JPH11214734A - Solar battery module, its manufacture and execution method and solar battery power generation system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent filler from overflowing to outside from output terminal parts by resin-encapsulating a photoelectromotive force element on a reinforcing material, providing a plurality of output terminals which are not arranged being flush with the nonlight-receiving face side of the reinforcing material, and providing output terminal parts at same inclinations. SOLUTION: Terminal boxes 805 are fitted to a solar battery module back 801 as output terminal parts. A solar battery module is placed on a stand 809 so that all terminal parts become parallel to a floor to fit them. The bonding direction of the terminal boxes 805 is one in which a cable with connector turns to a ridge-side. The terminal boxes 805 are fitted with the same inclinations at a roofed integrated solar battery module worked into a waveform. Thus, the inclinations of all the terminal boxes 805 can be made parallel to the floor by adjusting them to the inclinations. The same inclinations are given to the output terminal parts which are not arranged being flush with each other so as to keep an angle parallel to the floor. Then, filler is prevented from swelling outside.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a solar cell module in which a photovoltaic element is resin-sealed on a reinforcing material.

[0002]

2. Description of the Related Art In recent years, awareness of protection of energy resources and environmental issues has been increasing worldwide. Above all, there is a deep concern about the depletion of petroleum and the like and the global warming phenomenon associated with CO2 emissions. Therefore, solar cell energy, which can directly convert solar energy into electric power and is clean energy, has been greatly expected.

The types of solar cells widely used at present include those using crystalline silicon and those using amorphous silicon.

[0004] In particular, an amorphous silicon solar cell in which silicon is deposited on a conductive metal substrate and a transparent conductive layer is formed thereon is cheaper and lighter than a solar cell using crystalline silicon, and has a high impact resistance. It is promising because of its richness and flexibility. Recently, it has been installed on roofs and walls of buildings, taking advantage of the characteristics of amorphous silicon solar cells, such as light weight, excellent impact resistance, and flexibility. In this case, the non-light-receiving surface side of the solar cell is used as a building material by bonding a reinforcing material via an adhesive. By bonding the reinforcing material in this manner, the mechanical strength of the solar cell module is increased, and warpage and distortion due to a temperature change can be prevented. In particular, installation on a roof is being actively performed because more sunlight can be taken in.
Conventionally, when using as a roof, the process procedure of mounting a frame on a solar cell, installing a gantry on the roof, and then installing a solar cell on it, was used. The obtained solar cell module can be directly installed as a roof material by bending a reinforcing material. As a result, the cost of raw materials can be significantly reduced and the number of work steps can be significantly reduced, so that an inexpensive solar cell module can be provided. In addition, a very lightweight solar cell can be provided because no frame or mount is required. That is, the solar cell can be treated as a metal roof that has recently attracted attention because of its excellent workability, light weight, and excellent earthquake resistance.

[0005] In order to take out electrodes from these solar cell modules, it is common to provide an output terminal on the back side of the solar cell. This output terminal part is a part where electricity is taken out from the electrode of the photovoltaic element of the solar cell by a lead wire or cable inside, so it must have a structure that ensures insulation from the outside. Therefore, it is required to have a waterproof structure. Conventionally, as a method for maintaining the waterproofness, a method based on the structure of the terminal portion itself and a method based on an internal filler are generally used. Taking a completely waterproof structure only by the structure of the terminal portion requires a very complicated structure, which increases the cost. Therefore, an internal filler is often used in combination. For example, JP-A-09-055528 discloses that a terminal box is bonded with an adhesive and a filler is injected into the terminal box.

[0006] In addition, recently, since the design of a metal roof is emphasized, various processes such as a corrugated shape, a tile shape, and a bending process are performed.

[0007]

[Problems to be solved by the invention]
The following problems occur when the output terminal unit is mounted on the roof-integrated solar cell module that has been subjected to various processes such as a tile process and a bending process. As described above, the electrode extraction portion of the photovoltaic element injects a filler into the output terminal portion to have a waterproof structure. When injecting a filler into the output terminal portion attached to the back side of the flat solar cell module, the filler is injected and cured with the light-receiving surface facing downward. However, the back side of a solar cell module that has been subjected to various processing like recent times is not always a flat state,
There are various places to attach the output terminal section. That is,
Since the output terminal portions are not always provided on the same plane, the terminal portions may be mounted on different planes. In this case, if the attached output terminal has an inclination, or if the two output terminals have different inclinations, when the filler is injected, it may overflow from the output terminal before curing and may evenly inject. However, there is a problem that the waterproof property cannot be sufficiently maintained. Further, it is difficult to attach the output terminal portion to such a place because the shape of the bonding surface is various.

[0008] On the other hand, there are some problems when installing such a roof material-integrated solar cell module.

Conventionally, a roofing material is constructed from a eaves side to a ridge side by using a hanging member or the like on a roof board. However, in the case of a solar cell module, since the output terminal portion is provided on the back surface side, this portion collides with a field board and cannot be constructed. Therefore, a spacer member is newly formed so that the ground plate and the output terminal portion do not come into contact with each other.

[0010] For example, in Japanese Patent Application Laid-Open No. 08-186280, a solar cell module is installed on a gantry, thereby serving as a spacer between an output terminal section and a ground plane. Japanese Patent Application Laid-Open No. 05-018051 discloses that a power generation tile is provided with positive and negative connection terminals, and wiring terminals are also provided on a roof base. Also in this case, the solar cell module is installed on a pier having wiring terminals as a roof base. The use of the spacer member in this way not only increases the cost as a material cost, but also increases the number of construction steps and lowers the work efficiency.

In connecting a large number of solar cell modules, adjacent solar cell modules are connected to each other by a cable extending in a lateral direction. However, according to this method, after connecting the cable, the solar cell module must be constructed, so that the roof construction work and the electrical connection operation have to be performed simultaneously. For this reason, there is a problem that workability is deteriorated and wiring mistakes are liable to occur because a roof contractor needs to perform electric wiring.

The present invention has been made to solve the above problems, and
It aims to: Improve the workability of attaching the output terminal and injecting the filler into the output terminal, and have a structure that can maintain sufficient waterproofness. The output terminal shall not be in contact with the ground board even if no spacer member is provided during roof construction. Prevent cable wiring mistakes during roof construction.

