A ring-shaped multi-station film breaking device and a flexible solar cell production line

Abstract

The present invention discloses an annular multi-station film breaking device and a flexible solar cell production line, and relates to the field of flexible battery technology. The annular multi-station film breaking device includes a frame, an annular conveyor line, a loading and unloading mechanism, a film breaking mechanism, a rotary suction mechanism and a plurality of vacuum suction cups. The annular conveyor line includes a plurality of movers, each vacuum suction cup is connected to a mover, and a plurality of vacuum suction cups are respectively connected to the rotary suction mechanism through a plurality of groups of vacuum pipelines, the rotary suction mechanism is arranged in the annular conveyor line, and the loading and unloading mechanism and the film breaking mechanism are arranged outside the annular conveyor line, and are arranged in sequence along the conveying direction of the annular conveyor line. The simultaneous action of the loading and unloading mechanism and the film breaking mechanism can be realized, and the breaking efficiency can be effectively improved. Moreover, the connection stability of the rotary suction mechanism and the vacuum suction cup on the mover through the vacuum pipeline can be ensured, and the vacuum pipeline can be prevented from falling off, and at the same time, the vacuum pipeline can be prevented from being entangled, knotted, worn and interfered with externally.

Description

Technical Field

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

[0002] At present, battery cell breaking is generally applied to large-size non-flexible batteries. The breaking method is usually to manually break the large battery into long strips, and then break the long strips into small pieces. This is time-consuming and labor-intensive, with low breaking efficiency and poor breaking effect. It has a low degree of automation and is not suitable for mass production. Moreover, this breaking method is only applicable to large-size non-flexible batteries (large-size non-flexible batteries have higher strength, lower toughness, and are easy to break), but not to back-contact flexible component battery cells (back-contact flexible component battery cells are smaller in size, higher in toughness, and not easy to break).

[0003] In this regard, patent CN118675985B invented an automated breaking device for back-contact flexible module battery cells, but the inventors found that the loading mechanism, breaking mechanism and unloading mechanism in the breaking device have a sequence of actions. During the loading process, the breaking mechanism and the unloading mechanism will not move, which leads to low breaking efficiency, and thus low battery production efficiency. In addition, the vacuum suction cup in the breaking device needs to be connected to the vacuum pump through a vacuum pipeline to achieve the vacuum adsorption function, and the vacuum suction cup needs to move back and forth during the loading and unloading and breaking process, which makes the vacuum pipeline easy to get entangled, knotted and worn during the movement of the vacuum suction cup, and even interfere with other parts, resulting in poor safety. It will also cause the connection between the vacuum pipeline and the vacuum suction cup to be unstable, and the vacuum pipeline may fall off, affecting the breaking efficiency.

[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 defects of the prior art that the actions of the loading mechanism, the breaking mechanism and the unloading mechanism have a sequential order, the breaking efficiency is low, and the vacuum pipeline is prone to entanglement, knotting and wear during the movement of the vacuum suction cup, and may even interfere with other components, resulting in poor safety. An annular multi-station film breaking device and a flexible solar cell production line are provided. The annular multi-station film breaking device can realize the simultaneous action of the loading and unloading mechanism and the film breaking mechanism through the vacuum suction cup connected to the mover of the annular transmission line, and the rotating suction mechanism arranged in the annular conveyor line and rotating with the movement of the mover, thereby effectively improving the breaking efficiency, and can ensure the connection stability of the rotating suction mechanism with the vacuum suction cup on the mover through the vacuum pipeline, prevent the vacuum pipeline from falling off, ensure the breaking efficiency, and at the same time avoid the entanglement, knotting, wear and external interference of the vacuum pipeline, thereby improving safety.

[0006] In order to achieve the above-mentioned objectives, in a first aspect, the present invention provides an annular multi-station coating breaking device, comprising a frame, an annular conveyor line, a loading and unloading mechanism, a coating breaking mechanism, a rotary suction mechanism and a plurality of vacuum suction cups, the annular conveyor line, the loading and unloading mechanism, the coating breaking mechanism and the rotary suction mechanism are all installed on the frame, the annular conveyor line comprises a plurality of movers, each vacuum suction cup is connected to a mover, and the plurality of vacuum suction cups are respectively connected to the rotary suction mechanism through a plurality of groups of vacuum pipelines, the rotary suction mechanism is arranged in the annular conveyor line, and the rotary suction mechanism is used to rotate with the movement of the mover, the loading and unloading mechanism and the coating breaking mechanism are arranged outside the annular conveyor line, and are arranged in sequence along the conveying direction of the annular conveyor line, the loading and unloading mechanism is used to load the battery cell to the vacuum suction cup, the vacuum suction cup is used to vacuum adsorb the battery cell under the action of the rotary suction mechanism, the coating breaking mechanism is used to coat and break the battery cell adsorbed on the vacuum suction cup, and the loading and unloading mechanism is also used to unload the battery cell after the breaking is completed.

[0007] Preferably, the rotary suction mechanism includes an air pump, a first driving member, a rotating shaft and a fixed 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 fixed cylinder is sleeved outside the rotating shaft and rotatably cooperates with the rotating shaft. The fixed cylinder is provided with a plurality of exhaust holes. Each exhaust hole is connected to an annular groove. The plurality of exhaust holes are all connected to the air pump.

[0008] Preferably, the rotating shaft includes an axis body and a cone that are connected to each other, the fixed sleeve is arranged 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 a circular array, and each air hole is connected to an exhaust channel.

[0009] Preferably, 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; a plurality of matching rings are convexly provided on the inner wall of the fixed cylinder, and the plurality of matching rings are arranged in parallel and spaced apart along the axial direction of the fixed cylinder, and the matching rings are provided with matching grooves, and a sealing ring is arranged in the matching groove, and the limiting rings are rotatably matched with the matching grooves.

[0010] Preferably, the rotary suction 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.

[0011] 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.

[0012] Preferably, the annular conveyor line also includes an annular support frame, a second driving member, a driving wheel, a transmission belt and a driven wheel. The mover is provided with a roller, the roller and the annular support 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.

[0013] Preferably, the annular multi-station coating breaking device also includes a positioning mechanism, which includes a driving assembly and a positioning block. The driving assembly is installed on the frame 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.

