JP2001244489A - Method of manufacturing solar battery module and its installing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide the manufacturing method of a solar battery module, which can easily identify the history (a manufacturing condition or a type) of the solar battery module, and to provide the installing method. SOLUTION: At the time of manufacturing a solar battery module having a rear member 107, the solar battery modules are classified into at least two or above groups by the differences of a manufacture lot, a type and a manufacturing condition. The surface colors of the non-light receiving face sides of the rear members 107 are classified by different colors among the groups.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a solar cell module and a method for installing the same, and relates to a manufacturing lot,
The present invention relates to a method for manufacturing a solar cell module provided with an identification unit for identifying a model or manufacturing conditions, a method for installing the same, and a solar power generation system.

[0002]

2. Description of the Related Art At present, a rooftop-type system in which a flat panel-shaped solar cell module is installed on a roof has been put into practical use as a solar power generation system for houses.
Further, a system integrated with a roof building material has been developed for the purpose of reducing the price of the system and improving the beauty of the roof. In this roof building material integrated system, the solar cell module has the function of a roof building material.

[0003] As an example of such a solar cell module, a solar cell module disclosed in Japanese Patent Application Laid-Open No. 9-213983 is known. This describes a solar cell module and a solar cell module system in which a cable extends from a terminal portion in a solar cell module having at least two terminals and enables the solar cell module to be connected with short wiring. A connector is provided at the end of the cable, and is connected to the cable of the adjacent solar cell module by the connector. Thereby, many solar cell modules can be connected with short wiring.

Japanese Patent Application Laid-Open No. 9-92865 discloses a solar cell module having positive and negative terminal boxes provided independently of each other, the terminal boxes being separated from the center line of the solar cell module in opposite directions. And a solar cell module in which no part of the terminal box is on the center line. As a result, the packaging can be performed in a space-saving manner, the lead wire can be bent with a larger radius of curvature, and the connection can be easily performed.

[0005]

Problems to be Solved by the Invention
In the case of a solar cell module having at least two types of terminals as disclosed in Japanese Patent No. 983, it is necessary to identify the two types of polarities. When checking the polarity, it is inconvenient and time-consuming to check the connector part of the solar cell module. In the unlikely event that the polarity is set incorrectly, it is necessary to start over. Further, JP-A-9-928
In a module such as that disclosed in Japanese Patent Publication No. 65, when manufacturing and installing a solar cell module, since the shape of the solar cell module is constant, it is difficult to determine the position of the terminal box on the positive or negative side of the solar cell module. In addition, mistakes were likely to occur. Furthermore, in packing and storage work,
There is also a problem that it is difficult to classify by production lot or production condition.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described circumstances, and allows a solar cell module to be accurately identified by easily confirming a manufacturing lot, a model, or a classification of manufacturing conditions. The purpose is to achieve manufacturing, classification, or installation to improve workability.

[0007]

According to a method of manufacturing a solar cell module of the present invention, in a method of manufacturing a plurality of solar cell modules having a back surface member, the solar cell module is manufactured using a manufacturing lot, a model, and manufacturing conditions. At least two or more groups are classified according to any difference, and the surface color of the non-light-receiving surface side of the back surface member is classified into different colors between the groups. In this case, for each of the classified groups, the color of the sheet on which the information of the manufacturing lot, the model, and the manufacturing conditions are recorded may be the same as the surface color of the non-light-receiving surface of the back surface member of the solar cell module. preferable.

Further, according to the method for manufacturing a solar cell module of the present invention, in the method for manufacturing a plurality of solar cell modules having a back member, the solar cell modules are classified into at least two or more groups based on inspection results. The color of the paper on which the information on the inspection result is recorded and the surface color of the non-light-receiving surface of the back surface member of the solar cell module are made the same color for each group.

Further, in the method for manufacturing a solar cell module according to the present invention, in the method for manufacturing a plurality of solar cell modules having a back member, the solar cell modules are grouped into at least two or more groups based on quantity management information. Classify,
The color of the sheet on which the quantity management information is recorded and the surface color of the non-light-receiving surface side of the back surface member of the solar cell module are set to the same color for each of the classified groups.

The method for manufacturing a solar cell module according to the present invention further has a feature that “the solar cell module has a terminal portion on the non-light receiving surface side”, and “the solar cell module has the terminal portion. Arrange a plurality of pieces "," The back surface member uses metal or resin material "
That is, including.

The present invention also relates to a method for installing a series body in which a plurality of solar cell modules are connected in series to obtain a desired voltage, wherein the solar cell module manufactured by the manufacturing method of the present invention is provided. In addition, a solar cell module having a different color on the non-light-receiving surface side is provided for each column.

