A photovoltaic module serial welding and typesetting integrated production equipment

Abstract

The present invention discloses a photovoltaic module serial welding and typesetting integrated production equipment, including: a feeding, scribing, splitting and conveying device, a high temperature welding and curing device, and a battery small string typesetting mechanism. The feeding, scribing, splitting and conveying device feeds, scribing and splitting the battery cells to form battery small pieces, including: a battery cell feeding mechanism, a battery cell conveying and scribing mechanism, a battery cell splitting mechanism and a manipulator grabbing mechanism. Through the above method, the present invention provides a photovoltaic module serial welding and typesetting integrated production equipment, which is compatible with a variety of battery cell specifications, compatible with multi-grid line layouts, and compatible with a variety of component typesetting layouts, and meets various technologies such as stack welding to reduce the spacing between cells, from battery cell scribing, serial welding to typesetting integrated machine; improve the equipment's large-piece production capacity, improve the small string yield, improve the whole battery component yield, and reduce the manual rework rate.

Description

Technical Field

[0001] The present invention relates to the field of photovoltaic module production equipment, and in particular to photovoltaic module serial welding and typesetting integrated production equipment. Background Art

[0002] With the increasing application of solar power generation, the demand for photovoltaic modules is increasing. MBB multi-busbar, close-packed and other technologies are widely used. The existing equipment can no longer adapt to the increasingly diverse MBB technology, various string welding technologies to improve the efficiency of photovoltaic modules, and the needs of high-speed production. Traditional photovoltaic modules are large-scale welding, with less than 6 grid lines. At present, MBB technology superimposed on half-cell modules has a significant gain in improving module efficiency and is gradually becoming the mainstream of the market.

[0003] Even if the traditional string welding equipment can meet the MBB technology superposition half-cell module after modification, the production capacity will be halved because the cell is cut in half and the total number of cells doubles; at the same time, the number of small strings has doubled, and the layout of photovoltaic modules has also changed a lot. In order to improve the finished product yield of the module, various defective products in the small strings need to be picked out. The original typesetting machine does not have enough space to realize various detection functions (such as cell PL detection, small string white appearance detection and EL detection); at the same time, it cannot meet the demand for production capacity due to the increase in the number of small strings; the photovoltaic modules and typesetting equipment are re-optimized and integrated into one device to better meet the needs of the new process. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide a photovoltaic module string welding and typesetting integrated production equipment, which has the advantages of high reliability, precise positioning, compact structure, etc., and at the same time has broad market prospects in the application and popularization of photovoltaic module production equipment.

[0005] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0006] Provided is a photovoltaic module string welding and typesetting integrated production equipment, which includes: a loading, slicing, splitting and handling device, a high-temperature welding and curing device, and a battery small string typesetting mechanism.

[0007] The loading, slicing, splitting and transporting device loads, slicing and splitting the battery cells to form small battery cells, including: a battery cell feeding mechanism, a battery cell transporting and slicing mechanism, a battery cell splitting mechanism and a robot gripping mechanism;

[0008] The high-temperature welding curing device is used to weld the battery chips and the welding strips, including: a battery chip curing mechanism and a high-temperature conveying line;

[0009] Battery string layout mechanism: layout the welded battery strings.

[0010] In a preferred embodiment of the present invention, the battery cell feeding mechanism includes a material box conveyor line, a battery cell material box arranged on the conveyor line, a material box lifting mechanism, a battery cell lifting mechanism, an air blowing and slicing mechanism, a rotary material picking and unloading mechanism and a battery cell conveyor line. The material box conveyor line transfers the battery cell material box to the material box stop position, the battery cell lifting mechanism is used to lift and tighten the battery cell material box, the battery cell lifting mechanism is used to lift multiple groups of battery cells in the battery cell material box, the rotary material picking and unloading mechanism is used to absorb multiple groups of battery cells for positive pressure blowing by the air blowing and slicing mechanism, the battery cell conveyor line includes a front adsorption plate of the conveyor line and a rear adsorption plate of the conveyor line, the rotary material picking and unloading mechanism rotates the battery cell after blowing by 180° and then puts it into the front adsorption plate of the conveyor line, and the rear adsorption plate of the conveyor line extends to the bottom of the battery cell transporting and slicing mechanism.

[0011] In a preferred embodiment of the present invention, the cell transport and dicing mechanism comprises: a feeding vision system, a transport module base, a cell transport module, a cell correction mechanism, and a laser cutting mechanism. The feeding vision system is arranged above the end of the cell conveying line, the cell transport module is connected to the side of the transport module base, the cell correction mechanism is connected to the cell transport module to transport the cells on the cell conveying line and correct the cell, and the laser cutting mechanism is arranged on the transport module base to perform laser cutting on the products on the cell correction mechanism;

[0012] In a preferred embodiment of the present invention, the battery cell splitting and separating mechanism includes a post-slicing conveyor line, a post-slicing feeding detection sensor, a splitting mechanism, a separating mechanism, an A / B zone post-slicing conveyor line, an NG cell conveyor line and a post-slicing visual inspection mechanism. The battery cell transport module transports the battery cells after slicing to the post-slicing conveyor line. The post-slicing feeding detection sensor is used to detect whether the battery cells are in place. The splitting mechanism is installed on the separating mechanism. The separating mechanism drives the splitting mechanism to break the battery cells and separate the small battery cells that have been split by a certain distance and then deliver them to the A / B zone post-slicing conveyor line. The NG cell conveyor line is used to receive unqualified large battery cells detected by the feeding visual system.

[0013] In a preferred embodiment of the present invention, the battery cell curing mechanism includes a welding lampshade assembly, an upper pressing needle mechanism, a lower pressing needle mechanism, and an upper pressing needle lifting mechanism arranged below the welding lampshade assembly, the upper pressing needle mechanism and the lower pressing needle mechanism include multiple groups and are symmetrically arranged on the upper and lower sides of the battery string, the upper pressing needle lifting mechanism is arranged on the side of the high-temperature conveyor line and is fixedly connected to the upper pressing needle mechanism, the upper pressing needle mechanism and the lower pressing needle mechanism respectively correspond to the welding points on the upper and lower sides of the battery string to clamp the welding strips on the front and back sides with the battery string to form a whole, and the welding lampshade assembly is used to weld the battery string, the front welding strip and the back welding strip in series.

[0014] In a preferred embodiment of the present invention, the high-temperature conveyor line includes a welding support frame, a welding belt, a welding belt driving device, and a vacuum adsorption structure. The welding belt driving device is arranged on the welding support frame and drives the welding belt to operate to convey the battery string and the welding belt. The vacuum adsorption structure is arranged below the welding belt to ensure that the position of the battery string does not change during the transmission process. The vacuum adsorption structure includes a vacuum adsorption plate and vacuum adsorption holes. The vacuum adsorption holes are distributed on the vacuum adsorption plate. The welding belt operates closely against the vacuum adsorption plate. The welding belt is provided with air holes corresponding to the vacuum adsorption holes so that the battery string is always in an adsorption state during the transmission process. The welding belt guide groove is arranged on one or more of the welding belt, the vacuum adsorption plate or the fixed guide plate at the head of the welding belt, so that the welding belt under the battery cell is located in the welding belt guide groove to prevent the welding belt from shifting.

[0015] In a preferred embodiment of the present invention, the high-temperature conveyor line includes a welding platform and a paddle-type transport device, and a solder strip guide plate, a battery cell adsorption plate, a high-temperature welding table and a rear plate are arranged on the welding platform. The paddle-type transport device includes a translational transport paddle and a lifting paddle-type transport mechanism. The lifting paddle-type transport mechanism includes a transport guide rail, a paddle mechanism, a translational screw servo mechanism and a lifting screw servo mechanism. A preheating plate is provided at the bottom of the battery cell adsorption plate, and a high-temperature heating plate is provided at the bottom of the high-temperature welding table.

