WO2005096396A1 - 太陽電池の製造方法 - Google Patents
太陽電池の製造方法 Download PDFInfo
- Publication number
- WO2005096396A1 WO2005096396A1 PCT/JP2005/006057 JP2005006057W WO2005096396A1 WO 2005096396 A1 WO2005096396 A1 WO 2005096396A1 JP 2005006057 W JP2005006057 W JP 2005006057W WO 2005096396 A1 WO2005096396 A1 WO 2005096396A1
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- WO
- WIPO (PCT)
- Prior art keywords
- cell
- heating
- flux
- solar cell
- manufacturing
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000010438 heat treatment Methods 0.000 claims abstract description 143
- 230000004907 flux Effects 0.000 claims abstract description 91
- 238000005476 soldering Methods 0.000 claims abstract description 27
- 230000032258 transport Effects 0.000 claims description 25
- 229910000679 solder Inorganic materials 0.000 claims description 16
- 238000002844 melting Methods 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 6
- 238000009835 boiling Methods 0.000 claims description 5
- 230000001678 irradiating effect Effects 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 4
- 230000004913 activation Effects 0.000 claims description 3
- 210000004027 cell Anatomy 0.000 abstract description 275
- 238000010248 power generation Methods 0.000 abstract description 12
- 239000011248 coating agent Substances 0.000 abstract description 2
- 238000000576 coating method Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 21
- 238000003825 pressing Methods 0.000 description 13
- 230000008569 process Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 10
- 239000005416 organic matter Substances 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- 238000001704 evaporation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000945 filler Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229920000139 polyethylene terephthalate Polymers 0.000 description 4
- 239000005020 polyethylene terephthalate Substances 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000011889 copper foil Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 238000000137 annealing Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 229910021419 crystalline silicon Inorganic materials 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000007429 general method Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- -1 polyethylene terephthalate Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 239000005341 toughened glass Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- IEQUNHXCJVILJQ-UHFFFAOYSA-N aluminum palladium Chemical compound [Al].[Pd] IEQUNHXCJVILJQ-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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
- H01L31/1876—Particular processes or apparatus for batch treatment of the devices
- H01L31/188—Apparatus specially adapted for automatic interconnection of solar cells in a module
-
- 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
Definitions
- the present invention relates to a method for manufacturing a solar cell, and more particularly to a method for manufacturing a solar cell in which a plurality of cells are electrically connected by a connecting member called a tab or a tab lead.
- a solar cell has a plurality of photoelectric conversion cells, and a string is formed by soldering tabs made of copper foil to adjacent cells and electrically connecting them to each other. This tab is used as a lead wire for connecting a plurality of cells in series or as an output terminal (see Patent Document 1).
- a plurality of cells 12 are first prepared (first step). Then, a liquid flux heated to a predetermined temperature is applied to a portion (dotted line in the figure) of the surface of the cells 12 where the tabs 14 are to be soldered (second step), and then the upper surface of the cell 12 and its adjacent area are coated. The tabs 14 are provided between the lower surfaces of the cells 12 to be formed (third step). Next, the tabs 14 are pressed onto the cells 12 from above so that the arranged tabs 14 do not float, and the tabs 14 are soldered (fourth step).
- the string 100 composed of the plurality of cells 12 washed in this way is disposed between the protective sheet on the back side or the translucent glass and the translucent glass on the front side, and the filler ( Solar cells were manufactured by encapsulation with EVA or the like. Further, in some cases, the residue on the surface of the cell 12 such as flux or organic matter is sealed without cleaning between the glass or between the glass and the sheet.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-168811
- the present invention has been made to solve the problems of the related art, and effectively removes the influence of the residual substances such as flux and organic substances remaining on the cell surface, thereby greatly improving the power generation efficiency.
- An object of the present invention is to provide a method for manufacturing a solar cell that can be improved.
- the first invention is a method of manufacturing a solar cell by electrically connecting a plurality of cells by tabs, and includes a flux applying step of applying a flux to the surface of the cell, and a step of applying the flux.
- Such a flux is used for improving the soldering, and contains a substance such as an organic substance. For example, as such a flux, a water-soluble flux can be used.