[0012]

According to the present invention, the solar cell modules are classified into at least two or more groups according to any one of a manufacturing lot, a model, and manufacturing conditions, and the surface color on the non-light receiving surface side of the back surface member is classified by different colors between the groups. This makes it easy to identify solar cell modules between different manufacturing lots, types, and manufacturing conditions from the back side of the solar cell module, so the manufacturing lot, model, or manufacturing conditions can be easily checked during manufacturing. it can. As a result, manufacturing errors can be reduced. In particular, by making the color of the paper for recording the information of the production lot, model, and production conditions and the surface color of the non-light-receiving surface side of the back surface member of the solar cell module the same color for each of the classified groups, , Model, or manufacturing conditions can be checked very easily, and errors in the manufacturing process can be easily prevented.

Further, the solar cell modules are classified into at least two or more groups according to the inspection results or the quantity management information, and for each of the classified groups, the color of the paper on which the information of the inspection results is recorded and the solar cell module By making the same color as the surface color on the non-light-receiving surface side of the back member, it is easy to check the inspection results or quantity management during manufacturing, transport / packing, etc., and reduce manufacturing errors and transport / packing errors. be able to.

Further, by providing the terminal portion on the non-light receiving surface side, the terminal portion is protected from the outside, the weather resistance of the cable and the connector is prevented from deteriorating, and no external force is applied to the connector connection portion, so that the reliability can be further improved. it can. Moreover,
The appearance of the solar cell module after construction is also excellent.

Further, by providing a plurality of terminals by separately providing the terminals of the positive electrode and the negative electrode, for example, when the terminals of the positive electrode and the negative electrode are separately located at both ends of the long solar cell module, In serializing them, the length of the cable required for connecting the adjacent positive electrode and negative electrode is short.
Since the wires are connected near the joints of the solar cell modules, the wires can be connected while being constructed, and the workability is improved.

Further, by using a metal or resin material for the back surface member, the solar cell module can be easily formed by plastic working such as bending, and the metal plate has sufficient mechanical strength. The battery module can be formed three-dimensionally by bending. Further, since the metal and resin material plates have flexibility, they can be curved and fixed in some cases, and can be adapted to various installation forms.

Further, in a method of installing a series body in which a plurality of solar cell modules are connected in series to obtain a desired voltage, the solar cell modules manufactured by the above-described manufacturing method are used to alternately arrange each of the columns. By installing photovoltaic modules with different colors on the non-light-receiving surface side, when installing, the colors are unified according to the columns, so that the classification and identification of the photovoltaic modules becomes easy, and work errors can be reduced. Therefore, it is possible to improve work efficiency.
In addition, after installation, the non-light-receiving surface side of the solar cell module is hidden, so that the appearance is not impaired.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the present invention, a color of a non-light-receiving surface of a back surface member is determined in a manufacturing stage according to a manufacturing lot, a model, manufacturing conditions, inspection results, quantity control information, and the like. The difference is facilitated by the type of the solar cell module or the like.

Hereinafter, embodiments of a method for manufacturing a solar cell module and a method for installing the same according to the present invention will be described with reference to the drawings, but the present invention is not limited to this example.

The structure of a solar cell module having a back member according to the present invention will be described with reference to FIG.

In order to cover the light-receiving surface of the photovoltaic element, it is general to prepare a sheet-shaped transparent polymer resin and heat-press it on the front and back of the element. The laminated structure at the time of producing the solar cell module includes a photovoltaic element 101, a fibrous inorganic compound 102, a transparent polymer compound 103, a resin film 104, a back filler 105, an insulating film 106,
The back member 107 is laminated in the order shown in the drawing or in the reverse order, and is heat-pressed to obtain a solar cell module 108. The back surface member 107 having a different color on the non-light receiving surface side due to a difference in the manufacturing lot, model, manufacturing conditions, etc. of the solar cell module at the time of stacking
Is provided.

The heating temperature and the heating time at the time of press bonding are determined by the temperature and time at which the crosslinking reaction sufficiently proceeds.

A method for manufacturing a solar cell module having a back member according to the present invention will be described with reference to specific examples.

[Method of Manufacturing Photovoltaic Element] The photovoltaic element is obtained by forming a semiconductor photoactive layer as a light conversion member and a transparent conductive layer on a conductive substrate. As a configuration,
For example, as shown in FIG. 2, the substrate includes a conductive substrate 201, a back reflection layer 202, a semiconductor photoactive layer 203, a transparent conductive layer 204, a collecting electrode 205, and an output terminal 206.

The conductive base 201 serves as a base for the photovoltaic element and also serves as a lower electrode. Materials include silicon, tantalum, molybdenum, tungsten,
Stainless steel, aluminum, copper, titanium, carbon sheet, galvanized steel sheet, and a resin film or ceramic having a conductive layer is formed.