[0013]

Means for Solving the Problems As a result of intensive research and development to solve the above problems, the present inventor finds that the following method is the best. The photovoltaic element is resin-encapsulated on the reinforcing member, and has a plurality of output terminals not arranged on the same plane on the non-light-receiving surface side of the reinforcing member, and the output terminals are provided at the same inclination. The solar cell module is characterized in that

(Operation) The solar cell module based on the above-described configuration includes the following aspects and has remarkable effects.

Since the output terminals are provided with the same inclination, (1) the filler can be prevented from protruding outside from the output terminals. That is, even if the output terminals are not arranged on the same plane, the same inclination is given to the solar cell module by making the same inclination, and it is easy to maintain the angle parallel to the floor, Even when the agent is injected, it can be injected efficiently without protruding outside. (2) A solar cell module having excellent insulation properties. That is, since the curing can be performed while the flatness of the filler surface is secured, sufficient waterproofness can be maintained.

By injecting a filler into the output terminal, (3) a simple output terminal can be provided with a sufficient waterproof structure. That is, it is not necessary to provide a waterproof structure only with the output terminal portion, so that the cost for the terminal portion can be reduced.

When the filler is one of a silicone resin and an epoxy resin, (4) an output terminal portion having excellent electric insulation can be obtained. That is, by using a resin having excellent electrical insulation as the filler, the electrical insulation of the output terminal portion can be ensured.

Since the reinforcing member has a concave portion in at least a part thereof and the output terminal portion is provided in the concave portion, (5) the output terminal portion comes into contact with the base plate without using a spacer member. Nothing. That is, by providing the concave portion on the back surface side and providing the output terminal portion in the concave portion, the output terminal portion does not contact the ground plate.

Since the output terminal portion is located in the concave portion of the reinforcing member and in the flat portion, (6) since the attaching surface is a flat portion, the output terminal portion can be easily attached.

Since at least one of the output terminal portions is a positive electrode output portion and one of the output terminal portions is a negative electrode output portion, (7) electricity can be easily extracted from the photovoltaic element.

By protruding the cable with connector from the output terminal portion, (8) connection between adjacent solar cell modules is facilitated. That is, the electrical connection of the solar cell module can be made without complicated electrical work because the connectors may be connected to each other.

Since the solar cell module is a roof material-integrated solar cell module, (9) a building material is not required as compared with a roof-mounted type, so that a low-cost and lightweight solar cell module can be obtained. (10) Since the solar cell module is installed on the roof where sunlight is most easily collected, power can be efficiently generated.

By mounting the output terminal portion so that the cable with connector faces the ridge side of the roof material-integrated solar cell module, (11) the cable can be connected after the roof is constructed. Roof construction and electrical connection can be separated. (12) Since wiring can be performed without complicating electric wiring, wiring mistakes can be prevented.

By providing a transparent resin film layer on the outermost surface on the light receiving surface side of the solar cell module, (13) a lightweight solar cell module is obtained. In particular, when a roof material-integrated solar cell module is used, a roof having excellent earthquake resistance can be obtained.

The photovoltaic element is a thin-film semiconductor formed on a flexible substrate. (14) Since both the substrate and the semiconductor layer have flexibility,
Since the solar cell module can be processed regardless of the presence or absence of the photovoltaic element, solar cell modules of various designs can be obtained.

Since the thin film semiconductor layer is an amorphous silicon semiconductor layer, (15) a solar cell module which is inexpensive, lightweight, and excellent in workability can be obtained.

[0027]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows (a) a plan view on the light-receiving surface side, (b) a cross-sectional view, (C) a plan view on the non-light-receiving surface side, and (d) an enlarged cross-sectional view of the solar cell module of the present invention. Show. FIG. 1 is only an example of the present invention, and the present invention is not limited thereto.

In FIG. 1, 101 is a photovoltaic element, 1
02 is a fibrous inorganic compound, 103 is a transparent organic polymer compound, 104 is a transparent resin film located on the outermost surface, 1
05 is a backside filler, 106 is a backside insulating film, 107
Indicates a reinforcing plate. The sunlight enters from the outermost film 104 and reaches the photovoltaic element 101, and the generated electromotive force is transmitted from the output terminal section 108 to the cable with connector 109.
Is taken out to the outside.

(Output terminal portion 108) This portion is a portion for taking out the terminal from the photovoltaic element to the outside, and protects the cable line taken out from the lead wiring member of the photovoltaic element from mechanical external force, and at the same time protects the water It must serve to protect the joint between the cable line and the photovoltaic element from foreign substances such as dust. For this reason, it is desirable to provide a terminal box or the like that covers the connection portion. When used in combination with a filler, it is only necessary to provide an enclosure so that the filler to be injected does not flow outside and can be cured on the connection portion.

A plurality of output terminals are provided for a plus output and a minus output, and the present invention is characterized in that the plurality of output terminals are provided at the same inclination.

The material used for the terminal box is required to be excellent in heat resistance, water resistance, electrical insulation and aging. Preferably, a material having good adhesiveness to the filler is used. Considering such elements, plastic is preferable as the terminal member, and flame-retardant plastics and ceramics are preferable from the viewpoint of flame retardancy.

For example, for example, polycarbonate, polyamide, polyacetal, modified PPO, polyester, polyarylate, unsaturated polyester, phenol resin,
Engineering plastics, such as epoxy resins, which have excellent strength, impact resistance, heat resistance, hardness, and aging resistance. Further, thermoplastic resins such as ABS resin, PP, and PVC can also be used.

(Filler and adhesive for output terminal portion) As the material, epoxy resin adhesive, silicone potting agent, silicone adhesive sealant, etc. having good electric insulation are preferable, and flexibility is taken into consideration. Then, a silicone resin is preferable. Further, when used as an adhesive for bonding the terminal box, those having a short curing time in consideration of workability, and those having a viscosity of 300 poise or more are preferable because the viscosity is too low to flow out of the terminal box. .
Further, as the filler, those having a viscosity of 1000 poise or less, which does not have too high a viscosity and which can reach the details of the electrode take-out portion, are preferable. When a silicone liquid type RTV rubber is used, the curing method is preferably a deacetone type or a dealcohol type in order not to erode the electrodes.

In the case of using a material capable of sufficiently securing the insulating property and the waterproof property of the electrode part, the structure of the output take-out part may be a structure using only the filler and not using the terminal box. As an example of this case, use a mold that can be removed after curing until the filler is cured, place the mold on the terminal, inject the filler into the mold, and remove the cured mold. Use it in such a way as to remove it. According to this method, a terminal box is not required, so that a low-cost solar cell module can be obtained.