- a method for manufacturing a solar cell according to a second invention is characterized in that the heating temperature in the cell heating step is equal to or higher than the boiling point of the flux.
- a method for manufacturing a solar cell according to a second invention is characterized in that the heating temperature in the cell heating step is equal to or higher than the flux activation temperature.
- the heating temperature in the cell heating step is +1.
- It is characterized by a temperature of 40 ° C or more and 160 ° C or less, and a heating time of 1 minute or more and 5 minutes or less.
- the heating temperature in the cell heating step is +1.
- the temperature is 50 ° C and the heating time is 3 minutes.
- the heating temperature in the cell heating step is +1.
- the heating time higher than 60 ° C is less than 1 minute.
- the heating temperature in the cell heating step is +2.
- the heating time is not less than 00 ° C and less than 20 seconds.
- the heating temperature in the cell heating step is +2.
- It is characterized by a heating temperature of 50 ° C or higher and a heating time of less than 10 seconds.
- the method for manufacturing a solar cell according to an eighth invention is characterized in that in the cell heating step of each of the above inventions, the entire cell is heated.
- a method of manufacturing a solar cell according to a ninth aspect is characterized in that, in the cell heating step of each of the above aspects, a heat releasing means for preventing melting of solder for connecting the tab to the cell is provided.
- a method for manufacturing a solar cell according to a tenth aspect of the present invention is characterized in that the heat release means is a transport belt that transports cells and at least a tab portion comes into contact with the transport belt.
- the transport belt does not contact the tab portion in the tab string process, and the transport belt contacts the tab portion in the cell heating process.
- soldering is performed by blowing hot air onto the tab, and in the cell heating step, the cell is irradiated with infrared rays to irradiate the cell. It is characterized by heating. Hand irradiating infrared rays preferably The columns are lamp heaters.
- a flux applying step of applying a flux to the cell surface, and applying the flux A tab arranging step of arranging tabs over adjacent cells, a tab string step of soldering the tabs to the cells and connecting the tabs, and a cell heating step of heating the cells to which the tabs are connected.
- this cell heating step for example, by heating the flux to the boiling point or higher as in the second invention, the flux applied before (before) soldering the tab to the cell is evaporated. Will be able to do it.
- the cell heating step as in the third invention by heating to a temperature equal to or higher than the activation temperature of the flux, even if the flux remains, the influence of the flux can be made harmless.
- the cell is heated at + 140 ° C. or more and + 160 ° C. or less for 1 minute or more and 5 minutes or less, preferably, at + 150 ° C. for 3 minutes as in the fifth invention.
- the inconvenience of re-melting the solder connecting the tab to the cell can also be prevented.
- the flux can be effectively evaporated even if the heating time is less than 1 minute.
- the heating temperature in the cell heating step is + 200 ° C. or higher as in the seventh invention, the influence of the flux can be eliminated even if the heating time is less than 20 seconds.
- the heating temperature in the cell heating step is set to + 250 ° C. or higher as in the eighth invention, the influence of the flux can be eliminated even if the heating time is set to less than 10 seconds.
- the characteristics of the cell layer boundary surface are improved by the annealing effect, and the characteristics of the solar cell can be improved.
- the tab in the cell heating step, if a heat releasing means for preventing melting of the solder connecting the tab to the cell is provided, the tab is heated by the high temperature in the cell heating step.
- the heat release means also serves as a transport belt that transports the cells and at least the tab portion comes in contact with the transport, so that the tabs can be provided without special heat radiation or cooling devices. Can be prevented from re-melting the solder, and equipment costs can be reduced.
- the transport belt does not come into contact with the tab portion, and the transport belt comes into contact with the tab portion in the cell heating process.
- the temperature of the tab portion is set to the highest temperature, so that heat can be prevented from escaping from the conveyor belt, and the temperature of the tab portion can be reduced in the cell heating step.
- the soldering in the tab string step is performed by blowing hot air onto the tab, and the cell is heated by irradiating infrared rays in the cell heating step.
- the tub portion is heated intensively, and in the cell heating process, the entire cell can be heated widely.
