A flexible module battery sheet cracking strip expansion device and expansion method

Abstract

The present invention belongs to the field of flexible batteries, and specifically relates to a flexible component cell splitting and expanding device and an expanding method. The expanding device realizes the synchronous completion of the horizontal and vertical expansion of the flexible solar module cell in the same process through the coordinated cooperation of key mechanisms such as a feeding component, an active expanding component, a follower expanding component, and a material picking and placing component, effectively overcoming the problems of lengthy processes and low efficiency caused by the step-by-step processing required in traditional technologies; through the cam expanding mechanism provided in the active expanding component and the follower expanding component, efficient control of the horizontal expansion of the cell is achieved, ensuring the accurate position of each cell during the arrangement process, avoiding the impact of expansion errors on the subsequent welding or packaging quality; using the main and follower expanding components, the outermost row of small cell sheets is separated from the adjacent row of small cell sheets pressed by the pressing plate, and then after the horizontal expansion, they are placed on the material placement platform at a specific spacing, thereby realizing longitudinal expansion.

Description

Technical Field

[0001] The present invention belongs to the technical field of flexible batteries, and in particular relates to a flexible component battery sheet splitting and expanding device and a method for expanding the spacing. Background Art

[0002] In order to achieve the windability and bendability of flexible components, it is usually necessary to cut large-sized solar cells into hundreds of smaller cells, and then arrange and connect these small cells in an equidistant manner. During the arrangement of small cells, they are required to maintain strict equidistant distribution in both the horizontal and vertical directions to meet the requirements of subsequent packaging, welding, electrical connection and overall component stability. In traditional technology, in order to achieve bidirectional equidistant arrangement, it is usually necessary to go through two processes of lateral expansion and longitudinal expansion. This step-by-step expansion method not only has a complicated process flow and a prolonged production cycle, but also takes up a lot of equipment space. In addition, different flexible component products often have different design requirements for the expansion gap, and traditional expansion devices are often designed for specific specifications, lacking flexibility and versatility.

[0003] Furthermore, existing large-size solar cells typically consist of a stacked glass sheet, an adhesive layer, and a silicon wafer, with silver paste conductive lines on the back of the silicon wafer. In related art, the three-layer structure is cracked. Although the glass and silicon wafers are cracked, the cell remains connected due to the bonding effect of the adhesive and silver paste lines, resulting in a semi-cracked appearance. Existing technologies still have shortcomings in achieving the rupture of the adhesive layer after cracking, and in achieving stable and reliable gap control based on this. Summary of the Invention

[0004] The present invention aims to provide a device and method for cracking and expanding the spacing of cells in flexible modules, addressing at least the technical problem of cracking cells that have not yet broken and then controlling the gap expansion. The proposed device allows for flexible adjustment of expansion parameters, features a compact design, and facilitates the integrated use of multiple devices, significantly improving the production efficiency of flexible solar modules and the adaptability of production lines.

[0005] To achieve the above objectives, in a first aspect, an embodiment of the present invention provides a flexible module battery cell splitting and spacing device, wherein the battery cell has been split into multiple small battery cells connected to each other by adhesive, and the splitting and spacing device includes: a loading assembly disposed on a base along a first direction, an active spacing assembly, and a follower spacing assembly;

[0006] The loading assembly includes a pushing mechanism and a pressing mechanism, wherein the pushing mechanism is used to place the outermost row of small battery cells of the battery cell between the active expansion assembly and the follower expansion assembly, and the pressing mechanism is used to press the other row of small battery cells adjacent to the outermost row of small battery cells;

[0007] The active expanding assembly includes a plurality of active expanding suction plates that can move along a first direction, and a first cam expanding mechanism; the follow-up expanding assembly includes a plurality of follow-up expanding suction plates; the plurality of active expanding suction plates and the plurality of follow-up expanding suction plates are used to absorb and clamp both sides of the outermost row of small battery sheets, and synchronously move along the first direction to separate the outermost row of small battery sheets from the battery sheets; the first cam expanding mechanism is used to drive the plurality of active expanding suction plates to separate from each other along the second direction, so as to expand the outermost row of small battery sheets along the second direction; wherein the first direction is the length direction of the base, and the second direction is the width direction of the base.

[0008] In one possible implementation, the follow-up expansion assembly further includes a second cam expansion mechanism, which is connected to the plurality of follow-up expansion suction plates. The second cam expansion mechanism can move along the first direction and the vertical direction, and is used to cooperate with the first cam expansion mechanism to achieve expansion of the battery cell along the second direction.

[0009] In one possible implementation, the active expansion component also includes: a first transmission module and an expansion mounting plate; the first transmission module is fixed on the base, and is used to drive the expansion mounting plate to move along the first direction; multiple active expansion suction plates and the first cam expansion mechanism are all arranged on the expansion mounting plate; the first transmission module includes: two transverse linear guides, a transverse servo motor, a helical gear and a helical rack, the two transverse linear guides are distributed in parallel on both sides below the expansion mounting plate, and are fixed on the base; the helical gear is installed on the transmission shaft of the transverse servo motor, and the helical gear and the helical rack are engaged with each other, thereby driving the expansion mounting plate to move along the first direction.

[0010] In one possible implementation, the first cam expansion mechanism includes: a track plate and a second transmission module; the second transmission module is connected to the track plate, the track plate is provided with a plurality of guide grooves, each of the active expansion suction plates is provided with a cam follower, and each of the cam followers is slidably engaged with one of the guide grooves; the second transmission module is used to drive the track plate to move so that the cam follower moves relative to each other in the guide groove, thereby separating the plurality of active expansion suction plates from each other along the second direction.

[0011] In a possible implementation, the cross section of the guide groove is a groove that is symmetrically inclined on both sides, and the inclination angle of the cross section of the guide groove gradually increases from the middle of the track plate toward both sides.

[0012] In one possible implementation, the second transmission module includes: a power mounting plate, a bearing mounting plate, a nut mounting plate, a screw servo module and a nut, wherein the power mounting plate and the bearing mounting plate are respectively fixed on the same side of the expansion mounting plate; the screw servo module is respectively fixed on the power mounting plate and the bearing mounting plate, and the nut mounting plate is installed on the screw of the screw servo module and is fixed by the nut and the thread on the screw; the lower end of the nut mounting plate is connected to the track plate.

[0013] In one possible implementation, the first cam expansion mechanism further includes: a track plate guide rail and an expansion linear guide rail; the track plate guide rail and the expansion linear guide rail are perpendicular to each other, the track plate moves along the first direction on the track plate guide rail, and the multiple active expansion suction plates separate from each other along the second direction on the expansion linear guide rail.

[0014] In one possible implementation, the second cam expansion mechanism includes a follower expansion base plate, a follower track plate and a follower transverse track; wherein, the follower expansion suction plate is installed on the follower expansion base plate, the follower track plate is provided with a follower guide groove, and the follower expansion suction plate is provided with a follower cam follower; the follower track plate is arranged opposite to the track plate, and the follower guide groove and the follower cam follower correspond in position to the guide groove and the cam follower on the first cam expansion mechanism; guide columns are respectively provided at both ends of the follower expansion base plate, and the guide columns are used to fit together with the second guide sleeve on the track plate, so that the active expansion component and the follower expansion component operate synchronously.

[0015] In one possible implementation, the follower expansion assembly further includes a follower mounting frame, a third transmission module, and a spring return mechanism; wherein the third transmission module is used to drive the second cam expansion mechanism to rise and fall, so as to achieve coordination with the first cam expansion mechanism and synchronous operation along the first direction.