(Manufacturing Process of Flat Panel Solar Cell Module) A method for producing a module with a flat panel solar cell of 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 303 and heat-press it on the front and back of the element. The lamination structure at the time of producing the solar cell module is such that the photovoltaic element 30
1, fibrous inorganic compound 302, transparent organic polymer resin 30
3. The front surface resin film 304, the back surface filler 305, the insulating film 306, and the reinforcing plate 307 are laminated in the order shown in the drawing or in the reverse order, and are heat-pressed to obtain the solar cell module 308. In addition, the heating temperature and heating time at the time of press bonding are determined by the temperature and time at which the crosslinking reaction sufficiently proceeds.

(Bending process of flat-plate solar cell module) In order to provide the flat-panel solar cell module with a function as a roof material, a process of adding a design property as an engaging portion or a roof is performed. For example, processing of tile type, corrugated type, etc.,
The entire or a part of the solar cell module is bent. For example, in FIG. 1, an engaging portion for engaging an adjacent module is formed on the long side of the solar cell module by folding a reinforcing plate. Further, the whole is shaped into a waveform. The method of processing these is not particularly limited. This is performed using a conventional machine for processing roof materials such as a roller former machine, a bender machine, and a press machine. In particular, it is preferable to use a roller former machine, a press machine, or the like because mass productivity is excellent.

(Attachment of Output Terminal) An output terminal is provided on the processed solar cell module. As mentioned above,
As a typical structure of the output terminal portion, a terminal box and a filler are used in combination, and electricity is extracted from the terminal box to the outside by a cable. The mounting in this case will be described in detail.

The terminal box is mounted at a position where the inclination of the terminal box is the same if the positive and negative terminals are not provided on the same plane due to various processes performed on the solar cell module. It is desirable. In this way, when the filler is injected into the terminal box, it is easy to cure the solar cell module while inclining the solar cell module and keeping the filler surface of the terminal portion parallel to the floor. That is, the workability is good, and the electrical insulation as a product is also excellent. Furthermore, when the concave portion is provided when viewed from the back surface side of the solar cell module, it is desirable to adopt a structure in which the output terminal box is installed inside the concave portion. If the terminal box is provided in the concave part when viewed from the back side and the terminal box does not protrude from the convex part, the terminal box does not contact the ground plate during construction, so external mechanical force is applied A highly reliable output terminal can be obtained without any problem.

The solar cell module of the present invention can be used together with a power converter to constitute a solar power generator.

The other constituent materials and manufacturing steps will be described below.

(Fibrous Inorganic Compound 102) The fibrous inorganic compound 102 impregnated in the surface filler will be described below. First, the surface of a solar cell using amorphous silicon is covered with a polymer resin film in order to make full use of its flexibility. However, in this case, the outermost surface is much more vulnerable to external flaws than when the outermost surface is covered with glass.

In addition, solar cell modules, particularly modules installed on roofs and walls of houses, are required to have flame retardancy. However, when the amount of the transparent organic polymer resin is large, the surface coating material becomes very flammable, and when the amount is small, the internal photovoltaic element cannot be protected from external impact. Therefore, in order to sufficiently protect the photovoltaic element from the external environment with a small amount of resin, a transparent polymer resin impregnated with a fibrous inorganic compound is used as a surface coating material.

Specific examples of the fibrous inorganic compound include glass fiber nonwoven fabric, glass fiber woven fabric, glass filler and the like. In particular, it is preferable to use a glass fiber nonwoven fabric. Glass fiber woven fabrics are expensive and are not easily impregnated. Since the use of a glass filler does not significantly improve the scratch resistance, it is difficult to cover the photovoltaic element with a smaller amount of the transparent organic polymer resin. For long-term use, it is desirable to treat the fibrous inorganic compound with a silane coupling agent or an organic titanate compound in the same manner as that used for the transparent organic polymer resin in order to ensure sufficient adhesion.

(Filler 103) The transparent organic polymer resin used as the surface filler 103 covers the unevenness of the photovoltaic element with the resin, and the element is exposed to a severe external environment such as temperature change, humidity and impact. It is necessary to protect the device from the surface film and to secure the adhesion between the surface film and the element. Therefore, weather resistance, adhesion, filling properties, heat resistance, cold resistance, and impact resistance are required. A resin satisfying these requirements is ethylene-
Examples include vinyl acetate copolymer (EVA), ethylene-methyl acrylate copolymer (EMA), ethylene-ethyl acrylate copolymer (EEA), polyolefin resins such as butyral resin, urethane resin, and silicone resin. . Among them, EVA has well-balanced physical properties for use in solar cells, and is preferably used.

Since EVA has a low thermal deformation temperature as it is, it easily undergoes deformation and creep under high-temperature use. Therefore, it is desirable to increase the heat resistance by crosslinking. E
In the case of VA, crosslinking is generally performed with an organic peroxide. Crosslinking with an organic peroxide is performed by free radicals generated from the organic peroxide extracting hydrogen and halogen atoms in the resin to form a CC bond. Thermal decomposition, redox decomposition and ionic decomposition are known as methods for activating organic peroxides. Generally, the thermal decomposition method is preferred. Specific examples of the chemical structure of the organic peroxide are roughly classified into hydroperoxide, dialkyl (allyl) peroxide, diacyl peroxide, peroxyketal, peroxyester, peroxycarbonate, and ketone peroxide. The amount of the organic peroxide is 0.5 to 5 parts by weight based on 100 parts by weight of the filler resin.

It is possible to carry out crosslinking and thermocompression bonding while heating under pressure while using the above organic peroxide as a filler. The heating temperature and time can be determined by the thermal decomposition temperature characteristics of each organic peroxide. In general, the heating and pressurizing is completed when the temperature and the time at which the thermal decomposition proceeds are more than 90%, preferably 95% or more. The gel fraction of the filler is preferably 80% or more. Here, the gel fraction is determined by the following equation.

Gel fraction = (weight of undissolved portion / original weight of sample) × 100 (%)

That is, when the transparent organic polymer resin is extracted with a solvent such as xylene, the crosslinked and gelled portion is not eluted but only the uncrosslinked sol portion is eluted. A gel fraction of 100% indicates that the crosslinking was completely completed. By evaporating the xylene from which the sample remaining after the extraction has been taken out, only the undissolved gel component can be obtained.

When the gel fraction is less than 80%, heat resistance and creep resistance are inferior, so that a problem occurs when used at high temperatures such as summer.

