CN111554775A - Automatic drying system for solar cell after silver paste printing - Google Patents
Automatic drying system for solar cell after silver paste printing Download PDFInfo
- Publication number
- CN111554775A CN111554775A CN202010353454.2A CN202010353454A CN111554775A CN 111554775 A CN111554775 A CN 111554775A CN 202010353454 A CN202010353454 A CN 202010353454A CN 111554775 A CN111554775 A CN 111554775A
- Authority
- CN
- China
- Prior art keywords
- oven
- platform
- loading
- basket
- flower basket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001035 drying Methods 0.000 title claims abstract description 54
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 title claims abstract description 34
- 229910052709 silver Inorganic materials 0.000 title claims abstract description 31
- 239000004332 silver Substances 0.000 title claims abstract description 31
- 238000007639 printing Methods 0.000 title claims abstract description 25
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 65
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 61
- 239000010703 silicon Substances 0.000 claims abstract description 61
- 235000012431 wafers Nutrition 0.000 claims abstract description 58
- 230000007246 mechanism Effects 0.000 claims abstract description 51
- 238000010438 heat treatment Methods 0.000 claims abstract description 39
- 238000007599 discharging Methods 0.000 claims abstract description 25
- 238000012546 transfer Methods 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 229910021417 amorphous silicon Inorganic materials 0.000 description 9
- 229910021419 crystalline silicon Inorganic materials 0.000 description 7
- 238000002161 passivation Methods 0.000 description 6
- 239000000969 carrier Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000010408 film Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003960 organic solvent Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000001291 vacuum drying Methods 0.000 description 2
- MARUHZGHZWCEQU-UHFFFAOYSA-N 5-phenyl-2h-tetrazole Chemical compound C1=CC=CC=C1C1=NNN=N1 MARUHZGHZWCEQU-UHFFFAOYSA-N 0.000 description 1
- 241001391944 Commicarpus scandens Species 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- KTSFMFGEAAANTF-UHFFFAOYSA-N [Cu].[Se].[Se].[In] Chemical compound [Cu].[Se].[Se].[In] KTSFMFGEAAANTF-UHFFFAOYSA-N 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Images
Classifications
-
- 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
- H01L31/186—Particular post-treatment for the devices, e.g. annealing, impurity gettering, short-circuit elimination, recrystallisation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
-
- 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
- H01L31/04—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 adapted as photovoltaic [PV] conversion devices
- H01L31/042—PV modules or arrays of single PV cells
- H01L31/048—Encapsulation of modules
-
- 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
-
- 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
-
- 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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Electromagnetism (AREA)
- Photovoltaic Devices (AREA)
Abstract
The invention discloses an automatic drying system for solar cells after silver paste printing, which comprises a feeding conveying line, a loading platform, an oven, an unloading platform, a discharging conveying line and a basket backflow mechanism, wherein the feeding conveying line is arranged on the loading platform; a feeding manipulator is arranged between the feeding conveying line and the loading platform; a loading transfer mechanism is arranged between the loading platform and the oven; a discharging transfer mechanism is arranged between the oven and the discharging platform; a discharging manipulator is arranged between the discharging platform and the discharging conveying line; and the empty flower basket on the unloading platform after the silicon wafer is unloaded flows back to the loading platform through the flower basket backflow mechanism to be repeatedly loaded. The automatic feeding device can realize automatic feeding of the silicon wafers, automatic feeding of the flower basket into the oven, automatic heating and drying of the silicon wafers in the oven, automatic discharging of the flower basket to the unloading platform, automatic discharging of the silicon wafers and backflow reuse of the empty flower basket, thereby realizing automatic on-line feeding, drying and discharging, greatly improving the capacity of the silicon wafers needing to be dried for a long time and simultaneously reducing the floor area of the equipment.
Description
Technical Field
The invention relates to the technical field of solar cell preparation, in particular to an automatic drying system for solar cells after silver paste printing.