[0014] Preferably, the driving assembly includes a third driving member and a rotating shaft, the frame is provided with a bearing seat, the third driving 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 limiting groove.

[0015] Preferably, the loading and unloading mechanism includes a loading unit and a unloading unit, the coating breaking mechanism includes a transverse coating breaking unit and a longitudinal coating breaking unit, and the loading unit, the transverse coating breaking unit, the longitudinal coating breaking unit and the unloading unit are arranged in sequence along the conveying direction of the annular conveyor line.

[0016] Preferably, the annular conveyor line is in the shape of a rectangular ring, and the loading unit, the transverse coating and breaking unit, the longitudinal coating and breaking unit and the unloading unit are respectively arranged outside the four sides of the rectangular ring formed by the annular conveyor line.

[0017] Preferably, the number of the transverse coating breaking units and the number of the longitudinal coating breaking units are both multiple, and the number of movers and vacuum suction cups is four times the number of the transverse coating breaking units.

[0018] Preferably, the coating breaking mechanism includes a coating assembly and a breaking assembly, the coating assembly includes an isolation film and two lifting modules, the two lifting modules are installed on the frame and are arranged on both sides of the vacuum suction cup relatively, the isolation film is connected between the two lifting modules, the lifting modules are used to drive the isolation film to descend and cover the surface of the battery cell; the breaking assembly includes a breaking robot arm and a roller shaft, the breaking robot arm is installed on the frame and connected to the roller shaft, the breaking robot arm is used to drive the roller shaft to apply pressure to the battery cell covered with the isolation film to cause the battery cell to break.

[0019] Preferably, the lifting module includes a fourth driving member, a lifting seat, a mounting frame and a film winding shaft, the fourth driving member is connected to the lifting seat, the lifting seat is connected to the mounting frame, the film winding shaft is installed on the mounting frame, the isolation film portion is wound outside the film winding shaft, and the film winding shaft is used to tighten the isolation film.

[0020] Preferably, the breaking robot arm includes a fifth driving member, a lifting frame, a sixth driving member and a sliding frame, the fifth driving member is connected to the lifting frame, the fifth driving member is used to drive the lifting frame to lift and lower along the first direction, the sixth driving member is installed on the lifting frame and connected to the sliding frame, the sixth driving member is used to drive the sliding frame to move along the second direction, the roller shaft is connected to the sliding frame, and the first direction, the second direction and the axial direction of the roller shaft are perpendicular to each other.

[0021] Preferably, the loading and unloading mechanism includes a transfer robot arm and a transfer suction cup. The transfer robot arm is installed on the frame and connected to the transfer suction cup. The transfer suction cup is used to vacuum adsorb the battery cells.

[0022] In a second aspect, the present invention provides a flexible solar cell production line, comprising the above-mentioned annular multi-station coating breaking device.

[0023] Beneficial effects:

[0024] After research, it was found that the actions of the feeding mechanism, the breaking mechanism and the unloading mechanism in the existing breaking device have a sequence. During the feeding process, the breaking mechanism and the unloading mechanism will not move, which leads to low breaking efficiency, thereby making the battery production efficiency low; and the vacuum suction cup in the existing breaking device needs to be connected to the vacuum pump through a vacuum pipeline to realize the vacuum adsorption function, and the vacuum suction cup needs to move back and forth during the loading and unloading and breaking process, which causes the vacuum pipeline to be easily entangled and worn during the movement of the vacuum suction cup, and even interferes with other parts, resulting in poor safety. It will also cause the connection between the vacuum pipeline and the vacuum suction cup to be unstable, and the vacuum pipeline may fall off, affecting the breaking efficiency. Based on this, further research was conducted and the present invention was proposed.

[0025] The present invention adopts the above-mentioned technical scheme, especially connecting the vacuum suction cup to the mover of the annular transmission line, and arranging a rotary suction mechanism in the annular transmission line, and making the rotary suction mechanism rotate with the movement of the mover, so as to realize the simultaneous action of the loading and unloading mechanism and the film breaking mechanism, effectively improve the breaking efficiency, and ensure the connection stability of the rotary suction mechanism and the vacuum suction cup on the mover through the vacuum pipeline, prevent the vacuum pipeline from falling off, and ensure the breaking efficiency. At the same time, since the loading and unloading mechanism and the film breaking mechanism are arranged outside the annular transmission line, the vacuum pipeline will not interfere with the loading and unloading mechanism and the film breaking mechanism during the movement of the rotary suction mechanism and the vacuum suction cup. The vacuum pipelines are independent and suspended to avoid entanglement, knotting and wear of the vacuum pipelines, thereby effectively improving safety.

[0026] Specifically, by providing multiple movers and multiple vacuum suction cups, and connecting each vacuum suction cup to a mover, the function of the circular conveyor line driving multiple vacuum suction cups to move at the same time can be realized. In this way, when the loading and unloading mechanism is loading and unloading the battery cell on one vacuum suction cup, the coating and breaking mechanism can coat and break the battery cell on another vacuum suction cup, so as to realize simultaneous operation of multiple stations and effectively improve the breaking efficiency. In addition, multiple vacuum suction cups circulate on the circular conveyor line with multiple movers in the same direction of movement, which can improve the stability of the vacuum suction cup movement.

[0027] The flexible solar cell production line of the present invention can realize the simultaneous action of the loading and unloading mechanism and the coating breaking mechanism, effectively improve the breaking efficiency, and can ensure the connection stability of the rotating suction mechanism and the vacuum suction cup on the mover through the vacuum pipeline, prevent the vacuum pipeline from falling off, ensure the breaking efficiency, and at the same time avoid the entanglement, knotting, wear and external interference of the vacuum pipeline, thereby improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] 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.

