CN109585602B - SMT (surface mount technology) mounting structure of double-sided electrode solar cell and production process thereof - Google Patents
SMT (surface mount technology) mounting structure of double-sided electrode solar cell and production process thereof Download PDFInfo
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- CN109585602B CN109585602B CN201811466745.1A CN201811466745A CN109585602B CN 109585602 B CN109585602 B CN 109585602B CN 201811466745 A CN201811466745 A CN 201811466745A CN 109585602 B CN109585602 B CN 109585602B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 238000005516 engineering process Methods 0.000 title claims abstract description 10
- 238000003466 welding Methods 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 33
- 229910052710 silicon Inorganic materials 0.000 claims description 33
- 239000010703 silicon Substances 0.000 claims description 33
- 235000012431 wafers Nutrition 0.000 claims description 28
- 238000004140 cleaning Methods 0.000 claims description 11
- 239000002985 plastic film Substances 0.000 claims description 11
- 238000005485 electric heating Methods 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 239000005388 borosilicate glass Substances 0.000 claims description 6
- 239000013078 crystal Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 6
- ZOCHARZZJNPSEU-UHFFFAOYSA-N diboron Chemical compound B#B ZOCHARZZJNPSEU-UHFFFAOYSA-N 0.000 claims description 6
- 238000009792 diffusion process Methods 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 claims description 6
- 239000012535 impurity Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229910052582 BN Inorganic materials 0.000 claims description 3
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims description 3
- 229910000676 Si alloy Inorganic materials 0.000 claims description 3
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000007797 corrosion Effects 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 239000003960 organic solvent Substances 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 description 6
- 230000004907 flux Effects 0.000 description 5
- 238000005476 soldering Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000306 component Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- 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
- H01L31/02—Details
- H01L31/0236—Special surface textures
- H01L31/02363—Special surface textures of the semiconductor body itself, e.g. textured active layers
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
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- Microelectronics & Electronic Packaging (AREA)
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
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Abstract
The invention discloses SMT mounting equipment for double-sided electrode solar cells, which comprises a supporting table and a main frame, wherein a conveying groove is formed in the top wall of the supporting table, a conveying belt and two groups of rotating shafts are arranged in the conveying groove, the two groups of rotating shafts are sleeved on two sides of the inner side of the conveying belt, two groups of motors are installed in the supporting table and are respectively in transmission connection with one ends of the two groups of rotating shafts, adjusting shafts are arranged on two sides of the top wall of the main frame, stand columns are welded on the outer walls of the two groups of adjusting shafts, the stand columns are in transmission connection with the main frame through the adjusting shafts, and one sides, opposite to the two groups of stand columns, are. This two-sided electrode solar wafer SMT pastes dress equipment and production technology thereof through having set up motor, pivot and conveyer belt for the battery piece after welding pastes the dress and accomplishes can go out through conveyer belt automatic transportation, has saved the trouble of artifical transportation.
Description
Technical Field
The invention belongs to the technical field of solar cell production, and particularly relates to a double-sided electrode solar cell SMT (surface mount technology) mounting structure and a production process thereof.
Background
The solar panel is a core component of a solar power generation system and is also the most important component in the solar power generation system, and the solar panel is used for converting solar energy into electric energy, transmitting the electric energy into a storage battery for storage or pushing a load to work. The quality and cost of the solar panel directly determine the quality and cost of the overall system.
The solar cell is required to be welded and mounted during production, but the conventional solar cell mounting structure has the following problems: 1. manual welding is needed mostly, which is troublesome; 2. the position of the battery piece cannot be adjusted, which often brings difficulty to mounting; 3. the flux powder remaining on the battery piece cannot be removed.
