Flexible module battery cell waste edge removal, crack shaping, and distance expansion coating production method and system

Abstract

The present invention discloses a production method and system for removing waste edges, splitting, shaping, expanding and coating of flexible component battery cells. The production method sequentially undergoes a fully automatic waste edge removal process, a primary splitting process, a secondary splitting process, a shaping, expanding and coating process to split large-sized battery cells into hundreds of small-sized battery cells, and completes the shaping, expanding and coating operations, ultimately achieving the arrangement and expansion of battery cells. The present invention can achieve the key process of splitting complete large-sized battery cells, and through two expansion operations, hundreds of battery cells can be arranged at equal intervals. Compared with the traditional manual arrangement method, the production efficiency can be significantly improved by dozens of times, thereby realizing the automated production of flexible battery cells. This production method has significant advantages, including improving production efficiency, reducing costs, improving product quality and achieving a high degree of automation.

Description

Technical Field

[0001] The present invention belongs to the technical field of flexible batteries, and in particular relates to a method and system for producing a flexible component battery cell by removing waste edges, cracks, shaping, and extending the distance of the film. Background Art

[0002] In traditional solar cell production, the mainstream cell sizes currently include 156x156mm, 166x166mm, and 182x182mm. However, to achieve cell flexibility and rollability, these standard-sized cells must be cut into hundreds of smaller cells and arranged horizontally and vertically at a specific spacing. This design creates gaps between the cells, enabling rollability.

[0003] Currently, the arrangement of these small-cell batteries relies primarily on manual labor: first, large cells are manually broken into smaller cells, and then arranged one by one using a jig. However, this production method has many drawbacks, including low production efficiency, high costs, and a low degree of automation.

[0004] It should be noted that this part of the present invention only provides background technology related to the present invention and does not necessarily constitute prior art or public known technology. Summary of the Invention

[0005] The purpose of the present invention is to overcome the problem that the arrangement and expansion of battery cells in the prior art still relies on manual operation, with low production efficiency, high cost and low degree of automation. The present invention provides a production method and system for removing waste edges, splitting, shaping, expanding and coating of flexible component battery cells. The production method completes the splitting of large battery cells into hundreds of small battery cells and performs shaping, expanding and coating actions through a fully automatic waste edge removal process, a primary splitting process, a secondary splitting process, and a shaping, expanding and coating process to complete the arrangement and expansion of battery cells. This method can realize the processes of splitting and expanding the distance of complete large battery cells, and can achieve two horizontal and vertical expansions to arrange hundreds of battery cells at equal intervals. Compared with manual arrangement, the efficiency can be improved by dozens of times, thereby realizing the automated production of flexible battery cells. This production method has the advantages of improving production efficiency, reducing costs and increasing efficiency, improving product quality, and a high degree of automation.

[0006] To achieve the above objectives, in a first aspect, the present invention provides a method for producing a flexible module cell film for removing scrap edge cracks, shaping, and extending the distance. The cell comprises a protective layer, an adhesive, and a silicon wafer stacked in sequence. The protective layer and the silicon wafer are both provided with scratches aligned with each other, and the edge of the protective layer is also provided with scrap edge cracks. The production method comprises the following steps:

[0007] S100, breaking the edge of the protective layer along the scrap edge crack to remove the scrap edge;

[0008] S200, breaking the protective layer and the silicon wafer along their respective scratches to split the solar cell into a plurality of small solar cells connected to each other by adhesive;

[0009] S300, breaking the adhesive between the gaps between the plurality of small battery cells;

[0010] S400 , extending the distances between the plurality of small battery cells so that the plurality of small battery cells are evenly spaced, and then simultaneously pasting protective films on the protective layers of the plurality of small battery cells.

[0011] Preferably, S100 specifically includes the following steps:

[0012] S101, breaking two opposite edges of the protective layer along the waste edge cracks to partially remove the waste edge;

[0013] S102, breaking the other two opposite edges of the protective layer along the waste edge cracks to completely remove the waste edges.

[0014] Preferably, the scrap edge cracks include two first scrap edge cracks and two second scrap edge cracks, the two first scrap edge cracks are respectively arranged at two opposite edges of the protective layer, and the two second scrap edge cracks are respectively arranged at the other two opposite edges of the protective layer.

[0015] Preferably, S101 specifically includes the following steps:

[0016] Simultaneously, two opposite edges of the protective layer are broken along their respective first waste edge cracks to partially remove the waste edges;

[0017] Preferably, S102 specifically includes the following steps:

[0018] At the same time, the other two opposite edges of the protective layer are broken along their respective second waste edge cracks to completely remove the waste edges.

[0019] Preferably, S200 specifically includes the following steps:

[0020] S201, breaking the protective layer and the silicon wafer along the scratches in a first direction to split the solar cell into multiple strips connected by adhesive;

[0021] S202, breaking the protective layer and the silicon wafer along the scratches in the second direction to split the plurality of battery cells into a plurality of small battery cells connected to each other by adhesive;

[0022] The first direction and the second direction are perpendicular to each other.

[0023] Preferably, the ratio of the depth of the scratch on the protective layer to its thickness is in the range of 1 / 3-3 / 4, and the maximum width of the scratch on the protective layer is in the range of 10 μm-80 μm;

[0024] Preferably, the ratio of the depth of the scratch on the silicon wafer to its thickness is in the range of 1 / 3-2 / 3, and the maximum width of the scratch on the silicon wafer is in the range of 10 μm-50 μm;

[0025] Preferably, the hardness of the adhesive is in the range of 35-60 Shore A.

[0026] Preferably, the scratches include a plurality of first scratches and a plurality of second scratches, the plurality of first scratches are arranged in parallel and at equal intervals along the first direction, and the plurality of second scratches are arranged in parallel and at equal intervals along the second direction.

[0027] Preferably, S201 specifically includes the following steps:

[0028] Step by step, the protective layer and the silicon wafer are broken in sequence along a plurality of first scratches in a first direction so as to split the solar cell into a plurality of strips connected by adhesive;

[0029] Preferably, S202 specifically includes the following steps:

[0030] The protective layer and the silicon wafer are sequentially broken along a plurality of second scratches in a step-by-step manner from the second direction so as to split the plurality of battery cells into a plurality of small battery cells connected to each other by adhesive.

[0031] Preferably, S300 specifically includes the following steps:

[0032] S301, breaking the adhesive between the gaps of the plurality of small battery cells from a first direction;

[0033] S302, completely breaking the adhesive between the gaps of the plurality of small battery cells from the second direction;

[0034] The first direction and the second direction are perpendicular to each other.

[0035] Preferably, a plurality of parallel first gaps are provided between the plurality of battery cells and the small battery cells along a first direction of the battery cells, and a plurality of parallel second gaps are provided between the plurality of battery cells and the small battery cells along a second direction of the battery cells, and the first gaps between the battery cells and the second gaps between the battery cells are perpendicular to each other;

[0036] S301 specifically includes the following steps:

[0037] Sequentially breaking the adhesive strips in the first gaps of the plurality of battery cells in a step-by-step manner from a first direction;

[0038] S302 specifically includes the following steps:

[0039] The adhesive strips in the second gaps of the plurality of battery cells are sequentially broken step by step from the second direction.

[0040] Preferably, S400 specifically includes the following steps:

[0041] S401, gathering the plurality of small battery cells together to eliminate gaps between the plurality of small battery cells;

[0042] S402, expanding the plurality of small battery cells at equal intervals along a first direction;

[0043] S403, expanding the plurality of small battery cells at equal intervals along a second direction;

[0044] S404, simultaneously attaching a protective film to the protective layers of the plurality of small battery cells after the distance expansion;

[0045] The first direction and the second direction are perpendicular to each other.

[0046] Preferably, S401 specifically includes the following steps:

[0047] Multiple small battery cells are placed in the limiting gap, and the multiple small battery cells are gathered from all directions toward the middle of the limiting gap to eliminate the gaps between the multiple small battery cells; wherein the thickness of the limiting gap is greater than the thickness of the small battery cell and less than 2 times the thickness of the small battery cell.