[0029] Figure 1 A schematic structural diagram of an annular multi-station film breaking device provided in an embodiment of the present invention;

[0030] Figure 2 A schematic structural diagram of a rotary air suction mechanism in an annular multi-station film breaking device provided in an embodiment of the present invention;

[0031] Figure 3 for Figure 2 A cross-sectional view of the rotational cooperation between the middle rotating shaft and the fixed cylinder;

[0032] Figure 4 for Figure 2 Schematic diagram of the structure of the rotating shaft;

[0033] Figure 5 for Figure 2 A schematic diagram of the structure of the middle fixed cylinder;

[0034] Figure 6 A schematic diagram of the structure of an annular conveyor line in an annular multi-station film breaking device provided in an embodiment of the present invention;

[0035] Figure 7 A schematic diagram of the structure of the connection between the vacuum suction cup and the mover of the annular conveyor line in the annular multi-station film breaking device provided in an embodiment of the present invention;

[0036] Figure 8 A schematic structural diagram of a film assembly of a film breaking mechanism in an annular multi-station film breaking device provided in an embodiment of the present invention;

[0037] Fig. 9 A schematic diagram of the structure of a breaking component of a film breaking mechanism in an annular multi-station film breaking device provided in an embodiment of the present invention;

[0038] Fig.10 A schematic structural diagram of the loading and unloading mechanism in the annular multi-station film breaking device provided in an embodiment of the present invention.

[0039] Description of reference numerals:

[0040] 100-annular multi-station film breaking device; 110-frame; 111-bearing seat; 120-annular conveyor line; 121-moving element; 1211-limiting groove; 1212-roller; 122-annular support frame; 123-second driving member; 124-driving wheel; 125-transmission belt; 126-driven wheel; 130-loading and unloading mechanism; 131-loading unit; 132-unloading unit; 133-transporter Mechanical arm; 134-transport suction cup; 140-film breaking mechanism; 141-transverse film breaking unit; 142-longitudinal film breaking unit; 143-film assembly; 1431-isolation film; 1432-lifting module; 1433-fourth driving member; 1434-lifting seat; 1435-mounting frame; 1436-film winding shaft; 144-breaking assembly; 1441-breaking mechanical arm; 1442-roller shaft; 1 443-fifth driving member; 1444-lifting frame; 1445-sixth driving member; 1446-sliding frame; 150-rotating suction mechanism; 152-first driving member; 153-rotating shaft; 1531-annular groove; 1532-vent; 1533-exhaust channel; 1534-shaft body; 1535-round table; 1536-air hole; 1537-limiting ring; 154-fixing cylinder; 1541-exhaust Hole; 1542-matching ring; 1543-matching groove; 1544-sealing ring; 155-flange; 156-gas distribution joint; 1561-air outlet; 1562-air inlet; 160-vacuum suction cup; 161-exhaust joint; 170-vacuum pipeline; 180-positioning mechanism; 181-driving assembly; 1811-third driving member; 1812-rotating shaft; 182-positioning block; 1821-positioning wheel. DETAILED DESCRIPTION

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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).

[0045] Please refer to Figures 1 to 7 In the first aspect, the embodiment of the present invention provides an annular multi-station film breaking device 100 for breaking battery cells (the battery cells described in the present invention are all back-contact flexible module battery cells). It can realize the simultaneous operation of the loading and unloading mechanism 130 and the film breaking mechanism 140, effectively improve the breaking efficiency, and ensure the connection stability between the rotary suction mechanism 150 and the vacuum suction cup 160 on the mover 121 through the vacuum pipeline 170, prevent the vacuum pipeline 170 from falling off, ensure the breaking efficiency, and at the same time avoid the vacuum pipeline 170 from being entangled, knotted, worn, and externally interfered, thereby improving safety.

[0046] It should be noted that the back-contact flexible component battery is a solar cell. In the production process of the back-contact flexible component battery, the cell sheet needs to be split into multiple small pieces first, and then a preset number of small pieces are bonded to the flexible circuit board, with a certain gap between adjacent small pieces, to form a back-contact flexible component battery. In this way, when the back-contact flexible component battery needs to be used, the flexible circuit board is unfolded to achieve the flattening of multiple small pieces, so as to increase the contact area between the small pieces and the sunlight, thereby realizing the photovoltaic power generation function of the back-contact flexible component battery and ensuring the power generation efficiency; when the back-contact flexible component battery is not needed, the flexible circuit board is rolled up for easy storage and saves space. In this process, since there is a certain gap between adjacent small pieces, the small pieces will not interfere with the rolling of the flexible circuit board, which is convenient for the storage of the back-contact flexible component battery.

[0047] In this embodiment, the battery sheet is arranged in a rectangular shape. After the production, the battery sheet is small in size (500mm*500mm), and needs to be broken into multiple small pieces (50mm*50mm), that is, one battery sheet needs to be broken into about 100 small pieces (arranged in a rectangular shape). It is obviously not suitable to break the small pieces of such size and quantity by manual breaking (it is difficult to grasp the force point, it is not easy to break, and it is time-consuming and labor-intensive, the breaking efficiency is low, the degree of automation is low, and it is not suitable for mass production). Therefore, the annular multi-station film breaking device 100 of the present invention is used to break the battery sheet. However, it is not limited to this. In other embodiments, the size of the battery sheet may be 800mm*800mm, and the size of the small piece may be 40mm*40mm. The size of the battery sheet and the size of the small piece are not specifically limited.

[0048] The annular multi-station film breaking device 100 includes a frame 110, an annular conveyor line 120, a loading and unloading mechanism 130, a film breaking mechanism 140, a rotary suction mechanism 150 and a plurality of vacuum suction cups 160. The annular conveyor line 120, the loading and unloading mechanism 130, the film breaking mechanism 140 and the rotary suction mechanism 150 are all installed on the frame 110, and the frame 110 is used to fix the positions of the annular conveyor line 120, the loading and unloading mechanism 130, the film breaking mechanism 140 and the rotary suction mechanism 150. The annular conveyor line 120 includes a plurality of movers 121, and each vacuum suction cup 160 is connected to a mover 121. The annular conveyor line 120 can drive the mover 121 to perform a cyclic annular motion, so as to synchronously drive the vacuum suction cup 160 to perform a cyclic annular motion. A plurality of vacuum suction cups 160 are respectively connected to the rotary suction mechanism 150 through a plurality of vacuum pipelines 170. The rotary suction mechanism 150 can suck out the air in the vacuum suction cup 160 through the vacuum pipeline 170 to realize the vacuum adsorption function of the vacuum suction cup 160. The rotary suction mechanism 150 is arranged in the annular conveyor line 120. The rotary suction mechanism 150 is used to rotate with the movement of the mover 121 to ensure the stability of the connection between the rotary suction mechanism 150 and the vacuum suction cup 160 through the vacuum pipeline 170, thereby ensuring the stability of vacuum adsorption. The loading and unloading mechanism 130 and the coating breaking mechanism 140 are arranged outside the annular conveyor line 120, and are arranged in sequence along the conveying direction of the annular conveyor line 120 to prevent the vacuum pipeline 170 from interfering with the loading and unloading mechanism 130 and the coating breaking mechanism 140 during movement. Specifically, the loading and unloading mechanism 130 is used to load the battery cells onto the vacuum suction cup 160; the vacuum suction cup 160 is used to vacuum adsorb the battery cells under the action of the rotating suction mechanism 150 to fix the position of the battery cells and prevent the battery cells from shifting relative to the vacuum suction cup 160; the coating and breaking mechanism 140 is used to coat and break the battery cells adsorbed on the vacuum suction cup 160 to break the battery cells into multiple small pieces; the loading and unloading mechanism 130 is also used to unload the broken battery cells.

