Fixing device, laminating apparatus and multi-station tabletting method

Abstract

The application relates to a fixing device, a lamination device and a multi-station tablet pressing method. The fixing device comprises a plurality of pressing knife assemblies, a lifting assembly and a pulling-away assembly. The plurality of pressing knife assemblies are used for abutting and pressing the pole piece and / or the diaphragm. The lifting assembly is in transmission connection with the pressing knife assemblies and is used for driving the pressing knife assemblies to perform lifting movement, so that the pressing knife assemblies are close to the pole piece and / or the diaphragm for pressing or away from the pole piece and / or the diaphragm. The pulling-away assembly is in transmission connection with the pressing knife assemblies and is used for driving the pressing knife assemblies to be close to or away from the pole piece and / or the diaphragm. The fixing device in the embodiment is beneficial to improving the stability of the pressing knife, thereby being beneficial to improving the lamination efficiency and the positioning stability of the lamination process.

Description

Technical Field

[0001] This application relates to the technical field of electrode fixing, and in particular to fixing devices, stacking equipment and multi-station pressing methods. Background Technology

[0002] Lithium-ion batteries, as a type of lightweight battery, are widely used in various fields. Specifically, a lithium-ion battery includes a positive electrode, a negative electrode, and a separator. Generally, a lithium-ion battery consists of an electrode group formed by stacking the negative electrode, separator, and positive electrode. A single lithium-ion battery includes multiple electrode groups, which are stacked in a cyclic manner.

[0003] In related technologies, such as Figure 1 As shown, the stacking process of lithium batteries typically employs a stacking machine. Specifically, the stacking machine includes a release mechanism and a pressing mechanism. The release mechanism releases the separator, and the pressing mechanism includes a left pressing blade and a right pressing blade. During the stacking process from left to right, the left pressing blade presses the topmost electrode, while the right pressing blade presses the bottom electrode. By lifting and removing the blade, it switches to pressing the newly stacked electrode on top of the original topmost electrode. Conversely, during the stacking process from right to left, the right pressing blade presses the topmost electrode, while the left pressing blade presses the bottom electrode. By lifting and removing the blade, it switches to pressing the newly stacked electrode on top of the original topmost electrode. This cycle of left and right pressing blades fixing the electrodes is thus achieved.

[0004] However, this method has the following drawbacks: First, when the stacking rate is high, the efficiency of the driving pressure mechanism is limited by the motor thrust, which makes the pressure drive speed slow and mismatched with the stacking rate. As a result, the cell position inevitably shifts during the process of lifting and pulling away the lower electrode. Second, the pressure is not pressed firmly against one side of the cell, resulting in fewer force-bearing points, which is not conducive to the balanced force on the electrode and makes it easy for the position to shift. Summary of the Invention

[0005] Therefore, it is necessary to provide a fixing device, a stacking equipment, and a multi-station tableting method to address the issue of how to reduce the risk of electrode position displacement.

[0006] A first aspect of this application provides a fixing device, the fixing device comprising:

[0007] Multiple pressure knife assemblies are used to abut and press the electrode sheet and / or diaphragm;

[0008] A lifting assembly is connected to the pressing knife assembly for driving the pressing knife assembly to perform lifting motion, so that the pressing knife assembly moves closer to or away from the electrode and / or the diaphragm;

[0009] The extraction component is connected to the pressing knife component for driving the pressing knife component to move closer to or away from the electrode and / or the diaphragm.

[0010] In one embodiment, the fixing device further includes an electrode loading position for loading the electrode;

[0011] The pressing assembly includes multiple first pressing assemblies and multiple second pressing assemblies, wherein the first pressing assemblies are spaced apart around the electrode loading position along the transmission direction of the electrode sheet; and,

[0012] The second pressing knife assembly is arranged at intervals on the end side of the electrode loading position along a direction perpendicular to the transmission direction.

[0013] In one embodiment, there are multiple lifting components, which are respectively connected to the first pressing knife component and the second pressing knife component to drive the multiple first pressing knife components to move closer to or away from the electrode and / or the diaphragm, and to drive the multiple second pressing knife components to move closer to or away from the electrode and / or the diaphragm.

[0014] The extraction components are multiple, and the multiple extraction components are respectively connected to the first pressing knife component and the second pressing knife component to drive the multiple first pressing knife components to move closer to or away from the electrode and / or the diaphragm, and to drive the multiple second pressing knife components to move closer to or away from the electrode and / or the diaphragm.

[0015] According to a second aspect of this application, a support assembly, a diaphragm feeding device, and the fixing device in the above embodiments are provided;

[0016] The fixing device is assembled onto the support assembly;

[0017] The diaphragm feeding device is rotatably mounted on the support assembly and is arranged adjacent to the diaphragm feeding device. The diaphragm feeding device reciprocates relative to the electrode loading position to provide a diaphragm to the fixing device.

[0018] In one embodiment, the diaphragm feeding device includes a reciprocating drive assembly and a swing roller assembly, the swing roller assembly being disposed on the support assembly and used for winding and / or clamping the diaphragm;

[0019] The reciprocating drive assembly is used to drive the swing roller assembly to reciprocate relative to the fixed device, so that the swing roller assembly drives the diaphragm to cover the electrode of the fixed device.

[0020] In one embodiment, the oscillating roller assembly includes a plurality of diaphragm oscillating rollers, which are aligned vertically and have gaps between them. The diaphragm is wound around the diaphragm oscillating rollers and passes through the gaps to guide the diaphragm to flatly cover the electrode and to recycle excess diaphragm.

[0021] A third aspect of this application provides a multi-station tableting method applied to the tablet stacking equipment in any of the above embodiments, wherein the fixing device includes an electrode loading position for loading the electrode; and the pressing assembly includes a plurality of first pressing assemblies and a plurality of second pressing assemblies.

[0022] The multi-station tableting method includes:

[0023] The first pressing component presses against the first electrode at the electrode loading position, and the second pressing component moves away from the electrode loading position based on the lifting component and the extraction component.

[0024] The diaphragm feeding device moves relative to the electrode loading position to drive the diaphragm to cover the first electrode. The second pressing knife assembly, based on the lifting assembly and combined with the extraction assembly, approaches and presses against the diaphragm covering the first electrode.

[0025] Based on the extraction component and the lifting component, the first pressing knife component is driven to move away from the first electrode plate;

[0026] The second electrode is stacked toward the electrode loading position, and the first pressing knife assembly is driven to approach and press against the second electrode based on the extraction component and the lifting component.

[0027] The diaphragm feeding device moves relative to the electrode loading position to drive the diaphragm to cover the second electrode.

[0028] The first electrode and the second electrode have opposite polarities, and the second electrode is located above the first electrode.

[0029] In one embodiment, the step of driving the first pressure knife assembly to move away from the first electrode plate based on the extraction component in conjunction with the lifting component includes:

[0030] The lifting component raises the first pressing knife component to a first preset height to create a gap between the first pressing knife component and the first electrode, and the extraction component rotates the first pressing knife component to a first preset angle to extract the electrode loading position.