[0048] In the second aspect, the present invention provides a flexible component battery cell waste edge removal, cracking, shaping and expanding coating production system, the battery cell includes a protective layer, an adhesive and a silicon wafer stacked in sequence, the protective layer and the silicon wafer are provided with scratches aligned with each other, and the edge of the protective layer is also provided with waste edge cracks, the production system includes a waste edge removal device, a primary cracking device, a secondary cracking device and a shaping and expanding coating device arranged in sequence; the waste edge removal device is used to break the edge of the protective layer along the waste edge crack to remove the waste edge; the primary cracking device is used to break the protective layer and the silicon wafer along their respective scratches to split the battery cell into multiple small battery cells connected to each other by adhesive; the secondary cracking device is used to break the adhesive between the gaps of the multiple small battery cells; the shaping and expanding coating device is used to expand the multiple small battery cells so that the multiple small battery cells are evenly spaced, and then the protective film is simultaneously pasted on the protective layer of the multiple small battery cells.

[0049] Preferably, the scrap edge removal device, the primary splitting device, the secondary splitting device and the shaping, expanding and coating device are arranged in a ring shape, and the battery cells pass through the scrap edge removal device, the primary splitting device, the secondary splitting device and the shaping, expanding and coating device in sequence;

[0050] Preferably, the feeding direction and the discharging direction of the waste edge removal device are located in the same direction of the same straight line; the feeding direction and the discharging direction of the primary splitting device are set at 90°; the feeding direction and the discharging direction of the secondary splitting device are set at 90°, and the discharging direction of the secondary splitting device is opposite to the feeding direction of the primary splitting device; the discharging direction of the shaping and expanding laminating device is opposite to the feeding direction.

[0051] Preferably, the waste edge removal device comprises:

[0052] A first scrap edge removal module, the first scrap edge removal module is used to break two opposite edges of the protective layer along the scrap edge cracks to partially remove the scrap edges;

[0053] The second scrap edge removing module is used to break the other two opposite edges of the protective layer along the scrap edge cracks to completely remove the scrap edges.

[0054] Preferably, the primary splitting device comprises:

[0055] A first splitting module, the first splitting module is used to break the protective layer and the silicon wafer along the scratch from a first direction to split the solar cell into multiple strips connected by adhesive;

[0056] The second splitting module is used to break the protective layer and the silicon wafer along the scratches from a second direction so as to split the plurality of solar cells into a plurality of small solar cells connected to each other by adhesive.

[0057] Preferably, the secondary splitting device comprises:

[0058] A third splitting module, the third splitting module is used to break the adhesive between the gaps of the plurality of small battery cells from the first direction;

[0059] A fourth splitting module, the fourth splitting module is used to completely break the adhesive between the gaps of the plurality of small battery cells from the second direction;

[0060] The first direction and the second direction are perpendicular to each other.

[0061] Preferably, the shaping and distance-expanding laminating device comprises:

[0062] A shaping module is used to gather multiple small battery cells together to eliminate the gaps between the multiple small battery cells;

[0063] A first distance expansion module, which is used to expand the distances of multiple small battery cells at equal intervals from a first direction;

[0064] A second distance expansion module, which is used to expand the distances of the multiple small battery cells at equal intervals from a second direction;

[0065] The film pasting module is used to simultaneously paste protective films on the protective layers of multiple small battery cells after the distance expansion;

[0066] The first direction and the second direction are perpendicular to each other.

[0067] The beneficial effects of the present invention are:

[0068] Research has found that the current arrangement of small-particle battery cells is mainly achieved by manually breaking large battery cells into small battery cells, and then arranging them one by one using a jig. This production method has problems such as low production efficiency, high cost, and low degree of automation. In addition, the splitting process in the existing technology adopts a one-time splitting process. There are two specific points for improvement. First, the large battery cell is completely split into small battery cells at one time. The splitting process requires greater pressure, which can easily crush the battery cell and cause defects. Second, splitting the battery cell into small pieces at one time is inconvenient for the subsequent process of the battery cell. Based on this, further research has been conducted and the present invention is proposed.

[0069] The present invention adopts the above-mentioned technical scheme, especially the production method of flexible component battery cell scrap removal, cracking, shaping and expanding film, which includes breaking the edge of the protective layer along the scrap crack to remove the scrap edge; breaking the protective layer and the silicon wafer along their respective scratches to split the battery cell into multiple small battery cells connected to each other by adhesive; breaking the adhesive between the gaps of the multiple small battery cells; expanding the multiple small battery cells so that the multiple small battery cells are evenly spaced, and then simultaneously affixing a protective film to the protective layer of the multiple small battery cells. The production method completes the scrap removal process, the first cracking process, the second cracking process, the shaping and expanding filming process, and the battery cell arrangement and expansion production. The method can realize the cracking and expanding processes of the complete large battery cell, and can achieve the arrangement of hundreds of battery cells with equal spacing by expanding the distance twice horizontally and vertically. Compared with manual arrangement, the efficiency can be improved by dozens of times, thereby realizing the automated production of flexible battery cells. This production method has the advantages of improving production efficiency, reducing costs and increasing efficiency, improving product quality, and a high degree of automation.

[0070] Furthermore, the existing single-step splitting process requires high pressure, which can easily crack the cell and cause defects. The present invention, however, adopts a step-by-step splitting method, first splitting the large cell along the scratched portion, and then further splitting the cell into multiple smaller cells. This avoids damage to the cell caused by excessive pressure, thereby effectively improving the success rate of splitting. At the same time, by reducing the pressure and damage to the cell during the splitting process, the probability of defects such as cracks and fragments in the cell is correspondingly reduced, thereby improving the overall quality and yield rate of the cell.

[0071] Furthermore, the single-splitting process in the prior art directly splits large cell wafers into small cell wafers, which makes subsequent process flow inconvenient. However, the present invention uses single-splitting and secondary-splitting processes to make it easier for the cell wafers to be arranged, expanded, and other operations after splitting, thereby improving the efficiency and quality of subsequent processes.

[0072] The present invention also provides a production system for removing scrap edges, cracking, shaping, and expanding the spacing of flexible component battery cells, comprising a scrap edge removal device, a primary cracking device, a secondary cracking device, and a shaping and expanding coating device arranged in sequence; the scrap edge removal device is used to break the edge of the protective layer along the scrap edge crack to remove the scrap edge; the primary cracking device is used to break the protective layer and the silicon wafer along their respective scratches to split the battery cell into multiple small battery cells connected to each other by adhesive; the secondary cracking device is used to break the adhesive between the gaps between the multiple small battery cells; the shaping and expanding coating device is used to expand the multiple small battery cells so that the multiple small battery cells are evenly spaced, and then protective films are simultaneously applied to the protective layers of the multiple small battery cells. The coordinated operation of the scrap edge removal device, the primary cracking device, and the secondary cracking device of the system of the present invention can more accurately control the cracking process, avoid defects such as battery cell fracturing caused by excessive pressure in the traditional primary cracking process, and make the quality of the cracked battery cells more stable and uniform. The shaping, spacing, and laminating device can evenly arrange hundreds of small cells at equal spacing while simultaneously applying protective film. This ensures accuracy and consistency during the cell arrangement and lamination process, improving overall product quality. Compared to manual cell arrangement, this efficiency can be increased dozens of times, enabling automated production of flexible cells. This offers advantages such as increased production efficiency, cost reduction, increased efficiency, improved product quality, and a high degree of automation.