[0049] The rotary suction mechanism 150 includes an air pump (not shown), a first driving member 152, a rotating shaft 153 and a fixed cylinder 154. The first driving member 152 is mounted on the frame 110 and is in transmission connection with the rotating shaft 153. The first driving member 152 is used to drive the rotating shaft 153 to rotate around its axial direction. The circumferential surface of the rotating shaft 153 is provided with a plurality of annular grooves 1531, and the plurality of annular grooves 1531 are sequentially arranged along the axial direction of the rotating shaft 153. The bottom wall of the annular groove 1531 is provided with a vent hole 1532, that is, the vent hole 1532 is connected with the annular groove 1531. The rotating shaft 153 is provided with a plurality of exhaust channels 1533, and the plurality of exhaust channels 1533 are staggered and independently arranged. One end of each exhaust channel 1533 is connected with a vent hole 1532, and the other end is connected with a vacuum suction cup 160 through a group of vacuum pipelines 170, so as to realize the connection between the vacuum suction cup 160 and the annular groove 1531.

[0050] Furthermore, the fixed cylinder 154 is fixedly connected to the frame 110, and the fixed cylinder 154 is sleeved outside the rotating shaft 153 and rotates with the rotating shaft 153. The first driving member 152 can drive the rotating shaft 153 to rotate relative to the fixed cylinder 154. The fixed cylinder 154 is provided with a plurality of air extraction holes 1541, each of which is connected to an annular groove 1531, and the plurality of air extraction holes 1541 are connected to an air pump. The air pump is fixedly installed on the frame 110, and the air pump can sequentially evacuate the vacuum suction cup 160 through the air extraction holes 1541, the annular groove 1531, the air vent 1532, the exhaust channel 1533 and the vacuum pipeline 170 to realize the vacuum adsorption function of the vacuum suction cup 160. Specifically, during the process of the air pump evacuating the vacuum suction cup 160, the first driving member 152 can drive the rotating shaft 153 to rotate relative to the fixed cylinder 154, so as to synchronously drive the vacuum pipeline 170 to move in the annular conveyor line 120, so that the movement state of the vacuum pipeline 170 is consistent with that of the mover 121, thereby ensuring the stability of the connection between the vacuum pipeline 170 and the vacuum suction cup 160. During this process, the fixed cylinder 154 remains stationary, that is, the position of the exhaust hole 1541 remains unchanged, and the annular groove 1531 on the rotating shaft 153 always remains connected with the exhaust hole 1541.

[0051] Preferably, the rotating shaft 153 includes a shaft body 1534 and a truncated cone 1535 connected to each other. In this embodiment, the shaft body 1534 and the truncated cone 1535 are integrally formed to improve the connection strength. The fixed cylinder 154 is sleeved outside the shaft body 1534, the truncated cone 1535 is arranged above the fixed cylinder 154, and the annular groove 1531 and the exhaust channel 1533 are both arranged on the shaft body 1534, wherein the annular groove 1531 is arranged on the circumferential surface of the shaft body 1534, the exhaust channel 1533 is arranged inside the shaft body 1534, and the exhaust channel 1533 is extended along the axial direction of the shaft body 1534. A plurality of air holes 1536 are provided on the circumferential surface of the truncated cone 1535, and the plurality of air holes 1536 are distributed in a circular array, and each air hole 1536 is connected to an exhaust channel 1533, that is, one end of the exhaust hole is connected to the air hole 1536, and the other end is connected to the vent hole 1532.

[0052] Preferably, a plurality of stop rings 1537 are disposed on the circumferential surface of the rotating shaft 153, and the plurality of stop rings 1537 are disposed in parallel and spaced apart along the axial direction of the rotating shaft 153, an annular groove 1531 is formed between two adjacent stop rings 1537, and each vent hole 1532 is disposed between two adjacent stop rings 1537. A plurality of matching rings 1542 are convexly disposed on the inner wall of the fixed cylinder 154, and the plurality of matching rings 1542 are disposed in parallel and spaced apart along the axial direction of the fixed cylinder 154, and each air extraction hole 1541 is disposed between two adjacent matching rings 1542. Specifically, the mating ring 1542 is provided with a mating groove 1543, and the limiting ring 1537 is rotatably matched with the mating groove 1543 to realize the function of rotating the rotating shaft 153 relative to the fixed cylinder 154 and ensure the stability of the rotation process. In addition, a sealing ring 1544 is arranged in the mating groove 1543 to improve the air tightness of the annular groove 1531 and prevent the annular groove 1531 from communicating with the outside world, thereby ensuring the vacuuming effect of the rotating suction mechanism 150.

[0053] Preferably, the rotary suction mechanism 150 also includes a flange 155 and a plurality of gas distribution joints 156. The flange 155 is connected to the rotating shaft 153 and is coaxially arranged with the rotating shaft 153. The flange 155 is arranged above the truncated table 1535 of the rotating shaft 153. The first driving member 152 can synchronously drive the flange 155 to rotate through the rotating shaft 153. The plurality of gas distribution joints 156 are distributed in an annular array and are all installed on the flange 155. The position of each gas distribution joint 156 corresponds to the position of an air hole 1536. One end of each gas distribution joint 156 is connected to an exhaust channel 1533, and the other end is connected to a vacuum suction cup 160 through a group of vacuum pipes 170 to realize the gas distribution function, so that the rotary suction mechanism 150 can vacuum the vacuum suction cup 160 from multiple positions at the same time, improve the vacuuming efficiency, and ensure the vacuuming effect.

