A stacking mechanism and device

Abstract

This utility model relates to a stacking mechanism and apparatus. The stacking mechanism includes a stacking platform driving assembly, a stacking platform assembly, a feeding assembly, a diaphragm assembly, and a fixing assembly. The stacking platform assembly has two opposite sides configured as a first stacking platform and a second stacking platform, respectively. The stacking platform driving assembly is connected to the stacking platform assembly and drives the stacking platform assembly to rotate, thereby flipping the first stacking platform and the second stacking platform to a stacking station or a unloading station, respectively. The feeding assembly provides electrode sheets to the stacking station. The diaphragm assembly is located above the stacking platform assembly and provides a diaphragm to the stacking station. The fixing assembly is disposed on the stacking platform assembly and used to fix the battery cells that have been stacked on the first stacking platform or the second stacking platform. The stacking mechanism and apparatus can synchronize the battery cell unloading process with the stacking process at the stacking station, increasing the stacking efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of battery cell manufacturing technology, and in particular relates to a stacking mechanism and device. Background Technology

[0002] With the continuous development of the lithium battery industry, various cell manufacturing equipment are emerging one after another. Lithium-ion battery cells are generally stacked, that is, they are composed of positive electrode plates, separators, and negative electrode plates stacked together.

[0003] During cell unloading after lamination, the stacking platform needs to stop operating and wait for unloading to complete, or the two stacking platforms need to be switched back and forth, i.e., switching from one stacking platform to another while unloading cells. Both methods require waiting time, resulting in low overall machine efficiency and impacting equipment capacity. Furthermore, the method of switching between two stacking platforms requires the cutting and feeding mechanism to be moved to adapt to the stacking platform position, and each stack needs its own diaphragm unwinding mechanism, which increases costs. Utility Model Content

[0004] In view of this, the present invention provides a stacking mechanism and device to solve the problem that the stacking platform needs to wait during the cell unloading process, and it is impossible to ensure that the cell unloading process after the completion of the previous stacking is synchronized with the process of the next cell stacking.

[0005] To achieve the above objectives, the technical solution of this utility model is to provide a stacking mechanism, comprising: a stacking platform driving assembly, a stacking platform assembly, a feeding assembly, a diaphragm assembly, and a fixing assembly. The two opposite sides of the stacking platform assembly are respectively configured as a first stacking platform and a second stacking platform. The stacking platform driving assembly is connected to the stacking platform assembly and is used to drive the stacking platform assembly to rotate, thereby flipping the first stacking platform and the second stacking platform to a stacking station or a unloading station, respectively. The feeding assembly is used to provide electrode sheets to the stacking station. The diaphragm assembly is located above the stacking platform assembly and is used to provide a diaphragm to the stacking station. The fixing assembly is disposed on the stacking platform assembly and is used to fix the battery cells that have been stacked on the first stacking platform or the second stacking platform.

[0006] Optionally, the fixing component includes a first fixing member and a second fixing member, both of which are connected to the stacking assembly. The first fixing member and the second fixing member are respectively used to cooperate with the first stacking platform and the second stacking platform to clamp the stacked cells.

[0007] Optionally, the first fixing member includes a first fixing drive member and a first clamping plate, the first fixing drive member being used to drive the first clamping plate to move in a direction perpendicular to the first stacking platform, toward or away from the first stacking platform; the second fixing member includes a second fixing drive member and a second clamping plate, the second fixing drive member being used to drive the second clamping plate to move in a direction perpendicular to the second stacking platform, toward or away from the second stacking platform.

[0008] Optionally, the first fixing drive member is connected to the side of the stacking assembly adjacent to the first stacking platform and the second stacking platform; the first clamping plate is connected to the first fixing drive member and extends towards the side closer to the first stacking platform in a direction parallel to the first stacking platform; the second fixing drive member is connected to the side of the stacking assembly adjacent to the first stacking platform and the second stacking platform; the second clamping plate is connected to the second fixing member and extends towards the side closer to the second stacking platform in a direction parallel to the second stacking platform.

[0009] Optionally, both the first and second fixed drive members are slidably connected to the side of the stacking assembly adjacent to the first and second stacking platforms, and the sliding direction forms an angle with the side.

[0010] Optionally, there are multiple first and second fasteners, and each of the multiple first and second fasteners is respectively disposed on two opposite sides of the stacking assembly adjacent to the first and second stacking assemblies, with the first and second fasteners on each side arranged in an alternating manner.

