Production method and system for slitter edge removing, splitting, shaping, distance expanding and film covering of flexible assembly battery piece

Abstract

The invention discloses a production method and system for slitter edge removal, splitting, shaping, distance expansion and film covering of a flexible assembly battery piece, and the production method sequentially comprises a full-automatic slitter edge removal process, a primary splitting process, a secondary splitting process and a shaping, distance expansion and film covering process, so that a large-size battery piece is split into hundreds of small-size battery pieces. And shaping, distance expanding and film covering operations are completed, and finally arrangement and distance expanding production of the battery pieces are achieved. According to the invention, the key process of splitting the complete large-size battery piece can be realized, hundreds of battery pieces can be arranged in order at equal intervals through two-time distance expansion operation, and compared with a traditional manual piece arrangement mode, the production efficiency can be obviously improved by dozens of times, so that the automatic production of the flexible battery piece is realized. The production method has the remarkable advantages of improving the production efficiency, reducing the cost, improving the product quality, achieving the high automation degree and the like.

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 flexible component battery cells by removing waste edges, cracks, shaping, and extending distances. Background Art

[0002] In the traditional solar cell production industry, the current mainstream cell specifications include 156x156mm, 166x166mm and 182x182mm. However, in order to achieve the flexibility and winding function of the cell, these standard-sized cells need to be cut into hundreds of small-sized cells and arranged in both the horizontal and vertical directions at a certain spacing. This design can form gaps between the cells, thereby achieving the winding function.

[0003] At present, the arrangement of small battery cells mainly relies on manual operation: first, the large battery cells are manually broken into small battery cells, and then they are arranged one by one using a jig. However, this production method has many shortcomings, such as low production efficiency, high cost and 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 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 automation. The present invention provides a 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, expansion and coating actions through a fully automatic waste edge removal process, a primary splitting process, a secondary splitting process, and a shaping, expansion and coating process to complete the arrangement and expansion of battery cells. The method can realize the processes of splitting and expanding the distance of a complete large battery cell, and can achieve two horizontal and vertical expansions to arrange hundreds of battery cells at equal spacing. Compared with manual arrangement, the efficiency can be improved by dozens of times, thereby realizing the automated production of flexible battery cells. The production method has the advantages of improving production efficiency, reducing costs and increasing efficiency, improving product quality, and a high degree of automation.

[0006] In order to achieve the above-mentioned object, in a first aspect, the present invention provides a method for producing a flexible component battery cell waste edge crack removal shaping and distance expansion film, 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 method comprises the following steps: S100, breaking the edge of the protective layer along the scrap edge crack to remove the scrap edge; S200, breaking the protective layer and the silicon wafer along their respective scratches so as to split the battery cell into a plurality of small battery cells connected to each other by adhesive; S300, breaking the adhesive between the gaps of the plurality of small battery cells; S400, extending the distances of 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.

[0007] Preferably, S100 specifically includes the following steps: S101, breaking two opposite edges of the protective layer along the scrap edge cracks to partially remove the scrap edge; S102, breaking the other two opposite edges of the protective layer along the scrap edge cracks to completely remove the scrap edges.

[0008] 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.

[0009] Preferably, S101 specifically includes the following steps: At the same time, two opposite edges of the protective layer are broken along their respective first waste edge cracks to partially remove the waste edges; Preferably, 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.

[0010] Preferably, S200 specifically includes the following steps: S201, breaking the protective layer and the silicon wafer along the scratches from a first direction so as to split the solar cell into a plurality of strips connected by adhesive; S202, breaking the protective layer and the silicon wafer along the scratches 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; The first direction and the second direction are perpendicular to each other.

[0011] 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; 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; Preferably, the hardness of the adhesive is in the range of 35-60 ShoreA.

[0012] 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 a first direction, and the plurality of second scratches are arranged in parallel and at equal intervals along a second direction.

[0013] Preferably, S201 specifically includes the following steps: Step by step, the protective layer and the silicon wafer are broken in sequence along a plurality of first scratches from a first direction so as to split the solar cell into a plurality of strips connected by adhesive; Preferably, S202 specifically includes the following steps: The protective layer and the silicon wafer are broken step by step in the second direction along a plurality of second scratches in sequence so as to split the plurality of battery cells into a plurality of small battery cells connected to each other by adhesive.

[0014] Preferably, 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 the second direction; The first direction and the second direction are perpendicular to each other.

[0015] Preferably, a plurality of battery cells and small battery cells have a plurality of parallel first gaps along a first direction of the battery cells, and a plurality of battery cells and small battery cells have a plurality of parallel second gaps along a second direction of the battery cells, and the first gaps of the battery cells and the second gaps of the battery cells are perpendicular to each other; S301 specifically includes the following steps: Sequentially breaking the adhesives in the first gaps of the plurality of battery cells step by step from the first direction; S302 specifically includes the following steps: The adhesives in the second gaps of the plurality of battery sheets are sequentially broken step by step from the second direction.

