WO2014132575A1 - Procédé de production de module de cellule solaire, et système d'application adhésive de module de cellule solaire - Google Patents

Procédé de production de module de cellule solaire, et système d'application adhésive de module de cellule solaire Download PDF

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Publication number
WO2014132575A1
WO2014132575A1 PCT/JP2014/000657 JP2014000657W WO2014132575A1 WO 2014132575 A1 WO2014132575 A1 WO 2014132575A1 JP 2014000657 W JP2014000657 W JP 2014000657W WO 2014132575 A1 WO2014132575 A1 WO 2014132575A1
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WO
WIPO (PCT)
Prior art keywords
solar cell
adhesive
receiving surface
light receiving
back surface
Prior art date
Application number
PCT/JP2014/000657
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English (en)
Japanese (ja)
Inventor
聡史 鈴木
慶之 工藤
正也 中井
治寿 橋本
Original Assignee
三洋電機株式会社
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Application filed by 三洋電機株式会社 filed Critical 三洋電機株式会社
Priority to JP2015502743A priority Critical patent/JPWO2014132575A1/ja
Publication of WO2014132575A1 publication Critical patent/WO2014132575A1/fr

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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
    • H01L31/04—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
    • H01L31/05—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells
    • H01L31/0504—Electrical interconnection means between PV cells inside the PV module, e.g. series connection of PV cells specially adapted for series or parallel connection of solar cells in a module
    • 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
    • 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
    • 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 solar cell module manufacturing method and a solar cell module adhesive coating system.
  • the solar cell module includes a plurality of solar cells, a wiring material for connecting the solar cells, a filler for sealing them, and the like.
  • the wiring material is bonded onto the electrode of the solar cell, and solder has been mainly used for the bonding.
  • solder has been mainly used for the bonding.
  • the solar cell may be warped or cracked due to thermal effects during soldering. Such a problem appears more prominently as the thickness of the solar cell becomes thinner.
  • a method has been proposed in which a wiring material and a solar cell are bonded using a resin adhesive (hereinafter simply referred to as “adhesive”) instead of solder (see, for example, Patent Document 1).
  • a solar cell module for a solar cell having electrodes on the light receiving surface and the back surface, an adhesive is applied on the light receiving surface and the back surface, and a wiring material is disposed on the adhesive.
  • An adhesive coating system for a solar cell module is an adhesive coating system for a solar cell module that applies an adhesive for bonding a wiring material on a light receiving surface and a back surface of a solar cell, the light receiving surface
  • a coating device that applies adhesive on the top and back surfaces, a reversing device that reverses the solar cell, and a control device are provided, and the control device controls the operation of the coating device and the reversing device to adhere to the light receiving surface.
  • the solar cell After applying the agent, the solar cell is inverted and the back surface is directed upward. After the adhesive is applied on the back surface, the solar cell is inverted again and the light receiving surface is directed upward.
  • the present invention it is possible to improve the performance of the solar cell module such as photoelectric conversion characteristics and appearance by optimizing the application method of the adhesive.
  • FIG. 1 It is sectional drawing of the solar cell module which is an example of embodiment of this invention. It is the figure (front view) which looked at the solar cell which comprises the solar cell module of FIG. 1 from the light-receiving surface side. It is the figure (back view) which looked at the solar cell which comprises the solar cell module of FIG. 1 from the back surface side. It is a figure for demonstrating the manufacturing process of the solar cell module which is an example of embodiment of this invention, and the adhesive agent coating system for solar cell modules. It is a figure which shows an example of the coating device of FIG. It is a figure for demonstrating the manufacturing process of the solar cell module which is an example of embodiment of this invention. It is a figure which shows the modification of the manufacturing process of FIG. 3, and an adhesive agent coating system. It is a figure which shows the other modification of the manufacturing process of FIG. 3, and an adhesive agent coating system. It is a figure which shows the reference example of the manufacturing process of a solar cell module, and an adhesive agent coating system.
  • the “light-receiving surface” means a surface on which sunlight mainly enters from the outside of the solar cell.
  • the “back surface” means a surface opposite to the light receiving surface. More specifically, over 50% to 100% of sunlight incident on the solar cell is incident from the light receiving surface side.
  • “Upward” means vertically upward unless otherwise specified.
  • “substantially **” is intended to include “substantially the same” as an example and includes what is recognized as substantially the same as the same.
  • FIG. 1 is a cross-sectional view of a solar cell module 10 which is an example of an embodiment of the present invention.
