A split type ink adding assembly for cell piece edge covering and production equipment

Abstract

A split-type ink filling assembly and production equipment for edge-wrapping of solar cells are disclosed. This assembly is used for non-mechanical contact edge-wrapping of horizontally placed solar cells, including horizontally aligned ink filling plates. Ink flow channels are constructed on the inner side of the ink filling plates, and the channel paths are adapted to the peripheral structure of the solar cell. Ink outlet grooves are constructed near both the front and back sides of the channel. The opposing ink filling plates are controlled to move towards the center of the solar cell until they make top-to-top contact, with the ink outlet grooves surrounding the periphery of the solar cell. Due to its surface tension, the ink directly contacts the periphery of the solar cell through the ink outlet grooves and completely covers the four sides and chamfers of the solar cell along the channels, forming an edge-wrapping layer around the edge of the solar cell. This application can simultaneously perform non-contact edge-wrapping of the four edges and four chamfers of a horizontal solar cell, ensuring ink coverage of the solar cell edges and reducing the risk of breakage. The edge-wrapping coverage range can be flexibly adjusted by adjusting the distance between the ink outlet grooves and the solar cell.

Description

Technical Field

[0001] This application belongs to the field of photovoltaic cell manufacturing technology, and in particular relates to a split ink-filling module and production equipment for cell edge wrapping. Background Technology

[0002] In the manufacturing process of photovoltaic cells, electroplating can cause plating around the edges of silicon wafers, affecting cell performance. Existing edge-wrapping technologies are mostly dispensing or roller coating. Conventional methods involve using a scraper or roller to distribute the edge wrapping on the four sides and chamfers of the silicon wafer. However, scrapers or rollers are prone to causing cell breakage, resulting in a high fragmentation rate. Moreover, the edge-wrapping quality is unstable and the edge-wrapping efficiency is low. The overall structure is not only complex, but the main components also have a high wear rate. Summary of the Invention

[0003] This application provides a split ink filling component and production equipment for edge banding of battery cells, which solves the technical problems of unstable quality, low efficiency and high production cost caused by the existing edge banding operation which can only be carried out in a distributed manner.

[0004] To solve at least one of the above-mentioned technical problems, the technical solution adopted in this application is:

[0005] A split-type ink filling assembly for edge banding of battery cells, used for non-mechanical contact edge banding of horizontally placed battery cells, including an ink filling plate configured in a horizontal alignment.

[0006] A channel for ink flow is constructed on the inner side of the ink-filling plate, and the path of the channel is adapted to the peripheral structure of the battery cell.

[0007] The channel is equipped with ink outlet grooves on both the front and back sides of the battery cell.

[0008] The ink plates, which are positioned opposite each other, are moved toward the center of the battery cell until they make contact with each other. The ink outlet groove is placed around the periphery of the battery cell. Due to its surface tension characteristics, the ink directly contacts the periphery of the battery cell through the ink outlet groove and completely covers the four sides and chamfers of the battery cell along the channel, forming an edge-wrapping layer that surrounds the edge of the battery cell.

[0009] Furthermore, the ink outlet groove is not in contact with the battery cell, and the vertical distance between the ink outlet groove and the surface of the battery cell is 0.01mm-5mm.

[0010] Furthermore, the width of the ink outlet groove is in the range of 0.3mm-10mm, and the depth is in the range of 0.3mm-10mm.

[0011] Furthermore, the opening surface of the ink outlet groove is constructed as a flat surface or an inclined surface; the angle between the inclined surface and the surface of the battery cell is an acute angle.

[0012] Furthermore, during edge binding, the ink outlet groove is located either 0.05mm-100mm inward from the edge of the battery cell or 0.05mm-100mm outward from the edge of the battery cell.

[0013] Furthermore, the ink plates on both sides are in contact with each other at their top along their separating surfaces, and a hollow structure is constructed in the middle to avoid the vacuum platform used to place the battery cells.