In order to carry out the above crosslinking reaction efficiently, it is desirable to use triallyl isocyanurate (TAIC), which is called a crosslinking assistant. Generally, the amount is 1 to 5 parts by weight based on 100 parts by weight of the filler resin.

Although the filler material used in the present invention is excellent in weather resistance, an ultraviolet absorber may be used in combination for further improving weather resistance or protecting the lower layer of the filler. . Known compounds are used as the ultraviolet absorber, but it is preferable to use a low-volatile ultraviolet absorber in consideration of the usage environment of the solar cell module. If a light stabilizer is added in addition to the ultraviolet absorber, the filler becomes more stable to light. Specific chemical structures are roughly classified into salicylic acid, benzophenone, benzotriazole, and cyanoacrylate.
It is preferable to add at least one of these ultraviolet absorbers.

It is known that a hindered amine light stabilizer can be used as a method for imparting weather resistance in addition to the above-mentioned ultraviolet absorber. A hindered amine-based light stabilizer does not absorb ultraviolet rays unlike an ultraviolet absorber, but exhibits a remarkable synergistic effect when used in combination with an ultraviolet absorber. The addition amount is 0.1 to 0.3 with respect to 100 parts by weight of the resin.
It is generally about parts by weight. Of course, some other than hindered amines function as light stabilizers, but are often colored, which is not desirable for the filler of the present invention.

Further, an antioxidant can be added to improve heat resistance and heat workability. Addition amount is resin 1
0.1 to 1 part by weight is appropriate for 00 parts by weight. The chemical structure of antioxidants is broadly classified into monophenol-based, bisphenol-based, polymer-type phenol-based, sulfur-based, and phosphoric-acid-based.

Further, when it is assumed that the solar cell module is used in a more severe environment, it is preferable to improve the adhesion between the filler and the photovoltaic element or surface film. The adhesion can be improved by adding a silane coupling agent or an organic titanate compound to the filler. The addition amount is based on 100 parts by weight of the filler resin.
0.1 to 3 parts by weight is preferable, and 0.25 to 1 part by weight is more preferable. Further, it is effective to add a silane coupling agent or an organic titanate compound to the transparent organic polymer in order to improve the adhesion between the impregnated fibrous inorganic compound and the transparent organic polymer compound.

On the other hand, in order to suppress the decrease in the amount of light reaching the photovoltaic element as much as possible, the surface filler must be transparent, and specifically, have a light transmittance of 400 nm or more and 800 n.
It is preferably at least 80%, more preferably at least 90%, in the visible light wavelength region of m or less. In addition, in order to facilitate the incidence of light from the atmosphere,
Preferably, the refractive index in degrees is from 1.1 to 2.0, more preferably from 1.1 to 1.6.

(Surface Resin Film 104) Since the surface resin film 104 used in the present invention is located on the outermost layer of the solar cell module, the surface resin film 104 has a long term in outdoor exposure of the solar cell module including weather resistance, stain resistance and mechanical strength. Performance to ensure reliability is required. Examples of the resin film used in the present invention include a fluorine resin and an acrylic resin. Among them, fluororesins are preferably used because of their excellent weather resistance and stain resistance. Specific examples include a polyvinylidene fluoride resin, a polyvinyl fluoride resin, and an ethylene-tetrafluoroethylene-ethylene copolymer. Polyvinylidene fluoride resin is excellent in terms of weather resistance,
Ethylene tetrafluoride-ethylene copolymer is excellent in compatibility between weather resistance and mechanical strength and transparency.

In order to improve the adhesiveness with the filler, it is desirable to perform a surface treatment such as a corona treatment, a plasma treatment, an ozone treatment, a UV irradiation, an electron beam irradiation and a flame treatment on the surface film. Specifically, it is preferable that the wetting index on the photovoltaic element side is 34 dyne to 45 dyne. If the wetting index is 34 dyne or less, the adhesive strength between the resin film and the filler is not sufficient, so that the filler and the resin film peel off. When using a resin film of ethylene tetrafluoride-ethylene copolymer resin,
It is difficult to make the wetting index more than 45dyne.

Further, the resin film which has been subjected to the stretching treatment has cracks. That is, when the end portion of the solar cell module is bent as in the present invention, the film is cut at the bent portion, so that peeling of the coating material and intrusion of moisture at the bent portion are promoted, and reliability is reduced. For this reason, a film that has not been stretched is more desirable. Specifically, in the ASTM D-882 test method, the tensile elongation at break was 200% in both the longitudinal and transverse directions.
It is preferably from about to 800%.

(Insulating film 106) Insulating film 10
6 is necessary for maintaining electrical insulation between the conductive metal substrate of the photovoltaic element 101 and the outside. As the material, a material that can secure sufficient electrical insulation with the conductive metal substrate, has excellent long-term durability, can withstand thermal expansion and thermal contraction, and has flexibility is preferable. Suitable films include nylon, polyethylene terephthalate, and polycarbonate.

(Back Filler 105) Back Filler 105
Is for bonding the photovoltaic element 101 to the insulating film 106 on the back surface. As the material, a material that can secure sufficient adhesion to the conductive substrate, has excellent long-term durability, can withstand thermal expansion and thermal contraction, and has flexibility is preferable. Preferred materials used are EVA,
Examples thereof include hot melt materials such as ethylene-methyl acrylate copolymer (EMA), ethylene-ethyl acrylate copolymer (EEA), polyethylene, and polyvinyl butyral, double-sided tape, and flexible epoxy adhesive. In addition, a tackifying resin may be applied to the surface of these adhesives in order to improve the adhesive strength with the reinforcing plate and the insulating film. These fillers are often the same material as the transparent polymer resin used as the filler 103 on the surface.
Furthermore, to simplify the process, on both sides of the insulating film,
A material in which the above-mentioned adhesive layer is integrally laminated in advance may be used.

(Reinforcing plate 107) On the outside of the covering film on the back surface, in order to increase the mechanical strength of the solar cell module, to prevent distortion and warping due to temperature change, and to provide a roof material integrated solar panel. A reinforcing plate 107 is attached to form a battery module. For example, weather-resistant, painted zinc steel sheet coated with organic polymer resin with excellent rust resistance,
A plastic plate, an FRP (glass fiber reinforced plastic) plate or the like is preferable.