[0054] Furthermore, the vacuum suction cup 160 is provided with a plurality of exhaust joints 161, and the plurality of exhaust joints 161 are arranged at intervals. The gas distribution joint 156 is provided with an air outlet 1561 and a plurality of air inlets 1562, the air outlet 1561 is connected to the exhaust channel 1533 through the air hole 1536 of the truncated cone 1535, and is also connected to the plurality of air inlets 1562, and each air inlet 1562 is connected to an exhaust joint 161 through a vacuum pipeline 170 in each group. Specifically, during the process of the air pump evacuating the vacuum suction cup 160, the air in the vacuum suction cup 160 can simultaneously enter the multiple vacuum pipes 170 in each group from the multiple exhaust joints 161, and then enter the air distribution joint 156 through the multiple air inlets 1562, and then enter the air hole 1536, the exhaust channel 1533, the air vent 1532, the annular groove 1531 and the air extraction hole 1541 in turn through the air outlet 1561, and finally be sucked out to the outside by the air pump.

[0055] In this embodiment, the vacuum suction cup 160 is rectangular, and the number of exhaust joints 161 is three. The three exhaust joints 161 are respectively arranged on the three sides of the rectangle of the vacuum suction cup 160 (except for one side of the vacuum suction cup 160 away from the rotary suction mechanism 150) to realize the gas distribution function, so that the rotary suction mechanism 150 can evacuate the vacuum suction cup 160 from three positions at the same time. Correspondingly, the number of each group of vacuum pipelines 170 is three. Under the suction action of the rotary suction mechanism 150, the air in the vacuum suction cup 160 is divided into three paths and enters the three vacuum pipelines 170 from the three exhaust joints 161 respectively, so that the vacuuming efficiency is high and the vacuuming effect is good.

[0056] Preferably, the loading and unloading mechanism 130 includes a loading unit 131 and a unloading unit 132, and the film breaking mechanism 140 includes a transverse film breaking unit 141 and a longitudinal film breaking unit 142. The loading unit 131, the transverse film breaking unit 141, the longitudinal film breaking unit 142 and the unloading unit 132 are sequentially arranged along the conveying direction of the annular conveyor line 120, that is, the annular multi-station film breaking device 100 has four stations, namely, the loading station, the transverse film breaking station, the longitudinal film breaking station and the unloading station. During the conveying process of the annular conveyor line 120, the mover 121 will drive the vacuum suction cup 160 to pass through these four stations sequentially and cyclically. When the mover 121 drives the vacuum suction cup 160 to move to the loading station, the loading unit 131 loads the battery cell to the vacuum suction cup 160; when the mover 121 drives the vacuum suction cup 160 to move to the transverse coating and breaking station, the transverse coating and breaking unit 141 coats and transversely breaks the battery cell; when the mover 121 drives the vacuum suction cup 160 to move to the longitudinal coating and breaking station, the longitudinal coating and breaking unit 142 coats and longitudinally breaks the battery cell; when the mover 121 drives the vacuum suction cup 160 to move to the unloading station, the unloading unit 132 unloads the broken battery cell.

[0057] In this embodiment, the annular conveyor line 120 is in the shape of a rectangular ring, and the loading unit 131, the transverse coating and breaking unit 141, the longitudinal coating and breaking unit 142 and the unloading unit 132 are respectively arranged outside the four sides of the rectangular ring formed by the annular conveyor line 120, so as to realize the reasonable position distribution of the loading unit 131, the transverse coating and breaking unit 141, the longitudinal coating and breaking unit 142 and the unloading unit 132, and minimize the volume of the entire annular multi-station coating and breaking device 100 while ensuring no mutual interference, thereby saving equipment costs.

[0058] Specifically, the number of transverse film breaking units 141 and longitudinal film breaking units 142 are both multiple, and the multiple transverse film breaking units 141 can simultaneously break the transverse film of multiple battery cells, and the multiple longitudinal film breaking units 142 can simultaneously break the longitudinal film of multiple battery cells, so as to further improve the breaking efficiency. Accordingly, the number of movers 121 and vacuum suction cups 160 is four times the number of transverse film breaking units 141. While the multiple transverse film breaking units 141 simultaneously break the transverse film of multiple battery cells in the first part, the multiple longitudinal film breaking units 142 simultaneously break the longitudinal film of multiple battery cells in the second part, the loading unit 131 loads the multiple battery cells in the third part, and the unloading unit 132 unloads the multiple battery cells in the fourth part.

[0059] In this embodiment, the number of the transverse film rupture units 141 and the longitudinal film rupture units 142 are both two, the number of the movers 121 and the vacuum suction cups 160 are both eight, the number of the vacuum pipelines 170 is eight, the number of the gas distribution joints 156, the number of the air holes 1536, the exhaust channels 1533, the air holes 1532, the annular grooves 1531 and the air extraction holes 1541 are all eight, the number of the loading units 131 is one (to load two battery cells in sequence), and the number of the unloading units 132 is one (to unload two battery cells in sequence). However, this is not limited to this. In other embodiments, the number of the transverse film rupture units 141 and the longitudinal film rupture units 142 can be one or three, in which case the number of the movers 121 and the vacuum suction cups 160 are both four or twelve, and the number of the transverse film rupture units 141 and the longitudinal film rupture units 142 is not specifically limited.

[0060] Preferably, the annular conveyor line 120 further includes an annular support frame 122, a second driving member 123, a driving wheel 124, a transmission belt 125 and a driven wheel 126. The annular support frame 122 is connected to the frame 110, and the frame 110 is used to fix the position of the annular support frame 122. The mover 121 is provided with a roller 1212, and the roller 1212 is in rolling cooperation with the annular support frame 122. The roller 1212 can roll relative to the annular support frame 122, and the annular support frame 122 can support and limit the mover 121 through the roller 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 support frame 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 support frame 122, thereby driving the vacuum suction cup 160 to perform a cyclic annular motion.