[0014] Furthermore, the intersection of the separating surface and the battery cell is located on the four sides or chamfered corners of the battery cell; the ink injection point on the ink outlet groove is positioned at the middle of its edge and / or at a corner.

[0015] Furthermore, the positions of the upper and lower ink outlet grooves in the ink filling plate can be vertically aligned or staggered.

[0016] Furthermore, an overflow groove is also constructed on the lower side of the channel, and the overflow groove is located on the side of the lower ink outlet groove away from the battery cell.

[0017] Preferably, a baffle is provided between the overflow groove and the ink outlet groove. The baffle is arranged along the flow direction of the channel and is constructed as a continuous annular baffle or an intermittent annular baffle.

[0018] Preferably, the height of the baffle is no more than half the height of the channel.

[0019] A production equipment equipped with a split-type ink filling component as described above.

[0020] This application discloses a split-type ink supply assembly for edge banding of solar cells. Through the coordinated operation of the split ink outlet components and based on the surface tension of the ink, it can simultaneously perform non-contact edge banding of the four edges and four chamfers of a horizontal solar cell, ensuring that the ink covers the edges of the cell and reducing the risk of breakage. The edge banding coverage can be flexibly adjusted by changing the distance between the ink outlet and the solar cell. This application also proposes a production device equipped with this split-type ink supply assembly. Attached Figure Description

[0021] Figure 1 This is a perspective view of a split-type ink filling component for edge banding of a battery cell according to this application;

[0022] Figure 2 This is a perspective view of the single-sided ink-filling plate in this application;

[0023] Figure 3 This is a top view of another type of split ink plate in this application;

[0024] Figure 4 This is a top view of another type of split ink plate in this application;

[0025] Figure 5 This is a top view of another type of split ink plate in this application;

[0026] Figure 6 This is a schematic cross-sectional view of the edge-sealing layer in this application;

[0027] Figure 7 This is a schematic diagram of a channel cross-section in this application;

[0028] Figure 8 This is a schematic diagram of the cross-section of the channel with an overflow groove added in this application;

[0029] Figure 9 This is a schematic diagram of the cross-section of the channel in this application, which has both an overflow groove and a baffle.

[0030] Figure 10 This is a schematic diagram of the cross-section of the channel with the ink outlet grooves arranged vertically and vertically in this application;

[0031] Figure 11 This is a schematic diagram of the cross-section of the channel in this application, where the opening surface of the ink outlet groove is an inclined plane;

[0032] Figure 12 This is a schematic diagram of the cross-section of the channel in this application, where the opening surface of the ink outlet groove is a plane and an inclined plane;

[0033] Figure 13 This is a schematic diagram of the ink forming a spherical shape at the groove opening in this application.

[0034] In the picture:

[0035] 10. Ink filling assembly; 11. Ink filling plate; 12. Channel

[0036] 13. Upper ink outlet trough 14. Lower ink outlet trough 15. Overflow trough

[0037] 16. Vacuum platform; 17. Edge-sealing layer; 18. Ink injection point.

[0038] 19. Baffle strip; 20. Battery cell Detailed Implementation

[0039] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0040] This embodiment proposes a split ink filling assembly 10 for edge wrapping of battery cells, such as... Figure 1As shown, it is used for non-mechanical contact edge wrapping on the periphery of a horizontally placed battery sheet 20, and comprises a vacuum platform 16 for horizontally adsorbing the battery sheet 20 and an ink feeding plate 11 which is arranged in horizontal alignment for edge wrapping the battery sheet; the ink feeding plate 11 is of a split structure and is located on the left and right sides of the battery sheet 20, and the oppositely contacted ink feeding plates 11 can form a complete ink feeding component matching the outer shape of the battery sheet 20. In order to avoid the vacuum platform 16 for supporting the placement of the battery sheet, an up-down hollow structure needs to be arranged at the center of the aligned ink feeding plate 11, so that the oppositely contacted ink feeding plates 11 are combined to form a structure similar to a "square" shape.