[0011] Optionally, the stacking mechanism further includes a pressure knife opening and closing assembly. The number of pressure knife opening and closing assemblies is two. The two pressure knife opening and closing assemblies are located on opposite sides of the stacking assembly along the axial direction of the stacking platform drive assembly, and are used to compact the electrode sheets and diaphragms during the stacking process.

[0012] Optionally, the pressure knife opening and closing assembly includes a first base, a second base, and a pressure knife. The first base is configured to move closer to or further away from the stacking assembly in a horizontal direction. The second base is slidably connected to the first base to slide relative to the first base in a direction perpendicular to the ground. The pressure knife is connected to the second base and extends toward the stacking assembly.

[0013] Optionally, the stacking mechanism further includes a feeding robot located at the feeding station for feeding the battery cells at the feeding station.

[0014] This utility model also provides a stacking device, including a stacking mechanism and an electrode feeding mechanism, wherein the electrode feeding mechanism is used to provide electrodes to the stacking mechanism.

[0015] Compared with the prior art, the stacking mechanism and device provided by this utility model have the following advantages:

[0016] The switching between the stacking station and the unloading station is achieved by flipping a first and second stack that are positioned relative to each other. During the flipping process, a fixing component is used to secure the battery cells stacked on the first or second stack, ensuring the stability of the battery cells during the flipping process. After flipping to the unloading station, the fixing component is released to complete the unloading of the battery cells. Furthermore, the battery cell unloading process can be carried out synchronously with the stacking process at the stacking station, thereby increasing the stacking efficiency. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of a stacking mechanism provided in the first embodiment of the present utility model;

[0018] Figure 2 for Figure 1 Front view of the mid-layer laminate structure;

[0019] Figure 3 For Figure 1 A schematic diagram illustrating the working principle of the interlayer stacking mechanism;

[0020] Figure 4 for Figure 1 Schematic diagram of the mid-stack drive assembly;

[0021] Figure 5 for Figure 1 A magnified view of a section at point A in the middle;

[0022] Figure 6 for Figure 1 A magnified view of a section at point B in the middle;

[0023] Figure 7 for Figure 1 A schematic diagram of the mechanism of the loading and unloading robot;

[0024] Explanation of reference numerals in the attached figures:

[0025] 10. Stacking platform drive assembly; 11. Drive connector; 12. Drive motor; 13. Rotating shaft; 20. Stacking platform assembly; 21. First stacking platform; 22. Second stacking platform; 30. Feeding assembly; 40. Diaphragm assembly; 41. Diaphragm unwinding component; 42. Diaphragm cutting component; 50. Fixing assembly; 51. First fixing component; 511. First fixing drive component; 512. First clamping plate; 52. Second fixing component; 521. Second fixing drive component; 522. Second clamping plate; 60. Pressure knife opening and closing assembly; 61. First base; 62. Second base; 63. Pressure knife; 70. Bracket; 80. Unloading robot; 81. Unloading module; 82. Unloading tray; 821. Vertical part; 822. Horizontal part. Detailed Implementation

[0026] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0027] It should be noted that all directional indications in the embodiments of this application are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0028] Furthermore, the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0029] like Figures 1-3 As shown, the first embodiment of this utility model provides a stacking mechanism, which includes a stacking platform driving assembly 10, a stacking platform assembly 20, a feeding assembly 30, a diaphragm assembly 40 and a fixing assembly 50. The two opposite sides of the stacking platform assembly 20 are respectively configured as a first stacking platform 21 and a second stacking platform 22. The stacking platform driving assembly 10 is connected to the stacking platform assembly 20 and is used to drive the stacking platform assembly 20 to rotate, so as to flip the first stacking platform 21 and the second stacking platform 22 to the stacking station or the unloading station respectively.

[0030] Feeding assembly 30 is used to supply electrode sheets to the stacking station;

[0031] The diaphragm assembly 40 is located above the stacking assembly 20 and is used to supply the diaphragm to the stacking station;

[0032] The fixing component 50 is disposed on the stacking assembly 20 and is used to fix the battery cells that have been stacked on the first stacking platform 21 or the second stacking platform 22.