On the conductive substrate 201, the back reflection layer 2
As 02, a metal layer, a metal oxide layer, or a metal layer and a metal oxide layer may be formed. In the metal layer,
For example, Ti, Cr, Mo, W, Al, Ag, Ni, or the like is used. For the metal oxide layer, for example, ZnO, Ti
O ₂ , SnO ₂ or the like is used. Examples of a method for forming the metal layer and the metal oxide layer include a resistance heating evaporation method, an electron beam evaporation method, and a sputtering method.

The semiconductor photoactive layer 203 is a portion where photoelectric conversion is performed, and specific examples of the material include pn junction type polycrystalline silicon, pin junction type amorphous silicon, and Cu.
InS ₂ , CuInS ₂ , GaAs, CdS / Cu ₂ S,
CdS / CdTe, CdS / InP, CdTe / Cu ₂
And compound semiconductors such as Te. The semiconductor photoactive layer may be formed by forming a sheet of molten silicon or heat-treating amorphous silicon in the case of polycrystalline silicon, plasma CVD using silane gas or the like in the case of amorphous silicon, or ion plating in the case of a compound semiconductor. Ing, ion beam deposition,
There are a vacuum deposition method, a sputtering method, an electrodeposition method and the like.

The transparent conductive layer 204 functions as an upper electrode of the solar cell. As a material to be used, for example, I
_{n 2 O 3, SnO 2,} In 2 O 3 -SnO 2 (ITO), Zn
There are O, TiO ₂ , Cd ₂ SnO ₄ , and a crystalline semiconductor layer doped with a high concentration of impurities. Examples of the formation method include resistance heating evaporation, sputtering, spraying, CVD, and impurity diffusion.

On the transparent conductive layer 204, in order to efficiently collect current, a grid-like current collecting electrode (grid) 205
May be provided. As a specific material of the current collecting electrode 205, for example, Ti, Cr, Mo, W, Al, Ag, N
i, Cu, Sn or silver paste.
As a method for forming the current collecting electrode 205, sputtering using a mask pattern, resistance heating, a CVD method, a method in which an unnecessary portion is removed by etching after depositing a metal film on the entire surface and patterning is performed, or a grid directly formed by photo CVD. There are a method of forming an electrode pattern, a method of plating after forming a negative pattern mask of a grid electrode pattern, and a method of printing a conductive paste. The conductive paste 207 is usually a fine powder of silver, gold, copper, nickel, carbon, or the like as a binder polymer, for example, a resin such as polyester, epoxy, acrylic, alkyd, polyvinyl acetate, rubber, urethane, or phenol. No.

Finally, a positive output terminal and a negative output terminal are attached to the conductive substrate 201 and the current collecting electrode 205 to extract an electromotive force. A method of joining a metal body such as a copper tab to the conductive substrate by spot welding or solder is used, and a method of electrically connecting the metal body to the current collecting electrode by a conductive paste or solder is used. Note that it is preferable that an insulating layer 208 be provided in order to prevent the output terminal from coming into contact with the conductive metal substrate or the semiconductor layer to cause a short circuit when being attached to the current collecting electrode.

[Photovoltaic Element Connection Method] The photovoltaic elements used in the present invention are connected in series or in parallel according to a desired voltage or current. In the case of series connection, the positive and negative sides of the output terminal are connected, and in the case of parallel connection, both poles are connected. Alternatively, a desired voltage or current can be obtained by integrating a photovoltaic element on an insulated substrate. Soldering method as a connection method of the photovoltaic element,
There are a laser welding method and an ultrasonic welding method.

[Modularization] When impact resistance and bendability are required, a metal substrate such as stainless steel is used as the substrate. In addition, in order to reduce the weight of the photovoltaic elements formed on the stainless steel substrate, maintain the bendability, and provide weather resistance and impact resistance, these photovoltaic elements are made of fluororesin or ethylene vinyl acetate ( It is sealed with a resin such as EVA). After the photovoltaic element is sealed with resin, the end of the resin-sealed photovoltaic element is protected by a metal such as aluminum, polyvinyl chloride, It is covered with a protective frame made of a polymer resin such as rubber. In particular, when the solar cell module is required to have flexibility, a flexible polymer resin such as synthetic rubber or soft polyvinyl chloride is usually used. Then, in order to fix the end portion of the resin-sealed photovoltaic element and a protective frame such as a polymer resin for protecting the end portion, the contact surface is subjected to a plasma treatment, a strong acid, a strong alkali, or the like. After processing to make it easier to bond, it is bonded with an adhesive to make a module.

Next, a method of classifying solar cell modules in the manufacturing method of the present invention will be described.

[Method of Classifying Solar Cell Modules] The classification of the solar cell modules in the present invention is performed based on inspection results such as manufacturing lot, model, manufacturing conditions, quality, etc., and quantity management information.

Examples of the model include a size, a shape, an installation position of a terminal portion, a constituent material, a series-parallel number of solar cells, a rated value,
Differences such as the type of solar cell are given. Manufacturing conditions include, for example, differences in manufacturing lot lines, manufacturing equipment, manufacturing locations, and the like.