[0016] In one possible implementation, the spring return mechanism includes: a return cylinder, a return cylinder mounting plate, a return spring and an oil pressure buffer; the third transmission module includes a lifting and pressing cylinder, a lifting and pressing connecting plate and a follower cylinder frame, and the lifting and pressing cylinder and the second cam expansion mechanism are connected through the lifting and pressing connecting plate; wherein, the return cylinder is installed on the follower cylinder frame, and the return spring is fixed to the follower expansion base plate through the return spring mounting screw.

[0017] In a possible implementation, the follow-up expansion assembly further includes a positioning mounting plate and positioning cam followers fixed on both sides of the positioning mounting plate, the positioning mounting plate is fixed to the follow-up expansion base plate, and the positioning cam followers are fitted with the positioning blocks.

[0018] In a possible implementation, both the active expanding suction plate and the follow-up expanding suction plate are provided with a vacuum channel, and a quick connector mounting hole is provided in the vacuum channel for connecting to an external vacuum device.

[0019] In one possible implementation, the pushing mechanism includes: a pushing plate, a screw module mounting plate, a screw linear module, a guide shaft, a lifting connecting block, a lifting cylinder and a floating joint; the screw linear module is mounted on the screw module mounting plate and is slidingly connected to the pushing plate, and the screw module mounting plate is fixed above the loading base plate through the guide shaft; the lifting connecting block is fixed to the bottom edge position of the screw module mounting plate, and the lifting cylinder is fixed to the lower surface of the loading base plate, and the driving rod of the lifting cylinder passes through the loading base plate and is connected to the lifting connecting block through a floating joint, thereby driving the screw module mounting plate to rise or fall along the guide shaft.

[0020] In one possible implementation, the pressing mechanism includes: a pressing plate, a pressing cylinder, a pressing cylinder frame and a pressing support frame; the pressing cylinder frame is fixed to the loading base plate through the pressing support frame, the pressing cylinder is fixed on the pressing cylinder frame, and the pressing plate is installed on the pressing support frame; the pressing cylinder moves to push the pressing plate to press the battery cell.

[0021] In one possible implementation, the flexible component battery cell crack and expansion device also includes: a material picking and placing component, which includes a module bracket, a transverse material picking module, a picking and placing lifting module, a material placement platform and a material placement transverse module; the transverse material picking module is fixed on the module bracket and connected to the picking and placing lifting module through a connecting plate; the picking and placing lifting module is connected to a picking and placing suction plate; the picking and placing suction plate moves the small battery cells separated at equal intervals to the material placement platform through the picking and placing lifting module and the transverse material picking module.

[0022] In a second aspect, the present invention further provides a method for expanding the distance of a cracked cell sheet of a flexible module, which is performed based on the expansion device as described in the first aspect, and the expansion method includes:

[0023] S100, placing a battery cell on a pusher assembly, wherein the battery cell has been split into multiple small battery cells connected to each other by adhesive;

[0024] S200, the pushing assembly pushes the battery cell to place the outermost row of small battery cells between the active distance expansion assembly and the follow-up distance expansion assembly;

[0025] S300, the pressing mechanism presses another row of small battery cells adjacent to the outermost row of small battery cells;

[0026] S400, multiple active expansion suction plates and multiple follow-up expansion suction plates respectively absorb and press the outermost row of small battery cells;

[0027] S500, multiple active distance expansion suction plates move synchronously along a first direction to pull the outermost row of small battery cells off the battery cell;

[0028] S600: The first cam expansion mechanism drives the multiple active expansion suction plates to separate from each other along the second direction to separate the outermost row of small battery cells at equal intervals;

[0029] S700: The active expansion component sends the battery cells to the pick-up and place component. The active expansion suction plate breaks the vacuum. At the same time, the pick-up and place suction plate absorbs the battery cells through vacuum and places the first row of battery cells on the placement platform.

[0030] S800, repeat the above S200 to S700 until the entire battery cell is expanded and placed on the material placement platform.

[0031] The embodiments of the present invention have at least the following technical effects:

[0032] The flexible component cell splitting and spacing device provided by the present invention uses a cam spacing component to separate the semi-broken cell sheets by pulling at equal intervals, which can achieve precise breaking of the adhesion point position, thereby achieving neat, controllable, and equally spaced arrangement of the cell sheets. Compared with strong mechanical cutting or other breaking methods, the splitting pulling method adopted by the present invention is softer and can effectively reduce the risk of secondary damage such as microcracks and edge collapse, and maintain the integrity of the cell and the stability of the electrical performance. Furthermore, through the drive with a high-precision screw servo motor, standardized, highly repeatable and highly consistent spacing operations can be achieved in the production process, and the spacing adjustment required for different product specifications can be achieved according to demand, thereby enhancing the adaptability of the device and the flexibility of the production line.

[0033] Furthermore, through the coordinated cooperation of key mechanisms such as the loading assembly, active expansion assembly, follower expansion assembly, and loading and unloading assembly, the present invention achieves simultaneous lateral and longitudinal expansion of flexible solar panel cells within a single process, effectively overcoming the lengthy and inefficient process associated with the step-by-step process required by traditional technologies. The entire expansion device boasts a compact layout and rational structural design, making it easy to integrate and deploy on existing production lines, occupying a small footprint and suitable for large-scale production applications.

[0034] Furthermore, the cam-type expansion mechanism within the active and follower expansion assemblies enables efficient control of the lateral expansion of the cells. The coordinated operation of symmetrically inclined grooves, cam followers, and a third transmission module enables precise adjustment and stable control of the cell row spacing, ensuring the precise positioning of each cell during the arrangement process and preventing expansion errors from affecting subsequent welding or packaging quality. The active and follower expansion assemblies separate the outermost row of small cells from the adjacent row, which is held in place by a pressure plate. After lateral expansion, the cells are then placed onto a loading platform at a specific spacing, achieving longitudinal expansion. The overall device allows for flexible configuration of expansion parameters based on the design requirements of the flexible module product, adapting to the diverse spacing requirements of different module specifications. The device boasts excellent adjustability and versatility, making it suitable for arranging flexible solar cells of various types and sizes. This significantly improves production efficiency while enhancing product consistency, offering broad practical value and promising industrial applications.

[0035] Furthermore, when the main and follower expansion assemblies compress the cell, the mutual engagement of the guide sleeve and guide post ensures consistent movement of the main and follower expansion assemblies, preventing deviation during expansion, thereby improving the synchronization and stability of the compression process. At the same time, the mutual engagement of the positioning block and the positioning cam follower provides stable guiding support during the cell breaking or separation process, ensuring positional accuracy during operation, preventing deviation, and further improving the overall stability and operational reliability of the expansion process.

[0036] The present invention also provides a method for splitting and expanding the spacing of flexible component cells. By adopting a "horizontal and vertical cross-type" expansion method, the split cell cells can achieve synchronous horizontal and vertical cross-expansion in the same process. That is, the outermost row of small cell cells is clamped by active and follow-up expansion components, and with the cooperation of the pressure plate, it is separated from the adjacent row of small cell cells and transferred to the loading platform. During the transfer process, the cam expansion mechanism is used to expand the separated outermost row of small cell cells laterally. After each row of outermost small cell cells is separated and expanded laterally, they are placed on the loading platform according to a specific column spacing to complete all longitudinal expansion, thereby achieving "horizontal and vertical cross-type" expansion of the cell cells. Finally, the loading and transverse movement module transfers the entire cell to the subsequent process. The overall method process is simple in design and easy to implement. The device structure is compact and occupies little space. It is easy to integrate into the existing production line. The various mechanisms cooperate closely and operate stably. It can effectively reduce the error rate during operation and significantly improve the reliability and automation level of flexible solar module production.