[0016] In a preferred embodiment of the present invention, the pressure block circulation mechanism includes a double-layer transmission line, each layer of the transmission line is placed with a solder ribbon pressure block, the front of the upper transmission line and the front of the lower transmission line are provided with a solder ribbon pressure block lifting and positioning mechanism, a pressure block placing and transporting module is arranged above the front of the transmission line, and a pressure block receiving and transporting module is arranged above the rear of the transmission line. The solder ribbon pressure blocks are grabbed and transported by the pressure block placing and transporting module, and a guiding mechanism is arranged on the transmission line to prevent the solder ribbon pressure blocks from deviating during the transportation process.

[0017] In a preferred embodiment of the present invention, the battery small string typesetting mechanism includes a typesetting transmission line, a battery small string typesetting grasping device, a typesetting X-axis moving mechanism, a typesetting vertical lifting mechanism, a typesetting Y-axis correction motor, a typesetting R-axis correction motor, a typesetting camera, and a typesetting conveying mechanism. The head end of the typesetting transmission line extends to the bottom of the string suction and transport mechanism. The typesetting R-axis correction motor drives the battery small string typesetting grasping device to rotate, and the typesetting Y-axis correction motor drives the typesetting R-axis correction motor and the battery small string typesetting grasping device to move along the Y-axis to complete the correction of the battery small string. The typesetting vertical lifting mechanism drives the typesetting Y-axis correction motor, the typesetting R-axis correction motor and the battery small string typesetting grasping device to rise and fall, and the typesetting X-axis moving mechanism drives the typesetting vertical lifting mechanism to translate all the structures located thereon to move along the X-axis.

[0018] The beneficial effects of the present invention are: compatible with various battery cell specifications, compatible with multi-grid line formats, compatible with various component layout formats, meeting various technologies of reducing the cell spacing such as stack welding, from battery cell dicing, string welding to layout integrated machine; improving the large-cell production capacity of the equipment, improving the yield of small strings, improving the yield of the entire battery component, and reducing the manual rework rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0020] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of a photovoltaic module serial welding and typesetting integrated production equipment of the present invention;

[0021] Figure 2 It is a structural schematic diagram of a preferred embodiment of the loading, slicing, splitting and transporting device of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the battery cell feeding mechanism in the present invention;

[0023] Figure 4 It is a schematic diagram of the overall structure of a preferred embodiment of the battery cell transport and dicing mechanism of the present invention;

[0024] Figure 5 It is a structural schematic diagram of a dicing vision system in a cell transport and dicing mechanism of the present invention;

[0025] Figure 6 It is a structural schematic diagram of a battery cell transport module in the battery cell transport and dicing mechanism of the present invention;

[0026] Figure 7 It is a structural schematic diagram of a cell sheet deviation correction mechanism in a cell sheet transport and dicing mechanism of the present invention;

[0027] Figure 8 It is an overall schematic diagram of the battery sheet splitting mechanism in the present invention;

[0028] Fig. 9 It is a structural schematic diagram of a cell splitting mechanism in the cell splitting mechanism of the present invention;

[0029] Fig.10 It is a structural schematic diagram of the mechanical hand grabbing mechanism of the present invention;

[0030] Fig.11It is a schematic diagram of the overall structure of the high temperature conveying line structure 2 of the present invention;

[0031] Fig.12 It is a partial structural schematic diagram of the high temperature conveying line structure 2 of the present invention;

[0032] Fig.13 It is a partial structural schematic diagram of the high temperature conveying line structure 2 of the present invention;

[0033] Fig.14 It is a structural schematic diagram of the vacuum adsorption structure in the second high-temperature conveying line structure of the present invention;

[0034] Fig.15 It is an exploded view of the axonometric view of the cell sheet curing mechanism of the present invention;

[0035] Fig.16 It is a schematic diagram of the welding lampshade structure of the present invention;

[0036] Fig.17 is an exploded view of the welding lamp cover of the present invention;

[0037] Fig.18 It is a schematic diagram of the overall structure of the high temperature conveying line structure 1 of the present invention;

[0038] Fig.19 It is a structural schematic diagram of a lifting paddle-type transport mechanism in a high-temperature conveyor line structure 1 of the present invention;

[0039] Fig. 20 It is a structural schematic diagram of the paddle mechanism in the high-temperature conveyor line structure 1 of the present invention;

[0040] Fig.21 It is a structural schematic diagram of a battery small string cutting detection mechanism of the present invention;

[0041] Fig. 22 It is a structural schematic diagram of the battery small string typesetting mechanism of the present invention. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] See also Figure 1-22 , the embodiment of the present invention includes:

[0044] A photovoltaic module string welding and typesetting integrated production equipment, which is a scribing, string welding, and typesetting integrated machine. It can be laid out according to the process flow of incoming materials, testing, scribing, splitting, laminating, curing, unloading, small string testing, typesetting, and unloading after typesetting. It can also meet the string welding of whole and half cells by replacing some parts to meet different usage requirements. The raw materials of the equipment are rolled solder ribbon rolls, large cells, auxiliary soldering flux, and transparent plates (usually glass plates) with EVA laid; the tooling is a solder ribbon press block.

[0045] A photovoltaic module string welding and typesetting integrated production equipment, the main structure of which includes: a loading, slicing, splitting and handling device, a high-temperature welding and curing device, and a battery small string typesetting mechanism.

[0046] The loading, slicing, splitting and transporting device loads, slicing and splitting the battery cells to form small battery cells, and mainly includes: a battery cell feeding mechanism 100, a battery cell transporting and slicing mechanism 200, a battery cell splitting mechanism 300 and a robot gripping mechanism 400.

[0047] The high-temperature welding curing device is used to weld the battery cells and the welding strips, and mainly includes: a battery cell curing mechanism and a high-temperature conveying line.

[0048] The battery string layout mechanism layouts the welded battery strings.

[0049] (1) Loading, slicing, splitting and handling device

[0050] (1.1) Cell feeding mechanism

[0051] The battery cell feeding mechanism 100 includes a material box conveyor line 1001, a battery cell material box 1002 arranged on the conveyor line, a material box lifting mechanism 1003, a battery cell lifting mechanism 1004, an air blowing and separating mechanism 1005, a rotary material discharging mechanism 1006 and a battery cell conveyor line 1007. The material box conveyor line conveys the battery cell material box to the material box stop station 1008. The battery cell lifting mechanism is used to lift and tighten the battery cell material box. The battery cell lifting mechanism is used to lift multiple groups of battery cells in the battery cell material box. The rotary material discharging mechanism is used to suck multiple groups of battery cells to The air blowing and slicing mechanism is provided with positive pressure blowing, and the rotating material taking and unloading mechanism includes a rotating drive motor 1009, a hollow rotating platform 1010 and a suction cup assembly 1011 arranged below the hollow rotating platform. The air blowing and slicing mechanism includes a sticky film detection sensor 1014 and a positive pressure blowing device 1015. The blowing port in the positive pressure blowing device is aimed at the battery cell grasped by the suction cup assembly to perform a blowing operation. The suction cup assembly grasps the battery cell and rotates 180° before delivering it to the battery cell conveying line. The second half of the battery cell conveying line extends to the bottom of the battery cell transporting and slicing mechanism.

[0052] The cell conveyor line includes a conveyor line support frame, a conveyor line drive mechanism, an adsorption belt, a front cell adsorption plate 2011, a rear cell adsorption plate 2012, and an incoming material detection sensor. The rear part of the conveyor line drive mechanism and the conveyor line support frame is arranged on the base of the handling module. The front cell adsorption plate and the rear cell adsorption plate are arranged on the conveyor line support frame. The adsorption belt surrounds and is tightly attached to the outer periphery of the front cell adsorption plate and the rear cell adsorption plate. The conveyor line drive mechanism drives the adsorption belt to operate to convey the cell. At the same time, the adsorption belt, the front cell adsorption plate and the rear cell adsorption plate are provided with conveying adsorption holes to prevent the cell from deflecting or falling. The incoming material detection sensor can be arranged on the conveyor line support frame or the front cell adsorption plate, or it can be located above the adsorption belt. Among them, the front cell adsorption plate and the rear cell adsorption plate can be an integrated structure or a split structure.