[0016] Preferably, S400 specifically includes the following steps: S401, gathering the plurality of small battery cells together to eliminate gaps between the plurality of small battery cells; S402, extending the plurality of small battery cells at equal intervals from a first direction; S403, extending the plurality of small battery cells at equal intervals from a second direction; S404, simultaneously pasting 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.

[0017] Preferably, S401 specifically includes the following steps: Multiple small battery cells are arranged 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.

[0018] In a second aspect, the present invention provides a flexible component battery cell waste edge removal, cracking, shaping and extending coating production system, the battery cell comprises a protective layer, an adhesive and a silicon wafer which are 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 a waste edge crack, the production system comprises a waste edge removal device, a primary cracking device, a secondary cracking device and a shaping and extending coating device which are 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 a plurality of small battery cells connected to each other by adhesive; the secondary cracking device is used to break the adhesive between the gaps of the plurality of small battery cells; the shaping and extending coating device is used to extend the plurality of small battery cells so that the plurality of small battery cells are distributed at equal intervals, and then the protective film is simultaneously pasted on the protective layer of the plurality of small battery cells.

[0019] Preferably, the waste edge removal device, the primary chip splitting device, the secondary chip 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 chip splitting device, the secondary chip splitting device and the shaping and expanding coating device in sequence; 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 coating device is opposite to the feeding direction.

[0020] Preferably, the waste edge removal device comprises: 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; The second scrap edge removal 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.

[0021] Preferably, the primary splitting device comprises: 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 so as to split the solar cell into a plurality of strips connected by an adhesive; The second splitting module is used to break the protective layer and the silicon slice along the scratches from a second direction so as to split the plurality of battery slices into a plurality of small battery slices connected to each other by adhesive.

[0022] Preferably, the secondary splitting device comprises: A third splitting module, the third splitting module is used to break the adhesive part between the gaps of the plurality of small battery cells from the first direction; 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; The first direction and the second direction are perpendicular to each other.

[0023] Preferably, the shaping and extending coating device comprises: A shaping module is used to gather multiple small battery cells together to eliminate gaps between the multiple small battery cells; A first distance expansion module, the first distance expansion module is used to expand the distances of multiple small battery sheets at equal intervals from a first direction; A second distance extension module, the second distance extension module is used to extend the distances of the multiple small battery sheets at equal intervals from a second direction; A film pasting module, which is used to simultaneously paste protective films on the protective layers of multiple small battery cells after the distance expansion; The first direction and the second direction are perpendicular to each other.

[0024] The present invention has the following beneficial effects: After research, it was found that the arrangement of small-particle battery cells is currently achieved mainly 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 slicing process in the prior art adopts a one-time slicing process, and there are two specific points to be improved. First, the large battery cell is completely split into small battery cells at one time. The slicing process requires greater pressure, which can easily fracture the battery cell and cause defects. Second, splitting the battery cell into small pieces at one time is not convenient for the subsequent process of the battery cell. Based on this, further research has been conducted and the present invention is proposed.

[0025] The present invention adopts the above-mentioned technical scheme, especially the production method of removing waste edges, cracking, shaping and expanding the distance of flexible component battery cells, including breaking the edge of the protective layer along the waste edge crack to remove the waste 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 multiple small battery cells; expanding the distance of multiple small battery cells so that multiple small battery cells are evenly spaced, and then simultaneously pasting protective films on the protective layers of multiple small 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 cracking process, a secondary cracking process, and a shaping, expanding and coating process, thereby completing the arrangement and expansion of battery cells. The method can realize the processes of cracking and expanding the distance of a complete large battery cell, and can realize 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.

[0026] Furthermore, the one-time splitting process in the prior art requires a large pressure, which can easily cause the cell to be crushed and produce defects. However, the present invention adopts a step-by-step splitting method, first splitting the large cell along the scratch part, and then further splitting the cell into multiple small cells, avoiding damage to the cell caused by excessive pressure, thereby effectively improving the success rate of splitting. At the same time, since the pressure and damage to the cell during the splitting process are reduced, the probability of defects such as cracks and fragments in the cell is correspondingly reduced, and the overall quality and yield rate of the cell are improved.

[0027] Furthermore, the primary splitting process in the prior art directly splits large cells into small cells, which makes subsequent process flow inconvenient. The present invention, through primary and secondary splitting processes, makes it easier to perform subsequent operations such as arrangement and distance expansion of the cells after splitting, thereby improving the efficiency and quality of subsequent processes.