  • 2A and 2B are views of the solar cell 11 constituting the solar cell module 10 as viewed from the light-receiving surface side and the back surface side (the wiring member 15 is indicated by a one-dot chain line).
  • the solar cell module 10 to be described is an example of a product manufactured by a manufacturing method described later.
  • the solar cell module 10 includes a plurality of solar cells 11, a first protective member 12 disposed on the light receiving surface side of the solar cell 11, and a first surface disposed on the back surface side of the solar cell 11. 2 protection members 13.
  • the plurality of solar cells 11 are sandwiched between protective members 12 and 13 and sealed with a filler 14 such as an ethylene vinyl acetate copolymer (EVA).
  • EVA ethylene vinyl acetate copolymer
  • a translucent member such as a glass substrate, a resin substrate, or a resin film can be used.
  • a member that does not have translucency may be used as the protective member 13.
  • the solar cell module 10 further includes a wiring member 15 that electrically connects the solar cells 11 to each other, a frame, a terminal box, and the like (not shown).
  • the solar cell 11 includes a photoelectric conversion unit 20 that generates carriers by receiving sunlight.
  • the photoelectric conversion unit 20 includes, for example, a semiconductor substrate such as crystalline silicon (c-Si), gallium arsenide (GaAs), or indium phosphide (InP), and an amorphous semiconductor layer formed on the substrate.
  • the photoelectric conversion unit 20 preferably includes transparent conductive layers 21a and 21b formed on the amorphous semiconductor layer.
  • an i-type amorphous silicon layer, a p-type amorphous silicon layer, and a transparent conductive layer 21a are sequentially formed on a light-receiving surface of an n-type single crystal silicon substrate, and an i-type amorphous is formed on the back surface.
  • a structure in which a silicon layer, an n-type amorphous silicon layer, and a transparent conductive layer 21b are sequentially formed can be given.
  • the transparent conductive layers 21a and 21b are composed of a transparent conductive oxide obtained by doping tin (Sn), antimony (Sb), or the like with a metal oxide such as indium oxide (In 2 O 3 ) or zinc oxide (ZnO). It is preferable.
  • finger electrodes 22a and bus bar electrodes 23a as light receiving surface electrodes and finger electrodes 22b and bus bar electrodes 23b as back surface electrodes on the photoelectric conversion unit 20, respectively.
  • the finger electrodes 22a and 22b are thin line electrodes formed over a wide range on the transparent conductive layers 21a and 21b, respectively.
  • the bus bar electrodes 23a and 23b are electrodes that collect carriers from the finger electrodes 22a and 22b, respectively. When the bus bar electrodes 23a and 23b are provided, the wiring member 15 is attached on the electrodes.
  • the three bus bar electrodes 23a are arranged substantially in parallel with each other with a predetermined interval, and a large number of finger electrodes 22a are arranged substantially orthogonal to the three bus bar electrodes 23a. All the electrodes are formed in a straight line.
  • the back electrode has the same electrode arrangement as the light receiving surface electrode, the back surface electrode can be formed in a larger area than the light receiving surface electrode because the back surface is less affected by light shielding loss on the photoelectric conversion characteristics than the light receiving surface.
  • the back electrode has, for example, an electrode area about 2 to 6 times that of the light receiving surface electrode, and the number of finger electrodes 22b can be increased from the number of finger electrodes 22a. That is, it can be said that the “light receiving surface” is a surface having a smaller electrode area, and the “back surface” is a surface having a larger electrode area.
  • the electrode has, for example, a structure in which a conductive filler such as silver (Ag) is dispersed in a binder resin.
  • the electrode having the structure can be formed by screen printing in the same manner as the adhesive 17 described later.
  • a metal layer such as Ag may be formed over substantially the entire area on the transparent conductive layer 21b to form the back electrode.
  • the wiring member 15 is an elongated member that connects the solar cells 11 arranged adjacent to each other. One end side of the wiring member 15 is attached to the bus bar electrode 23a of one solar cell 11 among the solar cells 11 arranged adjacent to each other. The other end side of the wiring member 15 is attached to the bus bar electrode 23 b of the other solar cell 11. That is, the wiring member 15 bends in the thickness direction of the solar cell module 10 between the adjacent solar cells 11 and connects the solar cells 11 in series.
  • the wiring member 15 has one surface substantially flat and the other surface has irregularities 16 (see FIG. 5).