[0037] Furthermore, in the method of expanding the distance of flexible module solar cells, a single-row expansion method is used for lateral expansion, that is, the expansion operation is performed row by row on a single row of cells. This not only effectively improves the positioning accuracy and arrangement consistency during the expansion process, but also facilitates parameter fine-tuning based on the layout requirements of different products, meeting diverse and personalized production needs. Compared with multi-row expansion, single-row expansion is also more convenient in terms of debugging, maintenance, and troubleshooting. In addition, because single-row expansion operates on a row of small cells, it has a relatively simple structure, requires fewer mechanisms, and has a lighter control system configuration, lower overall equipment cost, and takes up less space. While ensuring expansion accuracy, it also improves the versatility and flexibility of the system.

[0038] Furthermore, because the present invention uses tension to break the adhesive layer, the single-row expansion method ensures uniform stress distribution during the pulling process, ensuring that each small cell will not suffer from problems such as cell cracking, damage, or incomplete adhesive breakage due to uneven force, thereby ensuring the integrity and stability of the breakage process. In the single-row expansion mode, the expansion path and pulling rhythm of each row can be precisely controlled, so that the expansion action and the breakage action are closely coordinated, improving the consistency and flatness of the cell arrangement, ensuring the quality of the cell breakage, and thus improving the electrical performance of the cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the specific embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A schematic diagram of the overall structure of a flexible module battery sheet splitting and spacing device provided by an embodiment of the present invention;

[0041] Figure 2 A schematic structural diagram of a loading assembly provided in an embodiment of the present invention;

[0042] Figure 3 A schematic diagram of the structure of an active range-extending component provided by an embodiment of the present invention installed on a base;

[0043] Figure 4 The embodiment of the present invention provides Figure 3 A top view of

[0044] Figure 5 A schematic structural diagram of a follow-up extension assembly provided in an embodiment of the present invention;

[0045] Figure 6 A schematic structural diagram of a follow-up extension assembly provided in an embodiment of the present invention along a first direction;

[0046] Figure 7 The embodiment of the present invention provides Figure 3 A partial structural enlarged schematic diagram;

[0047] Figure 8 A schematic structural diagram of a material handling assembly provided in an embodiment of the present invention;

[0048] Figure 9 A schematic flow chart of a method for splitting and widening the distance of a flexible module cell provided in an embodiment of the present invention.

[0049] In the picture:

[0050] 1-Feeding assembly, 2-Active expansion assembly, 3-Follow-up expansion assembly, 4-Pick-up and place assembly, 5-Screw linear module, 6-Push plate, 7-Support column, 8-Lifting cylinder, 9-Floating joint, 10-Lifting connection block, 11-Guide shaft, 12-Pressing support frame, 13-Pressing plate, 14-Feeding base plate, 15-Pressing cylinder frame, 16-Pressing cylinder, 17-First guide sleeve, 18-Screw module installation Plate, 19-base, 20-transverse linear guide, 21-expansion mounting plate, 22-active expansion suction plate, 23-expansion linear guide, 24-bearing mounting plate, 25-bearing, 26-screw servo module, 27-nut mounting plate, 28-power mounting plate, 29-helical gear, 30-helical rack, 31-transverse power mounting plate, 32-transverse servo motor, 33-positioning block, 34-second guide sleeve, 35- Cam follower, 36-track plate, 361-guide groove; 37-track plate guide rail; 38-follow-up mounting bracket, 39-limit adjustment bolt, 40-oil pressure buffer, 41-follow-up expansion suction plate, 42-follow-up expansion base plate, 421-follow-up guide groove, 43-guide column, 44-reset spring mounting screw, 45-follow-up track plate, 46-reset spring, 47-follow-up traverse guide rail, 48-reset cylinder Mounting plate, 49-reset cylinder, 50-lifting and pressing cylinder, 51-lifting cylinder frame, 52-limiting mounting plate, 53-expanding guide rail, 54-positioning cam follower, 55-positioning mounting plate, 56-lifting and pressing connecting plate, 57-module connecting plate, 58-transverse material picking module, 59-module bracket, 60-pick-up and place lifting module, 61-pick-up and place suction plate, 62-material placement platform, 63-material placement transverse movement module. DETAILED DESCRIPTION

[0051] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the embodiments. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0052] Those skilled in the art will understand that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those skilled in the art in the art to which this invention belongs. It should also be understood that terms such as those defined in common dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art and, unless specifically defined as such, will not be interpreted in an idealized or overly formal sense.

[0053] It will be understood by those skilled in the art that, unless otherwise stated, the singular forms "a," "an," "said," and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present invention refers to the presence of the stated features, integers, steps, operations, elements, and / or components, but does not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. The term "and / or" used herein includes all or any unit and all combinations of one or more associated listed items.

[0054] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0055] 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 quantity of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0056] Research has found that the existing distance expansion process for flexible solar panels still has many limitations. When large-sized cells are split into small cells that adhere to each other, they will be further separated. The cells will be subjected to uneven force or inaccurate direction control, resulting in secondary breakage, edge collapse, or microcracks in the cells, further affecting the performance of the cells. In addition, the traditional distance expansion method usually adopts horizontal and vertical distance expansion step-by-step processing. Not only is the process cumbersome and the production efficiency low, it also takes up a lot of equipment space, making it difficult to meet the compactness and automation requirements of efficient production lines. In addition, most of the existing distance expansion devices are customized for specific module specifications, lack the ability to quickly adjust different distance expansion parameters, have poor adaptability, and are difficult to meet the production needs of diversified flexible module products.

[0057] Therefore, the embodiments of the present invention provide a flexible module battery cell splitting and spacing expansion device and spacing expansion method to solve the above-mentioned problems existing in the existing spacing expansion method.

[0058] like Figure 1 As shown, an embodiment of the present invention provides a flexible component cell splitting and spreading device for spreading cell spacing, which can achieve fast, accurate and automatic horizontal and vertical equal spacing of cell spacing, ensuring that the arrangement process is efficient, orderly and uniform, which not only significantly shortens the arrangement time and reduces the dependence on manual operation, thereby effectively reducing the time cost and labor cost in the production process; at the same time, through the efficient continuous operation mode, it greatly improves the arrangement efficiency and product consistency, which is particularly suitable for the large-scale and high-beat production needs of flexible components, and has good industrial application value and promotion prospects.

[0059] It should be noted that the flexible components of the embodiments of the present invention are solar cells. During the production process of the flexible components, in order to meet the requirements of flexibility and rollability, it is usually necessary to pre-process the large-sized solar cell into multiple small-sized cells. Therefore, before the distance expansion operation of the embodiments of the present invention, it is necessary to crack the large-sized cells, which are sequentially stacked with glass sheets, adhesive layers, and silicon wafers. The cells remain basically intact in structure and appear to be in an incompletely broken state. The various cell structural units are mainly connected by the intermediate adhesive layer. After the cracking process, it helps to maintain the overall arrangement, laying the foundation for a high-precision and high-efficiency distance expansion process.

[0060] In the embodiment of the present invention, the battery cells are arranged in a rectangular shape and have a size of 50mm×50mm. The battery cells are expanded using the flexible module battery cell splitting and expanding device of the embodiment of the present invention. However, the present invention is not limited to this. In other embodiments, the battery cells may have a size of 40mm×40mm or 30mm×30mm. The embodiment of the present invention does not specifically limit the size of the battery cells.

[0061] The flexible module cell sheet splitting and spacing device according to the embodiment of the present application is described in detail below.

[0062] In the first aspect, the present invention provides a flexible component battery sheet cracking and extending device, referring to Figure 1 The expansion device is sequentially provided with a loading component 1, an active expansion component 2, a follow-up expansion component 3 and a pick-up and discharge component 4 along the first direction. The battery cells that have not been broken after cracking are pulled apart in a single row, and the gap is further expanded with controllable spacing. After expansion, they are transported in a single row and arranged at a specific column spacing, thereby realizing the horizontal and vertical expansion of the flexible components.