[0031] The first pressure knife assembly, rotated to the first preset angle, is lifted to the second preset height by the lifting assembly;

[0032] Based on the extraction component, the first pressing component is rotated to a second preset angle, and based on the lifting component, the first pressing component is raised to a third preset height to move away from the first electrode.

[0033] In one embodiment, the step of driving the first pressing knife assembly to approach and press against the second electrode plate based on the extraction component in conjunction with the lifting component includes:

[0034] The extraction component drives the first pressing component to rotate from the second preset angle to above the second electrode plate;

[0035] The lifting assembly lowers the first pressing knife assembly from the third preset height to the second preset height or the first preset height, so that the first pressing knife assembly is lowered to press against the second electrode.

[0036] In one embodiment, the diaphragm feeding device moves relative to the electrode loading position to cause the diaphragm to cover the first electrode, including:

[0037] The diaphragm feeding device moves relative to the electrode to cover the first electrode in a parallel state with the first electrode;

[0038] And / or, the diaphragm feeding device moves relative to the electrode loading position to cause the diaphragm to cover the second electrode, including:

[0039] The diaphragm feeding device moves relative to the electrode to cover the second electrode with the diaphragm in a parallel position to the second electrode.

[0040] The aforementioned fixing device, stacking equipment, and multi-station pressing method, through the arrangement of multiple pressing knife assemblies, provide multiple fixing points during the unidirectional diaphragm formation process of the electrode sheets, which helps improve the structural stability of the stacked discharge core structure. Furthermore, both the extraction and lifting assemblies are driven and connected to the pressing knife assemblies, enabling the pressing knife assemblies to move from the electrode sheets and / or diaphragms covering the stacked discharge core structure to the electrode sheets and / or diaphragms covering the topmost layer. This prevents electrode sheet displacement and diaphragm bending deformation, ensuring the installation stability of the topmost electrode sheets and diaphragms. Simultaneously, due to the multiple pressing knife assemblies, if at least one pressing knife assembly lags behind the lifting or extraction assembly, the other pressing knife assemblies can press the electrode sheets and / or diaphragms together, improving the reliability of the fixing device during the wire structure installation process and reducing the risk of electrode sheet and / or diaphragm deformation or displacement. Attached Figure Description

[0041] Figure 1This is a top view of the stacking machine in related technologies.

[0042] Figure 2 This is a top view of the fixing device when the diaphragm is not covered by the uppermost electrode in one embodiment.

[0043] Figure 3 for Figure 2 Side view of the fixing device shown.

[0044] Figure 4 A top view of the fixing device when the uppermost electrode of the diaphragm covering portion shown in one embodiment is installed.

[0045] Figure 5 for Figure 4 Side view of the fixing device shown.

[0046] Figure 6 A top view of the fixing device when the diaphragm covers the entire uppermost electrode sheet as shown in one embodiment.

[0047] Figure 7 for Figure 6 Side view of the fixing device shown.

[0048] Figure 8 This is a flowchart illustrating a multi-station tableting method in one embodiment.

[0049] Explanation of reference numerals in the attached figures:

[0050] 10. Stacking equipment; 100. Fixing device; 110. Pressing knife assembly; 111. First pressing knife assembly; 1111. Electrode pressing knife; 1111a. First electrode pressing knife; 1111b. Second electrode pressing knife; 112. Second pressing knife assembly; 1121. Diaphragm pressing knife; 1121a. First diaphragm pressing knife; 1121b. Second diaphragm pressing knife; 200. Electrode; 201. Long side edge; 202. Wide side edge; 210. First electrode; 220. Second electrode; 300. Diaphragm; 400. Swing roller assembly; 401. Swing roller group; 410. Diaphragm swing roller; X, length direction; Y, width direction; Z, vertical direction. Detailed Implementation

[0051] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are 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 this application. However, this application can be implemented 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 this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0052] The first aspect of this application, see [reference] Figure 2 as well as Figure 3 As shown, a fixing device 100 is provided, including multiple pressure knife assemblies 110, lifting assemblies and extraction assemblies.

[0053] The pressing assembly 110 is used to abut and press the electrode 200 and / or the diaphragm 300. The lifting assembly is drivenly connected to the pressing assembly 110 and is used to drive the pressing assembly 110 to perform lifting movements, so that the pressing assembly 110 moves closer to or away from the electrode 200 and / or the diaphragm 300.

[0054] The extraction component is connected to the pressure knife assembly 110 for driving the pressure knife assembly 110 to approach or move away from the electrode 200 and / or the diaphragm 300.

[0055] Thus, by setting up multiple pressing assemblies 110, the presence of multiple fixed points when the electrode 200 is covered by the diaphragm 300 helps to improve the structural stability of the stacked discharge core structure. Furthermore, both the extraction assembly and the lifting assembly are driven and connected to the pressing assembly 110, enabling the pressing assembly 110 to move from the electrode 200 and / or diaphragm 300 covering the stacked discharge core structure to cover the topmost electrode 200 and / or diaphragm 300. This avoids displacement of the electrode 200 and bending deformation of the diaphragm 300, ensuring the installation stability of the topmost electrode 200 and diaphragm 300. Meanwhile, due to the arrangement of multiple pressing knife assemblies 110, when there is a driving lag between at least one pressing knife assembly 110 and the lifting assembly or the extraction assembly, the electrode 200 and / or diaphragm 300 can be pressed by the pressing knife assemblies 110 in other parts, thereby improving the reliability of the fixing device 100 for the installation process of the wire structure and reducing the risk of deformation or displacement of the electrode 200 and / or diaphragm 300.

[0056] Some embodiments, such as Figures 2 to 7 As shown, the fixing device 100 also includes an electrode loading position for loading the electrode 200.

[0057] The pressing assembly 110 includes a plurality of first pressing assemblies 111 and a plurality of second pressing assemblies 112. The first pressing assemblies 111 are arranged at intervals around the electrode loading position along the transmission direction of the electrode 200. The second pressing assemblies 112 are arranged at intervals at the end of the electrode loading position along a direction perpendicular to the transmission direction.

[0058] Understandably, the first pressing assembly 111 is spaced apart around the electrode loading position, so that when the first pressing assembly 111 is driven by the extraction assembly and the lifting assembly, it can press the periphery of the electrode 200 arranged along the transmission direction. The second pressing assembly 112 is spaced apart along a direction perpendicular to the transmission direction at the end of the loading position, so that when the second pressing assembly 112 is driven by the extraction assembly and the lifting assembly, it can press the end of the electrode 200 arranged along a direction perpendicular to the transmission direction. Thus, by pressing the periphery and end of the stacked cell structure, two mutually perpendicular pressing forces exist in the horizontal direction, which helps improve the stability of the cell structure and reduces the risk of electrode 200 displacement and separator 300 deformation.