[0041] As Figure 2 shown, a channel 12 for ink flow is formed on the inner side of the ink feeding plate 11, the cross section of the channel 12 is configured as a C-shaped structure, the surface where the opening is located horizontally faces one side of the battery sheet, and the path of the channel 12 is adapted to the peripheral structure of the battery sheet 20. Ink outlet grooves are formed on the sides of the channel 12 close to the front and back sides of the battery sheet, which are respectively an upper ink outlet groove 13 located on the upper top surface of the channel 12 and a lower ink outlet groove 14 located on the lower bottom surface thereof. The ink feeding plates 11 arranged opposite to each other on the left and right are controlled to move toward the center side of the battery sheet (the moving direction is as shown in Figure 2 the two-way arrow), until the ink feeding plates contact oppositely, and the ink outlet grooves surround the periphery of the battery sheet; under the action of the surface tension property of ink, the ink flows out from the ink outlet grooves to form a spherical shape, so that only the ink can directly contact the periphery of the battery sheet through the ink outlet grooves, and after flowing along the channel 12, it can completely cover the four sides and chamfers of the battery sheet, forming an edge wrapping layer 17 circularly wrapped on the edge of the battery sheet.

[0042] In this embodiment, a transplanting mechanism for controlling the left and right ink feeding plates to move toward or away from each other is also provided. Since it is a conventional displacement tool in the art and is not the focus of the invention in the present application, the accompanying drawings of these common transplanting mechanisms are omitted and no example is given.

[0043] In addition, the battery sheet provided in this embodiment can be a square structure or a rectangular structure; accordingly, the ink feeding assembly 10 can be as shown in Figure 5 , it can also be a rectangular structure as shown in Figure 3-4 . No matter what structure the battery sheet is, it has four sides. The battery sheet can have chamfers or no chamfers; but whether there are chamfers or not, the split ink feeding assembly proposed in the present application can be used for edge wrapping operation.

[0044] As Figure 6 shown, the three-dimensional edge wrapping layer 17 covers four sides and chamfers of the battery sheet, and is specifically divided into vertical edge wrapping sections and horizontal edge wrapping sections on the front side and / or back side of the battery sheet 20, wherein the widths of the horizontal edge wrapping sections on the front side and the back side of the battery sheet 20 can be the same or different.

[0045] The ink filling plate 11 is made of molecular materials, metallic materials, or composite materials that are resistant to high temperatures up to 100°C and chemical corrosion; and the ink filling plate 11 is an integrally connected structure. The opening of the upper ink outlet trough 13 is set downwards, and the opening of the lower ink outlet trough 14 is set upwards, and the upper ink outlet trough 13 and the lower ink outlet trough 14 can be arranged vertically correspondingly or vertically offset.

[0046] The edge-sealing ink filling assembly proposed in this application consists of ink filling plates that are separately arranged on the left and right sides relative to the horizontal battery cell. All ink outlet slots are non-contact with the battery cell. Preferably, the vertical distance H2 between the ink outlet slot and the surface of the battery cell is at least 0.01mm-5mm. Figure 7 As shown, the two ink-filling plates 11 are in contact with each other at their respective top edges, and ink injection points 18 are provided on the ink outlet groove. The ink injection points 18 are connected to the ink outlet groove through the ink supply pipe, allowing ink to be injected into the ink outlet groove. By controlling the edge-wrapping method through this split ink-filling assembly, and utilizing the surface tension characteristics of the ink, non-contact edge-wrapping of the four sides and chamfers of the battery cell can be performed simultaneously, thereby achieving non-contact edge-wrapping operation between the ink-filling assembly and the battery cell. This edge-wrapping method eliminates the need for rotating or performing step-by-step operations on the battery cell after edge-wrapping on one or both sides, and also eliminates the need for a separate edge-wrapping procedure for the chamfers, significantly improving efficiency. It not only reduces the risk of cell breakage, but also eliminates the need for material replacement due to friction wear and tear caused by mechanical contact, such as doctor blades and rollers, thus reducing production costs.

