacking table 110 along the first direction. The first pressing member 310 is rotatably mounted on the base 330 via the rotating shaft 340. The first pressing member 310 can rotate around the rotating shaft 340 to switch between a first state and a second state.

[0059] The base 330 is roughly U-shaped, with the first pressing member 310 located in the middle of the U-shaped structure. The base 330 can be slidably mounted on the support body 120 along the first direction via a guide rail-slider cooperation structure, allowing the first pressing member 310 to move closer to or further away from the stacking table 110 along the first direction. The rotating shaft 340 drives the first pressing member 310 to rotate, thus enabling the first pressing member 310 to switch states. It is evident that the first pressing member 310 requires relatively little space to move during state switching, allowing for a more compact structure of the fixing mechanism 300.

[0060] After stacking is completed, the oscillating roller mechanism 200 remains at the stacking end position. At this time, the oscillating roller mechanism 200 is located on the side of the first pressing member 310 facing away from the stacking table 110. That is, the first pressing member 310 is located between the oscillating roller mechanism 200 and the stacking table 110, so the diaphragm 11 between the output end of the oscillating roller mechanism 200 and the stacking table 110 will pass through the first pressing member 310. The first pressing member 310 is in the first state after stacking is completed, so the first adsorption surface 311 faces the passing diaphragm 11.

[0061] Next, the fixing mechanism 300 fixes the diaphragm 11 between the output end of the swing roller mechanism 200 and the stacking table 110 to the first adsorption surface 311. During the stacking process, the cutting mechanism 400 is located outside the cutting station, thus avoiding interference with the stacking process. After the stacking is completed, the cutting mechanism 400 enters the cutting station to prepare to cut the diaphragm 11 between the first holding member 310 and the stacking table 110. Specifically, the cutting station is located between the stacking table 111 and the first holding member 310. The cutting mechanism 400 includes a cutter 410. After the cutting mechanism 400 enters the cutting station, it can cut the diaphragm 11 fixed between the first holding member 310 and the stacking table 110 by driving the cutter 410 to move up and down.

[0062] Specifically, in this embodiment, the cutter 410 is a hot cutter. When the cutter 410 is energized and heats up, it can cut the diaphragm 11 it contacts. Furthermore, an insulating protective layer 450 is provided on one side of the cutter 410, and when the cutting mechanism 400 enters the cutting station, the insulating protective layer 450 is located on the side of the cutter 410 facing the stacking table 110, i.e. Figure 1As shown on the left. The insulating protective layer 450 can be made of epoxy resin, which can serve as a buffer and insulation. The insulating protective layer 450 can prevent the cutter 410 from colliding with the stacking table 110 during cutting or adjustment, prevent metal-to-metal contact when powered on, improve safety, and protect the cutter 410 and the stacking table 110.

[0063] Please refer to it again. Figure 1 In this embodiment, the lower wire gripper 500 of the stacking device is fixedly connected to the cutting mechanism 400, and the lower wire gripper 500 is used to grip the battery cell located on the bearing surface 111. Moreover, the lower wire gripper 500 can move with the cutting mechanism 400 to drive the gripped battery cell away from the bearing surface 111.

[0064] Specifically, when the cutting mechanism 400 enters the cutting station, the lower wire gripper 500 can move with the cutting mechanism 400 to the vicinity of the stacking table 110 and grip the battery cell located on the bearing surface 111; when the cutting mechanism 400 exits the cutting station, the lower wire gripper 500 can drive the gripped battery cell away from the bearing surface 111 until the gripped battery cell is moved to the unloading position.

[0065] Therefore, the unloading gripper 500 is linked to the cutting mechanism 400, and can use the time when the cutting mechanism 400 cuts the diaphragm 11 to grip the battery cell on the bearing surface 111. When the cutting mechanism 400 finishes cutting and exits the cutting station, the battery cell separates from the diaphragm 11, and the unloading gripper 500 can then move the battery cell away from the stacking table 110 along with the cutting mechanism 400. Therefore, the unloading operation process for the battery cell can be simplified, thus helping to improve production efficiency.

[0066] It is understood that in other embodiments, the lower clamp 500 and the cutting mechanism 400 may also be driven separately and moved independently by different driving components.