The classification based on the production lot, model, production condition, and quantity management information is usually performed by using a back surface member of a color corresponding to the classification in advance when laminating each member of the solar cell module as shown in FIG. It can be carried out. On the other hand, classification based on inspection results such as quality is usually performed by performing quality inspection such as output characteristics performed at the final stage of the manufacturing process, and then coloring the non-light receiving surface side surface of the back member to a color according to the inspection result. Can be done.

[Coloring method] As a coloring method for the back surface member in the present invention, a casting method, an injection molding method, a spray coating method, a colored seal attaching method, a colored film attaching method, a shot blast method, a color toner method, etc. There is.

Next, the structure of the covering material of the solar cell module used in the present invention will be described in detail.

As shown in the sectional view of FIG. 1, the solar cell module 108 includes a photovoltaic element 101, a fibrous inorganic compound 102, a transparent organic polymer compound 103, a transparent resin film 104 located on the outermost surface, Backside filler 10
5. The structure of the back surface insulating film 106 and the back surface member 107 is provided.

It is desirable that the fibrous inorganic compound 102 does not exist in the bent portion of the solar cell module. When the fibrous inorganic compound 102 exists in the bent portion,
Whitening occurs, leading to a decrease in reliability. It is desirable that the thickness of the bent portion is small. From this point as well, it is desirable that only the surface resin film 104 and the transparent organic polymer resin 103 be covered at the bent portion, and that the other covering material be of a minimum size capable of exhibiting the respective effects.

FIG. 3 shows a method of forming a roof material with a flat solar cell by using the photovoltaic element, the filler, the surface resin film, the back surface coating material, and the back surface member described above, and bending the edges.
This will be described with reference to FIG.

[Bending] The end 302 of the solar cell module 108 (301) produced by the above method is bent. Such bending is desirably performed by a press molding machine, a roller former molding machine, a bender bending molding machine, or the like.

The press molding machine is suitable for processing of building materials and the like, since any shape can be easily processed by first forming a mold even when processing having an irregular shape. In the molding by pressing, the upper and lower dies are processed with the solar cell interposed therebetween. Here, if a large pressure is applied to the photovoltaic element, the photovoltaic element will be damaged, and the reliability as a solar cell will be problematic. Therefore, it is desirable to use the following method as a method of reducing the pressure. First, a method is used in which a curved portion is formed by applying pressure only to a reinforcing plate of a solar cell module without a photovoltaic element and plastically deforming a part or all of the reinforcing plate. Thereby, processing can be performed without touching the photovoltaic element at all. The other is to provide a sheet of rubber, urethane, foam, nonwoven fabric, polymer resin, or the like as a cushioning material between the press mold and the solar cell module. Thereby, since the pressure of the press die can be dispersed, the pressure on the photovoltaic element can be reduced. Further, a method of providing a gap between the solar cell module and the processing machine at the lower fulcrum of the press is also effective. That is, without applying pressure to the entire solar cell module,
Can be processed. Since the step of forming the curved portion is performed by press molding, workability is improved. Since this is a commonly used method of processing a steel sheet, it is possible to easily perform the processing.

Roller former molding is a molding method in which a steel sheet is passed through a molding machine equipped with rollers of several different shapes to sequentially perform bending. According to this method, the processing speed is faster than that of a method such as bending of a bender, and the mass productivity is excellent. In this case, the conveying method of the roller former molding machine used is 1 m / min.
About 30 m / min is desirable. If it is 1 m / min or less, productivity is poor. On the other hand, when the speed is 30 m / min or more, the coating material is easily damaged, and the yield is deteriorated.
In addition, when the roll of the feed roll of the roller former molding machine hits a convex portion such as on a current collecting electrode of a solar cell module, pressure is locally applied only to that portion, and the surface may be damaged.

The roller former molding machine is excellent in processing in the longitudinal direction. The same molding machine can handle steel plates of different lengths. In particular, it is a method that can cope with bending of a long steel plate and complicated bending and can be processed at a high speed, and thus has a high mass productivity. Again, in order to reduce the pressure on the photovoltaic element, wrap a sheet of rubber, urethane, foam, non-woven fabric, polymer resin, etc. as a cushioning material around the roller used for the roller former. Is preferred.

The bender bending machine can bend with a simple device. It is effective for simple bending and bending of relatively small steel plates. However, since the radius of curvature of the blade of a bender is usually small, pressure is concentrated when performing bending on a photovoltaic element. Therefore, in order to reduce this, it is desirable to use a buffer between the blade of the bender and the solar cell module. As the cushioning material, a sheet of rubber, urethane, foam, nonwoven fabric, polymer resin, or the like is preferable as described above. Further, as another means, the radius of curvature of the blade of the bender may be set to 100 mm or more. Since the step of forming the curved portion is performed by bender bending, the curved portion can be formed by an inexpensive and easy method. It is particularly effective for processing a short solar cell module.