[0047] The vacuum platform 16 is a commonly used vacuum table in this field, with both its length and width smaller than the solar cell. If it is too small, the solar cell 20 may break or be punctured when the ink plate is pressed down. Because the ink exerts a certain suction or pressure on the solar cell 20, if the solar cell is too far from the vacuum platform, stress will occur at the ink around the periphery of the solar cell due to the lever principle, which may cause the solar cell to crack or be punctured. If it is too large, the edge of the vacuum platform 16 will be close to the edge of the solar cell, making it prone to sticking. Preferably, the vacuum platform 16 is 50-70% of the area of ​​the solar cell for optimal matching. The vacuum platform is used to fix the solar cell, preventing displacement or vibration during the edge-wrapping process and ensuring edge-wrapping accuracy.

[0048] like Figure 3-5 As shown, these are all top views of the two ink plates 11 in contact with the top surface along their separating surfaces. From these figures, it can be seen that the intersection of the separating surfaces with the solar cell is located on the four sides of the solar cell. Figure 3-4 As shown; it can also be located at the chamfered position of the solar cell, such as... Figure 5 As shown. Specifically, as Figure 3As shown, the dividing surface and the conveying direction of the battery sheet 20 (the direction indicated by the single arrow in the figure) can be arranged in a crossing manner or in parallel. That is, the dividing surface can be arranged along the conveying direction; in this case, the dividing surface is the center line of the battery sheet, and the dividing surface can also be located at a position deviated to the left or right from the center line, but it is always arranged in parallel with the conveying direction. As Figure 4 shown, the dividing surface is arranged to cross the conveying direction, and the size of the crossing angle is not limited and can be determined based on actual conditions. As Figure 5 shown, the dividing surface can be arranged on the alignment chamfer of the battery sheet.

[0049] Preferably, the ink injection point 18 on the ink outlet groove is configured at the middle position of the edge and / or the corner position of the ink outlet groove. An ink delivery pipe injects ink into the ink outlet groove, and the ink flows along the perimeter of the battery sheet along the channel of the ink outlet groove. When the ink forms a spherical shape at the groove opening, it contacts the battery sheet and covers the edge of the battery sheet. Based on the fluidity and adhesive force of the ink, the ink can completely cover the side vertical surfaces and horizontal surfaces of the perimeter of the battery sheet, forming a three-dimensional encapsulating layer 17.

[0050] After the ink adding plates 11 on both sides are in abutting contact, they form an integral ink adding assembly 10, and a hollow structure is provided at the center position of the integral ink adding assembly to avoid the vacuum platform. After the abutting contact, the ink adding assembly 10 forms a structure similar to a "mouth" shape; only in this way can the integrated edge encapsulation operation be performed completely on the four sides and chamfers of the battery sheet at one time.

[0051] Preferably, all ink outlet grooves can be either continuous groove structures or uniformly spaced and discontinuous groove structures. That is, the ink outlet groove can be a continuous and through groove structure; it can also be a groove structure with equally long grooves arranged at intervals. In this case, although the grooves are arranged discontinuously, they are still connected to each other. For the discontinuously arranged grooves, the ink can still flow along the through direction of the grooves. No matter how the groove structure of the ink outlet groove is designed, the structure enclosed by the ink outlet groove must be adapted to the perimeter structure of the battery sheet. By optimizing the arrangement of the openings of the ink outlet grooves and the fluidity of the ink, the edges and chamfers can be uniformly covered, so as to ensure that the ink completely encapsulates the edges and chamfers of the battery sheet in a three-dimensional edge encapsulation manner, and avoid the problem of plating wrapping during electroplating.

