A ring-shaped multi-station shaping and extending film laminating device and a solar cell production line

Abstract

The present invention discloses an annular multi-station shaping, expanding and laminating device and a solar cell production line, and relates to the field of flexible battery technology. The annular multi-station shaping, expanding and laminating device comprises a base and an annular transmission line, a loading mechanism, a shaping mechanism, a lateral expanding mechanism, a longitudinal expanding mechanism, a laminating mechanism and a unloading mechanism installed on the base. The annular transmission line comprises a plurality of movers, the loading mechanism is used to load a plurality of battery cells onto the movers, the shaping mechanism is used to push a plurality of battery cells together, the lateral expanding mechanism is used to suck up a plurality of battery cells and expand them with equal spacing in the lateral direction, the longitudinal expanding mechanism is used to suck up a plurality of battery cells and expand them with equal spacing in the longitudinal direction, the laminating mechanism is used to simultaneously bond a protective film to a plurality of battery cells to form an intermediate product, and the unloading mechanism is used to unload the intermediate product. The transfer step in the expansion process can be eliminated, the expansion efficiency can be improved, the production efficiency of flexible solar cells can be improved, and safety can be ensured.

Description

Technical Field

[0001] The present invention belongs to the technical field of flexible batteries, and in particular relates to an annular multi-station shaping and extending film pasting device and a solar cell production line. Background Art

[0002] At present, if you want to achieve flexible winding of solar cells, you need to first divide the large-sized cells into hundreds of small-sized cells, and then bond these small-sized cells to the flexible circuit board, and make the gaps between adjacent cells equal. Now, generally, multiple cells are bonded to the flexible circuit board one by one manually, so that multiple cells are arranged at equal intervals. However, this method is inefficient, time-consuming and labor-intensive, with high time and labor costs, and is not suitable for mass production. It is easy for the spacing between adjacent cells to be different, which affects the quality of flexible solar cells.

[0003] In this regard, patent CN118658934A invented an automated shaping, distance expansion and film pasting device for flexible solar cells. However, the inventors found that the device needs to transfer the cells multiple times during the distance expansion process (first transfer the multiple cells that have been shaped on the first turntable to the transfer table, and then transfer the multiple cells that have been horizontally expanded on the transfer table to the second turntable). Since small-sized cells are very fragile, they are easily broken if the suction force is too large, and they are easily dropped and production is stopped if the suction force is too small. Therefore, multiple transfers will directly reduce the distance expansion efficiency, thereby affecting the production efficiency of flexible solar cells, and the safety is poor.

[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 defect of the prior art that multiple cell transfers during the distance expansion process will directly reduce the distance expansion efficiency, and to provide an annular multi-station shaping, distance expansion and film pasting device and a solar cell production line. The annular multi-station shaping, distance expansion and film pasting device is through an annular transmission line including multiple movers, and a loading mechanism, a shaping mechanism, a lateral distance expansion mechanism, a longitudinal distance expansion mechanism, a film pasting mechanism and a unloading mechanism arranged in sequence along the conveying direction of the annular transmission line. It can eliminate the transfer step in the distance expansion process, improve the distance expansion efficiency, improve the production efficiency of flexible solar cells, and ensure safety.

[0006] In order to achieve the above-mentioned purpose, in a first aspect, the present invention provides an annular multi-station shaping, expanding and laminating device, comprising a base and an annular transmission line installed on the base, a loading mechanism, a shaping mechanism, a lateral expanding mechanism, a longitudinal expanding mechanism, a laminating mechanism and a unloading mechanism, wherein the loading mechanism, the shaping mechanism, the lateral expanding mechanism, the longitudinal expanding mechanism, the laminating mechanism and the unloading mechanism are arranged in sequence along the conveying direction of the annular transmission line, the annular transmission line comprises a plurality of movers, the loading mechanism is used to load a plurality of battery cells onto the movers, the shaping mechanism is used to push a plurality of battery cells together to eliminate the spacing between adjacent battery cells, the lateral expanding mechanism is used to suck up a plurality of battery cells and expand them lateraly with equal spacing, the longitudinal expanding mechanism is used to suck up a plurality of battery cells and expand them longitudinally with equal spacing, the laminating mechanism is used to simultaneously bond a protective film to a plurality of battery cells to form an intermediate product, and the unloading mechanism is used to unload the intermediate product.

[0007] Preferably, the annular transmission line is in the shape of a rectangular ring, the feeding mechanism and the longitudinal distance expanding mechanism are relatively arranged outside the two short sides of the rectangular ring formed by the annular transmission line, the shaping mechanism and the transverse distance expanding mechanism are both arranged outside one long side of the rectangular ring formed by the annular transmission line, and the film sticking mechanism and the unloading mechanism are both arranged outside the other long side of the rectangular ring formed by the annular transmission line.

[0008] Preferably, the number of the shaping mechanisms, the transverse distance expanding mechanisms and the longitudinal distance expanding mechanisms are all multiple, and the number of movers is six times the number of the shaping mechanisms.

[0009] Preferably, the annular multi-station shaping, expanding and laminating device also includes a rotary air pump mechanism and a plurality of vacuum suction cups. The rotary air pump mechanism is mounted on a base and is arranged in the annular transmission line. The loading mechanism, the shaping mechanism, the lateral expanding mechanism, the longitudinal expanding mechanism, the laminating mechanism and the unloading mechanism are all arranged outside the annular transmission line. Each vacuum suction cup is connected to a mover, and the plurality of vacuum suction cups are respectively connected to the rotary air pump mechanism through a plurality of groups of vacuum pipelines. The rotary air pump mechanism is used to rotate with the movement of the mover, and the vacuum suction cup is used to vacuum adsorb the battery cell under the action of the rotary air pump mechanism.

[0010] Preferably, the rotary air pump mechanism includes an air pump, a first driving member, a rotating shaft and a positioning cylinder. The first driving member is drivingly connected to the rotating shaft. The circumferential surface of the rotating shaft is provided with a plurality of annular grooves. The plurality of annular grooves are arranged in sequence along the axial direction of the rotating shaft. A vent is provided on the bottom wall of the annular groove. The rotating shaft is provided with a plurality of exhaust channels. The plurality of exhaust channels are staggered. One end of each exhaust channel is connected to a vent, and the other end is connected to a vacuum suction cup. The positioning cylinder is sleeved outside the rotating shaft and rotatably cooperates with the rotating shaft. The positioning cylinder is provided with a plurality of exhaust holes. Each exhaust hole is connected to an annular groove, and the plurality of exhaust holes are all connected to the air pump.

[0011] Preferably, the rotating shaft includes an axis body and a cone that are connected to each other, the positioning cylinder is sleeved outside the axis body, the annular groove and the exhaust channel are both arranged on the axis body, and the exhaust channel is extended along the axial direction of the axis body; a plurality of air holes are opened on the circumferential surface of the cone, and the plurality of air holes are distributed in an annular array, and each air hole is connected to an exhaust channel.

[0012] Preferably, a plurality of limit rings are arranged on the circumferential surface of the rotating shaft, and the plurality of limit rings are arranged in parallel and spaced along the axial direction of the rotating shaft, and an annular groove is formed between two adjacent limit rings; a plurality of matching rings are convexly provided on the inner wall of the positioning cylinder, and the plurality of matching rings are arranged in parallel and spaced along the axial direction of the positioning cylinder, and the matching rings are provided with matching grooves, and a sealing ring is arranged in the matching groove, and the limit rings are rotatably matched with the matching grooves.

[0013] Preferably, the rotary air pump mechanism also includes a flange and multiple air distribution joints. The flange is connected to the rotating shaft and is coaxially arranged with the rotating shaft. The multiple air distribution joints are distributed in a circular array and are all installed on the flange. One end of each air distribution joint is connected to an exhaust channel, and the other end is connected to a vacuum suction cup.

[0014] Preferably, the vacuum suction cup is provided with multiple exhaust joints, the multiple exhaust joints are arranged at intervals, the air distribution joint is provided with an air outlet and multiple air inlets, the air outlet is connected to the exhaust channel and is connected to multiple air inlets at the same time, and each air inlet is connected to an exhaust joint.

[0015] Preferably, the annular transmission line also includes an annular carrier frame, a second driving member, a driving wheel, a transmission belt and a driven wheel. The mover is provided with a rolling wheel, the rolling wheel and the annular carrier frame are rollingly matched, the second driving member is transmission-connected to the driving wheel, the driving wheel is connected to the driven wheel through a transmission belt, and the mover is connected to the transmission belt.