Disclosure of Invention
The invention aims to provide a double-sided electrode solar cell SMT (surface mount technology) mounting structure and a production process thereof, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: a double-sided electrode solar cell SMT mounting structure comprises a supporting table and a main frame, wherein a conveying groove is formed in the top wall of the supporting table, a conveying belt and two groups of rotating shafts are arranged in the conveying groove, the two groups of rotating shafts are sleeved on two sides of the inner side of the conveying belt, two groups of motors are arranged in the supporting table, the two groups of motors are respectively in transmission connection with one ends of the two groups of rotating shafts, and the other ends of the two groups of rotating shafts are both in transmission connection with the side wall of an inner cavity of the conveying groove;
adjusting shafts are arranged on two sides of the top wall of the main frame, stand columns are welded on the outer walls of the two groups of adjusting shafts, the stand columns are in transmission connection with the main frame through the adjusting shafts, one opposite sides of the two groups of stand columns are welded with one end of a first telescopic rod, the other ends of the two groups of first telescopic rods are provided with clamping grooves, through holes are formed in two sides of the first telescopic rod, and an electric heating rod and a fan are fixedly installed in the through holes;
the welding of brace table roof has the base plate still, the base plate passes through the second telescopic link and is connected with the plastic sheet, the plastic sheet is close to one side fixed bonding of brace table and has the cleaning brush, the welding of main frame roof has the lifter, the roof of lifter welds with one side of branch, the branch level sets up, and its one side towards the main frame center is equipped with the welding pen, the welding pen runs through the roof and the diapire of branch.
Preferably, the supporting table top wall is provided with four groups of supporting legs, the bottom walls of the four groups of supporting legs are welded with the supporting table top wall, and the other ends of the supporting legs are welded with the four corners of the main frame bottom wall respectively.
Preferably, the electric heating rods are arranged on one side, away from the center of the main frame, of the fan, and the two groups of through holes are symmetrically distributed on the upper side and the lower side of the first telescopic rod.
Preferably, two ends of the second telescopic rod are fixedly bonded with the side wall of the substrate and the top wall of the plastic sheet respectively, and the substrate is arranged on one side of the support platform far away from the lifting rod.
Preferably, the main frame is provided with a notch penetrating through the top wall and the bottom wall of the main frame, one end of the welding pen faces to one side close to the center of the main frame, and the other end of the welding pen is electrically connected with an external power supply.
A production process of a double-sided electrode solar cell SMT mounting structure comprises the following steps:
s1, selecting silicon wafers with consistent performance, and removing the silicon wafers with inconsistent performance;
s2, cleaning the silicon wafer, and removing impurities such as dust and metal cuttings and the like on the silicon wafer by using an organic solvent;
s3, corroding the surface of the silicon wafer by using an alkaline corrosion method, and removing a damage layer caused by mechanical cutting to flatten the surface of the silicon wafer;
s4, diffusion manufacturing, heating and introducing oxygen into the boron chloride sheet, generating diboron trichloride on the surface of the boron chloride sheet, enabling the diboron trichloride to have a chemical reaction with a silicon crystal to form borosilicate glass and deposit the borosilicate glass on the surface of the silicon crystal, and then utilizing nitrogen as protective gas to diffuse boron nitride under the high-temperature condition to form a pn junction;
s5, removing back junctions, evaporating a layer of aluminum on the back of the diffusion silicon wafer in vacuum, and heating to form an aluminum-silicon alloy layer on the silicon wafer;
and S6, manufacturing a positive electrode and a negative electrode, penetrating the slurry through the meshes of the screen, pressurizing the slurry part of the screen by using a scraper, and moving towards the other end of the screen to form the positive electrode and the negative electrode on the surface of the silicon wafer.
The invention has the technical effects and advantages that: according to the SMT mounting structure and the production process of the double-sided electrode solar cell, the motor, the rotating shaft and the conveyor belt are arranged, so that the welded and mounted cell can be automatically transported out through the conveyor belt, and the trouble of manual transportation is eliminated; the lifting rod and the supporting rod are arranged, so that the position of the welding pen can be adjusted by driving the lifting rod to lift, welding and mounting can be carried out at each position of the battery piece, and the trouble of manual welding is saved; by arranging the adjusting shaft and the two groups of first telescopic rods, the battery pieces can be fixed by utilizing the clamping grooves on the two groups of telescopic rods by driving the two groups of telescopic rods to extend, the battery pieces are prevented from falling off, and the angle of the battery pieces can be adjusted by rotating the adjusting shaft, so that the welding and mounting processes are smoother; by arranging the second telescopic rod, the plastic sheet and the cleaning brush, the second telescopic rod is driven to stretch back and forth to wipe the surface of the battery piece after the mounting is finished, so that residual soldering flux powder on the battery piece is removed, and the residual soldering flux powder is prevented; through having set up through-hole, electric bar and fan, drive fan and electric bar work are carried hot-air to the battery piece around, can make the battery piece dry as early as possible, prevent that drying time overlength from resulting in the phenomenon of battery piece welded position attached to dust to take place.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural view of an electric heating rod according to the present invention;
fig. 3 is a schematic structural view of the cleaning brush of the present invention.