[0053] Working principle of the battery cell feeding mechanism: manually place multiple groups (N≤5) of two-station battery cell boxes on the box conveyor line, transfer the battery cell box to the box stop station, the tensioning cylinder in the box lifting mechanism lifts the box, tightens the box to prevent shaking, the sensor on the box conveyor line detects the box in place and stops, the battery cell lifting mechanism lifts two groups of multiple battery cells (N≤220), and stops after lifting to a certain height; the rotary drive motor drives the hollow rotary platform, driving the four-station suction cup assembly to grab the battery cell, the sticky detection sensor detects the grabbed battery cell, The positive pressure blowing device includes two blowing ports and is connected to an external air source to perform positive pressure blowing on the battery cells to prevent the battery cells from sticking to each other and causing fragments. After the blowing is completed, the hollow rotary drive mechanism rotates 180° to place two battery cells on the front adsorption plate of the conveyor line. The rotary material picking and placing mechanism repeats the work, and the battery cell lifting mechanism lifts the battery cells one by one. When the sensor on the material box conveyor line detects that there is no battery cell in any of the two station material boxes, the material box lifting mechanism descends, and the empty material box is transferred to the manual material box picking station, and the material box with material is transferred to the material box lifting station, and the above work is repeated.

[0054] The battery cell transmission line drive mechanism works, and the adsorption belt rotates to transmit the battery cell to the adsorption plate behind the conveyor line. During the transmission process, it passes through the line scan camera 2017 in the feeding vision system. The line scan camera takes pictures to detect defects on the back of the battery cell.

[0055] (1.2) Cell transport and dicing mechanism

[0056] The cell transport and dicing mechanism 200 includes: a loading visual system 2002 , a transport module base 2003 , an A-area cell transport module 2004 , a B-area cell transport module 2005 , an A-area cell deviation correction mechanism 2006 , a B-area cell deviation correction mechanism 2007 , and a laser cutting mechanism 2008 .

[0057] The loading vision system is arranged above the end of the battery cell conveyor line, the battery cell handling module in area A and the battery cell handling module in area B are relatively arranged on both sides of the handling module base, the battery cell correction mechanism in area A is connected to the battery cell handling module in area A, and the battery cell correction mechanism in area B is connected to the battery cell handling module in area B to carry the battery cells on the battery cell conveyor line and correct the battery cells, and the laser cutting mechanism is arranged on the handling module base to laser cut the products on the battery cell correction mechanism in area A / B.

[0058] The feeding vision system comprises an area array camera 2013, an area array camera strip light source 2014, a light source cover 2015, a backlight source 2016, a line scan camera 2017, and a line scan camera strip light source 2018. The line scan camera and the line scan camera strip light source are arranged between the front adsorption plate and the rear adsorption plate of the battery cell to detect defects on the back of the battery cell. The light source cover is arranged above the rear adsorption plate of the battery cell. The area array camera and the area array camera strip light source are arranged in the light source cover. The backlight source is arranged on the bottom surface or below the rear adsorption plate of the battery cell (and between the upper and lower adsorption belts) to judge the front defects of the battery cell and determine the grid line coordinates of the battery cell.

[0059] The structure of the cell handling module in area A is the same as that of the cell handling module in area B. The cell handling module includes a screw module 2019, a handling connection frame 2020, and a Z-axis lifting mechanism 2021. The screw module is connected to the handling connection frame and drives the handling connection frame to move back and forth. The Z-axis lifting mechanism is arranged on the handling connection frame and drives the cell correction mechanism to move up and down. The Z-axis lifting mechanism can adopt a variety of existing drive devices such as a cylinder, an oil cylinder, and a screw.

[0060] The structure of the battery cell correction mechanism in area A is the same as that of the battery cell correction mechanism in area B. The battery cell correction mechanism includes an X-axis adjustment slide 2022, an R-axis adjustment slide 2023, a correction adsorption plate 2024, a correction suction cup, a suction cup adjustment mechanism 2026, a correction suction hole and a correction support frame 2027, wherein the correction support frame is connected to the Z-axis lifting mechanism, the X-axis adjustment slide is arranged on the correction support frame, the X-axis adjustment slide is connected to the R-axis adjustment slide, and drives the R-axis adjustment slide to translate along the X-axis, the R-axis adjustment slide is connected to the adsorption plate, and drives the correction adsorption plate to rotate, and the correction suction cup, suction cup adjustment mechanism and correction suction hole for adsorbing the battery cell are arranged on the correction adsorption plate, wherein the correction suction cup can be arranged at the four corners of the adsorption plate, and the suction cup adjustment mechanism is connected to the correction suction cup.

[0061] Since the battery cells have different formats (158-210), it is necessary to select half-cell cutting and multiple-cell cutting (N>2) according to the format, so the laser cutting mechanism can be divided into a half-cell cutting mechanism and a multiple-cell cutting mechanism (the number of cells after cutting is greater than 2).

[0062] The half-sheet cutting mechanism includes a laser and focusing mirror optical assembly, an X-axis laser automatic adjustment slide, a Z-axis laser automatic adjustment mechanism and a half-sheet dust collection mechanism. The laser and focusing mirror optical assembly is connected to the X-axis laser automatic adjustment slide through a laser mounting frame. The Z-axis laser automatic adjustment mechanism drives the X-axis laser automatic adjustment slide to move up and down (the Z-axis laser automatic adjustment mechanism can be fixed on the top frame) to automatically complete the focus adjustment of the laser. The half-sheet dust collection mechanism is arranged on the upper part of the laser and focusing mirror optical assembly. Among them, the Z-axis laser automatic adjustment mechanism can adopt a variety of driving devices such as a Z-axis slide, a lifting cylinder, etc.

[0063] The multi-piece cutting mechanism includes two structures:

[0064] Structure 1: A three-slice cutting mechanism, which includes a laser and focusing mirror optical component, an X-axis laser automatic adjustment slide, a Z-axis laser automatic adjustment slide, a Z-axis automatic adjustment mechanism and a three-slice dust suction mechanism. The three-slice laser cutting mechanism includes two lasers and focusing mirror optical components. The X-axis laser automatic adjustment slide and the Z-axis laser automatic adjustment slide cooperate to drive the two lasers and focusing mirror optical components to translate and lift. The X-axis laser automatic adjustment slide adjusts the spacing between the two lasers and focusing mirror optical components to adapt to different cutting spacing requirements of the battery cells. At the same time, after the Z-axis laser automatic adjustment slide is debugged, the focal points of the two lasers and focusing mirror optical components are ensured to be coplanar so as to maintain the consistency of cutting. The Z-axis automatic adjustment mechanism can drive the laser and focusing mirror optical component, the X-axis laser automatic adjustment slide and the Z-axis laser automatic adjustment slide to lift and lower through the automatic adjustment frame to facilitate cutting.

[0065] Any one or more of the two laser and focusing mirror optical components are connected to the X-axis laser automatic adjustment slide, and the Z-axis laser automatic adjustment slide can be efficiently connected to any one or more laser and focusing mirror optical components, and can also be connected to any one or more X-axis laser automatic adjustment slides, so as to meet the needs of real-time adjustment of the positions and respective heights of the two laser and focusing mirror optical components.

[0066] Structure 2: Multi-piece cutting mechanism, which includes a laser and focusing mirror optical component, an X-axis laser automatic adjustment slide, a Z-axis automatic adjustment mechanism, a beam splitter for dividing one laser into N lasers, and a dust suction mechanism. The laser and focusing mirror optical component is connected to the X-axis laser automatic adjustment slide through a laser mounting frame, and the Z-axis laser automatic adjustment mechanism drives the X-axis laser automatic adjustment slide to move up and down. The beam splitter is connected to the laser emitting end of the laser and focusing mirror optical component. The dust suction mechanism is arranged on the upper part of the laser and focusing mirror optical component. The beam splitter divides one laser into N lasers, and the optical path can be freely selected or used simultaneously to complete multi-piece cutting of battery cells.