- the present invention provides a method for removing a residue such as a flux or an organic substance applied to a cell surface without washing it, in order to improve the power generation efficiency of a solar cell.
- Flux and The purpose of removing the effects of organic matter and other residues and improving the power generation efficiency of the solar cell has been realized by a simple method that only heats the cell after the tab is soldered.
- Example 1
- FIG. 1 shows a manufacturing process diagram of a solar cell showing one embodiment of the present invention.
- This embodiment shows a general method of manufacturing a solar cell.
- the technique for manufacturing this solar cell is a well-known technique, and thus detailed description is omitted, and the main points will be described. .
- the cells 12 of the solar cell of the present invention are formed in a size of about 10 cm square, and the cells 12 are arranged in a line in the longitudinal direction of a pallet (not shown), and are detachably mounted to perform work in a later step. Is performed.
- a method for manufacturing a solar cell is to prepare an n-type crystalline silicon substrate 10 having a crystalline semiconductor such as polycrystalline silicon in which a plurality of cells 12 are divided and formed, and place the substrate on a pallet (see FIG. 1). 1 step).
- the substrate 10 on which the plurality of cells 12 are formed is illustrated in a fourth step described later, and the other steps illustrate a single cell 12.
- a liquid flux heated to a predetermined temperature is applied to a portion (dotted line in the drawing) of the plurality of divided cells 12 to which the tabs (connecting members) 14 are to be soldered (second step).
- two rows of tabs 14 are arranged in parallel across the adjacent cells 12 (third step).
- the tab 14 is made of a conductive copper foil or the like having a width of about 2 mm, and a plurality of branch electrodes of about 50 ⁇ m in width, which are not shown, are provided on both sides of the tab 14.
- the tabs 14 are placed in a cell with two rows of pressing tools (not shown) having a thickness substantially equal to the width of the tabs 14 and having heat resistance and no solder so that the arranged tabs 14 do not float. 12, the cells 12 are soldered in series with the tabs 14 and electrically connected (fourth step).
- the pressing tool is configured to press the tab 14 at the time of soldering, and to move in a direction in which the upper force of the cell 12 is separated after the soldering is completed.
- soldering to the cell 12 can be performed without pressing the tab 14, it is not always necessary to use a pressing tool.
- the flux used for soldering the tab 14 contains an organic substance or the like.
- the adjacent cells 12 are connected by the tabs 14 on the upper surface and the lower surface (not shown).
- the cells 12 are heated from + 140 ° C. to + 160 ° C. by a coil or rod-shaped electric heater 16 from below, and the heating time is 1 minute to 1 minute. Since the cell 12 is preferably heated to + 150 ° C for 3 minutes and the heating time is set to 3 minutes, the flux applied to the cell 12 is evaporated (fifth step).
- the n-type crystalline silicon substrate 10 which also has a crystalline semiconductor power such as polycrystalline silicon, is not damaged or damaged by the heating temperature and does not affect the power generation efficiency.
- the heating time is 3 minutes. It is heating for a short time.
- the electric heater 16 removes the cell 12 from the cell 12 without having to remove the residue such as the flux and the organic matter applied to the surface of the cell 12 by using hot water, a chemical, steam, or the like.
- the electric heater 16 removes the cell 12 from the cell 12 without having to remove the residue such as the flux and the organic matter applied to the surface of the cell 12 by using hot water, a chemical, steam, or the like.
- a glass having a light transmitting property and a weather resistance is laminated on the surface of the cell 12, thereby completing the solar cell.
- a transparent front cover such as a white sheet tempered glass, a film serving as a filler, a plurality of soldered cells 12 electrically connected in series, a film serving as a filler, and a film such as polyethylene terephthalate (PET).
- PET polyethylene terephthalate
- a resin-like resin film is formed by heating and pressurizing the weather-resistant backside cover in a state of being laminated in this order.
- a metal frame, a terminal box, or the like having a strength of aluminum or the like indicating the structure is attached to complete the solar cell module.
- the flux applied to the cell 12 was evaporated by irradiating the surface of the cell 12 with infrared rays using an infrared lamp equipped with a reflector capable of irradiating infrared rays intensively on the surface of the cell 12 above the cell 12.