[0016] Preferably, the annular multi-station shaping and expanding film laminating device also includes a positioning mechanism, which includes a driving assembly and a positioning block. The driving assembly is installed on the base and connected to the positioning block. The mover is provided with a limiting groove, and the driving assembly is used to drive the positioning block to cooperate with the limiting groove.

[0017] Preferably, the drive assembly includes a third drive member and a rotating shaft, the base is provided with a bearing seat, the third drive member is transmission-connected to the rotating shaft, the rotating shaft and the bearing seat are rotationally matched, and the positioning block is connected to the rotating shaft; and / or a positioning wheel is provided at the free end of the positioning block, and the positioning wheel cooperates with the limit groove.

[0018] Preferably, the shaping mechanism includes a fixed frame, a fourth driving member, a lifting seat, a limit plate and four push plate assemblies. The fixed frame is connected to the base, the fourth driving member is installed on the fixed frame and connected to the lifting seat, the limit plate is connected to the bottom of the lifting seat and is arranged above the mover in parallel and at intervals, the four push plate assemblies are distributed in a rectangular array and are all installed on the lifting seat, the fourth driving member is used to drive the limit plate to descend through the lifting seat, and the four push plate assemblies are used to push the multiple battery cells toward the middle so that the multiple battery cells are close to each other.

[0019] Preferably, the lateral expansion mechanism includes a carrier frame, a fifth driving member, a lifting platform, a sixth driving member, a camshaft and multiple slides. The fifth driving member is installed on the carrier frame and connected to the lifting platform. The sixth driving member is installed on the lifting platform and connected to the camshaft. The multiple slides are arranged side by side and all slides are slidably matched with the lifting platform in the axial direction of the camshaft. The circumferential surface of the camshaft is provided with multiple spiral grooves. The multiple spiral grooves are arranged in sequence at intervals in the axial direction of the camshaft and have different spiral angles. A matching rod is provided on one side of the slide and an expansion suction cup is provided on the other side. Each expansion suction cup is used for vacuum adsorbing a group of battery cells. Each matching rod is slidably matched with a spiral groove. The sixth driving member is used to drive the camshaft to rotate so that the multiple slides are separated at equal intervals.

[0020] Preferably, the film-laminating mechanism includes a mounting frame and a feeding roller, a stripping assembly, a lifting film-laminating assembly and a winding assembly mounted on the mounting frame. The feeding roller is used to feed the material roll so that the base film with multiple protective films bonded in sequence is connected to the winding assembly through the feeding stripping assembly. The lifting film-laminating assembly is arranged above the mover. The feeding stripping assembly is used to deliver a protective film to the bottom of the lifting film-laminating assembly through the base film. The lifting film-laminating assembly is used to descend and absorb the protective film. The feeding stripping assembly is also used to reset to make way for the lifting film-laminating assembly. The winding assembly is used to wind up the base film and separate the base film from the protective film absorbed by the lifting film-laminating assembly. The lifting film-laminating assembly is also used to descend and simultaneously bond the protective film to multiple battery cells.

[0021] Preferably, the film sticking mechanism further comprises a positioning plate and a seventh driving member, the positioning plate is connected to the base, the seventh driving member is mounted on the positioning plate and connected to the mounting frame, and the mounting frame is slidably matched with the positioning plate.

[0022] Preferably, the unloading mechanism includes a column, an eighth driving member, a translation plate, a ninth driving member, a lifting plate and a unloading suction cup, the column is connected to the base, the eighth driving member is installed on the column and connected to the translation plate, the ninth driving member is installed on the translation plate and connected to the lifting plate, the unloading suction cup is installed on the lifting plate, and the unloading suction cup is used to vacuum adsorb the intermediate product.

[0023] Preferably, the unloading mechanism also includes a tenth driving member and a cleaning brush, and the tenth driving member is installed on the lifting plate and connected to the cleaning brush.

[0024] In a second aspect, the present invention provides a solar cell production line, comprising the above-mentioned annular multi-station shaping and extending distance film pasting device.

[0025] Beneficial effects:

[0026] Through research, it is found that the existing shaping and extending film laminating device needs to transfer the battery cells multiple times during the extending process. Since the small-sized battery cells are very fragile, they are easy to break if the suction force is too large, and they are easy to drop and stop production if the suction force is too small. Therefore, multiple transfers will directly reduce the extending efficiency, thereby affecting the production efficiency of flexible solar cells, and the safety is poor. Based on this, further research is conducted and the present invention is proposed.

[0027] The present invention adopts the above-mentioned technical scheme, especially arranging multiple movers on the annular transmission line, and arranging a loading mechanism, a shaping mechanism, a lateral expanding mechanism, a longitudinal expanding mechanism, a film-laminating mechanism and a unloading mechanism in sequence along the conveying direction of the annular transmission line, so as to eliminate the transfer step in the expanding process, improve the expanding efficiency, improve the production efficiency of flexible solar cells, and ensure safety.

[0028] Specifically, by setting up multiple movers, the function of the circular transmission line driving multiple movers to move at the same time can be realized. In this way, the loading mechanism, the shaping mechanism, the lateral expanding mechanism, the longitudinal expanding mechanism, the film pasting mechanism and the unloading mechanism can perform corresponding operations on the battery cells on different movers at the same time, so as to realize multi-station simultaneous operation, effectively improve the shaping, expanding and film pasting efficiency, and multiple movers circulate on the circular transmission line with the same movement direction, which can improve the stability of the mover movement.

[0029] The solar cell production line of the present invention can eliminate the transfer step in the distance expansion process, improve the distance expansion efficiency, improve the production efficiency of flexible solar cells, and ensure safety. 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 structural diagram of a ring-shaped multi-station shaping and extending film laminating device provided in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of a rotary air pump mechanism in an annular multi-station shaping and extending film laminating device provided in an embodiment of the present invention;

[0033] Figure 3 for Figure 2 A cross-sectional view of the rotational cooperation between the middle rotation shaft and the positioning cylinder;

[0034] Figure 4 for Figure 2 A schematic diagram of the structure of the rotating shaft;

[0035] Figure 5 for Figure 2 A schematic diagram of the structure of the middle positioning cylinder;

[0036] Figure 6 A schematic diagram of the structure of an annular transmission line in an annular multi-station shaping and extending distance laminating device provided in an embodiment of the present invention;

[0037] Figure 7 A schematic diagram of the structure of the connection between the vacuum suction cup and the mover of the annular transmission line in the annular multi-station shaping and extending distance film laminating device provided in an embodiment of the present invention;

[0038] Figure 8 A schematic diagram of the structure of a shaping mechanism in an annular multi-station shaping and extending-distance film laminating device provided in an embodiment of the present invention;

[0039] Fig. 9 A schematic diagram of the structure of a lateral distance expansion mechanism in an annular multi-station shaping and distance expansion film laminating device provided in an embodiment of the present invention;

[0040] Fig.10 for Fig. 9 A schematic diagram of the structure in which the middle slide cooperates with the camshaft through a matching rod;

[0041] Fig.11 A schematic diagram of the structure of a film laminating mechanism in an annular multi-station shaping and extending film laminating device provided in an embodiment of the present invention;

[0042] Fig.12 A schematic diagram of the structure of the connection between the film laminating mechanism and the base in the annular multi-station shaping and extending distance film laminating device provided in an embodiment of the present invention;

[0043] Fig.13 A schematic structural diagram of a material unloading mechanism in an annular multi-station shaping and extending distance film laminating device provided in an embodiment of the present invention.

[0044] Description of reference numerals:

[0045] 100-annular multi-station shaping and extending film laminating device; 110-base; 111-bearing seat; 120-annular transmission line; 121-moving element; 1211-limiting groove; 1212-rolling wheel; 122-annular bearing frame; 123-second driving member; 124-driving wheel; 125-transmission belt; 126-driven wheel; 140-shaping mechanism; 141-fixed frame; 142-fourth driving member; 143-lifting seat; 144-limiting plate; 145-push plate assembly; 150-lateral extending mechanism; 15 1-carrying frame; 152-fifth driving member; 153-lifting platform; 154-sixth driving member; 155-camshaft; 1551-spiral groove; 156-slide; 157-matching rod; 158-extending suction cup; 160-longitudinal extending mechanism; 170-film pasting mechanism; 171-mounting frame; 172-feeding roller; 173-stripping assembly; 1731-stripping plate; 174-lifting film pasting assembly; 1741-film pasting plate; 1742-film pasting suction cup; 175-rewinding assembly; 176-bottom film; 17 7-protective film; 178-positioning plate; 179-seventh driving member; 180-rotating air pump mechanism; 182-first driving member; 183-rotating shaft; 1831-annular groove; 1832-vent hole; 1833-exhaust channel; 1834-shaft body; 1835-round table; 1836-air hole; 1837-limiting ring; 184-positioning cylinder; 1841-exhaust hole; 1842-matching ring; 1843-matching groove; 1844-sealing ring; 185-flange; 186-gas distribution joint; 1 861-air outlet; 1862-air inlet; 190-feeding mechanism; 191-column; 192-eighth driving member; 193-translation plate; 194-ninth driving member; 195-lifting plate; 196-feeding suction cup; 197-tenth driving member; 198-cleaning brush; 200-vacuum suction cup; 201-exhaust connector; 210-vacuum pipeline; 220-positioning mechanism; 221-driving assembly; 2211-third driving member; 2212-rotating shaft; 222-positioning block; 2221-positioning wheel. DETAILED DESCRIPTION

[0046] 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.