[0052] As Figure 7 shown, the positions of the upper and lower ink outlet grooves in the ink adding plate 11 are vertically corresponding, that is, the positions of the upper ink outlet groove 13 and the lower ink outlet groove 14 relative to the channel 12 are the same. As Figure 10As shown, the upper ink outlet groove 13 and the lower ink outlet groove 14 are staggered vertically. In this structure, the upper ink outlet groove 13 and the lower ink outlet groove 14 on both sides of the ink-filling plate 11 are in the same position; otherwise, the ink in the top contact area cannot flow between them. By adjusting the position of the upper and lower ink outlet grooves relative to the edge of the battery cell, the width W4 of the horizontal section of the edge-sealing layer can be adjusted; by adjusting the vertical height of the ink outlet grooves from the surface of the battery cell, the thickness H2 of the horizontal section of the edge-sealing layer can be flexibly adjusted.

[0053] Preferably, the width W1 of the ink outlet groove cross-section is 0.3mm-10mm, and the groove depth H1 is 0.3mm-10mm; the vertical distance H2 between the groove opening and the surface of the battery cell is 0.01mm-5mm. There is a certain gap between the channel 12 and the outer edge of the battery cell end. Due to the surface tension of the ink, the ink droplets formed through the ink outlet groove are spherical, such as... Figure 13 As shown; and once it comes into contact with and covers the battery cell, the edge-wrapping process is complete.

[0054] While ensuring the vertical height H2 from the groove opening to the cell surface, the horizontal relative position between the ink groove opening and the cell edge can be adjusted as needed, thereby flexibly adjusting the edging width, i.e., adjusting the width of the horizontal section of the edging layer. During edging, the ink groove opening is located either recessed inward by 0.05mm-100mm from the cell edge or extended outward by 0.05mm-100mm from the cell edge, thus flexibly controlling the edging coverage range of single-sided or double-sided cell edge wrapping by 0.05mm-100mm to meet the edging layer 17 of different process requirements.

[0055] like Figure 11 As shown, the upper and lower slots are staggered. Since the lower horizontal section of the edge-sealing layer 17 requires a larger width, the slot of the lower ink outlet needs to be adjusted to be located inside the battery cell. Preferably, the slot is located at the edge of the battery cell, recessed inwards towards the center by W2 of 0.05mm-100mm. Since the upper horizontal section of the edge-sealing layer 17 requires a narrower width, the slot of the upper ink outlet needs to be adjusted to be located outside the battery cell, i.e., the slot is located at the edge of the battery cell, extended outwards by W3 of 0.05mm-100mm. The horizontal position of the slot relative to the edge of the battery cell is pre-set and machined, not adjusted temporarily.

[0056] Regarding the horizontal relative position of the ink outlet slots to the edge of the solar cell, when the slots of both the upper and lower ink outlet slots are located within the solar cell and are equidistant, the following can be obtained: Figure 8-10 The shown edge-sealing layer 17 structure has a horizontal edge section with the same width at both the top and bottom. When the openings of the upper and lower ink outlet grooves are both within the battery cell, but their distances are not equal, an edge-sealing layer with different widths at the top and bottom can be obtained, such as... Figure 11As shown. Both methods can achieve the required edge covering layer for different coverage sizes on both sides of the battery cell.

[0057] By controlling the horizontal relative position of the ink outlet and the battery cell, and by controlling the ink coverage of the battery cell edge through surface tension, this non-contact edge-sealing ink filling component can not only avoid mechanical contact with the battery cell and reduce the risk of breakage, but also ensure edge-sealing quality and improve edge-sealing efficiency.

[0058] When only a single horizontal edge banding section is needed, because the battery cell is thin and the ink has good fluidity, ink is injected only from the ink outlet groove on the side where the horizontal edge banding section is required, and no ink is injected into the ink outlet groove on the side where the horizontal edge banding section is not located. The ink can cover the horizontal surface on one side and completely cover the side surface of the edge of the battery cell, thereby obtaining the desired edge banding layer 17 structure.

