WO2012005367A1 - 太陽電池モジュールの製造方法 - Google Patents
太陽電池モジュールの製造方法 Download PDFInfo
- Publication number
- WO2012005367A1 WO2012005367A1 PCT/JP2011/065729 JP2011065729W WO2012005367A1 WO 2012005367 A1 WO2012005367 A1 WO 2012005367A1 JP 2011065729 W JP2011065729 W JP 2011065729W WO 2012005367 A1 WO2012005367 A1 WO 2012005367A1
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- WO
- WIPO (PCT)
- Prior art keywords
- solar cell
- chamber
- glass
- module
- cell module
- Prior art date
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 57
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Images
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
- H10F71/10—Manufacture or treatment of devices covered by this subclass the devices comprising amorphous semiconductor material
- H10F71/103—Manufacture or treatment of devices covered by this subclass the devices comprising amorphous semiconductor material including only Group IV materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C43/00—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor
- B29C43/02—Compression moulding, i.e. applying external pressure to flow the moulding material; Apparatus therefor of articles of definite length, i.e. discrete articles
- B29C43/10—Isostatic pressing, i.e. using non-rigid pressure-exerting members against rigid parts or dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/0007—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality
- B32B37/003—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding involving treatment or provisions in order to avoid deformation or air inclusion, e.g. to improve surface quality to avoid air inclusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
- B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
- B32B37/1009—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure using vacuum and fluid pressure
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F19/00—Integrated devices, or assemblies of multiple devices, comprising at least one photovoltaic cell covered by group H10F10/00, e.g. photovoltaic modules
- H10F19/80—Encapsulations or containers for integrated devices, or assemblies of multiple devices, having photovoltaic cells
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10F—INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- H10F71/00—Manufacture or treatment of devices covered by this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2457/00—Electrical equipment
- B32B2457/12—Photovoltaic modules
-
- 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 module.
- Solar cell elements are often manufactured using a single crystal silicon substrate or a polycrystalline silicon substrate.
- the configuration of a solar cell module including a solar cell element is generally such that an encapsulant mainly composed of ethylene / vinyl acetate copolymer (EVA) is provided between the light-transmitting substrate and the back surface protective material.
- EVA ethylene / vinyl acetate copolymer
- the solar cell element is sealed with this sealing material.
- FIG. 7 is a schematic sectional view showing an example of a double vacuum chamber type laminator.
- a double vacuum chamber type laminator shown in FIG. 7 includes a diaphragm (hereinafter sometimes referred to as a “flexible member”) 101 (for example, a diaphragm made of silicon rubber) and an upper chamber partitioned by the diaphragm 101.
- a diaphragm hereinafter sometimes referred to as a “flexible member” 101 (for example, a diaphragm made of silicon rubber) and an upper chamber partitioned by the diaphragm 101.
- first chamber (Hereinafter, may be expressed as “first chamber”) 102 and lower chamber (hereinafter, may be expressed as “second chamber”) 104, and mounting board 103 provided in lower chamber 104. It is equipped with.
- a heater 133 is built in the mounting board 103.
- the module stack 207 to be subjected to the thermocompression processing is placed on the placement board 103.
- FIG. 8 is a schematic sectional view showing a module laminate 207 which is an example of a conventional module laminate.
- the module laminate 207 has a configuration in which a light-transmitting substrate 221, a sealing material 222, a solar cell element 223, a sealing material 224, and a back surface protective material 225 are stacked in this order.
- the translucent substrate 221, the sealing material 222, the sealing material 224, and the back surface protective material 225 are arranged so that the outer peripheries of these members overlap when viewed from the normal direction of these members (here Each member has the same shape and size as viewed from the normal direction).
- the module laminate 207 is formed by superimposing the translucent substrate 221, the sealing material 222, the solar cell element 223, the sealing material 224, and the back surface protective material 225 in this order.
- the lower chamber 104 is opened, and the module stack 207 is placed on the placement board 103 so that the translucent substrate 221 is on the placement board 103 side and the back surface protective material 225 is on the diaphragm 101 side. . Thereafter, the lower chamber 104 is closed.
- the upper chamber 102 is depressurized in vacuum. (3) Stop the vacuum reduction of the upper chamber 102 and simultaneously reduce the vacuum of the lower chamber 104. (4) By heating the mounting board 103 with the heater 133, the sealing materials 224 and 222 are heated.
- the sealing materials 224 and 222 are heated until the temperature of the resin constituting the sealing materials 224 and 222 is softened or melted.
- the upper chamber 102 is returned to the atmospheric pressure while the lower chamber 104 is evacuated and the pressure difference between the lower chamber 104 and the upper chamber 102 is utilized to mount the module stack 207 with the diaphragm 101.
- the module laminate 207 is thermocompression-bonded by pressing toward 103.
- the resin constituting the sealing materials 224 and 222 is a resin that requires a crosslinking reaction (for example, ethylene vinyl acetate copolymer (EVA))
- EVA ethylene vinyl acetate copolymer
- the materials 224, 222 are heated and maintained at that temperature until crosslinking is complete. (7) After sufficient pressure bonding time has elapsed, the lower chamber 104 is returned to atmospheric pressure. Thereafter, the lower chamber 104 is opened, and the solar cell module obtained by integrating the module stack 207 is taken out.
- bubbles may be generated in the manufactured solar cell module.
- the generation of bubbles is not preferable because it causes delamination, rainwater intrusion, and insulation failure.
- Bubbles are insufficient exhaust (deaeration) of air existing between the members to be bonded, insufficient exhaust (deaeration) of air entrained in the sealing material to be melted, and volatile components contained in the material constituting each member This can be caused by various causes, such as lack of exhaust (degassing).
- a method for preventing a foaming phenomenon caused by rapid decomposition of a crosslinking agent contained in a sealing material is known (see, for example, Japanese Patent No. 4401649). Further, a method is known in which heating is started after pre-pressurization and then heat-compression bonding (see, for example, JP-A-2003-282920). Further, there is known a method in which a laminate is left in a vacuum state for a short time before heating and then heat-pressed (see, for example, Japanese Patent No. 2915327). Further, a double vacuum chamber type laminator using induction heating is known (see, for example, Japanese Patent Application Laid-Open No. 2010-23485).
- the pressure in the sealing treatment container is set to 0.05 MPa as a manufacturing method of a solar cell module with good appearance that can suppress bubble remaining, movement of the solar battery cell, or squeezing out from the end face of the sealing resin.
- the manufacturing method of the solar cell module which adjusts above and below atmospheric pressure is known (for example, refer patent 3875715 gazette and international publication 2004/038811 pamphlet).
- a module laminate configured such that the outer periphery of each member overlaps is often used like the module laminate 207 illustrated in FIG. 8.
- the thermocompression treatment After the thermocompression treatment, the melted sealing material protrudes from the outer periphery of the translucent substrate and the back surface protective material. Therefore, conventionally, after the thermocompression treatment, the sealing material protruding from the outer periphery of the translucent substrate and the back surface protective material has been removed. This operation of removing the sealing material is called trimming.
- a sealing material smaller than the light-transmitting substrate and the back surface protective material is used. It is also performed to have a structure that is arranged inside the outer periphery. This prevents squeezing out of the sealing material due to the thermocompression treatment.
- the structure of the module laminate is referred to as “the structure in which the outer periphery of the sealing material is disposed inside the outer periphery of the translucent substrate and the back surface protective material”, and a conventional solar cell module
- the module laminate was subjected to thermocompression bonding using the above manufacturing method, it was revealed that the shape of the sealing material was easily deformed by thermocompression treatment.
- the present invention has been made in view of the above situation. Under the circumstances described above, when manufacturing a solar cell module, there is a need for a method for manufacturing a solar cell module in which the generation of bubbles in the corner portion is suppressed and the deformation of the sealing material due to the thermocompression treatment is suppressed.
- ⁇ 2> The method for producing a solar cell module according to ⁇ 1>, wherein the translucent member has a flexural modulus of 1 GPa or more.
- ⁇ 3> The method for producing a solar cell module according to ⁇ 1> or ⁇ 2>, wherein the translucent member is a glass member.
- ⁇ 4> The method for producing a solar cell module according to any one of ⁇ 1> to ⁇ 3>, wherein the sealing material includes an ionomer of an ethylene / unsaturated carboxylic acid copolymer.
- the module laminate includes a sealing material and a glass member in this order on the amorphous solar cell element of the translucent member on which the amorphous silicon solar cell element is formed.
- the module laminate is a sealing material containing an ionomer of an ethylene / unsaturated carboxylic acid copolymer on the amorphous silicon solar cell element of the translucent member on which the amorphous silicon solar cell element is formed.
- ⁇ 7> The method for producing a solar cell module according to any one of ⁇ 1> to ⁇ 6>, wherein the glass member has a thickness of 4 mm or less.
- ⁇ 8> The solar cell according to any one of ⁇ 1> to ⁇ 7>, wherein a distance between the outer periphery of the sealing material and the outer periphery of the glass member and the translucent member is 1.5 mm to 25 mm. Module manufacturing method.
- ADVANTAGE OF THE INVENTION when manufacturing a solar cell module, providing the manufacturing method of the solar cell module by which generation
- the manufacturing method of the solar cell module of the present invention includes a flexible member, a first chamber and a second chamber partitioned by the flexible member, and a mounting board provided in the second chamber and having heating means.
- the at least one glass member, sealing material, solar cell element, and translucent member in this order on the mounting plate of the double vacuum chamber type laminator provided with the outer periphery of the sealing material A first step of placing the module laminate located inside the outer periphery of the glass member and the translucent member such that the glass member is on the flexible member side; and in the first chamber and After the second step of reducing the pressure in the second chamber and after the second step, the pressure in the first chamber is increased to 0.005 to 0.090 MPa (gauge pressure -0.096 to -0.011 MPa).
- Let bend deformation A third step of obtaining a solar cell module by pressing and pressing the module laminate against the mounting table heated by the flexible member to integrate the module laminate by thermocompression. .
- the present invention is not limited for the following reasons.
- a double vacuum chamber type laminator is used, and a module laminate having a back surface protective material, a sealing material, a solar cell element, a sealing material, and a translucent substrate in this order is provided as a diaphragm.
- the upper chamber was raised to atmospheric pressure (0.101 MPa; that is, the gauge pressure was 0 MPa).
- the gauge pressure was 0 MPa.
- the glass member has high rigidity (flexural modulus), and the pressure bonding force (pressing) is too strong. This causes the following problems.
- the glass member may be repelled from the state of being pressed by the diaphragm and bent.
