A full series-parallel shingled photovoltaic module mass production system and working method thereof

Abstract

The present invention discloses a full series-parallel shingled photovoltaic module mass production system and its working method, which belong to the field of photovoltaic power generation technology. It includes a stacking platform, a control system, two feeding units and two manipulators; the two feeding units are respectively arranged on both sides of the stacking platform; the feeding unit includes a positioning device, a visual inspection device, a plurality of dispensing modules and a plurality of feeding boxes. The dispensing modules and the feeding boxes in the feeding unit adopt a detachable modular design, and the quantity can be configured according to actual production needs. When a feeding box is out of material, it will not stop and affect production efficiency. The visual inspection device can detect cells with quality defects in time, and then multiple dispensing modules will dispense glue to multiple cells that have been inspected at the same time. The two manipulators work in coordination with the two feeding units respectively to place the cells one by one and row by row on the stacking platform, and efficiently complete the stacking process of the full series-parallel shingled photovoltaic module.

Description

Technical Field

[0001] The present invention belongs to the technical field of photovoltaic power generation, and in particular relates to a full-series-parallel shingled photovoltaic module mass production system and a working method thereof. Background Art

[0002] The current loading part of photovoltaic module manufacturing equipment has the following problems:

[0003] The production equipment of ordinary shingled photovoltaic modules all adopts the method of first assembling "longitudinal shingled battery cells" and then combining and packaging multiple groups of "longitudinal shingled battery cells" into shingled photovoltaic modules. During the production process, it is impossible to achieve horizontal connection between different silicon wafers, so automated production of "full series-parallel photovoltaic modules" cannot be carried out.

[0004] The manufacturing equipment for full-series-parallel shingled photovoltaic modules (experimental equipment) can realize the lateral overlap of "full-series-parallel photovoltaic modules" and achieve the purpose of fully automated production of new "full-series-parallel photovoltaic modules". However, the experimental equipment has many shortcomings in terms of yield and production speed. First of all, the experimental equipment is only equipped with a set of loading devices, a set of robotic arms, a set of positioning devices, and a set of dispensing devices; the production speed can only reach 1,000 pieces (small pieces) per hour, which is far from meeting the requirements of mass production; in addition, the experimental equipment is not equipped with a visual inspection module. When the small pieces in the material box themselves have defects, or when the small battery cells are damaged during the production process, the equipment cannot detect the situation and continue to perform subsequent operations, resulting in the damaged battery cells being placed in the battery cell group, causing defects in photovoltaic modules or even the entire panel being scrapped. Therefore, the current experimental equipment has many shortcomings in terms of yield and production speed, and cannot achieve mass production of full-series-parallel shingled photovoltaic modules. Summary of the invention

[0005] In order to solve the defects existing in the above-mentioned prior art, the purpose of the present invention is to provide a full-series-parallel shingled photovoltaic module mass production system and its working method, which has a high degree of automation and flexible configuration, can improve product quality and production capacity, and realize large-scale industrial production of shingled photovoltaic modules.

[0006] The present invention is achieved through the following technical solutions:

[0007] The invention discloses a full series-parallel shingled photovoltaic module mass production system, comprising a stacking platform, a control system, two loading units and two manipulators; the two loading units are respectively arranged on both sides of the stacking platform;

[0008] The loading unit includes a positioning device, a visual inspection device, a plurality of dispensing modules and a plurality of loading boxes; the dispensing modules and the loading boxes are both detachably arranged in the loading unit; the visual inspection device is arranged on the positioning device, and two manipulators are respectively arranged between the stacking platform and each loading unit, and the manipulators are used to transfer the battery cells in turn between the loading box, the positioning device, the dispensing module and the stacking platform; the manipulator, the stacking platform, the positioning device, the visual inspection device and the dispensing module are all connected to the control system.

[0009] Preferably, the positioning device, the visual inspection device, several dispensing modules and several loading boxes are integrated in a cabinet, an indicator light is provided above the cabinet, a touch screen and an operation panel are provided on the side of the cabinet, and the touch screen, the operation panel and the indicator light are all connected to the control system.

[0010] Preferably, the lamination platform comprises a drive motor and a temperature control device, and both the drive motor and the temperature control device are connected to the control system.

[0011] Preferably, the loading box is provided with an air blowing device.

[0012] Preferably, the dispensing module includes a multi-directional jetting piezoelectric dispensing valve.

[0013] Preferably, a vacuum suction cup is provided on the robot.

[0014] The working method of the above-mentioned full series-parallel shingled photovoltaic module mass production system disclosed in the present invention includes:

[0015] The pre-cut battery cells are placed in the loading box, and the control system controls the robot to transfer the battery cells to the positioning device for positioning. The visual inspection device then inspects the battery cells. The qualified battery cells are then transferred to the dispensing module by the robot for dispensing. Two robots respectively place the battery cells with completed dispensing in the two loading units onto the stacking platform. As the stacking platform moves, the cells are stacked one by one and row by row, and finally a complete series-parallel stacked photovoltaic module is formed.