[0059] The transmission direction of the electrode 200 refers to the direction in which the electrode 200 is fed from the production line or trolley to the electrode loading position. In one example, the transmission direction is parallel to the movement direction of the diaphragm 300 relative to the electrode 200. This makes it easier for the first pressing assembly 111 to press the edge side of the diaphragm 300, improving the pressing stability of the diaphragm 300.

[0060] In another example, the transmission direction is set in the same direction as the width direction Y or length direction X of the electrode 200. This helps to increase the contact area between the first pressing assembly 111 and the second pressing assembly 112 and the stacked discharge core structure, further improving the uniformity of pressing and the positioning accuracy.

[0061] Furthermore, in the above embodiments, the periphery of the electrode mounting position refers to the adjacent area outside the area enclosed by the outer contour line of the electrode mounting position projected on the horizontal plane, while the end of the electrode mounting position refers to the adjacent area extending from both ends of the projected area perpendicular to the transmission direction.

[0062] In one implementation scenario, the first pressing component 111 can press and cooperate with the wide side edge 202 of the electrode 200 along its own length direction X, and the second pressing component 112 can press and cooperate with the two long side edges 201 of the electrode 200 that are opposite to each other in the width direction Y through the diaphragm 300.

[0063] In one embodiment, such as Figure 2 as well as Figure 4As shown, the first pressing blade assembly 111 is used to press and cooperate with the diaphragm 300, and the second pressing blade assembly 112 is used to press and cooperate with the electrode 200. Thus, by pressing and cooperating the first pressing blade assembly 111 with the wide side edge 202 and the second pressing blade assembly 112 with the long side edge 201, the fixing device 100 can achieve positioning and fixing of the adjacent edges of the electrode 200 when fixing the cells to be stacked. This improves the fixing accuracy and stability of the electrode 200 and the cell, effectively prevents the electrode 200 from shifting and deforming during high-speed stacking, and further improves the stacking efficiency and structural consistency of the cell.

[0064] It is understandable that by pressing the first pressing knife assembly 111 against the diaphragm 300, the first pressing knife assembly 111 can press the diaphragm 300, ensuring the adhesion between the diaphragm 300 and the electrode 200; while by pressing the second pressing knife assembly 112 against the electrode 200, the second pressing knife assembly 112 can press and position the electrode 200.

[0065] Based on this, the second pressing assembly 112 completes the pressing of the electrode 200. That is, the movement path of the second pressing assembly 112 is relatively fixed. When the diaphragm 300 moves in one direction to cover the diaphragm 300, the movement path of the first pressing assembly 111 can be fixed on the same electrode 200 during this process, or it can be transferred from being fixed on one electrode 200 to being fixed on another electrode 200. At the same time, the movement path of the second pressing assembly 112 can be fixed on the same film layer during this process, or it can be transferred from being fixed on one film layer to being fixed on another film layer.

[0066] Thus, during each reciprocating movement of the diaphragm 300, even when the second pressing assembly 112 is switching positions, the first pressing assembly 111 can still press the electrode 200 by pressing the diaphragm 300. Correspondingly, when the second pressing assembly 112 is pressing the electrode 200, the first pressing assembly 111 is switching positions, which ensures the stability of the battery cell. This helps to ensure the positional accuracy of the electrode and the diaphragm 300 even when the stacking efficiency is high, thereby balancing accuracy and efficiency in the stacking process.

[0067] Furthermore, by pressing the electrode 200 with the first pressing assembly 111 and pressing the diaphragm 300 with the second pressing assembly 112, the fixing routes of the first pressing assembly 111 and the second pressing assembly 112 do not need to be complicated to change between fixing the electrode 200 and the diaphragm 300 of different layers. This reduces the driving burden of the extraction assembly and the lifting assembly on the first pressing assembly 111 and the second pressing assembly 112, which is beneficial to improving the driving efficiency of the extraction assembly and the lifting assembly. It also reduces the risk of poor pressing effect due to driving lag of the first pressing assembly 111 and the second pressing assembly 112, and ensures the alignment accuracy of the diaphragm and the electrode 200 during the stacking process.

[0068] The second aspect of this application, as Figures 2 to 7 As shown, an improved stacking device 10 includes a support assembly, a diaphragm feeding device, and a fixing device 100 as described in the above embodiments.

[0069] The fixing device 100 is mounted on the support assembly. The diaphragm feeding device is rotatably mounted on the support assembly and is arranged adjacent to the diaphragm feeding device. The diaphragm feeding device reciprocates relative to the electrode loading position to provide the diaphragm 300 to the fixing device 100.

[0070] Thus, the diaphragm feeding device is rotatably mounted on the support assembly, allowing it to wind or clamp the diaphragm 300. As the electrode 200 reciprocates on both sides, each swing places a layer of diaphragm 300 over one layer of electrode 200, precisely forming a "Z"-shaped stacked structure of "electrode 200-diaphragm 300-electrode 200-diaphragm 300…". Furthermore, the diaphragm feeding device itself provides tension buffering and guidance for the diaphragm 300. In conjunction with the support assembly, it ensures relatively stable tension of the diaphragm 300 during reciprocating motion, preventing the diaphragm 300 from becoming too loose or too tight.

[0071] To facilitate understanding of the stacking process of the stacking equipment 10, a multi-station stacking method is introduced for explanation, in conjunction with the embodiments of the first pressing knife assembly 111 and the second pressing knife assembly 112 in the above embodiments.

[0072] The third aspect of this application is described in [reference]. Figures 2 to 8 A multi-station tableting method is provided, including:

[0073] S100, the first pressing component 111 presses against the first electrode 210 at the electrode loading position, and the second pressing component 112 moves away from the electrode loading position based on the lifting component and the extraction component.

[0074] That is, combining Figure 2 as well as Figure 3As shown, in this step, when the diaphragm 300 does not cover the first electrode 210, the first pressing assembly 111 is configured to press the first electrode 210 to achieve the positioning function of the first electrode 210. The second pressing assembly 112, based on the lifting assembly and the extraction assembly, is moved away from the electrode loading position, so as to prepare for pressing the diaphragm 300.

[0075] S200, the diaphragm feeding device moves relative to the electrode loading position to drive the diaphragm 300 to cover the first electrode 210.

[0076] S300, the second pressing component 112, based on the lifting component and the extraction component, approaches and presses against the diaphragm 300 covering the first electrode 210.

[0077] Specifically, such as Figures 3 to 4 As shown, during the movement of the diaphragm 300 covering the first electrode 210, the second pressing assembly 112 needs to be driven by the extraction assembly to move towards the electrode loading position, so that the second pressing assembly 112 can reach above the diaphragm 300 covering the first electrode 210. Then, it is driven to descend by the lifting assembly so that the second pressing assembly 112 presses the diaphragm 300 covering the first electrode 210.

[0078] S400, based on the extraction component combined with the lifting component, the first pressure knife component 111 is driven to move away from the first electrode 210.