[0067] Among them, the laser and focusing mirror optical assembly includes a laser body, an optical device mounting seat, a beam expander, a focusing mirror, a laser protective glass, a positive pressure blowing device, an air blowing port, an air blowing cavity, and a laser port. The laser body for emitting laser is connected to the laser mounting frame, the optical device mounting seat is arranged on the top of the laser mounting frame, the air blowing cavity, the laser protective glass, the focusing mirror, and the beam expander are arranged in the optical device mounting seat from top to bottom in sequence, the top surface of the optical device mounting seat is provided with a laser port connected to the air blowing cavity, the side wall of the optical device mounting seat is provided with an air blowing port connected to the air blowing cavity, and the positive pressure blowing device is connected to the air blowing port to prevent cutting dust from affecting the operation of the laser and prolong the service life of the laser.

[0068] The dust suction mechanism includes a dust suction hood, a dust suction port, a laser cutting hole that allows the laser to pass through, and a dust exhaust duct. The dust suction hood is arranged on the top of the laser and focusing lens optical components. The top surface of the dust suction hood is provided with the laser cutting hole and multiple dust suction ports. The dust exhaust duct is connected to the dust suction hood to remove dust in time.

[0069] (1.3) Cell splitting mechanism

[0070] The cell splitting and slicing mechanism 300 includes a post-slicing conveyor line 3001, a post-slicing feeding detection sensor 3002, a splitting mechanism 3003, a slicing mechanism 3004, an A / B zone post-slicing conveyor line 3005, an NG cell conveyor line 3006 and a post-slicing visual inspection mechanism 3007. The cell transport module transports the cell after slicing to the post-slicing conveyor line. The post-slicing feeding detection sensor is used to detect whether the cell is in place. The splitting mechanism is installed on the slicing mechanism. The slicing mechanism drives the splitting mechanism to break the cell and separate the small cell pieces after splitting by a certain distance and then put them into the A / B zone post-slicing conveyor line. The NG cell conveyor line is used to receive unqualified large cell pieces detected by the feeding visual system. The robot grabbing mechanism receives the defect signal of the small cell pieces detected by the post-slicing visual inspection mechanism and grabs the small cell pieces after splitting.

[0071] Specifically, the slicing mechanism includes: an X-axis slicing module 3008, a Y-axis slicing module 3009 and a Z-axis slicing and rotating module 3010, wherein the Z-axis slicing and rotating module is mounted on the X-axis slicing module, the X-axis slicing module is mounted on the Y-axis slicing module, the slicing mechanism is mounted on the Z-axis slicing and rotating module, and the slicing mechanism includes an upper top plate 3011, an I-shaped support plate 3012, a first slicing plate 3013, a second slicing plate 3014, an electric The cell plate suction cup 3015, the split spacing drive mechanism and the split driving mechanism, the upper top plate is fixedly connected to the first split plate and locked on the Z-axis chip picking and rotation module, the I-type support plate is slidably connected to the bottom of the upper top plate, the second split plate is slidably connected to the first split plate and is rotationally connected to the I-type support plate through a rotating shaft, the split driving mechanism drives the second split plate to move to break off the adsorbed battery cells, and the split spacing drive mechanism is used to separate the small battery cells after splitting.

[0072] Specifically, the split drive mechanism includes a split cylinder 3016 connected to the I-type support plate, a split limit plate 3017 arranged above the second split plate, and a split spring 3018, one end of the split spring is fixedly connected to the second split plate, and the other end is fixedly connected to the upper top plate; the split spacing drive mechanism includes a spacing cylinder 3019, a linear guide rail 3020 and a buffer 3021 arranged between the upper top plate and the I-type support plate, the spacing cylinder can push the I-type support plate to drive the second split plate to move horizontally along the direct guide rail, and the buffer is used to limit the horizontal movement of the I-type support plate.

[0073] The working principle of the battery cell splitting mechanism: after the diced battery cell is transported to the post-dicing conveyor line, the post-dicing feeding detection sensor detects that the battery cell is in place, and transmits the battery cell to the splitting grabbing station, and the detected uncut battery cell flows to the NG sheet conveyor line; the Z-axis picking and rotating module drives the splitting mechanism to adsorb the battery cell, and the splitting drive mechanism adsorbs the laser-cut battery cell through the first splitting plate, the second splitting plate and the battery plate suction cup. After the adsorption is completed, the splitting cylinder contracts upward, and the splitting spring pulls the second splitting plate to bend upward at a certain angle to break the battery cell, and the spacing cylinder moves horizontally to push the second splitting plate to move along the linear guide rail to separate the split small battery cells by a certain distance, which is convenient for the subsequent robot hand to grab the sucker to work. After the spacing cylinder moves a certain distance, the splitting cylinder moves downward to support the limit plate to ensure that the first splitting plate and the second splitting plate remain horizontal. After the above actions are completed, the battery cell is put in, the spacing cylinder contracts, returns to the initial position, and the above operations are repeated in sequence.

[0074] The X-axis slicing module in the slicing mechanism drives the splitting mechanism to place the battery cells into the A / B area slicing conveyor line respectively. While the X-axis slicing module moves, the Z-axis retrieval and rotation module rotates 90° to make the main grid line of the battery cell parallel to the Y-axis direction.

[0075] The post-slicing conveyor line transfers the battery cell to the backlight adsorption station 3022 of the post-slicing visual inspection mechanism. The area array camera in the post-slicing visual inspection mechanism takes pictures, locates and detects small battery cells, and takes three small pieces each time. According to the feeding counting signal of the slicing mechanism in the PLC control system and the number of movements of the A / B zone post-slicing conveyor line belt, the half-cell rotation mechanism 3023 adsorbs the small piece and rotates 180° to adjust the direction of the small battery cell to make the chamfer direction consistent. It should be noted that the half-cell rotation mechanism is not limited to a specific structure, and it includes components such as a suction cup assembly and a rotating cylinder in the prior art.

[0076] (2) High temperature welding curing device

[0077] (2.1) Cell curing mechanism

[0078] The battery sheet curing mechanism includes: a welding lampshade assembly 80, an upper pressing needle mechanism 81, a lower pressing needle mechanism 82, an upper pressing needle lifting mechanism 83, and a battery string 84, wherein the upper pressing needle mechanism and the lower pressing needle mechanism include multiple groups and are symmetrically arranged on the upper and lower sides of the battery string, and the upper pressing needle lifting mechanism is arranged on the side of the high-temperature conveying line 85 and is fixedly connected to the upper pressing needle mechanism. The upper pressing needle mechanism and the lower pressing needle mechanism correspond to the welding points on the upper and lower sides of the battery string respectively to clamp the welding strips on the front and back sides and the battery string to form a whole. The welding lampshade assembly is used for The battery string, the front welding strip and the back welding strip are welded in series. The battery string is arranged below the welding lampshade assembly and between the upper pressing needle mechanism and the lower pressing needle mechanism. The front of the welding lampshade assembly is the unwelded battery cell, and the rear of the welding lampshade assembly is the welded battery cell. The front welding strip and the back welding strip are arranged on the upper and lower surfaces of the battery cell, which are used to weld the upper and lower surfaces of two adjacent battery cells and then connect them in series to form a battery string. The battery string can be arranged in one string or multiple strings. The battery cell curing mechanism can weld multiple battery cells on multiple rows of battery strings at the same time, which can improve the production capacity of the equipment.

[0079] The welding lampshade assembly 80 includes a lampshade body 801, a fan 802 arranged on the lampshade body, a mirror reflector 803 arranged below the fan, and multiple infrared heating lamps 804. The infrared heating lamps adopt an extended structure. The extended infrared heating lamps can ensure that the battery cells can quickly reach the welding temperature when multiple battery strings are welded at the same time, thereby improving the production efficiency of the equipment. The infrared heating lamps are arranged into multiple cylinders, and can also be arranged into a multi-point matrix or a multi-segment cylinder. The power of each point infrared lamp or each segment infrared lamp can also be independently controlled to achieve a more uniform heating effect.