[0033] It is understood that the first stacking platform 21 and the second stacking platform 22 are both platforms on the stacking assembly 20 that can be used for stacking. The stacking drive assembly 10 can drive the stacking assembly 20 to rotate, so that the first stacking platform 21 or the second stacking platform 22 rotates to the stacking station. When the first stacking platform 21 is in the stacking station, the second stacking platform 22 is in the unloading station. At this time, the feeding assembly 30 provides positive / negative electrode sheets to the first stacking platform 21, and the separator assembly 40 provides separators to the first stacking platform 21, thereby stacking the sheets on the first stacking platform 21 to form a battery cell. Next, the fixing component 50 fixes the battery cell onto the first stacking platform 21, and the stacking platform driving component 10 flips the stacking platform component 20 so that the first stacking platform 21 is located at the unloading station and the second stacking platform 22 is located at the loading station. In this way, when the second stacking platform 22 is performing the stacking operation, the fixing component 50 can release the battery cell, so that the battery cell on the first stacking platform 21 can be unloaded at the same time, thereby realizing the synchronous operation of the stacking and unloading processes without waiting, and improving the stacking efficiency.

[0034] In some examples, such as Figure 4 As shown, the stacking platform drive assembly 10 includes a drive connector 11, a drive motor 12, and a rotating shaft 13. The drive motor 12 is connected to the drive connector 11. One end of the rotating shaft 13 is connected to the output end of the drive motor 12, and the other end away from the drive motor 12 is connected to the stacking platform assembly 20. The axis of the rotating shaft 13 is equal to the distance between the first stacking platform 21 and the second stacking platform 22.

[0035] It is understandable that the rotating shaft 13 can be connected to the stacking assembly 20 in any way, such as the rotating shaft 13 passing through the stacking assembly 20 and being plugged into the stacking assembly 20, as long as the rotating shaft 13 can drive the stacking assembly 20 to rotate.

[0036] By setting the rotating shaft 13 at a distance equal to that between the axis and the first stack 21 and the second stack 22 respectively, it can be ensured that the positions of the first stack 21 and the second stack 22 switch exactly when the stack assembly 20 rotates 180°.

[0037] In some examples, the feeding assembly 30 includes multiple feeding clamps that sequentially place the positive electrode and the negative electrode at the stacking station.

[0038] Understandably, the efficiency of stacking can be improved by working together with multiple feeders.

[0039] It should be noted that the feeding clamp can have any structure, as long as it can work together to transport the electrode sheets to the stacking station.

[0040] In some examples, such as Figure 3 As shown, the diaphragm assembly 40 includes a diaphragm unwinding member 41 and a diaphragm cutting member 42. The diaphragm unwinding member 41 is used to provide the diaphragm to the stacking station, and the diaphragm cutting member 42 is used to cut the diaphragm.

[0041] It is understandable that the diaphragm unwinding component 41 can be a pinch roller structure. After the pinch roller structure picks up the diaphragm, it sends the diaphragm to the stacking station. After the stacking is completed, the diaphragm is cut by the diaphragm cutting component 42. In this way, the diaphragm can be provided during stacking and cut after stacking is completed.

[0042] In some examples, such as Figure 1 , 5 As shown, the fixing component 50 includes a first fixing member 51 and a second fixing member 52. Both the first fixing member 51 and the second fixing member 52 are connected to the stacking assembly 20. The first fixing member 51 and the second fixing member 52 are respectively used to cooperate with the first stacking platform 21 and the second stacking platform 22 to clamp the stacked cells.

[0043] Understandably, by cooperating with the first fixing member 51 and the first stacking platform 21, the battery cells located on the first stacking platform 21 are clamped and fixed after the stacking is completed. Similarly, by cooperating with the second fixing member 52 and the second stacking platform 22, the battery cells located on the second stacking platform 22 are clamped and fixed after the stacking is completed. In this way, when the stacking assembly 20 is flipped, the battery cells on the first stacking platform 21 or the second stacking platform 22 can be fixed independently by the first fixing member 51 or the second fixing member to prevent the battery cells from falling off.

[0044] It should be noted that in other examples, the fixing component 50 may not distinguish between the first fixing member 51 and the second fixing member 52, but may cooperate with both the first stacking platform 21 and the second stacking platform 22 simultaneously, clamping the battery cell only during the flipping process of the stacking platform assembly 20. For example, after the battery cell stacking on the first stacking platform 21 is completed, the fixing component 50 cooperates with both the first stacking platform 21 and the second stacking platform 22 to clamp the battery cell on the first stacking platform 21. After the stacking platform assembly 20 flips, the fixing component 50 releases the battery cell on the first stacking platform 21, allowing the battery cell to be unloaded, without interfering with the stacking operation of the second stacking platform 22.