[0047] 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.

[0048] 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.

[0049] 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).

[0050] The inventors have found that the multiple vacuum suction cups on the first turntable and the second turntable in patent CN118658934A are directly connected to the vacuum pump through vacuum pipelines to achieve the vacuum adsorption function. This causes the multiple vacuum pipelines to easily become entangled, knotted and worn during the rotation of the first turntable and the second turntable, and may even interfere with other components, resulting in poor safety. It also causes the connection between the vacuum pipeline and the vacuum suction cup to be unstable, and the vacuum pipeline may fall off, affecting production efficiency.

[0051] Please refer to Figures 1 to 7 In the first aspect, the embodiment of the present invention provides a ring-shaped multi-station shaping, expanding and laminating device 100, which is used to shape, expand and laminate multiple solar cells. It can eliminate the transfer step in the expansion process, improve the expansion efficiency, improve the production efficiency of flexible solar cells, ensure safety, and prevent the vacuum pipeline 210 from entanglement, knotting, wear and external interference, improve the connection stability between the vacuum pipeline 210 and the vacuum suction cup 200, and ensure production efficiency.

[0052] It should be noted that in the production process of flexible solar cells, hundreds of small-sized cells need to be bonded to the protective film 177 to form an intermediate product, ensuring that there is an equal gap between adjacent cells, and then multiple cells are bonded to the flexible circuit board, and the protective film 177 is torn off to form a flexible solar cell. In this way, when the flexible solar cell needs to be used, the flexible circuit board is unfolded to achieve the flattening of multiple cells to increase the contact area between the cells and the sun, thereby realizing the photovoltaic power generation function of the flexible solar cell and ensuring the power generation efficiency; when the flexible solar cell 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 cells, the cells will not interfere with the rolling of the flexible circuit board, which is convenient for the storage of the flexible solar cell.

[0053] In this embodiment, the battery cells are arranged in a rectangular shape, and the size of the battery cells is 50mm*30mm. For such a small size and quantity of small pieces, it is obviously not suitable to use manual bonding (time-consuming and labor-intensive, with high time and labor costs, not suitable for mass production, and it is easy to have different spacings between adjacent battery cells, affecting the quality of flexible solar cells). Therefore, the annular multi-station shaping, expanding and film pasting device 100 of the present invention is used to shape, expand and film a plurality of battery cells. However, it is not limited to this. In other embodiments, the size of the battery cell may be 40mm*40mm, or 30mm*30mm, and the size of the battery cell is not specifically limited.

[0054] The annular multi-station shaping and expanding film laminating device 100 comprises a base 110, an annular transmission line 120, a feeding mechanism (not shown), a shaping mechanism 140, a lateral expanding mechanism 150, a longitudinal expanding mechanism 160, a laminating mechanism 170, a rotary air pump mechanism 180, a feeding mechanism 190 and a plurality of vacuum suction cups 200. The annular transmission line 120, the feeding mechanism, the shaping mechanism 140, the lateral expanding mechanism 150, the longitudinal expanding mechanism 160, the laminating mechanism 170, the rotary air pump mechanism 180 and the feeding mechanism 190 are all mounted on the base 110, and the base 110 is used to fix the annular transmission line 120, the feeding mechanism, the shaping mechanism 140, the lateral expanding mechanism 150, the longitudinal expanding mechanism 160, the laminating mechanism 170, the rotary air pump mechanism 180 and the feeding mechanism 190. The annular transmission line 120 includes a plurality of movers 121, each vacuum suction cup 200 is connected to a mover 121, and the annular transmission line 120 can drive the mover 121 to perform a circular motion, so as to synchronously drive the vacuum suction cup 200 to perform a circular motion. The plurality of vacuum suction cups 200 are respectively connected to the rotary air pump mechanism 180 through a plurality of sets of vacuum pipelines 210, and the rotary air pump mechanism 180 can suck out the air in the vacuum suction cup 200 through the vacuum pipeline 210 to realize the vacuum adsorption function of the vacuum suction cup 200. The rotary air pump mechanism 180 is arranged in the annular transmission line 120, and the rotary air pump mechanism 180 is used to rotate with the movement of the mover 121 to ensure the stability of the connection between the rotary air pump mechanism 180 and the vacuum suction cup 200 through the vacuum pipeline 210, thereby ensuring the stability of the vacuum adsorption. The loading mechanism, the shaping mechanism 140, the lateral expanding mechanism 150, the longitudinal expanding mechanism 160, the film pasting mechanism 170 and the unloading mechanism 190 are arranged outside the circular transmission line 120, and are arranged in sequence along the conveying direction of the circular transmission line 120 to prevent the vacuum pipeline 210 from interfering with the loading mechanism, the shaping mechanism 140, the lateral expanding mechanism 150, the longitudinal expanding mechanism 160, the film pasting mechanism 170 and the unloading mechanism 190 during movement. Specifically, the loading mechanism is used to load multiple battery cells onto the vacuum suction cup 200; the vacuum suction cup 200 is used to vacuum adsorb the battery cells under the action of the rotating air pump mechanism 180 to fix the position of the battery cells and prevent the battery cells from shifting relative to the vacuum suction cup 200; the shaping mechanism 140 is used to push the multiple battery cells together to eliminate the spacing between adjacent battery cells and achieve the shaping function; the lateral expansion mechanism 150 is used to suck up the multiple battery cells and expand them at equal intervals in the lateral direction to ensure that the multiple battery cells are distributed at equal intervals in the lateral direction after expansion; the longitudinal expansion mechanism 160 is used to suck up the multiple battery cells and expand them at equal intervals in the longitudinal direction to ensure that the multiple battery cells are distributed at equal intervals in the longitudinal direction after expansion; the film pasting mechanism 170 is used to simultaneously bond the protective film 177 to multiple battery cells to form an intermediate product; the unloading mechanism 190 is used to unload the intermediate product.

[0055] Specifically, the annular multi-station shaping and expanding film laminating device 100 has six stations, namely a loading station, a shaping station, a lateral expanding station, a longitudinal expanding station, a film laminating station and an unloading station. During the transportation process of the annular transmission line 120, the mover 121 will drive the vacuum suction cup 200 to pass through these six stations in sequence and cyclically. When the mover 121 drives the vacuum suction cup 200 to move to the loading station, the loading mechanism loads the battery cells to the vacuum suction cup 200; when the mover 121 drives the vacuum suction cup 200 to move to the shaping station, the shaping mechanism 140 pushes and shapes the multiple battery cells; when the mover 121 drives the vacuum suction cup 200 to move to the lateral expansion station, the lateral expansion mechanism 150 expands the multiple battery cells laterally with equal spacing; when the mover 121 drives the vacuum suction cup 200 to move to the longitudinal expansion station, the longitudinal expansion mechanism 160 expands the multiple battery cells longitudinally with equal spacing; when the mover 121 drives the vacuum suction cup 200 to the film pasting station, the film pasting mechanism 170 films the multiple battery cells to form intermediate products; when the mover 121 drives the vacuum suction cup 200 to the unloading station, the unloading mechanism 190 unloads the intermediate products.

[0056] In this embodiment, the annular transmission line 120 is in the shape of a rectangular ring, the feeding mechanism and the longitudinal distance expanding mechanism 160 are relatively arranged outside the two short sides of the rectangular ring formed by the annular transmission line 120, the shaping mechanism 140 and the transverse distance expanding mechanism 150 are both arranged outside one long side of the rectangular ring formed by the annular transmission line 120, and the film pasting mechanism 170 and the unloading mechanism 190 are both arranged outside the other long side of the rectangular ring formed by the annular transmission line 120, so as to realize the reasonable position distribution of the feeding mechanism, the shaping mechanism 140, the transverse distance expanding mechanism 150, the longitudinal distance expanding mechanism 160, the film pasting mechanism 170 and the unloading mechanism 190, and minimize the volume of the entire annular multi-station shaping and distance expanding film pasting device 100 while ensuring no mutual interference, so as to save equipment cost.

