CN113510379A - Solar cell laser edge cleaning machine and edge cleaning method - Google Patents
Solar cell laser edge cleaning machine and edge cleaning method Download PDFInfo
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- 238000004140 cleaning Methods 0.000 title claims abstract description 73
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- 238000012545 processing Methods 0.000 claims abstract description 19
- 239000000428 dust Substances 0.000 claims description 27
- 239000010409 thin film Substances 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 8
- 238000007664 blowing Methods 0.000 claims description 6
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- 230000001360 synchronised effect Effects 0.000 claims description 4
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- 238000007688 edging Methods 0.000 claims 2
- 238000012217 deletion Methods 0.000 description 11
- 230000037430 deletion Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 239000000779 smoke Substances 0.000 description 9
- 239000010408 film Substances 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000009966 trimming Methods 0.000 description 4
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- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
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- H—ELECTRICITY
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- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
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- Y02E10/549—Organic PV cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The invention discloses a solar cell laser edge cleaner and an edge cleaning method, and belongs to the technical field of photovoltaic solar processing. The edge cleaning machine comprises a machine table, a plurality of linear driving mechanisms, a working platform and a lifting transmission mechanism; the linear driving mechanisms surround a rectangular processing area; each linear driving mechanism is provided with a laser cleaning head, and each laser cleaning head comprises a rack, a micromotion module, a first laser system and a second laser system; the working platform is positioned in the rectangular processing area, a plurality of air holes are formed in the working platform, and air is blown or sucked through the air holes so that the solar cell is floated above the working platform or adsorbed on the surface of the working platform; the lifting transmission mechanism is arranged on the working platform and used for lifting and transmitting the solar cell in the solar cell edge cleaning process. The edge cleaning method is carried out by utilizing the provided edge cleaning machine. The invention can effectively clear the edges of the solar cell, has small heat influence on the edges and high efficiency.
Description
Technical Field
The invention belongs to the technical field of photovoltaic solar processing, and particularly relates to a solar cell laser edge cleaning machine and an edge cleaning method.
Background
Solar cells are typically constructed of a solar cell substrate and a thin film layer structure, such as a perovskite solar cell, attached to the solar cell glass substrate, with the thin film layer on the solar cell substrate comprising an underlying transparent conductive layer, perovskite layer (or other material layer), conductive layer. In the production process of the solar cell, the edge cleaning is carried out along the edge of the glass substrate of the solar cell, so that when the solar cell is mounted on metal, the thin film layer and the metal frame are short-circuited or moisture enters the metal frame to reduce the conductivity, and therefore, the edge cleaning of the solar cell is an essential process in the manufacturing process of the solar cell.
However, in the conventional solar cell edge deletion process, a high-power infrared laser is usually used to complete the edge deletion process, but in the solar cell edge deletion process, the solar energy is affected by a large thermal influence on the edge, so that the conductivity and the overall performance of the solar cell are affected. In addition, there are also new processes and apparatuses, for example, a film removing method, a substrate processing method and a substrate processing apparatus disclosed in the invention patent application No. 202010361352.5; and patent document No. 201080050150.3 also discloses a method and an apparatus for manufacturing a solar cell module. However, the existing technologies still cannot effectively clear the edge of the solar cell in the process of clearing the edge of the solar cell.
Disclosure of Invention
The technical problem is as follows: the invention provides a laser edge cleaner capable of effectively cleaning edges of solar cells and an edge cleaning method using the laser edge cleaner, which can effectively reduce the influence of edge heat in the edge cleaning process.
The technical scheme is as follows: in one aspect, the present invention provides a laser edge trimmer, including:
a machine platform;
the linear driving mechanisms are arranged on the machine table and enclose a rectangular processing area; each linear driving mechanism is provided with a laser cleaning head, and each laser cleaning head comprises a rack, a micro-motion module arranged at the upper end of the rack, a first laser system arranged on the micro-motion module and a second laser system arranged at the lower part of the rack; the first laser system is used for scribing the solar cell and dividing the solar cell into an effective area and an ineffective area, and the second laser system is used for clearing the ineffective area;
the working platform is arranged on the machine table and positioned in the rectangular processing area, and a plurality of air holes are formed in the working platform, so that air can be blown or sucked through the air holes, and the solar cell can be floated above the working platform or adsorbed on the surface of the working platform;
and the lifting transmission mechanism is arranged on the working platform and used for lifting and transmitting the solar cell in the solar cell edge cleaning process.