[0028] The present invention also provides a flexible component battery cell waste edge removal, splitting, shaping, and distance expansion coating production system, including a waste edge removal device, a primary splitting device, a secondary splitting device, and a shaping and distance expansion 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 multiple small battery cells connected to each other by adhesive; the secondary splitting device is used to break the adhesive between the gaps of multiple small battery cells; the shaping and distance expansion coating device is used to expand the distance of 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. The waste edge removal device, the primary splitting device, and the secondary splitting device of the system of the present invention work in coordination, which can more accurately control the splitting process, avoid defects such as battery cell fracturing caused by excessive pressure in the traditional primary splitting process, and make the quality of the battery cells after splitting more stable and uniform. The shaping and laminating device can arrange hundreds of small battery cells at equal intervals and paste protective films at the same time, ensuring the accuracy and consistency of the battery cells during the arrangement and laminating 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.

[0029] 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 in a ring-shaped arrangement, realizing full-process automated production from waste edge removal to shaping and expanding the distance of film coating. 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-shaped setting makes the connection between the various devices more compact, and the flow of materials between the various devices is faster and smoother, reducing the time waste caused by 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

[0030] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 A schematic diagram of the front structure of an incoming battery cell provided by an embodiment of the present invention; Figure 2A schematic diagram of the side structure of an incoming battery cell provided by an embodiment of the present invention; Figure 3 A partially enlarged schematic diagram of the side structure of an incoming battery cell provided in an embodiment of the present invention; 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; 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; Figure 6 A partially enlarged schematic diagram of the side structure of a battery cell after a splitting process provided by an embodiment of the present invention; Figure 7 A partially enlarged schematic diagram of the side structure of a battery cell after a secondary splitting process provided by an embodiment of the present invention; 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; Fig. 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; Fig.10 A schematic diagram of the structure of a flexible module battery cell waste edge removal, crack shaping, and distance extension coating production system provided in an embodiment of the present invention.

[0032] Description of reference numerals: 100, battery cell; 110, protective layer; 120, adhesive; 130, silicon wafer; 140, scratches; 150, scrap edge cracks; 160, protective film; 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; 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; 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; 240, shaping and expanding 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

[0033] In the present invention, unless otherwise specified, directional words such as "upper, lower, left, right" are generally understood in conjunction with the directions shown in the drawings and actual applications.

[0034] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] The endpoints and any values ​​of the ranges 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 endpoint values ​​of each range, the endpoint values ​​of each range and the individual point values, and the individual point values ​​can be combined with each other to obtain one or more new numerical ranges, which should be considered as specifically disclosed in this article. Among them, the terms "optional" and "optional" all mean that they may be included or not included (or may be present or not).

[0037] It should be noted that the flexible cell sheet is a solar cell. In the production process of the flexible solar cell sheet assembly, it is necessary to first remove the waste edges of the flexible cell sheet, then break the flexible cell sheet into multiple small pieces, and then bond a preset number of small pieces to the flexible circuit board, with a certain gap between adjacent small pieces, to form a flexible solar cell sheet assembly. In this way, when the flexible solar cell sheet assembly needs to be used, the flexible circuit board is unfolded to achieve the flattening of multiple small pieces, so as to increase the contact area between the small pieces and the sunlight, thereby realizing the photovoltaic power generation function of the flexible solar cell sheet assembly and ensuring the power generation efficiency; when the flexible solar cell sheet assembly is not needed, the flexible circuit board is rolled up for easy storage and saves space. In 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, which is convenient for the storage of the flexible solar cell sheet assembly.

[0038] 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 stacked in sequence, and the protective layer 110 and the silicon wafer 130 are provided with scratches 140 aligned with each other, so as to facilitate the subsequent breaking of multiple small pieces and improve the efficiency of small piece preparation. The edge of the protective layer 110 is also provided with a waste edge crack 150, which is convenient for breaking the waste edge to improve the efficiency of waste edge removal. Among them, the protective layer 110 can be made of glass or resin and other materials, which is not limited by the present invention.

[0039] Furthermore, before the cell 100 enters the splitting process, it is necessary to form mutually aligned scratches 140 on the protective layer 110 and the silicon wafer 130 by laser or diamond scribing, and to form a waste edge crack 150 at the edge of the protective layer 110 .

[0040] Furthermore, in the current production process of flexible solar cell modules, after the silicon wafer 130 and the protective layer 110 are glued and dried, it is necessary to remove the excess waste edges around them. The traditional way to remove the waste edges is to break them off manually, which is inefficient, has high labor and time costs, and a low degree of automation. It is not suitable for mass production, and it is difficult to ensure uniform force when breaking them manually, which can easily lead to defects such as edge collapse, cracking, and jagged edges, affecting the quality of the battery cell 100. The present invention realizes full-process automated production from waste edge removal to shaping and extending 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 battery cell 100 caused by instability in traditional manual operations by precisely controlling the waste edge removal process, significantly improving the overall quality and yield rate of the product.