In the figure: the device comprises a supporting table 1, a conveying groove 2, a conveying belt 3, a rotating shaft 4, supporting legs 5, a main frame 6, a lifting rod 7, a supporting rod 8, a welding pen 9, an adjusting shaft 10, a through hole 11, an electric heating rod 12, a fan 13, a stand column 14, a first telescopic rod 15, a clamping groove 16, a base plate 17, a cleaning brush 18, a second telescopic rod 19 and a plastic sheet 20.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a double-sided electrode solar cell SMT mounting structure shown in figures 1-3, which can be produced by using SMT automation equipment because mechanical parts are utilized to fix the cell, and comprises a supporting table 1 and a main frame 6, wherein the top wall of the supporting table 1 is provided with a conveying groove 2, a conveying belt 3 and two groups of rotating shafts 4 are arranged in the conveying groove 2, the two groups of rotating shafts 4 are sleeved on two sides of the inner side of the conveying belt 3, two groups of motors are arranged in the supporting table 1, the power of the two groups of motors is the same, the rotating directions of the two groups of rotating shafts 4 are the same, the two groups of motors are respectively in transmission connection with one ends of the two groups of rotating shafts 4, and the other ends of the two groups of rotating shafts 4 are in transmission connection with the side;
adjusting shafts 10 are arranged on two sides of the top wall of the main frame 6, upright posts 14 are welded on the outer walls of two groups of adjusting shafts 10, the upright posts 14 are in transmission connection with the main frame 6 through the adjusting shafts 10, opposite sides of the two groups of upright posts 14 are welded with one end of a first telescopic rod 15, the other ends of the two groups of first telescopic rods 15 are provided with clamping grooves 16, through holes 11 are formed in two sides of the first telescopic rod 15, and electric heating rods 12 and fans 13 are fixedly mounted in the through holes 11;
the roof of brace table 1 still welds there is base plate 17, base plate 17 is connected with plastic sheet 20 through second telescopic link 19, plastic sheet 20 is close to one side fixed bonding of brace table 1 and has cleaning brush 18, and cleaning brush 18's function is similar to the toothbrush, can clean the battery piece surface, detach the powder of the scaling powder of adding when welding dress battery piece and impurity such as other adnexed dust, 6 roof welding of main frame has lifter 7, the roof of lifter 7 welds with one side of branch 8, 8 levels of branch set up, and its one side towards the main frame 6 center is equipped with welding pen 9, welding pen 9 runs through the roof and the diapire of branch 8, and first telescopic link 15, second telescopic link 19 and lifter 7 are by electric drive.
Preferably, the top wall of the support table 1 is provided with four groups of supporting legs 5, the bottom walls of the four groups of supporting legs 5 are welded with the top wall of the support table 1, the other ends of the supporting legs are welded with four corners of the bottom wall of the main frame 6, and the supporting legs 5 are used for supporting the main frame 6.
Preferably, the electric heating rods 12 are arranged on one side of the fan 13 far away from the center of the main frame 6, and the two groups of through holes 11 are symmetrically distributed on the upper side and the lower side of the first telescopic rod 15, so that air near the upper side and the lower side of the first telescopic rod 15 can be heated, and all positions of the battery piece can be dried more uniformly.
Preferably, both ends of the second telescopic rod 19 are fixedly bonded to the side wall of the base plate 17 and the top wall of the plastic sheet 20, respectively, the base plate 17 is arranged on the side of the support table 1 far away from the lifting rod 7, and the second telescopic rod 19 is driven to expand and contract to wipe the surface of the battery sheet back and forth, so as to remove residues on the surface of the battery sheet.