[0016] Compared with the prior art, the present invention has the following beneficial technical effects:

[0017] The present invention discloses a full series-parallel shingled photovoltaic module mass production system. The dispensing module and the feeding box in the feeding unit adopt a detachable modular design. The quantity can be configured according to actual production needs. When a feeding box is out of material, it will not stop and affect production efficiency. The visual inspection device can detect cells with quality defects in time, and then multiple dispensing modules will dispense glue to multiple cells that have been inspected at the same time. Two manipulators work in coordination with two feeding units respectively to place the cells one by one and row by row on the stacking platform, and efficiently complete the stacking process of the full series-parallel shingled photovoltaic module.

[0018] Furthermore, the control system, feeding module, detection and positioning module and dispensing module are integrated in the cabinet, which can save space and reduce environmental impact; the indicator light can indicate the working status of the system, which is convenient for staff to inspect and manage; the touch screen and operation panel can facilitate staff to operate.

[0019] Furthermore, the loading box is provided with an air blowing device, which can separate the battery cells well and prevent adhesion.

[0020] Furthermore, the multi-directional jetting piezoelectric dispensing valve is compatible with different process requirements.

[0021] Furthermore, the adsorption device adopts a vacuum suction cup, which is low in cost, pollution-free, and will not damage the battery cell.

[0022] The working method of the above-mentioned full-series-parallel shingled photovoltaic module mass production system disclosed in the present invention, the visual inspection device can improve the detection rate of defective battery cells and improve the quality of the entire battery module. Multiple feeding boxes can always maintain the feeding working state and reduce the downtime rate. The two feeding units work in coordination with a high degree of automation, which significantly improves the production efficiency and has good application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the mass production system of the full series-parallel shingled photovoltaic module of the present invention;

[0024] Figure 2 It is a schematic diagram of the internal structure of the feeding unit of the present invention;

[0025] Figure 3 Schematic diagram of system configuration according to an embodiment of the present invention.

[0026] In the figure: 1 is the loading unit, 1-1 is the touch screen, 1-2 is the operation panel, 1-3 is the indicator light, 1-4 is the loading module, 1-5 is the positioning device, 1-6 is the dispensing module, 1-7 is the visual inspection device, 2 is the manipulator, and 3 is the stacking platform. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below with reference to the accompanying drawings and embodiments:

[0028] The full series-parallel shingled photovoltaic module mass production system of the present invention comprises a stacking platform 3, a control system, two loading units 1 and two manipulators 2; Figure 1 The two feeding units 1 are respectively arranged on both sides of the stacking platform 3. The stacking platform 3 is provided with a high-speed and precise driving motor and a temperature control device, and both the driving motor and the temperature control device are connected to the control system.

[0029] like Figure 2(In the figure, only one of each device and module is drawn for schematic illustration), the loading unit 1 includes a positioning device 1-5, a visual inspection device 1-7, a plurality of dispensing modules 1-6 and a plurality of loading boxes 1-4; the loading box 1-4 is provided with an air blowing device, the dispensing module 1-6 adopts a multi-directional jet piezoelectric dispensing valve, and the dispensing module 1-6 and the loading box 1-4 are both detachably arranged in the loading unit 1; the visual inspection device 1-7 is arranged on the positioning device 1-5, and two manipulators 2 are respectively arranged between the stacking platform 3 and each loading unit 1, the manipulator 2 is used to transfer the battery cells in turn between the loading box 1-4, the positioning device 1-5, the dispensing module 1-6 and the stacking platform 3, a vacuum suction cup is arranged on the manipulator 2, and the vacuum suction cup is connected to the vacuum generating device, and the manipulator 2, the stacking platform 3, the positioning device 1-5, the visual inspection device 1-7 and the dispensing module 1-6 are all connected to the control system.

[0030] The visual inspection device 1-7 can effectively identify various defects of the battery cell through the combination of CCD image sensors and visual recognition technology. The defect types include: battery cell gaps, battery cell edge collapse, battery cell breakage, dimensional deviation, bends, scratches, spots, watermarks, grid line defects, grid line misalignment, etc.; when the battery cell is positioned by the positioning module, the visual recognition module starts working, and qualified battery cells are allowed to proceed to the next step of glue dispensing operation, and unqualified battery cells are eliminated, which has greatly improved the yield rate compared to models without visual recognition.

[0031] The control system, the feeding module 1-4, the detection and positioning module 1-5, the dispensing module 1-6 and the visual detection device 1-7 are integrated in the cabinet. Figure 1 Indicator lights 1-3 are arranged above the cabinet, and a touch screen 1-1 and an operation panel 1-2 are arranged on the side of the cabinet. The touch screen 1-1, the operation panel 1-2 and the indicator lights 1-3 are all connected to the control system.

[0032] The positioning device 1-5, the visual inspection device 1-7, several dispensing modules 1-6 and several loading boxes 1-4 are integrated in the cabinet. An indicator light 1-3 is provided above the cabinet. A touch screen 1-1 and an operation panel 1-2 are provided on the side of the cabinet. The touch screen 1-1, the operation panel 1-2 and the indicator light 1-3 are all connected to the control system.