[0080] Among them, the mirror surface of the mirror reflector is set to face the infrared heating lamp tube, which can reduce the heat loss of the infrared heating lamp tube. A number of air holes 805 are evenly arranged on the mirror reflector plate, and a surrounding edge 806 is provided above the mirror reflector plate. The airflow from the fan to the mirror reflector plate is evenly restricted in the surrounding edge and blows downward from the air holes. After the airflow is heated by the infrared heating lamp tube, it continues to heat the battery cell downward.

[0081] A compressed air blowing hole 807 is arranged obliquely downward at the lower edge of the mirror reflector, and an exhaust hood 808 is also arranged on the periphery of the lampshade body. The exhaust hood draws air outward from the lampshade body, and the direction of the positive pressure blowing hole is toward the exhaust hood. Due to the siphon effect of the airflow, the airflow from the compressed air blowing hole can drive the airflow after heating the battery cell to enter the exhaust hood, thereby completing the circulation of the airflow in the lampshade body, preventing local heat accumulation in the lampshade body from causing uneven temperature inside the lampshade body and affecting the welding effect. In addition, the circulation of the airflow in the lampshade body can also take away impurities such as volatile organic compounds generated by high temperature, prevent the crystallization of organic matter in the lampshade body, and keep the lampshade body clean.

[0082] Specifically, a temperature sensor 809 is disposed inside the lampshade body to monitor the temperature change of the battery cell string during welding, and adjust the power of the infrared heating lamp according to the temperature change so that the battery cell quickly reaches the welding temperature.

[0083] The upper pressing needle mechanism has the same structure as the lower pressing needle mechanism, including: an upper pressing plate, a plurality of guide holes arranged on the upper pressing plate, a pressing needle plunger arranged in the guide holes, and a spring sleeved on the pressing needle plunger. The spring is arranged below the guide hole, which can extend the service life of the spring. The end face of the pressing needle plunger in contact with the battery string is a concave structure or a pointed structure, which can reduce the contact area between the pressing needle plunger and the welding strip, reduce the heat loss of the welding strip during welding, and shorten the welding time. The lower pressing needle mechanism includes a pressing needle plunger with the same structure as the upper pressing needle mechanism but in the opposite direction. There is more than one set of upper and lower pressing needle mechanisms, which correspond to the front and back sides of one or more battery strings below the welding lampshade assembly, respectively, so as to meet the one-time welding of one or more battery strings. A ceramic cap made of ceramic insulation material can also be sleeved on the pressing needle to further reduce heat loss during welding.

[0084] Specifically, the lower pressing needle mechanism is arranged in the high-temperature conveyor line, and a lifting cylinder is arranged below the lower pressing needle mechanism. When the high-temperature conveyor line conveys the battery string, under the action of the lifting cylinder, the surface of the pressing needle plunger of the lower pressing needle mechanism is lower than the lower surface of the welding strip, which facilitates the transmission of the battery string.

[0085] The pressure needle plungers of the upper pressure needle mechanism and the lower pressure needle mechanism are respectively located at the corresponding welding point positions on the battery cell. When the battery string is transmitted and welding begins, the pressure needle plunger of the lower pressure needle mechanism will be lifted up by the cylinder and cooperate with the pressure needle plunger in the lowered upper pressure needle mechanism to press the soldering strip above the battery cell, the battery cell, and the soldering strip below the battery cell together, and weld the three together when the welding lampshade assembly is heated.

[0086] The upper pressure needle lifting mechanism adopts the crank slider mechanism in the prior art, including a slider, a connecting rod and a power shaft. The slider is locked and fixed on the side of the upper pressure plate. The lowest point of the slider movement is set as the contact point between the pressure needle plunger and the battery cell. By selecting a suitable connecting rod length and a movement angle of the power shaft, the slider speed at this time is minimized, which can reduce the impact of the pressure needle plunger on the battery cell during welding and reduce the risk of hidden cracks in the battery cell.

[0087] Compared with the original battery cell welding mechanism, it can weld multiple battery cells of multiple battery strings at the same time, improving the equipment production capacity. By lengthening the infrared heating lamp tube and optimizing the air flow in the welding lampshade, it can not only improve the welding heating efficiency but also ensure uniform heating. The plunger-type upper and lower pressure needle mechanisms can ensure uniform welding pressure on the front and back of the battery cell, while reducing the mechanical impact on the battery cell during welding.

[0088] (2.2) High temperature conveyor line

[0089] The high temperature conveyor line 85 is used to convey the unwelded cells to the bottom of the welding lampshade assembly, and convey the already welded cells out of the welding lampshade assembly. The high temperature conveyor line can convey a distance of one cell width or a distance of multiple cell widths at a time. The high temperature conveyor line includes two different structures, and when in use, any one of them can be selected according to production and processing needs.

[0090] (2.2.1) Structure 1

[0091] A high-temperature conveyor line consists of two lines, A and B. The structure of production line A and production line B is symmetrical. The two lines are welded synchronously, and the production efficiency is doubled. Its structure consists of a welding platform and a paddle-type transport device. An infrared temperature sensor is set under the welding platform to monitor the temperature of the back of the battery cell.

[0092] A welding ribbon guide plate 19, a battery cell adsorption plate 12, a high-temperature welding platform 16 and a rear plate 22 are arranged on the welding platform. The welding ribbon guide plate, the battery cell adsorption plate, the high-temperature welding platform and the rear plate are all provided with a guide groove for accommodating the lower welding ribbon to ensure that the lower welding ribbon does not deviate during the welding process. The guide groove is a groove-shaped structure.

[0093] The solder ribbon 600 is clamped by the clamping claws and enters the battery cell adsorption plate from the solder ribbon guide plate. Both the solder ribbon guide plate and the battery cell adsorption plate are provided with guide grooves for accommodating the solder ribbon 600. Except for the clamping length of the head, the rear half of the solder ribbon is always kept in the guide groove. The battery cell is placed on the battery cell adsorption plate by the robotic arm. The battery cell adsorption plate is connected to a vacuum to adsorb and fix the battery cell. The robotic claws place the solder ribbon pressing block 66 onto the upper solder ribbon and the battery cell. The pressing pin on the solder ribbon pressing block presses down the upper solder ribbon to make it close to the battery cell.

[0094] The rear half of the front welding strip is placed in the guide groove of the battery cell adsorption plate, the battery cell is placed above the battery cell adsorption plate, the front half of the rear welding strip is placed on the battery cell, and the welding strip pressing block is placed on the welding strip and the battery cell. A pressing pin and a magnet are provided on the welding strip pressing block, and the pressing pin presses the upper welding strip. When the welding strip pressing block is placed on the conveying line, the magnet is adsorbed and fixed at the gap position between the inner adsorption plate 13 and the outer adsorption plate 14.

[0095] The paddle-type transport device includes a translational transport paddle 21 and a lifting paddle-type transport mechanism 11. The lifting paddle-type transport mechanism 11 includes a transport guide rail 111, a paddle mechanism 112, a translation screw servo mechanism 113 and a lifting screw servo mechanism. When the translation motor is activated, it drives the transport mechanism to translate one or two battery cell spacings.

[0096] Adjacent translational transport blades are connected by a contraction joint mechanism 211, which includes a floating connection piece, a connection bottom piece and equal height screws.

[0097] The paddle mechanism includes a lifting guide rail 1121, a push guide rail 1122, a slider fixing plate 1123, a rocker rod 1124, a connecting plate 1125, a push plate 1126 and a lifting plate 1127. The lifting screw servo mechanism is connected to the slider fixing plate 1123. When the lifting motor is activated, the push plate 1126 moves horizontally along the push guide rail 1122, and the lifting plate 1127 is driven to move up and down along the lifting guide rail 1121 through the rocker rod 1124.