[0061] Preferably, the annular multi-station film breaking device 100 further includes a positioning mechanism 180. The positioning mechanism 180 includes a driving assembly 181 and a positioning block 182. The driving assembly 181 is installed on the frame 110 and connected to the positioning block 182. The driving assembly 181 is used to drive the positioning block 182 to move. Specifically, the mover 121 is provided with a limiting groove 1211, and the driving assembly 181 is used to drive the positioning block 182 to cooperate with the limiting groove 1211 to fix the relative position of the mover 121 and the frame 110, thereby fixing the relative position of the vacuum suction cup 160 and the frame 110, and ensuring the stability of the loading and unloading and breaking process.

[0062] In this embodiment, there are four positioning mechanisms 180, which are respectively arranged outside the four sides of the rectangular ring formed by the annular conveyor line 120, and respectively correspond to the positions of the loading unit 131, the transverse coating and breaking unit 141, the longitudinal coating and breaking unit 142 and the unloading unit 132, wherein the first positioning mechanism 180 is used to fix the mover 121 at the loading station, the second positioning mechanism 180 is used to fix the mover 121 at the transverse coating and breaking station, the third positioning mechanism 180 is used to fix the mover 121 at the longitudinal coating and breaking station, and the fourth positioning mechanism 180 is used to fix the mover 121 at the unloading station.

[0063] Preferably, the driving assembly 181 includes a third driving member 1811 and a rotating shaft 1812. The frame 110 is provided with a bearing seat 111, the third driving member 1811 is in transmission connection with the rotating shaft 1812, the rotating shaft 1812 is in rotational cooperation with the bearing seat 111, the positioning block 182 is connected to the rotating shaft 1812, the third driving member 1811 is used to drive the rotating shaft 1812 to rotate relative to the bearing seat 111, so as to synchronously drive the positioning block 182 to rotate, so that the positioning block 182 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 182 are both two, one end of the rotating shaft 1812 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 182 are relatively arranged at the two ends of the rotating shaft 1812, and the third driving member 1811 can simultaneously drive the two positioning blocks 182 to rotate through the rotating shaft 1812, so that the two positioning blocks 182 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.

[0064] Preferably, a positioning wheel 1821 is provided at the free end of the positioning block 182 , and the positioning wheel 1821 cooperates with the limiting groove 1211 to reduce the friction between the positioning block 182 and the inner wall of the limiting groove 1211 , thereby improving the positioning accuracy.

[0065] Please refer to Figure 8 and Fig. 9 The coating breaking mechanism 140 includes a coating assembly 143 and a breaking assembly 144. The coating assembly 143 includes an isolation film 1431 and two lifting modules 1432. The two lifting modules 1432 are both installed on the frame 110 and are relatively arranged on both sides of the vacuum suction cup 160. The isolation film 1431 is connected between the two lifting modules 1432. The lifting module 1432 is used to drive the isolation film 1431 to descend and cover the surface of the battery cell to separate the breaking assembly 144 from the battery cell. The breaking assembly 144 includes a breaking robot arm 1441 and a roller shaft 1442. The breaking robot arm 1441 is installed on the frame 110 and is connected to the roller shaft 1442. The breaking robot arm 1441 is used to drive the roller shaft 1442 to press the battery cell covered with the isolation film 1431 to cause the battery cell to break, thereby realizing the automatic breaking function of the battery cell.

[0066] The breaking robot arm 1441 includes a fifth driving member 1443, a lifting frame 1444, a sixth driving member 1445 and a sliding frame 1446. The fifth driving member 1443 is installed on the frame 110 and connected to the lifting frame 1444. The fifth driving member 1443 is used to drive the lifting frame 1444 to move up and down along the first direction. The sixth driving member 1445 is installed on the lifting frame 1444 and connected to the sliding frame 1446. The sixth driving member 1445 is used to drive the sliding frame 1446 to move along the second direction. The roller shaft 1442 is connected to the sliding frame 1446, and the roller shaft 1442 can move with the movement of the sliding frame 1446.

[0067] Preferably, the first direction, the second direction and the axial direction of the roller shaft 1442 are perpendicular to each other, the fifth driving member 1443 can drive the roller shaft 1442 to rise and fall in the first direction via the lifting frame 1444, the sixth driving member 1445 and the sliding frame 1446 in sequence, and the sixth driving member 1445 can drive the roller shaft 1442 to move in the second direction via the sliding frame 1446.

[0068] It should be noted that the specific structures of the transverse coating breaking unit 141 and the longitudinal coating breaking unit 142 are the same, and both include a coating component 143 and a breaking component 144, and the transverse coating breaking unit 141 and the longitudinal coating breaking unit 142 are perpendicular to the breaking directions of the battery cells, wherein the transverse coating breaking unit 141 is used to break the battery cells into multiple strips along a first breaking direction (transverse), and the longitudinal coating breaking unit 142 is used to break multiple battery cells into multiple small pieces along a second breaking direction (transverse), and the first breaking direction is perpendicular to the second breaking direction.

[0069] During the process of the battery cell being broken by the breaking assembly 144 of the transverse coating breaking unit 141, the fifth driving member 1443 is first used to drive the roller pressing shaft 1442 to descend along the first direction to press the battery cell, so that the battery cell is broken into one strip in the first breaking direction; then the fifth driving member 1443 is used to drive the roller pressing shaft 1442 to rise along the first direction, and the sixth driving member 1445 is used to drive the roller pressing shaft 1442 to step along the first breaking direction by the width of the battery cell (the stepping distance is adjustable); then the fifth driving member 1443 is used to drive the roller pressing shaft 1442 to descend along the first direction to press the battery cell again, so that the battery cell is broken into one strip in the first breaking direction; this cycle is repeated to break the battery cell into multiple strips.

[0070] During the process of the battery cell being broken by the breaking assembly 144 of the longitudinal coating breaking unit 142, the fifth driving member 1443 is first used to drive the roller pressing shaft 1442 to descend along the first direction to simultaneously break multiple battery cells, so that multiple battery cells are simultaneously broken into one piece in the second breaking direction; then the fifth driving member 1443 is used to drive the roller pressing shaft 1442 to rise along the third direction, and the sixth driving member 1445 is used to drive the roller pressing shaft 1442 to step the length of one small piece in the second breaking direction (the stepping distance is adjustable); then the fifth driving member 1443 is used to drive the roller pressing shaft 1442 to descend along the first direction to again break multiple battery cells, so that multiple battery cells are simultaneously broken into one piece in the second breaking direction; this cycle is repeated to break multiple battery cells into multiple small pieces.