[0045] Furthermore, the first fixing member 51 includes a first fixing drive member 511 and a first clamping plate 512. The first fixing drive member 511 is used to drive the first clamping plate 512 to move in a direction perpendicular to the first stacking platform 21 toward or away from the first stacking platform 21.

[0046] The second fixing member 52 includes a second fixing drive member 521 and a second clamping plate 522. The second fixing drive member 521 is used to drive the second clamping plate 522 to move in a direction perpendicular to the second stacking platform 22 toward or away from the second stacking platform 22.

[0047] It is understood that the strokes of the first clamping plate 512 and the second clamping plate 522 can be controlled by the first fixed driving member 511 and the second fixed driving member 521 respectively, thereby adapting to cells with different stacking layers. Moreover, the first fixed driving member 511 and the second fixed driving member 521 can automatically drive the first clamping plate 512 and the second clamping plate 522 to move respectively.

[0048] It should be noted that in other examples, the first fixed drive member 511 and the second fixed drive member 521 can be omitted, and the first clamping plate 512 and the second clamping plate 522 can be directly set to engage with the first stacking platform 21 and the second stacking platform 22 respectively to fix the stacked cells. As long as the cells do not fall off when the stacking platform assembly 20 is flipped.

[0049] Furthermore, the first fixed drive member 511 is connected to the side of the stack assembly 20 adjacent to the first stack 21 and the second stack 22, and the first clamping plate 512 is connected to the first fixed drive member 511 and extends towards the side closer to the first stack 21 in a direction parallel to the first stack 21.

[0050] The second fixed drive member 521 is connected to the side of the stacking assembly 20 adjacent to the first stacking platform 21 and the second stacking platform 22. The second clamping plate 522 is connected to the second fixed drive member 521 and extends towards the side closer to the second stacking platform 22 in a direction parallel to the second stacking platform 22.

[0051] It is understandable that when the first fixing drive member 511 and the second fixing drive member 521 drive the first clamping plate 512 and the second clamping plate 522 to move respectively, the portion of the first clamping plate 512 extending toward the first stacking platform 21 is used to cooperate with the surface of the first stacking platform 21 to clamp the battery cell, and the portion of the second clamping plate 522 extending toward the second stacking platform 22 is used to cooperate with the surface of the second stacking platform 22 to clamp the battery cell. By connecting the first fixing drive member 511 and the second fixing drive member 521 to the side, interference between the first fixing drive member 511 and the second fixing drive member 521 and the stacking operation on the first stacking platform 21 and the second stacking platform 22 can be avoided.

[0052] It should be noted that the first fixed driving member 511 and the second fixed driving member 521 can be any driving element such as a cylinder, and the first clamping plate 512 and the second clamping plate 522 can be slidably connected to the first fixed driving member 511 and the second fixed driving member 521 by setting guide rails and sliders in any way, as long as the first fixed driving member 511 and the second fixed driving member 521 can drive the first clamping plate 512 and the second clamping plate 522 to slide respectively.

[0053] Furthermore, both the first fixed drive member 511 and the second fixed drive member 521 are slidably connected to the side of the stacking assembly 20 adjacent to the first stacking platform 21 and the second stacking platform 22, and the sliding direction is at an angle to the side.

[0054] It is understandable that the first fixed drive member 511 and the second fixed drive member 521 can also be slidably connected to the sides adjacent to the first stacking platform 21 and the second stacking platform 22 by any means such as a cylinder, so that the first fixed drive member 511 and the second fixed drive member 521 can slide away from the stacking platform assembly 20, further avoiding interference with the stacking operation caused by the first fixed drive member 511, the first clamping plate 512, the second fixed drive member 521 and the second clamping plate 522. In this example, the method of slidable connection between the first fixed drive member 511 and the second fixed drive member 521 and the side is not limited, as long as it can achieve the sliding of the first fixed drive member 511 and the second fixed drive member 521 away from or close to the stacking platform assembly 20.

[0055] Preferably, the sliding direction of the first fixed drive member 511 and the second fixed drive member 521 is perpendicular to the side of the stack assembly 20.