[0098] When the lifting motor is activated, the lifting plate 1127 and the translational transport paddle fixed thereto are lifted together, the battery cells and solder strip pressing blocks placed on the battery cell adsorption plate rise, and the magnets detach from the inner adsorption plate 13 and the outer adsorption plate 14 and are instead adsorbed on the translational transport paddle.

[0099] After the battery cell is lifted to a certain height, the translation motor starts to operate, and the translation transport paddle and all the battery cells and solder ribbon pressing blocks on it move forward together, and move one or two battery cell spacings along the transport guide rail 111; after the position is reached, the translation transport paddle descends, the battery cell is put back on the battery cell adsorption plate, the solder ribbon pressing blocks are adsorbed and fixed on the inner adsorption plate 13 and the outer adsorption plate 14 again, and the translation transport paddle is separated from the magnet.

[0100] Preferably, the magnets are respectively arranged at two ends of the welding strip pressing block, and are located between the gap between the inner adsorption plate and the outer adsorption plate.

[0101] After the translational transport paddle reaches the lowermost position, the translational motor moves in the reverse direction, and the translational transport paddle returns to the original position, and the battery cell and the solder ribbon pressing block remain on the battery cell adsorption plate or the high-temperature soldering table.

[0102] A preheating plate 18 is provided at the bottom of the cell adsorption plate, and a high-temperature heating plate is provided at the bottom of the high-temperature welding station. The cell and the welding ribbon pressing block are gradually heated during the process of moving from the cell adsorption plate to the high-temperature welding station.

[0103] (2.2.2) Structure 2

[0104] The high-temperature conveyor line can simultaneously transmit multiple strings of welding conveyor lines, and its structure includes: a welding support frame 61, a welding belt 62, a welding belt driving device 63, and a vacuum adsorption structure 64. The welding belt driving device is arranged on the welding support frame and drives the welding belt to operate to transport the battery string 600 and the welding belt 601. The vacuum adsorption structure is arranged under the welding belt to ensure that the position of the battery string does not change during the transmission process.

[0105] A soldering ribbon pressing block 66 is also provided above the battery cell. The soldering ribbon pressing block is magnetically connected to the vacuum adsorption plate to press all the soldering ribbons above the battery cell onto the battery cell to prevent the soldering ribbons from deviating.

[0106] Only one vacuum adsorption structure may be provided under the multiple strings of battery cells on the welding belt, or an independent vacuum adsorption structure may be provided under each string of battery cells according to the size specifications of different battery strings to ensure a good adsorption effect.

[0107] The vacuum adsorption structure 64 includes a vacuum adsorption plate 641, a vacuum adsorption hole 642, and a vacuum generating device. A plurality of vacuum adsorption holes connected to the vacuum generating device are evenly distributed on the vacuum adsorption plate. The vacuum adsorption plate is arranged between the welding belts, and the upper welding belt runs close to the vacuum adsorption plate. The adsorption holes on the vacuum adsorption plate 4a correspond to the air holes 611 on the welding belt, which can ensure that the battery string is always in an adsorption state during the transmission process, thereby ensuring the transmission accuracy of the battery string.

[0108] A heating device 643 is also provided below the welding belt or above the battery string, which can heat the battery string on the welding belt, thereby increasing the temperature of the battery string before welding, shortening the welding time of the battery string on the equipment, and increasing the equipment capacity. When the heating device is located below the welding belt, the heating device can be an integrated structure with the vacuum adsorption device, or can be independently provided with the vacuum adsorption device.

[0109] A wedge adjustment device 67 is also provided at the bottom of the welding conveyor line. The wedge adjustment device includes a movable wedge and a fixed wedge seat. The movable wedge is connected to the fixed wedge seat, and the adjustment protrusion on the movable wedge cooperates with the adjustment groove on the fixed wedge seat. By adjusting the relative position of the movable wedge and the fixed wedge seat, the horizontal adjustment of the welding conveyor line can be achieved to ensure the flatness of the welding conveyor line and the transmission accuracy of the battery string. When replacing the welding belt, the movable wedge can be directly removed. Specific embodiment 1

[0111] Only one welding belt is arranged on the welding support frame.

[0112] The head of the welding support frame is fixedly provided with a welding strip introduction plate 68, and the welding strip introduction plate is provided with a welding strip guide groove 69, and the groove width X of the welding strip guide groove is set to be slightly larger than the width x' of the welding strip, and the thickness Y of the welding strip guide groove is set to be slightly larger than the thickness y' of the welding strip. When the battery string is transmitted on the welding belt, the welding strip under the battery cell will be located in the welding strip guide groove of the welding strip introduction plate, which can prevent the welding strip from shifting. The welding strip guide groove can ensure the position accuracy of the welding strip on the battery string relative to the battery cell, wherein the welding strip introduction plate remains fixed during the transmission of the welding belt, and the guide groove does not need to be transmitted together with the battery string.

[0113] The head end of the solder strip guide groove on the solder strip introduction plate is connected with an introduction groove 610 to facilitate the solder strip to enter the solder strip guide groove. Specific embodiment 2

[0115] A plurality of welding belts are arranged on the welding support frame.

[0116] At this time, the spacing x between two adjacent welding belts (i.e., the gap width x) is slightly larger than the width x' of the welding belt, and the thickness y of each welding belt is slightly larger than the thickness y' of the welding belt. When the battery string is transmitted on the welding belt, the welding belt under the battery cell will always be located in the gap 612 between the two welding belts, which can prevent the welding belt from shifting.

[0117] A plurality of welding belt guide grooves corresponding to the gaps between the welding belts can also be provided on the vacuum adsorption plate, so that the welding belt under the battery cell is located in the welding belt guide grooves and the gaps, further preventing the deviation of the welding belt.

[0118] In order to further guide and correct the welding ribbon, a welding ribbon introduction plate is fixedly arranged at the head of the welding support frame, and a welding ribbon guide groove is also arranged on the welding ribbon introduction plate. The welding ribbon guide groove on the welding ribbon introduction plate corresponds to the gap, and the head end of the welding ribbon guide groove on the welding ribbon introduction plate is connected with an introduction groove. Specific embodiment three

[0120] Only one welding belt is arranged on the welding support frame.

[0121] A welding ribbon introduction plate is fixedly arranged at the head of the welding support frame, and a welding ribbon guide groove is arranged on the welding ribbon introduction plate. In addition, a welding ribbon guide groove is also arranged on the welding belt itself or on the welding belt and the vacuum adsorption plate. The welding ribbon guide groove on the welding belt corresponds to the welding ribbon guide groove on the welding ribbon introduction plate, the welding belt and the welding ribbon guide groove on the vacuum adsorption plate correspond to each other, and an introduction groove is connected to the head end of the welding ribbon guide groove on the welding ribbon introduction plate.

[0122] The width X of the welding ribbon guide groove is set to be slightly larger than the width x' of the welding ribbon, and the thickness Y of the welding ribbon guide groove is set to be slightly larger than the thickness y' of the welding ribbon. When the battery string is transmitted on the welding belt, the welding ribbon under the battery cell will be located in the welding ribbon guide groove of the welding ribbon introduction plate, which can prevent the welding ribbon from deviating. The welding ribbon guide groove can ensure the position accuracy of the welding ribbon on the battery string relative to the battery cell.

[0123] In order to further improve the processing efficiency, a solder strip feeding processing mechanism may be connected to the high temperature transmission mechanism, wherein the solder strip feeding processing mechanism includes a solder strip coil feeding 25, a solder strip soaking, bending, stretching, cutting mechanism 26, and a solder strip placing mechanism 27. The solder strip feeding processing mechanism is not limited to a specific structure, and any structure that can realize the battery string cutting function can be applied to the present application.