[0047]

EXAMPLES The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples.

Embodiment 1 A case will be described in which a roof material-integrated amorphous solar cell module is manufactured using a back member having a different color on the non-light-receiving surface side depending on the type.

[Method of Manufacturing Photovoltaic Element] First, an amorphous silicon (a-Si) solar cell (photovoltaic element)
To produce The creation procedure will be described with reference to FIG.

An Al layer (thickness: 5000 °) and a ZnO layer (thickness: 500 °) as a back reflection layer 402 were formed on a cleaned coil-shaped stainless substrate 401 having a width of 340 mm by sputtering.
0 °) were sequentially formed. Then, the n-type a-Si was obtained from a mixed gas of SiH ₄ , PH ₃ and H ₂ by a plasma CVD method.
The i-type a-Si layer was formed from a mixed gas of SiH ₄ and H ₂ .
From the mixed gas of SiH ₄ , BF ₃ and H ₂ , p-type microcrystal μC-
An Si layer is formed and an n-layer thickness of 150 ° / i-layer thickness of 4000
Å / p layer thickness 100Å / n layer thickness 100Å / i layer thickness 8
Tandem type aS having a layer configuration of 00 / p layer thickness of 100
An i-photoelectric conversion semiconductor 403 was formed. Then, as the transparent electrode layer 404, an In ₂ O ₃ thin film (film thickness 700 Å), O ₂
It was formed by vapor deposition of In by a resistance heating method in an atmosphere.

Next, the formed stainless steel substrate is
The photovoltaic element is cut so as to be 0 mm. First, the photovoltaic element was immersed in an aqueous solution of 8% aluminum chloride hexahydrate, and was 1 mm narrower and 1 mm smaller than the photovoltaic element.
The counter electrode patterned by the width was opposed to the transparent electrode layer of the photovoltaic element by 1 mm, and a direct current of 0.5 A and 25 A was applied by a sequence controller to form a photovoltaic element separating section 409. Next, the opposite pole is replaced with a photovoltaic element of the same size stainless steel plate electrode,
The transparent electrode layer at the short-circuited portion generated at the time of film formation is removed by applying a bias of 4.5 V with a sequence controller by facing the device at a distance of 4.0 cm. Thereafter, washing and drying were performed with water to form a photovoltaic element in which the short-circuit portion was repaired.

A current collecting electrode 405 is formed on the photovoltaic element in which the short-circuited portion has been repaired as described above. Finally, a copper tab is attached to a stainless steel substrate as a negative electrode bus bar electrode 406b by using solder. A tin foil tape was attached to the current collecting electrode 405 and used as an output terminal to obtain a photovoltaic element.

[Classification of Photovoltaic Elements] For each of the above photovoltaic elements, 0.1 mW / cm ² (about 200 L
The open-circuit voltage value under the incident intensity of X) was measured. And
If the open-circuit voltage value is less than 0.5 V, it will be out of specification.
Those having a voltage of 0.5 V to 0.9 V were classified as Group B, and those having a voltage of 0.9 V or more were classified as Group A.

[Photovoltaic Element Connection (Construction of Photovoltaic Element Module)] A method of making a photovoltaic element module by connecting the photovoltaic elements of the groups A and B in six series with reference to FIG. Will be explained.

Three photovoltaic elements 501 are prepared from groups A and B, and are alternately arranged in a horizontal line. afterwards,
Positive bus bar electrode 5 of one of the adjacent elements
03a and the negative electrode busbar electrode 503b of the other element are connected by using a brazing agent (solder) 505 and a serial member 504. Thus, the six elements are serialized to create a photovoltaic element module. The copper tab connected to the bus bar electrode of the end element is turned to the back surface, a copper tab of an appropriate length is attached, and a back surface electrode take-out portion is provided so that output can be taken out from the hole of the back surface sealing material described later. (Not shown).

[Construction of Solar Cell Module] A method of producing a solar cell module by covering the above-mentioned element module will be described with reference to FIG.

In the present invention, a back member having a different color on the non-light receiving surface side is used as means for classifying the type of the solar cell module.

Specifically, a solar cell module having a positive terminal on the right side has a back surface member with a blue color on the non-light receiving surface side,
A solar cell module having a positive terminal on the left side is provided with a back surface member whose color on the non-light receiving surface side is red.