- the flux can be evaporated by using this method. Also, it is possible to blow a hot air of a predetermined temperature on the surface of the cell 12 to evaporate the flux. When the hot air is blown onto the surface of the cell 12, the convection of the air on the surface of the cell 12 increases, so that the effect of evaporating the flux is enormous, and the flux evaporates in a shorter time than an electric heating heater or an infrared lamp. Can be done.
- the step of forming the plurality of divided cells 12 on the surface of the substrate 10, the step of applying the flux to the surfaces of the divided plurality of cells 12, and the step of applying the flux A step of arranging the tabs 14 over the contacting cells 12, a step of soldering and connecting the tabs 14 to the cells 12, and a step of heating the cells 12 to which the tabs 14 are connected by the electric heater 16. For example, by heating the cell 12 at + 150 ° C and heating for 3 minutes, the flux applied to the surface of the cell 12 can be evaporated and removed without having to wash the flux as before. be able to.
- the cell 12 is heated by the electric heater 16 to evaporate the flux applied to the surface of the cell 12, it is possible to greatly reduce the bubbles of the flux on the surface of the cell 12. As a result, irregular reflection of sunlight hitting the surface of the cell 12 can be prevented. Further, by evaporating the flux on the surface of the cell 12, the amount of the flux applied to the surface of the cell 12 can be almost eliminated. As a result, the flux remaining on the surface of the cell 12 can be made extremely thin, so that the sunlight in the cell 12 is hardly obstructed, and the power generation efficiency of the solar cell can be greatly improved.
- FIG. 2 shows a manufacturing process diagram of a solar cell string 100 showing an embodiment in this case. Note that, in FIG. 2, components denoted by the same reference numerals as those in FIG. 9 have the same or similar functions.
- the cell 12 of the embodiment is formed in a size of about 10 cm square, and two current collectors (about 2 mm in width) are provided in parallel on both sides thereof, and a large number of branch electrodes (two sides) are provided on both sides of the current collector.
- the width is about 50 m).
- the cells 12 are arranged in a line in the longitudinal direction of a pallet (not shown) and are removably mounted to perform work in a later step. In the method of manufacturing a solar cell, a cell 12 is prepared as shown in FIG. 2 and placed on a pallet (first step).
- a liquid flux (water-based) heated to a predetermined temperature is applied to a portion of the collector electrode on the surface of the cell 12, that is, a portion (dotted line in the figure) where the tabs 14, 14 as connection members are to be soldered (dotted line in the figure).
- the second step as a flux coating step.
- the tab 14 is made of a conductive copper foil or the like having a width of about 2 mm, and its surface is coated with solder.
- reference numeral 3 denotes a conveyor belt (conveying means) composed of an endless belt, which intermittently moves a predetermined distance after stopping for a predetermined period of time, thereby moving the cell 12 in the direction shown in FIG. It is transported rightward.
- the conveyor belt 3 includes a conveyor belt 3A located in a tab string process (soldering position) and a conveyor belt 3B located in a cell heating process. Three strips are provided at positions avoiding the tabs 14, 14, and the transfer belt 3B is provided at two positions at positions corresponding to the tabs 14, 14 on the lower surface of the cell 12.
- Reference numeral 4 denotes a pressing device disposed above and below a predetermined soldering position of the conveyor belt 3, and is composed of a plurality of pins 4 ', 4' 'which are moved up and down by driving means (not shown). ing. These pins 4 ⁇ ⁇ , 4 ⁇ ⁇ are made of solder-free material, and correspond to the vertical upper and lower sides of the two tabs 14, 14 arranged as shown in Figs. 3 and 4, respectively. It is arranged.
- a hot plate (lower heating means) 6 configured with an electric heater is provided below the conveying belt 3 at a position corresponding to a lower portion of the pressing device 4, and is always energized during work.
- a warm air heater (warm air heating means) 7, 7 are provided.
- Each of the hot air heaters 7 is composed of, for example, an electric heater and a blower that generate heat when energized, and the air (hot air) heated by the electric heater is concentrated on the tabs 14 and 14 by the blower. It sprays.