[0073] Furthermore, the arrangement and connection relationships of the various devices in the system of the present invention are cleverly and compactly arranged. In a preferred embodiment, the various devices are arranged in sequence and arranged in a ring, realizing full-process automated production from waste edge removal to shaping, expanding and laminating. Compared with the traditional manual film arrangement method, the tedious steps and time consumption of manual operation are greatly reduced, making the production process smoother and more efficient, and the production efficiency can be increased by dozens of times. The ring setting makes the connection between the various devices more compact, and the flow of materials between the various devices more rapid and smooth, reducing the time wasted due to the long distance between the devices or the unreasonable layout, and further improving the production efficiency of the entire system. The various devices are arranged in a ring, which greatly improves the integration of the entire system, relatively reduces the occupied area, and facilitates centralized management and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0074] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0075] Figure 1 A schematic diagram of the front structure of an incoming battery cell provided by an embodiment of the present invention;

[0076] Figure 2 A schematic side view of the structure of an incoming battery cell provided by an embodiment of the present invention;

[0077] Figure 3 A partially enlarged schematic diagram of the side structure of an incoming battery cell provided by an embodiment of the present invention;

[0078] Figure 4 A schematic diagram of the front structure of a battery cell after the waste edge removal process provided by an embodiment of the present invention;

[0079] Figure 5 A schematic diagram of the side structure of a battery cell after the waste edge removal process provided by an embodiment of the present invention;

[0080] Figure 6 A partially enlarged schematic diagram of the side structure of a battery cell after a single splitting process according to an embodiment of the present invention;

[0081] Figure 7 A partially enlarged schematic diagram of the side structure of a battery cell after the secondary splitting process provided by an embodiment of the present invention;

[0082] Figure 8 A schematic diagram of the front structure of a battery cell after the shaping, distance expansion and lamination process provided by an embodiment of the present invention;

[0083] Figure 9 A schematic diagram of the side structure of a battery cell after the shaping, distance expansion and lamination process provided by an embodiment of the present invention;

[0084] Figure 10 Schematic diagram of the structure of the flexible module battery cell waste edge removal, crack shaping, and distance expansion coating production system provided in an embodiment of the present invention.

[0085] Description of reference numerals:

[0086] 100, battery cell; 110, protective layer; 120, adhesive; 130, silicon wafer; 140, scratches; 150, scrap edge cracks; 160, protective film;

[0087] 210, waste edge removal device; 211, first waste edge removal module; 212, second waste edge removal module; 213, first conveying module; 214, first automatic feeding module; 215, first steering module; 216, first automatic discharging module;

[0088] 220, primary splitting device; 221, first splitting module; 222, second splitting module; 223, second conveying module; 224, second automatic feeding module; 225, second steering module; 226, pushing module; 227, transfer module;

[0089] 230, secondary splitting device; 231, third splitting module; 232, fourth splitting module; 233, third conveying module; 234, first transfer module; 235, film covering module; 236, second transfer module;

[0090] 240. Shaping, expanding and laminating device; 241. Shaping module; 242. First expanding module; 243. Second expanding module; 244. Laminating module; 245. Fourth conveying module; 246. Third transfer module. DETAILED DESCRIPTION

[0091] In the present invention, unless otherwise specified, directional words such as "up, down, left, right" are generally understood in conjunction with the directions shown in the drawings and actual applications.

[0092] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0093] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0094] The endpoints of the ranges and any values ​​disclosed herein are not limited to the precise ranges or values, and these ranges or values ​​should be understood to include values ​​close to these ranges or values. For numerical ranges, the endpoints of each range, the endpoints of each range and individual point values, and the individual point values ​​can be combined to form one or more new numerical ranges, and these numerical ranges should be considered to be specifically disclosed herein. The terms "optional" and "optional" mean that a range may or may not be included (or may or may not be present).

[0095] It should be noted that flexible cells are solar cells. During the production process of flexible solar cell modules, it is necessary to first remove the waste edges of the flexible cells, then break the flexible cells into multiple small pieces, and then adhere a predetermined number of small pieces to a flexible circuit board, with a certain gap between adjacent small pieces, to form a flexible solar cell module. In this way, when the flexible solar cell module needs to be used, the flexible circuit board is unfolded, and the multiple small pieces can be spread out flat, thereby increasing the contact area between the small pieces and sunlight, thereby realizing the photovoltaic power generation function of the flexible solar cell module and ensuring power generation efficiency. When the flexible solar cell module is not needed, the flexible circuit board is rolled up for easy storage, saving space. During this process, since there is a certain gap between adjacent small pieces, the small pieces will not interfere with the rolling of the flexible circuit board, making it easier to store the flexible solar cell module.

[0096] The flexible battery sheet involved in the embodiment of the present invention is arranged in a rectangular shape, such as Figures 1 to 3 As shown, the cell 100 includes a protective layer 110, an adhesive 120, and a silicon wafer 130, which are stacked in sequence. Both the protective layer 110 and the silicon wafer 130 are provided with aligned scratches 140 to facilitate subsequent breaking of multiple small wafers, thereby improving wafer production efficiency. The edges of the protective layer 110 are also provided with scrap edge cracks 150 to facilitate the breaking of scrap edges and improve scrap edge removal efficiency. The protective layer 110 may be made of materials such as glass or resin, which is not limited by the present invention.

[0097] Furthermore, before the cell 100 enters the splitting process, it is necessary to form aligned scratches 140 on the protective layer 110 and the silicon wafer 130 using laser or diamond scribing, and to form waste edge cracks 150 on the edge of the protective layer 110 .

[0098] Furthermore, in the current production process of flexible solar cell modules, after the silicon wafer 130 and the protective layer 110 are glued together and dried, the excess waste edges around them need to be removed. The traditional method of removing waste edges is to break them off manually. This method is inefficient, has high labor and time costs, and a low degree of automation. It is not suitable for mass production. In addition, it is difficult to ensure uniform force when breaking them manually, which can easily lead to defects such as chipped edges, cracks, and jagged edges, affecting the quality of the cell 100. The present invention realizes full-process automated production from waste edge removal to shaping and expanding the film through a fully automatic waste edge removal process. This process not only reduces dependence on manual labor and reduces labor costs, but also avoids damage to the cell 100 caused by instability in traditional manual operations by precisely controlling the waste edge removal process, significantly improving the overall quality and yield of the product.

[0099] Furthermore, splitting the battery cell 100 into multiple small pieces is an important process for realizing flexible batteries, while the splitting in the prior art adopts a one-time splitting process, and there are two specific points to be improved. First, the splitting process requires a large pressure to completely split the large battery cell 100 into small battery cells at one time, which can easily cause the battery cell 100 to be crushed and produce defects. Second, splitting the battery cell 100 into small pieces at one time is inconvenient for the subsequent process of the battery cell 100. In order to solve the technical problems existing in the one-time splitting process, the inventors of the present invention creatively invented a secondary splitting process. The first splitting process splits the protective layer 110 and the silicon wafer 130 in the three-layer structure of the battery cell 100, keeping the adhesive 120 in the middle still bonded, and the second splitting process breaks the adhesive 120 again. The use of the secondary splitting process can significantly reduce the pressure required in the splitting process, avoiding defects caused by the fracturing of the battery cell 100 due to excessive pressure. The first cleavage process separates the protective layer 110 and silicon wafer 130 in the three-layer structure of the cell 100 without breaking the adhesive 120 in the middle. This allows the cell 100 to remain adhered after cleavage. At this point, the cell 100 as a whole is in a semi-fractured state (i.e., seemingly broken but not broken), maintaining its integrity and preventing it from breaking into small particles. This facilitates the circulation of the cell 100 and provides conditions for subsequent cleavage, shaping, and lamination. The present invention has a high degree of automation, effectively increasing production capacity and improving product quality.

[0100] Furthermore, the battery cell 100 of this embodiment is arranged in a rectangular shape, and the battery cell 100 is split into hundreds of small battery cell 100 particles. It is obviously inappropriate to manually arrange small pieces of such size and quantity (it is time-consuming and labor-intensive, with high time and labor costs, not suitable for mass production, and it is easy for adjacent battery cells 100 to have different spacings, affecting the quality of the flexible solar cell). Therefore, the present invention first lays multiple battery cells 100 neatly and close to each other, and then expands the spacing of the multiple battery cells 100.

[0101] Based on the above situation, the present invention provides a method for producing a flexible module battery sheet by removing waste edges, cracks, shaping, and extending the distance, and the production method comprises the following steps:

[0102] S100, breaking the edge of the protective layer 110 along the scrap edge crack 150 to remove the scrap edge;

[0103] S200 , breaking the protective layer 110 and the silicon wafer 130 along their respective scratches 140 to split the cell 100 into a plurality of small cells connected to each other by adhesive 120 ;

[0104] S300, breaking the adhesive 120 between the gaps between the plurality of small battery cells;

[0105] S400 , extending the distances between the plurality of small battery cells so that the plurality of small battery cells are evenly spaced, and then simultaneously pasting the protective film 160 on the protective layer 110 of the plurality of small battery cells.