[0057] Specifically, there are multiple shaping mechanisms 140, lateral expanding mechanisms 150 and longitudinal expanding mechanisms 160. Multiple shaping mechanisms 140 can simultaneously shape the battery cells on multiple vacuum suction cups 200, multiple lateral expanding mechanisms 150 can simultaneously perform lateral expansion on the battery cells on multiple vacuum suction cups 200, and multiple longitudinal expanding mechanisms 160 can simultaneously perform longitudinal expansion on the battery cells on multiple vacuum suction cups 200, so as to further improve the shaping and expansion efficiency. Correspondingly, the number of movers 121 and vacuum suction cups 200 is six times the number of shaping mechanisms 140. While multiple shaping mechanisms 140 are simultaneously shaping multiple battery cells in the first part, multiple lateral expansion mechanisms 150 are simultaneously expanding the lateral distance of multiple battery cells in the second part, multiple longitudinal expansion mechanisms 160 are simultaneously expanding the longitudinal distance of multiple battery cells in the third part, the film-laminating mechanism 170 is laminating multiple battery cells in the fourth part, the unloading mechanism 190 is unloading multiple battery cells in the fifth part (intermediate products have been formed), and the loading mechanism is loading multiple battery cells in the sixth part.

[0058] In this embodiment, the number of the shaping mechanism 140, the lateral distance expansion mechanism 150 and the longitudinal distance expansion mechanism 160 are all two, the number of the movers 121 and the vacuum suction cups 200 are all twelve, the number of the vacuum pipelines 210 is twelve, the number of the film laminating mechanism 170 is one (to sequentially laminat the battery cells on the two vacuum suction cups 200), the number of the unloading mechanism 190 is one (to simultaneously unload the intermediate products on the two vacuum suction cups 200), and the number of the loading mechanism is one (to simultaneously load the battery cells on the two vacuum suction cups 200). However, it is not limited to this. In other embodiments, the number of the shaping mechanism 140, the lateral distance expansion mechanism 150 and the longitudinal distance expansion mechanism 160 can all be one or three, in which case the number of the movers 121 and the vacuum suction cups 200 are all six or eighteen, and the number of the shaping mechanism 140, the lateral distance expansion mechanism 150 and the longitudinal distance expansion mechanism 160 is not specifically limited.

[0059] The rotary air pump mechanism 180 includes an air pump, a first driving member 182, a rotating shaft 183 and a positioning cylinder 184. The first driving member 182 is mounted on the base 110 and is in transmission connection with the rotating shaft 183. The first driving member 182 is used to drive the rotating shaft 183 to rotate around its axial direction. The circumferential surface of the rotating shaft 183 is provided with a plurality of annular grooves 1831, and the plurality of annular grooves 1831 are sequentially arranged along the axial direction of the rotating shaft 183. The bottom wall of the annular groove 1831 is provided with a vent hole 1832, that is, the vent hole 1832 is connected with the annular groove 1831. The rotating shaft 183 is provided with a plurality of exhaust channels 1833, and the plurality of exhaust channels 1833 are staggered and independently arranged. One end of each exhaust channel 1833 is connected with a vent hole 1832, and the other end is connected with a vacuum suction cup 200 through a set of vacuum pipelines 210, so as to realize the connection between the vacuum suction cup 200 and the annular groove 1831.

[0060] Furthermore, the positioning cylinder 184 is fixedly connected to the base 110, and the positioning cylinder 184 is sleeved outside the rotating shaft 183 and rotates with the rotating shaft 183. The first driving member 182 can drive the rotating shaft 183 to rotate relative to the positioning cylinder 184. The positioning cylinder 184 is provided with a plurality of air extraction holes 1841, each of which is connected to an annular groove 1831, and the plurality of air extraction holes 1841 are connected to an air pump. The air pump is fixedly installed on the base 110, and the air pump can sequentially evacuate the vacuum suction cup 200 through the air extraction holes 1841, the annular groove 1831, the air vent 1832, the exhaust channel 1833 and the vacuum pipeline 210 to realize the vacuum adsorption function of the vacuum suction cup 200. Specifically, during the process of the air pump evacuating the vacuum suction cup 200, the first driving member 182 can drive the rotating shaft 183 to rotate relative to the positioning cylinder 184, so as to synchronously drive the vacuum pipeline 210 to move in the annular transmission line 120, so that the movement state of the vacuum pipeline 210 is consistent with that of the mover 121, thereby ensuring the stability of the connection between the vacuum pipeline 210 and the vacuum suction cup 200. During this process, the positioning cylinder 184 remains stationary, that is, the position of the exhaust hole 1841 remains unchanged, and the annular groove 1831 on the rotating shaft 183 always remains connected to the exhaust hole 1841.

[0061] Preferably, the rotating shaft 183 includes a shaft body 1834 and a truncated cone 1835 connected to each other. In this embodiment, the shaft body 1834 and the truncated cone 1835 are integrally formed to improve the connection strength. The positioning cylinder 184 is sleeved outside the shaft body 1834, the truncated cone 1835 is arranged above the positioning cylinder 184, and the annular groove 1831 and the exhaust channel 1833 are both arranged on the shaft body 1834, wherein the annular groove 1831 is arranged on the circumferential surface of the shaft body 1834, the exhaust channel 1833 is arranged inside the shaft body 1834, and the exhaust channel 1833 is extended along the axial direction of the shaft body 1834. A plurality of air holes 1836 are provided on the circumferential surface of the truncated cone 1835, and the plurality of air holes 1836 are distributed in a circular array, and each air hole 1836 is connected to an exhaust channel 1833, that is, one end of the exhaust hole is connected to the air hole 1836, and the other end is connected to the vent hole 1832.

[0062] Preferably, a plurality of stop rings 1837 are disposed on the circumference of the rotating shaft 183, and the plurality of stop rings 1837 are disposed in parallel and spaced apart along the axial direction of the rotating shaft 183, an annular groove 1831 is formed between two adjacent stop rings 1837, and each vent hole 1832 is disposed between two adjacent stop rings 1837. A plurality of matching rings 1842 are convexly disposed on the inner wall of the positioning cylinder 184, and the plurality of matching rings 1842 are disposed in parallel and spaced apart along the axial direction of the positioning cylinder 184, and each air extraction hole 1841 is disposed between two adjacent matching rings 1842. Specifically, the mating ring 1842 is provided with a mating groove 1843, and the limiting ring 1837 is rotatably matched with the mating groove 1843 to realize the function of rotating the rotating shaft 183 relative to the positioning cylinder 184, thereby ensuring the stability of the rotation process, and a sealing ring 1844 is arranged in the mating groove 1843 to improve the air tightness of the annular groove 1831, to prevent the annular groove 1831 from communicating with the outside world, thereby ensuring the vacuum effect of the rotating air pump mechanism 180.

[0063] Preferably, the rotary air pump mechanism 180 further includes a flange 185 and a plurality of air distribution joints 186. The flange 185 is connected to the rotating shaft 183 and is coaxially arranged with the rotating shaft 183. The flange 185 is arranged above the truncated table 1835 of the rotating shaft 183. The first driving member 182 can synchronously drive the flange 185 to rotate through the rotating shaft 183. The plurality of air distribution joints 186 are distributed in an annular array and are all installed on the flange 185. The position of each air distribution joint 186 corresponds to the position of an air hole 1836. One end of each air distribution joint 186 is connected to an exhaust channel 1833, and the other end is connected to a vacuum suction cup 200 through a group of vacuum pipelines 210 to realize the air distribution function, so that the rotary air pump mechanism 180 can simultaneously vacuum the vacuum suction cup 200 from multiple positions, improve the vacuuming efficiency, and ensure the vacuuming effect.

[0064] Further, the vacuum chuck 200 is provided with a plurality of exhaust connectors 201, and the plurality of exhaust connectors 201 are arranged at intervals. The gas distribution connector 186 is provided with an air outlet 1861 and a plurality of air inlets 1862, the air outlet 1861 is connected to the exhaust channel 1833 through the air hole 1836 of the truncated cone 1835, and is also connected to the plurality of air inlets 1862, and each air inlet 1862 is connected to an exhaust connector 201 through a vacuum pipeline 210 in each group. Specifically, during the process of the air pump evacuating the vacuum suction cup 200, the air in the vacuum suction cup 200 can simultaneously enter the multiple vacuum pipes 210 in each group from the multiple exhaust joints 201, and then enter the air distribution joint 186 through the multiple air inlets 1862, and then enter the air hole 1836, the exhaust channel 1833, the air vent 1832, the annular groove 1831 and the air extraction hole 1841 in turn through the air outlet 1861, and finally be sucked out to the outside by the air pump.

