Laser cutting device for solar cell sheets

Abstract

The present invention discloses a laser cutting device for solar cells, comprising: a cell feeding conveyor line, a visual system, a handling module base, an A-zone cell handling module, a B-zone cell handling module, an A-zone cell correction mechanism, a B-zone cell correction mechanism, and a laser cutting mechanism. Through the above-mentioned method, the present invention provides a laser cutting device for solar cells, realizes automatic positioning of the cells, and enables the laser to automatically adjust the focus according to the cell format, thereby improving the production efficiency of the equipment, reducing the cost of solar cell cutting components, and reducing the space occupied by the equipment.

Description

Technical Field

[0001] The invention relates to the technical field of solar photovoltaic component equipment, and in particular to a laser cutting device for solar cell sheets. Background Art

[0002] With the rapid development of solar cell technology, the demand for half-cell and multi-cell (N>2) module technologies has gradually increased. As an important component of solar power generation, the manufacturing technology of photovoltaic modules has not changed much for a long time. Among them, the industry generally uses laser dicing machines to complete cell cutting, but this cutting process is connected with the string welding and stacking process with low conversion efficiency and low integration. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a laser cutting device for solar cell sheets, which has the advantages of high reliability, precise positioning, compact structure, etc., and has broad market prospects in the application and popularization of solar photovoltaic component equipment.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is:

[0005] Provided is a laser cutting device for solar cell sheets, comprising: a sheet feeding conveying line, a visual system, a handling module base, a sheet handling module, a sheet deviation correcting mechanism, and a laser cutting mechanism.

[0006] The end of the battery cell feeding conveyor line extends to the top of the conveying module base, the visual system is arranged above the end of the battery cell feeding conveyor line, the battery cell conveying module is connected to the side of the conveying module base, the battery cell correction mechanism is connected to the battery cell conveying module to convey the battery cells on the battery cell feeding conveyor line and correct the battery cells, and the laser cutting mechanism is arranged on the conveying module base to laser cut the products on the battery cell correction mechanism.

[0007] In a preferred embodiment of the present invention, two groups of the battery cell transport modules are relatively arranged on two sides of the transport module base, and each group of the battery cell transport modules is connected to one of the battery cell deviation correcting mechanisms.

[0008] In a preferred embodiment of the present invention, the battery cell feeding conveyor line includes a conveyor line support frame, a conveyor line drive mechanism, an adsorption belt, a front battery cell adsorption plate, a rear battery cell adsorption plate, and an incoming material detection sensor for detecting whether the battery cell is loaded. The rear portion of the conveyor line drive mechanism and the conveyor line support frame are arranged on a handling module base, the front battery cell adsorption plate and the rear battery cell adsorption plate are arranged on the conveyor line support frame, the adsorption belt surrounds the outer periphery of the front battery cell adsorption plate and the rear battery cell adsorption plate, the conveyor line drive mechanism drives the adsorption belt to operate to convey the battery cell, and the adsorption belt, the front battery cell adsorption plate and the rear battery cell adsorption plate are provided with conveying adsorption holes for adsorbing the battery cell.

[0009] In a preferred embodiment of the present invention, the visual system includes an area array camera, a bar light source for the area array camera, a light source cover, a backlight source, a line scan camera, and a bar light source for the line scan camera. The line scan camera and the bar light source for the line scan camera are arranged between a front adsorption plate for a battery cell and a rear adsorption plate for a battery cell to detect defects on the back of the battery cell. The light source cover is arranged above the rear adsorption plate for the battery cell. The area array camera and the bar light source for the area array camera are arranged in the light source cover. The backlight source is arranged on the bottom surface or below the rear adsorption plate for the battery cell to judge defects on the front side of the battery cell and determine the grid line coordinates of the battery cell.

[0010] In a preferred embodiment of the present invention, the battery cell transport module includes a screw module, a transport connecting frame, and a Z-axis lifting mechanism. The screw module is connected to the transport connecting frame and drives the transport connecting frame to move back and forth. The Z-axis lifting mechanism is arranged on the transport connecting frame and drives the battery cell correction mechanism to move up and down.