[0106] The production method of the present invention completes the splitting of a large cell 100 into hundreds of small cells through fully automated processes including scrap edge removal, primary splitting, secondary splitting, shaping, expanding, and laminating. This process then undergoes shaping, expanding, and laminating, completing the arrangement and expansion of the cells 100. This method can complete the splitting and expansion of a complete large cell 100, and can achieve evenly spaced arrangement of hundreds of cells 100 by simply expanding them horizontally and vertically twice. Compared to manual cell arrangement, this method can improve efficiency by dozens of times, thereby enabling automated production of flexible cells. This production method offers advantages such as increased production efficiency, cost reduction, increased efficiency, improved product quality, and a high degree of automation.

[0107] Preferably, S100 specifically includes the following steps:

[0108] S101, breaking two opposite edges of the protective layer 110 along the waste edge cracks 150 to partially remove the waste edge;

[0109] S102 , breaking the other two opposite edges of the protective layer 110 along the scrap edge cracks 150 to completely remove the scrap edges.

[0110] Specifically, the traditional way to remove waste edges is usually to break them off manually. This method is not only inefficient, but also difficult to ensure uniform force, and can easily lead to defects such as chipped edges, cracks, and jagged edges. The present invention removes waste edges in two steps. The first step is to remove part of the waste edges, and the second step is to completely remove the remaining waste edges. This step-by-step processing method can more accurately control the waste edge removal process, avoid stress concentration and edge damage caused by one-time removal, and can effectively reduce the stress on the edge of the battery cell 100. This step-by-step removal method can better protect the edge of the battery cell 100, reduce defects caused by removing waste edges, and thus improve the product yield.

[0111] Furthermore, the present invention can better adapt to automated equipment by removing waste edges in steps, and realize the mechanization and automation of waste edge removal, thereby greatly improving production efficiency and reducing labor costs.

[0112] Furthermore, the edge areas of the flexible solar cell 100 are weak points where stress is concentrated. Especially when removing the scrap edge, improper operation can easily cause cracks or cracks at the edge, thereby affecting the overall performance of the cell 100. In the present invention, each step of removing the scrap edge is performed from the opposite edge. This effectively disperses stress and avoids cracks and damage caused by excessive local stress. At the same time, this removal method can better balance the stress on both sides of the cell 100, maintaining stress balance at the edge of the cell 100, preventing cracks, and ensuring that the cell 100 maintains structural integrity and stability during subsequent processing and use.

[0113] Preferably, if Figure 1 As shown, the scrap edge cracks 150 include two first scrap edge cracks and two second scrap edge cracks. The two first scrap edge cracks are respectively provided at two opposite edges of the protective layer 110, and the two second scrap edge cracks are respectively provided at the other two opposite edges of the protective layer 110. In other words, the flexible battery sheet has four scrap edges, which are respectively provided at the four edges of the flexible battery sheet. The four scrap edge cracks together form a regular rectangle to ensure uniformity in the subsequent breaking of the small pieces.

[0114] Preferably, S101 specifically includes the following steps:

[0115] Simultaneously, two opposite edges of the protective layer 110 are broken along their respective first waste edge cracks to partially remove the waste edges;

[0116] Preferably, S102 specifically includes the following steps:

[0117] At the same time, the other two opposite edges of the protective layer 110 are broken along their respective second waste edge cracks to completely remove the waste edges.

[0118] Specifically, the present invention simultaneously removes waste edges during the step-by-step process, effectively balancing the stress on both sides of the cell 100. Traditional methods, if edges are removed one by one, can lead to uneven stress release on one side of the cell 100, causing localized deformation or cracks. By simultaneously removing both opposing edges, the present invention ensures uniform stress release, avoids structural damage caused by stress concentration, and thus maintains the overall structural stability of the cell 100.

[0119] Furthermore, processing two opposing edges simultaneously ensures uniform removal of waste. Because the operations are symmetrical, this design avoids uneven removal caused by different operation sequences, thereby ensuring the smoothness and consistency of the cell 100 edge. This is crucial for the smooth execution of subsequent processes such as wafer splitting, pitch expansion, and lamination.

[0120] Furthermore, by simultaneously removing scrap from two opposing edges, cracks and defects can be significantly reduced. This is because the symmetrical operation better controls stress distribution, avoiding edge cracks caused by localized excessive stress. This design not only improves the quality of the cell 100 but also increases the yield rate of the product.

[0121] Furthermore, processing two opposing edges simultaneously can significantly improve production efficiency. Compared to removing edges one by one, this symmetrical operation reduces the number of steps and time required. This symmetrical operation, especially in automated production, can better adapt to efficient production equipment, thereby achieving high efficiency in large-scale production.

[0122] like Figure 4 and Figure 5 As shown, after the waste edge removal process, the waste edges of the cell 100 have been removed, and the edges of the protective layer 110 and the silicon wafer 130 of the cell 100 are aligned vertically.

[0123] Preferably, S200 specifically includes the following steps:

[0124] S201, breaking the protective layer 110 and the silicon wafer 130 along the scratch 140 from a first direction to split the solar cell 100 into multiple strips connected by the adhesive 120;

[0125] S202, breaking the protective layer 110 and the silicon wafer 130 along the scratch 140 from the second direction to split the plurality of battery cells 100 into a plurality of small battery cells connected to each other by the adhesive 120;

[0126] The first direction and the second direction are perpendicular to each other.

[0127] Specifically, the single-splitting process of the present invention splits the protective layer 110 and the silicon wafer 130 in the three-layer structure of the battery cell 100 without splitting the adhesive 120 in the middle, so that the battery cell 100 after the splitting is still in an adhered state. At this time, the battery cell 100 as a whole is in a semi-broken state (i.e., seemingly broken but not broken), which can maintain the integrity of the battery cell 100 without dispersing into small particles, thereby facilitating the circulation of the battery cell 100 and providing conditions for all subsequent breaking, shaping, and extended-distance coating production.

[0128] Furthermore, the present invention employs a step-by-step fracturing process to perform a single cleavage process. Specifically, the protective layer 110 and silicon wafer 130 are fractured stepwise along scratches 140 in two mutually perpendicular directions, while maintaining the connection between the adhesive 120 and the cell 100, leaving the cell 100 in a semi-fractured state (nearly broken but not quite). This step-by-step fracturing process effectively disperses the stress generated during the cleavage process, avoiding the stress concentration caused by a complete cleavage at once. This design reduces the likelihood of defects such as cracks and fragments forming in the cell 100 during the cleavage process, thereby significantly improving the yield rate of the cell 100.

[0129] Furthermore, the present application first divides the splitting process into a primary splitting process and a secondary splitting process, and further divides the primary splitting process into two step-by-step fractures. The external force required for the splitting process is significantly reduced, reducing the risk of damage to the battery cell 100 due to excessive external force.

[0130] Furthermore, by breaking in steps, it is possible to better adapt to automated equipment and realize the mechanization and automation of splitting, thereby greatly improving production efficiency and reducing labor costs.

[0131] Preferably, the ratio of the depth of the scratch 140 on the protective layer 110 to its thickness is in the range of 1 / 3-3 / 4, and the maximum width of the scratch 140 on the protective layer 110 is in the range of 10 μm-80 μm;

[0132] Preferably, the ratio of the depth of the scratch 140 on the silicon wafer 130 to its thickness is in the range of 1 / 3-2 / 3, and the maximum width of the scratch 140 on the silicon wafer 130 is in the range of 10 μm-50 μm;

[0133] Specifically, a reasonable depth and width of the scratch 140 on the protective layer 110 can ensure the consistency of the crack, effectively form the crack and avoid it from breaking before being bonded to the silicon wafer 130, which is beneficial to subsequent bonding and splitting operations; a reasonable depth and width of the scratch 140 on the silicon wafer 130 can reduce the loss of the effective area of ​​the silicon wafer 130 and avoid breakage or splitting before bonding, which is beneficial to subsequent bonding and splitting operations while reducing the loss of battery component efficiency.