Background
Photovoltaic power generation has become a technology that can replace fossil energy, relying on the ever-decreasing production costs and the increase in photoelectric conversion efficiency in recent years. Solar cells can be roughly classified into two types according to the material of the photovoltaic cell sheet: one is a crystalline silicon solar cell, including a monocrystalline silicon solar cell, a polycrystalline silicon solar cell; the other type is a thin film solar cell, which mainly comprises an amorphous silicon solar cell, a cadmium telluride solar cell, a copper indium gallium selenide solar cell and the like. At present, crystalline silicon solar cells using high-purity silicon materials as main raw materials are mainstream products, and account for more than 80%.
In a crystalline silicon solar power generation system, one of the most central steps for realizing photoelectric conversion is a process of processing crystalline silicon into a cell for realizing photoelectric conversion, so that the photoelectric conversion efficiency of the cell also becomes a key index for embodying the technical level of the crystalline silicon solar power generation system.
Improving cell efficiency and establishing passivation contacts is critical. Because photogenerated carriers move rapidly in the silicon wafer, once the photogenerated carriers contact the surface, the photogenerated carriers are recombined and cannot be collected into current to generate power. If a special protective film is plated on the surface, such as silicon oxide, silicon nitride, aluminum oxide, amorphous silicon and the like, because of saturation of surface crystalline silicon surface chemical bonds and a charge field formed between the film and crystalline silicon, the special protective film can effectively prevent minority carriers from being compounded on the surface.
To further improve efficiency, new cell theory simulations require full coverage of the passivation layer, with carriers reaching the conductive layer overlying the passivation layer through tunneling. The HIT battery is a new battery designed based on this concept. The HIT battery is characterized in that a layer of thin amorphous silicon (3-5 nm) covers the front side and the back side of a silicon wafer, and then the surface of the amorphous silicon is plated with phosphorus-doped amorphous silicon and boron-doped amorphous silicon respectively. Due to the fact that the amorphous silicon has excellent passivation performance, the conversion efficiency of the HIT battery is greatly improved. However, the amorphous silicon passivation can only bear a low-temperature process, the amorphous silicon passivation effect is immediately lost at a temperature above 250 ℃, and the conventional silver paste needs to be sintered at 800 ℃ to achieve good conductivity and adhesion, which is not suitable for printing silver paste which is mature in application on conventional batteries. Therefore, the low-temperature silver paste is specially developed for the HIT battery, the paste is transferred to the surface of the silicon wafer through screen printing by using the low-temperature silver paste to form silver lines, the silver paste needs to be dried after being printed to remove an organic solvent carrier, and finally needs to be solidified. The drying temperature and the curing temperature of the low-temperature silver paste are only 200 ℃ or below, and the low-temperature silver paste and the silicon chip are combined through a binder in the silver paste. Generally, the low-temperature silver paste needs to be dried at 80-150 ℃ for about 10 minutes before entering the next printing process after being dried and cured, and hot air or infrared heating or combination of the hot air and the infrared heating is adopted for drying and heating (because organic gas is volatilized in the drying process, the air needs to be blown out).
Because the silver wire printing adopts a screen printing technology, the capacity of a single printer can reach 3000 pieces/hour or more, the HIT battery production needs to print silver wires (main grids and fine grids) which are arranged for many times, the next printing can be carried out after drying is needed in each printing, and after the last printing, the printing and the curing (curing at 200 ℃ for 30-60 minutes) are needed to achieve the best conductive performance of the silver wires. The printing process and the drying and curing process of one production line are connected together, so that the printing capacity and the drying and curing capacity are best matched.
In order to increase the drying and curing capacity, the prior art generally adopts a plurality of tracks of chain type to convey silicon wafers, the silicon wafers are horizontally laid on a conveying chain, and the conveying chain is dried and cured through a high temperature setting area.
There are also proposed improvements: 1. the silicon wafer is vertically placed between two clamping strips, and a plurality of rails continuously pass through a heating zone forwards in a parallel chain manner, so that the density of the silicon wafer placed in unit length is greatly increased, but the silicon wafer placed vertically is easy to break in the running process between the clamping strips, and the silver wire adhesive force is uneven due to uneven heating in the vertical direction; 2. the silicon chip is placed in the basket of flowers, once can put 50~100, and the basket of flowers is placed and is passed through the zone of heating on a chain track, and the chain is continuous forward motion in the oven, and its shortcoming is that it is difficult for getting rid of to be heated unevenly and between the silicon chip in the basket of flowers in the same silicon chip, and organic solvent stops and need a large amount of air blowing to flow between the silicon chip and the extravagant energy.