[0065] In this embodiment, the vacuum suction cup 200 is rectangular, and the number of exhaust joints 201 is three. The three exhaust joints 201 are respectively arranged on the three sides of the rectangle of the vacuum suction cup 200 (except for one side of the vacuum suction cup 200 away from the rotating air pump mechanism 180) to realize the gas separation function, so that the rotating air pump mechanism 180 can evacuate the vacuum suction cup 200 from three positions at the same time. Correspondingly, the number of each group of vacuum pipelines 210 is three. Under the suction action of the rotating air pump mechanism 180, the air in the vacuum suction cup 200 is divided into three paths and enters the three vacuum pipelines 210 from the three exhaust joints 201, respectively, so that the vacuuming efficiency is high and the vacuuming effect is good.

[0066] Preferably, the annular transmission line 120 further includes an annular carrier 122, a second driving member 123, a driving wheel 124, a transmission belt 125 and a driven wheel 126. The annular carrier 122 is connected to the base 110, and the base 110 is used to fix the position of the annular carrier 122. The mover 121 is provided with a rolling wheel 1212, and the rolling wheel 1212 is in rolling cooperation with the annular carrier 122. The rolling wheel 1212 can roll relative to the annular carrier 122, and the annular carrier 122 can support and limit the mover 121 through the rolling wheel 1212 to ensure the stability of the movement of the mover 121. Specifically, the second driving member 123 is connected to the driving wheel 124, the driving wheel 124 is connected to the driven wheel 126 through the transmission belt 125, the mover 121 is connected to the transmission belt 125, and the movement trajectory of the transmission belt 125 is the same as the contour of the annular carrier 122. The second driving member 123 can drive the driving wheel 124 to rotate, thereby driving the driven wheel 126 to rotate through the transmission belt 125. During this process, the transmission belt 125 synchronously drives the mover 121 to move, so that the mover 121 moves forward along the contour of the annular carrier 122, thereby driving the vacuum suction cup 200 to perform a cyclic annular motion.

[0067] Preferably, the annular multi-station shaping and widening film laminating device 100 further includes a positioning mechanism 220. The positioning mechanism 220 includes a driving component 221 and a positioning block 222. The driving component 221 is installed on the base 110 and connected to the positioning block 222. The driving component 221 is used to drive the positioning block 222 to move. Specifically, the mover 121 is provided with a limiting groove 1211, and the driving component 221 is used to drive the positioning block 222 to cooperate with the limiting groove 1211 to fix the relative position of the mover 121 and the base 110, thereby fixing the relative position of the vacuum suction cup 200 and the base 110.

[0068] In this embodiment, there are six positioning mechanisms 220. The first and second positioning mechanisms 220 are simultaneously arranged outside a long side of the rectangular ring of the ring transmission line 120, and correspond to the positions of the shaping mechanism 140 and the transverse distance expansion mechanism 150 respectively; the third and fourth positioning mechanisms 220 are simultaneously arranged outside the other long side of the rectangular ring of the ring transmission line 120, and correspond to the positions of the film pasting mechanism 170 and the unloading mechanism 190 respectively; the fifth positioning mechanism 220 is arranged outside a short side of the rectangular ring of the ring transmission line 120, and corresponds to the position of the loading mechanism; the sixth positioning mechanism 220 is arranged outside the other short side of the rectangular ring of the ring transmission line 120, and corresponds to the position of the longitudinal distance expansion mechanism 160. Specifically, the first positioning mechanism 220 is used to fix the mover 121 at the shaping station, the second positioning mechanism 220 is used to fix the mover 121 at the lateral expansion station, the third positioning mechanism 220 is used to fix the mover 121 at the film laminating station, the fourth positioning mechanism 220 is used to fix the mover 121 at the unloading station, the fifth positioning mechanism 220 is used to fix the mover 121 at the loading station, and the sixth positioning mechanism 220 is used to fix the mover 121 at the longitudinal expansion station.

[0069] Preferably, the driving assembly 221 includes a third driving member 2211 and a rotating shaft 2212. The base 110 is provided with a bearing seat 111, the third driving member 2211 is in transmission connection with the rotating shaft 2212, the rotating shaft 2212 is in rotational cooperation with the bearing seat 111, the positioning block 222 is connected to the rotating shaft 2212, and the third driving member 2211 is used to drive the rotating shaft 2212 to rotate relative to the bearing seat 111, so as to synchronously drive the positioning block 222 to rotate, so that the positioning block 222 extends into or retracts from the limiting groove 1211, thereby realizing the fixing and releasing functions of the mover 121, which is convenient and quick. In this embodiment, the number of movers 121 at any work station is two, the number of bearing seats 111 and the number of positioning blocks 222 are both two, one end of the rotating shaft 2212 is rotationally matched with one bearing seat 111, and the other end is rotationally matched with the other bearing seat 111, and the two positioning blocks 222 are relatively arranged at the two ends of the rotating shaft 2212, and the third driving member 2211 can simultaneously drive the two positioning blocks 222 to rotate through the rotating shaft 2212, so that the two positioning blocks 222 are simultaneously matched with the limiting grooves 1211 of the two movers 121 at the same work station, so as to simultaneously realize the fixation of the two movers 121 at the same work station, with high fixing efficiency and good fixing effect.

[0070] Preferably, a positioning wheel 2221 is provided at the free end of the positioning block 222 , and the positioning wheel 2221 cooperates with the limiting groove 1211 to reduce the friction between the positioning block 222 and the inner wall of the limiting groove 1211 , thereby improving the positioning accuracy.

[0071] Please refer to Figure 8 The shaping mechanism 140 includes a fixed frame 141, a fourth driving member 142, a lifting seat 143, a limit plate 144 and four push plate assemblies 145. The fixed frame 141 is connected to the base 110, the fourth driving member 142 is installed on the fixed frame 141 and connected to the lifting seat 143, the limit plate 144 is connected to the bottom of the lifting seat 143, and is arranged above the vacuum suction cup 200 in parallel and at intervals, the position of the limit plate 144 corresponds to the position of the vacuum suction cup 200, the fourth driving member 142 can drive the limit plate 144 to rise or fall through the lifting seat 143, so that the limit plate 144 is away from or close to the vacuum suction cup 200. The four push plate assemblies 145 are distributed in a rectangular array and are all installed on the lifting seat 143. The fourth driving member 142 is used to drive the limit plate 144 to rise or fall through the lifting seat 143, so that the four push plate assemblies 145 are away from or close to the vacuum suction cup 200.

[0072] Specifically, the fourth driving member 142 is used to drive the limiting plate 144 to descend through the lifting seat 143, so that a limiting gap is formed between the limiting plate 144 and the vacuum suction cup 200. The limiting gap is greater than the thickness of the battery cell and less than 2 times the thickness of the battery cell, that is, only one layer of battery cells can exist at any position in the limiting gap, so as to limit the battery cells and prevent the battery cells from stacking during the regularization process, thereby ensuring the regularization effect. The four push plate assemblies 145 are used to push multiple battery cells toward the middle of the limiting gap, so that the multiple battery cells are close to each other, the gaps between adjacent battery cells are eliminated, and the multiple battery cells are shaped and closed, so as to prevent the battery cells from being uneven, thereby realizing the automatic shaping of multiple battery cells, with high shaping efficiency and good shaping effect.

[0073] Furthermore, two push plate assemblies 145 are arranged relative to each other in the first direction, and the other two push plate assemblies 145 are arranged relative to each other in the second direction, and the first direction is perpendicular to the second direction. Specifically, the two push plate assemblies 145 are used to approach each other in the first direction to achieve the pushing and shaping of multiple battery cells in the first direction, and the other two push plate assemblies 145 are used to approach each other in the second direction to achieve the pushing and shaping of multiple battery cells in the second direction. Specifically, the four push plate assemblies 145 work together to make multiple battery cells move closer to the middle in the first direction and the second direction (horizontally and longitudinally) at the same time, thereby eliminating the gaps between adjacent battery cells, so that multiple battery cells are neatly assembled into a complete rectangle to complete the shaping operation.

[0074] Preferably, the push plate assembly 145 pushes the battery cell by driving the push plate to move within the limit gap by an electric cylinder. Specifically, the height of the push plate is less than the limit gap and greater than the thickness of the battery cell, so as to ensure that the abutment plate can move without interference within the limit gap, and to ensure the reliability of the abutment plate in pushing the battery cell to move, and to prevent the abutment plate from pushing empty space.