[0067] After the cutting mechanism 400 cuts the diaphragm 11 between the first holding member 310 and the stacking table 110, the stacked cells are disconnected from the diaphragm 11, and the diaphragm 11 will form a free segment. Since the fixing mechanism 300 fixes the diaphragm 11 before the cutting mechanism 400 performs the cutting operation, it can prevent the free segment formed after the diaphragm 11 is cut from being electrostatically attracted to the output end of the swing roller mechanism 200. Moreover, after the diaphragm 11 is cut, it can continue to be attracted and fixed by the first adsorption surface 311, thereby preventing the free segment of the diaphragm 11 from moving randomly.

[0068] Before stacking the next cell, the first holding member 310 switches from a first state to a second state, thereby causing the adsorbed separator 11 to flip and face the side surface 112 of the stacking table 110. Then, the first holding member 310 moves towards the stacking table 110 along a first direction until the adsorbed separator 11 is pressed against the side surface 112, thus fixing the free section of the separator 11 to the stacking table 110. After the free section of the separator 11 is fixed, the swing roller mechanism 200 moves relative to the stacking table 110 along the first direction and, in conjunction with the partition assembly 210, clamps or releases the separator, allowing the first layer of separator to be laid on the bearing surface 111. At this time, the swing roller mechanism 200 returns to the aforementioned stacking starting position, and thus, in conjunction with the cell picking mechanism, the next cell can be stacked.

[0069] Since the diaphragm 11 can be adsorbed and fixed by the first adsorption surface 311 before and after being cut by the cutting mechanism 400, and the free segment of the diaphragm 11 can be pulled to the stacking table 110 under the action of the first pressing member 310, the free segment of the diaphragm 11 is prevented from moving randomly during the process of being pulled to the stacking table 110. Therefore, no correction is required after the first layer of diaphragm is laid. As a result, the time required for the stacking operation of two cells can be significantly shortened, thereby improving the stacking efficiency.

[0070] Please refer to 1 again. In this embodiment, the fixing mechanism 300 further includes a second pressing member 320. When the first pressing member 310 is in the first state, the second pressing member 320 can move along the second direction and press the diaphragm 11 between the output end of the swing roller mechanism 200 and the stacking table 110 onto the first adsorption surface 311.

[0071] The second holding member 320 can have the same structure as the first holding member 310, both being elongated plate-like structures. After stacking, the second holding member 320 can cooperate with the first holding member 310 to clamp the diaphragm 11 between the output end of the swing roller mechanism 200 and the stacking table 110, thereby achieving a more reliable fixation of the diaphragm 11. Moreover, when the second holding member 320 and the first holding member 310 are clamping the diaphragm 11, the vacuuming of the first adsorption hole 301 can be temporarily suspended, thus saving air supply.

[0072] After the cutting mechanism 400 cuts the diaphragm 11, the second holding member 320 moves away from the first holding member 310, thereby exposing the first adsorption surface 311 and the adsorbed diaphragm 11. Before the second holding member 320 moves away from the first holding member 310, a vacuum needs to be drawn into the first adsorption hole 301 to adsorb the cut diaphragm 11 onto the first adsorption surface 311.

[0073] It should be noted that in other embodiments, the fixing mechanism 300 may also use other methods to fix the diaphragm 11 between the swing roller mechanism 200 and the stacking table 110. For example, the first adsorption surface 311 may directly adsorb and fix the diaphragm 11.

[0074] Alternatively, the first holding member 310 may be provided with flip-out pressure claws (not shown) at both ends. When it is necessary to fix the diaphragm 11, the pressure claws flip towards the first adsorption surface 311 to press the diaphragm 11 onto the first adsorption surface 311. After the cutting mechanism 400 cuts the diaphragm 11, the pressure claws can flip away from the first adsorption surface 311, thereby avoiding the first adsorption surface 311 and the diaphragm 11 adsorbed on the first adsorption surface 311.

[0075] Furthermore, in this embodiment, the surface of the second pressing member 320 facing the stacking stage 110 and / or the first pressing member 310 is provided with an air blowing hole (not shown). The air blowing hole can be connected to an air blowing device through a pipeline, thereby enabling air to be blown outward. The surface of the second pressing member 320 facing the stacking stage 110 is... Figure 1 On the left side surface of the second holding member 320, after the diaphragm 11 is cut, air is blown through the air holes on this surface to prevent the free section of the diaphragm 11 from being electrostatically attracted to the second holding member 320. Furthermore, during the separation of the second holding member 320 from the first holding member 310, blowing air into the diaphragm 11 through the air holes facing the first holding member 310 prevents the diaphragm 11 from adhering to the second holding member 320, thereby avoiding tearing of the diaphragm 11.