[0041] 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 single splitting process, and there are two specific points to be improved. First, the large battery cell 100 is completely split into small battery cells at one time, and the splitting process requires a large pressure, which can easily cause the battery cell 100 to be fractured and produce defects. Second, splitting the battery cell 100 into small pieces at one time is not convenient for the subsequent process of the battery cell 100. In order to solve the technical problems existing in the single splitting process, the inventor 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 splitting process splits the protective layer 110 and the silicon wafer 130 in the three-layer structure of the cell 100, but does not split the adhesive 120 in the middle, so that the split cell 100 remains in an adhered state. At this time, the cell 100 is in a semi-broken state as a whole (i.e., seemingly broken but not broken), which can maintain the integrity of the cell 100 without dispersing into small particles, thereby facilitating the circulation of the cell 100 and providing conditions for subsequent all-breaking, shaping, and extended-distance laminating production. The present invention has a high degree of automation and can effectively improve production capacity and product quality.

[0042] Furthermore, the battery cell 100 of the present 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 the small pieces of such size and quantity (it is time-consuming and labor-intensive, with high time and labor costs, and is not suitable for mass production, and it is easy for the spacing between adjacent battery cells 100 to be different, affecting the quality of the flexible solar cell). Therefore, the present invention first lays out the multiple battery cells 100 neatly and close to each other, and then expands the spacing of the multiple battery cells 100.

[0043] Based on the above situation, the present invention provides a method for producing a flexible component battery sheet to remove waste edges, cracks, reshape and extend the distance of the film, and the production method comprises the following steps: S100, breaking the edge of the protective layer 110 along the scrap edge crack 150 to remove the scrap edge; S200, breaking the protective layer 110 and the silicon wafer 130 along their respective scratches 140 to split the battery cell 100 into a plurality of small battery cells connected to each other by adhesive 120; S300, breaking the adhesive 120 between the gaps of the plurality of small battery cells; S400 , extending the distance 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.

[0044] The production method of the present invention completes the splitting of a large battery cell 100 into hundreds of small battery cells and performs the shaping, expanding and coating operations through a fully automatic waste edge removal process, a primary splitting process, a secondary splitting process, and a shaping, expanding and coating process, thereby completing the arrangement and expansion of the battery cells 100. The method can realize the splitting and expansion of the complete large battery cell 100, and can realize the horizontal and vertical expansion twice to arrange hundreds of battery cells 100 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. The production method has the advantages of improving production efficiency, reducing costs and increasing efficiency, improving product quality, and a high degree of automation.

[0045] Preferably, S100 specifically includes the following steps: S101, breaking two opposite edges of the protective layer 110 along the scrap edge crack 150 to partially remove the scrap edge; S102 , breaking the other two opposite edges of the protective layer 110 along the scrap edge cracks 150 to completely remove the scrap edges.

[0046] 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 is prone to defects such as broken 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 yield rate of the product.

[0047] Furthermore, the present invention can better adapt to automated equipment by removing waste edges in steps, and realize mechanization and automation of waste edge removal, thereby greatly improving production efficiency and reducing labor costs.

[0048] Furthermore, the edge area of ​​the flexible solar cell 100 is a weak point where stress is concentrated. Especially when removing the scrap edge, if the operation is improper, it is easy to generate cracks or cracks at the edge, thereby affecting the overall performance of the cell 100. In the process of removing the scrap edge in each step of the present invention, the scrap edge is removed from the opposite edge, which can effectively disperse the stress and avoid 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, maintain the stress balance at the edge of the cell 100, prevent cracks, and ensure that the cell 100 maintains structural integrity and stability during subsequent processing and use.

[0049] 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 arranged at two opposite edges of the protective layer 110, and the two second scrap edge cracks are respectively arranged at the other two opposite edges of the protective layer 110. That is, the scrap edges of the flexible battery sheet are four, and the four scrap edges are respectively arranged around the flexible battery sheet, and the four scrap edge cracks together form a regular rectangle to ensure the uniformity of subsequent small piece breaking.

[0050] Preferably, S101 specifically includes the following steps: At the same time, two opposite edges of the protective layer 110 are broken along their respective first waste edge cracks to partially remove the waste edges; Preferably, S102 specifically includes the following steps: 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.

[0051] Specifically, the present invention performs waste edge removal operations on two opposite edges at the same time during the step-by-step waste edge removal process, which can effectively balance the stress on both sides of the battery cell 100. In the traditional method, if the edges are removed one by one, the stress release on one side of the battery cell 100 may be uneven, thereby causing local deformation or cracks. However, the present invention ensures uniform stress release by operating two opposite edges at the same time, avoids structural damage caused by stress concentration, and thus maintains the overall structural stability of the battery cell 100.

[0052] Furthermore, processing two opposite edges simultaneously can ensure uniform removal of waste edges. Since the operation is symmetrical, this design can avoid uneven removal caused by different operation sequences, thereby ensuring the flatness and consistency of the edge of the cell 100. This is crucial for the smooth progress of subsequent processes (such as splitting, distance expansion and lamination).