Preferably, the main frame 6 is provided with a notch penetrating through the top wall and the bottom wall of the main frame, one end of the welding pen 9 faces to one side close to the center of the main frame 6, the other end of the welding pen is electrically connected with an external power supply, and the battery piece can be welded and mounted through the welding pen 9.
A production process of a double-sided electrode solar cell SMT mounting structure comprises the following steps:
s1, selecting silicon wafers with consistent performance, and removing the silicon wafers with inconsistent performance;
s2, cleaning the silicon wafer, and removing impurities such as dust and metal cuttings and the like on the silicon wafer by using an organic solvent;
s3, corroding the surface of the silicon wafer by using an alkaline corrosion method, and removing a damage layer caused by mechanical cutting to flatten the surface of the silicon wafer;
s4, diffusion manufacturing, heating and introducing oxygen into the boron chloride sheet, generating diboron trichloride on the surface of the boron chloride sheet, enabling the diboron trichloride to have a chemical reaction with a silicon crystal to form borosilicate glass and deposit the borosilicate glass on the surface of the silicon crystal, and then utilizing nitrogen as protective gas to diffuse boron nitride under the high-temperature condition to form a pn junction;
s5, removing back junctions, evaporating a layer of aluminum on the back of the diffusion silicon wafer in vacuum, and heating to form an aluminum-silicon alloy layer on the silicon wafer;
and S6, manufacturing a positive electrode and a negative electrode, penetrating the slurry through the meshes of the screen, pressurizing the slurry part of the screen by using a scraper, and moving towards the other end of the screen to form the positive electrode and the negative electrode on the surface of the silicon wafer.
Specifically, the SMT mounting structure and the production process thereof for the double-sided electrode solar cell piece are characterized in that during mounting, two ends of the cell piece are respectively arranged in clamping grooves 16 on two groups of first telescopic rods 15, the two groups of first telescopic rods 15 are driven to extend to clamp and fix the cell piece, the positions of two groups of adjusting shafts 10 are adjusted according to actual requirements to adjust the angle of the cell piece, then a welding pen 9 is electrified to carry out welding mounting on the cell piece, soldering flux is added during welding mounting, the welding effect is better, then an electric heating rod 12 and a fan 13 are driven to work, hot air is input to the periphery of the cell piece to dry the cell piece, after the cell piece is completely dried, a second telescopic rod 19 is driven to extend back and forth to enable a cleaning brush 18 to wipe the surface of the cell piece, impurities such as soldering flux powder and other dust are removed, the two groups of first telescopic rods 15 are contracted, the cell piece falls down from a notch on a main frame 6, the driving motor works to drive the rotating shaft 4 to rotate, so that the conveying belt 3 is operated to convey the battery pieces out.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (6)
1. The utility model provides a two-sided electrode solar wafer SMT pastes dress structure, includes brace table (1) and main frame (6), its characterized in that: a conveying groove (2) is formed in the top wall of the supporting table (1), a conveying belt (3) and two groups of rotating shafts (4) are arranged in the conveying groove (2), the two groups of rotating shafts (4) are sleeved on two sides of the inner side of the conveying belt (3), two groups of motors are installed in the supporting table (1), the two groups of motors are respectively in transmission connection with one ends of the two groups of rotating shafts (4), and the other ends of the two groups of rotating shafts (4) are both in transmission connection with the side wall of the inner cavity of the conveying groove (2);
adjusting shafts (10) are arranged on two sides of the top wall of the main frame (6), stand columns (14) are welded on the outer walls of the two groups of adjusting shafts (10), the stand columns (14) are in transmission connection with the main frame (6) through the adjusting shafts (10), one opposite sides of the two groups of stand columns (14) are welded with one ends of first telescopic rods (15), clamping grooves (16) are formed in the other ends of the two groups of first telescopic rods (15), through holes (11) are formed in two sides of the first telescopic rods (15), and electric heating rods (12) and fans (13) are fixedly installed in the through holes (11);
supporting bench (1) roof still welds there is base plate (17), base plate (17) are connected with plastic sheet (20) through second telescopic link (19), one side that plastic sheet (20) are close to supporting bench (1) is fixed to be bonded and has cleaning brush (18), main frame (6) roof welding has lifter (7), the roof of lifter (7) and the one side welding of branch (8), branch (8) level sets up, and its one side towards main frame (6) center is equipped with welding pen (9), welding pen (9) run through the roof and the diapire of branch (8).