Disclosure of Invention
In order to solve the technical problem, the invention provides an automatic drying system for solar cells after silver paste printing, which comprises a feeding conveying line, a loading platform, an oven, an unloading platform, a discharging conveying line and a basket backflow mechanism, wherein the feeding conveying line is arranged on the loading platform;
a feeding manipulator is arranged between the feeding conveying line and the loading platform, and the silicon wafers printed with silver paste are grabbed from the feeding conveying line through the feeding manipulator and then sequentially placed in a flower basket of the loading platform; a loading and transferring mechanism is arranged between the loading platform and the drying oven, and the basket filled with the silicon wafers on the loading platform is transferred into the drying oven through the loading and transferring mechanism so as to heat and dry the silicon wafers; a discharging and transferring mechanism is arranged between the oven and the unloading platform, and the basket loaded with the dried silicon wafers is transferred to the unloading platform through the discharging and transferring mechanism; a blanking manipulator is arranged between the unloading platform and the blanking conveying line, and silicon wafers in the flower basket on the loading platform are sequentially grabbed and placed on the blanking conveying line in sequence through the blanking manipulator; and the empty flower basket on the unloading platform after the silicon wafer is unloaded flows back to the loading platform through the flower basket backflow mechanism to be repeatedly loaded.
The oven in the automatic drying system after the above-mentioned solar wafer printing silver thick liquid has two kinds of structures:
1) the oven includes a box having a feed gate valve corresponding to the loading station and a discharge gate valve corresponding to the unloading station; the inner wall of the box body is provided with a heating mechanism for heating and drying the silicon wafers on the flower basket; the box body is connected to a vacuum pump through a vacuum tube and a vacuum valve; corresponding to the oven with the structure 1), the loading transfer mechanism and the unloading transfer mechanism are both chain-type rails or sliding rails or flower basket transfer mechanical arms.
2) The drying oven comprises an oven body, and the top of the oven body is provided with an oven cover for the flower basket to enter and exit; the inner wall of the box body is provided with a heating mechanism for heating and drying the silicon wafers on the flower basket; the box body is connected to a vacuum pump through a vacuum tube and a vacuum valve; corresponding to the oven of the structure 2), the loading transfer mechanism and the unloading transfer mechanism are both basket transfer mechanical arms.
In the oven with the two structures, the heating mechanism is a resistance wire or a plurality of heating lamp tubes which are arranged.
Wherein, the heating lamp tube is an infrared light tube, a visible light tube or an ultraviolet light tube.
Through the technical scheme, the invention has the following advantages:
1) the automatic feeding of the silicon wafers from the feeding conveying line to the flower basket on the loading table, the automatic feeding of the flower basket on which the silicon wafers are arranged into the drying oven, the automatic discharging of the heated and dried flower basket in the drying oven to the unloading table, the automatic discharging of the flower basket on the unloading table to the discharging conveying line and the backflow reuse of the flower basket above the unloading table to the loading table through the flower basket backflow mechanism can be realized, so that the automatic online feeding, drying and discharging can be realized;
2) the silicon wafers are placed in the flower basket in a flat lying manner, and are heated and dried in the drying oven through the heating mechanisms arranged on the periphery, so that the silicon wafers can be uniformly heated, and the silicon wafers can be quickly and uniformly dried;
3) the volatile organic gas can be uniformly and effectively pumped out in a vacuum pumping mode, and the vacuum state is more favorable for heating and drying the silicon wafer, so that a large amount of air blowing is not needed, and the energy consumption is effectively reduced;
4) each basket can collect 100-400 silicon wafers and stay in the oven for drying for 3-10 minutes, the drying mode that the baskets directly enter the oven has the advantages of high productivity and small occupied area, the basket drying device can be used for drying 2 or more baskets simultaneously through optimization of the structure of the oven, the basket drying device can be matched with the productivity of silver wire screen printing, and the productivity can reach 3600 wafers/hour or more.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below.