When edge cleaning is carried out, the lifting transmission mechanism is lifted, the solar cell is transmitted to a set position forwards, then the lifting transmission mechanism descends, the working platform blows air outwards, the solar cell is floated above the working platform, and the clamping positioning component is started to clamp and position the solar cell; then the clamping and positioning component retracts, the external air pressure is gradually reduced, the solar cell falls on the surface of the working platform, and the solar cell is adsorbed; then starting a first laser system, scribing the solar cell under the drive of the linear driving mechanism, and dividing a film layer on the surface of the solar cell into an effective area and an ineffective area; then starting a second laser system, and removing the film in the invalid area under the drive of the linear driving mechanism; after the cleaning is finished, the linear driving mechanism returns to the original position, and the laser cleaning head returns to the original position; and then the lifting transmission mechanism ascends to convey the edge-cleaned solar cells forwards for blanking. By utilizing the equipment, the edge cleaning operation is completed through the cooperation of the two laser systems, so that the edge heat influence of the laser on the solar cell can be effectively reduced, and the performance of the solar cell is ensured. In addition, degree of automation is high, can greatly improve production efficiency.
Furthermore, four linear driving mechanisms are arranged on the side, so that the height tolerance and the parallelism of the working table surface can be guaranteed, the influence of machining errors during equipment manufacturing is eliminated, and the installation and the debugging are easy.
Furthermore, the first laser system comprises a first laser, a first laser and a focusing lens, wherein a laser beam emitted by the first laser is reflected by the first laser, then irradiates into the focusing lens, and is emitted after being focused by the focusing lens.
Furthermore, the second laser system comprises a second laser, a second reflecting mirror, a vibrating mirror and a field lens, and laser beams emitted by the second laser are reflected by the second reflecting mirror and then sequentially enter the vibrating mirror and the field lens to be emitted.
Furthermore, a plurality of clamping and positioning parts are arranged on the machine table and located on the outer side of the linear driving mechanism, and the clamping and positioning parts are used for clamping and positioning the solar cell on the edge cleaning machine.
Furthermore, a dust hood is arranged on the focusing lens, a laser through hole and a dust extraction opening are formed in the dust hood, and a laser beam coming out of the focusing lens penetrates through the laser through hole, so that dust can be synchronously collected in the edge cleaning process, and the influence of the smoke on the solar cell is avoided.
Furthermore, the lifting transmission mechanism is arranged below the working platform and comprises a plurality of roller transmission units, and rollers of the roller transmission units can pass through roller via holes formed in the working platform to lift.
Furthermore, the lifting transmission mechanism comprises a support body, a first driving part, a second driving part and a plurality of roller transmission units, the roller transmission units are arranged on the support body, each roller transmission unit comprises a cross beam, a plurality of rollers arranged on the cross beam and a transmission wheel, and the transmission wheels and the rollers are transmitted through synchronous belts; the first driving part is used for driving the supporting body to move up and down, and the second driving part drives the roller to rotate.
Further, an air receiving component is arranged below the working platform and connected with the air hole and an external air compressor through the air receiving component.
Further, a laser power detection device is arranged on the machine table and used for detecting the power of the laser system.
Furthermore, the clamping and positioning component is an air cylinder or an electric cylinder, and is simple in structure and easy to control.
In another aspect, a method for trimming a solar cell by using the solar cell trimming machine is provided, which includes:
resetting the laser cleaning head, and adsorbing the solar cell on the working platform;
starting a first laser system to emit first laser to irradiate on a thin film layer of the solar cell, scribing the solar cell under the driving of four linear driving mechanisms, and dividing the solar cell into an effective area and an ineffective area;
and closing the first laser system, starting a second laser system to emit second laser to irradiate the thin film layer through the glass substrate, changing the focusing position of the laser beam by using a vibrating mirror, and removing the thin film in the invalid area under the driving of the four linear driving mechanisms.
By the method, the edge heat influence on the solar cell in the edge cleaning process is effectively reduced, and the edge cleaning efficiency is high.
Further, the power of the first laser is smaller than that of the second laser.
Further, when the solar cell is fed, the lifting transmission mechanism is lifted, and the solar cell is placed on the lifting transmission mechanism; lowering the lifting transmission mechanism, and blowing air to the outside by the working platform to enable the solar cell to float above the working platform; the clamping and positioning component extends out to push the solar cell to an accurate edge clearing position and then retracts; and gradually reducing the air blowing pressure of the working platform until the solar cell falls back to the working platform, and adsorbing the solar cell by the working platform.