2. An SMT (surface mount technology) mounting structure for double-sided electrode solar cells according to claim 1, wherein: the top wall of the supporting table (1) is provided with four groups of supporting legs (5), the bottom walls of the four groups of supporting legs (5) are welded with the top wall of the supporting table (1), and the other ends of the supporting legs are welded with the four corners of the bottom wall of the main frame (6) respectively.
3. An SMT (surface mount technology) mounting structure for double-sided electrode solar cells according to claim 1, wherein: the electric heating rods (12) are arranged on one side, away from the center of the main frame (6), of the fan (13), and the two groups of through holes (11) are symmetrically distributed on the upper side and the lower side of the first telescopic rod (15).
4. An SMT (surface mount technology) mounting structure for double-sided electrode solar cells according to claim 1, wherein: two ends of the second telescopic rod (19) are fixedly bonded with the side wall of the base plate (17) and the top wall of the plastic sheet (20) respectively, and the base plate (17) is arranged on one side, far away from the lifting rod (7), of the support platform (1).
5. An SMT (surface mount technology) mounting structure for double-sided electrode solar cells according to claim 1, wherein: the welding pen is characterized in that a notch penetrating through the top wall and the bottom wall of the main frame (6) is formed in the main frame (6), one end of the welding pen (9) faces to one side close to the center of the main frame (6), and the other end of the welding pen is electrically connected with an external power supply.
6. A process for producing a double-sided electrode solar cell SMT package structure according to any one of claims 1-5, comprising the steps of:
s1, selecting silicon wafers with consistent performance, and removing the silicon wafers with inconsistent performance;
s2, cleaning the silicon wafer, and removing impurities such as dust and metal cuttings and the like on the silicon wafer by using an organic solvent;
s3, corroding the surface of the silicon wafer by using an alkaline corrosion method, and removing a damage layer caused by mechanical cutting to flatten the surface of the silicon wafer;
s4, diffusion manufacturing, heating and introducing oxygen into the boron chloride sheet, generating diboron trichloride on the surface of the boron chloride sheet, enabling the diboron trichloride to have a chemical reaction with a silicon crystal to form borosilicate glass and deposit the borosilicate glass on the surface of the silicon crystal, and then utilizing nitrogen as protective gas to diffuse boron nitride under the high-temperature condition to form a pn junction;
s5, removing back junctions, evaporating a layer of aluminum on the back of the diffusion silicon wafer in vacuum, and heating to form an aluminum-silicon alloy layer on the silicon wafer;
and S6, manufacturing a positive electrode and a negative electrode, penetrating the slurry through the meshes of the screen, pressurizing the slurry part of the screen by using a scraper, and moving towards the other end of the screen to form the positive electrode and the negative electrode on the surface of the silicon wafer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811466745.1A CN109585602B (en) | 2018-12-03 | 2018-12-03 | SMT (surface mount technology) mounting structure of double-sided electrode solar cell and production process thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811466745.1A CN109585602B (en) | 2018-12-03 | 2018-12-03 | SMT (surface mount technology) mounting structure of double-sided electrode solar cell and production process thereof |
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| CN109585602B true CN109585602B (en) | 2021-03-23 |
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| CN103441173B (en) * | 2013-09-12 | 2015-12-23 | 绿尚太阳能科技（上海）有限公司 | Double-face electrode solar battery sheet SMT mounting structure and production technology thereof |
| CN105914260A (en) * | 2016-06-04 | 2016-08-31 | 江苏核新太阳能电力股份有限公司 | Cell string welding vision transmission mechanism |
| CN206452673U (en) * | 2017-01-04 | 2017-08-29 | 惠州市福客斯电子科技有限公司 | A kind of full-automatic LED high speed placement system |
| CN106816496A (en) * | 2017-01-10 | 2017-06-09 | 佘庆军 | The manufacture method of photovoltaic battery panel |
| CN207519074U (en) * | 2017-11-24 | 2018-06-19 | 惠州市美特伦科技有限公司 | A kind of SMT chip mounters patch feed device |
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