  • the wiring member 15 is arranged so that the unevenness 16 faces the protective member 12 side. That is, the flat surface of the wiring member 15 is bonded onto the light receiving surface, and the surface with the irregularities 16 is bonded onto the back surface. With this arrangement, the light diffused by the unevenness 16 is reflected again to the solar cell 11 side by the protective member 12, and the light receiving efficiency of the solar cell 11 can be increased.
  • the wiring member 15 is bonded to the bus bar electrodes 23a and 23b using an adhesive 17, respectively.
  • the elongated wiring member 15 is arranged along the longitudinal direction of the bus bar electrodes 23a, 23b and with the centers in the width direction being substantially coincident with each other. Since the wiring member 15 is required to have a strength that is not cut at the time of manufacture or use, for example, the width of the wiring member 15 is set wider than the width of the bus bar electrodes 23a and 23b. For this reason, the wiring material 15 is attached in the state which protruded from the width direction both sides of bus-bar electrode 23a, 23b.
  • thermoplastic adhesive a thermosetting adhesive
  • room temperature curing adhesive moisture curing type, two-component curing type
  • energy ray curing adhesive ultraviolet curing type
  • thermosetting adhesives include urea-based adhesives, resorcinol-based adhesives, melamine-based adhesives, phenol-based adhesives, epoxy-based adhesives, polyurethane-based adhesives, polyester-based adhesives, polyimide-based adhesives, An acrylic adhesive etc.
  • the adhesive 17 may contain a conductive filler such as Ag particles, but is preferably a non-conductive thermosetting adhesive that does not contain a conductive filler from the viewpoint of manufacturing cost, light-shielding loss reduction, and the like. is there.
  • the adhesive 17 before curing (hereinafter, the adhesive before curing is referred to as “adhesive 47”) is liquid.
  • “Liquid” is a state having fluidity at room temperature (25 ° C.) and includes a state called a paste or gel.
  • the viscosity of the adhesive 47 is about 1 Pa ⁇ s to 100 Pa ⁇ s, preferably about 5 Pa ⁇ s to 50 Pa ⁇ s, more preferably about 30 Pa ⁇ s to 50 Pa ⁇ s.
  • the production method described later is particularly suitable when the viscosity of the adhesive 47 is high, for example.
  • the adhesive 17 exists only between the wiring member 15 and the light receiving surface and between the wiring member 15 and the back surface, respectively. That is, it is preferable that the adhesive 17 does not protrude from between the wiring member 15 and the light receiving surface and the back surface, and does not have a so-called fillet in which the adhesive adheres to the side surface of the wiring member 15.
  • the wiring member 15 does not have to be firmly bonded to the solar cell 11 and is preferably bonded gently to the extent that it does not peel off during manufacturing or use from the viewpoint of stress relaxation.
  • the “stress” to be relaxed is mainly a shear stress generated at the interface between the wiring material 15 and the solar cell 11 due to a volume change (expansion / shrinkage due to a temperature change) of the filler 14.
  • FIG. 3 is a diagram showing a process of applying the adhesive 47 in the manufacturing process of the solar cell module 10 and the coating system 30 (11a is attached to the light receiving surface of the solar cell 11 and 11b is attached to the back surface thereof. ).
  • FIG. 4 is a view showing an example of the coating device 33b.
  • FIG. 4A is a cross-sectional view of the screen plate 42 and the like cut along the longitudinal direction of the bus bar electrodes 23a and 23b, and FIG. It is sectional drawing which cut
  • FIG. 5 is a diagram illustrating a process of bonding the wiring member 15.
  • the solar cell module 10 can be manufactured by a manufacturing line including a coating system 30.
  • the coating system 30 is a system that constitutes a part of the production line of the solar cell module 10, and applies an adhesive 47 for bonding the wiring material 15 on the light receiving surface and the back surface of the solar cell 11.
  • the wiring material 15 is attached to the solar cell 11 to which the adhesive 47 is applied by the coating system 30, and a string (see FIGS. 1 and 5) in which the plurality of solar cells 11 are connected by the wiring material 15 is produced. And the said string is conveyed by the laminating apparatus (not shown), for example, and the solar cell module 10 is manufactured through the below-mentioned laminating process.
  • the coating system 30 preferably includes a coating reversing unit 31 and a control device 32. Furthermore, the coating system 30 preferably includes an alignment adjustment unit 35 and an inspection unit 36.
  • the coating reversing unit 31 includes, for example, a coating device 33a that coats the adhesive 47 on the light receiving surface of the solar cell 11, a coating device 33b that coats the adhesive 47 on the back surface, and a reversing device 34 that reverses the solar cell 11. Including. It is preferable that the control device 32 controls the operation of the entire system including the alignment adjusting unit 35 and the inspection unit 36 while controlling the operation of the coating reversing unit 31.