(Cable line 109) The cable line is for taking out electricity from the photovoltaic element and connecting the solar cell modules to each other or to external wiring, and is soldered to a lead wiring member wired to the terminal position. It becomes. A cable and a connector are preferable because they can be easily connected. The cable is insulated from the core wire of soft copper or the like, and is further covered with a protective coating to protect it from the outside. As the insulating covering material, vinyl chloride, chloroprene, cross-linked polyethylene, natural rubber, ethylene propylene, silicone resin, fluororesin, inorganic insulating agent and the like are used. As the protective coating material, vinyl chloride, chloroprene, polyethylene, polyurethane, silicone resin, fluororesin, metal or the like is used. There are two types of connectors, a positive electrode and a negative electrode, which can be connected to each other. For this housing part, polyethylene, polycarbonate, polyethylene terephthalate, or the like is used.

It is desirable that the cable and the terminal box are attached so that the cable faces the ridge side. When constructing a roof, construction is generally performed from the eaves side to the ridge side. Therefore, when constructed, there is free space on the ridge side of the roofing material. If the cable is installed facing the ridge side and the cable is pulled out to the ridge side during construction, the connector can be connected after the roofing material has been constructed. As a result, it is possible to prevent mistakes in forgetting to wire, and furthermore, it is possible to divide the work between the roof construction company and the electric wiring company.

(Photovoltaic Element 101) As an example of the photovoltaic element in the present invention, a photovoltaic element having a structure in which a back reflection layer, a semiconductor active layer, a transparent conductive layer, and a collecting electrode are laminated on a substrate is used. Can be done. A schematic configuration diagram as an example is shown in FIG.
In this figure, 201 is a conductive substrate, 202
Is a back reflection layer, 203 is a semiconductor photoactive layer, 204 is a transparent conductive layer, 205 is a current collecting electrode, and 206 is an output terminal.

As the substrate, metal, resin, glass, ceramics, semiconductor bulk and the like are used. The surface may have fine irregularities. A structure in which light is incident from the substrate side using a transparent substrate may be employed.

However, in order to maximize the flexibility of amorphous silicon, it is desirable to use a flexible substrate. That is, it is desirable to use metal or resin. By forming the metal or resin into a long shape, it is possible to cope with continuous film formation. Examples of the material for the resin substrate include polyethylene terephthalate, polyethylene naphthalate, aromatic polyester, aromatic polyamide, polysulfonic acid, polyimide, polyarylate, and polyether ketone. Also, by making the substrate a conductive substrate, it becomes a substrate for the photovoltaic element,
This is more preferable because it can also serve as a lower electrode. As materials for the conductive substrate, silicon, tantalum,
Examples include molybdenum, tungsten, stainless steel, aluminum, copper, titanium, carbon sheets, lead-plated steel sheets, resin films and ceramics on which conductive layers are formed. On the conductive substrate 201, a metal layer, a metal oxide layer, or a metal layer and a metal oxide layer may be formed as the back reflection layer 202. These roles serve as a reflection layer that reflects light reaching the substrate and reuses the light in the semiconductor layer. Providing irregularities on these surfaces has the effect of extending the optical path length of the reflected light in the semiconductor layer and increasing the short-circuit current. For example, Ti, Cr, M
o, W, Al, Ag, Ni, Cu, Au and the like are used, and for the metal oxide layer, for example, ZnO, TiO ₂ , S
nO 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, a sputtering method, plating, and printing.

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.
InSe ₂ , CuInS ₂ , GaAs, CdS / Cu
₂ S, CdS / CdTe, CdS / InP, CdTe /
And a compound semiconductor such as Cu ₂ Te. As a method of forming the semiconductor photoactive layer, in the case of polycrystalline silicon, a sheet of molten silicon or heat treatment of amorphous silicon is used. In the case of amorphous silicon, a microwave plasma CVD method using silane gas as a raw material, a high frequency plasma CVD method In the case of a compound semiconductor, there are ion plating, ion beam deposition, vacuum evaporation, sputtering, and electrodeposition.

The transparent conductive layer 204 plays the role of the upper electrode of the solar cell. At the same time, diffuse reflection of incident light and reflected light is increased, and the optical path length in the semiconductor layer is extended. Further, it prevents the elements of the metal layer from diffusing or migrating into the semiconductor layer, thereby preventing the photovoltaic element from shunting. Further, by having an appropriate resistance, a short circuit due to a defect such as a pinhole in the semiconductor layer is prevented. It is desirable that the specific resistance is 10E-5 (Ωcm) or more and 10E-2 (Ωcm) or less. Further, it is preferable that the surface has irregularities as in the case of the metal layer. As a material to be used, for example, In ₂ O ₃ , SnO ₂ , In ₂ O ₃ —SnO ₂ (IT
O), ZnO, TiO ₂ , Cd ₂ SnO ₄ , and a crystalline semiconductor layer doped with a high concentration of impurities. As a forming method, resistance heating evaporation, sputtering, spraying, CVD,
There is an impurity diffusion method and the like.

A grid-like current collecting electrode 205 (grid) may be provided on the transparent conductive layer in order to efficiently collect current. As a specific material of the current collecting electrode 205, for example, Ti, Cr, Mo, W, Al, Ag, Ni, C
u, Sn, or a conductive paste such as a 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,
There are a method of directly forming a grid electrode pattern by photo CVD, a method of plating after forming a negative pattern mask of the grid electrode pattern, and a method of printing a conductive paste. As the conductive paste, one obtained by dispersing silver, gold, copper, nickel, carbon, or the like in fine powder form in a binder polymer is usually used. Examples of the binder polymer include resins such as polyester, epoxy, acrylic, alkyd, polyvinyl acetate, rubber, urethane, and phenol.

Finally, to extract the electromotive force, the plus side output terminal 206a and the minus side output terminal 206b are attached to the conductive substrate and the current collecting electrode. A method of joining a metal body such as a copper tab to the conductive substrate by spot welding or soldering is adopted,
A method of electrically connecting a metal body to the collecting electrode by a conductive paste 207 or solder is used. Current collecting electrode 205
It is preferable to provide an insulating film 208 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 the device is mounted on the semiconductor device.

[0071]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments.

(Example 1) A roofing-integrated solar cell module in which a horizontal roofing metal roof and an amorphous silicon solar cell module are integrated is formed into a corrugated shape.

[Photovoltaic Element] First, an amorphous silicon (a-Si) solar cell (photovoltaic element) is manufactured. The manufacturing procedure will be described with reference to FIG.