- the repulsive force to return to the shape of the work strongly. That is, a large stress change occurs in the glass member due to the pressing by the diaphragm and the release from the pressing. Due to the stress change at this time, bubbles tend to be generated particularly at the corner portion of the glass member where the stress change is concentrated.
- This phenomenon occurs when a glass member is included as one member of the module laminate (solar cell module), and when the glass laminate is not included in the module laminate (solar cell module) (for example, a glass member) This is a unique phenomenon that does not occur when a plastic film is used instead.
- the pressure in the first chamber is raised to 0.090 MPa or lower, which is lower than atmospheric pressure.
- the pressure difference between the first chamber and the second chamber is reduced as compared with the conventional method in which the pressure in the first chamber is increased to atmospheric pressure.
- the pressure applied to the glass member is reduced, and the pressure applied to the glass member is also reduced.
- the repulsive force generated in the glass member when the second chamber is opened to the atmospheric pressure and the module laminate is taken out, and the stress change caused by the pressing by the diaphragm and the releasing from the pressing It can be made smaller than the conventional manufacturing method. Therefore, according to the manufacturing method of the solar cell module of this invention, generation
- the said conventional manufacturing method has at least a glass member, a sealing material, a solar cell element, and a translucent member in this order, and the outer periphery of the said sealing material is the said glass member and the said translucent member.
- a solar cell module is obtained by integrating a module laminate (for example, see FIGS. 2, 3, and 5 described later) located inside the outer periphery of the glass member, the glass member has high rigidity (flexural modulus).
- the sealing material may be deformed by the thermocompression treatment due to the holding and the pressing (crimping force) being too strong, which may cause a problem in appearance.
- the thermocompression treatment may change the shape of the sealing material into a shape with rounded corners or a shape with the center of each side inward (for example, described later). (See FIG. 6).
- This phenomenon also occurs when a glass member is included as one member of the module laminate (solar cell module), and when the glass laminate is not included in the module laminate (solar cell module) (for example, a glass member)
- the pressure in the first chamber is raised to 0.090 MPa or lower, which is lower than the atmospheric pressure.
- the applied crimping force can be reduced, and the deformation of the sealing material due to the thermocompression treatment can be suppressed.
- the pressure in the first chamber is increased to 0.005 MPa or more, so that a sufficient pressure-bonding force to the module stack can be secured. Since the crimping force obtained in the third step is a crimping force sufficient to exhaust the gas in the module stack, the generation of bubbles due to insufficient degassing in the module stack can be suppressed. As a result, according to the method for manufacturing the solar cell module of the present invention, it is possible to prevent the generation of bubbles over the entire surface of the solar cell module including the corner portion.
- the solar cell module can be manufactured while suppressing the generation of bubbles in the corner portion and suppressing the deformation of the sealing material due to the thermocompression treatment. It is done.
- FIG. 1 is a schematic cross-sectional view showing an embodiment of a double vacuum chamber type laminator suitably used in the method for producing a solar cell module of the present invention.
- the double vacuum chamber type laminator in the present embodiment includes a diaphragm 101 as a flexible member, an upper chamber 102 as a first chamber, and a lower chamber 104 as a second chamber, It has.
- the upper chamber 102 and the lower chamber 104 are partitioned by a diaphragm 101. That is, the inner space of the upper chamber 102 is formed by the inner wall of the upper chamber 102 and the diaphragm 101, and the inner space of the lower chamber 104 is formed by the inner wall of the lower chamber 104 and the diaphragm 101.
- the lower chamber 104 is configured to be openable and closable (FIG. 1 shows a state in which the lower chamber 104 is opened).
- the module stack 107 is taken in and out when the lower chamber 104 is open (for example, the operation of the first step is performed), and the inside of the upper chamber 102 is closed when the lower chamber 104 is closed.
- the pressure is changed (for example, the operation in the third step is performed).
- each of the upper chamber 102 and the lower chamber 104 has a vent, and the pressure in the chamber can be increased or decreased by intake or exhaust through the vent.
- the inside of the chamber is exhausted through the vent by an unillustrated exhaust means (for example, a vacuum pump).
- an unillustrated exhaust means for example, a vacuum pump
- air, nitrogen, or the like is supplied into the chamber through the vent by a gas supply unit (not shown).
- the upper chamber 102 and the lower chamber 104 are not limited to the form shown in FIG. 1, and may be configured to have an intake port and an exhaust port separately.
- the diaphragm 101 is a flexible member that bends and deforms according to the pressure difference between the upper chamber 102 and the lower chamber 104, and is made of, for example, silicon rubber.
- the module stack 107 is pressed toward the mounting board 103 by the diaphragm 101 that has been bent and deformed.
- a mounting board 103 is provided in the lower chamber 104.
- the surface of the mounting board 103 faces the diaphragm 101.
- the module laminated body 107 is mounted on the mounting board 103.
- the mounting board 103 incorporates a heater 133 (heating means) for heating the module laminate 107.
- a gap (clearance) is generated between the module laminated body 107 and the diaphragm 101. It is configured as follows. This gap, that is, the distance between the module laminate 107 and the diaphragm 101 is usually 5 mm to 200 mm, preferably 10 mm to 100 mm.
- the module laminated body (for example, module laminated body 107) in this invention has at least a glass member, a sealing material, a solar cell element, and a translucent member in this order, and the outer periphery of the sealing material is made of the glass. It has the structure located inside the outer periphery of a member and the said translucent member (for example, refer FIG.2, FIG.3 and FIG.5 mentioned later). That is, the size of the sealing material is smaller than the sizes of the glass member and the translucent member.
- the size and shape of the glass member and the translucent member are not particularly limited. Examples of the glass member and the translucent member include a quadrilateral (square or rectangular) having a side of 200 mm to 3000 mm. A member can be used.
- the sealing material there is no particular limitation on the size and shape of the sealing material, but as the sealing material, one side is 3 mm to 50 mm (more preferably 4 to 25 mm) than one side of the glass member and the translucent member. ) Short, square (square or rectangular) members can be used.
- the “size” and “shape” are the size and shape as viewed from the normal direction (hereinafter the same).
- the distance between the outer periphery of the sealing material and the outer periphery of the glass member and the translucent member is preferably 1.5 mm to 25 mm, and more preferably 2 to 12.5 mm.
- the sealing is performed from the outer periphery of the glass member and the translucent member by thermocompression treatment. It is possible to suppress the phenomenon that the stopping material protrudes. For this reason, in the conventional manufacturing method of a solar cell module, the process (trimming process) which removes the protruding sealing material which was indispensable as the process after the thermocompression bonding process becomes unnecessary.
- the process which removes the protruding sealing material which was indispensable as the process after the thermocompression bonding process becomes unnecessary.
- FIG. 2 is a schematic cross-sectional view showing a module laminated body 107 ⁇ / b> A that is an example of the module laminated body 107.
- the module laminate 107 ⁇ / b> A has a configuration in which a back surface protective material 25 ⁇ / b> A that is a glass member, a sealing material 24 ⁇ / b> A, a solar cell element 23 ⁇ / b> A, a sealing material 22 ⁇ / b> A, and a translucent material that is a translucent member.
- the substrate 21A is laminated in this order, and the outer periphery of the two sealing materials 22A and 24A is positioned inside the outer periphery of the back surface protective material 25A and the translucent substrate 21A.
- There are a plurality of solar cell elements 23A and each of the solar cell elements 23A is connected by a conducting wire (also called an interconnector).
- the “translucent substrate” refers to a member of a solar cell module (module stack), which is disposed on the light receiving surface side (the side on which sunlight is incident).
- the “back surface protective material” is a member of a solar cell module (module stack), and is disposed on the opposite side of the light receiving surface side (the opposite surface is referred to as “back surface”). This refers to a member for protecting the member (solar cell element, sealing material, etc.).
- FIG. 3 is a schematic cross-sectional view showing a module laminate 107B which is another example of the module laminate 107.
- the configuration of the module laminate 107B is such that the back surface protective material 25B that is a glass member, the sealing material 24B, the solar cell element 23B, and the translucent substrate 21B that is a translucent member are in this order.
- the outer periphery of the sealing material 24B is positioned inside the outer periphery of the back surface protective material 25B and the translucent substrate 21B.
- the form of the module laminate 107B may be a form in which the translucent substrate 21B and the solar cell element 23B are separate and independent members, or the translucent substrate 21B and the solar cell element 23B are integrated members.
- a form is mentioned.
- a solar cell module manufacturing method using the laminator shown in FIG. 1 will be described as an embodiment of the solar cell module manufacturing method of the present invention.
- the manufacturing method of the solar cell module of the present invention is not limited to the following embodiment.
- the inside of the upper chamber 102 and the lower chamber 104 is depressurized as an operation of the second step.
- the upper chamber 102 and the lower chamber 104 may be depressurized at the same time, or the upper chamber 102 is depressurized before the depressurization in the lower chamber 104 and the diaphragm 101 is sucked to the upper chamber 102 side. It may be left.
- Each of the pressures in the upper chamber 102 and the lower chamber 104 is reduced by using a vacuum pump (not shown) in a state in which the inside of the chamber is close to vacuum (for example, less than 0.005 MPa, preferably 0.004 MPa or less, more preferably 0.0001 to By evacuating to 0.004 MPa).
- the module stack 107 is heated by heating the mounting board 103 by the heater 133 using the time until the pressure in the upper chamber 102 and the lower chamber 104 reaches the target pressure.
- the heating temperature at this time is preferably 100 ° C. to 200 ° C., more preferably 120 ° C. to 180 ° C., although it depends on the type of the sealing material. Due to the reduced pressure (exhaust) in the second step, the gas component (air, etc.) taken in between the members constituting the module laminate 107 and the gas component (air) taken into the material constituting each member Etc.) are discharged.
- the module laminate 107 is heated to a temperature at which a crosslinking reaction occurs, The temperature is maintained until the reaction is complete.
- the pressure in the upper chamber 102 is raised to 0.005 MPa to 0.090 MPa (gauge pressure -0.096 to -0.011 MPa). Specifically, for example, while the exhaust in the lower chamber 104 is continued, the exhaust in the upper chamber 102 is stopped, and air or nitrogen is introduced into the upper chamber 102 so that the pressure in the upper chamber 102 becomes the above value. Etc. By increasing the pressure in the upper chamber 102 to the above value, a pressure difference is generated between the upper chamber 102 and the lower chamber 104, and the diaphragm 101 moves toward the lower chamber 104 on the low pressure side. Deforms and deforms.
- the module laminate 107 is pressed against the mounting board 103 by the diaphragm 101 that has been bent and deformed.