  • the coating reversing unit 31 is a compact unit in which two coating devices 33a and 33b and a reversing device 34 are arranged close to each other.
  • a reversing device 34 is provided between the two coating devices 33a and 33b.
  • the adhesive 47 can be rapidly applied to both surfaces of the solar cell 11. Further, by combining the coating devices 33a and 33b and the reversing device 34, the coating system 30 can be downsized.
  • the coating devices 33a and 33b are provided with stages 40a and 40b on which the solar cell 11 is placed, respectively.
  • the solar cell 11 is placed on the stages 40a and 40b with the surface to which the adhesive 47 is applied facing upward.
  • the solar cell 11 placed on the stage 40a has the light receiving surface facing upward, and the back surface of the solar cell 11 placed on the stage 40b faces upward.
  • the former is referred to as “adhesive 47a” and the latter is referred to as “adhesive 47b”.
  • FIG. 4 it is preferable to use a screen printing apparatus for the coating apparatuses 33a and 33b from the viewpoint of productivity and the like.
  • FIG. 4 shows the coating device 33b, a similar device can be used for the coating device 33a.
  • the printing apparatuses 33a and 33b have different printing conditions, and the amount of adhesive 47 applied is larger on the back side than on the light receiving side (see FIG. 5).
  • a general apparatus having a screen plate 42, a squeegee 46, etc. can be applied to the screen printing apparatus.
  • the screen plate 42 has a mesh 43 that passes through the adhesive 47 and a mask material 44 provided on the mesh 43.
  • the mask material 44 is made of, for example, a photosensitive emulsion, and is provided leaving an opening 45 corresponding to the coating pattern of the adhesive 47a or the adhesive 47b.
  • the adhesive 47 is placed on the screen plate 42, and the squeegee 46 is slid on the plate, whereby the adhesive 47 is discharged from the opening 45 and the adhesive 47 is placed on the light receiving surface or the back surface. Print at the desired location.
  • the opening 45 is formed according to the shape of the bus bar electrode 23a or 23b. Specifically, the screen plate 42 is formed with three elongated openings 45 corresponding to the bus bar electrodes 23a or 23b.
  • Each opening 45 has a length in the longitudinal direction substantially the same as a length in the longitudinal direction of the bus bar electrode 23a or 23b, and a width larger than the width of the bus bar electrode 23a or 23b and narrower than the width of the wiring member 15. It is formed as follows.
  • the squeegee 46 is slid along the longitudinal direction of the bus bar electrodes 23a and 23b.
  • grooves 41b corresponding to the formation pattern of the adhesive 47a on the stage 40b so that the adhesive 47a previously applied by the coating apparatus 33a does not adhere.
  • three elongated grooves 41b are formed in the stage 40b.
  • the reversing device 34 is a device having a function of turning the solar cell 11 with the light-receiving surface facing upward and turning the back surface upward, and turning the solar cell 11 with the back surface facing upward and directing the light-receiving surface upward. If it is, it will not specifically limit.
  • a device having various reversing mechanisms such as a mechanism for reversing the solar cell 11 between two members or a mechanism for reversing the solar cell 11 using a member capable of sucking or adsorbing the solar cell 11, can be applied as appropriate.
  • a mechanism for reversing the solar cell 11 between two members or a mechanism for reversing the solar cell 11 using a member capable of sucking or adsorbing the solar cell 11, can be applied as appropriate.
  • the reversing device 34 is shown at the center of the coating reversing unit 31, but for example, a standby stage may be provided at the center of the coating reversing unit 31, and a reversing mechanism may be provided between each coating device and the standby stage. Good.
  • the alignment adjustment unit 35 preferably performs alignment (hereinafter also referred to as “alignment adjustment”) for applying the adhesive 47 to a target application position with reference to the light receiving surface side of the solar cell 11. .
  • the alignment adjusting unit 35 is provided in the vicinity of the upstream side of the coating reversing unit 31 (the starting point side of the production line).
  • the solar cell 11 used for manufacturing the solar cell module 10 is carried into the alignment adjustment unit 35 by, for example, the transport line 60.
  • the solar cell 11 since damage and contamination on the light receiving surface side more easily affect the photoelectric conversion characteristics than on the back surface side, it is preferable to transport the solar cell 11 with the light receiving surface facing upward in the transport line 60. . For this reason, the solar cell 11 is carried into the alignment adjusting unit 35 with the light receiving surface facing upward.