[0033] The working method of the full series-parallel shingled photovoltaic module mass production system of the present invention is further explained below with a specific embodiment:

[0034] like Figure 3 , which is a typical module or functional configuration, is equipped with 4 loading boxes 1-4, 2 positioning devices 1-5, 2 sets of visual inspection devices 1-7, and 6 dispensing modules 1-6 in 2 loading units 1; in addition, there are 2 manipulators 2 and 1 stacking platform 3.

[0035] In each loading unit 1, the yield of each module is maximized and then the quantity is matched to achieve the optimal ratio: the two loading boxes 1-4 feed alternately, and when one of the loading boxes 1-4 needs to add battery cells, the other loading box 1-4 continues to keep the feeding working state, so that the equipment can maintain the production state without stopping; the positioning device 1-5 and the visual inspection device 1-7 have high speeds, and one set of positioning device 1-5, visual inspection device 1-7 and manipulator 2 can meet the production coordination needs of the loading boxes 1-4 and 3 dispensing modules 1-6.

[0036] The addition of the manipulator 2 can effectively increase the speed of placing the cells, because one manipulator 2 matches three dispensing modules 1-6, and one manipulator 2 can simultaneously grab a maximum of three cells. The manipulators 2 in the two loading units 1 cooperate, and each manipulator 2 takes three cells at a time from the three dispensing modules 1-6 it matches, and then moves to the corresponding position on the stacking table 3 and puts them down. With such a transfer action, two manipulators 2 can complete the placement of six cells at a time.

[0037] The number of cells in a row of series-parallel shingled assemblies in the short-side direction is typically 6. A rail-type robotic arm or other types of stacking structures can only place 1 cell at a time. To complete the placement of a row of 6 cells, 6 cycles of taking and placing cells are required. In addition, the speed of rail-type robotic arms or other types of stacking structures is slow, and each cycle takes longer, so the production capacity is extremely low. In the present invention, two loading units 1 act at the same time, and each loading unit 1 can place 3 cells at a time. The robotic arm 2 that cooperates with the two loading units 1 can complete the placement of 6 cells at a time, and then continue to return to their respective dispensing modules 1-6 to take the cells. At the same time, the stacking table 3 moves in the long-side direction, stepping one cell width, waiting for the placement of the next row of cells. Therefore, the production speed is greatly increased. This configuration can achieve a production capacity of 9,000 cells / hour, which is greatly improved compared to the existing machine configuration.

[0038] It should be noted that what is described in the embodiment is only a preferred implementation of the present invention. For ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A full series-parallel shingled photovoltaic module mass production system, characterized in that: It comprises a stacking platform (3), a control system, two loading units (1) and two manipulators (2); the two loading units (1) are respectively arranged on both sides of the stacking platform (3); The loading unit (1) comprises a positioning device (1-5), a visual inspection device (1-7), a plurality of dispensing modules (1-6) and a plurality of loading boxes (1-4); the dispensing modules (1-6) and the loading boxes (1-4) are both detachably arranged in the loading unit (1); the visual inspection device (1-7) is arranged on the positioning device (1-5); two manipulators (2) are respectively arranged between the stacking platform (3) and each loading unit (1); the manipulators (2) are used to transfer the battery cells in sequence between the loading boxes (1-4), the positioning device (1-5), the dispensing modules (1-6) and the stacking platform (3); the manipulators (2), the stacking platform (3), the positioning device (1-5), the visual inspection device (1-7) and the dispensing modules (1-6) are all connected to a control system; A positioning device (1-5), a visual inspection device (1-7), a plurality of dispensing modules (1-6) and a plurality of loading boxes (1-4) are integrated in a cabinet, an indicator light (1-3) is provided above the cabinet, a touch screen (1-1) and an operation panel (1-2) are provided on the side of the cabinet, and the touch screen (1-1), the operation panel (1-2) and the indicator light (1-3) are all connected to a control system; The lamination platform (3) comprises a drive motor and a temperature control device, and both the drive motor and the temperature control device are connected to a control system; The loading box (1-4) is provided with an air blowing device.

2. The full series-parallel shingled photovoltaic module mass production system according to claim 1 is characterized in that: The dispensing module (1-6) includes a multi-directional jetting piezoelectric dispensing valve.

3. The full series-parallel shingled photovoltaic module mass production system according to claim 1 is characterized in that: The robot arm (2) is provided with a vacuum suction cup.

4. The working method of the full series-parallel shingled photovoltaic module mass production system according to any one of claims 1 to 3, characterized in that: include: The pre-cut battery cells are placed in a loading box (1-4), and a control system controls a manipulator (2) to transfer the battery cells to a positioning device (1-5) for positioning. Then, a visual inspection device (1-7) inspects the battery cells. The qualified battery cells are then transferred to a glue dispensing module (1-6) by the manipulator (2) for glue dispensing. Two manipulators (2) respectively place the battery cells that have been glued in two loading units (1) onto a stacking platform (3). As the stacking platform moves, the cells are stacked one by one and row by row, and finally a whole series-parallel stacked photovoltaic module is formed.

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