[0079] It is understandable that, such as Figures 3 to 4 As shown, because the second pressing assembly 112 presses the diaphragm 300 covering the first electrode 210, the second pressing assembly 112 can also exert a pressing effect on the first electrode 210 through the diaphragm 300, ensuring that the diaphragm 300 and the first electrode 210 will not shift or deform. At this time, through the cooperation of the extraction assembly and the lifting assembly, the first pressing assembly 111 can be driven to move away from the first electrode 210, and then the first pressing assembly 111 no longer presses the first electrode 210, which is beneficial for preparing for pressing the next electrode 200.

[0080] S500, the second electrode 220 is stacked in the electrode loading position, and the first pressing knife assembly 111 is driven to approach and press against the second electrode 220 based on the extraction assembly and the lifting assembly.

[0081] It is understandable that, such as Figures 5 to 6As shown, the second electrode 220 is stacked on the electrode loading position, so that the second electrode 220 covers the top of the first electrode 210. The extraction component drives the first pressing component 111 to move closer to the second electrode 220, and at the same time drives the lifting component to drive the first pressing component 111 to descend and press against the second electrode 220, so that the second electrode 220 can be fixed, avoiding displacement of the second electrode 220, and ensuring mutual contact between the first electrode 210, the diaphragm 300 and the second electrode 220.

[0082] The first electrode 210 and the second electrode 220 have opposite polarities, that is, one of the first electrode 210 and the second electrode 220 is a positive electrode 200 and the other is a negative electrode 200.

[0083] S600, the diaphragm feeding device moves relative to the electrode loading position to drive the diaphragm 300 to cover the second electrode 220.

[0084] It is understandable that, such as Figures 5 to 6 As shown, the diaphragm feeding device moves relative to the electrode loading position to drive the diaphragm 300 to cover the second electrode 220. At this time, the first pressing knife assembly 111 can fix the covered diaphragm 300 and the first electrode 210 by pressing the diaphragm 300 covering the first electrode 210. At the same time, the second pressing knife assembly 112 can ensure the installation accuracy of the second electrode 220 relative to the first electrode 210 by pressing the second electrode 220, thereby achieving the accuracy of the film coating on the second electrode 220.

[0085] Thus, through the above steps, and through the cooperation of the first pressing assembly 111 and the second pressing assembly 112, during the process of the separator 300 covering the first electrode 210 and the second electrode 220 to achieve "Z"-shaped stacking, at least one of the first pressing assembly 111 and the second pressing assembly 112 will press the separator 300 or the electrode 200 at all times. This ensures the stability of the cell structure during the stacking process and avoids the risk of unevenness such as wrinkles in the separator 300, thereby improving the quality of the stacked cells.

[0086] Furthermore, in some stacking scenarios, multiple electrodes need to be stacked. Specifically, the electrodes are stacked in a cyclical manner, such as first electrode 210, separator 300, second electrode 220, separator 300, first electrode 210, separator 300, second electrode 220 and separator 300..., to achieve a "Z"-shaped coating stacking arrangement of multiple electrodes.

[0087] It should be noted that the number of pressing blades in the first pressing blade assembly 111 and the second pressing blade assembly 112 can be one or more. Furthermore, when the number of pressing blades in the first pressing blade assembly 111 is multiple, the multiple pressing blades in the first pressing blade assembly 111 can execute the same movement path to keep pressing the same layer of electrode 200 at all times, or they can execute different movement paths to achieve the ability to press different layers of electrode 200.

[0088] Similarly, when there are multiple pressure knives in the second pressure knife assembly 112, the multiple pressure knives in the second pressure knife assembly 112 can execute the same movement path to keep pressing the same layer of diaphragm 300 at all times, or they can execute different movement paths to achieve the ability to press different layers of diaphragm 300.

[0089] In some embodiments, such as Figures 2 to 7 As shown, the first pressing assembly 111 includes at least two electrode pressing blades 1111, which are sequentially spaced apart along the width direction Y of the electrode 200. The electrode pressing blades 1111 are used to abut against and press the electrode 200. The second pressing assembly 112 includes at least two diaphragm pressing blades 1121. The at least two diaphragm pressing blades 1121 are sequentially spaced apart along the width direction Y of the electrode 200. The diaphragm pressing blades 1121 are used to press the electrode 200 by pressing the diaphragm 300 covering the electrode 200.

[0090] The movement path of the electrode pressing knife 1111 can be either fixed on the same electrode 200 during the process, or it can be transferred from being fixed on one electrode 200 to being fixed on another electrode 200. At the same time, the movement path of the diaphragm pressing knife 1121 can be either fixed on the same membrane layer during the process, or it can be transferred from being fixed on one membrane layer to being fixed on another membrane layer.

[0091] Specifically, in an example use case, such as Figures 2 to 7 As shown, assuming there is a first electrode 210 and a second electrode 220, with the second electrode 220 superimposed on the first electrode 210.

[0092] During unidirectional coating of the first electrode 210, at least one electrode pressing blade 1111 is configured to press against the first electrode 210, and other electrode pressing blades 1111 are configured to press against the electrode 200 below the first electrode 210. At least one diaphragm pressing blade 1121 is configured to transfer from pressing against the film layer covering the electrode 200 below the first electrode 210 to pressing against the film layer disposed on the surface covering the first electrode 210, and other diaphragm pressing blades 1121 are configured to press against the film layer covering the electrode 200 below the first electrode 210 and between the first electrode 210 (i.e., pressing against the uppermost electrode 200 and the lower electrode 200 adjacent to the uppermost electrode 200).

[0093] During the process of pressing the second electrode 220 unidirectional diaphragm 300, at least one diaphragm pressing blade 1121 is configured to transfer the film layer between the electrode 200 and the first electrode 210 below the first electrode 210 to press the film layer disposed on the surface of the second electrode 220. At least one electrode pressing blade 1111 is configured to transfer from the electrode 200 pressed below the first electrode 210 to press the upper surface of the second electrode 220, and other electrode pressing blades 1111 are configured to keep pressing the upper surface of the first electrode 210.

[0094] In this way, it is ensured that the separator 300 and the electrode 200 are pressed firmly throughout the entire process of coating the first electrode 210 and the second electrode 220, guaranteeing the accurate alignment of the separator 300 and the electrode 200. This also prevents the separator 300 from shaking or shifting due to uneven tension or speed fluctuations during the coating process, ensuring that the separator 300 is flat and adhered to the surface of the electrode 200. Simultaneously, the remaining separator pressing blades 1121 continuously press the film layer covering the surface of the first electrode 210, and the remaining electrode pressing blades 1111 continuously press the first electrode 210, maintaining the stability of the stacked discharge core structure.

[0095] Based on the above embodiments of the diaphragm pressing knife 1121 and the electrode pressing knife 1111, the following provides a detailed description of an example operation process for the multi-station tableting method.

[0096] like Figures 2 to 7 As shown, at least two diaphragm pressing blades 1121 include a first diaphragm pressing blade 1121a and a second diaphragm pressing blade 1121b arranged sequentially at intervals along a first direction. At least two electrode pressing blades 1111 include a first electrode pressing blade 1111a and a second electrode pressing blade 1111b arranged sequentially at intervals along a first direction. The first direction is the direction of movement of the diaphragm 300 relative to the first electrode 210 during coating. Assuming the diaphragm 300 moves to the right, and the right direction is the first direction, then the blade arranged on the left is the first diaphragm pressing blade 1121a, and the blade arranged on the right is the second diaphragm pressing blade 1121b.