[0063] Reference Figure 2 , Figure 2 The middle loading assembly 1 includes a loading base plate 14 and a pushing mechanism and a pressing mechanism mounted on the loading base plate 14. The pushing mechanism is used to push the battery cells to place the outermost row of small battery cells between the active distance expansion assembly 2 and the follower distance expansion assembly 3, and the pressing mechanism is used to press the other row of small battery cells adjacent to the outermost row of small battery cells.

[0064] Among them, the pushing mechanism includes: a pushing plate 6, a screw module mounting plate 18, a screw linear module 5, a guide shaft 11, a lifting connecting block 10, a lifting cylinder 8 and a floating joint 9; the screw linear module 5 is installed below the screw module mounting plate 18, the pushing plate 6 is connected to the slider on the screw linear module 5, and the screw module mounting plate 18 is fixed above the loading base plate 14 through the guide shaft 11; the lifting connecting block 10 is fixed to the bottom edge position of the screw module mounting plate 18, and the lifting cylinder 8 is fixed to the lower surface of the loading base plate 14. The driving rod of the lifting cylinder 8 passes through the loading base plate and is connected to the lifting connecting block 10 through the floating joint 9, thereby driving the screw module mounting plate 18 to rise or fall along the guide shaft 11 through the lifting cylinder 8.

[0065] Furthermore, the pressing mechanism includes: a pressing plate 13, a pressing cylinder 16, a pressing cylinder frame 15, and a pressing support frame 12; the pressing cylinder frame 15 is fixed to the loading base plate 14 through the pressing support frame 12, the pressing cylinder 16 is fixed to the pressing cylinder frame 15, and the pressing plate 13 is slidably installed on the pressing support frame 12 in the vertical direction; the pressing cylinder 16 is actuated, thereby pushing the pressing plate 13 to press the battery cell.

[0066] Furthermore, the loading assembly 1 also includes a support column 7, and the loading base plate 14 is fixed on the support column 7, so that the loading base plate 14 and other components are supported by the support column 7.

[0067] Optionally, the loading base plate 14 serves as the mounting platform for the loading assembly 1 and is made of high-strength aluminum alloy material, which is light, high-rigidity and has good vibration resistance, and can effectively resist the complex mechanical loads and impact forces during the expansion process.

[0068] A guide groove is provided on the loading base plate 14, and the battery cell after splitting is placed in the guide groove. The lifting cylinder 8 retracts, and the screw linear module 5 drives the push plate 6 to move, pushing the battery cell to between the active expansion component 2 and the follower expansion component 3. The present invention adopts a screw linear module 5 for pushing. The device has sufficient mechanical rigidity and motion stability, and can effectively withstand the impact force and vibration generated by operations such as pulling the battery cell apart during the expansion process, and avoid position deviation caused by component deformation or vibration. In addition, through the precision control servo system combined with the high-precision screw transmission mechanism, the battery cell feeding position can be accurately adjusted and repeatedly positioned, and its running distance is set according to the size of the battery cell and the expansion requirements to ensure that the pushing stroke is accurate and stable. During the pushing process, the push plate 6 is driven by the screw linear module 5 to move in a straight line along a predetermined path to feed the battery cell into the pressing position.

[0069] At this time, the pressing cylinder 16 is activated to push the pressing plate 13 to press the other row of small battery cells adjacent to the outermost row of small battery cells, that is, to press the main body of the battery cell to prevent the battery cell from slipping, dislocation or incomplete breakage during the force application process, while ensuring the accuracy of the direction of the battery cell breakage during the pulling process. Furthermore, the pressing plate 13 is preferably made of aluminum, which can provide a stable and reliable pressing force and has a certain buffering performance to avoid mechanical damage to the battery cell. To improve the pressing effect and the adaptability of the battery cell, a flexible wear-resistant silicone layer or an adjustable elastic mechanism can be provided on the bottom surface of the pressing plate 13 to adapt to different battery cells, enhance the clamping stability, and reduce damage to the battery cell to avoid affecting the battery performance.

[0070] Combine Figure 3 and Figure 4 As shown, the active expansion assembly 2 includes: a first transmission module mounted on a base 19 , an expansion mounting plate 21 , a plurality of active expansion suction plates 22 , and a first cam expansion mechanism connected to the plurality of active expansion suction plates 22 .

[0071] Specifically, the plurality of active expansion suction plates 22 and the first cam expansion mechanism can be driven by the first transmission module along the first direction ( Figure 3 the first transmission module is connected to the first cam expansion mechanism in transmission, thereby driving the first cam expansion mechanism to move.

[0072] The first transmission module specifically includes: a transverse linear guide 20 installed on the base 19, and two transverse linear guides 20 are provided, and are distributed in parallel and spaced on both sides below the expansion mounting plate 21; the first transmission module also includes a transverse servo motor 32, a transverse force mounting plate 31, and a bevel rack 30. The transverse servo motor 32 is installed on the transverse force mounting plate 31. The transverse force mounting plate 31 serves as a mounting bracket for the transverse servo motor 32 and is locked on the expansion mounting plate 21 through a connecting piece. A bevel gear 29 is provided at the bottom of the transverse servo motor 32, and the bevel gear 29 and the bevel rack 30 are engaged with each other. Through the transmission cooperation between the bevel gear 29 and the bevel rack 30, the entire expansion mounting plate 21 slides along the transverse linear guide 20.

[0073] The present invention uses multiple active expanding suction plates 22 to synchronously move along the first direction to pull the outermost row of small battery cells from the battery cell. Specifically, the first transmission module is used to drive the active expanding suction plates 22 and the first cam expanding mechanism to move along the first direction to separate the outermost row of small battery cells from the battery cell body, thereby achieving the pulling and breaking of the outermost row of small battery cells.

[0074] Specifically, the transverse servo motor 32, whose output shaft is connected to the bevel gear 29, is used to drive the bevel rack 30 meshing with it to move along the transverse linear guide 20. During operation, the transverse servo motor 32 is started according to the action instruction set by the system, and the first transmission module drives the first cam expansion mechanism together with the active expansion suction plate 22 to move along the first direction, and the first direction is the same as the moving direction of the pushing mechanism. At this time, the glass sheet and silicon wafer of the cracked battery cell have been broken through the early cracking process, and the middle adhesive layer still maintains a certain degree of adhesion. Since the other row of small battery cells adjacent to the outermost row of small battery cells are pressed and fixed by the pressing mechanism of the loading assembly 1, through the movement of the first transmission module, the outermost row of small battery cells are subjected to a pulling force away from the main battery cell, so that the adhesive layer is pulled apart along the pre-cracking direction under the action of the tension, thereby realizing the complete separation of the outermost row of small battery cells.

[0075] During this process, the adhesive layer fractures spontaneously through mechanical stretching, rather than relying on additional tool cutting or manual intervention. Compared to existing technologies, this significantly simplifies the process, reduces error accumulation and damage risks, and improves separation efficiency and accuracy. The breaking process is highly controlled, and precise pre-treatment ensures a consistent fracture path, avoiding damage to the cell that can occur with other methods. It also reduces defects like microcracks and burrs, effectively ensuring the structural integrity of the cell unit and battery performance.