- the cell 12 to which the flux has been applied in the above-described second step is then placed on the transport belt 3A.
- tabs 14 are arranged on the left and right sides in the traveling direction of the conveyor belt 3A in correspondence with the collector electrodes (third step as a tab arrangement step).
- two tabs 14 are arranged corresponding to the collector electrodes on the lower surface of the first cell 12 constituting the string 100, and a half of the front part (the front part in the traveling direction of the conveyor belt 3) is pulled out in the traveling direction. It is.
- the transport belt 3 is moved by a predetermined distance, and the cell 12 is moved to the above-mentioned predetermined soldering position and stopped for a predetermined time. Therefore, tabs 14 are arranged corresponding to the collector electrodes on the upper surface of cell 12.
- the rear half of the tabs 14, 14 (tabs arranged on the upper surface of the first cell 12) (the rear part in the traveling direction of the transport belt 3) is pulled out, and the next cell 12 Will be placed.
- the upper surface of the cell 12 is a plus side
- the lower surface is a minus side.
- the pins 4 ⁇ , 4 ⁇ of the pressing device 4 drop during the stop time.
- the tabs 14 and 14 are pressed against the upper and lower surfaces of the cell 12 so as not to float. Further, if the solder can be soldered to the cell 12 without pressing the tab 14, the pressing device 4 may not necessarily be used.
- the hot air from the hot air heaters 7, 7 is intensively blown to the tubs 14, 14, so that the other parts of the cell 12 are excessively heated, and the temperature becomes abnormally high. There is no damage to the machine. In this case, the conveyor belt 3A does not contact the tabs 14 and 14 on the lower surface. Can be promoted.
- the cells 12 are mounted on the rear portions of the tabs 14 on the upper surface as described above. After that, the pins 4 ⁇ ⁇ , 4 ⁇ move in the direction in which the force on the cell 12 also moves away.
- the conveyor belt 3 is moved by a predetermined distance, the newly placed cell 12 is moved to the soldering position, and the tabs 14, 14 are again placed on the upper surface thereof.
- the string 12 is manufactured by soldering the cells 12 in series with the tabs 14.
- FIG. 5 and FIG. 6 show this fifth step (cell heating step). Note that the same reference numerals in FIGS. 3 and 4 in each drawing denote the same parts.
- FIG. 7 also shows the state of the transport belt 3 in the fourth step and the fifth step. In the cell 14, after the tab string step, the force of the transport belt 3A is transferred to the transport belt 3B in the cell heating step.
- a lamp heater 17 is disposed above a predetermined cell heating position which is located on the side of the transport belt 3 in the traveling direction from the soldering position.
- This lamp heater 17 has an infrared lamp power.
- the portion corresponding to the force tab 14 provided with the above-described hot plate 6 below the cell 12 at the cell heating position is preferably configured such that the hot plate 6 is deleted to prevent heating. ,.
- the cell 12 to which the tab 14 is soldered in the fourth step is moved to the cell heating position by the transport belts 3A and 3B.
- the cell 12 is also irradiated with infrared light from the lamp heater 17 with an upward force, and is heated by the hot plate 6 from below. Since the infrared rays from the lamp heater 17 are diffused, the infrared rays are applied to the entire upper surface of the cell 12, so that the cell 12 is entirely heated.
- the heating temperature is not less than + 140 ° C and not more than 160 ° C, and the heating time is not less than 1 minute and not more than 5 minutes.
- the cell 12 is heated at + 150 ° C for 3 minutes. I do.
- the flux applied to the cell 12 is evaporated. Since the heating temperature (150 ° C.) and the heating time (3 minutes) are used, the cell 12 is not deteriorated or damaged by heating, and the power generation efficiency is not affected. If the temperature is between + 140 ° C and + 160 ° C, the solder of the tub 14 does not re-melt.
- the cell heater 12 can be cooled by the lamp heater 17 without removing the residue such as the flux and the organic substance applied to the surface of the cell 12 with hot water, a chemical, steam, or the like as in the related art.