[0056] Furthermore, a first fixing member 51 and a second fixing member 52 are provided on the two opposite sides of the stacking assembly 20 that are adjacent to the first stacking platform 21 and the second stacking platform 22.

[0057] It is understandable that by providing a first fixing member 51 and a second fixing member on both opposite sides, that is, the first fixing member 51 is respectively provided on the two opposite sides, and the second fixing member 52 is also respectively provided on the two opposite sides, the first fixing member 51 and the second fixing member 52 can clamp and fix the battery cell from both opposite sides, thereby increasing the stability of clamping and fixing.

[0058] It should be noted that in other examples, the first fixing member 51 and the second fixing member 52 can be provided only on one side, as long as the shape of the first clamping plate 512 and the second clamping plate 522 is configured to stably clamp and fix the battery cell.

[0059] Furthermore, there are multiple first fasteners 51 and second fasteners 52, with the first fasteners 51 and second fasteners 52 arranged alternately on each side.

[0060] It is understandable that multiple first fixing members 51 and second fixing members 52 can be used to accommodate electrode sheets of different lengths and sizes. At the same time, the staggered arrangement can make reasonable use of space. It not only arranges multiple first fixing members 51 and second fixing members 52, but also ensures that the first fixing members 51 and second fixing members 52 on both sides clamp and fix the cells on the first stack 21 and the second stack 22 at reasonable distances.

[0061] In this example, three first fasteners 51 and two second fasteners 52 are respectively provided on two opposite sides. That is, on the two opposite sides of the stacking assembly 20 adjacent to the first stacking platform 21 and the second stacking platform 22, three first fasteners 51 and two second fasteners 52 are provided on one side, and two first fasteners 51 and three second fasteners 52 are provided on the other side.

[0062] It should be noted that the sides adjacent to the first stack 21 and the second stack 22 mentioned above do not include the two sides in the axial direction of the stack drive assembly 10.

[0063] In some examples, such as Figure 1 , 5 As shown, the stacking mechanism also includes a pressure knife opening and closing assembly 60. There are two pressure knife opening and closing assemblies 60. The two pressure knife opening and closing assemblies 60 are located on opposite sides of the stacking assembly 20 along the axial direction of the stacking drive assembly 10, and are used to compact the electrode and the diaphragm during the stacking process.

[0064] It is understandable that during the stacking process, when the electrode and the separator are fed to the surface of the first stacking platform 21 or the second stacking platform 22, there may be a slight gap between them (such as due to feeding deviation or uneven separator tension). By using the pressure knife opening and closing component 60 to compact the electrode and separator once for each stacking layer, it can ensure that the cell layers are tightly bonded and eliminate gaps.

[0065] It should be noted that the pressure knife opening and closing assembly 60 is configured to move towards or away from the stacking assembly 20 in order to avoid interference with the stacking and flipping process.

[0066] Furthermore, the pressure knife opening and closing assembly 60 includes a first base 61, a second base 62, and a pressure knife 63. The first base 61 is configured to move closer to or further away from the stacking assembly 20 in a horizontal direction. The second base 62 is slidably connected to the first base 61 so as to slide relative to the first base 61 in a direction perpendicular to the ground. The pressure knife 63 is connected to the second base 62 and extends toward the stacking assembly 20.

[0067] Understandably, by moving the first base 61 closer to or further away from the stacking assembly 20, the second base 62 and the pressure knife 63 can be moved closer to or further away from the stacking assembly, thereby achieving the effect of compacting the electrode and separator and avoiding interference during the stacking process. When it is necessary to compact the electrode and separator, the first base 61 moves closer to the stacking assembly 20 until the pressure knife 63 moves above the stacking assembly 20. At this time, the second base 62 slides against the first base 61 towards the ground, thereby driving the pressure knife 63 to compact the electrode and separator.

[0068] It should be noted that the driving method for the first base 61 to move closer to or further away from the stacking assembly 20 and the second base 62 to slide relative to the first base 61 in a direction perpendicular to the ground can be any driving unit such as a cylinder or a lead screw module, as long as it can achieve the above functions.