[0011] In a preferred embodiment of the present invention, the battery cell correction mechanism includes an X-axis adjustment slide, an R-axis adjustment slide, a correction adsorption plate, a correction suction cup, a suction cup adjustment mechanism, a correction suction hole and a correction support frame, 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, the suction cup adjustment mechanism and the correction suction hole for adsorbing the battery cell are arranged on the correction adsorption plate.

[0012] In a preferred embodiment of the present invention, the laser cutting mechanism includes a laser and focusing mirror optical component, an X-axis laser automatic adjustment slide, a Z-axis laser automatic adjustment mechanism and a dust suction mechanism for removing dust. 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 to adjust the focus of the laser. The dust suction mechanism is arranged on the upper part of the laser and focusing mirror optical component.

[0013] In a preferred embodiment of the present invention, there are two laser and focusing mirror optical components, one group of laser and focusing mirror optical components is connected to the X-axis laser automatic adjustment slide, and the other group of laser and focusing mirror optical components is connected to the Z-axis laser automatic adjustment slide. The X-axis laser automatic adjustment slide and the Z-axis laser automatic adjustment slide cooperate to drive the two laser and focusing mirror optical components to translate and lift. The X-axis laser automatic adjustment slide adjusts the distance between the two laser and focusing mirror optical components to meet different cutting spacing requirements of battery cells. The Z-axis laser automatic adjustment slide adjusts the focal points of the two laser and focusing mirror optical components to be coplanar. The Z-axis automatic adjustment mechanism drives the laser and focusing mirror optical components, the X-axis laser automatic adjustment slide and the Z-axis laser automatic adjustment slide to lift and lower to debug the laser focus position.

[0014] In a preferred embodiment of the present invention, the laser and focusing mirror optical assembly is connected to a beam splitter for splitting one laser beam into N beams to complete the cutting of multiple cells.

[0015] In a preferred embodiment of the present invention, 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, a blowing port, a 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 at the top of the laser mounting frame, the 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 blowing cavity, the side wall of the optical device mounting seat is provided with a blowing port connected to the blowing cavity, and the positive pressure blowing device is connected to the blowing port to remove dust by positive pressure blowing.

[0016] The beneficial effects of the present invention are: realizing automatic positioning of the battery sheet, and enabling the laser to automatically adjust the focus according to the battery sheet format, thereby improving equipment production efficiency, reducing the cost of solar cell cutting components, and reducing equipment space occupancy. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] 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:

[0018] Figure 1 It is a schematic diagram of the overall structure of a preferred embodiment of a laser cutting device for solar cells of the present invention;

[0019] Figure 2 It is a schematic structural diagram of a solar cell feeding and conveying line in a preferred embodiment of a laser cutting device for solar cells of the present invention;

[0020] Figure 3 It is a structural schematic diagram of a visual system in a preferred embodiment of a laser cutting device for solar cells of the present invention;

[0021] Figure 4 It is a structural schematic diagram of a solar cell transport module in a preferred embodiment of a laser cutting device for solar cells of the present invention;

[0022] Figure 5 It is a structural schematic diagram of a cell sheet deviation correction mechanism in a preferred embodiment of a laser cutting device for solar cell sheets of the present invention;

[0023] Figure 6 It is a structural schematic diagram of a half-sheet cutting mechanism in a preferred embodiment of a laser cutting device for solar cells of the present invention;

[0024] Figure 7 It is a structural schematic diagram of a multi-sheet cutting mechanism in a preferred embodiment of a laser cutting device for solar cells of the present invention;

[0025] Figure 8 The present invention is a schematic structural diagram of a laser cutting device for solar cells, a preferred embodiment of the present invention, and a laser and focusing mirror optical component. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-8 , the embodiment of the present invention includes:

[0028] A laser cutting device for solar cell sheets, comprising: a cell feeding conveyor line 2001, a visual system 2002, a handling module base 2003, an A-zone cell handling module 2004, a B-zone cell handling module 2005, an A-zone cell correction mechanism 2006, a B-zone cell correction mechanism 2007, and a laser cutting mechanism 2008.