FIG. 1 is a schematic structural view of the automatic drying system with opposite-side loading and unloading in embodiments 1 and 2;
fig. 2 is a schematic structural view of the same-side feeding and discharging automatic drying system in embodiment 3.
The figures in the drawings represent:
11. a feeding conveying line; 12. a blanking conveying line; 21. a loading table; 22. unloading the platform; 30. an oven; 31. heating the lamp tube; 32. a vacuum pump; 33. a vacuum valve; 34. a vacuum tube; 40. a flower basket; 50. and (3) a silicon wafer.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
Example 1:
referring to fig. 1, the invention provides an automatic drying system for solar cells after silver paste printing, which comprises a feeding conveyor line 11, a loading table 21, an oven 30, an unloading table 22, a discharging conveyor line 12 and a basket backflow mechanism, which are sequentially arranged;
a feeding manipulator is arranged between the feeding conveying line 11 and the loading platform 21, and the silicon wafers 50 printed with silver paste are grabbed from the feeding conveying line 11 and then sequentially placed in the flower basket 40 of the loading platform 21 through the feeding manipulator; a loading transfer mechanism is arranged between the loading platform 21 and the oven 30, and the basket 40 filled with the silicon wafers 50 on the loading platform 21 is transferred into the oven 30 through the loading transfer mechanism so as to heat and dry the silicon wafers 50; a blanking transfer mechanism is arranged between the oven 30 and the unloading platform 22, and the basket 40 loaded with the dried silicon wafers 50 is transferred to the unloading platform 22 through the blanking transfer mechanism; a blanking manipulator is arranged between the unloading platform 22 and the blanking conveying line 12, and the silicon wafers 50 in the flower basket 40 on the loading platform 21 are sequentially grabbed and placed on the blanking conveying line 12 in sequence through the blanking manipulator; the empty basket 40 after unloading the silicon wafer 50 on the unloading table 22 is returned to the loading table 21 by the basket returning mechanism for repeated loading.
Wherein the oven 30 comprises a box capable of accommodating one or more baskets 40 at the same time, the box having a feed gate valve corresponding to the loading station 21 and a discharge gate valve corresponding to the unloading station 22; the inner wall of the box body is provided with a heating mechanism for heating and drying the silicon wafers 50 on the flower basket 40; the box body is connected to a vacuum pump 32 through a vacuum pipe 34 and a vacuum valve 33; the loading and unloading transfer mechanism and the loading and unloading transfer mechanism are both chain tracks or slide rails or a flower basket transfer mechanical arm.
Wherein, the heating mechanism is a resistance wire or a plurality of heating lamp tubes 31 arranged; the heating lamp 31 is an infrared light lamp, a visible light lamp or an ultraviolet light lamp.
The working principle of the embodiment 1 is as follows:
1) feeding the flower basket 40: the flower basket 40 is located on the loading platform 21, the silicon chips 50 printed with the silver paste are stored in the flower basket 40 through a feeding manipulator, and 100-400 silicon chips 50 can be collected by one flower basket 40;
2) transferring the flower basket 40: opening a feed gate valve, transferring the baskets 40 filled with the silicon wafers 50 to the oven 30 through a chain rail or a slide rail, and then closing the feed gate valve to seal the oven 30, or grabbing one or more baskets 40 on the loading table 21 and placing the baskets 40 into the oven 30 by using a basket transfer mechanical arm, wherein one or more baskets 40 can be simultaneously accommodated in the oven 30, and 2 baskets 40 are usually placed side by side at the same time;
3) the oven 30 is evacuated: opening a vacuum valve 33 to vacuumize the closed oven 30 through a vacuum pump 32, wherein the vacuum degree is 0.01-0.5 atmospheric pressure;
4) heating and drying the silicon wafer 50: heating temperature of a heating mechanism in the oven 30 is 100-200 ℃, and the flower basket 40 stays in the oven 30 which is vacuumized and heated for 3-10 minutes for vacuum drying;
5) stopping heating and vacuumizing, and opening the vacuum valve 33 to backfill the oven 30 with atmosphere;
6) transferring the flower basket 40: opening the discharge gate valve to transfer the baskets 40 from within the oven 30 onto the unloading station 22 via the chain track or slide;
7) blanking of the flower basket 40: on the unloading station 22, the silicon wafers 50 are taken out from the basket 40 by the unloading manipulator and placed on the unloading conveyor line 12 in sequence to be sent to the next process, such as the next printing process;
8) and returning the empty flower basket 40 to the loading platform 21 through the flower basket backflow mechanism, and repeating the steps 1) -7) to realize continuous feeding, drying and discharging of the silicon wafers 50.