  • the alignment adjustment unit 35 it is preferable to perform the above alignment using a camera 37.
  • the inspection unit 36 is provided close to the downstream side (end point side of the production line) of the coating reversing unit 31 and inspects the application state of the adhesive 47a on the light receiving surface side (hereinafter also referred to as “quality inspection”). Is preferred.
  • the application state of the adhesive 47a is acquired by the camera 38, and it is determined whether or not it is applied to the target application position.
  • the inspection unit 36 also determines whether there is damage such as cracks or cracks. When the conformity determination is made, that is, when there is no damage and the adhesive 47a is applied to the target position (it is assumed that the adhesive 47b is also applied to the target position), the solar cell 11 is conveyed to the next step. On the other hand, when there is damage or the adhesive 47a deviates from the target position, the solar cell 11 is discarded, for example.
  • control device 32 controls the operation of each component of the system in an integrated manner.
  • the control device 32 includes, for example, a storage unit 50 that stores a database, a program, and the like necessary for realizing the function.
  • the control blocks include, for example, an alignment control unit 51, a first application control unit 52, a first inversion control unit 53, a second application control unit 54, a second inversion control unit 55, and an inspection determination unit 56.
  • the functions of the control device 32 may be distributed among a plurality of hardware. Further, all of the application process of the adhesive 47 may be automatically performed by the function of the control device 32, or a part of the process may be artificially performed.
  • the control device 32 controls the operations of the coating devices 33a and 33b and the reversing device 34 to apply the adhesive 47 on the light receiving surface, and then reverses the solar cell 11 so that the back surface faces upward. After the adhesive 47 is applied thereon, the solar cell 11 is inverted again and the light receiving surface is directed upward.
  • the control is executed by the functions of the first application control unit 52, the first inversion control unit 53, the second application control unit 54, and the second inversion control unit 55. Further, the control device 32 performs alignment adjustment based on the light receiving surface side of the solar cell 11. This control is executed by the function of the alignment control unit 51. In addition, after applying the adhesive 47, a quality inspection is performed on the light receiving surface side. This control is executed by the function of the inspection determination unit 56.
  • the application system 30 performs the reversal operation twice after applying the adhesive 47 on the light receiving surface and before inspecting the application state of the adhesive 47. That is, the solar cell 11 is reversed after applying the adhesive 47 on the light receiving surface and after applying the adhesive 47 on the back surface in the coating reversing unit 31, and both the carry-in surface and the carry-out surface are the light receiving surface. It becomes.
  • the “loading surface” means a surface facing upward when the solar cell 11 is loaded into the coating reversing unit 31, and the “unloading surface” is a surface facing upward when unloading from the coating reversing unit 31. Means.
  • movement and an effect of the coating system 30 are explained in full detail with the manufacturing process mentioned later.
  • a plurality of solar cells 11 are prepared.
  • the solar cell 11 can be manufactured by a conventionally known method (detailed description of the method is omitted).
  • a plurality of solar cells 11 are supplied to the production line, and for example, before the adhesive 47 is applied, the presence or absence of damage such as cracks or cracks is inspected. Then, the solar cell 11 that has passed the inspection is transported to the alignment adjustment unit 35 by the transport line 60.
  • the solar cell 11 is preferably transported with the light receiving surface facing upward, it is carried into the alignment adjustment unit 35 with the light receiving surface facing upward. Further, the application state of the adhesive 47 is required to have high accuracy particularly on the light receiving surface side. For example, if the application position of the adhesive 47 deviates from the target position, the light-shielding loss increases and the appearance may deteriorate, but this influence is greater on the light receiving surface side. Therefore, alignment adjustment is performed with the light receiving surface side as a reference.
  • the alignment adjustment unit 35 performs alignment for applying the adhesive 47 to a target application position using the camera 37 that photographs the solar cell 11 from above, with the light receiving surface side of the solar cell 11 as a reference.
  • the alignment is executed by the function of the alignment control unit 51.
  • the solar cell 11 in which the alignment is completed is carried into the coating reversing unit 31 with the light receiving surface as the carry-in surface.
  • the solar cell 11 in which the alignment is completed is transported to the coating device 33a.
  • the solar cell 11 is transported with its light receiving surface facing upward without being inverted.
  • the adhesive 47 is applied first from the light receiving surface side.
  • the adhesive 47 is applied on the electrode along the longitudinal direction of the bus bar electrode 23a. Preferably, it is applied a little wider than the width of the bus bar electrode 23a.