Furthermore, when the solar cell is scribed and the invalid area is cleared, dust is sucked, and the dust is sucked away through the dust suction cover, so that the influence of the dust on the solar cell is avoided.
Compared with the prior art, the invention has the following advantages: when edge cleaning is carried out, the lifting transmission mechanism is lifted, the solar cell is transmitted to a set position forwards under the action of the roller, the roller stops, then the lifting transmission mechanism descends, the working platform blows air outwards, the solar cell is floated above the working platform, and the clamping positioning component is started to clamp and position the solar cell; then the clamping and positioning component retracts, the external air pressure is gradually reduced, the solar cell falls on the surface of the working platform, and the solar cell is adsorbed; then starting a first laser system, scribing the solar cell under the drive of the linear driving mechanism, and dividing a film layer on the surface of the solar cell into an effective area and an ineffective area; then starting a second laser system, and removing the film in the invalid area under the drive of the linear driving mechanism; and then the lifting transmission mechanism rises, and under the action of the rollers, the solar cells after edge cleaning are conveyed forwards for blanking. By utilizing the equipment, the edge cleaning operation is completed through the cooperation of the two laser systems, the edge heat influence of laser on the solar cell can be effectively reduced, the performance of the solar cell is ensured, the edge cleaning efficiency is high, and the automation degree is high.
Drawings
FIG. 1 is a perspective assembly view of an edge trimmer in an embodiment of the present invention;
FIG. 2 is an enlarged view of a portion of FIG. 1 at A;
FIG. 3 is an enlarged view of a portion of FIG. 1 at B;
FIG. 4 is a perspective view of an edge deletion machine in an embodiment of the present invention;
FIG. 5 is a side view of an edge deletion machine in an embodiment of the present invention;
FIG. 6 is an enlarged view of a portion of FIG. 5 at C;
FIG. 7 is a top view of an edge deletion machine in an embodiment of the present invention;
FIG. 8 is an enlarged view of a portion of FIG. 7 at D;
FIG. 9 is a schematic diagram of a solar cell edge deletion process;
FIG. 10 is a schematic view of the mounting of the linear drive mechanism in an embodiment of the present invention;
FIG. 11 is a perspective view of a laser cleaning head in an embodiment of the present invention;
FIG. 12 is a perspective view of another perspective of a laser cleaning head in an embodiment of the present invention;
FIG. 13 is a schematic illustration of the laser path in an embodiment of the present invention;
FIG. 14 is a block diagram of a suction hood in an embodiment of the present invention;
FIG. 15 is a flow chart of an edge deletion method in an embodiment of the invention.
The figure shows that: 100. a machine platform; 200. clamping the positioning component; 300. a linear drive mechanism; 400. a laser cleaning head; 410. A frame; 420. a micro-motion module; 430. a first laser system; 431. a first laser; 432. a first reflector; 433. a focusing lens; 440. a second laser system; 441. a second laser; 442. a second reflector; 443. a galvanometer; 444. a field lens; 450. a dust hood; 451. laser via holes; 452. a dust extraction port; 500. a working platform; 510. air holes; 520. a gas receiving member; 530. a roller is provided with a through hole; 600. a lifting transmission mechanism; 610. a roller transmission unit; 611. a roller; 612. a cross beam; 613. a driving wheel; 614. a synchronous belt; 620. a support body; 700, laser power detection device.
Detailed Description
The invention is further described with reference to the following examples and the accompanying drawings. It is noted that the terms "first," "second," and the like are used for convenience of description only and are not to be construed as limiting in number or the like.
With reference to fig. 1-8, the laser edge trimmer comprises: the device comprises a machine table 100, a plurality of linear driving mechanisms 300, a working platform 500 and a lifting transmission mechanism 600; in the embodiment of the present invention, a total of four linear driving mechanisms 300 are adopted, and the linear driving mechanisms 300 may adopt linear motors, linear modules, and the like. In the preferred scheme, adopted four linear electric motor, four linear electric motor all set up on board 100, enclose into the processing region of a rectangle, because solar cell is the rectangle, need carry out the clear limit simultaneously to four limits of rectangle to improve production efficiency. Generally, a solar cell is long and square, and two opposite long sides and two opposite sides exist, so that four linear motors, two oppositely arranged long-stroke linear motors and two oppositely arranged short-stroke linear motors, are arranged in four linear motors, and a rectangular area is formed in a shape similar to that of the solar cell. The linear motor can adopt the existing high-precision linear motor. Each linear motor is provided with one laser cleaning head 400, so that each linear motor can drive one laser cleaning head to move along a preset motion track, and the cleaning of one edge of the solar cell is completed. Therefore, the four linear motors drive the respective laser cleaning heads 400 to work simultaneously, so that the four edges of the solar cell can be cleaned simultaneously, and the production efficiency is effectively improved.