[0053] Furthermore, by removing the waste edges of two opposite edges at the same time, the generation of cracks and defects can be significantly reduced. This is because the symmetrical operation can better control the stress distribution and avoid edge cracks caused by excessive local stress. This design not only improves the quality of the battery cell 100, but also improves the yield rate of the product.

[0054] Furthermore, processing the waste edges of two opposite edges at the same time can significantly improve production efficiency. Compared with the method of removing edges one by one, this symmetrical operation reduces the number of operation steps and time, especially in automated production, which can better adapt to efficient production equipment, thereby achieving high efficiency in large-scale production.

[0055] like Figure 4 and Figure 5 As shown, after the waste edge removal process, the waste edge of the battery cell 100 has been removed, and the edges of the protection layer 110 and the silicon wafer 130 of the battery cell 100 are aligned vertically.

[0056] Preferably, S200 specifically includes the following steps: S201, breaking the protective layer 110 and the silicon wafer 130 along the scratch 140 from a first direction to split the battery cell 100 into a plurality of strips connected by the adhesive 120; S202, breaking the protective layer 110 and the silicon wafer 130 along the scratch 140 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; The first direction and the second direction are perpendicular to each other.

[0057] Specifically, the one-time 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, but does not split the adhesive 120 in the middle, so that the battery cell 100 after the splitting is still kept in an adhered state. At this time, the battery cell 100 is in a semi-broken state as a whole (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.

[0058] Furthermore, the present invention adopts a step-by-step breaking method to perform a splitting process, specifically including breaking the protective layer 110 and the silicon wafer 130 along the scratch 140 step by step from two mutually perpendicular directions, while maintaining the connection state of the intermediate adhesive 120, so that the battery cell 100 is in a semi-broken state (seemingly broken but not broken). This step-by-step breaking method can effectively disperse the stress generated during the splitting process and avoid stress concentration caused by a one-time complete break. This design reduces the possibility of defects such as cracks and fragments in the battery cell 100 during the splitting process, thereby significantly improving the yield rate of the battery cell 100.

[0059] 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 breaks. 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.

[0060] Furthermore, by breaking in steps, it is possible to better adapt to automated equipment and realize mechanization and automation of splitting, thereby greatly improving production efficiency and reducing labor costs.

[0061] 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; 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; Specifically, a reasonable depth and width of the scratch 140 on the protective layer 110 can ensure the consistency of the crack, can effectively form the crack and avoid breaking before it is bonded with 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 breaking or splitting before bonding, which is beneficial to subsequent bonding and splitting operations while reducing the loss of battery component efficiency.

[0062] Furthermore, a reasonable depth and width of the scratch 140 can prevent the battery cell 100 from being broken due to other external factors before the battery cell 100 is split, while ensuring that the battery cell 100 can be split smoothly.

[0063] Preferably, the hardness of the adhesive 120 is in the range of 35-60 ShoreA.

[0064] 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 this is not limited thereto and the present application does not make any limitation thereto.

[0065] Specifically, the hardness and thickness of the adhesive 120 are reasonably set in the present invention, which has the following effects: First, it can ensure that the adhesive 120 can bond the protective layer 110 and the silicon wafer 130 together in the production process of the entire battery cell 100 without falling off. Second, it can ensure that the adhesive 120 between each small battery cell will not break during the first splitting process. Third, it can ensure that the adhesive 120 between each small battery cell is sufficient to be broken during the second splitting process.

[0066] Preferably, if Figure 1As shown, the scratches 140 include a plurality of first scratches and a plurality of second scratches, wherein the plurality of first scratches are arranged in parallel and at equal intervals along a first direction, and the plurality of second scratches are arranged in parallel and at equal intervals along a second direction, so that the protective layer 110 and the silicon wafer 130 can be broken at the same time, thereby breaking the battery cell 100 into a plurality of small pieces.

[0067] Preferably, S201 specifically includes the following steps: 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; Preferably, S202 specifically includes the following steps: 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 that the plurality of battery cells 100 are split into a plurality of small battery cells connected to each other by the adhesive 120 .

[0068] Specifically, in the process of breaking the protective layer 110 and the silicon wafer 130 step by step, the present invention uses a step-by-step breaking method to gradually complete the splitting in multiple times, and each break only processes a small part of the battery cell 100 structure, rather than completing the entire splitting process at one time. This step-by-step breaking method can effectively disperse the stress generated during the splitting process, avoid stress concentration caused by a one-time break, and thus reduce the possibility of defects such as cracks and fragments in the battery cell 100 during the splitting process.

[0069] Furthermore, the step-by-step breaking method can more accurately control the splitting process and ensure the uniformity and consistency of the splitting. By breaking step by step, each operation can be performed more accurately along the scratch 140, avoiding deviation and unevenness caused by one-time breaking. This high-precision splitting method helps to improve the overall quality and performance of the battery cell 100.