[0097] In an example scenario, such as Figures 2 to 3 As shown, step S100 above includes:

[0098] S101, the first electrode pressing knife 1111a presses the first electrode 210, and the second electrode pressing knife 1111b presses the electrode 200 below the first electrode 210. The diaphragm 300 covering the electrode 200 below the first electrode 210 is pressed by the first diaphragm pressing knife 1121a and the second diaphragm pressing knife 1121b.

[0099] In this step, see back Figures 2 to 3When the diaphragm 300 does not cover the first electrode 210, the first electrode pressing blade 1111a is configured to press the first electrode 210 to achieve the positioning function of the first electrode 210. Subsequently, the second electrode pressing blade 1111b is configured to press the adjacent electrode 200 disposed below the first electrode 210 to achieve the positioning function of the electrode 200 below the first electrode 210.

[0100] Furthermore, both the first diaphragm pressing blade 1121a and the second diaphragm pressing blade 1121b are configured to press and cover the membrane layer set on the lower electrode 200 to achieve the positioning effect of the membrane layer. Thus, through the setting of the second pressing blade assembly 112 and the first pressing blade assembly 111, the cell is fixed, preventing the electrode 200 from shifting or the diaphragm 300 from loosening due to tension changes during the stacking process.

[0101] S102, the lifting component drives the first diaphragm pressing knife 1121a to rise along the thickness direction, and the extraction component drives the first diaphragm pressing knife 1121a to be extracted away from the first electrode 210, so that the first diaphragm pressing knife 1121a is spaced apart from the electrode loading position.

[0102] Understandably, in combination Figure 4 and Figure 5 As shown, when the diaphragm 300 moves in the first direction to cover the top electrode 200, the first diaphragm pressing blade 1121a needs to be driven to rise by the lifting assembly so that the first diaphragm pressing blade 1121a does not contact the diaphragm 300. At this time, it is convenient to drive the first diaphragm pressing blade 1121a to move away from the electrode loading position by the extraction assembly so that the first diaphragm pressing blade 1121a no longer presses against the diaphragm 300 that is set below the first electrode 210.

[0103] In another example scenario, step S300 above includes:

[0104] S301, the lifting assembly drives the first diaphragm pressing knife 1121a to above the first electrode 210, and the first diaphragm pressing knife 1121a is driven to reset towards the electrode loading position based on the extraction assembly, and then the lifting assembly drives the first diaphragm pressing knife 1121a to press down to press the diaphragm 300 covering the first electrode 210.

[0105] That is, combining Figure 6 and Figure 7 As shown, after the first diaphragm pressing knife 1121a is raised to a certain height by the lifting assembly, the first diaphragm pressing knife 1121a is moved to above the first electrode 210 by the extraction assembly, and then lowered by the lifting assembly so that the first diaphragm pressing knife 1121a presses the diaphragm 300 covering the first electrode 210, so as to position and fix the diaphragm 300 covering the uppermost electrode 200.

[0106] Thus, in this process, the first electrode pressing blade 1111a maintains the pressing and positioning of the first electrode 210, while the second electrode pressing blade 1111b presses and positions the electrode 200 below the first electrode 210. The first diaphragm pressing blade 1121a first presses the film layer covering the electrode 200 below the first electrode 210 until the uppermost electrode 200 is covered by the diaphragm 300. At this point, the cell structure is relatively stable, and the pressing can then switch to pressing the film layer on the first electrode 210. This ensures the coverage and fixation of the film layer on each electrode 200 layer, preventing displacement of the diaphragm 300 or interlayer misalignment caused by sudden tension changes or equipment movements during the stacking process, thus ensuring the consistency and stability of the cell structure.

[0107] In another example scenario, such as Figures 4 to 7 As shown, step S400 above includes:

[0108] S401, the lifting assembly drives the second electrode pressing knife 1111b to rise, and the extraction assembly drives the second pressing knife assembly 112 to move away from the electrode loading position, so that the second electrode pressing knife 1111b is spaced apart from the electrode loading position.

[0109] S402, the lifting assembly drives the second electrode pressing blade 1111b to rise above the first electrode 210, and the extraction assembly drives the second electrode pressing blade 1111b to reset in the direction closer to the electrode loading position, so that the second electrode pressing blade 1111b can be positioned above the electrode loading position in the vertical direction Z.

[0110] In other example scenarios, step S500 above includes:

[0111] S501, the second electrode 220 is stacked at the electrode loading position.

[0112] S502, the lifting assembly drives the second electrode pressing knife 1111b to descend, so that the second electrode pressing knife 1111b approaches and presses against the second electrode 220.

[0113] Thus, in this process, combined with the embodiment of the first electrode pressing knife 1111a described above, the first electrode pressing knife 1111a still maintains a tight fit with the first electrode 210 during the coating process of the second electrode 220. In combination with the tight fit of the second electrode pressing knife 1111b with the second electrode 220, the tightness between the second electrode 220 and the first electrode 210 is achieved, ensuring the alignment accuracy of the stacked discharge core structure and avoiding displacement of the electrode 200 during the coating process.

[0114] In one example, the first direction is set parallel to the width direction Y of the electrode 200. This ensures that the diaphragm 300 covers the electrode 200, improving the coating effect.

[0115] In conjunction with the above embodiment of the long side edge 201, see back Figures 2 to 7 The first diaphragm pressing blade 1121a and the second diaphragm pressing blade 1121b are respectively pressed and engaged with the two long side edges 201 of the battery cell that are arranged opposite each other in the width direction Y. In this way, at least two diaphragm pressing blades 1121 can press and engage with the long side edges 201, which helps to reduce the size of the diaphragm pressing blades 1121 and the driving length, reduce the driving difficulty and the processing difficulty, and at the same time, can press and engage the edges that are prone to warping and deformation, thereby improving the fixation effect of the electrode sheet 200.

[0116] Furthermore, the symmetry and force balance of the first diaphragm pressing knife 1121a and the second diaphragm pressing knife 1121b when pressing and fixing the electrode 200 are improved, effectively reducing the risk of electrode 200 twisting or film layer displacement caused by uneven force on both sides, and further improving the stacking accuracy and stability.

[0117] In one embodiment, the number of first diaphragm pressing blades 1121a is set to at least two. These at least two first diaphragm pressing blades 1121a are arranged sequentially and at intervals along the length direction X, and the at least two first diaphragm pressing blades 1121a are pressed against the long side edge 201 on the same side. This provides multiple fixed pressing points for the diaphragm 300 on the same side, thereby improving the pressing effect on the diaphragm 300.