In the embodiment of the present invention, the laser cleaning head 400 includes a frame 410, a micromotion module 420 disposed at an upper end of the frame 410, a first laser system 430 disposed on the micromotion module 420, and a second laser system 440 disposed at a lower portion of the frame 410. The edge cleaning process is developed mainly for a new laser edge cleaning process, when edge cleaning is performed, firstly, laser emitted by a first laser system 430 is used for scribing a solar cell, a thin film layer on the surface of the solar cell is divided into an effective area (an area needing to be reserved) and an ineffective area (an area needing to be cleaned) under the driving of a linear driving mechanism, as shown in fig. 9, and then, a second laser system 440 is used for cleaning the thin film in the ineffective area under the driving of the linear driving mechanism 300.
The work platform 500 is disposed on the machine table 100 and located in the rectangular processing area, and functions to support the solar cell. In the embodiment of the present invention, the working platform 500 is provided with a plurality of air holes 510, and air is blown or sucked to the outside through the air holes 510, so that the solar cell can be floated above the working platform 500 or adsorbed on the surface of the working platform 500. An air receiving part 520 is arranged below the working platform 500, the air receiving part 520 is communicated with the air holes 510, and the air holes are connected with an external air compressor and the like through the air receiving part 520, so that air is blown or sucked to the outside through the air holes, and the solar cell is floated above the working platform or adsorbed on the surface of the working platform.
The lifting and transferring mechanism 600 is disposed on the machine table 100, and is used for lifting or lowering the solar cell and enabling the solar cell to be transferred forward. In a specific implementation process, the lifting transmission mechanism 600 may adopt a manipulator or the like, but the manipulator may increase the volume of the whole equipment and increase the cost, so in a preferred embodiment of the present invention, another structural form is adopted, the lifting transmission mechanism is disposed below the working platform 500, the lifting transmission mechanism 600 includes a plurality of roller transmission units 610, rollers 611 of the roller transmission units 610 can pass through the working platform 500 through roller via holes 530 formed on the working platform 500, when solar energy needs to be lifted, the rollers 611 pass through the working platform to move upwards so as to support the solar cell to be lifted, and when the solar cell needs to be lowered, the rollers 611 are lowered so as to lower the solar cell; when the solar cell needs to be transported forward, the roller 611 rotates to transport the solar cell forward.
Specifically, in the embodiment of the present invention, the lifting transmission mechanism 600 includes a supporting body 620, a first driving part, a second driving part, and the roller transmission units 610, the roller transmission units 610 are disposed on the supporting body 620, the roller transmission units 610 include a cross beam 612, a plurality of driving wheels 613 disposed on the cross beam 612, and a plurality of the rollers 611, and the rollers 611 and the driving wheels 613 are driven by a synchronous belt 614. The first driving part may adopt an electric cylinder, an air cylinder or an oil cylinder, and the first driving part is used to push the supporting body 620 to move up and down, so that the roller transmission unit 610 may move up and down, and further, the solar cell is driven to lift. And the second driving part, which may be an electric motor, a hydraulic motor, etc., drives the driving wheel 613 to rotate, thereby driving all the rollers 611 to rotate to transmit the solar cells.
In the preferred embodiment of the present invention, the four linear drive mechanisms are positioned on their sides to ensure a height tolerance and parallelism with the table of the work platform 230. Taking a linear motor as an example, in the manufacturing process of a machine, square tube deformation during welding can exist in large-breadth square tube welding processing, stress release deformation during processing and the like cause that the error tolerance of the installation reference of the linear motor is larger (plus or minus 0.03mm), the processing thickness tolerance of a substrate of a long-stroke linear motor (2200 mm is adopted in one embodiment of the invention) is larger (plus or minus 0.02mm), the error tolerance can deviate from the design requirement of being larger than or equal to plus or minus 0.05mm when front-side installation is adopted, the linearity of the long-stroke linear motor can reach 0.008mm, the influence corresponding to the processing error can be removed by side-hanging installation, and the installation and debugging are convenient, and fig. 10 can be referred to.
The linear motor can run in a straight line parallel to the worktable plate Z3 by adjusting Y1 and Y2, and the linear motor can run in a same interval with the worktable plate by adjusting X1 and X2.