[0071] The lifting module 1432 includes a fourth driving member 1433, a lifting seat 1434, a mounting frame 1435 and a film winding shaft 1436. The fourth driving member 1433 is installed on the frame 110 and connected to the lifting seat 1434, the lifting seat 1434 is connected to the mounting frame 1435, the film winding shaft 1436 is installed on the mounting frame 1435, the isolation film 1431 is partially wound outside the film winding shaft 1436, and the film winding shaft 1436 is used to tighten the isolation film 1431. The fourth driving member 1433 can drive the film winding shaft 1436 to rise or fall through the lifting seat 1434 and the mounting frame 1435, so as to synchronously drive the isolation film 1431 to rise or fall.

[0072] Furthermore, the isolation film 1431 is located on a horizontal plane and is arranged parallel to the battery cell. The two lifting modules 1432 act synchronously to drive the two ends of the isolation film 1431 to descend or ascend synchronously, so as to cover the isolation film 1431 on the battery cell or to reset the isolation film 1431. Before the splitting assembly 144 splits the battery cell, the fourth driving member 1433 is used to drive the film winding shaft 1436 to descend until the isolation film 1431 covers the battery cell. At this time, the battery cell is arranged between the isolation film 1431 and the vacuum suction cup 160; after the splitting assembly 144 completes the splitting of the battery cell, and the splitting mechanical arm drives the roller pressing shaft 1442 to rise and reset, the fourth driving member 1433 is used to drive the film winding shaft 1436 to rise and reset, so as to separate the isolation film 1431 from the split battery cell, so as to facilitate the circular conveyor line 120 to drive the split battery cell to move to the next station through the vacuum suction cup 160. In this way, the isolation film 1431 can be reused, saving material costs and achieving high economic benefits.

[0073] Please refer to Fig.10The loading and unloading mechanism 130 includes a transfer robot arm 133 and a transfer suction cup 134. The transfer robot arm 133 is installed on the frame 110 and connected to the transfer suction cup 134. The transfer robot arm 133 is used to drive the transfer suction cup 134 to move. The transfer suction cup 134 is used to vacuum adsorb the battery cell to realize the loading and unloading function of the battery cell.

[0074] It should be noted that the loading unit 131 has the same specific structure as the loading unit 131, and both include a transfer robot arm 133 and a transfer suction cup 134. The loading unit 131 is used to transfer the battery cells to the vacuum suction cup 160 to realize the loading function, and the unloading unit 132 is used to move the multiple small pieces that have been broken out of the vacuum suction cup 160 to realize the unloading function.

[0075] In this embodiment, the first driving member 152 and the second driving member 123 are both driving motors, hydraulic motors or pneumatic motors, and the third driving member 1811, the fourth driving member 1433, the fifth driving member 1443 and the sixth driving member 1445 are all electric cylinders, hydraulic cylinders or pneumatic cylinders.

[0076] During the operation of the annular multi-station film breaking device 100, first, the loading unit 131 loads the battery cell to the vacuum suction cup 160; then the annular conveyor line 120 drives the vacuum suction cup 160 to move to the transverse film breaking station through the mover 121; then the transverse film breaking unit 141 performs transverse film breaking on the battery cell on the vacuum suction cup 160 to form multiple battery cells; then the annular conveyor line 120 drives the vacuum suction cup 160 to move to the longitudinal film breaking station through the mover 121; then the longitudinal film breaking unit 142 performs longitudinal film breaking on the multiple battery cells on the vacuum suction cup 160 to form multiple small pieces; then the annular conveyor line 120 drives the vacuum suction cup 160 to move to the unloading station through the mover 121; finally, the unloading unit 132 unloads multiple small pieces. This cycle is repeated to achieve automatic breaking of battery cells, with high breaking efficiency and good breaking effect, which is suitable for mass production.

[0077] In a second aspect, an embodiment of the present invention provides a flexible solar cell production line for producing back-contact flexible component cells, which includes the above-mentioned annular multi-station film breaking device 100.

[0078] The annular multi-station film breaking device 100 provided in the embodiment of the present invention comprises an annular conveyor line 120, a loading and unloading mechanism 130, a film breaking mechanism 140 and a rotary suction mechanism 150, all of which are installed on a frame 110. The annular conveyor line 120 comprises a plurality of movers 121, each vacuum suction cup 160 is connected to a mover 121, and the plurality of vacuum suction cups 160 are respectively connected to the rotary suction mechanism 150 through a plurality of vacuum pipelines 170. The rotary suction mechanism 150 is arranged in the annular conveyor line 120, and the rotary suction mechanism 150 is used to move with the moving parts 121. The loading and unloading mechanism 130 and the film breaking mechanism 140 are arranged outside the circular conveyor line 120 and are arranged in sequence along the conveying direction of the circular conveyor line 120. The loading and unloading mechanism 130 is used to load the battery cell to the vacuum suction cup 160. The vacuum suction cup 160 is used to vacuum adsorb the battery cell under the action of the rotating suction mechanism 150. The film breaking mechanism 140 is used to film and break the battery cell adsorbed on the vacuum suction cup 160. The loading and unloading mechanism 130 is also used to unload the battery cell after the break. The loading and unloading mechanism 130 and the film breaking mechanism 140 can be operated simultaneously, effectively improving the breaking efficiency, and can ensure the connection stability of the rotating suction mechanism 150 with the vacuum suction cup 160 on the mover 121 through the vacuum pipeline 170, prevent the vacuum pipeline 170 from falling off, ensure the breaking efficiency, and at the same time avoid the vacuum pipeline 170 from being entangled, knotted, worn and externally interfered, thereby improving safety. This makes the flexible solar cell production line efficient, safe and reliable, and suitable for mass production.

[0079] Specifically, by providing multiple movers 121 and multiple vacuum suction cups 160, and connecting each vacuum suction cup 160 to a mover 121, the function of the circular conveyor line 120 to simultaneously drive multiple vacuum suction cups 160 to move can be realized. In this way, when the loading and unloading mechanism 130 loads and unloads the battery cell on one vacuum suction cup 160, the coating and breaking mechanism 140 can coat and break the battery cell on another vacuum suction cup 160, so as to realize multi-station simultaneous operation and effectively improve the breaking efficiency. In addition, the multiple vacuum suction cups 160 circulate on the circular conveyor line 120 along with the multiple movers 121, and the movement direction is consistent, which can improve the stability of the movement of the vacuum suction cup 160.