[0029] The end of the battery cell feeding conveyor line extends to the top of the conveying module base, the visual system is arranged above the end of the battery cell feeding conveyor line, the A-zone battery cell conveying module and the B-zone battery cell conveying module are relatively arranged on both sides of the conveying module base, the A-zone battery cell correction mechanism is connected to the A-zone battery cell conveying module, and the B-zone battery cell correction mechanism is connected to the B-zone battery cell conveying module to convey the battery cells on the battery cell feeding conveyor line and correct the battery cells, and the laser cutting mechanism is arranged on the conveying module base to laser cut the products on the A / B-zone battery cell correction mechanism.

[0030] The cell feeding conveyor line includes a conveyor line support frame 2009, a conveyor line drive mechanism 2010, an adsorption belt (not marked), a cell front adsorption plate 2011, a cell rear adsorption plate 2012, and an incoming material detection sensor (not marked). The conveyor line drive mechanism and the rear part of the conveyor line support frame are arranged on the handling module base, the cell front adsorption plate and the cell rear adsorption plate are arranged on the conveyor line support frame, the adsorption belt surrounds and is tightly attached to the outer periphery of the cell front adsorption plate and the cell rear adsorption plate, the conveyor line drive mechanism drives the adsorption belt to operate to convey the cell, and at the same time, the adsorption belt, the cell front adsorption plate and the cell rear adsorption plate are provided with conveying adsorption holes to prevent the cell from deflecting or falling, and the incoming material detection sensor can be arranged on the conveyor line support frame or the cell front adsorption plate, or can be located above the adsorption belt. Among them, the cell front adsorption plate and the cell rear adsorption plate can be an integrated structure or a split structure.

[0031] The visual 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.

[0032] 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.

[0033] 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 (not marked), a suction cup adjustment mechanism 2026, a correction suction hole (not marked) 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, the correction suction cup for adsorbing the battery cell, the suction cup adjustment mechanism and the correction suction hole 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.

[0034] 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).

[0035] The half-sheet cutting mechanism includes a laser and focusing mirror optical assembly 2028, an X-axis laser automatic adjustment slide 2029, a Z-axis laser automatic adjustment mechanism 2030 and a half-sheet dust collection mechanism 2031. The laser and focusing mirror optical assembly is connected to the X-axis laser automatic adjustment slide via 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 Z-axis laser automatic adjustment mechanism can be fixed on the top frame) to automatically complete the focus adjustment of the laser, and 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.

[0036] The multi-piece cutting mechanism includes two structures:

[0037] 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 2032, a Z-axis automatic adjustment mechanism and a three-slice dust suction mechanism. The three-slice laser cutting mechanism includes two laser 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 laser and focusing mirror optical components to translate and lift. The X-axis laser automatic adjustment slide adjusts the distance between the two laser and focusing mirror optical components to meet the 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 laser 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.

[0038] 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.

[0039] 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 multi-piece dust collection 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 multi-piece dust collection mechanism is arranged on the upper part of the laser and focusing mirror optical component, and the beam splitter is used to divide one laser into N lasers, and the optical path can be freely selected or used simultaneously to complete the multi-piece cutting of the battery cell.

[0040] The laser and focusing mirror optical assembly comprises a laser body 2033, an optical device mounting seat 2034, a beam expander 2035, a focusing mirror 2036, a laser protective glass 2037, a positive pressure air blowing device 2038, an air blowing port 2039, an air blowing cavity 2040, and a laser port 2041. The laser body for emitting laser is connected to the laser mounting seat, the optical device mounting seat is arranged at the top of the laser mounting seat, 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 air 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.

[0041] The half-piece 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.