^3. Photovoltaic element module 601, basis weight 40 g / m ² , thickness 200 μm, binder acrylic agent
0% content, surface protection reinforcing material 602 of glass fiber non-woven fabric having a wire diameter of 10 μm and a fiber length of 13 mm, an ethylene-vinyl acetate copolymer (25% by weight of vinyl acetate) as a sealing material, a cross-linking agent, an ultraviolet absorber, an antioxidant 460-μm EVA sheet 603 formulated by mixing an agent and a light stabilizer, an unstretched ethylene-tetrafluoroethylene film (ETF
E) Prepare 50 μm. The surface in contact with the sealing material resin is a translucent surface member 604 that has been subjected to plasma processing in advance,
As a sealing material layer, an ethylene-vinyl acetate copolymer (25% by weight of vinyl acetate, thickness of 225 μm) as a prescription and a biaxially stretched polyethylene terephthalate film (PET) (100 μm in thickness) as an insulating material, EVA / PE
Insulating material 605 with a double-sided sealing material and a galvalume steel plate (55% aluminum, 43.4% zinc, and 1.6% silicon integrated with T / EVA) A rear member 606 of a steel plate (thickness: 400 μm) coated with a polyester-based paint on one side and a polyester-based paint with glass fiber added on the other side is prepared on a zinc alloy-plated steel sheet, and these are laminated in the order of FIG. did.

The laminate was vacuum-heated using a single vacuum laminating apparatus to produce a flat solar cell module. The vacuum conditions at that time are as follows: pumping speed: about 10 ⁴ Pa / s
ec, evacuation was performed at a degree of vacuum of 6.7 × 10 ² Pa for 30 minutes. Thereafter, the laminating apparatus is put into a hot air oven at 160 degrees and heated for 50 minutes. At this time, the sealing material resin (EVA)
Is placed in an environment of 140 degrees or more and 15 minutes or more.
Thereby, EVA is melted and crosslinked.

[End bending] Next, as shown in FIG.
Photovoltaic element module 6 with bender bending machine
01 of solar cell module 701 not including
Was bent. At this time, the photovoltaic element module 601 was molded so that the blade or the like of the bender did not hit the part.

When manufacturing the solar cell module according to the present embodiment, it is easy to distinguish between different types from the back side of the solar cell module, so that the type can be easily confirmed and manufacturing errors can be reduced. And workability can be improved. In addition, after the installation is completed, the surface of the back surface member on the non-light receiving surface side is concealed, so that the appearance of the solar cell module is not spoiled.

(Example 2) In this example, a flat-panel solar cell module manufactured in the same manner as in Example 1 was subjected to a predetermined bending process at the end, and 16 solar cell modules integrated with a roof material were connected in series in one string. An example in which an array in which five strings are connected in parallel will be described.

In this embodiment, as shown in the construction sectional view of FIG. 8, a base plate 802 is laid on a rafter 801 and a base plate 802 is provided.
Asphalt roofing 803 was adhered on the upper side for waterproofing, a pier 804 serving as a gantry was installed on the asphalt roofing 803, and the roofing-integrated solar cell module 805 was fixed on the pier 804 with fixing brackets 806.

FIG. 9 shows a gable-shaped roof 904 and a roof having a positive terminal at the right end using a back surface member whose surface on the non-light-receiving surface is blue at the first and third stages in one string 901. The roof-integrated solar cell module 903 having a positive terminal at the left end using a back surface member whose surface on the non-light receiving surface side is red is provided in the second and fourth stages. It is the figure which was installed.

As described above, the color of the back surface member is different depending on the type of the solar cell module, and the color is unified depending on the stage when the solar cell module is installed. Therefore, the polarity of the solar cell module can be easily identified, and the operation error can be eliminated. Work efficiency can be improved. In addition, since the non-light-receiving surface side of the solar cell module is hidden after the completion of the construction, there is no problem in appearance of the solar cell module.

(Embodiment 3) In this embodiment, in the quality inspection after manufacturing the solar cell module, the solar cell modules are classified according to the difference in the output characteristics, and the information of the inspection result is recorded for each classified group. This is an example of a roofing material-integrated amorphous solar cell module in which the color of paper and the surface on the non-light-receiving side of the back surface member of the solar cell module are the same color.

In this example, a flat solar cell module manufactured in the same manner as in Example 1 except that a back member not colored was used was subjected to a predetermined end bending process to obtain a roof material-integrated solar cell module. Produced.

Then, as shown in FIG. 10, in the quality inspection after the completion of the modularization, the color on the non-light receiving surface side of the back surface member is color sprayed in accordance with the maximum output of the roof material integrated solar cell modules 1001 and 1002. And the same color as the color of the papers 1005 and 1006 for recording the information of the solar cell module.

In this embodiment, the recording paper 1 of the information of the solar cell module having the maximum output of 60 W or more and less than 64 W is used.
Blue paper was used for 005, and red paper was used for the recording paper 1006 of the information of the solar cell module having the maximum output of 64 W or more. In the solar cell module 1001 having a maximum output of 60 W or more and less than 64 W, the non-light receiving surface side surface of the back member 1003 is colored blue, and in the solar cell module 1002 having a maximum output of 64 W or more, the non-light receiving surface side of the back member 1004. Was colored red.