[0075] Please refer to Fig. 9 and Fig.10The lateral extension mechanism 150 includes a carrier 151, a fifth driving member 152, a lifting platform 153, a sixth driving member 154, a camshaft 155 and a plurality of slides 156. The carrier 151 is connected to the base 110, the fifth driving member 152 is mounted on the carrier 151 and connected to the lifting platform 153, and the fifth driving member 152 is used to drive the lifting platform 153 to rise or fall. The sixth driving member 154 is mounted on the lifting platform 153 and connected to the camshaft 155, and the sixth driving member 154 is used to drive the camshaft 155 to rotate. The plurality of slides 156 are arranged side by side along the third direction (the same as the axial direction of the camshaft 155), and all slide with the lifting platform 153 in the axial direction of the camshaft 155, and two adjacent slides 156 are arranged in close contact, that is, the slide 156 can slide relative to the lifting platform 153 along the third direction, and the lifting platform 153 can limit and guide the slide 156.

[0076] Furthermore, the circumferential surface of the camshaft 155 is provided with a plurality of spiral grooves 1551, and the plurality of spiral grooves 1551 are sequentially spaced in the axial direction of the camshaft 155, and the spiral angles are different. A matching rod 157 is provided on one side of the slide 156, and a distance expansion suction cup 158 is provided on the other side. Each matching rod 157 is slidably matched with a spiral groove 1551, and the matching rod 157 can slide relative to the spiral groove 1551, and the spiral groove 1551 can guide and limit the matching rod 157. Each distance expansion suction cup 158 is used for vacuum adsorption of a group of battery cells (a row or a column of battery cells), and each distance expansion suction cup 158 is provided with a plurality of suction holes, and the plurality of suction holes are sequentially spaced along the fourth direction, and the fourth direction is perpendicular to the third direction, and each suction hole is used for adsorbing a battery cell. Specifically, the fifth driving member 152 is used to drive the slide 156 to descend through the lifting platform 153 so that each expansion suction cup 158 can vacuum absorb a group of battery cells. The sixth driving member 154 is used to drive the camshaft 155 to rotate, so as to drive the slide 156 to slide along the third direction through the side wall of the spiral groove 1551. Since the spiral angles of the multiple spiral grooves 1551 are different, when the camshaft 155 rotates by the same angle, the sliding distances of the multiple slides 156 corresponding to the multiple spiral grooves 1551 in the first direction are different. By setting different spiral angles of the multiple spiral grooves 1551, the multiple slides 156 can be separated at equal intervals, thereby separating multiple groups of battery cells at equal intervals, and realizing automatic equal-interval expansion of multiple battery cells.

[0077] In this embodiment, the specific structure of the longitudinal expansion mechanism 160 is the same as the specific structure of the transverse expansion mechanism 150, except that the expansion direction is different, which will not be repeated here. Specifically, the multiple battery cells after shaping are distributed in a rectangular array, with multiple battery cells in each row and multiple battery cells in each column. The transverse expansion mechanism 150 is used to expand multiple columns of battery cells at equal intervals along the third direction (transverse direction) so that the spacing between two adjacent columns of battery cells is the same; after the transverse expansion is completed, the multiple battery cells are separated at equal intervals in the third direction, while the positions of the multiple battery cells in the fourth direction remain unchanged (still in a state of being close to each other); the longitudinal expansion mechanism 160 is used to expand multiple rows of battery cells at equal intervals along the fourth direction (longitudinal direction) so that the spacing between two adjacent rows of battery cells is the same; after the longitudinal expansion is completed, the multiple battery cells are separated at equal intervals in the third direction and at equal intervals in the fourth direction.

[0078] Please refer to Fig.11 The film laminating mechanism 170 includes a mounting frame 171, a material discharging roller 172, a material stripping assembly 173, a film lifting assembly 174 and a winding assembly 175 installed on the mounting frame 171. The material roll is wound outside the material discharging roller 172, and the material discharging roller 172 is used to discharge the material roll so that the bottom film 176 with multiple protective films 177 bonded thereto in sequence is connected to the winding assembly 175 through the material stripping assembly 173. The lifting film sticking assembly 174 is arranged above the vacuum suction cup 200, and the stripping assembly 173 is used to send a protective film 177 to the bottom of the lifting film sticking assembly 174 through the bottom film 176. At this time, the stripping assembly 173 is arranged between the lifting film sticking assembly 174 and the vacuum suction cup 200; the lifting film sticking assembly 174 is used to descend and absorb the protective film 177 to absorb and fix the protective film 177 on the lifting film sticking assembly 174; the stripping assembly 173 is also used to reset to make way for the lifting film sticking assembly 174, at this time, the stripping assembly 173 withdraws from between the lifting film sticking assembly 174 and the vacuum suction cup 200, at the same time, the winding assembly 175 is used to wind up the bottom film 176 and separate the bottom film 176 from the protective film 177 absorbed by the lifting film sticking assembly 174; the lifting film sticking assembly 174 is also used to descend and bond the protective film 177 to multiple battery cells at the same time to fix the relative positions of multiple battery cells to prevent the battery cells from moving.

[0079] Preferably, the stripping assembly 173 pushes the bottom film 176 by driving the stripping plate 1731 to move via the electric cylinder. Specifically, the free end of the stripping plate 1731 abuts against the bottom film 176, and the width direction of the stripping plate 1731 is the same as the width direction of the bottom film 176 and is perpendicular to the movement direction of the stripping plate 1731. Specifically, in the process of the electric cylinder driving the stripping plate 1731 to extend between the lifting film sticking assembly 174 and the vacuum suction cup 200, the stripping plate 1731 drives the bottom film 176 and the protective film 177 bonded thereto to move, and extends between the lifting film sticking assembly 174 and the vacuum suction cup 200, so that the position of one protective film 177 corresponds to the position of the lifting film sticking assembly 174. In this process, since the bottom film 176 is in a tensioned state, the reeling assembly 175 tightens the free end of the bottom film 176, so the unwinding roller 172 unwinds under the action of the tension to achieve the unwinding function. When the electric cylinder drives the stripping plate 1731 to withdraw from between the lifting film laminating assembly 174 and the vacuum suction cup 200, the stripping plate 1731 separates from the bottom film 176, and the unwinding roller 172 is no longer subjected to tension, and the bottom film 176 is rolled up under the action of the winding assembly 175 to separate the bottom film 176 from the protective film 177 sucked by the lifting film laminating assembly 174. After the winding is completed, the protective film 177 sucked by the lifting film laminating assembly 174 is completely separated from the bottom film 176, and the bottom film 176 is tensioned again and abuts against the stripping plate 1731 to facilitate the next film laminating.

[0080] Preferably, the lifting film sticking assembly 174 adheres the protective film 177 to the plurality of battery cells by driving the film sticking plate 1741 to move with an electric cylinder. Specifically, a film sticking suction cup 1742 is provided below the film sticking plate 1741. When the lifting film sticking assembly 174 sucks the protective film 177, the electric cylinder drives the film sticking plate 1741 to descend until the film sticking plate 1741 is attached to the stripping plate 1731. Thereafter, the film sticking suction cup 1742 is activated to vacuum-absorb the protective film 177 adhered to the base film 176 onto the bottom surface of the film sticking plate 1741. During the process of the lifting film sticking assembly 174 bonding the protective film 177 to multiple battery cells at the same time, the electric cylinder drives the film sticking plate 1741 to descend until the film sticking plate 1741 is in contact with the vacuum suction cup 200, so that the protective film 177 located on the bottom surface of the film sticking plate 1741 is bonded to multiple battery cells at the same time. Thereafter, the film sticking suction cup 1742 is closed, and the entire lifting film sticking assembly 174 is controlled to reset to facilitate the next film sticking.

[0081] Please refer to Fig.12Preferably, the film pasting mechanism 170 also includes a positioning plate 178 and a seventh driving member 179. The positioning plate 178 is connected to the base 110, the seventh driving member 179 is installed on the positioning plate 178, and is connected to the mounting frame 171, the mounting frame 171 and the positioning plate 178 are slidably matched, and the seventh driving member 179 is used to drive the mounting frame 171 to move relative to the positioning plate 178, thereby synchronously driving the unwinding roller 172, the stripping assembly 173, the lifting film pasting assembly 174 and the winding assembly 175 to move relative to the positioning plate 178. Specifically, the two vacuum suction cups 200 at the film pasting station are arranged in sequence along the driving direction of the seventh driving member 179, and the film pasting mechanism 170 can be displaced under the action of the seventh driving member 179 to sequentially perform film pasting operations on the battery cells on the two vacuum suction cups 200.