[0069] In this example, the stacking mechanism also includes a support 70, the stacking platform drive assembly 10 and the pressure knife opening and closing assembly 60 are all connected to the support 70, and the first base 61 is slidably connected to the support 70 via a guide rail, and the second base 62 is also slidably connected to the first base 61 via a guide rail. The structures of the pressure knife 63, the second base 62 and the first base 61 are all mirror-symmetrical along a plane perpendicular to the ground and coinciding with the axis of the stacking platform drive assembly 10.

[0070] In some examples, such as Figure 2 , 7 As shown, the stacking mechanism also includes a feeding robot 80, which is located at the feeding station and is used to feed the battery cells at the feeding station.

[0071] Understandably, when the first stacking platform 21 or the second stacking platform 22 completes the stacking and rotates to the unloading station, the corresponding fixing component 50 releases the battery cell, allowing the battery cell to fall onto the unloading robot arm 80, thus completing the battery cell unloading operation.

[0072] Furthermore, the unloading robot 80 includes an unloading module 81 and an unloading tray 82. The unloading tray 82 is located at the unloading station and is connected to the unloading module 81 via a transmission. The unloading module 81 is used to drive the unloading tray 82 to move in a direction parallel to the axis of the stacking drive assembly 10.

[0073] Understandably, when the fixing component 50 releases the battery cell, the battery cell falls onto the unloading tray 82 and is then transported away by the unloading module 81 to the next process. In this example, the unloading tray 82 can be moved under the drive of the unloading module 81 to be directly below the first stack 21 or the second stack 22 when it is flipped to the unloading station. After the fixing component 50 releases the battery cell, the battery cell falls directly onto the unloading tray 82 to increase unloading efficiency.

[0074] It should be noted that the unloading tray 82 and the unloading module 81 can be connected by a threaded transmission of a slider and a lead screw, or by any other transmission connection method, as long as the unloading module 81 can drive the unloading tray 82 to move in a direction parallel to the axis of the stacking platform drive assembly 10.

[0075] Furthermore, the unloading tray 82 includes a vertical part 821 and a horizontal part 822. The vertical part 821 is connected to the horizontal part 822. The horizontal part 822 is used to receive the battery cell. Its side near the ground is connected to the unloading module 81. The vertical part 821 has an air hole that is connected to an external air source.

[0076] Understandably, after the wafers are stacked on the first stacking platform 21 or the second stacking platform 22 at the stacking station and flipped to the unloading station, the separator is cut. The battery cell is then released from the fixing assembly 50, and after the cell falls onto the horizontal part 822, air is released through the vents on the vertical part 821. This air then adsorbs the separator extending from the battery cell and transports it to the next process. In other words, the vents are used to adsorb the cut separator from the battery cell.

[0077] The second embodiment of this utility model provides a stacking device, including a stacking mechanism and an electrode feeding mechanism. The electrode feeding mechanism is used to provide electrodes to the stacking mechanism.

[0078] It is understood that the electrode feeding mechanism may include an electrode die-cutting assembly and an electrode conveying assembly. The electrode die-cutting assembly is used to die-cut the electrode to produce electrodes that meet the requirements, and then conveys them to the stacking mechanism via the electrode conveying assembly. The feeding assembly 30 of the stacking mechanism picks up the electrodes and provides them to the stacking station. Specifically, the electrode conveying assembly can convey positive and negative electrodes to their respective positions, and the feeding assembly 30 picks up the positive and negative electrodes from their respective positions.

[0079] The working principle of this utility model is as follows: In the initial state, the first stacking platform 21 is located at the stacking station, and the second stacking platform 22 is located at the unloading station. The diaphragm unwinding component 41 provides the diaphragm to the first stacking platform 21. Multiple feeding clamps sequentially provide the positive electrode sheet and the negative electrode sheet to the first stacking platform 21, and they cooperate with the diaphragm to be stacked sequentially to form a battery cell. After the battery cell is formed on the first stacking platform 21, the first fixing drive component 511 drives the first clamping plate 512 to clamp and fix the battery cell. The drive motor 12 drives the rotating shaft 13 to rotate, causing the stacking platform assembly 20 to rotate 180°. At this time, the first stacking platform 21 is located at the unloading station, and the second stacking platform 22 is located at the stacking station. Then, the diaphragm unwinding component 41 and the feeding clamps continue to stack the battery cells on the second stacking platform 22. At the same time, the diaphragm cutting component 42 cuts the diaphragm, and the first fixing drive component 511 drives the first clamping plate 512 to release the battery cell, so that the battery cell falls onto the unloading robot 80, completing the unloading. The process is repeated until the cells on the second stack 22 are stacked and formed into a battery cell.