On a cleaned stainless steel substrate 201, an Al layer (film thickness: 5000) was formed as a back reflection layer 202 by sputtering.
Å) and a ZnO layer (thickness 5000 Å) are sequentially formed. Then, SiH ₄ , PH _3, and H ₂ were formed by plasma CVD.
An i-type a-Si layer from a mixed gas of SiH ₄ and H ₂ , a p-type microcrystalline μc-Si layer from a mixed gas of SiH ₄ , BF ₃ and H _2. Formed, and the thickness of the n-layer is 150Å / i-layer thickness of 4000Å / p-layer thickness of 100Å / n
Layer thickness 100 ° / i-layer thickness 800 ° / p-layer thickness 100 °
Tandem a-Si photoelectric conversion semiconductor layer 203 having a layer structure of
To form Next, as the transparent conductive layer 204, In ₂ O ₃
A thin film (thickness: 700 °) is formed by depositing In by a resistance heating method in an O ₂ atmosphere. Further, a grid electrode 205 for current collection is formed, and finally a copper tab is attached to the stainless steel substrate as a negative output terminal 206b by using solder, and a tin foil tape is attached to the current collection electrode 205 as the positive output terminal 206a. A photovoltaic element is obtained as an output terminal.

[Cell Block] A method of manufacturing a solar cell block by connecting the above-described elements in eight series will be described with reference to FIG.

After arranging the eight elements 401 in a horizontal line, of the adjacent elements, the plus side terminal 403a of one element and the minus side terminal 403b of the other element are connected using solder 404. At this time, the plus side terminal extending to the outside of the photovoltaic element substrate is extended and connected to the minus side terminal. Further, this serializes the eight elements to create a serialized cell block. Turn the copper tab connected to the output terminal of the element at the end to the back, attach a copper tab of an appropriate length, attach solder to the tip, and remove the electrode tab 40
5a (plus side) and 405b (minus side). At this time, a glass cloth tape is attached to the back surface of the copper tab for improving insulation. The positions of the electrode extraction portions 405a and 405b are as follows.
After completion of the solar cell module, it is provided so as to have a position having the same inclination.

[Modularization] A method for producing a solar cell module by covering the above elements will be described with reference to FIG.

The cell block 501 and the fibrous inorganic compound (4
0g / m ² ) 502, transparent organic polymer resin 503 on the light-receiving side, front surface resin film 504, back side integrated laminated film 505,
A reinforcing plate 506 is prepared, and these are laminated in the order shown in FIG.

This laminate is vacuum-heated using a single vacuum laminator to produce a flat solar cell module. The vacuum conditions at that time were as follows: evacuation speed: 76 Torr / sec., Degree of vacuum: 5 Torr, evacuation 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 transparent organic polymer resin (EVA) is 140
The environment is more than 15 minutes. Thereby, EVA was melted and crosslinked.

As shown in FIG. 5B, the reinforcing plate 50
6, a hole 507 (φ = 15 mm) for extracting a terminal is previously formed. Also, a hole of φ = 6 mm corresponding to the terminal extraction hole is previously formed in the back integrated film 505 to prevent the hole from being blocked by the melting of the organic polymer resin on the back surface during lamination. A stopper 508 made of silicone rubber is provided, and after the lamination, the stopper is removed.

<Fibrous Inorganic Compound 502> Fibrous inorganic compound (40 g / m ² ) Glass having a basis weight of 40 g / m ² , a thickness of 200 μm, containing 4.0% of a binder acrylic resin, a wire diameter of 10 μm, and a fiber length of 13 mm Prepare a non-woven cloth.

<Transparent Organic Polymer Resin 503 on the Light-Receiving Side> Ethylene-vinyl acetate copolymer (vinyl acetate 25% by weight) as a filler, a crosslinking agent, an ultraviolet absorber, an antioxidant,
460 μm EV formulated with light stabilizer
Prepare A sheet.

<Surface Resin Film 504> A non-stretched ethylene-tetrafluoroethylene film (ETFE) 50 μm is prepared as a surface resin film. Note that a surface in contact with the filler is subjected to plasma treatment in advance.

<Back integrated laminated film 505> A formulated ethylene-vinyl acetate copolymer (25% by weight of vinyl acetate, thickness of 225 μm) used as an integrated laminated film, as an adhesive layer, and as an organic polymer resin on the light-receiving side. And a biaxially stretched polyethylene terephthalate film (PET) (thickness: 100 μm) as an insulating film, and EVA / P
An integrally laminated film having a total thickness of 550 μm is prepared by integrally laminating in the order of ET / EVA.

<Reinforcing plate 506> As the reinforcing plate, a galvalume steel plate (aluminum / zinc alloy-plated steel plate in which aluminum 55%, zinc 43.4%, and silicon 1.6% are integrated)
First, a steel sheet coated with a polyester-based paint to which one is coated and a polyester-based paint to which glass fiber is added is prepared. The steel plate has a thickness of 400 μm.

[Roller Former Processing] Next, as shown in FIG. 6, the end of the solar cell module not including the photovoltaic element 601 is bent using a roller former forming machine. The ridge side is bent upward to the light receiving surface, and the eave side is bent downward to the light receiving surface. At this time, the photovoltaic element 60
One part is formed so that the roller does not hit it.

[Press Processing] Next, as shown in FIG. 7, the reinforcing plate is bent into a corrugated shape by a press molding machine regardless of the presence or absence of the photovoltaic element. Pressing is performed by sandwiching the solar cell module between a lower mold having a convex portion and an upper mold having a concave portion.

[Installation of Output Terminal] As shown in FIG.
A terminal box is attached to the back surface 801 of the solar cell module as an output terminal unit. The leading end of the cable with connector 803 is partially peeled from the terminal extracting hole 802 described above, and a conductor is drawn out and soldered. At this time, the cable with the connector is in a state of being inserted into a through hole provided on the side surface of the terminal box 805. Then, the double-sided tape is peeled off from the terminal box 805 made of polycarbonate to which the double-sided tape 804 has been pasted in advance, and the double-sided tape is adhered to a specified position on the back side reinforcing plate.
After that, fill the inside of the terminal box with silicon sealant 807 “SLISTAIC 739RTV” manufactured by Dow Corning Co., Ltd. until the electrodes are completely hidden. A terminal extraction part of the battery module is formed.

The above operation is performed by placing the solar cell module on the base 809 such that the terminals are all parallel to the floor.

The terminal box is attached in such a direction that the cable with connector faces the ridge side.

As in the present embodiment, even in the roof-integrated solar cell module processed into a corrugated shape, all the terminal boxes can be mounted simply by tilting the solar cell module according to the inclination by mounting the terminal boxes at the same inclination. Can be parallel to the floor. For this reason, the work of injecting the filler is also improved. By curing the filler as it is, there is no defect such that the surface of the filler is inclined and the electrode portion is exposed. That is, the solar cell module is improved in waterproofness of the terminal portion and excellent in insulation.