[0134] Furthermore, a reasonable depth and width of the scratch 140 can prevent the battery cell 100 from being broken due to other external forces before the battery cell 100 is split, while ensuring that the battery cell 100 can be split smoothly.

[0135] Preferably, the hardness of the adhesive 120 is in the range of 35-60 Shore A.

[0136] Preferably, the thickness of the adhesive 120 is 0.02 mm-0.1 mm, and more preferably, the thickness of the adhesive 120 is 0.05 mm-0.1 mm, but the thickness is not limited thereto and the present application does not impose any limitation thereto.

[0137] Specifically, the present invention rationally sets the hardness and thickness of the adhesive 120, achieving the following effects: First, it ensures that the adhesive 120 can adhere the protective layer 110 and the silicon wafer 130 together without falling off during the entire production process of the cell 100. Second, it ensures that the adhesive 120 between each small cell will not break during the primary cleaving process. Third, it ensures that the adhesive 120 between each small cell can be sufficiently cleaved during the secondary cleaving process.

[0138] Preferably, if Figure 1 As shown, the scratches 140 include a plurality of first scratches and a plurality of second scratches. The plurality of first scratches are arranged parallel to and evenly spaced along a first direction, and the plurality of second scratches are arranged parallel to and evenly spaced along a second direction. This allows the protective layer 110 and the silicon wafer 130 to be broken simultaneously, thereby breaking the cell 100 into a plurality of small pieces.

[0139] Preferably, S201 specifically includes the following steps:

[0140] The protective layer 110 and the silicon wafer 130 are sequentially broken along a plurality of first scratches in a step-by-step manner from a first direction so as to split the solar cell 100 into a plurality of strips connected by the adhesive 120;

[0141] Preferably, S202 specifically includes the following steps:

[0142] The protective layer 110 and the silicon wafer 130 are sequentially broken along a plurality of second scratches in a step-by-step manner from the second direction so as to split the plurality of battery cells 100 into a plurality of small battery cells connected to each other by the adhesive 120 .

[0143] Specifically, the present invention uses a step-by-step fracture method to gradually complete the cleavage of the protective layer 110 and the silicon wafer 130 in multiple steps. Each fracture only processes a small portion of the cell 100 structure, rather than completing the entire cleavage process in one go. This gradual fracture method effectively disperses the stress generated during the cleavage process, avoiding the stress concentration caused by a single fracture, thereby reducing the possibility of defects such as cracks and fragments in the cell 100 during the cleavage process.

[0144] Furthermore, the step-by-step breaking method allows for more precise control of the cell splitting process, ensuring uniform and consistent cell splitting. By breaking the cells step by step, each operation can be performed more precisely along the scratch line 140, avoiding the deviation and unevenness caused by a single break. This high-precision cell splitting method helps improve the overall quality and performance of the cell 100.

[0145] Furthermore, the use of a step-by-step breaking method can significantly reduce the external force required during the splitting process, reducing the risk of damage to the cell 100 due to excessive external force. Each break only processes a small portion of the structure, avoiding potential damage to the cell 100 caused by the large external force required for a single break, thereby improving the yield rate of the cell 100.

[0146] Furthermore, the step-by-step fracture method makes the edges of the cell 100 after cleavage more neat and the structure more complete. This design not only reduces the impact of edge damage on the performance of the cell 100, but also improves the flexibility and mechanical properties of the cell 100, thereby optimizing the photoelectric conversion efficiency and service life of the cell 100.

[0147] Furthermore, the step-by-step fracturing method is more suitable for automated production equipment. By performing the fracturing step by step, each operation can be more precisely controlled, reducing the uncontrollable factors caused by a single fracturing operation. This design is better suited to automated production lines, improving production efficiency and reducing manual intervention, thereby achieving high efficiency and stability in large-scale production.

[0148] like Figure 6 As shown, after one splitting process, the protective layer 110 and the silicon wafer 130 in the three-layer structure of the battery cell 100 have been split, but the adhesive 120 in the middle has not been split, so that the battery cell 100 after the splitting is still in an adhered state. At this time, the battery cell 100 as a whole is in a semi-broken state (i.e., seemingly broken but not broken).

[0149] Preferably, S300 specifically includes the following steps:

[0150] S301, partially breaking the adhesive 120 between the gaps of the plurality of small battery cells from a first direction;

[0151] S302, completely breaking the adhesive 120 between the gaps between the plurality of small battery cells from the second direction;

[0152] The first direction and the second direction are perpendicular to each other.

[0153] Specifically, the present invention employs a step-by-step method for breaking the adhesive 120, specifically partially breaking the adhesive 120 in a first direction and then completely breaking the adhesive 120 in a second direction. This step-by-step method effectively controls the stress distribution during the cleavage process. By initially partially breaking in the first direction and then completely breaking in the second direction, the cleavage process is smoother, avoiding stress concentration and disorganized cleavage caused by a single cleavage. This step-by-step method ensures that the cleaved cells 100 are neatly arranged, preventing fragmentation or misalignment, thereby providing a more stable foundation for subsequent processes.

[0154] Furthermore, the step-by-step breaking method significantly reduces the external force required during the splitting process, reducing the risk of damage to the cell 100 due to excessive external force. By gradually breaking the adhesive 120, the splitting process is more gentle, avoiding the damage to the cell 100 that may be caused by a single break, thereby improving the yield rate of the cell 100.

[0155] Furthermore, the step-by-step breaking of the adhesive 120 allows for more precise control of the cell splitting process, ensuring uniformity and consistency of the cell splitting. This high-precision cell splitting method helps improve the overall quality and performance of the cell 100, particularly in large-scale production, by significantly reducing efficiency losses caused by uneven cell splitting.

[0156] Preferably, a plurality of parallel first gaps are provided between the plurality of small battery sheets along the first direction, and a plurality of parallel second gaps are provided between the plurality of small battery sheets along the second direction, and the first gaps and the second gaps are perpendicular to each other;

[0157] S301 specifically includes the following steps:

[0158] Sequentially breaking the adhesive 120 in the plurality of first gaps step by step from the first direction;

[0159] S302 specifically includes the following steps:

[0160] The adhesive 120 in the plurality of second gaps is sequentially broken step by step from the second direction.

[0161] Specifically, the present invention employs a step-by-step breaking method during the step-by-step breaking of adhesive 120, specifically gradually breaking adhesive 120 within the gaps between cells 100 from a first direction and a second direction. This step-by-step breaking method processes only a small portion of adhesive 120 at each break, enabling more precise breaking along the predetermined gap and avoiding deviations or unevenness caused by a single break.

[0162] Furthermore, the step-by-step breaking method can ensure that the adhesive 120 breaks evenly in each gap, thereby avoiding dislocation or fragmentation of the battery cell 100 due to incomplete or excessive breaking.

[0163] Furthermore, the step-by-step fracture method completes the fracture step by step in multiple times, and each fracture only processes a small portion of the adhesive 120, thereby effectively dispersing the stress generated during the fracture process and avoiding stress concentration caused by a one-time fracture.

[0164] Furthermore, the gradual breaking method significantly reduces the risk of damage to the edge and internal structure of the battery cell 100 during the breaking process, reduces the generation of cracks and fragments, and thus improves the yield of the battery cell 100.

[0165] Furthermore, the step-by-step fracture method is more suitable for automated production equipment. By breaking the pieces step by step, the fracture process can be more precisely controlled with each operation, reducing the uncontrollable factors caused by a one-time fracture, thus better adapting to automated production lines and improving production efficiency.

[0166] Furthermore, by gradually breaking the adhesive 120 along the first direction and the second direction, the cell pieces 100 can be neatly arranged after breaking without misalignment or fragmentation. This design provides a precise foundation for the subsequent assembly of flexible solar cell modules.