[0076] In this embodiment, the second pressing member 320 is installed on the swing roller mechanism 200, and after the stacking is completed, the second pressing member 320 can move with the swing roller mechanism 200 to above the first pressing member 310.

[0077] The relative positions of the second holding member 320 and the swing roller mechanism 200 are pre-calibrated, so that when the swing roller mechanism 200 moves to the stacking end position, the second holding member 320 is just above the first holding member 310. In this way, after the stacking is completed, there is no need to adjust the position of the second holding member 320, and the second holding member 320 and the first holding member 310 can cooperate to clamp and fix the diaphragm 11, thus effectively saving time.

[0078] In addition, the fixing mechanism 300 also includes a second driving member 350 disposed on the swing roller mechanism 200. The second driving member 350 can be a cylinder or an electric cylinder, and the second driving member 350 can drive the second pressing member 320 to move along the second direction. When it is necessary to fix the diaphragm 11, the second driving member 350 drives the second pressing member 320 to move along the second direction toward the first pressing member 310, so that the diaphragm 11 can be pressed onto the first adsorption surface 311.

[0079] The following is in conjunction with the accompanying drawings in the instruction manual. Figures 7 to 20 ,right Figure 1 The working process of the stacking device 10 shown is briefly described as follows:

[0080] After the first cell 12 is stacked, the stacking device 10 is in a state of... Figure 7 The state shown is as follows. At this time, the battery cell 12 is pressed onto the stacking table 110 by the pressure knife 151, the swing roller mechanism 200 is located at the stacking end position, the first adsorption surface 311 is roughly flush with the upper surface of the battery cell 12, the second pressing member 320 is located above the first pressing member 310, and the diaphragm 11 between the output end of the swing roller mechanism 200 and the stacking table 110 passes between the second pressing member 320 and the first pressing member 310.

[0081] The second driving member 350 drives the second holding member 320 to move downwards until it abuts against the first holding member 310 and clamps the diaphragm 11. After the second holding member 320 abuts against the first holding member 310, a vacuum generator can be activated to allow the first adsorption surface 311 to vacuum adsorb the diaphragm 11 through the first adsorption hole 301, thereby further enhancing the fixing effect on the diaphragm 11. Alternatively, the vacuum generator can be temporarily not activated, and the diaphragm 11 can be fixed solely by the clamping action of the second holding member 320 and the first holding member 310. Next, the partition driving member 212 drives the pressing member 213 to abut against the rotating roller 211, thereby clamping the diaphragm 11. Since the partition assembly 210 separates the diaphragm 11 only after the fixing mechanism 300 has fixed the diaphragm 11, it avoids pulling on the diaphragm 11 during the process of the second driving member 350 pressing the diaphragm 11 against the first holding member 310. At this time, the stacking device 10 is in the... Figure 8 The state shown.

[0082] The cutting mechanism 400 enters the cutting station and moves the lower wire gripper 500 to a position where it can grasp the stacked battery cells 12. Then, the cutting mechanism 400 starts, the cutter 410 moves from top to bottom to cut the separator 11, and the lower wire gripper 500 grasps the battery cells 12 on the stacking table 110. At this time, the stacking device 10 is in... Figure 9 The state shown.

[0083] The pressure cutter 151 retracts, and the clamping assembly 150 switches to the avoidance state. Next, the control cutting mechanism 400 withdraws from the cutting station, and the unloading gripper 500 also moves the battery cell 12 out of the stacking table 110. It can be seen that the cut diaphragm 11 is still fixed by the cooperation of the second clamping member 320 and the first clamping member 310, and the cut diaphragm 11 will form a free section extending out of the first clamping member 310. At this time, the stacking device 10 is in... Figure 10 The state shown.

[0084] The second driving member 350 drives the second holding member 320 to move upward until it separates from the first adsorption surface 311, while the cut diaphragm 11 is adsorbed and fixed by the first holding member 310. At this time, the stacking device 10 is in the position of Figure 11 The state shown.

[0085] The main drive roller 220 moves along the first direction toward the first holding member 310, thereby relaxing the diaphragm 11 between the partition assembly 210 and the first holding member 310, allowing for the diaphragm 11 to move when the first holding member 310 switches from the first state to the second state. Simultaneously, the first lifting assembly 130 drives the stacking table 110 to rise along the second direction until the bearing surface 111 is flush with or approximately flush with the first adsorption surface 311. At this point, the stacking device 10 is in... Figure 12 The state shown.