Example 2:
referring to fig. 1, the present embodiment 2 is different from embodiment 1 in that the oven 30 includes a box body capable of accommodating one or more flower baskets 40 at the same time, and a box cover for the flower baskets 40 to enter and exit is disposed on the top of the box body; the inner wall of the box body is provided with a heating mechanism for heating and drying the silicon wafers 50 on the flower basket 40; the box body is connected to a vacuum pump 32 through a vacuum pipe 34 and a vacuum valve 33; the loading and shifting mechanism and the unloading and shifting mechanism are flower basket shifting mechanical arms.
The working principle of the embodiment 2 is as follows:
1) feeding the flower basket 40: the flower basket 40 is located on the loading platform 21, the silicon chips 50 printed with the silver paste are stored in the flower basket 40 through a feeding manipulator, and 100-400 silicon chips 50 can be collected by one flower basket 40;
2) transferring the flower basket 40: opening a box cover of the oven 30, hoisting the basket 40 filled with the silicon wafers 50 on the loading platform 21 into the oven 30 from the box cover at the upper end through a basket transfer mechanical arm, and then closing the box cover to seal the oven 30, wherein one or more baskets 40 can be simultaneously accommodated in the oven 30, and usually 2 baskets 40 are simultaneously arranged side by side;
3) the oven 30 is evacuated: opening a vacuum valve 33 to vacuumize the closed oven 30 through a vacuum pump 32, wherein the vacuum degree is 0.01-0.5 atmospheric pressure;
4) heating and drying the silicon wafer 50: heating temperature of a heating mechanism in the oven 30 is 100-200 ℃, and the flower basket 40 stays in the oven 30 which is vacuumized and heated for 3-10 minutes for vacuum drying;
5) stopping heating and vacuumizing, and opening the vacuum valve 33 to backfill the oven 30 with atmosphere;
6) transferring the flower basket 40: opening the box cover, lifting and taking out the flower basket 40 from the oven 30 through a flower basket transfer mechanical arm, and transferring the flower basket onto the unloading platform 22;
7) blanking of the flower basket 40: on the unloading station 22, the silicon wafers 50 are taken out from the basket 40 by the unloading manipulator and placed on the unloading conveyor line 12 in sequence to be sent to the next process, such as the next printing process;
8) and returning the empty flower basket 40 to the loading platform 21 through the flower basket backflow mechanism, and repeating the steps 1) -7) to realize continuous feeding, drying and discharging of the silicon wafers 50.
Example 3:
referring to fig. 2, the present embodiment 3 is based on embodiment 1 or 2, and is different from embodiment 1 or 2 in that a loading station 21 and an unloading station 22 are provided on the same side of an oven 30; a plurality of flower baskets 40 full of silicon wafers 50 are arranged on the loading table 21 and transferred into the oven 30 through a feeding and transferring mechanism; after drying, the flower basket 40 is transferred to the unloading station 22 by the unloading transfer mechanism. The working principle is the same as 1 or 2.