- the module laminated body 107 is thermocompression bonded by the pressure-bonding force generated by this pressing and the temperature of the heated mounting board 103.
- dissolves the module laminated body 107 is integrated, and a solar cell module is obtained.
- the pressure in the upper chamber 102 in the third step is preferably 0.005 MPa to 0.080 MPa from the viewpoint of further suppressing the deformation of the sealing material.
- the time for the thermocompression treatment is preferably 1 to 8 minutes, more preferably 2 to 6 minutes.
- the manufacturing method of the solar cell module in the present embodiment may have other steps other than the first to third steps as necessary.
- the pressure in the lower chamber 104 is returned to atmospheric pressure, and the solar cell module is taken out from the lower chamber 104.
- heating by the heater 133 is stopped, the upper chamber 102 and the lower chamber 104 are returned to atmospheric pressure, the closed lower chamber 104 is opened, and the solar cell module is taken out from the lower chamber 104. Thereafter, the solar cell module is cooled.
- Glass member Although it does not specifically limit as said glass member, Usually, the glass sheet or glass plate currently used for the solar cell module can be used.
- a glass member having a surface compressive stress of 20 MPa or more is preferable from the viewpoint of durability against thermal cracking due to temperature rise due to sunshine over a wide area and durability against flying objects.
- the surface compressive stress of the glass member is a value measured according to JIS R3222.
- Specific examples of the glass member having a surface compressive stress of 20 MPa or more include double strength glass, tempered glass, and ultra tempered glass.
- the double strength glass usually has a surface compressive stress of 20 to 60 MPa
- the tempered glass usually has a surface compressive stress of 90 to 130 MPa
- the super strengthened glass has a surface compressive stress of usually 180 to 250 MPa. It is.
- Double-strength glass has a feature that it is easy to manufacture a glass with relatively little warpage, and when broken, it becomes a fine piece and does not fall.
- glass As a material of a glass member, for example, soda lime glass is used suitably.
- heat reflecting glass, heat absorbing glass and the like can also be used.
- glass having a low content of iron for example, non-iron (iron free) tempered glass
- glass having a relatively high content of iron may be used.
- Tempered glass with a low iron content is also called high transmittance glass or white sheet glass.
- Glass having a relatively high iron content is also called blue sheet glass or float glass.
- the thickness of the glass member is not particularly limited, but is usually 20 mm or less. From the viewpoint of reducing the thickness and weight of the entire solar cell module, the thickness of the glass member is preferably 4 mm or less, more preferably 3 mm or less, and even more preferably 2.5 mm or less.
- the solar cell module of the present invention is configured to have a glass member, a sealing material, a solar cell element, and a translucent substrate in this order as a back surface protective material, the solar cell module is usually formed by a translucent substrate. The strength of is maintained.
- the thickness of the glass member as the back surface protective material is smaller than the thickness of the light-transmitting substrate from the viewpoint of reducing the thickness and weight of the entire solar cell module.
- the thickness of the glass member as the back surface protective material is smaller than the thickness of the light-transmitting substrate from the viewpoint of reducing the thickness and weight of the entire solar cell module.
- the solar cell element examples include conventionally known crystalline silicon solar cell elements, polycrystalline silicon solar cell elements, amorphous silicon solar cell elements, copper indium selenide solar cell elements, compound semiconductor solar cell elements, and organic dye solar cell elements.
- a solar cell element can be selected according to the purpose.
- the amorphous silicon solar cell element has an advantage that it can be easily formed in the form of a thin film on a translucent member. That is, when an amorphous silicon solar cell element is used, a member in which the amorphous silicon solar cell element and the translucent member are integrated in the module laminate can be used. For this reason, by using an amorphous silicon solar cell element, the entire solar cell module can be easily reduced in thickness and weight.
- the translucent member is not particularly limited, but when the translucent member having a flexural modulus of 1 GPa or more (more preferably 10 GPa or more) is used as the translucent member, the sealing material according to the present invention is used. The effect of suppressing deformation is more effectively achieved.
- an engineering plastic (including super engineering plastic) member or a glass member can be used.
- Materials for the engineering plastic (including super engineering plastic) members include polyester resin, acrylic resin, fluorine resin, polycarbonate (PC) resin, polyether ether ketone (PEEK) resin, polyphenylene sulfide (PPS) Resin, polyimide (PI) resin, polyethersulfone (PES) resin, polybutylene terephthalate (PBT) resin, and the like.
- the bending elastic modulus of the engineering plastic member is usually 1 to 7 GPa.
- the same form as that described in the above-mentioned “Glass member” section can be given.
- glass having a low content of iron for example, non-iron (iron free) tempered glass
- iron content Glass having a relatively high content of iron may be used.
- Tempered glass with a low iron content is also called high transmittance glass or white sheet glass.
- Glass having a relatively high iron content is also called blue sheet glass or float glass.
- the bending elastic modulus of the glass is, for example, 73.5 GPa although it depends on the type of glass.
- the translucent member is preferably a glass member from the viewpoint that the effect of suppressing deformation of the sealing material can be obtained particularly remarkably. That is, as a structure of the module laminated body in this invention, it is preferable that it is the structure which has a 2nd glass member as a 1st glass member, a sealing material, a solar cell element, and a translucent member in this order.
- a material of the glass member used as the light transmissive member glass called blue sheet glass or float glass is usually used.
- a tempered glass having excellent translucency and a low iron content that is, high transmittance glass or white sheet glass
- a low iron content that is, high transmittance glass or white sheet glass
- the sealing material is a resin member, and is a member that seals (contains) the solar cell element alone or in cooperation with another member (for example, a translucent member).
- the sealing material protects the solar cell element from temperature change, humidity, impact, and the like.
- each member (for example, translucent member and glass member) of a module laminated body is adhere
- Resins that satisfy these performances include ethylene / vinyl acetate copolymer (EVA), ethylene / methyl acrylate copolymer (EMA), ethylene / ethyl acrylate copolymer (EEA), and ethylene / acrylic acid copolymer.
- EAA ethylene / vinyl acetate copolymer
- EMA ethylene / methyl acrylate copolymer
- EAA ethylene / ethyl acrylate copolymer
- acrylic acid copolymer examples thereof include coalescence (EAA), ethylene / methacrylic acid copolymer (EMAA), ionomer of ethylene / unsaturated carboxylic acid copolymer, polyethylene, modified polyethylene, silicone resin, urethane resin, and the like.
- EAA coalescence
- EAA ethylene / methacrylic acid copolymer
- ionomer of ethylene / unsaturated carboxylic acid copolymer polyethylene, modified polyethylene,
- ethylene As the sealing material, from the viewpoint of more effectively suppressing the deformation of the sealing material, and from the viewpoint of preventing the metal members constituting the module from corroding because of low moisture permeability, ethylene Particularly preferred are ionomers of saturated carboxylic acid copolymers.
- the ionomer of the ethylene / unsaturated carboxylic acid copolymer has a structure in which an ethylene / unsaturated carboxylic acid copolymer is used as a base polymer, and carboxylic acid groups contained in the base polymer are cross-linked by metal ions.
- the ethylene / unsaturated carboxylic acid copolymer as the base polymer is a copolymer obtained by copolymerizing ethylene and a monomer selected from unsaturated carboxylic acid as at least a copolymerization component.
- a monomer other than the unsaturated carboxylic acid may be copolymerized with the ethylene / unsaturated carboxylic acid copolymer, if necessary.
- the content of the structural unit derived from ethylene is preferably 97 to 75% by mass, more preferably 95 to 75% by mass.
- the content of the structural unit derived from the unsaturated carboxylic acid is preferably 3 to 25% by mass, more preferably 5 to 25% by mass.
- the ethylene / unsaturated carboxylic acid copolymer is preferably a binary random copolymer of ethylene and an unsaturated carboxylic acid copolymer.
- unsaturated carboxylic acid examples include acrylic acid, methacrylic acid, ethacrylic acid, itaconic acid, itaconic anhydride, fumaric acid, crotonic acid, maleic acid, maleic anhydride, maleic acid monoester (monomethyl maleate, maleic acid). Monoethyl etc.) and maleic anhydride monoesters (monomethyl maleate anhydride, monoethyl maleate anhydride, etc.) and the like, and unsaturated carboxylic acids or half esters having 3 to 8 carbon atoms. Of these, acrylic acid and methacrylic acid are preferable.
- ethylene / unsaturated carboxylic acid copolymer other copolymer of more than 0% by mass and 30% by mass or less, preferably more than 0% by mass and 25% by mass or less with respect to 100% by mass of ethylene and unsaturated carboxylic acid in total.
- a structural unit derived from a polymerizable monomer may be contained.
- the other copolymerizable monomers include unsaturated esters such as vinyl esters such as vinyl acetate and vinyl propionate; methyl acrylate, ethyl acrylate, isobutyl acrylate, n-butyl acrylate, and 2-ethylhexyl acrylate.
- (meth) acrylic acid esters such as methyl methacrylate and isobutyl methacrylate.
- structural unit derived from other copolymer monomers is contained in the above range, it is preferable because the flexibility of the ethylene / unsaturated carboxylic acid copolymer is improved.
- Examples of the metal ion in the ionomer include monovalent metal ions such as lithium, sodium, potassium, and cesium, divalent metal ions such as magnesium, calcium, strontium, barium, copper, and zinc, and trivalent metal ions such as aluminum and iron. Etc. Of these, sodium, magnesium and zinc are preferable, and zinc is particularly preferable.
- the neutralization degree of the ionomer is preferably 80% or less, more preferably 5 to 80%. In view of processability and flexibility, the neutralization degree is preferably 5 to 60%, more preferably 5 to 30%.
- the ethylene / unsaturated carboxylic acid copolymer which is the base polymer of the ionomer can be obtained by radical copolymerization of each polymerization component at high temperature and high pressure.
- the ionomer can be obtained by reacting such an ethylene / unsaturated carboxylic acid copolymer with zinc oxide, zinc acetate or the like.
- the ionomer preferably has a melt flow rate (MFR; conforming to JIS K7210-1999) at 190 ° C. and a load of 2160 g of 0.1 to 150 g / 10 min. More preferably, it is 1 to 50 g / 10 minutes.
- MFR melt flow rate
- the melting point of the ionomer is not particularly limited, but a melting point of 90 ° C. or higher, particularly 95 ° C. or higher is preferable from the viewpoint of improving heat resistance.
- the content of the ionomer with respect to the total solid content of the sealing material is preferably 60% by mass or more, more preferably 70% by mass or more, and particularly preferably 80% by mass or more.
- the content of the ionomer is within the above range, good adhesiveness, durability and the like can be obtained while maintaining high transparency.