[0059] Preferably, such as Figure 9 As shown, to prevent excessive ink in the channel 12, an overflow groove 15 is constructed on the lower side of the channel 12. The overflow groove 15 is located on the side of the lower ink outlet groove away from the battery cell to improve the fluidity of the ink. The overflow groove 15 can be a continuous groove arranged around the ink outlet groove, or it can be a hole groove structure arranged at uniform intervals, for the purpose of overflowing excess ink.

[0060] Preferably, such as Figure 10 As shown, a baffle 19 is also provided between the overflow groove 15 and the ink outlet groove, and the height of the baffle 19 is no more than half the height of the channel 12. The baffle 19 is arranged along the flow direction of the channel 12 and is constructed as a continuous annular baffle or an intermittent annular baffle arranged at equal intervals. The purpose is to prevent excess ink from accumulating at the lower ink outlet groove 13 and affecting the edge coating effect of the ink in the lower ink outlet groove.

[0061] like Figure 7-9 As shown, the opening surface of the ink outlet groove is constructed as a flat surface, meaning that the ink outlet groove and the horizontal plane of the solar cell are at a perpendicular angle. Channel 12, the ink outlet groove and the edge of the solar cell form an open edge-sealing compartment. After the ink droplets above come into contact with the periphery of the solar cell, they flow down along the side surface of the solar cell and gradually merge with the ink droplets below. The direction of ink flow is shown by the arrow in the figure, thereby completely wrapping the edge of the solar cell and forming a three-dimensional edge-sealing layer 17.

[0062] like Figure 10-11 As shown, the opening surfaces of both the upper and lower ink outlet grooves are constructed as inclined surfaces, which are positioned obliquely upwards or downwards relative to the side surface of the solar cell, and the angle θ between the inclined surface and the surface of the solar cell is an acute angle. This inclined surface structure is more conducive to the ink flowing towards the edge of the solar cell, quickly covering the four sides and chamfered positions of the solar cell, forming a three-dimensional edge-sealing layer 17. The width of the horizontal section of the edge-sealing layer can be adjusted by adjusting the inclination angle of the opening surfaces of the upper and lower ink outlet grooves.

[0063] like Figure 12 As shown, the upper ink outlet groove has a flat opening and the lower ink outlet groove has a sloping opening. After the upper ink droplet contacts the periphery of the battery cell, it flows down along the side surface of the battery cell and merges with the lower ink droplet. Then it flows out with the lower sloping surface, thereby achieving the edge wrapping operation of the battery cell and forming a three-dimensional edge wrapping layer 17.

[0064] Although the ink-filling plate 11 in this application is a closed, integrated structure, it can also be designed as a movable structure in which the surfaces of the upper and lower ink outlet grooves are pivotally connected to the side surfaces of the ink-filling plate. Alternatively, the width of the horizontal section of the edging layer can be adjusted by changing the inclination angle of the opening surfaces of the upper and lower ink outlet grooves. This type of movable ink-filling plate structure can be adjusted based on actual conditions, but all are within the scope of protection of this application. The attached drawings are omitted.

[0065] During edge banding, the left and right ink plates 11 are controlled to move towards each other and be placed close to the periphery of the upper and lower surfaces of the battery cell, so that the left and right channels 12 and the battery cell form an edge banding chamber; ink is injected into the upper ink outlet 13 and the lower ink outlet 14 respectively, so that the ink directly contacts the side vertical surface and the upper and lower horizontal surface of the edge of the battery cell 20 until it completely covers the periphery of the battery cell, forming the edge banding layer 17.

[0066] A production equipment equipped with a split-type ink filling component as described above.

[0067] The separate ink supply component for edge banding of a battery cell designed in this application can simultaneously perform non-contact edge banding on the four edges and four chamfers of a horizontal battery cell through the coordinated operation of the separate ink outlet components and based on the surface tension of the ink. This allows the ink to cover the edges of the battery cell, reducing the risk of breakage. The edge banding coverage range can be flexibly adjusted by adjusting the distance between the ink outlet and the battery cell.