Example 4:
design for curing of HIT cells: when the curing time needs 30 minutes or more, according to the embodiments 1 to 3, if 100 silicon wafers 50 are placed in one basket 40, 5 baskets 40 are dried/cured in each oven 30 at the same time, and the capacity can only reach 1000 wafers/hour; in order to increase the productivity, the drying oven 30 should dry/cure more than 15 baskets 40 at the same time, so 3 to 4 drying ovens 30 are required to be arranged in parallel, and a plurality of drying ovens 30 may share a feeding line and a discharging line, or may be separately arranged. The specific working principle is the same as that of any one of embodiments 1-3.
Various modifications to the above-described embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention, such as replacing a flower basket with a device similar to a flower basket that can store multiple silicon slices 50 at a time, and such as placing the flower basket flat, upright, or inclined, and are not particularly limited. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The automatic drying system for the solar cell after silver paste printing is characterized by comprising a feeding conveying line, a loading platform, an oven, an unloading platform, a discharging conveying line and a basket backflow mechanism; the oven is connected to a vacuum pump through a vacuum tube and a vacuum valve;
a feeding manipulator is arranged between the feeding conveying line and the loading platform, and the silicon wafers printed with silver paste are grabbed from the feeding conveying line through the feeding manipulator and then sequentially placed in a flower basket of the loading platform; a loading and transferring mechanism is arranged between the loading platform and the drying oven, and the basket filled with the silicon wafers on the loading platform is transferred into the drying oven through the loading and transferring mechanism so as to heat and dry the silicon wafers; a discharging and transferring mechanism is arranged between the oven and the unloading platform, and the basket loaded with the dried silicon wafers is transferred to the unloading platform through the discharging and transferring mechanism; a blanking manipulator is arranged between the unloading platform and the blanking conveying line, and silicon wafers in the flower basket on the loading platform are sequentially grabbed and placed on the blanking conveying line in sequence through the blanking manipulator; and the empty flower basket on the unloading platform after the silicon wafer is unloaded flows back to the loading platform through the flower basket backflow mechanism to be repeatedly loaded.
2. The automatic drying system for the solar cell after silver paste printing is characterized in that the oven comprises a box body, wherein the box body is provided with a feeding gate valve corresponding to the loading platform and a discharging gate valve corresponding to the unloading platform; the inner wall of the box body is provided with a heating mechanism for heating and drying the silicon wafers on the flower basket; the box body is connected to a vacuum pump through a vacuum tube and a vacuum valve.
3. The automatic drying system for solar cells after silver paste printing according to claim 2, wherein the loading and unloading transfer mechanism and the loading and unloading transfer mechanism are both chain rails or slide rails or basket transfer mechanical arms.
4. The automatic drying system for the solar cell after silver paste printing is characterized in that the oven comprises a box body, and a box cover for the flower basket to enter and exit is arranged at the top of the box body; the inner wall of the box body is provided with a heating mechanism for heating and drying the silicon wafers on the flower basket; the box body is connected to a vacuum pump through a vacuum tube and a vacuum valve.
5. The automatic drying system for solar cells after silver paste printing according to claim 4, wherein the loading and transferring mechanism and the unloading and transferring mechanism are basket transferring mechanical arms.
6. The automatic drying system for the solar cell after silver paste printing according to any one of claims 2 to 5, wherein the heating mechanism is a resistance wire or a plurality of heating lamp tubes arranged.