[0076] Optionally, the first cam expansion mechanism includes a track plate 36, a second transmission module, a track plate guide rail 37, an expansion linear guide rail 23, and a cam follower 35. The track plate guide rail 37 and the expansion linear guide rail 23 are perpendicular to each other, and the expansion linear guide rail 23 is fixed to the expansion mounting plate 21; the active expansion suction plate 22 is fixed to the expansion mounting plate 21, the second transmission module is connected to the track plate 36, and a guide groove 361 is provided on the track plate 36, and a second guide sleeve 34 is provided at both ends of the track plate 36. A cam follower 35 is provided on the active expansion suction plate 22, and the cam follower 35 is in sliding cooperation with the guide groove 361. The cam follower 35 moves in the guide groove 361 as the track plate 36 moves. The track plate 36 is provided with a plurality of rows of guide grooves 361, the cross section of the guide groove 361 is a groove symmetrically inclined on both sides (the positive projection of the groove on the plane where the track plate 36 is located is "V" shaped), and the cross section inclination angle of the guide groove 361 gradually increases from the middle of the track plate 36 to both sides (the "V"-shaped angle on the track plate 36 gradually decreases from the middle to both sides). The guide groove 361 is used to guide the movement of the cam follower 35, and the expansion suction plate 22 expands to make the battery cells close together after separation to the required gap.

[0077] In the present invention, the first cam expansion mechanism drives the plurality of active expansion suction plates 22 along the second direction ( Figure 3 The width direction of the middle base 19 is separated from each other to separate the outermost row of small battery cells at equal intervals; a cam expansion mechanism is used to expand the single row of battery cells in a second direction, and the second direction is perpendicular to the first direction, that is, the outermost row of small battery cells is expanded laterally. The cam expansion mechanism guides the cam follower 35 to move evenly along a preset dispersion path through multiple rows of guide grooves, thereby achieving synchronous lateral expansion of a single row of battery cells. This expansion method controls the displacement of each cam follower 35 through the geometric path of the guide groove, ensuring that each small battery cell is expanded at equal intervals under the action of tension, without the need to individually control the moving unit of each battery cell. The method adopted by the present invention has the significant advantages of a simple transmission path, a compact structure, and good synchronization. The traditional expansion method not only has high requirements on the motor control system and cumbersome debugging, but also is prone to control errors between the battery cells, resulting in uneven spacing, misalignment and other problems, which seriously affect the arrangement quality.

[0078] In an embodiment of the present invention, multiple rows of guide slots 361 are used to control the motion path of the cam follower 35. Each guide slot 361 has a cross-section that is symmetrically inclined. The cross-sectional inclination angle of each guide slot 361 gradually increases from the center of the track plate 36 toward the sides, forming a gradient slot structure with a gentle center and steeper ends. Because the inclination angle of the guide slots 361 in the center of the track plate 36 is relatively small, the displacement of each cell is relatively small during the initial expansion phase. As the cell moves, the inclination angle gradually increases, and the lateral displacement between cells also increases. Due to the symmetry and continuity of the guide slot angle design, an evenly spaced arrangement is ultimately achieved. Compared to traditional expansion methods, this multi-row, gradually inclined guide slot structure achieves high-precision expansion, reduces the complexity of the equipment structure, and mitigates the problem of uneven arrangement caused by errors in multiple device executions. This further improves the stability of the arrangement process and the protection of the cell cells, thereby ensuring the electrical performance of the cell cells.

[0079] Optionally, the second transmission module specifically includes: a power mounting plate 28, a bearing mounting plate 24, a nut mounting plate 27, a screw servo module 26 and a nut, wherein the power mounting plate 28 and the bearing mounting plate 24 are respectively fixed on the same side of the expansion mounting plate 21; the screw servo module 26 is respectively fixed to the power mounting plate 28 and the bearing mounting plate 24, and the nut mounting plate 27 is installed on the screw of the screw servo module 26 and is fixed by the nut and the thread on the screw, thereby realizing power transmission.

[0080] Specifically, the lower end of the nut mounting plate 27 is fixedly connected to the track plate 36, and a nut structure that matches the screw in the screw servo module 26 is provided above it. The nut is tightly matched with the screw through the thread to form a stable mechanical transmission relationship. When the servo motor drives the screw to rotate, the nut mounting plate 27 moves linearly along the axial direction of the screw, thereby converting the rotational motion into a precisely controllable linear propulsion motion. This linear motion further serves as the driving mechanism of the first cam expansion mechanism, driving the expansion mounting plate 21 to move on the expansion linear guide 23, thereby driving the first cam expansion mechanism to move, thereby achieving equal spacing expansion of the battery cells. The screw servo drive system itself has the characteristics of high precision and high response. Combined with the rigid transmission of the nut mounting plate 27, it can ensure that the entire expansion mechanism runs smoothly and accurately. At the same time, in conjunction with the operation of the first cam expansion mechanism, it can achieve consistency in expansion of the battery cells and ensure the accuracy of repeated actions.

[0081] refer to Figures 5 to 7The follow-up expansion assembly 3 in the figure includes: a plurality of follow-up expansion suction plates 41 that can move along the first direction and the vertical direction, and a second cam expansion mechanism connected to the plurality of follow-up expansion suction plates 41; after the plurality of active expansion suction plates 22 adsorb the lower surface of the outermost row of small battery cells, the plurality of follow-up expansion suction plates 41 press and adsorb the upper surface of the outermost row of small battery cells.

[0082] Optionally, the second cam expansion mechanism includes: a follower expansion base plate 42, a follower track plate 45 and a follower transverse guide rail 47, the follower expansion suction plate 41 is fixed on the follower expansion base plate 42, the follower expansion base plate 42 is provided with a follower guide groove 421, and the follower expansion suction plate 41 is provided with a follower cam follower; the follower track plate 45 is arranged opposite to the track plate 36, and the follower guide groove 421 and the follower cam follower correspond to the guide groove 361 and the cam follower 35 of the first cam structure in position, and are identical or adapted in shape; guide columns 43 are respectively provided at both ends of the follower expansion base plate 42, and the guide column 43 and the second guide sleeve 34 fit together when pressed down to ensure that the active expansion component 2 and the follower expansion component 3 run synchronously.

[0083] Furthermore, the follower-expanding assembly 3 also includes a follower mounting frame 38, a third transmission module, and a spring return mechanism. The third transmission module is used to drive the second cam-expanding mechanism to rise and fall, thereby coordinating with the first cam-expanding mechanism and achieving synchronous operation in the first direction. The third transmission module specifically includes a follower cylinder frame, a lifting and holding cylinder 50, and a lifting and holding connecting plate 56. The lifting and holding cylinder 50 and the second cam-expanding mechanism are connected via the lifting and holding connecting plate 56.

[0084] Optionally, the spring return mechanism includes a return cylinder 49, a return cylinder mounting plate 48, a return spring 46 and an oil pressure buffer 40; wherein, the return cylinder 49 is installed on the follower cylinder frame, and the return spring 46 is fixed to the side of the follower expansion base plate 42 by the return spring mounting screw 44.

[0085] Specifically, the follow-up expansion assembly 3 is used to cooperate with the active expansion assembly 2 to compress and synchronously move the outermost row of small battery cells. Specifically, when the loading assembly 1 delivers the battery cells to the pressing position, the follow-up expansion suction plate 41 is pressed down by the lifting and pressing cylinder 50, cooperating with the active expansion suction plate 22 to accurately compress the outermost row of small battery cells. At this time, the precise cooperation between the guide column 43 and the second guide sleeve 34 ensures that the follow-up expansion suction plate 41 and the active expansion suction plate 22 maintain strict coaxial and directional movement during the expansion process, thereby ensuring that the battery cells do not deflect or angularly offset during the longitudinal expansion process, thereby improving overall stability and accuracy.

