Photovoltaic module welding device accurate in alignment and capable of effectively protecting battery pieces

Abstract

A photovoltaic module welding device accurate in alignment and capable of effectively protecting battery pieces comprises a bottom table and a welding table, supporting columns are installed on the bottom table, a fixed transverse column is installed at the top end between the supporting columns, the photovoltaic module welding device further comprises a conveying device connected with one side of the bottom table and a positioning device arranged on the welding table, and the conveying device is connected with the bottom table. A grabbing device and a welding device are arranged on the fixing transverse column and correspond to the conveying device and the positioning device. Through the arrangement of the grabbing device and the positioning device, the arrangement of a detection head in the grabbing device can ensure that the sucking part of a sucking disc to a photovoltaic module is accurate, the situation that subsequent positioning is inaccurate due to the fact that the sucking part is wrong is prevented, the position of the sucking disc releasing the photovoltaic module can be accurately positioned, and the positioning accuracy is improved through the arrangement of a positioning table and a side positioning pressing plate in the positioning device. Four-side positioning and four-corner positioning can be carried out on the photovoltaic module, the photovoltaic module can be accurately positioned, welding positioning is accurate, the quality of a welded product is high, and the welded product is not prone to being scrapped.

Description

Technical Field

[0001] The present invention relates to the technical field of photovoltaic module processing tooling, and in particular to a photovoltaic module welding device that can accurately align and effectively protect battery cells. Background Art

[0002] Photovoltaic modules, also known as solar panels, are the core part of solar power generation systems. They are devices composed of multiple cells connected in series or in parallel and packaged and protected. They can convert solar energy into electrical energy and are the main components of solar power generation systems. Photovoltaic modules are devices that use the photovoltaic effect to directly convert light energy into electrical energy. They are the smallest indivisible combination of solar cells that are packaged and internally connected and can provide direct current alone. Photovoltaic modules play a vital role in solar power generation systems. They convert captured sunlight into electrical energy to drive the load. The preparation of photovoltaic modules usually requires processes such as sorting, dicing, welding, lamination, and pressing. Among them, the welding of the junction box of the photovoltaic module is a very important process. As a key component for completing the power transmission of the module, the welding quality of the photovoltaic junction box is directly related to the performance and reliability of the module. Poor welding quality will lead to poor current transmission and affect the overall efficiency and service life of the photovoltaic system. However, the existing photovoltaic module welding device cannot accurately clamp the photovoltaic module for positioning during welding, resulting in the inability to accurately position the photovoltaic module, the welding positioning is not accurate enough, the welding quality is poor, and the photovoltaic module is easily scrapped. Therefore, it is particularly necessary to design a photovoltaic module welding device that can accurately align and effectively protect the battery cells to solve the above technical problems. Summary of the invention

[0003] The purpose of the present invention is to provide a photovoltaic module welding device that is accurately aligned and effectively protects the battery cells, so as to solve the problem that the existing photovoltaic module welding device proposed in the above background technology cannot accurately clamp the photovoltaic module for positioning during welding, resulting in the inability to accurately position the photovoltaic module, the welding positioning is not accurate enough, the welding quality is poor, and the photovoltaic module is easily scrapped.

[0004] In order to solve the above technical problems, the present invention provides a photovoltaic module welding device with precise alignment and effective protection of solar cells. A photovoltaic module welding device with precise alignment and effective protection of solar cells comprises a base and a welding table, wherein the base is equipped with pillars, and fixed cross columns are installed at the top ends between the pillars. It also includes a conveying device connected to one side of the base and a positioning device arranged on the welding table, and a gripping device and a welding device are respectively provided on the fixed cross column to correspond to the conveying device and the positioning device.

[0005] Preferably, the grasping device includes a grasping robot arm, and a grasping cylinder and a counterweight are installed at the head and tail of the grasping robot arm respectively, the piston rod of the grasping cylinder extends downward through the grasping robot arm, and a suction cup plate is installed at the end of the extended end of the piston rod, and a connecting block is installed at the lower part of the suction cup plate, and the connecting blocks are arranged in an array, and the front view of the connecting block is an inverted T shape, and suction cups are installed at both ends of the inverted T-shaped connecting block, and a line connector is provided at the head, and detection heads are provided between the connecting blocks near the side of the suction cup plate.