[0124] In both structures, solder strip press blocks are used, so a press block circulation mechanism 28 can be added to load and recycle the solder strip press blocks. The press block circulation mechanism includes a double-layer transmission line, each layer of the transmission line is placed with solder strip press blocks, the front of the upper transmission line and the front of the lower transmission line are provided with solder strip press block lifting and positioning mechanisms, a press block placing and transporting module is provided above the front of the transmission line, and a press block receiving and transporting module is provided above the rear of the transmission line. The solder strip press blocks are grabbed and transported by the press block placing and transporting module, and a guide mechanism is provided on the transmission line to prevent the solder strip press blocks from deviating during the transportation process.

[0125] (3) Feeding mechanism

[0126] The unloading mechanism uses the high-temperature conveyor line to cut the welded battery strings through the string cutting and testing mechanism to form small battery strings, and then conduct appearance and EL inspections on the small battery strings. Finally, only the qualified small battery strings will be sent to the typesetting mechanism for typesetting, and the unqualified ones will be placed in the NG area, or the NG strings will be processed by the typesetting mechanism.

[0127] (3.1) Battery string cutting detection mechanism 23

[0128] The battery string cutting detection mechanism includes a welding battery string transmission line 2301, a welding battery string cutting mechanism 2302, a post-cutting transmission line 2303, an appearance detection camera 2304, an NG material box, an OK string transmission line 2305, a string flipping mechanism 2306, a string suction and transport mechanism 2307, and an EL detection mechanism.

[0129] The welding battery string transmission line extending to the side of the high-temperature welding curing device is connected to the welding battery string cutting mechanism to transport the welded and cured battery strings to the cutting station. The post-cutting transmission line is located downstream of the welding battery string transmission line to transmit the cut small battery strings. The appearance inspection camera is located above the post-cutting transmission line to take photos of the cut small battery strings for inspection.

[0130] The OK string transmission line for receiving the inspected small battery strings is located downstream of the transmission line after cutting. The string flipping mechanism is arranged above the OK string transmission mechanism to absorb the battery strings on the OK string transmission line and drive the battery strings to flip. The string suction and transportation mechanism is located above the OK string transmission line to absorb and transport the flipped battery strings to the EL inspection station, and place the inspected products on the layout transmission line in the battery string layout mechanism.

[0131] The string flipping mechanism may include a battery string flipping suction cup for adsorbing a small battery string, a flipping plate for fixing the battery string flipping suction cup, and a flipping driving structure for driving the flipping plate to rotate.

[0132] The string suction and transport mechanism may include a string suction and transport suction cup, a transport fixing frame for fixing the string suction and transport suction cup, a string suction and transport lifting mechanism for driving the transport fixing frame to lift and lower, and a string suction and transport module for driving the string suction and transport lifting mechanism to translate.

[0133] The welding battery string cutting mechanism, appearance inspection camera, string flipping mechanism, string suction and transport mechanism and EL inspection mechanism are not limited to specific structures, and any structure that can realize the battery string cutting function can be applied to this application.

[0134] The welded battery string is transmitted to the welding battery string transmission line. When the battery string moves to the cutting station, the welding battery string cutting mechanism separates each welded battery string to form a small battery string. After cutting, the transmission line moves synchronously with the welding high-temperature line, and each movement is N ≥ 1 distance of a small battery string. In the interval of movement, the appearance inspection camera inspects the appearance of the small battery string after welding, such as whitening, cracks, and broken edges, and feeds back the inspection results to the PLC of the battery string layout mechanism. The qualified OK string continues to the next station, and the NG string is placed in the NG box by the layout robot in the battery string layout mechanism. The small battery string moves to O After the K string is on the transmission line, the string flipping mechanism flips the small battery string so that the back of the small battery string faces upward. If manual observation is required, manual intervention can be made at this step for visual inspection; the string suction and transportation mechanism sucks up the flipped small battery string, and with the cooperation of the string suction and transportation lifting mechanism and the string suction and transportation module, the small battery string is moved to the EL detection position for EL detection. After the detection is completed, the small battery string is placed on the typesetting transmission line to be transmitted to the typesetting material picking position, and the EL detection image is displayed on a 50-inch TV together with the appearance inspection results of the string such as white exposure, cracks, and broken edges, so that the operator can conduct a comparative visual inspection.

[0135] (3.2) Battery string typesetting mechanism 24

[0136] The battery string typesetting mechanism includes a typesetting transmission line 2416, a battery string typesetting grasping device (including a typesetting mechanical claw or a typesetting adsorption frame) 2410, a typesetting X-axis moving mechanism 2407, a typesetting vertical lifting mechanism 2409, a typesetting Y-axis correction motor 2413, a typesetting R-axis correction motor 2412, a typesetting camera 2408, and a typesetting conveying mechanism 2402.

[0137] The head end of the typesetting transmission line extends to the bottom of the string suction and handling mechanism to facilitate material discharge. The typesetting R-axis correction motor drives the battery small string typesetting grabbing device to rotate, and the typesetting Y-axis correction motor drives the typesetting R-axis correction motor and the battery small string typesetting grabbing device to move along the Y-axis to complete the correction of the battery small string.

[0138] The typesetting vertical lifting mechanism drives the typesetting Y-axis correction motor, the typesetting R-axis correction motor and the battery string typesetting grabbing device to rise and fall, and the typesetting X-axis moving mechanism drives the typesetting vertical lifting mechanism to translate all the structures located thereon to move along the X-axis.

[0139] The battery string layout grabbing device 2410 grabs the battery string on the layout transmission line 2416, and moves it to a suitable height at the layout photo location under the action of the layout X-axis moving mechanism 2407 and the layout vertical lifting mechanism 2409, and the layout camera 2408 takes photos and collects pictures, obtains bias information and feeds the bias information back to the PLC of the battery string layout mechanism, and the PLC controls the layout Y-axis correction motor 2413 and the layout R-axis correction motor 2412 to correct the battery string, and after the correction is completed, the battery string is placed in place on the layout conveying mechanism 2402; after it is placed in place, the layout camera 2408 takes photos again as a reference value for the next placement of the string, so as to facilitate the layout of the battery string Another battery string on the grabbing device 2410, in addition, it can be determined whether the string needs to be rotated 180° according to the customer's layout requirements to match the positive and negative pole wiring; after the two battery strings are arranged, the layout conveying mechanism 2402 and the glass plate conveying mechanism 2406 move the glass plate covered with EVA to the width of the two battery strings, and perform layout reciprocatingly; after the complete layout, the glass plate is moved by the glass plate conveying mechanism 2406 to the glass plate output mechanism, and at the same time, the next glass plate is fed to the layout conveying mechanism 2402 by the glass plate lifting mechanism for layout operation; the glass plate output mechanism lifts the arranged glass plate under the drive of its own lifting mechanism and transmits it out of the layout mechanism. The empty glass transmission mechanism 2401 cooperates with the glass lifting mechanism and the whole line empty glass transmission mechanism to transmit the empty glass line to meet the needs of the whole line.

[0140] The glass plate conveying mechanism, the glass plate output mechanism, the glass plate lifting mechanism and the empty glass transmission mechanism are not limited to specific structures, and any structure that can achieve the corresponding functions can be applied to the present application.

[0141] The main action flow of a photovoltaic module string welding and typesetting integrated production equipment includes:

[0142] 1. Loading the battery cell box;

[0143] 2. The dicing device scribes and splits the cells and transfers the cells to the string welding department;

[0144] 3. The string welding department welds the battery cells into strings and transports them to the layout department;

[0145] 4. The typesetting department typeset the page and sends it out.

[0146] Among them, it is divided into three major processes:

[0147] The main process flow of battery cells is: lifting and loading battery cell box -> rotating to take cells from the box -> back defect detection on conveyor belt -> CCD photography on the front -> correction in motion after grabbing -> laser scribing -> placing on the dividing transmission line -> splitting after taking the cell from the dividing transmission line -> CCD transmission line before swinging the cell -> PL detection -> robot taking the cell -> swinging the cell -> paddle transmission -> infrared lampshade welding -> string cutting -> white spot detection -> EL detection -> typesetting transmission line -> typesetting robot -> typesetting -> component discharge.