[0086] During the flexible assembly expansion process, the follower expansion assembly 3 and the active expansion assembly 2 work together to provide key auxiliary support and positioning control for the overall expansion system. The active expansion assembly 2 primarily drives the expansion, driving the first cam expansion mechanism via the first transmission module to pull the outermost row of battery cells. The follower expansion assembly 3 is located on the other side of the battery cell and is used to cooperate with the active expansion assembly 2 and the active expansion suction plate 22 to synchronously compress and passively move the outermost row of small battery cells, forming a clamping relationship with the active expansion suction plate 22 to achieve positioning and stabilization of the small battery cells.

[0087] After expansion is complete, to ensure that the follow-up expansion assembly 3 does not affect the subsequent process, reset springs 46 are installed on both sides of the follow-up expansion base plate 42. When the active expansion assembly 2 completes the lateral expansion of the first row of cells, the lifting and pressing cylinder 50 is immediately activated, and the second cam expansion mechanism rises, disengaging the small cells. At the same time, to enable the follow-up expansion assembly 3 to quickly return to its initial standby position in preparation for the expansion task of the next row of small cells, the reset cylinder 49 is immediately activated, driving the follow-up expansion assembly 3 to move and return to its initial standby position. This reset process has a compact structure and simple operation, ensuring the efficient cycle time of the system and stable operation, effectively avoiding human intervention, and improving the degree of automation of the overall expansion process and matching the production rhythm.

[0088] Through the third transmission device and the spring return mechanism, the follow-up expansion component 3 is reset after the lateral expansion is completed. The follow-up expansion component 3 not only successfully completes its compression and synchronous cooperation during the expansion process, but also realizes rapid evacuation and automatic return after the lateral expansion is completed, creating conditions for the next round of expansion tasks, greatly improving the operation efficiency of the entire line, equipment coordination, and the continuity and reliability of the flexible component production process.

[0089] Optionally, the active expansion assembly 2 further includes a positioning block 33, which is mounted on the expansion mounting plate 21; the follow-up expansion assembly 3 further includes a positioning mounting plate 55 and a positioning cam follower 54 fixed on both sides of the positioning mounting plate 55, the positioning mounting plate 55 is fixed on the follow-up expansion base plate 42, and the positioning cam follower 54 is fitted with the positioning block 33.

[0090] Furthermore, during the pulling of the small battery cells, the nesting of the positioning cam follower 54 and the positioning block 33 plays a key role in ensuring precise and stable movement. Specifically, the positioning cam follower 54 is arranged on both sides of the positioning mounting plate 55. Its shape precisely matches the positioning block 33, and the two can be firmly nested to achieve high-precision mechanical positioning. This effectively limits the horizontal and vertical degrees of freedom of the cam expansion mechanism, ensuring that the device can maintain stability during the battery cell pulling process, thereby preventing any form of offset, skew, or vibration. In addition, this nesting structure can also assist in alignment correction, reducing positional deviation after long-term operation of the mechanism, helping to extend the service life of the equipment and reduce maintenance frequency.

[0091] Optionally, both the active expanding suction plate 22 and the follow-up expanding suction plate 41 are provided with vacuum channels, and the vacuum channels are provided with quick connector mounting holes for connecting to an external vacuum device.

[0092] Specifically, in order to achieve stable adsorption and operation of the battery cells, the active expansion suction plate 22 and the follow-up expansion suction plate 41 are both provided with vacuum channels, and quick connector mounting holes are preset on the side or back of the suction plate to facilitate quick connection with an external vacuum device, thereby improving the adsorption efficiency of the battery cells and the stability of the adsorption force. Even during high-speed movement or pulling of the battery cells, it can effectively prevent the battery cells from slipping, flipping or unstable adsorption, thereby ensuring the expansion accuracy.

[0093] like Figure 8 As shown, the pick-up and unloading assembly 4 specifically includes: a module connecting plate 57, a transverse pick-up module 58, a module bracket 59, a pick-up and unloading lifting module 60, a pick-up and unloading suction plate 61, a material placement platform 62, and a material placement transverse shifting module 63. The transverse pick-up module 58 is fixed to the module bracket 59 and connected to the pick-up and unloading lifting module 60 via a connecting plate; the pick-up and unloading lifting module 60 is connected to the pick-up and unloading suction plate 61; the pick-up and unloading suction plate 61 moves the evenly spaced small battery cells to the material placement platform 62 through the pick-up and unloading lifting module 60 and the transverse pick-up module 58, and arranges them at a specific spacing.

[0094] Specifically, after the outermost row of small cells has completed its horizontally expanded arrangement, the transverse pick-up module 58 is activated, driving the attached pick-up and placement lift module 60 to move to the target position. This controls the pick-up and placement suction plate 61 to precisely absorb the cells. Once absorption is complete, the pick-up and placement lift module 60 lifts the suction plate. Simultaneously, driven by the transverse pick-up module 58, the cells are smoothly moved along a predetermined path and placed one by one on the placement platform 62 at a preset spacing. The entire process is smooth and accurate, effectively ensuring that the cells maintain consistent posture and neat arrangement during movement and placement.

[0095] When all the battery cells in this batch have been placed and picked up, the battery cells on the material placement platform 62 have been arranged according to the preset spacing. At this time, the material placement transverse movement module 63 is started, driving the arranged battery cells to be smoothly transferred to the downstream of the production line, providing orderly and accurate material input for subsequent film lamination, welding or packaging processes.

[0096] The flexible component cell splitting and spacing device provided by the present invention constructs an automated spacing system with compact structure, efficient operation and strong stability through precise coordination between the loading component 1, the active spacing component 2, the follow-up spacing component 3 and the material picking and placing component 4, thereby solving key problems in the prior art such as the difficulty in controlling the breakage of the adhesive layer and the unstable separation of the cell. Specifically, the loading component 1 first transports the pre-processed battery cell to the pressing position, and the active expansion component 2 undertakes the core task of expansion drive, using the first cam expansion mechanism, the active expansion suction plate 22 and the first transmission module and the second transmission module to achieve precise transverse and longitudinal stretching of the battery cell, ensuring that the glue layer of the crack is evenly stressed during the pulling process, thereby achieving controllable fracture. At the same time, the support of the transmission module ensures the accuracy of the expansion movement; the follow-up expansion component 3 cooperates with the active expansion component 2 to press and guide the movement of the battery cell. It is provided with a guide column 43 and a second guide sleeve 34 structure to ensure that the movement is synchronized and no offset occurs during the expansion process, greatly enhancing the stability and reliability of the expansion process; after the expansion is completed, the pick-up and discharge component 4 cooperates with the pick-up and discharge suction plate 61 and the pick-up and discharge lifting module 60 with the transverse material picking module 58 to accurately grab the transversely expanded battery cell and place it on the material placement platform 62 at a specific spacing to complete the longitudinal expansion, and then the transverse platform sends it to the next process.

[0097] The device's systematic design not only enables automated control of the entire process, from striped cell strips to widened cell arrangement, but also effectively addresses issues such as offset and fragmentation caused by uncontrolled adhesive breakage in traditional processes. Furthermore, the device supports multiple specifications, exhibits excellent versatility, and boasts a rational overall structural design, simple and efficient operation. It is suitable for high-volume, high-precision, and highly consistent production of flexible module cells, demonstrating significant application value and potential for widespread adoption.

[0098] Based on the same inventive concept, Figure 9 As shown, the present invention provides a flexible module battery sheet cracking and distance expansion method, which is applied to a distance expansion device for distance expansion. The distance expansion method includes the following steps:

[0099] S100, placing the battery cell on the pusher assembly, the battery cell has been split into multiple small battery cells connected to each other by adhesive.

[0100] S200: The pushing assembly pushes the battery cell to place the outermost row of small battery cells between the active distance expanding assembly and the follow-up distance expanding assembly.

[0101] S300 , the pressing mechanism presses another row of small battery cells adjacent to the outermost row of small battery cells.