[0006] Preferably, the positioning device includes a welding table and a lifting platform installed in the middle of the welding table, the periphery of the movable circular table of the lifting platform is installed with support blocks through connecting columns, and a pressure sensor is installed on the top of the movable circular table, surrounding the lifting platform, and a positioning table is installed on the welding table. The positioning tables are arranged in an orderly manner according to a rectangle, and a positioning cylinder is installed at the top end of the positioning table. The piston rod of the positioning cylinder extends toward the lifting platform, and a positioning block is installed at the extended end of the piston rod, the shape of the positioning block is adapted to the photovoltaic component, and a side positioning pressure plate is provided between the positioning blocks, the side positioning pressure plate is installed on the pushing cylinder, and the pushing cylinder is installed on the column.

[0007] Preferably, the welding device includes a welding robot arm, a transmission pair is installed at the bottom of the welding robot arm, the transmission pair includes a movable slide rail and a slide plate, a telescopic cylinder is installed at the end of the slide plate, the piston rod of the telescopic cylinder extends downward and is connected to the welding head axis, and a positioning detector is installed on the side of the welding head.

[0008] Preferably, the conveying device includes conveying uprights arranged in parallel, conveying slide rails are installed on the tops of the conveying uprights, the conveying frame is slidably installed on the conveying slide rails, the conveying frame includes a conveying slide column and a bottom plate, and a protective plate is provided at the conveying terminal near the conveying slide rails, and the protective plate is installed on the base.

[0009] Preferably, the fixed horizontal columns are equipped with slide rails, the grabbing robot arm and the welding robot arm are respectively equipped with horizontal plates and connecting plates at the bottom, the bottom of the horizontal plates are equipped with rib plates and vertical plates, the connecting plates and the vertical plates are equipped with moving plates, and the moving plates are equipped with sliders matching the slide rails.

[0010] Preferably, a pad is provided on the top of the support block, and the pad acts to support friction.

[0011] Preferably, a telescopic rotator is installed at the end of the positioning cylinder, the telescopic rod of the telescopic rotator extends upward and is connected to one end of the rotating plate, and a positioning block is installed at the other end of the rotating plate. Displacement detectors are installed on both sides of the positioning block, and the displacement detector is used to detect whether the position is correct during the positioning process of transporting photovoltaic components.

[0012] The beneficial effects of the present invention are: 1. The arrangement of the gripping device and the positioning device. The arrangement of the detection head in the gripping device can ensure that the suction cup accurately absorbs the photovoltaic module, preventing the subsequent positioning from being inaccurate due to the wrong absorption position. It can also accurately locate the position where the suction cup releases the photovoltaic module. The positioning block, positioning pressure block and side positioning pressure plate in the positioning device can locate the four sides and four corners of the photovoltaic module. The photovoltaic module can be accurately pressed and positioned, the welding positioning is accurate, the welding product quality is high, and it is not easy to be scrapped; 2. The setting of the conveying device allows the photovoltaic modules to be transported by the conveying frame to a position that is conducive to clamping. The transportation is stable and the photovoltaic modules are not easily damaged, which indirectly reduces the possibility of scrapping the photovoltaic modules; 3. The setting of the welding device, the coordinated work of the positioning detector and the welding head can accurately locate the welding point, increase the welding accuracy, further guarantee the improvement of the quality of the welding products, and reduce the possibility of scrapping of photovoltaic modules; 4. The arrangement of the connection blocks and the parallel installation of the suction cups at both ends of the connection blocks make the adsorption of photovoltaic modules more stable, providing a guarantee for the precise positioning of photovoltaic modules; 5. The setting of the protective plate can not only position the photovoltaic modules but also prevent welding spatter, which is beneficial to improve the safety of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0014] Figure 1 This is an overall front view of a photovoltaic module welding device of the present invention that can be accurately aligned and effectively protect the cells; Figure 2 A top view of the partial structure of a photovoltaic module welding device for effectively protecting cells with precise alignment according to the present invention; Figure 3 A schematic diagram of a positioning device for a photovoltaic module welding device of the present invention that can accurately align and effectively protect the battery cells; Figure 4 A schematic diagram of a grabbing device of a photovoltaic module welding device for effectively protecting solar cells with precise alignment according to the present invention; Figure 5 A schematic diagram of a welding head of a photovoltaic module welding device for effectively protecting cells with precise alignment according to the present invention; Figure 6 A schematic diagram of a conveying device of a photovoltaic module welding device for accurately aligning and effectively protecting battery cells according to the present invention; Figure 7 The present invention is a schematic diagram of the structure of a positioning platform for a photovoltaic module welding device that can accurately align and effectively protect solar cells.