[0118] In another embodiment, the number of second diaphragm pressing blades 1121b is set to at least two, and the at least two second diaphragm pressing blades 1121b are arranged sequentially and at intervals along the length direction X, and the at least two second diaphragm pressing blades 1121b are pressed and engaged with the long side edge 201 on the same side. Similarly, this arrangement can provide multiple fixed pressing points for the diaphragm 300 on the same side, thereby improving the pressing effect on the diaphragm 300.

[0119] In conjunction with the above embodiment of the wide side edge 202, see back Figures 2 to 7 The first electrode pressing blade 1111a and the second electrode pressing blade 1111b are respectively arranged opposite each other along the width direction Y of the cell, and at least one first electrode pressing blade 1111a and at least one second pressing blade are pressed against the same wide side edge 202. In this way, by pressing at least one first electrode pressing blade 1111a and at least one second pressing blade against the same wide side edge 202, at least two electrode pressing blades 1111 can press against the same wide side edge 202, which helps to reduce the setting size and driving length of the electrode pressing blades 1111, reduce the driving difficulty and processing difficulty, and at the same time, it can press against the positions where the edges are prone to warping and deformation, thus improving the fixing effect of the electrode 200.

[0120] In one embodiment, two first electrode pressing blades 1111a are respectively pressed against the same wide side edge 202 disposed opposite to each other in the length direction X of the electrode 200. In this way, the pressing action of at least two first electrode pressing blades 1111a on the opposite wide side edge 202 enhances the fixing strength and stability of the wide side edge 202 of the electrode 200, and at the same time, effectively suppresses the warping or slippage of the electrode 200 caused by uneven force on one side during high-speed stacking.

[0121] In another embodiment, two second electrode pressing blades 1111b are respectively pressed against the same wide side edge 202 disposed opposite to each other in the length direction X of the electrode 200. Thus, the pressing action of at least two second electrode pressing blades 1111b on the oppositely disposed wide side edge 202 enhances the fixing strength and stability of the wide side edge 202 of the electrode 200, and effectively suppresses warping or slippage of the electrode 200 caused by uneven force on one side during high-speed stacking.

[0122] Some embodiments, such as Figures 2 to 5 As shown, step S400 above includes:

[0123] S410, the lifting assembly drives the first pressing knife assembly 111 to raise the first preset height so that the first pressing knife assembly 111 and the first electrode 210 are separated, and the first pressing knife assembly 111 is rotated to the first preset angle by the extraction assembly to extract the electrode loading position.

[0124] It is understandable that by raising the first pressure knife assembly 111 to a first preset height through the lifting assembly, a gap is created between the first pressure knife assembly 111 and the first electrode 210. This ensures that when the extraction assembly rotates to a first preset angle to extract the first pressure knife assembly 111, the first electrode 210 will not interfere with the extraction of the first pressure knife assembly 111, thus avoiding frictional obstruction of the extraction process when they come into contact. At the same time, it also prevents the first pressure knife assembly 111 from causing frictional damage to the first electrode 210 during the extraction process.

[0125] S420, the first pressure knife assembly 111, rotated to the first preset angle, is raised to the second preset height by the lifting assembly.

[0126] Understandably, see you later. Figures 2 to 5 The lifting component drives the first pressing component 111 to raise to a second preset height, so that the height of the plane where the first pressing component 111 is located is greater than the height of the plane where the upper surface of the first electrode 210 is located, so that the first pressing component 111 will not be at the position of the first electrode 210, thus avoiding the first pressing component 111 from scratching the first electrode 210.

[0127] S430: Based on the extraction component, the first pressing component 111 is rotated to the second preset angle, and the first pressing component 111 is driven to rise to the third preset height by the lifting component to move away from the first electrode 210.

[0128] See you later Figures 2 to 5 It is understandable that by using the extraction component to rotate the first pressing component 111 to the second preset angle, the first pressing component 111 is positioned above the first electrode 210. Then, by using the lifting component to drive the first pressing component 111 to a third preset height, it can move away from the first electrode 210. During this process, rotating the first pressing component 111 to the second preset angle by the extraction component reduces the rotation angle required for the first pressing component 111 to press the second electrode 220, thus improving the corresponding speed.

[0129] In other embodiments, step S500 above includes:

[0130] S510, the extraction component drives the first pressure component 111 to rotate from the second preset angle to above the second electrode 220.

[0131] In conjunction with the above step S400, the first pressing component 111 is positioned at a second preset angle to be far away from the first electrode 210. After the second electrode 220 is placed, the first pressing component 111 can be rotated from the second preset angle to be above the second electrode 220, which ensures the subsequent pressing and alignment effect of the first pressing component 111 on the second electrode 220, and ensures the pressing area, thereby improving the fixing stability of the second electrode 220.

[0132] S520, the lifting assembly lowers the first pressing knife assembly 111 from the third preset height to the second preset height or the first preset height, so that the first pressing knife assembly 111 is lowered to press against the second electrode 220.

[0133] Understandably, when the lifting assembly drives the first pressing blade assembly 111 to lower from the third preset height to the second preset height or the first preset height, the first pressing blade assembly 111 can press against the second electrode 220, thereby positioning the second electrode 220 on the first electrode 210. Furthermore, because the first electrode 210 and the second electrode 220 are relatively thin, when the lifting assembly lowers to the second preset height or the first preset height, it will not exert excessive clamping force on the second electrode 220, thus avoiding damage to the second electrode 220.

[0134] In one example, the second preset height is the height distance between the upper surface of the first electrode 210 (i.e., the surface of the first electrode 210 facing the second electrode 220) and the upper surface of the second electrode 220 (i.e., the surface of the second electrode 220 facing away from the first electrode 210). In another example, the second preset height is the height distance between the upper surface of the first electrode 210 and the lower surface of the second electrode 220. In other examples, the second preset height is the height distance between the upper surface of the first electrode 210 and a plane slightly lower than the upper surface of the second electrode 220.

[0135] In one embodiment, the lifting assembly lowers the first pressing assembly 111 from a third preset height to a second preset height. This lowering ensures effective pressing of the second electrode 220 while preventing excessive pressing force, thus avoiding deformation of the second electrode 220 and improving the stacking stability of the second electrode 220, thereby increasing the yield rate of the pressing assembly.

[0136] In other embodiments, step S200 above includes:

[0137] S210, the diaphragm feeding device moves relative to the electrode 200 to cover the first electrode 210 with the diaphragm 300 in a state parallel to the first electrode 210.

[0138] In this way, the diaphragm feeding device drives the diaphragm 300 to move in a direction parallel to the first electrode 210, which ensures that the diaphragm 300 and the first electrode 210 are in contact, avoids wrinkles and bends, and improves the stacking quality of the battery cell.

[0139] In another embodiment, step S600 above includes:

[0140] S610, the diaphragm feeding device is loaded and moved relative to the electrode 200 to cover the second electrode 220 with the diaphragm 300 in a state parallel to the second electrode 220.

[0141] Similarly, the diaphragm feeding device drives the diaphragm 300 to move in a direction parallel to the second electrode 220, which ensures that the diaphragm 300 and the second electrode 220 are in contact, avoiding wrinkles and bends, and improving the stacking quality of the battery cell.