[0167] like Figure 7 As shown, after the secondary splitting process, the protective layer 110, the silicon wafer 130 and the middle adhesive 120 in the three-layer structure of the cell 100 have all been split, and the split cell 100 is neatly arranged without fragmentation or dislocation.

[0168] Preferably, S400 specifically includes the following steps:

[0169] S401, gathering the plurality of small battery cells together to eliminate gaps between the plurality of small battery cells;

[0170] S402, expanding the plurality of small battery cells at equal intervals along a first direction;

[0171] S403, expanding the plurality of small battery cells at equal intervals along a second direction;

[0172] S404, simultaneously attaching a protective film 160 to the protective layer 110 of the plurality of small battery cells after the distance expansion;

[0173] The first direction and the second direction are perpendicular to each other.

[0174] Specifically, the present invention first gathers small cells to eliminate gaps, then expands them at equal intervals from two mutually perpendicular directions. This ensures that the cells 100 are neatly arranged and evenly spaced after expansion. Protective film 160 then maintains the expanded gaps between cells 100, facilitating the subsequent flow of cells 100. The present invention ensures that multiple cells 100 are neatly and evenly spaced, saving time and effort, reducing both time and labor costs, and achieving high efficiency and good results, making it suitable for mass production.

[0175] Furthermore, the cell pieces 100 used in flexible solar cells are relatively small in size and relatively large in number. If the prior art method of manual placement is used to arrange them at equal intervals, the arrangement efficiency is low, time-consuming and labor-intensive, and the time and labor costs are high. It is not suitable for mass production, and it is easy for adjacent cell pieces 100 to have different spacings, which affects the quality of the flexible solar cell. The present invention brings multiple cell pieces 100 closer together to achieve position regularity, and then expands the multiple cell pieces 100, which can achieve automated regularization of multiple cell pieces 100, with high regularization efficiency and good regularization effect, effectively reducing time and labor costs, and is suitable for mass production. It can also expand the spacing in the horizontal and vertical directions after the regularization is completed, and realize the automated arrangement of multiple cell pieces 100 by first regularizing and then expanding the spacing, ensuring the stability and uniformity of the expansion of the multiple cell pieces 100, with high arrangement efficiency and good arrangement effect, and facilitating the subsequent bonding of multiple cell pieces 100 to the flexible circuit board at equal intervals to realize the production of flexible solar cells.

[0176] Preferably, S401 specifically includes the following steps:

[0177] Multiple small battery cells are placed in the limiting gap, and the multiple small battery cells are gathered from all directions toward the middle of the limiting gap to eliminate the gaps between the multiple small battery cells; wherein the thickness of the limiting gap is greater than the thickness of the small battery cell and less than 2 times the thickness of the small battery cell.

[0178] Specifically, the limiting gap is greater than the thickness of the small battery cell and less than twice the thickness of the small battery cell, that is, only a single layer of small battery cells can exist at any position within the limiting gap, so as to limit the small battery cells and prevent the small battery cells from stacking during the regularization process, thereby ensuring the regularization effect. Multiple small battery cells are pushed toward the middle of the limiting gap from four directions at the same time, so that the multiple small battery cells are brought closer to each other to achieve position regularization, eliminate the gaps between adjacent small battery cells, achieve high-precision four-way regularization, prevent the occurrence of uneven small battery cells, and thus realize the automated regularization of multiple small battery cells, with high regularization efficiency and good regularization effect, effectively reducing time and labor costs, and being suitable for mass production.

[0179] like Figure 8 and Figure 9As shown, after the shaping, spacing expansion and coating process, multiple battery cells 100 have been equally spaced in the horizontal and vertical directions, the spacing between adjacent battery cells 100 is the same, and the protective film 160 is pasted on the protective layer 110 of multiple small battery cells.

[0180] It should be noted that the first direction and the second direction may be the width direction or the length direction of the battery cell 100 , respectively and independently.

[0181] The present invention also provides a production system for removing scrap edges, cracking, shaping, and extending the length of flexible module cells. A cell 100 includes a protective layer 110, an adhesive 120, and a silicon wafer 130, which are stacked in sequence. Both the protective layer 110 and the silicon wafer 130 are provided with aligned scratches 140. The edge of the protective layer 110 is also provided with scrap edge cracks 150. The production system includes a scrap edge removal device 210, a primary cracking device 220, a secondary cracking device 230, and a shaping and extending the length of the cell coating device 240, which are sequentially arranged. The waste edge removal device 210 is used to break the edge of the protective layer 110 along the waste edge crack 150 to remove the waste edge; the primary splitting device 220 is used to break the protective layer 110 and the silicon wafer 130 along their respective scratches 140 to split the battery cell 100 into multiple small battery cells connected to each other by adhesive 120; the secondary splitting device 230 is used to break the adhesive 120 between the gaps of multiple small battery cells; the shaping and expanding coating device 240 is used to expand the distance of multiple small battery cells so that the multiple small battery cells are distributed at equal intervals, and then the protective film 160 is simultaneously pasted on the protective layer 110 of the multiple small battery cells.

[0182] The coordinated work of the waste edge removal device 210, the primary splitting device 220, and the secondary splitting device 230 of the system of the present invention can more accurately control the splitting process, avoiding defects such as the fracturing of the battery cell 100 caused by excessive pressure in the traditional primary splitting process, and making the quality of the battery cell 100 after splitting more stable and uniform. The shaping and expanding coating device 240 can arrange hundreds of small battery cells at equal intervals and simultaneously adhere the protective film 160, ensuring the accuracy and consistency of the battery cell 100 during the arrangement and coating process, and improving the overall quality of the product. Compared with manual arrangement, the efficiency can be increased by dozens of times, thereby realizing the automated production of flexible battery cells, which has the advantages of improving production efficiency, reducing costs and increasing efficiency, improving product quality, and a high degree of automation.

[0183] Preferably, if Figure 10 As shown, the waste edge removal device 210, the primary splitting device 220, the secondary splitting device 230 and the shaping and expanding coating device 240 are arranged in a ring shape, and the battery cell 100 passes through the waste edge removal device 210, the primary splitting device 220, the secondary splitting device 230 and the shaping and expanding coating device 240 in sequence.

[0184] Preferably, if Figure 10As shown, the feeding direction and the discharging direction of the waste edge removal device 210 are located in the same direction of the same straight line; the feeding direction and the discharging direction of the primary splitting device 220 are set at 90°; the feeding direction and the discharging direction of the secondary splitting device 230 are set at 90°, and the discharging direction of the secondary splitting device 230 is opposite to the feeding direction of the primary splitting device 220; the discharging direction of the shaping and expanding coating device 240 is opposite to the feeding direction.

[0185] The arrangement and connection relationships of the various devices in the system of the present invention are cleverly and compactly arranged. In a preferred embodiment, the various devices are arranged in sequence and arranged in a ring, realizing full-process automated production from waste edge removal to shaping, expanding and laminating. Compared with the traditional manual film arrangement method, the tedious steps and time consumption of manual operation are greatly reduced, making the production process smoother and more efficient, and the production efficiency can be increased by dozens of times. The ring setting makes the connection between the various devices more compact, and the flow of materials between the various devices more rapid and smooth, reducing the time wasted due to the long distance between the devices or the unreasonable layout, and further improving the production efficiency of the entire system. The various devices are arranged in a ring, which greatly improves the integration of the entire system, relatively reduces the occupied area, and facilitates centralized management and maintenance.

[0186] Preferably, if Figure 10 As shown, the waste edge removal device 210 includes:

[0187] A first scrap edge removal module 211 is used to break two opposite edges of the protective layer 110 along the scrap edge cracks 150 to partially remove the scrap edges;

[0188] The second scrap edge removal module 212 is used to break the other two opposite edges of the protective layer 110 along the scrap edge cracks 150 to completely remove the scrap edges.

[0189] Specifically, if Figure 10 As shown, the scrap edge removal device 210 may further include a first conveying module 213, a first automatic feeding module 214, a first steering module 215, and a first automatic discharging module 216. The first conveying module 213 is used to transport the battery cells 100 within the scrap edge removal device 210; the first automatic feeding module 214 is used to feed the scrap edge-removed feed into the scrap edge removal device 210; the first steering module 215 is used to perform a 90° turn on the battery cells 100 before they leave the first scrap edge removal module 211 and enter the second scrap edge removal module 212; and the first automatic discharging module 216 is used to feed the battery cells 100 that have completed the scrap edge removal process into the primary splitting device 220.