[0086] The first holding member 310 is rotated 90 degrees counterclockwise, so that the first adsorption surface 311 faces the side surface 112 of the stacking stage 110. Therefore, the diaphragm 11 and its free section adsorbed on the first holding member 310 will also face the side surface 112. At this time, the stacking device 10 is in the position of Figure 13 The state shown.

[0087] The first pressing member 310 is controlled to move along the first direction toward the stacking stage 110 until the first adsorption surface 311 abuts against the side surface 112 of the stacking stage 110, thereby pressing the free section of the diaphragm 11 between the first adsorption surface 311 and the side surface 112, so as to achieve the positioning of the free section of the diaphragm 11 on the stacking stage 110. At this time, the stacking device 10 is in the position of Figure 14 The state shown. Next, the vacuum generator stops evacuating the first adsorption hole 301, and the first holding member 310 releases the adsorption of the diaphragm 11.

[0088] The isolation drive 212 drives the pressing member 213 to separate from the rotating roller 211, thereby releasing the diaphragm 11, which then straightens under tension (see...). Figure 15 The oscillating roller mechanism 200 moves a certain distance along the first direction from the end position of the stacking process to the beginning position of the stacking process, thereby laying a diaphragm 11 of a preset length on the bearing surface 111. Specifically, the preset length is equal to the total length of the first layer of diaphragms minus the length of the diaphragm 11 located on the side of the stacking table 110 (see...). Figure 16 Next, the partition assembly 210 clamps the diaphragm 11 again, and the first holding member 310 separates from the stacking table 110 (see...). Figure 17 To improve the stability and accuracy of the diaphragm 11 during movement, a vacuum generator can be activated to create a negative pressure on the bearing surface 111 through the negative pressure hole 101, thereby achieving adsorption on the diaphragm 11.

[0089] The partition assembly 210 maintains the clamping of the diaphragm 11, and the swing roller mechanism 200 continues to move along the first direction toward the stacking start position until the swing roller mechanism 200 reaches the stacking start position. During this process, the diaphragm 11 located on the side of the stacking table 110 is gradually dragged to the bearing surface 111, thereby completing the laying of the first layer of diaphragm. At this time, the stacking device 10 is in the position of Figure 18 The state shown.

[0090] When the clamping assembly 150 switches to the clamping state, the clamping knife 151 presses the first-layer diaphragm against the bearing surface 111 (see...). Figure 19 Next, the partition drive 212 actuates to cause the partition assembly 210 to release the diaphragm 11 (see...). Figure 20 At this point, the swing roller mechanism 200 moves to the stacking start position, the first layer of diaphragm is laid, and the tension of the diaphragm 11 is restored to the tension required for stacking. Therefore, the wafer picking mechanism can be started to stack the next cell.

[0091] like Figure 6 As shown, in another embodiment of the present invention, the second pressing member 320 is installed on the cutting mechanism 400, and when the cutting mechanism 400 enters the cutting station, the second pressing member 320 can move with the cutting mechanism 400 to above the first pressing member 310.

[0092] The relative positions of the second holding member 320 and the cutting mechanism 400 are pre-calibrated, so that when the cutting mechanism 400 moves to the cutting station, the second holding member 320 moves exactly above the first holding member 310. In this way, after the stacking is completed, it is only necessary to control the cutting mechanism 400 to enter the cutting station, and there is no need to adjust the position of the second holding member 320, thus effectively saving time.

[0093] At this time, due to the occupation of the second holding member 320, the lower clamp 500 needs to be set separately from the cutting mechanism 400 and driven by a separate drive member.

[0094] When the cutting mechanism 400 enters the cutting station, the second holding member 320 can move along the second direction toward the first holding member 310 under the drive of a separate driving member, thereby cooperating with the first holding member 310 to fix the diaphragm 11. In addition, the second holding member 320 can also move along the second direction toward the first holding member 310 with the cutter 410 during the cutting process of the cutting mechanism 400 cutting the diaphragm 11, and press the diaphragm 11 against the first adsorption surface 311 before the cutter 410 cuts the diaphragm 11.

[0095] Furthermore, in this embodiment, the cutting mechanism 400 includes a cutter 410, a cutting drive 420, a support 430, and an elastic member 440.