[0070] Furthermore, the step-by-step breaking method can significantly reduce the external force required in the splitting process, and reduce the risk of damage to the battery cell 100 due to excessive external force. Each break only processes a small part of the structure, avoiding potential damage to the battery cell 100 caused by the large external force required for a one-time break, thereby improving the yield rate of the battery cell 100.

[0071] Furthermore, through the step-by-step breaking method, the edges of the cell 100 after the splitting are more neat and the structure is 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.

[0072] Furthermore, the step-by-step breaking method is more suitable for the operation of automated production equipment. By breaking step by step, the splitting process can be more accurately controlled each time, reducing the uncontrollable factors caused by one-time breaking. This design can better adapt to automated production lines, improve production efficiency, reduce manual intervention, and thus achieve high efficiency and stability in large-scale production.

[0073] 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 split battery cell 100 remains 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).

[0074] Preferably, S300 specifically includes the following steps: S301, partially breaking the adhesive 120 between the gaps of the plurality of small battery cells from a first direction; S302, completely breaking the adhesive 120 between the gaps of the plurality of small battery cells from the second direction; The first direction and the second direction are perpendicular to each other.

[0075] Specifically, the present invention adopts a method of breaking the adhesive 120 in steps, specifically, first partially breaking the adhesive 120 from the first direction, and then completely breaking the adhesive 120 from the second direction. The method of breaking the adhesive 120 in steps can effectively control the stress distribution during the splitting process. By first partially breaking from the first direction and then completely breaking from the second direction, the splitting process is smoother, avoiding stress concentration and disordered splitting caused by one-time breakage. This step-by-step breaking method can ensure that the battery cells 100 are neatly arranged after splitting, without fragmentation or dislocation, thereby providing a more stable foundation for subsequent processes.

[0076] Furthermore, the step-by-step breaking method significantly reduces the external force required in the splitting process, and reduces the risk of damage to the battery cell 100 caused by excessive external force. By gradually breaking the adhesive 120, the splitting process is more gentle, avoiding damage to the battery cell 100 that may be caused by a one-time break, thereby improving the yield rate of the battery cell 100.

[0077] Furthermore, the step-by-step breaking of the adhesive 120 can more accurately control the splitting process and ensure the uniformity and consistency of the splitting. This high-precision splitting method helps to improve the overall quality and performance of the battery cell 100, especially in large-scale production, and can significantly reduce the efficiency loss caused by uneven splitting.

[0078] 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; S301 specifically includes the following steps: The adhesive glue 120 in the plurality of first gaps is sequentially broken step by step from the first direction; S302 specifically includes the following steps: The adhesives 120 in the plurality of second gaps are sequentially broken step by step from the second direction.

[0079] Specifically, the present invention adopts a step-by-step breaking method in the process of breaking the adhesive 120 step by step, specifically, breaking the adhesive 120 in the gap between the battery cells 100 step by step from the first direction and the second direction. Through the step-by-step breaking, only a small part of the adhesive 120 is processed each time, and it can be broken more accurately along the predetermined gap, avoiding deviation or unevenness caused by one-time breaking.

[0080] Furthermore, the step-by-step breaking method can ensure that the adhesive 120 is broken evenly in each gap, thereby avoiding the dislocation or fragmentation of the battery cell 100 due to incomplete or excessive breaking.

[0081] 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.

[0082] 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 rate of the battery cell 100.

[0083] Furthermore, the step-by-step breaking method is more suitable for the operation of automated production equipment. By breaking step by step, the breaking process can be more accurately controlled each time, reducing the uncontrollable factors caused by one-time breaking, thereby better adapting to the automated production line and improving production efficiency.

[0084] Furthermore, by gradually breaking the adhesive 120 along the first direction and the second direction, the cell sheets 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.

[0085] like Figure 7 As shown, after the secondary splitting process, the protective layer 110, the silicon wafer 130 and the intermediate 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.

[0086] Preferably, S400 specifically includes the following steps: S401, gathering the plurality of small battery cells together to eliminate gaps between the plurality of small battery cells; S402, extending the plurality of small battery cells at equal intervals from a first direction; S403, extending the plurality of small battery cells at equal intervals from a second direction; S404, simultaneously pasting a protective film 160 on the protective layer 110 of the plurality of small battery cells after the distance expansion; The first direction and the second direction are perpendicular to each other.

[0087] Specifically, the present invention gathers small battery cells to eliminate gaps first, and then expands the distances at equal intervals from two mutually perpendicular directions, so as to ensure that the battery cells 100 are neatly arranged and have uniform spacing after expansion, and then the gaps between the battery cells 100 are maintained by the protective film 160, so as to facilitate the subsequent circulation of the battery cells 100. The present invention can ensure that multiple battery cells 100 are neatly arranged at equal intervals, save time and labor, reduce time and labor costs, have high arrangement efficiency, good arrangement effect, and is suitable for mass production.