[0080] Compared with existing technologies, the stacking mechanism and device provided by this utility model achieves the switching between the stacking station and the unloading station by flipping the relatively arranged first and second stacking platforms. During the flipping process, the battery cells formed by stacking on the first or second stacking platform are fixed by a fixing component to ensure the stability of the battery cells during the flipping process. After flipping to the unloading station, the fixing component is released to complete the unloading of the battery cells. Furthermore, the battery cell unloading process can be carried out synchronously with the stacking process at the stacking station, thereby increasing the stacking efficiency.

[0081] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A stacking mechanism, characterized in that, include: The stacking assembly includes a stacking drive assembly, a stacking assembly, a feeding assembly, a diaphragm assembly, and a fixing assembly. The two opposite sides of the stacking assembly are respectively configured as a first stacking assembly and a second stacking assembly. The stacking drive assembly is connected to the stacking assembly and is used to drive the stacking assembly to rotate so as to flip the first stacking assembly and the second stacking assembly to the stacking station or the unloading station, respectively. The feeding assembly is used to provide electrode sheets to the stacking station; The diaphragm assembly is located above the stacking assembly and is used to provide the diaphragm to the stacking station; The fixing component is disposed on the stacking assembly and is used to fix the battery cells that have been stacked on the first stacking platform or the second stacking platform.

2. The stacking mechanism as described in claim 1, characterized in that: The fixing component includes a first fixing member and a second fixing member, both of which are connected to the stacking assembly. The first fixing member and the second fixing member are respectively used to cooperate with the first stacking platform and the second stacking platform to clamp the stacked cells.

3. The stacking mechanism as described in claim 2, characterized in that: The first fixing member includes a first fixing drive member and a first clamping plate. The first fixing drive member is used to drive the first clamping plate to move in a direction perpendicular to the first stacking platform, toward or away from the first stacking platform. The second fixing member includes a second fixing drive member and a second clamping plate. The second fixing drive member is used to drive the second clamping plate to move in a direction perpendicular to the second stacking platform, toward or away from the second stacking platform.

4. The stacking mechanism as described in claim 3, characterized in that: The first fixing drive member is connected to the side of the stacking assembly adjacent to the first stacking platform and the second stacking platform. The first clamping plate is connected to the first fixing drive member and extends towards the side closer to the first stacking platform in a direction parallel to the first stacking platform. The second fixing drive member is connected to the side of the stacking assembly adjacent to the first stacking platform and the second stacking platform. The second clamping plate is connected to the second fixing drive member and extends towards the side of the second stacking platform in a direction parallel to the second stacking platform.

5. A stacking mechanism as described in claim 3, characterized in that: Both the first and second fixed driving members are slidably connected to the side of the stacking assembly adjacent to the first and second stacking platforms, and the sliding direction forms an angle with the side.

6. The stacking mechanism as described in claim 2, characterized in that: There are multiple first and second fasteners. Each of the multiple first and second fasteners is disposed on two opposite sides of the stacking assembly adjacent to the first and second stacking platforms. The first and second fasteners on each side are arranged in an alternating manner.

7. The stacking mechanism as described in claim 1, characterized in that: The stacking mechanism also includes a pressure knife opening and closing assembly. There are two pressure knife opening and closing assemblies, which are located on opposite sides of the stacking platform assembly along the axial direction of the stacking platform drive assembly, and are used to compact the electrode sheets and diaphragms during the stacking process.

8. A stacking mechanism as described in claim 7, characterized in that: The pressure knife opening and closing assembly includes a first base, a second base, and a pressure knife. The first base is configured to move closer to or further away from the stacking assembly in a horizontal direction. The second base is slidably connected to the first base to slide relative to the first base in a direction perpendicular to the ground. The pressure knife is connected to the second base and extends toward the stacking assembly.

9. A stacking mechanism as described in claim 1, characterized in that: The stacking mechanism also includes a feeding robot, which is located at the feeding station and is used to feed the battery cells at the feeding station.

10. A stacking device, characterized in that: Includes a stacking mechanism and an electrode feeding mechanism as described in any one of claims 1-9, wherein the electrode feeding mechanism is used to provide electrodes to the stacking mechanism.

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