[0015] In the figure: 1. Base; 11. Pillar; 12. Fixed horizontal column; 13. Slide rail; 14. Column; 15. Push cylinder; 16. Side positioning plate; 2. Grasping robot arm; 21. Grasping cylinder; 22. Suction cup plate; 23. Suction cup; 24. Detection head; 25. Horizontal plate; 26. Rib plate; 27. Shift plate; 28. Slider; 29. ​​Counterweight; 3. Welding robot arm; 31. Connecting plate; 32. Slide plate; 33. Telescopic gas Cylinder; 34, welding head; 35, positioning detector; 4, welding table; 41, lifting table; 42, support block; 43, cushion block; 44, positioning table; 45, positioning cylinder; 46, positioning block; 47, telescopic rotator; 48, rotating plate; 49, positioning pressure block; 5, conveying vertical plate; 51, conveying slide rail; 52, conveying frame; 53, conveying slide column; 54, protective plate; 6, connecting block; 7, displacement detector. DETAILED DESCRIPTION

[0016] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0017] like Figure 1-Figure 6 As shown, a photovoltaic module welding device of the present invention that can effectively protect the solar cells with precise alignment comprises a base 1 and a welding platform 4, a support 11 is installed on the base 1, a fixed horizontal column 12 is installed at the top end of the support 11, a conveying device is connected to one side of the base 1, a positioning device is arranged on the welding platform 4, and a gripping device and a welding device are respectively arranged on the fixed horizontal column 12 to correspond to the conveying device and the positioning device; See Figure 1 , Figure 4 The grabbing device includes a grabbing mechanical arm 2, and the head and tail of the grabbing mechanical arm 2 are respectively equipped with a grabbing cylinder 21 and a counterweight 29. The piston rod of the grabbing cylinder 21 extends downward and passes through the grabbing mechanical arm 2. The end of the piston rod is equipped with a suction cup plate 22. The lower part of the suction cup plate 22 is equipped with a connecting block 6. The connecting blocks 6 are arranged in an array. The front view of the connecting block 6 is an inverted T shape. Suction cups 23 are installed at both ends of the inverted T-shaped connecting block 6. The head is provided with a line connector for connecting an external device to control the suction cup 23 to absorb and release the photovoltaic module. A detection head 24 is provided between the connection blocks 6 near the side of the suction cup plate 22. The detection head 24 is used to detect the position so that the suction cup 23 can absorb the photovoltaic module at the specified position. The detection head 24 can use a position sensor with a model of "DR13-ZX-21"; See Figure 3The positioning device includes a welding table 4 and a lifting table 41 installed in the middle of the welding table 4. A support block 42 is installed on the periphery of the movable round table of the lifting table 41 through a connecting column. A pressure sensor is installed on the top of the movable round table, surrounding the lifting table 41. A positioning table 44 is installed on the welding table 4. The positioning tables 44 are arranged in an orderly manner according to a rectangle. A positioning cylinder 45 is installed at the top end of the positioning table 44. The piston rod of the positioning cylinder 45 extends toward the lifting table 41, and a positioning block 46 is installed at the protruding end of the piston rod. The shape of the positioning block 46 is adapted to the photovoltaic module. A side positioning pressure plate 16 is provided between the positioning blocks 46. The positioning surface of the side positioning pressure plate 16 is of flexible design to reduce the damage to the photovoltaic module caused by the pressing and positioning. The side positioning pressure plate 16 is installed on the pushing cylinder 15, and the pushing cylinder 15 is installed on the column 14. A cushion block 43 is provided on the top of the support block 42. The cushion block 43 reduces the support friction and reduces the support wear on the photovoltaic module. The model of the pressure sensor is "2006V1IEPE"; See Figure 7 A telescopic rotator 47 is installed at the end of the positioning cylinder 45. The telescopic rod of the telescopic rotator 47 extends upward and is connected to one end of a rotating plate 48. A positioning block 49 is installed at the other end of the rotating plate 48. Displacement detectors 7 are installed on both sides of the positioning block 49. The displacement detector 7 is used to detect whether the position is correct during the transportation and positioning of the photovoltaic component. When the displacement of the photovoltaic component is incorrect, the displacement detector 7 will transmit a command through the line to interrupt the transportation process of the photovoltaic component, and the position of the photovoltaic component can be adjusted immediately to facilitate subsequent accurate positioning.