[0082] Please refer to Fig.13 The unloading mechanism 190 includes a column 191, an eighth driving member 192, a translation plate 193, a ninth driving member 194, a lifting plate 195 and an unloading suction cup 196. The column 191 is connected to the base 110. The column 191 is connected to the base 110. The eighth driving member 192 is mounted on the column 191 and connected to the translation plate 193. The eighth driving member 192 is used to drive the translation plate 193 to move. The ninth driving member 194 is mounted on the translation plate 193 and connected to the lifting plate 195. The ninth driving member 194 is used to drive the lifting plate 195 to rise or fall. The unloading suction cup 196 is mounted on the lifting plate 195. The unloading suction cup 196 is used to vacuum adsorb the intermediate product to adsorb the intermediate product to the bottom surface of the lifting plate 195, thereby facilitating the unloading function.

[0083] Preferably, the unloading mechanism 190 further includes a tenth driving member 197 and a cleaning brush 198. The tenth driving member 197 is mounted on the lifting plate 195 and connected to the cleaning brush 198, and the cleaning brush 198 is used to clean the vacuum suction cup 200. Specifically, during the unloading process, the ninth driving member 194 first drives the lifting plate 195 to descend until the unloading suction cup 196 fits with the intermediate product on the vacuum suction cup 200; then the vacuum suction cup 200 is closed, and the unloading suction cup 196 is started to adsorb the intermediate product to the bottom surface of the lifting plate 195; then the ninth driving member 194 drives the intermediate product to rise to a certain height through the lifting plate 195, and at the same time, the tenth driving member 197 drives the cleaning brush 198 to descend until the cleaning brush 198 fits with the upper surface of the vacuum suction cup 200; then the eighth driving member 192 drives the translation plate 193 to move outside the annular transmission line 120. During this process, on the one hand, the intermediate product can be unloaded through the lifting plate 195, and on the other hand, the upper surface of the vacuum suction cup 200 can be cleaned through the cleaning brush 198, thereby realizing the unloading function and the cleaning function at the same time, which is convenient and fast.

[0084] In this embodiment, the specific structure of the loading mechanism is the same as the specific structure of the unloading mechanism 190, and will not be repeated here.

[0085] Preferably, the first driving member 182, the second driving member 123 and the sixth driving member 154 are all driving motors, hydraulic motors or pneumatic motors, and the third driving member 2211, the fourth driving member 142, the fifth driving member 152, the seventh driving member 179, the eighth driving member 192, the ninth driving member 194 and the tenth driving member 197 are all cylinders, electric cylinders or hydraulic cylinders.

[0086] During the operation of the annular multi-station shaping and expanding film laminating device 100, first, the loading mechanism loads a plurality of battery cells onto the vacuum suction cup 200; then the annular transmission line 120 drives the vacuum suction cup 200 to move to the shaping station via the mover 121; then the shaping mechanism 140 pushes and shapes the plurality of battery cells on the vacuum suction cup 200; then the annular transmission line 120 drives the vacuum suction cup 200 to move to the lateral expansion station via the mover 121; then the lateral expansion mechanism 150 expands the plurality of battery cells on the vacuum suction cup 200 with equal spacing laterally; then the annular The transmission line 120 drives the vacuum chuck 200 to move to the longitudinal expansion station through the mover 121; then the longitudinal expansion mechanism 160 longitudinally expands the multiple battery cells on the vacuum chuck 200 with equal spacing; then the annular transmission line 120 drives the vacuum chuck 200 to move to the film pasting station through the mover 121; then the film pasting mechanism 170 films the multiple battery cells on the vacuum chuck 200 to form an intermediate product; then the annular transmission line 120 drives the vacuum chuck 200 to move to the unloading station through the mover 121; finally, the unloading unit unloads the intermediate product. This cycle is repeated to achieve the automated shaping, expansion and film pasting of multiple battery cells, with high production efficiency and good production effect, which is suitable for mass production.

[0087] In a second aspect, the present invention provides a solar cell production line for producing flexible solar cells, which includes the above-mentioned annular multi-station shaping and extending distance film pasting device 100.

[0088] The annular multi-station shaping, expanding and laminating device 100 provided in the embodiment of the present invention comprises a feeding mechanism, a shaping mechanism 140, a lateral expanding mechanism 150, a longitudinal expanding mechanism 160, a laminating mechanism 170 and a discharging mechanism 190 which are sequentially arranged along the conveying direction of the annular transmission line 120. The annular transmission line 120 comprises a plurality of movers 121. The feeding mechanism is used to feed a plurality of battery cells to the movers 121. The shaping mechanism 140 is used to push a plurality of battery cells together to eliminate the spacing between adjacent battery cells. The lateral expanding mechanism 150 is used to suck up a plurality of battery cells and expand them with equal spacing in the lateral direction. The longitudinal expanding mechanism 160 is used to suck up a plurality of battery cells and expand them with equal spacing in the longitudinal direction. The laminating mechanism 170 is used to simultaneously bond a protective film 177 to a plurality of battery cells to form an intermediate product. The discharging mechanism 190 is used to discharge the intermediate product. The transfer step in the expansion process can be eliminated, the expansion efficiency can be improved, the production efficiency of flexible solar cells can be improved, and the safety can be ensured. This makes the solar cell production line highly efficient and suitable for mass production.

[0089] Specifically, by setting up multiple movers 121, the function of the annular transmission line 120 driving multiple movers 121 to move at the same time can be realized. In this way, the loading mechanism, the shaping mechanism 140, the lateral expansion mechanism 150, the longitudinal expansion mechanism 160, the film pasting mechanism 170 and the unloading mechanism 190 can simultaneously perform corresponding operations on the battery cells on different movers 121, so as to realize multi-station simultaneous operation, effectively improve the shaping, expansion and film pasting efficiency, and multiple movers 121 circulate on the annular transmission line 120 with the same movement direction, which can improve the stability of the movement of the mover 121.

[0090] In addition, by connecting the vacuum suction cup 200 to the mover 121 of the annular transmission line 120, and setting a rotating air pump mechanism 180 in the annular transmission line 120, and making the rotating air pump mechanism 180 rotate with the movement of the mover 121, it can be ensured that the vacuum pipeline 210 will not interfere with the loading mechanism, shaping mechanism 140, lateral expansion mechanism 150, longitudinal expansion mechanism 160, film sticking mechanism 170 and unloading mechanism 190 located outside the annular transmission line 120 during the movement of the rotating air pump mechanism 180 and the vacuum suction cup 200. At the same time, the vacuum pipeline 210 is independent and suspended, which prevents the vacuum pipeline 210 from being entangled, knotted and worn, improves the connection stability between the vacuum pipeline 210 and the vacuum suction cup 200, and ensures production efficiency.

[0091] 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 ring-shaped multi-station shaping and extending film laminating device, characterized in that: The invention comprises a base and an annular transmission line, a feeding mechanism, a shaping mechanism, a lateral expansion mechanism, a longitudinal expansion mechanism, a film pasting mechanism and a feeding mechanism installed on the base, wherein the feeding mechanism, the shaping mechanism, the lateral expansion mechanism, the longitudinal expansion mechanism, the film pasting mechanism and the feeding mechanism are sequentially arranged along the conveying direction of the annular transmission line, the annular transmission line comprises a plurality of movers, the feeding mechanism is used to feed a plurality of battery cells to the movers, the shaping mechanism is used to push a plurality of battery cells together to eliminate the spacing between adjacent battery cells, the lateral expansion mechanism is used to suck up a plurality of battery cells and expand them lateraly with equal spacing, the longitudinal expansion mechanism is used to suck up a plurality of battery cells and expand them longitudinally with equal spacing, the film pasting mechanism is used to simultaneously bond a protective film to a plurality of battery cells to form an intermediate product, and the feeding mechanism is used to discharge the intermediate product; The annular multi-station shaping, expanding and laminating device further comprises a rotary air pump mechanism and a plurality of vacuum suction cups. The rotary air pump mechanism is mounted on the base and is arranged in the annular transmission line. The loading mechanism, the shaping mechanism, the lateral expanding mechanism, the longitudinal expanding mechanism, the laminating mechanism and the unloading mechanism are all arranged outside the annular transmission line. Each of the vacuum suction cups is connected to one of the movers. The plurality of vacuum suction cups are respectively connected to the rotary air pump mechanism through a plurality of groups of vacuum pipelines. The rotary air pump mechanism is used to rotate with the movement of the mover. The vacuum suction cup is used to vacuum adsorb the battery cell under the action of the rotary air pump mechanism. The rotary air pump mechanism comprises an air pump, a first driving member, a rotating shaft and a positioning cylinder, the first driving member is drivingly connected to the rotating shaft, a plurality of annular grooves are arranged on the circumference of the rotating shaft, the plurality of annular grooves are arranged in sequence along the axial direction of the rotating shaft, a vent hole is opened on the bottom wall of the annular groove, the rotating shaft is provided with a plurality of exhaust channels, the plurality of exhaust channels are staggered, one end of each exhaust channel is connected to one of the vent holes, and the other end is connected to one of the vacuum suction cups; The positioning cylinder is sleeved outside the rotating shaft and rotatably cooperates with the rotating shaft. The positioning cylinder is provided with a plurality of air extraction holes, each of which is connected to one of the annular grooves, and the plurality of air extraction holes are all connected to the air pump.