[0148] The process flow of soldering ribbon is: unwinding soldering ribbon roll -> bending soldering ribbon -> cutting soldering ribbon -> taking soldering ribbon -> laying soldering ribbon.

[0149] The briquetting process is: taking out briquetting -> placing briquetting -> collecting briquetting -> briquetting transmission -> taking out briquetting... reciprocating cycle.

[0150] The beneficial effects of the photovoltaic module string welding and typesetting integrated production equipment of the present invention are: compatible with various battery cell specifications, compatible with multi-grid line formats, compatible with various module typesetting formats, meeting various technologies of reducing the cell spacing such as stack welding, from battery cell dicing, string welding to typesetting integrated machine; improving the equipment's large-scale production capacity, improving the yield of small strings, improving the yield of the entire battery module, and reducing the manual rework rate.

[0151] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A photovoltaic module serial welding and typesetting integrated production equipment, characterized in that: include: Loading, dicing, splitting and handling device, high temperature welding and curing device, battery small string typesetting mechanism, The loading, slicing, splitting and transporting device loads, slicing and splitting the battery cells to form small battery cells, including: a battery cell feeding mechanism, a battery cell transporting and slicing mechanism, a battery cell splitting mechanism and a robot gripping mechanism; The high-temperature welding curing device is used to weld the battery chips and the welding strips, including: a battery chip curing mechanism and a high-temperature conveying line; Battery string layout mechanism: layout the welded battery strings; The battery sheet curing mechanism includes a welding lampshade assembly, an upper pressing needle mechanism, a lower pressing needle mechanism, and an upper pressing needle lifting mechanism arranged below the welding lampshade assembly. The upper pressing needle mechanism and the lower pressing needle mechanism include multiple groups and are symmetrically arranged on the upper and lower sides of the battery string. The upper pressing needle lifting mechanism is arranged on the side of the high-temperature conveying line and is fixedly connected to the upper pressing needle mechanism. The upper pressing needle mechanism and the lower pressing needle mechanism correspond to the welding points on the upper and lower sides of the battery string respectively to clamp the welding strips on the front and back sides with the battery string to form a whole. The welding lampshade assembly is used to weld the battery string, the front welding strip and the back welding strip in series; The high-temperature conveyor line includes a welding support frame, a welding belt, a welding belt driving device, and a vacuum adsorption structure. The welding belt driving device is arranged on the welding support frame and drives the welding belt to operate so as to convey the battery string and the welding belt. The vacuum adsorption structure is arranged below the welding belt to ensure that the position of the battery string does not change during the transmission process. The vacuum adsorption structure includes a vacuum adsorption plate and vacuum adsorption holes. The vacuum adsorption holes are distributed on the vacuum adsorption plate. The welding belt operates closely against the vacuum adsorption plate. The welding belt is provided with air holes corresponding to the vacuum adsorption holes so that the battery string is always in an adsorption state during the transmission process. The welding belt guide groove is provided. Placed on one or more of the welding belt, the vacuum adsorption plate or the fixed guide plate at the head of the welding belt, so that the welding strip under the battery cell is located in the welding strip guide groove to prevent the welding strip from deviating; or, the high-temperature conveyor line includes a welding platform and a paddle-type transport device, on which a welding strip guide plate, a battery cell adsorption plate, a high-temperature welding table and a rear plate are arranged, the paddle-type transport device includes a translation transport paddle and a lifting paddle-type transport mechanism, the lifting paddle-type transport mechanism includes a transport guide rail, a paddle mechanism, a translation screw servo mechanism and a lifting screw servo mechanism, a preheating plate is provided at the bottom of the battery cell adsorption plate, and a high-temperature heating plate is provided at the bottom of the high-temperature welding table; The battery small string typesetting mechanism includes a typesetting transmission line, a battery small string typesetting grasping device, a typesetting X-axis moving mechanism, a typesetting vertical lifting mechanism, a typesetting Y-axis correction motor, a typesetting R-axis correction motor, a typesetting camera, and a typesetting conveying mechanism. The head end of the typesetting transmission line extends to the bottom of the string suction and transport mechanism. The typesetting R-axis correction motor drives the battery small string typesetting grasping device to rotate. The typesetting Y-axis correction motor drives the typesetting R-axis correction motor and the battery small string typesetting grasping device to move along the Y-axis to complete the correction of the battery small string. The typesetting vertical lifting mechanism drives the typesetting Y-axis correction motor, the typesetting R-axis correction motor and the battery small string typesetting grasping device to rise and fall. The typesetting X-axis moving mechanism drives the typesetting vertical lifting mechanism to translate all the structures located thereon to move along the X-axis.

2. The photovoltaic module serial welding and typesetting integrated production equipment according to claim 1, characterized in that: The battery cell feeding mechanism includes a material box conveyor line, a battery cell material box arranged on the conveyor line, a material box lifting mechanism, a battery cell lifting mechanism, an air blowing and slicing mechanism, a rotary material picking and releasing mechanism and a battery cell conveyor line. The material box conveyor line transfers the battery cell material box to the material box stop position. The battery cell lifting mechanism is used to lift and tighten the battery cell material box. The battery cell lifting mechanism is used to lift multiple groups of battery cells in the battery cell material box. The rotary material picking and releasing mechanism is used to absorb multiple groups of battery cells for positive pressure blowing by the air blowing and slicing mechanism. The battery cell conveyor line includes a front adsorption plate of the conveyor line and a rear adsorption plate of the conveyor line. The rotary material picking and releasing mechanism rotates the battery cell after blowing by 180° and then puts it into the front adsorption plate of the conveyor line. The rear adsorption plate of the conveyor line extends to the bottom of the battery cell transporting and slicing mechanism.

3. The photovoltaic module serial welding and typesetting integrated production equipment according to claim 1, characterized in that: The battery cell transport and slicing mechanism includes: a loading vision system, a transport module base, a battery cell transport module, a battery cell correction mechanism, and a laser cutting mechanism. The loading vision system is arranged above the end of the battery cell conveyor line, the battery cell transport module is connected to the side of the transport module base, the battery cell correction mechanism is connected to the battery cell transport module to transport the battery cells on the battery cell conveyor line and correct the battery cells, and the laser cutting mechanism is arranged on the transport module base to laser cut the products on the battery cell correction mechanism.

4. The photovoltaic module serial welding and typesetting integrated production equipment according to claim 1, characterized in that: The cell splitting and slicing mechanism includes a post-slicing conveyor line, a post-slicing feeding detection sensor, a splitting mechanism, a slicing mechanism, an A / B zone post-slicing conveyor line, an NG cell conveyor line and a post-slicing visual inspection mechanism. The cell transport module transports the cell after slicing to the post-slicing conveyor line. The post-slicing feeding detection sensor is used to detect whether the cell is in place. The splitting mechanism is installed on the slicing mechanism. The slicing mechanism drives the splitting mechanism to break the cell and separate the small cell pieces that have been split by a certain distance and then put them into the A / B zone post-slicing conveyor line. The NG cell conveyor line is used to receive unqualified large cell pieces detected by the feeding visual system.

5. The photovoltaic module serial welding and typesetting integrated production equipment according to claim 1, characterized in that: The high-temperature welding and curing device also includes a pressing block circulation mechanism for loading and recycling welding strip pressing blocks.

6. The photovoltaic module serial welding and typesetting integrated production equipment according to claim 5, characterized in that: The pressing block circulation mechanism comprises a double-layer transmission line, on each layer of the double-layer transmission line there are welding strip pressing blocks, the front of the upper layer transmission line and the front of the lower layer transmission line in the double-layer transmission line are provided with welding strip pressing block lifting and positioning mechanisms, a pressing block placing and conveying module is provided above the front of the double-layer transmission line, and a pressing block collecting and conveying module is provided above the rear of the double-layer transmission line, the welding strip pressing blocks are grabbed by the pressing block placing and conveying module and are placed on the high-temperature conveying line to complete the welding strip pressing, and a guiding mechanism is provided on the double-layer transmission line to prevent the welding strip pressing blocks from deviating during the conveying process.

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