In the embodiment of the present invention, with reference to fig. 11 and 12, the first laser system 430 includes a first laser 431, a first reflecting mirror 432, and a focusing lens 433, and a laser beam emitted by the first laser 431 is reflected by the first reflecting mirror 432, then enters the focusing lens 433, and is focused by the focusing lens 433, and then exits. When the solar cell is edge-cleared, the thin film on the rear surface of the solar cell is divided into an active area and an inactive area by the first laser system 430. In general, when the solar cell is divided into regions, a laser having a large power is not required, and in order to reduce the influence of heat on the edges of the solar cell, the power of the first laser is as small as possible, but is too small to affect the efficiency, so that the problems of efficiency and heat influence must be balanced. Therefore, in the embodiment of the present invention, the first laser 431 is a laser with power ranging from 10W to 30W, which can reduce the cost of the device. The first mirror 432 reflects the laser beam emitted from the first laser 431 by 90 ° and then emits the reflected laser beam into the focusing lens 433, and the laser beam is focused by the focusing lens 433 and then emitted onto the surface of the solar cell, and the division of the region is completed by the driving of the linear driving mechanism 300.
In the embodiment of the present invention, the second laser system 440 includes a second laser 441, a second reflecting mirror 442, a vibrating mirror 443, and a field lens 444, and a laser beam emitted by the second laser 441 enters the vibrating mirror 443 and the field lens 444 in sequence after being reflected by the second reflecting mirror 442 and then exits. The second laser system 440 mainly removes the thin film in the inactive area, and the inactive area is separated from the active area, and during the removal process, no large thermal influence is generated on the active area any more, so that a laser with a large power can be used, and therefore, in the implementation of the present invention, a laser with a power range of 100-500W is selected. When the null region elimination is continued, the laser beam emitted from the second laser 441 is reflected by the second mirror 442 by 90 °, and then enters the oscillating mirror 443, and the oscillating mirror 443 focuses the laser beam, and emits the focused laser beam through the field lens 444, and the oscillating mirror 443 oscillates to perform the flight marking, so that the null region elimination is completed by the driving of the linear driving mechanism. The optical path structure formed by the first laser system and the second laser system is shown in fig. 13.
The machine table 100 is provided with a plurality of clamping and positioning components 200, the number of the clamping and positioning components 200 is determined according to the size of the solar cell applied by the laser edge trimming machine, when the laser edge trimming machine is suitable for processing a large-size solar cell, a plurality of clamping and positioning components 200 can be additionally arranged, specifically, the clamping and positioning components 200 are arranged on the outer side of the linear driving mechanism, namely the outer side of the rectangular processing area, and can be oppositely arranged for clamping and positioning the solar cell. In the embodiment of the invention, the clamping and positioning component 200 can adopt an air cylinder or an electric cylinder, so that when the solar cell is clamped and positioned, the solar cell can be positioned to an accurate processing position only by extending out of a cylinder rod of the air cylinder or the electric cylinder, and the clamping and positioning component has a simple structure and is convenient to control.
Further, high-temperature smoke is easily generated during the laser edge cleaning process, and if the smoke falls on the solar cell, the surface of the cell is likely to be damaged, so that the smoke needs to be sucked away in time. In the embodiment of the present invention, a dust hood 450 is disposed on the focusing lens 433, as shown in fig. 14, a laser through hole 451 and a dust suction port 452 are disposed on the dust hood 450, wherein the dust suction port 452 is connectable to a dust suction device, and a laser beam from the focusing lens 433 passes through the laser through hole 451. Thus, the laser beam emitted from the focusing lens 433 can be emitted perpendicularly to the dust hood 450, and the dust hood 450 can completely cover the working area of the laser beam emitted from the focusing lens 433, thereby improving dust collection efficiency. The second laser system 440 is approximately opposite to the first laser system 430, so that when the second laser system 440 works, smoke can be sucked away through the dust hood 450 at any time, and the influence of the smoke on the battery is avoided.
Further, in the embodiment of the present invention, the laser power detection device 700 is disposed on the machine table 100, and specifically, the laser power detection device 700 is disposed at the initial position of the laser cleaning head 400, in the present invention, the initial position of the laser cleaning head 400 is at the intersection of two linear driving mechanisms, that is, the corner position of the rectangular working area, because power detection needs to be performed on four laser cleaning heads 400, at least two laser power detection devices need to be disposed at two corners of the rectangular working area, respectively. In actual engineering, the power of the laser emitted by the second laser system only needs to be detected, so that before the solar cell edge cleaning, the laser emitted by the second laser system is firstly irradiated on the laser power detection device to detect whether the power of the laser meets the process requirement.