[0042] A method for producing a laser cutting device for solar cells, comprising the following steps:

[0043] (1) The incoming material detection sensor determines that two or more battery cells are placed at the front end, the front battery cell adsorption plate adsorbs the battery cells, the conveying drive mechanism drives the adsorption belt to move, and the two battery cells are sent to the rear adsorption plate station. During the transmission process, the battery cells pass through the line scan camera;

[0044] (2) The line scan camera takes pictures and detects whether there are defects on the back of the battery cell;

[0045] (3) The Z-axis lifting mechanism in the cell handling module of area A descends, driving the cell correction mechanism to grab the two cells on the rear adsorption plate station, and the Z-axis lifting mechanism rises. During this process, the cell handling module of area B waits at the origin station;

[0046] (4) The area array camera in the visual system takes pictures and detects whether there are defects on the front of the two battery cells, and determines the coordinate position of the battery cell grid line. After the area array camera takes pictures and completes the inspection, the servo motor drives the battery cell handling module in area A to move and transfer the battery cells;

[0047] (5) After receiving the feedback information from the area array camera, the cell correction mechanism uses the X-axis adjustment slide and / or the R-axis adjustment slide to adjust the X-axis and R-axis positions of the cell. The cell correction mechanism moves synchronously with the cell handling module in area A in step (4) until the cell handling module moves to the laser cutting station.

[0048] (6) The laser in the laser cutting mechanism receives feedback information from the line scan camera to determine whether the cell cutting is completed: when the line scan camera detects that there is no defect on the back of the cell, the laser emits light to cut the cell; when the line scan camera detects that there is a defect on the back of the cell, the laser does not work, and the uncut cell flows directly to the next workstation and is sent to the NG product area;

[0049] (7) During the operation of the laser, the positive pressure blowing device blows positive pressure air into the blowing cavity in the optical device mounting seat to prevent the battery cell cutting dust from falling on the surface of the laser protective glass and prevent the laser energy from being reduced. At the same time, the dust suction mechanism is turned on to timely absorb the dust generated when the battery cell is cut, wherein the positive pressure blowing device and the dust suction mechanism are always on;

[0050] (8) When the laser cutting mechanism in step (6) completes the cell cutting, the cell transport module in area A moves to the feeding station and puts in the two cut cell sheets. Then the Z-axis lifting mechanism rises and the cell transport module in area A returns to the origin station below the area array camera.

[0051] (9) When the battery cell is transferred to the rear adsorption plate station in step (1), the front-end device feeds the material to the front adsorption plate again, and the incoming material sensor detects the incoming material. When the battery cell on the rear adsorption plate is taken away by the battery cell handling module in area A, the battery cell on the front adsorption plate is added to the rear adsorption plate, and the line scan camera takes pictures to detect defects on the back of the battery cell;

[0052] (10) The Z-axis lifting mechanism in the battery cell handling module of area B descends, driving the battery cell correction mechanism to grab two battery cells at the rear adsorption plate station, and the Z-axis lifting mechanism rises;

[0053] (11) The area array camera in the visual system takes pictures to detect defects on the front sides of the two battery cells and determine the coordinate positions of the battery cell grid lines. After the area array camera takes pictures, the servo motor drives the battery cell handling module in area B to move and transfer the battery cells;

[0054] (12) The cell handling module, cell correction mechanism and laser station in area B repeat steps (5) to (8) to complete cell cutting.

[0055] (13) Repeat the above steps until all battery cells are cut.

[0056] The beneficial effects of the laser cutting device for solar cell sheets of the present invention are: realizing automatic positioning of the cell sheets, and enabling the laser to automatically adjust the focus according to the cell sheet format, thereby improving equipment production efficiency, reducing the cost of solar cell sheet cutting components, and reducing equipment space occupancy.