  • the application of the adhesive 47 on the light receiving surface is performed after the alignment is completed without being affected by the position accuracy due to the reversing operation or the like. For this reason, it becomes possible to apply the adhesive 47 to the light receiving surface with high accuracy.
  • the solar cell 11 is disposed on the stage 40 a with the light receiving surface facing upward, and the adhesive 47 is applied by the function of the first coating control unit 52.
  • the solar cell 11 with the adhesive 47 applied on the light receiving surface is conveyed to the reversing device 34.
  • the solar cell 11 with the adhesive 47 applied on the light receiving surface is reversed and the back surface is directed upward. That is, the light receiving surface coated with the adhesive 47 is directed downward (on the stage side of the reversing device 34). Since the adhesive 47a is in an uncured state, it is necessary to invert the solar cell 11 so that the adhesive 47a does not adhere to the stage and does not flow. As a measure against the former, there is a method of providing an adhesion preventing structure similar to the groove 41b on the stage.
  • the stage is provided with a cooling means, for example, means for blowing air to the solar cell 11, a cooler, etc. And a method for increasing the viscosity of the agent 47.
  • the first inversion operation is executed by the function of the first inversion control unit 53.
  • the reversing method is not particularly limited as long as it has a small influence on the adhesive 47a and the positional accuracy, and is appropriately selected according to the device space or the like (the same applies to the second reversing).
  • the solar cell 11 in which the first reversing operation is completed is conveyed to the coating device 33b.
  • an adhesive 47 is applied on the back surface directed upward by the above reversal operation.
  • the adhesive 47 is applied on the electrode along the longitudinal direction of the bus bar electrode 23b. Preferably, it is applied a little wider than the width of the bus bar electrode 23b. It is preferable that the amount of the adhesive 47 applied is larger on the back surface side than on the light receiving surface side (that is, adhesive 47a ⁇ adhesive 47b). In particular, when the wiring member 15 having the unevenness 16 is used, it is preferable that the coating amount is adhesive 47a ⁇ adhesive 47b in order to improve the adhesion on the back surface side.
  • the solar cell 11 is disposed on the stage 40b with the back surface facing upward, and the adhesive 47 is applied on the back surface by the function of the second coating control unit 54.
  • the stage 40b is provided with a groove 41b so that the adhesive 47a does not adhere thereto, and the solar cell 11 is arranged with the adhesive 47a aligned with the position of the groove 41b.
  • the solar cell 11 with the adhesive 47 applied on the back surface is conveyed again to the reversing device 34.
  • the coating amount is set to adhesive 47a ⁇ adhesive 47b
  • the screen plate 42 used in the coating apparatus 33b has a larger opening 45 and a thicker mask material 44.
  • the coating amount is adhesive 47a ⁇ adhesive 47b.
  • the solar cell 11 coated with the adhesive 47 on both sides is inverted again and the light receiving surface is directed upward. That is, the back surface to which the adhesive 47 is applied is directed downward (on the stage side of the reversing device 34).
  • the second reversal operation is executed by the function of the second reversal control unit 55.
  • the solar cell 11 for which the second reversing operation has been completed is unloaded from the coating reversing unit 31 and transported to the inspection unit 36.
  • the process in the coating reversing unit 31 is completed.
  • the solar cell 11 is reversed twice in the coating reversing unit 31 between the alignment adjustment and the quality inspection. Thereby, the solar cell 11 is conveyed to the test
  • the application state of the adhesive 47 is inspected by the inspection unit 36, and a series of application processes in the application system 30 is completed.
  • the inspection unit 36 performs quality inspection on the light receiving surface side where high coating accuracy is required.
  • the application state of the adhesive 47 a is acquired by the camera 38 by the function of the inspection determination unit 56, and whether it is applied to the target application position and whether there is damage such as a crack or a crack. Determine whether or not.
  • inspection is conveyed by the following process.
  • the wiring member 15 is attached to the solar cell 11 to which the adhesive 47 is applied.
  • the wiring member 15 has a flat surface bonded to the adhesive 47a and a surface having the irregularities 16 bonded to the adhesive 47b.
  • the wiring member 15 is thermocompression bonded onto the adhesive 47 and the heating temperature is set to a temperature at which the adhesive 47 is cured.
  • the wiring member 15 may be separately bonded on the light receiving surface side and the back surface side of the solar cell 11, or may be bonded simultaneously on the light receiving surface side and the back surface side. Thus, a string in which a plurality of solar cells 11 are connected by the wiring member 15 is produced.