[0080] 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. An annular multi-station film breaking device, characterized in that: The machine comprises a frame, an annular conveyor line, a loading and unloading mechanism, a coating breaking mechanism, a rotary suction mechanism and a plurality of vacuum suction cups, wherein the annular conveyor line, the loading and unloading mechanism, the coating breaking mechanism and the rotary suction mechanism are all installed on the frame, the annular conveyor line comprises a plurality of movers, each of the vacuum suction cups is connected to one of the movers, and the plurality of vacuum suction cups are respectively connected to the rotary suction mechanism through a plurality of groups of vacuum pipelines, the rotary suction mechanism is arranged in the annular conveyor line, and the rotary suction mechanism is used to rotate with the movement of the movers, the loading and unloading mechanism and the coating breaking mechanism are arranged outside the annular conveyor line, and are sequentially arranged along the conveying direction of the annular conveyor line, the loading and unloading mechanism is used to load the battery cell to the vacuum suction cup, the vacuum suction cup is used to vacuum adsorb the battery cell under the action of the rotary suction mechanism, the coating breaking mechanism is used to coat and break the battery cell adsorbed on the vacuum suction cup, and the loading and unloading mechanism is also used to unload the battery cell after the breaking is completed; The rotary suction mechanism comprises an air pump, a first driving member, a rotating shaft and a fixed cylinder, the first driving member is drivingly connected to the rotating shaft, a plurality of annular grooves are arranged on the circumferential surface 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 fixed cylinder is sleeved outside the rotating shaft and rotatably cooperates with the rotating shaft. The fixed cylinder is provided with a plurality of air extraction holes, each of which is communicated with one of the annular grooves, and the plurality of air extraction holes are all communicated with the air pump.

2. The annular multi-station film breaking 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 fixing 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.

3. The annular multi-station film breaking 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 at intervals along the axial direction of the rotating shaft, and an annular groove is formed between two adjacent limiting rings; The inner wall of the fixed tube is convexly provided with a plurality of matching rings, which are arranged in parallel and spaced apart along the axial direction of the fixed 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.

4. The annular multi-station film breaking device according to claim 1 is characterized in that: The rotary suction 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 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.

5. The annular multi-station film breaking device according to claim 4 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.

6. The annular multi-station film breaking device according to claim 1, characterized in that: The annular conveyor line also includes an annular support frame, a second driving member, a driving wheel, a transmission belt and a driven wheel. The mover is provided with a roller, and the roller is rollingly matched with the annular support frame. The second driving member is transmission-connected to the driving wheel, and the driving wheel is connected to the driven wheel through the transmission belt, and the mover is connected to the transmission belt.

7. The annular multi-station film breaking device according to claim 1, characterized in that: The annular multi-station coating breaking device also includes a positioning mechanism, which includes a driving assembly and a positioning block. The driving assembly is installed on the frame 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.

8. The annular multi-station film breaking device according to claim 7, characterized in that: The driving assembly includes a third driving member and a rotating shaft, the frame 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.

9. The annular multi-station film breaking device according to claim 1, characterized in that: The loading and unloading mechanism includes a loading unit and a unloading unit, the coating breaking mechanism includes a transverse coating breaking unit and a longitudinal coating breaking unit, and the loading unit, the transverse coating breaking unit, the longitudinal coating breaking unit and the unloading unit are arranged in sequence along the conveying direction of the annular conveyor line.

10. The annular multi-station film breaking device according to claim 9, characterized in that: The annular conveyor line is in a rectangular ring shape, and the loading unit, the transverse coating and breaking unit, the longitudinal coating and breaking unit and the unloading unit are respectively arranged outside the four sides of the rectangular ring formed by the annular conveyor line.

11. The annular multi-station film breaking device according to claim 9, characterized in that: The number of the transverse coating breaking units and the number of the longitudinal coating breaking units are both multiple, and the number of the movers and the vacuum suction cups are both four times the number of the transverse coating breaking units.

12. The annular multi-station film breaking device according to claim 1, characterized in that: The film breaking mechanism includes a film covering component and a breaking component, the film covering component includes an isolation film and two lifting modules, the two lifting modules are installed on the frame and are relatively arranged on both sides of the vacuum suction cup, the isolation film is connected between the two lifting modules, and the lifting modules are used to drive the isolation film to descend and cover the surface of the battery sheet; The breaking assembly includes a breaking robot arm and a roller shaft. The breaking robot arm is installed on the frame and connected to the roller shaft. The breaking robot arm is used to drive the roller shaft to apply pressure to the battery cell covered with the isolation film to break the battery cell.

13. The annular multi-station film breaking device according to claim 12, characterized in that: The lifting module includes a fourth driving member, a lifting seat, a mounting frame and a film winding shaft, the fourth driving member is connected to the lifting seat, the lifting seat is connected to the mounting frame, the film winding shaft is installed on the mounting frame, the isolation film is partially wound outside the film winding shaft, and the film winding shaft is used to tighten the isolation film.

14. The annular multi-station film breaking device according to claim 12, characterized in that: The breaking robot arm includes a fifth driving member, a lifting frame, a sixth driving member and a sliding frame, the fifth driving member is connected to the lifting frame, the fifth driving member is used to drive the lifting frame to lift and lower along a first direction, the sixth driving member is installed on the lifting frame and connected to the sliding frame, the sixth driving member is used to drive the sliding frame to move along a second direction, the roller shaft is connected to the sliding frame, and the first direction, the second direction and the axial direction of the roller shaft are perpendicular to each other.

15. The annular multi-station film breaking device according to claim 1, characterized in that: The loading and unloading mechanism includes a transfer robot arm and a transfer suction cup. The transfer robot arm is installed on the frame and connected to the transfer suction cup. The transfer suction cup is used to vacuum adsorb the battery cells.

16. A flexible solar cell production line, characterized in that: It comprises the annular multi-station film breaking device as described in any one of claims 1 to 15.

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