[0102] Specifically, the pre-processed cells are placed in the guide grooves of the loading base plate 14. The push plate 6, under the action of the lead screw linear module 5, moves the cells in the first direction and places the outermost row of small cells between the active expansion assembly 2 and the follower expansion assembly 3. At this time, the pressure plate 13 descends, pressing the other row of small cells adjacent to the outermost row to stabilize them and prevent them from moving during the subsequent pulling process.

[0103] S400, multiple active expansion suction plates and multiple follow-up expansion suction plates respectively absorb and press the outermost row of small battery cells.

[0104] Specifically, the outermost row of small battery cells are pressed by the active expansion suction plate 22 and the follow-up expansion suction plate 41, and vacuum is drawn. By clamping the upper and lower surfaces of the battery cells, the row of small battery cells is ensured to be firmly adsorbed between the active expansion suction plate 22 and the follow-up expansion suction plate 41.

[0105] S500: Multiple active distance-extending suction plates move synchronously along a first direction to pull the outermost row of small battery cells off the battery cell.

[0106] Specifically, the active expanding suction plate 22 and the follower expanding suction plate 41 maintain synchronous operation through the cooperation structure of the guide column 43 and the second guide sleeve 34, ensuring the consistency of movement and precision control during the expanding process.

[0107] After the active expanding suction plate 22 and the follower expanding suction plate 41 complete clamping of the outermost row of small cells, the multiple active expanding suction plates 22, driven by the first transmission module, move synchronously in the first direction, applying a tensile force to the cell row, breaking the cell where it is connected to the main cell through the adhesive layer, thereby achieving cell fragmentation. Because the adjacent row of small cells is already firmly held in place by the pressing mechanism, the breaking process is precise and controlled, ensuring that the cell fragmentation process does not affect other areas of the battery.

[0108] S600: The first cam expansion mechanism drives the plurality of active expansion suction plates to separate from each other along the second direction so as to separate the outermost row of small battery cells at equal intervals.

[0109] The first direction and the second direction are perpendicular to each other, and the plurality of follow-up expanding suction plates 41 follow the plurality of active expanding suction plates 22 to move synchronously.

[0110] Specifically, after the breaking is completed, the first cam expansion mechanism is activated, driving the multiple active expansion suction plates 22 to separate from each other along the second direction, thereby expanding and arranging the outermost row of small battery cells at equal intervals along the transverse direction. At the same time, the multiple follow-up expansion suction plates 41 cooperate with the active expansion suction plates 22 to move synchronously, effectively avoiding offset or misalignment and ensuring the accuracy of expansion arrangement.

[0111] S700, the active expansion component sends the battery cells to the pick-up and place component, the active expansion suction plate breaks the vacuum, and at the same time the pick-up and place suction plates absorb the battery cells through vacuum, and place the first row of battery cells on the placement platform.

[0112] Specifically, after completing the horizontally spaced, evenly spaced arrangement, the active spacer assembly 2 delivers the row of cells to the corresponding pick-up and place assembly 4, breaking the vacuum and releasing the cells. At this point, the pick-up and place suction plate 61 begins vacuuming the small, laterally spaced cells. With the cooperation of the pick-up and place lift module 60 and the transverse pick-up module 58, the row of cells is accurately placed on the loading platform 62 at a specified spacing, completing the entire row arrangement.

[0113] S800 , repeating the above steps S200 to S700 until the entire battery cell is expanded and placed on the loading platform.

[0114] Specifically, by repeating the above steps, including feeding, pressing, breaking, expanding, transporting and placing, the entire battery cell can be separated and arranged in rows according to predetermined spacing requirements, thereby mass-producing small-size battery cell expanded-distance components that meet design requirements, with the advantages of high degree of automation, high arrangement accuracy, high efficiency and strong stability.

[0115] In the distance expansion method of the present invention, a "horizontal and vertical cross-type" distance expansion method is adopted, which realizes longitudinal breaking and lateral distance expansion of the battery cells in sequence in the same process, so that the battery cells of the flexible component can be accurately and orderly arranged at equal spacing. In this method, the active distance expansion component 2 and the follower distance expansion component 3 cooperate to clamp and break the row of small battery cells located on the outermost side, and with the cooperation of the pressing mechanism, separate them from the whole battery cell. Subsequently, the active distance expansion component 2 completes the horizontal equal spacing of the row of battery cells before the battery cells are transferred to the material placement platform 62, and then places them on the material placement platform 62 in sequence according to the set column spacing. As each row of battery cells completes the above operations in sequence, the longitudinal row separation, transverse column expansion, and longitudinal equal spacing arrangement of the whole battery cell are gradually realized, thereby completing the "horizontal and vertical cross-type" distance expansion of the entire component. This method has a reasonable structural design, efficient and stable operation process, and a high level of automation. It not only avoids the complex process and high error rate brought by the traditional two-step expansion method, but also greatly saves equipment space and is easy to integrate into the automated production line of flexible components. It has good practical value and promotion prospects.

[0116] Furthermore, in the flexible solar panel expansion process, a single-row expansion method combined with pulling and separating is used to expand the cell spacing. Compared with traditional multi-row synchronous expansion, single-row expansion emphasizes the gradual and orderly processing of a single row of small cells. This allows for clearer position control of each row of cells during the expansion process, resulting in a more precise expansion process. Furthermore, this method makes the expansion system structure lighter and more flexible, facilitating integration into production lines of varying specifications and further meeting diverse and personalized production needs.

[0117] Furthermore, the present invention uses a pulling method to separate the adhesive layer. This method uses tensile force to separate small cells that have cracked but not yet completely broken, and then further expands the distance, avoiding the problems of microcracks, damage, or incomplete fragmentation that may be caused by traditional mechanical cutting or other methods. Pull-type fracture is performed in a single-row mode, which can ensure uniform force direction and balanced force distribution, thereby improving fracture accuracy and avoiding the risk of damage caused by localized stress concentration. Each row is independently controlled to complete fracture and expansion, ensuring expansion quality and further improving the electrical performance of the final component.

[0118] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. A person of ordinary skill in the art can understand the specific meanings of the above terms in the present invention based on the specific circumstances. In the description of this specification, specific features, structures, materials, or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A device for splitting and expanding a cell sheet of a flexible module, wherein the cell sheet has been split into a plurality of small cells connected to each other by adhesive, characterized in that: The stripe expansion device comprises: a loading assembly, an active expansion assembly and a follow-up expansion assembly arranged on a base along a first direction; The loading assembly includes a pushing mechanism and a pressing mechanism, wherein the pushing mechanism is used to place the outermost row of small battery cells of the battery cell between the active expansion assembly and the follower expansion assembly, and the pressing mechanism is used to press the other row of small battery cells adjacent to the outermost row of small battery cells; The active expansion assembly includes a plurality of active expansion suction plates movable along a first direction, and a first cam expansion mechanism; the follow-up expansion assembly includes a plurality of follow-up expansion suction plates; the plurality of active expansion suction plates and the plurality of follow-up expansion suction plates are used to absorb and clamp both sides of an outermost row of small battery sheets, and synchronously move along the first direction to separate the outermost row of small battery sheets from the battery sheets; the first cam expansion mechanism is used to drive the plurality of active expansion suction plates to separate from each other along a second direction to expand the outermost row of small battery sheets along the second direction; wherein the first direction is the length direction of the base, and the second direction is the width direction of the base; The active expansion assembly further includes: a first transmission module and an expansion mounting plate; the first transmission module is fixed to the base, and is used to drive the expansion mounting plate to move along the first direction; a plurality of active expansion suction plates and the first cam expansion mechanism are all arranged on the expansion mounting plate; the first transmission module includes: two transverse linear guide rails, a transverse servo motor, a helical gear and a helical rack, the two transverse linear guide rails are distributed in parallel on both sides below the expansion mounting plate and are fixed to the base; the helical gear is installed on the transmission shaft of the transverse servo motor, and the helical gear and the helical rack are engaged with each other, thereby driving the expansion mounting plate to move along the first direction, and the first cam expansion mechanism includes: a track plate and a second transmission module; The second transmission module is connected to the track plate, and a plurality of guide grooves are provided on the track plate. A cam follower is provided on each of the active expansion suction plates, and each of the cam followers is slidably engaged with one of the guide grooves. The second transmission module is used to drive the track plate to move so that the cam followers move relative to each other in the guide grooves, thereby separating the plurality of active expansion suction plates from each other along the second direction.