- the content of the ionomer with respect to the total solid content of the sealing material is not 100% by mass
- another resin material may be blended together with the ionomer. Any resin material may be used as long as it is compatible with the ionomer and does not impair transparency and mechanical properties. Of these, an ethylene / unsaturated carboxylic acid copolymer and an ethylene / unsaturated ester / unsaturated carboxylic acid copolymer are preferable. If the resin material blended with the ionomer is a resin material having a melting point higher than that of the ionomer, the heat resistance and durability of the sealing material can be improved.
- the sealing material may contain other components other than the resin.
- other components include a silane coupling agent, an ultraviolet absorber, a light stabilizer, an antioxidant, a colorant, a light diffusing agent, a flame retardant, and a metal deactivator.
- the thickness of the sealing material is not particularly limited, but is preferably 100 ⁇ m to 1000 ⁇ m, more preferably 200 ⁇ m to 800 ⁇ m.
- the preferable range of the size of the sealing material is as described above.
- Example 1 ⁇ Production of solar cell module> A module laminate shown in FIG. 3 using a laminator (a vacuum bonding machine LM-50 ⁇ 50-S manufactured by NPC Corporation) having the same structure as the double vacuum chamber type laminator shown in FIG. A module stack having the same configuration as 107B was integrated to produce a solar cell module. A detailed method is shown below.
- a laminator a vacuum bonding machine LM-50 ⁇ 50-S manufactured by NPC Corporation
- the lower chamber is opened, and the module laminate a is placed on the mounting board in the lower chamber in a direction in which the white plate glass on which the amorphous silicon solar cell element is not formed and the diaphragm are in contact (that is, amorphous silicon).
- the white plate glass on which the solar cell element was formed and the surface of the mounting board were placed (in a direction in contact).
- the lower chamber was closed.
- the distance (clearance) between the module laminate and the diaphragm was 50 mm.
- the upper chamber was evacuated and air was introduced into the upper chamber so that the pressure in the upper chamber was 0.071 MPa (gauge pressure -0.030 MPa).
- the diaphragm made of silicon rubber was bent and deformed toward the lower chamber, and the module laminate a was pressed against the mounting board by the deformed diaphragm. This state was maintained for 5 minutes, and the module laminate was integrated by thermocompression bonding (lamination) to obtain a solar cell module.
- the third step heating of the mounting plate is stopped, and air is introduced into the lower chamber so that the pressure in the lower chamber becomes atmospheric pressure (0.101 MPa; gauge pressure 0 MPa).
- the upper chamber was evacuated to 0.001 MPa (gauge pressure—0.100 MPa). Then, the lower chamber was opened and the solar cell module was taken out.
- the module laminate a prepared in the first step is compared with the solar cell module obtained by integrating the module laminate a by thermocompression bonding, and the sealing material by thermocompression treatment is as follows.
- the uniform expandability of the sheet that is, the spread uniformity of the encapsulant sheet
- the spread of the encapsulant sheet by the thermocompression treatment was measured. At this time, since the size of the spread may vary depending on the location within one side, the maximum value and the minimum value of the spread were obtained for the one side.
- the maximum value and the minimum value of the spread were also obtained for the other three sides of the sealing material sheet.
- the average of the four maximum values obtained above is taken as the average maximum value of spread of the encapsulant sheet (hereinafter referred to as “ ⁇ value”), and the average of the four minimum values obtained above is sealed.
- the average minimum value of the spread of the material sheet (hereinafter referred to as “ ⁇ value”) was used.
- the absolute value of the difference between the ⁇ value and the ⁇ value was determined, and the uniform expandability of the encapsulant sheet was evaluated according to the following evaluation criteria. An evaluation result of “A” indicates that deformation of the sealing material is suppressed.
- Example 2 In Example 1, module laminated body a was made into 250 mm ⁇ 250 mm ⁇ thickness 3.9 mm blue sheet glass (float glass; bending elastic modulus 73.5 GPa), 210 mm ⁇ 210 mm ⁇ thickness 0.3 mm ethylene.
- An ionomer encapsulant sheet of unsaturated carboxylic acid copolymer (High Milan ES (brand PV8615A) manufactured by Mitsui DuPont Polychemical Co., Ltd.) and 250 mm ⁇ 250 mm ⁇ thickness 3 in which an amorphous silicon solar cell element is formed
- a solar cell module was produced in the same manner as in Example 1 except that the laminate b was changed. Similar evaluations were made. The evaluation results are shown in Table 1.
- Example 3 the size of the ionomer sealing material was changed to 245 mm ⁇ 245 mm ⁇ thickness 0.3 mm (the module laminate obtained by this change is hereinafter referred to as “module laminate c”).
- a solar cell module was produced in the same manner as in Example 2 except that the pressure in the upper chamber in the process was changed as shown in Table 1 below, and the same evaluation as in Example 2 was performed. The evaluation results are shown in Table 1.
- Example 5 the encapsulant sheet was changed to an encapsulant sheet laminate having a total thickness of 0.6 mm obtained by stacking two of the encapsulant sheets (the module laminate obtained by this change, A solar cell module was produced in the same manner as in Example 3 except that it was hereinafter referred to as “module laminate d”), and the same evaluation as in Example 3 was performed. The evaluation results are shown in Table 1.
- Example 6 In Example 3, the thickness of the two blue sheet glasses was changed to 1.1 mm, respectively, and the size of the ionomer sealing material was changed to 247 mm ⁇ 247 mm ⁇ thickness 0.3 mm (the module laminate obtained by this change is described below.
- a solar cell module was produced in the same manner as in Example 3 except that it was referred to as “module stack e”, and the same evaluation as in Example 3 was performed. The evaluation results are shown in Table 1.
- Example 1 a solar cell module was produced and implemented in the same manner as in Example 1 except that the pressure in the upper chamber in the third step was changed to atmospheric pressure (0.101 MPa) as shown in Table 1 below. Evaluation similar to Example 1 was performed. The evaluation results are shown in Table 1.
- Example 2 the module laminated body a was made into white sheet glass (non-iron (iron free) tempered glass; bending elastic modulus 73.5 GPa) of 300 mm ⁇ 300 mm ⁇ thickness 4 mm, 250 mm ⁇ 250 mm ⁇ thickness.
- Example 1 0.3 mm ethylene / vinyl acetate copolymer sheet containing a crosslinking agent, a crystalline silicon solar cell element, 250 mm ⁇ 250 mm ⁇ thickness 0.3 mm ethylene / vinyl acetate copolymer sheet containing a crosslinking agent, 300 mm ⁇ 300 mm ⁇ 4 mm thick white sheet glass (non-iron (iron free) tempered glass; bending elastic modulus 73.5 GPa) is changed to a module laminate f obtained by superimposing in this order.
- the solar cell module was manufactured in the same manner as in Example 1 except that the pressure in the upper chamber in the third step was changed as shown in Table 1 below. The same evaluation as in Example 1 was performed. The evaluation results are shown in Table 1.
- Example 2 a solar cell module was produced in the same manner as in Example 2 except that the pressure in the upper chamber in the third step was changed as shown in Table 1 below, and the same evaluation as in Example 2 was performed. It was. The evaluation results are shown in Table 1.
- laminate pressure refers to the pressure in the upper chamber in the third step (hereinafter the same).
- Examples 1 to 6 in which the lamination pressure was in the range of 0.005 MPa to 0.090 MPa, the generation of bubbles was suppressed. Further, in Examples 1 to 6, the shape of the corner portion of the encapsulant sheet and the uniform expandability were excellent, and deformation of the encapsulant sheet due to the thermocompression treatment was suppressed. In particular, in Examples 3 to 6, after the thermocompression treatment, the end surfaces of the two glasses and the end surface of the sealing material sheet were neatly aligned on the outer periphery of the module laminate (that is, viewed from the normal direction). Sometimes, the outer periphery of the two sheets of glass overlapped with the outer periphery of the sealing material sheet).
- Example 4 where the laminating pressure was too low, the module laminate could not be integrated.
- Example 4 where the laminating pressure was slightly higher than that of Comparative Example 4 it was possible to integrate the module laminate while suppressing the generation of bubbles and suppressing the deformation of the sealing material sheet.
- FIG. 4 is a photograph showing a corner portion of the glass substrate in the solar cell module according to Comparative Example 1. As shown in FIG. 4, bubbles were generated at the corners of the glass substrate.
- FIG. 5 is a photograph showing the entire solar cell module according to Example 2. As shown in FIG. 5, in the solar cell module according to Example 2, the shape of the corner portion of the encapsulant sheet is maintained at a 90 ° corner even after the thermocompression treatment, and sealing is performed by the thermocompression treatment. The material sheet spread evenly. Thus, in the solar cell module according to Example 2, the deformation of the sealing material due to the thermocompression treatment was suppressed.
- FIG. 6 is a photograph showing the entire solar cell module according to Comparative Example 3.
- the shape of the corner portion of the sealing material sheet was changed to a rounded shape by the thermocompression treatment.
- the sealing material sheet was spreading nonuniformly by the thermocompression-bonding process. That is, when paying attention to one side of the encapsulant sheet, the spread is small at the central portion of the one side, and the spread is large at the end portion of the one side. It was.
- the deformation of the sealing material due to the thermocompression treatment was significant.