- the influence of residues such as organic substances mixed into the flux due to the evaporation of the flux can be reduced.
- a transparent front cover such as a white-plate tempered glass, a film serving as a filler, and a linear solar cell group (street) including a plurality of cells electrically connected in series. 100, 100 ⁇ , a film as a filler and a resin film such as polyethylene terephthalate (PET).
- PET polyethylene terephthalate
- a flux applying step (second step) of applying a flux to the surface of the cells 12 includes: A tab arranging step of arranging the tabs 14 over the adjacent cells 12 coated with the flux (third step), and a tab stringing step of soldering and connecting the tabs 14 to the cells 12 (fourth step) ) And a cell heating step (fifth step) of heating the cell 12 to which the tab 14 is connected.
- this cell heating step when the tab 14 is soldered to the cell 12 (before), It becomes possible to evaporate the generated flux.
- the cell 12 in the fifth step (cell heating step), the cell 12 is heated at + 140 ° C or higher and 160 ° C or lower for 1 minute to 5 minutes, preferably at + 150 ° C for 3 minutes.
- the heating temperature in the fifth step (cell heating step) is set to be higher than + 160 ° C.
- the heating time is set to an extremely short time of less than 1 minute.
- the heating temperature is shortened to + 200 ° C or more, and the heating time is shortened to less than 20 seconds.
- the flux of the cell 12 can be activated and evaporated in a very short time of less than 1 minute.
- the heating temperature is higher than + 160 ° C.
- the flux can be activated and evaporated in a very short time of less than 20 seconds.
- the heating temperature is set to + 250 ° C. or higher, the flux can be activated and evaporated in a very short time, that is, less than 10 seconds.
- the influence of the flux can be made harmless.
- the processing time (tact) in the fifth step (cell heating step) can be significantly reduced, and the production efficiency can be improved.
- the heating temperature in the cell heating step is preferably + 400 ° C. or less from the viewpoint of suppressing melting of the solder material and the characteristics of the solar cell.
- FIG. 8 is a diagram showing the heating temperature and the rate of change in the output characteristics of the cell 12 in such a cell heating step.
- the improvement of the output characteristics of the cell 12 becomes more remarkable by heating at a high temperature of + 200 ° C. or more, and further at a high temperature of + 250 ° C. or more. Further, by uniformly heating the entire cell 12 with the lamp heater 17, it is possible to improve the characteristics more uniformly.
- the tab 14 on the lower surface is in contact with the conveyor belt 3B.
- the heat is transmitted to the conveyor belt 3B by heat conduction at the tabs 14 and escapes, and the temperature decreases near the tabs 14. Therefore, the inconvenience that the solder connecting the tab 14 to the cell 12 is re-melted by the high-temperature heating in the fifth step (cell heating step) can be surely prevented.
- the conveyor belt 3B also serves as a means for releasing heat from the tab 14, it is possible to prevent extra heat radiation or solder re-melting of the tab 14 without providing a cooling device. Costs can also be reduced.
- As the conveyor belt a metal or nonmetal heat-resistant belt can be used as appropriate.
- the heating section is transported with high thermal conductivity. Further, as in the case of the second embodiment, it is more preferable to use a transfer belt that does not come into contact with the tab as illustrated in FIG.
- the upper force is applied to the cell by a lamp heater. May be sprayed over the entire body, or may be heated from below by an electric heater. When the whole is heated by hot air, convection of air also occurs, so that the effect of evaporating the flux can be improved. However, using a lamp heater has the effect of heating a wider area.
- a warm air heater is used, but this may also be heated by a lamp heater that irradiates infrared rays.
- a hot air heater has the effect of heating the tub more intensively than using a lamp heater.
- the transport belt is used as the heat releasing means.
- a heat releasing means such as a cooling device or a heat radiating plate for preventing the tabs from remelting the solder may be separately provided.
- the conveying belt is also used as a heat releasing means as in the third embodiment, the facility cost can be reduced as described above.
- FIG. 1 is a manufacturing process diagram of a solar cell showing one embodiment of the present invention.
- FIG. 2 is a manufacturing process diagram of a solar cell according to another embodiment of the present invention.