[0088] Furthermore, the cell pieces 100 used in flexible solar cells are small in size and large in number. If the prior art is used to arrange them at equal intervals by manual placement, 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 the spacing between adjacent cell pieces 100 to be different, which affects the quality of flexible solar cells. The present invention allows multiple cell pieces 100 to be brought close to each other to achieve position regularity, and then expands the distance of multiple cell pieces 100, which can realize the automatic 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 realize the expansion of the horizontal and vertical directions after the regularization is completed, and realize the automatic arrangement of multiple cell pieces 100 by first regularizing and then expanding the distance, ensuring the stability and uniformity of the expansion of multiple cell pieces 100, with high arrangement efficiency and good arrangement effect, which is convenient for the subsequent bonding of multiple cell pieces 100 to the flexible circuit board at equal intervals to realize the production of flexible solar cells.

[0089] Preferably, S401 specifically includes the following steps: Multiple small battery cells are arranged 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.

[0090] Specifically, the limiting gap is larger than the thickness of the small battery cell and smaller than 2 times the thickness of the small battery cell, that is, only one 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 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, and prevent the occurrence of uneven small battery cells, thereby achieving 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.

[0091] like Figure 8 and Fig. 9 As shown, after the shaping 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 a protective film 160 is pasted on the protective layer 110 of multiple small battery cells.

[0092] 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.

[0093] The present invention also provides a production system for removing waste edges, cracking, shaping and extending the distance of a flexible component battery cell. The battery cell 100 includes a protective layer 110, an adhesive 120 and a silicon wafer 130 which are stacked in sequence. The protective layer 110 and the silicon wafer 130 are both provided with scratches 140 aligned with each other. The edge of the protective layer 110 is also provided with waste edge cracks 150. The production system includes a waste edge removal device 210, a primary cracking device 220, a secondary cracking device 230 and a shaping and extending distance coating device 240 which are arranged in sequence. The scrap edge removal device 210 is used to break the edge of the protective layer 110 along the scrap edge crack 150 to remove the scrap 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 the 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 evenly spaced, and then the protective film 160 is simultaneously pasted on the protective layer 110 of the multiple small battery cells.

[0094] 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 paste the protective film 160 at the same time, 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 improved 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.

[0095] Preferably, if Fig.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.

[0096] Preferably, if Fig.10 As 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 arranged at 90°; the feeding direction and the discharging direction of the secondary splitting device 230 are arranged 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.

[0097] The arrangement and connection relationship of each device in the system of the present invention is cleverly and compactly arranged. In a preferred embodiment, each device is arranged in sequence and arranged in a ring, realizing full-process automated production from waste edge removal to shaping and expanding the distance of coating. 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-shaped setting makes the connection between each device more compact, and the flow of materials between each device is faster and smoother, reducing the time waste caused by the long distance between devices or unreasonable layout, and further improving the production efficiency of the entire system. The ring-shaped setting of each device greatly improves the integration of the entire system, reduces the floor space relatively, and facilitates centralized management and maintenance.

[0098] Preferably, if Fig.10 As shown, the waste edge removal device 210 includes: A first scrap edge removal module 211, the first scrap edge removal module 211 is used to break two opposite edges of the protective layer 110 along the scrap edge crack 150 to partially remove the scrap edge; The second scrap edge removal module 212 is used to break the other two opposite edges of the protection layer 110 along the scrap edge cracks 150 to completely remove the scrap edges.

[0099] Specifically, Fig.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 turning module 215, and a first automatic discharging module 216. The first conveying module 213 is used to transport the battery cell 100 in the scrap edge removal device 210; the first automatic feeding module 214 is used to feed the scrap edge removal feed into the scrap edge removal device 210; the first turning module 215 is used to turn the battery cell 100 90 degrees before it leaves the first scrap edge removal module 211 and enters the second scrap edge removal module 212; the first automatic discharging module 216 is used to feed the battery cell 100 that has completed the scrap edge removal process into the primary splitting device 220.

[0100] 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 .

[0101] Preferably, if Fig.10 As shown, the primary splitting device 220 includes: A first splitting module 221, which 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 a plurality of strips connected by the adhesive 120; The second splitting module 222 is used to break the protection layer 110 and the silicon wafer 130 along the scratch 140 from a 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 .

[0102] Specifically, Fig.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 cell 100 in the primary splitting device 220; the second automatic feeding module 224 is used to feed the battery cell 100 into the primary splitting device 220; the second steering module 225 is used to perform a 90° turn on the battery cell 100 before the battery cell 100 leaves the first splitting module 221 and enters the second splitting module 222; and the pushing module 226 is used to feed the battery cell 100 that has completed the primary splitting into the transfer module 227.

[0103] 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.

[0104] Preferably, if Fig.10 As shown, the secondary splitting device 230 includes: A third splitting module 231, the 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; A fourth splitting module 232, which is used to completely break the adhesive 120 between the gaps of the plurality of small battery cells from the second direction; The first direction and the second direction are perpendicular to each other.