[0018] See Figure 1 , Figure 5 The welding device includes a welding robot arm 3, a transmission pair is installed at the bottom of the welding robot arm 3, the transmission pair includes a movable slide rail and a slide plate 32, a telescopic cylinder 33 is installed at the end of the slide plate 32, a piston rod of the telescopic cylinder 33 extends downward and is axially connected to a welding head 34, and a positioning detector 35 is installed on the side of the welding head 34; See Figure 6 The conveying device includes conveying upright plates 5 arranged in parallel, each of which is provided with a conveying slide rail 51 on the top, a conveying frame 52 is slidably installed on the conveying slide rail 51, and the conveying frame 52 includes a conveying slide column 53 and a bottom plate. A protective plate 54 is provided at the conveying terminal close to the conveying slide rail 51, and the protective plate 54 is installed on the bottom platform 1 (the conveying direction is from the outside to the welding platform 4); See Figure 1 , slide rails 13 are installed on the fixed horizontal column 12, and horizontal plates 25 and connecting plates 31 are installed at the bottom of the grabbing robot arm 2 and the welding robot arm 3 respectively. Rib plates 26 and vertical plates are installed at the bottom of the horizontal plate 25, and moving plates 27 are installed on the connecting plate 31 and the vertical plate. Slide blocks 28 matching the slide rails 13 are installed on the moving plates 27.

[0019] Working principle of the present invention: First, place the photovoltaic component in the conveying frame 52, then start the conveying slide rail 51 to move the conveying frame 52 to the best retrieval position, then the grabbing robot arm 2 starts to move, and the detection heads 24 on both sides detect the set grabbing position. When reaching the position, the grabbing cylinder 21 of the grabbing robot arm 2 stops moving. At this time, the grabbing cylinder 21 starts to work, and the suction cup 23 moves downward and absorbs the photovoltaic component and then retreats. Then the grabbing robot arm 2 continues to move in the opposite direction to transport the photovoltaic component to the top of the welding table 4. When the detection head 24 repeatedly detects the photovoltaic component to the best position, the grabbing robot arm 2 stops moving. At this time, the suction cup 23 moves downward again to place the photovoltaic component on the movable round table of the lifting platform 41. After the pressure sensor of the movable round table senses the photovoltaic component, it sends an electrical signal to the controller. The controller controls the suction cup 23 to immediately stop adsorbing the photovoltaic component. Then the movable round table drives the photovoltaic component to move downward for a distance to below the lower part of the positioning block 49. At this time, the positioning block 49 rotates to the top of the positioning block 46, and the displacement detector 7 starts to work to detect whether the position of the photovoltaic component can be correctly positioned on the positioning block 46, until the bottom surface of the photovoltaic component and the end surface of the positioning block 46 are level, and then the cylinder 15 is pushed to start working, and the side positioning plate 16 positions the four sides of the photovoltaic component, the positioning cylinder 45 is started, and the positioning block 46 positions the four corners of the photovoltaic component. Finally, the telescopic rotator 47 moves downward to further press the positioning block 49 on the photovoltaic component. At this time, the positioning is accurate, and then the position of the base 1 close to the column 14 can be loaded to the surface of the photovoltaic component by an additional loading robot arm (not shown in the figure). At this time, the welding robot arm 3 starts to work. According to the welding requirements, the welding head 34 can perform horizontal or vertical welding. After the welding is completed, the positioning device retreats. At this time, the photovoltaic component can proceed to the next process, with accurate positioning and good welding quality.

[0020] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A photovoltaic module welding device with precise alignment and effective protection of solar cells, comprising a base (1) and a welding platform (4), wherein the base (1) is provided with pillars (11), and fixed cross pillars (12) are provided at the top ends between the pillars (11), characterized in that: It also includes a conveying device connected to one side of the base (1) and a positioning device arranged on the welding table (4), and the fixed cross column (12) is respectively provided with a grasping device and a welding device corresponding to the conveying device and the positioning device.