[0068] This embodiment simplifies the mechanism design, eliminating existing easily damaged parts such as rollers and scrapers, and adopts a more optimized and reasonable ink filling assembly composed of a split ink filling plate. At the same time, by adjusting the distance between the ink outlet and the battery cell, the width of the horizontal edge section can be flexibly controlled to meet the size coverage requirements of single-sided, double-sided, or different edge horizontal sections of the battery cell, so as to adapt to a wider edge coverage range; it can also reduce maintenance costs and improve equipment reliability; and it uses fewer parts that are less prone to wear and tear.

[0069] The embodiments of this application have been described in detail above. These descriptions are merely preferred embodiments and should not be construed as limiting the scope of this application. All equivalent variations and modifications made within the scope of this application should still fall within the patent coverage of this application.

Claims

1. A split-type ink filling assembly for edge wrapping of battery cells, characterized in that, Used for non-mechanical contact edge binding of horizontally placed solar cells, including a horizontally aligned ink plate; A channel for ink flow is constructed on the inner side of the ink-filling plate, and the path of the channel is adapted to the peripheral structure of the battery cell. The channel is equipped with ink outlet grooves on both the front and back sides of the battery cell. The ink plates, which are positioned opposite each other, are moved toward the center of the battery cell until they make contact with each other. The ink outlet groove is placed around the periphery of the battery cell. Due to its surface tension characteristics, the ink directly contacts the periphery of the battery cell through the ink outlet groove and completely covers the four sides and chamfers of the battery cell along the channel, forming an edge-wrapping layer that surrounds the edge of the battery cell.

2. The split-type ink filling assembly for edge wrapping of battery cells according to claim 1, characterized in that, The ink outlet groove is not in contact with the battery cell, and the vertical distance between the ink outlet groove and the surface of the battery cell is 0.01mm-5mm.

3. A split-type ink filling assembly for edge wrapping of battery cells according to claim 1 or 2, characterized in that, The width of the ink outlet groove is in the range of 0.3mm-10mm; the depth is in the range of 0.3mm-10mm.

4. A split-type ink filling assembly for edge wrapping of battery cells according to claim 3, characterized in that, The opening surface of the ink outlet groove is constructed as a flat surface or an inclined surface; the angle between the inclined surface and the surface of the battery cell is an acute angle.

5. A split-type ink filling assembly for edge wrapping of battery cells according to claim 4, characterized in that, When binding the edge, the position of the ink outlet groove is either 0.05mm-100mm inward from the edge of the battery cell or 0.05mm-100mm outward from the edge of the battery cell.

6. A split-type ink filling assembly for edge banding of battery cells according to any one of claims 1-2 and 4-5, characterized in that, The ink plates on both sides are in contact with each other at the top along their separating surfaces, and a hollow structure is constructed in the middle to avoid the vacuum platform used to place the battery cells.

7. A split-type ink filling assembly for edge wrapping of battery cells according to claim 6, characterized in that, The intersection of the separating surface and the battery cell is located on the four sides or chamfered corners of the battery cell; the ink injection point on the ink outlet groove is positioned at the middle of its edge and / or at a corner.

8. A split-type ink filling assembly for edge banding of battery cells according to any one of claims 1-2, 4-5, and 7, characterized in that, The positions of the upper and lower ink outlet grooves in the ink-filling plate can be vertically aligned or staggered.

9. A split-type ink filling assembly for edge wrapping of battery cells according to claim 8, characterized in that, An overflow groove is also constructed on the lower side of the channel, and the overflow groove is located on the side of the lower ink outlet groove away from the battery cell.

10. A split-type ink filling assembly for edge banding of battery cells according to claim 9, characterized in that, A baffle is also provided between the overflow groove and the ink outlet groove. The baffle is arranged along the flow direction of the channel and is constructed as a continuous annular baffle or an intermittent annular baffle.

11. A split-type ink filling assembly for edge wrapping of battery cells according to claim 10, characterized in that, The height of the baffle is no more than half the height of the channel.

12. A production apparatus equipped with a split-type ink filling component as described in any one of claims 1-11.

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