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Abstract
Description
図7は、二重真空室方式のラミネーターの一例を示す概略断面図である。
図7に示す二重真空室方式のラミネーターは、ダイヤフラム(以下、「可撓性部材」と表現する場合がある)101(例えば、シリコンゴム製のダイヤフラム)と、ダイヤフラム101によって仕切られた上部チャンバー(以下、「第1チャンバー」と表現する場合がある)102及び下部チャンバー(以下、「第2チャンバー」と表現する場合がある)104と、下部チャンバー104内に設けられた載置盤103と、を備えている。載置盤103にはヒーター133が内蔵されている。載置盤103には、加熱圧着処理の対象となるモジュール積層体207が載置される。
(2)上部チャンバー102を真空減圧する。
(3)上部チャンバー102の真空減圧を止めると同時に下部チャンバー104についても真空減圧する。
(4)ヒーター133によって載置盤103を加熱することにより、封止材224、222の加熱を行う。封止材224、222の加熱は、封止材224、222を構成する樹脂が軟化または溶融する温度となるまで行う。
(5)次に、下部チャンバー104を真空減圧したまま上部チャンバー102を大気圧に戻し、下部チャンバー104と上部チャンバー102との圧力差を利用して、ダイヤフラム101でモジュール積層体207を載置盤103に向けて押圧し、モジュール積層体207を加熱圧着する。
(6)封止材224、222を構成する樹脂が、架橋反応が必要な樹脂(例えば、エチレン酢酸ビニル共重合体(EVA))である場合には、更に架橋反応を起こす温度まで、封止材224、222を加熱し、架橋が終了するまでその温度を維持する。
(7)十分な圧着時間が経過した後、下部チャンバー104を大気圧に戻す。その後、下部チャンバー104を開放し、モジュール積層体207が一体化して得られた太陽電池モジュールを取り出す。
例えば、封止材中に含まれる架橋剤の急激な分解に起因する発泡現象を防止する方法が知られている(例えば、特許第4401649号公報参照)。
また、予備加圧してから加熱を開始して、加熱圧着する方法が知られている(例えば、特開2003-282920号公報参照)。
また、加熱前に積層体を真空状態で短時間放置後、加熱圧着する方法が知られている(例えば、特許第2915327号公報参照)が知られている。
また、誘導加熱を用いた二重真空室方式のラミネーターが知られている(例えば、特開2010-23485号公報参照)。
近年では、上記トリミングを省略するために、透光性基板及び裏面保護材よりも小さい封止材を用い、モジュール積層体の構造を、封止材の外周が、透光性基板及び裏面保護材の外周の内側に配置される構造とすることも行われている。これにより、加熱圧着処理による封止材のはみ出し(squeezing out)を防止している。
<1> 可撓性部材と、該可撓性部材によって仕切られた第1チャンバー及び第2チャンバーと、第2チャンバー内に前記可撓性部材に対向して設けられ加熱手段を有する載置盤と、を備えた二重真空室方式ラミネーターの前記載置盤上に、少なくとも、ガラス製部材、封止材、太陽電池素子、及び透光性部材をこの順に有し前記封止材の外周が前記ガラス製部材及び前記透光性部材の外周の内側に位置するモジュール積層体を、前記ガラス製部材が前記可撓性部材側となるように載置する第1工程と、前記第1工程の後、前記第1チャンバー内及び前記第2チャンバー内を減圧する第2工程と、前記第2工程の後、前記第1チャンバー内の圧力を0.005MPa~0.090MPa(ゲージ圧-0.096~-0.011MPa)に上昇させ、撓み変形した前記可撓性部材によって前記モジュール積層体を加熱された前記載置盤に押圧することにより、前記モジュール積層体を加熱圧着し一体化させる第3工程と、を有する太陽電池モジュールの製造方法である。
<3> 前記透光性部材がガラス製部材である<1>又は<2>に記載の太陽電池モジュールの製造方法。
<4> 前記封止材が、エチレン・不飽和カルボン酸共重合体のアイオノマーを含む<1>~<3>のいずれか1項に記載の太陽電池モジュールの製造方法。
<6> 前記モジュール積層体が、アモルファスシリコン太陽電池素子が形成された透光性部材の該アモルファスシリコン太陽電池素子上に、エチレン・不飽和カルボン酸共重合体のアイオノマーを含む封止材と、ガラス製部材と、この順に有する<1>~<5>のいずれか1項に記載の太陽電池モジュールの製造方法。
<7> 前記ガラス製部材の厚みが4mm以下である<1>~<6>のいずれか1項に記載の太陽電池モジュールの製造方法。
<8> 前記封止材の外周と前記ガラス製部材及び前記透光性部材の外周との距離が1.5mm~25mmである<1>~<7>のいずれか1項に記載の太陽電池モジュールの製造方法。
上記効果が得られる理由は、以下のように推測される。但し、本発明は以下の理由によって限定されることはない。
しかしながら、上記従来の製造方法では、裏面保護材としてガラス製部材(ガラスシート)を用いた場合、ガラス製部材が高い剛性(曲げ弾性率)を有すること、及び、圧着力(押圧)が強すぎることに起因して、以下の問題が生じる。
即ち、加熱圧着処理後、下部チャンバーが大気圧に戻されてガラス製部材がダイヤフラムによる押圧から開放される際、ガラス製部材に対し、ダイヤフラムで押圧されて撓んでいる状態から反発してもとの形状に戻ろうとする反発力が強く働く。即ち、ダイヤフラムによる押圧及び該押圧からの開放により、ガラス製部材に大きな応力変化が生じる。このときの応力変化により、特に、該応力変化が集中するガラス製部材のコーナー部分において気泡が発生しやすくなる。
この現象は、モジュール積層体(太陽電池モジュール)の一部材としてガラス製部材が含まれる場合に発生し、モジュール積層体(太陽電池モジュール)にガラス製部材が含まれない場合(例えば、ガラス製部材に代えてプラスチックフィルムを用いた場合)には発生しない、という特異な現象である。
従って、本発明の太陽電池モジュールの製造方法によれば、応力変化が集中するガラス製部材のコーナー部分における気泡の発生を抑制できる。
この現象も、モジュール積層体(太陽電池モジュール)の一部材としてガラス製部材が含まれる場合に発生し、モジュール積層体(太陽電池モジュール)にガラス製部材が含まれない場合(例えば、ガラス製部材に代えてプラスチックフィルムを用いた場合)には発生しない、という特異な現象である。この理由は、プラスチックフィルムはガラス製部材に比べて剛性(曲げ弾性率)が低くフレキシブルであるため、加熱圧着処理時にかかる圧着力を均一に逃がすことができるため、と推測される。
この前記第3工程で得られる圧着力は、モジュール積層体内の気体を排気するには十分な圧着力であるので、モジュール積層体内の脱気不足による気泡の発生を抑制できる。その結果、本発明の太陽電池モジュールの製造方法によれば、コーナー部分を含めた太陽電池モジュールの全面にわたる気泡の発生を防止できる。
図1に示すように、本実施形態における二重真空室方式のラミネーターは、可撓性部材としてのダイヤフラム101と、第1チャンバーとしての上部チャンバー102と、第2チャンバーとしての下部チャンバー104と、を備えている。
上部チャンバー102と下部チャンバー104とは、ダイヤフラム101によって仕切られている。即ち、上部チャンバー102の内部空間は、該上部チャンバー102の内壁とダイヤフラム101とによって形成されており、下部チャンバー104の内部空間は、該下部チャンバー104の内壁とダイヤフラム101とによって形成されている。
本実施形態では、下部チャンバー104が開いた状態のときにモジュール積層体107を出し入れし(例えば、前記第1工程の操作を行い)、下部チャンバー104が閉じた状態のときに上部チャンバー102内の圧力を変化させる(例えば、前記第3工程の操作を行う)。
なお、上部チャンバー102及び下部チャンバー104は図1に示す形態に限定されることはなく、吸気口及び排気口を別個に備えた構成であってもよい。
撓み変形したダイヤフラム101によって、モジュール積層体107を載置盤103に向けて押圧する。
載置盤103上には、モジュール積層体107が載置される。
更に、載置盤103には、モジュール積層体107を加熱するためのヒーター133(加熱手段)が内蔵されている。
この隙間、即ち、モジュール積層体107とダイヤフラム101との距離は、通常5mm~200mm、好ましくは10mm~100mmとなっている。
前記ガラス製部材及び前記透光性部材の大きさ及び形状には特に限定はないが、前記ガラス製部材及び前記透光性部材としては、例えば、一辺200mm~3000mmの四角形(正方形又は長方形)の部材を用いることができる。
前記封止材の大きさ及び形状には特に限定はないが、前記封止材としては、一辺が前記ガラス製部材及び前記透光性部材の一辺よりも3mm~50mm(より好ましくは4~25mm)短い、四角形(正方形又は長方形)の部材を用いることができる。
ここで、「大きさ」及び「形状」とは、法線方向からみたときの大きさ及び形状である(以下、同様である)。
前記封止材の外周と前記ガラス製部材及び前記透光性部材の外周との距離は、1.5mm~25mmであることが好ましく、2~12.5mmであることがより好ましい。
前記封止材の外周と前記ガラス製部材及び前記透光性部材の外周との距離が1.5mm以上であれば、加熱圧着処理により前記ガラス製部材及び前記透光性部材の外周から前記封止材がはみ出す現象を抑制できる。このため、従来の太陽電池モジュールの製造方法では加熱圧着処理後の工程として必須であった、はみ出した封止材を除去する工程(トリミング工程)が不要となる。
前記ガラス製部材、前記太陽電池素子、前記封止材、及び前記透光性部材等の好ましい形態については後述する。
図2に示すように、モジュール積層体107Aの構成は、ガラス製部材である裏面保護材25A、封止材24A、太陽電池素子23A、封止材22A、及び透光性部材である透光性基板21Aがこの順に積層され、かつ、前記2つの封止材22A及び24Aの外周が前記裏面保護材25A及び前記透光性基板21Aの外周の内側に位置する構成となっている。太陽電池素子23Aは複数存在しており、太陽電池素子23Aのそれぞれは、導線(インターコネクターとも呼ばれている)で接続されている。
また、本発明において「裏面保護材」とは、太陽電池モジュール(モジュール積層体)の部材であって、受光面側の反対側(該反対側の面を「裏面」という)に配置され、他の部材(太陽電池素子や封止材等)を保護するための部材を指す。
図3に示すように、モジュール積層体107Bの構成は、ガラス製部材である裏面保護材25B、封止材24B、太陽電池素子23B、及び透光性部材である透光性基板21Bがこの順に積層され、かつ、前記封止材24Bの外周が前記裏面保護材25B及び前記透光性基板21Bの外周の内側に位置する構成となっている。太陽電池素子23Bは複数存在しており、太陽電池素子23Bのそれぞれが、導線(インターコネクターとも呼ばれている)で接続されている。
モジュール積層体107Bの形態としては、透光性基板21Bと太陽電池素子23Bとが別個独立の部材である形態であってもよいし、透光性基板21Bと太陽電池素子23Bとが一体の部材である形態であってもよい。
透光性基板21Bと太陽電池素子23Bとが一体の部材である形態としては、透光性基板21B(例えばガラス基板)上に、太陽電池素子23Bとしてのアモルファスシリコン太陽電池素子が形成されている形態が挙げられる。
前記第1工程の操作として、下部チャンバー104を開き、載置盤103上にモジュール積層体107を、透光性部材が載置盤103側、ガラス製部材がダイヤフラム101側となるように載置する。その後、下部チャンバー104を閉じる。
前記第1工程の後、前記第2工程の操作として、上部チャンバー102内及び下部チャンバー104内を減圧する。
このとき、上部チャンバー102内及び下部チャンバー104内を同時に減圧してもよいし、上部チャンバー102内の減圧を下部チャンバー104内の減圧よりも先に行いダイヤフラム101を上部チャンバー102側に吸引しておいてもよい。
上部チャンバー102内及び下部チャンバー104内の減圧は、それぞれ、図示しない真空ポンプを用い、チャンバー内を真空に近い状態(例えば0.005MPa未満、好ましくは0.004MPa以下、更に好ましくは0.0001~0.004MPa)まで排気することにより行う。