[0096] The support 430 provides support, and both the cutter 410 and the second holding member 320 are mounted on the support 430. An elastic member 440 is located between the second holding member 320 and the support 430. The elastic member 440 can be a spring, a cylinder, or an elastic sleeve, etc. The cutting drive 420 can drive the support 430 to move along the second direction, thereby causing the cutter 410 and the second holding member 320 to move along the second direction. Supported by the elastic member 440, the second holding member 320 protrudes relative to the cutter 410 toward the first holding member 310. Therefore, when the cutting mechanism 400 initiates the cutting of the diaphragm 11, and the cutting drive 420 drives the support 430 to move along the second direction toward the first holding member 310, the second holding member 320 can contact the diaphragm 11 before the cutter 410 and press the diaphragm 11 against the first holding member 310. As the support 430 continues to move, the elastic element 440 is able to deform under pressure and cause the cutter 410 to extend relative to the second holding element 320 in the second direction until the diaphragm 11 is cut.

[0097] It is evident that no additional driving component is required to enable the second pressing member 320 to move along the second direction, thus further simplifying the structure of the fixing mechanism 300.

[0098] The following are combined Figures 21 to 25 The operation of the stacking device 10 in another embodiment is briefly described below:

[0099] After the first cell is stacked, the stacking device 10 is in a state of... Figure 21 The state shown is as follows. At this time, the battery cell 12 is pressed onto the stacking table 110 by the pressure knife 151, the swing roller mechanism 200 is located at the stacking end position, the first adsorption surface 311 is roughly flush with the upper surface of the battery cell 12, and the diaphragm 11 between the output end of the swing roller mechanism 200 and the stacking table 110 passes over the first pressing member 310.

[0100] The cutting mechanism 400 enters the cutting station and moves the second holding member 320 above the first holding member 310. Then, the partition drive member 212 drives the pressing member 213 to abut against the rotating roller 211, thereby clamping the diaphragm 11. The main drive swing roller 220 moves along the first direction toward the first holding member 310, thereby relaxing the diaphragm 11 between the stacking tables 110 of the partition assembly 210. Simultaneously, the vacuum generator is activated to allow the first adsorption surface 311 to adsorb the diaphragm 11. At this time, the stacking device 10 is in... Figure 22 The state shown.

[0101] The cutting drive 420 drives the support 430 downward in the second direction. The second holding member 320 contacts the diaphragm 11 before the cutter 410, and presses the diaphragm 11 against the first adsorption surface 311 under the action of the elastic member 440. As the cutting drive 420 continues to drive downward, the cutter 410 extends downward relative to the first holding member 320 and cuts the diaphragm 11 between the stacking table 110 and the first holding member 310. At this time, the stacking device 10 is in the position of Figure 23 The state shown.

[0102] The cutting drive 420 drives the support 430 to move upward along the second direction, causing the cutter 410 to move upward and separating the second holding member 320 from the first adsorption surface 310. The cut diaphragm 11 is fixed by the first holding member 310, and the cut diaphragm 11 will form a free section extending out of the first holding member 310. At this time, the stacking device 10 is in the position of Figure 24 The state shown.

[0103] The cutting mechanism 400 drives the second holding member 320 to exit the cutting station, while the unloading gripper 500 starts to grip the battery cell 12 and move the gripped battery cell 12 out of the stacking table 110. Simultaneously, the main drive roller 220 moves along the first direction toward the first holding member 310, thereby relaxing the diaphragm 11 between the partition assembly 210 and the first holding member 310, allowing for sufficient space to move the diaphragm 11 when the first holding member 310 switches from the first state to the second state. At this time, the stacking device 10 is in... Figure 25 The state shown.

[0104] The subsequent steps are the same as in the previous embodiment. Figures 13 to 20 The corresponding steps are roughly the same, so they will not be repeated here.

[0105] In the aforementioned stacking device 10, after the battery cells are stacked, the fixing mechanism 300 fixes the diaphragm 11 between the output end of the swing roller mechanism 200 and the stacking table 110 to the first adsorption surface 311. The partition assembly 210 clamps the diaphragm 11, and the cutting mechanism 400 cuts the diaphragm 11 between the first holding member 310 and the stacking table 110. The cut diaphragm 11 is adsorbed by the first adsorption surface 311, and the first holding member 310 can hold the adsorbed diaphragm 11 against the side surface 112 of the stacking table 110. Then, the swing roller mechanism 200 and the stacking table 110 move relative to each other in the first direction, and cooperate with the partition assembly 210 to clamp or release the diaphragm 11, so that the first layer of diaphragm can be laid on the bearing surface 111. Since the diaphragm 11 can be adsorbed and fixed by the first adsorption surface 311 before and after cutting, and the free segment formed after the diaphragm 11 is cut can be pulled to the stacking table 110 under the action of the first pressing member 310, no correction is required after the first layer of diaphragm is laid. Therefore, the above-mentioned stacking device 10 can improve the stacking efficiency.