With the edge cleaner provided in the embodiment of the present invention, first, the first laser system 430 on the laser cleaning head 400 is used to scribe the thin film layer of the solar cell under the driving of the linear driving mechanism, so as to divide the thin film layer into the inactive area and the active area, and then the second laser system is used to clean the thin film in the inactive area under the driving of the linear driving mechanism, thereby realizing efficient edge cleaning of the solar cell. In addition, when the edge cleaning is carried out through the edge cleaning machine, the edge cleaning is completed through two processes, so that the edge heat influence of the laser on the solar cell can be effectively reduced, and the performance of the solar cell is ensured. In addition, degree of automation is high, can greatly improve production efficiency.
With the edge deletion machine provided in the above embodiment, an embodiment of the present invention provides a laser edge deletion method for a solar cell, as shown in fig. 15, where the edge deletion method includes:
s100: resetting the laser cleaning head 400 and adsorbing the solar cell on the working platform 500;
s200: starting a first laser system 430 to emit first laser to irradiate on a thin film layer of the solar cell, scribing the solar cell under the driving of four linear driving mechanisms 300, and dividing the solar cell into an effective area and an ineffective area;
s300: the first laser system 430 is turned off, the second laser system 440 is started to emit a second laser beam to irradiate the thin film layer through the glass substrate, the focusing position of the laser beam is changed by the vibrating mirror 443, and the thin film in the invalid area is removed under the driving of the four linear driving mechanisms 300.
By dividing the thin film on the surface of the solar cell into the active area and the inactive area by the above method, only scribing is performed without performing laser ablation in a large range in the first laser irradiation, and thus the influence of the edge heat on the active area is small; and when the invalid region is removed by the second laser, the invalid region is separated from the effective region, so that great heat influence on the edge of the effective region can not be generated, the two laser irradiation processes are integrated, the edge cleaning is completed, great heat influence is not generated in the whole edge cleaning process, the overall performance of the solar cell is ensured, and great influence caused by the edge cleaning can be avoided.
Further, the power of the first laser is smaller than that of the second laser, because only a small area needs to be ablated when the solar cell is scribed and divided, only a small power of laser is needed to ensure the processing efficiency, the edge heat influence on the solar cell in the edge cleaning process can be effectively reduced by using the small power of laser, and the manufacturing cost of the equipment can be reduced by using the small power of laser. And the second laser with higher power is adopted, so that the edge cleaning efficiency can be effectively improved, and the invalid area is separated from the effective area, so that the effective area is not greatly influenced by heat when the invalid area is cleaned.
In addition, in the embodiment of the present invention, when the solar cell is loaded, the lifting and conveying mechanism 600 is lifted, and the solar cell is placed on the lifting and conveying mechanism 600; the lifting transmission mechanism 600 is lowered, the working platform 500 blows air outwards, and the solar cell is floated above the working platform 500; the clamping and positioning component 200 extends out, and retracts to the clamping and positioning component 200 after pushing the solar cell to an accurate edge clearing position; the air pressure of the air blowing of the working platform 500 is gradually reduced until the solar cell falls back to the working platform 500, and the working platform adsorbs the solar cell. In order to carry out position control to solar cell during the primary action to make the precision of clear limit better, clear limit quality is better.
In addition, in order to reduce the smoke generated in the laser ablation process, in the embodiment of the invention, dust is simultaneously absorbed when the solar cell is subjected to edge cleaning, and the smoke generated by the laser ablation is absorbed in time through the dust absorption cover 450, so that the damage of the smoke to the surface of the solar cell is avoided.
The above examples are only preferred embodiments of the present invention, it should be noted that: it will be apparent to those skilled in the art that various modifications and equivalents can be made without departing from the spirit of the invention, and it is intended that all such modifications and equivalents fall within the scope of the invention as defined in the claims.
Claims (15)
1. The utility model provides a solar cell laser edge cleaner which characterized in that includes:
a machine table (100);
the linear driving mechanisms (300) are arranged on the machine table (100) and enclose a rectangular processing area; each linear driving mechanism (300) is provided with a laser cleaning head (400), and each laser cleaning head (400) comprises a frame (410), a micro-motion module (420) arranged at the upper end of the frame (410), a first laser system (430) arranged on the micro-motion module (420) and a second laser system (440) arranged at the lower part of the frame (410); the first laser system (430) is used for scribing the solar cell and dividing the solar cell into an effective area and an ineffective area, and the second laser system (440) is used for clearing the ineffective area;
the working platform (500) is arranged on the machine table (100) and is positioned in the rectangular processing area, a plurality of air holes (510) are formed in the working platform (500), and air blowing or air suction can be carried out through the air holes (510), so that the solar cell can be floated above the working platform (500) or adsorbed on the surface of the working platform (500);
and the lifting transmission mechanism (600) is arranged on the working platform (500) and is used for lifting and transmitting the solar cell in the solar cell edge cleaning process.