[0190] Specifically, the first automatic feeding module 214 , the first waste edge removal module 211 , the first steering module 215 , the second waste edge removal module 212 , and the first automatic discharging module 216 are sequentially arranged on the first conveying module 213 .

[0191] Preferably, if Figure 10 As shown, the primary splitting device 220 includes:

[0192] A first splitting module 221 is used to break the protective layer 110 and the silicon wafer 130 along the scratch 140 from a first direction to split the solar cell 100 into multiple strips connected by the adhesive 120;

[0193] The second splitting module 222 is used to break the protective layer 110 and the silicon wafer 130 along the scratches 140 from a second direction to split the plurality of solar cells 100 into a plurality of small solar cells connected to each other by the adhesive 120 .

[0194] Specifically, if Figure 10 As shown, the primary splitting device 220 may further include a second conveying module 223, a second automatic feeding module 224, a second steering module 225, a pushing module 226, and a transfer module 227. The second conveying module 223 is used to transport the battery cells 100 within the primary splitting device 220; the second automatic feeding module 224 is used to feed the battery cells 100 into the primary splitting device 220; the second steering module 225 is used to turn the battery cells 100 90 degrees before leaving the first splitting module 221 and entering the second splitting module 222; and the pushing module 226 is used to feed the battery cells 100 that have completed primary splitting into the transfer module 227.

[0195] Specifically, the second automatic feeding module 224, the first splitting module 221, the second steering module 225, the second splitting module 222, the pushing module 226, and the transfer module 227 are sequentially arranged on the second conveying module 223. Among them, the number of the pushing module 226 and the transfer module 227 is corresponding, and there can be multiple.

[0196] Preferably, if Figure 10 As shown, the secondary splitting device 230 includes:

[0197] A third splitting module 231 is used to partially break the adhesive 120 between the gaps of the plurality of small battery cells from the first direction;

[0198] The fourth splitting module 232 is used to completely break the adhesive 120 between the gaps of the plurality of small battery cells from the second direction;

[0199] The first direction and the second direction are perpendicular to each other.

[0200] Specifically, if Figure 10 As shown, the secondary splitting device 230 may further include a third conveying module 233, a first transfer module 234, a film covering module 235, and a second transfer module 236. The third conveying module 233 is used to transport the battery cells 100 within the secondary splitting device 230; the first transfer module 234 is used to deliver the battery cells 100 from the transfer module 227 to the secondary splitting device 230; the film covering module 235 is used to cover the battery cells 100 before splitting; and the second transfer module 236 is used to deliver the battery cells 100 that have completed secondary splitting to the shaping and laminating device 240.

[0201] Specifically, the first transfer module 234, the third splitting module 231, the fourth splitting module 232, and the second transfer module 236 are sequentially arranged on the third conveying module 233. There may be multiple third splitting modules 231 and fourth splitting modules 232, and a film covering module 235 is arranged before each third splitting module 231 and fourth splitting module 232.

[0202] Preferably, if Figure 10 As shown, the shaping and extending laminating device 240 includes:

[0203] The shaping module 241 is used to gather the multiple small battery cells together to eliminate the gaps between the multiple small battery cells;

[0204] A first distance expansion module 242 is used to expand the distances of the plurality of small battery cells at equal intervals from a first direction;

[0205] A second distance expansion module 243 is used to expand the distances of the multiple small battery cells at equal intervals from a second direction;

[0206] The film pasting module 244 is used to simultaneously paste the protective film 160 on the protective layer 110 of the multiple small battery cells after the distance expansion;

[0207] The first direction and the second direction are perpendicular to each other.

[0208] Specifically, if Figure 10 As shown, the shaping, expanding and coating device 240 may further include a fourth conveying module 245 and a third transfer module 246. The fourth conveying module 245 is used to transport the battery cells 100 within the shaping, expanding and coating device 240; the third transfer module 246 is used to transport the battery cells 100 that have completed shaping, expanding and coating to the next process equipment.

[0209] Specifically, the shaping module 241, the first extending module 242, the second extending module 243, the film attaching module 244, and the third transfer module 246 are sequentially arranged on the fourth conveying module 245. The number of the shaping module 241, the first extending module 242, and the second extending module 243 is corresponding, and there can be multiple modules.

[0210] The preferred embodiments of the present invention have been described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, various simple variations of the technical solution of the present invention may be made, including combining the various technical features in any other appropriate manner. These simple variations and combinations should also be regarded as disclosed in the present invention and fall within the scope of protection of the present invention.

Claims

1. A method for producing a flexible module battery cell to remove waste edges, cracks, shape and extend the distance of the film, characterized in that: The cell comprises a protective layer, an adhesive, and a silicon wafer stacked in sequence, wherein the protective layer and the silicon wafer are both provided with scratches aligned with each other, and the edge of the protective layer is also provided with a waste edge crack. The production method comprises the following steps: S100, breaking the edge of the protective layer along the waste edge crack to remove the waste edge; S200, breaking the protective layer and the silicon wafer along their respective scratches to split the cell into a plurality of small cells connected to each other by adhesive; S300, breaking the adhesive between the gaps of the plurality of small battery cells; S400, spreading the plurality of small battery cells so that the plurality of small battery cells are evenly spaced, and then simultaneously attaching protective films to the protective layers of the plurality of small battery cells; Among them, S200 splits the protective layer and silicon wafer in the three-layer structure of the battery cell without splitting the adhesive in the middle, so that the battery cell remains in an adhered state after the splitting is completed. At this time, the battery cell as a whole is in a semi-fractured state, and the battery cell remains intact instead of being scattered into small particles, thereby facilitating the flow of the battery cell; S200 first splits the battery cell into multiple small battery cells connected to each other by adhesive, and S300 then breaks the adhesive between the multiple small battery cells, thereby reducing the pressure and damage to the battery cell during the splitting process; During the production process of flexible module cells, the waste edges are first removed, and then the flexible module cell is split into multiple small cells. Finally, the small cells are bonded to the flexible circuit board, with gaps between adjacent small cells. The flexible module cell is rolled up and unfolded through the gaps. S200 is specifically completed by a primary splitting device, which includes: a first splitting module, a second splitting module, a second conveying module, and a second diverting module; the first splitting module, the second diverting module, and the second splitting module are sequentially arranged on the second conveying module; The first splitting module is used to break the protective layer and the silicon wafer along the scratch from a first direction to split the battery cell into multiple strips connected by adhesive; the second splitting module is used to break the protective layer and the silicon wafer along the scratch from a second direction to split the multiple battery cells into multiple small battery cells connected to each other by adhesive; the second conveying module is used to transport the battery cells in a single splitting device; the second turning module is used to turn the battery cell 90° before it leaves the first splitting module and enters the second splitting module.

2. The method for producing a flexible module battery cell with waste edge removal, crack shaping, and distance expansion coating according to claim 1, characterized in that: S100 specifically includes the following steps: S101, breaking two opposite edges of the protective layer along the waste edge cracks to partially remove the waste edge; S102, breaking the other two opposite edges of the protective layer along the waste edge cracks to completely remove the waste edges.

3. The method for producing a flexible module battery cell with a waste edge removal, crack shaping, and distance expansion coating according to claim 2, characterized in that: The scrap edge cracks include two first scrap edge cracks and two second scrap edge cracks. The two first scrap edge cracks are respectively arranged at two opposite edges of the protective layer, and the two second scrap edge cracks are respectively arranged at the other two opposite edges of the protective layer.

4. The method for producing a flexible module battery cell with a waste edge removal, crack shaping, and distance expansion coating according to claim 3, characterized in that: S101 specifically includes the following steps: Simultaneously, two opposite edges of the protective layer are broken along the respective first waste edge cracks to partially remove the waste edges; and / or, S102 specifically includes the following steps: At the same time, the other two opposite edges of the protective layer are broken along their respective second waste edge cracks to completely remove the waste edges.