In the solar cell module according to the present embodiment, the output performance of the solar cell module can be easily checked at the time of transportation, packing, installation, and the like, and particularly, the speed of packing and shipping for each output performance is improved. It is possible to do. Further, at the time of construction, it is possible to reduce the variation in power between modules. In addition, after the application, the non-light receiving surface side surface portion of the back member is concealed, so that the appearance is not impaired.

(Embodiment 4) In this embodiment, the solar cell modules are classified based on the quantity management information in the production of a large number of solar cell modules, and each group is classified into
This is an example of a roofing material-integrated amorphous solar cell module in which the color of the paper on which the quantity management information is recorded and the surface color on the non-light receiving surface side of the back surface member of the solar cell module are the same.

In the present embodiment, the flat solar cell module manufactured in the same manner as in Embodiment 1 except that the back member of the same color as the color of the paper for recording the quantity management information is used is subjected to a predetermined end bending process. A roof material integrated solar cell module was fabricated. The sheet for recording the quantity management information was attached to the module with a tape or the like so that it could not be easily removed after the completion of the modularization in the manufacturing stage.

More specifically, as shown in FIG. 11, the first to less than 100th solar cell modules 110
1, a blue recording paper 1105 and a back surface member 1103 having a blue non-light receiving surface side are used, and a red recording paper 1106 and a back surface member 1104 having a red non-light receiving surface side are provided for the solar cell modules 1102 of the 101st to less than 200th sheets. Using.

In the solar cell module according to the present embodiment, the number of the solar cell modules can be easily controlled at the time of manufacture, transportation, packing, and the like, so that manufacturing errors can be reduced, and speed at the time of packing and shipping can be reduced. Can be improved. In addition, after the application, the non-light receiving surface side surface portion of the back member is concealed, so that the appearance is not impaired.

(Embodiment 5) In this embodiment, in the same manufacturing method as in Embodiment 1, the solar cell modules are classified according to the difference between the manufacturing lots, and the information on the manufacturing lot is recorded for each of the classified groups. This is an example of a roofing material-integrated amorphous solar cell module in which the color of the paper and the surface color of the non-light-receiving surface side of the back surface member of the solar cell module are the same.
The paper for recording the production lot was attached to the solar cell module with a tape or the like so that it could not be easily taken off after the module was formed in the production stage.

More specifically, as shown in FIG. 12, a blue recording paper 120
5 and a non-light-receiving surface side using a blue back surface member 1203, and a red recording paper 1206 and a non-light-receiving surface side using a red back surface member 1204 for the second lot of solar cell modules 1202.

In the solar cell module according to the present embodiment, it is easy to control the manufacturing lot of the solar cell module at the time of manufacturing, transportation, packing, and the like, and it is possible to reduce manufacturing errors, and particularly to speed up packing and shipping. Can be improved. In addition, after the application, the non-light receiving surface side surface portion of the back member is concealed, so that the appearance is not impaired.

[0079]

According to the method for manufacturing a solar cell module and the method for installing the same of the present invention, the following effects can be obtained.

(1) Conventionally, when a solar cell module is manufactured, a manufacturing lot, a model, or manufacturing conditions are checked,
Since it was necessary to check the recording paper etc., it took time to check it, but to make it easy to distinguish between production lots, models, or manufacturing conditions, the color of the non-light receiving surface side of the back member is made different. Thereby, the time required for checking the solar cell module during manufacturing can be shortened, so that productivity can be improved and manufacturing errors can be reduced.

(2) Since the non-light-receiving surface side of the back surface member has a different color depending on the manufacturing lot, model, or manufacturing condition of the solar cell module, manufacture, installation, and packing are facilitated. At the time of manufacturing or construction, electrical wiring can be facilitated and workability can be improved.

(3) The surface of the back surface member of the solar cell module on the non-light-receiving surface side is concealed after construction, so that the construction can be carried out without damaging the appearance of the solar cell module.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view schematically illustrating a stacked configuration of members constituting a solar cell module having a back surface member described in an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram of a photovoltaic element in which a semiconductor photoactive layer as a light conversion member and a transparent conductive layer are formed on a conductive substrate described in an embodiment of the present invention.

FIG. 3 is a perspective view of a solar cell module in which an end portion of the solar cell module described in the example of the embodiment of the present invention is subjected to a bending process by a roller former process.

FIG. 4 is a schematic configuration diagram of a photovoltaic device in which a semiconductor active layer as a light conversion member and a transparent conductive layer are formed on the conductive substrate described in Example 1 of the present invention.

FIG. 5 is a schematic configuration diagram of a photovoltaic element module in which the photovoltaic elements described in Embodiment 1 of the present invention are connected in series.

FIG. 6 is a schematic configuration diagram of a coated solar cell module described in Example 1 of the present invention.