上部チャンバー102内及び下部チャンバー104内の圧力が目的とする圧力に到達するまでの時間を利用して、ヒーター133により載置盤103を加熱することでモジュール積層体107を加熱する。
このときの加熱温度は、封止材の種類にもよるが、100℃~200℃が好ましく、120℃~180℃がより好ましい。
この第2工程における減圧(排気)により、モジュール積層体107を構成する各部材間に取り込まれている気体成分(空気など)や、各部材を構成する素材中に取り込まれている気体成分(空気など)が排出される。
前記第2工程の後、第3工程の操作として、上部チャンバー102内の圧力を0.005MPa~0.090MPa(ゲージ圧-0.096~-0.011MPa)に上昇させる。具体的には、例えば、下部チャンバー104内の排気を継続させながら、上部チャンバー102内の排気をとめ、上部チャンバー102内の圧力が上記の値となるように、上部チャンバー102内に空気や窒素などを供給する。
上部チャンバー102内の圧力を上記の値となるように上昇させることにより、上部チャンバー102内と下部チャンバー104内との間に圧力差が生じ、ダイヤフラム101が低圧側の下部チャンバー104内に向けて撓み変形する。
撓み変形したダイヤフラム101によってモジュール積層体107が載置盤103に押圧される。モジュール積層体107は、この押圧による圧着力と、加熱された載置盤103の温度と、によって加熱圧着される。これにより、封止材を構成する樹脂が軟化または溶融し、モジュール積層体107が一体化されて太陽電池モジュールが得られる。
第3工程における上部チャンバー102内の圧力は、封止材の変形をより抑制する観点からは、0.005MPa~0.080MPaが好ましい。
加熱圧着処理の時間は、1~8分間が好ましく、2~6分間がより好ましい。
第3工程の後、通常は、下部チャンバー104内の圧力が大気圧に戻され、下部チャンバー104から太陽電池モジュールが取り出される。
例えば、第3工程の後、ヒーター133による加熱を止め、上部チャンバー102及び下部チャンバー104を大気圧に戻し、次いで閉じていた下部チャンバー104を開いて、下部チャンバー104から太陽電池モジュールを取り出す。その後、太陽電池モジュールを冷却する。
前記ガラス製部材としては特に限定はないが、通常、太陽電池モジュールに使用されているガラスシートまたはガラス板を用いることができる。
表面圧縮応力が20MPa以上のガラス製部材としては、具体的には倍強度ガラス(double strength glass)、強化ガラス(tempered glass)、超強化ガラス(ultra tempered glass)が挙げられる。
前記倍強度ガラスは表面圧縮応力が通常20~60MPaのものであり、前記強化ガラスは表面圧縮応力が通常90~130MPaのものであり、前記超強化ガラスは表面圧縮応力が通常180~250MPaのものである。
表面圧縮応力を大きくするほど強度は向上するが、そりが大きくなりやすく製造コストも大きくなりやすい。倍強度ガラスは、比較的そりの少ないものを製造しやすく、破損したときには細片になって落下することがないという特長を有する。
また、前記ガラスとしては、鉄分の含有量が少ないガラス(glass having a low content of iron)(例えば、鉄分の含有量が少ない強化ガラス(non-iron(iron free) tempered glass))を用いてもよいし、鉄分の含有量が比較的多いガラス(glass having a relatively high content of iron)を用いてもよい。
鉄分含有量が少ない強化ガラス(non-iron(iron free) tempered glass)は、高透過ガラス(high transmittance glass)や白板ガラス(white sheet glass)とも呼ばれている。
鉄分含有量が比較的多いガラス(glass having a relatively high content of iron)は、青板ガラス(blue sheet glass)やフロートガラス(float glass)とも呼ばれている。
本発明の太陽電池モジュールが、裏面保護材としてのガラス製部材、封止材、太陽電池素子、及び透光性基板をこの順に有する構成である場合、通常は、透光性基板によって太陽電池モジュールの強度が保持される。従って、かかる構成の太陽電池モジュールでは、裏面保護材としてのガラス製部材の厚みは、透光性基板の厚みよりも薄くすることが、太陽電池モジュール全体の薄型化及び軽量化の観点から好ましい。
前記ガラス製部材の下限には制限が無いものの、通常は0.2mm以上、好ましくは0.5mm以上である。
前記太陽電池素子としては、結晶シリコン太陽電池素子、多結晶シリコン太陽電池素子、アモルファスシリコン太陽電池素子、銅インジウムセレナイド太陽電池素子、化合物半導体太陽電池素子、有機色素太陽電池素子など、従来公知の太陽電池素子を目的応じて選択できる。
前記アモルファスシリコン太陽電池素子は、太陽電池素子としての性能に優れることに加え、透光性部材上に薄膜の形態で容易に形成できるという利点を有する。即ち、アモルファスシリコン太陽電池素子を用いる場合には、前記モジュール積層体において、アモルファスシリコン太陽電池素子及び透光性部材が一体となった部材が用いることができる。このため、アモルファスシリコン太陽電池素子を用いることで、太陽電池モジュール全体の薄型化及び軽量化が容易に達成される。
前記透光性部材としては特に限定はないが、前記透光性部材として、曲げ弾性率が1GPa以上(更には10GPa以上)の透光性部材を用いたときに、本発明による封止材の変形抑制の効果がより効果的に奏される。
前記エンジニアリングプラスチック(スーパーエンジニアリングプラスチックを含む)製部材の材質としては、ポリエステル樹脂、アクリル樹脂、フッ素系樹脂、ポリカーネート(PC)樹脂、ポリエーテル・エーテル・ケトン(PEEK)樹脂、ポリフェニレンスルフィド(PPS)樹脂、ポリイミド(PI)樹脂、ポリエーテルスルホン(PES)樹脂、ポリブチレンテレフタレート(PBT)樹脂、等が挙げられる。
前記エンジニアリングプラスチック製部材の曲げ弾性率は、通常1~7GPaである。
例えば鉄分の含有量が少ないガラス(glass having a low content of iron)(例えば、鉄分の含有量が少ない強化ガラス(non-iron(iron free) tempered glass))を用いてもよいし、鉄分の含有量が比較的多いガラス(glass having a relatively high content of iron)を用いてもよい。
鉄分含有量が少ない強化ガラス(non-iron(iron free) tempered glass)は、高透過ガラス(high transmittance glass)や白板ガラス(white sheet glass)とも呼ばれている。
鉄分含有量が比較的多いガラス(glass having a relatively high content of iron)は、青板ガラス(blue sheet glass)やフロートガラス(float glass)とも呼ばれている。
ガラスの曲げ弾性率は、ガラスの種類にもよるが、例えば73.5GPaである。
透光性部材として用いる場合のガラス製部材の材質は、青板ガラス(blue sheet glass)やフロートガラス(float glass)と呼ばれているガラスが通常使用される。太陽電池素子へ到達する光入射量を高めたい場合には、透光性の優れる、鉄分含有量が少ない強化ガラス(即ち、高透過ガラス(high transmittance glass)又は白板ガラス(white sheet glass))が好ましく選択される。
前記封止材は樹脂製の部材であり、単独で、又は、他の部材(例えば、透光性部材)などと協働して太陽電池素子を封止する(封じ込める)部材である。
前記封止材により、太陽電池素子が、温度変化、湿度、衝撃等から保護される。また、前記封止材を介してモジュール積層体の各部材(例えば、透光性部材及びガラス製部材)が接着され、一体化される。
したがって、前記封止材には、耐侯性、接着性、充填性(additive holding capability)、耐熱性、耐寒性、耐衝撃性、必要に応じて透明性等の諸性能が要求される傾向がある。
これらの性能を満たす樹脂としては、エチレン・酢酸ビニル共重合体(EVA)、エチレン・アクリル酸メチル共重合体(EMA)、エチレン・アクリル酸エチル共重合体(EEA)、エチレン・アクリル酸共重合体(EAA)、エチレン・メタクリル酸共重合体(EMAA)、エチレン・不飽和カルボン酸共重合体のアイオノマー、ポリエチレン、変性ポリエチレン、シリコン樹脂、ウレタン樹脂などが挙げられる。また、これらの樹脂の耐熱性を改良するために、必要に応じて、架橋剤、架橋助剤を併用してもよい。
前記封止材としては、封止材の変形抑制の効果をより効果的に奏する観点、及び、水分透過率が小さいためモジュールを構成する金属部材が腐食することを防止できる観点から、エチレン・不飽和カルボン酸共重合体のアイオノマーが特に好ましい。
前記エチレン・不飽和カルボン酸共重合体は、エチレンと不飽和カルボン酸共重合体との2元ランダム共重合体とするのが好ましい。
前記エチレンから導かれる構成単位の含有割合が75質量%以上であると、共重合体の耐熱性、機械的強度等が良好である。一方、エチレンから導かれる構成単位の含有割合が97質量%以下であると、接着性等が良好である。
前記不飽和カルボン酸から導かれる構成単位の含有割合が3質量%以上であると、透明性や柔軟性が良好である。また、不飽和カルボン酸から導かれる構成単位含有割合が25質量%以下であるものは、ベタ付きが抑えられ、加工性が良好である。
中でも、アクリル酸、メタクリル酸が好ましい。
前記その他の共重合性モノマーとしては、不飽和エステル、例えば、酢酸ビニル及びプロピオン酸ビニル等のビニルエステル;アクリル酸メチル、アクリル酸エチル、アクリル酸イソブチル、アクリル酸n-ブチル、アクリル酸2-エチルヘキシル、メタクリル酸メチル及びメタクリル酸イソブチル等の(メタ)アクリル酸エステルなどが挙げられる。その他の共重合体モノマーから導かれる構成単位が上記範囲で含まれていると、エチレン・不飽和カルボン酸共重合体の柔軟性が向上するので好ましい。
他の成分としては、シランカップリング剤、紫外線吸収剤、光安定剤、酸化防止剤、着色剤、光拡散剤、難燃剤、金属不活性剤等が挙げられる。
前記封止材の大きさの好ましい範囲については前述のとおりである。
<太陽電池モジュールの作製>
図1に示す二重真空室方式のラミネーターと同様の構成のラミネーター((株)エヌ・ピー・シー製の真空貼り合わせ機LM-50×50-S)を用い、図3に示すモジュール積層体107Bと同様の構成のモジュール積層体を一体化させて太陽電池モジュールを作製した。詳細な方法を以下に示す。
300mm×300mm×厚み4mmの白板ガラス(white sheet glass)(non-iron(iron free) tempered glass;曲げ弾性率73.5GPa)と、250mm×250mm×厚み0.3mmのエチレン・不飽和カルボン酸共重合体のアイオノマー製封止材シート(三井・デュポンポリケミカル(株)製のハイミランES(銘柄PV8615A))と、アモルファスシリコン太陽電池素子が形成された300mm×300mm×厚み4mmの白板ガラス(white sheet glass)(non-iron(iron free) tempered glass;曲げ弾性率73.5GPa)と、をこの順に、アモルファスシリコン太陽電池素子と前記封止材シートとが接する向きに重ね合わせ、モジュール積層体aを得た。このとき、上記の3つの部材の中心が重なるようにして重ね合わせることにより、封止材シートの外周が、2枚の白板ガラスの外周の内側に配置されるようにした。
その後、下部チャンバーを閉じた。下部チャンバーを閉じた状態において、モジュール積層体とダイヤフラムとの距離(クリアランス)は50mmとなっていた。
第1工程の後、上部チャンバー内及び下部チャンバー内を真空ポンプで3分間排気し、上部チャンバー及び下部チャンバーの圧力を、ともに0.001MPa(ゲージ圧-0.100MPa)に調整した。この3分間の排気中に、載置盤を150℃まで加熱した。
第2工程の後、上部チャンバーの排気をとめ、上部チャンバー内に、該上部チャンバー内の圧力が0.071MPa(ゲージ圧-0.030MPa)となるように空気を導入した。これにより、シリコンゴム製のダイヤフラムを下部チャンバー側に撓み変形させ、撓み変形したダイヤフラムによってモジュール積層体aを載置盤に押圧した。