5. The method for producing a flexible module battery cell with a waste edge removal, crack shaping, and distance expansion coating according to claim 1, characterized in that: S200 specifically includes the following steps: S201, breaking the protective layer and the silicon wafer along the scratch from a first direction to split the solar cell into multiple strips connected by adhesive; S202, breaking the protective layer and the silicon wafer along the scratches from a second direction to split the plurality of solar cells into a plurality of small solar cells connected to each other by adhesive; The first direction and the second direction are perpendicular to each other.

6. The method for producing a flexible module battery cell with waste edge removal, crack shaping, and distance expansion coating according to claim 5, characterized in that: The ratio of the depth of the scratch on the protective layer to its thickness is in the range of 1 / 3-3 / 4, and the maximum width of the scratch on the protective layer is in the range of 10 μm-80 μm; and / or, The ratio of the depth of the scratch on the silicon wafer to its thickness is in the range of 1 / 3-2 / 3, and the maximum width of the scratch on the silicon wafer is in the range of 10 μm-50 μm; and / or, The hardness of the adhesive is in the range of 35-60 Shore A.

7. The method for producing a flexible module battery cell with a waste edge removal, crack shaping, and distance expansion coating according to claim 5, characterized in that: The scratches include multiple first scratches and multiple second scratches, the multiple first scratches are parallel and evenly spaced along the first direction, the multiple second scratches are parallel and evenly spaced along the second direction, and the first scratches and the second scratches are perpendicular to each other.

8. The method for producing a flexible module battery cell with a waste edge removal, crack shaping, and distance expansion coating according to claim 7, characterized in that: S201 specifically includes the following steps: Stepwise breaking the protective layer and the silicon wafer in sequence along the plurality of first scratches from a first direction so as to split the solar cell into a plurality of strips connected by adhesive; and / or, S202 specifically includes the following steps: The protective layer and the silicon wafer are sequentially broken along a plurality of the second scratches in a step-by-step manner from a second direction so as to split the plurality of battery cells into a plurality of small battery cells connected to each other by adhesive.

9. The method for producing a flexible module battery cell with a waste edge removal, crack shaping, and distance expansion coating according to claim 1, characterized in that: S300 specifically includes the following steps: S301, breaking the adhesive between the gaps of the plurality of small battery cells from a first direction; S302, completely breaking the adhesive between the gaps of the plurality of small battery cells from a second direction; The first direction and the second direction are perpendicular to each other.

10. The method for producing a flexible module battery cell with waste edge removal, crack shaping, and distance expansion coating according to claim 9, characterized in that: A plurality of parallel first gaps are formed between the plurality of small battery pieces along the first direction, and a plurality of parallel second gaps are formed between the plurality of small battery pieces along the second direction, and the first gaps and the second gaps are perpendicular to each other; S301 specifically includes the following steps: breaking the adhesive strips in the first gaps in sequence step by step from a first direction; S302 specifically includes the following steps: The adhesive strips in the second gaps are sequentially broken step by step from the second direction.

11. The method for producing a flexible module battery cell with a waste edge removal, crack shaping, and distance expansion coating according to claim 1, characterized in that: S400 specifically includes the following steps: S401, gathering the plurality of small battery cells to eliminate gaps between the plurality of small battery cells; S402, expanding the plurality of small battery cells at equal intervals from a first direction; S403, expanding the plurality of small battery cells at equal intervals from a second direction; S404, simultaneously attaching a protective film to the protective layers of the plurality of small battery cells after the distance expansion; The first direction and the second direction are perpendicular to each other.

12. The method for producing a flexible module battery cell with waste edge removal, crack shaping, and distance expansion coating according to claim 11, characterized in that: S401 specifically includes the following steps: The plurality of small battery cells are arranged in a limiting gap, and the plurality of small battery cells are gathered toward the middle of the limiting gap from all directions to eliminate the gaps between the plurality of small battery cells; wherein the thickness of the limiting gap is greater than the thickness of the small battery cell and less than 2 times the thickness of the small battery cell.

13. A flexible module battery cell waste edge removal, crack shaping, and distance expansion coating production system, characterized in that: The battery cell comprises a protective layer, an adhesive and a silicon wafer stacked in sequence, the protective layer and the silicon wafer are both provided with scratches aligned with each other, and the edge of the protective layer is also provided with a waste edge crack, and the production system comprises a waste edge removal device, a primary splitting device, a secondary splitting device and a shaping and expanding coating device arranged in sequence; the waste edge removal device is used to break the edge of the protective layer along the waste edge crack to remove the waste edge; the primary splitting device is used to break the protective layer and the silicon wafer along their respective scratches to split the battery cell into a plurality of small battery cells connected to each other by adhesive; the secondary splitting device is used to break the adhesive between the gaps of the plurality of small battery cells; the shaping and expanding coating device is used to expand the plurality of small battery cells so that the plurality of small battery cells are distributed at equal intervals, and then a protective film is simultaneously pasted on the protective layers of the plurality of small battery cells; The various devices in the production system are sequentially arranged and arranged in a ring, making the connection between the various devices more compact and the flow of materials between the various devices faster and smoother, thereby improving the integration of the production system, reducing the floor space, and improving production efficiency; The primary splitting device includes: a first splitting module, a second splitting module, a second conveying module and a second diverting module; the first splitting module, the second diverting module and the second splitting module are sequentially arranged on the second conveying module; The first splitting module is used to break the protective layer and the silicon wafer along the scratch from a first direction to split the battery cell into multiple strips connected by adhesive; the second splitting module is used to break the protective layer and the silicon wafer along the scratch from a second direction to split the multiple battery cells into multiple small battery cells connected to each other by adhesive; the second conveying module is used to transport the battery cells in a single splitting device; the second turning module is used to turn the battery cell 90° before it leaves the first splitting module and enters the second splitting module.

14. The flexible module battery cell waste edge removal, crack shaping, and distance expansion coating production system according to claim 13, characterized in that: The waste edge removal device, the primary splitting device, the secondary splitting device and the shaping and expanding coating device are arranged in a ring shape, and the battery cell passes through the waste edge removal device, the primary splitting device, the secondary splitting device and the shaping and expanding coating device in sequence; and / or, The feeding direction and the discharging direction of the waste edge removal device are located in the same direction of the same straight line; the feeding direction and the discharging direction of the primary splitting device are set at 90°; the feeding direction and the discharging direction of the secondary splitting device are set at 90°, and the discharging direction of the secondary splitting device is opposite to the feeding direction of the primary splitting device; the discharging direction of the shaping and expanding laminating device is opposite to the feeding direction.

15. The flexible module battery cell waste edge removal, crack shaping, and distance expansion coating production system according to claim 13, characterized in that: The waste edge removal device comprises: a first scrap edge removal module, configured to break two opposite edges of the protective layer along the scrap edge cracks to partially remove the scrap edges; The second scrap edge removing module is used to break the other two opposite edges of the protective layer along the scrap edge cracks to completely remove the scrap edges.

16. The flexible module battery cell waste edge removal, crack shaping, and distance expansion coating production system according to claim 13, characterized in that: The secondary splitting device comprises: a third splitting module, configured to break the adhesive between the gaps between the plurality of small battery cells from a first direction; a fourth splitting module, configured to completely break the adhesive between the gaps between the plurality of small battery cells from the second direction; The first direction and the second direction are perpendicular to each other.

17. The flexible module battery cell waste edge removal, crack shaping, and distance expansion coating production system according to claim 13, characterized in that: The shaping and distance-expanding laminating device comprises: A shaping module, configured to gather the plurality of small battery cells together to eliminate gaps between the plurality of small battery cells; A first distance extending module, configured to extend the distances of the plurality of small battery cells at equal intervals from a first direction; A second distance extending module, the second distance extending module is used to extend the plurality of small battery cells at equal intervals from a second direction; A film pasting module, which is used to simultaneously paste a protective film on the protective layers of the plurality of small battery cells after the distance expansion; The first direction and the second direction are perpendicular to each other.

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