2. The flexible module battery sheet cracking and spacing device according to claim 1, characterized in that: The follow-up expansion assembly also includes a second cam expansion mechanism, which is connected to the multiple follow-up expansion suction plates. The second cam expansion mechanism can move along the first direction and the vertical direction, and is used to cooperate with the first cam expansion mechanism to achieve expansion of the battery cell along the second direction.

3. The flexible module battery sheet cracking and spacing device according to claim 2, characterized in that: The cross section of the guide groove is a groove that is symmetrically inclined on both sides, and the inclination angle of the cross section of the guide groove gradually increases from the middle of the track plate toward both sides.

4. The flexible module battery sheet cracking and spacing device according to claim 2, characterized in that: The second transmission module includes: a power mounting plate, a bearing mounting plate, a nut mounting plate, a screw servo module and a nut, wherein the power mounting plate and the bearing mounting plate are respectively fixed to the same side of the distance expansion mounting plate; The screw servo module is fixed on the power mounting plate and the bearing mounting plate respectively. The nut mounting plate is installed on the screw of the screw servo module and is fixed by the nut and the thread on the screw. The lower end of the nut mounting plate is connected to the track plate.

5. The flexible module battery sheet cracking and distance expansion device according to claim 2, characterized in that: The first cam expansion mechanism further comprises: a track plate guide rail and an expansion linear guide rail; The track plate guide rail and the expansion linear guide rail are perpendicular to each other, the track plate moves along the first direction on the track plate guide rail, and the multiple active expansion suction plates are separated from each other along the second direction on the expansion linear guide rail.

6. The flexible module battery sheet cracking and spacing device according to claim 2, characterized in that: The second cam expansion mechanism includes a follower expansion base plate, a follower track plate and a follower transverse track; wherein the follower expansion suction plate is mounted on the follower expansion base plate, the follower track plate is provided with a follower guide groove, and the follower expansion suction plate is provided with a follower cam follower; The follower track plate is arranged opposite to the track plate, and the follower guide groove and the follower cam follower correspond in position to the guide groove and the cam follower on the first cam expansion mechanism; Guide columns are respectively provided at both ends of the follow-up expansion base plate, and the guide columns are used to fit together with the second guide sleeves on the track plate to enable the active expansion component and the follow-up expansion component to operate synchronously.

7. The flexible module battery sheet cracking and spacing device according to claim 6, characterized in that: The follow-up expansion assembly also includes a follow-up mounting frame, a third transmission module, and a spring return mechanism; wherein the third transmission module is used to drive the second cam expansion mechanism to rise and fall, so as to achieve cooperation with the first cam expansion mechanism and synchronous operation along the first direction.

8. The flexible module battery sheet cracking and spacing device according to claim 7, characterized in that: The spring return mechanism includes: a return cylinder, a return cylinder mounting plate, a return spring and an oil pressure buffer; The third transmission module includes a lifting and pressing cylinder, a lifting and pressing connecting plate and a follower cylinder frame, and the lifting and pressing cylinder and the second cam expansion mechanism are connected through the lifting and pressing connecting plate; wherein, the reset cylinder is installed on the follower cylinder frame, and the reset spring is fixed to the follower expansion base plate through the reset spring mounting screw.

9. The flexible module battery sheet cracking and spacing device according to claim 6, characterized in that: The follow-up expansion assembly also includes a positioning mounting plate and positioning cam followers fixed on both sides of the positioning mounting plate. The positioning mounting plate is fixed on the follow-up expansion base plate, and the positioning cam followers are sleeved with the positioning blocks.

10. The flexible module battery sheet cracking and spacing device according to claim 2, characterized in that: The active expansion suction plate and the follow-up expansion suction plate are both provided with a vacuum channel, and a quick connector mounting hole is provided in the vacuum channel for connecting an external vacuum device.

11. The flexible module cell splitting and spacing device according to any one of claims 2 to 9, characterized in that: The pushing mechanism includes: a pushing plate, a screw module mounting plate, a screw linear module, a guide shaft, a lifting connection block, a lifting cylinder and a floating joint; the pushing assembly also includes a loading base plate, and the pushing mechanism and the pressing mechanism are arranged on the loading base plate; The screw linear module is mounted on the screw module mounting plate and is slidably connected to the push plate. The screw module mounting plate is fixed above the loading base plate through the guide shaft. The lifting connecting block is fixed to the bottom edge of the screw module mounting plate, the lifting cylinder is fixed to the lower surface of the loading base plate, the driving rod of the lifting cylinder passes through the loading base plate, and is connected to the lifting connecting block through a floating joint, thereby driving the screw module mounting plate to rise or fall along the guide shaft.

12. The flexible module battery sheet cracking and distance expansion device according to claim 11, characterized in that: The pressing mechanism includes: a pressing plate, a pressing cylinder, a pressing cylinder frame and a pressing support frame; The pressing cylinder frame is fixed to the loading base plate through the pressing support frame, a pressing cylinder is fixed on the pressing cylinder frame, and the pressing plate is installed on the pressing support frame; the pressing cylinder moves to push the pressing plate to press the battery cell.

13. The flexible module battery sheet cracking and distance expansion device according to claim 11, characterized in that: Also includes: The material picking and placing assembly includes a module bracket, a transverse material picking module, a picking and placing lifting module, a material placement platform and a material placement transverse movement module; The transverse material picking module is fixed on the module bracket and connected to the pick-up and placement lifting module through a connecting plate; the pick-up and placement lifting module is connected to a pick-up and placement suction plate; the pick-up and placement suction plate moves the small battery cells separated at equal intervals to the material placement platform through the pick-up and placement lifting module and the transverse material picking module.

14. A method for increasing the distance between cracks and strips of a flexible module battery cell, characterized in that: The distance expansion method is performed based on the distance expansion device according to claim 13, and the distance expansion method includes: S100, placing a battery cell on a pusher assembly, wherein the battery cell has been split into multiple small battery cells connected to each other by adhesive; S200, the pushing assembly pushes the battery cell to place the outermost row of small battery cells between the active distance expansion assembly and the follow-up distance expansion assembly; S300, the pressing mechanism presses another row of small battery cells adjacent to the outermost row of small battery cells; S400, multiple active expansion suction plates and multiple follow-up expansion suction plates respectively absorb and press the outermost row of small battery cells; S500, multiple active distance expansion suction plates move synchronously along a first direction to pull the outermost row of small battery cells off the battery cell; S600: The first cam expansion mechanism drives the plurality of active expansion suction plates to separate from each other along the second direction so as to separate the outermost row of small battery cells at equal intervals. S700: The active expansion component sends the battery cells to the pick-up and place component. The active expansion suction plate breaks the vacuum. At the same time, the pick-up and place suction plate absorbs the battery cells through vacuum and places the first row of battery cells on the placement platform. S800, repeat the above S200 to S700 until the entire battery cell is expanded and placed on the material placement platform.

Images