  • the constituent members of the solar cell module 10 including the string are stacked and thermocompression bonded.
  • This process is called a laminating process.
  • a first resin film constituting the filler 14 is laminated on the protective member 12, and a string is laminated on the first resin film.
  • a second resin film constituting the filler 14 is laminated on the string, and the protective member 13 is laminated thereon. And it laminates by applying a pressure, heating at the temperature which each resin film fuse
  • the solar cell module 10 is manufactured by attaching a frame, a terminal box, and the like.
  • the method of applying the adhesive 47 can be optimized, and for example, the performance of the solar cell module 10 such as photoelectric conversion characteristics and appearance can be improved.
  • the performance of the solar cell module 10 such as photoelectric conversion characteristics and appearance can be improved.
  • alignment adjustment and quality inspection can be easily performed on the basis of the light receiving surface side that easily affects the photoelectric conversion characteristics. Can do. Thereby, it becomes possible to increase the application accuracy of the adhesive 47 to the light receiving surface.
  • the adhesive 47 on the light receiving surface in advance in a state where the influence of the position accuracy due to the reversing operation or the like is small, in order to increase the application accuracy of the adhesive 47 on the light receiving surface.
  • an adhesive having a high viscosity is used as the adhesive 47, even if the adhesive 47 is applied to the light receiving surface and then reversed, the influence of the adhesive 47a on the light receiving surface due to the reversal is very small.
  • the application amount of the adhesive 47 is adhesive 47a ⁇ adhesive 47b, it is preferable that the adhesive 47a with a small application amount is provided in advance.
  • the coating system 100 of the reference example shown in FIG. 8 has a problem in quality assurance (coating accuracy) and the like as compared with the embodiment of the present invention.
  • the coating system 100 is different from the above-described embodiment of the present invention in that the reversing operation in the coating reversing unit 101 is one time.
  • the adhesive 47 can be applied to both surfaces of the solar cell 11, but the carry-out surface from the coating inversion unit 101 is the back surface. That is, since the solar cell 11 is carried into the inspection unit 36 with the back surface facing upward, the quality inspection is performed on the back surface. That is, it is difficult to perform quality inspection on the light receiving surface side that requires high accuracy.
  • the coating system 100 since the carry-in surface and the carry-out surface are not unified, alignment adjustment and quality inspection are performed based on different surfaces. This is not preferable from the viewpoint of coating accuracy. Further, when the coating system 100 is used, the subsequent steps are performed with the light receiving surface facing downward, which is not preferable from the viewpoint of suppressing damage and contamination on the light receiving surface side.
  • the reversing operation of the solar cell 11 is performed twice in the coating reversing unit 31, thereby obtaining other methods including the above reference example. Unobtainable effects can be obtained.
  • the method of unifying the said carrying-in surface and the said carrying-out surface to a back surface is also considered, when using the solar cell 11, it will be understood from the said description that the said method is not appropriate.
  • the adhesive 47 is applied on the light receiving surface and the back surface using the two coating devices 33a and 33b.
  • the adhesive 47 may be applied by the application device 71.
  • the application reversing unit 70 shown in FIG. 6 is suitable when, for example, the adhesive 47 is applied using the same screen plate on the light receiving surface side and the back surface side.
  • the alignment adjustment part 35 is provided in the upstream of the application
  • the adhesive 47 can be applied with high accuracy at the target position.
  • the process from alignment adjustment to quality inspection can be performed at one place.
  • the coating reversing unit 80 shown in FIG. 7 the coating device and the reversing device are integrated into one. Furthermore, a camera 81 is mounted on the coating reversing unit 80, and alignment adjustment and quality inspection can be performed in this unit.

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  • Engineering & Computer Science (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Manufacturing & Machinery (AREA)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne un procédé de production de module de cellule solaire (10), lequel procédé consiste à appliquer un adhésif (47) sur une surface de réception de lumière et sur une surface arrière d'une cellule solaire (11) comportant des électrodes sur la surface de réception de lumière et sur la surface arrière, et à positionner et à fixer un matériau de câblage (15) sur l'adhésif (47). Plus particulièrement, une fois que l'adhésif (47) a été appliqué sur la surface de réception de lumière de la cellule solaire (11) positionnée de sorte que la surface de réception de lumière soit orientée vers le haut, la cellule solaire (11) est retournée de sorte que la surface arrière soit orientée vers le haut, et l'adhésif (47) est appliqué sur la surface arrière ; ensuite, avant le positionnement du matériau de câblage (15), la cellule solaire (11) est à nouveau retournée de sorte que la surface de réception de lumière soit orientée vers le haut.