- FIG. 3 is a view illustrating a tab string process in FIG. 2.
- FIG. 4 is a view for explaining a tab string process of FIG. 2;
- FIG. 5 is a view for explaining a cell heating step in FIG. 2.
- FIG. 6 is a view explaining the cell heating step of FIG. 2;
- FIG. 7 is a plan view of the conveyor belt in a tab string step and a cell heating step in FIG. 2.
- FIG. 8 is a view showing a rate of change in output characteristics of a cell due to heating in a cell heating step.
- [9] is a conventional manufacturing process drawing of a solar cell.
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- Photovoltaic Devices (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05721651A EP1737048B1 (en) | 2004-03-31 | 2005-03-30 | Method for manufacturing solar cell |
CN200580010048XA CN1938865B (zh) | 2004-03-31 | 2005-03-30 | 太阳能电池的制造方法 |
JP2006511720A JP4286285B2 (ja) | 2004-03-31 | 2005-03-30 | 太陽電池の製造方法 |
US10/594,389 US8759663B2 (en) | 2004-03-31 | 2005-03-30 | Method of manufacturing solar battery |
DE602005022299T DE602005022299D1 (de) | 2004-03-31 | 2005-03-30 | Verfahren zur herstellung einer solarzelle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004104786 | 2004-03-31 | ||
JP2004-104786 | 2004-03-31 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005096396A1 true WO2005096396A1 (ja) | 2005-10-13 |
Family
ID=35064084
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/006057 WO2005096396A1 (ja) | 2004-03-31 | 2005-03-30 | 太陽電池の製造方法 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8759663B2 (ja) |
EP (1) | EP1737048B1 (ja) |
JP (2) | JP4286285B2 (ja) |
CN (1) | CN1938865B (ja) |
DE (1) | DE602005022299D1 (ja) |
ES (1) | ES2345393T3 (ja) |
WO (1) | WO2005096396A1 (ja) |
Cited By (12)
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JP2006147887A (ja) * | 2004-11-19 | 2006-06-08 | Nisshinbo Ind Inc | 太陽電池用タブリードのハンダ付け方法並びにそのための装置 |
WO2007077728A1 (ja) * | 2006-01-06 | 2007-07-12 | Nisshinbo Industries, Inc. | 太陽電池セルへのタブリードのハンダ付け方法 |
JP2007273830A (ja) * | 2006-03-31 | 2007-10-18 | Sanyo Electric Co Ltd | 太陽電池装置の製造方法 |
JP2009049436A (ja) * | 2004-03-31 | 2009-03-05 | Sanyo Electric Co Ltd | 太陽電池の製造方法 |
US7754962B2 (en) | 2005-06-16 | 2010-07-13 | Sanyo Electric Co., Ltd. | Method for manufacturing photovoltaic module |
JP2011124430A (ja) * | 2009-12-11 | 2011-06-23 | Nippon Avionics Co Ltd | 太陽電池モジュールの接合方法および接合装置 |
WO2012001815A1 (ja) * | 2010-07-02 | 2012-01-05 | 三菱電機株式会社 | 太陽電池モジュールおよびその製造方法 |
WO2012033059A1 (ja) * | 2010-09-07 | 2012-03-15 | ソニーケミカル&インフォメーションデバイス株式会社 | 太陽電池モジュールの製造方法、太陽電池セルの接続装置、太陽電池モジュール |
WO2013128569A1 (ja) * | 2012-02-28 | 2013-09-06 | 富士機械製造株式会社 | ストリング配線装置 |
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JP2014033240A (ja) * | 2013-11-21 | 2014-02-20 | Mitsubishi Electric Corp | 太陽電池モジュール |