2. A photovoltaic module welding device with accurate alignment and effective protection of solar cells as claimed in claim 1, characterized in that: The grasping device comprises a grasping mechanical arm (2), the head and tail of the grasping mechanical arm (2) are respectively equipped with a grasping cylinder (21) and a counterweight (29), the piston rod of the grasping cylinder (21) extends downward through the grasping mechanical arm (2), and a suction cup plate (22) is installed at the end of the extended end of the piston rod, and a connecting block (6) is installed at the lower part of the suction cup plate (22), the connecting blocks (6) are arranged in an array, and the front view of the connecting block (6) is an inverted T shape, and suction cups (23) are installed at both ends of the inverted T-shaped connecting block (6), and a line connector is arranged at the head, and a detection head (24) is provided between the connecting blocks (6) near the side of the suction cup plate (22).

3. A photovoltaic module welding device with accurate alignment and effective protection of solar cells as claimed in claim 1 or 2, characterized in that: The positioning device comprises a welding table (4) and a lifting table (41) installed in the middle of the welding table (4); a support block (42) is installed on the periphery of the movable circular table of the lifting table (41) through a connecting column; a pressure sensor is installed on the top of the movable circular table, surrounding the lifting table (41); a positioning table (44) is installed on the welding table (4); the positioning tables (44) are arranged in an orderly manner according to a rectangle; a positioning cylinder (45) is installed at the top end of the positioning table (44); a piston rod of the positioning cylinder (45) extends toward the lifting table (41); and a positioning block (46) is installed at the protruding end of the piston rod; the shape of the positioning block (46) is adapted to the photovoltaic module; a side positioning pressure plate (16) is provided between the positioning blocks (46); the side positioning pressure plate (16) is installed on the pushing cylinder (15); and the pushing cylinder (15) is installed on the column (14).

4. A photovoltaic module welding device with accurate alignment and effective protection of solar cells as claimed in claim 3, characterized in that: The welding device comprises a welding mechanical arm (3), a transmission pair is installed at the bottom of the welding mechanical arm (3), the transmission pair comprises a movable slide rail and a slide plate (32), a telescopic cylinder (33) is installed at the end of the slide plate (32), a piston rod of the telescopic cylinder (33) extends downward and is axially connected to a welding head (34), and a positioning detector (35) is installed on the side of the welding head (34).

5. A photovoltaic module welding device with accurate alignment and effective protection of solar cells as claimed in claim 4, characterized in that: The conveying device comprises conveying uprights (5) arranged in parallel, each of the conveying uprights (5) being provided with a conveying slide rail (51) on the top, the conveying frame (51) being slidably mounted on the conveying slide rail (51), the conveying frame (51) comprising a conveying slide column (53) and a bottom plate, and a protective plate (54) being provided at a conveying terminal close to the conveying slide rail (51), the protective plate (54) being mounted on the bottom platform (1).

6. A photovoltaic module welding device with accurate alignment and effective protection of solar cells as claimed in claim 5, characterized in that: The fixed cross column (12) is provided with a slide rail (13), the bottom of the grabbing robot arm (2) and the welding robot arm (3) are provided with a cross plate (25) and a connecting plate (31) respectively, the bottom of the cross plate (25) is provided with a rib plate (26) and a vertical plate, the connecting plate (31) and the vertical plate are provided with a moving plate (27), and the moving plate (27) is provided with a sliding block (28) matching the slide rail (13).

7. A photovoltaic module welding device with accurate alignment and effective protection of solar cells as claimed in claim 6, characterized in that: A cushion block (43) is provided on the top of the support block (42), and the cushion block (43) acts to support friction.

8. A photovoltaic module welding device with accurate alignment and effective protection of solar cells as claimed in claim 7, characterized in that: A telescopic rotator (47) is installed at the end of the positioning cylinder (45), the telescopic rod of the telescopic rotator (47) extends upward and is connected to one end of a rotating plate (48), and a positioning pressing block (49) is installed at the other end of the rotating plate (48). Displacement detectors (7) are installed on both sides of the positioning pressing block (49), and the displacement detectors (7) are used to detect whether the position is correct during the positioning process of transporting photovoltaic components.

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