Further, by providing a terminal box in a concave portion from the back surface side (a convex portion from the light receiving surface side) by utilizing the corrugated shape, it is possible to prevent the terminal box from hitting the field plate even without a spacer. Because there is no spacer, roof construction is possible without using spacers. That is, both raw material costs and the number of construction steps can be reduced, resulting in significant cost reduction. Furthermore, since the cable with the connector is used, the electrical connection between the solar cells is not only easy, but also the electrical connection can be made after the roof construction by arranging the orientation toward the ridge side. As a result, a wiring error as in the related art is less likely to occur, and the work efficiency is improved because the roof construction worker and the electric wiring worker can be separated.

(Embodiment 2) This embodiment is also a roofing-integrated solar cell module in which a horizontal roof metal roof and an amorphous silicon solar cell module are integrated.

In the same manner as in Example 1, the process up to roller forming is performed.

Thereafter, a working as shown in FIG. 9A is performed by press working. The pressing method is the same as that of the first embodiment except that the shape of the press mold is changed. Thereafter, the method of forming the terminal portion is the same as that of the first embodiment. However, the installation place of the terminal box 902 is a concave portion on the reinforcing material, and FIG.
This is shown in (b).

In this embodiment, the same effects as those of the first embodiment can be obtained. In the solar cell module according to the present embodiment, the terminal box is stuck at a flat position, so that the terminal box can be easily bonded. In addition, even when the filler is injected or cured, sufficient parallelism between the terminal box and the floor can be maintained even without a stand, so that waterproofness can be easily ensured.

Example 3 This is a roof material integrated solar cell module in which a roof tile-type metal roof and an amorphous silicon solar cell module are integrated.

As the photovoltaic element, one having output terminals for current collection attached to both sides is used. Using the photovoltaic element, the following cell block is created.

[Cell Block] A method of manufacturing a solar cell block by connecting the above-described elements in 10 series will be described with reference to FIG.

After arranging the ten elements 1001 in a horizontal line, the plus side terminal 1003a of one of the adjacent elements is connected to the minus side terminal 1003b of the other element using solder 1004. At this time, the plus side terminal extending to the outside of the photovoltaic element substrate is extended and connected to the minus side terminal. As a result, the ten elements are serialized to create a serialized cell block. The copper tab connected to the output terminal of the element at the extreme end is turned to the rear surface, a copper tab of an appropriate length is attached, and solder is attached to the tip to make an electrode extraction portion (positive side) 1005a. The output terminal (minus side) 1005b of the element on the opposite side is extended to the plus side electrode lead-out part by the copper tab 1006, and the electrode lead-out part is provided at a position as shown in FIG. At this time, a glass cloth tape is attached to the back surface of the copper tab for improving insulation. The positions of the electrode take-out portions are provided so as to have the same inclination after completion of the solar cell module.

[Modularization] A flat panel solar cell module is manufactured in the same manner as in Example 1.

[Bender bending] Next, as shown in FIG.
The end of the long side of the solar cell module that does not include the photovoltaic element 1101 is placed on the light receiving surface side by a bender bending machine.
° Bend.

[Press Processing] Next, as shown in FIG. 12, a reinforcing plate is processed by a press molding machine regardless of the presence or absence of a photovoltaic element. The working method is the same as that of the first embodiment, except that the shape of the mold used for the press is changed.

[Installation of Output Terminal] As shown in FIG.
Electric wires for extracting power on the back side of the solar cell module 1301
Attach 1303 and terminal part 1302. The mounting method is the same as in the first embodiment. FIG. 13 shows specific mounting positions and mounting directions.

The same effect as in Example 1 was obtained in the solar cell module with a roofing material integrated with tiled roof as in this example.

(Embodiment 4) A solar cell module in which a terminal portion is formed without using a terminal box.

In the same manner as in Example 1, up to corrugation forming by press working is performed.

[Installation of Output Terminal] As shown in FIG.
Wires 14 for taking out electrodes on the back of solar cell module 1401
Attach 03 and terminals.

A part of the tip of the cable with connector 1403 is partly removed from the terminal extracting hole 1402, and a conductor is drawn out and soldered. As an output terminal member, an inner diameter 20 mm made of urethane rubber to which double-sided tape 1404 has been pasted in advance,
A circular member 1405 having an outer diameter of 30 mm and a height of 10 mm is attached by passing a cable through the circle. Then, the silicone sealant 1406 is placed so that the electrode portion is completely hidden inside the circle of the member 1405.
Fill. This state is left for 24 hours to form a terminal extraction portion of the solar cell module.

In the case of the solar cell module of this embodiment, the same effects as those of the first embodiment can be obtained,
Raw material costs can be significantly reduced because no terminal box is used. However, compared to the case where a terminal box is used, the electrode extraction part of the cable (the part soldered to the output terminal)
In addition, it is necessary to pay attention to this point because external force is easily transmitted. That is, it is better to refrain from using when such a force may be applied after installation.

[0111]

According to the present invention, the workability of attaching the output terminal portion and injecting the filler into the output terminal portion can be improved, and the parallelism of the filler surface can be ensured, so that the electrode portion can be formed. Since the waterproof and insulating properties can be sufficiently ensured without exposing the filler from the filler, the solar cell module has excellent safety. In addition, by providing the terminal portion in the concave portion on the back surface, it is possible to provide a structure in which the output terminal portion does not come into contact with the field board even when the spacer member is not provided at the time of roof construction. This can reduce raw material costs,
Further, the manufacturing cost can be reduced from the viewpoint of reducing the number of steps. In addition, by providing terminals and cables toward the ridge side, cable wiring can be routed to the ridge side and cables can be wired after roof construction, so it is possible to prevent cable wiring mistakes, and And the work of the electric wiring company can be separated, so that the workability is also improved.

[Brief description of the drawings]

FIG. 1 is a plan view (a) of a photoreceptor side of a solar cell module of the present invention (b) a cross-sectional view (c) a plan view of a back side (d).

FIG. 2 is a schematic diagram showing a basic configuration of a photovoltaic element that can be used in the solar cell module of the present invention.

FIG. 3 is a diagram showing a stacked configuration of a solar cell module of the present invention.

FIG. 4 is a plan view and a cross-sectional view of a cell block according to the first embodiment.

FIG. 5A is a cross-sectional view of a stack when a solar cell module according to Example 1 is created, and FIG.