JP2014523125A (ja) * | 2011-06-27 | 2014-09-08 | コミサリア ア レネルジィ アトミーク エ オ ゼネ ルジイ アルテアナティーフ | ヘテロ接合太陽電池を処理する方法 |
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CN110649125B (zh) * | 2019-09-26 | 2020-12-29 | 常州时创能源股份有限公司 | 电池串的搭接方法 |
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- 2005-03-30 ES ES05721651T patent/ES2345393T3/es active Active
- 2005-03-30 EP EP05721651A patent/EP1737048B1/en not_active Not-in-force
- 2005-03-30 CN CN200580010048XA patent/CN1938865B/zh not_active Expired - Fee Related
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Cited By (17)
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---|---|---|---|---|
JP2009049436A (ja) * | 2004-03-31 | 2009-03-05 | Sanyo Electric Co Ltd | 太陽電池の製造方法 |
JP4568359B2 (ja) * | 2004-03-31 | 2010-10-27 | 三洋電機株式会社 | 太陽電池の製造方法 |
JP2006147887A (ja) * | 2004-11-19 | 2006-06-08 | Nisshinbo Ind Inc | 太陽電池用タブリードのハンダ付け方法並びにそのための装置 |
US7754962B2 (en) | 2005-06-16 | 2010-07-13 | Sanyo Electric Co., Ltd. | Method for manufacturing photovoltaic module |
WO2007077728A1 (ja) * | 2006-01-06 | 2007-07-12 | Nisshinbo Industries, Inc. | 太陽電池セルへのタブリードのハンダ付け方法 |
JP2007273830A (ja) * | 2006-03-31 | 2007-10-18 | Sanyo Electric Co Ltd | 太陽電池装置の製造方法 |
JP2011124430A (ja) * | 2009-12-11 | 2011-06-23 | Nippon Avionics Co Ltd | 太陽電池モジュールの接合方法および接合装置 |
JPWO2012001815A1 (ja) * | 2010-07-02 | 2013-08-22 | 三菱電機株式会社 | 太陽電池モジュール |
WO2012001815A1 (ja) * | 2010-07-02 | 2012-01-05 | 三菱電機株式会社 | 太陽電池モジュールおよびその製造方法 |
US9515214B2 (en) | 2010-07-02 | 2016-12-06 | Mitsubishi Electric Corporation | Solar battery module and manufacturing method thereof |
WO2012033059A1 (ja) * | 2010-09-07 | 2012-03-15 | ソニーケミカル&インフォメーションデバイス株式会社 | 太陽電池モジュールの製造方法、太陽電池セルの接続装置、太陽電池モジュール |
JP2012059822A (ja) * | 2010-09-07 | 2012-03-22 | Sony Chemical & Information Device Corp | 太陽電池モジュールの製造方法、太陽電池セルの接続装置、太陽電池モジュール |
JP2014523125A (ja) * | 2011-06-27 | 2014-09-08 | コミサリア ア レネルジィ アトミーク エ オ ゼネ ルジイ アルテアナティーフ | ヘテロ接合太陽電池を処理する方法 |
WO2013128569A1 (ja) * | 2012-02-28 | 2013-09-06 | 富士機械製造株式会社 | ストリング配線装置 |
JPWO2013128569A1 (ja) * | 2012-02-28 | 2015-07-30 | 富士機械製造株式会社 | ストリング配線装置 |
JP2013237059A (ja) * | 2012-05-14 | 2013-11-28 | Eco & Engineering Co Ltd | インターコネクタと太陽電池素子の接合装置及び接合方法 |
JP2014033240A (ja) * | 2013-11-21 | 2014-02-20 | Mitsubishi Electric Corp | 太陽電池モジュール |
Also Published As
Publication number | Publication date |
---|---|
EP1737048B1 (en) | 2010-07-14 |
JPWO2005096396A1 (ja) | 2008-02-21 |
EP1737048A1 (en) | 2006-12-27 |
JP4568359B2 (ja) | 2010-10-27 |
JP2009049436A (ja) | 2009-03-05 |
JP4286285B2 (ja) | 2009-06-24 |
US8759663B2 (en) | 2014-06-24 |
DE602005022299D1 (de) | 2010-08-26 |
ES2345393T3 (es) | 2010-09-22 |
US20070283995A1 (en) | 2007-12-13 |
CN1938865A (zh) | 2007-03-28 |
EP1737048A4 (en) | 2008-01-16 |
CN1938865B (zh) | 2010-04-21 |
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