[0106] 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.

[0107] 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 lamination device, characterized by The laminating device comprises: a laminating mechanism comprising a laminating table having a bearing surface and a side surface; a swing roller mechanism comprising a blocking assembly, a diaphragm being capable of being wound around the swing roller mechanism and being outputted by an output end of the swing roller mechanism, the swing roller mechanism and the laminating table being capable of reciprocating relative to each other in a first direction to enable the diaphragm to be laid on the bearing surface in a Z shape, the blocking assembly being capable of clamping or releasing the diaphragm; a fixing mechanism comprising a first pressing member provided on one side of the laminating table along the first direction and being capable of moving along the first direction, the first pressing member comprising a first adsorbing surface, and the first pressing member being capable of switching between a first state in which the first adsorbing surface is parallel to the bearing surface and a second state in which the first adsorbing surface is directed towards the side surface, the fixing mechanism further comprising a second pressing member capable of moving along a second direction perpendicular to the bearing surface and pressing the diaphragm between the output end of the swing roller mechanism and the laminating table to the first adsorbing surface when the first pressing member is in the first state; and a cutting mechanism for cutting the diaphragm; wherein, after the laminating is completed, the swing roller mechanism is located on a side of the first pressing member away from the laminating table, the fixing mechanism is capable of fixing the diaphragm between the output end of the swing roller mechanism and the laminating table to the first adsorbing surface, and the cutting mechanism is capable of cutting the diaphragm between the first pressing member and the laminating table; after the diaphragm is cut, the first pressing member is switched from the first state to the second state and moves along the first direction towards the laminating table until the adsorbed diaphragm is abutted against the side surface. The fixing mechanism further comprises a base and a rotating shaft, the base being mounted to the laminating mechanism and located on one side of the laminating table along the first direction, and the first pressing member being rotatably mounted to the base through the rotating shaft, the first pressing member being capable of rotating around the rotating shaft to switch between the first state and the second state.

2. The lamination device of claim 1, wherein The surface of the second pressing member directed towards the laminating table and / or the first pressing member is provided with air blowing holes.

3. The lamination device of claim 1, wherein The second pressing member is mounted to the swing roller mechanism, and after the laminating is completed, the second pressing member is capable of moving to above the first pressing member along with the swing roller mechanism.

4. The lamination device of claim 3, wherein The second pressing member is mounted to the cutting mechanism, and when the cutting mechanism enters a cutting station capable of cutting the diaphragm between the first pressing member and the laminating table, the second pressing member is capable of moving to above the first pressing member along with the cutting mechanism.

5. The lamination device of claim 1, wherein ​ 6. The lamination device of claim 5, wherein The cutting mechanism comprises a cutter, a cutting driving element, a support and an elastic element, the cutter and the second pressing element are both mounted on the support, the elastic element is arranged between the second pressing element and the support, the cutting driving element can drive the support to move along the second direction, and during the movement of the support along the second direction towards the first pressing element, the second pressing element can contact the diaphragm and press the diaphragm on the first pressing element before the cutter, and along with the continuous movement of the support, the elastic element can be deformed under pressure and make the cutter move along the second direction relative to the second pressing element until the diaphragm is cut off.

7. The lamination device of claim 1, wherein The laminating mechanism further comprises a support body and a first lifting assembly, the first lifting assembly, the laminating table and the first pressing element are all mounted on the support body, and the laminating table can move along a second direction perpendicular to the bearing surface under the driving of the first lifting assembly.

8. The lamination device of claim 7, wherein The laminating mechanism further comprises a second lifting assembly, the support body is arranged at the moving end of the second lifting assembly and can move along the second direction under the driving of the second lifting assembly.

9. The lamination device of claim 1, wherein, The bearing surface is provided with a negative pressure hole, and the bearing surface can vacuum adsorb the diaphragm laid on the bearing surface through the negative pressure hole.

10. The lamination device of claim 1, wherein, The cutting mechanism comprises a cutter, one side of the cutter is provided with an insulating protective layer, and when the cutting mechanism enters the cutting station capable of cutting off the diaphragm between the first pressing element and the laminating table, the insulating protective layer is located on the side of the cutter facing the laminating table.

11. The lamination device of claim 1, wherein Further comprising a lower line clamping jaw fixedly connected with the cutting mechanism, the lower line clamping jaw is used for clamping the battery cell on the bearing surface. Wherein, the lower line clamping jaw can move with the cutting mechanism to drive the clamped battery cell away from the bearing surface.

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