[0057] 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 laser cutting device for solar cells, characterized in that: include: Cell feeding conveyor line, visual system, handling module base, cell handling module, cell correction mechanism, laser cutting mechanism, The end of the cell feeding conveyor line extends to the top of the handling module base, the visual system is arranged above the end of the cell feeding conveyor line, the cell handling module is connected to the side of the handling module base, the cell deviation correction mechanism is connected to the cell handling module to carry the cell on the cell feeding conveyor line and correct the cell, and the laser cutting mechanism is arranged on the handling module base to perform laser cutting on the product on the cell deviation correction mechanism; The cell transport module includes a screw module, a transport connection frame, and a Z-axis lifting mechanism. The screw module is connected to the transport connection frame and drives the transport connection frame to move back and forth. The Z-axis lifting mechanism is arranged on the transport connection frame and drives the cell correction mechanism to move up and down. The battery cell correction mechanism includes an X-axis adjustment slide, an R-axis adjustment slide, a correction adsorption plate, a correction suction cup, a suction cup adjustment mechanism, a correction suction hole and a correction support frame, 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, the suction cup adjustment mechanism and the correction suction hole for adsorbing the battery cell are arranged on the correction adsorption plate; The laser cutting mechanism includes a laser and focusing mirror optical component, an X-axis laser automatic adjustment slide, a Z-axis laser automatic adjustment mechanism and a dust suction mechanism for removing dust. The laser and focusing mirror optical component 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 to adjust the focus of the laser. The dust suction mechanism is arranged on the upper part of the laser and focusing mirror optical component. The laser and focusing mirror optical assembly comprises a laser body, an optical device mounting seat, a beam expander, a focusing mirror, a laser protective glass, a positive pressure air 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 seat, the optical device mounting seat is arranged on the top of the laser mounting seat, the air blowing cavity, the laser protective glass, the focusing mirror, and the beam expander are arranged in the optical device mounting seat in sequence from top to bottom, 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 air blowing device is connected to the air blowing port to remove dust by positive pressure air blowing.

2. The laser cutting device for solar cells according to claim 1, characterized in that: The battery cell feeding conveyor line includes a conveyor line support frame, a conveyor line drive mechanism, an adsorption belt, a front battery cell adsorption plate, a rear battery cell adsorption plate, and an incoming material detection sensor for detecting whether the battery cell is loaded. The rear of the conveyor line drive mechanism and the conveyor line support frame are arranged on the handling module base, the front battery cell adsorption plate and the rear battery cell adsorption plate are arranged on the conveyor line support frame, the adsorption belt is wrapped around the outer periphery of the front battery cell adsorption plate and the rear battery cell adsorption plate, the conveyor line drive mechanism drives the adsorption belt to operate to convey the battery cell, and the adsorption belt, the front battery cell adsorption plate and the rear battery cell adsorption plate are provided with conveying adsorption holes for adsorbing the battery cells.

3. The laser cutting device for solar cells according to claim 2, characterized in that: The visual system includes an area array camera, a bar light source for the area array camera, a light source cover, a backlight source, a line scan camera, and a bar light source for the line scan camera. The line scan camera and the bar light source for the line scan camera are arranged between a front adsorption plate for a battery cell and a rear adsorption plate for a battery cell to detect defects on the back side of the battery cell. The light source cover is arranged above the rear adsorption plate for the battery cell. The area array camera and the bar light source for the area array camera are arranged in the light source cover. The backlight source is arranged on the bottom surface or below the rear adsorption plate for the battery cell to judge defects on the front side of the battery cell and determine the grid line coordinates of the battery cell.

4. The laser cutting device for solar cells according to claim 1, characterized in that: The two groups of battery cell transport modules are relatively arranged on two sides of the transport module base, and each group of battery cell transport modules is connected to one of the battery cell deviation correction mechanisms.

5. The laser cutting device for solar cells according to claim 1, characterized in that: There are two laser and focusing mirror optical components, one group of laser and focusing mirror optical components is connected to the X-axis laser automatic adjustment slide, and the other group of laser and focusing mirror optical components is connected to the Z-axis laser automatic adjustment mechanism; the X-axis laser automatic adjustment slide and the Z-axis laser automatic adjustment mechanism cooperate to drive the two laser and focusing mirror optical components to translate and lift, wherein the X-axis laser automatic adjustment slide adjusts the spacing between the two laser and focusing mirror optical components to adapt to different cutting spacing requirements of battery cells, and the Z-axis laser automatic adjustment mechanism adjusts the focal plane of the two laser and focusing mirror optical components; the Z-axis automatic adjustment mechanism drives the laser and focusing mirror optical components, the X-axis laser automatic adjustment slide and the Z-axis laser automatic adjustment mechanism to lift and lower to debug the laser focus position.

6. The laser cutting device for solar cells according to claim 1, characterized in that: The laser and focusing mirror optical assembly is connected to a beam splitter for dividing one laser beam into N beams, so as to complete the cutting of multiple cells.

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