この状態を5分間維持し、モジュール積層体を加熱圧着(ラミネート)して一体化し、太陽電池モジュールを得た。
その後、下部チャンバーを開き、太陽電池モジュールを取り出した。
上記太陽電池モジュールについて、以下の評価を行った。
評価結果を下記表1に示す。
上記で取り出した太陽電池モジュールについて、0.5mm以上の気泡の有無を目視で確認し、下記評価基準に従って評価した。
A … 0.5mm以上の気泡が確認されなかった。
B … 0.5mm以上の気泡が確認された。
上記で取り出した太陽電池モジュールについて、封止材シートの四隅のコーナー部分を目視で観察し、下記評価基準に従って評価した。
評価結果が「A」であることは、封止材の変形が抑制されていることを示す。
A … 封止材シートの四隅のコーナー部分が、90°の角を維持しているか、曲率半径2mm以内の丸みを帯びた形状に変形するに留まっていた(例えば、図5参照)。
B … 封止材シートの四隅のコーナー部分が、曲率半径2mmを超える丸みを帯びた形状に変形していた(例えば、図6参照)。
第1工程で準備したモジュール積層体aと、該モジュール積層体aが加熱圧着され一体化されて得られた太陽電池モジュールと、を対比し、以下のようにして、加熱圧着処理による封止材シートの均一拡張性(即ち、封止材シートの拡がりの均一性)を測定した。
まず、封止材シートの一つの辺に着目し、加熱圧着処理による封止材シートの拡がり(加熱圧着処理による、当該一つの辺の移動距離)を測定した。このとき、一つの辺の中でも場所によって拡がりの大きさが異なる場合があるため、当該一つの辺について、拡がりの最大値と最小値とをそれぞれ求めた。
同様にして、前記封止材シートの他の三辺についても、それぞれ、拡がりの最大値及び最小値を求めた。
以上で得られた4つの最大値の平均を、封止材シートの拡がりの平均最大値(以下、「α値」とする)とし、以上で得られた4つの最小値の平均を、封止材シートの拡がりの平均最小値(以下、「β値」とする)とした。上記α値と上記β値との差の絶対値を求め、下記評価基準に従って、封止材シートの均一拡張性を評価した。
評価結果が「A」であることは、封止材の変形が抑制されていることを示す。
A … 上記α値と上記β値との差の絶対値が2mm未満であった(例えば、図5参照)。
B … 上記α値と上記β値との差の絶対値が2mm以上であった(例えば、図6参照)。
実施例1において、モジュール積層体aを、250mm×250mm×厚み3.9mmの青板ガラス(blue sheet glass)(float glass;曲げ弾性率73.5GPa)と、210mm×210mm×厚み0.3mmのエチレン・不飽和カルボン酸共重合体のアイオノマー製封止材シート(三井・デュポンポリケミカル(株)製のハイミランES(銘柄PV8615A))と、アモルファスシリコン太陽電池素子が形成された250mm×250mm×厚み3.9mmの青板ガラス(blue sheet glass)(float glass;曲げ弾性率73.5GPa)と、をこの順に、アモルファスシリコン太陽電池素子と前記封止材シートとが接する向きに重ね合わせて得られたモジュール積層体bに変更したこと以外は実施例1と同様にして太陽電池モジュールを作製し、実施例1と同様の評価を行った。
評価結果を表1に示す。
実施例2において、アイオノマー製封止材の大きさを245mm×245mm×厚み0.3mmに変更し(この変更により得られたモジュール積層体を、以下「モジュール積層体c」とする)、第3工程における上部チャンバーの圧力を、下記表1に示すように変更したこと以外は実施例2と同様にして太陽電池モジュールを作製し、実施例2と同様の評価を行った。
評価結果を表1に示す。
実施例3において、封止材シートを、該封止材シートを2枚重ねて得られた総厚み0.6mmの封止材シート積層体に変更(この変更により得られたモジュール積層体を、以下「モジュール積層体d」とする)したこと以外は実施例3と同様にして太陽電池モジュールを作製し、実施例3と同様の評価を行った。
評価結果を表1に示す。
実施例3において、2枚の青板ガラスの厚みをそれぞれ1.1mmに、アイオノマー製封止材の大きさ247mm×247mm×厚み0.3mmに変更(この変更により得られたモジュール積層体を、以下「モジュール積層体e」とする)したこと以外は実施例3と同様にして太陽電池モジュールを作製し、実施例3と同様の評価を行った。
評価結果を表1に示す。
実施例1において、第3工程における上部チャンバーの圧力を、下記表1に示すように大気圧(0.101MPa)に変更したこと以外は実施例1と同様にして太陽電池モジュールを作製し、実施例1と同様の評価を行った。
評価結果を表1に示す。
実施例1において、モジュール積層体aを、300mm×300mm×厚み4mmの白板ガラス(white sheet glass)(non-iron(iron free) tempered glass;曲げ弾性率73.5GPa)と、250mm×250mm×厚み0.3mmの、架橋剤を含むエチレン・酢酸ビニル共重合体シートと、結晶シリコン太陽電池素子と、250mm×250mm×厚み0.3mmの、架橋剤を含むエチレン・酢酸ビニル共重合体シートと、300mm×300mm×厚み4mmの白板ガラス(white sheet glass)(non-iron(iron free) tempered glass;曲げ弾性率73.5GPa)と、をこの順に重ね合わせて得られたモジュール積層体fに変更し、かつ、第3工程における上部チャンバーの圧力を、下記表1に示すように変更したこと以外は実施例1と同様にして太陽電池モジュールを作製し、実施例1と同様の評価を行った。
評価結果を表1に示す。
実施例2において、第3工程における上部チャンバーの圧力を、下記表1に示すように変更したこと以外は実施例2と同様にして太陽電池モジュールを作製し、実施例2と同様の評価を行った。
評価結果を表1に示す。
また、ラミネート圧力が低すぎる比較例4では、モジュール積層体を一体化させることができなかった。これに対し、比較例4よりもラミネート圧力がわずかに高い実施例4では、気泡の発生を抑制し、封止材シートの変形を抑制しながら、モジュール積層体を一体化させることができた。
図4に示すように、ガラス基板のコーナー部分に気泡が発生していた。
図5に示すように、実施例2に係る太陽電池モジュールでは、加熱圧着処理後においても、封止材シートのコーナー部分の形状が90°の角に維持されており、加熱圧着処理により封止材シートが均一に拡がっていた。このように、実施例2に係る太陽電池モジュールでは、加熱圧着処理による封止材の変形が抑制されていた。
図6に示すように、比較例3に係る太陽電池モジュールでは、加熱圧着処理により、封止材シートのコーナー部分の形状が、丸みを帯びた形状に変化していた。また、比較例3に係る太陽電池モジュールでは、加熱圧着処理により封止材シートが不均一に拡がっていた。即ち、封止材シートの一辺に着目すると、当該一辺の中央部分では拡がりが小さく、当該一辺の端部では広がりが大きくなっており、その結果、当該一辺の中央部分が内側に入り込んだ形状となっていた。このように、比較例3に係る太陽電池モジュールでは、加熱圧着処理による封止材の変形が顕著であった。
本明細書に記載された全ての文献、特許出願、および技術規格は、個々の文献、特許出願、および技術規格が参照により取り込まれることが具体的かつ個々に記された場合と同程度に、本明細書中に参照により取り込まれる。
Claims (8)
- 可撓性部材と、該可撓性部材によって仕切られた第1チャンバー及び第2チャンバーと、第2チャンバー内に前記可撓性部材に対向して設けられ加熱手段を有する載置盤と、を備えた二重真空室方式ラミネーターの前記載置盤上に、少なくとも、ガラス製部材、封止材、太陽電池素子、及び透光性部材をこの順に有し前記封止材の外周が前記ガラス製部材及び前記透光性部材の外周の内側に位置するモジュール積層体を、前記ガラス製部材が前記可撓性部材側となるように載置する第1工程と、
前記第1工程の後、前記第1チャンバー内及び前記第2チャンバー内を減圧する第2工程と、
前記第2工程の後、前記第1チャンバー内の圧力を0.005MPa~0.090MPa(ゲージ圧-0.096MPa~-0.011MPa)に上昇させ、撓み変形した前記可撓性部材によって前記モジュール積層体を加熱された前記載置盤に押圧することにより、前記モジュール積層体を加熱圧着し一体化させる第3工程と、
を有する太陽電池モジュールの製造方法。 - 前記透光性部材の曲げ弾性率が1GPa以上である請求項1に記載の太陽電池モジュールの製造方法。
- 前記透光性部材がガラス製部材である請求項1又は請求項2に記載の太陽電池モジュールの製造方法。
- 前記封止材が、エチレン・不飽和カルボン酸共重合体のアイオノマーを含む請求項1~請求項3のいずれか1項に記載の太陽電池モジュールの製造方法。
- 前記モジュール積層体が、アモルファスシリコン太陽電池素子が形成された透光性部材の該アモルファス太陽電池素子上に、封止材とガラス製部材とをこの順に有する請求項1~請求項4のいずれか1項に記載の太陽電池モジュールの製造方法。
- 前記モジュール積層体が、アモルファスシリコン太陽電池素子が形成された透光性部材の該アモルファス太陽電池素子上に、エチレン・不飽和カルボン酸共重合体のアイオノマーを含む封止材と、ガラス製部材と、をこの順に有する請求項1~請求項5のいずれか1項に記載の太陽電池モジュールの製造方法。
- 前記ガラス製部材の厚みが4mm以下である請求項1~請求項6のいずれか1項に記載の太陽電池モジュールの製造方法。
- 前記封止材の外周と前記ガラス製部材及び前記透光性部材の外周との距離が1.5mm~25mmである請求項1~請求項7のいずれか1項に記載の太陽電池モジュールの製造方法。
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| JP2012502043A JP5247931B2 (ja) | 2010-07-09 | 2011-07-08 | 太陽電池モジュールの製造方法 |
| CN201180031596.6A CN102959727B (zh) | 2010-07-09 | 2011-07-08 | 太阳能电池组件的制造方法 |
| US13/808,412 US20130102105A1 (en) | 2010-07-09 | 2011-07-08 | Production method of solar cell module |
| DE112011102313T DE112011102313T5 (de) | 2010-07-09 | 2011-07-08 | Herstellungsverfahren des Solarzellenmoduls |
| KR1020137001004A KR101493386B1 (ko) | 2010-07-09 | 2011-07-08 | 태양 전지 모듈의 제조 방법 |
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| JP (1) | JP5247931B2 (ja) |
| KR (1) | KR101493386B1 (ja) |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013118361A1 (ja) * | 2012-02-07 | 2013-08-15 | シャープ株式会社 | 太陽電池モジュールの製造方法、及びラミネータ装置 |
| JP2014003170A (ja) * | 2012-06-19 | 2014-01-09 | Honda Motor Co Ltd | 太陽電池モジュールの封止方法および真空ラミネート装置 |
| JP2014017297A (ja) * | 2012-07-06 | 2014-01-30 | Sharp Corp | 光電変換モジュール及び光電変換モジュールの製造方法。 |
| JP2015039817A (ja) * | 2013-08-21 | 2015-03-02 | 北川精機株式会社 | プレス装置 |
| JP2016082006A (ja) * | 2014-10-14 | 2016-05-16 | 積水化学工業株式会社 | 太陽電池の製造方法 |
| CN110529807A (zh) * | 2012-08-03 | 2019-12-03 | 常州亚玛顿股份有限公司 | 太阳能照明系统 |