[0142] It should be noted that the number of lifting components and extraction components can be one or more, and there are no major restrictions here.

[0143] In one embodiment, there are multiple lifting components. The multiple lifting components are respectively connected to the first pressing knife component 111 and the second pressing knife component 112 to drive the multiple first pressing knife components 111 to move closer to or away from the electrode 200 and / or the diaphragm 300, and to drive the multiple second pressing knife components 112 to move closer to or away from the electrode 200 and / or the diaphragm 300.

[0144] There are multiple extraction components. The multiple extraction components are respectively connected to the first pressing knife assembly 111 and the second pressing knife assembly 112 to drive the multiple first pressing knife assemblies 111 to move closer to or away from the electrode 200 and / or the diaphragm 300, and to drive the multiple second pressing knife assemblies 112 to move closer to or away from the electrode 200 and / or the diaphragm 300.

[0145] This facilitates independent and precise control of the lifting assembly and multiple first pressing blade assemblies 111 and multiple second pressing blade assemblies 112, as well as independent and precise control of the extraction assembly and multiple first pressing blade assemblies 111 and multiple second pressing blade assemblies 112. This improves control accuracy and allows for different drive controls on different first pressing blade assemblies 111 and second pressing blade assemblies 112. This enables the first pressing blade assemblies 111 and second pressing blade assemblies 112 to be used for pressing different parts and to switch between different pressing parts, thereby improving the control accuracy of the fixing device 100.

[0146] In any embodiment of the diaphragm feeding device described above, the diaphragm feeding device includes a reciprocating drive assembly and a swing roller assembly 400, the swing roller assembly 400 being disposed on the support assembly and used for winding and / or clamping the diaphragm 300.

[0147] The reciprocating drive assembly is used to drive the swing roller assembly 400 to reciprocate relative to the fixed device 100, so that the swing roller assembly 400 drives the diaphragm 300 to cover the electrode 200 of the fixed device 100.

[0148] Understandably, when the oscillating roller assembly 400 drives the diaphragm 300 to move along the first direction, the diaphragm 300 can cover the first electrode 210. When the oscillating roller assembly 400 drives the diaphragm 300 to move along the second direction, the diaphragm 300 can cover the second electrode 220. The first and second directions are set in opposite directions. This means that as long as the oscillating roller assembly 400 swings back and forth in the first and second directions, the film exit direction and position of the diaphragm 300 are reversed. This allows the stacking equipment 10 to start the next row of film laying immediately from the opposite direction without cutting the diaphragm 300, forming a continuous Z-shaped film path. This improves material utilization and production efficiency, reduces the time for interruption and re-film laying, and achieves continuous stacking.

[0149] Furthermore, throughout the entire continuous stacking process, the diaphragm 300 is always wound or held by the same swing roller assembly 400, which avoids sudden tension changes in the diaphragm 300 caused by transfer or changes in the clamping point, maintains the stability of the tension distribution of the diaphragm 300, and thus effectively prevents the diaphragm 300 from wrinkling and stretching damage, thereby improving the manufacturing quality of the battery cell.

[0150] Furthermore, in one embodiment, such as Figure 3 as well as Figure 7 As shown, the oscillating roller assembly 400 includes a plurality of diaphragm oscillating rollers 410. The plurality of diaphragm oscillating rollers 410 are aligned vertically in the Z direction, and a gap is provided between the diaphragm oscillating rollers 410. A diaphragm 300 is wound around the diaphragm oscillating rollers 410 and passes through the gap to guide the diaphragm 300 to flatly cover the electrode 200 and to collect excess diaphragm 300. The vertical Z direction is aligned with the thickness direction of the electrode 200.

[0151] To facilitate understanding, the following explanation will focus on the process of the oscillating roller assembly 400 driving the diaphragm 300 to reciprocate.

[0152] The oscillating roller assembly 400 clamps the diaphragm 300 through the gaps, causing the diaphragm 300 to move in the first direction, so that the diaphragm 300 can cover the first electrode 210. After completing one row of film laying, the oscillating roller assembly 400 rotates 180° in place, which can cause the roll-out end of the diaphragm 300 (i.e., the diaphragm 300 used to cover the uppermost electrode 200) to change direction. For example, the roll-out end of the diaphragm 300, which was originally located on the left side of the oscillating roller assembly 400, will move to the right side of the cell.

[0153] Since each reversal involves a 180° rotation, the path length and geometry of the diaphragm 300 from the feed to the swing roller assembly 400 are completely symmetrical in both the left and right movement directions. Without any lateral movement back to the starting point, the next row of film can be laid immediately from right to left (i.e., the diaphragm 300 is moved in the second direction to cover the second electrode 220 setting), avoiding unnecessary travel waste of the swing roller assembly 400 and improving the stacking efficiency.

[0154] In one implementation, such as Figure 3 as well as Figure 7 As shown, two diaphragm rollers 410 are configured, with the diaphragm 300 clamped between them. When the reciprocating drive assembly drives the diaphragm 300 to reciprocate relative to the battery cell, the diaphragm 300 drives the first and second rollers to rotate. The rotation drive assembly is connected between the first and second rollers. Thus, the clamping of the diaphragm 300 is achieved through the arrangement of the first and second rollers, resulting in a simple structure that is easy to install and helps reduce costs.

[0155] In another embodiment, the oscillating roller assembly 400 further includes a rotation drive assembly. Two adjacent diaphragm oscillating rollers 410 form an oscillating roller group 401, and the oscillating roller assembly 400 has at least one oscillating roller group 401. The rotation drive assembly is used to drive all oscillating roller groups 401 to rotate in the vertical plane, so that the two diaphragm oscillating rollers 410 in the oscillating roller group 401 can be flipped relative to each other in the vertical direction Z (i.e., the two diaphragm oscillating rollers 410 are flipped 180° in the vertical plane), so that the oscillating roller assembly 400 drives the diaphragm 300 to change the direction of covering the electrode 200.

[0156] Thus, by driving the rotation of the oscillating roller group 401 through the rotation drive assembly, the accuracy of controlling the flipping angle of the two diaphragm oscillating rollers 410 in the diaphragm 300 group is improved, thereby enabling the diaphragm 300 to cover the direction of the electrode 200 and keep it parallel during the reciprocating process, which in turn helps to improve the adhesion between the diaphragm 300 and the electrode 200 and ensures the quality of the pressed and stacked sheets.

[0157] Furthermore, when driving the rotation drive assembly, it is only necessary to switch the two diaphragm rollers 410 in the roller group 401 between two fixed points (0° and 180°), which helps to simplify the control program, thereby reducing costs and facilitating maintenance.

[0158] Optionally, in conjunction with the above embodiments of the electrode pressing knife 1111 and the diaphragm pressing knife 1121, in one embodiment, the multiple lifting components include multiple first lifting components and multiple second lifting components. Each first lifting component is driven to each electrode pressing knife 1111 to drive the electrode pressing knife 1111 to move up and down along the thickness direction of the electrode 200. Each second lifting component is driven to each diaphragm pressing knife 1121 to drive the diaphragm pressing knife 1121 to move up and down along the thickness direction of the electrode 200. This improves the accuracy of the lifting component control and avoids the drive lag problem that occurs when one lifting component drives multiple pressing knives.