7. The automatic drying system for solar cells after silver paste printing according to claim 6, wherein the heating lamp tube is an infrared light tube, a visible light tube or an ultraviolet light tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010353454.2A CN111554775A (en) | 2020-04-29 | 2020-04-29 | Automatic drying system for solar cell after silver paste printing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010353454.2A CN111554775A (en) | 2020-04-29 | 2020-04-29 | Automatic drying system for solar cell after silver paste printing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111554775A true CN111554775A (en) | 2020-08-18 |
Family
ID=72005960
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010353454.2A Pending CN111554775A (en) | 2020-04-29 | 2020-04-29 | Automatic drying system for solar cell after silver paste printing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111554775A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197561A (en) * | 2020-09-25 | 2021-01-08 | 创富东日(深圳)科技有限公司 | Curing device and drying equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202158740U (en) * | 2011-06-29 | 2012-03-07 | 恒光（福建）光电科技有限公司 | Vacuum drying device of solar cell panel |
| CN106024984A (en) * | 2016-07-09 | 2016-10-12 | 东莞市科隆威自动化设备有限公司 | Drying sintering furnace and drying sintering method |
| CN206768282U (en) * | 2017-05-24 | 2017-12-19 | 江苏荣马新能源有限公司 | Manufacture of solar cells drying system |
| CN208653156U (en) * | 2018-07-06 | 2019-03-26 | 林炎新 | A kind of vertical drier using rotaring wheel structure |
| CN109916174A (en) * | 2019-03-20 | 2019-06-21 | 深圳市腾达工业自动设备有限公司 | A kind of quiescence in high temperature furnace |
-
2020
- 2020-04-29 CN CN202010353454.2A patent/CN111554775A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202158740U (en) * | 2011-06-29 | 2012-03-07 | 恒光（福建）光电科技有限公司 | Vacuum drying device of solar cell panel |
| CN106024984A (en) * | 2016-07-09 | 2016-10-12 | 东莞市科隆威自动化设备有限公司 | Drying sintering furnace and drying sintering method |
| CN206768282U (en) * | 2017-05-24 | 2017-12-19 | 江苏荣马新能源有限公司 | Manufacture of solar cells drying system |
| CN208653156U (en) * | 2018-07-06 | 2019-03-26 | 林炎新 | A kind of vertical drier using rotaring wheel structure |
| CN109916174A (en) * | 2019-03-20 | 2019-06-21 | 深圳市腾达工业自动设备有限公司 | A kind of quiescence in high temperature furnace |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197561A (en) * | 2020-09-25 | 2021-01-08 | 创富东日(深圳)科技有限公司 | Curing device and drying equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111540809A (en) | Solar cell silicon chip drying and curing integrated equipment | |
| CN112582504A (en) | Integrated equipment and process for solar cell film coating and light injection | |
| CN108123000B (en) | Nano rod type antimony selenide solar cell and preparation method thereof | |
| Bi et al. | A GaAs nanowire/P3HT hybrid photovoltaic device | |
| CN104993006A (en) | Transition metallic oxide-silicon heterojunction solar cell and preparation method thereof | |
| JP2012533178A (en) | Photoelectric conversion device containing zinc | |
| CN107946384B (en) | A kind of silicon-PEDOT:PSS hybrid solar cell and preparation method thereof | |
| CN110047998A (en) | A kind of immersion prepares the equipment and application method of perovskite solar battery | |
| CN219360607U (en) | Automatic drying system for solar cell after silver paste printing | |
| CN111554775A (en) | Automatic drying system for solar cell after silver paste printing | |
| CN213733997U (en) | Drying equipment for drying solar cell silicon wafer | |
| CN111326656B (en) | Solid additive for organic polymer solar cell | |
| CN213767785U (en) | Drying oven for drying or curing solar cell silicon wafer | |
| CN208366021U (en) | A kind of card plug formula silicon chip drying furnace | |
| CN102790176A (en) | Organic solar battery with mixed type heterojunction serving as hole transporting layer and preparation method of organic solar battery | |
| CN111532016A (en) | Drying equipment for drying solar cell silicon wafer | |
| CN214152925U (en) | Integrated equipment for coating and light injection of solar cell | |
| CN212161839U (en) | Solar cell silicon chip drying and curing integrated equipment | |
| JP5274326B2 (en) | Manufacturing method of solar cell module | |
| KR101106940B1 (en) | Laminator for photovoltaic module and the using Laminating method | |
| CN111634116A (en) | Drying oven for drying or curing solar cell silicon wafer | |
| CN212339925U (en) | A integrative stove of solidification passivation for solar cell production | |
| JP5799252B2 (en) | Manufacturing method of solar cell module | |
| CN113629193A (en) | Organic solar cell with sandwich-configuration active layer and preparation method thereof | |
| Weingarten et al. | Low-temperature processed hybrid organic/silicon solar cells with power conversion efficiency up to 6.5% |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200818 |
|
| RJ01 | Rejection of invention patent application after publication |