| CN111081817A (zh) * | 2019-12-26 | 2020-04-28 | 吕晨康 | 一种太阳能电池板组件层压敷设装置 |
| JP2021518819A (ja) * | 2018-04-16 | 2021-08-05 | ボレアリス エージー | 多層積層体の製造方法 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102015101259A1 (de) | 2015-01-28 | 2016-07-28 | Reis Gmbh & Co. Kg Maschinenfabrik | Verfahren und Anordnung zum Fügen von Bauteilen mittels Laserschweißens |
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| JP2021034639A (ja) * | 2019-08-28 | 2021-03-01 | パナソニック株式会社 | 太陽電池モジュールの製造方法 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001061763A1 (en) * | 2000-02-18 | 2001-08-23 | Bridgestone Corporation | Sealing film for solar cell and method for manufacturing solar cell |
| JP2002151710A (ja) * | 2000-11-15 | 2002-05-24 | Kanegafuchi Chem Ind Co Ltd | 薄膜太陽電池の裏面封止方法 |
| JP2003282920A (ja) * | 2002-03-27 | 2003-10-03 | Kyocera Corp | 太陽電池モジュールの製造方法 |
| WO2004038811A1 (ja) * | 2002-10-25 | 2004-05-06 | Nakajima Glass Co., Inc. | 太陽電池モジュールの製造方法 |
| WO2009114189A2 (en) * | 2008-03-14 | 2009-09-17 | Dow Corning Corporation | Method of forming a photovoltaic cell module |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE876681A (fr) * | 1978-06-14 | 1979-11-30 | Bfg Glassgroup | Procede de fabrication d'un panneau comprenant au moins une cellule photovoltaique et panneau comprenant au moins une telle cellule |
| JPH0387515A (ja) | 1989-08-31 | 1991-04-12 | Toshiba Corp | 燃焼制御装置 |
| JPH04347454A (ja) | 1991-05-27 | 1992-12-02 | Matsushita Electric Ind Co Ltd | 電気温水器 |
| JP2001177119A (ja) | 1999-12-16 | 2001-06-29 | Canon Inc | 太陽電池モジュールの製造方法及び製造装置 |
| US20030000568A1 (en) * | 2001-06-15 | 2003-01-02 | Ase Americas, Inc. | Encapsulated photovoltaic modules and method of manufacturing same |
| JP4401649B2 (ja) * | 2002-12-13 | 2010-01-20 | キヤノン株式会社 | 太陽電池モジュールの製造方法 |
| JP2006134970A (ja) * | 2004-11-02 | 2006-05-25 | Mitsui Chemical Fabro Inc | 太陽電池封止用シート |
| JP2006190867A (ja) | 2005-01-07 | 2006-07-20 | Du Pont Mitsui Polychem Co Ltd | 太陽電池封止材 |
| CN101138095B (zh) * | 2005-03-08 | 2010-10-06 | 三井-杜邦聚合化学株式会社 | 太阳能电池密封材料 |
| JP4662151B2 (ja) * | 2005-11-29 | 2011-03-30 | 大日本印刷株式会社 | 太陽電池モジュール用充填材、およびそれを用いた太陽電池モジュール、ならびに太陽電池モジュール用充填材の製造方法 |
| JP2007317777A (ja) * | 2006-05-24 | 2007-12-06 | Fuji Electric Systems Co Ltd | 太陽電池モジュール、真空ラミネート装置および真空ラミネート方法 |
| EP2135298A1 (en) * | 2007-04-06 | 2009-12-23 | Solvay Solexis S.p.A. | Solar cell module |
| JP5158561B2 (ja) * | 2007-04-13 | 2013-03-06 | 日本電気硝子株式会社 | 積層体及びそれを用いた太陽電池 |
| WO2009029897A2 (en) * | 2007-08-29 | 2009-03-05 | Robert Stancel | Edge mountable electrical connection assembly |
| US20090260675A1 (en) * | 2008-04-18 | 2009-10-22 | Serkan Erdemli | Encapsulation of solar modules |
| JP5173921B2 (ja) | 2008-06-18 | 2013-04-03 | 京セラ株式会社 | 太陽電池モジュールのラミネータ |
| TW201025093A (en) | 2008-12-30 | 2010-07-01 | Ortek Technology Inc | Method of converting touch pad into touch mode or number-key and/or hot-key input mode |
| US20110139224A1 (en) * | 2009-12-16 | 2011-06-16 | Miasole | Oriented reinforcement for frameless solar modules |
-
2011
- 2011-07-08 WO PCT/JP2011/065729 patent/WO2012005367A1/ja active Application Filing
- 2011-07-08 CN CN201180031596.6A patent/CN102959727B/zh not_active Expired - Fee Related
- 2011-07-08 JP JP2012502043A patent/JP5247931B2/ja active Active
- 2011-07-08 KR KR1020137001004A patent/KR101493386B1/ko not_active Expired - Fee Related
- 2011-07-08 DE DE112011102313T patent/DE112011102313T5/de not_active Withdrawn
- 2011-07-08 US US13/808,412 patent/US20130102105A1/en not_active Abandoned
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001061763A1 (en) * | 2000-02-18 | 2001-08-23 | Bridgestone Corporation | Sealing film for solar cell and method for manufacturing solar cell |
| JP2002151710A (ja) * | 2000-11-15 | 2002-05-24 | Kanegafuchi Chem Ind Co Ltd | 薄膜太陽電池の裏面封止方法 |
| JP2003282920A (ja) * | 2002-03-27 | 2003-10-03 | Kyocera Corp | 太陽電池モジュールの製造方法 |
| WO2004038811A1 (ja) * | 2002-10-25 | 2004-05-06 | Nakajima Glass Co., Inc. | 太陽電池モジュールの製造方法 |
| WO2009114189A2 (en) * | 2008-03-14 | 2009-09-17 | Dow Corning Corporation | Method of forming a photovoltaic cell module |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013118361A1 (ja) * | 2012-02-07 | 2013-08-15 | シャープ株式会社 | 太陽電池モジュールの製造方法、及びラミネータ装置 |
| JPWO2013118361A1 (ja) * | 2012-02-07 | 2015-05-11 | シャープ株式会社 | 太陽電池モジュールの製造方法、及びラミネータ装置 |
| JP2014003170A (ja) * | 2012-06-19 | 2014-01-09 | Honda Motor Co Ltd | 太陽電池モジュールの封止方法および真空ラミネート装置 |
| JP2014017297A (ja) * | 2012-07-06 | 2014-01-30 | Sharp Corp | 光電変換モジュール及び光電変換モジュールの製造方法。 |
| CN110529807A (zh) * | 2012-08-03 | 2019-12-03 | 常州亚玛顿股份有限公司 | 太阳能照明系统 |
| JP2015039817A (ja) * | 2013-08-21 | 2015-03-02 | 北川精機株式会社 | プレス装置 |
| JP2016082006A (ja) * | 2014-10-14 | 2016-05-16 | 積水化学工業株式会社 | 太陽電池の製造方法 |
| JP2021518819A (ja) * | 2018-04-16 | 2021-08-05 | ボレアリス エージー | 多層積層体の製造方法 |
| US11884044B2 (en) | 2018-04-16 | 2024-01-30 | Borealis Ag | Process for producing a multilayer laminate |
| CN111081817A (zh) * | 2019-12-26 | 2020-04-28 | 吕晨康 | 一种太阳能电池板组件层压敷设装置 |
Also Published As
| Publication number | Publication date |
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| JP5247931B2 (ja) | 2013-07-24 |
| JPWO2012005367A1 (ja) | 2013-09-05 |
| CN102959727B (zh) | 2016-03-23 |
| KR20130050339A (ko) | 2013-05-15 |
| KR101493386B1 (ko) | 2015-02-13 |
| US20130102105A1 (en) | 2013-04-25 |
| CN102959727A (zh) | 2013-03-06 |
| DE112011102313T5 (de) | 2013-06-06 |
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