FIG. 7 is a view in which an end of a solar cell module not including a photovoltaic element module is bent by the bender bending machine described in Example 1 of the present invention.

FIG. 8 is a view in which the solar cell module described in Example 2 of the present invention is installed on a roof as a roof material-integrated solar cell module.

FIG. 9 is a view showing a roof material-integrated solar cell module described in Example 2 of the present invention, which is provided with a discriminating means based on a difference in color on a non-light receiving surface side of a back surface member, and is installed on a gable roof.

FIG. 10 is a diagram of a solar cell module in which the color of the non-light-receiving surface side of the back surface member is changed according to the difference in the maximum output described in the third embodiment of the present invention and a recording sheet provided with the same color. .

FIG. 11 is a diagram in which the same color as a sheet for recording quantity management information is provided on the non-light-receiving side surface of the back surface member of the solar cell module described in Embodiment 4 of the present invention.

FIG. 12 is a diagram in which the same color as the paper for recording the production lot is provided on the surface on the non-light-receiving side of the back surface member of the solar cell module described in Embodiment 5 of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 101,501 Photovoltaic element 102 Fibrous inorganic compound 103 Transparent high molecular organic compound 104 Resin film 105 Filler 106 Insulating film 107,606 Back member 108,301,701 Solar cell module 201 Conductive base 202,402 Back reflection layer 203 Semiconductor photoactive layer 204, 404 Transparent conductive layer 205, 405 Current collecting electrode 206 Output terminal 207, 407 Conductive paste 208, 408, 502 Insulating layer 209, 409 Photovoltaic element separation part 302, 702 End 401 Stainless steel Substrate 403 Tandem-type a-Si photoelectric conversion semiconductor 406, 503 Busbar electrode 504 Series member 505 Brazing agent 601 701 Photovoltaic element module 602 Surface protection / enhancing agent 603 EVA sheet 604 Translucent surface member 605 Insulation material 8 Reference Signs List 1 rafter 802 field board 803 asphalt roofing 804 crosspiece 805 solar cell module 806 fixing bracket 901 1 string 902 solar cell module having a positive terminal on the right end 903 solar cell module having a positive terminal on the left end 904 gable roof 1001 maximum output is 60W A solar cell module having a maximum output of 64 W or more 1003, a solar cell module having a maximum output of 64 W or more 1003, 1103, and 1203 a back surface member having a blue non-light receiving surface side surface 1004, a 1104, and a 1204 rear surface member having a non-light receiving surface side red color 1005 1105, 1205 Blue recording paper 1006, 1106, 1206 Red recording paper 1101 1st to less than 100th solar cell module in manufacturing order 1102 Thickness from 101st to less than 200th manufacturing order Solar cell module of the battery module 1201 production lot solar cell module 1202 production lot of the first lot and the second lot

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masahiro Mori 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Meiji Takabayashi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Co., Ltd. F-term (reference) 5F051 BA03 BA11 EA01 EA20 JA02

Claims (8)

[Claims] In a method of manufacturing a plurality of solar cell modules having a back member, the solar cell modules are classified into at least two or more groups according to any one of a manufacturing lot, a model, and a manufacturing condition, A method for manufacturing a solar cell module, wherein the surface color of the non-light-receiving surface side of the back surface member is classified into different colors between the groups. 2. The color of a sheet for recording information of the production lot, model, and production conditions and the surface color of the non-light-receiving surface side of the back surface member of the solar cell module are set to the same color for each group. The method for manufacturing a solar cell module according to claim 1, wherein: 3. A method for manufacturing a plurality of solar cell modules having a back surface member, wherein the solar cell modules are classified into at least two or more groups based on an inspection result, and for each of the classified groups, A method for manufacturing a solar cell module, wherein a color of a sheet on which information of an inspection result is recorded and a surface color on a non-light receiving surface side of a back surface member of the solar cell module are made the same. 4. In a method for manufacturing a plurality of solar cell modules having a back surface member, the solar cell modules are classified into at least two or more groups based on quantity management information, and for each of the classified groups, A method for manufacturing a solar cell module, wherein a color of a sheet on which the quantity management information is recorded and a surface color on a non-light receiving surface side of a back surface member of the solar cell module are made the same. 5. The method of manufacturing a solar cell module according to claim 1, wherein the solar cell module has a terminal portion on a non-light receiving surface side. 6. The method according to claim 5, wherein the solar cell module includes a plurality of the terminal portions. 7. The method for manufacturing a solar cell module according to claim 1, wherein the back surface member is made of a metal or a resin material. 8. A method for installing a series body configured to obtain a desired voltage by connecting a plurality of solar cell modules in series, wherein the solar cell manufactured by the manufacturing method according to claim 1 is provided. A method for installing a solar cell module, comprising using a module to install solar cell modules having different colors on a non-light receiving surface side for each column.