[0105] Specifically, Fig.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 cell 100 in the secondary splitting device 230; the first transfer module 234 is used to send the battery cell 100 from the transfer module 227 to the secondary splitting device 230; the film covering module 235 is used to cover the battery cell 100 before splitting; the second transfer module 236 is used to send the battery cell 100 that has completed the secondary splitting into the shaping and extending film covering device 240.

[0106] Specifically, the first transfer module 234, the third split module 231, the fourth split module 232, and the second transfer module 236 are sequentially arranged on the third conveying module 233. There may be multiple third split modules 231 and fourth split modules 232, and a film covering module 235 is arranged before each third split module 231 and fourth split module 232.

[0107] Preferably, if Fig.10 As shown, the shaping and extending coating device 240 includes: A shaping module 241, which is used to gather a plurality of small battery cells together to eliminate gaps between the plurality of small battery cells; A first distance expansion module 242, the first distance expansion module 242 is used to expand the distances of multiple small battery cells at equal intervals from a first direction; A second distance expansion module 243, the second distance expansion module 243 is used to expand the distances of the multiple small battery sheets at equal intervals from a second direction; The film pasting module 244 is used to simultaneously paste the protective film 160 on the protective layer 110 of the plurality of small battery cells after the distance expansion; The first direction and the second direction are perpendicular to each other.

[0108] Specifically, Fig.10 As shown, the shaping and laminating 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 cell 100 in the shaping and laminating device 240; the third transfer module 246 is used to transport the battery cell 100 after shaping and laminating to the next process equipment.

[0109] 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.

[0110] The preferred embodiments of the present invention are described in detail above, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, including the combination of various technical features in any other suitable manner, and these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope 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 which are 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 method comprises the following steps: S100, breaking the edge of the protective layer along the scrap edge crack to remove the scrap edge; S200, breaking the protective layer and the silicon wafer along their respective scratches so as to split the battery cell into a plurality of small battery cells connected to each other by adhesive; S300, breaking the adhesive between the gaps of the plurality of small battery cells; S400, extending the distance 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.

2. The method for producing a flexible module battery cell 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 scrap edge cracks to partially remove the scrap edge; S102, breaking the other two opposite edges of the protective layer along the scrap edge cracks to completely remove the scrap edges.

3. The method for producing a flexible module battery cell 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 waste edge removal, crack shaping and distance expansion coating according to claim 3 is 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 the respective second waste edge cracks to completely remove the waste edges.

5. The method for producing a flexible module battery cell 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 so as to split the solar cell into a plurality of strips connected by adhesive; S202, breaking the protective layer and the silicon wafer along the scratch 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; The first direction and the second direction are perpendicular to each other.

6. The method for producing a flexible module battery cell by removing waste edges, cracks, shaping and extending the distance 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 ShoreA.

7. The method for producing a flexible module battery cell by removing waste edges, cracks, shaping and extending the distance according to claim 5, characterized in that: The scratches include a plurality of first scratches and a plurality of second scratches, wherein 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, and the first scratches and the second scratches are perpendicular to each other.

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

9. The method for producing a flexible module battery cell 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 portion 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 the second direction; The first direction and the second direction are perpendicular to each other.

10. The method for producing a flexible module battery cell waste edge removal, crack shaping and distance expansion coating according to claim 9, characterized in that: 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; S301 specifically includes the following steps: Sequentially breaking the plurality of adhesives in the first gaps step by step from a first direction; S302 specifically includes the following steps: The adhesives in the plurality of second gaps are sequentially broken step by step from the second direction.

11. The method for producing a flexible module battery cell 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 sheets together to eliminate gaps between the plurality of small battery sheets; S402, extending the plurality of small battery cells at equal intervals from a first direction; S403, extending the plurality of small battery cells at equal intervals from a second direction; S404, simultaneously pasting 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.

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

13. A flexible module battery sheet 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 which are 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 which are 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 layer of the plurality of small battery cells.

14. The flexible module battery cell waste edge removal, crack shaping, and distance extension 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 extending 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 extending 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 arranged at 90°; the feeding direction and the discharging direction of the secondary splitting device are arranged 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 coating device is opposite to the feeding direction.

15. The flexible module battery sheet waste edge removal, crack shaping, and distance extension coating production system according to claim 13, characterized in that: The waste edge removal device comprises: 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; The second scrap edge removal 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 sheet waste edge removal, crack shaping, and distance extension coating production system according to claim 13, characterized in that: The primary splitting device comprises: 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 so as to split the solar cell into a plurality of strips connected by an adhesive; The second splitting module is used to break the protection layer and the silicon wafer along the scratch 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.

17. The flexible module battery sheet waste edge removal, crack shaping, and distance extension coating production system according to claim 13, characterized in that: The secondary splitting device comprises: A third splitting module, the third splitting module is used to break the adhesive part between the gaps of the plurality of small battery cells from the first direction; 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; The first direction and the second direction are perpendicular to each other.

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

Images