2. The solar cell laser edge trimmer according to claim 1, characterized in that the linear driving mechanisms (300) are arranged side-on-side.
3. The solar cell laser edge cleaning machine according to claim 2, wherein the first laser system (430) comprises a first laser (431), a first laser (432) and a focusing lens (433), and a laser beam emitted by the first laser (431) is reflected by the first laser (432) and then enters the focusing lens (433), and is focused by the focusing lens (433) and then is emitted.
4. The solar cell laser edge cleaner according to claim 2, wherein the second laser system (440) comprises a second laser (441), a second reflector (442), a galvanometer (443), and a field lens (444), and a laser beam emitted by the second laser (441) is reflected by the second reflector (442) and then enters the galvanometer (443) and the field lens (444) in sequence and then is emitted.
5. The laser edge cleaning machine for the solar cell according to claim 1, wherein a plurality of clamping and positioning components (200) are arranged on the machine table (100), and the clamping and positioning components (200) are positioned outside the linear driving mechanism (300).
6. The solar cell laser edge cleaning machine according to claim 3, wherein a dust hood (450) is arranged on the focusing lens (433), a laser through hole (451) and a dust extraction port (452) are arranged on the dust hood (450), and a laser beam from the focusing lens (433) passes through the laser through hole (451).
7. The solar cell laser edge trimmer according to claim 6, wherein the lifting transmission mechanism (600) is arranged below the working platform (500), the lifting transmission mechanism (600) comprises a plurality of roller transmission units (610), and rollers (611) of the roller transmission units (610) can pass through roller through holes (530) formed in the working platform (500) to be lifted.
8. The solar cell laser edge cleaning machine according to claim 7, wherein the lifting transmission mechanism (600) comprises a support body (620), a first driving part, a second driving part and the plurality of roller transmission units, the plurality of roller transmission units (610) are arranged on the support body (620), the roller transmission units (610) comprise a beam (612) and a plurality of rollers (611) arranged on the beam (612) and a transmission wheel (613), and the transmission wheel (613) and the rollers are driven by a synchronous belt (614); the first driving part is used for driving the supporting body (620) to move up and down, and the second driving part drives the roller to rotate.
9. The solar cell laser edge cleaning machine according to claim 8, wherein a gas receiving part (520) is arranged below the working platform (500), and the gas receiving part (520) is connected with the air hole (510).
10. The solar cell laser edge cleaning machine according to any one of claims 1-9, wherein a laser power detection device (700) is arranged on the machine table (100).
11. The solar cell laser edge trimmer according to claim 5, characterized in that the clamping and positioning component (200) is a cylinder or an electric cylinder.
12. A method of edging a solar cell using the solar cell edging machine as defined in any one of claims 1 to 11, comprising:
resetting the laser cleaning head (400) and adsorbing the solar cell on the working platform (500);
starting a first laser system (430) to emit first laser to irradiate on a thin film layer of the solar cell, scribing the solar cell under the driving of four linear driving mechanisms (300), and dividing the solar cell into an effective area and an ineffective area;
and (3) turning off the first laser system (430), starting the second laser system (440) to emit second laser to irradiate the thin film layer through the glass substrate, changing the focusing position of the laser beam by using a vibrating mirror (443), and removing the thin film in the invalid area under the driving of the linear driving mechanism (300).
13. The method of claim 12, wherein the power of the first laser is less than the power of the second laser.
14. The method according to claim 13, wherein, when the solar cell is loaded, the lifting and conveying mechanism (600) is lifted, and the solar cell is placed on the lifting and conveying mechanism (600); lowering the lifting transmission mechanism (600), and blowing air to the outside by the working platform (500) to enable the solar cell to float above the working platform (500); the clamping and positioning component (200) extends out, and retracts to the clamping and positioning component (200) after pushing the solar cell to an accurate edge clearing position; and gradually reducing the air blowing pressure of the working platform (500) until the solar cell falls back to the working platform (500), and adsorbing the solar cell by the working platform.