FIG. 6 is a schematic diagram of a solar cell module after the fall former of Example 1 is molded.

FIG. 7 is a schematic diagram of a solar cell module after press molding in Example 1.

FIG. 8A is a plan view of the back surface side in the method of installing the terminal portion according to the first embodiment, and FIG.

9A is a schematic plan view of a solar cell module according to a second embodiment, and FIG.

FIG. 10 is a plan view and a cross-sectional view of a cell block according to a fourth embodiment.

FIG. 11 is a schematic diagram of a solar cell module after bender bending of Example 4.

FIG. 12 is a schematic diagram of a solar cell module after press molding in Example 4.

FIG. 13 is a schematic diagram of the back surface side of the solar cell module of Example 4.

FIG. 14 is a schematic rear side view of the solar cell module according to the fifth embodiment.

[Explanation of symbols]

101,301,401,501,601,701,1
001, 1101 Photovoltaic element 102, 302, 502 Fibrous inorganic compound 103, 303, 503 Transparent organic polymer resin 104, 304, 504 Front resin film 105, 305 Back filler 106, 306 Back insulating film 107 307, 506 Reinforcement plate 108, 902, 1302 Terminal box 109, 803, 903, 1303, 1403 Cable with connector 201 Conductive substrate 202 Back reflection layer 203 Semiconductor photoactive layer 204 Transparent conductive layer 205 Current collecting electrode 206a, 403a, 1003a Positive output Terminals 206b, 403b, 1003b Negative side output terminal 207 Conductive paste 208, 402, 1002 Insulating film 308, 602, 702, 1102, 1201 Solar cell module 404, 806, 1004.14 7 Solder 405a, 1005a Positive-side electrode removing part 405b, 1005b Minus-side electrode removing part 505 Backside integrated film 507, 8021402 Terminal removing hole 508 Silicon rubber plug 801,901,1301,1401 Back side of solar cell module 804, 1404 Double-sided tape 805 Terminal box main body 807, 1406 Silicon sealant 808 Terminal box lid 809 Mount 1405 Output terminal member

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Masaaki Matsushita 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Meiji Takabayashi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inside the corporation

Claims (30)

[Claims] 1. A photovoltaic element is resin-sealed on a reinforcing material, and has a plurality of output terminals not arranged on the same plane on a non-light receiving surface side of the reinforcing material, wherein the output terminal is Solar cell modules characterized by being provided with the same inclination. 2. The solar cell according to claim 1, wherein the output terminal portion has a box-shaped or frame-shaped member, and the box-shaped or frame-shaped member is filled with a filler. module. 3. The solar cell module according to claim 1, wherein said output terminal portion is formed only of a filler. 4. The solar cell module according to claim 2, wherein the filler is one of a silicone resin and an epoxy resin. 5. The solar cell module according to claim 1, wherein at least a part of the reinforcing member has a concave portion, and the output terminal portion is provided in the concave portion. 6. The solar cell module according to claim 1, wherein the output terminal portion is located in a concave portion of the reinforcing member and in a flat portion. 7. The output terminal section is a positive electrode output section,
The solar cell module according to claim 1, further comprising a negative electrode output unit. 8. The solar cell module according to claim 1, wherein a cable with a connector protrudes from said output terminal portion. 9. The solar cell module according to claim 1, wherein the solar cell module is a roof material-integrated solar cell module. 10. The solar cell module according to claim 9, wherein the output terminal portion is attached so that the cable with the connector faces the ridge side of the roofing-integrated solar cell module. 11. The solar cell module according to claim 1, further comprising a transparent resin film layer on the outermost surface on the light-receiving surface side of the solar cell module. 12. The photovoltaic element comprises a thin film semiconductor formed on a flexible substrate.
The solar cell module as described. 13. The solar cell module according to claim 11, wherein said thin film semiconductor layer is an amorphous silicon semiconductor layer. 14. A method for manufacturing a solar cell module in which a photovoltaic element is resin-sealed on a reinforcing member, wherein the reinforcing member is bent at a portion where the photovoltaic element is present, and the reinforcing member is provided. Providing a plurality of output terminals not arranged on the same plane at the same inclination on the non-light-receiving side of the solar cell module. 15. The solar cell according to claim 14, wherein the output terminal portion has a box-shaped or frame-shaped member, and further includes a step of filling a filler into the box-shaped or frame-shaped member. Manufacturing method of battery module. 16. The method according to claim 14, wherein the box-shaped or frame-shaped member is removed after the step of filling the filler. 17. The method according to claim 15, wherein the filler is one of a silicone resin and an epoxy resin.
Or a method for manufacturing a solar cell module according to item 16. 18. The method for manufacturing a solar cell module according to claim 14, wherein a concave portion is provided in at least a part of the reinforcing member, and the output terminal portion is provided in the concave portion. 19. The method for manufacturing a solar cell module according to claim 14, wherein said output terminal portion is located in a concave portion of said reinforcing member and in a flat portion. 20. The method for manufacturing a solar cell module according to claim 14, wherein said output terminal section has a positive electrode output section and a negative electrode output section. 21. The solar cell module according to claim 14, wherein the solar cell module is a roof material-integrated solar cell module.
A method for manufacturing the solar cell module according to the above. 22. The solar cell module according to claim 14, wherein the solar cell module is a roof material-integrated solar cell module.
A method for manufacturing the solar cell module according to the above. 23. The method for manufacturing a solar cell module according to claim 22, wherein the output terminal portion is attached so that the cable with a connector faces the ridge side of the roof material-integrated solar cell module. 24. The method for manufacturing a solar cell module according to claim 14, wherein a transparent resin film layer is provided on the outermost surface on the light receiving surface side of the solar cell module. 25. The method according to claim 14, wherein the photovoltaic element is a thin film semiconductor formed on a flexible substrate. 26. The method according to claim 24, wherein the thin film semiconductor layer is an amorphous silicon semiconductor layer. 27. A solar cell, wherein the roof material-integrated solar cell module according to claim 9 is fixed on a field board with a fixing member, and adjacent roof material-integrated solar cell modules are fixed to each other. Module installation method. 28. The method according to claim 27, wherein the output terminal portion does not contact a ground plate. 29. The method for constructing a solar cell module according to claim 27, wherein the cable with the connector is taken out to the ridge side and the connector is connected after the solar cell module is installed. 30. A solar cell power generator, comprising: the solar cell module according to claim 1; and a power converter connected to the solar cell module.