PCT/JP2014/000657 2013-02-28 2014-02-07 Procédé de production de module de cellule solaire, et système d'application adhésive de module de cellule solaire WO2014132575A1 (fr)

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CN107665936A (zh) * 2017-10-27 2018-02-06 乐山新天源太阳能科技有限公司 太阳能电池丝印二合一生产线
KR20210096065A (ko) * 2020-01-23 2021-08-04 청두 예판 사이언스 앤드 테크놀로지 컴퍼니 리미티드 슁글드 모듈의 제조 방법 및 슁글드 모듈
WO2021166693A1 (fr) 2020-02-18 2021-08-26 パナソニック株式会社 Procédé de fabrication de module de cellules solaires
WO2022210100A1 (fr) 2021-03-31 2022-10-06 パナソニックＩｐマネジメント株式会社 Dispositif de fabrication de chaîne
EP4099405A1 (fr) * 2021-05-31 2022-12-07 Mondragon Assembly, S.Coop Appareil et procédé de connexion de cellules solaires
DE202023106708U1 (de) 2022-11-29 2024-02-01 Mondragon Assembly, S. Coop. Solarzellen-Verbindungsvorrichtung

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WO2012043491A1 (fr) * 2010-09-29 2012-04-05 日立化成工業株式会社 Module à cellule solaire
WO2012049984A1 (fr) * 2010-10-14 2012-04-19 日立化成工業株式会社 Module de cellules solaires
JP2012134393A (ja) * 2010-12-22 2012-07-12 Sony Chemical & Information Device Corp 太陽電池モジュールの製造方法及び太陽電池モジュール

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WO2012043491A1 (fr) * 2010-09-29 2012-04-05 日立化成工業株式会社 Module à cellule solaire
WO2012049984A1 (fr) * 2010-10-14 2012-04-19 日立化成工業株式会社 Module de cellules solaires
JP2012134393A (ja) * 2010-12-22 2012-07-12 Sony Chemical & Information Device Corp 太陽電池モジュールの製造方法及び太陽電池モジュール

Cited By (13)

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Publication number Priority date Publication date Assignee Title
CN107665936A (zh) * 2017-10-27 2018-02-06 乐山新天源太阳能科技有限公司 太阳能电池丝印二合一生产线
CN107665936B (zh) * 2017-10-27 2024-04-12 乐山新天源太阳能科技有限公司 太阳能电池丝印二合一生产线
KR102531377B1 (ko) * 2020-01-23 2023-05-11 청두 예판 사이언스 앤드 테크놀로지 컴퍼니 리미티드 슁글드 모듈의 제조 방법 및 슁글드 모듈
JP2022501839A (ja) * 2020-01-23 2022-01-06 チェンドゥ イェファン サイエンス アンド テクノロジー カンパニー，リミテッド 板葺きソーラーモジュールの製造方法及び板葺きソーラーモジュール
JP7239713B2 (ja) 2020-01-23 2023-03-14 チェンドゥ イェファン サイエンス アンド テクノロジー カンパニー，リミテッド 板葺きソーラーモジュールの製造方法及び板葺きソーラーモジュール
KR20210096065A (ko) * 2020-01-23 2021-08-04 청두 예판 사이언스 앤드 테크놀로지 컴퍼니 리미티드 슁글드 모듈의 제조 방법 및 슁글드 모듈
CN115104188A (zh) * 2020-02-18 2022-09-23 松下控股株式会社 太阳能电池组件的制造方法
WO2021166693A1 (fr) 2020-02-18 2021-08-26 パナソニック株式会社 Procédé de fabrication de module de cellules solaires
CN115104188B (zh) * 2020-02-18 2023-06-27 松下控股株式会社 太阳能电池组件的制造方法
WO2022210100A1 (fr) 2021-03-31 2022-10-06 パナソニックＩｐマネジメント株式会社 Dispositif de fabrication de chaîne
EP4099405A1 (fr) * 2021-05-31 2022-12-07 Mondragon Assembly, S.Coop Appareil et procédé de connexion de cellules solaires
WO2022253696A1 (fr) 2021-05-31 2022-12-08 Mondragon Assembly, S.Coop. Appareil et procédé de connexion de cellules solaires
DE202023106708U1 (de) 2022-11-29 2024-02-01 Mondragon Assembly, S. Coop. Solarzellen-Verbindungsvorrichtung

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