[0159] In a further embodiment of the electrode pressing knife 1111 and diaphragm pressing knife 1121 described above, the plurality of extraction components include a plurality of first extraction components and a plurality of second extraction components. Each first extraction component is driven in a one-to-one transmission relationship with each electrode pressing knife 1111 to drive the electrode pressing knife 1111 to move on a reference plane in a direction away from or near the electrode 200. Each second extraction component is driven in a one-to-one transmission relationship with each diaphragm pressing knife 1121 to drive the diaphragm pressing knife 1121 to move on a reference plane in a direction away from or near the electrode 200. The reference plane is intersecting the thickness direction.

[0160] This helps improve the accuracy of the extraction component control and avoids the drive lag problem that occurs when one extraction component drives multiple pressure knives.

[0161] In one embodiment, the first extraction component includes a first drive source and a telescopic member. The first drive source is connected to the telescopic member for driving its linear telescopic movement. The telescopic member is driven to engage with the first electrode pressing blade 1111a to extend or retract in a direction approaching or away from the electrode 200. The engagement structure between the first drive source and the telescopic member can be either a cylinder and piston structure or a motor and lead screw structure, selected according to the actual working conditions.

[0162] In another embodiment, the second extraction component includes a second drive source and a rotating shaft. The second drive source is driven by the diaphragm pressing knife 1121, enabling the diaphragm pressing knife 1121 to rotate relative to the battery cell. This structure is relatively simple, easy to install, and helps reduce costs. The second drive source can be, but is not limited to, a motor or a hydraulic cylinder.

[0163] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A fixing device, characterized in that, The fixing device includes: Multiple pressure knife assemblies are used to abut and press the electrode sheet and / or diaphragm; A lifting assembly is connected to the pressing knife assembly for driving the pressing knife assembly to perform lifting motion, so that the pressing knife assembly moves closer to or away from the electrode and / or the diaphragm; The extraction component is connected to the pressing knife component for driving the pressing knife component to move closer to or away from the electrode and / or the diaphragm.

2. The fixing device according to claim 1, characterized in that, The fixing device further includes an electrode loading position for loading the electrode; The pressing assembly includes multiple first pressing assemblies and multiple second pressing assemblies, wherein the first pressing assemblies are spaced apart around the electrode loading position along the transmission direction of the electrode sheet; and, The second pressing knife assembly is arranged at intervals on the end side of the electrode loading position along a direction perpendicular to the transmission direction.

3. The fixing device according to claim 2, characterized in that, The lifting components are multiple, and the multiple lifting components are respectively connected to the first pressing knife component and the second pressing knife component to drive the multiple first pressing knife components to move closer to or away from the electrode and / or the diaphragm, and drive the multiple second pressing knife components to move closer to or away from the electrode and / or the diaphragm. The extraction components are multiple, and the multiple extraction components are respectively connected to the first pressing knife component and the second pressing knife component to drive the multiple first pressing knife components to move closer to or away from the electrode and / or the diaphragm, and to drive the multiple second pressing knife components to move closer to or away from the electrode and / or the diaphragm.

4. A stacking device, characterized in that, Includes a support assembly, a diaphragm feeding device, and a fixing device as described in any one of claims 1 to 3; The fixing device is assembled onto the support assembly; The diaphragm feeding device is rotatably mounted on the support assembly and is arranged adjacent to the diaphragm feeding device. The diaphragm feeding device reciprocates relative to the electrode loading position to provide a diaphragm to the fixing device.

5. The stacking equipment according to claim 4, characterized in that, The diaphragm feeding device includes a reciprocating drive assembly and a swing roller assembly. The swing roller assembly is disposed on the support assembly and is used to wind and / or clamp the diaphragm. The reciprocating drive assembly is used to drive the swing roller assembly to reciprocate relative to the fixed device, so that the swing roller assembly drives the diaphragm to cover the electrode of the fixed device.

6. The stacking equipment according to claim 5, characterized in that, The oscillating roller assembly includes multiple diaphragm oscillating rollers, which are aligned vertically and have gaps between them. The diaphragm is wound around the diaphragm oscillating rollers and passes through the gaps to guide the diaphragm to flatly cover the electrode and recycle excess diaphragm.

7. A multi-station tableting method, characterized in that, Using the stacking apparatus according to any one of claims 4 to 6, the fixing device includes an electrode loading position for loading the electrode; the pressing assembly includes a plurality of first pressing assemblies and a plurality of second pressing assemblies; The multi-station tableting method includes: The first pressing component presses against the first electrode at the electrode loading position, and the second pressing component moves away from the electrode loading position based on the lifting component and the extraction component. The diaphragm feeding device moves relative to the electrode loading position to drive the diaphragm to cover the first electrode. The second pressing knife assembly, based on the lifting assembly and combined with the extraction assembly, approaches and presses against the diaphragm covering the first electrode. Based on the extraction component and the lifting component, the first pressing knife component is driven to move away from the first electrode plate; The second electrode is stacked toward the electrode loading position, and the first pressing knife assembly is driven to approach and press against the second electrode based on the extraction component and the lifting component. The diaphragm feeding device moves relative to the electrode loading position to drive the diaphragm to cover the second electrode. The first electrode and the second electrode have opposite polarities.

8. The multi-station tableting method according to claim 7, characterized in that, The step of driving the first pressure knife assembly to move away from the first electrode plate based on the extraction component and the lifting component includes: The lifting component raises the first pressing knife component to a first preset height to create a gap between the first pressing knife component and the first electrode, and the extraction component rotates the first pressing knife component to a first preset angle to extract the electrode loading position. The first pressure knife assembly, rotated to the first preset angle, is lifted to the second preset height by the lifting assembly; Based on the extraction component, the first pressing component is rotated to a second preset angle, and based on the lifting component, the first pressing component is raised to a third preset height to move away from the first electrode.

9. The multi-station tableting method according to claim 8, characterized in that, The method of driving the first pressing knife assembly to approach and press against the second electrode plate based on the extraction component and the lifting component includes: The extraction component drives the first pressing component to rotate from the second preset angle to above the second electrode plate; The lifting assembly lowers the first pressing knife assembly from the third preset height to the second preset height or the first preset height, so that the first pressing knife assembly is lowered to press against the second electrode.

10. The multi-station tableting method according to claim 7, characterized in that, The diaphragm feeding device moves relative to the electrode loading position to drive the diaphragm to cover the first electrode, including: The diaphragm feeding device moves relative to the electrode to cover the first electrode in a parallel state with the first electrode; And / or, the diaphragm feeding device moves relative to the electrode loading position to cause the diaphragm to cover the second electrode, including: The diaphragm feeding device moves relative to the electrode to cover the second electrode with the diaphragm in a parallel position to the second electrode.

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