15. The method of claim 14, wherein a dust suction operation is performed to suck away the dust through a dust suction hood (450) while scribing the solar cell and while removing the dead region.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930291.4A CN113510379A (en) | 2021-08-13 | 2021-08-13 | Solar cell laser edge cleaning machine and edge cleaning method |
| PCT/CN2022/088111 WO2023015937A1 (en) | 2021-08-13 | 2022-04-21 | Laser edge deletion machine for solar cell and edge deletion method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110930291.4A CN113510379A (en) | 2021-08-13 | 2021-08-13 | Solar cell laser edge cleaning machine and edge cleaning method |
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| CN113510379A true CN113510379A (en) | 2021-10-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110930291.4A Pending CN113510379A (en) | 2021-08-13 | 2021-08-13 | Solar cell laser edge cleaning machine and edge cleaning method |
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| Country | Link |
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| CN (1) | CN113510379A (en) |
| WO (1) | WO2023015937A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114975208A (en) * | 2022-07-21 | 2022-08-30 | 江苏京创先进电子科技有限公司 | Wafer picking and placing method and thinning machine |
| CN114985955A (en) * | 2022-08-03 | 2022-09-02 | 苏州光昛智能科技有限公司 | Double-scribing laser edge cleaning process |
| CN115635197A (en) * | 2022-11-14 | 2023-01-24 | 邯郸中建材光电材料有限公司 | Manufacturing equipment based on light-transmitting power generation glass for BIPV |
| WO2023015936A1 (en) * | 2021-08-13 | 2023-02-16 | 苏州迈为科技股份有限公司 | Method and apparatus for laser edge trimming for solar cell |
| WO2023015937A1 (en) * | 2021-08-13 | 2023-02-16 | 苏州迈为科技股份有限公司 | Laser edge deletion machine for solar cell and edge deletion method |
| CN118647244A (en) * | 2024-08-16 | 2024-09-13 | 杭州柯能新能源有限公司 | Photovoltaic glass's clear limit device |
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| CN118492734B (en) * | 2024-07-17 | 2024-09-24 | 常州市生生线缆有限公司 | Welding equipment for battery connection aluminum row |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101016402B1 (en) * | 2008-10-17 | 2011-02-21 | 주식회사 에스에프에이 | Apparatus for grinding glass of solar cells |
| CN201681959U (en) * | 2010-01-06 | 2010-12-22 | 吴建霖 | Scribing machine for thin-film solar battery |
| JP2012069566A (en) * | 2010-09-21 | 2012-04-05 | Mitsubishi Electric Corp | Thin film solar cell manufacturing method |
| CN102122682B (en) * | 2010-12-28 | 2015-04-01 | 张云峰 | Edge cleaning machine for solar panel |
| CN111403545A (en) * | 2018-12-28 | 2020-07-10 | 东泰高科装备科技有限公司 | Laser edge cleaning method and device for solar cell, preparation method and processing equipment |
| CN110355150B (en) * | 2019-08-02 | 2024-08-30 | 武汉三工光电设备制造有限公司 | Automatic edge cleaner |
| CN113510379A (en) * | 2021-08-13 | 2021-10-19 | 苏州迈为科技股份有限公司 | Solar cell laser edge cleaning machine and edge cleaning method |
-
2021
- 2021-08-13 CN CN202110930291.4A patent/CN113510379A/en active Pending
-
2022
- 2022-04-21 WO PCT/CN2022/088111 patent/WO2023015937A1/en active Application Filing
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023015936A1 (en) * | 2021-08-13 | 2023-02-16 | 苏州迈为科技股份有限公司 | Method and apparatus for laser edge trimming for solar cell |
| WO2023015937A1 (en) * | 2021-08-13 | 2023-02-16 | 苏州迈为科技股份有限公司 | Laser edge deletion machine for solar cell and edge deletion method |
| CN114975208A (en) * | 2022-07-21 | 2022-08-30 | 江苏京创先进电子科技有限公司 | Wafer picking and placing method and thinning machine |
| CN114985955A (en) * | 2022-08-03 | 2022-09-02 | 苏州光昛智能科技有限公司 | Double-scribing laser edge cleaning process |
| CN115635197A (en) * | 2022-11-14 | 2023-01-24 | 邯郸中建材光电材料有限公司 | Manufacturing equipment based on light-transmitting power generation glass for BIPV |
| CN118647244A (en) * | 2024-08-16 | 2024-09-13 | 杭州柯能新能源有限公司 | Photovoltaic glass's clear limit device |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023015937A1 (en) | 2023-02-16 |
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