2. The annular multi-station shaping and extending film laminating device according to claim 1 is characterized in that: The annular transmission line is in the shape of a rectangular ring, the feeding mechanism and the longitudinal distance expanding mechanism are relatively arranged outside the two short sides of the rectangular ring formed by the annular transmission line, the shaping mechanism and the transverse distance expanding mechanism are both arranged outside one long side of the rectangular ring formed by the annular transmission line, and the film sticking mechanism and the unloading mechanism are both arranged outside the other long side of the rectangular ring formed by the annular transmission line.

3. The annular multi-station shaping and extending film laminating device according to claim 1 is characterized in that: The number of the shaping mechanisms, the lateral distance expanding mechanisms and the longitudinal distance expanding mechanisms are all multiple, and the number of the movers is six times the number of the shaping mechanisms.

4. The annular multi-station shaping and extending film laminating device according to claim 1 is characterized in that: The rotating shaft comprises a shaft body and a truncated cone connected to each other, the positioning cylinder is sleeved outside the shaft body, the annular groove and the exhaust passage are both arranged on the shaft body, and the exhaust passage is extended along the axial direction of the shaft body; A plurality of air holes are formed on the circumferential surface of the truncated cone. The plurality of air holes are distributed in a circular array, and each of the air holes is connected to one of the exhaust channels.

5. The annular multi-station shaping and extending film laminating device according to claim 1 is characterized in that: A plurality of limiting rings are arranged on the circumferential surface of the rotating shaft, and the plurality of limiting rings are arranged in parallel and spaced apart along the axial direction of the rotating shaft, and an annular groove is formed between two adjacent limiting rings; The inner wall of the positioning tube is convexly provided with a plurality of matching rings, which are arranged in parallel and spaced apart along the axial direction of the positioning tube. The matching rings are provided with matching grooves, in which sealing rings are arranged, and the limiting ring is rotatably matched with the matching grooves.

6. The annular multi-station shaping and extending film laminating device according to claim 1 is characterized in that: The rotary air pump mechanism also includes a flange and a plurality of air distribution joints, wherein the flange is connected to the rotating shaft and is coaxially arranged with the rotating shaft, the plurality of air distribution joints are distributed in a circular array and are all installed on the flange, one end of each of the air distribution joints is connected to one of the exhaust channels, and the other end is connected to one of the vacuum suction cups.

7. The annular multi-station shaping and extending film laminating device according to claim 6 is characterized in that: The vacuum suction cup is provided with multiple exhaust joints, and the multiple exhaust joints are arranged at intervals. The gas distribution joint is provided with an air outlet and multiple air inlets. The air outlet is connected to the exhaust channel and is simultaneously connected to the multiple air inlets, and each of the air inlets is connected to one exhaust joint.

8. The annular multi-station shaping and extending film laminating device according to claim 1 is characterized in that: The annular transmission line also includes an annular carrier frame, a second driving member, a driving wheel, a transmission belt and a driven wheel. The mover is provided with a rolling wheel, and the rolling wheel is in rolling cooperation with the annular carrier frame. The second driving member is connected to the driving wheel in a transmission manner, and the driving wheel is connected to the driven wheel through the transmission belt, and the mover is connected to the transmission belt.

9. The annular multi-station shaping and extending film laminating device according to claim 1, characterized in that: The annular multi-station shaping and expanding film laminating device also includes a positioning mechanism, which includes a driving assembly and a positioning block. The driving assembly is installed on the base and connected to the positioning block. The mover is provided with a limiting groove, and the driving assembly is used to drive the positioning block to cooperate with the limiting groove.

10. The annular multi-station shaping and extending film laminating device according to claim 9, characterized in that: The driving assembly includes a third driving member and a rotating shaft, the base is provided with a bearing seat, the third driving member is drivingly connected to the rotating shaft, the rotating shaft is rotationally matched with the bearing seat, and the positioning block is connected to the rotating shaft; And / or, a positioning wheel is provided at the free end of the positioning block, and the positioning wheel cooperates with the limiting groove.

11. The annular multi-station shaping and extending film laminating device according to claim 1, characterized in that: The shaping mechanism includes a fixed frame, a fourth driving member, a lifting seat, a limit plate and four push plate assemblies. The fixed frame is connected to the base, the fourth driving member is installed on the fixed frame and connected to the lifting seat, the limit plate is connected to the bottom of the lifting seat and is arranged above the mover in parallel and at intervals, the four push plate assemblies are distributed in a rectangular array and are all installed on the lifting seat, the fourth driving member is used to drive the limit plate to descend through the lifting seat, and the four push plate assemblies are used to push multiple battery cells toward the middle so that the multiple battery cells are close to each other.

12. The annular multi-station shaping and extending film laminating device according to claim 1, characterized in that: The lateral expansion mechanism includes a carrier frame, a fifth driving member, a lifting platform, a sixth driving member, a camshaft and a plurality of slides, the fifth driving member is installed on the carrier frame and connected to the lifting platform, the sixth driving member is installed on the lifting platform and connected to the camshaft, a plurality of slides are arranged side by side, and all of them are slidably matched with the lifting platform in the axial direction of the camshaft, a plurality of spiral grooves are provided on the circumferential surface of the camshaft, and the plurality of spiral grooves are arranged in sequence at intervals in the axial direction of the camshaft, and the spiral angles are different, a matching rod is provided on one side of the slide, and an expansion suction cup is provided on the other side, each of the expansion suction cups is used for vacuum adsorbing a group of battery cells, each of the matching rods is slidably matched with a spiral groove, and the sixth driving member is used to drive the camshaft to rotate so that the plurality of slides are separated at equal intervals.

13. The annular multi-station shaping and extending film laminating device according to claim 1, characterized in that: The film-sticking mechanism includes a mounting frame and a feeding roller, a stripping assembly, a lifting film-sticking assembly and a winding assembly mounted on the mounting frame. The feeding roller is used to feed the material roll so that the base film with multiple protective films bonded in sequence is connected to the winding assembly through the feeding stripping assembly. The lifting film-sticking assembly is arranged above the mover. The feeding stripping assembly is used to deliver one of the protective films to the bottom of the lifting film-sticking assembly through the base film. The lifting film-sticking assembly is used to descend and absorb the protective film. The feeding stripping assembly is also used to reset to make way for the lifting film-sticking assembly. The winding assembly is used to wind up the base film and separate the base film from the protective film absorbed by the lifting film-sticking assembly. The lifting film-sticking assembly is also used to descend and simultaneously adhere the protective film to multiple battery cells.

14. The annular multi-station shaping and extending film laminating device according to claim 13, characterized in that: The film sticking mechanism further comprises a positioning plate and a seventh driving member, wherein the positioning plate is connected to the base, the seventh driving member is mounted on the positioning plate and connected to the mounting frame, and the mounting frame is slidably matched with the positioning plate.

15. The annular multi-station shaping and extending film laminating device according to claim 1, characterized in that: The unloading mechanism includes a column, an eighth driving member, a translation plate, a ninth driving member, a lifting plate and a unloading suction cup, the column is connected to the base, the eighth driving member is installed on the column and connected to the translation plate, the ninth driving member is installed on the translation plate and connected to the lifting plate, the unloading suction cup is installed on the lifting plate, and the unloading suction cup is used for vacuum adsorption of the intermediate product.

16. The annular multi-station shaping and extending film laminating device according to claim 15, characterized in that: The unloading mechanism also includes a tenth driving member and a cleaning brush. The tenth driving member is installed on the lifting plate and connected to the cleaning brush.

17. A solar cell production line, characterized in that: It comprises the annular multi-station shaping and extending distance film pasting device as described in any one of claims 1 to 16.

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